How does engagement in reading predict digital reading proficiency among 15 year-olds?

Conference (2012, September)

In PISA 2009, 19 countries took part to an optional assessment of digital reading. In each country, a subsample of 15 year-olds was administered not only the paper and pencil PISA test, but also different ... [more ▼]

In PISA 2009, 19 countries took part to an optional assessment of digital reading. In each country, a subsample of 15 year-olds was administered not only the paper and pencil PISA test, but also different reading tasks online. The aim of our study is to investigate the relationships between engagement in reading, especially online reading practices, and digital reading proficiency of 15 year-olds in the 11 European countries which took part to this option (11 out of 19). [less ▲]

Les carrières professionnelles des cadres : regard croisé du genre et de l'âge

Conference (2012, September)

Ce papier a pour objectif de réaliser une revue de littérature qui doit permettre de construire une recherche empirique visant à apporter une vision comparative des carrières des hommes et des femmes ... [more ▼]

Ce papier a pour objectif de réaliser une revue de littérature qui doit permettre de construire une recherche empirique visant à apporter une vision comparative des carrières des hommes et des femmes cadres en regard de trois groupes d’âge : les moins de 35 ans, les [35-50] ans et les plus de 50 ans. Nous considérons les deux sexes étant donné que les trajectoires professionnelles sont influencées par le sexe de la personne ainsi que par les stéréotypes et les rôles qui y sont directement associés (genre). Les générations, quant à elles, nous permettront de tenir compte de l’évolution des facteurs de contexte que sont notamment ces rôles attribués au masculin et au féminin à travers les époques. En effet, les constructions sociales liées au sexe des individus sont susceptibles de changer d’une génération à l’autre et donc d’agir distinctement sur les intentions de carrière. Le fait d’introduire la dimension générationnelle, en plus de celle du genre, est l’occasion d’aborder le concept d’intersectionnalité qui consiste en un croisement des groupes cibles propres à la gestion de la diversité. A l’issue de cet aperçu théorique faisant état de la littérature existante relative à cette thématique des carrières des individus occupant un poste à responsabilités, nous pourrons mettre en évidence différentes questions de recherche qu’il nous faudra, dans un second temps, confronter à la réalité du terrain. [less ▲]

Saturn temperature profiles at low, medium and high latitudes derived from UVIS EUV Solar occultations

Conference (2012, September)

Tra canonizzazione della ‘norma’ ed infrazione. Sondaggi dai frammenti grammaticali latini su papiro (II-VI sec. d.C.)

Conference (2012, September)

Un projet de promotion de la santé mentale : des actions élaborées avec une association d'usagers, partenaire du projet

Conference (2012, September)

Deformation pattern at the western tip of the Corinth Rift

Conference (2012, September)

The Gulf of Corinth in Greece is an active continental rift propagating westward toward the Aegean subduction zone. GPS data shows that deformation rate reaches a maximum of 15 mm/yr at its western tip ... [more ▼]

The Gulf of Corinth in Greece is an active continental rift propagating westward toward the Aegean subduction zone. GPS data shows that deformation rate reaches a maximum of 15 mm/yr at its western tip. The style of extension and strain distribution is well documented offshore in the eastern and central parts of the rift (Bell, 2009). At its most active western extremity, published offshore data is not sufficient to characterize the deformation pattern. High resolution seismic profiles were thus acquired in that region within the framework of the SISCOR project to improve our understanding of fault evolution, seismicity and to be able to construct mechanical models of deformation. Here we investigate the spatio-temporal pattern of the basin subsidence and deposition with sparker data acquired in November 2011. Active faults and correlative time horizons were first mapped. The stratigraphy was then correlated with the eustatic sea-level curve. This sequence stratigraphic interpretation is possible because there are strong glacial-interglacial variations in the depositional environment. In fact lacustrine conditions prevail within the gulf during glacio-eustatic lowstands and are characterized by low amplitudes seismic facies. So synrift sediment isopachs over the last 12 000 and 130 000 yrs could be produced. The interpreted data allow us to: (1) compare deformation pattern at the western tip of the Gulf with the more mature central and eastern part of the Rift; (2) constrain the pattern and the timing of deformation as well as rates of faulting. Reference Bell, R. E., McNeill, L. C., Bull, J. M., Henstock, T. J., Collier, R. E. L., & Leeder, M. R., 2009. Fault architecture, basin structure and evolution of the Gulf of Corinth Rift, central Greece. Basin Research, 21(6), 824-855. doi:10.1111/j.1365-2117.2009.00401.x [less ▲]

