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See detailA Comparison of Micro-objective Non-parametric Statistical Matching Techniques for the Integration of Different Survey Data
Eftekhar, Hamed ULg; Cools, Mario ULg

in Proceedings of the 96th Annual Meeting of the Transportation Research Board (2017)

Lack of information is often reported as one of the main study limitations in transport research. Other data sources provide an important opportunity, as the information from these data sources might be ... [more ▼]

Lack of information is often reported as one of the main study limitations in transport research. Other data sources provide an important opportunity, as the information from these data sources might be fully exploited when they are integrated using an appropriate mathematical framework. This paper determines which data integration techniques can be adopted in the context of road safety, and which criteria should be used to assess the quality of the integrated dataset. The paper contributes to the literature by providing a comparison of different techniques that allow the tabulation of the joint micro-data. To compare the suitability of different Statistical Matching techniques, data from the 2012 Belgium Road Safety Institute (BRSI) Attitude Survey and data from the 2010 Belgian National Household Travel Survey (BELDAM) are integrated. In particular, the socio-economic factor "Income" is being matched to the BRSI Attitude Survey data. The paper discusses and compares different non-parametric micro-objective Statistical Matching techniques, in which the “Income” variable from the BELDAM survey was added to the BRSI Attitude Survey. Based on similarity/dissimilarity measures, the Rank hot-deck Statistical Matching yielded the best result, which is in line with the existing literature. Moreover, from the results, it can be concluded that statistical data matching is a practically applicable technique, which can help overcome the lack of additional information. Further research should focus on using the integrated datasets with an attempt of expanding the scope of variables, and explicitly testing for omitted variable bias. [less ▲]

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See detailBlending of Radial HF Radar Surface Current and Model Using ETKF Scheme For The Sunda Strait
Subekti Mujiasih, ULg; Riyadi, Mochammad; Wandono, Dr et al

Conference (2017)

Preliminary study of data blending of surface current for Sunda Strait-Indonesia has been done using the analysis scheme of the Ensemble Transform Kalman Filter (ETKF). The method is utilized to combine ... [more ▼]

Preliminary study of data blending of surface current for Sunda Strait-Indonesia has been done using the analysis scheme of the Ensemble Transform Kalman Filter (ETKF). The method is utilized to combine radial velocity from HF Radar and u and v component of velocity from Global Copernicus - Marine environment monitoring service (CMEMS) model. The initial ensemble is based on the time variability of the CMEMS model result. Data tested are from 2 CODAR Seasonde radar sites in Sunda Strait and 2 dates such as 09 September 2013 and 08 February 2016 at 12.00 UTC. The radial HF Radar data has a hourly temporal resolution, 20-60 km of spatial range, 3 km of range resolution, 5 degree of angular resolution and spatial resolution and 11.5-14 MHz of frequency range. The u and v component of the model velocity represents a daily mean with 1/12 degree spatial resolution. The radial data from one HF radar site is analyzed and the result compared to the equivalent radial velocity from CMEMS for the second HF radar site. Error checking is calculated by root mean squared error (RMSE). Calculation of ensemble analysis and ensemble mean is using Sangoma software package. The tested R which represents observation error covariance matrix, is a diagonal matrix with diagonal elements equal 0.05, 0.5 or 1.0 m 2 /s 2 . The initial ensemble members comes from a model simulation spanning a month (September 2013 or February 2016), one year (2013) or 4 years (2013-2016). The spatial distribution of the radial current are analyzed and the RMSE values obtained from independent HF radar station are optimized. It was verified that the analysis reproduces well the structure included in the analyzed HF radar data. More importantly, the analysis was also improved relative to the second independent HF radar site. RMSE of the improved analysis is better than first HF Radar site Analysis. The best result of the blending exercise was obtained for observation error variance equal to 0.05 m 2 /s 2 . This study is still preliminary step, but it gives promising result for bigger size of data, combining other model and further development [less ▲]

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See detailProteomic signatures reveal a dualistic and clinically relevant classification of anal canal carcinoma
Herfs, Michael ULg; Longuespée, Rémi ULg; Quick, Charles et al

in Journal of Pathology (The) (2017), 241

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See detailAnnexe A : Benchmark / Benchmark et analyse des écarts pour la planification d'urgence externe relative au risque Seveso
Verhaegen, Marlies; Fallon, Catherine ULg; Thiry, Aline ULg et al

Report (2017)

Ce rapport de recherche – annexe A du rapport final - présente les résultats du benchmark pour les cinq pays suivants : l’Allemagne, le Danemark, la France, la Hollande et la Suisse. L’objectif de ce ... [more ▼]

