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See detailFirm-Level Evidence on Innovation in Spain
Artige, Lionel ULg

Conference (2009, October 08)

Detailed reference viewed: 29 (7 ULg)
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See detailPlantes médicinales et paludisme
Angenot, Luc ULg

Conference (2009, October 07)

Detailed reference viewed: 21 (3 ULg)
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See detailEvaluation des potentialités antiplasmodiales de plantes utilisées en médecine traditionnelle au Burkina Faso
Jansen, Olivia ULg; Nikiéma, Jean-Baptiste; Angenot, Luc ULg et al

Conference (2009, October 07)

Detailed reference viewed: 70 (9 ULg)
See detailLa politique étrangère de l’administration d’Álvaro Uribe Vélez : Le paradoxe entre vouloir et réussir une intégration sous-régionale latino-américaine
Parra Santamaria, Lusmiriam Andrea ULg

Conference (2009, October 03)

This communication is about the Alvaro Uribe Velez' (two periods) commercial foreign policy. By a constructivist description of this policy I showed its paradox. The objectif of working for regional ... [more ▼]

This communication is about the Alvaro Uribe Velez' (two periods) commercial foreign policy. By a constructivist description of this policy I showed its paradox. The objectif of working for regional integration (of Andean Community of Nations) was banned by this President´s unilateral political actions. [less ▲]

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See detailVitamin D, Status and perspectives
CAVALIER, Etienne ULg

Conference (2009, October 02)

Detailed reference viewed: 5 (1 ULg)
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See detailThe Management of Social Enterprises
Mertens de Wilmars, Sybille ULg

Conference (2009, October 02)

This presentation describes the ways in which social enterprises are managed in order to successfully combine social mission and economic activities.

Detailed reference viewed: 74 (7 ULg)
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See detailLe droit immobilier en Europe : perspectives d’avenir
Kohl, Benoît ULg

Conference (2009, October 02)

Detailed reference viewed: 15 (0 ULg)
See detail"Premier point: l'écriture"
Sofia, Estanislao ULg

Conference (2009, October 02)

Detailed reference viewed: 7 (0 ULg)
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See detailLe management des entreprises de l'économie sociale
Mertens de Wilmars, Sybille ULg

Conference (2009, October 02)

Detailed reference viewed: 52 (8 ULg)
See detailVoraussage und ethische Bewertung von zukünftigen Rohstoff- und Energieszenarien
Kopriwa, Nicole; Fayyaz, Sara; Hillerbrand, Rafaela et al

Conference (2009, October 01)

See detailAu-delà de la schizophrénie postcoloniale : Becoming Abigail de Chris Abani
Tunca, Daria ULg

Conference (2009, October 01)

Detailed reference viewed: 21 (1 ULg)
See detailApports de la luminescence à la chronologie de la basilique Saint-Seurin de Bordeaux
Bouvier, Armel; Guibert, Pierre; Sapin, Christian ULg et al

Conference (2009, October)

Detailed reference viewed: 1 (0 ULg)
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See detailExpected Design Space: a Bayesian perspective based on modelling, prediction and multi-criteria decision method
Lebrun, Pierre ULg; Boulanger, Bruno ULg

Conference (2009, October)

The Design Space (DS) is defined as the set of factors settings (input conditions) that provides results at least better than pre-defined acceptance limits. The proposed methodology aims at identifying a ... [more ▼]

The Design Space (DS) is defined as the set of factors settings (input conditions) that provides results at least better than pre-defined acceptance limits. The proposed methodology aims at identifying a region in the space of factors that will likely provide satisfactory results during the future use of an analytical method or process in routine, through an optimization process. First, in a Bayesian framework, DS is derived from the joint predictive posterior distribution of the responses in a multivariate multiple regression problem using non-informative as well as informative prior distribution of the parameters. The case of DS in presence of highly correlated responses will be covered. Second, a multi-criteria decision is taken with respect to the pre-defined acceptance limits, aiming to identify the DS of any analytical methods or other processes. A strong link is made between acceptance limits and objective functions to optimize, using desirability functions and index. Examples based on high-performance liquid chromatography (HPLC) methods will be given, illustrating the applicability of the methodology with highly correlated and constrained responses. [less ▲]

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See detailSound Field Modeling in Architectural Acoustics using a Diffusion Equation Based Model
Fortin, Nicolas; Picaut, Judicaël; Billon, Alexis ULg et al

Conference (2009, October)

In this paper, an implementation of a model for room-acoustic predictions in COMSOL Multiphysics is presented. The model (called diffusion model) is based on the solving of diffusion equations instead of ... [more ▼]

In this paper, an implementation of a model for room-acoustic predictions in COMSOL Multiphysics is presented. The model (called diffusion model) is based on the solving of diffusion equations instead of classical wave equations and allows simulating the sound propagation in complex geometries at high frequency. Instead of using COMSOL Multiplysics to solve directly the problem, a specific tool has been developed. It is composed of a user-friendly interface (I-Simpa) which manipulates all the physical data of the problem (geometries, acoustic properties and elements…) and generates an interoperability script to execute COMSOL Multiplysics via the generation of .m file scripts. Then, numerical results are processed by I-Simpa for the acoustic post-treatment and results display, like sound levels, reverberation times… [less ▲]

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See detailOptimization of dynamic embedded, Water based surface heat (and cold) emitting system for buildings.
Thomas, Sébastien ULg; Franck, Pierre-Yves ULg; Andre, Philippe ULg

Conference (2009, October)

This paper presents the heat flow model and the experimental test bench developed to optimize a new kind of heating floor. In the first part of the text is described the new kind of high reactivity ... [more ▼]

This paper presents the heat flow model and the experimental test bench developed to optimize a new kind of heating floor. In the first part of the text is described the new kind of high reactivity emitting device for building heating and cooling. A second part illustrates the numerical model developed to evaluate the device efficiency. Finally experimental test bench implementation and results are presented. Both computational and experimental results support the use of colder water in comparison to other heating devices. This implies energy savings for building heating. [less ▲]

