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See detailThe words of prevention, part II: ten terms in the realm of quaternary prevention
Jamoulle, Marc ULg; Gavilan, Enrique; Cardoso, Raquel Val et al

in Revista Brasileira de Medicina de Família e Comunidade (2015), 10(35), 1-9

ABSTRACT Objective: This part II article about the ‘words of prevention’ presents in a terminological way the content of ten current concepts used in the prevention domain which are closely linked to ... [more ▼]

ABSTRACT Objective: This part II article about the ‘words of prevention’ presents in a terminological way the content of ten current concepts used in the prevention domain which are closely linked to quaternary prevention: (1) overinformation, (2) overdiagnosis, (3) medically unexplained symptoms, (4) overmedicalisation, (5) incidentaloma, (6) overscreening, (7) overtreatment, (8) shared decision making, (9) deprescribing, and (10) disease mongering. Methods: with the support of the laboratory team of the University of Rouen, France, which is dedicated to medical terminology and semantic relationships, it was possible to utilize a graphic user interface (called DBGUI) allowing the construction of links for each of chosen terms, and making automatic links to MeSH, if any. Those concepts are analyzed in their environment in current literature, as well as in their MeSH counterparts, if any, and related semantic online terminologies. Results and Discussion: The rules in terminological development aspire to cover the whole field of a concept and in the meantime, it helps to avoid the noise due to proxy and not exactly related issues. This refers to exhaustivity and specificity in information retrieval. Our finds show that referring to MeSH only in information retrieval in General Practice/Family medicine can induce much noise and poor adequacy to the subject investigated. Conclusion: Gathering concepts in specially prepared terminologies for further development of ontologies is a necessity to enter in the semantic web area and the era of distributed data. [less ▲]

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See detailEarly evolution of large microorganisms with cytological complexity revealed by microanalyses of 3.4 Ga organic-walled microfossils.
Sugitani; Mimura, K; Takeuchi, M et al

in Geobiology (2015)

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See detailIdentification of the main parameters controlling the plasticity of ceramic pastes: The case study of the Marrakech region (Morocco)
El Boudour El Idrissi, Hicham ULg; Daoudi, Lahcen; Fontaine, François ULg et al

Poster (2015, June)

Numerous traditional ceramic workshops occur within a range of 10 to 80 km around the city of Marrakech. Our study aims to identify the main parameters controlling the plasticity of pastes used by the ... [more ▼]

Numerous traditional ceramic workshops occur within a range of 10 to 80 km around the city of Marrakech. Our study aims to identify the main parameters controlling the plasticity of pastes used by the artisans. To reach this goal, we characterize by X-ray diffraction, granulometry and plasticity index (PI) the local raw clayey material. The investigation of 26 whole pastes shows the dominance of quartz (20 to 50%) and clay minerals (25 to 60%) with K-feldspar (2 to 17%), plagioclase (2 to 25%), calcite (0 to 18%), dolomite (0 to 15%), goethite (0 to7%) and trace of hematite and anhydrite (< 3%). Amphibole occurs in trace (< 5%) but only in some samples. The clay minerals are diversified, including illite (10 to 40%), kaolinite (2 to 15%), mixed-layer (ML) (0 to 10%), smectite, vermiculite and chlorite (0 to 5%), and pyrophyllite-talc association (0 to 8%). Sepiolite (12%) is only present in one paste. The grain size is made by variable proportions of sand (5 to 65%), silt (12 to 53%) and clayey fraction (18 to 66%). The Plasticity index (PI) indicates the presence of two principals groups of pastes. (1) The first group is characterized by PI values ranging between 15 to 18. Their moderate plasticity behavior is related either to the low rate of clayey fraction and/or to the absence of plastic clays like smectites and mixed layer with smectitic sheets. (2) The PI of second group ranges between 20 to 32. The high plasticity values are influenced by the presence of specific clayey minerals like talc-pyrophyllite or sepiolite, or by the high content of smectite plus smectitic mixed-layers within the clayey (< 2 micron) fraction. Only one sample without any of these plastic minerals but with a high content of clayey fraction is characterized by a high PI value (24). We concluded that the workability of ceramic paste in Marrakech region is controlled by a combination of factors, dominated by the grain size distribution and the content in plastic clay minerals within the fine fraction. [less ▲]