Ce rapport de recherche – annexe A du rapport final - présente les résultats du benchmark pour les cinq pays suivants : l’Allemagne, le Danemark, la France, la Hollande et la Suisse. L’objectif de ce deuxième volet de la recherche a été de fournir une vue globale de la manière dont la planification d’urgence Seveso externe est organisée dans les pays voisins que ce soit au niveau de la planification d’urgence stratégique, de la formation et des exercices, du matériel et de la communication. Une étude de la littérature (règlementation, littérature scientifique, rapports d’évaluation, etc.) a été complétée par des entretiens téléphoniques. Le premier objectif de cette phase de la recherche a été de mettre en évidence des exemples de bonnes pratiques dans les domaines où des difficultés/manquements ont été identifiés en Belgique. Pour ce faire, ce deuxième volet s’est déroulé de manière transversale par rapport à l’enquête menée en Belgique (Mesydel – voir annexe B). Cette phase internationale a permis d’ouvrir l’horizon d’analyse en incluant une dimension comparative entre les pratiques relatives à la planification d’urgence externe en matière de risques Seveso en Belgique et les pratiques relatives au même domaine dans cinq pays voisins. [less ▲]

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See detailAnnexe B: analyse du Mesydel / Benchmark et analyse des écarts pour la planification d'urgence externe relative au risque Seveso
Thiry, Aline ULg; Verhaegen, Marlies; Fallon, Catherine ULg et al

Report (2017)

Ce rapport de recherche – annexe du rapport final intégré - présente l’analyse des réponses aux deux tours du questionnaire en ligne Mesydel. Sur base des éléments récoltés lors des entretiens ... [more ▼]

Ce rapport de recherche – annexe du rapport final intégré - présente l’analyse des réponses aux deux tours du questionnaire en ligne Mesydel. Sur base des éléments récoltés lors des entretiens exploratoires avec des personnes ressources (premier volet de la recherche), l’équipe de recherche a réalisé un Mesydel - questionnaire en ligne selon la méthodologie Delphi - avec divers acteurs industriels et acteurs publics en Wallonie, en Flandre et à Bruxelles. Un des objectifs de cette phase participative a été de permettre aux acteurs directement concernés de s’exprimer sur le mode de l’écrit et donc de favoriser la prise en compte des connaissances, idées, expériences et appréciations de ceux-ci. Les questions ont été rédigées par les chercheurs sur base des résultats obtenus lors des entretiens. Ce travail de rédaction des questions est un travail de conceptualisation important qui a été réalisé par l’équipe de recherche. Le questionnaire a abordé les différentes dimensions : la planification d’urgence, la formation et les exercices, le matériel et la communication envers le public. Les questions essentiellement qualitatives invitent les participants à se positionner par rapport aux éléments, tout en laissant la possibilité d’ouvrir la discussion à de nouvelles dimensions importantes. Un des objectifs est de mettre en évidence les difficultés/manquements identifiés par ces différents acteurs en Belgique et d’envisager les solutions éventuelles. Le second tour du questionnaire a eu pour objectif de valider les éléments récoltés lors du premier tour. [less ▲]

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See detailDepth-speci c Fluctuations of gene expression and protein abundance modulate the photophysiology in the seagrass Posidonia oceanica
Procaccini, Gabriele; Ruocco, Miriam; Marin-Guirao, Lazaro et al

in Scientific Reports (2017), 7(42890), 1-14

We present the results of a multiple organizational level analysis conceived to identify acclimative/ adaptive strategies exhibited by the seagrass Posidonia oceanica to the daily uctuations in the light ... [more ▼]

We present the results of a multiple organizational level analysis conceived to identify acclimative/ adaptive strategies exhibited by the seagrass Posidonia oceanica to the daily uctuations in the light environment, at contrasting depths. We assessed changes in photophysiological parameters, leaf respiration, pigments, and protein and mRNA expression levels. The results show that the diel oscillations of P. oceanica photophysiological and respiratory responses were related to transcripts and proteins expression of the genes involved in those processes and that there was a response asynchrony between shallow and deep plants probably caused by the strong di erences in the light environment. The photochemical pathway of energy use was more e ective in shallow plants due to higher light availability, but these plants needed more investment in photoprotection and photorepair, requiring higher translation and protein synthesis than deep plants. The genetic di erentiation between deep and shallow stands suggests the existence of locally adapted genotypes to contrasting light environments. The depth-speci c diel rhythms of photosynthetic and respiratory processes, from molecular to physiological levels, must be considered in the management and conservation of these key coastal ecosystems. [less ▲]

