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See detailStrongly interacting dark matter doesn't explain the DAMA signal
Laletin, Maxim ULiege

Scientific conference (2017, November 10)

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See detailCharles de Méan, le Papinien liégeois
Lagasse, Benoît ULiege

Doctoral thesis (2017)

La thèse tend à déterminer si Charles de Méan, surnommé le Papinien liégeois, mérite ce surnom signifiant qu'il a été le plus grand jurisconsulte qu'ait connu la principauté de Liège. Pour ce faire, elle ... [more ▼]

La thèse tend à déterminer si Charles de Méan, surnommé le Papinien liégeois, mérite ce surnom signifiant qu'il a été le plus grand jurisconsulte qu'ait connu la principauté de Liège. Pour ce faire, elle tend à étudier une partie de son oeuvre majeure, les Observationes et res judicatae ad jus civile Leodiensium, Romanorum, aliarumque gentium canonicum et feudale. Par ailleurs, la thèse met en exergue la spécificité du droit liégeois et tend à déterminer les influcences subies par ce droit. [less ▲]

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See detailLe corps, le territoire et le temps du sujet borderline
Englebert, Jérôme ULiege

Conference (2017, November 09)

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See detailLe jeu vidéo : pas si méchant. Des stéréotypes à la réalité
Krywicki, Boris ULiege

Conference given outside the academic context (2017)

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Peer Reviewed
See detailRédiger en langue étrangère à l’université : des représentations à l’évaluation des pratiques scripturales
Meunier, Deborah ULiege

Conference (2017, November 09)

Le champ des littéracies universitaires (Blaser et Pollet, 2010 ; Delcambre et Lahanier-Reuter, 2010) prend pour objet d’étude les normes génériques, textuelles, pragmatiques des écrits produits à ... [more ▼]

Le champ des littéracies universitaires (Blaser et Pollet, 2010 ; Delcambre et Lahanier-Reuter, 2010) prend pour objet d’étude les normes génériques, textuelles, pragmatiques des écrits produits à l’université, mais aussi celle des représentations associées aux pratiques de lecture et d’écriture. Au-delà de la maitrise du code linguistique d’enseignement, les étudiants doivent acquérir des compétences discursives liées aux genres écrits et oraux auxquels ils sont confrontés durant leur cursus (cours magistral, séminaire, exposé, résumé, compte-rendu, rapport, travail de fin d’études,…). Nous verrons quels sont les défis que pose la maitrise des genres de discours universitaires écrits en français pour les étudiants non francophones : comment se fait l’acculturation à une écriture heuristique pour un étudiant qui apprend dans une langue étrangère ? Quelles sont les représentations (explicites ou implicites) des normes génériques activées par les enseignants (par ex. via les consignes) ? Et quelle(s) posture(s) adopter lorsqu’on doit évaluer des productions écrites en langue étrangère quand la langue (française) n’est pas objet d’enseignement ? A partir d’une analyse de discours d’enseignants en Sciences humaines, nous ferons le point sur les représentations et les normes qui régissent les pratiques et les défis actuels du français sur objectifs universitaires, en particulier lorsqu’on est face à des profils d’apprenants plurilingues et mobiles. [less ▲]

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See detailDesign of a hydraulic nozzle with a narrow droplet size distribution
De Cock, Nicolas ULiege

Doctoral thesis (2017)

Nowadays, pesticides use is necessary to satisfy the growing demand for agricultural products. During pesticide spray application, the agricultural mixture containing the active ingredient is fragmented ... [more ▼]

