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See detailAssessing the Impact of Weather on Traffic Intensity
Cools, Mario ULg; Moons, Elke; Wets, Geert

in Proceedings of the 87th Annual Meeting of the Transportation Research Board (DVD-ROM) (2008)

The investigation of weather effects on traffic intensity is important from a road safety point of view, because traffic intensity is noted as the first and primary determinant of traffic safety. Next to ... [more ▼]

The investigation of weather effects on traffic intensity is important from a road safety point of view, because traffic intensity is noted as the first and primary determinant of traffic safety. Next to traffic safety, weather conditions affect other predominant traffic variables, namely traffic demand and traffic flow. Therefore the main objective of this study is the identification and comparison of weather effects on traffic intensity at different site locations. To assess the impact of weather conditions on traffic intensity, the upstream and downstream traffic of four traffic count locations are considered. The traffic intensity data originate from minute data coming from single inductive loop detectors, collected by the Flemish Traffic Control Center. Data concerning weather events were recorded by the Royal Meteorological Institute of Belgium. The main modeling philosophy envisaged in this study to identify and quantify weather effects is the linear regression approach. Most appealing result of this study for policy makers, is the heterogeneity of the weather effects between different traffic count locations, and the homogeneity of the weather effects on upstream and downstream traffic at a certain location. The results also indicated that snowfall, rainfall and wind speed have a clear diminishing effect on traffic intensity, while maximum temperature significantly increases traffic intensity. Further generalizations of the findings are possible by studying weather effects on local roads and by shifting the scope towards travel behavior. Simultaneously modeling of weather conditions, traffic intensity rates, collision risk and activity travel behavior is certainly a key challenge for further research. [less ▲]

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See detailSelf-Adapting Parameters in Simulation of Management Systems
Dubois, Daniel ULg; Holmberg, Stig

in Trappl, Robert (Ed.) CYBERNETICS AND SYSTEMS 2008 (2008)

This paper deals with a new version of a web-based software simulation tool MLD-STAR (Management Learning and Decision making – Simulation Tool with Anticipation and Retardation), for the numerical ... [more ▼]

This paper deals with a new version of a web-based software simulation tool MLD-STAR (Management Learning and Decision making – Simulation Tool with Anticipation and Retardation), for the numerical simulation of mathematical models of management systems. A new algorithm is presented to automatically compute the numerical values of the parameters of models to be simulated. The main idea consists in generating successive sets of values of the parameters of the model with a random number generator, and to use a selection criterion for accepting or rejecting the sets of values. This self-adapting parameters method is so based on a Darwinian process of selection. Results of simulations with such self-adapting parameters are given in using the mathematical model given in Dubois and Holmberg (2006). [less ▲]

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See detailThe problem of the consumer may be the solution. Sustainable production from the consumers perspective: the emergence of the "Gaume grassland steer" in Belgium
Stassart, Pierre M ULg

in Stassart, Pierre M (Ed.) Proceedings of the "Sustainable Consumption Alternative Agrifood Systems (2008)

This paper examines the question of sustainable consumption through the consumer’s contribution to the various dimensions of sustainability. The consumer’s participation reveals legitimacy conflicts in ... [more ▼]

This paper examines the question of sustainable consumption through the consumer’s contribution to the various dimensions of sustainability. The consumer’s participation reveals legitimacy conflicts in the process of designing new production systems. The different dimensions of sustainability can be linked to different legitimacy models. When the building of new systems entails a concerted process involving dialogue and deliberation among stakeholders from the agricultural and environmental sectors, various legitimacy principles are mobilized and confront each other through the spokespeople who represent the interests involved. This specific case concerns beef produced from the ”Gaume grassland steer,” a system that can be characterized as agroecological and territorial. The consumers who were involved contributed, through deliberative processes, to the coexistence of various legitimacy principles and stakeholder cooperation. This capacity could be linked to their multiple and fuzzy identities because their identities were shown to be flexible, changing with the institutional setting, which was sometimes consumer-oriented and sometimes territory-driven. This allowed them to act as mediators between environmentalists and farmers. To do this they had to be able to accept the limits of each legitimacy principle and contest the possibility of imposing only one principle on all the others. In so doing they helped the heterogeneous actors to reach compromises by referring to a kind of patrimonial common good. [less ▲]

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See detailAu paradis de Johan Muyle
Bawin, Julie ULg

in Flux News (2008), (46), 12

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See detailLa liberté de tout oser. Le Mac’s donne carte blanche à Jean-Marc Bustamante
Bawin, Julie ULg

in Art Même : Chronique des Arts Plastiques de la Communauté française de Belgique (2008), (41), 34-35

