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177 results on '"Poznan University of Technology (PUT)"'

1. MultiZenoTravel: a Tunable Benchmark for Multi-Objective Planning with Known Pareto Front

Author: Quemy, Alexandre, Schoenauer, Marc, Dreo, Johann, YData Lab [Seattle, USA], Poznan University of Technology (PUT), Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria), Université Paris-Saclay, Biomédecine computationelle des systèmes / Computational systems biomedicine, Institut Pasteur [Paris] (IP)-Université Paris Cité (UPCité), and Hub Bioinformatique et Biostatistique - Bioinformatics and Biostatistics HUB
Subjects: FOS: Computer and information sciences, Artificial Intelligence (cs.AI), Computer Science - Artificial Intelligence, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI]
Abstract: Multi-objective AI planning suffers from a lack of benchmarks exhibiting known Pareto Fronts. In this work, we propose a tunable benchmark generator, together with a dedicated solver that provably computes the true Pareto front of the resulting instances. First, we prove a proposition allowing us to characterize the optimal plans for a constrained version of the problem, and then show how to reduce the general problem to the constrained one. Second, we provide a constructive way to find all the Pareto-optimal plans and discuss the complexity of the algorithm. We provide an implementation that allows the solver to handle realistic instances in a reasonable time. Finally, as a practical demonstration, we used this solver to find all Pareto-optimal plans between the two largest airports in the world, considering the routes between the 50 largest airports, spherical distances between airports and a made-up risk.
Published: 2023

2. Minimization of Costs and Energy Consumption in a Data Center by a Workload-Based Capacity Management

Author: Laura Sisó, Georges Da Costa, Ariel Oleksiak, Wojciech Piatek, Jaume Salom, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Universitat de Barcelona - UB (SPAIN), Poznan Supercomputing and Networking Center - PSNC (POLAND), Poznan University of Technology - PUT (POLAND), Catalonia Institute for Energy Research - IREC (Barcelone, Espagne), Système d’exploitation, systèmes répartis, de l’intergiciel à l’architecture (IRIT-SEPIA), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Université Toulouse III - Paul Sabatier (UT3), Poznan University of Technology (PUT), Poznan Supercomputing and Networking Center (PSNC), Catalonia Institute for Energy Research (IREC), and Institut National Polytechnique de Toulouse - INPT (FRANCE)
Subjects: [INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR], Simulations, Engineering, CAPEX, Real-time computing, Système d'exploitation, Réseaux et télécommunications, 02 engineering and technology, Heat-aware, Cooling capacity, 7. Clean energy, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], Architectures Matérielles, 020204 information systems, Range (aeronautics), 0202 electrical engineering, electronic engineering, information engineering, Data centers, Operating expense, business.industry, Workload, Energy consumption, OPEX, Capacity management, Systèmes embarqués, Reliability engineering, Energy efficiency, 020201 artificial intelligence & image processing, Data center, [INFO.INFO-ES]Computer Science [cs]/Embedded Systems, Metrics, [INFO.INFO-OS]Computer Science [cs]/Operating Systems [cs.OS], business, Efficient energy use
Abstract: International audience; In this paper we present an approach to improve power and cooling capacity management in a data center by taking into account knowledge about applications and workloads. We apply power capping techniques and proper cooling infrastructure configuration to achieve savings in energy and costs. To estimate values of a total energy consumption and costs we simulate both IT software/hardware and cooling infrastructure at once using the CoolEmAll SVD Toolkit. We also investigated the use of power capping to adjust data center operation to variable power supply and pricing. By better adjusting cooling infrastructure to specific types of workloads, we were able to find a configuration which resulted in energy, OPEX and CAPEX savings in the range of 4–25 %.
Published: 2014

3. Gradient-based machine learning control for the stabilization of the fluidic pinball and the open cavity experiment

Author: Maceda, Guy Y. Cornejo, Li, Yiqing, Lusseyran, François, Morzyński, Marek, Noack, Bernd R., Harbin Institute of Technology (HIT), DAtascience, trAnsition, Fluid instability, contrOl, Turbulence (DATAFLOT), Laboratoire Interdisciplinaire des Sciences du Numérique (LISN), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Mécanique-Energétique (M.-E.), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Poznan University of Technology (PUT)
Subjects: gradient, Flow control, [SPI]Engineering Sciences [physics], machine learning control, Flow control wake stabilization fluidic pinball machine learning control, wake stabilization, cavity flow, fluidic pinball
Abstract: International audience; We optimized control laws for stabilization of two shear flows: a DNS of a flow past a cluster of three rotating cylinders-the fluidic pinball-and the cavity flow experiment. The fluidic pinball is stabilized in increasingly reacher control law spaces employing 9 sensors downstream and 3 actuators (the cylinders). As for the cavity, two regimes are controlled in single-input single-output manner: a single-mode driven regime and a mode-switching regime. Key enablers are automated machine learning algorithms augmented with gradient search: explorative gradient method for the open-loop parameter optimization and a gradientenriched machine learning control (gMLC, [1]) for the feedback optimization. For both plants, the need of feedback for control is demonstrated. gMLC learns the control law significantly faster than previously employed genetic programming control both in DNS and experiment.
Published: 2022

4. Scheduling High Multiplicity Coupled Tasks

Author: Michaël Gabay, Wojciech Wojciechowicz, Institute of Computing Science [Poznan], Poznan University of Technology (PUT), Recherche Opérationnelle pour les Systèmes de Production (G-SCOP_ROSP), Laboratoire des sciences pour la conception, l'optimisation et la production (G-SCOP), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0209 industrial biotechnology, 021103 operations research, Job shop scheduling, Computer science, 0211 other engineering and technologies, complexity theory, QA75.5-76.95, [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO], 02 engineering and technology, High multiplicity, Upper and lower bounds, Coupled tasks, Scheduling (computing), high multiplicity, 020901 industrial engineering & automation, Asymptotically optimal algorithm, asymptotically optimal algorithms, Electronic computers. Computer science, scheduling, Algorithm
Abstract: The coupled tasks scheduling problem is class of scheduling problems, where each task consists of two operations and a separation gap between them. The high-multiplicity is a compact encoding, where identical tasks are grouped together, and the group is specified instead of each individual task. Consequently the encoding of a problem instance is decreased significantly. In this article we derive a lower bound for the problem variant as well as propose an asymptotically optimal algorithm. The theoretical results are complemented with computational experiment, where a new algorithm is compared with three other algorithms implemented.
Published: 2020
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5. Semantic concept schema of the linear mixed model of experimental observations

Author: Paweł Krajewski, Augustyn Markiewicz, Emilie J. Millet, Susanna-Assunta Sansone, Agnieszka Ławrynowicz, Fred A. van Eeuwijk, Alejandra Gonzalez-Beltran, Hanna Ćwiek-Kupczyńska, Philippe Rocca-Serra, Katarzyna Filipiak, Institute of Plant Genetics (IPG), Polish Academy of Sciences (PAN), Poznan University of Technology (PUT), Department of Mathematical and Statistical Methods, Poznan University of Life Sciences, Oxford e-Research Center, University of Oxford, Génétique et Amélioration des Fruits et Légumes (GAFL), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Biometris, Wageningen University and Research [Wageningen] (WUR), Narodowe Centrum Nauki (National Science Centre) 2016/21/N/ST6/02358UK Research & Innovation (UKRI) Biotechnology and Biological Sciences Research Council (BBSRC)BB/L024101/1BB/L005069/1United States Department of Health & Human Services National Institutes of Health (NIH) - USAU54 AI1179251U24AI117966-011OT3OD025459-01 1OT3OD025467-011OT3OD025462-01IMI116060UK Research & Innovation (UKRI) Biotechnology and Biological Sciences Research Council (BBSRC)BB/I000771/1BB/L005069/1BB/E025080/1BB/L024101/1BB/H024921/1, European Project: 634107,H2020,H2020-PHC-2014-two-stage,MULTIMOT(2015), European Project: 654241,H2020,H2020-EINFRA-2014-2,PhenoMeNal(2015), and European Project: 676559,H2020,H2020-INFRADEV-1-2015-1,ELIXIR-EXCELERATE(2015)
Subjects: Mixed model, Statistics and Probability, Statistical methods, Classification and taxonomy, Computer science, Data management, 0206 medical engineering, 02 engineering and technology, Ontology (information science), Library and Information Sciences, Semantic data model, Wiskundige en Statistische Methoden - Biometris, Article, Generalized linear mixed model, Education, 03 medical and health sciences, Schema (psychology), Life Science, Computational models, lcsh:Science, Mathematical and Statistical Methods - Biometris, 030304 developmental biology, 0303 health sciences, Information Age, Information retrieval, business.industry, Statistical model, PE&RC, Computer Science Applications, Data processing, [STAT]Statistics [stat], Data integration, lcsh:Q, Statistics, Probability and Uncertainty, business, 020602 bioinformatics, Information Systems
Abstract: In the information age, smart data modelling and data management can be carried out to address the wealth of data produced in scientific experiments. In this paper, we propose a semantic model for the statistical analysis of datasets by linear mixed models. We tie together disparate statistical concepts in an interdisciplinary context through the application of ontologies, in particular the Statistics Ontology (STATO), to produce FAIR data summaries. We hope to improve the general understanding of statistical modelling and thus contribute to a better description of the statistical conclusions from data analysis, allowing their efficient exploration and automated processing.
Published: 2020
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6. Performance evaluation of electrochemical capacitors with activated carbon spheres as electrode material and aqueous electrolyte

Author: Anetta Platek-Mielczarek, Joanna Conder, Krzysztof Fic, Camelia Matei Ghimbeu, Poznan University of Technology (PUT), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Réseau sur le stockage électrochimique de l'énergie (RS2E), Aix Marseille Université (AMU)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Nantes Université (Nantes Univ)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Université de Montpellier (UM), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Fédérale Toulouse Midi-Pyrénées-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Ghimbeu, Camelia
Subjects: [CHIM.MATE] Chemical Sciences/Material chemistry, Renewable Energy, Sustainability and the Environment, [CHIM.OTHE] Chemical Sciences/Other, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Energy Engineering and Power Technology, [CHIM.MATE]Chemical Sciences/Material chemistry, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, [CHIM.OTHE]Chemical Sciences/Other, [SPI.NRJ] Engineering Sciences [physics]/Electric power
Abstract: The model activated carbon spheres (ACSs) were optimized to be used as negative electrode in asymmetric electrochemical capacitors (ECs). A microporous commercial activated carbon was used as positive electrode. Carbon spheres (CSs) were synthesized by precipitation polymerization at room temperature followed by pyrolysis and activation. By enhancing the carbon:KOH ratio from 1:2 to 1:4, an increase in the specific surface area from 380 m2 g−1 to 2835 m2 g−1 (1:4) was achieved along with an increase in pore volume/size. Consequently, the electrochemical performance in the aqueous electrolyte was improved. After activation, low-temperature-pyrolyzed polymer spheres (400 °C) result in random-like particles with macroporous structure, while intermediate- and high-temperature-pyrolyzed materials (550 °C and 700 °C) lead to partially and totally conserved spheres. The interaction between the electrode material and electrolyte is important and is related to the texture, morphology, and surface chemistry of ACS. In 1 mol L−1 H2SO4, capacitance and rate handling are mostly affected by electrode morphology and wettability with the electrolyte. In 1 mol L−1 Li2SO4 electrolyte solution, texture and surface chemistry of the electrode material are crucial to obtain high-performance EC. Regardless of morphology, poor wetting properties of synthesized materials were found in Li2SO4, compared to the H2SO4 solution., Journal of Power Sources, 542, ISSN:0378-7753, ISSN:1873-2755
Published: 2022
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7. What if we increase the number of objectives? Theoretical and empirical implications for many-objective combinatorial optimization

Author: Richard Allmendinger, Andrzej Jaszkiewicz, Arnaud Liefooghe, Christiane Tammer, University of Manchester [Manchester], Institute of Computing Science [Poznan], Poznan University of Technology (PUT), Optimisation de grande taille et calcul large échelle (BONUS), Inria Lille - Nord Europe, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189 (CRIStAL), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189 (CRIStAL), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Martin-Luther-Universität Halle Wittenberg (MLU), and ANR-16-CE23-0013,BigMO,Optimisation Multiobjectif Big(2016)
Subjects: Theoretical and empirical analysis, General Computer Science, Modeling and Simulation, [INFO]Computer Science [cs], Complexity of procedures and algorithms, [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO], [MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC], Management Science and Operations Research, Multi- and many-objective optimization, Problem characteristics, Survey, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI]
Abstract: International audience; The difficulty of solving a multi-objective optimization problem is impacted by the number of objectives to be optimized. The presence of many objectives typically introduces a number of challenges that affect the choice/design of optimization algorithms. This paper investigates the drivers of these challenges from two angles: (i) the influence of the number of objectives on problem characteristics and (ii) the practical behavior of commonly used procedures and algorithms for coping with many objectives. In addition to reviewing various drivers, the paper makes theoretical contributions by quantifying some drivers and/or verifying these drivers empirically by carrying out experiments on multi-objective combinatorial optimization problems (multi-objective NK-landscapes). We then make use of our theoretical and empirical findings to derive practical recommendations to support algorithm design. Finally, we discuss remaining theoretical gaps and opportunities for future research in the area of multi- and many-objective optimization.
Published: 2022
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8. Large shape staggering in neutron-deficient Bi isotopes

