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See detailLa promotion de la santé se décrète-t-elle ?
Absil, Gaëtan ULg; Vandoorne, Chantal ULg

in Education Santé (2009), (250), 5

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See detailComment j'explore... les troubles dystoniques : un guide simple et pratique
JEDIDI, Zayd ULg; Scholtes, Félix ULg; Kaschten, Bruno ULg et al

in Revue Médicale de Liège (2009), 64

La rencontre d'une dystonie, que ce soit en tant que symptôme entrant dans un cadre nosologique plus large ou en tant qu’anomalie isolée, n’est pas exceptionnelle en pratique clinique. La dystonie peut se ... [more ▼]

La rencontre d'une dystonie, que ce soit en tant que symptôme entrant dans un cadre nosologique plus large ou en tant qu’anomalie isolée, n’est pas exceptionnelle en pratique clinique. La dystonie peut se produire à tous âges de la vie. Un diagnostic précis est important afin d’optimiser la prise en charge de ces affections souvent chroniques et invalidantes. Les divers examens complémentaires devront inclure la résonance magnétique nucléaire, incontournable dans le diagnostic et le suivi des patients dystoniques. Nous présentons ici un aperçu des troubles dystoniques les plus fréquents et des solutions thérapeutiques appropriées, ainsi qu’une proposition de classification afin d’en simplifier le diagnostic. [less ▲]

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See detailUne démarche d'autoévaluation d'un programme centré sur l'alimentation
Miermans, Marie-Christine ULg

in Education Santé (2009), (250), 12

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See detailPromotion de la santé, prévention, éducation pour la santé : parle-t-on de la même chose ?
Vandoorne, Chantal ULg

in Education Santé (2009), (250), 6-7

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See detailObservations and asteroseismological analysis of the rapid subdwarf B pulsator EC 09582-1137
Randall, Suzanna K.; Van Grootel, Valérie ULg; Fontaine, Gilles et al

in Astronomy and Astrophysics (2009), 507

We made photometric and spectroscopic observations of the rapidly pulsating subdwarf B star EC 09582-1137 with the aim of determining the target's fundamental structural parameters from asteroseismology ... [more ▼]

We made photometric and spectroscopic observations of the rapidly pulsating subdwarf B star EC 09582-1137 with the aim of determining the target's fundamental structural parameters from asteroseismology. This analysis forms part of a long-term programme geared towards distinguishing between different proposed formation scenarios for hot B subdwarfs on the basis of their internal characteristics. So far, secure asteroseismic solutions have been computed for 9 of these pulsators, and first comparisons with results from evolutionary calculations look promising. The new data comprise 30 h of fast time-series photometry obtained with SUSI2 at the NTT on La Silla, Chile, as well as 1 h of low-resolution spectroscopy gathered with EMMI, also mounted on the NTT. From the photometry we detected 5 independent harmonic oscillations in the 135-170 s period range with amplitudes up to 0.5% of the mean brightness of the star. In addition, we extracted two periodicities interpreted as components of a rotationally split multiplet that indicate a rotation period of the order of 2-5 days. We also recovered the first harmonic of the dominant pulsation, albeit at an amplitude below the imposed 4σ detection threshold. The spectroscopic observations led to the following estimates of the atmospheric parameters of EC 09582-1137: T_eff = 34 806±233 K, log{g} = 5.80±0.04, and log N(He)/N(H) = -1.68±0.06. Using the observed oscillations as input, we searched in model parameter space for unique solutions that present a good fit to the data. Under the assumption that the two dominant observed periodicities correspond to radial or dipole modes, we were able to isolate a well-constrained optimal model that agrees with the atmospheric parameters derived from spectroscopy. The observed oscillations are identified with low-order acoustic modes with degree indices ℓ = 0, 1, 2, and 4 and match the computed periods with a dispersion of 0.57%. Non-adiabatic calculations reveal all theoretical modes in the observed period range to be unstable, an important a posteriori consistency check for the validity of the optimal model. The inferred structural parameters of EC 09582-1137 are T_eff = 34 806 K (from spectroscopy), log{g} = 5.788±0.004, Mast = 0.485±0.011 Msun, log{(M_env/Mast)} = -4.39±0.10, R = 0.147±0.002 Rsun, and L = 28.6±1.7 Lsun. We additionally derive the absolute magnitude MV = 4.44±0.05 and the distance d = 1460±66 pc. [less ▲]

