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apps Other research product2021 France EnglishPublisher:Association for Computing Machinery - ACM Authors: GRAMAGLIA, Marco; FIORE, Marco; FURNO, Angelo; STANICA, RAZVAN;GRAMAGLIA, Marco; FIORE, Marco; FURNO, Angelo; STANICA, RAZVAN;Datasets of mobile phone trajectories collected by network operators offer an unprecedented opportunity to discover new knowledge from the activity of large populations of millions. However, publishing such trajectories also raises significant privacy concerns, as they contain personal data in the form of individual movement patterns. Privacy risks induce network operators to enforce restrictive confidential agreements in the rare occasions when they grant access to collected trajectories, whereas a less involved circulation of these data would fuel research and enable reproducibility in many disciplines. In this work, we contribute a building block towards the design of privacy-preserving datasets of mobile phone trajectories that are truthful at the record level. We present GLOVE, an algorithm that implements k-anonymity, hence solving the crucial unicity problem that affects this type of data while ensuring that the anonymized trajectories correspond to real-life users. GLOVE builds on original insights about the root causes behind the undesirable unicity of mobile phone trajectories, and leverages generalization and suppression to remove them. Proof-of-concept validations with large-scale real-world datasets demonstrate that the approach adopted by GLOVE allows preserving a substantial level of accuracy in the data, higher than that granted by previous methodologies.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::bc23cbb72ed6027d7e63cfa408968c74&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 FrancePublisher:Pétrole Éditions Authors: L'HOSTIS, Alain; BARBIER, Jean-François;L'HOSTIS, Alain; BARBIER, Jean-François;La représentation de l'espace-temps géographique est une des fonctions essentielles de la cartographie, dès ses premières occurrences connues chez les Égyptiens, mais qui a fait l'objet de plusieurs tentatives pour dépasser les limites des cartes classiques. C'est l'objectif de la proposition de Philippe Mathis en 1990 qui repose sur des principes de représentation des réseaux de transport sur une surface géographique déformée dans les trois dimensions. C'est ce modèle que j'ai mis en images à partir du milieu des années 1990 et que je continue à développer en raison de la complexité de sa mise en oeuvre, de sa situation à la frontière de champs disciplinaires différents - cartographie, visualisation scientifique, jeu vidéo, et de la profondeur de la remise en question de nos représentations de l'espace qu'il porte. Nous présentons ici le parcours de ce modèle, depuis son énoncé initial, sa mise en oeuvre graphique, jusqu'à la dynamique de collaboration actuelle.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::7a6d89a2fbdf719bff0600afdcc632ca&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:IWA publishing Authors: LARRARTE, Frédérique; LEPOT, Mathieu; CLEMENS-MEYER, François; BERTRAND-KRAJEWSKI, Jean Luc; +3 AuthorsLARRARTE, Frédérique; LEPOT, Mathieu; CLEMENS-MEYER, François; BERTRAND-KRAJEWSKI, Jean Luc; IVETIC, Damjan; PRODANOVIC, Dusan; STEGEMAN, Bram;La connaissance des niveaux d'eau et des rejets dans les systèmes de drainage urbain et de gestion des eaux pluviales (UDSM) est d'une importance capitale pour comprendre leur fonctionnement et leurs processus, pour évaluer leurs performances et pour fournir des données pour la modélisation. Dans ce chapitre, consacré principalement aux réseaux souterrains d'égouts unitaires et séparatifs, diverses méthodes et technologies sont décrites et discutées. Après une introduction aux aspects importants à prendre en compte lors de la mesure des rejets dans les réseaux d'égouts, les parties suivantes sont présentées successivement : (i) mesure du niveau d'eau à l'aide de règles, de capteurs de pression, d'ultrasons et de radars, (ii) mesure de la vitesse d'écoulement à l'aide de capteurs à ultrasons, Doppler, profileurs de vitesse, à surface libre et électromagnétiques, (iii) mesure directe du débit à l'aide d'appareils pré-calibrés, de modèles à l'échelle physique, de modélisation numérique de la dynamique des fluides et de l'utilisation de stations de pompage, et (iv) détection et/ou mesure de l'infiltration et de l'exfiltration dans les égouts, à l'aide de mesures de débit ou de pression, d'expériences de traçage, de détection de la température distribuée et de méthodes géophysiques.