MANAGING PUBLIC ORDER DURING

Conference (2012, September)

Successions internationales - panorama des difficultés dans les relations belgo-allemandes

Conference (2012, September)

Cette présentation fait le point sur les difficultés que présent le cadre juridique en vigueur actuellement dans les relations belgo-allemandes en matière successorale, pour mieux illustrer l'impact qu ... [more ▼]

Cette présentation fait le point sur les difficultés que présent le cadre juridique en vigueur actuellement dans les relations belgo-allemandes en matière successorale, pour mieux illustrer l'impact qu'aura le Règlement succession dont l'entrée en vigueur est prévue en 2015. [less ▲]

Use of human dried-blood spots as a minimally invasive method to assess exposure to organic pollutants

Conference (2012, September)

Distribution and identification of molecular interactions between tomato roots and bacterial biofilms

Conference (2012, September)

Some non pathogenic microorganisms evolving in the root micro-environment can trigger a positive effect on plant, increasing host defense against disease or/and directly inhibiting growth of pathogen in ... [more ▼]

Some non pathogenic microorganisms evolving in the root micro-environment can trigger a positive effect on plant, increasing host defense against disease or/and directly inhibiting growth of pathogen in soil (1). To initiate both phenomena leading to biocontrol activity, microorganisms use plant exudates to grow on roots and to produce in-situ active compounds. In Bacilli, cyclic lipopeptides of the surfactin, iturin and fengycin families represent important antibiotics involved in biocontrol (2). Recent studies in microbiology allowed a better understanding of plant microorganism interactions but few has been done at the molecular level. In this study, MALDI MS imaging has been used to study the nature of the secreted lipopeptide molecules, their relative quantity and their distribution in the root’s environment. Disinfected tomato seeds were first germinated at 28°C in sterile conditions for germination. Seedlings were then placed in Petri dish on ITO glass slide recovered with a thin layer of plant nutritive solution (Hoagland) containing 1,75% of agar and treated with freshly-grown cells of Bacillus amyloliquefaciens S499. Petri dishes were finally incubated vertically in phytotron at 28°C with a 16h photoperiod. Different root age / time of incubation were studied: 13 / 3; 13 / 7; 21 / 14 and 39 / 32. Control tomato root (without bacterial treatment) of the same ages were also analyzed (13 / 0; 21 / 0 and 42 / 0. For MALDI imaging experiments, the ITO slide was removed from the agar and dried in a dessiccator under vacuum. The matrix solution (α-cyano-hydroxycinnamic acid, 5mg/mL in ACN/0.2% TFA 70/30) was applied with an ImagePrep automated sprayer (Bruker Daltonics). An UltraFlex II TOF/TOF and a Solarix FT-ICR mass spectrometers were used to record molecular cartographies. The average mass spectra recorded around the tomato root (2-3 mm on both sides of the root) showed that lipopeptides were major compounds detected on the agar. The relative intensity of lipopeptides families varied with respect to the age of the root/biofilm system. In the 13/3 system, 3 homologues of surfactins were essentially detected (C13, C14 and C15), with very few iturins and fengycins. Their localizations were identical, whatever the considered homologue. Then the production of iturin and fengycin families increases in older systems (13/7 and 21/14) and a novel homologue of surfactin is detected (C12). Some variations in localizations within families may be observed (around the root or at the close vicinity of it in function of the considered homologue or alkali adduct). Then for the oldest system we studied, iturins and fengycins are not detected anymore and the localization of surfactins is less precise. In the 39/32 system, we also detected unknown compounds at 986.6, 1000.6, 1014.7 and 1028.7 m/z. The mass range of these compounds allied to the mass difference between two consecutive ion peaks let us think that these unknown compounds could be a new lipopeptide family. Investigations are in progress to identify these new secondary metabolites of Bacillus amyloliquefaciens. [less ▲]

SPICAM dayglow measurements: a tool to retrieve CO2 vertical density profile and exospheric temperatures

Conference (2012, September)

We analyze the behavior of the CO2+ and CO Cameron ultraviolet dayglow in the atmosphere of Mars through a large dataset of dayside grazing limb observations performed by the Spectroscopy for ... [more ▼]

We analyze the behavior of the CO2+ and CO Cameron ultraviolet dayglow in the atmosphere of Mars through a large dataset of dayside grazing limb observations performed by the Spectroscopy for Investigation of Characteristics of the Atmosphere of Mars (SPICAM) on board the Mars Express spacecraft. Limb profiles are studied to retrieve the temperature of the Martian exosphere and its variability with season, latitude and solar activity. We use a one-dimensional chemical-diffusive model to retrieve the main features of the emissions and constrain the temperature and density vertical profiles of the main components of the Martian atmosphere. [less ▲]