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See detailIntentionalisme et phénoménologie de l'intentionnalité
Seron, Denis ULg

in Etudes Phénoménologiques - Phenomenological Studies (2017), 1

This paper presents an argument in favor of a “phenomenological” approach to intentionality. This approach, as I see it, involves the view that intentional facts are better expressed with the help of ... [more ▼]

This paper presents an argument in favor of a “phenomenological” approach to intentionality. This approach, as I see it, involves the view that intentional facts are better expressed with the help of appearance words (“seems”, “appears”, “is similar to”, etc.). By contrast, what I call the “intentionalist approach” assumes that intentional facts are better expressed by intentional verbs. The argument is as follows. First, it is well-known that the use of intentional verbs to express typically intentional facts generates anomalies with respect to existential generalization, substitution of identicals, and the principle of excluded middle. Secondly, I argue that the use of appearance words does not generate the same anomalies, which suggests that appearance words are more appropriate to describe intentional facts. This, I conclude, is an argument for preferring the phenomenological to the intentionalist approach to intentionality. [less ▲]

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See detailPrès de 20 ans après sa grave crise sanitaire, où en est la hêtraie ardennaise?
Claessens, Hugues ULg; Claessens, Laureline ULg; Longrée, Charlotte et al

in FORÊT.NATURE (2017), 142(Janvier-Février-Mars), 30-36

La "maladie du hêtre", apparue au début des années 2000 suite au coup de froid de 1998, détruisit plus d'un million de mètres cubes de bois. Un suivi d'une vingtaine d'années a permis de faire le point ... [more ▼]

La "maladie du hêtre", apparue au début des années 2000 suite au coup de froid de 1998, détruisit plus d'un million de mètres cubes de bois. Un suivi d'une vingtaine d'années a permis de faire le point sur son évolution et son impact actuel, et de proposer quelques recommandations pour la gestion de la hêtraie. [less ▲]

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See detailRIP3 antagonizes a TSC2-mediated pro-survival pathway in glioblastoma cell death.
Fettweis, Grégory ULg; Di Valentin, Emmanuel ULg; L'homme, Laurent et al

in Biochimica et Biophysica Acta (2017)

Glioblastomas are the deadliest type of brain cancer and are frequently associated with poor prognosis and a high degree of recurrence despite removal by surgical resection and treatment by chemo- and ... [more ▼]

Glioblastomas are the deadliest type of brain cancer and are frequently associated with poor prognosis and a high degree of recurrence despite removal by surgical resection and treatment by chemo- and radio-therapy. Photodynamic therapy (PDT) is a treatment well known to induce mainly necrotic and apoptotic cell death in solid tumors. 5-Aminolevulinic acid (5-ALA)-based PDT was recently shown to sensitize human glioblastoma cells (LN-18) to a RIP3 (Receptor Interacting Protein 3)-dependent cell death which is counter-acted by activation of autophagy. These promising results led us to investigate the pathways involved in cell death and survival mechanisms occurring in glioblastoma following PDT. In the present study, we describe a new TSC2 (Tuberous Sclerosis 2)-dependent survival pathway implicating MK2 (MAPKAPK2) kinase and 14-3-3 proteins which conducts to the activation of a pro-survival autophagy. Moreover, we characterized a new RIP3/TSC2 complex where RIP3 is suggested to promote cell death by targeting TSC2-dependent survival pathway. These results highlight (i) a new role of TSC2 to protect glioblastoma against PDT-induced cell death and (ii) TSC2 and 14-3-3 as new RIP3 partners. [less ▲]

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See detailRecovery of fibers and biomethane from banana peduncles biomass through anaerobic digestion
AwedemWobiwo, Florent; Korangi Alleluya, Virginie; Happi Emaga, Thomas et al

in Energy for Sustainable Development (2017), 37

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See detailFuture-oriented mental time travel in individuals with disordered gambling.
Noel, Xavier; Saeremans, Melanie; Kornreich, Charles et al

in Consciousness & Cognition (2017), 49

This study investigated the ability of individuals with disordered gambling to imagine future events. Problem gamblers (n=35) and control participants (n=35) were asked to imagine positive and negative ... [more ▼]

