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See detailImpact of Transport and Dynamical Processes Upon Stellar Oscillation Frequencies
Goupil, M. J.; Dupret, Marc-Antoine ULg

in EAS Publications Series (2007)

In order to prepare the theoretical interpretation of the oscillation frequencies detected by CoRoT, comparisons of results from standard stellar models by the ESTA group have proven to be very useful ... [more ▼]

In order to prepare the theoretical interpretation of the oscillation frequencies detected by CoRoT, comparisons of results from standard stellar models by the ESTA group have proven to be very useful. The next issue which is briefly addressed here is ``what are the additional physical processes that must be included in stellar models computed with different evolutionary codes for the next comparison exercises?'' We therefore discuss the impact on oscillation frequencies of several physical processes which are still poorly understood and/or poorly modelled but cannot be fully discarded. [less ▲]

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See detailThe impact of transport policies on railroad intermodal freight competitiveness – The case of Belgium
Santos, Bruno F.; Limbourg, Sabine ULg; Carreira, Joana Silva

in Transportation Research. Part D : Transport and Environment (in press)

This paper discusses the impact of three freight transport policies aiming to promote railroad intermodal transport in Europe, and examines the case of Belgium as a testing ground. These policies consist ... [more ▼]

This paper discusses the impact of three freight transport policies aiming to promote railroad intermodal transport in Europe, and examines the case of Belgium as a testing ground. These policies consist in subsidizing intermodal transport operations (such as in Belgium, to stimulate rail transport), internalizing external costs (as recommended by the European Union in order to foster cleaner modes), and adopting a system perspective when optimizing the location of inland intermodal terminals. The study proposes an innovative mixed integer intermodal freight location-allocation model based on hub-location theory and deals with non-linear transport costs in order to replicate economies of distance. Our analysis suggests that subsidizing has a significant impact on the volumes transported by intermodal transport, and, to a lesser extent, that optimizing terminal location increases the competitiveness of intermodal transport. On the other hand, according to our assumptions, internalizing external costs can negatively impact the promotion of intermodality. This finding indicates that innovative last-mile transports are needed in order to reduce the external impacts of drayage operations. [less ▲]

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See detailImpact of two novel mutations of calcium sensing receptor (CaSR) gene on calcium metabolism : two clinical case reports
Livadariu, E.; Auriemma, R. S.; Rydlewski, C. et al

in Endocrine Abstracts - 13th European Congress of Endocrinology (2011)

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See detailImpact of uncertainty in climate forcing on projections of the West Antarctic ice sheet over the 21st and 22nd centuries
Payne, A.J.; Cornford, S.L.; Martin, D.F. et al

E-print/Working paper (2013)

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See detailImpact of uranium mining and processing on the environment of mountainous areas of Kyrgyzstan
Torgoev, Isakbek; Aleshyn, U; Havenith, Hans-Balder ULg

in Uranium in the Aquatic Environment (2002)

Abstract: In this report the results of analysis of modern geo-ecological situation in areas of uranium mining and milling in the territory of Kyrgyzstan are presented. Major threats for the mountain ... [more ▼]

Abstract: In this report the results of analysis of modern geo-ecological situation in areas of uranium mining and milling in the territory of Kyrgyzstan are presented. Major threats for the mountain environment and citizens which are connected to mining and processing of the uranium are due to the contamination of the hydrosphere by radio nuclides, and due to the stimulation of dangerous natural and technological processes (landslides, mudflows, destruction of the tailings and dumps) with unfavorable ecological consequences. [less ▲]

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See detailImpact of urban form on daily travel: a comparative analysis
Cools, Mario ULg; Laterrasse, Jean; Le Néchet, Florent

Conference (2013)

Along with the emergence of Mega City Regions (MCRs) in Europe, mobility patterns have become increasingly polycentric. Since urban planning issues are especially difficult at this scale, it is important ... [more ▼]

