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1,029 results on '"Popescu, D."'

104. USE OF PROBIOTICS IN DENTISTRY

Author

Godovanets, O. I., Moroz, A. V., and Popescu, D. G.

Subjects
пробіотики, стоматологія, карієс, захворювання тканин пародонта, probiotics, dentistry, caries, periodontal diseases, пробиотики, стоматология, кариес, заболевания тканей пародонта
Abstract

Мікробіоценоз ротової порожнини представлений значною кількістю мікроорганізмів. Основні стоматологічні нозології не мають свого специфічного збудника і розвиваються як наслідок змін місцевого мікробіоценозу. На фармацевтичному ринку наявні препарати на основі штамів представників нормальної мікрофлори. У сучасній стоматології пробіотики повноцінно заповнили нішу засобів для профілактики та лікування патологій ротової порожнини, що потребують корекції дисбіотичних порушень., Микробиоценоз полости рта представлен большим количеством микроорганизмов. Основные стоматологические нозологии не имеют своего специфического возбудителя и развиваются как следствие изменений местного микробиоценоза. На фармацевтическом рынке имеются препараты с штаммами представителей нормальной микрофлоры. В современной стоматологии пробиотики полноценно заполнили нишу препаратов для профилактики и лечения патологий ротовой полости, требующих коррекции дисбиотических нарушений., Microbiota of oral cavity is represented by a large number of microorganisms. Basic dental nosology don’t have any specific pathogen and started after changes in the local microbiocenosis. On a pharmaceutical market there are drugs with representatives of the normal microflora. In modern dentistry probiotics valuably filled the niche of products for the prevention and treatment of oral diseases requiring dysbiotic correction.

Published
2017

105. Lyapunov-based Methods for Maximizing the Domain of Attraction.

Author

Jerbi, H., Hamidi, F., Ben Aoun, S., Olteanu, S. C., and Popescu, D.

Subjects
LINEAR matrix inequalities, ALGORITHMS, LYAPUNOV functions, GENETIC algorithms, PROCESS optimization, AUTONOMOUS differential equations
Abstract

This paper investigates Lyapunov approaches to expand the domain of attraction (DA) of nonlinear autonomous models. These techniques had been examined for creating generic numerical procedures centred on the search of rational and quadratic Lyapunov functions. The outcomes are derived from all investigated methods: the method of estimation via Threshold Accepted Algorithm (TAA), the method of estimation via a Zubov technique and the method of estimation via a linear matrix inequality (LMI) optimization and genetic algorithms (GA). These methods are effective for a large group of nonlinear models, they have a significant ability of improvement of the attraction domain area and they are distinguished by an apparent propriety of direct application for compact and nonlinear models of high degree. The validity and the effectiveness of the examined techniques are established based on a simulation case analysis. The effectiveness of the presented methods is evaluated and discussed through the study of the renowned Van der Pol model. [ABSTRACT FROM AUTHOR]

Published
2020
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115. Flat tax sustainability in the Euro Zone

Author

Popescu, D.

Subjects
lcsh:HB1-3840, lcsh:HB71-74, lcsh:Economic theory. Demography, lcsh:Economics as a science, sustainability, flat tax, euro zone
Abstract

This paper explores the sustainability of the flat tax system in the conditions of euro adoption. Estonia and Slovakia are the only countries that experience both flat tax and euro. A comparative analysis of flat tax sustainability in Slovakia and Estonia offers the conclusion that the Romanian flat tax system is not sustainable from the perspective of the euro adoption criterion.

Published
2013

116. Monitoring quality and coverage of harm reduction services for people who use drugs: A consensus study

Author

Wiessing, L, Ferri, M, Běláčková, V, Carrieri, P, Friedman, SR, Folch, C, Dolan, K, Galvin, B, Vickerman, P, Lazarus, JV, Mravčík, V, Kretzschmar, M, Sypsa, V, Sarasa-Renedo, A, Uusküla, A, Paraskevis, D, Mendão, L, Rossi, D, van Gelder, N, Mitcheson, L, Paoli, L, Gomez, CD, Milhet, M, Dascalu, N, Knight, J, Hay, G, Kalamara, E, Simon, R, Comiskey, C, Rossi, C, Griffiths, P, Molinaro, S, Franchini, M, Siciliano, V, Benedetti, E, Perduca, M, Ylli, A, Anta, GB, Bravo Portela, MJ, Indave, I, Rácz, J, Zábranskỳ, T, Štefunková, M, Dávila, PF, Salekesin, M, Vorobjov, S, Dan, M, Fierbinteanu, C, Popescu, D, Verdes, L, Abagiu, AO, Hatzakis, A, Moudatsou, M, Antypas, T, Cadet-Tairou, A, Collins, AM, Liddell, D, Wiessing, L, Ferri, M, Běláčková, V, Carrieri, P, Friedman, SR, Folch, C, Dolan, K, Galvin, B, Vickerman, P, Lazarus, JV, Mravčík, V, Kretzschmar, M, Sypsa, V, Sarasa-Renedo, A, Uusküla, A, Paraskevis, D, Mendão, L, Rossi, D, van Gelder, N, Mitcheson, L, Paoli, L, Gomez, CD, Milhet, M, Dascalu, N, Knight, J, Hay, G, Kalamara, E, Simon, R, Comiskey, C, Rossi, C, Griffiths, P, Molinaro, S, Franchini, M, Siciliano, V, Benedetti, E, Perduca, M, Ylli, A, Anta, GB, Bravo Portela, MJ, Indave, I, Rácz, J, Zábranskỳ, T, Štefunková, M, Dávila, PF, Salekesin, M, Vorobjov, S, Dan, M, Fierbinteanu, C, Popescu, D, Verdes, L, Abagiu, AO, Hatzakis, A, Moudatsou, M, Antypas, T, Cadet-Tairou, A, Collins, AM, and Liddell, D