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See detailImplementation of new Fast-GC-MS and UHPLC-MS/MS data in a conventional GC-MS database for heroin profiling
Debrus, Benjamin ULg; Broséus, Julian; Guillarme, Davy et al

Conference (2009, October)

Detailed reference viewed: 56 (11 ULg)
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See detailFiscalité des subsides et primes. Certificats Kyoto
Richelle, Isabelle ULg

Conference (2009, October)

Detailed reference viewed: 34 (10 ULg)
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See detailEvaluation of the suitability of the land surface model JULES for climate impact studies in Belgian ecosystem
Van Den Hoof, Catherine; Aubinet, Marc ULg; Heinesch, Bernard ULg et al

Conference (2009, October)

Detailed reference viewed: 35 (1 ULg)
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See detailMicrofossil evidence for +21 m eustatic sea level during marine isotope stage 11
van Hengstum, P. J.; Scott, Dave; Javaux, Emmanuelle ULg

Conference (2009, October)

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See detailNumerical simulations of the sound propagation in non rectilinear streets
Billon, Alexis ULg; Picaut, Judicaël; Valeau, Vincent et al

Conference (2009, October)

At high frequencies, the sound propagation can be approximated by the propagation of sound particles which are reflected and absorbed at the boundaries. This propagation follows then a transport process ... [more ▼]

At high frequencies, the sound propagation can be approximated by the propagation of sound particles which are reflected and absorbed at the boundaries. This propagation follows then a transport process. In urban canyons, this transport process can be reduced to a diffusion process. The resultant model allows one to obtain the spatial distribution of the acoustical energy in a street in a few seconds using a classical finite elements program. This diffusion model has been previously validated in rectilinear streets for different geometrical and acoustical parameters. In this paper, more complex geometries such as varying cross-sections, bents and streets crossings are dealt with. As the diffusion model only models the reverberated sound field, diffraction effects on the direct sound field at streets corners are added. The obtained results are then compared to scale model experiments. [less ▲]

Detailed reference viewed: 51 (3 ULg)
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See detailAmphibia-Reptilia: Editorial report 2008-2009
Denoël, Mathieu ULg

Conference (2009, September 30)

Detailed reference viewed: 17 (1 ULg)
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See detailPopulation displacements in a 4°C+ world
Gemenne, François ULg

Conference (2009, September 29)

Detailed reference viewed: 11 (0 ULg)
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See detailMémoire épisodique et métamémoire dans la variante comportementale de la démence fronto-temporale
Feyers, Dorothée ULg; Bastin, Christine ULg; Collette, Fabienne ULg et al

Conference (2009, September 28)

Impaired memory performance does not constitute the prominent deficit in frontotemporal dementia (FTD). Nevertheless, it has been suggested that some specific aspects of memory may be disrupted in FTD ... [more ▼]

Impaired memory performance does not constitute the prominent deficit in frontotemporal dementia (FTD). Nevertheless, it has been suggested that some specific aspects of memory may be disrupted in FTD patients, in particular, the ability to consciously recollect the context in which information has been learned (Simons et al., 2002). The aims of the current study was to investigate the states of awareness accompanying recognition memory by asking participants to make Remember/Know/Guess judgments. Concretely, 12 FDT patients and 12 matched healthy participants studied 20 word pairs. During cued recall, each trial consisted of one word from a pair and participants had to try to recall the associated word. Finally, a 5-alternative forced-choice recognition task was given and participants had to say whether they chose a word because they recollected the study context (Remember), they knew they saw the word, without recalling anything else (Know) or they guessed (Guess). Results from the cued recall and recognition parts indicated that FTD recalled less word pairs than the controls, but had similar levels of recognition performance. Nevertheless, FTD patients gave less Remember responses than the controls, and tended to give more Guess responses. To conclude, episodic memory performance in FTD was characterised by impaired self-initiated memory retrieval processes. Although global recognition memory performance was preserved, FTD patients’ memories lacked of autonoetic consciousness and were mainly based on familiarity judgments and guessing. This pattern of results is similar to that found in patients with focal frontal lobe lesions (e.g., Wheeler et al., 1995; Wheeler & Stuss, 2003) and is consistent with the idea that the memory dysfunctions observed in FTD may stem from damage to the prefrontal cortex. [less ▲]

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See detailProteomic characterization of a Chlamydomonas reinhardtii mutant lacking the mitochondrial alternative oxidase
Mathy, Grégory ULg

Conference (2009, September 27)

Conférence réalisée sur la carractérisation d'un mutant AOX- chez l'algue unicellulaire Chlamydomonas reinhardtii

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See detailSur les traces des lieux de culte isiaques du Péloponnèse
Veymiers, Richard ULg

Conference (2009, September 25)

Detailed reference viewed: 18 (3 ULg)
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See detailLes technologies textiles : outils de la médecine régénérative
Grandfils, Christian ULg

Conference (2009, September 25)

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See detailThe Paradoxes of Grace: New Impingements on Australian Literary Territory
Delrez, Marc ULg

Conference (2009, September 24)

The title of Robert Drewe’s latest novel, Grace (2005), shares with J. M. Coetzee’s antonymous Disgrace (1999) a polysemous quality which derives from both works’ attempt to capture the ethical stance of ... [more ▼]

The title of Robert Drewe’s latest novel, Grace (2005), shares with J. M. Coetzee’s antonymous Disgrace (1999) a polysemous quality which derives from both works’ attempt to capture the ethical stance of a society in a way which has personal and political ramifications at the same time. The Australian text shows some concern with the predicament of a boatload of asylum seekers from Indonesia, who later escape from their detention centre in the Kimberleys; but Drewe’s progressive denunciation of Australia’s treatment of refugees is potentially compromised by the Australian anxiety over territorial integrity which provides an unshakeable context for this kind of thematic development. More generally, my paper will explore the ambiguities attending a discursive move which seeks to absorb race into larger categories of political meaning, and the related difficulty of achieving the ‘grace’ of complete freedom from colonialist parameters in an Australian culture where some suspense over territory continues to brood. [less ▲]