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::601b080d5320f8678b2f8c51e4b60b6d&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:Multidisciplinary Digital Publishing Institute - MDPI Authors: SKIRIBOU, Camelia; ELBAHHAR, Fouzia;SKIRIBOU, Camelia; ELBAHHAR, Fouzia;Signal identification is of great interest for various applications such as spectrum sharing and interference management. A typical signal identification system can be divided into two steps. A feature vector is first extracted from the received signal, then a decision is made by a classification algorithm according to its observed values. Some existing techniques show good performance but they are either sensitive to noise level or have high computational complexity. In this paper, a machine learning algorithm is proposed for the identification of vehicular communication signals. The feature vector is made up of Instantaneous Frequency (IF) resulting from time-frequency (TF) analysis. Its dimension is then reduced using the Singular Value Decomposition (SVD) technique, before being fed into a Random Forest classifier. Simulation results show the relevance and the low complexity of IF features compared to existing cyclostationarity-based ones. Furthermore, we found that the same accuracy can be maintained regardless of the noise level. The proposed framework thus provides a more accurate, robust and less complex V2X signal identification system.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::0a9233b13cf6887a57d5d1397a9b14d2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:SPRINGER LIU, Yichun; SULEM, Jean; SUBRIN, Didier; TRAN- MANH, Huy; HUMBERT, Emmanuel;A squeezing Carboniferous formation was met at a depth of 300 m during the excavation of the Saint-Martin-la-Porte access gallery (SMP2) in France within the Lyon-Turin railway link project. Large, time-dependent and anisotropic deformation was observed around the tunnel wall during and after excavation, and difficulties related to tunneling in squeezing ground have been encountered. An anisotropic visco-elastic plastic constitutive law (Tran- Manh et al. 2015) has been proposed in order to model the ground behavior. This model was validated by field auscultation carried out in SMP2. As a part of the base tunnel, a new survey gallery (SMP4) began to be excavated in the recent years across the same squeezing rock formation at a depth of about 600 m. A yield control support system was adopted in the zones of large deformation, which contains highly deformable concrete elements to stabilize the high convergence (Bonini and Barla 2012). In the present work, the studies of SMP2 are extended to SMP4 by considering the constitutive model developed for SMP2. The innovative excavation and support method is taken into account. Numerical modeling is performed using FLAC3D to analyze the tunnel response. A good agreement can be obtained between the field measurements and the numerical results.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::ddf0b1c15014f65c91d0c51d1ebc5e43&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:Elsevier BV Authors: ASSILA, Najoua; DUPREY, Sonia; BEGON, Mickaël;ASSILA, Najoua; DUPREY, Sonia; BEGON, Mickaël;The mobility of the healthy shoulder depends on complex interactions between the muscles spanning its glenohumeral joint. These interactions ensure the stability of this joint. While previous studies emphasized the complexity of the glenohumeral stability, it is still not clear how the kinematics and muscles interact and adapt to ensure a healthy function of the glenohumeral joint. To understand the function of each muscle and degree of freedom of the glenohumeral joint in executing an above-the shoulder box handling task while ensuring stability, we adapted an index-based approach previously used to characterize the functions of the lower limb joints and muscles during locomotion. Forty participants lifted two loads (6 Vs. 12kg) from hip to eye level. We computed the mechanical powers of the glenohumeral joint and its spanning muscles. We characterized the function of muscles and degrees of freedom using function indices. The function of the glenohumeral joint underlined its compliancy and design for a large range of motion, while the rotator cuff indices emphasized their stabilizing function. The overall muscle functions underlined the complexity of the glenohumeral stability that goes beyond the rotator cuff. Additionally, the load increase was compensated with changes in the functions that seem to favor joint stability. The implemented approach represents a synthetized tool that could quantify the glenohumeral joint and muscles behavior during tridimensional upper limb tasks, which might offer additional insight into motor control strategies and functional alterations related to pathologies or external parameters (e.g., load).
