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See detailThe International Journal of Educational Organization and Leadership
Noiroux, Kevin ULg

in The International Journal of Educational Organization and Leadership (2015), 21.5

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See detailAnisotropy and tension-compression asymmetry modeling of the room temperature plastic response of Ti-6A1-4V
Tuninetti, Victor; Gilles, Gaëtan ULg; Pardoen, Thomas et al

in International Journal of Plasticity (2015), 67

The mechanical behavior of the alloy Ti-6A1-4V is characterized using uniaxial tension, uniaxial compression, simple shear and place strain tests in three orthogonal material directions. The experimental ... [more ▼]

The mechanical behavior of the alloy Ti-6A1-4V is characterized using uniaxial tension, uniaxial compression, simple shear and place strain tests in three orthogonal material directions. The experimental results reveal tension/compression asymmetry, anisotropic yielding and anisotropic strain-hardening. These features are incorporated into an elasto-plastic constitutive law based on the macroscopic orthotropic yield criterion "CPB06" adapted to hexagonal metals. A new identification method for the yield criterion parameters is proposed by inverse modeling of the axial strain field compression specimens in the three orthogonal directions of the material. The sensitivity of different sets of material parameters to the identification method is also analysed and the capacity of the model to accurately predict the forces and displacement field is discussed. A validation of the best set of identified CPB06material parameters is performed by comparing the load-displacement curves in different loading directions for tensile tests on notched round bars with different levels of stress triaxiality and for compression tests on elliptical cross-section specimens, both tests involving multiaxial strain fields and large deformations. [less ▲]

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See detailJean-François Tielemans (1831-1832)
Genin, Vincent ULg

in Raxhon, Philippe (Ed.) Les Gouverneurs de la province de Liège. Histoire d’une fonction, mémoire d’une action (2015)

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See detailGaston Grégoire (1919-1927)
Genin, Vincent ULg

in Raxhon, Philippe (Ed.) Les Gouverneurs de la province de Liège. Histoire d’une fonction, mémoire d’une action (2015)

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See detailTesting the impact of stratigraphic uncertainty on spectral analysis of sedimentary time series
Martinez, Mathieu; Kotov, Sergey; De Vleeschouwer, David et al

Poster (2015, April)

Spectral analysis has become a key tool for identifying the imprint of astronomical forcing on sedimentary records. In a next step, the identified cycles often contribute to the construction of a precise ... [more ▼]

Spectral analysis has become a key tool for identifying the imprint of astronomical forcing on sedimentary records. In a next step, the identified cycles often contribute to the construction of a precise Geological Time Scale and to an in-depth understanding of past climate changes. Most of spectral analyses (Fast Fourier Transforms, the Multi-Taper Method. . . ) require a constant sample step. Unfortunately, an equally spaced geological data series is, in practice, nearly impossible to obtain from field sedimentary series. Usually, there is a 10% uncertainty on the field measurements of the stratigraphic thickness within sedimentary series. Hence, important uncertainties exist on the actual position of each sample. Another source of uncertainty are errors in a time-space model. In this study, we explore the impact that the stratigraphic uncertainty on the sample position has on the result of spectral analyses. To simulate this uncertainty, we developed a model based on the Monte Carlo randomisation of the distance between each successive point. In this way, the stratigraphic order of the data points is not affected after imp lementating this model. The application of this model to a theoretical sinusoid series and to several real sedimentary series shows that uncertainties in the actual position of samples can highly reduce the spectral powers of the frequencies ranging from the Nyquist Frequency up to 1/10 of the Nyquist Frequency. We the demonstrate that the precise reconstruction of the Milankovitch cycles in the sedimentary record requires a higher sampling density than previously suggested with, at least, 10 samples per thinnest cycle to be detected, i.e. 10 samples per precession cycle [less ▲]

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See detailTracking Middleboxes in the Mobile World with TraceboxAndroid
Thirion, Valentin; Edeline, Korian ULg; Donnet, Benoît ULg

in 7th International Workshop on Traffic Monitoring and Analysis (TMA) (2015, April)

Middleboxes are largely deployed over cellular networks. It is known that they might disrupt network performance, expose users to security issues, and harm protocols deployability. Further, hardly any ... [more ▼]

Middleboxes are largely deployed over cellular networks. It is known that they might disrupt network performance, expose users to security issues, and harm protocols deployability. Further, hardly any network measurements tools for smartphones are able to infer middlebox behaviors, specially if one cannot control both ends of a path. In this paper, we present TraceboxAndroid a proof-of-concept measurement application for Android mobile devices implementing the tracebox algorithm. It aims at diagnosing middlebox-impaired paths by detecting and locating rewriting middleboxes. We analyze a dataset sample to highlight the range of opportunities offered by TraceboxAndroid. We show that TraceboxAndroid can be useful for mobile users as well as for the research community. [less ▲]