Abstract

© 2017 The Author(s). Background and aims: Despite advances in our knowledge of effective services for people who use drugs over the last decades globally, coverage remains poor in most countries, while quality is often unknown. This paper aims to discuss the historical development of successful epidemiological indicators and to present a framework for extending them with additional indicators of coverage and quality of harm reduction services, for monitoring and evaluation at international, national or subnational levels. The ultimate aim is to improve these services in order to reduce health and social problems among people who use drugs, such as human immunodeficiency virus (HIV) and hepatitis C virus (HCV) infection, crime and legal problems, overdose (death) and other morbidity and mortality. Methods and results: The framework was developed collaboratively using consensus methods involving nominal group meetings, review of existing quality standards, repeated email commenting rounds and qualitative analysis of opinions/experiences from a broad range of professionals/experts, including members of civil society and organisations representing people who use drugs. Twelve priority candidate indicators are proposed for opioid agonist therapy (OAT), needle and syringe programmes (NSP) and generic cross-cutting aspects of harm reduction (and potentially other drug) services. Under the specific OAT indicators, priority indicators included 'coverage', 'waiting list time', 'dosage' and 'availability in prisons'. For the specific NSP indicators, the priority indicators included 'coverage', 'number of needles/syringes distributed/collected', 'provision of other drug use paraphernalia' and 'availability in prisons'. Among the generic or cross-cutting indicators the priority indicators were 'infectious diseases counselling and care', 'take away naloxone', 'information on safe use/sex' and 'condoms'. We discuss conditions for the successful development of the suggested indica

Published
2017

118. The perception of land reclamation within viticultural landscapes as a method of promoting and supporting local economic activities

Author

Hoble, Adela, Bunea, C.L., Popescu, D., Cluzeau, Daniel, Burel, Françoise, Guernion, Muriel, Nicolai, Annegret, Fertil, Albin, Winter, Silvia, Kratschmer, Sophie, Zaller, Johann G., Guzmán, G., Department of Land Measurements and Science, University of Agricultural Sciences and Veterinary Medicine, Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), University of Natural Resources and Life Sciences [Wien] (BOKU), Université médicale de Vienne, Autriche, ANR-14-EBID-0006,VineDivers,Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe(2014), Université de Rennes (UR), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), Briand, Valerie, and BiodivERsA/FACCE-JPI - Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe - - VineDivers2014 - ANR-14-EBID-0006 - EBID/JFAC - VALID

Subjects
[SDE.BE] Environmental Sciences/Biodiversity and Ecology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

119. Land cover typology using geographic information systems for viticultural landscape

Author

Hoble, Adela, Popescu, D., Bunea, C.L., Burel, Françoise, Guernion, Muriel, Nicolai, Annegret, Fertil, Albin, Winter, Silvia, Kratschmer, Sophie, Zaller, Johann G., Guzmán, G., Potthoff, Martin, Department of Land Measurements and Science, University of Agricultural Sciences and Veterinary Medicine, Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes 1 (UR1), University of Natural Resources and Life Sciences [Wien] (BOKU), Université médicale de Vienne, Autriche, Centre of Biodiversity and Sustainable Land Use, University of Göttingen - Georg-August-Universität Göttingen, ANR-14-EBID-0006,VineDivers,Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe(2014), Briand, Valerie, BiodivERsA/FACCE-JPI - Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe - - VineDivers2014 - ANR-14-EBID-0006 - EBID/JFAC - VALID, Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR), Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), Centre for Biodiversity and Sustainable Land-use [University of Göttingen] (CBL), and Georg-August-University = Georg-August-Universität Göttingen

Subjects
[SDE.BE] Environmental Sciences/Biodiversity and Ecology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

120. CLASIC VERSUS NOVEL IN REDUCTION OF ACUTE ANTERIOR DISLOCATION OF THE SHOULDER: A COMPARISON OF FOUR REDUCTION TECHNIQUES

Author

Puha, B., Gheorghevici, T. S., Bogdan Veliceasa, Popescu, D., and Alexa, O.

