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See detailLes multiplexes en allergie
GADISSEUR, Romy ULg

Conference (2014)

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See detailShould I Access or Should I Own?
Hazee, Simon ULg; Delcourt, Cécile ULg; Van Vaerenbergh, Yves

Conference (2014)

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See detailFirst palynological record of the Silurian/Devonian boundary in the San Juan Precordillera, Argentina
Garcia Muro, V.J.; Rubinstein, C.V.; Steemans, Philippe ULg

Conference (2014)

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See detailStudy of the potentiality of insect breeding system for human food in Cambodia (Ratanakiri province)
Caparros Megido, Rudy ULg; Alabi, Taofic ULg; Nieus, Clément et al

Conference (2014)

The main purpose of this work was to optimize a cheap cricket breeding production for local farmers based on unused wild resources. Cricket development (Teleogryllus testaceus (Walker)) was compared ... [more ▼]

The main purpose of this work was to optimize a cheap cricket breeding production for local farmers based on unused wild resources. Cricket development (Teleogryllus testaceus (Walker)) was compared according to seven diets composed of different ratio of aerial parts of taro, young cassava leaves, young cashew leaves, brown rice flour (with or without banana slices) and between the traditionally used chicken feed diet. Cricket mortality was low on all diets (<10 %) excepted on the two cashew-based diets (>90 %). Mean adult body mass was significantly higher on chicken feed diet and on the two cassava-based diet than on the other. Moreover, protein percentage in cassava-feed crickets was similar with this of wild crickets. As each villager grows cassava for their tubers without using the leaves, this free available resource could be used to rear crickets in order to contribute to the reduction of protein deficiency and create new source of incomes for local farmers. [less ▲]

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See detailA constructive heuristic for the three dimensional Bin Packing Problem with transportation constraints
Paquay, Célia ULg; Schyns, Michael ULg; Limbourg, Sabine ULg

Conference (2014)

The aim of this work is to propose a Relax-And-Fix heuristic to build a good initial solution to the 3D BPP. First, a mathematical formulation has been developed taking into account several types of ... [more ▼]

The aim of this work is to propose a Relax-And-Fix heuristic to build a good initial solution to the 3D BPP. First, a mathematical formulation has been developed taking into account several types of constraints such as the stability and fragility of the boxes to pack, their possibility to rotate, the weight distribution inside the bins and their special shapes. Since this model contains a lot of integer variables, we have decided to apply the Relax-and-Fix method. We have selected several sets of variables to be the branching variables and carried out some tests. [less ▲]

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See detailWakefulness regulation: from light to cortical excitability
Vandewalle, Gilles ULg

Conference (2014)

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See detailImplementing agricultural land-use in the CARAIB dynamic vegetation model
François, Louis ULg; Jacquemin, Ingrid ULg; Fontaine, Corentin et al

Conference (2014)

CARAIB (Dury et al., iForest - Biogeosciences and Forestry, 4:82-99, 2011) is a state-of-the-art dynamic vegetation model with various modules dealing with (i) soil hydrology, (ii) photosynthesis/stomatal ... [more ▼]

CARAIB (Dury et al., iForest - Biogeosciences and Forestry, 4:82-99, 2011) is a state-of-the-art dynamic vegetation model with various modules dealing with (i) soil hydrology, (ii) photosynthesis/stomatal regulation, (iii) carbon allocation and biomass growth, (iv) litter/soil carbon dynamics, (v) vegetation cover dynamics, (vi) seed dispersal, and (vii) vegetation fires. Climate and atmospheric CO2 are the primary inputs. The model calculates all major water and CO2/carbon fluxes and pools. It can be run with plant functional types or species (up to 100 different species) at various spatial scales, from the municipality to country or continental levels. Within the VOTES project (Fontaine et al., Journal of Land Use Science, 2013, DOI:10.1080/1747423X.2013.786150), the model has been improved to include crops and meadows, and some modules have been written to translate model outputs into quantitative indicators of ecosystem services (e.g., evaluate crop yield from net primary productivity or calculate soil erosion from runoff, slope, grown species and various soil attributes). The model was run over an area covering four municipalities in central Belgium, where land-use is dominated by crops, meadows, housing and some forests and was introduced in the model at the land parcel level. Simulations were also performed for the future. In these simulations, CARAIB was combined with the Aporia Agent-Based Model, to project land-use changes up to 2050. This approach is currently extended within the MASC project (funded by Belgian Science Policy, BELSPO) to the whole Belgian territory (at 1 km2) and to Western Europe (at 20 km x 20 km). [less ▲]

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See detailLa Brigade d'intervention de la MONUSCO et le peacebuilding
Baenda Fimbo, Zacharie ULg

Conference (2014)

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See detailOrigin and evolution of the early land plants in Argentina and South America through the palynological record
Rubinstein, C.V.; Garcia Muro, V.J.; Steemans, Philippe ULg

Conference (2014)

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See detailLe devoir de confidentialité des institutions d'arbitrage
Kohl, Benoît ULg

Conference (2014)

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See detailThe arbitrability of disputes
Kohl, Benoît ULg

Conference (2014)

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See detailA bi-objective optimization model for a bimodal network of oil transportation
Belaid, Emna ULg; Saadi, Ismaïl ULg; Rigo, Philippe ULg et al

Conference (2014)

Transportation of oil requires attention for a variety of reasons, the most important being the external costs caused by adverse events. These adverse events affect not only the environment costs but also ... [more ▼]

Transportation of oil requires attention for a variety of reasons, the most important being the external costs caused by adverse events. These adverse events affect not only the environment costs but also the societal costs. In this paper, a bi-objective optimization model for a bimodal network of oil transportation is presented. The paper discusses a mathematical model that takes into account two main decision criteria, namely cost and safety. A linear programming model is presented, in which the focus is laid on the different elements that affect the performance of the bi-modal transportation chain of oil. The disturbing elements that are considered include technical failures, road conditions and vandalism acts. Thus, in this study, it is investigated how the bimodal network must be designed to avoid adverse effects caused by these disturbing elements. The goal of the approach is to maximize safety and minimize costs. Data from a real life example (i.e. the Tunisian national oil company) will be used to calibrate the model. [less ▲]

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See detailEpigenetic effects of omega-3 FA on the immune response of broiler breeder offspring
Koppenol, A.; Everaert, Nadia ULg; Franssens, L. et al

Conference (2014)

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See detailValidation of a SPH model for free surface flows
Goffin, Louis ULg; Erpicum, Sébastien ULg; Dewals, Benjamin ULg et al

Conference (2014)