Author: A.V. Oleynichenko, Julian C. Berengut, Mark Bissell, Jean-Pierre Dognon, K. Chrysalidis, R. F. Garcia Ruiz, V. N. Fedosseev, B. Andel, Sacha Schiffmann, V. Panteleev, C. Raison, B. A. Marsh, C. Seiffert, G. J. Farooq-Smith, Magdalena Elantkowska, D. V. Fedorov, J. Karls, Thomas Elias Cocolios, Ephraim Eliav, Andréi Zaitsevskii, Sebastian Rothe, M. D. Seliverstov, Dominik Studer, M. Huyse, M. Al Monthery, Kara Marie Lynch, P. Mosat, K. Rezynkina, P. Van Duppen, P. Molkanov, L. V. Skripnikov, M. L. Reitsma, Ralf Erik Rossel, A. Barzakh, M. Stryjczyk, S. Péru, S. Sels, S. Hilaire, C. Granados, R. D. Harding, P. Larmonier, R. Heinke, J. G. Li (李冀光), S. Goriely, Anastasia Borschevsky, L. P. Gaffney, Jacek Bieron, Andrei Andreyev, T. Day Goodacre, Jarosław Ruczkowski, Michel Godefroid, M. Verlinde, Sebastian Wilman, S. Antalic, D. E. Maison, J. G. Cubiss, Pekka Pyykkö, National Research Centre 'Kurchatov Institute': Petersburg Nuclear Physics Institute, Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom, Advanced Science Research Center and Nuclear Science Research Institute, Japan Atomic Energy Agency, Japan Atomic Energy Agency, Instituut voor Kern- en Stralingsfysica (K.U. LEUVEN), Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), Laboratoire Matière sous Conditions Extrêmes (LMCE), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut d'Astronomie et d'Astrophysique [Bruxelles] (IAA), Université libre de Bruxelles (ULB), Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, School of Physics, University of New South Wales [Canberra Campus] (UNSW), Instytut Fizyki Teoretycznej, Uniwersytet Warszawski, School of Physics and Astronomy [Manchester], University of Manchester [Manchester], Van Swinderen Institute, University of Groningen [Groningen], European Organization for Nuclear Research (CERN), Institut für Physik Johannes Gutenberg Universität, Johannes Gutenberg - Universität Mainz (JGU), TRIUMF [Vancouver], Laboratoire Structure et Dynamique par Résonance Magnétique (LCF) (LSDRM), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Poznan University of Technology (PUT), School of Chemistry, Tel Aviv University [Tel Aviv], School of Computing and Engineering [London] (https://www.uwl.ac.uk/academic-schools/computing), University of West London, Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), CERC - Centre d'Études et de Recherches Comparatistes - EA 172 (CERC), Université Sorbonne Nouvelle - Paris 3, Department of Physics [Gothenburg], University of Gothenburg (GU), Institute of Applied Physics and Computational Mathematics [Beijing] (IAPCM), China Academy of Engineering Physics (CAEP), Saint Petersburg State University (SPBU), Department of Chemistry, Lomonosov Moscow State University, Lomonosov Moscow State University (MSU), Department of Chemistry [Helsinki], Falculty of Science [Helsinki], University of Helsinki-University of Helsinki, University of Jyväskylä (JYU), National Natural Science Foundation of China under Grant No. 11874090, Fonds de la Recherche Scientifique (F. R. S.-FNRS) and the Fonds Wetenschappelijk Onderzoek-Vlaanderen (FWO) under the EOS Project No. O022818F, by GOA/2015/010 (BOF KU Leuven), U.K. Science and Technology Facilities Council, Slovak Research and Development Agency (Contract No. APVV-18-0268), the Slovak grant agency VEGA (Contract No. 1/0651/21), RFBR according to the research projects N 19-02-00005 and N 20-32-70177, the Russian Science Foundation (Grant No. 19-72-10019), The foundation for the advancement of theoretical physics and mathematics 'BASIS' grant according to Projects No. 21-1-2-47-1 and No. 20-1-5-76-1, European Project: 771036,MAIDEN, European Project: 654002,H2020,H2020-INFRAIA-2014-2015,ENSAR2(2016), Comenius University in Bratislava, Johannes Gutenberg - Universität Mainz = Johannes Gutenberg University (JGU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Tel Aviv University (TAU), Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Precision Frontier, and Department of Chemistry
Subjects: Physics, Magnetic moment, 010308 nuclear & particles physics, 116 Chemical sciences, General Physics and Astronomy, [CHIM.MATE]Chemical Sciences/Material chemistry, 01 natural sciences, Physique atomique et nucléaire, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, Charge radius, Neutron number, 0103 physical sciences, Quadrupole, Nuclear Physics - Experiment, Neutron, Atomic physics, 010306 general physics, Spin (physics), Ground state, Magnetic dipole
Abstract: The changes in the mean-square charge radius (relative to 209Bi), magnetic dipole, and electric quadrupole moments of 187,188,189,191Bi were measured using the in-source resonance-ionization spectroscopy technique at ISOLDE (CERN). A large staggering in radii was found in 187,188,189Big, manifested by a sharp radius increase for the ground state of 188Bi relative to the neighboring 187,189Big. A large isomer shift was also observed for 188Bim. Both effects happen at the same neutron number, N=105, where the shape staggering and a similar isomer shift were observed in the mercury isotopes. Experimental results are reproduced by mean-field calculations where the ground or isomeric states were identified by the blocked quasiparticle configuration compatible with the observed spin, parity, and magnetic moment. ispartof: Physical Review Letters vol:127 issue:9 ispartof: location:United States status: published
Published: 2021
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9. On Designing and Implementing Agro-ecology IoT Applications: Issues from Applied Research Projects

Author: Sandro Bimonte, Amina Belhassena, Christophe Cariou, Jean Laneurit, Rim Moussa, Gerard Chalhoub, Robert Wrembel, Gauthier Picard, Ladjel Bellatreche, Alexandre Journaux, Thierry Heirman, Ali Hassan, Stefano Rizzi, Jean-Pierre George, Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Carthage - University of Carthage, Université Clermont Auvergne (UCA), Poznan University of Technology (PUT), ONERA / DTIS, Université de Toulouse [Toulouse], ONERA-PRES Université de Toulouse, Ecole Nationale Supérieure de Mécanique et d'Aérotechnique [Poitiers] (ISAE-ENSMA), Umanis France, Partenaires INRAE, DISI, University Bologna, Italy, Sandro Bimonte, Amina Belhassena, Christophe Cariou, Jean Laneurit, Rim Moussa, Gerard Chalhoub, Robert Wrembel, Gauthier Picard, Ladjel Bellatreche, Alexandre Journaux, Thierry Heirman, Ali Hassan, Stefano Rizzi, Jean-Pierre Georgé, Technologies et systèmes d'information pour les agrosystèmes (UR TSCF), Université de Clermont-Ferrand, Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes (LIMOS), Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national polytechnique Clermont Auvergne (INP Clermont Auvergne), Université Clermont Auvergne (UCA)-Université Clermont Auvergne (UCA), Génétique Physiologie et Systèmes d'Elevage (GenPhySE ), Ecole Nationale Vétérinaire de Toulouse (ENVT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-École nationale supérieure agronomique de Toulouse (ENSAT), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Systèmes Multi-Agents Coopératifs (IRIT-SMAC), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Toulouse Mind & Brain Institut (TMBI), Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), IEEE Comp Soc, Griffith Univ, Destinat Gold Coast, ANR-19-LCV2-0011,Tiara,Vers des robots intelligents et adaptables pour l'agriculture(2019), and ANR-16-IDEX-0001,CAP 20-25,CAP 20-25(2016)
Subjects: [PHYS]Physics [physics], Big data, smart farming, [SPI]Engineering Sciences [physics], Agriculture robots, Internet of Things, Big data, smart farming, Agriculture robots, Internet of Things, [INFO]Computer Science [cs], [MATH]Mathematics [math]
Abstract: International audience; The design and implementation of agro-ecology IoT applications is a non-trivial task since the data processed in such applications are typically complex and heterogeneous. Moreover, these applications are implemented using different systems and technologies, over complex IoT communication network layers (edge, fog, cloud). The existing system design methods fail to effectively represent data in such a scenario. In this position paper we report and discuss the open issues for a new, dedicated design method, based on our initial experience in implementing an agro-ecology IoT system.
Published: 2021
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10. Towards an Architecture for Agricultural Autonomous Robots’ Scheduling

Author: Amina Belhassena, Pietro Battistoni, Mateus Vilela Souza, Jean Laneurit, Rim Moussa, Sandro Bimonte, Robert Wrembel, Mouad Abouqateb, Christophe Cariou, Gerard Chalhoub, Geraldine Andre, Monica Sebillo, Bruno Bachelet, Technologies et systèmes d'information pour les agrosystèmes (UR TSCF), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), University of Salerno (UNISA), Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes (LIMOS), Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national polytechnique Clermont Auvergne (INP Clermont Auvergne), Université Clermont Auvergne (UCA)-Université Clermont Auvergne (UCA), Université de Carthage - University of Carthage, and Poznan University of Technology (PUT)
Subjects: Smart farming, Big data, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], Agriculture robots, Internet of Things, [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO], [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC]
Abstract: International audience; Smart farming and IoT technologies open up anew research agenda, which relates to different inter-relatedscopes within a Farm Management Information System, suchas robots’ programming, tasks’ scheduling, sensor data capture,management and processing at different layers of the IoTecosystem. Many research works address these topics, but to thebest of our knowledge none has contributed with a fully-featuredarchitecture design of monitoring and scheduling of autonomousagricultural robots. In this paper, we propose the skeleton ofarchitecture for such kind of IoT systems, called LambdAgrIoT.It is designed to support big data and different types of workload(real-time, near real-time, analytic, and transactional). Wepresent the main features of each layer, and the implementationdetails and its deployment of the Data Source and Speed layersin a real environment. The paper also discusses the open issuesrelated to the other layers and the deployment of the overallarchitecture at large scale.
Published: 2021
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11. New Perspectives in Scheduling Theory

Author: Jacek Blazewicz, Benjamin Moseley, Erwin Pesch, Denis Trystram, Guochuan Zhang, Institute of Computing Science [Poznan], Poznan University of Technology (PUT), Institute of Bioorganic Chemistry [Poznań], Polska Akademia Nauk = Polish Academy of Sciences (PAN), Data Aware Large Scale Computing (DATAMOVE ), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'Informatique de Grenoble (LIG), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Zhejiang University, Universität Siegen [Siegen], Handelshochschule Leipzig - Graduate School of Management (HHL), Tepper School of Business, and Carnegie Mellon University [Pittsburgh] (CMU)
Subjects: 021103 operations research, 010201 computation theory & mathematics, Artificial Intelligence, [INFO.INFO-DS]Computer Science [cs]/Data Structures and Algorithms [cs.DS], 0211 other engineering and technologies, General Engineering, 0102 computer and information sciences, 02 engineering and technology, Management Science and Operations Research, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], 01 natural sciences, Software, ComputingMilieux_MISCELLANEOUS
Abstract: International audience; short paper, no abstract
Published: 2021
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12. Perforation tests of composite structure specimens at wide range of temperatures and strain rates-experimental analysis

Author: Maciej Klósak, Amine Bendarma, H. Gourgue, S. Kardellass, Alexis Rusinek, Tomasz Jankowiak, International University of Agadir (Universiapolis), Mohammed VI Polytechnic University [Marocco] (UM6P), Poznan University of Technology (PUT), Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Laboratoire d'Innovation Durable et de Recherche Appliquée (LIDRA), and Ecole Polytechnique d'Agadir
Subjects: 010302 applied physics, Work (thermodynamics), Range (particle radiation), Materials science, Projectile, Glass fiber, Composite number, Perforation (oil well), 02 engineering and technology, Conical surface, Absorbed energy, 021001 nanoscience & nanotechnology, 01 natural sciences, [SPI]Engineering Sciences [physics], Impact loading, Composite structure, 0103 physical sciences, Thermal, Ballistic curves, Composite material, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract: International audience; The analysis of the mechanical characteristics and dynamic behavior of fiberglass composite material structure used for perforation tests based on experimental results will be presented. This work is focused on perforation tests carried out at two ranges of temperatures (21 and 60 °C) and high strain rates. By using the specially designed thermal chamber to heat specimens before impact. Based on this experimental series, the ballistic properties of the material impacted by a conical nose shape projectile is studied. The complete energy balance is also reported and the absorbed energy by the composite sheet has been obtained by measuring initial and residual projectile velocities. A wide range of impact velocities from 40 to 123 m/s has been covered during the tests. The projectile has a diameter of 12 mm and the plate has 4 mm thickness. The main objective of this work is to study the behavior of the composite material specimens during the impact. To study the temperature effects, two different temperatures were used material, at room temperature and 60 °C. The time needed to heat the specimen and to stabilize its temperature is 15 min.
Published: 2020
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13. RNA-Puzzles toolkit: a computational resource of RNA 3D structure benchmark datasets, structure manipulation, and evaluation tools

Author: Maciej Antczak, Jakub Wiedemann, Janusz M. Bujnicki, Eric Westhof, Yang Cao, Marcin Magnus, Tomasz Zok, Zhichao Miao, Piotr Lukasiak, Marta Szachniuk, Poznan Supercomputing and Networking Center (PSNC), Institute of Computing Science [Poznan], Poznan University of Technology (PUT), Architecture et réactivité de l'ARN (ARN), and Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)
Subjects: Normalization (statistics), Standardization, Data Resources and Analyses, Biology, Machine learning, computer.software_genre, Computational resource, 03 medical and health sciences, Software, Genetics, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, Nucleic acid structure, 030304 developmental biology, 0303 health sciences, business.industry, 030302 biochemistry & molecular biology, RNA, Computational Biology, [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, Visualization, Benchmarking, ComputingMethodologies_PATTERNRECOGNITION, Nucleic Acid Conformation, Artificial intelligence, Decoy, business, computer, Algorithms
Abstract: Significant improvements have been made in the efficiency and accuracy of RNA 3D structure prediction methods during the succeeding challenges of RNA-Puzzles, a community-wide effort on the assessment of blind prediction of RNA tertiary structures. The RNA-Puzzles contest has shown, among others, that the development and validation of computational methods for RNA fold prediction strongly depend on the benchmark datasets and the structure comparison algorithms. Yet, there has been no systematic benchmark set or decoy structures available for the 3D structure prediction of RNA, hindering the standardization of comparative tests in the modeling of RNA structure. Furthermore, there has not been a unified set of tools that allows deep and complete RNA structure analysis, and at the same time, that is easy to use. Here, we present RNA-Puzzles toolkit, a computational resource including (i) decoy sets generated by different RNA 3D structure prediction methods (raw, for-evaluation and standardized datasets), (ii) 3D structure normalization, analysis, manipulation, visualization tools (RNA_format, RNA_normalizer, rna-tools) and (iii) 3D structure comparison metric tools (RNAQUA, MCQ4Structures). This resource provides a full list of computational tools as well as a standard RNA 3D structure prediction assessment protocol for the community.
Published: 2019
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14. Metric for attractor overlap