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::92f1d5e9cfd207974ab4e8326c09700d&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France FrenchPublisher:Publications d'architecture et d'urbanisme Authors: KORSU, Emre;KORSU, Emre;All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::3afd73df7abeec5db64e5cdd4f370d72&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::3afd73df7abeec5db64e5cdd4f370d72&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France FrenchAuthors: PIGALLE, Eléonore; AGUILERA, Anne;PIGALLE, Eléonore; AGUILERA, Anne;-
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::714143e425d257e6987636399f2d901f&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:Elsevier BV Authors: SAILLIO, Mickael; SABEUR, Hassen; VINCENT, Julien; ZITOUN, Bruno;SAILLIO, Mickael; SABEUR, Hassen; VINCENT, Julien; ZITOUN, Bruno;In case of fire in a structure, concrete undergoes internal transformations that can alter its durability. It is also important to take into account the effect of the cooling regime after temperature exposure on the phase assemblage of the cementitious matrix. An experimental investigation was carried out to investigate the changes of a cement paste, heated up to various temperature up to 1000°C then cooled in water or cooled in air for comparison. Quantitative evolution of phase assemblage is obtained by various techniques (TGA, XRD, NMR and ICP-AES). For both cooling regimes, the hydrated crystallised phases tend to become disordered phases for lower exposition temperature. These phases coexist with anhydrous products for intermediate temperature and these new anhydrous phases become the majority for higher temperature. However, the two cooling regimes show differences. Equilibrium of hydrated aluminate phases is modified, (e.g. AFm/AFt ratio). There are structural modifications of the phases in particular for C-S-H. For water cooling regime, beyond 600°C, a leaching is observed in particular for calcium.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::802e6cb1f7550ec0939956d1b287fd6f&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:Elsevier BV Authors: CLABAUX, Nicolas; FOURNIER, Jean-Yves;CLABAUX, Nicolas; FOURNIER, Jean-Yves;Introduction: Since the 1st October 2008, in France, all vehicles must be equipped with a safety kit including a high-visibility vest and a warning triangle. The main purpose of this measure was to improve the safety of pedestrians who are near vehicles that have broken down or have had a crash. The objective of the research presented in this paper was to study the evolution of pedestrian collisions occurred on rural roads near an immobile vehicle after the obligation. Method: Investigations covered two French departments and the 2005-2011 period. The years 2005-2007 was chosen as the «before» period, whereas the years 2009-2011 was chosen as the «after» period. Change in the proportion of the crash scenario «undetected pedestrian near an immobile vehicle» (UPIV) amongst all the pedestrian crashes recorded outside urban areas after the obligation, was examined. Results: A stagnation in the proportion of pedestrian crashes corresponding to the UPIV crash scenario throughout both departments was observed. The proportion went from 27% during the before period to 28% during the after period. The Cochran-Mantel-Haenszel test showed that there was no significant difference (p=1.00 and common odds ratio=0.982; 95% CI [0.439; 2.190]). Detailed study of crashes suggest that this lack of change could be explained by the fact that automobile drivers who have to get out of their vehicles after a breakdown or a crash rarely wear their high-visibility vest and do not put out their warning triangle.Conclusions: Mandatory safety kit has not had the expected impact. Implications for prevention are discussed.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::59e8e4809b5bb9983461cf1b6949fed9&type=result"></script>'); --> </script>
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apps Other research product2021 France EnglishPublisher:Association for Computing Machinery - ACM Authors: GRAMAGLIA, Marco; FIORE, Marco; FURNO, Angelo; STANICA, RAZVAN;GRAMAGLIA, Marco; FIORE, Marco; FURNO, Angelo; STANICA, RAZVAN;Datasets of mobile phone trajectories collected by network operators offer an unprecedented opportunity to discover new knowledge from the activity of large populations of millions. However, publishing such trajectories also raises significant privacy concerns, as they contain personal data in the form of individual movement patterns. Privacy risks induce network operators to enforce restrictive confidential agreements in the rare occasions when they grant access to collected trajectories, whereas a less involved circulation of these data would fuel research and enable reproducibility in many disciplines. In this work, we contribute a building block towards the design of privacy-preserving datasets of mobile phone trajectories that are truthful at the record level. We present GLOVE, an algorithm that implements k-anonymity, hence solving the crucial unicity problem that affects this type of data while ensuring that the anonymized trajectories correspond to real-life users. GLOVE builds on original insights about the root causes behind the undesirable unicity of mobile phone trajectories, and leverages generalization and suppression to remove them. Proof-of-concept validations with large-scale real-world datasets demonstrate that the approach adopted by GLOVE allows preserving a substantial level of accuracy in the data, higher than that granted by previous methodologies.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::bc23cbb72ed6027d7e63cfa408968c74&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 FrancePublisher:Pétrole Éditions Authors: L'HOSTIS, Alain; BARBIER, Jean-François;L'HOSTIS, Alain; BARBIER, Jean-François;La représentation de l'espace-temps géographique est une des fonctions essentielles de la cartographie, dès ses premières occurrences connues chez les Égyptiens, mais qui a fait l'objet de plusieurs tentatives pour dépasser les limites des cartes classiques. C'est l'objectif de la proposition de Philippe Mathis en 1990 qui repose sur des principes de représentation des réseaux de transport sur une surface géographique déformée dans les trois dimensions. C'est ce modèle que j'ai mis en images à partir du milieu des années 1990 et que je continue à développer en raison de la complexité de sa mise en oeuvre, de sa situation à la frontière de champs disciplinaires différents - cartographie, visualisation scientifique, jeu vidéo, et de la profondeur de la remise en question de nos représentations de l'espace qu'il porte. Nous présentons ici le parcours de ce modèle, depuis son énoncé initial, sa mise en oeuvre graphique, jusqu'à la dynamique de collaboration actuelle.