Along with the emergence of Mega City Regions (MCRs) in Europe, mobility patterns have become increasingly polycentric. Since urban planning issues are especially difficult at this scale, it is important to assess the impact of the different evolutions in Mega City Region on important indicators such as daily travel times and daily travel distances. Therefore, in this study the differences between monocentric and polycentric MCRs in terms of travel distances and travel times for constraint and unconstraint mobility are investigated. To this end, four different MCRs were selected for the study: the Paris and Rhine-Ruhr metropolitan areas and the Randstad and Belgian Mega-City Region. For these MCRs regions, the travel times and distances were derived from the national travel surveys. Special attention was paid to the harmonization exercise based, calculating the daily travel distances for 7 different purposes and 9 different transport modes. With respect to the socio-demographics, the least common denominator was used to define comparable socio-demographics. Results indicate clear differences between the monocentric and polycentric regions, especially with respect to shopping and leisure trips. In addition, some policy interventions could be defined based upon the results of the disaggregation based on the socio-demographics. [less ▲]

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See detailThe impact of visual complexity on visual short-term memory in children with specific language impairment
Leclercq, Anne-Lise ULg; Maillart, Christelle ULg; Pauquay, Sarah et al

in Journal of the International Neuropsychological Society (2012), 18

Many studies have assessed visual short-term memory (VSTM) abilities in children with specific language impairment (SLI), with contrasting results: some studies observed preserved VSTM capacities while ... [more ▼]

Many studies have assessed visual short-term memory (VSTM) abilities in children with specific language impairment (SLI), with contrasting results: some studies observed preserved VSTM capacities while others reported impaired VSTM. The present study explores the hypothesis that the complexity of the visual information to be encoded and stored might underlie these discrepancies. Four VSTM conditions were administered to a group of 15 children with SLI, as well as to two groups of typically developing children, matched for chronological age and for VSTM capacity for visually simple stimuli, respectively. The stimuli to be remembered varied in their visual similarity and in the number of their visual features. Across the four VSTM conditions, children with SLI showed significantly reduced performance relative to an age-matched control group, and they were more strongly affected by visual similarity and number of features when compared to a control group matched for VSTM capacity for visually simple stimuli. The present results support the hypothesis that stimulus complexity is a determining factor of the poor VSTM performances in children with SLI. [less ▲]

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See detailImpact of visual modality on acoustic assessment of rooms
Defays, Aurore ULg; Safin, Stéphane ULg; Billon, Alexis ULg et al

Poster (2011, May 27)

In the context of the conception of a multimodal immersive environment aimed to support the task of assessing the acoustical quality of rooms based on numerical simulations, we study the relationship ... [more ▼]

In the context of the conception of a multimodal immersive environment aimed to support the task of assessing the acoustical quality of rooms based on numerical simulations, we study the relationship between image and sound. Auralias project aims to develop an immersive environment for a collaborative work between architects and acousticians combining 3D sound rendering and 3D view of the room model. In this study, we analyzed the impact of a room picture on the acoustic assessment. We chose reverberation as acoustic parameter. First, we confronted 70 subjects with a sound clip and asked them to assess the reverberation degree (control condition). Then, we divided the subjects into three groups and repeated the same judgment task. However, in the first group, subjects listening the sound clip were confronted with a room picture consistent with the sound. In the second group, they were confronted with a « distractor » room picture (no link with the sound). In the last group, they listened the sound clip without any room picture. Our results showed a positive impact of consistent pictures on reverberation assessment but we found no effect of distractor pictures. [less ▲]

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See detailThe impact of visual perceptual learning on sleep and local slow wave initiation
Mascetti, Laura ULg; Muto, Vincenzo ULg; Matarazzo, Luca et al

in Journal of Neuroscience (2013)

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See detailImpact of vocal load during a prolonged reading task with specific emphasis on the output level
Remacle, Angélique ULg; Roche, Anne ULg; Finck, Camille ULg et al

Conference (2010, October 18)

La charge vocale se définit comme la quantité d'utilisation vocale en termes de durée et d'intensité vocale. Dans cette étude, nous tentons d'étudier la charge vocale selon ces deux aspects. Pour ce faire ... [more ▼]