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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)

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 detailConvention relative à la réhabilitation du Saumon atlantique dans le bassin de la Meuse (Rapport 2014-2015)
Ovidio, Michaël ULg; Dierckx, Arnaud ULg; Benitez, Jean-Philippe ULg et al

Report (2015)

Le présent rapport d’activités intègre les travaux des deux équipes universitaires de Namur et de Liège dans la cadre de la convention relative à la réhabilitation du saumon atlantique dans le bassin de ... [more ▼]

Le présent rapport d’activités intègre les travaux des deux équipes universitaires de Namur et de Liège dans la cadre de la convention relative à la réhabilitation du saumon atlantique dans le bassin de la Meuse au cours de la période février 2014- janvier 2015 [less ▲]

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See detailL’Affaire Édouard Descamps à la Cour de La Haye en 1921. Un recul international de la Belgique ?
Genin, Vincent ULg

in Revue Générale (2015), 3/4(mars-avril), 35-42

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See detailThe words of prevention, part I: changing the model
Jamoulle, Marc ULg; Gavilan, Enrique; Cardoso, Raquel Val et al

in Revista Brasileira de Medicina de Família e Comunidade (2015)

ABSTRACT Objective: This part I article explores the different meanings of relevant keywords for General Practice/Family Medicine (GP/FM) in the prevention domain. The aim is to contribute to information ... [more ▼]

ABSTRACT Objective: This part I article explores the different meanings of relevant keywords for General Practice/Family Medicine (GP/FM) in the prevention domain. The aim is to contribute to information process in GP/FM by keeping in line with the main terms used in health care organization. Methods: Important keywords for GP/FM in the prevention domain were selected. Then, a search was carried out on the main sources in GP/FM databases, as well as in Medical Subject Heading and major terminological databases available online. Results and Discussion: There is discrepancy between the conceptual contents of major prevention models amongst the usual bibliographic sources of knowledge in GP/FM in particular and medicine in general. Conclusion: For GP/FM, distribution of preventive activities is now firmly established on a new constructivist model, privileging the doctor-patient relationships and introducing a cybernetic thinking on the health care activities with a special commitment to ethics and the positive duty of beneficence. [less ▲]

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See detailPrevenção quaternária: primeiro não causar dano - Editorial
Jamoulle, Marc ULg

in Revista Brasileira de Medicina de Família e Comunidade (2015)

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See detailQuaternary prevention: first, do not harm - Editorial
Jamoulle, Marc ULg

in Revista Brasileira de Medicina de Família e Comunidade (2015)

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See detailQuelle place pour le test de génération de thrombine au sein du laboratoire de biologie clinique?
LECUT, Christelle ULg; PETERS, Pierre ULg; MASSION, Paul ULg et al

in Annales de Biologie Clinique (2015), 73(2), 137-149

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See detailManuels de langues et risques d'inégalités
Simons, Germain ULg; Delbrassine, Daniel ULg; Van Hoof, Florence ULg

in Didactiques en pratique (2015), (1),

Dans cet article synthétique, les auteurs relèvent quelques caractéristiques de certains manuels de langues contemporains et démontrent en quoi celles-ci présentent des risques d'inégalités pour les ... [more ▼]

Dans cet article synthétique, les auteurs relèvent quelques caractéristiques de certains manuels de langues contemporains et démontrent en quoi celles-ci présentent des risques d'inégalités pour les apprenants [less ▲]

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See detailEditorial du n°1 de la revue "Didactiques en pratique"
Simons, Germain ULg; Beckers, Jacqueline ULg; Poffé, Corentin ULg

in Didactiques en pratique (2015)

Ce premier éditorial de la nouvelle revue du Cifen :"Didactique en pratique" présente le contenu de ce numéro et propose une mise en perspective théorique de la problématique abordée lors de l'Université ... [more ▼]

Ce premier éditorial de la nouvelle revue du Cifen :"Didactique en pratique" présente le contenu de ce numéro et propose une mise en perspective théorique de la problématique abordée lors de l'Université d'été 2014 : "Outils didactiques et (in)égalités". Ce premier numéro est principalement consacré à la publication des Actes de l'Université d'été 2014, mais il évoque aussi la première journée de rencontre officielle entre le Cifen et les maitres de stages. [less ▲]

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See detailThe Fish Migrate and so Must We': the Relationship between International and Internal Environmental Mobility in a Senegalese Fishing Community
Zickgraf, Caroline ULg

Conference (2015, April)

In 2008, the UN designated Saint-Louis “the city most threatened by rising sea levels in the whole of Africa”. The people of Guet Ndar, a densely populated fishing quarter, are coping with environmental ... [more ▼]