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::7a6d89a2fbdf719bff0600afdcc632ca&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:IWA publishing Authors: LARRARTE, Frédérique; LEPOT, Mathieu; CLEMENS-MEYER, François; BERTRAND-KRAJEWSKI, Jean Luc; +3 AuthorsLARRARTE, Frédérique; LEPOT, Mathieu; CLEMENS-MEYER, François; BERTRAND-KRAJEWSKI, Jean Luc; IVETIC, Damjan; PRODANOVIC, Dusan; STEGEMAN, Bram;La connaissance des niveaux d'eau et des rejets dans les systèmes de drainage urbain et de gestion des eaux pluviales (UDSM) est d'une importance capitale pour comprendre leur fonctionnement et leurs processus, pour évaluer leurs performances et pour fournir des données pour la modélisation. Dans ce chapitre, consacré principalement aux réseaux souterrains d'égouts unitaires et séparatifs, diverses méthodes et technologies sont décrites et discutées. Après une introduction aux aspects importants à prendre en compte lors de la mesure des rejets dans les réseaux d'égouts, les parties suivantes sont présentées successivement : (i) mesure du niveau d'eau à l'aide de règles, de capteurs de pression, d'ultrasons et de radars, (ii) mesure de la vitesse d'écoulement à l'aide de capteurs à ultrasons, Doppler, profileurs de vitesse, à surface libre et électromagnétiques, (iii) mesure directe du débit à l'aide d'appareils pré-calibrés, de modèles à l'échelle physique, de modélisation numérique de la dynamique des fluides et de l'utilisation de stations de pompage, et (iv) détection et/ou mesure de l'infiltration et de l'exfiltration dans les égouts, à l'aide de mesures de débit ou de pression, d'expériences de traçage, de détection de la température distribuée et de méthodes géophysiques.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::601b080d5320f8678b2f8c51e4b60b6d&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:Multidisciplinary Digital Publishing Institute - MDPI Authors: SKIRIBOU, Camelia; ELBAHHAR, Fouzia;SKIRIBOU, Camelia; ELBAHHAR, Fouzia;Signal identification is of great interest for various applications such as spectrum sharing and interference management. A typical signal identification system can be divided into two steps. A feature vector is first extracted from the received signal, then a decision is made by a classification algorithm according to its observed values. Some existing techniques show good performance but they are either sensitive to noise level or have high computational complexity. In this paper, a machine learning algorithm is proposed for the identification of vehicular communication signals. The feature vector is made up of Instantaneous Frequency (IF) resulting from time-frequency (TF) analysis. Its dimension is then reduced using the Singular Value Decomposition (SVD) technique, before being fed into a Random Forest classifier. Simulation results show the relevance and the low complexity of IF features compared to existing cyclostationarity-based ones. Furthermore, we found that the same accuracy can be maintained regardless of the noise level. The proposed framework thus provides a more accurate, robust and less complex V2X signal identification system.
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For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:SPRINGER LIU, Yichun; SULEM, Jean; SUBRIN, Didier; TRAN- MANH, Huy; HUMBERT, Emmanuel;A squeezing Carboniferous formation was met at a depth of 300 m during the excavation of the Saint-Martin-la-Porte access gallery (SMP2) in France within the Lyon-Turin railway link project. Large, time-dependent and anisotropic deformation was observed around the tunnel wall during and after excavation, and difficulties related to tunneling in squeezing ground have been encountered. An anisotropic visco-elastic plastic constitutive law (Tran- Manh et al. 2015) has been proposed in order to model the ground behavior. This model was validated by field auscultation carried out in SMP2. As a part of the base tunnel, a new survey gallery (SMP4) began to be excavated in the recent years across the same squeezing rock formation at a depth of about 600 m. A yield control support system was adopted in the zones of large deformation, which contains highly deformable concrete elements to stabilize the high convergence (Bonini and Barla 2012). In the present work, the studies of SMP2 are extended to SMP4 by considering the constitutive model developed for SMP2. The innovative excavation and support method is taken into account. Numerical modeling is performed using FLAC3D to analyze the tunnel response. A good agreement can be obtained between the field measurements and the numerical results.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::ddf0b1c15014f65c91d0c51d1ebc5e43&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:Elsevier BV Authors: ASSILA, Najoua; DUPREY, Sonia; BEGON, Mickaël;ASSILA, Najoua; DUPREY, Sonia; BEGON, Mickaël;The mobility of the healthy shoulder depends on complex interactions between the muscles spanning its glenohumeral joint. These interactions ensure the stability of this joint. While previous studies emphasized the complexity of the glenohumeral stability, it is still not clear how the kinematics and muscles interact and adapt to ensure a healthy function of the glenohumeral joint. To understand the function of each muscle and degree of freedom of the glenohumeral joint in executing an above-the shoulder box handling task while ensuring stability, we adapted an index-based approach previously used to characterize the functions of the lower limb joints and muscles during locomotion. Forty participants lifted two loads (6 Vs. 12kg) from hip to eye level. We computed the mechanical powers of the glenohumeral joint and its spanning muscles. We characterized the function of muscles and degrees of freedom using function indices. The function of the glenohumeral joint underlined its compliancy and design for a large range of motion, while the rotator cuff indices emphasized their stabilizing function. The overall muscle functions underlined the complexity of the glenohumeral stability that goes beyond the rotator cuff. Additionally, the load increase was compensated with changes in the functions that seem to favor joint stability. The implemented approach represents a synthetized tool that could quantify the glenohumeral joint and muscles behavior during tridimensional upper limb tasks, which might offer additional insight into motor control strategies and functional alterations related to pathologies or external parameters (e.g., load).