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See detailDoes radiation treatment delay affect survival in glioblastoma
Robe, Pierre ULg; Nguyen-Khac, Minh-Tuan ULg; Lenelle, Jacques ULg et al

in Surgical Neurology (2009), 72(5), 519

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See detailAggressive pituitary adenomas occurring in young patients in a large Polynesian kindred with a germline R271W mutation in the AIP gene.
Jennings, J. E.; Georgitsi, M.; Holdaway, I. et al

in European Journal of Endocrinology (2009), 161(5), 799-804

OBJECTIVE: Mutations in the aryl hydrocarbon receptor-interacting protein (AIP) were recently shown to confer a pituitary adenoma predisposition in patients with familial isolated pituitary adenomas (FIPA ... [more ▼]

OBJECTIVE: Mutations in the aryl hydrocarbon receptor-interacting protein (AIP) were recently shown to confer a pituitary adenoma predisposition in patients with familial isolated pituitary adenomas (FIPA). We report a large Samoan FIPA kindred from Australia/New Zealand with an R271W mutation that was associated with aggressive pituitary tumors. DESIGN AND METHODS: Case series with germline screening of AIP and haplotype analyses among R271W families. RESULTS: This previously unreported kindred consisted of three affected individuals that either presented with or had first symptoms of a pituitary macroadenoma in late childhood or adolescence. The index case, a 15-year-old male with incipient gigantism and his maternal aunt, had somatotropinomas, and the maternal uncle of the index case had a prolactinoma. All tumors were large (15, 40, and 60 mm maximum diameter) and two required transcranial surgery and radiotherapy. All three affected subjects and ten other unaffected relatives were found to be positive for a germline R271W AIP mutation. Comparison of the single nucleotide polymorphism patterns among this family and two previously reported European FIPA families with the same R271W mutation demonstrated no common ancestry. CONCLUSIONS: This kindred exemplifies the aggressive features of pituitary adenomas associated with AIP mutations, while genetic analyses among three R271W FIPA families indicate that R271W represents a mutational hotspot that should be studied further in functional studies. [less ▲]

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See detailL'affranchissement des modèles de sexe comme facteur de meilleure réussite scolaire : résultats de recherche et activités de formation
Gavray, Claire ULg; Manço, Altay; Sensi, Dina

Report (2009)

The research shows that gender stereotypes remain more anchored in the male group, whatever the social origin of the teenagers. Their way of thinking and acting are still characterized by an ... [more ▼]

The research shows that gender stereotypes remain more anchored in the male group, whatever the social origin of the teenagers. Their way of thinking and acting are still characterized by an inferiorisation and a depreciation of ' feminine' world. These trends have a negative influence on their school insertion and performances. This increases the risk of confrontation with the violence, as victims or authors. The girls widely invest school but their chances to get a good autonomy are unevenly distributed between them , according to their social and cultural origins. [less ▲]

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See detailBoussaâda : Une ville touristique confrontée au développement urbain. Apports de la télédétection
Salmon, Marc ULg; Ammiche, Allaoua; Guermit, Ali et al

in Journées d’Animation Scientifique (JAS09) de l’AUF (2009, November)

La région de Boussaâda et son oasis en particulier profitent d'une situation géographique privilégiée ayant tôt permis une sédentarisation malgré le caractère aride du milieu. Ainsi, outre des sites ... [more ▼]

La région de Boussaâda et son oasis en particulier profitent d'une situation géographique privilégiée ayant tôt permis une sédentarisation malgré le caractère aride du milieu. Ainsi, outre des sites géologiques de caractère, on peut recenser de nombreux monuments et sites d'intérêt culturel et historique valorisables du point de vue touristique. Toutefois, la pression conjuguée d'une croissance rapide et importante de la population, d'une mutation du système organisationnel (administratif, juridictionnel et politique) et d'un contexte social particulier ont engendré un ensemble de dégradations qu'il convient de limiter. En conséquence, une première étape dans la prévention a consisté en l'évaluation des menaces anthropiques et naturelles par l'étude conjointe des documents bibliographiques, des observations de terrain et des données cartographiques et particulièrement de télédétection. [less ▲]

