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1. Numerical algorithms for Spline Interpolation on Space of Probability Density Functions

Author: Ines Adouani, Chafik Samir, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes (LIMOS), and Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)
Subjects: Bézier splines, Computational Mathematics, Applied Mathematics, Fisher-Rao, [MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC], optimization, interpolation, manifolds
Abstract: International audience
Published: 2023
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2. Bézier Splines Interpolation on Stiefel and Grassmann Manifolds

Author: Samir, Chafik, Adouani, Ines, Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes (LIMOS), Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), and Université de Sousse
Subjects: [MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC], [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI]
Abstract: International audience
Published: 2023

3. An Optimization Method for Accurate Nonparametric Regressions on Stiefel Manifolds

Author: Ines Adouani, Chafik Samir, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes (LIMOS), and Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)
Subjects: [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI]
Abstract: International audience
Published: 2022
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4. Theoretical analyses of the carrier localization effect on the photoluminescence of In-rich InGaAs layer grown on InP

Author: Marwa Ben Arbia, Badreddine Smiri, Ilkay Demir, Faouzi Saidi, Ismail Altuntas, Fredj Hassen, Hassen Maaref, Eğitim Bilimleri Enstitüsü, Laboratoire de Micro-optoélectronique et Nanostructures [Monastir], Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Laboratoire de physique et chimie des nano-objets (LPCNO), 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 de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Fédération de recherche « Matière et interactions » (FeRMI), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Cumhuriyet University [Sivas, Turkey], Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), and Université de Sousse
Subjects: MOVPE, [SPI]Engineering Sciences [physics], Mechanics of Materials, Mechanical Engineering, S-shape, General Materials Science, InGaAs/InP, Condensed Matter Physics, Localized state ensemble (LSE), Photoluminescence, Carrier localization
Abstract: The free buffer InGaAs/InP structure has been elaborated by Metal Organic Vapor Phase Epitaxy (MOVPE). High indium content is chosen to reduce the bandgap energy of the ternary material with direct bandgap to be promoted for Infrared optoelectronic devices. In this work, the temperature dependent photoluminescence (TDPL) analysis of In-rich InxGa1�� xAs (x = 0.65: S1, x = 0.661: S2, and x = 0.667 S3) samples is of the central focus. The S-shaped behavior recorded at low temperature range in the III-V ternary is quantitatively studied herein by Localized State Ensemble (LSE) model. A comparison between the semi-empirical evolution of luminescence versus temperature and our numerical simulation proves the adequacy of computational details, used in LSE model, in well reproducing the S-shape feature. The numerical simulation well matched with PL spectra proving that the localization phenomenon is stronger when increasing the Indium mole fraction. The clustering effect in In-rich structure seems to be beneficial for enhancing the carrier localization within InxGa1�� xAs by localizing carriers from away extended defects that behave probably as non-radiative centers. This is indicative of the utmost importance of localization phenomenon in trapping carriers within localized states instead of dislocations and defects, owing to clustering of indium atoms.
Published: 2022
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5. Capacitance Electrochemical pH Sensor Based on Different Hafnium Dioxide (HfO2) Thicknesses

Author: Abdelhamid Errachid, Joan Bausells, Zina Fredj, Nadia Zine, Nsikak U. Benson, Mounir Ben Ali, Abdoullatif Baraket, M. Zabala, Nicole Jaffrezic-Renault, Abdelhamid Elaissari, NANOMISENE RD Laboratory [Sousse], Centre for Research on Microelectronics and Nanotechnology of Sousse | Centre de recherche en microélectronique et nanotechnologies [Sousse] (CRMN), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Micro & Nanobiotechnologies, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Instituto de Microelectrònica de Barcelona (IMB-CNM), Centro Nacional de Microelectronica [Spain] (CNM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Covenant University, Funding through the European Union's Horizon 2020 research and innovation program entitled 'An integrated POC solution for non-invasive diagnosis and therapy monitoring of Heart Failure patients, KardiaTool' under grant agreement No 768686. This work has made use of the Spanish ICTS Network MICRONANOFABS partially supported by MCIU., European Project: 768686,KardiaTool, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and European Commission
Subjects: Materials science, HfO2 thickness, Analytical chemistry, chemistry.chemical_element, ion-sensitive layer, 02 engineering and technology, Electrochemistry, 7. Clean energy, 01 natural sciences, Analytical Chemistry, lcsh:Biochemistry, chemistry.chemical_compound, Atomic layer deposition, Mott–Schottky, Mott-Schottky, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, 0103 physical sciences, lcsh:QD415-436, Physical and Theoretical Chemistry, HfO 2 thickness, Hafnium dioxide, 010302 applied physics, Thin layers, 021001 nanoscience & nanotechnology, hafnium dioxide, Dielectric spectroscopy, Membrane, electrochemical impedance spectroscopy, chemistry, pH sensors, Lithium, 0210 nano-technology, [CHIM.OTHE]Chemical Sciences/Other, Ion-sensitive layer, Electrochemical impedance spectroscopy, Layer (electronics)
Abstract: Over the past years, to achieve better sensing performance, hafnium dioxide (HfO2) has been studied as an ion-sensitive layer. In this work, thin layers of hafnium dioxide (HfO2) were used as pH-sensitive membranes and were deposited by atomic layer deposition (ALD) process onto an electrolytic-insulating-semiconductor structure Al/Si/SiO2/HfO2 for the realization of a pH sensor. The thicknesses of the layer of the HfO2 studied in this work was 15, 19.5 and 39.9 nm. HfO2 thickness was controlled by ALD during the fabrication process. The sensitivity toward H+ was clearly higher when compared to other interfering ions such as potassium K+, lithium Li+, and sodium Na+ ions. Mott&minus, Schottky and electrochemical impedance spectroscopy (EIS) analyses were used to characterise and to investigate the pH sensitivity. This was recorded by Mott&ndash, Schottky at 54.5, 51.1 and 49.2 mV/pH and by EIS at 5.86 p[H&minus, 1], 10.63 p[H&minus, 1], 12.72 p[H&minus, 1] for 15, 19.5 and 30 nm thickness of HfO2 ions sensitive layer, respectively. The developed pH sensor was highly sensitive and selective for H+ ions for the three thicknesses, 15, 19.5 and 39.9 nm, of HfO2-sensitive layer when compared to the other previously mentioned interferences. However, the pH sensor performances were better with 15 nm HfO2 thickness for the Mott&ndash, Schottky technique, whilst for EIS analyses, the pH sensors were more sensitive at 39.9 nm HfO2 thickness.
Published: 2021
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6. Optical and structural properties of In-rich InxGa1−xAs epitaxial layers on (1 0 0) InP for SWIR detectors

