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See detailEffets respiratoires de l'anesthésie locorégionale
Brichant, Jean-François ULg

Conference (2010, September 07)

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See detailThe pulling force of a synthetic molecular machine
Lussis, Perrine ULg; Svaldo-Lanero, Tiziana; Willet, Nicolas ULg et al

Conference (2010, September 07)

The widespread utilization of sub-molecular motion in key biological processes is inspiring chemists who synthesize molecular machines able to imitate the machinery of biological world. It has been proved ... [more ▼]

The widespread utilization of sub-molecular motion in key biological processes is inspiring chemists who synthesize molecular machines able to imitate the machinery of biological world. It has been proved possible to design synthetic molecular systems in which positional displacements of sub-molecular components occur upon the application of external stimuli.1-3 The architecture of synthetic systems is crucial to translate molecular level effects into a useful response exploitable in the macroscopic world. Pioneering works1-2 have shown that rotaxanes (molecules consisting of a ring threaded onto an axle capped with bulky end-stoppers) are a particularly promising kind of synthetic 'molecular shuttles'. Although nanodevices based on molecular machines have been conceived, there is a huge gap between those exploratory studies and truly functional systems, able to use an external source of energy to induce a directional motion and perform useful tasks.4 One of the major challenges is the interfacing between the molecular machines and the outside world. Here we to demonstrate the feasibility of transducing sub-molecular movements into mechanical work by combining the controlled translational motion of the ring in a rotaxane coupled to a polymer chain, and the ability of AFM-based single molecule force spectroscopy to be used as a mechanical device.5 For that purpose, a rotaxane with a long thread and two stations onto which the ring can bind through H-bonds was synthesized. We have attached a polymer chain to the ring and the resulting system was grafted onto substrates. We then fished the polymer chain with an AFM tip and realized single molecule pulling-relaxing cycles. The ring was moved away from the most stable station along the thread and was found to shuttle back to this station against the external force, thus delivering mechanical work against the AFM cantilever. We have estimated the work done by the ring and show that the value is in good agreement with predicted theoretical values.2 1 J.F. Stoddart et al., Special Issue on Molecular Machines, Acc. Chem. Res. 2001, 34, 409-522. 2 E R Kay, D A Leigh and F Zerbetto, Angew. Chem. Int. Ed. 2007, 46, 72. 3 D. A. Leigh et al., Nature 2000, 406, 608; Science 2001, 291, 2124; Nature 2003, 424, 174; Science 2004, 306, 153; Nature 2006, 440, 286; Nature 2007, 445, 523; Nature 2009, 458, 314. 4 W. R. Browne, B. L. Feringa, Nature Nanotech. 2006, 1, 25. 5 H. E. Gaub et al., Science 2002, 296, 1103. [less ▲]

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See detailMigration and climate change: an escape from environmental determinism
Gemenne, François ULg

Conference (2010, September 04)

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See detailMultiple sources in the copularization of become
Petré, Peter ULg

Conference (2010, September 04)

Multiple sources in the copularization of become This paper shows how general productivity (see Barðdal 2009: 38) of the copular function of the verb become abruptly followed when a pre-copular stage had ... [more ▼]

Multiple sources in the copularization of become This paper shows how general productivity (see Barðdal 2009: 38) of the copular function of the verb become abruptly followed when a pre-copular stage had reached a threshold value about 1150, prior to which become only occurred with a spatial sense ‘arrive’, and with extensions of this sense. It is argued that this abrupt switch to general productivity rather than a gradual increase in productivity results from the fact that copular become is not the end result of a single diachronic lineage of constructions (i.e. a simple grammaticalization process, see Croft 2000: 32-37), but instead resulted from an interaction between lineages, as well as external influence, and from the coming together of all factors involved in the twelfth century. First, certain constructions in which become occurred gradually changed and interacted with each other. In a first stage, two constructions developed (through metaphor) out of become ‘arrive’. These are the constructions in (1), with a human subject and become meaning ‘attain’, and in (2), with an inanimate subject, a dative experiencer and become meaning ‘come upon’. (1) Heo becom to soþum wisdome. ‘She attained to true wisdom.’ (2) Seo þearlwisnis þæs heardan lifes him becwom. ‘The austerity of life came upon him.’ In a second stage a two-participant resultative construction, as in (3), developed as a syntactic blend of (1) and (2) (cf. De Smet 2009: 1747), which provided a formal template for a one-participant prepositional copular construction as in (4). (3) Andetnysse him becumeð to hæle ‘Confession results (for him) in salvation’ (4) Þii fader bi-com to one childe ‘Your father turned into a child.’ Another, unrelated construction provided a formal template for the adjectival copular construction. This is the depictive construction given in (5), in which an adjective serves as a secondary predicate, but become does not have a linking function (is not a copula). (5) He gesund becom to Æðelingege. ‘He arrived (and was) safe at Æðelinge.’ Second, the already existing copula weorðan ‘become’ (see Petré & Cuyckens 2009) provided a template of general productivity upon which the resultative construction could graft once it had become semantically sufficiently similar to a copular construction, and, once the copular stage was reached, the depictive construction also started to serve as a formal input for this analogical process, with as a result adjectival and nominal copular constructions. Finally, Old French probably also contributed (though only as a strengthening factor) to the success of copular become in precisely the twelfth century. From a balanced explanation taking into account all of these factors it is concluded that the sudden emergence of copular becuman is not as catastrophic as it at first seemed. References Barðdal, Jóhanna. 2009. Productivity: Evidence from case and argument structure in Icelandic (Constructional Approaches to Language 8). Amsterdam: John Benjamins. Croft, William. 2000. Explaining language change: an evolutionary approach. London: Longman. De Smet, Hendrik. 2009. Analysing reanalysis. Lingua 119: 1728-1755. Petré, Peter & Hubert Cuyckens. 2009. Constructional change in Old and Middle English Copular Constructions and its impact on the lexicon. Folia Lingistuica Historia 30: 311-365. [less ▲]

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See detailAdaptative struggle in "institutions of knowledge" : constructing internal orders in the chaos of social transformation
Fallon, Catherine ULg

Conference (2010, September 04)

Since the 19th century, universities are the locus of most public research in Belgium, with a ongoing interaction with industry. After WWI, a group of industrialists succeeded launching a privately ... [more ▼]

Since the 19th century, universities are the locus of most public research in Belgium, with a ongoing interaction with industry. After WWI, a group of industrialists succeeded launching a privately financed "Research Council", the FNRS (Fondation Nationale de la Recherche Scientifique) with the support of the highest political authority, King Albert 1st. Historians (Halleux & Xhayet, 2008) documented how this specific institution emerged, from an industry based project towards a "mertonian" institution of knowledge contributing to unify the scientific community at the level of the country, while bypassing the historical divisions of the three worlds of universities (state; catholic; free). Based on a recent field work on the transformation of the instruments of science policy in Belgium, this paper proposes to analyse in some depth the dynamics of transformation of the FNRS at its emergence as well as the transformations this institution had to go through in order to survive till now : under the same acronym, the institution had to transform itself in order to adapt to social change and pressure for transformation. The main steps were to maintain its independence while being funded by the state (after WWII); to reinforce its identity in competition against emerging strategic science policy instruments; to stand the pressure to democratisation which opposed its elitist model in the organisation of research; to survive the decentralisation process which affected all political structures in the country after 1968 onwards. This analysis will unveil some of the mechanisms of adjustment which it had to mobilise in order to survive, and particularly the practicalities of the forms of cooperation of the different stakeholders supporting the institution through 80 years of existence: the researchers themselves as members of the "community" this institution is serving; the authorities of the three main universities whose positions have continuously grown; industry partners and political authorities. We propose to prolong this analyse by a comparison with the processes of emergence of the ERC (European Research Council), an institution also devoted to the identity construction of a specific scientific community ( but a community without a real "polity") and also struggling with stakeholders for the definition of settings of community participation and administrative and political control. At 80 years of distance, we observe the emergence of two institutions similarly designed to support the emergence of a "scientific collective" : they design autonomously their internal procedures of categorisation and hierarchisation, with identification processes contributing to the definition of institutional boundaries defining a specific field while ensuring its inscription in the society through a specific legitimating strategy (Douglas, 1986). A diachronic analysis helps underline how socially constructed are these institutions, and how the configuration of networks are continuously redesigned to better be embedded in a specific historic society (Laborier, 2003). [less ▲]