Saturn's temperature profiles at high, medium and low latitudes derived from UVIS occultations

Conference (2012, September)

Venus O2 night glow observations with VIRTSI/Venus Express

Conference (2012, September)

Predictive models for strength enhancements in cold-formed structural sections

Conference (2012, September)

Waste management evolution through years: evaluation of improvement using Life Cycle Assessment methodology

Conference (2012, September)

Waste is considered as a major concern of our century. New technologies and attempts to improve appeared through years. The goal of this study was to evaluate the improvement of waste management through ... [more ▼]

Waste is considered as a major concern of our century. New technologies and attempts to improve appeared through years. The goal of this study was to evaluate the improvement of waste management through the last forty years. Four steps of time and of technologies of waste treatment were evaluated in an environmental point of view using the life cycle assessment methodology. The first scenario is situated before 1970 with waste landfilling in an open dump without recuperation and valorization of gas. The second one considers the situation between 1990 and 2008 with a plant comprising grinding and sorting of waste to obtain refused derived fuel fraction (RDF) which was burnt in an incinerator, remaining waste being sent to sanitary landfill with recuperation and valorization of gas in electricity. The third one is the current one, in operation since 2009, with incineration of the whole of the residual municipal waste. The last scenario is about future considering the current installation and adding a biomethanation plant using the collected biodegradable fraction of household waste. This environmental evaluation was performed in accordance with the ISO standards 14040 and 14044 and the environmental impacts were calculated with the ReCiPe methodology. We modeled a specific plant situated in Liege using its technical and environmental reports to be as realistic as possible. Main result of this study is the improvement through years starting from the important environmental impact for the landfilling of waste in an open dump to an environmental gain for some categories with the current installation coupled with biomethanation. Global warming impact from the eighties was reduced by 9 in the years 1990-2008 and by 14 for the current scenario alone or coupled with a biomethanation plant. Some sensitivity analyses were used to evaluate the strength of assumptions with for example using a consequential LCA instead of an attributional one and modifying the electricity origin mix. An uncertainty analysis using Monte-Carlo method showed the robustness of our results. This study confirms the environmental improvement of technologies and emissions of waste management through years. [less ▲]

structural model of the mitral valve included in a cardiovascular closed loop model. Static and dynamic validation

Conference (2012, August 31)

tem familiarity and controlled associative retrieval in Alzheimer’s disease: an fMRI study.

Conference (2012, August 31)

Development and Identification of a Closed-Loop Model of the Cardiovascular System Including the Atria

Conference (2012, August 31)

Evaluation sommaire du dispositif de formation initiale à l'ULg et pistes d'amélioration.

Conference (2012, August 31)

Dans cette communication, nous présentons d'abord le dispositif de formation initiale des enseignants du secondaire supérieur dans la Fédération Wallonie-Bruxelles. Ensuite, nous épinglons quelques points ... [more ▼]

Dans cette communication, nous présentons d'abord le dispositif de formation initiale des enseignants du secondaire supérieur dans la Fédération Wallonie-Bruxelles. Ensuite, nous épinglons quelques points forts et problèmes liés à cette formation. Enfin, nous proposons des pistes de solutions pour optimiser le dispositif actuel. [less ▲]

The role of distinctiveness in person recognition from faces and voices

Conference (2012, August 30)

Objectives: When we recognize a familiar person, we can retrieve different kinds of information about her/him: semantic information (e.g. the person’s occupation), episodic information, such as a memory ... [more ▼]

Objectives: When we recognize a familiar person, we can retrieve different kinds of information about her/him: semantic information (e.g. the person’s occupation), episodic information, such as a memory of a specific occasion on which this person has previously been encountered and lexical information (i.e. the name). Recent findings indicated that semantic and episodic information retrieval is more likely to be elicited following familiar face than voice recognition. The present study was designed in order to explore the potential role of stimulus distinctiveness as an underlying factor of the face advantage. Design: The design included two within-subject factors: the stimulus domain (faces or voices) and the stimulus distinctiveness (distinctive or typical). Methods: The proportions of episodic and semantic information recalled following the recognition of famous faces and voices was assessed, using an adapted version of the Remember/Know paradigm. Results: In line with earlier results, more semantic and episodic information was retrieved from faces than voices. Moreover, semantic information was better retrieved from distinctive than typical stimuli. Nonetheless, distinctiveness impacted less than domain on the recall of semantic information, since more semantic details were retrieved from typical faces than from distinctive voices. Conclusions: These results are discussed in the light of current models of person recognition. [less ▲]

