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See detailL'identité, la maladie et la dynamique du temps à l'adolescence
Gauthier, Jean-Marie ULiege

Conference (2013, October 12)

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See detailBovine noroviruses in Belgium: from a molecular and evolutionary perspective
Mauroy, Axel ULiege; Scipioni, A.; Daube, Georges ULiege et al

Conference (2013, October 11)

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See detailHow many scribes worked on the Egyptian Recension of the Thousand and One Nights?...
Franssen, Elise ULiege

Conference (2013, October 11)

Detailed reference viewed: 36 (1 ULiège)
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See detailAutograph/Holograph and Authorial Manuscripts: Concluding Remarks
Bauden, Frédéric ULiege; Franssen, Elise ULiege

Conference (2013, October 11)

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See detailAnalyse de l'efficience des traitements de mammites de 50 fermes de Wallonie dans la base LAECEA
Theron, Léonard ULiege; Reding, Edouard; Detilleux, Johann ULiege et al

Conference (2013, October 11)

Mastitis is the most “antibiotic consuming” pathology in dairy medicine. Though antibiotics and antibiograms are known to vets since the early fifties, our practices did not evolved a lot from empiric ... [more ▼]

Mastitis is the most “antibiotic consuming” pathology in dairy medicine. Though antibiotics and antibiograms are known to vets since the early fifties, our practices did not evolved a lot from empiric antibiotic therapy. Indeed, the need for a treatment, the cost and the delay for an antibiogram are most of the time incoherent with a routine practice. Nevertheless, there is a surge for rational use of antibiotics. Our study was based on 1100 mastitis events from 30 Belgian farms collected between January 2011 and June 2012. We chose to compare tissular cure (TC) based on the threshold of 200.000 somatic cells/ml in milk at milk control at least 60 days after the clinical mastitis event. Regarding the mastitis event, severity (according 3 grades: alteration of milk as grade 1, alteration of quarter as grade 2 and alteration of general state as grade 3), quarter, treatments were recorded. We also assessed a chronicity status based on previous somatic cell count (SCC) of the cow. It was considered a new case a cow which at least 15 days before had an SCC <200.000 cells/ml, other were marked as chronic cases. In our distribution, we see a seasonal rise of incidence between January and May. This period would represent twice as many mastitis as the summer period. Overall TC reaches 46% of all mastitis events, which is quite poor. Rear quarters had significantly lower TC (p<0,05%). Grade 3 mastitis had lower TC, 42,6% (p<0.05%) versus 48,9 % for grade 2 and 44,2% for grade 1. Almost 49% of all mastitis was considered as chronic cases, which TC was 33% on average, whereas new cases reached 55,3% TC. Study of treatment was frustrating given the high number of different combinations of treatments. It was underlined that 4th generation cephalosporins (C4G) were the most used in our cohort, followed by aminopenicillin/methicillin association (PENA/PENM) and 1st generation cephalosporins/aminoglycosids (C1G/AG) association. Of these intramammary treatments, 20% of the cases were submitted to a second intramammary drug, mostly C1G or C1G/AG. One third of the cases were treated parenterally with antimicrobials, mostly macrolids, fluoroquinolones and penethacillin. Finally, 10% of mastitis was treated with anti-inflammatory drugs, mostly tolfenamic acid and flunixin-meglumin. Comparing mastitis without use of a secondary intramammary drug, only PENA and C1G/AG reached more than 60% TC. Considering new cases, then C1G/AG, PENA/PENM and Prednisolone containing specialties were above 60% TC. Use of a parenteral injections increased TC only on new cases (+12%), but not on chronic cases. Refining by severity, TC improved with a parenteral on new cases, mainly in grade 1 (+20%). Regarding associated factors, TC was negatively affected by chronicity, parity and lactation stage. Indeed, TC was lower on cases from more than 4 month in milk, third lactation (OR = 2.8 for no cure) compared with previous, and chronic cases (OR=2,6). Seemingly, chronicity was positively associated with parity and season. The 3rd parity cases had higher chances to be chronic ones (OR = 1,7), as well as cases from April to September (OR = 1,6). This evaluation of cure is rather simple and has a good variability which allows several questions about the real match between antimicrobial treatment for mastitis and the udder inflammation. Based on our epidemiological data, we can modify routine management of mastitis, as some cases might not worth the antimicrobial treatment. [less ▲]

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See detailTechnology Assessment and neoliberal policies as dancing partners : critical insights in the new spirit of Technology Assessment
Delvenne, Pierre ULiege

Conference (2013, October 11)

In this paper we explore the tension surrounding two interrelated sets of science, technology and innovation (STI) policies that evolved together in Europe since the 1980s onward. On the one hand, we ... [more ▼]

In this paper we explore the tension surrounding two interrelated sets of science, technology and innovation (STI) policies that evolved together in Europe since the 1980s onward. On the one hand, we focus on the expanding process of neoliberal policies unconditionally supporting STI as strategic resources to generate growth and competitiveness. On the other hand, we link this process with policy decisions to institutionalize Technology Assessment processes and activities to frame and anticipate the potential side effects of STI in newly emerging strategic science regimes. TA and neoliberal STI policies coevolved as “dancing partners” (Rip 1992), relatively independent and closely interacting at the same time. We inquire into the experimental, transforming character of Technology Assessment (TA) by linking its emergence and development to the broader institutional setting of which it is a part. Our analysis brings a macro-sociological and political sensitivity to bear on TA. Rather than conceiving of TA as a mere management tool or governance technique, we suggest that TA processes enact, as well as counteract, dominant innovation policies. Conversely, we look at recent TA de-institutionalization processes in Flanders and Denmark to offer some reflections on the future of TA. Based on our previous researches and on participatory observation in a European FP7 project aimed at expanding TA institutions in Europe, we question TA’s ability to exert its critical capacities if it is to survive only as an instrument aligned with recent policy discourses, such as responsible research and innovation, that emerged in the aftermath of Lisbon’s strategy. [less ▲]

Detailed reference viewed: 27 (2 ULiège)
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See detailAsymptotic standard errors of robust estimators of ability in dichotomous item response models
Magis, David ULiege

Conference (2013, October 10)

In item response theory, the classical estimators of ability are highly sensitive to response disturbances and can return strongly biased estimates of the true underlying ability level. Robust methods ... [more ▼]

In item response theory, the classical estimators of ability are highly sensitive to response disturbances and can return strongly biased estimates of the true underlying ability level. Robust methods were introduced to lessen the impact of such aberrant responses onto the estimation process. The computation of asymptotic (i.e., large sample) standard errors (ASE) for these robust estimators, however, has not been fully considered yet. This paper focuses on a broad class of robust ability estimators, de ned by an appropriate selection of the weight function and the residual measure, for which the ASE is derived from the theory of estimating equations. The maximum likelihood (ML) and the robust estimators, together with their estimated ASE, are then compared through a simulation study. It is concluded that both the estimators and their ASE perform similarly in absence of response disturbances, while the robust estimator and its estimated ASE are less biased and outperform their ML counterparts in presence of response disturbances with large impact on the item response process. [less ▲]

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See detailAutograph/Holograph and Authorial Manuscripts: A General Introduction
Bauden, Frédéric ULiege; Franssen, Elise ULiege

Conference (2013, October 10)

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See detailThe Code of conduct on invasive alien plants in Belgium: results after two years of communication with the horticultural sector
Halford, Mathieu ULiege; Branquart, Etienne; Vanderhoeven, Sonia et al

Conference (2013, October 10)

In Belgium there are around 60 plant species listed as invasive (http://ias.biodiversity.be). Most of them were introduced as ornamentals. Except a few plants that have become famous invaders throughout ... [more ▼]