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See detailPrédiction de l'érosion ravinante en Algérie : vers une nouvelle approche probabiliste à l'aide de données multisources.
Daoudi, Mohamed; Salmon, Marc ULg; Dewitte, Olivier et al

in Journées d’Animation Scientifique (JAS09) de l’AUF (2009, November)

Pour faire face à la complexité de l'érosion ravinante dans la région tellienne, le présent travail propose l'utilisation d'une approche probabiliste basée sur des données multisources dont les images de ... [more ▼]

Pour faire face à la complexité de l'érosion ravinante dans la région tellienne, le présent travail propose l'utilisation d'une approche probabiliste basée sur des données multisources dont les images de télédétection. Un modèle de régression logistique a été élaboré pour la prédiction du processus de ravinement dans le bassin versant de l'oued Isser. Dans un premier temps, il expose les facteurs contrôlant l'érosion linéaire et dans un deuxième temps, il génère des cartes prédictives des zones propices au ravinement. [less ▲]

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See detailDamage Detection of Mechanical Components Using Null Subspace Analysis
Rutten, Christophe ULg; Loffet, Christophe; Golinval, Jean-Claude ULg

Conference given outside the academic context (2009)

This paper presents two original applications of the Null Subspace Analysis (NSA) method for fault diagnosis in mechanical components. The method is first applied to the case-study of electro-mechanical ... [more ▼]

This paper presents two original applications of the Null Subspace Analysis (NSA) method for fault diagnosis in mechanical components. The method is first applied to the case-study of electro-mechanical devices at the end of the assembly line with the aim of assessing their overall quality. The advantages of the proposed method rely in its rapidity of use and its reliability. At first, a set of five good (i.e. healthy) devices and four damaged devices was considered. The components were instrumented with one triaxial accelerometer on the flank and one monoaxial accelerometer on the top. Based on the NSA method, a mapping of the space [ active components, system order ] up to a system order of 100, was realized in order to select the appropriate order and number of active components. Eventually, thanks to this mapping, the method was able to successfully detect all the faulty components using the signal from only one accelerometer in one direction. The second application is related to the quality assessment of welded joints between stripes in a steel processing plan. Six welded joints with nominal welding parameters and twenty-seven welded joints with out-of-range parameters were realized. Again, the NSA method was able to diagnose successfully the welded joints using a single signal from one accelerometer. [less ▲]

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See detailQualification Procedure of Luminaires in the Event of an Impact to the Pole
Marin, Frédéric; Marville, Christian; Golinval, Jean-Claude ULg

Conference given outside the academic context (2009)

The objective of the study is to develop a testing specification on an electrodynamic shaker which ensures the qualification of a parking lighting device, whose pole is impacted by a car. The methodology ... [more ▼]

The objective of the study is to develop a testing specification on an electrodynamic shaker which ensures the qualification of a parking lighting device, whose pole is impacted by a car. The methodology is based on both a numerical approach and an experimental approach using an electrodynamic shaker. The first step of the analysis consists in modeling the structure and the excitation by means of a finite element approach. The calculation of the dynamic response of the "pole/lighting device" system to impact loading is repeated for different geometries of the pole. The second step is to consider each dynamic response at the fixing point of the lighting device on the pole as input for a base-excited single degree of freedom system. The theory developed for such a system allows to define severity criteria like the Shock Response Spectrum (SRS) which is the most representative criterion in the case of an impact. The severity of the vibration environment of the lighting device is then obtained by considering the envelope of the different computed SRS. Finally, different test specifications leading to equivalent SRS are proposed and the device is tested on an electrodynamic shaker. The developed methodology was applied to the NEMO lighting device (Schréder). [less ▲]

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See detailTechniques to improve the foreground segmentation with a 3D camera and a color camera
Pierard, Sébastien ULg; Van Droogenbroeck, Marc ULg

(2009, November)

Nowadays, techniques for real-time interpretation of video scenes are widespread. Amongst these techniques, the foreground segmentation is one of the favorite. It can be applied to color images as well as ... [more ▼]