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See detailSustainable dairy farming - A case study of Holsteins in a developed and an emerging country
Hammami, Hedi ULg; Rekik, Boulbaba; Bormann, Jeanne et al

Conference (2009, September 23)

Sustainability of breeding programs under the flow of exchange among various environments are conditioned by the ability of genotypes to adjust sufficiently their phenotypes in response to changes in ... [more ▼]

Sustainability of breeding programs under the flow of exchange among various environments are conditioned by the ability of genotypes to adjust sufficiently their phenotypes in response to changes in their new bio-physical conditions, and also by the capabilities of farmers to balance between environmental, ethical, social. and economic aspects. The objective of this paper was to quantify the effectiveness of genetic responses from indirect selection in high- and low- to medium- input systems using Luxembourg and Tunisian Hoisteins. The magnitude of genotype-by-environment interaction (GxE) for production traits was firstly investigated based on the country border delimitation as environmental character state. Secondly, three herd management levels reflecting feeding and management intensity were identified in each country and GxE was investigated within and across country environments. Significant GxE was detected for milk yield and persistency with large differences in genetic and permanent environmental variances between the 2 countries. Genetic correlations for 305-d milk yield and persistency between Luxembourg and Tunisia were 0.60 and 0.36. Low rank correlations obtained between estimated breeding values of common sires translated a significant re-ranking between the 2 countries. Within-country environments analysis show that the magnitude of GxE varied from only scaling effects resulting from heterogeneous variances in high-input systems to considerable re-ranking of common sires under limited feeding resources, low management care, and stressful conditions in low-input systems. Overall, this study shows that substantial differences exist between Hoisteins in terms of their sensitivity to production environ ment suspecting the sustainability of the dairying system. In high-input systems, GxE effects are expected to be easily managed but harmful effects of intensive dairy systems should be considered. Selection of breeds under less intensive production systems respecting the ruminant's specificities should be encouraged. In law-input systems, selection for adaptive traits under their specifie conditions and improvement of management conditions and husbandry practices are needed. [less ▲]

Detailed reference viewed: 89 (8 ULg)
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See detailApproches numériques et expérimentales en appui à la gestion durable des sédiments
Dewals, Benjamin ULg

Conference (2009, September 23)

Detailed reference viewed: 16 (5 ULg)
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See detailSteps to implement animal breeding for improved nutritional quality of bovine milk
Gengler, Nicolas ULg; Soyeurt, Hélène ULg

Conference (2009, September 23)

Animal improvement is always directed towards a given selection objective. These objectives in dairy cattle have been changing in the last forty years passing from simple yield only potentially associated ... [more ▼]

Animal improvement is always directed towards a given selection objective. These objectives in dairy cattle have been changing in the last forty years passing from simple yield only potentially associated with type, towards more complex ones including also functional traits as fertility and longevity. Milk composition has been selected too in most countries, however focussing only on major components, fat and protein. During the last years interest in milk quality traits, especially nutritionally quality has been increasing. Implementing breeding for additional traits first requires that animals can be evaluated for them because data is available and they are heritable enough. The objective of our research was to develop the needed steps to implement animal breeding for improved nutritional quality. Until recently data for fatty acid (FA) composition could not be obtained easily. However calibration equations for mid-infrared (MIR) spectrometry data generated in routine milk analysis done during milk recording were developed. They are used in routine in Belgium (Walloon Region) and Luxembourg and generate MIR data used to predict FA for up to 100.000 cows for every test date, therefore up to a maximum of 1 million test-day records. Multivariate test-day models were developed that allow estimating genetic parameters and ultimately breeding values as soon as enough data is available. Daily heritabilities estimated ranged between 0.1 and 0.4 showing that sufficient genetic differences exist. Because of the lack of historical data correlated traits as milk yield, fat and protein content will be analyse together with FA. For the future research on correlations between FA and other economically important traits will be done. Results are needed to integrate FA in the selection objectives. Because of the relative lack of historical data there is a high interest to research using genomic information to provide combined breeding values. [less ▲]

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See detailEnvironmental and genetic sources of variability of stearoyl Coenzyme-A desaturase 9 activity during and across lactations
Arnould, Valérie ULg; Gengler, Nicolas ULg; Soyeurt, Hélène ULg

Conference (2009, September 23)

Milk fatty acid (FA) profile is far from the optimal fat composition in regards to human health. Different natural sources of variation such as feeding or genetics could be used to modify the contents of ... [more ▼]

Milk fatty acid (FA) profile is far from the optimal fat composition in regards to human health. Different natural sources of variation such as feeding or genetics could be used to modify the contents of unsaturated fatty acids. The impact of feeding is well described; however, genetics effects on the milk FA composition are not well studied. Increasing the unsaturated fatty acids contents of bovine milk could have the potential to raise the nutritive and therapeutic values of dairy products. The stearoyl Coenzyme-A desaturase 9 (delta-9) gene was identified as a potential functional candidate gene affecting milk fat composition in dairy cattle. The objective of this research was to study the genetic variability on this enzyme activity across lactations. A total of 199,977 test-day records were obtained from 29,603 Holstein cows in first lactation, 154,267 records from 23,453 Holstein cows in second lactation, and 173,244 records from 75,887 Holstein cows in third and later lactations. The used model was a multiple-trait random regressions test-day model. Fixed effects were: herd x date of test, and class of age. Random effects were: herd x year of calving, permanent environmental, additive genetic, and residual effects. The studied traits were milk yield, protein content, percentage of fat, monounsaturated fatty acids estimated by mid-infrared spectrometry, and the ratios reflecting the delta-9 activity. Obtained heritability estimates of delta-9 as well as the genetic and phenotypic correlations varied across lactations. These results suggest potential improvements of milk fat composition based on delta-9 activity using animal selection and appropriate management practices. [less ▲]