In Belgium there are around 60 plant species listed as invasive (http://ias.biodiversity.be). Most of them were introduced as ornamentals. Except a few plants that have become famous invaders throughout the country, the invasiveness of these ornamentals remains unknown outside the scientific audience. Due to this lack of information, the major part is still available in nurseries. In order to reduce the introductions of these plants, a Code of conduct was launched in September 2011 within the frame of the AlterIAS project (ALTERnatives to Invasive Alien Species), an ‘Information & Communication’ Life project dedicated to invasive plants and prevention in the green sector (www.alterias.be). The Code was elaborated in consultation with horticulture professionals, scientists and representatives of administrations. Five measures were approved: (1) know the list of invasive plants in Belgium; (2) stop the trade and the plantation of some invasive plants; (3) disseminate information on invasive plants; (4) promote the use of non invasive alternative plants and (5) participate in early detection of new invaders. Restrictions of use target a list of 28 species negotiated with the sector. An awareness campaign entitled “Plant different” is on progress to promote the Code among professionals and gardeners. Different communication tools are used. Social surveys were realized to assess the tools most efficient and the subsequent change of attitudes. But raising awareness on invasive plants is difficult due to different public perception. Communication should be focused on positive messages. Negative communication with alarming terms or military metaphors re-enforces the feeling of being guilty instead of encouraging concrete solutions. Thanks to constant efforts in communication, this ‘environmentally safe’ charter is attracting new partners over time. But changing people’s attitude is a long term process. The Code of conduct will require more time than two years to be widely adopted by the horticultural sector in Belgium. [less ▲]

Detailed reference viewed: 52 (3 ULiège)
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See detailIndustrial hazards and social factors: a question of vulnerability
Rossignol, Nicolas ULiege; Turcanu, Catrinel

Conference (2013, October 09)

In order to analyze and try to mitigate the potential consequences of a hazard threatening a complex socio-technical system, the risk analysis framework is classically used. Many risk analysis models ... [more ▼]

In order to analyze and try to mitigate the potential consequences of a hazard threatening a complex socio-technical system, the risk analysis framework is classically used. Many risk analysis models recognize now widely the importance of integrating social aspects into the analysis. Another way to deal with potential consequences of hazards is to analyze the vulnerability of the system considered. This paradigm overcomes the shortcomings of risk analysis in situations when the knowledge about the probabilities and the outcomes is incomplete or insufficient. Studies in the literature considering natural hazards show that socio-economic factors are integrated more often and in a natural way in vulnerability analysis models. Nevertheless, it seems that such considerations are missing into models aiming at evaluating the vulnerability to an industrial hazard, especially at a very local level where the technical aspects seem to be predominant. What can we learn from the analysis of the models addressing vulnerability to natural hazards in terms of the integration of social factors? To answer this question, we realized a systematic literature review from scientific journal papers on vulnerability analysis published in the last two decades. We synthesize this review and we propose an integrated vulnerability analysis model; in order to test this model we use as a case-study the incident reports collected in a nuclear facility in Belgium. This confrontation allows us to highlight important factors to be taken into account for a vulnerability analysis conducted in such a context. [less ▲]

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See detailCitizens in the Wasteland: the Trouble with Radioactive Waste Management in Belgium
Parotte, Céline ULiege

Conference (2013, October 09)

In Belgium, the long-term management of radioactive waste falls under the exclusive competence of the Belgian federal Agency for Radioactive Waste and Enriched Fissile Materials (ONDRAF). Contrary to the ... [more ▼]

In Belgium, the long-term management of radioactive waste falls under the exclusive competence of the Belgian federal Agency for Radioactive Waste and Enriched Fissile Materials (ONDRAF). Contrary to the existing situation for low-level waste, no institutional policy has yet been formally approved for the long-term management of long-lived and high level waste. In this context, ONDRAF considers the public and stakeholders’ participation and engagement as essential in the formulation of an effective and legitimate policy. This is why, over the past few years, it has decided to engage them in different ways (public dialogues, interdisciplinary conference, consensus conference, legal public consultation) to elaborate the “Waste Plan”, an ONDRAF-document containing guidelines to make a principled policy decision about nuclear waste management. To achieve “successful” public participation exercises, social scientists have been regularly mobilized either as external evaluators, follow-up committee members, or participative observers. Our previous research on such public participation processes showed that little had been said as to how stakeholders and the “public” have been mobilized by the Belgian Agency during the elaboration of the Waste Plan. How has the wider public opinion been integrated in the Waste Plan so far? To what extent could public participation and engagement redefine the internal debate within ONDRAF on the relevance and usefulness of such exercises for the long-term management of long-lived and high level waste? Based on official document analysis, semi-structured interviews and participatory observation, this paper explores how ONDRAF actually assesses the quality of public/stakeholders participation and how it makes use of it in its communication and management strategies. [less ▲]

Detailed reference viewed: 45 (4 ULiège)
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See detailTrees communities and filters to restoration along a periurban gradient of tropical forest degradation
Hick, Aurélie ULiege; Tooth, Martin; Tshibungu, Alain et al

Conference (2013, October 09)

Detailed reference viewed: 49 (6 ULiège)
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See detailNon-constant wall thickness scroll expander investigation for a micro-solar ORC plant
Dickes, Rémi ULiege; Orosz, Matthew; Hemond, Harold

Conference (2013, October 08)

Detailed reference viewed: 39 (9 ULiège)
See detailAutoficción y paratopía en la obra de Javier Cercas
Taormina, Alizé ULiege

Conference (2013, October 08)

En esta comunicación, proponemos reflexionar sobre la autoficción hispánica desde la perspectiva de un concepto que resulta del análisis del discurso, la paratopía creadora. Mostraremos así, a través del ... [more ▼]

En esta comunicación, proponemos reflexionar sobre la autoficción hispánica desde la perspectiva de un concepto que resulta del análisis del discurso, la paratopía creadora. Mostraremos así, a través del caso del escritor español Javier Cercas, en qué medida el género autoficcional puede funcionar como un mecanismo de legitimación para el escritor contemporáneo, cuya figura, en la sociedad actual, tiende a hacerse cada vez más pequeña y banal (Alberca 2007: 24). Según Dominique Maingueneau, una de las características del discurso literario es ser paratópico, es decir, se enuncia desde un lugar paradójico basado en una doble imposibilidad: la de cerrarse sobre sí mismo, y la de confundirse con la sociedad ordinaria. Por consiguiente, el enunciador de un discurso literario no se puede colocar ni dentro, ni fuera de la sociedad: “il est voué à nourrir son œuvre du caractère radicalement problématique de sa propre appartenance à cette société” (Maingueneau 2004: 52). Así la paratopía no sólo caracteriza la condición de la literatura, sino también la de todo creador, quien precisamente se convierte en creador si asume, de manera singular, la paratopía constitutiva del discurso literario. Para ejemplificar nuestra hipótesis, consideraremos las dos autoficciones de Javier Cercas: Soldados de Salamina (2001) y La velocidad de la luz (2005). Veremos que, en estos textos, Cercas se crea una condición de escritor paratópico que no tiene en la vida real: el dispositivo ambiguo de la autoficción, que mezcla los registros ficcional y factual, le permite manipular el referente real y reescribir ciertos episodios de su vida de manera que la hace paratópica. Así se presenta bajo los rasgos de un artista bohemio o un escritor maldito, dos figuras paratópicas por excelencia, pero también se aproxima a personajes –la pitonisa, el veterano de Vietnam– y lugares –la residencia de ancianos, el campus universitario– atrapados en una pertenencia imposible: pertenecen y no pertenecen a la sociedad ordinaria. De esta manera, demostraremos cómo Cercas se atribuye, mediante su alter ego ficcional, cierta legitimidad, al inscribirse en situaciones paratópicas que su vida de hombre “normal” no le da. [less ▲]

Detailed reference viewed: 292 (24 ULiège)
See detailQuand la pratique du terrain enrichit les cartes des sols existantes : l'expérience du PCNSW en Région Wallonne
Michel, Brieuc ULiege; Legrain, Xavier ULiege; Lejeune, Emilie et al

Conference (2013, October 08)

Detailed reference viewed: 17 (2 ULiège)
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See detailHow to increase species diversity in phytostabilization strategies near Lubumbashi (D.R.C.)
Boisson, Sylvain ULiege; Collignon, Julien ULiege; Le Stradic, Soizig ULiege et al

Conference (2013, October 08)

Copper contamination of soils represents a threat to natural areas and to human health. Phytostabilization, i.e using plants to immobilize contaminants, represents a well-known technology to hemper heavy ... [more ▼]

