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See detailTowards DisNETPerf: a Distributed Internet Paths Performance Analyzer
Wassermann, Sarah ULg; Casas, Pedro; Donnet, Benoît ULg

in ACM CoNEXT Student Workshop: Heidelberg 1 décembre 2015 (2015, December)

For more than 25 years now, traceroute has demonstrated its supremacy for network-path measurement, becoming the most widely used Internet path diagnosis tool today. A major limitation of traceroute when ... [more ▼]

For more than 25 years now, traceroute has demonstrated its supremacy for network-path measurement, becoming the most widely used Internet path diagnosis tool today. A major limitation of traceroute when the destination is not controllable by the user is its inability to measure reverse paths, i.e., the path from a destination back to the source. Proposed techniques to address this issue rely on IP address spoofing, which might lead to security concerns. In this paper we introduce and evaluate DisNETPerf, a new tool for locating probes that are the closest to a distant server. Those probes are then used to collect data from the server point-of-view to the service user for path performance monitoring and troubleshooting purposes. We propose two techniques for probe location, and demonstrate that the reverse path can be measured with very high accuracy in certain scenarios. [less ▲]

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See detailL'agriculture devra s'adapter aux changements climatiques
Minet, Julien ULg

Article for general public (2015)

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See detailHunting with trapezes at Bazel-Sluis: the results of a functional analysis
Tomasso, Sonja; Rots, Veerle ULg; Perdaen, Yves et al

in Notae Praehistoricae (2015), 35

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See detailEnvironmental impacts of phosphoric acid production using di-hemihydrate process: a Belgian case study
Belboom, Sandra ULg; Szöcs, Carl; Léonard, Angélique ULg

in Journal of Cleaner Production (2015), 108

This paper undertakes an environmental evaluation of phosphoric acid production, using industrial data from Prayon SA in Belgium. Phosphoric acid is produced using the wet di-hemihydrate process also ... [more ▼]

This paper undertakes an environmental evaluation of phosphoric acid production, using industrial data from Prayon SA in Belgium. Phosphoric acid is produced using the wet di-hemihydrate process also called Central Prayon process. Both grades of phosphoric acid are evaluated: fertilizer and purified grades. Specificities of this plant are highlighted and improvements of the process in terms of energy and facilities integration through years are quantified as environmental benefits. The implementation on site of two sulphuric acid production facilities and their energetic integration allow a reduction of climate change impact of 80%. Results also show the importance of phosphogypsum valorisation which is sold for the main part in this case study. Concerning the purified grade, this specific process has been compared to the thermal process, using Best Available Techniques (BAT) values for the modelling. It shows a reduced environmental impact for the wet process in the majority of categories studies. [less ▲]

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See detailL'astronomie dans le monde - 12/2015
Manfroid, Jean ULg

Article for general public (2015)

VFTS 352 - Une nouvelle composante de laVoie lactée - Érosion de l’atmosphère de Mars - Disque autour d’une naine blanche - Éruption du trou noir Mrk 335 - Comète 67P - Sucre et alcool cométaires ... [more ▼]

VFTS 352 - Une nouvelle composante de laVoie lactée - Érosion de l’atmosphère de Mars - Disque autour d’une naine blanche - Éruption du trou noir Mrk 335 - Comète 67P - Sucre et alcool cométaires - Géantes rouges magnétiques [less ▲]

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See detailContraception et risque carcinologique
BELIARD, Aude ULg

in Réalités en Gynécologie-Obstétrique (2015), 179

Hormonal contraception is used by millions of women worldwide for many years. Is there any impact on cancer risks (breast, ovarian, endometrial, cervical, liver, and colon cancer)? On the other hand, as a ... [more ▼]

Hormonal contraception is used by millions of women worldwide for many years. Is there any impact on cancer risks (breast, ovarian, endometrial, cervical, liver, and colon cancer)? On the other hand, as a result of advances in cancer therapy, women within the reproductive-aged group are more likely to survive cancer and be interested to procreate or to delay pregnancy. Which method of contraception can be proposed to this special population of cancer patients? [less ▲]

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See detailPréfixes & suffixes de l’humain : entre fiction & philosophie
Guesse, Carole ULg

in Acta Fabula : Revue des Parutions en Théorie Littéraire (2015), 16(8),

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See detailComment je traite ... A propos du positionnement des inhibiteurs de la DPP-4 (gliptines) dans le traitement du diabète de type 2
SCHEEN, André ULg

in Revue Médicale de Liège (2015), 70

Summary : Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are more and more prominent medications in the management of type 2 diabetes (T2D), with five molecules commercialized and as many fixed-dose ... [more ▼]