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See detailla pandémie de grippe H1N1, un défi de taille pour le Médecin Généraliste
Burette, Philippe ULg

Conference (2009, September 22)

Detailed reference viewed: 10 (0 ULg)
See detailHypertension, prévention, traitements et conséquences
Krzesinski, Jean-Marie ULg

Conference (2009, September 22)

Detailed reference viewed: 11 (1 ULg)
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See detailPulse pressure and ambulatory arterial stiffness index (AASI) in patients wit type 1 diabetes
Philips, Jean-Christophe ULg; Marchand, Monique ULg; Saint-Remy, Annie ULg et al

Conference (2009, September 19)

Results of PP and AASI measurements performed during a 24H AMBP recording and a 3 min posture test are not superimposable, but gave complementary information, in a population with type 1 diabetes mellitus ... [more ▼]

Results of PP and AASI measurements performed during a 24H AMBP recording and a 3 min posture test are not superimposable, but gave complementary information, in a population with type 1 diabetes mellitus. Our proof-of-concept study does not support the use of AASI as a cardiovascular risk marker when calculated during a short posture test. [less ▲]

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See detailEfficacité, efficience, qualité : quelle évaluation pour quelle Justice ?
Ficet, Joël ULg

Conference (2009, September 18)

Detailed reference viewed: 55 (4 ULg)
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See detailSynthesis of novel block copolymers by cobalt-mediated radical polymerization (CMRP) and isoprene-assisted radical coupling reaction (I-ARC)
Debuigne, Antoine ULg; Jérôme, Christine ULg; Detrembleur, Christophe ULg

Conference (2009, September 17)

Nowadays, progresses in medicine, biotechnology, microelectronic and many other fields are more and more sustained by the development of novel polymer materials with constantly improved properties and ... [more ▼]

Nowadays, progresses in medicine, biotechnology, microelectronic and many other fields are more and more sustained by the development of novel polymer materials with constantly improved properties and well-defined molecular parameters. In this context, we designed an innovative and very promising tool for macromolecular engineering. This technique, called Isoprene-Assisted Radical Coupling (I-ARC), allows to couple quantitatively polymer chains preformed by Cobalt-Mediated Radical Polymerization (CMRP), an efficient controlled radical polymerization system for vinyl acetate (VAc) and acrylonitrile (AN). Typically, addition of isoprene to well-defined polymers prepared by CMRP invariably leads to the quantitative coupling reaction of the chains, as assessed by the perfect doubling of the molar mass of the polymer. Importantly, the I-ARC reaction is not limited to macromolecules with low molar masses and homopolymers, contrary to the previously reported radical chains coupling methods. Indeed, when applied to diblock copolymers, I-ARC constitutes a straightforward approach for the synthesis of telechelic symmetrical ABA triblock copolymers, as illustrated by the preparation of poly(vinyl acetate)-b-poly(acrylonitrile)-b-poly(vinyl acetate) triblock copolymers and their derivatives. [less ▲]

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See detailPrevalence of hearing voices in the general population
Krakvik, Bodil; Kalhovde, Anne-Martha; Laroi, Frank ULg et al

Conference (2009, September 17)

Detailed reference viewed: 6 (0 ULg)
See detailThe Mars ultraviolet dayglow variability: SPICAM observations and model comparison
Gérard, Jean-Claude ULg; Cox, Cédric ULg; Bougher, S. W. et al

Conference (2009, September 16)

Limb profiles of the CO Cameron and CO2+ doublet airglow have been observed over different conditions (latitude, season, SZA, F10.7). They have been individually modelled using currently accepted cross ... [more ▼]

Limb profiles of the CO Cameron and CO2+ doublet airglow have been observed over different conditions (latitude, season, SZA, F10.7). They have been individually modelled using currently accepted cross sections, and outputs from the MTGCM. They have been shown to co-vary, with a ICO/ICO2+ ratio of about 4.7, less than the modelled ratio.The peak brightness varies linearly with the F10.7 solar flux proxy, in a way compatible with the Mariner 6 and 7 observations. The intensity of both emissions is overestimated by the model (but large uncertainties exist in excitation cross sections). An increase of the altitude of both emissions has been observed during the 2005 summer season. It is a consequence of the dust load, followed by an increased thermospheric CO2 density observed with SPICAV during the same period. This density enhancement is partly predicted by GCM models. [less ▲]

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See detailTaking into account direct and indirect impacts when measuring the performance of social entreprises
Marée, Michel ULg; Mertens de Wilmars, Sybille ULg

Conference (2009, September 16)

The present article aims to provide a synthetical analysis of the various methods used to measure the non-market dimension of a product. In a first stage, we define the various notions linked to the ... [more ▼]

The present article aims to provide a synthetical analysis of the various methods used to measure the non-market dimension of a product. In a first stage, we define the various notions linked to the dimensions of the production of a "merit good": direct and indirect impacts, externalities, collective impacts, etc. We then envisage the way in which these various dimensions are generally measured in economic literature, and we highlight the advantages and drawbacks of the various methods. We attempt to demonstrate why the method based on the economic value of a non-market production, despite its advantages and its success, raises many methodological, but also, more fundamentally, conceptual questions, which jeopardise the reliability of the estimations produced. As far as the production of social enterprises is concerned, the article will thus make a case for a more classical approach, mainly based on the method of indicators. [less ▲]

Detailed reference viewed: 76 (16 ULg)
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See detailWords of thieves
Winand, Jean ULg

Conference (2009, September 15)

Detailed reference viewed: 15 (1 ULg)
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See detailScribal Variation across Textsorten and Time. A Case-Study: Amennakhte son of Ipwy
Polis, Stéphane ULg

Conference (2009, September 15)