Copper contamination of soils represents a threat to natural areas and to human health. Phytostabilization, i.e using plants to immobilize contaminants, represents a well-known technology to hemper heavy metals spread across landscapes. In Katanga (Congo D.R.), Microchloa altera was recently identified as a candidate species to stabilize copper in soil. This grass naturally tolerates and accumulates high copper concentrations and belongs to the typical copper flora of Katanga. However more than 600 species compose this flora and other grasses may be used in phytostabilisation strategies. But little is known about the phenology reproductive strategy and demography of these species, which makes their use in current phytostabilization strategies difficult. The present study aims to characterize the reproduction capacity of seven other dominant grass species for future phytostabilisation tests. A total of 67 quadrats (1m²) were randomly placed across three sites. At two periods over the fruiting season, three inflorescences per species per quadrat were collected in order to estimate the number of spikes, spikelets and viable seeds. All species have sexual reproductive strategy and spikelets number presents little variation between populations. Three species are very common (Andropogon shirensis, Loudetia simplex and Eragrostis racemosa) and represent potential candidates to increase species diversity in phytostabilization strategies in Katanga. Further research, including germination tests and phytostabilization tests in situ, is planned in a near future. [less ▲]

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See detailTous créatifs! Art et Science 2.0: Les scientifiques et l'art
Andre, Marie ULiege; Leleux, Violaine ULiege; Bogaert, Jan ULiege

Conference (2013, October 08)

Detailed reference viewed: 35 (6 ULiège)
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See detailDe rol van de burgemeester tijdens het beheer van noodsituaties
Vincent, Jeffrey; Easton, Marleen; Dormaels, Arne et al

Conference (2013, October 08)

Detailed reference viewed: 30 (1 ULiège)
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See detailDesign, Modeling and Performance Optimisation of a Reversible HP-ORC Prototype
Quoilin, Sylvain ULiege; Dumont, Olivier ULiege; Lemort, Vincent ULiege

Conference (2013, October 08)

Building is one of the economical sectors where solutions are available to significantly reduce energy consumption and greenhouse gases emissions. Among other, heat pumps offer promising perspectives to ... [more ▼]

Building is one of the economical sectors where solutions are available to significantly reduce energy consumption and greenhouse gases emissions. Among other, heat pumps offer promising perspectives to provide energy-efficient space and sanitary hot water heating in many applications. 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 the so-called HP/ORC module. The same module can be used during winter as an efficient heat pump which radically reduces the complexity of the total system. The main advantage of the proposed technology is due to the reversibility of scroll machines, which have proven to operate efficiently both as compressor and as an expander in lab testing. [less ▲]

Detailed reference viewed: 136 (16 ULiège)
See detailNi théoriser les pratiques, ni pratiquer les théories – Une rencontre improbable
Delhalle, Nancy ULiege

Conference (2013, October 08)

Detailed reference viewed: 24 (4 ULiège)
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See detailRobust and Computationally Efficient Dynamic Simulation of ORC Systems: The ThermoCycle Modelica Library
Quoilin, Sylvain ULiege; Desideri, Adriano ULiege; Bell, Ian ULiege et al

Conference (2013, October 07)

The ThermoCycle library, an open-source library for dynamic modeling of ORC systems, has been recently developed in the Modelica language and is presented in this paper. Special attention has been paid to ... [more ▼]

The ThermoCycle library, an open-source library for dynamic modeling of ORC systems, has been recently developed in the Modelica language and is presented in this paper. Special attention has been paid to robustness and to simulation speed. Dynamic simulations are indeed often limited by numerical constraints and failures, either during initialization or during integration. Furthermore, the use of complex equations of state (EOS) to compute thermodynamic properties dramatically decreases the simulation speed. In this paper, the different numerical methods developed to overcome these limitations are presented and discussed and the proposed models are then benchmarked against alternative simulation tools. [less ▲]

Detailed reference viewed: 442 (18 ULiège)
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See detailExperimental study and dynamic modeling of a WHR ORC power system with screw expander
Desideri, Adriano ULiege; Van Den Broek, Martijn; Gusev, Sergei et al

Conference (2013, October 07)

In recent years, due to the increasing concern over energy shortage and global warming, the interest in low grade heat recovery from industrial processes has grown dramatically. Several studies have ... [more ▼]

In recent years, due to the increasing concern over energy shortage and global warming, the interest in low grade heat recovery from industrial processes has grown dramatically. Several studies have underlined the potential of small-capacity ORC power plants for waste heat recovery (WHR) applications. For such systems accurate dynamic modeling represents an important tool in particular when control issues are considered. This paper presents a dynamic model of an ORC system, validated both in steady-state and transient conditions via experimental data from a 10 kWe waste heat recovery ORC system with a screw expander. [less ▲]

Detailed reference viewed: 129 (8 ULiège)
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See detailActive membership presentation
Mainjot, Amélie ULiege

Conference (2013, October 05)

Detailed reference viewed: 11 (1 ULiège)
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See detailPastoral dynamics in the Region of Diffa (Niger) : a descriptive analysis of livestock capital
Rouchet, François ULiege; Abdoulkadri, Laouali; Lebailly, Philippe ULiege et al

Conference (2013, October 05)

Detailed reference viewed: 31 (10 ULiège)
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See detailBlood pressure dipping and arterial stiffness in kidney transplant recipients
XHIGNESSE, Patricia ULiege; Saint-Remy, Annie ULiege; BONVOISIN, Catherine ULiege et al

Conference (2013, October 05)

In 70 kidney transplant recipients, nocturnal blood pressure(BP) nondipping (nondipping or reversed rhythm) was highly frequent (48% were nondippers and 29% had a reversed rhythm). When compared dippers ... [more ▼]

In 70 kidney transplant recipients, nocturnal blood pressure(BP) nondipping (nondipping or reversed rhythm) was highly frequent (48% were nondippers and 29% had a reversed rhythm). When compared dippers, nondippers and reversed, neither BMI, time on hemodialysis, graft survival, eGFR or antihypertensive drugs allowed to distinct the three groups. Pulse Wave Velocity (PWV) did not differ between groups but calcification score and ambulatory arterial stiffness index (AASI) were significantly the highest in récipients with reversed rhythm. That was also the case in nondippers recipients. [less ▲]

Detailed reference viewed: 70 (7 ULiège)
See detailL’interdisciplinarité comme posture impliquée et indisciplinée, créative et coopérative.
Denayer, Dorothée ULiege; Levain, Alix; Coutellec, Leo et al

Conference (2013, October 05)

Detailed reference viewed: 44 (3 ULiège)
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See detail"Qui perd gagne". Mystique et dialectique chez Sartre et Bataille
Soskin, Jonathan ULiege

Conference (2013, October 05)

Detailed reference viewed: 22 (2 ULiège)
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See detailBoues de vidange des fosses septiques: Caractérisation et voies de valorisation-Cas du Burundi
Nsavyimana, Gaston ULiege; Bigumandondera, Patrice; Baya, Dehenould Trésor et al

Conference (2013, October 04)

Les fosses septiques (F.S) sont classées parmi les digesteurs anaérobies les plus utilisés au monde dans le domaine de traitement des eaux usées (McCarty, 2001; Coelho et al., 2003; Wibisono et al., 2003 ... [more ▼]