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See detailBiometallurgy for a greener E-wastes recycling
Lewis, Grégory ULg

Conference (2010, September 03)

Detailed reference viewed: 54 (5 ULg)
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See detailMonitoring endocrine profiles for prediction of stillbirth in Holstein-Friesian dairy cattle
Szenci, O.; Bajcsy, A. C.; Brydl, E. et al

Conference (2010, September 03)

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See detailVingt ans de recherche sur les jeunes : un bilan
Fournier, Bernard ULg

Conference (2010, September 02)

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See detailL'importance de ne pas être aveugle à la dimension de genre dans l'étude de la participation sociale, civique et politique des jeunes
Gavray, Claire ULg; Born; Waxweiler, Charline ULg

Conference (2010, September 02)

le traitement des données de l'European Social Survey' montre l'intérêt de prendre en compte la question de la socialisation genrée dans l'analyse de l'engagement politique et civique des jeunes

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See detailPrice Competition under Universal Service Obligations
Gautier, Axel ULg

Conference (2010, September)

In industries like telecom, postal services or energy provision, universal service obligations (uniform price and universal coverage) are often imposed on one market participant. Universal service ... [more ▼]

In industries like telecom, postal services or energy provision, universal service obligations (uniform price and universal coverage) are often imposed on one market participant. Universal service obligations are likely to alter firms' strategic behavior in such competitive markets. In this paper we show that, depending on the entrant's market coverage and the degree of product differentiation, the Nash equilibrium in prices involves either pure or mixed strategies. We show that the pure strategy market sharing equilibrium, as identified by Valletti et al. (2002) defines a lower bound on the level of equilibrium prices. [less ▲]

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See detailTotal error as natural decision criteria for analytical methods validation and transfer
Rozet, Eric ULg; Boulanger, Bruno ULg; Dewe et al

Conference (2010, September)

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See detailThe smell of death - a new method to detect buried remains: GCxGC-TOFMS
Dekeirsschieter, Jessica ULg; Brasseur, Catherine ULg; De Koning, Sjaak et al

Conference (2010, September)

Detailed reference viewed: 80 (26 ULg)
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See detailMining and Biodiversity: The Study Case of Ecosystem Reconstruction in Katanga (DRC)
Lebrun, Julie ULg; Semereab, Ezana; Rensonnet, Audrey et al

Conference (2010, September)

The Katangan copper-cobalt deposits (Democratic Republic of Congo) are part of the Central African Copperbelt, one of the world’s greatest metallogenic province. The ore comes to the surface in a series ... [more ▼]

The Katangan copper-cobalt deposits (Democratic Republic of Congo) are part of the Central African Copperbelt, one of the world’s greatest metallogenic province. The ore comes to the surface in a series of hills isolated in the miombo woodland. These unique ecosystems present high metals concentration levels where a specific vegetation develops. Flora comprises more than 600 species from which 30 are endemics. Due to the recent revival of mining activities in the region, copper plant communities of Katanga and their associated flora are now critically threatened. Tenke Fungurume Mining sarl (TFM), an important mining company operating in Katanga, has developed a Biological Diversity Action Plan (BDAP) to conserve copper-cobalt flora and mitigate potential species extinction risk. One of the most original BDAP tasks is an ecosystem reconstruction experiment that should preserve plant communities representative of the diversity found on the exploited hill and to provide the plant material for further post-exploitation restoration. From December 2007 to April 2009, full vegetation blocks were translocated with their soil mat on an adequate mineral substrate of 1500m². Since 2008, the artificial ecosystem is monitored every year. Three communities were successfully recreated. A total of 125 species were found in the ecosystem which represents half of the original species richness. Population size decreased for only 12 out of 32 surveyed species. This first experience shows that ecosystem reconstruction is successful and may be used as a strategy to conserve copper-cobalt plant communities in their habitat. [less ▲]

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See detailThe role of fish predation in the structure of amphipod community associated with Posidonia oceanica seagrass meadows
Sturaro, Nicolas ULg; Lepoint, Gilles ULg; Panzalis, Pier et al

Conference (2010, September)

Despite the major ecological importance of Posidonia oceanica seagrass meadows in the Mediterranean Sea, little attention has been given to community structuring forces by predators in this ecosystem. To ... [more ▼]

Despite the major ecological importance of Posidonia oceanica seagrass meadows in the Mediterranean Sea, little attention has been given to community structuring forces by predators in this ecosystem. To better understand the mechanisms by which fishes affect amphipod community structure associated to P. oceanica beds, experimental manipulations of predation intensity (enclosure and exclusion cages) were set up in the Tavolara-Punta Coda Cavallo Marine Protected Area (Sardinia, NW Mediterranean). In totally protected area, where high abundance of predatory fishes is recorded, we have performed exclusion experiment. Total amphipod abundance increased at the end of the experiment, but diversity and specific composition were unaffected. At the species taxonomic level, significant increase in abundance between treatments appeared only for Caprella acanthifera. In partially protected area, where fish abundance is lower and amphipod abundance higher, individuals of the carnivorous fish Coris julis (Labridae) were enclosed in cages to provide an estimate of the potential for this species to impact on amphipod community. There was a small but measurable effect on amphipod abundance between enclosures and unmanipulated controls. A few dominant amphipod species responded to fish predation by significant decrease in abundance. These results suggest that fish predation may determine the relative abundances in the community of some amphipod species and to some degree, through an untested link with habitat complexity, determine the spatial distribution of amphipod abundance within P. oceanica beds. Moreover, patterns observed at the species level, suggest parallel complex interactions probably mainly related to ecological behaviour of amphipod species. [less ▲]

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See detailImpact of liming operating conditions on the convective drying kinetics of urban residual sludges
Royer, Sandrine; Blandin, Gaëtan; Salmon, Thierry ULg et al

Conference (2010, September)

Detailed reference viewed: 118 (24 ULg)
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See detailImpact of storage at 4°C on the study of sludge drying emissions
Fraikin, Laurent ULg; Herbreteau, Benjamin; Chaucherie, Xavier et al

Conference (2010, September)

Detailed reference viewed: 55 (23 ULg)
See detailChosen, arranged or forced marriage: a case study
Duchêne, Judith ULg

Conference (2010, September)

This paper is the result of an ethnographic research conducted in the Turkish and Moroccan communities of the Hodimont neighborhood in Verviers. The analysis aims to highlight the matrimonial strategies ... [more ▼]

This paper is the result of an ethnographic research conducted in the Turkish and Moroccan communities of the Hodimont neighborhood in Verviers. The analysis aims to highlight the matrimonial strategies and the influence of the community into these ones.   A triangular interaction between parents / child / community is at the hart of each wedding’s decision. The modality of this interaction – more or less flexible – seems to be crucial in the determination of the marriage’s form and in the constraining force that can weigh on young people for the choice of their partner. Moreover, every component of young people’s life within the community is influenced by the relations with the parents and the community members. Education, socialization, religious experience, gender perceptions, economic contingencies are dimensions that are crossed by parental and community recommendations. In this context, it can be hard for young people to find a right balance between the fulfillment of the family’s wills and the respect of their own desire. This situation might cause constraints or acts of violence but it might also produce reconciliations and self‐affirmations.   [less ▲]

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See detailThe 2500 yr long paleoseismological record of the Hazar Lake, East Anatolian fault, Turkey
Hubert, Aurelia ULg; Vanneste, K.; Cagatay, N et al

Conference (2010, September)

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See detailEtude des processus d’adaptation aux nouvelles technologies par l’analyse des communications : le cas de la chirurgie robotique
Blavier, Adelaïde ULg; Nyssen, Anne-Sophie ULg

Conference (2010, September)

Ce papier propose d’étudier les processus d’adaptation lors de l’introduction d’une nouvelle technologie en chirurgie, par l’analyse des communications recueillies en situation réelle. Nous avons comparé ... [more ▼]

Ce papier propose d’étudier les processus d’adaptation lors de l’introduction d’une nouvelle technologie en chirurgie, par l’analyse des communications recueillies en situation réelle. Nous avons comparé les communications lors de l’utilisation de deux techniques différentes (laparoscopie classique et système robotique, étude 1) ainsi que les communications lorsque les équipes sont composées de chirurgiens experts ou novices avec la nouvelle technologie (étude 2). Nous mettons également en évidence l’existence de deux types de communications qui se distinguent selon l’expertise des acteurs: 1) les communications qui traitent de la manipulation et de l’orientation spatiale, elles disparaissent avec l’expertise et mettent en évidence un stratégie d’adaptation à court terme ; 2) les ordres et les confirmations qui restent présentes dans la pratique experte et qui témoignent d’un changement radical de structure de la tâche, induisant un mode de contrôle symbolique basé sur l’adressage verbal et augmentant le coût cognitif dans les situations de télé-opération. Centre(s) de recherche : Centre d'expertise en psychotraumatisme et psychologie légale [less ▲]