Author: Marek Morzyński, Richard Semaan, Bernd R. Noack, Rishabh Ishar, Marian Albers, Pascal S. Meysonnat, Wolfgang Schröder, Daniel Fernex, Eurika Kaiser, Massachusetts Institute of Technology (MIT), University of Washington [Seattle], Poznan University of Technology (PUT), Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig], Rheinisch-Westfälische Technische Hochschule Aachen (RWTH), Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur (LIMSI), Université Paris Saclay (COmUE)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université - UFR d'Ingénierie (UFR 919), and Sorbonne Université (SU)-Sorbonne Université (SU)-Université Paris-Saclay-Université Paris-Sud - Paris 11 (UP11)
Subjects: Population, FOS: Physical sciences, 02 engineering and technology, Disjoint sets, Equilateral triangle, 01 natural sciences, [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph], 010305 fluids & plasmas, Physics::Fluid Dynamics, 0203 mechanical engineering, 0103 physical sciences, Attractor, education, Physics, education.field_of_study, Turbulence, Mechanical Engineering, Mathematical analysis, Fluid Dynamics (physics.flu-dyn), Centroid, Physics - Fluid Dynamics, Condensed Matter Physics, Boundary layer, 020303 mechanical engineering & transports, Mechanics of Materials, Drag
Abstract: We present the first general metric for attractor overlap (MAO) facilitating an unsupervised comparison of flow data sets. The starting point is two or more attractors, i.e., ensembles of states representing different operating conditions. The proposed metric generalizes the standard Hilbert-space distance between two snapshots to snapshot ensembles of two attractors. A reduced-order analysis for big data and many attractors is enabled by coarse-graining the snapshots into representative clusters with corresponding centroids and population probabilities. For a large number of attractors, MAO is augmented by proximity maps for the snapshots, the centroids, and the attractors, giving scientifically interpretable visual access to the closeness of the states. The coherent structures belonging to the overlap and disjoint states between these attractors are distilled by few representative centroids. We employ MAO for two quite different actuated flow configurations: (1) a two-dimensional wake of the fluidic pinball with vortices in a narrow frequency range and (2) three-dimensional wall turbulence with broadband frequency spectrum manipulated by spanwise traveling transversal surface waves. MAO compares and classifies these actuated flows in agreement with physical intuition. For instance, the first feature coordinate of the attractor proximity map correlates with drag for the fluidic pinball and for the turbulent boundary layer. MAO has a large spectrum of potential applications ranging from a quantitative comparison between numerical simulations and experimental particle-image velocimetry data to the analysis of simulations representing a myriad of different operating conditions., Comment: 33 pages, 20 figures
Published: 2019
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15. The Influence of Temperature in the Al 2024-T3 Aluminum Plates Subjected to Impact: Experimental and Numerical Approaches

Author: Alexis Rusinek, Amine Bendarma, Slim Bahi, Rafael Santiago, Maciej Klósak, Tomasz Jankowiak, Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), International University of Agadir (Universiapolis), Technology Innovation Institute, Abu Dhabi, and Poznan University of Technology (PUT)
Subjects: Technology, Materials science, Perforation (oil well), [PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph], 02 engineering and technology, Article, gas gun, law.invention, numerical simulations, 0203 mechanical engineering, law, Light-gas gun, Ballistic limit, General Materials Science, Material failure theory, Composite material, Softening, Microscopy, QC120-168.85, Projectile, QH201-278.5, Atmospheric temperature range, Engineering (General). Civil engineering (General), 021001 nanoscience & nanotechnology, Finite element method, TK1-9971, 020303 mechanical engineering & transports, Descriptive and experimental mechanics, high-velocity impact, Al 2024-T3 alloy, Electrical engineering. Electronics. Nuclear engineering, TA1-2040, 0210 nano-technology
Abstract: International audience; In this paper, perforation experiments were carried out and numerically modelled in order to analyze the response of 2024-T3 aluminum alloy plates under different initial temperatures T0. This alloy has a particular relevance since it is widely used as a structural component in aircrafts, but it is also interesting for other sectors of industry. A gas gun projectile launcher was used to perform impacts within initial velocities V0 from 40 m/s to 120 m/s and at temperatures varying from 293 K to 573 K. A temperature softening of the material was observed which was manifested in the reduction in the ballistic limit by 10% within the temperature range studied. Changes in the material failure mode were also observed at different test conditions. Additionally, a finite element model was developed to predict the material response at high velocities and to confirm the temperature softening that was observed experimentally. An optimization of the failure criterion resulted in a reliable model for such mild aluminum alloys. The results reported here may be used for different applications in the automotive and military sectors.
Published: 2021
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16. Galerkin force model for transient and post-transient dynamics of the fluidic pinball

Author: Bernd R. Noack, Marek Morzyński, Luc Pastur, Nan Deng, Institut des Sciences de la mécanique et Applications industrielles (IMSIA - UMR 9219), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Laboratoire Interdisciplinaire des Sciences du Numérique (LISN), CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), School of Mechanical Engineering and Automation, Harbin Institute of Technology (Shenzhen), Poznan University of Technology (PUT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-EDF R&D (EDF R&D), and Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn], FOS: Physical sciences, 01 natural sciences, 010305 fluids & plasmas, Physics::Fluid Dynamics, symbols.namesake, 0103 physical sciences, [NLIN]Nonlinear Sciences [physics], [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], 010306 general physics, Galerkin method, ComputingMilieux_MISCELLANEOUS, Physics, Hopf bifurcation, Mechanical Engineering, Fluid Dynamics (physics.flu-dyn), Reynolds number, Mechanics, Physics - Fluid Dynamics, Condensed Matter Physics, Vortex shedding, Symmetry (physics), Aerodynamic force, Pitchfork bifurcation, Flow (mathematics), Mechanics of Materials, symbols
Abstract: We propose an aerodynamic force model associated with a Galerkin model for the unforced fluidic pinball, the two-dimensional flow around three equal cylinders with one radius distance to each other. The starting point is a Galerkin model of a bluff-body flow. The force on this body is derived as a constant-linear-quadratic function of the mode amplitudes from first principles following the pioneering work of Noca (On the evaluation of time-dependent fluid-dynamic forces on bluff bodies. PhD thesis, California Institute of Technology, 1997), Noca et al. (J. Fluids Struct., vol. 13, issue 5, 1999, pp. 551–578) and Liang & Dong (Virtual force measurement of POD modes for a flat plate in low Reynolds number flows. AIAA Paper 2014-0054). The force model is simplified for the mean-field model of the unforced fluidic pinball (Deng et al., J. Fluid Mech., vol. 884, 2020, p. A37) using symmetry properties and sparse calibration. The model is successfully applied to transient and post-transient dynamics in different Reynolds number regimes: the periodic vortex shedding after the Hopf bifurcation and the asymmetric vortex shedding after the pitchfork bifurcation comprising six different Navier–Stokes solutions. We foresee many applications of the Galerkin force model for other bluff bodies and flow control.
Published: 2021
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17. Paradiseo: From a Modular Framework for Evolutionary Computation to the Automated Design of Metaheuristics

Author: Dreo, Johann, Liefooghe, Arnaud, Verel, Sébastien, Schoenauer, Marc, Merelo, Juan, Quemy, Alexandre, Bouvier, Benjamin, Gmys, Jan, Biologie systémique - Systems Biology, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), Optimisation de grande taille et calcul large échelle (BONUS), Inria Lille - Nord Europe, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189 (CRIStAL), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Informatique Signal et Image de la Côte d'Opale (LISIC), Université du Littoral Côte d'Opale (ULCO), TAckling the Underspecified (TAU), Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Interdisciplinaire des Sciences du Numérique (LISN), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Universidad de Granada = University of Granada (UGR), Poznan University of Technology (PUT), Chercheur indépendant, During 22 years, Paradiseo has been developed by more than 50 people, with the support of the following institutions: Inria, University of Lille, University of the Littoral Opal Coast, Thales, Ecole Polytechnique, University of Granada, Vrije Universiteit Amsterdam, Leiden University, French National Centre for Scientific Research (CNRS), French National Agency for Research (ANR), Fritz Haber Institute of the Max Planck Society, Center for Free-Electron Laser Science, University of Angers, French National Institute of Applied Sciences, Free University of Brussels, Pasteur Institute., ACM Sigevo, Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), Université de Lille-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Centrale Lille-Centre National de la Recherche Scientifique (CNRS), CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and University of Granada [Granada]
Subjects: Software Framework, Automated Algorithm Design, Metaheuristics, Evolutionary Computation, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], [INFO.INFO-MS]Computer Science [cs]/Mathematical Software [cs.MS]
Abstract: International audience; The success of metaheuristic optimization methods has led to the development of a large variety of algorithm paradigms. However, no algorithm clearly dominates all its competitors on all problems. Instead, the underlying variety of landscapes of optimization problems calls for a variety of algorithms to solve them efficiently. It is thus of prior importance to have access to mature and flexible software frameworks which allow for an efficient exploration of the algorithm design space. Such frameworks should be flexible enough to accommodate any kind of metaheuristics, and open enough to connect with higherlevel optimization, monitoring and evaluation softwares. This article summarizes the features of the Paradiseo framework, a comprehensive C++ free software which targets the development of modular metaheuristics. Paradiseo provides a highly modular architecture, a large set of components, speed of execution and automated algorithm design features, which are key to modern approaches to metaheuristics development.
Published: 2021
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18. Sodium borohydride (NaBH 4 ) as a high-capacity material for next-generation sodium-ion capacitors

Author: Thierry Brousse, Olivier Crosnier, Paweł Jeżowski, Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Poznan University of Technology (PUT), ANR-10-LABX-0076,STORE-EX,Laboratory of excellency for electrochemical energy storage(2010), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)
Subjects: sodium-ion capacitors, Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, 7. Clean energy, Capacitance, Energy storage, law.invention, Sodium borohydride, chemistry.chemical_compound, sacrificial salt, law, Materials Chemistry, QD1-999, Power density, sodium inorganic salt, Chemistry, composite carbon electrode, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Capacitor, Electrode, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], pre-sodiation, 0210 nano-technology, Tin, Capacity loss
Abstract: Energy storage is an integral part of the modern world. One of the newest and most interesting concepts is the internal hybridization achieved in metal-ion capacitors. In this study, for the first time we used sodium borohydride (NaBH4) as a sacrificial material for the preparation of next-generation sodium-ion capacitors (NICs). NaBH4 is a material with large irreversible capacity of ca. 700 mA h g−1 at very low extraction potential close to 2.4 vs Na+/Na0. An assembled NIC cell with the composite-positive electrode (activated carbon/NaBH4) and hard carbon as the negative one operates in the voltage range from 2.2 to 3.8 V for 5,000 cycles and retains 92% of its initial capacitance. The presented NIC has good efficiency >98% and energy density of ca. 18 W h kg−1 at power 2 kW kg−1 which is more than the energy (7 W h kg−1 at 2 kW kg−1) of an electrical double-layer capacitor (EDLC) operating at voltage 2.7 V with the equivalent components as in NIC. Tin phosphide (Sn4P3) as a negative electrode allowed the reaching of higher values of the specific energy density 33 W h kg−1 (ca. four times higher than EDLC) at the power density of 2 kW kg−1, with only 1% of capacity loss upon 5,000 cycles and efficiency >99%.
Published: 2021
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19. A theoretical and experimental study of a new algorithm for minimum cost flow in dynamic graphs

Author: Mathilde Vernet, Maciej Drozdowski, Eric Sanlaville, Yoann Pigné, Equipe Réseaux d'interactions et Intelligence Collective (RI2C - LITIS), Laboratoire d'Informatique, de Traitement de l'Information et des Systèmes (LITIS), Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Normandie Université (NU), Institute of Computing Science [Poznan], and Poznan University of Technology (PUT)
Subjects: Successive shortest path algorithm, Computational complexity theory, Applied Mathematics, Computation, [INFO.INFO-DS]Computer Science [cs]/Data Structures and Algorithms [cs.DS], 0211 other engineering and technologies, Minimum cost flow, 021107 urban & regional planning, Time horizon, 0102 computer and information sciences, 02 engineering and technology, [INFO.INFO-DM]Computer Science [cs]/Discrete Mathematics [cs.DM], 01 natural sciences, Graph, Travel time, 010201 computation theory & mathematics, Discrete Mathematics and Combinatorics, Minimum-cost flow problem, Dynamic graph, Algorithm, Large size, Mathematics
Abstract: International audience; This work focuses on the minimum cost flow problem in dynamic graphs. The model here proposed does not have travel time nor storage but all other parameters are time-dependent. The most popular method to solve this kind of problem uses the time-expanded graph but due to the large size of this graph, this solution technique is not manageable on a long time horizon. We propose a new approach that does not use the time-expanded graph. Our algorithm is based on the computation of successive shortest paths on static graphs, which are much smaller compared to the time-expanded graph. It has a significantly better computational complexity. Our method was implemented using the GraphStream library and experiments showed that it is also much faster than the classical method in practice.
Published: 2021
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20. Hypergraph Case-based Reasoning applied to Brain-Computer Interfaces: A Pilot Study

Author: Cattan, Grégoire, Quemy, Alexandre, CATTAN, Grégoire, IBM - Cloud and Cognitive Software, and Poznan University of Technology (PUT)
Subjects: Interface Cerveau-Ordinateur (ICO), [INFO.INFO-AI] Computer Science [cs]/Artificial Intelligence [cs.AI], ACM: K.: Computing Milieux/K.8: PERSONAL COMPUTING/K.8.0: General, Human-Computer Interaction (HCI), Classification Non Structurée, [SCCO.COMP]Cognitive science/Computer science, ACM: G.: Mathematics of Computing, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], Électroencéphalographie (EEG), [SCCO.COMP] Cognitive science/Computer science, [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC], Electroencephalography (EEG), P300, Hypergraph Case-based Reasoning (HCBR), Unstructured Classification, [SCCO.NEUR]Cognitive science/Neuroscience, [SCCO.NEUR] Cognitive science/Neuroscience, Interaction Homme-Machine (IHM), Interface Cerveau-Machine (ICM), Event-Related Potential (ERP), Potentiels Evoqués Cognitifs (PEC), Apprentissage de Métrique, Raisonnement par Cas basé sur un Hypergraphe (RCH), Supervised Learning, [INFO.INFO-HC] Computer Science [cs]/Human-Computer Interaction [cs.HC], Brain-Computer Interface (BCI), Metric Learning, Apprentissage Supervisé
Abstract: Signal analysis of brain-computer interface (BCI) based on electroencephalography (EEG) is complex and, therefore constitutes a practical impediment for application developers and content providers. In this study, we evaluate the use of the hypergraph case-based reasoning (HCBR) classifier to simplify EEG analysis, by reducing the number of pre-processing steps. Direct and preprocessed data were given as input to HCBR. Maximal performance was achieved with preprocessed data, thereby invalidating our initial hypothesis. Best testing (predicting) accuracy was 71.10 (52.04) %. This shows that the classifier was able to learn from the data, but that more research is required to obtain better predicting accuracy. This could be achieved by enlarging the number of trials through transfer learning., L’analyse du signal des interfaces cerveau-machines (ICM) basée sur l’électroencéphalographie (EEG) est complexe et constitue un obstacle pour les développeurs d’applications et les créateurs de contenus. Dans cette étude, nous évaluons l’utilisation du classifieur HCBR, qui évolue dans un espace non-structuré (raisonnement par cas) afin de simplifier l’analyse EEG en réduisant le nombre d’étapes de prétraitement. Des données directes et prétraitées ont été fournies en entrée du classifieur. La performance du classifieur était meilleur avec les donnes prétraitées, invalidant par conséquent notre hypothèse initiale. La précision maximale obtenue par le classifieur était respectivement de 71.10 % et 52.04 % lors de la phase de test et de prédiction (sur des données prétraitées). Ceci indique que HCBR est capable d'apprendre à partir des données, mais que davantage d’efforts restent nécessaires pour obtenir une meilleure précision lors de la prédiction - par exemple en augmentant le nombre d’essais grâce au transfert d’apprentissage.
Published: 2021