Estimation of genetic parameters for longitudinal measurements of feed intake in Piétrain sire lines

Conference (2012, August 30)

The aim of this study was to estimate the genetic parameters for longitudinal measurements of feed intake (FI) in a crossbred population of pigs to develop a genetic evaluation model for the estimation of ... [more ▼]

The aim of this study was to estimate the genetic parameters for longitudinal measurements of feed intake (FI) in a crossbred population of pigs to develop a genetic evaluation model for the estimation of breeding values for FI of Piétrain boars. Data were collected on crossbred pigs in test station in the context of the genetic evaluation system of Piétrain boars in the Walloon Region of Belgium. Trait analyzed was daily FI (DFI). Because there were no facilities to record individual DFI in the Walloon test station, individual DFI were assumed to be the total pen FI divided by the number of pigs per pen. The edited dataset consisted of 3,902 measurements of DFI recorded on 1,975 crossbred pigs from 75 purebred Piétrain sires and 150 Landrace dams from the hyperprolific Landrace K+ line. A random regression animal model with fixed effects of sex and pen, and random effects of additive genetic, permanent environment and residual was developed in this study. Random additive genetic and permanent environment effects were modeled with linear splines with knots located at 75, 100, 175 and 210 d. The mean DFI was 1.979 kg/d with a SD of 0.479 kg/d. Estimated heritability for DFI increased with age from 0.02 at 75 d to 0.30 at 210 d. Estimated genetic correlation between age decreased when age interval increased. These preliminary results are consistent with literature. However, additional research are ongoing to test alternative random regression models that should be better than using splines for longitudinal performance of DFI. Furthermore, genetic relationship between DFI and other production traits, like growth and carcass traits, must be analyzed. [less ▲]

Thermochemical conversion routes of lignocellulosic biomass

Conference (2012, August 28)

The thermo-chemical route, especially the gasification process is considered. This process converts carbonaceous biomass into combustible gas (CO, H2, CO2, CH4 and impurities) called syngas and this ... [more ▼]

The thermo-chemical route, especially the gasification process is considered. This process converts carbonaceous biomass into combustible gas (CO, H2, CO2, CH4 and impurities) called syngas and this syngas can be converted into a large range of products. Production of four of these compounds is specifically investigated: ethylene, propylene, diesel and DME. Diesel can be produced via a Fischer-Tropsch process, whereas DME (dimethyl ether) can be obtained directly or from methanol which is obtained from syngas. DME and diesel can serve as fuels in traditional motors. Syngas can also be used to produce ethylene and propylene, two building blocks for the chemical industry. An important bibliography study has been done to understand these processes in order to evaluate their environmental impacts. The Life Cycle Assessment (LCA) methodology will be used in this regard. A bibliography study on the LCA articles published in this filled has been performed and it appears that few studies have yet focused on the environmental impacts of the gasification process and production of biofuels. Most of the time, they do not use the LCA methodology or they do not take into account land use change impact and are only “well-to-tank” studies. Moreover, it seems that the production of building blocks for the chemical industry has never been investigated. During the next stages of this work, the best conversion routes of lignocellulosic biomass, in an environmental sense, will be determined. Gasification will also be compared with the fossil sector and the results will be checked by sensitivity and uncertainty analyses. The economic aspect will also be taken into account, for the better process, in an environmental view. So, the results of the full study will be a decision making tool for the industries involved in biomass valorisation and for governments. [less ▲]

Interaction between the antifungal lipopeptide fengycin and lipid membrane

Conference (2012, August 28)

Genetics of the mineral contents in bovine milk predicted by mid-infrared spectrometry

Conference (2012, August 27)

Knowing the contents of minerals in milk like Ca or Na could be interesting to improve the nutritional quality of milk and to assess the animal health status. This study had two aims: 1) development of ... [more ▼]

