Last 7 days
Bookmark and Share    
Full Text
Peer Reviewed
See detailAbelian symmetries of the N-Higgs-doublet model with Yukawa interactions
Ivanov, Igor ULg; Nishi, Celso

in Journal of High Energy Physics [=JHEP] (2013), 2013(11), 069

We investigate finite abelian groups which can represent symmetries of the N-Higgs-doublet models with quarks. We build a general formalism based on the powerful method of the Smith normal form and obtain ... [more ▼]

We investigate finite abelian groups which can represent symmetries of the N-Higgs-doublet models with quarks. We build a general formalism based on the powerful method of the Smith normal form and obtain an analytic upper bound on the order of abelian symmetry groups for any N. We investigate in detail the case N = 2 and rederive known results in a more compact and intuitive fashion. We also study the NHDM with the maximal finite abelian symmetry for all small N cases up to N = 5, and show that in each case all Yukawa textures compatible with such symmetry originate from a unique basic structure. This work opens the way to a systematic exploration of phenomenology of the NHDM with a desired symmetry, and illustrates the power of the Smith normal form technique. [less ▲]

Detailed reference viewed: 12 (2 ULg)
Full Text
See detailLes biens meubles du château de Gaillon
Fagnart, Laure ULg

in Dumont, Jonathan; Fagnart, Laure (Eds.) Georges Ier d'Amboise (1460-1510). Une figure plurielle de la Renaissance (2013)

Detailed reference viewed: 26 (2 ULg)
Peer Reviewed
See detailInto the deep. La profondeur comme attraction dans les productions des Studios Disney
Tomasovic, Dick ULg

Conference (2013, November 08)

Depuis l’invention de la caméra multiplane en 1933 par l’ingénieur Bill Garity au sein des studios Disney, jusqu’à la création de la marque Disney Digital 3-D, en 2005, qui promeut le cinéma en relief ... [more ▼]

Depuis l’invention de la caméra multiplane en 1933 par l’ingénieur Bill Garity au sein des studios Disney, jusqu’à la création de la marque Disney Digital 3-D, en 2005, qui promeut le cinéma en relief stéréoscopique, les départements des effets spéciaux de la compagnie Disney se sont fortement investis dans la quête pour une restitution impressionnante, voire spectaculaire, de la profondeur de champ. Détaillant les illusions optiques de films aussi divers que The Old Mill (1937), Snow White and the Seven Dwarfs (1937), Bolt (2008), Alice in Wonderland (2010), ou Tron : Legacy (2011), cette intervention s’interroge également sur les présupposés idéologiques du simulacre de la profondeur chez Disney, qui se trouvent par ailleurs prolongés tant dans l’architecture des parcs à thèmes Disney que dans les dispositifs de nombre de leurs attractions. [less ▲]

Detailed reference viewed: 9 (2 ULg)
Full Text
Peer Reviewed
See detailEculizumab (ECU) Inhibits Thrombotic Microangiopathy (TMA) and Improves Renal Function in Adult Atypical Hemolytic Uremic Syndrome (aHUS) Patients (Pts)
Fakhouri, Fadi; Hourmant, Maryvonne; Campistol, Josep et al

Poster (2013, November 08)

Detailed reference viewed: 9 (0 ULg)
Peer Reviewed
See detailHéritages et stimulants à la courte histoire de la PESD/PSDC
Dumoulin, André ULg

Conference (2013, November 08)

Detailed reference viewed: 15 (0 ULg)
Full Text
See detailLa redéfinition du premier ordre au début de la Renaissance : l'exemple du cardinal d'Amboise
Dumont, Jonathan ULg

in Dumont, Jonathan; Fagnart, Laure (Eds.) Georges Ier d'Amboise. 1460-1510. Une figure plurielle de la Renaissance. Actes du colloque tenu à l'Université de Liège les 2 et 3 décembre 2010 (2013, November 08)

Detailed reference viewed: 20 (2 ULg)
See detailY avait-il vraiment des Gestalten dans L’analyse des sensations d’E. Mach ?
Zincq, Aurélien ULg

Conference (2013, November 08)