Les fosses septiques (F.S) sont classées parmi les digesteurs anaérobies les plus utilisés au monde dans le domaine de traitement des eaux usées (McCarty, 2001; Coelho et al., 2003; Wibisono et al., 2003). Cependant, un des grands problèmes d’utilisation de ces dispositifs, est la gestion des boues de vidange (Strauss et al., 1997; Strauss et al., 2000; Koanda, 2006). Cette étude vise à: (i) caractériser les boues de vidange des FS et déterminer leur potentiel méthanogène; (ii) élaborer des modèles prédictifs de production cumulée maximale de biogaz à partir de quelques caractéristiques si les boues sont digérées; (iii) quantifier l'intérêt de leur co-digestion anaérobie avec des déchets solides organiques des marchés en vue de leur valorisation énergétique. Des paramètres indicateurs de pollution comme: DCOtotale, DCOsoluble, DCOparticulaire, DBO5 totale, DBO5 soluble, DBO5 particulaire, DBOtotale infinie, MVS, MES, AGV, pH, SO42-, N-NH4+, Ntotal et PO43- ont par ailleurs été analysés sur des échantillons des boues de vidange de vingt et une fosses septiques. Pour une bonne interprétation des données, quelques ratios entre certains paramètres ont été déterminés. Il s’agit de: DCOtotale/DBOtotale infinie, DCOtotale/DBO5 totale , DCOpart. /MES , DBO5 part. /MES , MVS/MES , NH4+/DCOtotale , NH4+/Ntotal, NH4+/DCOsoluble, DCOsoluble/SO42-, DCOpart./DCOtotale, DCOsoluble/DCOtotale, DBOtotale infinie/MES, MVS/DCOsoluble et MVS/DBOtotale infinie. Au regard des tendances centrales (valeurs médianes) correspondant à ces rapports (adimensionnels) entre paramètres (et qui sont respectivement égaux à 2,06; 2,83; 1,29; 0,49; 0,76; 0,10; 0,73; 0,40; 358; 0,79; 0,20; 0,85; 2,23 et 0,93), une hypothèse de valorisation des boues de vidange par digestion anaérobie a été formulée et exécutée. Néanmoins, celles-ci produisent de faibles quantités de biogaz (2,09 m3 biogaz/m3 boues fraiches de FS après deux mois de digestion; dont la composition est de 71% CH4 contre 29 % CO2). Ces résultats ont toutefois servi de base à l’établissement des modèles prédictifs de production cumulée maximale de biogaz (cas de digestion des boues seules), (Equations 1 et 2). Ces modèles ont été élaborés à l'aide d'un logiciel de traitement statistique (statistica®), en appliquant un ajustement non linéaire de Gauss-Newton. (1), (voir version pdf) (2), (voir version pdf) Où P est en m3, MVS, DBOtotale infinie et DCOsoluble en kg/m3 Lorsque les boues des FS sont digérées à une température différente de celle reprise dans les Equations (1) et (2), la production cumulée maximale de biogaz à une température quelconque peut être calculée à partir de l'Equation (4). Celle-ci est inspirée de la relation de Rittman et McCarty (2001),(Equation 3) selon laquelle la température influence l'activité dans un réacteur biologique. (3), (voir version pdf) (4), (voir version pdf) Où PT désigne la production cumulée maximale de biogaz à température T; P30°C traduit la production cumulée maximale de biogaz à 30°C; symbolise l'activité maximale à la température d'expérimentation T_exp; représente l'activité maximale calculée à la température T et désigne le coefficient de température. Une analyse des paramètres statistiques relatifs au modèle traduit par l’Equation (1) montre que la proportion de la variance expliquée du modèle vaut 0.97, avec un coefficient de détermination (R2) de 0.98. Cela indique une forte corrélation entre la variable dépendante (qui n'est rien d'autre que la production cumulée maximale de biogaz) et la variable indépendante (à savoir le rapport MVS/DBObrute infinie), ce qui explique la fiabilité du modèle. Quant au modèle traduit par l’Equation (2), la proportion de la variance expliquée équivaut à 0.96 tandis que le R2 vaut 0.98, ce qui renseigne, comme pour le premier modèle, d'une forte corrélation entre la production cumulée maximale de biogaz et le rapport MVS/DCOsoluble. Les valeurs des rapports MVS/DCOsoluble (2,23) et MVS/DBOtotale infinie (0,93) montrent en outre que ces boues contiennent plus de biomasse épuratrice que de substrat. Cette étude a montré que bien que les boues de vidange des fosses septiques (FS) soient presque stabilisées du point de vue valorisation énergétique, elles contiennent beaucoup de biomasse épuratrice qui peuvent servir d'inoculum pour la dégradation d'autres déchets, notamment les déchets solides fermentescibles. A cet effet, des essais dans des réacteurs pilotes (échelle de laboratoire) ont été exécutés pour évaluer l’intérêt de co-digestion anaérobie des boues de vidange des FS avec des déchets solides fermentescibles (déchets des marchés). L’étude a été menée en cinq scenarii différents, définis sur base d’un critère « Ratio: MVSFS/MOVdéchets ». En d’autre terme, ce critère n’est rien d’autre que le rapport biomasse-substrat. Les ratios: MVSFS/MOVdéchets respectivement égaux à 0,3; 0,5; 1; 1,5 et 2 ont été évalués. Le rapport MVSFS/MOVdéchets égal à 0,3 est jugé optimal pour une bonne valorisation de ces déchets avec un taux de production maximal de biogaz égal à 12,14 m3 biogaz/m3 mélange frais de gadoues-déchets. La composition du biogaz produit est de 65,6% CH4 de moyenne contre 34,4% de CO2 de moyenne. Cette étude démontre donc que ces déchets (boues de vidange et déchets solides fermentescibles) peuvent alors être considérés comme une ressource et non comme un problème . Mots clés: Fosses septiques; Boues de vidange; Caractérisation; Biomasse épuratrice; Potentiel méthanogène; Co-digestion anaérobie; Déchets solides organiques; Valorisation énergétique. [less ▲]

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See detailSoil classification, map legends and GIS logic: experiences from converting the legend of the soil map of Belgium into WRB
Dondeyne, Stefaan; Legrain, Xavier ULiege; Deckers, Jozef et al

Conference (2013, October 04)

A systematic soil survey of Belgium was conducted from 1948 to 1991. The purpose was to have a soil information base adequate for boosting agricultural production after the Second World War. Field surveys ... [more ▼]

A systematic soil survey of Belgium was conducted from 1948 to 1991. The purpose was to have a soil information base adequate for boosting agricultural production after the Second World War. Field surveys were done at the detailed scale of 1:5000, while the maps were published at a 1:20,000 scale. To enable soil surveyors to identify soils in the field, an original soil classification was developed based on readily observable physical and morphogenetic characteristics. Within the European Union, the World Reference Base (WRB) for Soil Resources (IUSS Working Group WRB, 2007), has been adopted as the common classification system. As soil surveys in most European countries were conducted independently, the challenge now is to convert the national legends into a common WRB legend. In Belgium, such a conversion is being implemented and we present some lessons learned in relation to classification and map legends. The legend of the soil map of Belgium is based primarily on soil texture, drainage status and profile development. “Soil series” are defined in an open and non-hierarchical structure by combining these three categorical variables, and to which modifiers can be added such as parent material, stoniness or depth to a substratum. The WRB-2007 classification is based on diagnostic features defined by morphological, physical and chemical properties. The conversion of the legend of the soil map of Belgium to WRB is based on insights gained from classifying, so far, more than 360 legacy soil profiles in combination with field observations. From these insights, heuristic rules have been deduced regrouping soil series into Reference Soil Groups (RSG) and for which some qualifiers could also be identified. Other qualifiers were determined by relying on databases of the legacy soil profiles. To take regional variability into account, the conversion is done by physiographic zone. Converting the legend of the soil map of Belgium to WRB actually leads to a regrouping of soil series into broader WRB categories and which can neatly be represented on 1:50,000 scale maps. Hence, it does not imply substituting one classification with another one. Users, who would need the detailed information, can still refer to the detailed symbols of the soil series. The regrouping of soil series has been made possible thanks to the flexibility of WRB for combining various qualifiers. However, as the WRB-2007 classification leads to a varying number of qualifiers it is less practical for constructing map legends. Therefore, the WRB-2010 guidelines (IUSS Working Group WRB, 2010) propose to organise qualifiers in main and optional ones with priority rules for the main qualifiers. As illustrated in Table 1, this approach may highlight, or hide, some qualifiers inconsistently. When for example only two qualifiers are retained in a map legend, the qualifier Endogleyic of stony, poorly drained Albic Podzols will not be indicated, while it will be indicated when such soils are not stony (Table 1). Moreover, the proposed hierarchy is sometimes also inconsistent when compared across Reference Soil Groups (RSG) as illustrated for the Arenosols and Regosols (Table 1). These drawbacks could be avoided if qualifiers would be organised into thematic groups ― such as profile development, texture, drainage, depth of substratum and fertility ― rather than by ranking them. Grouping qualifiers thematically would have the advantage to give more flexibility to the map user working with GIS, and indeed, it would render WRB a more “GIS logic” classification system. [less ▲]