Knowing the contents of minerals in milk like Ca or Na could be interesting to improve the nutritional quality of milk and to assess the animal health status. This study had two aims: 1) development of mid-infrared equations for mineral contents in milk by using an approach combining multiple countries, breeds, and production systems and 2) study of the genetic variability of these traits in the Walloon Holstein dairy cattle. Samples included in the calibration set were collected in Belgium, Luxembourg and France over 5 years. The calibration set included at least 400 samples analyzed by coupled plasma atomic emission spectrometry to quantify the contents of Na, Ca, Mg, P and K. The calibration coefficient of determination ranged between 0.69 for K and 0.93 for Na. The standard error of cross-validation was 63.35, 49.24, 64.33, 7.04, and 93.22 mg/kg of milk for Na, Ca, P, Mg and K. From these results, the quantification of milk minerals by mid-infrared is feasible. These equations were applied to more than 140,000 spectral records collected from 43,797 first parity Holstein cows in 1,233 herds. The variance components were estimated using Gibbs Sampling using single trait random regression models derived from the one used for the Walloon genetic evaluation of milk production traits. First results gave a daily heritability of 0.26 for Na, 0.45 for Ca, 0.48 for P, 0.46 for Mg, and 0.41 for K. Moderate negative genetic correlations were found between Na and the other studied traits. The highest correlation (0.69) was observed between P and Mg. These results confirmed the genetic variability of these traits. Further studies will be conducted to study the relationship between these traits and other traits (e.g., production, health). [less ▲]

Estimation of Myostatin gene effects on production traits and fatty acid contents in bovine milk

Conference (2012, August 27)

Le nom et l’usage des lieux de l’habitation à Liège au XVIIIe siècle

Conference (2012, August 25)

L’histoire de l’architecture est aussi une histoire des mots. Pour peu que l’on s’y intéresse, le vocabulaire attribué à l’habitation, d’usage courant dans un espace temps donné, et le choix même des ... [more ▼]

L’histoire de l’architecture est aussi une histoire des mots. Pour peu que l’on s’y intéresse, le vocabulaire attribué à l’habitation, d’usage courant dans un espace temps donné, et le choix même des termes employés laissent transparaître une réalité historique parfois surprenante, souvent méconnue, toujours précieuse pour l’historien. Une étude menée sur le terrain liégeois du XVIIIe siècle, à travers des documents variés, manuscrits ou imprimés, textuels ou iconographiques, ajoute ainsi des saveurs à l’architecture qui s’y édifie. Le nom même donné à l’habitation peut déjà révéler toute sa consistance sociale. Ensuite, le terme attribué à chaque espace de l’habitation témoigne tantôt d’influences, le plus souvent françaises, tantôt de particularités locales ; particularités du langage et particularités des usages. Les sources permettent souvent de comprendre ces usages dévolus aux lieux qui se cachent derrière les mots, et partant de voir poindre une hiérarchie dans les maisons liégeoises. Certaines pièces semblent en effet réservées à des types précis de demeures, y assurent parfois des fonctions plus pointues. Enfin, si l’on place les textes sur une échelle chronologique, on observe que certains mots apparaissent, que d’autres s’effacent, que d’autres encore se métamorphosent ; autant de modifications du langage qui, si elles correspondent parfois à des changements dans les lieux de vie, reflètent toujours une transformation plus générale de la société de l’Ancien Régime. [less ▲]

Le débat sur la véritable nature du corail

Conference (2012, August 24)

Yvon Falise, architecte moderniste

Conference (2012, August 24)

Une bibliothèque modèle à l’Université de Liège? : le projet De Laet

Conference (2012, August 24)

Durant les années 1930, la situation des bâtiments occupés par la bibliothèque de l’Université de Liège s’avère particulièrement préoccupante. Devant la menace imminente de l’effondrement d’une partie de ... [more ▼]

Durant les années 1930, la situation des bâtiments occupés par la bibliothèque de l’Université de Liège s’avère particulièrement préoccupante. Devant la menace imminente de l’effondrement d’une partie de la bibliothèque, les autorités universitaires décident la construction d’une nouvelle bibliothèque, plus adaptée aux besoins de l’époque. Le projet est confié à l’architecte Armand De Laet. Celui-ci proposera au cours des années suivantes plusieurs versions d’un bâtiment imposant, en collaboration avec le bibliothécaire en chef de l’époque. Les hostilités du second conflit mondial empêcheront néanmoins à ce projet de voir le jour. Mis de côté au début de la guerre, ce projet sera définitivement abandonné en 1945. L’heure n’est désormais plus tant à l’esthétique et au grandiose qu’au pragmatisme et à la fonctionnalité des lieux. Les documents redécouverts récemment dans les archives de la bibliothèque permettent de retracer la conception et l’évolution de ce projet de grande envergure qui s’inscrit dans la lignée de ceux qui seront réalisés à la bibliothèque de l’Université de Gand et à la Bibliothèque Royale. [less ▲]

Survivances et métamorphoses. Les gemmes isiaques remployées au Moyen Âge et leur interprétation