21. Stabilization of the fluidic pinball with gradient-enriched machine learning control

Author: Yiqing Li, Guy Y. Cornejo Maceda, Bernd R. Noack, François Lusseyran, Marek Morzyński, Laboratoire Interdisciplinaire des Sciences du Numérique (LISN), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Harbin Institute of Technology (HIT), Poznan University of Technology (PUT), Technical University of Berlin / Technische Universität Berlin (TU), ANR-17-ASTR-0022,FLOwCON,Contrôle d'écoulements turbulents en boucle fermée par apprentissage automatique(2017), ANR-11-LABX-0056,LMH,LabEx Mathématique Hadamard(2011), and CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
Subjects: Source code, Computer science, media_common.quotation_subject, machine learning and optimization, Flow (psychology), FOS: Physical sciences, Genetic programming, 02 engineering and technology, Machine learning, computer.software_genre, 01 natural sciences, 010305 fluids & plasmas, 0203 mechanical engineering, [INFO.INFO-LG]Computer Science [cs]/Machine Learning [cs.LG], 0103 physical sciences, [INFO.INFO-SY]Computer Science [cs]/Systems and Control [cs.SY], [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], media_common, Flow control (data), Forcing (recursion theory), business.industry, Mechanical Engineering, Fluid Dynamics (physics.flu-dyn), Phasor, Rotational speed, Physics - Fluid Dynamics, Condensed Matter Physics, Flow control, 020303 mechanical engineering & transports, Mechanics of Materials, wake flows, Artificial intelligence, business, Gradient method, computer
Abstract: We stabilize the flow past a cluster of three rotating cylinders, the fluidic pinball, with automated gradient-enriched machine learning algorithms. The control laws command the rotation speed of each cylinder in an open- and closed-loop manner. These laws are optimized with respect to the average distance from the target steady solution in three successively richer search spaces. First, stabilization is pursued with steady symmetric forcing. Second, we allow for asymmetric steady forcing. And third, we determine an optimal feedback controller employing nine velocity probes downstream. As expected, the control performance increases with every generalization of the search space. Surprisingly, both open- and closed-loop optimal controllers include an asymmetric forcing, which surpasses symmetric forcing. Intriguingly, the best performance is achieved by a combination of phasor control and asymmetric steady forcing. We hypothesize that asymmetric forcing is typical for pitchfork bifurcated dynamics of nominally symmetric configurations. Key enablers are automated machine learning algorithms augmented with gradient search: explorative gradient method for the open-loop parameter optimization and a gradient-enriched machine learning control (gMLC) for the feedback optimization. gMLC learns the control law significantly faster than previously employed genetic programming control. The gMLC source code is freely available online., Comment: 45 pages, 23 figures
Published: 2021
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22. Link between Alkali Metals in Salt Templates and in Electrolytes for Improved Carbon-Based Electrochemical Capacitors

Author: Cristina Nita, Anetta Platek-Mielczarek, Elzbieta Frackowiak, Krzysztof Fic, Camelia Matei Ghimbeu, Poznan University of Technology (PUT), Institut de Science des Matériaux de Mulhouse (IS2M), Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), National Institute for Lasers, Plasma, and Radiation Physics [Magurele-Ilfov] (INFLPR), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Ghimbeu, Camelia, and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )
Subjects: Materials science, soft-salt template, Metal hydroxide, aqueous electrolyte, 02 engineering and technology, Electrolyte, 010402 general chemistry, Electrochemistry, 01 natural sciences, Capacitance, Specific surface area, General Materials Science, [CHIM.MATE] Chemical Sciences/Material chemistry, electrochemical capacitor, Microporous material, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Alkali metal, 0104 chemical sciences, Chemical engineering, [CHIM.OTHE] Chemical Sciences/Other, templated carbon, 0210 nano-technology, Mesoporous material, [CHIM.OTHE]Chemical Sciences/Other, cation match, Research Article
Abstract: International audience; Various alkali metal (Li+, Na+, K+, Rb+, and Cs+) chlorides with Pluronic F127 were used as a soft-salt template for tuning the textural and structural properties of carbon. Highly conductive metal hydroxide solutions, where the cations are the same as those in the salt template, have been used as electrolytes. By increasing the size of the cation in the template, the textural properties of carbon, such as the specific surface area, micropore volume, and pore size, were remarkably enhanced. It directly translates to an increase in the specific capacitance of the electrode material. For a constant current charge/discharge at 0.1 A g–1, the electrode composed of LiCl-T and operating with 1 mol L–1 LiOH demonstrates the capacitance of 124 F g–1, whereas CsCl-T with the same electrolyte has a capacitance of 216 F g–1. Moreover, the materials show the highest capacitance retention (up to 75%) vs. the current regime applied when the cation used during synthesis matches the cation present in the electrolyte (i.e., LiCl-T with LiOH). Interestingly, capacitance normalized by specific surface area has been found to be the highest when LiOH solution is applied as an electrolyte. Thus, for this metric, the size of ions seems to be a crucial parameter. The importance of mesoporosity is highlighted as well by using materials with a similar fraction of micropores and with or without mesopores. Briefly, the presence of mesopore fraction proved to be essential for improved capacity retention (69% vs. 30%). Besides textural properties, the graphitization degree impacts the electrochemical performance as well. It increases among the samples, in accordance with cation-π binding energy, e.g., LiCl-T is the most “graphitic-like” material and CsCl-T is the most disordered. Thus, the more graphitic-like materials demonstrate higher rate capability and cycle stability.
Published: 2021
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23. Advances in Data Management in the Big Data Era

Author: Florence Sedes, Sylvio Barbon, Robert Wrembel, Valerio Bellandi, Monica Scannapieco, Jaroslav Pokorny, Gabriel Marques Tavares, Paolo Ceravolo, Antonia Azzini, Tiziana Catarci, Philippe Cudré-Mauroux, Samira Maghool, Consorzio per il Trasferimento Tecnologico (C2T), State University of Londrina = Universidade Estadual de Londrina, Università degli Studi di Milano [Milano] (UNIMI), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], eXascale Infolab [Fribourg], Charles University [Prague] (CU), Istituto Nazionale di Statistica (ISTAT), ISTAT, Systèmes d’Informations Généralisées (IRIT-SIG), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Poznan University of Technology (PUT), Azzini, A., Barbon Junior, S., Bellandi, V., Catarci, T., Ceravolo, P., Cudre-Mauroux, P., Maghool, S., Pokorny, J., Scannapieco, M., Sedes, F., Tavares, G. M., and Wrembel, R.
Subjects: Data stream, Computer science, Data management, Big data, 02 engineering and technology, computer.software_genre, 020204 information systems, Metadata management, Knowledge graphs, 0202 electrical engineering, electronic engineering, information engineering, [INFO]Computer Science [cs], Knowledge graph, Metadata, Data stream mining, business.industry, Data integration, Data quality, Data streams, Fog computing, Data science, 020201 artificial intelligence & image processing, business, computer
Abstract: TC 2: Software: Theory and Practice; International audience; Highly-heterogeneous and fast-arriving large amounts of data, otherwise said Big Data, induced the development of novel Data Management technologies. In this paper, the members of the IFIP Working Group 2.6 share their expertise in some of these technologies, focusing on: recent advancements in data integration, metadata management, data quality, graph management, as well as data stream and fog computing are discussed.
Published: 2021
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24. Machine learning control and modeling -How taming turbulence can be made easy, efficient, fast and fun!

Author: Noack, Bernd R., Li, Yiqing, Fan, Dewei, Zhou, Yu, Li, Hao, Tan, Jianguo, Maceda, Guy Cornejo, Lusseyran, François, Deng, Nan, Pastur, Luc, Fernex, Daniel, Semaan, Richard, Albers, Marian, Schröder, Wolfgang, Morzynski, Marek, Brunton, Steven L., Laboratoire Interdisciplinaire des Sciences du Numérique (LISN), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), College of Agriculture, Forestry and Natural Resource Management, University of Hawaii at Hilo, Harbin Institute of Technology (HIT), Division of Physics and Applied Physics [Nanyang Technological University] (SPMS-PAP-02-01), Nanyang Technological University [Singapour], Laboratoire de Mécanique et Technologie (LMT), École normale supérieure - Cachan (ENS Cachan)-Centre National de la Recherche Scientifique (CNRS), National University of Defense Technology [China], Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur (LIMSI), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), DAtascience, trAnsition, Fluid instability, contrOl, Turbulence (DATAFLOT), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Mécanique-Energétique (M.-E.), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), École Nationale Supérieure de Techniques Avancées (ENSTA Paris), Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig], Institut für Biochemie, Biotechnologie und Bioinformatik [TU, Braunschweig], Rheinisch-Westfälische Technische Hochschule Aachen University (RWTH), Poznan University of Technology (PUT), and University of Washington [Seattle]
Subjects: [SPI]Engineering Sciences [physics]
Abstract: International audience; Closed-loop turbulence control has current and future engineering applications of truly epic proportions, including cars, trains, airplanes, jet noise, air conditioning, medical applications, wind turbines, combustors, and energy systems, i.e., well-known topics in the GDR 2502. A key feature, opportunity and technical challenge is the inherent nonlinearity of the actuation response [1]. For instance, excitation at a given frequency will affect also other frequencies. This frequency cross-talk is not accessible in any linear control framework. Recently, Artificial Intelligence (AI) / Machine Learning (ML) has opened game-changing new avenues [2]: the automated model-free discovery and exploitation of unknown nonlinear actuation mechanisms directly in the plant and the automated reduced-order modeling from these data. In this talk, we review recent successes on these avenues for broadband frequency turbulence with distributed actuators. Methodological advances include (1) a ML response model predicting performance increases by actuation [3]. (2) the cluster-based network model for automated robust identification of coherent-structure dynamics [4], (3) the explorative gradient method for actuation optimization with the convergence rate of a gradient method and an exploration of global minima [6], and, last but not least, (4) a novel fast-learning gradient-enriched machine learning control which optimizes MIMO feedback laws [5]. Thus, we achieve: (1) 31% drag reduction of a turbulent boundary layer with spanwise traveling surface waves [3, 4], (2) 17% drag reduction of a slanted Ahmed body with 5 groups of orientable actuation jets [6], (3) a significant increase of mixing of a turbulent jet with a novel distributed unsteady actuation [7] and (4) an understanding of the coherent structure dynamics. Nan Deng and Guy Cornejo Maceda will elaborate recent advances for the fluidic pinball during in this meeting.
Published: 2020

25. Optimal Tuning of the Lateral-Dynamics Parameters for Aerial Vehicles with Bounded Lateral Force

Author: Antonio Franchi, Dariusz Horla, Mahmoud Hamandi, Wojciech Giernacki, Poznan University of Technology (PUT), Équipe Robotique et InteractionS (LAAS-RIS), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse 1 Capitole (UT1)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées, University of Twente [Netherlands], Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), and University of Twente
Subjects: 0209 industrial biotechnology, Control and Optimization, Computer science, Motion Control, Biomedical Engineering, Thrust, 02 engineering and technology, 01 natural sciences, Aerial Systems: Mechanics and Control, Attitude control, Vehicle dynamics, 020901 industrial engineering & automation, Artificial Intelligence, Control theory, Position (vector), [INFO.INFO-RB]Computer Science [cs]/Robotics [cs.RO], Mechanical Engineering, 010401 analytical chemistry, Motion control, 0104 chemical sciences, Computer Science Applications, Human-Computer Interaction, Nonlinear system, Control and Systems Engineering, Bounded function, Computer Vision and Pattern Recognition, Aerial Systems: Applications
Abstract: International audience; This letter shows for the first time why it is important and how to optimize the gains of a position controller on board of a fully-actuated aerial vehicle with bounded lateral force, via an auto-tuning approach. In such vehicles, most of the control authority is expressed along a principal thrust direction, while along the lateral directions smaller forces can be exploited to achieve full-pose tracking. The nonlinear and hard to model interplay between the constraint imposed on the lateral force and the gains of the position controller is overcome employing the OPTIM-tune calibration method. Several experimental tests, performed fully autonomously during flight, clearly show the practicability and benefits of the approach.
Published: 2020
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26. 24th European Conference on Advances in Databases and Information Systems (ADBIS 2020)

Author: Darmont, Jérôme, Novikov, Boris, Wrembel, Robert, Entrepôts, Représentation et Ingénierie des Connaissances (ERIC), Université Lumière - Lyon 2 (UL2)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, National Research University, HigherSchool of Economics, and Poznan University of Technology (PUT)
Subjects: Databases, [INFO.INFO-DB]Computer Science [cs]/Databases [cs.DB], ACM: H.: Information Systems, ACM: H.: Information Systems/H.2: DATABASE MANAGEMENT, Information Systems
Abstract: International audience; The 24th European Conference on Advances in Databases and Information Systems(ADBIS 2020) was set to be held in Lyon, France, during August 25–28, 2020, inconjunction with the 24th International Conference on Theory and Practice of DigitalLibraries (TPDL 2020) and the 16th EDA days on Business Intelligence & Big Data(EDA 2020). However, because of the worldwide COVID-19 crisis, ADBIS, TPDL,and EDA had to take place online during August 25–27, 2020. Yet, the three con-ferences joined their forces to propose common keynotes, workshops, and a DoctoralConsortium.
Published: 2020
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27. Engaging nanoporous carbons in 'beyond adsorption' applications: Characterization, challenges and performance