Detailed reference viewed: 34 (11 ULg)
See detailHypothalamic AMPKalpha1 and neuropeptides are involved in neonatal performance of broiler chicks hatched at different times
Wang, Y.; Koppenol, A.; Lesuisse, J. et al

Conference (2014)

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See detailInnover dans le contexte de l’enseignement supérieur : une rencontre entre recherche et pratique enseignante
Poumay, Marianne ULg

Conference (2014)

Après avoir rappelé quelques-uns des défis qui se posent aujourd’hui à l’enseignement supérieur –et plus particulièrement à ses enseignants –et défini ce qui est entendu par «innovation pédagogique » ... [more ▼]

Après avoir rappelé quelques-uns des défis qui se posent aujourd’hui à l’enseignement supérieur –et plus particulièrement à ses enseignants –et défini ce qui est entendu par «innovation pédagogique », cette communication explore six portes d’entrée dans le changement. Elle épingle ensuite, en les illustrant, quelques grandes tendances innovantes en lien avec les technologies Internet et les lie systématiquement tant à la recherche qu’à l’enseignement. Les liens avec la recherche sont explorés pour chaque type d'innovation. [less ▲]

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See detailEffet de la lumière sur les fonctions cognitives non-visuelles
Vandewalle, Gilles ULg

Conference (2014)

Detailed reference viewed: 16 (0 ULg)
See detailTransgenerational and long-term effects induced by reduced protein availability by albumen removal during embryonic development in laying hens
Willems, E.; Koppenol, A.; Franssens, L. et al

Conference (2014)

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See detailClimatological influences on inland waterway transport capacity
Cools, Mario ULg; Limbourg, Sabine ULg

Conference (2014)

Climate change may affect inland waterway transport through disturbances in waterway hydrology: longer periods with strong water swells and drops. To allow fully loaded barges, the water level must be ... [more ▼]

Climate change may affect inland waterway transport through disturbances in waterway hydrology: longer periods with strong water swells and drops. To allow fully loaded barges, the water level must be neither too high (limited air draught) nor too low (limited draught). Therefore, the water level impacts the load factor of barges and thus the transportation costs. Moreover, in winter, ice jams can paralyze inland waterway traffic on the river. In this paper, the effect of various climatological changes on the capacity of inland waterway in terms of barge transport is examined. The paper focusses on the development of a methodology for assessing the sensitivity of inland waterway systems to climatological changes and takes into account an experts' opinion survey that provides insight into the perceived likelihood of the different scenarios that are investigated. The analysis focusses on the inland waterway systems in Belgium, which has the second highest density of European inland waterways. It enables the integration of inland waterway transport in the intermodal supply chain. The results are related to investment planning and management in inland waterways transport. They are intended to be interesting to researchers and to inland waterways actors developing intermodal transport as well. [less ▲]

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See detail"Synthèse des travaux"
Delruelle, Edouard ULg

Conference (2014)

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See detailShould I Access or Should I Own? Perceived Risks as Barriers to Access-Based Consumption
Hazee, Simon ULg; Delcourt, Cécile ULg; Van Vaerenbergh, Yves

Conference (2014)

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See detailRestoring order: Inheritance disputes and shifting legal consciousness in Cotonou
Andreetta, Sophie ULg

Conference (2014)

For the purpose of this paper, I will focus on the litigants’ discourses on the law and the State in inheritance cases in Cotonou. As a matter of fact, over the last few years, the number of inheritance ... [more ▼]

For the purpose of this paper, I will focus on the litigants’ discourses on the law and the State in inheritance cases in Cotonou. As a matter of fact, over the last few years, the number of inheritance disputes handled by the Beninese state courts has drastically increased. In Cotonou, State of Persons courtrooms (Chambres Etat des Personnes) – competent with regards to family matters – are so crowded that people even have to queue outside during registration. Litigants often mention that they “referred to the state” in order to “restore order” within their families. The question is: does the legal system actually manage to meet their expectations? In order to answer that question, I will focus on the legal consciousness of Beninese families and how this shifts throughout the litigation process. How do people understand and utilize state law in inheritance cases? Why do they go to court, and what do they expect from the judiciary? How does their understanding and perception of law adjust as they experience state courts? Finally, how do the aftermath of legal proceedings and the implementation process amend their legal consciousness? Within that framework, Beninese plaintiffs often go from trusting that the state would “restore order” into their family to believing that the judiciary somehow made things even worse. While scholars have investigated how race , gender, or social status influence “the ways people understand and use the law” (Merry, 1990:5), there is however little reflection on the way legal consciousness develops throughout the litigation process. There is also a point to be made about the relationship between the law and the state. In Benin, people “refer to the State” when bringing a case to court and, through the judge, “the State” is the one solving their problems. Within that context, the way people think about and experience legal proceedings in Cotonou is as much about legal consciousness as it is about state consciousness. It is about the legitimacy and efficacy of the state in delivering public service; about governance and power. [less ▲]

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See detailPt/C catalyst for PEM fuel cells: low pressure and low temperature plasma synthesis of Pt nanoparticles
Devant, Ludovic; Laurent-Brocq, Mathilde; Job, Nathalie ULg et al

Conference (2014)

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See detailLa contribution des lobes frontaux au fonctionnement exécutif
Collette, Fabienne ULg

Conference (2014)

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See detailMeteorological variation in travel behaviour
Creemers, Lieve; Wets, Geert; Cools, Mario ULg

Conference (2014)

Weather causes a variety of impacts on the transportation system. This paper contributes to the weather-related transport literature by investigating the meteorological variation in revealed preference ... [more ▼]

Weather causes a variety of impacts on the transportation system. This paper contributes to the weather-related transport literature by investigating the meteorological variation in revealed preference travel data. The main objective of this paper is to investigate the impact of weather conditions on revealed activity participation (trip motives) and revealed modal choices in the Netherlands. To this end, data from the Dutch national travel household survey 2008 was matched to hourly weather data provided by the Royal Dutch Meteorological Institute. Two GEE-MNL models are constructed, namely one for modelling the impact of weather conditions on trip motive and one to assess the effect on modal choice. The parameter estimates of the weather variables indicate that, depending on which travel attribute one focuses, other factors might play a role. Nonetheless, fog, sunshine duration and temperature have a significant impact in both models. Unexpected is the fact that snow and ice cover do not play a role at all. Nonetheless, this finding can be accounted for by the relative low occurrence of these weather types in the study area. It is important to integrate these identified impacts of weather in travel demand modelling frameworks, since this will help to achieve a higher accuracy and more realistic traffic forecasts. This allows policy makers to make better long-term and short-term decisions to achieve various political goals, such as the development towards a sustainable transportation system. Further research in this regard, should emphasize on the role of weather conditions and activity-scheduling attributes. [less ▲]