Subjects
Adult, Aged, 80 and over, Male, Midazolam, Shoulder Dislocation, Middle Aged, Analgesics, Opioid, Fentanyl, Treatment Outcome, Humans, Hypnotics and Sedatives, Manipulation, Orthopedic, Female, Aged, Retrospective Studies
Abstract

The purpose of our study is to compare four different techniques for reduction shoulder dislocation in term of efficacy, duration until reduction and pain felt by patient during the procedure.During 2015 year, we conducted a study on 50 chronological patients with anterior shoulder dislocation. After exclusion of four patients, the remaining 46 (74% males, mean age 44.6 +/- 20.03 years, range 18 to 89) were randomly assigned in four groups and reduced by Cunningham (C), Kocher (K), Mothes (M) and Hipocrat (H) techniques. All the patients were sedated using Midazolam (2 mg) and Fentanyl (1 microg/kgbw) except patients who underwent Cunningham technique.The success rate was 76.9% in C group, 98.4% in K group, 90.2% in M group and 87.96% in H group (p0.05). The level of pain in C group was similar to the other groups in the absence of pain medication (p0.05).Cunningham technique is a simple, single person technique, drug free, less painful and safer, comparable with other "classical" methods.

Published
2016

121. Ecosystem services and soil biodiversity in French vineyards

Author

Nicolai, Annegret, Guernion, Muriel, Cluzeau, Daniel, Gómez, J.A., Guzmán, G., Strauss, Peter, Popescu, D., Hoble, Adela, Bunea, C.L., Potthoff, Martin, Bergman, H., Winter, Silvia, Zaller, Johann G., Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes 1 (UR1), Universidad Industrial de Santander [Bucaramanga] (UIS), ISET e.V., Department of Land Measurements and Science, University of Agricultural Sciences and Veterinary Medicine, Centre of Biodiversity and Sustainable Land Use, University of Göttingen - Georg-August-Universität Göttingen, University of Natural Resources and Life Sciences [Wien] (BOKU), Université médicale de Vienne, Autriche, ANR-14-EBID-0006,VineDivers,Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe(2014), Briand, Valerie, BiodivERsA/FACCE-JPI - Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe - - VineDivers2014 - ANR-14-EBID-0006 - EBID/JFAC - VALID, Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR), Centre for Biodiversity and Sustainable Land-use [University of Göttingen] (CBL), Georg-August-University = Georg-August-Universität Göttingen, and Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU)

Subjects
[SDE.BE] Environmental Sciences/Biodiversity and Ecology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

122. Horizon line detection from fisheye images using color local image region descriptors and Bhattacharyya coefficient-based distance

Author

El merabet, Y., Ruicheck, Y., Ghaffarian, S., Samir, Z., Boujiha, T., Touahni, R., Messoussi, R., Blanc-Talon, J., Distante, C., Philips, W., Popescu, D., Scheunders, P., and Department of Earth Systems Analysis

Subjects
Contextual image classification, business.industry, Computer science, media_common.quotation_subject, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, 020206 networking & telecommunications, Pattern recognition, 02 engineering and technology, Image segmentation, METIS-321271, GNSS applications, Robustness (computer science), Sky, Computer Science::Computer Vision and Pattern Recognition, 0202 electrical engineering, electronic engineering, information engineering, Bhattacharyya distance, 020201 artificial intelligence & image processing, Segmentation, Satellite navigation, Computer vision, Artificial intelligence, business, media_common
Abstract

Several solutions allowing to compensate the lack of performance of GNSS (Global Navigation Satellites Systems) occurring when operating in constrained environments (dense urbain areas) have emerged in recent years. Characterizing the environment of reception of GNSS signals using a fisheye camera oriented to the sky is one of these relevant solutions. The idea consists in determining LOS (Line-Of-Sight) satellites and NLOS (Nonline-Of-Sight) satellites by classifying the content of acquired images into two regions (sky and not-sky). In this paper, aimed to make this approach more effective, we propose a region-based image classification technique through Bhattacharyya coefficient-based distance and local image region descriptors. The proposed procedure is composed of four major steps: (i) A simplification step that consists in simplifying the acquired image with an appropriate couple of colorimetric invariant and exponential transform. (ii) The second step consists in segmenting the simplified image in different regions of interest using Statistical Region Merging segmentation method. (iii) In the third step, the segmented regions are characterized with a number of local color image region descriptors. (iv) The fourth step introduces the supervised \(\mathcal {MSRC}\) (Maximal Similarity Based Region Classification) method by using Bhattacharyya coefficient-based distance to classify the characterized regions into sky and non sky regions. Experimental results prove the robustness and performance of the proposed procedure according to the proposed group of color local image region descriptors.

