Last 7 days
Bookmark and Share    
Full Text
See detailAlignments of quasar axes with large-scale structures
Hutsemekers, Damien ULg; Braibant, Lorraine ULg; Pelgrims, Vincent ULg et al

Poster (2015, March)

Based on measurements of optical linear polarization of quasars belonging to large groups at redshift z ~ 1.3, we found that quasar spin axes are likely parallel to their host large-scale structures ... [more ▼]

Based on measurements of optical linear polarization of quasars belonging to large groups at redshift z ~ 1.3, we found that quasar spin axes are likely parallel to their host large-scale structures (Hutsemékers et al. 2014). These observations can constrain models of the coevolution of AGN, galaxies and large-scale structures. [less ▲]

Detailed reference viewed: 22 (4 ULg)
Full Text
See detailEquipements remarquable: Passeport santé pour bananier
Massart, Sébastien ULg

in 15e Jour du Mois (Le) (2015), (242),

Detailed reference viewed: 15 (4 ULg)
Full Text
Peer Reviewed
See detailAnalyse des sauts et de la course à pied par accélérométrie
Laffaye, Guillaume; Jidovtseff, Boris ULg

in Arfaoui, Ahlem; Bertucci, William (Eds.) Métrologie en biomécanique (2015)

The goal of this article is to understand the interests and limits of the accelerometry for assessing the performance in sport. More specifically, accelerometers are used during jumping tests (squat jump ... [more ▼]

The goal of this article is to understand the interests and limits of the accelerometry for assessing the performance in sport. More specifically, accelerometers are used during jumping tests (squat jump, countermovement jump, hopping on place test) to measure jump height, power, force and leg stiffness as well. During running, they are used for assessing velocity, step frequency, and other useful parameters for trainers or scientists in the understanding of this mode of locomotion. [less ▲]

Detailed reference viewed: 43 (8 ULg)
Full Text
See detailMEXIQUE : CONSÉQUENCES DE LA MIGRATION INTERNATIONALE SUR L’ÉDUCATION DES ENFANTS
Zuniga, Victor; Vivas Romero, Maria ULg

in Gemenne, François (Ed.) Migration Internationales: Un enjeu Nord-Sud? (2015)

Les rapports entre expérience migratoire aux Etats-Unis, séparation familiale, éclatement des parcours scolaires et aspirations éducatives des enfants et adolescents mexicains sont à la fois étroits et ... [more ▼]

Les rapports entre expérience migratoire aux Etats-Unis, séparation familiale, éclatement des parcours scolaires et aspirations éducatives des enfants et adolescents mexicains sont à la fois étroits et pluridirectionnels. Cette étude n’aide pas seulement les chercheurs à comprendre le phénomène, elle devrait également permettre de préconiser des mesures politiques susceptibles de bénéficier tant aux parents transnationaux qu’aux enfants. [less ▲]

Detailed reference viewed: 45 (2 ULg)
Full Text
See detailRecherche concernant les formations initiales des professionnel(le)s de l’enfance (0-12 ans) et des équipes d’encadrement. À la découverte d’autres systèmes éducatifs européens : Flandre
Francois, Nathalie ULg; Pools, Elodie ULg; Pirard, Florence ULg

Report (2015)

Ce rapport a été produit dans le cadre d'une recherche-action, menée en Fédération Wallonie Bruxelles (Belgique) de novembre 2013 à juin 2015, et qui propose un cadre de réflexion pour repenser les ... [more ▼]