Conference (2012, August 23)

L’impact des modèles de Lambert Lombard et de son entourage sur la sculpture sur pierre à Liège au XVIe siècle

Conference (2012, August 23)

La montée d’un courant esthétique italianisant à Liège, au XVIe siècle, est bien perceptible dans l’art de la sculpture sur pierre, et plus particulièrement dans la production des reliefs dits en ... [more ▼]

La montée d’un courant esthétique italianisant à Liège, au XVIe siècle, est bien perceptible dans l’art de la sculpture sur pierre, et plus particulièrement dans la production des reliefs dits en marbre noir de Theux. L’installation, dans la cité épiscopale, d’un sculpteur d’origine italienne, Nicolas Palardin, a sans doute eu un effet catalyseur, mais l’apport de cet artiste demeure difficile à cerner précisément, parce qu’aucune œuvre ne peut lui être attribuée avec certitude. En revanche, une étude attentive et systématique des reliefs conservés permet de mesurer l’empreinte profonde de la figure dominante de la Renaissance liégeoise, Lambert Lombard, et de son entourage. Nous proposerons des rapprochements inédits, jetant sur la question un éclairage nouveau. De manière plus large, nous présenterons une synthèse critique des données relatives à la production dite en marbre noir de Theux. [less ▲]

Novas tecnologias e Resiliência

Conference (2012, August 22)

Des politiques du vivant aux politiques de la nature : concepts et pratiques

Conference (2012, August 20)

Using hurdle models to create maps of prey densities in southeastern of Norway

Conference (2012, August 15)

Knowing prey distribution and density in areas where carnivores are present is an important condition to have a better understanding of carnivore movements (Karanth et al. 2004 ; Herfindal et al. 2005 ... [more ▼]

Knowing prey distribution and density in areas where carnivores are present is an important condition to have a better understanding of carnivore movements (Karanth et al. 2004 ; Herfindal et al. 2005). Southeastern of Norway has recently been recolonized by the European Lynx (Lynx lynx) and the wolf (Canis lupus) and in order to be able to predict these carnivore movements, it is important to produce detailed models of their prey abundance and habitat use. Roe deer (Capreolus capreolus), red deer (Cervus elaphus), moose (Alces alces) and mountain hare (Lepus timidus) are commonly hunted by lynx and wolf in Norway (Odden et al. 2006, Wikenros 2001, Müller 2006) but even if these species are well present in the southeastern, no distribution maps are available yet. Using hurdle models, we create the prey maps and test the extent of predictive modeling. Finally, we discuss the limits existing when trying to develop and use predictive maps at large scale. [less ▲]

A framework and approaches to develop an in-house CAT with freeware and open sources

Conference (2012, August 13)

Supporting Creative Collaboration at distance. Goals, challenges and innovative prototypes

Conference (2012, August 04)

Recepción actual de los manuscritos de Ferdinand de Saussure. Perspectivas teóricas e históricas.

Conference (2012, August 01)

Se le ha atribuido a Ferdinand de Saussure (1857-1913), a lo largo del siglo XX, la responsabilidad de más de una “revolución” [sobre la de los anagramas, ver Prosdocimi1894, p. 233]. Célebre en su época ... [more ▼]

Se le ha atribuido a Ferdinand de Saussure (1857-1913), a lo largo del siglo XX, la responsabilidad de más de una “revolución” [sobre la de los anagramas, ver Prosdocimi1894, p. 233]. Célebre en su época gracias a sus trabajos sobre el vocalismo indo-europeo (Saussure, 1879), cuyo estudio, precisamente, habría contribuido a revolucionar (Béguelin, 2003), Saussure alcanzó una difusión masiva póstumamente. El Cours de linguistique générale (1916) es así considerado por la tradición como el punto de inflexión que revolucionó (una vez más) las ciencias del lenguaje, al asumir y/o permitir un cambio de enfoque radical: el objeto de la lingüística sería no ya (o no ya solamente) la historia y la evolución de las lenguas, sino también (y sobre todo) la lengua en tanto sistema autónomo de signos (Saussure, 1916) cuya función esencial es la comunicación. Acentuando la importancia de este gesto, se erigió a Saussure en “fundador” no solamente de una escuela – el estructuralismo europeo – sino también, y más generalmente, de la lingüística moderna (cf. Culler, 1986, p. 15 ; Lyons, 1968, p. 38 ; Calvet, 1995, p. 507). El descubrimiento en 1996 de un nuevo fondo de manuscritos, parcialmente publicado en 2002 en los Écrits de linguistique générale, proporcionó a algunos lingüistas la ocasión de postular una nueva revolución: los manuscritos de Saussure, desenterrados un siglo después de haber sido escritos, contendrían potencial suficiente para conmocionar y restructurar (“bouleverser”) no sólo la lingüística contemporánea (Bouquet, 2004; Rastier, 2009), sino también las bases de la metafísica occidental (cf. Rastier, 2009). El propósito de este trabajo es el de revisar críticamente (si no de desactivar) los argumentos subyacentes a tal posición, para intentar de ese modo establecer cuáles son los criterios (¿biográficos, históricos, teóricos, filológicos?) que la sostienen. Intentaremos mostrar, en particular, que la apreciación de la importancia de un fondo de manuscritos científicos, como lo son en gran medida los de Saussure, no puede prescindir de una aproximación histórica, cuya carencia es evidente, justamente, en gran parte de los partidarios saussureanos (incluidos Rastier y Bouquet) de una nueva (o potencial) “revolución”. [less ▲]