This study investigated the ability of individuals with disordered gambling to imagine future events. Problem gamblers (n=35) and control participants (n=35) were asked to imagine positive and negative future events for three temporal distances (one week, one year, 5-10years). Then, a variety of phenomenological aspects of their future thoughts (e.g., sensory and contextual details, autonoetic consciousness) were rated. Compared to control subjects, problem gamblers generated fewer positive and negative events across all temporal distances, an impairment that was correlated to verbal fluency scores. Furthermore, problem gamblers rated imagined events as containing fewer sensory and contextual details, and lacking autonoetic consciousness. These findings demonstrate that problem gambling is associated with a reduced future-oriented mental time travel ability and, in particular, with diminished autonoetic consciousness when imagining future events. [less ▲]

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See detailOn Sustainable Aquaculture
Tran Thi Nang, Thu; Lebailly, Philippe ULg

in Oceanography & Fisheries (2017), 1(3), 001-002

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See detailAlain au prisme de l’ontologie phénoménologique. Relectures croisées d'Alain et de Sartre
Cormann, Grégory ULg

in Depraz, Natalie (Ed.) Alain philosophe rouennais (2017)

Parmi les grands représentants de la « génération 1905 », selon l’expression de J.-F. Sirinelli, Sartre passe pour celui qui a refusé l’enseignement d’Alain alors que des penseurs aussi différents qu’Aron ... [more ▼]

Parmi les grands représentants de la « génération 1905 », selon l’expression de J.-F. Sirinelli, Sartre passe pour celui qui a refusé l’enseignement d’Alain alors que des penseurs aussi différents qu’Aron, Canguilhem ou Hyppolite acceptaient, au moins pour un temps, l’enseignement du maître. Cette appréciation expéditive ne fait droit ni à ce qu’on sait aujourd’hui des premières tentatives philosophiques de Sartre ni au travail inlassable de relecture d’Alain que Sartre aura mené, en sous-main, tout au long de sa trajectoire intellectuelle. Dans cet article, on procédera dès lors, d’une part, au repérage de l’influence d’Alain dans une série de textes, souvent posthumes, qui passent pour des textes préparatoires aux grandes œuvres. On montrera, d’autre part, que cette influence d’Alain s’insinue jusqu’au cœur de l’ontologie phénoménologique de Sartre, dans L’être et le néant, puis dans les prolongements que Sartre y a donnés dans ses psychanalyses existentielles. Au total, on montrera que la plupart des interprétations récentes de Sartre (Coorebyter, Breeur, Gély, Giovannangeli, J. Simont, etc.), depuis une dizaine d’années, se resserrent autour de la relation largement insoupçonnée que l’ontologie phénoménologique sartrienne entretient avec la pensée d’Alain. [less ▲]

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See detailPond drying cues and their effects on growth and metamorphosis in a fast developing amphibian
Székely, Diana ULg; Denoël, Mathieu ULg; Székely, Paul et al

in Journal of Zoology (2017)

The hydroperiod of breeding habitats imposes a strong selection on amphibians and pond-breeding species usually exhibit a high degree of plasticity in the duration of larval period. However, the potential ... [more ▼]

The hydroperiod of breeding habitats imposes a strong selection on amphibians and pond-breeding species usually exhibit a high degree of plasticity in the duration of larval period. However, the potential for phenotypic plasticity in fast developing species was investigated only in a small number of anurans, and the specific response to environmental cues such as low water versus decreasing water level, as well as the effects of such cues on particular developmental stages, are even less understood. In this context, we investigated the plastic response to pond desiccation in a neotropical species (Ceratophrys stolzmanni) by raising tadpoles in three water level treatments: constant high, constant low and decreasing. The growth rates were the highest reported for amphibian tadpoles (up to 0.3g/day) and the time to metamorphosis was short in all treatments, with the fastest developing tadpole metamorphosing in only 16 days after egg deposition. Individuals from the constant high water level treatment had a higher growth rate than those in the other two treatments, whereas decreasing and constant low water levels had similar effects on development, speeding up metamorphosis. In turn, this involved a cost as these tadpoles had a lower body size and mass at metamorphosis than the ones raised in constant high water levels. The final stages of metamorphosis, when tadpoles are the most vulnerable, were shorter in tadpoles exposed to a decreasing water level, allowing them to leave water quickly. Our experiment demonstrates that phenotypic plasticity is maintained even in environments devoid of permanent aquatic habitats. Ceratophryd tadpoles are able to shorten their developmental time when they perceive a risk of desiccation and react similarly to cues coming from the two unfavorable water conditions showing their adaptation to ephemeral and unpredictable breeding habitats. [less ▲]