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See detailRelation entre le regard expert et la mémoire visuelle à partir de l’enregistrement du mouvement oculaire
Blavier, Adelaïde ULg; Nyssen, Anne-Sophie ULg

Conference (2010, September)

Cette communication a pour objectif d’étudier le caractère adaptatif de la mémoire visuelle ainsi que ses limites. Nous comparons les performances mnésiques de sujets experts (historiens de l’art) et ... [more ▼]

Cette communication a pour objectif d’étudier le caractère adaptatif de la mémoire visuelle ainsi que ses limites. Nous comparons les performances mnésiques de sujets experts (historiens de l’art) et novices en fonction du mouvement du regard et en fonction du type de détail (background, intérêt central versus marginal). Nos données montrent que les experts n'explorent pas une oeuvre de la même façon que les novices. Ce premier résultat montre que le regard évolue en fonction des expériences passées. Nous mettons en évidence que la performance mnésique de tous les sujets dépend principalement de l’importance conceptuelle (les détails centraux sont mieux rappelés que les autres). En outre, nous montrons que les performances des novices sont influencées par le traitement visuel qu’ils sont opéré tandis que les experts se basent principalement sur leurs représentations mentales qu’ils ont en mémoire et cela, même si elles sont erronées. Ces études montrent le caractère adaptatif de la mémoire visuelle qui ne mémorise pas toute l’information visuelle traitée mais qui en sélectionne une partie avec les erreurs qui peuvent sous-tendre ce processus de sélection. [less ▲]

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See detailJupiter's ultraviolet polar emission: a statistical study
Coumans, Valérie ULg; Bonfond, Bertrand ULg; Grodent, Denis ULg et al

Conference (2010, September)

Detailed reference viewed: 11 (5 ULg)
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See detailPrimary school in Congo: heritage, hybridity and resilience
Andre, Géraldine ULg; Poncelet, Marc ULg

Conference (2010, September)

Detailed reference viewed: 20 (0 ULg)
See detailE-voting: Eid Card in action
Parotte, Céline ULg

Conference (2010, September)

Presentation included in the track number 4 of EASST conference: What objects do: design, consumption and social practices.

Detailed reference viewed: 64 (12 ULg)
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See detailValidation of musculoskeletal models: the importance of trend validations
De Zee, Mark; Lund, Morten; Schwartz, Cédric ULg et al

Conference (2010, September)

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See detailThe distributions of the OH (Δv=1) and (Δv=2) emissions on the Venus nightside
Soret, Lauriane ULg; Gérard, Jean-Claude ULg; Piccioni, Giuseppe et al

Conference (2010, September)

The presence of OH was detected in the spectrum of the Venus mesosphere observed at the limb with the VIRTIS instrument on board the Venus Express spacecraft [3]. The (1-0) and (2-1) transitions at 2.80 ... [more ▼]

The presence of OH was detected in the spectrum of the Venus mesosphere observed at the limb with the VIRTIS instrument on board the Venus Express spacecraft [3]. The (1-0) and (2-1) transitions at 2.80 and 2.94 mm, respectively and the (2-0) band at 1.43 mm were clearly identified. The results of this study show that a correlation is observed between the emissions associated to the Δv=1 and the Δv=2 sequences. [less ▲]

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See detailPreliminary study of effects of anaerobic digestion of manure on VFA content and Odor concentration
Ubeda, Yolanda; Nicolas, Jacques ULg; Calvet, S. et al

Conference (2010, September)

In this study, the potential reduction of odor of anaerobic digestion has been evaluated in three commercial facilities located in Belgium, Luxembourg and Germany. Odor concentrations were measured by ... [more ▼]

In this study, the potential reduction of odor of anaerobic digestion has been evaluated in three commercial facilities located in Belgium, Luxembourg and Germany. Odor concentrations were measured by olfactometric analyses in two different situations: at normal conditions and after the stirring the odor source. Parallel to these measures, representative samples were taken for digested and untreated manure and other co-substrates present in the facilities. Volatile solids, total solids, total suspended solids, volatile suspended solids, soluble chemical oxygen demand, ammonia nitrogen, total kjeldhal nitrogen, volatile fatty acids, and pH were determined in laboratory. The performance of anaerobic digestion in terms of VFA concentration reduction achieved values of 77-96%. Odor concentration was reduced by anaerobic digestion in the two studied scenarios: at normal conditions and after the stirring the odor source. No significant effect of anaerobic digestion on chemical analyses was observed, except for an increase in the ammonia nitrogen content. Significant correlations were found between the logarithm of odor concentration and different odor compounds (VFA, acetic, butyric, isobutyric, isovaleric). Correlations between odor concentration, VFA and other parameters (VS, VSS and pH) were also obtained. These results confirm that anaerobic digestion may reduce odor annoyance potential and VFA concentrations. In addition, odor concentration seems to be related with other chemical parameters, therefore more research is needed to obtain further conclusions. [less ▲]

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See detailLinking design and production in computer applications for increased efficiency
Caprace, Jean-David ULg

Conference (2010, September)

Shipbuilding has been severely affected by the global economic crisis. Demand for new ships has collapsed world wide since summer 2008 causing an unprecedented levels of overcapacity in the global cargo ... [more ▼]

Shipbuilding has been severely affected by the global economic crisis. Demand for new ships has collapsed world wide since summer 2008 causing an unprecedented levels of overcapacity in the global cargo ship fleets. The current crisis gives impulses for a radical think to adopt new designs to reduce the life cycle costs and to decrease the environmental impact. Leading shipping companies recognise that low life cycle cost and low emission save costs, open quality sensitive markets and will be the key driver to profitability in the future. The speaker will present some possible techniques to improve the link between design and production in order to boost the competitiveness of worldwide shipyards. Modularizations, ease of manufacturing, standardization, virtual reality, production simulation, product life cycle management, are some of these techniques illustrated in the presentation. The speaker will also draw the trends for the future years. [less ▲]

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See detailOdour evaluation of a dairy farm with anaerobic digestion
Ubeda, Yolanda; Neyrinck, Roland ULg; Calvet, S. et al

Conference (2010, September)

The present work focuses on odour evaluation of a dairy farm with anaerobic digestion, located in the Luxembourg province (Belgium). This study pursues three main goals: 1.- To evaluate the effect of the ... [more ▼]

The present work focuses on odour evaluation of a dairy farm with anaerobic digestion, located in the Luxembourg province (Belgium). This study pursues three main goals: 1.- To evaluate the effect of the anaerobic digestion process on the odour level in the farm, 2.- To compare field and laboratory odour measurement techniques and 3.-To study the influence of the meteorological observation frequency on the odour plume, through the use of dispersion models. Three different approaches were used to characterize the odour: dynamic and field olfactometry and sniffing team method. Odour emissions from all sources were measured by duplicated through dynamic chamber and olfactometric analysis in two different situations: in normal conditions and after stirring the odour source. Two odour field measurement campaigns were conduced in the surroundings of the farm, and meteorological conditions were recorded two times per minute with a weather station. After comparing odour emissions with field measurements through dispersion modeling, we concluded that the best results were obtained using minimum and averaged odour emission rates. Emission rates measured in stirring conditions overestimated the reach of odour perceived in the field in three field campaigns. Overall odour emitted from the farm increased with the anaerobic digestion process. Although odour emission from digested manure is reduced in comparison with non-treated manure, the presence of agricultural wastes increases global odour emission. Finally, meteorological data were averaged each one, five and fifteen minutes. Odour shape was thinner and more extended with 15-minutes data, whereas it was larger and shorter with 30-secondes records. One minute and 5-minute values showed intermediate situations. In conclusion, different techniques to measure odours were compared in this study and, according to the results, field techniques seemed to be more realistic than dynamic olfactometry. [less ▲]

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See detailNEW INSIGHTS INTO THE Early EVOLUTION OF LiFe: EVIDENCE FROM THE pilbara craton
Sugitani, Ken; Grey, Kath; Van Kranendonk, Martin et al