Impact of sensor and measurement timing errors on model-based insulin sensitivity

Conference (2012, August)

Optimized deposition of TiO2 thin films produced by a non-aqueous sol–gel method and quantification of their photocatalytic activity

Conference (2012, August)

Determination of the composition of cryolitic melts involved in the Hall-Heroult process by Raman spectroscopy

Conference (2012, August)

Considering our experience in the study of such highly corrosive media by Raman spectroscopy and since the bath spectrum is function of the molar NaF/AlF3 ratio and the Al2O3 content, we have proposed in ... [more ▼]

Considering our experience in the study of such highly corrosive media by Raman spectroscopy and since the bath spectrum is function of the molar NaF/AlF3 ratio and the Al2O3 content, we have proposed in the past to apply that technique to the direct determination of the melt composition . Recent instrumental developments on CCD based spectrometers have made the proposed method more feasible. This presentation will first demonstrate that, employing an updated instrument provided with new optical filters and a more sensitive CCD detector, better quality spectra are obtained. Afterward, new results relevant to the development of our analytical method for the direct determination of the molar NaF/AlF3 ratio and the Al2O3 content in cryolitic melt will be discuss. Different aspects of the calculation procedure will be illustrated:  Estimation and subtraction method of the Rayleigh decay from melt spectra;  Development of an internal normalisation procedure based on equilibria in the melt and assisted by home-made software;  Establishment of calibration curves for the determination of the molar ratio NaF/AlF3 in the melt;  Establishment of calibration curves for the determination of oxide content in the melt;  Overall procedure for the composition determination. [less ▲]

Grave Soils Analysis by TD-GCxGC-TOFMS

Conference (2012, August)

Être femme en contexte postcolonial africain et être confronté à la succession : au-delà des aspects juridiques, vécu et gestion psychosociaux.

Conference (2012, August)

L’Afrique postcoloniale francophone vit le cinquantenaire de son indépendance dans un contexte de dualité de normes successorales (tradition vs. modernité). Si l’expert du droit dit comment les conflits ... [more ▼]

L’Afrique postcoloniale francophone vit le cinquantenaire de son indépendance dans un contexte de dualité de normes successorales (tradition vs. modernité). Si l’expert du droit dit comment les conflits (résiduels, virtuels et habituels) qui en résultent sont gérés, le vécu intrinsèque des victimes lui importe peu. Cette communication, issue de nos travaux de thèse (Ph.D) en psychologie sociale sur l’éveil, le vécu et la gestion de la dissonance cognitive en contexte postcolonial africain, rend compte d’une sélection de réponses des femmes camerounaises, 382, victimes de l’opposition entre les normes du droit moderne et celles du droit traditionnel en rapport avec la jeune fille et la veuve. À l’occasion, les différences anthropologiques fondatrices des visions du monde traditionnelle et moderne de la succession permet d’identifier les points de contrastes entre les deux normes et de comprendre le malaise qui en résulte socioculturel. Au terme des analyses statistiques, les résultats indiquent que ces femmes souffrent de l’inconfort psychologique, des affects négatifs liés à soi, des affects liés à l’anxiété, des affects négatifs liés à soi et aux autres et, curieusement des affects positifs. La gestion de ces affects passe entre autres par la revalorisation de la tradition et de la modernité, l’évitement des situations aggravantes, le partage social des émotions, le prosélytisme et la confusion entre la tradition et la modernité. L’embarras place ainsi la gent féminine dans un embarras qui déteint sur leur rapport à elle et sur leurs rapports aux autres. Il urge conséquemment de voir le projet de code de la famille et des personnes prendre corps en partant d’un effort de conciliation des différences relevées entre les deux en jeu. [less ▲]

Quel est le niveau des apprentissages réalisés par des enfants avec TED scolarisés en enseignement primaire ordinaire en ce qui concerne les matières de base ?