Author: Krisztina László, Teresa J. Bandosz, François Béguin, Conchi O. Ania, Juan Matos, Miguel A. Gilarranz, Phillip A. Armstrong, Elzbieta Frackowiak, Ana P. Carvalho, M. Fernando R. Pereira, Alain Celzard, Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université d'Orléans (UO), Morgan Advanced Materials, The City College of New York (CCNY), City University of New York [New York] (CUNY), Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology (PUT), Universidade de Lisboa (ULISBOA), Institut Jean Lamour (IJL), Université de Lorraine (UL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Department of Chemical Engineering, University Autónoma de Madrid (UAM), Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics [Budapest] (BME)-Inconnu, Universidad de Concepción [Chile], Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia (LSRE-LCM), and Universidade do Porto
Subjects: Energy storage, catalysis, Nanoporous, Computer science, [SDE.IE]Environmental Sciences/Environmental Engineering, Characterization, surface chemistry, 02 engineering and technology, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, [CHIM.CATA]Chemical Sciences/Catalysis, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Data science, Nanoporous carbons, 0104 chemical sciences, Characterization (materials science), Porous carbon, Adsorption, 13. Climate action, General Materials Science, Defects, 0210 nano-technology
Abstract: International audience; This paper addresses the challenges of explaining the behavior of porous carbons in cutting-edge applications related to energy storage, catalysis, photocatalysis, and advanced separation based on reactive adsorption. It is a summary of the outcomes of the extensive discussion which took place during the workshop “Beyond Adsorption-II: new perspectives and challenges for nanoporous carbons,” organized as a satellite event to the International Carbon Conference on July 20th , 2019 in New York. It is not our intention to provide a tutorial on the applications, characterization or performance testing of porous carbons; we would rather like to focus on the controversy of the results and phenomena, on the explanation of findings, and on raising concerns to the growing carbon-researching scientific community about the importance of understanding the features of nanoporous carbons by choosing an appropriate characterization technique that will bring meaningful information. We want to emphasize that nanoporous carbons have unique features ensuring them making a marked advance in science and technology. Even though recent studies have shown their potential in various emerging applications, the origin of such performance is not yet well understood. Thus, scientists are encouraged to focus on a precise characterization of porous carbons using a set of complementary techniques for triggering future technological developments.
Published: 2020
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28. The Optical Aspect of Errors in Measurements of Surface Asperities Using the Optical Profilometry Method

Author: Karol Grochalski, Gaëtan Le Goïc, Michał Wieczorowski, Jihad H’roura, Poznan University of Technology (PUT), Laboratoire Image et Reconnaissance de Formes - Systèmes Intelligents et Communicants (IRF-SIC), Université Ibn Zohr [Agadir], Département de Mathématiques, Laboratoire Electronique, Informatique et Image [UMR6306] (Le2i), Université de Bourgogne (UB)-École Nationale Supérieure d'Arts et Métiers (ENSAM), Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Imagerie et Vision Artificielle [Dijon] (ImViA), and Université de Bourgogne (UB)
Subjects: Surface (mathematics), Materials science, Microscope, lcsh:Mechanical engineering and machinery, focus variation, 02 engineering and technology, Industrial and Manufacturing Engineering, law.invention, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], Optics, 0203 mechanical engineering, law, Microscopy, polarizer, lcsh:TJ1-1570, [INFO]Computer Science [cs], General Materials Science, Focus variation, business.industry, Mechanical Engineering, optical error, surface topography, Polarizer, 021001 nanoscience & nanotechnology, Sample (graphics), Computer Science Applications, Lens (optics), Optical axis, 020303 mechanical engineering & transports, 0210 nano-technology, business, optical profilometer
Abstract: International audience; The paper presents the impact of lighting type and direction on measurements of surface asperities using focus-variation microscopy. Particular attention was paid to the direction of lighting when using a light ring. It was pointed out that the lighting direction directly affects the values of the parameters Rt, Rz, and Rc. The article also presents the impact of a light polarizer on the surface topography parameters. It has been shown that the positioning of a sample with a regular and directed structure relative to the optical axis of the light polarizer affects the accuracy of mapping surface asperities. The largest differences were observed for Rz and Rt parameters. A method of using an external polarizer mounted on a focus variation microscope lens was also presented. Keywords: surface topography
Published: 2020
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29. Modèle de force basé sur les dynamiques transitoires de sillage dans le pinball fluidique

Author: Deng, Nan, Pastur, Luc, Bernd R., Noack, Cornejo Maceda, Guy, Lusseyran, François, LOISEAU, Jean-Christophe, Morzyński, Marek, Institut des Sciences de la mécanique et Applications industrielles (IMSIA - UMR 9219), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur (LIMSI), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Harbin Institute of Technology (HIT), Laboratoire de Dynamique des Fluides (DynFluid), Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Poznan University of Technology (PUT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-EDF R&D (EDF R&D), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Arts et Métiers Sciences et Technologies, and HESAM Université (HESAM)-HESAM Université (HESAM)
Subjects: [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn], [NLIN]Nonlinear Sciences [physics], [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2020

30. Energy monitoring as an essential building block towards sustainable ultrascale systems

Author: Jorge G. Barbosa, Manuel F. Dolz, Marcos Dias De Assuncao, Helen D. Karatza, Ivona Brandic, Jean-Marc Pierson, Georges Da Costa, Francisco Almeida, Ilias Mavridis, Vicente Blanco, Ariel Oleksiak, Anne C. Elster, Anne-Cécile Orgerie, Laurent Lefèvre, Mateusz Jarus, Universidad de La Laguna [Tenerife - SP] (ULL), Algorithms and Software Architectures for Distributed and HPC Platforms (AVALON), Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire de l'Informatique du Parallélisme (LIP), Centre National de la Recherche Scientifique (CNRS)-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École normale supérieure - Lyon (ENS Lyon), Laboratoire de l'Informatique du Parallélisme (LIP), Departamento de matematica aplicada [Porto] (LIACC), Universidade do Porto, Vienna University of Technology (TU Wien), Système d’exploitation, systèmes répartis, de l’intergiciel à l’architecture (IRIT-SEPIA), Institut de recherche en informatique de Toulouse (IRIT), Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Université Toulouse III - Paul Sabatier (UT3), Universidad Carlos III de Madrid [Madrid] (UC3M), Department of Electronic Systems [Trondheim] (IES NTNU), Norwegian University of Science and Technology [Trondheim] (NTNU), Norwegian University of Science and Technology (NTNU)-Norwegian University of Science and Technology (NTNU), Poznan Supercomputing and Networking Center (PSNC), Aristotle University of Thessaloniki, Poznan University of Technology (PUT), Design and Implementation of Autonomous Distributed Systems (MYRIADS), Inria Rennes – Bretagne Atlantique, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-SYSTÈMES LARGE ÉCHELLE (IRISA-D1), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Rennes 1 (UR1), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Nesus European COST Action IC1305European Commission under contract 288701 through the project CoolEmAlFrench Fonds national pour la Societe Numerique (FSN) XLCloudGrid5000FWF through project Y 904 START-Program 2015, Grid5000, Avalon, Myriads, Université de Bretagne Sud (UBS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-CentraleSupélec-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Bretagne Sud (UBS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Faculdade de Engenharia, Aristotle University of Thessaloniki (GREECE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut National de la Recherche en Informatique et en Automatique - INRIA (FRANCE), Institut National des Sciences Appliquées de Rennes - INSA (FRANCE), Norwegian University of Science and Technology - NTNU (NORWAY), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Toulouse - Jean Jaurès - UT2J (FRANCE), Université Toulouse 1 Capitole - UT1 (FRANCE), Poznan Supercomputing and Networking Center - PSNC (POLAND), Université de Bretagne Sud - UBS (FRANCE), Universität Wien (AUSTRIA), Universidad Carlos III de Madrid - UC3M (SPAIN), Universidad de La Laguna - ULL (SPAIN), Universidade do Porto - UP (PORTUGAL), Université de Rennes 1 (FRANCE), Institut de Recherche en Informatique de Toulouse - IRIT (Toulouse, France), Institut de Recherche en Informatique et Systèmes Aléatoires - IRISA (Rennes, France), Institut National Polytechnique de Toulouse - INPT (FRANCE), Universidad de La Laguna ( ULL ), Algorithms and Software Architectures for Distributed and HPC Platforms ( AVALON ), Institut National de Recherche en Informatique et en Automatique ( Inria ) -Institut National de Recherche en Informatique et en Automatique ( Inria ) -Laboratoire de l'Informatique du Parallélisme ( LIP ), École normale supérieure - Lyon ( ENS Lyon ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique ( Inria ) -Centre National de la Recherche Scientifique ( CNRS ) -École normale supérieure - Lyon ( ENS Lyon ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de l'Informatique du Parallélisme ( LIP ), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique ( Inria ) -Centre National de la Recherche Scientifique ( CNRS ), Departamento de matematica aplicada [Porto] ( LIACC ), University of Porto, Technical University of Vienna [Vienna] ( TU WIEN ), Institut de recherche en informatique de Toulouse ( IRIT ), Institut National Polytechnique [Toulouse] ( INP ) -Université Toulouse 1 Capitole ( UT1 ) -Université Toulouse - Jean Jaurès ( UT2J ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Universidad Carlos III de Madrid [Madrid], Department of Electronics and Telecommunications [Norwegian University of Science and Technology], Norwegian University of Science and Technology [Trondheim] ( NTNU ), Poznan Supercomputing and Networking Center ( PSNC ), Poznan University of Technology, Design and Implementation of Autonomous Distributed Systems ( MYRIADS ), Institut National de Recherche en Informatique et en Automatique ( Inria ) -Institut National de Recherche en Informatique et en Automatique ( Inria ) -SYSTÈMES LARGE ÉCHELLE ( IRISA_D1 ), Institut de Recherche en Informatique et Systèmes Aléatoires ( IRISA ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National des Sciences Appliquées - Rennes ( INSA Rennes ) -Université de Bretagne Sud ( UBS ) -École normale supérieure - Rennes ( ENS Rennes ) -Institut National de Recherche en Informatique et en Automatique ( Inria ) -CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ) -IMT Atlantique Bretagne-Pays de la Loire ( IMT Atlantique ) -Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National des Sciences Appliquées - Rennes ( INSA Rennes ) -Université de Bretagne Sud ( UBS ) -École normale supérieure - Rennes ( ENS Rennes ) -Institut National de Recherche en Informatique et en Automatique ( Inria ) -CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ) -IMT Atlantique Bretagne-Pays de la Loire ( IMT Atlantique ) -Institut de Recherche en Informatique et Systèmes Aléatoires ( IRISA ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Institut National des Sciences Appliquées - Rennes ( INSA Rennes ) -Université de Bretagne Sud ( UBS ) -École normale supérieure - Rennes ( ENS Rennes ) -CentraleSupélec-Centre National de la Recherche Scientifique ( CNRS ) -IMT Atlantique Bretagne-Pays de la Loire ( IMT Atlantique ), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre National de la Recherche Scientifique (CNRS), Universidade do Porto = University of Porto, Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Toulouse Mind & Brain Institut (TMBI), Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique)
Subjects: Ultra large-scale systems, Monitoring, General Computer Science, Computer science, [ INFO.INFO-NI ] Computer Science [cs]/Networking and Internet Architecture [cs.NI], 020209 energy, energy-efficiency, Big data, Ultra-large-scale systems, Système d'exploitation, Réseaux et télécommunications, Engenharia electrotécnica, electrónica e informática [Ciências da engenharia e tecnologias], 02 engineering and technology, Bottleneck, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], [ INFO.INFO-DC ] Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], Architectures Matérielles, Computer engineering, Electrical engineering, Electronic engineering, Information engineering, 0202 electrical engineering, electronic engineering, information engineering, energy-awareness, Electrical and Electronic Engineering, Simulation, Block (data storage), Energy-efficiency, business.industry, Information and Computer Science, Systèmes embarqués, Electrical engineering, Electronic engineering, Information engineering [Engineering and technology], monitoring, Engenharia de computadores, Engenharia electrotécnica, electrónica e informática, Risk analysis (engineering), Information technology management, Sustainability, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], business, Energy-awareness, Efficient energy use
Abstract: International audience; An Ultrascale System (USS) joins parallel and distributed computing systems that will be two to three orders of magnitude larger than today's infrastructure regarding scale, performance, the number of components and their complexity. For such systems to become a reality, however, advances must be made in High Performance Computing (HPC), large-scale distributed systems, and big data solutions, also tackling challenges such as improving the energy efficiency of the IT infrastructure. Monitoring the power consumed by underlying IT resources is essential towards optimising the manner IT resources are used and hence improve the sustainability of such systems. Nevertheless, monitoring the energy consumed by USSs is a challenging endeavour as the system can comprise thousands of heterogeneous server resources spanning multiple data centres. Moreover, the amount of monitoring data, its gathering, and processing , should never become a bottleneck nor profoundly impact the energy efficiency of the overall system. This work surveys state of the art on energy monitoring of large-scale systems and methodologies for monitoring the power consumed by large systems and discusses some of the challenges to be addressed towards monitoring and improving the energy efficiency of USSs. Next, we present efforts made on designing monitoring solutions. Finally, we discuss potential gaps in existing solutions when tackling emerging large-scale monitoring scenarios and present some directions for future research on the topic.
Published: 2018
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31. Advances in Databases and Information Systems

Author: Patrick Valduriez, Ladjel Bellatreche, Tadeusz Morzy, Laboratoire d'Informatique et d'Automatique pour les Systèmes (LIAS), Université de Poitiers-ENSMA, Institut de Biologie Computationnelle (IBC), Université de Montpellier (UM)-Institut National de la Recherche Agronomique (INRA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Centre National de la Recherche Scientifique (CNRS), Scientific Data Management (ZENITH), Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Poznan University of Technology (PUT), Institut National de la Recherche Agronomique (INRA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Inria Sophia Antipolis - Méditerranée (CRISAM), and Poznan University of Technology
Subjects: Computer Networks and Communications, Computer science, 02 engineering and technology, computer.software_genre, Query optimization, Database design, Theoretical Computer Science, Data modeling, 020204 information systems, 0502 economics and business, 0202 electrical engineering, electronic engineering, information engineering, Information system, [INFO]Computer Science [cs], ComputingMilieux_MISCELLANEOUS, Database model, Data administration, Information retrieval, Database, 05 social sciences, Materialized view, Business process modeling, Data structure, Data science, Hardware and Architecture, 020201 artificial intelligence & image processing, 050211 marketing, Database theory, Semi-structured data, computer, Software, Information Systems, Data integration
Abstract: This volume is the second one of the 16th East-European Conference on Advances in Databases and Information Systems (ADBIS 2012), held on September 18-21, 2012, in Pozna, Poland. The first one has been published in the LNCS series. This volume includes 27 research contributions, selected out of 90. The contributions cover a wide spectrum of topics in the database and information systems field, including: database foundation and theory, data modeling and database design, business process modeling, query optimization in relational and object databases, materialized view selection algorithms, index data structures, distributed systems, system and data integration, semi-structured data and databases, semantic data management, information retrieval, data mining techniques, data stream processing, trust and reputation in the Internet, and social networks. Thus, the content of this volume covers the research areas from fundamentals of databases, through still hot topic research problems (e.g., data mining, XML data processing), to novel research areas (e.g., social networks, trust and reputation, and data stream processing). The editors of this volume believe that its content will inspire the researchers with new ideas for future development. It may also serve as an overview of the ongoing work in the field of databases and information systems.
Published: 2017
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32. Small RNA fragments derived from multiple RNA classes – the missing element of multi-omics characteristics of the hepatitis C virus cell culture model