Published
2016
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123. Effects of vineyard intensity on – insights from a meta-analysis

Author

Winter, Silvia, Zaller, Johann G., Bauer, Thomas, Kratschmer, Sophie, Popescu, D., Strauss, Peter, Paredes, Daniel, Guzmán, G., Gómez, J.A., Landa, B., Nicolai, Annegret, Guernion, Muriel, Batáry, P., Briand, Valerie, BiodivERsA/FACCE-JPI - Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe - - VineDivers2014 - ANR-14-EBID-0006 - EBID/JFAC - VALID, University of Natural Resources and Life Sciences [Wien] (BOKU), Université médicale de Vienne, Autriche, GFI Informatique, ISET e.V., Instituto de Matematica [Valparaiso] (IMA - PUCV ), Pontificia Universidad Católica de Valparaíso (PUCV), Universidad Industrial de Santander [Bucaramanga] (UIS), Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes 1 (UR1), Projet Biodiversa 'VineDivers', ANR-14-EBID-0006,VineDivers,Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe(2014), Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), and Université de Rennes (UR)

Subjects
[SDE.BE] Environmental Sciences/Biodiversity and Ecology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

124. How does vineyard management intensity affect ecosystem services and disservices - insight from a meta-analysis

Author

Winter, Silvia, Zaller, Johann G., Kratschmer, Sophie, Pachinger, Bärbel, Strauss, Peter, Bauer, Thomas, Paredes, Daniel, Gomez, J.A., Landa, B., Nicolai, Annegret, Burel, Françoise, Cluzeau, Daniel, Popescu, D., Bunea, C.I., Potthoff, Martin, Guernion, Muriel, Batary, P., Briand, Valerie, University of Natural Resources and Life Sciences [Wien] (BOKU), Université médicale de Vienne, Autriche, ISET e.V., Instituto de Matematica [Valparaiso] (IMA - PUCV ), Pontificia Universidad Católica de Valparaíso (PUCV), Universidad Industrial de Santander [Bucaramanga] (UIS), Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes 1 (UR1), GFI Informatique, Centre of Biodiversity and Sustainable Land Use, University of Göttingen - Georg-August-Universität Göttingen, Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR), Centre for Biodiversity and Sustainable Land-use [University of Göttingen] (CBL), and Georg-August-University = Georg-August-Universität Göttingen

Subjects
[SDE.BE] Environmental Sciences/Biodiversity and Ecology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Abstract

EGU2016-1769; International audience

Published
2016

127. Detection of human groups in videos

Author

Sandikci, S., Zinger, S., With, de, P.H.N., Blanc-Talon, J., Kleihorst, R., Philips, W., Popescu, D., Scheunders, P., Signal Processing Systems, Adaptive array signal processing, and Biomedical Diagnostics Lab

Subjects
Collective behavior, Basis (linear algebra), business.industry, Group (mathematics), Frame (networking), Pattern recognition, Function (mathematics), Hierarchical clustering, Similarity (network science), Artificial intelligence, business, Cluster analysis, Simulation, Mathematics
Abstract

In this paper, we consider the problem of finding and localizing social human groups in videos, which can form a basis for further analysis and monitoring of groups in general. Our approach is motivated by the collective behavior of individuals which has a fundament in sociological studies. We design a detection-based multi-target tracking framework which is capable of handling short-term occlusions and producing stable trajectories. Human groups are discovered by clustering trajectories of individuals in an agglomerative fashion. A novel similarity function related to distances between group members, robustly measures the similarity of noisy trajectories. We have evaluated our approach on several test sequences and achieved acceptable miss rates (19.4%, 29.7% and 46.7%) at reasonable false positive detections per frame (0.129, 0.813 and 0.371). The relatively high miss rates are caused by a strict evaluation procedure, whereas the visual results are quite acceptable.

Published
2011
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128. Warren Buffett, the intelligent investor

Author

Popescu, D.

Subjects
lcsh:HB1-3840, political decline, economic and financial crisis, lcsh:HB71-74, lcsh:Economic theory. Demography, lcsh:Economics as a science, investment, business environment
Abstract

Starting from the difficult economic conditions in Romania, the paper identifies the qualities of an intelligent investor on the background of the economic and financial crisis by presenting Warren Buffet’s strategy and action in the recent times. The conclusion is that Warren Buffet remains in the economic history as the most atypical capitalist that Americans have ever had and his behaviour could be successfully followed by the Romanian business men.

Published
2010

129. International financial crises - chance for Romania

Author

Popescu, D. and Gabor, S.

Subjects
lcsh:HB1-3840, PPP, restructure, lcsh:HB71-74, domestic economic crisis, lcsh:Economic theory. Demography, lcsh:Economics as a science, European fund absorption
Abstract

The international financial crisis can be a real chance for Romania. The international financial crisis has served to reveal the true and deep domestic economic crisis. Face to face with the real situation, using the European funds at full, the alternative financial support such as PPP, the particular natural and human potential, Romania could became the best in its historically traditional successful fields (such as agriculture) and position on innovative fields (such as high technologies of transport, new energy sources, research and development) by burning steps of development. This paper presents the present economic situation, what the unused tools are, what is the opportunity and what monetary and fiscal policies can do.

Published
2010

130. A comparative study between MP and DLQ control strategies for a flexible link

Author

Soimu, A., Florin Stinga, and Popescu, D.

Subjects
DLQR, lcsh:TN1-997, lcsh:Geology, MPC, Optimal Control, lcsh:QE1-996.5, Quanser Flexible Link, lcsh:Mining engineering. Metallurgy
Abstract

In this paper we developed a control scheme for a Quanser Flexible Link experiment. The purpose of the paper is to designa controller which reduces (eliminates) the undamped oscillations of the tip of the beam while commanding the tip to a desired position.First, we design a control scheme with a model predictive controller. Model predictive control (MPC) is a well-known technique usedto (sub)optimally control of dynamical processes. Then, we design a Digital Linear Quadratic Regulator (DLQR) and we comparethe results obtained by MPC scheme with those obtained by using the DLQR control scheme.