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See detailModel-based identification and diagnosis of a porcine model of induced endotoxic shock with hemofiltration
Starfinger, C.; Chase, J. G.; Hann, C. E. et al

in Mathematical Biosciences (2008), 216(2), 132-139

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See detailDix arguments laïques contre l'interdiction législative du voile
Jacquemain, Marc ULg

in Jacquemain, Marc; Rosa Rosso, Nadine (Eds.) Du bon usage de la laïcité (2008)

The project of legal prohibition of muslim veil por the pupils seems to oppose a traditional, religious point of view and a secularist one. The chapter argues that this position does not hold and that ... [more ▼]

The project of legal prohibition of muslim veil por the pupils seems to oppose a traditional, religious point of view and a secularist one. The chapter argues that this position does not hold and that there are strong normative secularist arguments against this prohibition. [less ▲]

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See detailVaricella vaccination in Japan, South Korea, and Europe.
Sadzot-Delvaux, Catherine ULg; Rentier, Bernard ULg; Wutzler, Peter et al

in Journal of Infectious Diseases (2008), 197 Suppl 2

The most extensive use of varicella vaccine has been in the United States and Canada, where it is universally recommended. However, a number of other countries now have recommendations for use of the ... [more ▼]

The most extensive use of varicella vaccine has been in the United States and Canada, where it is universally recommended. However, a number of other countries now have recommendations for use of the vaccine, which has been expanding in Europe and Latin America. In this article, we review information concerning varicella vaccination in Japan, where the vaccine was first developed, and in South Korea and parts of Europe. Despite the worldwide availability of an efficient vaccine, varicella vaccination policy is highly variable from country to country. The recent development of a tetravalent vaccine against measles, mumps, rubella, and varicella could modify this variability in the future. It is evident that efforts to control varicella will spread gradually to all continents. [less ▲]

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See detailQuelles compétences documentaires et informationnelles à l’entrée dans l’enseignement supérieur ? Résultats d’une enquête EduDOC-CIUF en Communauté francaise de Belgique
Thirion, Paul ULg; Pochet, Bernard ULg

in Cahiers de la Documentation (2008), 45(4), 4-17

Although universities are providing more and more information literacy training for their undergraduate students, the students’ real level of information literacy at the beginning of their studies has ... [more ▼]

Although universities are providing more and more information literacy training for their undergraduate students, the students’ real level of information literacy at the beginning of their studies has never been assessed. Hence EduDOC has decided to team up with the CIUF ‘Library’ Commission in order to organize a wide study aiming at objectively describing this initial level of information literacy, at identifying the students’ main weaknesses, as well as allowing instructors to adjust their training on this basis. The questionnaire was based on a similar study carried out in Québec and contains 20 questions grouped in five themes relating to information search steps. It was sent in September 2007 to a random sample of students entering a higher education institution in the French Speaking Community of Belgium for the first time. The students’ rather poor results confirm that organizing an information literacy program is imperative if students are to perform well in their studies. [less ▲]

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See detailLa cité de Liège vers 1730
Donneau, Olivier ULg

in Le patrimoine de l'Université de Liège (2008)

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See detailLe livre en exil : le cas du Refuge huguenot (1685-1750)
Donneau, Olivier ULg

in Livre et l'estampe (Le) (2008), 54

Huguenots scattered by the Revocation of the Edict of Nantes often devote themselves to books' world. Book can be used in several ways by the Refugees. It permits to strengthen the weakened community.

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See detailWerner Rolevinck, Fasciculus temporum (Nederlandse vertaling)
Adam, Renaud ULg

in De Schepper, Marcus; Kelders, Ann; Pauwels, Jan (Eds.) In de ban van boeken. Grote verzamelaars uit de negentiende eeuw in de Koninklijke Bibliotheek van België (2008)

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See detailAndreas de Escobar, Canones poenitentiales
Adam, Renaud ULg

in De Schepper, Marcus; Kelders, Ann; Pauwels, Jan (Eds.) Les seigneurs du livre. Les grands collectionneurs du XIXème siècle à la Bibliothèque royale de Belgique (2008)

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See detailAndreas de Escobar, Canones poenitentiales
Adam, Renaud ULg

in De Schepper, Marcus; Kelders, Ann; Pauwels, Jan (Eds.) In de ban van boeken. Grote verzamelaars uit de negentiende eeuw in de Koninklijke Bibliotheek van België (2008)