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See detailA new formulation of state estimation in distribution systems including demand and generation states
Rousseaux, Patricia ULg; Toubeau, Jean-François; De Grève, Zacharie et al

in proceeedings of the 2015 Power Tech conference (2015, June)

Distribution system state estimation faces a major difficulty: the lack of real-time measurements. This imposes to add information, usually pseudo-measurements from historical data. This paper proposes a ... [more ▼]

Distribution system state estimation faces a major difficulty: the lack of real-time measurements. This imposes to add information, usually pseudo-measurements from historical data. This paper proposes a different, novel formulation of state estimation relying on the classification of loads into components (e.g. residential, commercial, etc.) and accounting for dispersed generation. The approach “by-passes” the use of pseudo-measurements by expressing the medium-voltage bus injections as functions of a small number of active power components at low-voltage level, treated as additional state variables. The injections at medium-voltage buses become equality constraints. A procedure to identify the above functions is detailed, which takes advantage of data collected by smart meters. [less ▲]

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See detailA dynamic simulation approach to identify additional reactive reserves against long-term voltage instability
Papangelis, Lampros ULg; Panciatici, Patrick; Debry, Marie-Sophie et al

in Proc. of IEEE PES 2015 PowerTech conference (2015, June)

A simple method is proposed to identify additional reactive reserves enabling to counteract long-term voltage instability after a large disturbance. In contrast to the many references based on power flow ... [more ▼]

A simple method is proposed to identify additional reactive reserves enabling to counteract long-term voltage instability after a large disturbance. In contrast to the many references based on power flow calculations, the method resorts to dynamic simulation. The post-disturbance system evolution is simulated in the presence of time-varying shunt susceptances with specified rate of change. This allows to deal with dynamic issues such as the required speed of the additional reactive power sources, or the onset of unstable electromechanical oscillations. Furthermore, a compromise is sought between the speed of action and the volume of additional compensation. The method is demonstrated on a detailed model of the Nordic test system. [less ▲]

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See detailModular modelling of combined AC and DC systems in dynamic simulations
Aristidou, Petros ULg; Papangelis, Lampros ULg; Guillaud, Xavier et al

in Proc. of IEEE PES 2015 PowerTech conference (2015, June)

A formulation is proposed in which an AC-DC system is modeled as a combination of AC grids, DC grids, injectors, AC two-ports and AC/DC converters, respectively. This modular modelling facilitates the ... [more ▼]

A formulation is proposed in which an AC-DC system is modeled as a combination of AC grids, DC grids, injectors, AC two-ports and AC/DC converters, respectively. This modular modelling facilitates the dynamic simulation of future complex AC/DC systems. Furthermore, it can be exploited by the solver, which performs less operations on components with lower dynamic activity, and offers parallel processing of the time simulation. This approach is illustrated on a test system in which a multi-terminal DC grid connects two asynchronous AC systems, allows frequency support between them, and acts as emergency control against AC voltage instability. [less ▲]

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See detailFrom the Guiding Principles on Internal Displacement to the Nansen Initiative: What the Governance of Environmental Migration Can Learn from the Governance of Internal Displacement
Gemenne, François ULg; Brücker, Pauline

in International Journal of Refugee Law (2015), 27(2), 245-263

Environmental migration is often presented as one of the gravest consequences of environmental disruptions – climate change in particular, and is already a reality in many parts of the world. Yet the ... [more ▼]

Environmental migration is often presented as one of the gravest consequences of environmental disruptions – climate change in particular, and is already a reality in many parts of the world. Yet the protection of these migrants is not adequately addressed in the international normative frameworks on migration. As a result, a growing number of scholars and advocacy groups have sought to create a special convention and/or an ad hoc status for these migrants, while others have contended that such a legal status is not the answer. As a result, the protection of environmental migrants is currently the subject of vigorous debates amongst scholars and policy-makers, and no clear solution is yet in sight. Research however has little considered the debates that surrounded the protection of those displaced within their countries (IDPs) in the 1990s. Both phenomena have sometimes overlapped, especially as environmental displacement is often internal. Yet, the debate on IDPs has had some significant success, in particular, the adoption of the Guiding Principles on Internal Displacement in 1998, and the signature of the Organization for African Unity’s Kampala Convention in 2009. This article argues that important lessons can be drawn from the protection of IDPs in order to inform the current debates on the protection of environmental migrants, as the political contexts and policy challenges associated with both crises of the migration regime are often similar. The article identifies such lessons and assesses the opportunities and caveats of applying a similar approach of soft law to environmental migration – and what would be needed to achieve it. [less ▲]