La charge vocale se définit comme la quantité d'utilisation vocale en termes de durée et d'intensité vocale. Dans cette étude, nous tentons d'étudier la charge vocale selon ces deux aspects. Pour ce faire, nous avons proposé une tâche de lecture à 50 femmes non fumeuses, âgées de 22 à 47 ans, chez qui l'examen phoniatrique a exclu la présence de toute pathologie vocale. L'impact de la durée de l'utilisation vocale a été étudié à l'aide de récoltes de mesures toutes les 30 minutes, au cours d'une lecture de deux heures. Nous avons réalisé des mesures objectives (Fréquence fondamentale, Jitter %, Shimmer %, Noise-to-Harmonic Ratio, étendue fréquentielle, dynamique d'intensité, temps maximum de phonation) ainsi qu'une auto évaluation sur une échelle visuelle analogique (qualité vocale, sensation d'effort, de fatigue et d'inconfort laryngé au cours de la lecture). Afin de mettre en évidence l'effet de l'intensité, chaque participante a réalisé deux fois la tâche de deux heures de lecture, à minimum trois jours d'intervalle afin de permettre la récupération entre les deux conditions de test. Une première fois à intensité conversationnelle (entre 60 et 65 dB), une seconde fois à intensité élevée (entre 70 et 75 dB). L'objectif était d'étudier les modifications liées à la durée et à l'intensité de l'utilisation vocale ainsi que l'impact de l'échauffement et de la fatigue vocale sur les paramètres étudiés. [less ▲]

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See detailImpact of vocal load on breathiness: Perceptual evaluation
Remacle, Angélique ULg; Schoentgen, Jean; FINCK, Camille ULg et al

in Logopedics, Phoniatrics, Vocology (in press)

Objectives: To evaluate the impact on voice of 2 hours of continuous oral reading. Methods: Fifty normophonic women underwent two sessions of voice loading in which the required intensity level varied: 60 ... [more ▼]

Objectives: To evaluate the impact on voice of 2 hours of continuous oral reading. Methods: Fifty normophonic women underwent two sessions of voice loading in which the required intensity level varied: 60-65 dB(A) for the first session, and 70-75 dB(A) for the second session. Ten expert judges evaluated the breathiness of one sentence recorded before and after each loading session. Pairs of stimuli were presented randomly to the judges, who were asked to designate the breathiest sample. Results: A significant decrease in breathiness was observed following both sessions, suggesting an improvement of voice subsequent to loading. When comparing the two intensity levels, no difference was found for breathiness after vocal loading. [less ▲]

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See detailImpact of winter feeding strategies on the growth of young dairy heifers in Wallonia
Picron, Pascale ULg; Turlot, Amélie; Froidmont, Eric et al

Conference (2009)

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See detailImpact of work on health
Hansez, Isabelle ULg

in Vandenbrande, T; Vandekerckhove, S; Vendramin, P (Eds.) et al Quality of work and employment in Belgium (2012)

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See detailImpact of work variables and safety appraisal on well-being at work
Hansez, Isabelle ULg; Taeymans, sophie; Nyssen, Anne-Sophie ULg

in Pikaar, R. N.; Koningsveld, E. A. P.; Settels (Eds.) Proceedings of the 16th World Congress of Ergonomics (2006)

Work environments have been encountering tremendous changes since the early 1990s. The enlargement of flexibility practices has raised concerns about well-being at work but also about safety. These two ... [more ▼]

Work environments have been encountering tremendous changes since the early 1990s. The enlargement of flexibility practices has raised concerns about well-being at work but also about safety. These two research areas, i.e. safety and well-being at work, have a strong tradition of diagnosis and research but there are few examples in the literature that attempt to link the two areas. Our goal in this study was to analyze the impact of both work variables and safety appraisal on well-being within a context of organizational changes. We used questionnaires on 4297 workers from a large company in the energy sector that has encountered big organizational changes these last years. Job control dimensions, safety appraisal, eustress and distress were measured using existing questionnaires. The results give some evidence for an additive explanation of eustress when adding safety appraisal in the hierarchical regression analysis. The additive effect of safety appraisal on distress was also significant but not enough strong to be considered seriously. A path analysis has shown that the effect of management safety climate on distress was rather an indirect effect through the job control dimensions. [less ▲]