Author: Marwa Ben Arbia, F. Saidi, Hassen Maaref, Fredj Hassen, Demir Ilkay, Altuntas Ismail, Zied Othmen, Brahim Dkhil, Elagoz Sezai, Badreddine Smiri, Laboratoire de physique et chimie des nano-objets (LPCNO), Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-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 des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-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-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC), Laboratoire de Micro-optoélectronique et Nanostructures [Monastir], Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Cumhuriyet University [Sivas, Turkey], Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire Structures, Propriétés et Modélisation des solides (SPMS), Institut de Chimie du CNRS (INC)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: PL, Photoluminescence, Materials science, Band gap, Residual stress, chemistry.chemical_element, 02 engineering and technology, Epitaxy, 01 natural sciences, symbols.namesake, Lattice mismatch, 0103 physical sciences, Dislocation, General Materials Science, Metalorganic vapour phase epitaxy, HR-XRD, Raman, 010302 applied physics, [PHYS]Physics [physics], business.industry, Mechanical Engineering, Rich indium content, Heterojunction, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Blueshift, Carrier localization, chemistry, Mechanics of Materials, symbols, Optoelectronics, 0210 nano-technology, Raman spectroscopy, business, Indium
Abstract: International audience; In-rich InxGa1−xAs epitaxial layers were grown on InP (1 0 0) substrates by a metalorganic vapor phase epitaxy (MOVPE) technique. The effect of Indium (In) composition on the crystalline quality and optical properties are investigated. High resolution X-ray diffraction (HR-XRD) measurement and Raman scattering spectrum are used to evaluate the crystalline quality, the residual strain and dislocation density property. The number of dislocations in the epitaxial layers is found to increase by increasing the Indium content in order to release the stresses due to the epitaxial clamping. Photoluminescence (PL) measurement is used to characterize the optical properties. At 10 K, PL measurements show that the InGaAs band gap redshifts with the indium content. Moreover, the asymmetry at the low-energy side of the PL peak has been attributed to the presence of localized excitons. In all samples, a blue shift of PL peaks is evidenced by increasing the excitation power density, which is in line with the presence of carrier’s localization and non-idealities in this system. Moreover, the temperature-dependence of the PL peak energy displays an unusual red-blue-red shift (S-shaped) behavior when raising the temperature. These observations can be related to the inhomogeneous distribution of indium which gives rise to the appearance of dislocations and other defects which serve as traps for charge carriers. Interestingly, those highly In-content InxGa1−xAs epitaxial layers show PL emission located between 1637 and 1811 nm (depending on In content) and thus might be suitable for in the design of novel heterostructure devices such as short wave infrared (SWIR) detectors.
Published: 2020
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7. 2D simulation of a microfluidic biosensor for CRP detection into a rotating micro-channel

Author: Errachid Abdelhamid, Mounir Ben Ali, Marshet Getaye, Imen Dermoul, Mohamed Bahri, University of Chinese Academy of Sciences, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Preparatory Institute for Engineering of Nabeul IPEIN, CAS Center of Excellence in Nanoscience, Micro & Nanobiotechnologies, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)
Subjects: Centrifugal force, Work (thermodynamics), Analyte, Materials science, Microchannel, General Chemical Engineering, 010401 analytical chemistry, General Engineering, General Physics and Astronomy, Angular velocity, 02 engineering and technology, Mechanics, 021001 nanoscience & nanotechnology, 01 natural sciences, Finite element method, 0104 chemical sciences, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Fluid dynamics, General Earth and Planetary Sciences, General Materials Science, 0210 nano-technology, Biosensor, General Environmental Science
Abstract: International audience; Previously, pumping systems using centrifugal force has been regarded as an attractive control method for fluid flow interior microchannel. In this work, we propose a novel design of a biosensor for complex reactive protein detection in two-dimensional rotating microchannel using the finite element method. We have first developed the physical mod-eling of the centrifugal force driven, and detailed velocity profile and expended the pressure distribution. Several crucial factors that influence the equilibrium binding time are discussed, including the bulk analyte concentration and the biosensor length. The obtained analytical results reveal that the binding reaction is largely enhanced with the increase of the angular velocity. Hence, an appropriate choice of the angular velocity may enhance the microfluidic biosensor performance and reduce considerably the time response. This work can open new opportunity for further investigation in microflow injection experimental studies.
Published: 2019
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8. Geomembranes over GCLS: The optimal combination for barriers against contaminant transport

Author: Touze, N., Bannour, H., Hydrosystèmes continentaux anthropisés : ressources, risques, restauration (UR HYCAR), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), and Université de Sousse
Subjects: geosynthetic clay liner, pollutants, geomembrane, [SDE]Environmental Sciences, POLLUANT, GEOSYNTHETIQUE BENTONITIQUE
Abstract: Sekizinci ulusal geosentetikler konferansı (Huitième conférence nationale sur les géosynthétiques), Istanbul, TUR, 16-/05/2019 - 17/05/2019; International audience; The equivalence of composite liners involving a geomembrane (GMB) and a geosynthetic clay liner (GCL) to regulatory composite liners with a GMB and a compacted clay liner (CCL) can offer greater environmental protection to the underlying aquifer. It is suggested that GCLs and GMBs can play a very beneficial role in providing environmental protection even though GCLs are altered by their environment due to cation exchange and wet-dry cycles or there are defects in the GMB. The performance of GMB-GCL composite liners is accessed in terms of diffusion of contaminants and in terms of advective transfer due to the presence of defects in GMBs. Experimental, numerical and empirical quantification of advective transfers are examined through single GMBs and GCLs and arecompared to GMB-CCL composite liners included in the case of aged GCLs.
Published: 2019

9. Smart Adaptable Indoor Lighting System (SAILS)

Author: Cherif Dridi, Mohamed Mbarki, Salah Eddine Bouzid, Mohamed Nazih Omri, Institut Supérieur d'informatique et des Techniques de Communication [Hammam Sousse] (ISITC), ISITC, Laboratoire d'Acoustique de l'Université du Mans (LAUM), Centre National de la Recherche Scientifique (CNRS)-Le Mans Université (UM), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, NANOMISENE RD Laboratory [Sousse], and Centre for Research on Microelectronics and Nanotechnology of Sousse | Centre de recherche en microélectronique et nanotechnologies [Sousse] (CRMN)
Subjects: Computer science, [SHS.INFO]Humanities and Social Sciences/Library and information sciences, Real-time computing, 02 engineering and technology, 01 natural sciences, 7. Clean energy, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], law.invention, [INFO.INFO-IU]Computer Science [cs]/Ubiquitous Computing, [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], law, [INFO.INFO-SY]Computer Science [cs]/Systems and Control [cs.SY], 0202 electrical engineering, electronic engineering, information engineering, [INFO]Computer Science [cs], Smart lighting, ComputingMilieux_MISCELLANEOUS, 010401 analytical chemistry, 020206 networking & telecommunications, 0104 chemical sciences, Power (physics), Light intensity, Work (electrical), 13. Climate action, Control system, Energy (signal processing), Efficient energy use, Light-emitting diode
Abstract: The issue of saving energy is the main incentive in many researches. Lighting is the main factor contributing to these problems is lighting. Its costs to be covered by local municipality are heavy. The aim of this work is to propose a smart adaptable lighting system. In particular, we proposed an approach that generates in an intelligent way all possible lighting strategies according to user preferences while respecting lighting norms. Moreover, our automated system control light level to save energy. It dims lighting sources to maintain a required level when needed according to space occupation and light intensity level. Moreover, it detects nodes failure and overcomes resulting lack. Our system implements energy efficient technologies as ZigBee and LEDs. It monitors sensors and lighting sources states in real-time. To assess the usefulness of our system, we compared our system to other works. Experimental results show that it saves remarkable power, which can reach 77%, as compared to conventional systems without sensors and without an intelligent system.
Published: 2019
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10. Automatic Speech Emotion Recognition Using Machine Learning