Nowadays, pesticides use is necessary to satisfy the growing demand for agricultural products. During pesticide spray application, the agricultural mixture containing the active ingredient is fragmented to a cloud of droplets of various sizes and speeds. The droplet size distribution within the spray affects the efficiency of the treatment. According to the target, a specific droplet size should be used. However, hydraulic nozzles usually used in field application produce sprays with a wide droplet size distribution containing an important proportion of small or too large droplets. This results in non-optimal application and therefore losses of product into the environment. This statement conducted the research as early as in the 60’s to create the rotary atomizer. This device is able to produce narrow droplet size distribution using Plateau-Rayleigh break up mechanism. The characteristics of the produced spray by the rotary atomiser can be tuned by adjusting the rotational speed and the volumetric flow rate. Although offering agronomic and environmental qualities this has not met success for the application of plant protection products in field crops because of their cost, size and complexity. The aim of the thesis was the design of a hydraulic nozzle with the rotary atomizer qualities and without the constraints of rotating parts. Unlike the rotary atomizer which has two control variables, the developed hydraulic nozzle will have a narrower operating range, thus a specific geometry has to be design for each kind of treatment. The new hydraulic nozzle design is composed by an inlet pipe ending perpendiculary on a plate. There is a thin opening at the junction between the pipe and the plate. The edge of the plate is constituted of channels formed by structures. These channels aim to divide the liquid sheet in multiple jets. The breakup of these jets into droplets generate a narrow droplet size distribution. The thesis can been seen as a roadmap providing design tools at each step starting from the determination of an optimal droplet size according to the kind of treatment and ending with a nozzle geometry. The prediction of the optimal droplet size according to the treatment was done using integrated modelling approach of the spray transport and retention by the plant. As each spray requires a specific nozzle geometry, an analytical model of the flow on the nozzle was developed. This model allows the determination of geometry according to the desired spray. Finally, a prototype of nozzle has been built. The measurement of the spray characteristics of the prototype was realized using a developed high-speed imaging technique providing the droplet size and speed. The prototype showed results in term of narrowing of the droplet size distribution. [less ▲]

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See detailImpacts de contaminations sur la végétation et la faune du sol
Liénard, Amandine ULiege

Conference given outside the academic context (2017)

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Peer Reviewed
See detailFrom Gasoline Alley to Walt & Skeezix. Layers of Autobiography in Frank King's Comic Strip Reprints
Crucifix, Benoît ULiege

Conference (2017, November 09)

This paper focuses on Jeet Heer and Chris Ware’s D+Q reprints of Frank King’s original 1920s-1930s newspaper comic strip, suggesting that the paratext of these 21st-century editions provide an ... [more ▼]

This paper focuses on Jeet Heer and Chris Ware’s D+Q reprints of Frank King’s original 1920s-1930s newspaper comic strip, suggesting that the paratext of these 21st-century editions provide an “autobiographical reading” of the comic strip. Heer and Ware thus participate in the retrospective integration of Frank King’s comic strip within the autobiographical paradigm dominating the graphic novel. In doing so, the reprints acknowledge how King adapted to the cultural and commercial constraints of the newspaper strip to produce an indirect form of life-writing. [less ▲]

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See detailArt Brut et bande dessinée : influences, convergences et sympathies
Dejasse, Erwin ULiege

Scientific conference (2017, November 09)

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Peer Reviewed
See detail“Who Cares for those who Cared? Global Social Protection Arrangements Between Europe and Latin America”.
Vivas Romero, Maria ULiege

Conference (2017, November 09)

Belgium recently experienced an economic and political crisis. This context has reinforced the historical restrictive migratory approach while promoting policies that aim at restraining migration through ... [more ▼]

Belgium recently experienced an economic and political crisis. This context has reinforced the historical restrictive migratory approach while promoting policies that aim at restraining migration through the control of social provisions. In such an environment migrant families are categorized as an intolerable burden for the state (Lafleur and Stanek forthcoming). Evidently, these measures affected migrant family’s access to health-care, education, pension schemes and increased their unemployment rates (Castanheira et al. 2014; Pignal 2012). Nevertheless, it also drove them to diversify their resources to access social protection while negotiating them in sending, receiving and in-between countries. This paper tackles this last argument and explores the post-crisis strategies Peruvian and Colombian migrant families use to access global social protection arrangements while negotiating their access to informal and formal resources in a variety of countries in Europe and Latin America. Nonetheless, it also depicts emerging or transforming inequalities in their strategies. Global Social Protection arrangements are defined as strategies that migrants learn to put together through their life course to cope with social risks in areas such as: health-, long-term care, pensions or unemployment. Such strategies combine rights based in public welfare policies as well as market-family and community based practices. An intersectional lens (Anthias 2001) is used to explore how Andean transnational families’ ethnic, class, gender, generational positioning’s affects their strategies. The empirical data use draws from a multi-sited ethnography conducted with 15 Andean Transnational family networks over the past two years. [less ▲]