Conference (2010, September)

Detailed reference viewed: 25 (4 ULg)
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See detailSome improvements of the S-adic conjecture
Leroy, Julien ULg

Conference (2010, September)

Detailed reference viewed: 7 (1 ULg)
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See detailNature des traitements morphologiques chez les dyslexiques : une étude en amorçage masqué
Quemart, Pauline ULg; Casalis, Séverine

Conference (2010, September)

Detailed reference viewed: 28 (2 ULg)
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See detailWhat to learn from drug-users about the drug-crime nexus?
Lemaître, André ULg; Born, Michel ULg; Witvrouw, Line ULg

Conference (2010, September)

Detailed reference viewed: 30 (11 ULg)
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See detailTraitement des unités morphémiques lors de la reconnaissance des mots écrits chez les jeunes lecteurs
Quemart, Pauline ULg; Casalis, Séverine; Colé, Pascale

Conference (2010, September)

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See detailThe Venus oxygen nightglow and density distributions
Soret, Lauriane ULg; Gérard, Jean-Claude ULg; Montmessin, Franck et al

Conference (2010, September)

Observing Venus nightglow is a key tool to understand the composition and the dynamics of its atmosphere. Results deduced from observations can be implemented to produce a data model of Venus atmosphere ... [more ▼]

Observing Venus nightglow is a key tool to understand the composition and the dynamics of its atmosphere. Results deduced from observations can be implemented to produce a data model of Venus atmosphere. For instance, the Visible and Infra-Red Thermal Imaging Spectrometer (VIRTIS) instrument on board the Venus Express spacecraft is very useful to analyze the O2(a1Δ) nightglow at 1.27 µm in the Venus mesosphere. Nadir observations can be used to create a statistical map of the emission on Venus nightside. It appears that the maximum of the emission is located near the antisolar point. Limb observations also provide information on the altitude and on the shape of the emission layer. Combining nadir observations and vertically integrated limb observations improves the statistics of the emission map on Venus nightside. An associated limb profile can also be deduced for any point of the nightside. Given all these O2(a1Δ) intensity profiles, O2* density profiles can be calculated. O density profiles can also be calculated as long as CO2 density profiles are available. These can be retrieved either from the VTS3 model or from SPICAV stellar occultation measurements. Finally, three-dimensional maps of excited molecular and atomic oxygen densities can be generated. The oxygen density map shows significant differences from the VTS3 model predictions. [less ▲]

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See detailMigrazioni e processi insediativi la visione dello Spazio-Nazione sionista in Palestina negli anni Venti letta attraverso i progetti di Richard Kauffmann
Fisher, Axel ULg

Conference (2010, September)

Il Grande Incendio di Salonicco (1917) e la sua ricostruzione contribuirono a ridisegnare la geografia etno-confessionale lungo il nuovo confine greco-turco, ma anche alla transizione della città da ... [more ▼]

Il Grande Incendio di Salonicco (1917) e la sua ricostruzione contribuirono a ridisegnare la geografia etno-confessionale lungo il nuovo confine greco-turco, ma anche alla transizione della città da “Gerusalemme dei Balcani” a “Capitale dei profughi”. Pochi decenni prima dell’incendio che avrebbe colpito nel corpo la comunità ebraica europea – l’Olocausto – quello di Salonicco concorse ad alimentare fenomeni migratori e progetti di ricostruzione in luoghi distanti : calcando le orme dei loro correligionari centreuropei, gli ebrei di Salonicco emigrarono verso l’Europa occidentale, le Americhe. Alcuni preferirono la Palestina.Dalla fine dell’Ottocento, le persecuzioni razziali in Europa – spesso accompagnate dall’incendio dei luoghi di culto – avevano provocato regolari ondate migratorie verso questa remota provincia dell’Impero ottomano, ora sotto Mandato britannico. A ciascuna di queste ondate corrispondevano altrettante campagne insediative accomunate dallo sforzo di diverse generazioni di agronomi, architetti e urbanisti nella definizione dei caratteri e delle forme del villaggio agricolo ebraico ; « topos » prioritario nella ricostruzione delle nuove identità individuali e collettive ebraiche.Nei primi anni Venti, il riassetto geopolitico del Mediterraneo orientale rappresenta l’occasione per l’Organizzazione sionista di guidare il « ritorno degli ebrei alla loro terra d’origine » e all’agricoltura. Nella Valle di Jesreel si mette in atto un ambizioso progetto di ricostruzione e diradicamento, fisico e culturale a un tempo : un giovane architetto e urbanista di origini tedesche – Richard Kauffmann (1887-1958) – progetta numerosi villaggi agricoli, una piccola agro-città (Afula) e lo sviluppo della Baia di Haifa. La sequenza di questi progetti prefigura un precoce esperimento di pianificazione regionale pre-statale dal quale emerge la prima espressione compiuta di un’idea dello Spazio-Nazione sionista : un sistema insediativo lineare fondato sull’agricoltura, gerarchicamente organizzato e funzionalmente integrato, in cui è possibile apprezzare il grado di necessità del progetto di architettura nel quadro di una strategia di ampio respiro che stabilisce rapporti originali con la natura, la storia e l’« impianto geografico » a scala nazionale. [less ▲]

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See detailSédation par gamma-hydroxybutyrate et effets sur l'indice bispectral chez l'enfant.
ROUSSEAU, Anne-Françoise ULg; SABOURDIN, Nada; RICHARD, Granados et al

Conference (2010, September)

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See detailThermo-elastic distortion measurements by holographic interferometry and correlation with finite element models for SiC connections/junctions on spacecraft
Thizy, Cédric ULg; Stockman, Yvan ULg; Eliot, Fabienne et al

Conference (2010, September)

Scientific, earth observation and telecommunication spacecrafts are submitted to severe thermal environments while their mission performance requires more and more high stable structures. Due to on-ground ... [more ▼]

Scientific, earth observation and telecommunication spacecrafts are submitted to severe thermal environments while their mission performance requires more and more high stable structures. Due to on-ground constraints, the verification by test of the performances of these stable structures is usually limited. However accurate prediction methodology and verification capability of thermal distortions becomes mandatory for ensuring the in-orbit performance objectives of future programs. The main thermo-elastic contributors of the final stability performances are: - Material and assembly physical properties knowledge (Coefficient of Thermal Expansion, Young modulus, Poisson ratio…) - Modeling and simulation capabilities: temperature mapping, accurate thermo-elastic finite element models… - Verification test performances: advanced measurement techniques are required to characterize and determine the different main contributors to the final end to end performance and to perform accurate correlation. In this study, material characteristics are assumed to be well known. The objective was to improve and develop analytical predictions and verification of thermo elastic distortions using sample testing for modeling correlation. The samples have been chosen to be representative of the connections/junctions that can be encountered in stable structures on spacecraft and can have a dominant impact on the instrument stability. The results presented in this paper concern SiC/SiC and SiC/TA6V bonded and bolted samples. For the tests, temperature variations between -20°C and +15°C from ambient have been applied to the samples. Thermo-elastic distortions have been measured with a holographic camera. This holographic camera can measure displacements in the range of 20 nm to 20 m without physical contact with the samples. The tests results have been compared to the predictions obtained by Finite Element Modelling. From this comparison modelling guidelines have been issued with the aim of improving the accuracy of computed thermo elastic distortions: the FEM predictions lead to quite good correlation with the test data, with most of the time less than 10% discrepancies. A second phase to this study is planned. The objective is to implement all the benefits on improvement of thermo-elastic distortions predictions and verification achieved during the first phase on real spacecraft hardware. [less ▲]

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See detailInterfacing a Synthetic Molecular Shuttle with the AFM
Lussis, Perrine ULg; Svalto-Lanero, T; Fustin, C.-A et al

Conference (2010, August 30)

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See detailThe decline of weorðan in English versus the grammaticalization of werden in German
Petré, Peter ULg

Conference (2010, August 27)

The passive construction consitutes a marked difference between English, which uses the auxiliary be, and German, which uses werden ‘become’. Zieglschmid (1931), however, showed that that originally both ... [more ▼]