Nowadays, techniques for real-time interpretation of video scenes are widespread. Amongst these techniques, the foreground segmentation is one of the favorite. It can be applied to color images as well as depth maps. The point of using depth maps is straightforward as a single color camera is not able to provide depth information. Technologies capable to acquire 3D informations are thus adequate to complement color cameras in consumer products. Practice has shown that 3D or RGB signals, taken alone, are unreliable to extract the foreground under arbitrary conditions. Therefore we combine both modalities to counter the intrinsic limitations of both modalities, which is only possible if the problems specific to a technology are handled appropriately. This paper presents a new global approach for enhanced foreground segmentation that handles limitations to 3D and RGB in a combined way. [less ▲]

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See detailReal-time processing of depth and color video streams to improve the reliability of depth maps
Pierard, Sébastien ULg; Leens, Jérôme ULg; Van Droogenbroeck, Marc ULg

Poster (2009, November)

Depth is a useful information in vision to understand the geometrical properties of an environment. Depth is traditionally computed in terms of a disparity map acquired by a stereoscopic system but, over ... [more ▼]

Depth is a useful information in vision to understand the geometrical properties of an environment. Depth is traditionally computed in terms of a disparity map acquired by a stereoscopic system but, over the last few years, several manufacturers have released single-lens cameras that directly capture depth information (also called range). This is an important technological breakthrough although range signals remain difficult to handle in practice, due to many reasons (low resolution, noise, low framerate, . . . ). Practitioners still struggle to use range data in their applications. The purpose of this paper is to give a brief introduction to range data (captured with a camera), discuss common limitations, and propose techniques to cope with difficulties typically encountered with range cameras. These techniques are based on a simultaneous view of the scene by a color and a depth camera that are combined to improve their interpretation in real time. [less ▲]

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See detailLa 11β-hydroxystéroïde déshydrogénase de type 1 – 1re partie Rôle de l’exposition tissulaire au cortisol dans le risque métabolique lié à l’obésité
Iovino, A.; Scheen, André ULg

in Médecine des Maladies Métaboliques (2009), 3

Abdominal obesity plays a key role in the development of metabolic syndrome. Similarities between metabolic syndrome and Cushing disease suggest that excessive local tissue exposition to glucocorticoids ... [more ▼]

Abdominal obesity plays a key role in the development of metabolic syndrome. Similarities between metabolic syndrome and Cushing disease suggest that excessive local tissue exposition to glucocorticoids, despite normal circulating plasma levels, might contribute to the pathophysiology of metabolic syndrome. To this respect, 11β-hydroxysteroid dehydrogenase type 1 (11HSD1), the enzyme which converts cortisone (inactive) to cortisol (active) in target tissues, raises much interest. Indeed, several studies showed both increased expression and activity of this enzyme in adipose tissues in presence of obesity. Even more striking, experimental data in rodents showed a direct link between increased 11HSD1 activity and the development of metabolic abnormalities. Furthermore, studies in mice KO for 11HSD1 confirmed the potential of inhibiting this enzyme to attenuate metabolic abnormalities related to visceral adiposity. Selective inhibitors of 11HSD1 are currently in development, and preliminary results obtained in rodents appear promising, with significant improvements in glucose and lipid profiles. The development of potent and selective 11HSD1 inhibitors may open new prospects in the treatment of metabolic syndrome or type 2 diabetes associated with abdominal obesity in humans. [less ▲]

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See detailLa qualité paysagère et l'ancrage identitaire des espaces d'activités urbains: un atout pour le développement de l'économie urbaine.
Ruelle, Christine ULg

in Territoire(s) wallon(s) (2009), 3

The development of new economic estates regularly provokes strong reactions among local communities. These protests, usually considered as nymbist, question the design of urban economic estates: might a ... [more ▼]

The development of new economic estates regularly provokes strong reactions among local communities. These protests, usually considered as nymbist, question the design of urban economic estates: might a better quality design more concerned with local landscape features be more welcome by the communities on the short and longer terms? [less ▲]

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See detailCommentaire de l'article 182 du CWATUP
Donnay, Luc ULg

in Commentaire systématique du CWATUP (2009)

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