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See detailUna introducción a las medidas de eficiencia para reguladores de servicios públicos y de transporte
Coelli, Tim; Estache, Antonio; Perelman, Sergio ULg et al

Book published by Alfaomega (2003)

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See detailIntroducción: Transnacionalismo, diáspora y voto en el exterior
Lafleur, Jean-Michel ULg

in Lafleur, Jean-Michel (Ed.) Diáspora y voto en el exterior. La participación política de los emigrantes bolivianos en las elecciones de su país de origen (2012)

Esta introducción discute la evolución del concepto de transnacionalismo en el estudio de las prácticas políticas y sociales de los emigrantes. En este marco, el capítulo plantea que el voto en el ... [more ▼]

Esta introducción discute la evolución del concepto de transnacionalismo en el estudio de las prácticas políticas y sociales de los emigrantes. En este marco, el capítulo plantea que el voto en el exterior es una de las políticas de vinculación adoptadas por los Estados expulsores a través del cual los emigrantes continúan siendo miembros de la comunidad política, pese a su ausencia del territorio nacional. A través del estudio del voto de los emigrantes bolivianos en las elecciones presidenciales del año 2009, este libro discute el impacto del voto en el exterior sobre las relaciones entre la diáspora, el país de origen y el país de destino. [less ▲]

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See detailIntroduced goldfish affect amphibians through inhibition of sexual behaviour in risky habitats: an experimental approach
Winandy, Laurane ULg; Denoël, Mathieu ULg

in PLoS ONE (2013), 8(11), 82736

The introduction of alien species is one of the major causes of current and global biodiversity loss. The introduction of fish can be a particular threat to native amphibian populations, which are ... [more ▼]

The introduction of alien species is one of the major causes of current and global biodiversity loss. The introduction of fish can be a particular threat to native amphibian populations, which are declining worldwide. One way for amphibians to persist in such altered environments is to adopt anti-predator strategies especially at the behavioural level. However, although it has been shown that avoidance behaviour may decrease the probability of being detected by a potential predator, little is known on the consequences on sexual behaviour. In this study, we tested the hypothesis that adult Alpine newts (Ichthyosaura alpestris) use shelters more often and exhibit less sexual activity in the presence of goldfish (Carassius auratus) and that they reduce sexual activity more in risky micro-habitats than in safe environments. To this end, we assessed behavioural patterns of adult newts in a replicated laboratory design. Goldfish were present in direct contact with newts in half of the tanks. Consistently throughout the study period, significantly more newts used shelter in the presence of fish than in their absence. Newts also significantly decreased their sexual activity level overall, but specially outside the shelter when they were in direct contact with fish. These results show that fish presence can affect newts in complex ways, such as through inhibition of their reproduction. Our work highlights that integrating behaviour in conservation studies is essential to understanding the patterns of coexistence and exclusion between introduced fish and amphibians. [less ▲]

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See detailIntroducing a reasoning system based on ternary projective relationships
Billen, Roland ULg; Clementini, Eliseo

in Fisher, Peter (Ed.) Developments in Spatial Data Handling (2004)

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See detailIntroducing atmospheric attenuation within a diffusion model room-acoustic predictions
Billon, Alexis ULg; Picaut, Judicaël; Foy, Cédric et al

in Journal of the Acoustical Society of America (2008), 123(6), 4040-4043

This paper presents an extension of a diffusion model for room acoustics to handle the atmospheric attenuation. This phenomenon is critical at high frequencies and in large rooms to obtain correct ... [more ▼]

This paper presents an extension of a diffusion model for room acoustics to handle the atmospheric attenuation. This phenomenon is critical at high frequencies and in large rooms to obtain correct acoustic predictions. An additional term is introduced in the diffusion equation as well as in the diffusion constant, in order to take the atmospheric attenuation into account. The modified diffusion model is then compared with the statistical theory and a cone-tracing software. Three typical room-acoustic configurations are investigated: a proportionate room, a long room and a flat room. The modified diffusion model agrees well with the statistical theory (when applicable, as in proportionate rooms) and with the cone-tracing software, both in terms of sound pressure levels and reverberation times. [less ▲]

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See detailIntroducing dynamic benthic fluxes in 3D biogeochemical model : an application on the Black Sea North-Western shelf
Capet, Arthur ULg; Meysman, Filip; Soetaert, Karline et al

Conference (2013, April 15)

While benthic and sediment processes are now recognized as major components of the shelf iogeochemical budget, their representation in 3D biogeochemical model has for long been oversimplified [Soetaert et ... [more ▼]