Ce rapport a été produit dans le cadre d'une recherche-action, menée en Fédération Wallonie Bruxelles (Belgique) de novembre 2013 à juin 2015, et qui propose un cadre de réflexion pour repenser les formations initiales dans le champ de l'accueil de l'enfance (0-12 ans) inscrites dans un système compétent (Urban et al., 2011) en tenant compte des recommandations internationales, des savoirs scientifiques, des valeurs, de l’analyse d’expériences européennes de référence dans le domaine. Ce deuxième rapport est centré sur le cas de la Flandre où une série de réformes ont été engagées, dont certaines sont encore en cours actuellement. Citons la parution en septembre 2014 du premier curriculum socio-psycho-pédagogique pour l’accueil de la petite enfance et en matière de formation, depuis l’année académique 2011-2012, l’implémentation d’une formation coaching (bachelier en pédagogie du jeune enfant 0-12 ans - Bachelor pedagogie van het jonge kind) alliant approche éducative et sociale dans l’accueil 0-12 ans. Ce rapport fait suite à celui consacré à la France. Deux autres rapports porteront ensuite sur le cas de l'Angleterre et de la Suède. La partie des rapports consacrées à une analyse des consultations des participants à partir des systèmes européens reste à usage interne et n'est pas diffusée. [less ▲]

Detailed reference viewed: 32 (10 ULg)
Full Text
See detailThe inevitable downfall of the Belgian electrical power industry?
Ernst, Damien ULg

Speech/Talk (2015)

Detailed reference viewed: 79 (8 ULg)
Full Text
See detailLaTeX, un peu, beaucoup (7. Tableaux (encore))
Dupont, Pascal ULg

in Losanges (2015), 28

Detailed reference viewed: 15 (1 ULg)
Full Text
See detailREPORT OF THE EGOLF ROUND-ROBIN NR. TC2 14-1 IN FIRE RESISTANCE TESTING
Dumont, Fabien ULg; Boström, Lars; Łukomski, Marek et al

Report (2015)

This document reports the statistical analysis conducted on the raw data issued from the TC2 14-1 round-robin performed by 16 fire testing laboratories members of EGOLF. The test specimen is a HEB300 hot ... [more ▼]

This document reports the statistical analysis conducted on the raw data issued from the TC2 14-1 round-robin performed by 16 fire testing laboratories members of EGOLF. The test specimen is a HEB300 hot rolled steel beam tested according to EN 1365-3. [less ▲]

Detailed reference viewed: 14 (4 ULg)
See detailMeasuring nonlinear distortions: from test case to an F-16 fighter
Vaes, Mark; Schoukens, Johan; Rolain, Yves et al

Conference (2015, March)

What are the similarities and differences between the behavior of a small vibrating test system and an F-16 fighter? To find it out, we compare measurements of the test system to measurements from the ... [more ▼]

What are the similarities and differences between the behavior of a small vibrating test system and an F-16 fighter? To find it out, we compare measurements of the test system to measurements from the bolted connection of the wing and the missile of a F-16 Fighter Falcon from the Belgian air force. These measurements were done during a ground vibration test (GVT) campaign. Essentially, the behavior of these systems match, even though the test system is only the heart of a self-study kit for nonlinear system identification and the F-16 is a complex real life mechanical structure. This clearly shows the added value of an experiment driven nonlinear educational system identification package. It provides safe small-scale toy examples for hands-on exercises that react like real systems. We believe that this practical approach lowers the gap between learning system identification concepts and applying it on real systems. [less ▲]

Detailed reference viewed: 40 (13 ULg)
Full Text
Peer Reviewed
See detailÉvaluation et analyse de la performance par accélérométrie lors des mouvements de musculation
Jidovtseff, Boris ULg; Laffaye, Guillaume

in Arfaoui, Ahlem; Bertucci, William (Eds.) Métrologie et biomécanique (2015)

Since a decade, the accelerometry allows new measurements in biomechanics of sport. Small, light and transportable, these sensors allow to liberate from heavy force plates and offers new perspectives in ... [more ▼]

Since a decade, the accelerometry allows new measurements in biomechanics of sport. Small, light and transportable, these sensors allow to liberate from heavy force plates and offers new perspectives in the understanding of the performance in sport. The goal of this chapter is to present the concept of the accelerometry and to understand practical possibilities and limits in the assessment of muscular performance. The reliability of the accelerometers are highly depending on the level of technology and in the respect of manufacturer recommendations. These devices are used during exercises such as bench press or squat, allowing to analyze force-velocity-power profile, to estimate the 1-RM, to achieve biomechanical analysis or to track free weight exercises during work out. All of these applications are very precious for scientists and for coaches during training program or athletes follow-up. [less ▲]

