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See detailMédée d’Euripide et Médée de Sénèque : bases de données et outils statistiques du LASLA
Vandersmissen, Marc ULiege

Conference (2017, December 15)

The LASLA (Laboratoire d’Analyse Statistique des Langues Anciennes), at the University of Liege, has been annotating Latin and Greek texts since 1962. Its results were published in Indices verborum. The ... [more ▼]

The LASLA (Laboratoire d’Analyse Statistique des Langues Anciennes), at the University of Liege, has been annotating Latin and Greek texts since 1962. Its results were published in Indices verborum. The laboratory has also been collaborating to develop statistical tools, as HYPERBASE. This program has been recently adapted to search the Greek texts (lexicon and morphosyntax). It is now possible to apply logometry concepts to Greek corpus. This paper aims to test these methods on Euripides’ Medea. It helps to show how to study discourses’ characterisation of the characters’ play and to answer to the following questions: Is Medea speaking in a female way? Which is the role of the nurse? What is the Jason’s responsibility in the drama? [less ▲]

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See detailLe mode de gestion du service de l’eau d’irrigation : Un déterminant de l’efficacité technique des exploitations agrumicoles du périmètre de Souss-Massa au Maroc
Maatala, Nassreddine ULiege; Lebailly, Philippe ULiege

Conference (2017, December 14)

La région du Souss-Massa, connue par la culture agrumicole à haute valeur ajoutée, est confrontée au problème de mobilisation des ressources en eau. Depuis le début de l’année 2000, la nappe du ... [more ▼]

La région du Souss-Massa, connue par la culture agrumicole à haute valeur ajoutée, est confrontée au problème de mobilisation des ressources en eau. Depuis le début de l’année 2000, la nappe du périmètre de la région a atteint la limite de son potentiel renouvelable Cette situation a incité le gouvernement marocain à réaliser un projet de sauvegarde du périmètre El Guerdane situé dans cette région. Ce projet, lancé en 2005, a été réalisé dans le cadre du Partenariat Public-Privé avec un partenaire en charge de la conception et la construction et qui veille à l’exploitation et à la maintenance depuis la mise en eau en 2009. Pour le périmètre d’Issen, situé dans la même région, les agriculteurs souffrent du même problème de mobilisation des ressources en eau et il est toujours géré par l’Office Régional de Mise en Valeur Agricole du Souss-Massa (ORMVASM). L’objectif de cet article est d’étudier l’effet du mode de gestion du service de l’eau d’irrigation (Partenariat public-privé et gestion publique) sur l’efficacité technique des exploitations agrumicoles dans les deux périmètres. L’estimation de la frontière de production et les scores de l’efficacité technique a été réalisée à partir des données collectées sur le terrain d’un échantillon de 121 exploitations agrumicoles situées dans les deux périmètres. La variabilité de ces scores d’efficacité technique est déterminée par plusieurs facteurs notamment la participation au Programme de Partenariat Public-Privé (PPP) et l’adhésion à des coopératives agricoles. L’estimation de la frontière de production et les scores de l’efficacité technique ont été effectués par le logiciel FRONTIER 4.1, l’analyse de l’efficacité a été réalisée à l’aide du logiciel GRETL en utilisant un modèle Tobit. [less ▲]

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See detailDiagnostic de la maladie de Lyme.
Pitel, Pierre Hugues; Hary, Claudine; Amory, Hélène ULiege et al

Conference (2017, December 14)

Le diagnostic de certitude de la maladie Borreliose de Lyme est éminemment complexe. La seule efficacité thérapeutique n’étant pas une preuve absolue, seule un faisceau de concordance et la réalisation ... [more ▼]

Le diagnostic de certitude de la maladie Borreliose de Lyme est éminemment complexe. La seule efficacité thérapeutique n’étant pas une preuve absolue, seule un faisceau de concordance et la réalisation d’études terrain pourront nous aider à essayer de débroussailler ce qui est encore chez le cheval une nébuleuse sujette à de nombreuses croyances et controverses. Certaines de ces études françaises et belges seront exposées lors de la présentation orale. [less ▲]