Detailed reference viewed: 7 (0 ULg)
Full Text
See detail3D analysis of gait using accelerometer measurements
Boutaayamou, Mohamed ULg; Schwartz, Cédric ULg; Stamatakis, Julien et al

Scientific conference (2013, November 07)

Detailed reference viewed: 29 (5 ULg)
Full Text
See detailVALORISATION INDUSTRIELLE ET ARTISANALE DES ARGILES DU MAROC
El Ouahabi, Meriam ULg

Doctoral thesis (2013)

Dans une perspective de développement local durable, la présente étude est focalisée sur la caractérisation des matériaux argileux du Nord du Maroc en vue de leur valorisation dans le secteur de la ... [more ▼]

Dans une perspective de développement local durable, la présente étude est focalisée sur la caractérisation des matériaux argileux du Nord du Maroc en vue de leur valorisation dans le secteur de la céramique. Elle a l’avantage de contribuer à la promotion des matériaux locaux de construction tout en améliorant la qualité des céramiques artisanales produites. Les sédiments utilisés dans cette étude proviennent de la région du nord du Maroc (Tétouan, Tanger et Meknès), ainsi que de sites argileux utilisés à l’échelle nationale dans la fabrication de la céramique traditionnelle, à savoir les sites de Fès, Salé et Safi. Dans le cadre de ce travail, nous avons procédé à une caractérisation minéralogique, granulométrique, texturale, physique, chimique, thermique et technologiques de ces argiles afin d’évaluer leurs potentialités en industrie céramique. Les argiles de Tétouan et Tanger sont caractérisées par des assemblages minéralogiques diversifiés (en particulier une proportion variable d'argile, de quartz et de calcite). En particulier, les argiles de Meknès, Fès, Salé et Safi présentent une forte teneur en argile, en quartz et en calcite. La fraction argileuse des échantillons de Tétouan et Tanger est dominée par l'illite et la kaolinite avec des proportions variables de chlorite. Ces trois types de minéraux argileux sont responsables en grande partie des propriétés céramiques favorables des échantillons d’argiles étudiées. Les matériaux argileux étudiés sont généralement constitués de fines particules d'argiles avec une plasticité moyenne à forte et une faible teneur en matière organique. Ces échantillons sont composés essentiellement de SiO2 (35 - 60 %), Al2O3 (7 - 30 %) et Fe2O3 (10 - 22 %). La quantité de CaO dans les argiles de Tanger et Meknès est très variable (0 - 30 %). Le CaO n’est présent que dans certaines argiles de Tétouan. Le taux de Fe2O3 est variable allant de 0 à 22 %. Les autres oxydes représentent de faibles proportions (< 6 %). La capacité d’échange cationique et la surface spécifique de tous les échantillons sont faibles. La masse volumique apparente, le volume poreux et le nombre de micropores sont peu variables pour toutes les argiles. Les argiles de Tétouan et de Meknès montrent globalement un bon comportement au séchage, à l’exception de quelques échantillons qui montrent des fissures superficielles au séchage due à la présence des argiles gonflantes (smectite et vermiculite). Les argiles de Tétouan et de Meknès constituent des ressources minérales industrielles de bonne qualité pour la fabrication des produits variés dont des carreaux de sol, des briques et les tuiles. Afin d’avoir de bon produit fini, ces argiles doivent êtres cuites à des températures supérieur à 1050 °C. Les argiles de Tanger montrent des propriétés conformes avec les critères de production des briques. Néanmoins, la présence de sulfates en faible quantité dans quelques échantillons carbonatés conduit après cuisson à 1000 °C à la formation de nodules blancs de sulfate de calcium (CaSO4) à la surface de la brique, résultant de la réaction de sulfates avec le CaO. Néanmoins, quelques produits cuits ont présenté un retrait à la cuisson supérieur à 10% pour de températures allant de 1100 à 1150°C et une perte en poids à la cuisson supérieur à 10%. Pour une bonne rentabilité industrielle, ces retraits peuvent être minimisés par l’ajout d’une quantité optimale de dégraissant ou en faisant des mélanges et/ ou des formulations avec d’autres argiles proche géographiquement afin d’obtenir un mélange adéquat. [less ▲]