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See detailCortical excitability depends on time awake and circadian phase
Ly, Julien; Gaggioni, Giulia; Chellappa, Sarah Laxhmi ULg et al

Conference (2014)

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See detailDESIGN, MODELING AND EXPERIMANTATION OF A REVERSIBLE HP-ORC PROTOTYPE
Dumont, Olivier ULg; Quoilin, Sylvain ULg; Lemort, Vincent ULg

Conference (2014)

This paper presents an innovative system comprising a heat pump connected to a solar roof and a geothermal heat exchanger. This heat pump is also able to invert its cycle and operate as an ORC. By using ... [more ▼]

This paper presents an innovative system comprising a heat pump connected to a solar roof and a geothermal heat exchanger. This heat pump is also able to invert its cycle and operate as an ORC. By using the whole rooftop (hereunder called “absorber”) as a heat source, a large amount of heat is generated throughout the year. This heat is used in priority to cover the building annual heating needs and the surplus heat generated during the summer is utilized to generate electricity in a so-called HP/ORC module. This paper will thus focus on these two main points: designing of the prototype and results from experimentation. This paper demonstrates the feasibility of such a prototype with encouraging performance in ORC and HP modes. Experimentally, a COP of 4.2 is reached in heat pump mode and a global efficiency of 5.6 is obtained in ORC mode. Possible means of improvement and perspectives are finally described. [less ▲]

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See detailNPM Under Pressure: An Inquiry in Theory
Esposito, Giovanni ULg

Conference (2014)

This theoretical inquiry is undertaken on the basis of the problematization methodology proposed by Alvesson et Sandberg (2011) and deriving from a critical approach to management studies. In this paper ... [more ▼]

This theoretical inquiry is undertaken on the basis of the problematization methodology proposed by Alvesson et Sandberg (2011) and deriving from a critical approach to management studies. In this paper, problematization is adopted not only to question the fundamental assumptions of New Public Management (NPM) theory, but also to develop alternative assumptions to be explored in order to highlight a new way of approaching the managerial practices of public organizations. Starting from the in-house level of assumptions, NPM theoretical body has been gradually deconstructed by progressively increasing the level of abstraction and reaching the field level of assumption. The assumption’s content at each level of abstraction has been determined thanks to a continuum comparison between NPM and the Public Value Theory (PVT) school of thought. Because of its status of challenging theory, PVT has played the role of a theoretical reagent added to NPM system of thought in order to bring about a theoretical reaction enabling to spotlight problematic assumptions and generate further research questions. Such a “theoretical reaction” has shown that NPM is a functionalist theory based on a rationalistic approach to public organizations which are conceived as machines whose proper functioning depends on efficiency improvements to be achieved by means of a planning mode of management. [less ▲]

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See detailComment appréhender la complexité inhérente aux compétences ?
Georges, François ULg; Tardif, Jacques; Poumay, Marianne ULg

Conference (2014)

La compétence est complexe. À l’instar d’un cube qui ne donne accès simultanément qu’à trois de ses faces, la compétence ne laisse transparaître que certaines combinaisons de ressources. Afin d’examiner ... [more ▼]

La compétence est complexe. À l’instar d’un cube qui ne donne accès simultanément qu’à trois de ses faces, la compétence ne laisse transparaître que certaines combinaisons de ressources. Afin d’examiner les autres ressources combinées, il convient de changer de point de vue. Dans cette présentation, nous proposons une typologie des portes d’entrée utilisées par les apprenants pour rendre compte de leurs compétences. De cette analyse, nous suggérons des angles de vue qui guident l’apprenant dans le choix de portes d’entrée complémentaires de sorte que les points de vue variés assurent la prise en compte de la compétence dans toute sa complexité. Sur base de cette démarche exploratoire, nous proposons des pistes pour porter un jugement valide sur le développement des compétences. [less ▲]

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See detailDéfinir rigoureusement des trajectoires de développement pour chacune des compétences à la base de la formation
Tardif, Jacques; Poumay, Marianne ULg; Georges, François ULg

Conference (2014)

But de l'atelier: Présenter une démarche de conception et d’élaboration de trajectoires de développement de compétences inscrite dans une logique de professionnalisation graduelle de l’étudiant.

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See detailConsumer acceptance of insect-based products
Caparros Megido, Rudy ULg; Gierts, Chloé; Blecker, Christophe ULg et al

Conference (2014)

In this study, sociocultural and food formulation aspects related to edible insects were investigated on Belgian consumers. Hedonic tests were realized to assess the acceptability of insect-based burgers ... [more ▼]

In this study, sociocultural and food formulation aspects related to edible insects were investigated on Belgian consumers. Hedonic tests were realized to assess the acceptability of insect-based burgers and insect-based breads. In the first experiment, four burgers (beef, lentil, beef/insect and lentil/insect) were presented to the participants. In the second experiment, entire mealworms, mealworm bread and mealworm crepes were presented to the participants. No difference of appreciations was noticed between a beef and a beef/insect burger and between a lentil and a lentil/insect burger. Crepes made of mealworm flour were slightly preferred in comparison with mealworm bread and entire mealworms. These results confirm that shape and appearance but also popularization and information spreading are key conditions in the acceptation of insect products in western countries and that insects will preferentially be consumed, in the future, if they are presented in an invisible way and associated with familiar flavors. [less ▲]

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See detailLe règlement des litiges immobiliers sous les auspices du CEPANI
Kohl, Benoît ULg

Conference (2014)

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See detailImpact de la musculation sur la performance en natation
Jidovtseff, Boris ULg

Conference (2014)

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See detailConsumer acceptance of insect-based meat substitutes
Caparros Megido, Rudy ULg; Gierts, Chloé; Blecker, Christophe ULg et al

Conference (2014)

Meat plays an important role in the consumption pattern of most European and North American consumers. Meat production is responsible for a well known environmental pressure due to the inefficient ... [more ▼]