In 2008, the UN designated Saint-Louis “the city most threatened by rising sea levels in the whole of Africa”. The people of Guet Ndar, a densely populated fishing quarter, are coping with environmental challenges on two fronts: 1) coastal erosion and intensifying storms have destroyed sea-front homes, and, 2) overfishing and climate change’s maritime impacts are making local fishing less feasible as a livelihood strategy. Based on a local case study, this paper examines Guet Ndarian migration as an adaptive response to environmental risks and more specifically climate change: 1) through the intensification of fishing migration to Mauritania, and 2) through home construction on the mainland away from the encroaching sea. Although these population movements respond to different environmental challenges, this paper identifies their enmeshment as the former facilitates the latter. Furthermore, it embeds these migratory dynamics in their socio-economic context and applies mobility and transnational paradigms to environmentally vulnerable areas. [less ▲]

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See detailMise en perspective de l'après-midi de rencontre avec les maîtres de stages du Cifen
Simons, Germain ULg

in Didactiques en pratique (2015), 1

Ce texte est le discours du Président du Cifen qui a été prononcé à l'occasion de la première journée officielle de rencontre entre le Centre et les maitres de stages (5 novembre 2014). Ce discours ... [more ▼]

Ce texte est le discours du Président du Cifen qui a été prononcé à l'occasion de la première journée officielle de rencontre entre le Centre et les maitres de stages (5 novembre 2014). Ce discours succinct reprend la question qui a servi de fil rouge à cette journée : "Comment collaborer efficacement pour accompagner au mieux nos stagiaires ?" et en détaille chaque composante. [less ▲]

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See detailDoes the soil’s effective hydraulic conductivity adapt in order to obey the Maximum Entropy Production principle? A lab experiment
Westhoff, Martijn ULg; Zehe, Erwin; Erpicum, Sébastien ULg et al

Conference (2015, April)

The Maximum Entropy Production (MEP) principle is a conjecture assuming that a medium is organized in such a way that maximum power is subtracted from a gradient driving a flux (with power being a flux ... [more ▼]

The Maximum Entropy Production (MEP) principle is a conjecture assuming that a medium is organized in such a way that maximum power is subtracted from a gradient driving a flux (with power being a flux times its driving gradient). This maximum power is also known as the Carnot limit. It has already been shown that the atmosphere operates close to this Carnot limit when it comes to heat transport from the Equator to the poles, or vertically, from the surface to the atmospheric boundary layer. To reach this state close to the Carnot limit, the effective thermal conductivity of the atmosphere is adapted by the creation of convection cells (e.g. wind). The aim of this study is to test if the soil’s effective hydraulic conductivity also adapts itself in such a way that it operates close to the Carnot limit. The big difference between atmosphere and soil is the way of adaptation of its resistance. The soil’s hydraulic conductivity is either changed by weathering processes, which is a very slow process, or by creation of preferential flow paths. In this study the latter process is simulated in a lab experiment, where we focus on the preferential flow paths created by piping. Piping is the process of backwards erosion of sand particles subject to a large pressure gradient. Since this is a relatively fast process, it is suitable for being tested in the lab. In the lab setup a horizontal sand bed connects two reservoirs that both drain freely at a level high enough to keep the sand bed always saturated. By adding water to only one reservoir, a horizontal pressure gradient is maintained. If the flow resistance is small, a large gradient develops, leading to the effect of piping. When pipes are being formed, the effective flow resistance decreases; the flow through the sand bed increases and the pressure gradient decreases. At a certain point, the flow velocity is small enough to stop the pipes from growing any further. In this steady state, the effective flow resistance of the sand bed will be compared with the theoretical optimal flow resistance obtained with the MEP principle. For this study, different magnitudes of the forcing will be tested, while also the effect of dry spells will be explored. [less ▲]

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See detailTeaching and learning Quaternary prevention
Gomes, Luis Enrique; Gusso, Gustavo; Jamoulle, Marc ULg

in Revista Brasileira de Medicina de Família e Comunidade (2015)

This article presents an overview of different techniques and skills required for teaching and learning quaternary prevention (P4). It adopts the Expertise Model that defines the competences required in ... [more ▼]

This article presents an overview of different techniques and skills required for teaching and learning quaternary prevention (P4). It adopts the Expertise Model that defines the competences required in P4 for each level: novice, competent, proficient, and expert. This should be used as a step-wise roadmap for teachers in order to achieve high standard levels of performance. This is complemented by a list of methods used in teaching and assessment of learners’ performance and competence. By covering a range of learning and teaching issues, those who aim to teach quaternary prevention can explore the proposed framework. Quaternary prevention is a research and teaching fertile medical field that requires the integration of different areas such as health service organization, epidemiology, communication skills, and andragogy either at the macro or the micro levels health related activities. [less ▲]

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