Detailed reference viewed: 9 (1 ULg)
See detailThe very busy auroral footprint of Ganymede
Grodent, Denis ULg; Bonfond, Bertrand ULg; Radioti, Aikaterini ULg et al

Conference (2009, September 13)

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See detailElectronic Media and Political Knowledge among 16- to 21-year- old French-speaking Belgians
Fournier, Bernard ULg; Flaba, Elodie ULg

Conference (2009, September 12)

Few studies have looked at the Internet as a source of political knowledge, particularly in Belgium. In April 2009, a questionnaire distributed to 1000 young people between 16 and 21 years of age as well ... [more ▼]

Few studies have looked at the Internet as a source of political knowledge, particularly in Belgium. In April 2009, a questionnaire distributed to 1000 young people between 16 and 21 years of age as well as a citizen’s conference of another 100 young adults addressed various political issues (commitment, citizenship, participation and political interest) and measured, among other things, the impact of the Internet. This paper presents some of our preliminary findings: it confirms that the traditional idea of interest in politics is shared by one third of your sample, that the non-traditional views on politics is certainly higher, but we argue that the political use of the Web is limited to people already strongly interested in politics. [less ▲]

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See detailThe Future of Belgian Federalism through the Eyes of the Citizens
Reuchamps, Min ULg

Conference (2009, September 12)

The Future of Belgian Federalism is definitely a hot topic in Belgian politics but also in citizens’ daily life. Indeed, citizens do talk about it and wonder – and sometimes try to predict – how the ... [more ▼]

The Future of Belgian Federalism is definitely a hot topic in Belgian politics but also in citizens’ daily life. Indeed, citizens do talk about it and wonder – and sometimes try to predict – how the future of Belgium will be. Yet, we only know their attitudes on this important topic through surveys either undertaken by the media or by social scientists. Thus far, no endeavour has been done to study thoroughly and qualitatively citizens’ preferences for the future of their country. In this paper, I propose to offer a first attempt of such an analysis relying on data collected in two small citizens’ panels about the future of Belgian federalism. These two deliberative events were held in Liege (French-speaking Belgium) in September 2007 and in Antwerp (Dutch-speaking Belgium) in October 2008 and gathered respectively 64 and 23 citizens from a variety of backgrounds. During one day, the participants talked about the future of Belgian federalism with fellow citizens in focus groups as well as with politicians and experts; in addition, they answered a pre- and a post-questionnaire. Following Max Weber’s advice to construct ideal type as a way to apprehend the reality and to foster comparisons, types of citizens are constructed on the basis of the data collected in Liège and in Antwerp. While four types of French-speaking are drawn from the former – the unitarist, the unionist, the federalist, and the regionalist –, five emerge from the latter – the unitarist, the unionist, the federalist, the regionalist, and the separatist/independentist. These different types are defined in terms of the citizens’ perceptions and preferences as well as the congruence that followed the learning and deliberative process that occurred throughout the panel. Above all, the types can be compared within the panel and between the panels. In this fashion the future of Belgian federalism can be explored through the eyes of the citizens. [less ▲]

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See detailBehavioural impacts of gender stereotypes at adolescence
Gavray, Claire ULg

Conference (2009, September 11)

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See detailWho are the Most Violent Young adolescents ?
Gavray, Claire ULg; vettenburg, Nicole

Conference (2009, September 10)

The paper considers social-demographic variables, such as the family and the school profile of the group of pupils ( school years 7, 8 and 9 in the ISRD- Belgium database) who are the most violent in our ... [more ▼]

The paper considers social-demographic variables, such as the family and the school profile of the group of pupils ( school years 7, 8 and 9 in the ISRD- Belgium database) who are the most violent in our sample. We will then compare them with the less violent offenders. Taking a gender perspective, we will examine the dynamic and significant factors related to both levels of violence in each gender group in order to analyze similarities and differences. For example, previous studies and analyses have shown that seriously violent behaviour is significantly related to early family victimization of girls, a hypothesis that will also be examined. (ISRD-Panel, no. 2) [less ▲]

Detailed reference viewed: 69 (13 ULg)
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See detailEvaluating the Performance of Courts in France and Belgium : A Difficult Circle to Square
Ficet, Joël ULg

Conference (2009, September 09)

Detailed reference viewed: 30 (1 ULg)
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See detailFormasup - La professionnalisation de nos enseignants en question(s)
Poumay, Marianne ULg; Georges, François ULg

Conference (2009, September 09)

L'article souhaite stimuler les échanges entre professionnels de la formation continuée des enseignants du supérieur. Il décrit brièvement le contexte du Master Complémentaire "Formasup" de l'Université ... [more ▼]

L'article souhaite stimuler les échanges entre professionnels de la formation continuée des enseignants du supérieur. Il décrit brièvement le contexte du Master Complémentaire "Formasup" de l'Université de Liège et les courants qui influencent sa mise en oeuvre. Il se centre ensuite sur la régulation constante de ce programme, tout d'abord en soulignant quelques questions qui restent problématiques pour l'équipe encadrante, puis en énumérant des aires de questionnement ainsi que des solutions, toujours provisoires, apportées au fil du temps. Il ouvre enfin sur les perspectives quelques nouveaux défis qui ne manqueront pas de bousculer ce programme dans les années qui viennent. [less ▲]

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See detailLa carte mentale : une approche spécifique du comportement politique contemporain ?
Breux, Sandra; Reuchamps, Min ULg

Conference (2009, September 09)

If qualitative and quantitative approaches have frequently been opposed, the combination of both has also been praised. Nevertheless, few attempts, especially in the field of political science, have ... [more ▼]