The passive construction consitutes a marked difference between English, which uses the auxiliary be, and German, which uses werden ‘become’. Zieglschmid (1931), however, showed that that originally both languages used both verbs. I argue that English lost weorðan (the cognate of werden) when it abandoned the bounded construal of narratives, inherited from Germanic, while German further grammaticalized this system, with the further grammaticalization of werden as a consequence. The original variation is illustrated for Old High German in (2), where sein functions as actional passive auxiliary (next to the frequent occurrence of werden), a choice no longer available in Middle High German (3). Similarly, Old English (4) still has passive weorðan (next to be), but this verb has disappeared from Middle English (5). (1) Latin Ecce aperti sunt ei caeli “See: opened are him:DAT heavens” (Mt. 3.16) (2) Old High German Senu tho aroffonota warun imo himila “See, then opened were him:DAT heavens” (c830) (3) Middle High German Und secht die himel wurden im auf getan “And see the heavens got him:DAT open made” (c1466) (4) Old English & him wurdon þærrihte heofenas ontynede “and him:DAT got immediately heavens opened” (c1025) (5) Middle English and lo! heuenes weren openyd to hym (c1384) I argue that Germanic was a moderately bounded language. Bounded languages construe situations as completed sub-events, emphasizing narrative progress, and make abundant use of time adverbials (Carroll, Stutterheim & Nuese 2004), which split up an event chronologically and often take up the first position in a verb-second system. In German the bounded system became further grammaticalized, for instance through the fixation of the verb-second system. The concomitant grammaticalization of werden is explained by its bounding change-of-state semantics that denotes completed events. In English the bounded system disappears, as can be seen from the heavy decrease of time adverbials of narrative progress (þærrihte ‘immediately’ in (4), but mostly þa ‘then’: Kemenade & Los 2006) and the confusion of verb-second-syntax (Los 2009). Weorðan, being highly entrenched in these constructions, disappears with them. By appealing to the bounded-unbounded distinction, it is thus possible to account for a major difference in the auxiliary system between English and German. References Carroll, Mary, Christiane von Stutterheim & Ralf Nuese. 2004. The language and thought debate: A psycholinguistic approach. In Thomas Pechmann and Christopher Habel (eds.), Multidisciplinary approaches to language production (Trends in Linguistics: Studies and Monographs 157), 183-218. Berlin: Mouton de Gruyter. Kemenade, Ans van & Bettelou Los. 2006. Discourse adverbs and clausal syntax in Old and Middle English. In Ans van Kemenade & Bettelou Los (eds.), The Handbook of the History of English, 224–48. Oxford: Blackwell. Los, Bettelou. 2009. The consequences of the loss of verb-second in English: Information structure and syntax in interaction. English Language and Linguistics 13(1), 97-125. Zieglschmid, A. J. Friedrich. 1931. Werdan and wesan with the passive in various Germanic languages. Germanic Review 6(4). 389-396. [less ▲]

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See detailSpinal Cord Research on the Way to Translation
Martin, Didier ULg

Conference (2010, August 26)

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See detailExposer l'exposé
Dispy, Micheline ULg; Van Beveren, Julien ULg; Rikir, Fabienne

Conference (2010, August 26)

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See detailCommunautés de Pratique : susciter et maintenir l'interactivité
Snoeck, Céline ULg

Conference (2010, August 26)

Cet article traite des CoP, du choix des outils TIC et des fonctionnalités qui répondent aux besoins des membres et de l’animation de communautés de pratique. « Les CoP (Communautés de Pratiques) sont des ... [more ▼]

Cet article traite des CoP, du choix des outils TIC et des fonctionnalités qui répondent aux besoins des membres et de l’animation de communautés de pratique. « Les CoP (Communautés de Pratiques) sont des groupes de personnes qui partagent une préoccupation ou une passion pour quelque chose et qui apprennent à le faire mieux en interagissant régulièrement. » (Wenger, 2006). [less ▲]

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See detailSoil-plants relations diversity in extreme ecsystems and implications for restoration: the case of the cupriferous vegetation, in Katanga, D.R. Congo
Seleck, Maxime ULg; Guillaume, Arielle; Lebrun, Julie ULg et al

Conference (2010, August 25)

Katangan copper and cobalt hills in the D. R. Congo are isolated ecosystems on highly toxics substrates (>10.000 ppm Cu, with strongly marked gradients). As a result, those outcrops host singular vegetal ... [more ▼]

Katangan copper and cobalt hills in the D. R. Congo are isolated ecosystems on highly toxics substrates (>10.000 ppm Cu, with strongly marked gradients). As a result, those outcrops host singular vegetal communities – with a diversity of specialized metallophytes species – related to soil metals content. Recent resumption of mining activities in the area threatens those ecosystems. To allow the restoration of those communities a fine understanding of the relationship maintained with the edaphic factors is required, as well as a characterization of the intra and inter sites variation. Three outcrops have been studied on the basis of a systematic grid, following the a priori trace elements gradient. In 1m² quadrats, a composite soil sample (0-15 cm depth) was taken and the cover (%) of each species of vascular plants was recorded. Soils were analyzed for pH, C, N, and bioavailables Cu, Co, Zn, Mn, Fe, K, Mg, Ca and P. The cluster analysis and Canonical Correspondence Analysis show that different sites present different soil conditions and vegetation. Concentrations in Cu are an important explicative factor of the flora’s variation but gradients in others edaphic parameters (pH, Mg, Mn, K, Ca) appear to be essential. However, parameters explaining the diversity of communities vary from one site to another indicating a great diversity of those ecosystems and the need to develop restoration strategies relevant for each site. [less ▲]

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See detailThe indirect effect of reading social practices on reading achievement.
Baye, Ariane ULg; Schillings, Patricia ULg

Conference (2010, August 25)

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See detailWeorðan ‘become’ and begin as indicators of the unbounded to bounded shift in English
Petré, Peter ULg

Conference (2010, August 25)

In this talk I contrast the developments of the disappearing copula and passive auxiliary (ge)weorðan ‘be(come)’ with the increasingly popular group of inchoative ‘gin-verbs’ (begin(nen), agin(nen), gin ... [more ▼]

In this talk I contrast the developments of the disappearing copula and passive auxiliary (ge)weorðan ‘be(come)’ with the increasingly popular group of inchoative ‘gin-verbs’ (begin(nen), agin(nen), gin(nen), ongin(nen)) during the period 950-1500. The frequency of weorðan (underlined) in Old English is illustrated in (1). This fragment also shows that Old English language use was bounded. Bounded language use construes situations as completed sub-events, emphasizing narrative progress, and makes abundant use of time adverbials (Carroll, Stutterheim & Nuese 2004), which split up an event chronologically and often take up the first position in a verb-second system. (1) Ða he hig hæfde ealle amyrrede þa wearð mycel hunger & he wearð wædla. Þa beþohte he hine & cwæð, Ic fare to minum fæder. & þa gyt þa he wæs feorr his fæder he hyne geseah & wearð mid mildheortnesse astyrod. “When he had everything wasted, then a great hunger arose and he became a beggar. Then he thought by himself and said: ‘I (will) travel to my father.’ And then, when he was still far , his father saw him and was stirred by mercy.” (c1025) The high frequency of weorðan in bounded language use is explained by its change-of-state semantics that denotes completed events. By 1400, however, time adverbials of narrative progress had heavily decreased (for þa: Kemenade & Los 2006) and the verb-second-syntax they trigger had become confused (Los 2009). Weorðan, being highly entrenched in these constructions, disappears as a consequence of their breakdown. Simultaneously, inchoative ginnen-verbs became more frequent. For instance, instead of he wearð wædla ‘he became a beggar’, as in (1), the Wycliffe Bible (c1384) has he began to have need. I argue that these gin-verbs signal the early development of unbounded construal. Unbounded language use construes situations as open-ended. While this is done most clearly through progressive aspect (he was walking), inchoative constructions are also partly open-ended, and provide, for past-tense narrative, a parallel to the progressive (Carroll, von Stutterheim & Nuese 2004: 206). In general, I contribute to the hypothesis that the loss of verb-second syntax (and of time adverbs) affected event construal, and triggered the development of new, unbounded, constructions including the progressive, rather than that the development of the progressive constituted the trigger after which the unbounded system first developed. References Carroll, Mary, Christiane von Stutterheim & Ralf Nuese. 2004. The language and thought debate: A psycholinguistic approach. In Thomas Pechmann and Christopher Habel (eds.), Multidisciplinary approaches to language production (Trends in Linguistics: Studies and Monographs 157), 183-218. Berlin: Mouton de Gruyter. Kemenade, Ans van & Bettelou Los. 2006. Discourse adverbs and clausal syntax in Old and Middle English. In Ans van Kemenade & Bettelou Los (eds.), The Handbook of the History of English, 224–48. Oxford: Blackwell. Los, Bettelou. 2009. The consequences of the loss of verb-second in English: Information structure and syntax in interaction. English Language and Linguistics 13(1), 97-125. [less ▲]