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See detailImpact physiologique et pathologique du stress oxydant chez le cheval
De Moffarts, Brieuc; Kirschvink, Nathalie; Pincemail, Joël ULg et al

in Annales de Médecine Vétérinaire (2005), 149(1), 1-9

Oxidative stress has become of increasing interest in research and in equine and human medicine. If the pro-oxidant burden overwhelms the endogenous antioxidant defence of the organism, the arising ... [more ▼]

Oxidative stress has become of increasing interest in research and in equine and human medicine. If the pro-oxidant burden overwhelms the endogenous antioxidant defence of the organism, the arising imbalance between pro- and antioxidants is defined as oxidative stress. Different pathways might increase the generation of reactive oxygen species ( ROS) and results in oxidative stress. In physiological conditions, like during moderated exercise, the balance between ROS production and antioxidants allows to maintain an optimal organic function. In the light of the potentially deleterious role of excessive ROS production and the evidence that exercise-induced oxidative stress occurs in horses, the assessment of the antioxidant status should be considered in sport horses. Recent researches indicate that oxidative stress may play a role in physiopathology of several pathological syndromes in horses. Therefore, with classical treatment, the controlled administration of antioxidants appears interesting for the modulation of these processes, as well as in sport horses during intense exercise period. [less ▲]

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See detailL’impact relatif de la langue-toit sur une famille lexicale des dialectes locaux : les cas de « voisin », « voisiner », « voisinage » dans les dialectes de Wallonie
Baiwir, Esther ULg

in Iliescu, Maria; Siller-Runggaldier, Heidi; Danler, Paul (Eds.) Actes du XXVe congrès international de linguistique et de philologie romanes (t. IV) (2010)

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See detailImpact studies and water management with WolfHydro : a new physically based hydrological solver
Archambeau, Pierre ULg; Mouzelard, Thibaut; Erpicum, Sébastien ULg et al

in International Symposium on Environmental Hydraulics (2001, December)

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See detailImpact thérapeutique du dépistage de l’ischémie myocardique silencieuse chez le sujet diabétique de type 2
Wallemacq, Caroline ULg; Scheen, André ULg

in Revue Médicale Suisse (2008), 168(4), 1800-1804

Coronary artery disease is the major cause of mortality of type 2 diabetic subjects. Its early diagnosis to prevent progression and clinical events has intuitive appeal. Somehow, rationale for screening ... [more ▼]

Coronary artery disease is the major cause of mortality of type 2 diabetic subjects. Its early diagnosis to prevent progression and clinical events has intuitive appeal. Somehow, rationale for screening has not been clearly established. Screening should not modify the medical therapy because diabetic subjects have to be treated in a secondary prevention strategy. We have no data from randomized trials concerning a better outcome after revascularization in this specific population. The question how to select the high risk population to be screened has no response by now. SPECT and stress echocardiography seem valuable for screening but not for risk stratification. A large randomized clinical trial is required to confirm the cost-utility ratio of such a screening. [less ▲]

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See detailL'impact thermique et écologique du fonctionnement des centrales électriques sur la Sambre et la Meuse
Everbecq, Etienne ULg; Bourouag, Mohamed ULg; Deliège, Jean-François ULg et al

Report (2000)

L’objectif de cette étude est de mieux comprendre et de quantifier (via la modélisation mathématique) les phénomènes qui se déroulent dans le milieu aquatique au droit et en aval des centrales électriques ... [more ▼]

L’objectif de cette étude est de mieux comprendre et de quantifier (via la modélisation mathématique) les phénomènes qui se déroulent dans le milieu aquatique au droit et en aval des centrales électriques, en particulier les effets du cumul des prises d’eau et rejets thermiques sur l’écosystème aquatique. L'étude concernait les centrales électriques situées sur la Meuse en région wallonne : la centrale de Tihange, la centrale des Awirs, la centrale de Seraing et la centrale d’Angleur. L'étude a été organisée en 4 phases : i) la détermination de l'impact élémentaire de chaque centrale et la détermination de scénarios de fonctionnement des centrales; ii) la détermination de l'impact hydrologique et de l'impact thermique (individuel et cumulé) du fonctionnement des centrales électriques sur la Meuse; iii) la détermination de l'impact écologique du fonctionnement des centrales électriques sur l’écosystème Meuse; iiii) l'examen des actions possibles pour minimiser les impacts [less ▲]

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