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See detailThe concept of frailty in patients on dialysis
DELANAYE, Pierre ULiege

Scientific conference (2017, December 14)

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See detailMatériaux, métiers et techniques. Vers une histoire matérielle du chantier de restauration (1830-1914): Introduction au colloque
Houbart, Claudine ULiege; Piavaux, Mathieu; Timbert, Arnaud

Conference (2017, December 14)

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See detailObservation and simulation of ethane (C2H6) at 23 FTIR sites
Mahieu, Emmanuel ULiege; Franco, B; Pozzer, A et al

Poster (2017, December 13)

Ethane is the most abundant non-methane hydrocarbon (NMHC) in the Earth atmosphere. Its main sources are of anthropogenic origin, with globally 62% from leakage during production and transport of natural ... [more ▼]

Ethane is the most abundant non-methane hydrocarbon (NMHC) in the Earth atmosphere. Its main sources are of anthropogenic origin, with globally 62% from leakage during production and transport of natural gas, 20% from biofuel combustion and 18% from biomass burning. In the Southern hemisphere, anthropogenic emissions are lower which makes biomass burning emissions a more significant source. The main removal process is oxidation by the hydroxyl radical (OH), leading to a mean atmospheric lifetime of 2 months. Until recently, a prolonged decrease of its abundance has been documented, at rates of -1 to -2.7%/yr, with global emissions dropping from 14 to 11 Tg/yr over 1984-2010 owing to successful measures reducing fugitive emissions from its fossil fuel sources. However, subsequent investigations have reported on an upturn in the ethane trend, characterized by a sharp rise from about 2009 onwards. The ethane increase is attributed to the oil and natural gas production boom in North America, although significant changes in OH could also be at play.In the present contribution, we report the trend of ethane at 23 ground-based Fourier Transform Infrared (FTIR) sites spanning the 80ºN to 79ºS latitude range. Over 2010-2015, a significant ethane rise of 3-5%/yr is determined for most sites in the Northern Hemisphere, while for the Southern hemisphere the rates of changes are not significant at the 2-sigma uncertainty level. Dedicated model simulations by EMAC (ECHAM5/MESSy Atmospheric Chemistry; ~1.8×1.8 degrees) implementing various emission scenarios are included in order to support data interpretation. The usual underestimation of the NMHCs emissions in the main inventories is confirmed here for RCP85 (Representative Concentration Pathway Database v8.5). Scaling them by 1.5 is needed to capture the background levels of atmospheric ethane. Moreover, additional and significant emissions (~7 Tg over 2009-2015) are needed to capture the ethane rise in the Northern hemisphere. Attributing them to the oil and gas sector and locating them in North America allows EMAC to produce adequate trends in the Northern hemisphere, but not in the Southern hemisphere, where they are overestimated. Possible causes for this difference are discussed. [less ▲]

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See detailProviding MOOCs: A FUN way to enroll students?
Jacqmin, Julien ULiege

Conference (2017, December 13)

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See detailLight and oxygen induce chain scission of conjugated polymers in solution
Caubergh, Stéphane ULiege; Louis, Boris; Larsson, Per-Olof et al

in Physical Chemistry Chemical Physics [=PCCP] (2017)

Conjugated polymers have been widely studied as flexible, versatile semiconductors in organic electronics. However, the material stability is one of the problems limiting their applications. Thus ... [more ▼]