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See detailQt'a al-bhar bach toulli rajl (Crossing the sea to become a man): imagined trips of aspiring migrants from Morocco to Italy.
Mescoli, Elsa ULg

Conference (2010, August 25)

Addressing aspiring migrants' dreams planning to move from Khouribga (Morocco) to Italy , I will focus on the construction of the imagined "away from home" and "back home" versus an experienced and ... [more ▼]

Addressing aspiring migrants' dreams planning to move from Khouribga (Morocco) to Italy , I will focus on the construction of the imagined "away from home" and "back home" versus an experienced and symbolized "staying", and I will point out how they converge. A context of crisis perceived inside Moroccan society, concerning lack of working opportunities and diffuse nepotism, pushes many people of Khouribga to imagine a life elsewhere. The steady contact with images and goods coming from Italy presents this country as a land where to fulfil oneself. An imagined life becomes a migration project, though one which seems to turn into a trip "without moving". To face these dynamics, the local context shapes its actions as to let people go away by, actually, forcing them to realize their trip "at home". [less ▲]

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See detailComputational treatment of the error distribution in nonparametric regression with right-censored and selection-biased data
Laurent, Géraldine ULg; Heuchenne, Cédric ULg

Conference (2010, August 24)

Consider the regression model Y = m(X) + σ(X) Ɛ , where m(X) = E[Y|X] and σ²(X) = Var[Y|X] are unknown smooth functions and the error Ɛ (with unknown distribution) is independent of X. The pair (X;Y) is ... [more ▼]

Consider the regression model Y = m(X) + σ(X) Ɛ , where m(X) = E[Y|X] and σ²(X) = Var[Y|X] are unknown smooth functions and the error Ɛ (with unknown distribution) is independent of X. The pair (X;Y) is subject to generalized selection bias and the response to right censoring. We construct a new estimator for the cumulative distribution function of the error Ɛ , and develop a bootstrap technique to select the smoothing parameter involved in the procedure. The estimator is studied via extended simulations and applied to real unemployment data. [less ▲]

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See detailParliamentary Technology Assessment Institutions Challenged by Reflexive Modernization in Action
Delvenne, Pierre ULg

Conference (2010, August 24)

The emergence and evolutions of Parliamentary Technology Assessment offices (PTAs) are an indication of our Western modernity becoming more reflexive. This perspective sheds light on recent evolution of ... [more ▼]

The emergence and evolutions of Parliamentary Technology Assessment offices (PTAs) are an indication of our Western modernity becoming more reflexive. This perspective sheds light on recent evolution of PTAs, but also contributes to the discussion of reflexive modernization generally. Ulrich Beck’s diagnosis of reflexive modernization, undermining high modernity since the 1980s, has been widely discussed, but there have been few attempts to map and analyse these complex processes empirically in order to show reflexive modernization in action (Delvenne and Rip 2009). From that perspective, reflexive modernization is seen as a challenge for the institutions of modernity. PTAs are recent institutions that had to span boundaries from the beginning, and might thus have more incentives to follow reflexive modernization while at the same time their progression will be bounded by strong modernist institutional patterns or elements of political culture. We offer case studies of European PTAs based on literature research, participatory observation, official document analysis and qualitative data collection (through semi-structured interviews with academics and TA practitioners). We are particularly interested in how much reflexivity is visible in their institutional path. After formulating two main dimensions of reflexive modernization, openness to plurality and blurring of boundaries, we map the paths of these institutions over time along these two dimensions. There appears to be an overall reflexivity pathway, on which some PTAs have moved farther than others, but their progress is fractured by the resilience of modern institutions. This is due to various institutional factors ¬— like the link with a Parliament — and external factors — like the dynamics of institutionalisation, the cultural meanings and traditions, the historical processes or the structure and the state of the innovation regime — all of which affect the way institutionalised TA embraces a more or less reflexive approach. The identification of an overall reflexivity pathway allows us to highlight new trends in (parliamentary) Technology Assessment as not just interesting ad-hoc novel approaches, but as indications of a new and broader generation of TA. [less ▲]

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See detailSteam explosion pretreatment and thermal degradation of cellulose fibers
Jacquet, Nicolas ULg; Quiévy, Nicolas; Vanderghem, Caroline ULg et al

Conference (2010, August 20)

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See detailCariaco basin dynamics: Study of the thermocline depth variability and its relation with open ocean conditions
Alvera Azcarate, Aïda ULg; Barth, Alexander ULg; Weisberg, Robert H. et al

Conference (2010, August 11)

The Cariaco basin (Venezuela) is a semi-enclosed trench located along the coast of Venezuela, with maximum depths of about 1400 m. It is connected to the open ocean by two shallow passages of less than ... [more ▼]

The Cariaco basin (Venezuela) is a semi-enclosed trench located along the coast of Venezuela, with maximum depths of about 1400 m. It is connected to the open ocean by two shallow passages of less than 150 m depth. Limited basin ventilation, coupled with a small vertical mixing results in anoxic conditions from about 250 m to the bottom. The dynamics of the Cariaco Basin are studied by means of a three-dimensional hydrodynamic model. The numerical model has a resolution of 1/60 degree and is an implementation of the Regional Ocean Modeling System (ROMS) nested in the global HYCOM solution from the Naval Research Laboratory. Of particular interest are the mechanisms that link the basin's interior to the Caribbean Sea, which can lead to the ventilation of the basin's anoxic sub-surface waters. To assess the influence of the open ocean on the basin, the spatial and temporal evolution of the thermocline depth and width is studied, as well as its relationship with wind variability and chlorophyll-a concentration: at seasonal scales, the interior of the basin reacts to easterly winds intensification with a rising of the thermocline, resulting in a coastal upwelling response, with the consequent increase in chlorophyll-a concentration. Outside the Cariaco basin, where an open-ocean, oligotrophic regime predominates, wind intensification increases mixing of the surface layers and induces therefore a deepening of the thermocline. At shorter time scales (i.e. days), it is shown that other processes, such as the influence of the meandering Caribbean Current, can also influence the thermocline variability within the Cariaco basin. [less ▲]

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See detailTime spray strategies for Septoria Leaf Blotch disease progress on winter wheat: the use of forecasting model
El Jarroudi, Moussa ULg; Giraud, Frédéric; Delfosse, Philippe et al

Conference (2010, August 07)

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See detailAssessment of the night weather parameters and their use in forecasting model of leaf rust.
El Jarroudi, Moussa ULg; Giraud, Frédéric; Delfosse, Philippe et al

Conference (2010, August 07)

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See detailGenetic parameters of mastitis-correlated milk components in first parity dairy cows
Gillon, Alain ULg; Bastin, Catherine ULg; Soyeurt, Hélène ULg et al

Conference (2010, August 06)

Ind. of lactoferrin content, ind. of Na content, and lactose content were the three most correlated milk components with somatic cell score among available milk components predicted by mid-infrared ... [more ▼]

Ind. of lactoferrin content, ind. of Na content, and lactose content were the three most correlated milk components with somatic cell score among available milk components predicted by mid-infrared spectrometry on 590,083 test-day records from Walloon Region of Belgium collected between 2007 and 2009. Mean daily heritabilities and mean genetic correlations of these four traits were estimated using Gibbs sampling methodology applied to a multi-trait random regression test-day model with a subset of these records. Mean daily heritabilities of ind. lactoferrin content (0.34), ind. Na content (0.37) and lactose content (0.42) were higher then SCS (0.16) and mean genetic correlations were moderate (from -0.18 to -0.73), showing that these traits could be used together to describe udder health in genetic evaluations instead of SCS alone when clinical mastitis data are not available. [less ▲]

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See detailVariable isotopic turnover rates in Antarctic scavengers
Nyssen, Fabienne; Michel, Loïc ULg; Dauby, Patrick ULg et al

Conference (2010, August 04)

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See detailCan we restore natural habitats after plant invasion? Lessons from years of management
Frisson, Gwenn ULg; Halford, Mathieu ULg; Delbart, Emmanuel ULg et al

Conference (2010, August)

Negative impacts of invasive plants on natural habitats have been widely demonstrated. Hence, the management of invasive plants, aiming at eradicating, or at least controlling their spread, is being more ... [more ▼]