Author: Mohamed Ali Mahjoub, Mohamed Mbarki, Youssef Serrestou, Catherine Cléder, Kosai Raoof, Leila Kerkeni, Laboratoire d'Acoustique de l'Université du Mans (LAUM), Centre National de la Recherche Scientifique (CNRS)-Le Mans Université (UM), Laboratory of Advanced Technology and Intelligent Systems (LATIS), Ecole Nationale d'Ingénieurs de Sousse (ENISo), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Centre de recherche en éducation de Nantes (CREN), Le Mans Université (UM)-Université de Nantes - UFR Lettres et Langages (UFRLL), and Université de Nantes (UN)-Université de Nantes (UN)
Subjects: feature extraction recurrent neural, Computer science, Speech recognition, InformationSystems_INFORMATIONSTORAGEANDRETRIEVAL, 02 engineering and technology, multivariate linear regression, 030507 speech-language pathology & audiology, 03 medical and health sciences, ComputingMethodologies_PATTERNRECOGNITION, machine learning, MFCC, speech emotion recognition, 0202 electrical engineering, electronic engineering, information engineering, Automatic speech, 020201 artificial intelligence & image processing, [INFO.EIAH]Computer Science [cs]/Technology for Human Learning, Emotion recognition, 0305 other medical science, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), network SVM, modulation spectral features
Abstract: International audience; This chapter presents a comparative study of speech emotion recognition (SER) systems. Theoretical definition, categorization of affective state and the modalities of emotion expression are presented. To achieve this study, an SER system, based on different classifiers and different methods for features extraction, is developed. Mel-frequency cepstrum coefficients (MFCC) and modulation spectral (MS) features are extracted from the speech signals and used to train different classifiers. Feature selection (FS) was applied in order to seek for the most relevant feature subset. Several machine learning paradigms were used for the emotion classification task. A recurrent neural network (RNN) classifier is used first to classify seven emotions. Their performances are compared later to multivariate linear regression (MLR) and support vector machines (SVM) techniques, which are widely used in the field of emotion recognition for spoken audio signals. Berlin and Spanish databases are used as the experimental data set. This study shows that for Berlin database all classifiers achieve an accuracy of 83% when a speaker normalization (SN) and a feature selection are applied to the features. For Spanish database, the best accuracy (94 %) is achieved by RNN classifier without SN and with FS.
Published: 2019
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11. Speech Communication Automatic speech emotion recognition using an optimal combination of features based on EMD-TKEO

Author: Kerkeni, Leila, Serrestou, Youssef, Raoof, Kosai, Mbarki, Mohamed, MAHJOUB, Mohamed, Cléder, Catherine, Laboratoire d'Acoustique de l'Université du Mans (LAUM), Centre National de la Recherche Scientifique (CNRS)-Le Mans Université (UM), Laboratory of Advanced Technology and Intelligent Systems (LATIS), Ecole Nationale d'Ingénieurs de Sousse (ENISo), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Centre de recherche en éducation de Nantes (CREN), Université de Nantes - UFR Lettres et Langages (UFRLL), and Université de Nantes (UN)-Université de Nantes (UN)-Le Mans Université (UM)
Subjects: Speech Emotion Recognition, feature selection, machine learning, TKEO, classification, human-computer interaction, feature extraction, SVM, EMD, [INFO.EIAH]Computer Science [cs]/Technology for Human Learning, RNN, spectral modulation
Abstract: International audience; In this paper, we propose a global approach for speech emotion recognition (SER) system using empirical mode decomposition (EMD). Its use is motivated by the fact that the EMD combined with the Teager-Kaiser Energy Operator (TKEO) gives an efficient time-frequency analysis of the non-stationary signals. In this method, each signal is decomposed using EMD into oscillating components called intrinsic mode functions (IMFs). TKEO is used for estimating the time-varying amplitude envelope and instantaneous frequency of a signal that is supposed to be Amplitude Modulation-Frequency Modulation (AM-FM) signal. A subset of the IMFs was selected and used to extract features from speech signal to recognize different emotions. The main contribution of our work is to extract novel features named modulation spectral (MS) features and modulation frequency features (MFF) based on AM-FM modulation model and combined them with cepstral features. It is believed that the combination of all features will improve the performance of the emotion recognition system. Furthermore, we examine the effect of feature selection on SER system performance. For classification task, Support Vecto Machine (SVM) and Recurrent Neural Networks (RNN) are used to distinguish seven basic emotions. Two databases-the Berlin corpus, and the Spanish corpus-are used for the experiments. The results evaluated on the Spanish emotional database, using RNN classifier and a combination of all features extracted from the IMFs enhances the performance of the SER system and achieving 91.16% recognition rate. For the Berlin database, the combination of all features using SVM classifier has 86.22% recognition rate.
Published: 2019
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12. Wireless Sensor and Actuator Network Deployment Optimization for a Lighting Control

Author: Salah Eddine Bouzid, Youssef Serrestou, Mohamed Mbarki, Cherif Dridi, Kosai Raoof, Mohamed Nazih Omri, Bouzid, Salah Eddine, Laboratoire d'Acoustique de l'Université du Mans (LAUM), Centre National de la Recherche Scientifique (CNRS)-Le Mans Université (UM), Institut Supérieur d'informatique et des Techniques de Communication [Hammam Sousse] (ISITC), ISITC, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Center for Research on Microelectronics and Nanotechnology [Sousse] (CRMN), Laboratoire MARS (Modeling of Automated Reasoning Systems) [Université de Sousse], Institut Supérieur d'Informatique et des Techniques de Communication (Université de Sousse) (ISITCom), Université de Sousse-Université de Sousse, NANOMISENE RD Laboratory [Sousse], and Centre for Research on Microelectronics and Nanotechnology of Sousse | Centre de recherche en microélectronique et nanotechnologies [Sousse] (CRMN)
Subjects: [INFO.INFO-AI] Computer Science [cs]/Artificial Intelligence [cs.AI], lighting, Computer science, [SHS.INFO]Humanities and Social Sciences/Library and information sciences, Real-time computing, Control (management), coverage, 02 engineering and technology, [INFO] Computer Science [cs], 01 natural sciences, [SHS.INFO] Humanities and Social Sciences/Library and information sciences, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], genetic algorithm, 0202 electrical engineering, electronic engineering, information engineering, Network deployment, Wireless, [INFO]Computer Science [cs], ComputingMilieux_MISCELLANEOUS, Connectivity, [INFO.INFO-NI] Computer Science [cs]/Networking and Internet Architecture [cs.NI], business.industry, 020208 electrical & electronic engineering, 010401 analytical chemistry, WSAN, [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO], [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, 0104 chemical sciences, weighted-sum method, [INFO.INFO-MO] Computer Science [cs]/Modeling and Simulation, Actuator, business, optimization
Abstract: International audience; Wireless Sensor and Actuator Networks (WSANs) are widely used in smart control system as home automation, military service, etc. They consist of hundreds of heterogeneous nodes. Due to this high density, finding an optimal deployment becomes a NP-Hard task. So, determining different node positions, that ensure the highest QoS of these networks, is the most significant challenges. In this paper, we study this problem for light control application. We expose our models for coverage, connectivity and lighting metrics. These proposed models, are adapted and validated by real measurements. The optimization approach is based on Genetic Algorithm for both regular and random deployment. The proposed approach is evaluated for different lighting space shapes, and the results are presented and compared to other studies.
Published: 2019
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13. Operational modal identification in the presence of harmonic excitation