Conference (2012, August)

UV radiation effects on liquid crystal variable retarders for aerospace applications

Conference (2012, August)

Liquid-Crystal Variable Retarders (LCVRs)1 are optical devices that provide a variable optical retardance accomplished by the application of electric fields. Traditionally, they have been used as light ... [more ▼]

Liquid-Crystal Variable Retarders (LCVRs)1 are optical devices that provide a variable optical retardance accomplished by the application of electric fields. Traditionally, they have been used as light polarization modulators for polarimetric applications in ground telescopes2, and more recently they took part in the polarisation modulation package of the Imaging Magnetograph eXperiment (IMaX)3, where the LCVRs were launched successfully on-board the Sunrise mission, a stratospheric balloon that was flown from Antarctica to study the solar magnetic fields. This mission was the precursor of the Solar Orbiter mission of the European Space Agency (ESA), where the liquid crystals will be used as polarisation modulators onboard a space mission for the first time in two instruments: the Polarimetric and Helioseismic Imager (SO/PHI) and the Multi-Element Telescope for Imaging and Spectroscopy (METIS). Any on-board element used for aerospace applications must be able to survive the harsh environmental space conditions including UV radiation, gamma radiation, vibrational tests, thermal-vacuum... In this sense, LCVRs have been recently validated to be used under the space conditions of the Solar Orbiter mission, in the framework of the ESA project: “Validation of LCVRs for the Solar Orbiter Polarisation Modulation Package”. In this project, a set of LCVRs with different design parameters has been analyzed under the different space environmental conditions. These design parameters include the architecture of the LCVR cell, using Anti-Parallel Aligned Nematic (APAN) and Hybrid Aligned Nematic (HAN) architectures, the type of liquid crystal molecules, using different commercial nematic liquid crystal mixtures with high and low birefringence and positive and negative dielectric anisotropy, different homogeneous and homeotropic polyimide alignment layers and different glass plates. Among the space environmental components, the UV radiation needs special consideration due to the organic nature of the liquid crystal molecules and the alignment layers that consisted of rubbed polyimide layers. In this work, we present the main results of the UV radiation test campaign carried out in the LCVRs consisting of the performance of a thorough optical characterization of the LCVRs, including optical retardance and response times measurements at different voltages performed by the ellipsometry technique, and optical transmission measurements, before and after irradiating the LCVRs with UV light at different doses, in two different spectral ranges: 200 -400 nm and 160-200 nm. The main degradation effects observed in the LCVRs was a progressive reduction of the retardance range of the LCVRs which points out a decrease of the birefringence of the liquid crystal molecules or the increase of the pretilt angle due to the degradation of the polyimide layers, and an increase of the response times of the cells. Nevertheless, the changes observed do not involve the destruction of the LCVRs and they keep fulfilling the requirements for the Solar Orbiter mission becoming in a promising technology for aerospace applications. [less ▲]

Proteomics of aphid salivary proteins

Conference (2012, August)

Insulin Kinetics during Hyper-Insulinemia Euglycemia Therapy (HIET)

Conference (2012, August)

Automates et systèmes de numération

Conference (2012, August)

Ce cours d'1h30 est accessible à un grand public de mathématiciens, y compris les enseignants du secondaire. Je commencerai par définir ce que sont les automates finis. J'introduirai les systèmes de ... [more ▼]

Ce cours d'1h30 est accessible à un grand public de mathématiciens, y compris les enseignants du secondaire. Je commencerai par définir ce que sont les automates finis. J'introduirai les systèmes de numération en général. Je m'attarderai sur le cas des bases entières, et montrerai les propriétés remarquables de calculs dans ces bases, notamment le calcul de l'addition et de la multiplication par une constante par automate fini. Ensuite, j'étendrai ces considérations à des numérations dites non-standard et aux systèmes de Pisot. Enfin, je définirai les numérations abstraites. [less ▲]

The formation of sdB stars. Influence of substellar bodies on late stages of stellar evolution

Conference (2012, August)

Montrer l'invisible. Recherches sur la mise en image de la présence divine dans la céramique grecque

Conference (2012, August)

Do Mutual Fund Investors Still Trust Standard Risk-Adjusted Performance Measures?

Conference (2012, August)