Detailed reference viewed: 36 (7 ULg)
Full Text
Peer Reviewed
See detailLes forces de la négation dans l’image
Dondero, Maria Giulia ULg

in Acquarelli, Luca (Ed.) Au prisme du figural. Le sens des images entre forme et force (2015)

Ce texte vise à décrire un type particulier de forces inhérentes à la configuration de l’image. Il s’agit de forces qui mettent en crise la figuration et le caractère affirmatif de l’image, en les ... [more ▼]

Ce texte vise à décrire un type particulier de forces inhérentes à la configuration de l’image. Il s’agit de forces qui mettent en crise la figuration et le caractère affirmatif de l’image, en les détournant et en les rendant « hésitants ». Nous souhaitons démontrer que l’image n’est pas contrainte d’affirmer ce qu’elle met en scène : elle a également la capacité de le nier. La négation par l’image représente à nos yeux un défi majeur pour les sémioticiens du visuel et les théoriciens de l’art, notamment dans le cadre de recherches sur le langage de l’image, le métalangage visuel et, plus généralement, sur les capacités de l’image à développer un discours autonome par rapport au discours verbal [less ▲]

Detailed reference viewed: 36 (5 ULg)
Full Text
Peer Reviewed
See detailMagnetosphere-ionosphere mapping at Jupiter: Quantifying the effects of using different internal field models
Vogt, Marissa; Bunce, Emma; Kivelson, Margaret et al

in Journal of Geophysical Research. Space Physics (2015), 120

The lack of global field models accurate beyond the inner magnetosphere (<30 RJ) makes it difficult to relate Jupiter's polar auroral features to magnetospheric source regions. We recently developed a ... [more ▼]

The lack of global field models accurate beyond the inner magnetosphere (<30 RJ) makes it difficult to relate Jupiter's polar auroral features to magnetospheric source regions. We recently developed a model that maps Jupiter's equatorial magnetosphere to the ionosphere using a flux equivalence calculation that requires equal flux at the equatorial and ionospheric ends of flux tubes. This approach is more accurate than tracing field lines in a global field model but only if it is based on an accurate model of Jupiter's internal field. At present there are three widely used internal field models—Voyager Io Pioneer 4 (VIP4), the Grodent Anomaly Model (GAM), and VIP Anomaly Longitude (VIPAL). The purpose of this study is to quantify how the choice of an internal field model affects the mapping of various auroral features using the flux equivalence calculation. We find that different internal field models can shift the ionospheric mapping of points in the equatorial plane by several degrees and shift the magnetospheric mapping to the equator by ~30 RJ radially and by less than 1 h in local time. These shifts are consistent with differences in how well each model maps the Ganymede footprint, underscoring the need for more accurate Jovian internal field models. We discuss differences in the mapping of specific auroral features and the size and location of the open/closed field line boundary. Understanding these differences is important for the continued analysis of Hubble Space Telescope images and in planning for Juno's arrival at Jupiter in 2016. [less ▲]

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailTensor Representation of Spin States
Giraud, Olivier; Braun, Daniel; Baguette, Dorian ULg et al

in Physical Review Letters (2015), 114

We propose a generalization of the Bloch sphere representation for arbitrary spin states. It provides a compact and elegant representation of spin density matrices in terms of tensors that share the most ... [more ▼]

We propose a generalization of the Bloch sphere representation for arbitrary spin states. It provides a compact and elegant representation of spin density matrices in terms of tensors that share the most important properties of Bloch vectors. Our representation, based on covariant matrices introduced by Weinberg in the context of quantum field theory, allows for a simple parametrization of coherent spin states, and a straightforward transformation of density matrices under local unitary and partial tracing operations. It enables us to provide a criterion for anticoherence, relevant in a broader context such as quantum polarization of light. [less ▲]