Author: Vincent Gagnol, Maher Abdelghani, Laurent Sabourin, Asia Maamar, Thien-Phu Le, Institut Pascal (IP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-SIGMA Clermont (SIGMA Clermont)-Centre National de la Recherche Scientifique (CNRS), SIGMA Clermont (SIGMA Clermont)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire de Mécanique et d'Energétique d'Evry (LMEE), Université d'Évry-Val-d'Essonne (UEVE), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0209 industrial biotechnology, Acoustics and Ultrasonics, Computer science, Modal analysis, Transmissibility functions, 02 engineering and technology, [PHYS.MECA]Physics [physics]/Mechanics [physics], Operational modal analysis, 01 natural sciences, Transmissibility (vibration), Vibration, Operational Modal Analysis, 020901 industrial engineering & automation, Modal, Control theory, Harmonics, 0103 physical sciences, Harmonic, 010301 acoustics, Harmonic components, Subspace topology, Stochastic subspace identification
Abstract: International audience; The dynamic behavior of structures can be studied by the identification of their modal parameters. Classical modal analysis methods are based on the relation between the forces applied to structures (inputs) and their vibration responses (outputs). In real operational conditions it is difficult, or even impossible, to measure the excitation. For this reason, operational modal analysis approaches which consider only output data are proposed. However, most of these output-only techniques are proposed under the assumption of white noise excitation. If additional components, like harmonics for instance, are present in the exciting force, they will not be separated from the natural frequencies. Consequently, this assumption is no longer valid. In this context, an operational modal identification technique is proposed in order to only identify real poles and eliminate spurious ones. It is a method based on transmissibility functions. The objective of the proposed paper is to identify modal parameters in operational conditions in the presence of harmonic excitations. Identification is performed using a method based on transmissibility measurements and then with the classical stochastic subspace identification method, which is based on white noise excitation. These two methods are first applied to numerical examples and then to a laboratory test. Results validate the novel ability of the method based on transmissibility measurements to eliminate harmonics, contrary to the stochastic subspace identification approach.
Published: 2018
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14. Constrained predictive control of a SISO nonlinear system based on third-order S-PARAFAC Volterra models

Author: Anis Khouaja, Hassani Messaoud, José Ragot, Tarek Garna, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, École Nationale d’Ingénieurs de Monastir (ENIM), Centre de Recherche en Automatique de Nancy (CRAN), Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL), and Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0209 industrial biotechnology, Computer simulation, Computer science, 010103 numerical & computational mathematics, 02 engineering and technology, 01 natural sciences, Nonlinear programming, [SPI.AUTO]Engineering Sciences [physics]/Automatic, Reduction (complexity), Nonlinear system, Model predictive control, 020901 industrial engineering & automation, Control theory, Benchmark (computing), Applied mathematics, Quadratic programming, 0101 mathematics, Instrumentation, Parametric statistics
Abstract: International audience; This paper is concerned with the identification and nonlinear predictive control approach for a nonlinear process based on a third-order reduced complexity, discrete-time Volterra model called the third-order S-PARAFAC Volterra model. The proposed model is given using the PARAFAC tensor decomposition that provides a parametric reduction compared with the conventional Volterra model. In addition, the symmetry property of the Volterra kernels allows us to further reduce the complexity of the model. These properties allow synthesizing a nonlinear model-based predictive control (NMBPC). Then we construct the general form of a new predictor and we propose an optimization algorithm formulated as a quadratic programming (QP) algorithm under linear and nonlinear constraints. The performance of the proposed third-order S-PARAFAC Volterra model and the developed NMBPC algorithm are illustrated on a numerical simulation and validated on a benchmark such as a continuous stirred-tank reactor system.
Published: 2017
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15. Wireless sensor network deployment optimisation based on coverage, connectivity and cost metrics

Author: Mohamed Nazih Omri, Cherif Dridi, Youssef Serrestou, Mohamed Mbarki, Kosai Raoof, Salah Eddine Bouzid, Institut Supérieur d'informatique et des Techniques de Communication [Hammam Sousse] (ISITC), ISITC, Laboratoire d'Acoustique de l'Université du Mans (LAUM), Centre National de la Recherche Scientifique (CNRS)-Le Mans Université (UM), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Center for Research on Microelectronics and Nanotechnology [Sousse] (CRMN), NANOMISENE RD Laboratory [Sousse], and Centre for Research on Microelectronics and Nanotechnology of Sousse | Centre de recherche en microélectronique et nanotechnologies [Sousse] (CRMN)
Subjects: Computer Networks and Communications, Computer science, [SHS.INFO]Humanities and Social Sciences/Library and information sciences, Distributed computing, Node (networking), High density, Optimal deployment, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Computer Science Applications, Task (project management), [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI], [INFO.INFO-PF]Computer Science [cs]/Performance [cs.PF], Control and Systems Engineering, Software deployment, Genetic algorithm, [INFO]Computer Science [cs], [MATH.MATH-OC]Mathematics [math]/Optimization and Control [math.OC], Electrical and Electronic Engineering, Wireless sensor network
Abstract: International audience; Wireless sensor network (WSN) deployment is still facing many challenges. These challenges are related to determining node positions that ensure a trade-off between different metrics such as coverage, k-coverage, connectivity and cost. Due to the high density of WSN, finding an optimal deployment becomes an NP-Hard task. In this paper, we study this problem of determining the optimal spatial node positions of WSN in indoor environments. We formulate this task as a constrained multi-objective optimisation problem (CMOOP). This formulation is based on mathematical modelling of the different above metrics. We explicit this original modelling and the CMOOP solving by genetic algorithm (GA) combined with the weighted-sum method. To prove the interest of the proposed methodology, the results of this work are presented and compared to other studies.
Published: 2020
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16. Nanostructural, optical and electrical properties of vacuum evaporated films of an azo-calix[4]arene derivative

Author: I. Bonnamour-Dumazet, Joel Davenas, H. Ben Ouada, Cherif Dridi, R. Ben Chaabane, Laboratoire de Physique et Chimie des Interfaces [Monastir] (LPCI), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-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)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut de Chimie du CNRS (INC), Institut de Chimie et Biochimie Moléculaires et Supramoléculaires (ICBMS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Supérieure Chimie Physique Électronique de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Lesur, Hélène
Subjects: 010302 applied physics, [CHIM.POLY] Chemical Sciences/Polymers, Electron mobility, Photoluminescence, Materials science, Absorption spectroscopy, Analytical chemistry, 02 engineering and technology, Dielectric, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 7. Clean energy, 01 natural sciences, Space charge, Surfaces, Coatings and Films, Vacuum evaporation, Dielectric spectroscopy, [CHIM.POLY]Chemical Sciences/Polymers, 0103 physical sciences, Thin film, 0210 nano-technology, Instrumentation
Abstract: International audience; The nanomorphology, optical and electrical properties of vacuum-deposited azo-calix[4]arene thin films have been investigated. The nanostructured films exhibit absorption spectra with a resolved electronic structure in the UV-vis and a blue photoluminescence emission at about 430 nm independent of the excitation wavelength. The current-voltage (I-V) characteristics of ITO/azo-calix[4]arene/Au devices have been studied. The I-V dependence follows a power law, I ∝ Vm, which is typical of a space-charge-limited current. Moreover, from the I-V measurements, we have estimated the effective hole mobility of not, vert, similar7.5 × 10−6 cm2/V s in the vacuum-deposited azo-calix[4]arene thin films. Using impedance spectroscopy over a broad frequency range, i.e. 100 Hz to 10 MHz, it is found that the ac behavior of an ITO/azo-calix[4]arene/Au device shows several features, described by the simple RC circuit representing an undepleted bulk region. Values of the electrical circuit parameters deduced from fitting experimental data to the model have given a dielectric relaxation time in the millisecond range.
Published: 2009
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17. Transport mechanism and trap distribution in ITO/azo-calix[4]arene derivative/Al diode structure