Published
2010

131. Video quality analysis for concert video mashup generation

Author

Shrestha, P., Weda, J., Barbieri, M., With, de, P.H.N., Blanc-Talon, J., Bone, D., Philips, W., Popescu, D., Scheunders, P., Signal Processing Systems, and Signal transforms and filter banks

Subjects
Multimedia, Computer science, business.industry, media_common.quotation_subject, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Video processing, Video quality, computer.software_genre, Synchronization, Metric (mathematics), Quality (business), Mashup, Computer vision, Artificial intelligence, PEVQ, InformationSystems_MISCELLANEOUS, business, computer, Subjective video quality, media_common
Abstract

Videos recorded by the audience in a concert provide natural and lively views from different angles. However, such recordings are generally incomplete and suffer from low signal quality due to poor lighting conditions and use of hand-held cameras. It is our objective to create an enriched video stream by combining high-quality segments from multiple recordings, called mashup. In this paper, we describe techniques for quality measurements of video, such as blockiness, blurriness, shakiness and brightness. These measured values are merged into an overall quality metric that is applied to select high-quality segments in generating mashups. We compare our mashups, generated using the quality metric for segment selection, with manually and randomly created mashups. The results of a subjective evaluation show that the perceived qualities of our mashups and the manual mashups are comparable, while they are both significantly higher than the random mashups.

Published
2010
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132. Evaluation of interest point detectors for non-planar, transparent scenes

Author

Papalazarou, C., Rongen, P.M.J., With, de, P.H.N., Blanc-Talon, J., Philips, W., Popescu, D., Scheunders, P., and Signal Processing Systems

Subjects
Computer science, business.industry, Detector, Imaging phantom, Field (computer science), Interest point detection, Planar, Feature (computer vision), Computer Science::Computer Vision and Pattern Recognition, Point (geometry), Computer vision, Artificial intelligence, Transparency (data compression), business
Abstract

The detection of stable, distinctive and rich feature point sets has been an active area of research in the field of video and image analysis. Transparency imaging, such as X-ray, has also benefited from this research. However, an evaluation of the performance of various available detectors for this type of images is lacking. The differences with natural imaging stem not only from the transparency, but -in the case of medical X-ray- also from the non-planarity of the scenes, a factor that complicates the evaluation. In this paper, a method is proposed to perform this evaluation on non-planar, calibrated X-ray images. Repeatability and accuracy of nine interest point detectors is demonstrated on phantom and clinical images. The evaluation has shown that the Laplacian-of-Gaussian and Harris-Laplace detectors show overall the best performance for the datasets used.

Published
2009
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133. A propagation tool to connect remote-sensing observations with in-situ measurements of heliospheric structures

Author

Rouillard, A.P., primary, Lavraud, B., additional, Génot, V., additional, Bouchemit, M., additional, Dufourg, N., additional, Plotnikov, I., additional, Pinto, R.F., additional, Sanchez-Diaz, E., additional, Lavarra, M., additional, Penou, M., additional, Jacquey, C., additional, André, N., additional, Caussarieu, S., additional, Toniutti, J.-P., additional, Popescu, D., additional, Buchlin, E., additional, Caminade, S., additional, Alingery, P., additional, Davies, J.A., additional, Odstrcil, D., additional, and Mays, L., additional

Published
2017
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135. Interlinkages between biodiversity, ecosystem services and socio-economics in vineyards (BiodivERsA project VineDivers)

Author

Zaller, Johann G., Winter, Silvia, Strauss, Peter, Bauer, Thomas, Querner, Pascal, Buchholz, Jacob, Kriechbaum, Monika, Pachinger, Bärbel, Kratschmer, Sophie, Gomez, J., Campos, M., Landa, B., Paredes, Daniel, Popescu, D., Comsa, M., Iliescu, M.L., Tomoiaga, L.L., Bunea, C.I., Hoble, Adela, Marghitas, L.A., Rusu, T., Lora, A., Guzman, G., Bergmann, H., Potthoff, Martin, Schütte, R., Cluzeau, Daniel, Burel, Françoise, Nicolai, Annegret, Guernion, Muriel, Jung, Vincent, Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), ISET e.V., Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Centre National de la Recherche Scientifique (CNRS), Instituto de Matematica [Valparaiso] (IMA - PUCV ), Pontificia Universidad Católica de Valparaíso (PUCV), Department of Land Measurements and Science, University of Agricultural Sciences and Veterinary Medicine, Dpto. de Ingeniería Forestal, ETSIAM, Universidad de Córdoba [Cordoba], Centre of Biodiversity and Sustainable Land Use, University of Göttingen - Georg-August-Universität Göttingen, Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), ANR-14-EBID-0006,VineDivers,Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe(2014), University of Natural Resources and Life Sciences [Wien] (BOKU), Université médicale de Vienne, Autriche, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Briand, Valerie, BiodivERsA/FACCE-JPI - Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe - - VineDivers2014 - ANR-14-EBID-0006 - EBID/JFAC - VALID, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Universidad de Córdoba = University of Córdoba [Córdoba], Centre for Biodiversity and Sustainable Land-use [University of Göttingen] (CBL), Georg-August-University = Georg-August-Universität Göttingen, Université de Rennes (UR), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), and Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDE.BE] Environmental Sciences/Biodiversity and Ecology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