If qualitative and quantitative approaches have frequently been opposed, the combination of both has also been praised. Nevertheless, few attempts, especially in the field of political science, have endeavoured to combine these two methodological approaches. Yet, a research tool seems to have the potential to break new ground in political science from both a qualitative and a quantitative perspective: the mental map. Often used in psychology (Piaget, 1987), and sometimes in geography (André et al., 1989; Fournand, 2003), political scientists have rarely used it (Laponce, 2001), however. On the basis of two empirical researches, one on Quebec City, the other one on federalism in Canada and Belgium, the aim of this paper is to discuss the pros and cons of the use of mental maps in the field of political science. Indeed, our purpose is to show that the mental map offers a contextual approach to understand individual as well as collective political behaviour, if the researcher follows strict methodological rules both in the implementation and in the analysis. [less ▲]

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See detailWealth Taxation: a survey
Pestieau, Pierre ULg

Conference (2009, September 09)

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See detail« Dessinez la Belgique » : une approche par carte mentale du fédéralisme belge
Flaba, Elodie ULg; Grandjean, Geoffrey ULg; Reuchamps, Min ULg et al

Conference (2009, September 07)

In this communication, we present the main results of the research "Draw Belgium" with a special focus on the mental maps.

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See detailDe l’usage de la carte mentale en science politique : potentialités et limites d’un outil encore peu utilisé
Breux, Sandra; Reuchamps, Min ULg

Conference (2009, September 07)

In this communication, we reflect on the use of mental map in political science. This tool could be usefully employed in political science, if one follows some specific methodological guidelines.

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See detailLe(s) génocide(s) vu(s) par des jeunes
Grandjean, Geoffrey ULg

Conference (2009, September 07)

Cette communication présente des cartes mentales complétées par des adolescents belges francophones sur la thématique des génocides. Elle offre, par ailleurs, une présentation des enjeux mémoriels qui ... [more ▼]

Cette communication présente des cartes mentales complétées par des adolescents belges francophones sur la thématique des génocides. Elle offre, par ailleurs, une présentation des enjeux mémoriels qui peuvent résulter de la transmission des faits génocidaires en Belgique francophone. [less ▲]

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See detailLes projets LIFE de restauration des biotopes tourbeux et des zones humides en Wallonie
Dufrêne, Marc ULg

Conference (2009, September 03)

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See detailQuelques réflexions sur les dénominations romanes de la framboise
Baiwir, Esther ULg

Conference (2009, September 03)

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Peer Reviewed
See detailBiodiversity Conservation and Mining : a Study Case of Ecosystem Reconstruction in Katanga (DRC)
Lebrun, Julie ULg; Seleck, Maxime ULg; Semereab, Ezana et al

Conference (2009, September 03)

The South of the Democratic Republic of Congo (Katanga) and adjoining regions in the North of Zambia comprise some of the largest ore bodies of cobalt and copper in the world. Katangan copper hills harbor ... [more ▼]

The South of the Democratic Republic of Congo (Katanga) and adjoining regions in the North of Zambia comprise some of the largest ore bodies of cobalt and copper in the world. Katangan copper hills harbor about 40 endemics as well as particular steppic plant communities. This Biological Diversity Action Plan (BDAP) is an activity program for the conservation of copper-cobalt flora and vegetation and mitigation of potential species extinction risk, during the early construction phase of the Tenke Fungurume Mining Corp. (TFM) project. Six potential taxa of concern (IUCN criteria) have been identified in the TFM concession. In situ conservation is fulfilled through the setting of a single large reserve. In parallel, important efforts have been devoted to ex-situ conservation strategy to re-establish vegetation and species after mining activities cessation. This includes: - Translocation of 3500 individuals of plants of concern to the nature reserve. - Ecosystem engineering with the reconstruction of an artificial copper/cobalt ecosystem. - Ex-situ seed bank with 300 seed samples (at least 50 seeds) collected belonging to 40 species and used for short and long term conservation, germination tests and micro-propagation tests. All these efforts represent an important step towards the conservation of copper-cobalt flora. [less ▲]

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See detailMolecular phylogeography of the common dormouse, Muscardinus avellanarius, in Europe
Mouton, Alice ULg; Grill, Andrea; Krystufek, Boris et al

Conference (2009, September)

The common dormouse, Muscardinus avellanarius is naturally rare in Europe. Recently, natural scarcity has been exacerbated by anthropogenic environmental damages. This specie is now regarded as rare or ... [more ▼]

The common dormouse, Muscardinus avellanarius is naturally rare in Europe. Recently, natural scarcity has been exacerbated by anthropogenic environmental damages. This specie is now regarded as rare or endangered, attracting conservation related research and active habitat management to assist its survival. Furthermore, obligatory thermophilous species are probably more affected by cold phases than cold-tolerant organisms. The evolutionary history of the common dormouse would therefore show significant differences compared to other species. To better understand the genetic variation and structure of this species, we developed a phylogeographic study based on sequences of 700 base pairs of the mitochondrial DNA cytochrome b gene from 102 specimens collected throughout its palearctic distribution. The obtained dataset was analysed using different phylogenetic reconstruction as well as other methods adapted to phylogeography. The analysis of the mtDNA reveals a number of surprises. The results show two major genetic lineages: the first corresponding to the Western and Italian populations; the second comprising the Balkan and the Northern populations. Furthermore, the analyses tend to propose a scenario of multiple refugia in the Italian peninsula. This pattern of ‘refugia within-refugia’ has important implications in interpreting the distribution patterns of genetic diversity within the southern peninsulas. The Calabria region and Sicily could be “hot spots” of intraspecific biodiversity of Muscardinus avellanarius. These regions would thus deserve attention when deciding Evolutionary Significant Units (“ESU) for conservation of this species. [less ▲]

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See detailLa mesure des émissions gazeuses, et plus particulièrement des odeurs, comme outil de caractérisation de matériaux et de processus
Nicolas, Jacques ULg; Romain, Anne-Claude ULg; Degrave, Christophe et al

Conference (2009, September)

La qualité d'un matériau de construction, outre ses caractéristiques physiques, est fonction de son impact sur l'environnement intérieur. Ceci pousse de plus en plus les fabricants à proposer sur le ... [more ▼]