Author: A. Rouis, H. Ben Ouada, Cherif Dridi, I. Dumazet-Bonnamour, Joel Davenas, Laboratoire de Physique et Chimie des Interfaces [Monastir] (LPCI), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Laboratoire d'Application de la Chimie à l'Environnement (LACE), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut de Chimie du CNRS (INC), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and Lesur, Hélène
Subjects: 010302 applied physics, [CHIM.POLY] Chemical Sciences/Polymers, Materials science, Equivalent series resistance, Band gap, business.industry, Analytical chemistry, 02 engineering and technology, Dielectric, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 7. Clean energy, 01 natural sciences, Capacitance, Electronic, Optical and Magnetic Materials, Dielectric spectroscopy, [CHIM.POLY]Chemical Sciences/Polymers, Optics, Depletion region, 0103 physical sciences, Electrical measurements, Electrical and Electronic Engineering, 0210 nano-technology, business, Ohmic contact
Abstract: International audience; Electrical measurements have been performed on spin-coated azo-calix[4]arene derivative on pre-cleaned indium thin oxide (ITO) substrates using current versus voltage, capacitance versus voltage and impedance spectroscopy measurements. The nature of trap states in single layer ITO/azo-calix[4]arene derivative/Al organic diodes has also been investigated. The energy band gap of the thin film containing calixarene derivative has been measured by UV-Vis absorption spectroscopy and is about 2.77 eV. The current-voltage characteristics have shown ohmic behavior at low voltages. At high applied bias the I-V characteristics can be successfully modeled by space-charge limited current (SCLC) theory. The impedance dependence of bias and frequency is discussed in terms of the presence of a depletion layer in the bulk. The device is accurately modeled, in a range of frequency between 100 Hz and 1 MHz, as a single parallel resistor and capacitor network placed in series with a resistance. Their values deduced from fitting experimental data to the model have given a dielectric relaxation time in the ms range and an exponential trap distribution.
Published: 2007
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18. 3D FEM Simulation study of RF μCOILS For biomedical and environmental applications

Author: Benmansour, Nasreddine, Dridi, Cherif, Yaakoubi, Nourdin, Bouchet-Fakri, Latifa, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire d'Acoustique de l'Université du Mans (LAUM), Le Mans Université (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2015

19. Investigation of structural, optical and electrical properties of a new cobalt phthalocyanine thin films with potential applications in perchlorate sensor

Author: M. Ben Ali, Mohammed Nooredeen Abbas, Azin Ali, Abdelhamid Errachid, Cherif Dridi, Mourad Braik, Ctr Res Microelect & Nanotechnol Sousse, Université de Monastir - University of Monastir (UM), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Analyt Lab, National Research Centre - NRC (EGYPT), Micro & Nanobiotechnologies, Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), This work was partially supported by the FP7-PEOPLE-2012-IRSES No 318053: SMARTCANCERSENS project and NATO Science for Peace (SFP) Project CBP.NUKR.SFP 984173., and European Project: 318053,EC:FP7:PEOPLE,FP7-PEOPLE-2012-IRSES,SMARTCANCERSENS(2013)
Subjects: I-V characteristics, SOLAR-CELLS, Cobalt(II) phthalocyanine derivative, Materials science, DEVICES, Absorption spectroscopy, Band gap, Analytical chemistry, Impedance spectroscopy, 02 engineering and technology, Electronic structure, DIODE, 7. Clean energy, 01 natural sciences, TRANSPORT-PROPERTIES, Perchlorate, chemistry.chemical_compound, symbols.namesake, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, 0103 physical sciences, Materials Chemistry, COMPOSITES, Thin film, 010302 applied physics, Mechanical Engineering, Metals and Alloys, Conductance, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Dielectric spectroscopy, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, Mechanics of Materials, Raman spectroscopy, symbols, 0210 nano-technology, BEHAVIOR
Abstract: International audience; Optical, structural and electrical properties of new cobalt phthalocyanine derivatives (Co(II)Pc-AP) thin films have been investigated. The Raman spectroscopy study shows the different vibrations bands corresponding to the metallophthalocyanine. The cobalt-phthalocyanine derivative films exhibit absorption spectra with a resolved electronic structure in the UV-vis range and the energy gap was determined by the Tauc method. Electrical properties of the ITO/Co(II)Pc-AP/Al structure have been investigated by I-V characteristics and impedance spectroscopy measurements. The conduction is governed by space-charge-limited current (SCLC) mechanism. The impedance spectroscopy study showed a hopping transport process, which is a typical behavior of disordered materials. The electrical characteristics of the devices were modeled by a single parallel resistor and capacitor network in series with a resistance.
Published: 2015
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20. Impedance response to toxic methylamine of recombinant primary amine oxidase coupled with mercaptohexadecanoic acid monolayer

Author: Gonchar, M., Zakalska, Oksana, Zakalskiy, Andriy, Ben Ali, Mounir, Zine, Nadia, Dridi, Cherif, Errachid, Abdelhamid, Jaffrezic-Renault, Nicole, Korpan, Y., Institute of Applied Biotechnology and Basic Sciences, Rzeszow University, Institute of Cell Biology, National Academy of Science of Ukraine, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Micro & Nanobiotechnologies, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Center for Research on Microelectronics and Nanotechnology [Sousse] (CRMN), Interfaces & biosensors - Interfaces & biocapteurs, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine (NASU), Sibirny A., Fedorovych D., Gonchar M., Grabek-Lejko D., Bussy, Agnès, and Sibirny A., Fedorovych D., Gonchar M., Grabek-Lejko D.
Subjects: [CHIM.ANAL] Chemical Sciences/Analytical chemistry, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2015