136. BiodivERsA project VineDivers: Analysing interlinkages between soil biota and biodiversity-based ecosystem services in vineyards across Europe

Author

Zaller, Johann G., Winter, Silvia, Strauss, Peter, Querner, Pascal, Kriechbaum, Monika, Pachinger, Bärbel, Gomez, J.A., Campos, M., Landa, B., Popescu, D., Comsa, B., Iliescu, M., Tomoiaga, L., Bunea, C.I., Hoble, Adela, Marghitas, L.A., Rusu, T., Lora, A., Guzman, G., Bergmann, H., Potthoff, Martin, Cluzeau, Daniel, Burel, Françoise, Jung, Vincent, Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), ISET e.V., Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Department of Land Measurements and Science, University of Agricultural Sciences and Veterinary Medicine, Dpto. de Ingeniería Forestal, ETSIAM, Universidad de Córdoba = University of Córdoba [Córdoba], Centre for Biodiversity and Sustainable Land-use [University of Göttingen] (CBL), Georg-August-University = Georg-August-Universität Göttingen, Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes (UR), VineDivers, ANR-14-EBID-0006,VineDivers,Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe(2014), University of Natural Resources and Life Sciences [Wien] (BOKU), Université médicale de Vienne, Autriche, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Universidad de Córdoba [Cordoba], Centre of Biodiversity and Sustainable Land Use, University of Göttingen - Georg-August-Universität Göttingen, Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Université de Rennes 1 (UR1), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut Ecologie et Environnement (INEE), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Briand, Valerie, University of Natural Resources and Life Sciences (BOKU), Universidad Industrial de Santander [Bucaramanga] (UIS), Carlos III University of Madrid, Spanish National Research Council (CSIC), and BiodivERsA/FACCE-JPI - Biodiversity-based ecosystem services in vineyards: analysing interlinkages between plants, pollinators, soil biota and soil erosion across Europe - - VineDivers2014 - ANR-14-EBID-0006 - EBID/JFAC - VALID

Subjects
[SDE.BE] Environmental Sciences/Biodiversity and Ecology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

137. Solidarity filter for noise reduction of 3D edges in depth images

Author

Javan Hemmat, Hani, Bondarau, Egor, de With, Peter H. N., Battiato, S., Blanc-Talon, J., Gallo, G., Philips, W., Popescu, D., Scheunders, P., and Video Coding & Architectures

Subjects
Pixel, business.industry, Noise reduction, Salt-and-pepper noise, dblp, Peak signal-to-noise ratio, Noise, Filter (video), Computer Science::Computer Vision and Pattern Recognition, Metric (mathematics), Median filter, Computer vision, Artificial intelligence, business, Algorithm, Mathematics
Abstract

3D applications processing depth images significantly benefit from 3D-edge extraction techniques. Intrinsic sensor noise in depth images is largely inherited to the extracted 3D edges. Conventional denoising algorithms remove some of this noise, but also weaken narrow edges, amplify noisy pixels and introduce false edges. We therefore propose a novel solidarity filter for noise removal in 3D edge images without artefacts such as false edges. The proposed filter is defining neighbouring pixels with similar properties and connecting those into larger segments beyond the size of a conventional filter aperture. The experimental results show that the solidarity filter outperforms the median and morphological close filters with $$42\,\%$$ and $$69\,\%$$ higher PSNR, respectively. In terms of the mean SSIM metric, the solidarity filter provides results that are $$11\,\%$$ and $$21\,\%$$ closer to the ground truth than the corresponding results obtained by the median and close filters, respectively.

Published
2015

138. Усовершенствование дифференциации артериальных тканей с помощью спектроскопической оптической когерентной томографии

Author

Flueraru, C., Popescu, D., Mao, Y., Chang, S., Sowa, M., and Vitkin, A.