Author: Agnieszka Zmienko, Anna Hojka-Osinska, Agata Budkowska, Marek Figlerowicz, Anna Philips, Paulina Jackowiak, Lucyna Budzko, Patrick Maillard, Institute of Bioorganic Chemistry [Poznań], Polska Akademia Nauk = Polish Academy of Sciences (PAN), Institute of Computing Science [Poznan], Poznan University of Technology (PUT), Hépacivirus et Immunité innée, Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), This study was financed by the National Science Centre grant awarded on the basis of a decision number DEC-2012/05/D/NZ2/02238, to PJ, and by the Polish Ministry of Science and Higher Education grant IP2012 014972, to PJ. Partial financial support was also provided by the European Union within the European Regional Development Fund through the MPD program and by the Polish Ministry of Science and Higher Education, under the KNOW program., We thank T. Wakita for providing us (Institut Pasteur, Paris, France) with JFH-1 infectious clone and C. Rice for Huh-7.5 cells. We are indebted to the Plateforme D’Imagerie Dynamique (PFID) of the Institut Pasteur 'Imagopole' for microscopy assistance. The RNA-Seq analysis was performed using the facilities of European Centre of Bioinformatics and Genomics (Poznan, Poland)., and Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0301 basic medicine, Small RNA, RNA, Untranslated, genetic structures, lcsh:QH426-470, Hepatitis C virus, [SDV]Life Sciences [q-bio], lcsh:Biotechnology, Gene Dosage, Hepacivirus, Biology, medicine.disease_cause, Cell Line, Transcriptome, RNA fragments, 03 medical and health sciences, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], lcsh:TP248.13-248.65, microRNA, Genetics, medicine, Humans, tRF, Nucleic acid structure, skin and connective tissue diseases, Non-coding RNA, High-Throughput Nucleotide Sequencing, RNA, Genomics, 3. Good health, RNA silencing, lcsh:Genetics, 030104 developmental biology, HCV, RNA, Viral, Research Article, Biotechnology
Abstract: Background A pool of small RNA fragments (RFs) derived from diverse cellular RNAs has recently emerged as a rich source of functionally relevant molecules. Although their formation and accumulation has been connected to various stress conditions, the knowledge on RFs produced upon viral infections is very limited. Here, we applied the next generation sequencing (NGS) to characterize RFs generated in the hepatitis C virus (HCV) cell culture model (HCV-permissive Huh-7.5 cell line). Results We found that both infected and non-infected cells contained a wide spectrum of RFs derived from virtually all RNA classes. A significant fraction of identified RFs accumulated to similar levels as miRNAs. Our analysis, focused on RFs originating from constitutively expressed non-coding RNAs, revealed three major patterns of parental RNA cleavage. We found that HCV infection induced significant changes in the accumulation of low copy number RFs, while subtly altered the levels of high copy number ones. Finally, the candidate RFs potentially relevant for host-virus interactions were identified. Conclusions Our results indicate that RFs should be considered an important component of the Huh-7.5 transcriptome and suggest that the main factors influencing the RF biogenesis are the RNA structure and RNA protection by interacting proteins. The data presented here significantly complement the existing transcriptomic, miRnomic, proteomic and metabolomic characteristics of the HCV cell culture model. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3891-3) contains supplementary material, which is available to authorized users.
Published: 2017
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33. Electrochemical capacitors operating in aqueous electrolyte with volumetric characteristics improved by sustainable templating of electrode materials

Author: Krzysztof Fic, Anetta Platek, Camelia Matei Ghimbeu, Cristina Nita, Elżbieta Frąckowiak, Poznan University of Technology, Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Poznan University of Technology (PUT), Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Institute of Chemistry and Technical Electrochemistry, Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), and Ghimbeu, Camelia
Subjects: [CHIM.INOR] Chemical Sciences/Inorganic chemistry, Materials science, General Chemical Engineering, 02 engineering and technology, Electrolyte, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, 010402 general chemistry, Electrochemistry, 7. Clean energy, 01 natural sciences, Specific surface area, [CHIM] Chemical Sciences, Specific energy, [CHIM]Chemical Sciences, chemistry.chemical_classification, Polymer, Microporous material, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Chemical engineering, Electrode, 0210 nano-technology, Mesoporous material
Abstract: International audience; Soft-and salt-templating methods have been combined to obtain highly microporous carbon materials with mesopores in the narrow pore size range. Phenolic resin was used as a carbon source, and rubidium and caesium chloride were used as salt-templates, giving a well-developed microporosity with a high specific surface area, whereas a sacrificial triblock polymer Pluronic F-127 (soft-template) induced the mesopores of essential importance for fast access of the electrode surface area for the electrolytic solution. The combination of a high specific surface area (up to 2556 m 2 g À1) with a suitable pore size (0.77 e0.88 nm) resulted in an excellent performance of the electrochemical capacitor. High specific energies of 16.7 Wh•kg À1 at 300 W kg À1 of specific power have been achieved for a CsCl-T-based high-voltage (1.5 V) device with a 0.5 mol,L À1 Li 2 SO 4 electrolytic solution. The improved rate handling was allowed to maintain 10 Wh,kg À1 of specific energy at 4 kW kg À1 of specific power. In contrast to the other carbons with well-developed porosities, the material density obtained allowed our device to reach competitive, remarkably higher volumetric characteristics.
Published: 2020
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34. MALTESQUE 2019 Workshop Summary

Author: Xavier Devroey, Maxime Cordy, Francesca Arcelli Fontana, Fabio Palomba, Bartosz Walter, Apostolos Ampatzoglou, Gilles Perrouin, Mathieu Archer, Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), Université de Namur [Namur] (UNamur), University of Groningen [Groningen], Diversity-centric Software Engineering (DiverSe), Inria Rennes – Bretagne Atlantique, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-LANGAGE ET GÉNIE LOGICIEL (IRISA-D4), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Bretagne Sud (UBS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National de Recherche en Informatique et en Automatique (Inria)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-CentraleSupélec-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Bretagne Sud (UBS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Poznan University of Technology (PUT), Université du Luxembourg (Uni.lu), Universität Zürich [Zürich] = University of Zurich (UZH), Delft University of Technology (TU Delft), Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique)
Subjects: Engineering, business.industry, 020207 software engineering, 02 engineering and technology, General Medicine, [INFO.INFO-SE]Computer Science [cs]/Software Engineering [cs.SE], Software quality, [INFO.INFO-CL]Computer Science [cs]/Computation and Language [cs.CL], [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], Work (electrical), Software testing, 020204 information systems, 0202 electrical engineering, electronic engineering, information engineering, business, Software engineering
Abstract: International audience; Welcome to the third edition of the workshop on Machine Learning Techniques for Software Quality Evaluation (MaLTeSQuE 2019), held in Tallinn, Estonia, August 27th, 2019, co-located with ESEC / FSE 2019. This year MALTESQUE merged with the MASES (Machine Learning and Software Engineering in Symbiosis) workshop, co-located with the ASE 2018 conference. Ten papers from all over the world were submitted, seven of them were accepted. The program also featured a keynote by Lionel Briand on the use of machine learning to improve software testing.
Published: 2020
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35. MEDES '20: 12th International Conference on Management of Digital EcoSystems

Author: Chbeir, Richard, Manolopoulos, Yannis, Damiani, Ernesto, Benslimane, Djamal, Bellatreche, Ladjel, Morzy, Tadeusz, Laboratoire Informatique de l'Université de Pau et des Pays de l'Adour (LIUPPA), Université de Pau et des Pays de l'Adour (UPPA), Open University of Cyprus, Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), Service Oriented Computing (SOC), Laboratoire d'InfoRmatique en Image et Systèmes d'information (LIRIS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-École Centrale de Lyon (ECL), Université de Lyon-Université Lumière - Lyon 2 (UL2)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Université Lumière - Lyon 2 (UL2), Laboratoire d'Informatique et d'Automatique pour les Systèmes (LIAS), Université de Poitiers-ENSMA, and Poznan University of Technology (PUT)
Subjects: [INFO]Computer Science [cs], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2020
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36. Battle of Postdisaster Response and Restoration

Author: Jorge Pérez, Alejandra Posada, Yuan Huang, Mario Castro-Gama, Michele Romano, Sergio Muñoz, P. Cuero, Przemysław Zakrzewski, Giovanni Francesco Santonastaso, Juliana Robles, Kevin Woodward, D. Páez, Raziyeh Farmani, Guangtao Fu, Denis Gilbert, David Butler, Juan Saldarriaga, Olivier Piller, Yves Filion, Eirini Nikoloudi, Camilo Salcedo, Fanlin Meng, Jochen Deuerlein, Dragan Savic, Cai Jian, Rafał Brodziak, Herman A. Mahmoud, Attila Bibok, Zoran Kapelan, Sebastián González, Claudia Quintiliani, Enrico Creaco, Yuanzhe Li, Shiyuan Hu, Bogumil Ulanicki, Joong Hoon Kim, Stefano Galelli, Armando Di Nardo, Simone Santopietro, Andrés Aguilar, Kevin Vargas, Chenhao Ou, Edo Abraham, Sophocles Sophocleous, Jinliang Gao, Michele Di Natale, Pedro L. Iglesias-Rey, Marco Franchini, Kegong Diao, Thomas M. Walski, Feifei Zheng, Chris Sweetapple, Jędrzej Bylka, Qingzhou Zhang, Alicja Bałut, Queen's University [Kingston, Canada], KWR, University of Cassino and Southern Lazio [Cassino], University of Exeter, University of Regina, University of Leicester, Ontoprise GmbH [Karlsruhe], Environnement, territoires et infrastructures (UR ETBX), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Delft University of Technology (TU Delft), Poznan University of Technology (PUT), Harbin Institute of Technology (HIT), University of Duhok, University of Pavia, Budapest University of Technology and Economics [Budapest] (BME), Universidad de los Andes [Bogota] (UNIANDES), University of Groningen [Groningen], Università degli Studi di Ferrara (UniFE), Singapore Institute of Technology [Singapore] (SIT), Korea National Open University [Seoul], Universitat Politècnica de València (UPV), BENTLEY SYSTEMS NANTICOKE USA, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Paez, D., Filion, Y., Castro-Gama, M., Quintiliani, C., Santopietro, S., Sweetapple, C., Meng, F., Farmani, R., Fu, G., Butler, D., Zhang, Q., Zheng, F., Diao, K., Ulanicki, B., Huang, Y., Deuerlein, J., Gilbert, D., Abraham, E., Piller, O., Balut, A., Brodziak, R., Bylka, J., Zakrzewski, P., Li, Y., Gao, J., Jian, C., Ou, C., Hu, S., Sophocleous, S., Nikoloudi, E., Mahmoud, H., Woodward, K., Romano, M., Santonastaso, G. F., Creaco, E., Di Nardo, A., Di Natale, M., Bibok, A., Salcedo, C., Aguilar, A., Cuero, P., Gonzalez, S., Munoz, S., Perez, J., Posada, A., Robles, J., Vargas, K., Franchini, M., Galelli, S., Kim, J. H., Iglesias-Rey, P., Kapelan, Z., Saldarriaga, J., Savic, D., and Walski, T.
Subjects: Battle, History, Design, 010504 meteorology & atmospheric sciences, media_common.quotation_subject, Geography, Planning and Development, 0207 environmental engineering, 02 engineering and technology, Management, Monitoring, Policy and Law, 01 natural sciences, Distribution system, [SPI]Engineering Sciences [physics], [SPI.GCIV.IT]Engineering Sciences [physics]/Civil Engineering/Infrastructures de transport, Aeronautics, Water storage, [SPI.GCIV.RISQ]Engineering Sciences [physics]/Civil Engineering/Risques, Session (computer science), 020701 environmental engineering, Ecological restoration, 0105 earth and related environmental sciences, Water Science and Technology, Civil and Structural Engineering, media_common, Pipelines, System analysis, Water supply systems, MECANICA DE FLUIDOS, Water, [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO], Emergency management, 6. Clean water, International waters, 13. Climate action, Networks, Algorithms, Pipe failures
Abstract: International audience; The paper presents the results of the Battle of Postdisaster Response and Restoration (BPDRR) presented in a special session at the first International water distribution systems analysis & computing and control in the water industry (WDSA/CCWI) Joint Conference, held in Kingston, Ontario, Canada, in July 2018. The BPDRR problem focused on how to respond and restore water service after the occurrence of five earthquake scenarios that cause structural damage in a water distribution system. Participants were required to propose a prioritization schedule to fix the damages of each scenario while following restrictions on visibility/nonvisibility of damages. Each team/approach was evaluated against six performance criteria: (1)time without supply for hospital/firefighting, (2)rapidity of recovery, (3)resilience loss, (4)average time of no user service, (5)number of users without service for eight consecutive hours, and (6)water loss. Three main types of approaches were identified from the submissions: (1)general-purpose metaheuristic algorithms, (2)greedy algorithms, and (3)ranking-based prioritizations. All three approaches showed potential to solve the challenge efficiently. The results of the participants showed that for this network, the impact of a large-diameter pipe failure on the network is more significant than several smaller pipes failures. The location of isolation valves and the size of hydraulic segments influenced the resilience of the system during emergencies. On average, the interruptions to water supply (hospitals and firefighting) varied considerably among solutions and emergency scenarios, highlighting the importance of private water storage for emergencies. The effects of damages and repair work were more noticeable during the peak demand periods (morning and noontime) than during the low-flow periods; and tank storage helped to preserve functionality of the network in the first few hours after a simulated event.
Published: 2020
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37. The Concept of Contradiction Finding and Classification in the Field of Marketing Communication Quality Management