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See detailShort-term responses of glass eels transported from UK to small Belgian streams
Ovidio, Michaël ULg; Tarrago-Bes, Frédérique; Nzau Matondo, Billy ULg

in Annales de Limnologie = International Journal of Limnology (2015)

Restocking of inland waters with glass eels is one of the recovery options to prevent the decline of European eel Anguilla anguilla (L.) populations. We studied the growth, dispersion, density and habitat ... [more ▼]

Restocking of inland waters with glass eels is one of the recovery options to prevent the decline of European eel Anguilla anguilla (L.) populations. We studied the growth, dispersion, density and habitat preferences in the imported glass eels from United-Kingdom and stocked in three typologically different small Belgian streams, using electrofishing surveys around the single release point, 1 year following stocking. Our results clearly support that the recaptured individuals stocked in our streams farther from the sea, survived, grew, dispersed upstream and downstream. Elvers exploited the complete transversal section of stream, with preference for the sheltered microhabitats near the banks with slower water velocity and low depth. Length-weight relationship was different between streams in terms of allometric coefficient (b). We assume that microhabitats and food availabilities lead to contrasted results in terms of growth and absolute occurrence. Restocking of glass eels in small middle-land streams was found to be an interesting and unconventional option that requires adequate stream and habitat selection. [less ▲]

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See detailCrystal structure of arsenuranospathite from Rabejac, Lodève, France
Dal Bo, Fabrice ULg; Hatert, Frédéric ULg; Baijot, Maxime ULg et al

in European Journal of Mineralogy (2015), 27

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See detailReduced Order Model for Accounting for High Frequency Effects in Power Electronic Components
Paquay, Yannick ULg; Geuzaine, Christophe ULg; Hasan, Md. Rokibul et al

Poster (2015, June)

This paper proposes a reduced-order model of power electronic components based on the proper orthogonal decomposition. Starting from a full-wave finite-element model and several snapshots/frequencies, the ... [more ▼]

This paper proposes a reduced-order model of power electronic components based on the proper orthogonal decomposition. Starting from a full-wave finite-element model and several snapshots/frequencies, the reduced-order (RO) model is constructed. Local field values (e.g. magnetic flux density, electric current density, magnetic or electric field) and global quantities (e.g. characteristic complex impedance, joule losses) can be determined for the intermediate frequencies with a very low computational cost and high accuracy. Particular attention is paid to the choice of the most suitable snapshots by means of three different greedy algorithms, the performance of which is compared. We adopt an automatic greedy algorithm that depends only on the RO model. [less ▲]

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See detailNonlinear Interpolation on Manifold of Reduced Order Models in Magnetodynamic Problems
Paquay, Yannick ULg; Bruls, Olivier ULg; Geuzaine, Christophe ULg

Poster (2015, June)

Proper Orthogonal Decomposition (POD) is an efficient model order reduction technique for linear problems in computational sciences, recently gaining popularity in electromagnetics. However, its ... [more ▼]

Proper Orthogonal Decomposition (POD) is an efficient model order reduction technique for linear problems in computational sciences, recently gaining popularity in electromagnetics. However, its efficiency has been shown to considerably degrade for nonlinear problems. In this paper, we propose a reduced order model for nonlinear magnetodynamic problems by combining POD with an interpolation on manifolds, which interpolates the reduced bases to efficiently construct the desired solution. [less ▲]

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See detailAtmospheric pressure mode localization coupled resonators stiffness sensor
Montaseri, Mohammad; Xie, J.B.; Chang, Homglong et al

in Proceedings of Solid-State Sensors, Actuators and Microsystems (Transducers 2015) (2015, June)