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See detailTourisme rural : le parent pauvre du financement des activités en milieu rural camerounais
Lekane Tsobgou, Dieudonné ULiege; MEDIEBOU CHINDJI, Rose

Conference (2013, October 04)

Le tourisme en général et le tourisme rural est une activité économique en plein essor dans le monde. Au Cameroun par exemple, les espaces ruraux regorgent de nombreuses destinations touristiques, ainsi ... [more ▼]

Le tourisme en général et le tourisme rural est une activité économique en plein essor dans le monde. Au Cameroun par exemple, les espaces ruraux regorgent de nombreuses destinations touristiques, ainsi que de fortes potentialités naturelles et culturelles à promouvoir. 2/3 des citadins retournent fréquemment dans leur terroir pour diverses raisons et dépensent d’énormes sommes d’argent d’où l’intérêt pour les promoteurs d’activités touristiques de capter cette masse et ce flux monétaire. L’abandon des plans quinquennaux, la disparition de la Société Camerounaise du Tourisme (Socatour), du Fond National pour le Développement Rural (Fonader) et du Fonds de Garantie et d’Assistance aux Petites et Moyennes Entreprises (Fogape) depuis la décennie 1990 ont créé dans le secteur du tourisme rural, une grave crise de financement et d’encadrement des acteurs et de leurs activités. La forte mobilisation des ressources financières venant des institutions étatiques, de la coopération internationale, des comités de développement locaux (Kengne Fodouop et Dejon 2003), les élites (Elong 2012) et des acteurs micro financiers privés oriente 90% des lignes de crédit ou du financement rural en direction des projets agricoles et commerciaux (Lekané 2011., Tchékoté 2012) et non vers les activités du tourisme. Pourtant, Le tourisme rural au Cameroun serait une opportunité intéressante dans le processus du développement local (Onomo 2009, Kimbu 2012). A ce titre, il constitue un gisement intarissable d’emplois dans l’hébergement, la restauration, le transport, le marketing et la commercialisation des destinations, etc… La segmentation de cette activité en milieu rural devrait favoriser la création de richesse (DSCE, 2010). Qu’est ce qui explique le fait qu’après une quarantaine d’années de financement du monde rural, le secteur du tourisme continue de chercher en vain « l’argent chaud » susceptible de promouvoir durablement ses activités ? Comment comprendre l’abandon d’un secteur pourtant intégrateur de l’économie rurale au Cameroun? Est-il possible d’assurer la durabilité du financement des espaces ruraux afin de mieux commercialiser et rentabiliser les ressources naturelles et culturelles qui s’y trouvent [less ▲]

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See detailConvective Drying of Mixtures of Sewage Sludge and Sawdust in a Fixed Bed
Li, Jie ULiege; Fraikin, Laurent ULiege; Salmon, Thierry ULiege et al

Conference (2013, October 04)

This work is part of a project aiming at developing a renewable fuel for gasification purposes, through the convective drying of sludge/wood mixtures. The first step consists in characterizing the drying ... [more ▼]

This work is part of a project aiming at developing a renewable fuel for gasification purposes, through the convective drying of sludge/wood mixtures. The first step consists in characterizing the drying behaviour of sludge/sawdust mixtures, in a convective fixed bed dryer. In particular, the influence of the mixing step (no mixing against 30 s at 40 rpm) and the sawdust/sludge ratio (1/9, 2/8, 3/7 and 4/6 on a dry basis) have been investigated, as well as the drying temperature (50 °C, 80 °C and 110 °C). As showed in a previous work, the addition of dry matter into sludge has an impact on the initial 3D structure of the bed of extrudates to be dried. Moreover, it is well known that the volume shrinkage occurring during sludge drying will affect the drying velocity. In this study, X-ray tomography, a non-invasive imaging technique, is used to assess changes in volume, porosity and exchange surface between the beginning and the end of the drying process. Results first confirm the importance of the mixing step on the drying behaviour: the drying rate of the mixed sludge is slower than the one of original sludge. Nevertheless the addition of sawdust is shown to have a positive impact on the drying process from mass ratio of 2/8, with observed drying rates higher than for the original sludge. During the whole drying process, the volume and exchange surface of the sample increase and the porosity decreases as the mass ratio increases. These results indicate that the air and the sample contact more fully with more sawdust addition, resulting from bed expansion and exchange surface increase. Hence, the heat and mass transfer efficiency between the air and the material increases and consequently the drying rate. Further work will be done in order to assess the impact of the drying temperature and to characterize the behaviour of these samples during pyrolysis using thermo gravimetric analysis. [less ▲]

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See detailEcologie et répartition des populations pédomorphiques de Tritons palmés du Larzac
Denoël, Mathieu ULiege

Conference (2013, October 04)

Detailed reference viewed: 21 (7 ULiège)
See detailFrom One Loop To Another: From Minimalism To Indie Rock
Levaux, Christophe ULiege

Conference (2013, October 04)

Detailed reference viewed: 33 (5 ULiège)
See detailAge-related Macular Degeneration Study: A Metabolomics Approach
LAMBERT, Vincent ULiege; De Tullio, Pascal ULiege; Hansen, Sylvain ULiege

Conference (2013, October 04)

Age-related macular degeneration (AMD) is a leading cause of vision loss in the western world among people aged 50 or older. 90% of all vision loss due to AMD result from the exudative form, which is ... [more ▼]

Age-related macular degeneration (AMD) is a leading cause of vision loss in the western world among people aged 50 or older. 90% of all vision loss due to AMD result from the exudative form, which is characterized by choroidal neovascularization (CNV). Age-related changes that induce pathologic CNV are incompletely understood. A successful application of anti-VEGF approaches in the clinic is obviously a turning point in AMD treatment. Nevertheless, despite such important advances, critical issues remain to be addressed. To better understand the etiology of this pathology, we have used and improved a model of laser-induced murine choroidal neovascularization. As none is known about the metabolic changes in patients with AMD, we decided to apply a 1H NMR metabolomics approach on AMD patients and on a mice CNV experimental model. This technique is a relatively new branch of « omics » technologies focused on the analysis and measurement of endogenous metabolites. These experiments provide unique challenges to fulfill the goal of improving the current status of physiological information related to metabolome and in general to functional genomics. For this purpose, sera from control and AMD patients, induced and non-induced mice have been collected and the metabolic profiles of these samples were determined by 1H NMR. After post-processing treatments, the different spectra were analyzed by statistical discriminant methodologies (PCA, ICA, PLS-DA). This approach allows the differentiation between control and AMD patients and between laser-induced mice and the control mice group. Moreover, the same discriminating spectral zones, lactate and lipoproteins profil, have been identified in human and mice model, leading to the emergence of different putative biomarkers. In mice model of laser-induced CNV, normalization of circulating lactate by dichloroacetate, decreases CNV development. These first interesting results open new way in the study of the AMD etiology and validate the use of 1H NMR and CNV model for the understanding of Age-related Macular Degeneration. [less ▲]

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See detailSoins en dehors des heures en Belgique: le point en 2013.
Belche, Jean ULiege

Conference (2013, October 03)

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See detailHolocaust postmemory and the legacy of un-death in Nicole Krauss’ Great House
Munos, Delphine ULiege

Conference (2013, October 03)

In an interview closely following on the release of The History of Love, Krauss made it clear that, contrary to what some critics had ventured, her second novel was not about Holocaust survivors. “I am ... [more ▼]

