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See detailLa spatialité de la gouvernance des régions urbaines intermédiaires en Europe
Breuer, Christophe ULiege

Doctoral thesis (2017)

The governance of urban regions is a central research topic of urban sciences, and a major challenge for urban actors. In this research, we contribute to the analysis of governance processes by studying ... [more ▼]

The governance of urban regions is a central research topic of urban sciences, and a major challenge for urban actors. In this research, we contribute to the analysis of governance processes by studying the transformation of its spatiality in intermediate European urban regions. Our research postulates the intrinsically spatial nature of urban governance, and is based on three hypotheses: (1) the territorial characteristics of urban regions relate to local politico-administrative fragmentation, (2) the characteristics of politico-administrative fragmentation relate to the construction of a governance scale for urban regions, and (3) governance structures at the level of urban regions relate to territorial characteristics. In order to test these hypotheses, we conducted a research in three complementary parts. The first part is devolted to the state of the art on governance, territorial rescaling and institutional change. The second part analyses quantitatively the politico-administrative fragmentation of 123 intermediate European urban regions, and its links with territorial indicators. The third part analyses qualitatively the processes of transformation of spatial governance in the urban regions of Saint-Étienne (France), Metz (France), Sheffield (United Kingdom) and Liège (Belgium). This complementary research confirms the existence of links between the different aspects of spatiality in the governance of intermediate urban regions in Europe, and concludes that the recomposition processes are intrinsically spatial, territorial and multiscalar. [less ▲]

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See detailContribution à l'enseignement de la traduction au Niger : le renforcement du français langue cible dans la formation des futurs traducteurs.
Amadou Gazali, Alkassoum ULiege

Doctoral thesis (2017)

Teaching translation is a very old activity. While it often used to be performed in the context of language learning, it has changed fundamentally over the past few decades, i.e. since the ... [more ▼]

Teaching translation is a very old activity. While it often used to be performed in the context of language learning, it has changed fundamentally over the past few decades, i.e. since the institutionalization of translation as an autonomous scientific discipline with specific objects and methods. Now, it covers not only linguistics but also other fields including the operating aspect of knowledge and has undergone more methodological transformations over half a century than it did since the Middle-Age, or even since Cicero. In Niger, however, the situation has not yet changed. Teaching translation has remained part of language learning. In this context, the learners’ translation competence is directly associated to linguistic competence. But the latter is far from satisfactory for quite a lot of Niger students, whatever their field of study. In fact, several studies confirmed the poor performance of Niger students in relation to mastery of their working language, French. Indeed, despite its exclusive status as the language of administration and education, French is not mastered enough to be used as a basis for the learning of another language and even less for translation purposes. This is why this study is based on the hypothesis according to which improving the target language in translator training would largely contribute to upgrade their translation competence. It therefore aims to enhance Niger prospective translators’ translation competence by improving their knowledge of the working language. To this end, an experimental research method is used that relies on a classical type scheme involving pre- and post-experimentation observations. An experimental treatment is applied between the two observation stages, which consists of language remedial courses. The verification of the hypothesis depends on operational aspects of the study as well as on the results yielded by the interpreting of collected data. [less ▲]

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See detailSensitivity of the Antarctic surface mass balance to oceanic perturbations
Kittel, Christoph ULiege; Amory, Charles ULiege; Agosta, Cécile ULiege et al

Poster (2017, December 15)

Regional climate models (RCMs) are suitable numerical tools to study the surface mass balance (SMB) of the wide polar ice sheets due to their high spatial resolution and polar-adapted physics. Nonetheless ... [more ▼]

Regional climate models (RCMs) are suitable numerical tools to study the surface mass balance (SMB) of the wide polar ice sheets due to their high spatial resolution and polar-adapted physics. Nonetheless, RCMs are driven at their boundaries and over the ocean by reanalysis or global climate model (GCM) products and are thus influenced by potential biases in these large-scale fields. These biases can be significant for both the atmosphere and the sea surface conditions (i.e. sea ice concentration and sea surface temperature). With the RCM MAR, a set of sensitivity experiments has been realized to assess the direct response of the SMB of the Antarctic ice sheet to oceanic perturbations. MAR is forced by ERA-Interim and anomalies based on mean GCM biases are introduced in sea surface conditions. Results show significant increases (decreases) of liquid and solid precipitation due to biases related to warm (cold) oceans. As precipitation is mainly caused by low-pressure systems that intrude into the continent and do not penetrate far inland, coastal areas are more sensitive than inland regions. Furthermore, warm ocean representative biases lead to anomalies as large as anomalies simulated by other RCMs or GCMs for the end of the 21st century. [less ▲]

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Peer Reviewed
See detailLe tout (n’)égale (pas) la somme des parties : Lecture phénoménologique d’une hypothèse systémique
Englebert, Jérôme ULiege; Follet, Valérie

Conference (2017, December 15)

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Peer Reviewed
See detailÉvaluation des anomalies de l’expérience du monde : apports de l’échelle EAWE à l’étude de l’intersubjectivité schizophrénique
Mossay, Françoise; Valentiny, Caroline; Englebert, Jérôme ULiege

Conference (2017, December 15)