This paper reports on a 3-DoF mode localization resonant sensor experimentally evaluated under atmospheric conditions. It was demonstrated that using amplitude ratio as an output signal, even when the ... [more ▼]

This paper reports on a 3-DoF mode localization resonant sensor experimentally evaluated under atmospheric conditions. It was demonstrated that using amplitude ratio as an output signal, even when the device is operated in air, yields a higher sensitivity compared to the frequency variation sensitivity when assuming vacuum conditions. [less ▲]

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See detailA novel resonant accelerometer based on model localization of weakly coupled resonators.
Zhang, Hemin; Yuan, W.Z.; Li, B.Y. et al

in Proceedings of Solid-State Sensors, Actuators and Microsystems (Transducers 2015) (2015, June)

This paper describes a novel MEMS resonant accelerometer based on two weakly coupled resonators (WCRs) using the phenomenon of mode localization. It is the first time that this principle is demonstrated ... [more ▼]

This paper describes a novel MEMS resonant accelerometer based on two weakly coupled resonators (WCRs) using the phenomenon of mode localization. It is the first time that this principle is demonstrated experimentally for an accelerometer. The measured relative shift in amplitude ratio (~312162 ppm/g) is 302 times higher than the shift in resonance frequency (~1035 ppm/g). [less ▲]

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See detailFrom FIPA to gigantism
Beckers, Albert ULg

Scientific conference (2015, June)

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See detailQualité de vie de résidents souffrant de pathologies démentielles issus de 32 MR/MRS de l’asbl FIH
Missotten, Pierre ULg; Schroyen, Sarah ULg; Adam, Stéphane ULg

Report (2015)

Effectuée au niveau de 32 institutions, l’enquête FIH-ULg a permis de récolter des informations par rapport à 1020 résidents et 1412 professionnels. En vue d’évaluer au mieux le niveau de qualité de vie ... [more ▼]

Effectuée au niveau de 32 institutions, l’enquête FIH-ULg a permis de récolter des informations par rapport à 1020 résidents et 1412 professionnels. En vue d’évaluer au mieux le niveau de qualité de vie des résidents (et des facteurs l’influençant), nous avions pris le parti de prendre en considération, dans la mesure du possible, l’avis d’au moins deux professionnels pour un même résident. Ceci nous a permis d’analyser les données à deux niveaux : (1) en privilégiant un score moyen de qualité de vie pour chaque résident (score tenant compte de l’avis des deux ou trois professionnels ayant évalué le niveau de qualité de vie d’un même résident) et (2) en regardant la différence de perception de qualité de vie pouvant exister entre les différents professionnels évaluant un même résident. En vue de mieux comprendre ce qui fait que la qualité de vie n’est pas similaire pour tous les résidents, nous avons mis en lien le niveau de qualité de vie des résidents avec toute une série de facteurs susceptibles de l’influencer, à savoir des facteurs liés (1) au résident lui-même (âge, sexe, diagnostic, niveau de dépendance, etc.), (2) à son contexte de vie (MR ou MRS, unité spécifique ou non, chambre individuelle ou collective, etc.), (3) aux professionnels évaluant la qualité de vie des résidents (âge, sexe, profession, etc., mais aussi vision du vieillissement et des pathologies démentielles) et (4) à la relation existant entre ces professionnels et les résidents (nature, fréquence et qualité des contacts). [less ▲]

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See detailMeasurement of 3D Room Impulse Responses with a Spherical Microphone Array
Embrechts, Jean-Jacques ULg

in Proceedings of the Euronoise 2015 Congress (2015, June)

Directional room impulse responses (DRIRs) are composed of the sound contributions reaching a given location in the room from a well-defined direction in space. DRIRs can be useful in many applications ... [more ▼]