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See detailApproche par modèle de compartiments pour la modélisation des bioréacteurs
Delafosse, Angélique ULiege; Calvo, Sébastien ULiege; Toye, Dominique ULiege

Scientific conference (2017, November 09)

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See detailLa naissance médiatique de la bande dessinée (1830-1890)
Stienon, Valérie ULiege

Scientific conference (2017, November 09)

Dans quelle mesure une certaine presse, en particulier celle de la caricature, avec ses moyens graphiques, son personnel, ses techniques et les sociabilités artistiques sur lesquelles elle repose, a-t ... [more ▼]

Dans quelle mesure une certaine presse, en particulier celle de la caricature, avec ses moyens graphiques, son personnel, ses techniques et les sociabilités artistiques sur lesquelles elle repose, a-t-elle constitué un paramètre décisif dans l’émergence de l’art séquentiel au XIXe siècle, à l’entrée l’ère médiatique que l’on fait commencer dans ces mêmes années 1830 ? La BD est pleinement une création médiatique, par ses supports, ses publics, ses auteurs. Et parmi la grande diversité de paramètres concernés par cette genèse médiatique du genre, la visée humoristique serait même l’un des seuls traits stables. Il est possible d'esquisser une étude historique et générique intermédiale de la BD sous cet angle. [less ▲]

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See detailAvailable tools for the quantification of the evolution of future flood risk in Wallonia
Bruwier, Martin ULiege; Archambeau, Pierre ULiege; Pirotton, Michel ULiege et al

Conference given outside the academic context (2017)

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See detailInjection of spin-polarized current in a Ge-based magnetic device with coplanar contacts
Fourneau, Emile ULiege; Avila Osses, Jonathan ULiege; Silhanek, Alejandro ULiege et al

Poster (2017, November 09)

Electron spin injection and spin detection in magnetic materials are key features to the functionalization of electron spin polarization as a degree of freedom for both information processing and storage ... [more ▼]

Electron spin injection and spin detection in magnetic materials are key features to the functionalization of electron spin polarization as a degree of freedom for both information processing and storage. Currently, spin-dependent tunneling in magnetic junction devices is the most common approach to achieve efficient spin injection. However, many recent studies highlighted the interesting possibility to create spin-polarized currents in structures which combine a magnetic semiconductor, e.g. magnetic alloys based on group-IV semiconductors or diluted magnetic semiconductor compounds, forming a Schottky-like rectifying junction with a metallic ferromagnet. Although theoretical works have already addressed the performance of this structure by numerical simulations of the spin drift and spin diffusion equations, taking into account various characteristics of the ferromagnet (FM) / semiconductor (SC) interface such as barrier height and boundary roughness in 1D models, correlations with experimental results are scarce. This work aims at achieving spin injection with Ge-based magnetic structures using a rectifying junction in a coplanar architecture. We performed 2D numerical calculations of the spin drift and diffusion process in the direct neighborhood of a junction consisting of a Mn5Ge3 half-metallic ferromagnet acting as the injecting contact and an n-type Ge film, forming 3- and 4-terminal devices. Our results show that geometrical effects play a major role on the spin injection efficiency. Moreover, the simulations emphasize the asymmetry of spin accumulation at the FM/SC interface as well as a strong effect of the depletion layer caused by the Schottky contact junction. [less ▲]