Detailed reference viewed: 24 (3 ULiège)
See detailFive years of harvest with the vortex coronagraph
Absil, Olivier ULiege

Scientific conference (2017, December 15)

While the concept of vortex coronagraphy dates back to 2005, the first science-grade Annular Groove Phase Masks (AGPM), working in the thermal infrared regime, have been installed at the VLT only in 2012 ... [more ▼]

While the concept of vortex coronagraphy dates back to 2005, the first science-grade Annular Groove Phase Masks (AGPM), working in the thermal infrared regime, have been installed at the VLT only in 2012. They are now also equipping the Keck telescope and the Large Binocular Telescope, and will soon be at the core of more ground-based high-contrast imaging instruments. In this seminar, I will shortly review the technology development undertaken over the last 10 years, and describe the on-sky operations and performance of the vortex coronagraph. I will then present the main scientific results obtained since 2012, and explain how we have recently adapted deep learning techniques to the problem of post-processing in high-contrast imaging. I will finally discuss the perspectives with new instruments, including the Breakthrough Watch project. [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 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 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 detailIntroduction du colloque international « Psychopathologie phénoménologique : Dépassement et ouverture »
Englebert, Jérôme ULiege; Adam, Christophe

Conference (2017, December 13)

Detailed reference viewed: 27 (6 ULiège)
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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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Peer Reviewed
See detailVersatile Catalyst Materials Fabrication by Low-Pressure Plasma Treatments
Busby, Yan; da Silva Pires, Mathieu; Haye., Emile et al

Conference (2017, December 12)

Detailed reference viewed: 43 (2 ULiège)
See detailDiscussant The institutional functioning of the European Central Bank
Van Cleynenbreugel, Pieter ULiege

Scientific conference (2017, December 12)

Detailed reference viewed: 15 (1 ULiège)
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See detailDiscovering Routers in Load-balanced Paths
Grailet, Jean-François ULiege; Donnet, Benoît ULiege

in 13th International Conference on emerging Networking EXperiments and Technologies Student Workshop (2017, December 12)

Usually, a set of Traceroute measurements collected for a large amount of target IPs contain one or several route hops at which the IP interfaces vary from one measurement to another. These variations ... [more ▼]

Usually, a set of Traceroute measurements collected for a large amount of target IPs contain one or several route hops at which the IP interfaces vary from one measurement to another. These variations occur even if several measurements share the same length and the same last hops. This is likely a consequence of load balancing, a traffic engineering policy which aims at sharing the load to ensure quality of service. In this paper, we consider the problem of conducting alias resolution on IP interfaces discovered via Traceroute and which are involved in load balancing. By conducting alias resolution in such a context, we want to verify if the IP interfaces involved in load balancing belong to unique routers, and more broadly, how relevant is alias resolution in this context. To do so, we use a slightly edited version of TreeNET, a topology discovery tool which relies on a tree-like structure based on Traceroute measurements to map a target domain. The upgraded TreeNET along the measurements described in this paper are both freely available online. [less ▲]

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See detailAn Observation-Based Middlebox Policy Taxonomy
Edeline, Korian ULiege; Donnet, Benoît ULiege

in 13th International Conference on emerging Networking EXperiments and Technologies Student Workshop (2017, December 12)

Recent years have seen the rise of middleboxes, such as NATs, firewalls, or TCP accelerators. Those middleboxes play an important role in today's Internet, including enterprise networks and cellular ... [more ▼]

Recent years have seen the rise of middleboxes, such as NATs, firewalls, or TCP accelerators. Those middleboxes play an important role in today's Internet, including enterprise networks and cellular networks. However, despite their undisputable success in modern network architecture, their actual impact on packets, traffic, and network performance is not that much understood. In this paper, we propose a path impairment oriented middlebox classification that aims at categorizing the initial purpose of a middlebox policy as well as its potential complications. [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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Peer Reviewed
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

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See detailRole for PARs and thrombin-GPIbα interaction in thrombin induced procoagulant platelet formation
Bourcy, Morgane ULiege; Wang, Samuel; Pasalic, Leonardo et al

Poster (2017, December 11)

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See detailLa construction d'un futur sur quatre roues. Une ethnographie du handicap locomoteur dans Mitchell's Plain (Afrique du Sud)
Schnitzler, Marie ULiege

Doctoral thesis (2017)

This thesis explores subjectivities shaped by locomotive disability in the post-apartheid city through an ethnography of ordinary life. Locomotive disability encompasses every limitation of mobility due ... [more ▼]

This thesis explores subjectivities shaped by locomotive disability in the post-apartheid city through an ethnography of ordinary life. Locomotive disability encompasses every limitation of mobility due to an infirmity of the lower limbs. In my discussion, it is conceived as a ‘test’ (épreuve), namely an event that interrupts everyday routines and creates tensions between the responsibilities of different actors’ – people with disabilities, families, the state, etc. These tensions are articulated on various levels. In my discussion, I focus on three of them: the political field that determines a certain type of citizenship, the social networks that constitute the person, and finally the understanding people with disabilities have of their personal history. These levels combine to shape people’s subjectivity, and are analysed in a Foucauldian perspective not just as individuals’ relations with themselves, but also with others and the wider world. [less ▲]

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