Directional room impulse responses (DRIRs) are composed of the sound contributions reaching a given location in the room from a well-defined direction in space. DRIRs can be useful in many applications, such as the evaluation of spatial room acoustics parameters, the detection of unwanted specular reflections or the 3D auralization of acoustic spaces. A spherical array containing 16 microphones has been realized to measure DRIRs. The logarithmic sinesweep technique is first applied to measure 16 impulse responses, one for each microphone. A spherical harmonics (SH) decomposition of the sound field is then obtained. Spatial aliasing, placement errors and the ‘white noise gain’ (WNG) have been analysed to define the useful bandwith of this measure, i.e. [250Hz – 4kHz]. The coefficients of the SH decomposition are then processed by some beamforming methods, in order to compute the DRIR in any direction around the spherical array. Time and 3D space representations can be generated. The results obtained in some rooms are illustrated in this paper: it is shown that the combination of the ‘delay-and-sum’ and ‘minimum-variance distorsionless response’ beamforming methods is particularly well suited for the analysis of DRIRs. [less ▲]

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See detailDescription of the research project CIMEDE for the industrial construction of evolutionary, sustainable and economic houses
Duthoit, Fabienne ULg; Embrechts, Jean-Jacques ULg

in Proceedings of the Euronoise 2015 Congress (2015, June)

CIMEDE is a research project supported by the Region of Wallonia (Belgium). It stands for CIMEDE “Construction Industrielle de Maisons Evolutives, Durables et Economiques – industrial construction of ... [more ▼]

CIMEDE is a research project supported by the Region of Wallonia (Belgium). It stands for CIMEDE “Construction Industrielle de Maisons Evolutives, Durables et Economiques – industrial construction of evolutionary, sustainable and economic houses”. Since the materials envisaged for this project are timber and gypsum fibre board, it was necessary to design a constructive principle of lightweight timber frame constructions which meets the industrial, sustainable, evolutionary and economic requirements and also the requirements of the Belgian acoustic standard NBN S01-400-1. First of all, an inventory of constructive elements that are currently used in this type of construction (floors, walls and facades) is presented with their acoustic performances. Then, the laboratory measurements of some samples of floors, facades, interior walls and partition walls are described and discussed. On the basis of the measurement results, several solutions that best meet all criteria were retained and a mock-up was built with these constructive elements. Measurement results on this mock-up are also presented. The final solution for the floor, the partition wall, the interior wall and the facade which meets the acoustic requirements is finally described [less ▲]

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See detailGroupes délinquants juvéniles, quelle méthode pour une recherche « ethno-criminologique » ? La loi des 4 C
Witvrouw, Line ULg; Glowacz, Fabienne ULg

in Revue Internationale de Criminologie et de Police Technique et Scientifique [= RICPTS] (2015), LXVIII(Avril-Juin), 196-209

La criminologie nous amène à travailler avec des populations difficiles d’accès et requiert une démarche méthodologique structurée et prenant en compte les caractéristiques du milieu de rencontre. A ... [more ▼]

La criminologie nous amène à travailler avec des populations difficiles d’accès et requiert une démarche méthodologique structurée et prenant en compte les caractéristiques du milieu de rencontre. A partir de notre recherche portant sur les groupes de jeunes délinquants ou déviants, une spécificité est apparue dès le début des démarches empiriques. En effet, une notion d’exclusivité est entendue entre chaque membre du groupe, rendant l’accès à l’information difficile tant les frontières de ce groupe vis-à-vis de l’extérieur sont imperméables. Le chercheur se trouve alors confronté à différents obstacles: la difficulté de prise de contacts avec les groupes, la difficulté d’intégration du chercheur au sein de ceux-ci et la difficulté de récolte de données suffisantes pour la recherche. Au vu des constats de terrain, nous avons développé une méthodologie spécifique inspirée de modèles ethnologiques. En prenant en compte les jeunes en tant qu’experts de leur vécu et les intervenants médiateurs d’inclusion sur un terrain, ce processus méthodologique relève d’une co-construction de trois pôles et partenaires et s’apparente à une approche ethno-criminologique. Ce processus par étapes se décline en séquences temporelles successives. Tout d’abord, le positionnement du chercheur comme non-détenteur du savoir, la triangulation de la relation, l’acceptation de la temporalité de la démarche et de l’instrumentalisation de la relation sont autant d’éléments constituant l’étape préalable de ce processus méthodologique. Les étapes suivantes se construisent sur la base de l’évolution du lien entre le chercheur et les jeunes. La loi des 4 C réunit ces étapes, la relation évoluant de la confiance, à la confidence, ensuite à la communication pour aboutir à la coopération [less ▲]

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