In an interview closely following on the release of The History of Love, Krauss made it clear that, contrary to what some critics had ventured, her second novel was not about Holocaust survivors. “I am the grandchild of people who survived that historical event,” Krauss pointed out. “I’m not writing their story – I couldn’t write their story […]. What interests me is the response to catastrophic loss.” Great House, Krauss’s third novel, can be seen to further investigate this “response to catastrophic loss” – in a way which makes only tangential and mediated references to the Holocaust. The novel spans eighty years, starting from the near-end of World War 2, and traces the passing-on of a desk of massive proportions. Complete with nineteen drawers, one of which remains locked until it is symbolically revealed to be empty at the close of the book, the desk operates as some kind of trans-historical fetish for most of its successive keepers (and aspiring acquirers). Narrated through a set of five characters whose lives prove overshadowed less by the Holocaust itself than by its felt resonances in the psyches of loved ones, Great House is a polyphonic work that raises questions about the anatomy of ‘Holocaust postmemory’ (Marianne Hirsch), its temporality, but also its reification in conformity with defense mechanisms that take the form of death-denying fantasies. Here, while turning to the past, some clearly unreliable first-person narrators reveal their lifelong investment in fetishizing memories of themselves and others so as to better keep all sense of temporality and mortality at bay – in a way suggesting that fantasies of un-death have helped them fill in the gap left by the unspeakable horror of the Holocaust, and were later transmitted in lieu of ‘memory proper’. This paper will thus focus on Great House’s rich imagery, and its narrative strategies, in order to investigate Krauss’ representation of the paradoxes of Holocaust postmemory. [less ▲]

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See detailMolecular dynamic simulations of a beta amphiphilic peptide
Crowet, Jean-Marc ULiege; Deschamps, Antoine; Soumillion, Patrice et al

Conference (2013, October 03)

Detailed reference viewed: 65 (8 ULiège)
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See detailRetirement and the onset of Alzheimer's disease: The ICTUS study
Grotz, Catherine ULiege; Letenneur, luc; Bonsang, Eric et al

Conference (2013, October 03)

Detailed reference viewed: 40 (6 ULiège)
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See detailHow did endemic cyprinids and exotic european catfish move in a large river ecosystem?
Capra, Hervé; Pella, Hervé; Ovidio, Michaël ULiege

Conference (2013, October 03)

Detailed reference viewed: 39 (2 ULiège)
See detailDosages quantitaifs de principes actifs dans les formes solides par spectroscopie proche infrarouge: Application pratique au test d'uniformité de teneur des comprimés
Ginot, Yves-Michel; Bernard-Moulin, Patrick; Boiret, Mathieu et al

Conference (2013, October 03)

L'augmentation du nombre de dosages à réaliser dans l'industrie pharmaceutique conduit à rechercher des méthodes alternatives. La spectroscopie proche infrarouge répond précisément à cette demande en ... [more ▼]

L'augmentation du nombre de dosages à réaliser dans l'industrie pharmaceutique conduit à rechercher des méthodes alternatives. La spectroscopie proche infrarouge répond précisément à cette demande en permettant des dosages rapides, non destructifs et respectueux de l'environnement. Le texte publié dans SFSTP Pharma Pratiques en 2010 énonçait la méthodologie à suivre pour développer une technique de dosage de substance active dans une formulation solide de type comprimé par spectroscopie proche infrarouge. Il est apparu intéressant d'illustrer et de compléter les différentes étapes de cette méthodologies au travers d'exemples. [less ▲]

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See detailMolecular mechanisms of metal hyperaccumulation in plants
Lekeux, Gilles ULiege

Conference (2013, October 03)

Detailed reference viewed: 28 (4 ULiège)
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See detailMeasuring Effects of Reflection on Learning: A Physiological Study
QI, Wen; Verpoorten, Dominique ULiege; Westera, Wim

Conference (2013, October 03)

As an economical and feasible intervention, reflection demands learners using critical thinking to examine presented information, questioning its validity, and drawing conclusions based on the resulting ... [more ▼]

As an economical and feasible intervention, reflection demands learners using critical thinking to examine presented information, questioning its validity, and drawing conclusions based on the resulting ideas during a learning process. The aim of this study is to gain insight into the effects of practicing short, frequent and structured reflective breaks that are interspersed with the reading process of a learning material. It tries to reveal whether physiological signals can be used as appropriate indicators to reveal the actual changes of cognitive states while introducing different reflective breaks during learning. The recorded physiological signals include skin temperature, blood volume pulse, pulse volume amplitude, and pulse rate. The results show that while these embedded “reflection rituals” did not affect learners’ performance they had significantly impact on time on task, perceived learning and those learners' physiological (cognitive) states. Physiological data returned significant differences between the reading and reflection activity. Measurements of temperature and pulse rate are lower when covering the course equipped with additional reflection affordances while blood volume pulse and pulse volume amplitude are higher. In addition, applying statistics analysis to the physiological data exhumes significant differences between different types of reflection activities for those measurements including skin temperature, pulse volume amplitude and pulse. [less ▲]

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See detailThe Convention on Diversity of Cultural Expressions in the Digital Era
Vlassis, Antonios ULiege

Conference (2013, October 03)

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See detailBluetongue Virus RNA Detection by Real-Time RT-PCR in Post-Vaccination Samples from Cattle
De Leeuw, Ilse; Garigliany, Mutien-Marie ULiege; Bertels, Guido et al

Conference (2013, October 02)

Detailed reference viewed: 12 (1 ULiège)
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See detailComment concilier médecine factuelle et médecine personnalisée en pratique clinique
Krzesinski, Jean-Marie ULiege

Conference (2013, October 01)

Médecine factuelle (EBM) et médecine personnalisée : définition, avantages et limites. Cas cliniques exemplatifs dans l'HTA

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See detailComparison of 3 emerging optical NDI techniques on complex shaped composite structures based on carbon fiber
Georges, Marc ULiege

Conference (2013, October 01)

Thermography, shearography and laser ultrasonics are 3 contactless emerging techniques which allow nondestructive inspection of composite structures. Thermography and shearography are full-field ... [more ▼]

Thermography, shearography and laser ultrasonics are 3 contactless emerging techniques which allow nondestructive inspection of composite structures. Thermography and shearography are full-field techniques yielding measurement of respectively local temperature variations or deformations of a structure undergoing a stress (thermal, pressure, vibration). Laser ultrasonics allows remote ultrasound generation in the composite by thermoelastic effect followed by remote measurement of the surface displacements under the effect of the ultrasound echoes without coupling. This point-like technique requires scanning. The three techniques have been selected in our project since they allow inspection of complex shaped parts. We present compared results obtained on a variety of aeronautical industrial composite parts. [less ▲]

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See detailAlternative splicing switches tropism of a gammaherpesvirus
Machiels, Bénédicte ULiege; Stevenson, P.G.; Vanderplasschen, Alain ULiege et al

Conference (2013, October)

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See detailThe Coordinated Climate-Crop Modeling Project (C3MP)
Ruane, A.; McDermid, S.; Hudson, N. et al

Conference (2013, October)

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See detailAn agro-economic characterizaton of the Niger household : case of Tahoua
Rouchet, François ULiege; Moussa dit Kalamou, Mahamoudou; Andres, Ludovic ULiege et al

Conference (2013, October)

Since the big drought of 1984, the department of Tahoua in the Republic of Niger is very vulnerable to structural and temporal disruptions. The food vulnerability is defined as “the analysis of coping ... [more ▼]

Since the big drought of 1984, the department of Tahoua in the Republic of Niger is very vulnerable to structural and temporal disruptions. The food vulnerability is defined as “the analysis of coping strategies and reactions faced with the structural or/and temporary shocks, if the coping strategies are not effectives, the people are in a temporary or structural situation of food vulnerability” (Andres and Lebailly, 2011a; Andres, 2012). The environment is much degraded by the wind and water erosion. Despite many opportunities to develop the rural sector, the region of Tahoua has a structural problem because the income is not very high and the major part of the population is poor. This paper analyzes the characteristics of households in function of the food system. The target is to classify the population in relation to the food agricultural systems. A global description is defined and characterized for the agricultural system. The paper is based on a survey realized during 2010 and 2011. The investigators have interviewed 420 heads of household. The results are analyzed by Excel and SPSS software. The statistical analysis is a comparison of averages and the descriptive statistics. The results show a difference between the north (pastoral) and the south (agricultural) of the region of Tahoua, especially, for the production of cowpea, the number of tropical livestock units, the number of fields. Furthermore, the systemic view is very important to identify the specific constraints and opportunities of each food system. [less ▲]

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See detailTicks of the trade: technical analysis self-justified
Claisse, Frédéric ULiege

Conference (2013, October)