21. Development of a perchlorate sensor based on Co-phthalocyanine derivative by impedance spectroscopy measurements

Author: Braik, Mohammed, Dridi, C., Abbas, Mohammad Nooredeen, Ben Ali, M, Errachid, Abdelhamid, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire des Interfaces et Matériaux Avancés [Monastir] (LIMA), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Analyt Lab, National Research Centre - NRC (EGYPT), Micro & Nanobiotechnologies, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), This work was partially supported by the FP7-PEOPLE-2012-IRSES No. 318053: SMARTCANCERSENS project and NATO Science for Peace (SFP) Project CBP.NUKR.SFP 984173., European Project: 318053,EC:FP7:PEOPLE,FP7-PEOPLE-2012-IRSES,SMARTCANCERSENS(2013), Bussy, Agnès, Micro/nanosensors for early cancer warning system - diagnostic and prognostic information - SMARTCANCERSENS - - EC:FP7:PEOPLE2013-01-01 - 2016-12-31 - 318053 - VALID, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [CHIM.MATE] Chemical Sciences/Material chemistry, Cobalt(II) phthalocyanine derivative, [CHIM.ANAL] Chemical Sciences/Analytical chemistry, COMPLEX, POLYMERIC MEMBRANE-ELECTRODE, Perchlorate, POLYPYRROLE, HG2+ IONS, [CHIM.MATE]Chemical Sciences/Material chemistry, GOLD ELECTRODES, Chemical sensor, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, [CHIM.THEO] Chemical Sciences/Theoretical and/or physical chemistry, ELECTROCHEMICAL IMPEDANCE, ION CHROMATOGRAPHY, THIN-FILMS, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, CYCLIC VOLTAMMETRY, Electrochemical impedance spectroscopy (EIS), SPECTROPHOTOMETRIC DETERMINATION
Abstract: International audience; In this work, we have prepared a perchlorate sensor based on cobalt phthalocyanine derivative molecules. The membrane was deposited onto gold substrates using dip-coating method. Adhesion and morphological properties have been studied using contact angle measurements. Then, the sensitivity, the detection range and the detection limit were determined using electrochemical impedance spectroscopy (EIS) measurements. The sensor was also studied specificity towards interfering ions nitrate (NO3-), carbonate (CO32-) and sulfate (SO42-) to show the specificity of the membrane. The impedance behavior of the perchlorate sensor (gold/membrane) has been modeled by an equivalent electrical circuit using a modified Randles model for better understanding the phenomena present at the interface membrane/electrolyte.
Published: 2015

22. Development of a capacitive chemical sensor based on Co(II)-phthalocyanine acrylate-polymer/HfO2/SiO2/Si for detection of perchlorate

Author: Braik, M, Dridi, C., Ben Ali, M, Ali, M, Abbas, M, Zabala, M., Bausells, Joan, Zine, Nadia, Jaffrezic-Renault, Nicole, Errachid, Abdelhamid, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire des Interfaces et Matériaux Avancés [Monastir] (LIMA), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Ctr Res Microelect & Nanotcchnol Sousse, Analyt Lab, National Research Centre (NRC), Instituto de Microelectrònica de Barcelona (IMB-CNM), Centro Nacional de Microelectronica [Spain] (CNM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Micro & Nanobiotechnologies, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and Interfaces & biosensors - Interfaces & biocapteurs
Subjects: lcsh:T, ALD, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, BIOSENSORS, HFO2 FILMS, lcsh:Technology
Abstract: We report the development of a chemical sensor based on a Co(II) phthalocyanine acrylate polymer (Co(II)Pc-AP) for perchlorate anion detection. We have used two types of transducers, silicon nitride (Si3N4) and hafnium oxide (HfO2). The adhesion of the Co(II)Pc-AP on different transducers and their surface qualities have been studied by contact angle measurements. We have studied the pH effect on Al/Si/SiO2/HfO2/electrolyte capacitance values for different phosphate buffer solutions (PBS). This optimization step has allowed a sensitivity value of about 44 mV decade−1 towards H+ ions. The fabricated sensors based on Si3N4 and HfO2 transducers functionalized with a Co(II)Pc-AP membrane have been characterized by C(V) measurements for different perchlorate concentrations (from 10−7 to 10−2 M). The sensor developed with the HfO2 transducer shows better performances compared to that based on Si3N4: a larger detection range (10−7 to 10−2 and 10−3 to 10−2 M, respectively) and lower detection limits (10−7 and 10−3 M). The specificities of our perchlorate sensor have been tested for some interfering ions (nitrate, sulfate and carbonate).
Published: 2015
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23. Coarse Indoor Localization Using Space-Time and Semantic-Context Representations of Geo-Referenced Video Sequences

Author: Mansouri, J., Seddik, B., Chateau, T., Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Institut Pascal (IP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-SIGMA Clermont (SIGMA Clermont)-Centre National de la Recherche Scientifique (CNRS), and Chateau, Thierry
Subjects: [INFO.INFO-CV] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], [INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], ComputingMilieux_MISCELLANEOUS
Abstract: International audience; no abstract
Published: 2014

24. Augmented Skeletal Joints for Temporal Segmentation of Sign Language Actions

Author: Najoua Essoukri Ben Amara, Thierry Chateau, Sami Gazzah, Bassem Seddik, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Institut Pascal (IP), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-SIGMA Clermont (SIGMA Clermont)-Centre National de la Recherche Scientifique (CNRS), and Chateau, Thierry
Subjects: Segmentation-based object categorization, Computer science, business.industry, Feature extraction, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Scale-space segmentation, [INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], 020207 software engineering, 02 engineering and technology, Image segmentation, Sign language, [INFO.INFO-CV] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], Gesture recognition, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Segmentation, Computer vision, Artificial intelligence, business, ComputingMilieux_MISCELLANEOUS, Gesture
Abstract: We present in this paper a novel solution for temporal segmentation of human gestures that takes advantage of the skeletal-joints streams offered by the Kinect sensor. Our contribution consist in introducing an improved skeletal representation and its usage in a multilayer motion delimitation that distinguishes the non-vocabulary actions. The evaluation of the solution is presented on a subset of the Chalearn Gesture Challenge (CGC) 2014 dataset. The obtained temporal segmentation is better than the CGC baseline methods and has proved to be important for the task of human-action recognition.
Published: 2014

25. Site-binding model as a basis for numerical evaluation of analytical parameters of capacitance-biosensors for formaldehyde and methylamine detection

Author: Yaroslav I. Korpan, Cherif Dridi, J. Chermiti, Mykhailo Gonchar, M. Ben Ali, Nicole Jaffrezic-Renault, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Unité de Recherche de Physique des Semi-conducteurs et Capteurs, Université de Carthage - University of Carthage-IPEST, Laboratoire des Interfaces et Matériaux Avancés [Monastir] (LIMA), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Institute of Cell Biology, National Academy of Science of Ukraine, Institute of Applied Biotechnology and Basic Sciences, Rzeszow University, SIMS - Surfaces-(bio)Interfaces - Micro & Nano Systèmes (2011-2014), Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine (NASU), NATO Science for Peace (SFP) Project CBP.NUKR.SFP 984173, and FP7-PEOPLE-2012-IRSES No. 318053: SMARTCANCERSENS project.
Subjects: Analyte, Nanotechnology, 02 engineering and technology, Numerical simulation, 01 natural sciences, Capacitance, Buffer (optical fiber), chemistry.chemical_compound, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Microsystem, Materials Chemistry, Mott-Schottky equation, Electrical and Electronic Engineering, Capacitance structures, Instrumentation, Computer simulation, Methylamine, business.industry, 010401 analytical chemistry, Site-binding model, technology, industry, and agriculture, Metals and Alloys, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Semiconductor, Biosensors, chemistry, 0210 nano-technology, business, Biological system, Biosensor
Abstract: International audience; The development of sensor microsystems, based on the biological recognition of analytes by sensitive molecules, requires numerical tools for the evaluation of sensor analytical characteristics. A digital platform, based on the site-binding model and Mott-Schottky equation, has been developed and used to estimate the responses of semiconductor-based capacitance biosensors for formaldehyde and methylamine determination. It has been demonstrated that the classical site-binding model cannot be applied for the analysis of the sensor behaviour and should be adjusted taking into account the effect of buffer type and its concentration and type as well as membrane composition on the capacitance biosensor response.
Published: 2013
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26. Nanomaterials based sensors for environment and health monitoring : fabrication, properties and performances