While benthic and sediment processes are now recognized as major components of the shelf iogeochemical budget, their representation in 3D biogeochemical model has for long been oversimplified [Soetaert et al., 2000]. These oversimplified formulations of the bottom boundary onditions prevent to account for the response of diagenetic processes to the environment. The onsequent absence of spatial and temporal variability of benthic/pelagic fluxes may lead to mis- valuation of important terms in the biogeochemical budgets (e.g. Oxygen, Nitrogen, Carbon, hosphate). More importantly, feedbacks mechanisms within the ecosystem response to utrophication may be overlooked, such as, for instance, the sensitivity of benthic denitrification o the oxygen content in the bottom waters. The GHER-ECO 3D biogeochemical model is xtended ith a refined benthic component explicitly accounting for the effect of organic matter transport, eposition and resuspension and for the influence of the environmental conditions on the iagenetic pathways. A semi-empirical approach allows to reproduce the variability and feedbacks riven by benthic diagenesis without the computational burden of a vertically resolved sediment ayer. This simplification allows to use the coupled model for the long term runs (several ecades) required to appreciate the slow dynamics introduced by the accumulation of organic atter in the sediment layer during the years of high riverine discharge. The extended model has een implemented for the Black Sea North western shelf [Capet et al., 2012]. After a presentation f the main assumptions used to construct the benthic module, re- sults are analyzed with a focus n (1) spatial and seasonal variability of benthic diagenesis and con- sequent benthic/pelagic xchanges, (2) comparison to in-situ estimates of benthic/pelagic dissolved fluxes, (3) implication n biogeochemical budgets and eutrophication issue. Inherent limitations of the semi-empirical pproach are discussed in the perspective of the current challenges addressed to biogeochemical odels. [less ▲]

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See detailIntroducing teachers and instructional developers to learning objects Four suggested shifts in prevailing discourse
Verpoorten, Dominique ULg

in Targamadze, A (Ed.) Proceedings of the Advanced Learning Technologies and Applications conference (ALTA’2007) (2007, September 20)

Being convinced that the learning objects yields value creation promises for e-learning, the author, drawing on state-of-the art literature, his experience of two European projects dealing with learning ... [more ▼]

Being convinced that the learning objects yields value creation promises for e-learning, the author, drawing on state-of-the art literature, his experience of two European projects dealing with learning objects and his experience as a teacher, documents 4 issues regarding teachers' awareness and acceptance of this emergent instructional design approach. [less ▲]

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See detailIntroducing the Belgian Science and Technology Studies Network (BSTS)
Meyers, Gert; Van Oudheusden, Michiel ULg; Thoreau, François ULg et al

Poster (2014, September)

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See detailIntroducing the first BEDIM-André Buldgen Prize
Bindelle, Jérôme ULg

Conference given outside the academic context (2011)

What is mini-livestock ? Mini- (or micro-) livestock is a term used to group several animal species reared to produce food or feed and of usually smaller size than commonly reared species. Those species ... [more ▼]

What is mini-livestock ? Mini- (or micro-) livestock is a term used to group several animal species reared to produce food or feed and of usually smaller size than commonly reared species. Those species include rodents, snails, reptiles, insects, earthworms, etc. Although some authors consider small species and breeds of common livestock (e.g. rabbits or dwarf cattle) as mini-livestock, mini-livestock species should rather be referred to as unconventional species. Capybara, for example, the world’s largest rodent can weigh up to 90 kg which is far more than African sheep and goats whose adult weight varies between 30 and 60 kg. To be considered as mini-livestock, those unconventional species must be reared in some kind of controlled and sustainable system conversely to the mere management and hunting of game in the wild. Why keep mini-livestock instead of conventional livestock? Depending on the context, mini-livestock can have several functions that conventional livestock cannot fulfill or less efficiently. In developing countries, in urban agriculture, where land is scarce or in conflict areas, small livestock species can occupy niches unavailable to larger species. The small size of the animals reduces the financial risk as it is easy to buy, sell or kill one animal of the herd, adapting more efficiently to family’s needs for cash or food. It is also easier to maintain in terms of feed demand. Small animals have usually higher reproductive rates than larger animals. They can be raised by landless farmers harvesting forage on common lands. Finally, as they can be maintained on small farms, they have the potential to increase the productivity of the crops by recycling nutrients from crop residues and kitchen wastes into manure. Another interesting feature of mini-livestock concerns conservation strategies. Using mini-livestock principles, endangered species highly appreciated as game meat or for other purposes (e.g. skins) are domesticated and reared in sustainable ways. This helps reducing pressure on wildlife and gives the farmer access to lucrative niche market. What does BEDIM do to help people busy with mini-livestock? Considering mini-livestock are unconventional species, conversely to cattle, small ruminants, pigs or poultry, few information on rearing systems is available. Nutrition, reproduction, behavior, genetics and health issues, including potential zoonosis, are barely studied and stay unknown. This is a major limitation for the development of mini-livestock and the improvement of the systems efficiency. BEDIM (Bureau for Exchange and Diffusion of Information on Mini-livestock; www.bedim.org) was therefore created by the Professor Jacques Hardouin and his colleagues in the nineties as an international non-profit organization with the goal to stimulate information exchange and research on mini-livestock. Presently, BEDIM members are redefining BEDIM activities in the context of information exchange of the 21st century. One new activity is the award of an annual prize to encourage works done on a topic related to mini-livestock. This award is a tribute to the late Professor André Buldgen, former President of BEDIM. [less ▲]