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For further information contact us at helpdesk@openaire.euapps Other research product2021 France FrenchPublisher:Publications d'architecture et d'urbanisme Authors: KORSU, Emre;KORSU, Emre;All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::3afd73df7abeec5db64e5cdd4f370d72&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::3afd73df7abeec5db64e5cdd4f370d72&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France FrenchAuthors: PIGALLE, Eléonore; AGUILERA, Anne;PIGALLE, Eléonore; AGUILERA, Anne;-
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::714143e425d257e6987636399f2d901f&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:Elsevier BV Authors: SAILLIO, Mickael; SABEUR, Hassen; VINCENT, Julien; ZITOUN, Bruno;SAILLIO, Mickael; SABEUR, Hassen; VINCENT, Julien; ZITOUN, Bruno;In case of fire in a structure, concrete undergoes internal transformations that can alter its durability. It is also important to take into account the effect of the cooling regime after temperature exposure on the phase assemblage of the cementitious matrix. An experimental investigation was carried out to investigate the changes of a cement paste, heated up to various temperature up to 1000°C then cooled in water or cooled in air for comparison. Quantitative evolution of phase assemblage is obtained by various techniques (TGA, XRD, NMR and ICP-AES). For both cooling regimes, the hydrated crystallised phases tend to become disordered phases for lower exposition temperature. These phases coexist with anhydrous products for intermediate temperature and these new anhydrous phases become the majority for higher temperature. However, the two cooling regimes show differences. Equilibrium of hydrated aluminate phases is modified, (e.g. AFm/AFt ratio). There are structural modifications of the phases in particular for C-S-H. For water cooling regime, beyond 600°C, a leaching is observed in particular for calcium.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______2966::802e6cb1f7550ec0939956d1b287fd6f&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euapps Other research product2021 France EnglishPublisher:Elsevier BV Authors: CLABAUX, Nicolas; FOURNIER, Jean-Yves;CLABAUX, Nicolas; FOURNIER, Jean-Yves;Introduction: Since the 1st October 2008, in France, all vehicles must be equipped with a safety kit including a high-visibility vest and a warning triangle. The main purpose of this measure was to improve the safety of pedestrians who are near vehicles that have broken down or have had a crash. The objective of the research presented in this paper was to study the evolution of pedestrian collisions occurred on rural roads near an immobile vehicle after the obligation. Method: Investigations covered two French departments and the 2005-2011 period. The years 2005-2007 was chosen as the «before» period, whereas the years 2009-2011 was chosen as the «after» period. Change in the proportion of the crash scenario «undetected pedestrian near an immobile vehicle» (UPIV) amongst all the pedestrian crashes recorded outside urban areas after the obligation, was examined. Results: A stagnation in the proportion of pedestrian crashes corresponding to the UPIV crash scenario throughout both departments was observed. The proportion went from 27% during the before period to 28% during the after period. The Cochran-Mantel-Haenszel test showed that there was no significant difference (p=1.00 and common odds ratio=0.982; 95% CI [0.439; 2.190]). Detailed study of crashes suggest that this lack of change could be explained by the fact that automobile drivers who have to get out of their vehicles after a breakdown or a crash rarely wear their high-visibility vest and do not put out their warning triangle.Conclusions: Mandatory safety kit has not had the expected impact. Implications for prevention are discussed.
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