Summary : Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are more and more prominent medications in the management of type 2 diabetes (T2D), with five molecules commercialized and as many fixed-dose combinations with metformin. After failure of metformin monotherapy, gliptins compete with old medications such as sulphonylureas, on the one hand, or with new oral antidiabetic agents such as inhibitors of renal sodium-glucose cotransporters type 2 (SGLT2) (gliflozines), on the other hand. Another alternative is the use of an incretin mimetic (agonist of glucagon-like peptide-1 receptors, to be injected subcutaneously) rather than an incretin enhancer such as a gliptin, before considering insulin therapy. This article analyses the arguments in favour of DPP-4 inhibitors. We will mainly consider the use of gliptins in patients with recently diagnosed T2D, in elderly and frail patients and in those with chronic kidney disease. To illustrate the discussion, we will analyze the results of both interventional and observational studies with vildagliptin. Obviously, these various groups of patients represent a large proportion of T2D population. [less ▲]

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See detailLes pratiques d’écriture comme stratégies ? Débat(s), usage(s) & méthodologie(s) autour d’un concept
Daubercies, Laurence ULg

in Acta Fabula : Revue des Parutions en Théorie Littéraire (2015), 16(8),

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See detailThe protective effects of free wheel-running against cocaine psychomotor sensitization persist after exercise cessation in C57BL/6J mice
Lespine, Louis-Ferdinand ULg; Tirelli, Ezio ULg

in Neuroscience (2015), 310

Previous literature suggests that free access to a running wheel can attenuate the behavioral responsiveness to addictive drugs in rodents. In a few studies, wheel-running cessation accentuated drug ... [more ▼]

Previous literature suggests that free access to a running wheel can attenuate the behavioral responsiveness to addictive drugs in rodents. In a few studies, wheel-running cessation accentuated drug responsiveness. Here, we tested whether free wheel-running cessation is followed by (1) an accentuation or (2) an attenuation of cocaine psychomotor sensitization, knowing that no cessation of (continuous) wheel-running is associated with an attenuation of cocaine responsiveness. Male C57BL/6J mice, aged 35 days, were housed singly either with (exercising mice) or without (non-exercising mice) a running wheel. At the end of a period of 36 days, half of the exercising mice were deprived of their wheel whereas the other half of exercising mice kept their wheel until the end of experimentation (which lasted 85 days). The non-exercising mice were housed without wheel throughout experimentation. Testing took place 3 days after exercise cessation. After 2 once-daily drug-free test sessions, mice were tested for initiation of psychomotor sensitization over 13 once-daily injections of 8 mg/kg cocaine. Post-sensitization conditioned activation (saline challenge) and long-term expression of sensitization were assessed 2 or 30 days after the last sensitizing injection (same treatments as for initiation of sensitization), respectively. Exercising mice and mice undergoing wheel-running cessation exhibited comparable degrees of attenuation of all cocaine effects in comparison with the continuously non-exercising mice, which showed the greatest effects. Thus, the efficaciousness of wheel-running at attenuating cocaine sensitization not only resisted to exercise cessation but also was unambiguously persistent (an important effect rarely reported in previous literature). [less ▲]

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See detailValeurs ajoutées des archives ouvertes : ORBi de l’université de Liège
Thirion, Paul ULg

in i2D : Information, Données et Documents : Pratiques ET Recherche (2015), 2015(4), 61-62

En 2008, l’Université de Liège appuie son répertoire institutionnel Open Repository and Bibliography (ORBi) sur le « mandat à la liégeoise » rendant obligatoire le dépôt des publications qu’elle assortit ... [more ▼]

En 2008, l’Université de Liège appuie son répertoire institutionnel Open Repository and Bibliography (ORBi) sur le « mandat à la liégeoise » rendant obligatoire le dépôt des publications qu’elle assortit d’un incitant puissant puisque seules les publications déposées sur ORBi sont prises en compte dans l’évaluation au sein de cette université (nominations, promotions, attributions de crédits, etc.). <br>Pour atteindre le succès observé, un effort particulier a été apporté à l'implémentation se "services à valeur ajoutée" pour l'auteur, l'institution et plus globalement le citoyen et la communauté scientifique. [less ▲]

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See detailInsulinosensibilisateurs (metformine/glitazones) : niveau de preuve et controverse
SCHEEN, André ULg

in Médecine des Maladies Métaboliques (2015), 9

Summary Because of the deleterious role attributed to insulin resistance, insulin sensitizing agents should theoretically reduce the incidence of cardiovascular complications in type 2 diabetes. In the ... [more ▼]