Meat plays an important role in the consumption pattern of most European and North American consumers. Meat production is responsible for a well known environmental pressure due to the inefficient conversion of plant protein to meat protein and alternatives sources, such as insects or algae, will be rapidly required. In a recent theorical study, de Boer et al. (2013) show that consumers prefer to eat a hybrid meat product (i.e. a mix of meat and its substitute) rather than a pure meat substitute [3]. Based on these preliminary results, hedonic tests were realized to assess the acceptability of insect-based burgers in a target population composed of people from 15 to 25 years old, considered as the future insect consumers. Isolated in a tasting booth, each participant was invited to taste four burger samples containing a ratio of 20 gr of protein by 100 gr of burger. The first burger was prepared with 95% of grounded beef (1), the second with 95% of green lentil (2), the third with 45% of green lentil and 50% of mealworms (Tenebrio molitor L.; Coleoptera, Tenebrionidae) and the fourth with 45% of grounded beef burger and 50% of mealworms. The last 5% of each burger consists of an aromatization portion containing onions, carrots, tomato paste and garlic. Participants were asked to rate each sample on a 9-point hedonic scale, where extreme sides were noted from “extremely dislike” (left) to “extremely like” (right). Tukey post-hoc comparisons on the appreciation results showed that beef-based products (with or without mealworms) were relatively preferred to lentil-based products (with or without mealworms), probably because hybrid meat burgers seem more familiar to the consumers than vegetable burgers, and that no liking differences were noticed between the two beef-based burgers and between the two insect-based burgers. These results confirm that shape and appearance are key criteria in the acceptation of meat substitute by non-vegetarian consumers and that insects will preferentially be consumed, in the future, if they are presented in an invisible way and associated with familiar flavors. [less ▲]

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See detailPrior light history impacts on cognitive brain function
Chellappa, Sarah Laxhmi ULg; Ly, Julien; Meyer, Christelle ULg et al

Conference (2014)

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See detailOn the numerical simulation of sheet metal blanking process
Canales Cardenas, Cristian ULg; Bussetta, Philippe ULg; Habraken, Anne ULg et al

Conference (2014)

One of the most widely used cutting techniques in sheet metal forming processes for mass production is the blanking process. In this process, a metallic sheet is placed between a die and a blankholder ... [more ▼]

One of the most widely used cutting techniques in sheet metal forming processes for mass production is the blanking process. In this process, a metallic sheet is placed between a die and a blankholder, and is then cut by the action of a punch which moves downward. The quality of the final product is directly linked to the resulting shape of the cut edge. Due to the complexity of the separation step, the set-up of the blanking process in practice is often driven by empirical knowledge. Thus, an accurate numerical tool is extremely desirable to optimize the setting parameters of this technique and will lead to a better understanding of the entire process. The numerical approach must be able to deal with three main issues involved in blanking: large and localized deformation, friction and contact, and ductile fracture. Furthermore, due to requirements of mass production the punch velocity is normally high and the effects of the strain rate must also be considered. Several approaches have been developed in order to model this cutting process but its accuracy still presents some numerical challenges. [less ▲]

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See detailDIMENSIONNEMENT ET EXPÉRIMENTATION D’UNE UNITÉ POMPE À CHALEUR / ORC RÉVERSIBLE
Dumont, Olivier ULg; Quoilin, Sylvain ULg; Lemort, Vincent ULg

Conference (2014)

L’union européenne doit réduire les émissions de gaz à effet de serre de 80% par rapport au niveau des années 90 d’ici 2020. Les ménages représentent 27% de la consommation finale. Dans ce cadre, les ... [more ▼]

L’union européenne doit réduire les émissions de gaz à effet de serre de 80% par rapport au niveau des années 90 d’ici 2020. Les ménages représentent 27% de la consommation finale. Dans ce cadre, les bâtiments dont la consommation d’énergie est quasi nulle (NZEB – Nearly Zero Energy Building) sont d’une importance considérable. A partir de 2019, tous les nouveaux bâtiments devront présenter une production d’énergie renouvelable supérieure à la consommation d’énergie primaire. C’est dans ce cadre que le concept de PAC/ORC prend tout son sens. Ce système innovant comprend une pompe à chaleur eau/eau (PAC) reliée à un toit solaire et à un échangeur de chaleur géothermique. Cette pompe à chaleur est également capable d'inverser son cycle et de fonctionner comme un Cycle Organique de Rankine (ORC). En utilisant le toit solaire comme source de chaleur, une grande quantité de chaleur est générée tout au long de l'année. Cette chaleur est utilisée en priorité pour couvrir les besoins de chauffage annuels et le surplus de chaleur généré au cours de l'été est utilisée pour produire de l'électricité dans l’unité PAC / ORC. L’article s’articule en 4 parties. Tout d’abord, l’introduction présente les trois modes de fonctionnement. Ensuite, les modèles des composants et l’évaluation des performances au point nominal de conception sont décrits. Par après, le dimensionnement et le choix des composants sont réalisés sur bases de simulations annuelles avec un pas de temps d’une heure. Enfin, les premiers résultats expérimentaux sont présentés. Un rendement de 5,7% est atteint en mode ORC (avec une température de condensation de 25°C et une température d’évaporation de 88°C) alors qu’un COP de 4,2 est obtenu en mode pompe à chaleur (avec une température de condensation de 61°C et une température d’évaporation de 21°C). [less ▲]

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See detailA specific example of exchange: the national churches and their corresponding "nations"
Corswarem, Emilie ULg; Berti, Michela

Conference (2014)

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See detailPrior light history impacts on higher order cognitive brain function
Chellappa, Sarah Laxhmi ULg; Ly, Julien; Meyer, Christelle ULg et al

Conference (2014)

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See detailLe référentiel quartiers durables : un nouvel outil d'aménagement durable en Wallonie
Marique, Anne-Françoise ULg; Teller, Jacques ULg

Conference (2014)

Après une phase d’expérimentation et de maturation, l’application des principes de durabilité aux projets de nouveaux quartiers est aujourd’hui entrée dans une phase de généralisation et de normalisation ... [more ▼]