Detailed reference viewed: 33 (16 ULg)
Peer Reviewed
See detailNœuds de Savoie et cordelières de Louise de Savoie
Fagnart, Laure ULg

Conference (2015, February 27)

Comtesse puis duchesse d’Angoulême, Louise de Savoie (1476-1531) est l’une des personnalités les plus influentes de la première Modernité européenne. Elle n’est pas seulement la mère de deux enfants ... [more ▼]

Comtesse puis duchesse d’Angoulême, Louise de Savoie (1476-1531) est l’une des personnalités les plus influentes de la première Modernité européenne. Elle n’est pas seulement la mère de deux enfants illustres, Marguerite, future reine de Navarre, et François, futur François Ier, elle est aussi la sœur de Philibert II le Beau, duc de Savoie. Une fois son fils monté sur le trône de France, Louise domine le Conseil et assure, à deux reprises, la régence du royaume. Son action concerne encore les arts et les lettres : amatrice d’objets d’art et bibliophile avertie, elle demande à Léonard de Vinci d’imaginer une ville et un palais neuf à Romorantin, participant de la sorte à la diffusion en France des idées et des formes venues d’Italie. Curieusement, alors que son influence fut considérable, Louise de Savoie n’a pas fait l’objet d’une monographie récente (un ouvrage collectif à son propos paraîtra toutefois en 2015). Son emblématique n’a plus été analysé depuis les travaux d’Anne-Marie Lecocq (1987), qui s’était essentiellement concentrée sur les signes présents dans les livres qu’elle commanda pour soutenir l’éducation de ses enfants. À l’occasion de cette communication – prolongeant ainsi une recherche entreprise avec Pierre-Gilles Girault – nous voudrions revenir sur le discours héraldique de Louise de Savoie, en explicitant l’une de ses devises favorites, la cordelière. Pour la mère de François Ier, la corde à plusieurs nœuds revêt plusieurs significations. D’abord, puisqu’elle se compose de nœuds de Savoie, un emblème largement diffusé au début du XVIe siècle, notamment sous l’influence de Philibert II le Beau et Marguerite d’Autriche, elle souligne l’appartenance de la dame à la maison de Savoie. Ensuite, et ce de façon inédite au sein de la maison de Savoie, la cordelière de Louise associe nœuds de Savoie et cordon franciscain, une référence que nous proposons d’expliquer non pas uniquement, comme on le fait traditionnellement, par les liens prétenduement étroits qui reliaient la mère de François Ier avec l’ordre des Franciscains. Pour Louise, il s’agit sans doute aussi de se situer dans la lignée d’Anne de Bretagne, à laquelle la cordelière est indéniablement liée. [less ▲]

Detailed reference viewed: 17 (1 ULg)
Full Text
See detailGian Matteo Giberti et les lettres à travers la correspondance de jeunesse
Valenti, Gianluca ULg

Conference (2015, February 27)

Detailed reference viewed: 17 (3 ULg)
Full Text
See detailWho’s the gatekeeper? Ensuring and Legitimating a Participatory Decision-Making Process in the context of Nuclear Waste Management
Parotte, Céline ULg

Conference (2015, February 27)

In Belgium, Nuclear Waste Management (NWM) is conducted by a Federal Agency called ONDRAF - i.e. the “National Agency for Radioactive Waste and Enriched Fissile Materials”. Adhering to a largely accepted ... [more ▼]

In Belgium, Nuclear Waste Management (NWM) is conducted by a Federal Agency called ONDRAF - i.e. the “National Agency for Radioactive Waste and Enriched Fissile Materials”. Adhering to a largely accepted vision, NWM is considered by ONDRAF as a long-term and complex issue, consisting in technical, social, economic and ethical questions. In this respect, scientific literature invites to clarify and address those aspects in a decision-making process that could benefit from meaningful public participation (Callon, Lascoumes, and Barthes 2001). In this context, many stakeholders (e.g. citizens, researchers, industrialists, civil society organizations, the European Union... and ONDRAF itself) are in demand of a “conductor” that can organize, ensure and legitimize such a participatory decision-making process. Many questions emerge from this demand. Who can be the gatekeeper of this process? What could be his role? For which purposes? In addition to that, how should participation be organized/assessed/controlled? To that regard, the purpose of this paper is twofold. First, I elaborate a possible definition of “gatekeeping a participatory decision-making process concerning NWM in Belgium”. Second, I question the possible role of Technology Assessment (TA) - as an institution as well as a set of approached - in this context. To address those questions, I rely on a combination of theoretical and empirical materials – i.e. semi directive interviews with policy makers and members of Belgian and French agencies in charge of NWM. [less ▲]