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See detailIntroducing the multivariate dale model in population-based genetic association studies
Van Steen, Kristel ULg; Tahri, N.; Molenberghs, G.

in Biometrical Journal = Biometrische Zeitschrift (2004), 46(2), 187-202

Until recently, the most common parametric approaches to study the combined effects of several genetic polymorphisms located within a gene or in a small genomic region are, at the genotype level, logistic ... [more ▼]

Until recently, the most common parametric approaches to study the combined effects of several genetic polymorphisms located within a gene or in a small genomic region are, at the genotype level, logistic regressions and at the haplotype level, haplotype analyses. An alternative modeling approach, based on the case/control principle, is to regard exposures (e.g., genetic data such as derived from Single Nucleotide Polymorphisms - SNPs) as random and disease status as fixed and to use a marginal multivariate model that accounts for inter-relationships between exposures. One such model is the multivariate Dale model. This model is based on multiple logistic regressions. That is why the model, applied in a case/control setting, leads to straightforward interpretations that are similar to those drawn in a classical logistic modeling framework. [less ▲]

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See detailIntroducing the q-Theil index
Ausloos, Marcel ULg; Miskiewicz, J.

in Brazilian Journal of Physics (2009), 39(2A), 388-395

Starting from the idea of Tsallis on non-extensive statistical mechanics and the q-entropy notion, we recall the Theil index Th and transform it into the Th-q index. Both indices can be used to map onto ... [more ▼]

Starting from the idea of Tsallis on non-extensive statistical mechanics and the q-entropy notion, we recall the Theil index Th and transform it into the Th-q index. Both indices can be used to map onto themselves any time series in a non linear way. We develop an application of the Th-q to the GDP evolution of 20 rich countries in the time interval [ 1950 - 2003] and search for a proof of globalization of their economies. First we calculate the distances between the "new" time series and to their mean, from which such data simple networks are constructed. We emphasize that it is useful to, and we do, take into account different time "parameters": (i) the moving average time window for the raw time series to calculate the Th-q index; (ii) the moving average time window for calculating the time series distances; (iii) a correlation time lag. This allows us to deduce optimal conditions to measure the features of the network, i. e. the appearance in 1970 of a globalization process in the economy of such countries and the present beginning of deviations. The q value hereby used is that which measures the overall data distribution and is equal to 1.8125. [less ▲]

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See detailIntroductie tot de archieven van de Belgische koloniale geschiedenis
Vandersmissen, Jan ULg

Learning material (2010)

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See detailIntroductie. Nieuwsbrief 10 jaar Suggnomè.
Lauwaert, Katrien ULg

Article for general public (2009)

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See detailIntroduction
Bauden, Frédéric ULg

in Bauden, Frédéric (Ed.) Les méthodes de travail des historiens en Islam (2010)

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Bauden, Frédéric ULg

in Bauden, Frédéric; Waller, Richard (Eds.) Le Journal d'Antoine Galland (1646-1715). La période parisienne. Volume I (1708-1709) (2011)

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See detailIntroduction
Bauden, Frédéric ULg

in Bauden, Frédéric (Ed.) Tropics of Travel. 4: Homes. Proceedings of the International Conference Organized at the Université de Liège (13-15 January 2011) (in press)

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Dumont, Jonathan ULg; Marchandisse, Alain ULg; Bousmar, Éric et al

in Dumont, Jonathan; Marchandisse, Alain; Bousmar, Éric (Eds.) et al Le Corps du Prince (2014)

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Bourgeois, Marc ULg

in Bourgeois, Marc; Pace, Xavier (Eds.) Le compte courant dans la vie des affaires. Aspects juridiques, fiscaux et comptables (2013)

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Tilkin, Françoise ULg

in Art&Fact (2013), 32

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Van Schuylenbergh, Patricia; Lanneau, Catherine ULg; Plasman, Pierre-Luc

in Van Schuylenbergh, Patricia; Lanneau, Catherine; Plasman, Pierre-Luc (Eds.) L'Afrique belge aux XIXe et XXe siècles. Nouvelles recherches et perspectives en histoire coloniale (2014)

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