La qualité d'un matériau de construction, outre ses caractéristiques physiques, est fonction de son impact sur l'environnement intérieur. Ceci pousse de plus en plus les fabricants à proposer sur le marché des matériaux (dont les "bio-matériaux") dont les émissions atmosphériques demeurent dans des limites acceptables. Plusieurs initiatives, essentiellement volontaires, existent au niveau européen pour évaluer ces émissions. Un des objectifs de la directive européenne des produits de construction (CPD) est d'harmoniser les méthodes d'évaluation. La comparaison de 4 chambres d'émission, de tailles différentes, l'usage de méthodes d'évaluation physico-chimiques couplées à des méthodes sensitives de mesure des odeurs et l'utilisation de la technique des nez électroniques constituent l'originalité de la démarche du projet mené par l'université de Liège en collaboration avec deux autres institutions belges. Plus généralement, le nez électronique représente un outil particulièrement bien adapté au suivi d'ambiances gazeuses au cours du temps. L'odeur émise peut ainsi servir comme "variable de process" pour suivre en continu, voire contrôler, des processus utilisant la bio dégradation de produits, comme le compostage, la bio méthanisation ou le bio séchage. [less ▲]

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See detailTheoretical Study on the Thermodynamic Properties of Al2O3 and Si3N4 at High Pressure
Xu, Bin ULg; Dong, Jianjun

Conference (2009, September)

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See detailEnsemble smoother for optimizing tidal boundary conditions and bottom roughness by assimilation of High-Frequency Radar surface currents
Barth, Alexander ULg; Alvera Azcarate, Aïda ULg; Staneva, J. et al

Conference (2009, September)

High-Frequency (HF) radars measure the ocean currents at various spatial and temporal scales. These include tidal currents, wind-driven circulation, density-driven circulation and Stokes drift. Sequential ... [more ▼]

High-Frequency (HF) radars measure the ocean currents at various spatial and temporal scales. These include tidal currents, wind-driven circulation, density-driven circulation and Stokes drift. Sequential assimilation methods updating the model state have been proven successful to correct the density-driven currents by assimilation of observations such as sea surface height, sea surface temperature and in-situ profiles. However, the situation is different for tides in coastal models since these are not generated within the domain, but are rather propagated inside the domain through the boundary conditions. For improving the modeled tidal variability it is therefore not sufficient to update the model state via data assimilation without updating the boundary conditions. The optimization of boundary conditions to match observations inside the domain is traditionally achieved through variational assimilation methods. In this work we present an ensemble smoother to improve the tidal boundary values so that the model represents more closely the observed currents. To create an ensemble of dynamically realistic boundary conditions, a cost function is formulated which is directly related to the probability of each perturbation. This cost function ensures that the perturbations are spatially smooth and that the structure of the perturbations satisfies approximately the harmonic linearized shallow water equations. Based on those perturbations an ensemble simulation is carried out using the full three-dimension General Estuarine Ocean Model (GETM). Optimized boundary values are obtained using all observations within the assimilation period using the covariances of the ensemble simulation. [less ▲]

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See detailLa recherche-action au sein des partenariats inter-organisationnels: l’entrepreneur institutionnel peut-il théoriser son propre travail d’institutionnalisation?
Xhauflair, Virginie ULg; Pichault, François ULg

Conference (2009, September)

Dans le contexte actuel de crise de la régulation sociale, la question de l’institutionnalisation de nouvelles formes de compromis est devenue centrale. Le niveau « local » est de plus en plus souvent ... [more ▼]

Dans le contexte actuel de crise de la régulation sociale, la question de l’institutionnalisation de nouvelles formes de compromis est devenue centrale. Le niveau « local » est de plus en plus souvent présenté comme l’un des leviers de la refondation de la régulation sociale. Cela implique de concevoir un nouveau cadre d’interaction entre les parties prenantes micro-économiques du marché du travail. Dans cette perspective, notre recherche s’est intéressée aux conditions d’institutionnalisation des compromis de conciliation entre besoins de flexibilité et de sécurité mis en œuvre au niveau inter-organisationnel. Nous avons adopté une approche de terrain, ancrée dans les pratiques de « flexicurité » mises en œuvre au niveau local. Pour ce faire, nous avons mobilisé, dans le cadre d’un projet de recherche-action européen, un partenariat composé des différentes parties prenantes du marché du travail de notre région. Avec leur collaboration, nous avons observé l’existant et nous avons testé de nouvelles pratiques, dans le cadre de projets pilotes, dont l’échec et/ou le succès (qualifiés en termes de « désirabilité » des compromis mis en œuvre) nous ont fourni des données riches et longitudinales. Devenus de véritables « entrepreneurs institutionnels » au travers de la stimulation et de l’accompagnement de ces expérimentations, nous avons co-construit avec nos partenaires « praticiens » une grille d’analyse des pratiques de flexicurité permettant de qualifier leur « désirabilité » et de guider la mise en œuvre de telles innovations. Nous avons ensuite réintégré le statut de chercheur, en transformant cette connaissance « locale » en une connaissance générique actionnable au travers d’un processus abductif établissant des liens entre notre propre théorisation et les connaissances existant dans le champ scientifique. [less ▲]

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See detailLatitudinal - local time distribution of the O2 and OH infrared nightglows and O density in the Venus lower thermosphere
Soret, Lauriane ULg; Gérard, Jean-Claude ULg; Saglam, Adem et al

Conference (2009, September)

Atomic oxygen has been measured in situ only above 145 km on both the day and the night sides of Venus. Limb observations obtained with the Venus Infrared Thermal Imaging Spectrometer (VIRTIS) on board ... [more ▼]