Author: Dridi, C., Ben Ali, Mounir, Ben Ouada, Hafedh, Vocanson, Francis, Jaffrezic-Renault, N., Errachid, A., Gonchar, M., Korpan, Y., Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire de Physique et Chimie des Interfaces [Monastir] (LPCI), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Sciences Analytiques (SA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Institute of Molecular Biology and Genetics, and National Academy of Sciences of Ukraine (NASU)
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2013

27. The mathematical analysis of a syntrophic relationship between two microbial species in a chemostat

Author: Tewfik Sari, Miled El Hajji, Jérôme Harmand, Information – Technologies – Analyse Environnementale – Procédés Agricoles (UMR ITAP), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Modelling and Optimisation of the Dynamics of Ecosystems with MICro-organisme (MODEMIC), 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)-Mathématiques, Informatique et STatistique pour l'Environnement et l'Agronomie (MISTEA), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire de Biotechnologie de l'Environnement [Narbonne] (LBE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)
Subjects: ANAEROBIC DIGESTION, digestion anaérobie, Chemostat, Biology, 01 natural sciences, 7. Clean energy, Stability (probability), Models, Biological, 010305 fluids & plasmas, COEXISTENCE, 03 medical and health sciences, Qualitative analysis, modèle mathématique, Bioreactors, Exponential stability, 0103 physical sciences, Positive equilibrium, ANALYSE MATHEMATIQUE, 030304 developmental biology, bactérie, MODELE MATHEMATIQUE, 0303 health sciences, Bacteria, Ecology, GLOBAL ASYMPTOTIC STABILITY, Applied Mathematics, CHEMOSTAT, General Medicine, Computational Mathematics, mathématiques appliquées, Modeling and Simulation, MICROBIOLOGIE, SYNTROPHIC RELATIONSHIP, [SDE]Environmental Sciences, MATHEMATIQUES, compétition, Digestion, General Agricultural and Biological Sciences, Biological system, syntrophic relationship, coexistence, global asymptotic, stability, anaerobic digestion
Abstract: [Departement_IRSTEA]Ecotechnologies [TR1_IRSTEA]INSPIRE; A mathematical model involving a syntrophic relationship between two populations of bacteria in a continuous culture is proposed. A detailed qualitative analysis is carried out as well as the analysis of the local and global stability of the equilibria. We demonstrate, under general assumptions of monotonicity which are relevant from an applied point of view, the asymptotic stability of the positive equilibrium point which corresponds to the coexistence of the two bacteria. A syntrophic relationship in the anaerobic digestion process is proposed as a real candidate for this model.
Published: 2012
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28. Scheduling with uncertainties on new computing platforms

Author: Johnatan E. Pecero Sánchez, Amine Mahjoub, Denis Trystram, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, PrograMming and scheduling design fOr Applications in Interactive Simulation (MOAIS), 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), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF), Laboratoire d'Informatique de Grenoble (LIG), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Inria Grenoble - Rhône-Alpes, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), and Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Rate-monotonic scheduling, Earliest deadline first scheduling, 021103 operations research, Control and Optimization, Computer science, Applied Mathematics, Distributed computing, 0211 other engineering and technologies, 0102 computer and information sciences, 02 engineering and technology, Dynamic priority scheduling, Round-robin scheduling, 01 natural sciences, Multiprocessor scheduling, Fair-share scheduling, Computational Mathematics, Fixed-priority pre-emptive scheduling, 010201 computation theory & mathematics, Two-level scheduling, [INFO.INFO-DC]Computer Science [cs]/Distributed, Parallel, and Cluster Computing [cs.DC], Computer Science::Operating Systems
Abstract: International audience; New distributed computing platforms (grids) are based on interconnections of a large number of processing elements. A most important issue for their effective utilization is the optimal use of resources through proper task scheduling. It consists of allocating the tasks of a parallel program to processors on the platform and to determine at what time the tasks will start their execution. As data may be subject to uncertainties or disturbances, it is practically impossible to precisely predict the input parameters of the task scheduling problem. We briefly survey existing approaches for dealing with data uncertainties and discuss their relevance in the context of grid computing. We describe the stabilization process and analyze a scheduling algorithm that is intrinsically stable (i.e., it mitigates the effects of disturbances in input data at runtime). This algorithm is based on a decomposition of the application graph into convex sets of vertices. Finally, it is compared experimentally to pure on-line and well-known off-line algorithms.
Published: 2011
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29. Nanomatériaux organiques et hybrides pour l'environnement: Propriétés et applications

Author: Dridi, C., Vocanson, Francis, Ben Ouada, Hafedh, Jaffrezic-Renault, N., Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Laboratoire de Physique et Chimie des Interfaces [Monastir] (LPCI), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Sciences Analytiques (SA), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry
Published: 2010

30. Modélisation du comportement électrique de microcapteurs chimiques et biologiques

Author: Chermiti, J., Ben Ali, M., Vocanson, Francis, Jaffrezic-Renault, N., Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire de Physique de Semi-Conducteurs et Capteurs, IPEST, Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Sciences Analytiques (SA), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry
Published: 2010

31. AMINE-SENSITIVE ELECTROCHEMICAL SENSORS BASED ON NEW AMINE OXIDASE AND CALIXARENES

Author: Korpan, Y., Gonchar, M., Sosovska, O., Ben Ali, Mounir, Biloivan, O., Vocanson, Francis, Jaffrezic-Renault, N., Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine (NASU), Institute of cell biology, Sciences Analytiques (SA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Natl Acad Sci Ukraine, Inst Mol Biol & Genet, Lab Biomol Elect, Natl Acad Sci Ukraine, Laboratoire Hubert Curien [Saint Etienne] (LHC), and Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry
Published: 2009

32. Optical and electrical properties of semi-conducting calix[5,9]arene thin films with potential applications in organic electronics: a comparative study

Author: Dridi, C., Benzarti, M., Vocanson, Francis, Ben Chaabane, R., Davenas, J., Ben Ouada, Hafedh, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire de Physique et Chimie des Interfaces [Monastir] (LPCI), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Institut de Chimie du CNRS (INC)
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2009

33. Electrochemical study of Si/SiO2/Si3N4 and gold electrodes functionalised by thiacalix[4]arene for the detection of Hg2+ ions in solution

Author: Bergaoui, Y., Ben Ali, M., Abdelgani, A., Vocanson, Francis, Jaffrezic-Renault, Nicole, Laboratoire de Physique de Semi-Conducteurs et Capteurs, IPEST, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Sciences Analytiques (SA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), projet NATO CLG, and projet NATO
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry
Published: 2008