Après une phase d’expérimentation et de maturation, l’application des principes de durabilité aux projets de nouveaux quartiers est aujourd’hui entrée dans une phase de généralisation et de normalisation. Le concept de « quartiers durables » s’est démocratisé et fait l’objet d’une popularité grandissante. On ne peut a priori que s’en réjouir, pour autant que cette diffusion réponde à une véritable affirmation des principes clés du développement durable à l’échelle des quartiers et qu’elle s’inscrive dans une logique territoriale à plus grande échelle. C’est dans cette optique qu’a été développé le référentiel quartiers durables, élaboré par le Centre de Recherches sur la Ville, le Territoire et le Milieu Rural (Lepur) de l’Université de Liège (Belgique), à la demande du Ministre wallon de l’Environnement, de l’Aménagement du Territoire et de la Mobilité. Ce référentiel constitue un cadre général visant à inciter et favoriser l’émergence d’opérations innovantes en matière de quartiers durables et s’inscrit dans le cadre de la Déclaration de Politique Régionale par laquelle le Gouvernement wallon s’est engagé à soutenir des opérations innovantes en la matière. Ce référentiel opérationnalise le concept de « quartier durable » en objectivant les critères minimum à respecter pour prétendre à cette appellation, considérant que, si tous les quartiers n’ont pas pour vocation d’entrer dans cette démarche, intégrer des critères transversaux de durabilité dans le plus grand nombre possible d’opérations d’urbanisme est un enjeu sociétal majeur. Concrètement, le référentiel quartiers durables s’articule autour de 5 thématiques (les potentialités du site et du projet, les ressources, les milieux naturels, les aménagements, la mixité et la participation) et de 25 critères qui couvrent les critères minimum à respecter pour inscrire un projet dans une vision transversale de développement durable. Une valeur-seuil est attribuée à chaque critère et modulée selon les potentialités du site. L’ensemble des critères sont expliqués dans un langage simple et complétés d’exemples de bonnes pratiques, de photos et de schémas explicatifs de façon à faciliter l’appropriation du référentiel par tous les acteurs de l’aménagement du territoire et à favoriser le développement des projets de quartiers réellement durables. Cet outil d’aide à l’élaboration et à l’évaluation des projets de quartiers durables est destiné aux administrations communales et régionales, aux promoteurs et aux auteurs de projet. Il peut s’appliquer à différents types de procédures urbanistiques (permis d’urbanisation, permis groupés, plans communaux d’aménagement, rapport urbanistiques et environnementaux) comme lors de concours ou d’appels à projets. Le référentiel quartiers durables a été appliqué, dans une première phase, à douze projets existants de quartiers durables (terminés ou en cours de production) afin de tester son applicabilité et d’ajuster les valeurs-seuils proposées. Le référentiel a ensuite été mobilisé dans le cadre d’une opération-pilote d’aménagement d’un quartier durable (dialogue compétitif pour la réalisation d’un nouveau quartier durable sur le site de la Sucrerie à Genappe, 291 logements, 8 hectares, 62 millions d’investissement). Validé politiquement et distribué largement (2.500 exemplaires) aux acteurs locaux de l’aménagement du territoire et de la production de quartiers durables, le référentiel quartier durable est actuellement utilisé par les acteurs locaux dans de nombreuses opérations en cours de développement. Notre contribution présentera d’abord le référentiel quartier durable et le contexte dans lequel il a été développé. Elle abordera ensuite l’application du référentiel à douze études de cas, puis un retour d’expérience sur l’opération-pilote en cours de développement à Genappe. Enfin, l’appropriation rapide du référentiel par les acteurs de l’aménagement du territoire, la reproductibilité du référentiel dans d’autres contextes et les perspectives ouvertes par ce nouvel outil d’aménagement durable concluront notre contribution. [less ▲]

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See detailEst-il possible de sécuriser l’après-restructuration ? Exploration des « cellules de reconversion » belges
Dervaux, Amélie ULg; Pichault, François ULg; Lorquet, Nadège ULg

Conference (2014)

Colloque -Les « cellules de reconversion » belges sont gérées par le service public de l’emploi et ont été créées li y a quelques années à la demande spécifique des syndicats afin de favoriser la ... [more ▼]

Colloque -Les « cellules de reconversion » belges sont gérées par le service public de l’emploi et ont été créées li y a quelques années à la demande spécifique des syndicats afin de favoriser la réinsertion des travailleurs licenciés sur le marché de l’emploi. Comment les travailleurs sont-ils accompagnés dans la période de transition professionnelle post-licenciement ? Ces cellules à vocation sécurisante le sont-elles effectivement ? [less ▲]

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See detailEffect of viscosity on the robustness of the element deletion method for crack propagation modelling
Canales Cardenas, Cristian ULg; Ponthot, Jean-Philippe ULg

Conference (2014)

The numerical simulation of crack propagation in solids is of main importance in fracture mechanics and has been extensively studied over the years. Several approaches have been developed in order to ... [more ▼]

The numerical simulation of crack propagation in solids is of main importance in fracture mechanics and has been extensively studied over the years. Several approaches have been developed in order to describe the evolving geometry of a crack [1{6], but despite the research e orts some challenges are still present. A commonly used technique in Finite Element codes is the element deletion method due to the simplicity of its numerical implementation and possible extension to 3D. Furthermore, it is possible to couple this method with any failure criterion or damage model without additional considerations. This advantages are extremely desirable for numerical approaches involving high computational costs, e.g. the multi-scale computational homogenization [7, 8], where the element deletion method can be used at the micro-scale to simulate the nucleation, growth and coalescence of micro-voids [9]. [less ▲]

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See detailThe determinations of household agricultural land use strategies in Red River Delta, Vietnam
Nguyen Thi, Dien; Vu Dinh, Ton; Lebailly, Philippe ULg et al

Conference (2014)

This research presents the determinations of household land use strategy in the context of the rapid rural changes due to the industrialization and urbanization in Vietnam. The mechanism that turns land ... [more ▼]

This research presents the determinations of household land use strategy in the context of the rapid rural changes due to the industrialization and urbanization in Vietnam. The mechanism that turns land to livelihood from both productive and non-productive processes is investigated to understand the different land use strategies of smallholders in Red River Delta region. Based on the presence of migrating members, the total selected 191 households in Hai Duong province were divided into 3 different groups to do the surveys. The research results show that local land use strategies are various in which 79.06% of surveyed households maintain the allocated land for agricultural production while 65.97% of households leave land idly at least once a year. The factors from productive process such as small landholding, high production cost and overall downward income from agricultural production meantime the greater opportunities from non-farm jobs are the main socio-economical determinations of agricultural land abandonment or less effective use. The security questions of shifting livelihood between farming and non – farming sectors, the inter-household arrangements, the social supports and the institutional constraints are non-productive elements that make the exchange and other forms of commercializing agricultural land are less prominent. The complexity of household land use strategy and its determinations not only reflects the dynamism and flexibility of peasant’s livelihood adaptation but also explain why the land concentration does not proceed faster in Red River Delta region of Vietnam. [less ▲]

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See detailANALYSE DES DETERMINANTS DE L'ACCES AU CREDIT DES EXPLOITATIONS AGRICOLES AU BENIN
Sossou, Comlan ULg; Dogot, Thomas ULg; Lebailly, Philippe ULg et al

Conference (2014)

Cet article analyse les facteurs structurels, comportementaux et de performance qui déterminent l’accès au crédit des exploitations agricoles au Bénin. Les données ont été collectées auprès de 475 ... [more ▼]