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See detailCooking Has Variable Effects on the Fermentability in the Large Intestine of the Fraction of Meats, Grain Legumes, and Insects That Is Resistant to Digestion in the Small Intestine in an in Vitro Model of the Pig’s Gastrointestinal Tract
POELAERT, Christine ULg; Despret, Xavier; Sindic, Marianne ULg et al

in Journal of Agricultural and Food Chemistry (2017), 65

This study aimed to evaluate the fermentation in the large intestine of indigestible dietary protein sources from animal, insect, and plant origin using an in vitro model of the pig’s gastrointestinal ... [more ▼]

This study aimed to evaluate the fermentation in the large intestine of indigestible dietary protein sources from animal, insect, and plant origin using an in vitro model of the pig’s gastrointestinal tract. Protein sources were used raw and after a cooking treatment. Results showed that the category of the ingredient (meats, insects, or grain legumes) exerts a stronger impact on enzymatic digestibility, fermentation patterns, and bacterial metabolites such as short-chain fatty acids (SCFA) and hydrogen sulfide (H2S) than the cooking treatment. The digestibility and the fermentation characteristics of insects were more affected by the cooking procedure than the other categories. Per gram of consumed food, ingredients from animal origin, namely, meats and insects, were associated with fewer fermentation end-products (gas, H2S, SCFA) than ingredients from plant origin, which is related to their higher small intestinal digestibility. [less ▲]

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See detailTemperature Preference and Sex Differentiation in African Catfish, Clarias gariepinus
Santi, Saïdou; Rougeot, Carole ULg; Toguyeni, Aboubacar et al

in Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology (2017)

The African catfish Clarias gariepinus has a genetic sex determination system in which high temperature induces masculinization. The thermosensitive period for sex differentiation is short and occurs very ... [more ▼]

The African catfish Clarias gariepinus has a genetic sex determination system in which high temperature induces masculinization. The thermosensitive period for sex differentiation is short and occurs very early (from 6 to 8 days posthatching [dph]). As young juveniles can encounter high masculinizing temperature (36.5°C) in African water points, we aimed to determine the thermal preference of sexually undifferentiated juveniles and investigate if they spontaneously move toward high masculinizing temperature. Experiments were carried out in an environmental continuum (28–28–28°C and 28–32–36.5°C) made up of three 50-L aquariums connected together. Four hundred larvae from 10 different full-sib progenies were reared successively from 2 to 14 dph in these facilities. Before and after thermal treatments, fish were reared at 28°C until sex ratio determination at 70 dph. In the control continuum, fish were nearly equally distributed in the three compartments. Conversely, in the thermal continuum, compartment occupation significantly differed with progeny and period. During the highly thermosensitive period, two of five progenies significantly preferred (54.7% and 39.8% occupation) the 36.5°C compartment. All tested progenies reared in thermal continuum and separated 36.5°C aquarium showed a skewed sex ratio toward the male phenotype (78–100%). Nevertheless, no correlation was found between 36.5°C compartment occupation and sex ratio in thermal continuum groups. As masculinization temperature could be encountered in African water points during the spawning season, we discussed the adaptive advantage for the African catfish to display a sex differentiation process controlled by a temperature effect. [less ▲]

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See detailFirst report of the bee louse Braula schmitzi (Diptera: Braulidae) in apiaries of the “Los Chillos” Valley, Province of Pichincha, Ecuador
Zapata-Carvajal, N; Cherrez-Neacato, A; Martin-Solano, S et al

in Journal of Apicultural Research (2017)

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See detailPhytotoxic activity and chemical composition of Cassia absus seeds and aerial parts
Zribi, Ines; Sbai, H.; Ghezal, N. et al

in Natural Product Research (2017)

The present study was conducted to assess the phytotoxic potential and the phytochemical composition of Cassia absus. Aqueous extracts caused significant reduction of root growth of Lactuca sativa. Seed ... [more ▼]

The present study was conducted to assess the phytotoxic potential and the phytochemical composition of Cassia absus. Aqueous extracts caused significant reduction of root growth of Lactuca sativa. Seed extract was more effective than aerial part extract. Successive extractions of this plant were performed using solvents with increasing polarities. The methanolic seed extract exerted strong phytotoxic effect on seedling growth, followed by petroleum ether extract of the aerial part. The phytochemical investigation showed that among the organic extracts, methanol extracts of seeds and aerial parts contained the highest amounts of total phenolics and proanthocyanidins. Seeds were rich in linoleic acid followed by palmitic acids. Palmitic, stearic and arachidic acids were the major fatty acids in aerial parts. HPLC-DAD analysis of the methanolic extracts revealed the presence of luteolin in C. absus aerial parts. [less ▲]

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