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See detailSmall-scale sedimentary structures and permeability in a cross-bedded aquifer
Huysmans, Marijke; Peeters, Luk; Moermans, Gert et al

in Journal of Hydrology (2008), (361), 41-51

The objective of this study is to investigate the relation between small-scale sedimentary structures and permeability in the Brussels Sands formation, an early Middle-Eocene shallow marine sand deposit ... [more ▼]

The objective of this study is to investigate the relation between small-scale sedimentary structures and permeability in the Brussels Sands formation, an early Middle-Eocene shallow marine sand deposit in Central Belgium that constitutes a major groundwater source in the region. A field campaign was carried out consisting of field observations of the sedimentary structures and in situ measurements of air permeability. The sedimentary structures were interpreted, sketched, digitally photographed and measured in a representative outcrop. Additionally, a total of 2750 cm-scale air permeability measurements were carried out in situ. Analysis of the spatial distribution of sedimentary structures and permeability shows that clay-rich sedimentary features such as bottomsets and distinct mud drapes exhibit a different statistical and geostatistical permeability distribution compared to the other lithofacies in the cross-bedded sands. Spatial analysis of the air permeability data shows that permeability anisotropy in the cross-bedded lithofacies is dominated by the foreset lamination orientation. These results show that smallscale sedimentary heterogeneity strongly influences the local spatial distribution of the hydraulic properties and results in permeability heterogeneity and stratification that would produce anisotropy in upscaled permeability values. [less ▲]

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See detailPatronage, Devotion and Gender Roles in Burgundian Court Art
L'Estrange, Elizabeth ULg

in Art History (2008), 31(1), 117-122

Review of Pearson's book Envisioning Gender in Burgundian Devotional Art, 1350-1530 and the exhibition and related catalogue, Women of Distinction: Margaret of York and Margaret of Austria, held in ... [more ▼]

Review of Pearson's book Envisioning Gender in Burgundian Devotional Art, 1350-1530 and the exhibition and related catalogue, Women of Distinction: Margaret of York and Margaret of Austria, held in Mechelen in 2005 [less ▲]

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See detailEffect Of A Bovine Colostrum Whey Supplementation On Growth Performance, Faecal Escherichia Coli Population And Systemic Immune Response Of Piglets At Weaning
Boudry, Christelle ULg; Dehoux, Jean-Paul; Wavreille, José et al

in Animal (2008), 2(5), 730-737

This study examined the effect of a bovine colsotrum whey supplementation on growth performance, feed intake, faecal Escherichia coli population and systemic immune response of piglets.

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See detailConceptual model uncertainty in groundwater modeling: Combining generalized likelihood uncertainty estimation and Bayesian model averaging
Rojas, Rodrigo; Feyen, Luc; Dassargues, Alain ULg

in Water Resources Research (2008), 44

Uncertainty assessments in groundwater modeling applications typically attribute all sources of uncertainty to errors in parameters and inputs, neglecting what may be the primary source of uncertainty ... [more ▼]

Uncertainty assessments in groundwater modeling applications typically attribute all sources of uncertainty to errors in parameters and inputs, neglecting what may be the primary source of uncertainty, namely, errors in the conceptualization of the system.Confining the set of plausible system representations to a single model leads to underdispersive and prone-to-bias predictions. In this work, we present a general and flexible approach that combines generalized likelihood uncertainty estimation (GLUE) and Bayesian model averaging (BMA) to assess uncertainty in model predictions that arise from errors in model structure, inputs, and parameters. In a prior analysis, a set of plausible models is selected, and the joint prior input and parameter space is sampled to form potential simulators of the system. For each model, the likelihood measures of acceptable simulators, assigned to thembased on their ability to reproduce observed systembehavior, are integrated over the joint input and parameter space to obtain the integrated model likelihood. The latter is used to weight the predictions of the respective model in the BMA ensemble predictions. For illustrative purposes, we applied the methodology to a three-dimensional hypothetical setup. Results showed that predictions of groundwater budget terms varied considerably among competing models; despite this, a set of 16 head observations used for conditioning did not allow differentiating between the models. BMA provided average predictions that were more conservative than individual predictions obtained for individual models. Conceptual model uncertainty contributed up to 30% of the total uncertainty. The results clearly indicate the need to consider alternative conceptualizations to account for model uncertainty. [less ▲]

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See detailCentral Exclusive Dijet Production
Dechambre, Alice ULg; Cudell, Jean-René ULg; Ivanov, Igor ULg et al

in AIP Conference Proceedings (2008), 1038

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