As opposed to fundamental analysis, financial chartism (or technical analysis) is based on the assumption that future movements of a traded asset can be inferred from past regularities. In spite, or maybe ... [more ▼]

As opposed to fundamental analysis, financial chartism (or technical analysis) is based on the assumption that future movements of a traded asset can be inferred from past regularities. In spite, or maybe by virtue of its lack of scientific grounds, it enjoys an ever-growing popularity among amateur traders, as countless websites provide free, simple and powerful tools for making professional-looking charts and even automate the detection of trends. Though technical analysts account for the validity of chart patterns in terms of market psychology, constructivist explanations also abound among trading communities: it is all as if economic agents reflexively used technical analysis as a means of coordination on the market. Markers like moving averages and trend lines serve as self-referent indicators whose efficacy only gets reinforced as more agents use it as pivotal points. Performativity is the technical analyst’s most natural language: explicit mentions to mechanisms such as the self-fulfilling prophecy or the Keynesian beauty contest are the only justifications s/he needs. Some chartists even claim their discipline does not contradict the efficient-market hypothesis: if prices already reflect all past publicly available information, one may skip the hassle of dissecting balance sheets or mastering pricing models, focusing instead on candlestick or diagram patterns which, by conjecture, contain all the necessary information to explain price movements. Drawing on the comparative analysis of nonprofessional trading blogs, our paper examines how these major epistemic modes of justification of technical analysis have come to support each other, in a context of proliferation of charting tools. [less ▲]

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See detailSeals as sentinel species for the marine environment
Das, Krishna ULiege

Conference (2013, October)

Detailed reference viewed: 27 (3 ULiège)
See detailDer Deutsche Buchpreis als Erfolgsgarant für deutsche Literatur im Ausland? Das Beispiel von Julia Francks "Die Mittagsfrau"
Houscheid, Karin ULiege

Conference (2013, October)

The German Book Prize can be considered an important international success driver for its laureates. Their Foreign Rights sales are much higher than those of other prize-winning books. This is due to the ... [more ▼]

The German Book Prize can be considered an important international success driver for its laureates. Their Foreign Rights sales are much higher than those of other prize-winning books. This is due to the remarkable economic and symbolic capital and especially the general publicity the German Book Prize generates. The following article wants to show how these factors favour the transfer of German contemporary fiction into French on the basis of Julia Franck’s novel Die Mittagsfrau. [less ▲]

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See detailRobust SFC method optimization using design space strategy
Dispas, Amandine ULiege; Lebrun, Pierre ULiege; Hubert, Philippe ULiege

Conference (2013, October)

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See detailEtude de la conduction nerveuse motrice et sensitive aux membres supérieurs et inférieurs
WANG, François-Charles ULiege; LEJEUNE, Thierry

Conference (2013, October)

Detailed reference viewed: 69 (5 ULiège)
See detailWhere is the Conflict? Delving in Walloon Science, Technology and Innovation Politics
Charlier, Nathan ULiege; Thoreau, François ULiege

Conference (2013, October)

Building on preliminary empirical observations, this paper seeks to analyze a specific feature of science, technology and innovation (STI) policies in Wallonia (Belgium); that is, the apparent lack of ... [more ▼]

Building on preliminary empirical observations, this paper seeks to analyze a specific feature of science, technology and innovation (STI) policies in Wallonia (Belgium); that is, the apparent lack of contestation regarding policy making. Over the last decade, multiple programs and plans were implemented by the regional government. These reforms of STI policy are endorsed by multiple stakeholders, including parliamentary opposition, labor unions and employers’ organizations. Seemingly, Walloon STI policies do not configure as conflict zones. This is remarkable since these programs and plans reconfigure the relationship between science, technological innovation and the market. In other policy fields, opposition is more pronounced and protracted. In other places/times, STI policy is/has been a conflicting matter. This is all the more striking in a context of strategic science advent, where STI is placed at the heart of large regional policy project, building strong ties with economic development and regional identity shaping. Can STS provide the tools and vocabulary to analyze non-conflictual, « cold » situations such as current STI policies and their evolution in Wallonia? Building on semi-structured interviews with key informants, our analysis will pay attention to Walloon contextual specificities as well as macro-level considerations: can dominant, taken-for-granted master narratives such as “knowledge-based economy”, “Regional innovation systems”, or, more recently, “open and responsible innovation” account for the relative smoothness of STI policies? We conclude that there is a felt need for empirical insights to analyze how these master narratives are locally enacted. [less ▲]

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See detailDioxins in our food: Where are we 14 years after the Belgian chicken-gate?
Focant, Jean-François ULiege

Conference (2013, October)

Detailed reference viewed: 17 (1 ULiège)
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See detailMinimishing the nutritional deficit in ill preterm infants
SENTERRE, Thibault ULiege

Conference (2013, October)

Detailed reference viewed: 5 (0 ULiège)
See detailThe influence of palaeophytogeography on the zosterophyllopsid diversity
Cascales - Miñana, Borja ULiege; Meyer-Berthaud, Brigitte

Conference (2013, October)

Detailed reference viewed: 19 (0 ULiège)
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See detailThe extinction of ichthyosaurs is a facet of a major Cenomanian turnover in marine ecosystems
Fischer, Valentin ULiege

Conference (2013, October)

Untangling geosphere-biosphere interactions is crucial to understand the biodiversity and how it might evolve in a changing environment. But little is known about the possible impact of environmental ... [more ▼]

Untangling geosphere-biosphere interactions is crucial to understand the biodiversity and how it might evolve in a changing environment. But little is known about the possible impact of environmental changes on animals occupying the highest levels of the marine trophic chains. The Cretaceous period offers a fantastic opportunity to investigate such relationship, being characterized by a globally warm but changing climate and a diverse assemblage of aquatic reptiles that underwent profound modifications during this period, ultimately permitting the diversification of the animals dominating nowadays marine ecosystems. The origin, magnitude and nature of these turnovers are poorly understood and have rarely been investigated in a global canvas. Especially, how and why ichthyosaurs, the ‘fish-shaped’ marine reptiles, went extinct at the beginning of the Late Cretaceous has been a mystery for decades. Previous assessments of their diversity suggested ichthyosaurs were already on the decline since the end of the Jurassic; their final extinction was therefore regarded as anecdotal. Several theories have proposed unique biological drivers to this event, including a break in the food chain or competition with other marine vertebrates. The reassessment of the taxonomy, phylogeny and paleoecology Cretaceous ichthyosaurs from Eurasia tells a much different story. Ichthyosaurs were ecologically and taxonomically diverse in several Eurasian ecosystems up to the latest Early Cretaceous. This revision also reveals that their extinction is diachronic, being staggered over four phases that span the entire Cenomanian stage. Detailed comparison with other groups suggests the multiphased extinction of ichthyosaurs is not an isolated event, as was previously assumed, but correlates with profound, multiphased turnovers among other marine animals, such as microplankton, rudists, ammonoids, and pythonomorphs. The diversity and contemporaneity of the biotic responses suggest worldwide physicochemical drivers for this profound reorganization of the marine ecosystems. The extinction of ichthyosaurs therefore appears as one of the facets of a much wider event that affected most of the marine ecosystems during the Cenomanian. [less ▲]

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See detailCassini UVIS Saturn Auroral Images from the 2013 HST/Cassini Campaign
Pryor, Wayne; Jouchoux, Alain; Esposito, Larry et al

Conference (2013, October)

In 2013 coordinated observations of Saturn by the Cassini spacecraft and Hubble Space Telescope (HST) were obtained. During these observations the Cassini spacecraft provided a high-latitude view of ... [more ▼]

In 2013 coordinated observations of Saturn by the Cassini spacecraft and Hubble Space Telescope (HST) were obtained. During these observations the Cassini spacecraft provided a high-latitude view of Saturn's auroras. Intense auroras were observed by the Ultraviolet Imaging Spectrograph (UVIS) from close range (about 5 Saturn radii away). A 6-frame UVIS movie has been constructed from some of the observations from May 20- 21, 2013 showing the evolution of two bright auroral features. We report on the UVIS images, the corresponding spectra, and compare the UVIS data to HST images and data from other Cassini instruments. [less ▲]