Cet article analyse les facteurs structurels, comportementaux et de performance qui déterminent l’accès au crédit des exploitations agricoles au Bénin. Les données ont été collectées auprès de 475 exploitations agricoles. Un modèle logit binomial a été utilisé au cours de l’analyse. Les résultats ont montré que la taille des ménages, la proximité des IMF, l’appartenance à un groupement de solidarité financière et le revenu issu de la principale culture sont les facteurs qui influencent l’accès au crédit. L’analyse des effets marginaux a indiqué que l’amélioration de la proximité des IMF et l’appartenance à un groupement de solidarité financière sont susceptibles d’augmenter significativement l’accès au crédit. Ainsi, nous recommandons l’amélioration du taux de couverture des IMF présentes au Bénin et la sensibilisation des exploitants agricoles à la formation et/ou l’adhésion à des groupements de solidarité financière. [less ▲]

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See detailLe tradipraticien est un acteur crédible dans l'offre des soins en territoire périurbain: Résultats d'une étude menée dans la commune de Kisenso à Kinshasa, Congo
Manzambi Kuwekita, Joseph ULg; Mbadu Kivuidi, Véronique; Bruyère, Olivier ULg et al

Conference (2013, December 19)

Cette étude examine la perception des tradipraticiens par les populations, afin d’envisager leur intégration dans les politiques de développement de Kisenso par des focus groupes en juillet 2013. 100% de ... [more ▼]

Cette étude examine la perception des tradipraticiens par les populations, afin d’envisager leur intégration dans les politiques de développement de Kisenso par des focus groupes en juillet 2013. 100% de participants reconnaissent l’existence de tradipraticiens et les avoir déjà consultés, 80% déclarent avoir expérimenté la guérison totale. Le recours au tradipraticien est justifié par l’efficacité des soins, le type de maladie, la compétence, la proximité et la possibilité de paiement à crédit. Pour 70% des participants, le tradipraticien doit améliorer les conditions d’hygiène dans la manipulation des produits. La quasi-totalité des tradipraticiens ne sont pas autorisés à fonctionner, dû notamment au coût d’actes administratifs pour l’obtention de l’autorisation et la peur de s’ouvrir aux intellectuels. 20% d’entre eux disent collaborer avec la biomédecine pour les soins de "mbasu", 20% se déclarent spécialistes en ostéologie, 20% dans les soins de "mbasu" et 60% disent tout soigner. Si l’on veut intégrer les tradipraticiens dans les politiques de développement local, on devra supprimer le coût d’actes administratifs, leur accorder des formations, intégrer les soins traditionnels dans les paquets d’activités et leur accorder le statut d’agent de l’Etat. [less ▲]

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See detailFaut-il opérer un cancer du col utérin après radiochimiothérapie initiale?
Ferron, G.; DE CUYPERE, Marjolein ULg; Querleu, D. et al

Conference (2013, December 19)

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See detailValorisation et propriétés des substances humiques des lixiviats de décharge
Tahiri, Abdelghani ULg; Destain, Jacqueline ULg; Thonart, Philippe ULg et al

Conference (2013, December 18)

Des expérimentations ont été menées dans notre laboratoire en utilisant des substances humiques (SH) extraites des lixiviats de cEntre d’Enfouissemnt Techique et des une formulation stable de SH « ... [more ▼]

Des expérimentations ont été menées dans notre laboratoire en utilisant des substances humiques (SH) extraites des lixiviats de cEntre d’Enfouissemnt Techique et des une formulation stable de SH « Humifirst » (12%d’acides humiques et 3% d’acides fulviques) de la compagnie TRADECORP s.a. (Espagne) commercialisée sous l’appelation Humifirst en vue d’en étudier leurs effets sur le développement du système racinaire de vitro-plants de bouleau et d’aulne. Les résultats montrent qu‘un traitement à faible concentration (10ppm) pendant la phase d’élongation des racines affecte la formation des racines latérales formée en présence de SH de lixiviat avec une intensité variable selon l’espèce testée. [less ▲]

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See detailOdour monitoring by sensors technology
Romain, Anne-Claude ULg

Conference (2013, December 18)

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See detaillutte contre la mortalité périnatale: actualisation de l'asphyxie périnatale
Battisti, Oreste ULg

Conference (2013, December 18)

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See detailPattern of morpho-functional diversifcation of damselfishes (Pomacentridae)
Frederich, Bruno ULg

Conference (2013, December 18)

Coral reef fishes represent one of the most outstandingly diverse assemblages of vertebrates on the planet but our understanding of their mode of diversification remains limited. Currently, some ... [more ▼]

Coral reef fishes represent one of the most outstandingly diverse assemblages of vertebrates on the planet but our understanding of their mode of diversification remains limited. Currently, some biologists are testing various hypotheses about the evolutionary history of coral reef fishes and are exploring the factors driving their diversification. During my post-doctoral research, I explored the pattern of morphological diversification of damselfishes (Pomacentridae, 386 species). I produced a time-calibrated phylogeny based on 8 loci including 208 species and collected eco-morphological data (trophic data, body shape and oral jaws shape) in more than 120 species. Using various phylogenetic comparative methods, I have illusrated that the Pomacentridae observed repeated ecological radiation and morphological convergence during their evolutionary history. I have also highlighted the primary role of a ligament joining the mandible and the hyoid in the evolution and the morpho-functional diversification of pomacentrids. [less ▲]

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See detailAnalyse d’un dispositif de (re)mise en emploi : Le cas d’un bureau de recrutement, recherche et sélection de personnel
Gérard, Julie ULg

Conference (2013, December 17)

Au cours de ces dernières années, le souci d’allier flexibilité et sécurité au travail a conduit à l’essor considérable des métiers de l’intermédiation (Orianne et Maroy, 2008). Dans le domaine de ... [more ▼]

Au cours de ces dernières années, le souci d’allier flexibilité et sécurité au travail a conduit à l’essor considérable des métiers de l’intermédiation (Orianne et Maroy, 2008). Dans le domaine de l’accompagnement et du développement de carrière, divers dispositifs privés d’aide et de suivi ont vu le jour afin de contribuer à l’amélioration des conditions de travail et de guider les travailleurs dans leurs transitions professionnelles. Par leur action, ces nouveaux dispositifs – que nous qualifierons de dispositifs d’intermédiation – semblent complexifier les temporalités sociales en créant de nouvelles opportunités d’emploi et/ou en redéfinissant les rythmes de carrière. À l’aide d’une étude de cas réalisée dans le secteur du recrutement belge, nous analyserons la capacité d’un processus de (re)mise en emploi à remplir de tels objectifs dans un contexte de gestion mixte du marché du travail. À partir d’une approche qualitative cumulant des entretiens semi-directifs et de l’observation participante, nous montrerons qu’en plus de régir l’offre et la demande de travail, ce dispositif d’intermédiation, par son système de cooptation interpersonnelle et d’accompagnement de carrière, assure la fluidification du marché et sécurise les transitions professionnelles. [less ▲]