Conjugated polymers have been widely studied as flexible, versatile semiconductors in organic electronics. However, the material stability is one of the problems limiting their applications. Thus, understanding the degradation process of conjugated polymers is crucial. In this work, we monitored the chain scission of the model polymer MEH-PPV in solutions under different conditions by assessing its molecular weight using Gel permeation chromatography and optical spectral measurements. We showed that changes in the UV-VIS spectrum can be seen only when the degradation has already progressed substantially. Fluorescence spectrum was found to be almost totally insensitive to the degradation stage of the polymers. We demonstrate that chain scission in solutions happens even in the dark leading to a decrease of about 15% of the molecular weight after just one day of storage. If exposed to room-light, the chain length decreases about 10 times over one day of exposure. Using stronger light intensity or enriching the solution with oxygen accelerates the degradation process dramatically. The rate of the reaction follows approximately a square root dependence with light intensity and oxygen concentration. We conclude that some extent of polymer degradation is difficult to avoid in common laboratory practices since to prevent it one needs to work in oxygen free atmosphere in the dark. Preparation of polymer films from partially degraded solutions might lead not only to losing the connection between the molecular weight and the opto-electronic properties but also to unintentional doping of the semiconductor by products of chains scission reactions. [less ▲]

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See detailBovine brucellosis in Argentina: current situation and intraherd simulation model
Aznar, Maria Natalia ULiege

Doctoral thesis (2017)

Bovine brucellosis is an infectious disease, which can negatively affect cattle productivity and human health. It is endemic in Argentina, where 0.8% of cattle and 12% of farms are infected, having this ... [more ▼]

Bovine brucellosis is an infectious disease, which can negatively affect cattle productivity and human health. It is endemic in Argentina, where 0.8% of cattle and 12% of farms are infected, having this percentages remained stable throughout the years. This thesis studies the disease in the country. At first a review on the Argentine situation is presented, which leads to two remarkable aspects: brucellosis remains endemic and it is not possible to reach its eradication. In order to to clarify those points, four main studies were performed. The study 1 is an analysis of cattle movement that showed that there are some districts potential spreaders of the disease while others have more at risk of introduction. The study 2 constitutes an estimation of the brucellosis prevalence and identification of the risk factors associated with an increased occurrence, which helps to improve the knowledge of the epidemiology of the disease in the country. When assessing the situation at the provinces under study, a spatial cluster of infected farms was detected. In that region, farms are considerably large, having lowanimal densities and few movements. Those factors probably correlate with infrequent veterinary control and poor sanitary conditions of the herds. Special attention should be paid to those zones sharing these characteristics since there is high chance of finding clusters of the disease. In the study 3 a method for evaluating some farmers' and veterinarians' management practices in relation to brucellosis and for assessing the vaccination campaign and coverage is developed. It shows that the vaccination campaign is globally well implemented, but the immunization coverage and some management practices should be improved. Finally, the study 4 develops an intra herd simulation model. Its aim is to predict the effects of the disease and to test different control and eradication strategies in different situations. As brucellosis is a contagious disease, when introducing one infected animal in a free herd, it might become endemic. In the case of endemic farms that do not eliminate the reactors, all the tested vaccination strategies produce a reduction in the disease outputs (abortions, infectious deliveries, new infected and born infected) whereas when no vaccination is applied, the outputs remain stable. The isolation of heifers from the general herd reduces the disease outputs by a half. Despite it, if the reactors are not eliminated the sources of infection are kept in the herd. Therefore, a strategy of elimination of infected animals has to be applied. Independently from the chosen vaccination strategy, applying serological tests of high sensitivity and specificity with immediate elimination of reactors produces a dramatic reduction in the disease prevalence. These results might explain the fact that the disease keeps on being endemic in Argentina. Since for achieving eradication at country level, other measures additional to vaccination have to be applied, the mandatory elimination of infected cattle could be taken into account. Summarizing all these issues, it can be concluded that, although there are good regulations to control and eradicate bovine brucellosis in Argentina. The prevalence is not so high and stable throughout the years and, some improvements have to be made in order to achieve eradication. This thesis attempted to assess the Argentine current situation and to provide tools for policy makers and farmers to obtain that goal.   [less ▲]