Detailed reference viewed: 11 (0 ULg)
Peer Reviewed
See detail"Mimer le savoir pour mieux le miner : le guide pratique selon Pierre La Police"
Belloi, Livio ULg

Conference (2015, February 27)

En s'appuyant sur "Nos meilleurs amis et l'acte interdit" (Cornelius, 2011, 4e édition), la présente communication examine le traitement parodique que le dessinateur français Pierre La Police réserve au ... [more ▼]

En s'appuyant sur "Nos meilleurs amis et l'acte interdit" (Cornelius, 2011, 4e édition), la présente communication examine le traitement parodique que le dessinateur français Pierre La Police réserve au discours à caractère encyclopédique ou didactique. Dans son rapport distancié et facétieux au savoir, Pierre La Police creuse le sillon ouvert par Gustave Flaubert et son fameux "Dictionnaire des idées reçues". [less ▲]

Detailed reference viewed: 6 (0 ULg)
Full Text
See detail3D human motion analysis based on ultra-low resolution sensors
Pierard, Sébastien ULg

Scientific conference (2015, February 27)

Detailed reference viewed: 16 (0 ULg)
Peer Reviewed
See detailComparison of early stages of colorectal cancer by label free proteomics
QUESADA CALVO, Florence ULg; MEUWIS, Marie-Alice ULg; Bertrand, Virginie ULg et al

in Acta Gastroenterologica (2015, February 27)

Introduction and objectives: Colorectal cancer (CRC) is the second most frequent cancer in women and the third in men. Identification of the mechanisms of progression in these early CRC stages is ... [more ▼]

Introduction and objectives: Colorectal cancer (CRC) is the second most frequent cancer in women and the third in men. Identification of the mechanisms of progression in these early CRC stages is important to develop new diagnostic and therapeutic tools. Formalin-Fixed Paraffin-Embedded (FFPE) specimens are materials that enable proteomic clinical research. Hence our aim was to address the comparison of FFPE samples from early CRC stages patients using shotgun proteomic analysis. Methods: We performed a retrospective study on 36 CRC tissue samples (pT1N0M0, n=16 and pT2N0M0, n=20) compared together and with 40 control tissue samples (20 patients with diverticulitis, using paired inflamed (DI) and healthy tissue (DH)). Each tissue slice was macrodissected to enrich in epithelial cells. We used FFPE-FASP kit (Expedeon) for sample preparation and protein digests were analyzed using 2D-nanoAquity UPLC separation online with Q-Tof Synapt HDMSTM G2 using ion mobility as additional separation. We performed protein identification and differential analysis using Progenesis QI for proteomics (Nonlinear Dynamics). Results and discussion: We selected 149 proteins differentially distributed between T1 and T2 CRC stages which were not significantly different between CRC and DH or DI. Only 30 proteins were significantly more abundant in T1 versus T2 and 119 were distributed inversely, with a minimum fold ratio of 2. Among those, ATP synthase subunit beta, Aspartate-tRNA ligase, Haptoglobin and Kininogen were identified. . Moreover, we validated Kininogen and 3 others proteins with a significant differential distribution between pT1N0M0 and pT2N0M0 stages by immunohistochemistry. Conclusion: This FFPE retrospective study comparing T1 and T2 CRC highlighted proteins already previously identified as potential CRC biomarkers. These proteins may reflect important early changes in cancer development and may help understanding early tumor progression. [less ▲]

Detailed reference viewed: 60 (7 ULg)