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See detailL'ENMG, c'est le pied !
WANG, François-Charles ULg

Conference (2013, December 17)

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See detailAnalyse du métier de facilitateur et de son rôle dans la diffusion de normes d’emploi : le cas d’un bureau de chômage belge
Beuker, Laura ULg

Conference (2013, December 17)

En 2004, suite aux injonctions européennes en matière d’activation impulsées par les lignes directrices de 2003-2005, la Belgique met en place le PAC (ou Plan d’Accompagnement des chômeurs). Cette ... [more ▼]

En 2004, suite aux injonctions européennes en matière d’activation impulsées par les lignes directrices de 2003-2005, la Belgique met en place le PAC (ou Plan d’Accompagnement des chômeurs). Cette importante réforme prévoit – notamment – la mise en place de la procédure d’activation du comportement de recherche d’emploi par l’Office National de l’Emploi (Ou l’ONEm). Désormais, des agents sont spécifiquement dédiés à l’évaluation des efforts menés par les demandeurs d’emploi (ou DE) pour s’insérer sur le marché du travail : ce sont les facilitateurs. Si la procédure d’évaluation est officiellement définie, la décision, quant à elle, est bel et bien fonction de l’agent, qui doit interpréter le cadre réglementaire général à l’aune de la situation singulière du demandeur d’emploi. À l’aide d’une étude de cas réalisée au sein d’un bureau de chômage situé en Belgique francophone, nous allons tenter d’ouvrir la « boîte noire » du jugement des facilitateurs. À partir d’une approche qualitative cumulant des entretiens semi-directifs et de l’observation d’interactions entre facilitateurs et demandeurs d’emploi, nous montrerons que la décision des facilitateurs n’est ni arbitraire, ni déterminée. Elle est, au contraire, le fruit de la mobilisation d’une multitude d’appuis conventionnels dans l’action (Dodier, 1993). En outre, dans la lignée des travaux de Benarrosh (2000 ; 2006 ; 2012) nous démontrerons que ces agents sont des « pourvoyeurs » de normes institutionnelles précises à destination des demandeurs d’emploi. [less ▲]

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See detailA new methodological approach for error distributions selection
Hambuckers, julien ULg; Heuchenne, Cédric ULg

Conference (2013, December 15)

Since 2008 and its financial crisis, an increasing attention has been devoted to the selection of an adequate error distribution in risk models, in particular for Value-at-Risk (VaR) predictions. We ... [more ▼]

Since 2008 and its financial crisis, an increasing attention has been devoted to the selection of an adequate error distribution in risk models, in particular for Value-at-Risk (VaR) predictions. We propose a robust methodology to select the most appropriate error distribution candidate, in a classical multiplicative heteroscedastic model. In a first step, unlike to the traditional approach, we do not use any GARCH-type estimation of the conditional variance. Instead, we propose to use a recently developed nonparametric procedure: the Local Adaptive Volatility Estimation (LAVE). The motivation for using this method is to avoid a possible model misspecification for the conditional variance. In a second step, we suggest a set of estimation and model selection procedures tests based on the so-obtained residuals. These methods enable to assess the global fit of a given distribution as well as to focus on its behaviour in the tails. Finally, we illustrate our methodology on three time series (UBS stock returns, BOVESPA returns and EUR/USD exchange rates). [less ▲]

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See detailRésister par ou résister à la médiation culturelle : comment évaluer les dispositifs de médiation ?
Servais, Christine ULg

Conference (2013, December 13)

Je m’interroge ici sur les moyens (scientifiques) dont nous disposons pour poser et étayer des affirmations du type : la médiation culturelle est essentielle au partage du sens et par conséquent à ce ... [more ▼]

Je m’interroge ici sur les moyens (scientifiques) dont nous disposons pour poser et étayer des affirmations du type : la médiation culturelle est essentielle au partage du sens et par conséquent à ce qu’on appelle si rapidement le “vivre ensemble”. Je voudrais proposer ceci : contrairement à ce qu’affirmait Davallon dans le numéro de MEI consacré aux méditeurs , il faut réintroduire la conflictualité dans la notion de médiation si nous voulons pouvoir l’évaluer ; si nous faisons cela , nous nous interdisons de fait toute possibilité d’une évaluation objective des dispositifs de médiation mais nous lui rendons une dimension propement politique. C’est sur une telle conception critique de la médiation qu'est basée cette intervention ; elle se réfère à un modèle fondé sur la mise en lien entre l’expérience esthétique et la possibilité d’une communauté ; ce modèle, théorisé par Kant, est très longuement commenté et interrogé par Arendt, en particulier dans La Crise de la culture et dans Juger. Sur la philosophie politique de Kant. Ces références s’inscrivent également dans le cadre théorique dessiné par les notions de malentendu et de mésentente telles qu’elles sont problématisés respectivement par Derrida et Rancière. [less ▲]

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See detailLittérature latino-américaine de la migration: au-delà du concept
Berlage, Pauline ULg

Conference (2013, December 13)

La littérature de la migration, encore peu développée en Europe dans le domaine hispanique est cependant un véritable courant littéraire en Amérique du Nord. Au Canada francophone, par exemple, ce courant ... [more ▼]

La littérature de la migration, encore peu développée en Europe dans le domaine hispanique est cependant un véritable courant littéraire en Amérique du Nord. Au Canada francophone, par exemple, ce courant regroupe aujourd'hui un nombre important de romans, de contes ou de poésie ainsi qu’une énorme littérature secondaire. Dans le cas de la littérature hispano-américaine en Europe, nous sommes souvent confrontés à un paradoxe à l’heure d’étudier une création littéraire dans cette perspective. En effet, l’appellation même de “littérature de la migration latino-américaine” pose question car à la fois ces romans semblent partager des traits communs avec la littérature hispanique du vingtième siècle, à la fois ces œuvres s’avèrent être innovantes tant par leurs thématiques que par les traits stylistiques qu'elles proposent. Par conséquent, comment définir le champ d’étude de la littérature de la migration latino-américaine ? Quelle serait la validité d’une telle appellation? Ne pourrait-on pas définir toute la production littéraire contemporaine comme littérature transnationale ? Voici les questions qui me sont apparues tout au long de ma recherche concernant la validité et l’éventail de possibilité que présente la notion de littérature de la migration latino-américaine. Mon objectif est donc de dépasser le débat terminologique pour souligner certaines des nombreuses questions que ce nouveau domaine de recherche suscite. [less ▲]