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See detailProtection effects or natural variability? The case of seagrass amphipods
Sturaro, Nicolas ULiege; Lepoint, Gilles ULiege; Pérez-Perera, Amanda et al

Conference (2013, October)

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See detailModeling post-combustion CO2 capture with assessment of solvent degradation
Léonard, Grégoire ULiege; Belletante, Ségolène; Cabeza Mogador, Bruno et al

Conference (2013, October)

Post-combustion CO2 capture in power plants is one of the most mature technologies for a short-term and large-scale decrease of CO2 emissions while simultaneously addressing the growing global energy ... [more ▼]

Post-combustion CO2 capture in power plants is one of the most mature technologies for a short-term and large-scale decrease of CO2 emissions while simultaneously addressing the growing global energy demand. CO2 is chemically absorbed in an amine solvent that can be regenerated at higher temperature, producing a pure CO2 stream. However, the large impact of this technology on the power plant efficiency and the environmental penalty are the main drawbacks for large-scale implementation. In this work, an innovative approach combining process modeling and evaluation of the environmental penalty due to amine degradation is presented. Based on experimental results, the kinetics of solvent oxidative and thermal degradation is estimated and included in the process model developed in Aspen Plus. Using this model, the influence of operating parameters like the oxygen concentration in the flue gas or the solvent regeneration pressure is studied. This model is a first step for a multi-objective optimization of the CO2 capture process, assessing both energy and environmental penalties of this technology. [less ▲]

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See detailPenalized smoothing approaches for PDEs
Frasso, Gianluca ULiege; Jaeger, Jonathan; Lambert, Philippe ULiege

Conference (2013, October)

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See detailAdvances in the hunt for cadaveric decomposition VOC profiling
Stefanuto, Pierre-Hugues ULiege; Stadler, S; Pesesse, R et al

Conference (2013, October)

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See detailBiodiversité et observation participative en ligne : modèle et enjeux de la plateforme Observations.be
Farah, Jihad ULiege

Conference (2013, October)

Dans cette intervention, nous posons la question de la métamorphose des rapports entre citoyens et institutions suite au développement des NTIC, à travers l’exemple de la plateforme d’observation de la ... [more ▼]

Dans cette intervention, nous posons la question de la métamorphose des rapports entre citoyens et institutions suite au développement des NTIC, à travers l’exemple de la plateforme d’observation de la biodiversité Observations.be et de l’Institut Bruxellois de Gestion de l’Environnement à Bruxelles (IBGE). Nous nous intéressons surtout à voir si, comme le signale Charvolin (2009), une meilleure maîtrise des pratiques de la recherche – dans notre cas à travers les NTIC – peut réellement mettre à pied d’égalité amateur et expert. Nos réflexions ici s’appuient sur des entretiens, notamment auprès des gestionnaires du dossier biodiversité à l’IBGE et des administrateurs d’Observations.be, ainsi que sur l’analyse des fonctionnalités du site lui-même. [less ▲]

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See detailIntroduction et conclusion
Dozo, Björn-Olav ULiege; Preyat, Fabrice; Tilleuil, Jean-Louis

Conference (2013, October)

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See detailDe l'importance des représentations pour résoudre des problèmes « non routiniers ».
Vlassis, Joëlle; Gamo, Sylvie; Fagnant, Annick ULiege

Conference (2013, October)

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See detailDemystifying Comprehensive GC
Focant, Jean-François ULiege

Conference (2013, October)

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See detailModeling cell/matrix growth in three dimensional scaffolds under dynamic culture conditions
Guyot, Yann ULiege; Papantoniou, Ioannis; Chai, Yoke Chin et al

Conference (2013, October)

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See detailLes travaux de reméandration de l'Eau Blanche dans le cadre du projet Walphy: comparatif des techniques, coûts et efficacité
De le Court, Bernard; Verniers, Gisèle; Peeters, Alexandre ULiege

Conference (2013, October)

L’Eau Blanche est un petit cours d’eau de plaine s’écoulant dans une région agricole. Il a subi dans les années 60 des travaux importants de rectification qui ont fortement banalisé ses habitats ... [more ▼]

L’Eau Blanche est un petit cours d’eau de plaine s’écoulant dans une région agricole. Il a subi dans les années 60 des travaux importants de rectification qui ont fortement banalisé ses habitats aquatiques et rivulaires et bloqué sa dynamique fluviale. Dans le cadre du projet Walphy, des travaux de restauration du cours d’eau ont été réalisés de 2010 à 2011 sur 3 sites, présentant des contraintes différentes en fonction desquelles on a du faire varier l’ambition de la restauration. Dans le village de Mariembourg, les aménagements se limitent à améliorer le lit mineur par des structures diversifiant les écoulements et la création de petits habitats piscicoles. A Nismes, une emprise modeste dans le lit majeur permet la recréation d’une sinuosité par déblai et remblai. A Boussu, un ancien méandre s’étalant largement dans le lit majeur a pu être récupéré. Les trois chantiers sont comparés dans leur conception, leur mise en œuvre et leur coût. Deux ans après les travaux, une évaluation de l’efficacité des réalisations est proposée sur base d’une cartographie des micro-habitats et le calcul d’indices hydromorphologiques. Par ailleurs, la dynamique du cours d’eau a fait l’objet d’un suivi basé sur l’analyse de levés topographiques. Cette analyse est complétée par les premiers résultats de suivis biologiques (macrophytes, macro-invertébrés et poissons). [less ▲]

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See detailSuivis hydromorphologiques et écologiques dans le cadre du projet Walphy
Verniers, Gisèle; Peeters, Alexandre ULiege; De le Court, Bernard

Conference (2013, October)

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See detailOf Apes and Men: An Ethno-Ethological Approach of Knowledge in a Context of Scientific Conservation, Cameroon
Dieudonné, Mélodie ULiege

Conference (2013, October)

The approach of ethno-ethology appears as a key-tool to overcome the duality of the concepts of nature and culture in the study of local knowledge. We offer reflections about human-gorilla relationships ... [more ▼]

The approach of ethno-ethology appears as a key-tool to overcome the duality of the concepts of nature and culture in the study of local knowledge. We offer reflections about human-gorilla relationships, the diversity and encounter of different modes of knowledge in a context of great apes scientific conservation in a tropical Cameroonian forest [less ▲]

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See detailDo evolutionary floras exist?
Cleal, Christopher J.; Cascales - Miñana, Borja ULiege

Conference (2013, October)

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See detailNursing adherence on ventilator care bundle in a burn unit.
DEPAYE, Nicolas ULiege; ROUSSEAU, Anne-Françoise ULiege; LAPORT, Virginie ULiege et al

Conference (2013, September 30)

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See detailFIRE TESTING OF HIGH-STRENGTH STEEL CIRCULAR COLUMNS
Tondini, Nicola; Van Long, Hoang; Demonceau, Jean-François ULiege et al

Conference (2013, September 30)

This paper presents an experimental-numerical study on the behaviour of High Strength Steel (HSS) columns at elevated temperature, both on Circular Hollow Sections (CHS) and on a Concrete Filled Tube (CFT ... [more ▼]

This paper presents an experimental-numerical study on the behaviour of High Strength Steel (HSS) columns at elevated temperature, both on Circular Hollow Sections (CHS) and on a Concrete Filled Tube (CFT). The measured yield strength of the circular sections was in the order of 820 MPa. In detail, three HSS CHS and a HSS CFT were tested under the standard ISO fire with constant eccentric compression load. The evolution of temperature and defor-mation patterns were measured by means of a comprehensive instrumentation made of ther-mocouples and displacement transducers. Numerical analyses were performed and compared with experimental data by employing stress-strain relationships of carbon steel at elevated temperatures provided by EN1993-1-2 associated with two different sets of reduction factors: i) those provided by EN1993-1-2 valid up to S460 steel grades; and ii) those proposed in the literature and based on tests on HSS. [less ▲]

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See detailLe point sur la zircone, aspects cliniques et scientifiques
MAINJOT, Amélie ULiege

Conference (2013, September 28)

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See detailPères gays en transition: croyances, relations et pistes thérapeutiques
D'Amore, Salvatore ULiege

Conference (2013, September 28)

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