Subjects
ОПТИЧЕСКАЯ КОГЕРЕНТНАЯ ТОМОГРАФИЯ,КОЛИЧЕСТВЕННЫЙ И СПЕКТРАЛЬНЫЙ АНАЛИЗ,КРОЛИКИ WHLMI, optical coherence tomography, quantitative and spectral analysis, WHH LMI rabbits
Abstract

Оптическая когерентная томография (ОКТ) это относительно новый способ визуализации, схожий с ультразвуком, где вместо звуковых волн используются баллистические фотоны. ОКТ создает изображения с высоким пространственным разрешением, которое отражает микронную морфологическую структуру ткани. Ее важное применение визуализация артериальной стенки и атеросклеротических бляшек. Несмотря на высокое пространственное разрешение, для того чтобы перенести этот способ визуализации в клинические условия, требуются маркеры, которые бы количественно характеризовали физиологическое состояние ткани. Поиск соответствующих маркеров является актуальной темой для многих исследовательских групп. Потенциальный маркер, предложенный исследователями ОКТ, это оптический коэффициент затухания сигнала. Хотя ОКТ-изображение само по себе предоставляет важную диагностическую и структурную информацию, существуют также и новые методы характеризации тканей, включая количественную обработку ОКТ-сигнала и спектроскопическую ОКТ. Спектроскопическая ОКТ использует спектральный отклик, тогда как количественная обработка ОКТ-сигнала использует неспектральные параметры. В настоящей работе мы изучили два способа оценки зависимости оптического коэффициента затухания сигнала от длины волны. Анализ длины волны дает новое представление о химической природе образца, поскольку обратно рассеянный спектральный сигнал зависит от поглощающих и рассеивающих свойств ткани. В настоящем исследовании мы показали применение ОКТ для количественного и спектрального анализа морфологии нестабильных бляшек на модели кроликов с наследственным гиперлипидемическим инфарктом миокарда Watanabe. Результаты говорят, что спектральную зависимость коэффициента затухания ОКТ-сигнала можно использовать для оценки состояния ткани кровеносных сосудов. Мы продемонстрировали, что спектральная зависимость коэффициента затухания связана с содержанием макрофагов в области атеросклеротической бляшки., Optical coherence tomography (OCT ) is a relatively new imaging modality similar with ultrasound where the sound waves are replaced by ballistic photons. OCT provides images at high spatial resolution which allow for the identification of micron size morphological tissue structures. A high impact application is visualization of arterial wall and atherosclerotic plaques. Despite high spatial resolution to complete the transfer of this imaging modality into clinical environment there is a need for markers which would quantify the physiological condition of the sample. Finding the proper markers is a topic of high interest for many research groups. A potential marker suggested by the OCT community is the optical attenuation coefficient. Although OCT image itself provides important diagnostic and structural information there are also new methods of tissue characterization that have been developed through spectroscopic OCT and quantitative OCT . Spectroscopic OCT investigates the spectral response while the quantitative OCT extends the investigation to non-spectral parameters. Here we investigate two procedures for calculation of optical attenuation coefficient dependence versus wavelength. The wavelength analysis will provide new insight into the chemical nature of the sample, because the spectral backreflected signal depends on sample absorption and scattering properties. In this study we demonstrate the application of OCT for quantitative and spectral analysis of vulnerable plaque morphology on Watanabe heritable hyperlipidemic – myocardial infarction (WHH LMI) rabbit model. The results suggest that the spectral dependence of the derived OCT attenuation coefficient can be used for tissue differentiation. We demonstrated that differences and the spectral dependence of the optical attenuation coefficient are linked to the macrophage content of the region of interest.

Published
2015

139. Effects of inter-raw management intensity on wild bees in Austrian, Spanish, French and Romanian vineyards

Author

Kratschmer, Sophie, Pachinger, Bärbel, Paredes, Daniel, Guzman, G., Nicolai, Annegret, Favreau, M., Popescu, D., Bunea, C.I., Florian, C., Winter, Silvia, Briand, Valerie, Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), Instituto de Matematica [Valparaiso] (IMA - PUCV ), Pontificia Universidad Católica de Valparaíso (PUCV), Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes (UR), Centre de Recherches Interdisciplinaires en Sciences humaines et Sociales de Montpellier (CRISES), Université Paul-Valéry - Montpellier 3 (UPVM), Eberswalde University for Sustainable Development (HNE), German Zoological Society, University of Natural Resources and Life Sciences [Wien] (BOKU), Université médicale de Vienne, Autriche, Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Centre National de la Recherche Scientifique (CNRS), and Université Paul-Valéry - Montpellier 3 (UM3)

Subjects
[SDE.BE] Environmental Sciences/Biodiversity and Ecology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

141. Surface roughness measuring in case of electro-erosion processed work pieces.

Author

Popescu, D. and Geonea, I.

Subjects
SURFACE roughness, WORK in process, MANUFACTURING processes, MACHINING, MATERIAL erosion
Abstract

Electroerosion is a manufacturing process for working difficult to machine materials. The paper describes a miniature punching die for perforation and cutting obtained from X15 using electro-erosion. This type of material cannot be processed using regular technologies because of its properties such as high hardness and complexity as well as protection against superficial layer damage. The manufacturing process provides a high quality and dimensional precision of the finished product. It is presented a digital surface roughness meter and the functional schematic of the PGI system. Also there are presented different roughness measurement variants as well as the graphical representation and the bearing area curve. There are emphasized the variations of the parameters in the 4 measurement points as well as the variation of the c coefficient. Finally the Ra, Rq and Rz parameters are analysed. [ABSTRACT FROM AUTHOR]

Published
2019

145. Employee Aggression, Labeling and Emotional Intelligence

Author

Martin Popescu D. Dana Maria

Subjects
Aggression, CWB, labeling, emotional intelligence
Abstract

The aims of this research are to broaden the study on the relationship between emotional intelligence and counterproductive work behavior (CWB). The study sample consisted in 441 Romanian employees from companies all over the country. Data has been collected through web surveys and processed with SPSS. The results indicated an average correlation between the two constructs and their sub variables, employees with a high level of emotional intelligence tend to be less aggressive. In addition, labeling was considered an individual difference which has the power to influence the level of employee aggression. A regression model was used to underline the importance of emotional intelligence together with labeling as predictors of CWB. Results have shown that this regression model enforces the assumption that labeling and emotional intelligence, taken together, predict CWB. Employees, who label themselves as victims and have a low degree of emotional intelligence, have a higher level of CWB.