Author: Arkadiusz Kalemba, Gerhard-Wilhelm Weber, Agnieszka Chuda, Joanna Majchrzak, Poznan University of Technology (PUT), Middle East Technical University [Ankara] (METU), Rachid Benmoussa, Roland De Guio, Sébastien Dubois, Sebastian Koziołek, and TC 5
Subjects: Quality management, Computer science, media_common.quotation_subject, 0211 other engineering and technologies, Marketing communication, Grey relations, 02 engineering and technology, law.invention, law, 0502 economics and business, Systematic thinking, Contradiction, TRIZ, Uncertain systems, Systems thinking, [INFO]Computer Science [cs], Systemic approach, Qualitology, Valuation (finance), media_common, Marketing, 021103 operations research, Management science, Contradiction modeling, 05 social sciences, Inventive problem solving, 050203 business & management
Abstract: Part 6: TRIZ Applications in Specific Disciplinary Fields; International audience; This article presents new concept of a systematic approach to quality management of marketing communication. The major research objective was to develop a method which facilitates efficient quality management of marketing communication in a holistic manner. The elements of marketing communication are defined, and the subsystem of marketing information is distinguished. A qualitative model of marketing communication was developed referring to the basics of Qualitology and the principles of qualitative modeling, valuation and systemic approach. Using the ENV and OTSM model of TRIZ contradiction, the problem of qualitative contradictions in the marketing communication system was indicated. Grey Incidence Analysis and Theory of Correlation and Regression are used to identify the structure of marketing communication and to find contradictions within its structure. The inventive principles for solving contradictions in the field of marketing are indicated. The innovative aspect of the research consists of an application of qualitative modeling, methods of Grey System Theory and Theory of Correlation and Regression, and methods of Theory of Inventive Problem Solving. The method introduced enables the recognition and classification of contradictions on its impact for marketing communication quality. In the last section, the direction for further research in the field of systematic thinking application for marketing communication quality management is indicated.
Published: 2019
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38. Extreme biomimetics: Preservation of molecular detail in centimeter-scale samples of biological meshes laid down by sponges

Author: Friedrich Roth, Olga V. Petrova, Michael Kraft, David Rafaja, Heike Meissner, Teofil Jesioniowski, Marcin Wysokowski, Elke Niederschlag, Olena Volkova, Kurt Kummer, Roberta Galli, Martin Kopáni, Andrei Rogalev, Iaroslav Petrenko, Hermann Ehrlich, Mykhailo Motylenko, S. V. Nekipelov, Erica Brendler, Christian Schimpf, Martin Bertau, Paul Simon, Serguei L. Molodtsov, Sonia Żółtowska-Aksamitowska, Alexander V. Ereskovsky, V. N. Sivkov, Adam P. Summers, Oleg S. Pokrovsky, Yvonne Joseph, Technishe Universität Bergakademie Freiberg (TU Bergakademie Freiberg), University of Washington [Seattle], Max Planck Institute for Chemical Physics of Solids (CPfS), Max-Planck-Gesellschaft, Poznan University of Technology (PUT), European Synchrotron Radiation Facility (ESRF), Géosciences Environnement Toulouse (GET), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Tomsk State University [Tomsk], Technische Universität Dresden = Dresden University of Technology (TU Dresden), University Hospital Carl Gustav Carus [Dresden, Germany], European XFEL GmbH (XFEL), European XFEL GmbH, ITMO University [Russia], Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Saint Petersburg State University (SPBU), Komi Research Center, Ural Branch of Russian Academy of Sciences (UB RAS), Syktyvkar State University, Syktywkar State University, Comenius University in Bratislava, Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), and Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU)
Subjects: Materials science, Materials Science, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Catalysis, Biomimetics, Graphite, Nanoscopic scale, Research Articles, Multidisciplinary, biology, Spongin, Tissue Scaffolds, [SDV.BBM.BS]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Structural Biology [q-bio.BM], Nanoporous, Spectrum Analysis, SciAdv r-articles, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, biology.organism_classification, Nanoscale Process, Carbon, 0104 chemical sciences, [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biophysics, Sponge, Collagen, 0210 nano-technology, Hybrid material, Copper, Research Article
Abstract: We report a strategy for preserving the structural features of collagen triple helix in turbostratic graphite., Fabrication of biomimetic materials and scaffolds is usually a micro- or even nanoscale process; however, most testing and all manufacturing require larger-scale synthesis of nanoscale features. Here, we propose the utilization of naturally prefabricated three-dimensional (3D) spongin scaffolds that preserve molecular detail across centimeter-scale samples. The fine-scale structure of this collagenous resource is stable at temperatures of up to 1200°C and can produce up to 4 × 10–cm–large 3D microfibrous and nanoporous turbostratic graphite. Our findings highlight the fact that this turbostratic graphite is exceptional at preserving the nanostructural features typical for triple-helix collagen. The resulting carbon sponge resembles the shape and unique microarchitecture of the original spongin scaffold. Copper electroplating of the obtained composite leads to a hybrid material with excellent catalytic performance with respect to the reduction of p-nitrophenol in both freshwater and marine environments.
Published: 2019
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39. Apprentissage automatique de lois de contrôle d'écoulement par programmation génétique

Author: Cornejo Maceda, Guy Yoslan, Noack, Bernd R., Lusseyran, François, Deng, Nan, Pastur, Luc, Morzynski, Marek, Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur (LIMSI), Université Paris Saclay (COmUE)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université - UFR d'Ingénierie (UFR 919), Sorbonne Université (SU)-Sorbonne Université (SU)-Université Paris-Saclay-Université Paris-Sud - Paris 11 (UP11), and Poznan University of Technology (PUT)
Subjects: [PHYS]Physics [physics], pinball fluidique, intelligence artificielle, apprentissage automatique, réduction de traînée, [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], programmation génétique, contrôle
Abstract: Ce travail vise à la mise en place de stratégies de contrôle en boucle fermée par apprentissage automatique (Machine Learning, ML) pour les écoulements fluides. Notre outil de contrôle, fondé sur la programmation génétique, est testé sur une configuration d’écoulement simple mais qui réunit les caractéristiques essentielles des écoulements en situation réelle, le "pinball fluidique". La richesse dynamique et la possibilité d’un contrôle multi-entrée, multi-sortie justifie le choix du pinball fluidique comme objet d’étude. Notre contribution réside dans l’accélération de l’apprentissage grâce à une meilleure exploration de l’espace de recherche, notamment en éliminant les lois de contrôles redondantes. La programmation génétique a permis de construire une loi de contrôle non intuitive, combinant deux mécanismes d’action issus de la littérature et avec une meilleure performance, en terme d’objectif de contrôle, que celles atteintes par les études précédentes.
Published: 2019

40. Reduced-order modeling of the fluidic pinball

Author: Luc Pastur, Bernd R. Noack, Nan Deng, Marek Morzyński, Institut des Sciences de la mécanique et Applications industrielles (IMSIA - UMR 9219), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Laboratoire Interdisciplinaire des Sciences du Numérique (LISN), CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Poznan University of Technology (PUT), Harbin Institute of Technology (HIT), Institut für Strömungsmechanik und Technische Akustik, Technische Universität Berlin (TU), Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur (LIMSI), Université Paris Saclay (COmUE)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université - UFR d'Ingénierie (UFR 919), Sorbonne Université (SU)-Sorbonne Université (SU)-Université Paris-Saclay-Université Paris-Sud - Paris 11 (UP11), Chaos, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-EDF R&D (EDF R&D), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Technical University of Berlin / Technische Universität Berlin (TU), and Publications, Limsi
Subjects: [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn], fluid mechanics, FOS: Physical sciences, 02 engineering and technology, Wake, Equilateral triangle, 01 natural sciences, fluidic pinball, 010305 fluids & plasmas, [PHYS] Physics [physics], Physics::Fluid Dynamics, symbols.namesake, 0203 mechanical engineering, 0103 physical sciences, Mean flow, [PHYS.MECA.MEFL] Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], [NLIN]Nonlinear Sciences [physics], [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], Physics, Hopf bifurcation, [PHYS]Physics [physics], Fluid Dynamics (physics.flu-dyn), transition to chaos, Reynolds number, Mechanics, Physics - Fluid Dynamics, Vortex shedding, flow control, reduced-order modeling, 020303 mechanical engineering & transports, Flow (mathematics), symbols, Axial symmetry
Abstract: International audience; The fluidic pinball is a geometrically simple flow configuration with three rotating cylinders on the vertex of an equilateral triangle. Yet, it remains physically rich enough to host a range of interacting frequencies and to allow testing of control laws within minutes on a laptop. The system has multiple inputs (the three cylinders can independently rotate around their axis) and multiple outputs (downstream velocity sensors). Investigating the natural flow dynamics, we found that the first unsteady transition undergone by the wake flow, when increasing the Reynolds number, is a Hopf bifurcation leading to the usual time-periodic vortex shedding phenomenon, typical of cylinder wake flows, in which the mean flow field preserves axial symmetry. We extract dynamically consistent modes from the flow data in order to built a reduced-order model (ROM) of this flow regime. We show that the main dynamical features of the primary Hopf bifurcation can be described by a non-trivial lowest-order model made of three degrees of freedom.
Published: 2019
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41. Dynamiques transitoires du sillage en pinball fluidique

Author: Nan, Deng, Luc, Pastur, Noack, Bernd, Guy, Cornejo-Maceda, François, Lusseyran, Jean-Christophe, Loiseau, Marek, Morzyński, Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur (LIMSI), Université Paris Saclay (COmUE)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université - UFR d'Ingénierie (UFR 919), Sorbonne Université (SU)-Sorbonne Université (SU)-Université Paris-Saclay-Université Paris-Sud - Paris 11 (UP11), Arts et Métiers ParisTech, and Poznan University of Technology (PUT)
Subjects: [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]
Abstract: International audience; Nous nous intéressonsà la dynamique transitoire d'une configuration fluide formée de trois cylindres fixes distribués sur un triangleéquilatéral enécoulement transverse (pinball fluidique), pour différentes valeurs du nombre de Reynolds sur la route vers le chaos. Nousétudions plus particulièrement l'action des degrés de liberté elémentaires du système dynamique sous-jacent sur les coefficients de trainée et de portance de l'écoulement fluide. Abstract. In this work, we are interested in the transient dynamics of a fluid configuration consisting of three fixed cylinders whose axes distribute over an equilateral triangle in transverse flow (fluidic pinball). As the Reynolds number is increased on the route to chaos, its transient dynamics tell us about the contribution of the elementary degrees of freedom of the system to the lift and drag coefficients.
Published: 2019

42. Biomimetic Approach to Compliance Optimization and Multiple Load Cases

Author: Antoni Żochowski, Michał Nowak, Jan Sokołowski, Poznan University of Technology (PUT), Institut Élie Cartan de Lorraine (IECL), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Systems Research Institute [Warsaw] (IBS PAN), Polska Akademia Nauk = Polish Academy of Sciences (PAN), and Federal University of Paraíba (UFPB)
Subjects: Mathematical optimization, 021103 operations research, Control and Optimization, Applied Mathematics, Biomimetic structural optimization, Topology optimization, 0211 other engineering and technologies, Multiple loads, Parameterized complexity, Strain energy density function, 010103 numerical & computational mathematics, 02 engineering and technology, Management Science and Operations Research, Elasticity (physics), 01 natural sciences, Finite element method, Mathematics Subject Classification : 35C20·35J15·35S05·49J40·49Q12, Shape derivative, Convergence (routing), Theory of computation, Shape optimization, [MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC], 0101 mathematics, Mathematics
Abstract: International audience; The variational approach to shape optimization in linearized elasticity is used in order to improve convergence of a known heuristic algorithm. The speed method of shape optimization is applied to obtain necessary optimality conditions for representative test examples. The algorithm originates from the biomimetic approach to compliance optimization. The trabecular bone adapts its form to mechanical loads and is able to form structures that are lightweight and very stiff at the same time. In this sense, it is a problem pertaining to both the nature or living entities which is similar to structural optimization, especially topology optimization. The paper presents the biomimetic approach, based on the trabecular bone remodeling phenomenon, with the aim of minimizing the compliance in multiple load cases. The method employed aims at minimizing the energy and combines structural evolution inspired by trabecular bone remodeling and the shape gradient framework, with strict analysis based on functionals in the 3-dimensional elasticity model. The method is enhanced to handle the problem of structural optimization under multiple loads. The new biomimetic approach does not require volume constraints. Instead of imposing volume constraints, shapes are parameterized by the assumed strain energy density on the structural surface. The stiffest design is obtained by adding or removing material on the structural surface in virtual space. Structural evolution is based on shape gradient approximation by the speed method, and it is separated from the finite element method of the model solution. Numerical examples confirm that the heuristic algorithm for structural optimization is efficient.
Published: 2019
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43. Perforation Tests of Aluminum Alloy Specimens for a Wide Range of Temperatures Using High-Performance Thermal Chamber - Experimental and Numerical Analysis

Author: Jia, B., Pesci, R., Bernier, R., BAHI, Slim, Wood, P., Bendarma, A., Jankowiak, T., Rusinek, A., Lodygowski, T., Klosak, M., International University of Agadir (Universiapolis), Poznan University of Technology (PUT), Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), and University of Derby [United Kingdom]
Subjects: Range (particle radiation), Materials science, Numerical analysis, Alloy, Perforation (oil well), chemistry.chemical_element, [PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph], 02 engineering and technology, engineering.material, 021001 nanoscience & nanotechnology, [SPI]Engineering Sciences [physics], 020303 mechanical engineering & transports, 0203 mechanical engineering, chemistry, Aluminium, Thermal, engineering, Composite material, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2019
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44. Dynamiques transitoires de sillage dans le pinball fluidique