34. Prétraitement de documents anciens

Author: Boulehmi, H., Seddik, B., Kricha, A., Essoukri Ben Amara, N., Ecole Nationale d'Ingénieurs de Tunis (ENIT), Université de Tunis El Manar (UTM), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, École Nationale d’Ingénieurs de Monastir (ENIM), National Engineering School of Sousse / Ecole Nationale d'Ingénieurs de Sousse (ENISo), Ecole Nationale d'Ingénieurs de Sousse (ENISo), and Antoine Tabbone et Thierry Paquet
Subjects: [INFO.INFO-TT]Computer Science [cs]/Document and Text Processing, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, morphologie mathématique multi-échelle, caractéristiques statistiques et texturales, [INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], prétraitement, Documents anciens, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing
Abstract: International audience; La problématique liée au prétraitement des documents anciens reste encore d'actualité. Des approches multiples ont été proposées pour le rehaussement de la qualité des documents anciens cependant la présence simultanée, dans un même document, de deux ou plusieurs types de bruits laisse le problème encore ouvert. Dans ce papier, nous proposons une approche de prétraitement basée sur une analyse hybride texturale et statistique permettant d'identifier d'abord les défauts éventuels qu'elle présente (acidité de l'encre, recto/verso) et d'appliquer par la suite le prétraitement approprié moyennant l'exploration de la morphologie mathématique multi-échelle. Les différentes expérimentations réalisées ont été validées sur des images de manuscrits et imprimés anciens arabes en niveaux de gris, issues de la Bibliothèque Nationale de Tunis.
Published: 2008

35. Transport phenomena in Thiacalix[4]arene amide (TCA amide)

Author: Benzarti, M., Dridi, C., Ben Chaabane, R., Vocanson, Francis, Davenas, J., Ben Ouada, Hafedh, Laboratoire de Physique et Chimie des Interfaces [Monastir] (LPCI), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut de Chimie du CNRS (INC), and collaboration
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry
Published: 2008

36. Etude par ellipsométrie et spectroscopie d'impédance de couches minces à base de dérivés calix[n]aréniques et leurs applications pour la détection d'ions

Author: Dridi, C., Jamon, Damien, Benzarti, M., Vocanson, Francis, Ben Ali, Mounir, Ben Ouada, Hafedh, Jaffrezic-Renault, Nicole, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire de Physique et Chimie des Interfaces [Monastir] (LPCI), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Dispositifs et Instrumentation en Optoélectronique et micro-ondes (DIOM), Université Jean Monnet [Saint-Étienne] (UJM), Laboratoire Hubert Curien [Saint Etienne] (LHC), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Sciences Analytiques (SA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), and collaboration
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry
Published: 2008

37. Electrical and optical study on modified Thiacalix(4)arene sensing molecules: Application to Hg2+ ion detection

Author: S. Ben Maamar, Francis Vocanson, Joel Davenas, Cherif Dridi, R. Lamartine, Nicole Jaffrezic-Renault, M. Ben Ali, Faouzi Meganem, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire de Physique et Chimie des Interfaces [Monastir] (LPCI), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Laboratoire de Physique de Semi-conducteurs et Capteurs, Université de Tunis, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires (ICBMS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Supérieure Chimie Physique Électronique de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-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)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut de Chimie du CNRS (INC), Laboratoire de Synthese Organique, Université de Carthage - University of Carthage, Sciences Analytiques (SA), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), collaboration, and Vocanson, Francis
Subjects: Detection limit, [CHIM.MATE] Chemical Sciences/Material chemistry, Inorganic chemistry, Bioengineering, 02 engineering and technology, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Ion, Dielectric spectroscopy, Biomaterials, chemistry.chemical_compound, chemistry, Mechanics of Materials, Amide, Electrode, Molecule, Moiety, Absorption (chemistry), 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract: In this work, p-tert -butylthiacalix[4]arene with amide moiety (TCA amide) has been used as a receptor material for Hg 2+ detection. The TCA amide/gold electrodes were used as Hg 2+ sensor. Several conditions were optimised to enhance the sensitivity of the ion sensor, with a detection limit of about 10 − 4 M. At lower concentrations, the optical absorption technique was used to study the affinity of TCA amide/Hg 2+ . The evolution of the optical signal with Hg 2+ concentration gives an insight into the TCA amide/Hg 2+ interaction and shows the opportunity to use TCA amide molecules for Hg 2+ opto chemical sensor.
Published: 2008

38. Transport phenomena in thacalix[4]arene amide

Author: Benzarti, M., Dridi, C., Ben Chaabane, R., Vocanson, Francis, Davenas, J., Ben Ouada, Hafedh, Laboratoire de Physique et Chimie des Interfaces [Monastir] (LPCI), Faculté des Sciences de Monastir (FSM), Université de Monastir - University of Monastir (UM)-Université de Monastir - University of Monastir (UM), Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Laboratoire d'Application de la Chimie à l'Environnement (LACE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Institut de Chimie du CNRS (INC)
Subjects: [CHIM.MATE]Chemical Sciences/Material chemistry
Published: 2007

39. Capacitance electrochemical biosensor based on silicon nitride transducer for TNF-α cytokine detection in artificial human saliva: Heart failure (HF)

Author: Joan Bausells, Abdelhamid Errachid, Mohamed Bahri, Abdoullatif Baraket, Nadia Zine, Mounir Ben Ali, Centre de Recherche en Microélectronique et Nanotechnologie de sousse, Institut Supérieur des Sciences Appliquées et de Technologie de Sousse (ISSATS), Université de Sousse, Micro & Nanobiotechnologies, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Instituto de Microelectrònica de Barcelona (IMB-CNM), Centro Nacional de Microelectronica [Spain] (CNM)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), financial support from the European project KardiaTool [Grant No. 768686]., European Project: 768686,KardiaTool, 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)-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), Centro Nacional de Microelectronica [Spain] (CNM)-Consejo Superior de Investigaciones Científicas [Spain] (CSIC), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Saliva, Transducers, Biosensing Techniques, 02 engineering and technology, Electric Capacitance, 01 natural sciences, Capacitance, Analytical Chemistry, Contact angle, chemistry.chemical_compound, Limit of Detection, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Fluorescence microscope, Humans, Electrodes, ComputingMilieux_MISCELLANEOUS, Fluorescent Dyes, Immunoassay, Chromatography, Rhodamines, Tumor Necrosis Factor-alpha, Chemistry, Silicon Compounds, 010401 analytical chemistry, Antibodies, Monoclonal, Saliva, Artificial, Substrate (chemistry), Electrochemical Techniques, Silicon Dioxide, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Silicon nitride, 0210 nano-technology, Selectivity, Antibodies, Immobilized, Biosensor
Abstract: In the present study, we have developed a capacitance electrochemical biosensor based on silicon nitride substrate (Si3N4/SiO2/Si[P]/Al) for Tumour Necrosis Factor Alpha (TNF-α) cytokines detection. Micro-contact printing, Fluorescence microscopy characterization and contact angle measurement (CAM) were carried out during the bio-functionalization of the biosensor surface. Mott-Schottky analyses were applied for TNF-α detection within the range of 1 pg/mL to 30 pg/mL in which the immunosensor has exhibited a good linearity, a sensitivity of 4 mV.pM−1 and 4.4 mV.pM−1 in PBS and artificial saliva (AS) respectively. While the LOD was found at 0.38 pg/mL and 1 pg/mL in PBS and AS respectively. The developed immunosensor has also demonstrated a high and good selectivity for TNF-α detection in human AS when compared to other interferences like Cortisol and Interleukin-10. The performances of the developed biosensor are very promising for biomedical application to predict the first sign of inflammation.
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