Published
2014
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146. Adaptive Image Content-Based Exposure Control for Scanning Applications in Radiography

Author

Schulerud, H., Thielemann, J., Kirkhus, T., Kaspersen, K., Østby, J.M., Metaxas, M.G., Royle, G.J., Griffiths, J., Cook, E., Esbrand, C., Pani, S., Venanzi, C., van der Stelt, P.F., Li, G., Turchetta, R., Fant, A., Theodoridis, S., Georgiou, H., Hall, G., Noy, M., Jones, J., Leaver, J., Triantis, F., Asimidis, A., Manthos, N., Longo, R., Bergamaschi, A., Speller, R.D., Blanc-Talon, J., Philips, W., Popescu, D., Scheunders, P., Orale Radiologie (OUD, ACTA), Schulerud, H, Thielemann, J, Kirkhus, T, Kaspersen, K, ØSTBY J., M, METAXAS M., G, ROYLE G., J, Griffiths, J, Cook, E, Esbrand, C, Pani, S, Venanzi, C, VAN DER STELT P., F, Gang, L, Turchetta, R, Fant, A, Theodoridis, S, Georgiou, H, Hall, G, Noy, M, Jones, J, Leaver, J, Triantis, F, Asimidis, A, Manthos, N, Longo, Renata, Bergamaschi, A, Speller, R. D., Blanc-Talon, J., Philips, W., Popescu, D., and Scheunders, P.

Subjects
medicine.diagnostic_test, Computer science, Image quality, business.industry, Radiography, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Image content, Visualization, medicine, Mammography, Computer vision, Exposure control, Artificial intelligence, business
Abstract

I-ImaS (Intelligent Imaging Sensors) is a European project which has designed and developed a new adaptive X-ray imaging system using on-line exposure control, to create locally optimized images. The I-ImaS system allows for real-time image analysis during acquisition, thus enabling real-time exposure adjustment. This adaptive imaging system has the potential of creating images with optimal information within a given dose constraint and to acquire optimally exposed images of objects with variable density during one scan. In this paper we present the control system and results from initial tests on mammographic and encephalographic images. Furthermore, algorithms for visualization of the resulting images, consisting of unevenly exposed image regions, are developed and tested. The preliminary results show that the same image quality can be achieved at 30-70% lower dose using the I-ImaS system compared to conventional mammography systems.

Published
2007
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147. Acroplate – a modern solution for the treatment of acromioclavicular joint dislocation

Author

Cîrstoiu, C., Rǎdulescu, R., Popescu, D., Ene, R., Circotǎ, G., and Bǎdiceanu, C.

Subjects
Male, pins, dislocation, Shoulder Joint, Shoulder Dislocation, Original Articles, Equipment Design, Surgical Instruments, Radiography, Young Adult, place, motion, Athletic Injuries, Humans, Female, osteosynthesis
Abstract

Two main ways to fix the reduction were imposed in surgical treatment of the acromioclavicular joint dislocations: fixation with trans acromioclavicular pin (Phemister method) and fixation with plate and screws type acroplate. The purpose of the present paper work is to compare immediate and later postoperative results between the two types of surgical interventions. During 2005-2007, 37 surgical reductions and fixation of acromioclavicular joint dislocations were performed in the Orthopedic-Traumatology Clinic of SUUB. In 17 cases a fixation with screws and plates type acroplate has been performed and in 20 cases with pins using the Phemister method. Sex ratio: 31 men and 8 women. Patients were aged between 17 and 56 years old. Follow up at 6 weeks, 3, 6, 12 and 18 post-operatory months. Osteosintesis material removing was done postoperatively, at 4 weeks in case of acroplate's and at 6 weeks in case of the pins. All patients treated of fixation with plate and screws acroplate type had a favorable evolution/development, starting with the shoulder joint mobilization at 24 hours postoperatively, with a complete recovery 4 weeks after the operation, at the same time with the ablation, and without immediate other late complications. As far as the patients treated by using the Phemister method are concerned, they were applied an immobilization, postoperatively. Desault bandage or the scarf for a period between 1 and 3 weeks, beginning with the shoulder joint mobilization later on and a full recovery after a minimum of 6 weeks. However, 3 of the cases showed a migration of one or both pins. Following the study, a more rapid recovery resulted, complete, and without complications of mobility in the shoulder joint, when using plate type acroplate vs pin.

Published
2009

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