Negative impacts of invasive plants on natural habitats have been widely demonstrated. Hence, the management of invasive plants, aiming at eradicating, or at least controlling their spread, is being more and more developed. For this purpose, we need to identify the most efficient management techniques which could lead to the restoration of invaded ecosystems. Up to now, management methods mentioned in literature were pragmatic tools and often lacked scientific assessment. For several years, we have tested similar mechanical and chemical management techniques in the field on highly invasive plant species, representative of different life forms and invaded habitats: herbaceous rhizomatous perennial Fallopia japonica, ligneous rhizomatous Spiraea spp., ligneous root suckering Acer rufinerve and ligneous stoloniferous Cotoneaster horizontalis. We investigated the efficiency, cost and feasibility of these techniques, and their effects on the restoration of invaded ecosystems. The best performing management technique was found to be highly species specific and was also influenced by the invaded habitat type. For these perennial species, long-term management must be considered, to reduce their competitive capacities with repeated mechanical or chemical techniques (cutting or pulling out several times a year, injection combined with mechanical methods, etc.). For species with sexual reproduction, like Acer rufinerve and Cotoneaster horizontalis, seed bank and seed dispersal must also be taken into account to avoid dissemination when managing. We can conclude invasion plant management is usually expensive and hard to implement but some results are encouraging and show the importance to carry on research on invasive plant management methods. [less ▲]

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See detailRevaloriser le discours du professeur ? Quel type de discours ?
Schneider-Gilot, Marguerite ULg

Conference (2010, August)

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See detailLongitudinal effects of muscular hypertrophy allele on milk production traits during the lactation using a novel equivalent model when molecular information is limited
Colinet, Frédéric ULg; Gengler, Nicolas ULg

Conference (2010, August)

Given that the mh allele causes the double muscling phenotype, this allele could also influence milk production traits of the dual purpose Belgian Blue cattle. However, all dual purpose Belgian Blue ... [more ▼]

Given that the mh allele causes the double muscling phenotype, this allele could also influence milk production traits of the dual purpose Belgian Blue cattle. However, all dual purpose Belgian Blue animals could not be genotyped. So, a new alternative strategy for the prediction of gene effects and especially their smooth integration into genetic evaluations based on an equivalent method was developed from existing theory. Developed equations were modified to allow that not all animals were genotyped. As expected, the mh allele had negative effects on milk production traits. For the first three lactations, the average estimated allelic substitution effects were -0.074 % fat content and -158.7 kg milk per lactation (305 days). Moreover, effects of mh allele were not constant during the lactation. [less ▲]

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See detailOxidation Mechanism in SiCO: First-Principles Study of O2 Diffusion and Reaction
Xu, Bin ULg; Kroll, Peter

Conference (2010, August)

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See detailPredicting Energy Balance Status of Holstein cows using Mid-Infrared Spectral data
Mc Parland, Sinead; Banos, Georgios; Wall, Eileen et al

Conference (2010, August)

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See detailNew insights into aphid isoprenoid pathway
Vandermoten, Sophie ULg; Cusson, Michel; Haubruge, Eric ULg et al

Conference (2010, August)

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See detailHow to use existing power lines to evacuate twice as much wind power ?
Lilien, Jean-Louis ULg

Conference (2010, August)

smart sensors to develop dynamic line rating

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See detailSoil seed bank of calamine sites in Belgium: what could be learned for original metallophytes communities restoration?
Bizoux, Jean-Philippe ULg; Mahy, Grégory ULg

Conference (2010, August)

Metalliferous sites often host rare, ecologically endemic taxa adapted to high levels of heavy metals in soils. In Belgium, these sites correspond to Calamine sites. They are often considered as waste ... [more ▼]

Metalliferous sites often host rare, ecologically endemic taxa adapted to high levels of heavy metals in soils. In Belgium, these sites correspond to Calamine sites. They are often considered as waste ground dangerous for human health and public authorities are inclined to promote site remediation by fertilization, ground supply or removal, building ... In the present study, we analysed the seed bank of two ancient calamine sites in order to precise strategies for restoration of calamine original communities by top soil removal and perturbation. Composite soil samples were taken in 5 facies in two sites corresponding to different association. Cores were divided in three layers: litter, 0-5 cm, 5-10 cm. The total number of taxa was 24 taxa at Theux and 15 at Schmalgraf. The most abundant species (68%) are Agrostis capillaries and Viola calaminaria. Seed bank composition appeared different between facies except for three species. The seed bank was dominated by pseudo metallophytes species in Schmalgraf and by metallophytes or other species in Theux. The majority of the species didn’t present significant difference of number of seed between the three layers, except seven species (A. capillaries, V. calaminaria, Silene vulgaris, Minuertia verna, ...) with significant lower number of seed in the layer 5-10 cm. Our result showed that soil seed bank composition reflect well vegetation communities of the two sites. In addition, because pseudo-metallophyte species as Agrostis capillaries dominated seed bank when they were present in the vegetation, soil removal must be used with parsimony to restore original communities. [less ▲]

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See detailScientific Imagination and Magical Ingredients: Towards an Anthropology of Technofood
Hendrickx, Kim ULg

Conference (2010, August)

2010 promises to be a pivotal year for producers of food, since the European Food Safety Authority is to publish a list of accepted health claims made on industrial food products. The production of such a ... [more ▼]

2010 promises to be a pivotal year for producers of food, since the European Food Safety Authority is to publish a list of accepted health claims made on industrial food products. The production of such a list, however, goes not without trouble. In the first section, this paper will outline the controversies and scientific uncertainties accompanying the development of a technological food category (allegedly) providing physical or psychological health benefits 'beyond basic nutrition'. In the second section, food will be looked at through the lens of power. Throughout human history, different authorities have prescribed what one should (not) eat. What is at stake then, when health claims and food become technological? Finally, it will be argued that an anthropology of 'technofood' is possible, by translating the discourse of market, competitiveness and 'optimized health' in terms of techno-scientific imagination, magical thinking and (bio)power. [less ▲]

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See detailLes grenats dans l’orfèvrerie mérovingienne
Mathis, François ULg; Vrielynck, Olivier; Annaert, Henrica et al

Conference (2010, August)

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See detailLes noms de mois à l’époque des šakkanakkū de Mari
Colonna d'Istria, Laurent ULg

Conference (2010, July 27)

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See detailA Full Discontinuous Galerkin Formulation Of Euler Bernoulli Beams In Linear Elasticity With Fractured Mechanic Applications
Becker, Gauthier ULg; Noels, Ludovic ULg

Conference (2010, July 21)

A full discontinuous Galerkin method is used to predict the fracture of beams thanks to insertion of an extrinsic cohesive element. In fact, The formulation developed originally by G. Wells etal. to ... [more ▼]

A full discontinuous Galerkin method is used to predict the fracture of beams thanks to insertion of an extrinsic cohesive element. In fact, The formulation developed originally by G. Wells etal. to guarantee weakly the high order derivatives of plates with only displacement field unknown and extended by L. Noels etal. for shells is derived for beam with full discontinuous elements. This new formulation can be advantageously combined, as shown first by J. Mergheim etal. , with an extrinsic cohesive approach as there is no need to modify dynamically the mesh, which is the major drawback of this approach. The pre-fractured stage is modeled by full discontinuous elements in a manner which is proved stable and consistent and the fracture is modeled by a cohesive law applied on stress resultant an stress couple defined by J.C. Simo etal. The suggested study produces two type of results. On one hand, it is shown analytically and verified by numerical examples that the presented framework has got the properties of consistency and convergence expected for a numerical scheme. On the other hand, it is proved by some test cases that the energy released during fracture process is equal to the fracture energy except in the case where the difference of internal energy between not fractured and fractured configurations is bigger than the fracture energy. In this case, the fracture occurs in one time step. The presented work proposed a novel interesting manner to take into account fracture in thin bodies. The verification made on the particularized case of beams suggested great perspectives for plates and shells which allow to simulate more complex problems. [less ▲]

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See detailConfigurando los territorios de pueblos en aislamiento voluntario: cómo hacer participar a un público oculto?
Escobar Jimenez, Kelly ULg

Conference (2010, July 21)

El problema que nos preocupa es la participación de las comunidades locales en los procesos de delimitación, demarcación y gestión de las áreas protegidas. Estos procesos comparten algunas características ... [more ▼]