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See detailAfrican Migration: on the centrality of Europe
Demart, Sarah ULg

Conference (2013, December 13)

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See detailConclusions
Masson, Christophe ULg

Conference (2013, December 13)

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See detailThe Taste of the Eye and the Sight of the Tongue
Von Hoffmann, Viktoria ULg

Conference (2013, December 13)

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See detailL'ENMG dans la pathologie de la face dorsale du pied
WANG, François-Charles ULg

Conference (2013, December 13)

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See detailRole of MCM proteins in HTLV-1 transcription
Barez, Pierre-Yves ULg; Carpentier, Alexandre ULg; Boxus, Mathieu et al

Conference (2013, December 13)

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See detailDrowsiness monitoring for road safety
Wertz, Jérôme ULg; François, Clémentine ULg; Verly, Jacques ULg

Conference (2013, December 13)

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See detailImaginer-lire Le Capital. Approche des Nachrichten aus der ideologischen Antike
Pieron, Julien ULg

Conference (2013, December 13)

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See detailLe CRP et ses opérateurs : les usages de la confiance
Remy, Céline ULg

Conference (2013, December 12)

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See detailNuclear Energy: Between Legitimacy and Threat
Michel, Quentin ULg

Conference (2013, December 12)

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See detailExercice physique dans les maladies neuromusculaires
WANG, François-Charles ULg

Conference (2013, December 12)

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See detailCoupling of hydrogeological models with hydrogeophysical data to characterize seawater intrusion and shallow geothermal systems
Beaujean, Jean ULg; Kemna, Andreas; Engesgaard, Peter et al

Conference (2013, December 12)

While coastal aquifers are being stressed due to climate changes and excessive groundwater withdrawals require characterizing efficiently seawater intrusion (SWI) dynamics, production of geothermal energy ... [more ▼]

While coastal aquifers are being stressed due to climate changes and excessive groundwater withdrawals require characterizing efficiently seawater intrusion (SWI) dynamics, production of geothermal energy is increasingly being used to hinder global warming. To study these issues, we need both robust measuring technologies and reliable predictions based on numerical models. SWI models are currently calibrated using borehole observations. Similarly, geothermal models depend mainly on the temperature field at few locations. Electrical resistivity tomography (ERT) can be used to improve these models given its high sensitivity to TDS and temperature and its relatively high lateral resolution. Inherent geophysical limitations, such as the resolution loss, can affect the overall quality of the ERT images and also prevent the correct recovery of the desired hydrochemical property. We present an uncoupled and coupled hydrogeophysical inversion to calibrate SWI and thermohydrogeologic models using ERT. In the SWI models, we demonstrate with two synthetic benchmarks (homogeneous and heterogeneous coastal aquifers) the ability of cumulative sensitivity-filtered ERT images using surface-only data to recover the hydraulic conductivity. Filtering of ERT-derived data at depth, where resolution is poorer, and the model errors make the dispersivity more difficult to estimate. In the coupled approach, we showed that parameter estimation is significantly improved because regularization bias is replaced by forward modeling only. Our efforts are currently focusing on applying the uncoupled/coupled approaches on a real life case study using field data from the site of Almeria, SE Spain. In the thermohydrogeologic models, the most sensitive hydrologic parameters responsible for heat transport are estimated from surface ERT-derived temperatures and ERT resistance data. A real life geothermal experiment that took place on the Campus De Sterre of Ghent University, Belgium and a synthetic case are tested. They consist in a thermal injection and storage of water in a shallow sandy aquifer. The use of a physically-based constraint accounting for the difference in conductivity between the formation and the tap injected water and based on the hydrogeological model calibrated first on temperatures is necessary to improve the parameter estimation. Results suggest that time-lapse ERT data may be limited but useful information for estimating groundwater flow and transport parameters for both the convection and conduction phases. [less ▲]

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See detailPLS analysis of fMRI data on cognitive processes
Bahri, Mohamed Ali ULg; Genon, Sarah ULg; Bastin, Christine ULg et al

Conference (2013, December 12)

Cognitive processes like memory and self-referential are known to be underlined by extended neural networks. To study these complex processes, multivariate methods appear as the methods of the first ... [more ▼]

Cognitive processes like memory and self-referential are known to be underlined by extended neural networks. To study these complex processes, multivariate methods appear as the methods of the first choice since they take into account the functional integration. Partial Least Square (PLS) was used to study neural networks related to memory and self-referential processing in Alzheimer’s disease patients (AD) and two examples were presented. In the first one, we investigated the metabolic correlates of two forms of memory (conjunctive and relational memory performances) in AD. PLS identified two different brain networks highlighting correlations of the two types of memory and the glucose metabolism. In the second example, we assessed brain regions engaged during self-referential processing of information in AD patients during a task related fMRI study. PLS identified a wide brain network showing the effect of self- vs. other-referential processing. In contrast to univariate methods, PLS showed to be suitable for the study of cognitive processes. [less ▲]

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See detailWhen does the market feel it ? Magnitude, speed and persistence of market reactions to cross-listings
Muller, Aline ULg; Biell, Elizabeth; Mouchette, Xavier ULg

Conference (2013, December 11)

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See detailScikit-Learn: Machine Learning in the Python ecosystem
Louppe, Gilles ULg; Varoquaux, Gaël

Conference (2013, December 10)

The scikit-learn project is an increasingly popular machine learning library written in Python. It is designed to be simple and efficient, useful to both experts and non-experts, and reusable in a variety ... [more ▼]

The scikit-learn project is an increasingly popular machine learning library written in Python. It is designed to be simple and efficient, useful to both experts and non-experts, and reusable in a variety of contexts. The primary aim of the project is to provide a compendium of efficient implementations of classic, well-established machine learning algorithms. Among other things, it includes classical supervised and unsupervised learning algorithms, tools for model evaluation and selection, as well as tools for data preprocessing and feature engineering. This presentation will illustrate the use of scikit-learn as a component of the larger scientific Python environment to solve complex data analysis tasks. Examples will include end-to-end workflows based on powerful and popular algorithms in the library. Among others, we will show how to use out-of-core learning with on-the-fly feature extraction to tackle very large natural language processing tasks, how to exploit an IPython cluster for distributed cross-validation, or how to build and use random forests to explore biological data. [less ▲]

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