Summary Because of the deleterious role attributed to insulin resistance, insulin sensitizing agents should theoretically reduce the incidence of cardiovascular complications in type 2 diabetes. In the UKPDS, metformin reduced the risk of myocardial infarction and cardiovascular mortality in a rather small group of recently diagnosed patients at a low cardiovascular risk. These results deserve confirmation in a larger study with patients a high cardiovascular risk. Glitazones, as more specific insulin sensitizers, raised much hope. However, rosiglitazone fell from its pedestal after the suspicion of an increased risk of myocardial infarction. In PROactive among patients at high cardiovascular risk, pioglitazone gave positive but questionable results: statistical significance was not reached regarding the large composite primary endpoint, but well regarding the prespecified more focused principal secondary endpoint or in various post-hoc analyses. Thus, even if data with insulin sensitizers appear globally rather promising, evidence is rather weak, therefore leading to recurrent controversy. [less ▲]

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See detailSait-on pourquoi la voix des garçons mue?
Finck, Camille ULg

Article for general public (2015)

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See detailTerritoires périurbains. Développement, enjeux et perspectives dans les pays du Sud.
Bogaert, Jan ULg; Halleux, Jean-Marie ULg

Book published by Presses agronomiques de Gembloux (2015)

Nous assistons actuellement au peuplement des zones périurbaines de la planète par des centaines de millions d’individus. Cette évolution pose de redoutables problèmes et des difficultés inédites pour les ... [more ▼]

Nous assistons actuellement au peuplement des zones périurbaines de la planète par des centaines de millions d’individus. Cette évolution pose de redoutables problèmes et des difficultés inédites pour les politiques publiques. Si les effets de la périurbanisation sont relativement bien connus dans les pays du Nord, les analyses dédiées aux pays du Sud sont bien moins développées. L’ouvrage « Territoires périurbains : développement, enjeux et perspectives dans les pays du Sud » permet de lever un coin du voile sur cette problématique et sur les grands défis que la périurbanisation pose pour le Sud en général et pour l’Afrique centrale en particulier. L’ouvrage débute en cherchant à clarifier ce qu’il faut exactement entendre par « territoire périurbain ». À la suite de cette mise en contexte, il se poursuit par cinq parties organisées autour des problématiques des ressources naturelles, de la sécurité alimentaire, de la santé publique, des services publics et de l’aménagement des territoires. Pour chacune de ces problématiques, des chercheurs spécialisés issus de disciplines variées apportent des contributions qui, tout en soulignant l’ampleur des défis, permettent la mise en avant de solutions innovantes pour améliorer la gouvernance et le bien-être des populations. Cet ouvrage s’adresse d’abord aux chercheurs préoccupés par les défis du développement. En parallèle, par les pistes pour l’action publique qu’il esquisse, il ne manquera pas d’également intéresser les décideurs et les praticiens qui opèrent dans le contexte des territoires périurbains des pays du Sud. [less ▲]

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See detailImaging in Disorder of Self-Consciousness
Martial, Charlotte ULg

Conference (2015, December)

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See detailCarbon substrate utilization and microbial biomass in European forest soils are related to tree species diversity
Carnol, Monique ULg; Baeten, Lander; Bosman, Bernard ULg et al

Poster (2015, December)

Tree species influence biogeochemical cycling through element deposition (throughfall, litterfall), root decomposition and exudates, and through their influence on the microbial activities in the soil ... [more ▼]

Tree species influence biogeochemical cycling through element deposition (throughfall, litterfall), root decomposition and exudates, and through their influence on the microbial activities in the soil. Yet, the effect of mixing tree species on soil functioning is unclear, in particular concerning the microbial diversity and activity in soils. Here we synthesize results from the Exploratory Platform of the FunDivEUROPE project (http://www.fundiveurope.eu/). This network of 209 comparative plots covering tree diversity levels of 1 to 5 species was established in existing mature forests in 6 European regions. These six focal regions represent a gradient of major European forest types from boreal to Mediterranean forests. The aims of this study were to determine the soil microbial biomass and metabolic diversity of soil bacteria for these 6 European forest regions, presenting each a tree species richness gradient and to analyse the impact of tree species richness and the role of other controlling factors. We analysed the relation between tree species diversity, the proportion of coniferous tree species and soil factors (pH, soil organic carbon, water soluble carbon and nitrogen) and the carbon substrate utilisation pattern of soil bacteria (BIOLOG Ecoplate), soil microbial biomass (fumigation-extraction), hot water carbon and nitrogen in the forest floor and the upper mineral soil horizon (linear mixed models, GLM for multivariate abundance data, discriminant correspondence analysis). Mean values of microbial biomass carbon ranged from 3264 (Italy) to 8717 (Finland) mg kg-1 in the forest floor and from 465 (Italy) to 3748 (Finland) mg kg-1 in the mineral soil. Statistical models predicted microbial biomass to increase in both soil layers by 7-8% with each step increase in tree diversity. Increased proportion of conifers was linked to a decrease in the number of carbon substrates used by soil bacteria. The types of carbon sources used were dependent on region, proportion of conifers, soil pH and water-soluble carbon and nitrogen. [less ▲]

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