El problema que nos preocupa es la participación de las comunidades locales en los procesos de delimitación, demarcación y gestión de las áreas protegidas. Estos procesos comparten algunas características: se relacionan la conservación biológica y la cultural, se propone el desarrollo sostenible, son procesos científicamente informados y abiertos a la participación de las poblaciones concernidas. Pero, de qué forma es posible cumplir con los objetivos de la gestión participativa, si las poblaciones concernidas de los territorios en cuestión son “pueblos en aislamiento voluntario”. Algunos Estados de América latina han creado zonas intangibles, por ejemplo, la Zona Intangible Tagaeri-Taromenane, implantada en 1999 en la Amazonía ecuatoriana. Estas iniciativas pueden ser una solución, pero han provocado a su vez preguntas como: ¿quién debe respetar los límites de estas zonas, la sociedad nacional y/o los “pueblos ocultos”, que los desconocen por completo? El caso del Ecuador y sus pueblos en aislamiento voluntario se replica en varios países que confluyen en la Amazonía y el Gran Chaco. Frente a este problema, los científicos (geógrafos, antropólogos, ingenieros, etc.) y los movimientos indígenas (la CONAIE en El Ecuador, por ejemplo) tienden a convertirse en representantes de los “silenciosos pueblos”. En este contexto, el argumento es que en la configuración de los territorios de pueblos en aislamiento, los científicos y los movimientos indígenas compiten por ser representantes legítimos de los “pueblos ocultos”. De un punto de vista metodológico, analizamos la acumulación progresiva de conocimientos sobre los pueblos en aislamiento voluntario. Esto lo hacemos a partir del primer Encuentro Internacional sobre los Pueblos Indígenas Aislados de la Amazonía y el Gran Chaco (2005), y de las comunicaciones y redes que se han producido en consecuencia. Movilizamos la sociología de la traducción (Actor Network Theory), para comprender cómo se estabiliza la identidad de territorios y de seres humanos en medio de negociaciones y conflictos entre el “mundo científico” y el “mundo indigenista”. Concluimos, por una parte, que los mundos “científico” e “indigenista” movilizan útiles de naturaleza similar para representar los territorios y los pueblos ocultos: narraciones, fotografías, huellas y “trofeos de guerra” (lanzas, por ejemplo). Sin embargo, durante esta “competencia” se construye, a múltiples niveles, la identidad de todas las entidades que entran en juego, incluyendo la de los científicos e indigenistas mismos [less ▲]

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See detailDemographic changes and behavioural ecology of a commensal long-tailed macaque population at Padangtegal, Bali (Indonesia)
Brotcorne, Fany ULg; Huynen, Marie-Claude ULg; Wandia, I. Nengah et al

Conference (2010, July 20)

The current anthropic pressures lead to a growth of the commensalism phenomenon with primates and humans interacting and competing for space and food. As these situations generate inter-specific conflicts ... [more ▼]

The current anthropic pressures lead to a growth of the commensalism phenomenon with primates and humans interacting and competing for space and food. As these situations generate inter-specific conflicts, an extensive analysis seems essential for primate conservation issues. Bali (Indonesia) is characterized by a high density of long-tailed macaques (Macaca fascicularis) living in association with humans. The macaque population of the Padangtegal Monkey Forest (Ubud) has been the focus of successive studies since 1986 (Wheatley, 1986; Fuentes et al., 2007). Here, we present updated data (September-December 2009) on demography, activity budget and diet of this population while analyzing variations over time. The macaques at Padangtegal showed a substantial population growth over the last thirty years (34% average growth every 6 years). In 2009, we listed 498 individuals split in 5 groups with an average adult sex ratio of 1:4.5. The home range size also increased over time (7ha in 1986 vs. 30ha in 2009) but was finally limited by surrounded human infrastructures. Consequently, the population density doubled in the course of the last 8 years and counted 16.6 macaques per hectare in 2009. On the other hand, the activity budget pattern appeared quite stable over time with a large proportion of time spent inactive and socializing and a relatively small proportion of time spent in feeding activities. This activity pattern is characteristic of provisioned primate populations. Finally, the diet composition slightly varied over time except for the radical decrease of provisioned carbohydrate-rich food proportions, following some management decisions. Macaques at Padangtegal thus show some stability in their behavioural ecology despite considerable changes in demography. Nevertheless, these positive population trends do not protect macaques from some long term risks tied to commensalism, such as inbreeding depression and increased probability of disease transmission. [less ▲]

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See detailPour une sociologie des possessions : Le rôle des techniques dans la reconnaissance identitaire
Melard, François ULg

Conference (2010, July 20)

Souvent la reconnaissance d’un mode d’existence passe par la médiation de dispositifs techniques. Nous le verrons au travers de deux cas de figure : celui de riverains (« vigies ») qui, pour défendre la ... [more ▼]

Souvent la reconnaissance d’un mode d’existence passe par la médiation de dispositifs techniques. Nous le verrons au travers de deux cas de figure : celui de riverains (« vigies ») qui, pour défendre la qualité (ici olfactive) de leur environnement, s’allient à un dispositif de mesure afin d’objectiver la nuisance, et celui de demandeurs d’asile pour lesquels l’épreuve linguistique devient le passage obligé pour la reconnaissance de leur région géographique d’origine. Que se passe-t-il lorsque la source n’est pas (encore) reconnue comme problématique (les nuisances olfactives) ou devient défaillante (absence de garantie administrative) ? Comment témoigner de son vécu lorsque les preuves habituelles manquent. Dans ces deux cas, la reconnaissance par les autorités gouvernementales de ces identités passe par des tentatives d’objectivation d’expériences sensorielles ou langagières éminemment subjectives. La question identitaire est ici traitée – d’un point de vue pragmatique – c’est-à-dire au travers des moyens concrets mobilisés par les acteurs afin d’attester d’une appartenance problématique. À cette fin, l’auteur mobilisera deux ressources théoriques et méthodologiques complémentaires : la sociologie de la traduction (Actor-Network Theory) et la sociologie des possessions (Gabriel Tarde). L’argument porte sur ces situations identitaires non stabilisées qui constituent autant d’angles morts pour une sociologie des représentations sociales. Les controverses techniques qui émaillent chacune de ces deux expertises fournissent des occasions (souvent controversées) de mise en débat sur les moyens de l’expression identitaire ou d’appartenance. Cette dernière ne s’exprimant pas au travers d’un positionnement binaire dans une structure préétablie (statut, rôle, etc.), mais au travers de la manifestation d’un degré de possessions réciproques entre humains et non-humains (en l’occurrence des odeurs ou des éléments linguistiques). Dans cette optique, tant les molécules odorantes que les éléments linguistiques participent – par leurs caractérisations – à la constitution précaire des sujets. [less ▲]

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See detailTechnological and Institutional Innovations Triggered by Farmer-to-Farmer Rice Parboiling Video in Central Benin
Zossou, Enangnon ULg

Conference (2010, July 19)

In Africa, rice production and processing tasks are allocated on gender basis, with women being responsible for much of the drudgery involved in processing. Parboiling rice is an important processing ... [more ▼]

In Africa, rice production and processing tasks are allocated on gender basis, with women being responsible for much of the drudgery involved in processing. Parboiling rice is an important processing activity in the north and the centre of Benin. Good parboiling reduces the breakage rate during milling and greatly enhances the nutritional quality of rice. Parboiling is mainly done by women in and around rice production areas and is an important income-generating activity. The traditional rice parboiling method is still dominant and does not yield quality rice. To address this, an improved rice parboiling technology was introduced in central Benin through two training methods: conventional training workshops and farmer-to-farmer video (initiated by Africa Rice Center). To compare these two methods in changing women’s rice processing practices, we interviewed 160 women and 17 women’s groups who had been exposed to both or one of the learning approaches in 16 villages. In addition, we interviewed 40 women processors in 4 control villages which had received no intervention at all. The video was well appreciated by both the NGOs and the target population as a good learning tool in rural areas and had reached three times more women than conventional training. While conventional training was biased by participant selection, stakes in per-diem payment and monopoly by the elite class, video helped to overcome local power structures and reduced conflict at the community level. Women who watched the video enhanced their creativity and adapted their learning to their environment by developing appropriate technologies. They improved their rice parboiling, leading to better quality rice. Apart from triggering local NGOs to improve their training methodology, farmer-to-farmer video also strengthened NGO relations with rural communities, and relationships between the women rice processors and input and output markets. [less ▲]

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