Author: Deng, Nan, Pastur, Luc, Noack, Bernd, Cornejo-Maceda, Guy, Lusseyran, François, Loiseau, Jean-Christophe, Morzyński, Marek, Institut des Sciences de la mécanique et Applications industrielles (IMSIA - UMR 9219), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Laboratoire Interdisciplinaire des Sciences du Numérique (LISN), CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Harbin Institute of Technology (HIT), Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur (LIMSI), Université Paris Saclay (COmUE)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université - UFR d'Ingénierie (UFR 919), Sorbonne Université (SU)-Sorbonne Université (SU)-Université Paris-Saclay-Université Paris-Sud - Paris 11 (UP11), Laboratoire de Dynamique des Fluides (DynFluid), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Poznan University of Technology (PUT), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-EDF R&D (EDF R&D), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Sorbonne Université - UFR d'Ingénierie (UFR 919), Sorbonne Université (SU)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Saclay (COmUE), Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Arts et Métiers Sciences et Technologies, and HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)
Subjects: [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn], [NLIN]Nonlinear Sciences [physics], [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph]
Abstract: International audience; Nous nous intéressonsà la dynamique transitoire d'une configuration fluide formée de trois cylindres fixes distribués sur un triangleéquilatéral enécoulement transverse (pinball fluidique), pour différentes valeurs du nombre de Reynolds sur la route vers le chaos. Nousétudions plus particulièrement l'action des degrés de liberté elémentaires du système dynamique sous-jacent sur les coefficients de trainée et de portance de l'écoulement fluide.
Published: 2019

45. Development of an experimental set-up for dynamic force measurements during impact and perforation, coupling to numerical simulations

Author: Richard Bernier, Alexis Rusinek, W. Z. Zhong, Guy Sutter, I. A. Mbarek, Tomasz Jankowiak, Laboratoire de mécanique Biomécanique Polymère Structures (LaBPS), Université de Lorraine (UL), Poznan University of Technology (PUT), Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), and Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Arts et Métiers Sciences et Technologies
Subjects: Sheet steel, Materials science, Piezoelectric sensor, Perforation (oil well), Aerospace Engineering, Ocean Engineering, Numerical simulation, 02 engineering and technology, law.invention, [SPI]Engineering Sciences [physics], Resistance force, 0203 mechanical engineering, law, Light-gas gun, Safety, Risk, Reliability and Quality, Civil and Structural Engineering, Dynamic failure, Tension (physics), business.industry, Mechanical Engineering, [CHIM.MATE]Chemical Sciences/Material chemistry, Split-Hopkinson pressure bar, Structural engineering, 021001 nanoscience & nanotechnology, Ballistic impact, 020303 mechanical engineering & transports, Mechanics of Materials, Automotive Engineering, Force dynamics, 0210 nano-technology, business
Abstract: International audience; Quasi-static tension and dynamic compression experiments on S235JR mild steel were performed using a screw-driven machine and a split Hopkinson pressure bar (SHPB) device. A wide range of strain rates from 10(-4) to 2500 s(-1) has been covered during experiments. The Johnson-Cook constitutive relation was adopted to describe the material visco-plastic behaviour. Ballistic impact experiments on S235JR plates with conical-nose shaped projectile were carried out using pneumatic gas gun having different impact velocities varying from 49 to 181 m/s. A new experimental set-up allowing resistance force measurement during impact and perforation was developed. Different impact velocities and thicknesses were evaluated during ballistic experiments. All the projectiles are 12.8 mm in diameter and 28g in weight. The ballistic impact device is equipped with laser sensors for velocities measurements and piezoelectric sensors for dynamic force measurement. Based on numerical and experimental investigations, the ballistic properties and failure modes of the material have been studied. The finite element code ABAQUS/Explicit was used to simulate the perforation process but also to have a better understanding of the measurement. A good agreement between experiments and numerical results has been observed in terms of ballistic curves, failure patterns, resistance force as well as the energy balane.
Published: 2016
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46. Dynamic Behavior of Aluminum Alloy Aw 5005 Undergoing Interfacial Friction and Specimen Configuration in Split Hopkinson Pressure Bar System at High Strain Rates and Temperatures

Author: Alexis Rusinek, Amine Bendarma, Bin Jia, María Henar Miguélez, Tomasz Lodygowski, Maciej Klósak, Tomasz Jankowiak, International University of Agadir (Universiapolis), Poznan University of Technology (PUT), Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Universidad Carlos III de Madrid [Madrid] (UC3M), Laboratoire de Conception Fabrication Commande (LCFC), Arts et Métiers Sciences et Technologies, and HESAM Université (HESAM)-HESAM Université (HESAM)-Université de Lorraine (UL)
Subjects: Materials science, Alloy, chemistry.chemical_element, 02 engineering and technology, engineering.material, lcsh:Technology, Article, Cylinder (engine), law.invention, [SPI]Engineering Sciences [physics], 0203 mechanical engineering, Aluminium, law, General Materials Science, Dynamical friction, Composite material, specimen configuration, lcsh:Microscopy, lcsh:QC120-168.85, experiment, lcsh:QH201-278.5, Computer simulation, lcsh:T, Split-Hopkinson pressure bar, 021001 nanoscience & nanotechnology, Compression (physics), Finite element method, 020303 mechanical engineering & transports, chemistry, lcsh:TA1-2040, numerical simulation, dynamic friction, engineering, lcsh:Descriptive and experimental mechanics, lcsh:Electrical engineering. Electronics. Nuclear engineering, aluminum alloy, split Hopkinson pressure bar, lcsh:Engineering (General). Civil engineering (General), 0210 nano-technology, lcsh:TK1-9971
Abstract: In this paper, experimental and numerical results of an aluminum alloy&rsquo, s mechanical behavior are discussed. Over a wide range of strain rates (10&minus, 4 s&minus, 1 &le, έ &le, 103 s&minus, 1) the influence of the loading impact, velocity and temperature on the dynamic response of the material was analyzed. The interface friction effect on the material&rsquo, s dynamic response is examined using a split Hopkinson pressure bar (SHPB) in a high temperature experiment using finite element analysis (FEA). The effect of different friction conditions between the specimen and the transmitted/incident bars in the SHPB system was examined using cylinder bulk specimens and cylinder plates defined with four-layer configurations. The results of these tests alongside the presented numerical simulations allow a better understanding of the phenomenon and reduces (minimizes) errors during compression tests at high and low strain rates with temperatures ranging from 21 to 300 &deg, C.
Published: 2020
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47. Modeling and Design of SHPB to Characterize Brittle Materials under Compression for High Strain Rates

Author: Alexis Rusinek, George Z. Voyiadjis, Tomasz Jankowiak, Poznan University of Technology (PUT), Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Universidad Carlos III de Madrid [Madrid] (UC3M), Louisiana State University (LSU), and Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL)-Arts et Métiers Sciences et Technologies
Subjects: Materials science, 02 engineering and technology, Split Hopkinson Pressure Bars (SPHB), lcsh:Technology, Article, brittle materials, [SPI]Engineering Sciences [physics], Brittleness, 0203 mechanical engineering, General Materials Science, lcsh:Microscopy, dynamic compression, lcsh:QC120-168.85, lcsh:QH201-278.5, Computer simulation, lcsh:T, business.industry, Split-Hopkinson pressure bar, Structural engineering, Strain rate, simulation, 021001 nanoscience & nanotechnology, Compression (physics), Strength of materials, 020303 mechanical engineering & transports, Compressive strength, lcsh:TA1-2040, concrete, lcsh:Descriptive and experimental mechanics, Dynamic range compression, lcsh:Electrical engineering. Electronics. Nuclear engineering, lcsh:Engineering (General). Civil engineering (General), 0210 nano-technology, business, lcsh:TK1-9971
Abstract: International audience; This paper presents an analytical prediction coupled with numerical simulations of a split Hopkinson pressure bar (SHPB) that could be used during further experiments to measure the dynamic compression strength of concrete. The current study combines experimental, modeling and numerical results, permitting an inverse method by which to validate measurements. An analytical prediction is conducted to determine the waves propagation present in SHPB using a one-dimensional theory and assuming a strain rate dependence of the material strength. This method can be used by designers of new SPHB experimental setups to predict compressive strength or strain rates reached during tests, or to check the consistencies of predicted results. Numerical simulation results obtained using LS-DYNA finite element software are also presented in this paper, and are used to compare the predictions with the analytical results. This work focuses on an SPHB setup that can accurately identify the strain rate sensitivities of concrete or brittle materials.
Published: 2020
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48. Un algorithme de plus courts chemins pour le problème de flot de coût minimum dans un graphe dynamique

Author: Vernet, Mathilde, Drozdowski, Maciej, Pigné, Yoann, Sanlaville, Eric, Vernet, Mathilde, Equipe Réseaux d'interactions et Intelligence Collective (RI2C - LITIS), Laboratoire d'Informatique, de Traitement de l'Information et des Systèmes (LITIS), Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Normandie Université (NU), Institute of Computing Science [Poznan], and Poznan University of Technology (PUT)
Subjects: [INFO.INFO-RO] Computer Science [cs]/Operations Research [cs.RO], graphes dynamiques, algorithme SSP, flot de coût minimum, [INFO]Computer Science [cs], [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO], [INFO] Computer Science [cs], ComputingMilieux_MISCELLANEOUS
Abstract: National audience
Published: 2019

49. Artificial intelligence control applied to drag reduction of the fluidic pinball

Author: François Lusseyran, Bernd R. Noack, Guy Y. Cornejo Maceda, Luc Pastur, Nan Deng, Marek Morzyński, Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur (LIMSI), Université Paris Saclay (COmUE)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université - UFR d'Ingénierie (UFR 919), Sorbonne Université (SU)-Sorbonne Université (SU)-Université Paris-Saclay-Université Paris-Sud - Paris 11 (UP11), Institut des Sciences de la mécanique et Applications industrielles (IMSIA - UMR 9219), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Poznan University of Technology (PUT), Publications, Limsi, Université Paris-Sud - Paris 11 (UP11)-Sorbonne Université - UFR d'Ingénierie (UFR 919), Sorbonne Université (SU)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Saclay (COmUE), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-EDF R&D (EDF R&D)
Subjects: Airfoil, Computer science, Genetic programming, 02 engineering and technology, 01 natural sciences, fluidic pinball, 010305 fluids & plasmas, [PHYS] Physics [physics], [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph], Reduction (complexity), 0203 mechanical engineering, Parasitic drag, artificial intelligence control, 0103 physical sciences, [INFO.INFO-SY]Computer Science [cs]/Systems and Control [cs.SY], [PHYS.MECA.MEFL] Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], [PHYS]Physics [physics], [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Mechanics of the fluids [physics.class-ph], business.industry, Phasor, Lift (force), Flow control (fluid), 020303 mechanical engineering & transports, machine learning, 13. Climate action, Drag, genetic programming, Artificial intelligence, business, control
Abstract: International audience; Flow control is at the core of many engineering applications, such as drag reduction for land-, sea- and air-borne tranportation, lift increase of airfoils, mixing enhancement of chemical reactions and efficiency increase for wind turbines and marine current power, just to name a few examples. In particular, feedback turbulence control is a key enabler for those technologies (Brunton & Noack, 2015 Appl. Mech. Rev. 67, 050801).The challenges in control design are the associated high-dimensional dynamics, significant time-delays from actuation to sensing, strong nonlinearities and frequency crosstalk, making modeling and linear control theory often impractical.To address these challenges, a model-free, self-learning control strategy is developed building on corresponding experimental studies of the authors.The control design is formulated as a regression problem and solved with powerful methods of machine learning / artificial intelligence .Our machine learning control (MLC, Duriez et al. 2016 Springer) is based on genetic programming (GP), a biological inspired method that mimicks the Darwinian process of natural selection to learn the control law in an unsupervised way.MLC is applied to a direct numerical simulation of the fluidic pinball which is taken as a drag reduction benchmark.Here, three cylinders are centered on an equilateral triangle in a two dimensional flow.The flow is actuated by three independent cylinder rotations and monitored by 9 sensors downstream.The fluidic pinball is a simple configuration which shares nonlinear features of many reported actuated real flows such as bifurcations and frequency crosstalk.The goal is to reduce the parasitic drag power accounting for the actuation expenditure.On the methodological side, we increase the GP learning rate by a factor of 5, for instance, by parameter optimization and removing redundant control laws.On the physical side, we achieve 46% reduction of the net drag power comprising open-loop boat-tailing and closed-loop phasor control after testing only 1000 individuals. This reduction outperforms all other optimized symmetric actuations (like constant and periodic forcing). We expect significant performance improvements of MLC in future turbulence control experiments.
Published: 2019
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50. Hybrid electrochemical and biological treatment of herbicidal ionic liquids comprising the MCPA anion

Author: Łukasz Ławniczak, Florence Fourcade, Łukasz Chrzanowski, Andrzej Borkowski, Grzegorz Lota, Hermann J. Heipieper, Anna Syguda, Daria Pęziak-Kowalska, Poznan University of Technology (PUT), University of Warsaw (UW), Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ), DEC-2014/13/N/NZ9/00789, Narodowe Centrum Nauki, 35491/2016, Providence Health Care, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Anions, endocrine system, Mineralization, Health, Toxicology and Mutagenesis, 0211 other engineering and technologies, 02 engineering and technology, 010501 environmental sciences, 2-Methyl-4-chlorophenoxyacetic Acid, Electrochemistry, 01 natural sciences, MCPA, chemistry.chemical_compound, Reaction rate constant, Cations, [CHIM]Chemical Sciences, Ammonium, Alkyl, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, chemistry.chemical_classification, 021110 strategic, defence & security studies, Sewage, Chemistry, Herbicides, Public Health, Environmental and Occupational Health, General Medicine, Mineralization (soil science), Electrochemical Techniques, Biodegradation, Pollution, 6. Clean water, Ionic liquids, Biodegradation, Environmental, Electrochemical oxidation, Ionic liquid, lipids (amino acids, peptides, and proteins), Oxidation-Reduction, Nuclear chemistry
Abstract: The present study was focused on the application of an electrochemical oxidation process combined with biodegradation for the removal of novel Herbicidal Ionic Liquids (HILs) –promising protection plant products which incorporate herbicidal anions and ammonium cations. The influence of carbon chain length (n = 8, 10, 12, 14, 16, 18) in the dialkyldimethylammonium cations on electrochemical oxidation kinetics, degradation efficiency and biodegradation by activated sludge was investigated. It was established that the applied cation influenced the heterogeneous rate constant and diffusion coefficient of electrochemical oxidation. The oxidation efficiency ranged from 17% in case of HILs with C8 alkyl chain to approx. 60% in case of HILs comprising C14 and C16 alkyl chains after 3 h of electrochemical treatment. Subsequent biodegradation studies revealed that electrochemical oxidation improved the mineralization efficiency of the studied HILs. The mineralization efficiency of electrochemically-treated HILs ranged from 28% in case of HILs comprising the C8 alkyl chain to 57% in case of HILs with C14 and C16 alkyl chains after 28 days. In case of untreated HILs, the corresponding mineralization efficiency ranged from 0 to 8%, respectively. This confirms the feasibility of a hybrid electrochemical-biological approach for treatment of herbicidal ionic liquids based on MCPA.
Published: 2019
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