Detailed reference viewed: 56 (12 ULg)
See detailLaïcité et neutralité de l'Etat : quels usages pour une société inclusive ?
Jacquemain, Marc ULg

Conference given outside the academic context (2013)

Présentation de la conception inclusive de la laïcité basée sur deux valeurs fondamentales, la liberté de conscience et l'égalité entre les citoyens, et sur deux dispositifs juridico-politiques ... [more ▼]

Présentation de la conception inclusive de la laïcité basée sur deux valeurs fondamentales, la liberté de conscience et l'égalité entre les citoyens, et sur deux dispositifs juridico-politiques, séparation du religieux de l'autorité publique et neutralité de l'Etat [less ▲]

Detailed reference viewed: 28 (2 ULg)
Full Text
Peer Reviewed
See detailAu-delà des interdits. Religion islamique et pratiques culinaires marocaines en Italie.
Mescoli, Elsa ULg

Poster (2013, November 07)

In many discourses about the relationship between food and Islamic religion, attention is often devoted to normative aspects: Muslims food practices are ruled by the polarization between what is halal and ... [more ▼]

In many discourses about the relationship between food and Islamic religion, attention is often devoted to normative aspects: Muslims food practices are ruled by the polarization between what is halal and what is haram to eat. In this discursive context, even if negotiations with certain requirements can be taken into account, believers would primarily incorporate a food style determined by certain feed bans. My study, without neglecting these aspects, aims at demonstrating how the semantic field of the term halal not only includes all that is not forbidden for consumption by religious norms. This field opens indeed to many instructions, coming from Islamic sources, actively and positively guiding believers in their food choices. My doctoral research, focusing on culinary practices and objects of Moroccan women in migration context, made me reconsider the Islamic religion as having an affirmative role in eating behaviours and even in food preparation. The women protagonists of my ethnography show how the choice to use certain ingredients and to prepare some meals is dictated or supported by divine guidance. My presentation will focus on the materiality of these dynamics: through images collected during my ethnography, my intention is to recount the complexity and the concreteness of the relationship between eating habits and Islam. [less ▲]

Detailed reference viewed: 23 (1 ULg)
Full Text
See detailSEDIMENTARY DEVELOPMENT AND MAGNETIC SUSCEPTIBILITY OF THE FRASNIAN CARBONATE PLATFORM IN WESTERN BELGIUM (DINANT SYNCLINORIUM, LA THURE SECTION)
Pas, Damien ULg; Da Silva, Anne-Christine ULg; Labaye, Corentin et al

in 14 ième ASF 2013 (Association des Sédimentologistes Français) (2013, November 07)

Detailed reference viewed: 33 (10 ULg)
Full Text
See detailUsing GAit Measuring System (GAIMS) to discriminate patients with multiple sclerosis from healthy person
Azrour, Samir ULg; Pierard, Sébastien ULg; Van Droogenbroeck, Marc ULg

Poster (2013, November 07)

Among voluntary movements, gait is the most affected by multiple sclerosis. Gait impairment is also a good indicator of the disease progression. However, measurement of gait character- istics made by ... [more ▼]

Among voluntary movements, gait is the most affected by multiple sclerosis. Gait impairment is also a good indicator of the disease progression. However, measurement of gait character- istics made by neurologists is usually limited to the use of a stopwatch. The GAit Measuring System (GAIMS), provides a wider range of measurements that allow the definition of several relevant gait descriptors. The work presented here shows the effectiveness of these gait descriptors and machine learning techniques to discriminate between healthy persons and patients with multiple sclerosis. [less ▲]

Detailed reference viewed: 54 (25 ULg)
See detailStudying Vulnerability: Participation and Incident Reports
Rossignol, Nicolas ULg

Conference (2013, November 07)

Scholars in many fields of research have developed models, theories and concepts attempting to grasp and manage dangers that are often difficult to concretely imagine. Their final objective is to maintain ... [more ▼]