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See detailRecovery of unlawful tax advantages remains a thorny EU State aid law issue
Van Cleynenbreugel, Pieter ULiege

E-print/Working paper (2017)

A blogpost on State aid and tax rulings, as a contribution to the Regulating for Globalization blog

Detailed reference viewed: 7 (7 ULiège)
See detailPoliticizing Europe: Normative Conditionality in the EU Institutions’ Interpretations of Europe(-anness)
Niessen, Annie ULiege

Conference (2017, December 12)

“Europe” and “Europeanness” have always been key notions in the construction process of the European Union (EU). Indeed, Article 49 of the Treaty on the European Union enshrines as primary condition that ... [more ▼]

“Europe” and “Europeanness” have always been key notions in the construction process of the European Union (EU). Indeed, Article 49 of the Treaty on the European Union enshrines as primary condition that a State must be “European” to be eligible for EU membership. However, there is neither a consensual nor an official definition of this term which can take on various meanings, broadly ranging from geographical to cultural ones. This polysemy has driven the EU institutions to provide their own interpretations, especially within the framework of enlargements and membership applications. Building on an analysis of institutional documents, the paper investigates how the notions of “Europe” and “Europeanness” have been interpreted since the inception of the EU and, in fine, politicized through the implementation of normative conditions. This analysis eventually led to a new, up-to-date model of the conditions that a State has to meet to be considered “European”, which further highlights the institutional conceptualization of Europe(-anness). [less ▲]

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See detailRecent evolution of the coastline in the Gulf of Guinea. Example of Togo and Benin (2000-2016)
Ozer, Pierre ULiege; Hountondji, Yvon-Carmen; De Longueville, Florence

Conference (2017, December 11)

The land-sea interface is an extremely fragile environment. On a global scale, coastlines are threatened by a multitude of factors sometimes natural and mostly anthropogenic. Thus, in addition to the ... [more ▼]

The land-sea interface is an extremely fragile environment. On a global scale, coastlines are threatened by a multitude of factors sometimes natural and mostly anthropogenic. Thus, in addition to the disruptions to coastal areas by port facilities, dams, sediment sampling on the beach or urban sprawl, there are the consequences of climate change, including rising sea levels. Studies conducted in West Africa show important shoreline erosion processes in recent years with many socio-economic consequences. [...] [less ▲]

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See detailVulnérabilité sanitaire et environnementale dans les quartiers inondables de la commune de Cap-Haïtien, Haïti
Bilomba Ngandu, Pontien; Von Frenckell, Marianne ULiege; Ozer, Pierre ULiege

Conference (2017, December 11)

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See detailVulnérabilité aux inondations dans le contexte des changements climatiques à New-Bell Ngangue, un quartier planifié de la ville de Douala, Cameroun
Amanejieu, Amélie; Feumba, Rodrigue Aimé; Ngoufo, Roger et al

Conference (2017, December 11)

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See detailContribution des Systèmes d’Information Géographique pour la cartographie des zones à risques d’inondation à Yaoundé
Zogning Moffo, Maurice Olivier; Ozer, Pierre ULiege; Dewals, Benjamin ULiege

Conference (2017, December 11)

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See detailExposition et vulnérabilité face aux risques d’inondation au Burkina Faso : Cas de la ville de Dori
Tomety, Yaovi Djivénou; Dewals, Benjamin ULiege; Ozer, Pierre ULiege

Conference (2017, December 11)

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See detailVulnérabilité et adaptation des communautés lacustres aux inondations à Sô-Ava dans la basse vallée de l’Ouémé, Bénin
Lokossou, Martin Augustin; De Longueville, Florence; Ozer, Pierre ULiege

Conference (2017, December 11)

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See detail« Cap-Haïtien » or « How to ‘construct’ a flood risk in a decade »
Gracius, Gracia Joseph; Ozer, Pierre ULiege

Conference (2017, December 11)

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