Atomic oxygen has been measured in situ only above 145 km on both the day and the night sides of Venus. Limb observations obtained with the Venus Infrared Thermal Imaging Spectrometer (VIRTIS) on board Venus Express show that the O2 infrared nightglow peaks at ~97 km [1, 2], with a mean intensity value of about 1 MR. Yet, the distribution is largely inhomogeneous, with an enhanced region of ~3 MR statistically located near the midnight meridian at low latitude [3]. The oxygen density can be mapped using the O2 airglow and CO2 density vertical distributions [4]. The O2 vol-ume emission rates are obtained with an Abel inversion of the O2 limb profiles using CO2 vertical distributions taken from the Venus International Reference Atmosphere (VIRA) model. The results show that the O density peak varies in altitude with a mean value of 105 km. It ranges from 1.0x1010 to 14.5x1011 cm-3, with a mean value of 2.2x1011 cm-3. The zonally averaged peak altitude appears to be constant while its amplitude decreases with latitude. Another approach uses the O2 volume emission rates obtained with an Abel inversion of the O2 limb profiles. In-deed, it is then possible to vertically integrate these profiles to simulate nadir observations. The resulting map gives values between 0 and 2.8 MR (with a mean value of 0.6 MR) in the north hemisphere. A statistical map created with actual nadir observations shows intensities ranging from 0 to 2.1 MR, with a mean of 0.5 MR in the south hemisphere. A combination of the two types of observations could cover Venus entire nightside. Statistical mapping of the OH Meinel emission has also been performed using limb profiles. A strong correlation with the O2 emission is revealed. The average altitude of the emission peak is ~95.3 km for the OH(1-0) band and the average intensity is 0.4 MR [5]. [less ▲]

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See detailProduction line real time near infrared (NIR) monitoring
Mantanus, Jérôme ULg; Ziemons, Eric ULg; Streel, Bruno et al

Conference (2009, September)

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See detailConformity in Landscape: a theoretical approach and the Attert Valley Nature Park case study, Belgium
Schmitz, Serge ULg

Conference (2009, September)

Maintaining or strengthening the value of the landscape is quite a new issue for the council boards of Walloon nature park. This issue was reinforced by the 2008 Walloon decree, which requires a landscape ... [more ▼]

Maintaining or strengthening the value of the landscape is quite a new issue for the council boards of Walloon nature park. This issue was reinforced by the 2008 Walloon decree, which requires a landscape charter to each nature park. This new topic poses the Park Council with the question of defining the type of landscape that should be in a nature park in Belgium. Two interesting viewpoints could be that of visual integrity and conformity. The paper questions the notion of “conformity” theoretically and empirically through the analysis of the Attert valley nature park (South Belgium). It analyzes more specifically the conformity with the natural environment and the economic context acknowledging the rule of the semiotic approach and of the management of landscape as an heritage. [less ▲]

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See detailJupiter's ultraviolet polar auroral emissions
Coumans, Valérie ULg; Bonfond, Bertrand ULg; Grodent, Denis ULg et al

Conference (2009, September)

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See detailLie group vs. classical time integrators in multibody dynamics: Formulations and numerical benchmarks
Bruls, Olivier ULg; Cardona, Alberto

Conference (2009, September)

The dynamics of flexible multibody systems with large rotations is often described using large sets of index-3 differential-algebraic equations. In this context, the Lie group structure of the dynamic ... [more ▼]

The dynamics of flexible multibody systems with large rotations is often described using large sets of index-3 differential-algebraic equations. In this context, the Lie group structure of the dynamic system may be exploited in order to provide an elegant solution to the rotation parameterization problem. The talk discusses an original Lie-group extension of the classical generalized-alpha method, which can be used to solve index-3 differential-algebraic equations in multibody dynamics. Second-order accuracy is demonstrated at least in the unconstrained case and the performance is illustrated on several critical benchmarks with high rotational speeds. The remarkable simplicity of the new algorithms opens some interesting perspectives for real-time applications, model-based control and optimization of multibody systems. [less ▲]

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See detailSensitivity in shape optimization of complex 3D geometries using level sets and non-conforming finite elements
Duysinx, Pierre ULg; Van Miegroet, Laurent ULg

Conference (2009, September)

For the last 20 years shape optimization has been stocking to penetrate industrial and real-life applications, whereas topology optimization was experiencing a fast growing soar and extensions to various ... [more ▼]

For the last 20 years shape optimization has been stocking to penetrate industrial and real-life applications, whereas topology optimization was experiencing a fast growing soar and extensions to various applications. By the way there is still a great interest in shape optimization because of the intrinsic capability of shape description to facilitate considering complex problems involving local stress and manufacturing constraints for instance. The level set description proposed by Osher and Sethian (1988) opened new perspectives to handle variable boundaries as in shape optimization. The implicit description of the geometrical entities allows for a more friendly and flexible manipulation of the geometry and overcome some restrictions related to the explicit approach of the geometry used in CAD systems: for example it is possible to reduce the topological complexity by removing or merging geometric entities (i.e. holes can merge or disappear) without degenerating the model, which was major restriction of shape optimization. A few years ago, the level set method was nicely complemented by the XFEM (eXtended Finite Element Method) proposed by Moes et al (1999). This approach greatly reduces the difficulty of considering time-variable boundaries and complex geometries by using non-conforming meshes. This is definitively an advantage to circumvent the so-called velocity field to carry out shape sensitivity and mesh relocation difficulties, especially with thin walled structures or 3D designs. The present research is continuing along and extending works by Duysinx et al (2006) and Van Miegroet and Duysinx (2007) to consider shape optimization based on a parametric level set description and XFEM. The work that is carried out in a common research project EFCONICO sponsored by the Walloon Region of Belgium aims at extending preliminary results 3 D structure and complex geometries, increasing the reliability of the method, enhancing the performances using advanced mesh generators as Gmsh, etc. In particular the paper presents new theoretical developments and their numerical implementation in sensitivity analysis with respect to parametric design variable of level sets. The developments are illustrated with numerical applications dealing with complex shape applications involving 3D geometries and the boundary conditions along design variable boundaries. [less ▲]

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