Scholars in many fields of research have developed models, theories and concepts attempting to grasp and manage dangers that are often difficult to concretely imagine. Their final objective is to maintain the safety of the system considered. Dealing with potential hazards, some researchers distinguish between the vulnerability approach and the risk approach. The risk based approach is focused on acquiring accurate probabilistic information about the events themselves. Yet, Sarewitz (2003: 806) reminds that “there are numerous cases in which accurate assessment of risk is impossible” and that “lack of experience with many phenomena and outcomes means that understanding the uncertainty of the uncertainty estimates is impossible”. Thus, beyond the risk-based approach, another perspective emerged: vulnerability analysis (VA). Vulnerability can be described as “the degree to which a system, subsystem, or system component is likely to experience harm due to exposure to a hazard” (Turner et al. 2003: 8074). VA seems capable of overcoming the shortcomings of risk analysis in situations where knowledge about both probabilities and outcomes is incomplete or insufficient (Sarewitz 2003). The vulnerability approach and the classical risk analysis approach are thus based on different premises (Gilbert 2006): while risk analysis focuses on the hazard, VA focuses on the system under threat. From that starting point, we realized in order to analyse the state-of-the art in the field of vulnerability analysis, with particular emphasis on participatory approaches. The aims were: i) to study how the concept of vulnerability has been defined and used in different fields of application (e.g. natural and industrial hazards) and ii) to analyse whether the theoretical claim that participatory approaches to vulnerability analysis have the potential for great scientific and political outputs has been actually demonstrated in practice. Based on this study we formulate a threefold critique: first, VA has been treated separately in natural and technological hazards fields. This separation is unproductive for a fine-grained understanding of what vulnerability can provide as a concept, as it prevents vulnerability to unleash the full range of its potential. Second, VA focused on assessment tools that are mainly quantitative, whereas qualitative appraisal is a key to assess vulnerability in a comprehensive way and to inform policy-making. Third, a systematic literature review on participatory VA case studies allows us to argue that participation has been important to address the above, but it remains too closed down in its approach and would rather benefit from embracing a more opened, encompassing perspective. Therefore, we suggest re-thinking participatory VA as one part of a dynamic process between opening-up and closing-down strategies, in order to support a reflexive vulnerability governance framework. Doing so is not exempt of challenges, though. Since analytical reflection on vulnerability is to be transferred into practices of risk and vulnerability governance, taking into account the context in which governance agents need to take appropriate decisions is of primary importance. Thus, based on the conclusion of this presentation, the practical ways of realizing a reflexive vulnerability governance should now be explored. [less ▲]

Detailed reference viewed: 15 (0 ULg)
Full Text
Peer Reviewed
See detail"Climate change" and vulnerability analysis: poor will become poorer
Ozer, Pierre ULg

Conference (2013, November 07)

The recent Intergovernmental Panel on Climate Change’s Fifth Assessment Report (IPCC-AR5) considers new evidence of climate change based on many independent scientific analyses from observations of the ... [more ▼]

The recent Intergovernmental Panel on Climate Change’s Fifth Assessment Report (IPCC-AR5) considers new evidence of climate change based on many independent scientific analyses from observations of the climate system, paleoclimate archives, theoretical studies of climate processes and simulations using climate models. “Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia. The atmosphere and ocean have warmed, the amounts of snow and ice have diminished, sea level has risen, and the concentrations of greenhouse gases have increased”. “Changes in many extreme weather and climate events have been observed since about 1950. It is very likely that the number of cold days and nights has decreased and the number of warm days and nights has increased on the global scale”. “It is likely that the frequency of heat waves has increased”. “There are likely more land regions where the number of heavy precipitation events has increased than where it has decreased”. “The frequency or intensity of heavy precipitation events has likely increased”. In the meantime, it is now well known that climate change consequences (increasing magnitude and frequency of droughts, floods, storms and/or coastal erosion) will mainly impact the most vulnerable. Although there are multiple ways to define vulnerability, we here define vulnerability as the exposure of individuals or collective groups to livelihood stress as a result of the impacts of such climate change and consecutive socioeconomic and environmental changes. In the context of this paper, we will focus on natural disasters induced by “climate change”. We will travel across developing countries to illustrate the increasing vulnerability of the poor and the way they –sometimes– develop effective adaptation responses. We conclude that, for many reasons (mainly the protection of individual, financial and/or political interests), the poor will become poorer. [less ▲]

Detailed reference viewed: 19 (3 ULg)