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See detailImpact of spatio-temporal shade dynamics on wheat growth and yield, perspectives for temperate agroforestry
Artru, Sidonie ULiege; Garré, Sarah ULiege; Dupraz, Christian et al

in European Journal of Agronomy (2017)

A stumbling block to the adoption of silvoarable agroforestry systems is the lack of quantitative knowledge on the performance of different crops when competing for resources with trees. In North-Western ... [more ▼]

A stumbling block to the adoption of silvoarable agroforestry systems is the lack of quantitative knowledge on the performance of different crops when competing for resources with trees. In North-Western Europe, light is likely to be the principal limiting resource for understorey crops, and most agronomic studies show a systematic reduction of final yield as shade increases. However the intensity of the crop response depends on both the environmental conditions and the shade characteristics. This study addressed the issue by monitoring winter wheat (Triticum aestivum L.) growth, productivity and quality under artificial shade provided by military camouflage shade-netting, and using the Hi-sAFe model to relate the artificial shade conditions to those applying in agroforestry systems. The field experiment was carried out over two consecutive years (2013–14 and 2014–15) on the experimental farm of Gembloux Agro-Bio Tech, Belgium. The shade structures recreated two shade conditions: periodic shade (PS) and continuous shade (CS), with the former using overlapping military camouflage netting to provide discontinuous light through the day, and the latter using conventional shade cloth. The experiment simulated shading from a canopy of late-flushing hybrid walnut leaves above winter wheat. Shading was imposed 16 (2013–14) and 10 (2014–15) days before flowering and retained until harvest. The crop experienced full light conditions until the maximum leaf area index stage (LAImax) had been reached. In both years, LAI followed the same dynamics between the different treatments, but in 2013–2014 an attack of the take-all disease (Gaeumannomyces graminis var. tritici) reduced yields overall and prevented significant treatment effects. In season 2014–15 the decrease in global radiation reaching the crop during a period of 66 days (CS: – 61% and PS: – 43%) significantly affected final yield (CS: – 45% and PS: – 25%), mainly through a reduction of the average grain weight and the number of grain per m2. Grain protein content increased by up to 45% under the CS treatment in 2015. Nevertheless, at the plot scale, protein yield (t/ha) did not compensate for the final grain yield decrease. The Hi-sAFe model was used to simulate an agroforestry plot with two lines of walnut trees running either north-south or east-west. The levels of artificial shade levels applied in this experiment were compared to those predicted beneath trees growing with similar climatic conditions in Belgium. The levels used in the CS treatment are only likely to occur real agroforestry conditions on 10% of the cropped area until the trees are 30 years old and only with east-west tree row orientation. [less ▲]

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See detailChina’s new relations with Panama and Costa Rica are another step towards a Beijing Consensus in Central America
Wintgens, Sophie ULiege

in LSE Latin America and the Caribbean (2017)

Increased trade, aid, investment, and diplomatic engagement between China and both Costa Rica and Panama signal a more general projection of Chinese economic and political standards in international trade ... [more ▼]

Increased trade, aid, investment, and diplomatic engagement between China and both Costa Rica and Panama signal a more general projection of Chinese economic and political standards in international trade policy. [less ▲]

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See detailMémoires déclinées
Grandjean, Geoffrey ULiege; Henrard, Gaëlle

Conference given outside the academic context (2017)

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See detailLes métiers de l’enseignant chercheur : quelle professionnalisation ?
Hanzen, Christian ULiege

Scientific conference (2017, November 08)

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See detailQuelle politique agricole commune aujourd'hui?
Habran, Maxime ULiege

Conference given outside the academic context (2017)

Bilan de l'évolution de la politique agricole commune

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See detailLes arbres, ces natures sensibles : Oui, les plantes se parlent
Fauconnier, Marie-Laure ULiege

Article for general public (2017)

Marie-Laure Fauconnier, professeur ordinaire à Gembloux Agro-Bio Tech, ULg. Chimiste, elle mène des recherches dans le domaine des molécules naturelles volatiles émises par le règne végétal.

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