Last 7 days
Bookmark and Share    
Full Text
See detailA Comparison of Reduced Order Modeling Techniques Used in Dynamic Substructuring
Roettgen, Daniel; Seeger, Benjamin; Tai, Wei Che et al

in Proceedings of the International Modal Analysis Conference (IMAC) XXXIV (2016, January)

Experimental dynamic substructuring is a means whereby a mathematical model for a substructure can be obtained experimentally and then coupled to a model for the rest of the assembly to predict the ... [more ▼]

Experimental dynamic substructuring is a means whereby a mathematical model for a substructure can be obtained experimentally and then coupled to a model for the rest of the assembly to predict the response. Recently, various methods have been proposed that use a transmission simulator to overcome sensitivity to measurement errors and to exercise the interface between the substructures; including the Craig-Bampton, Dual Craig-Bampton, and Craig-Mayes methods. This work compares the advantages and disadvantages of these reduced order modeling strategies for two dynamic substructuring problems. The methods are first used on an analytical beam model to validate the methodologies. Then they are used to obtain an experimental model for structure consisting of a cylinder with several components inside connected to the outside case by foam with uncertain properties. This represents an exceedingly difficult structure to model and so experimental substructuring could be an attractive way to obtain a model of the system. [less ▲]

Detailed reference viewed: 45 (0 ULg)
Full Text
Peer Reviewed
See detailCharacterizing the morphology of suburban settlements: a method based on a semi-automatic classification of building clusters
de Smet, Fabian; Teller, Jacques ULg

in Landscape Research (2016), 41(1), 113-130

Urban sprawl is transforming our landscapes and rural areas at a spectacular pace. Measuring the strength of the phenomenon and proposing dynamic ways to delineate suburban areas have been the object of ... [more ▼]

Urban sprawl is transforming our landscapes and rural areas at a spectacular pace. Measuring the strength of the phenomenon and proposing dynamic ways to delineate suburban areas have been the object of much debate amongst scientists. The present article takes the view that, beyond measuring and delineating suburban areas, more efforts should be directed to qualifying the morphology of built settlements within these areas. Therefore it proposes a method based on a semi-automatic classification system of building clusters, designed to describe and interpret the phenomenon from a morphological perspective. This method is based on a combination of field surveys with numerical analyses of digital land cadastre maps. The application of this classification system to the suburban area around Liege reveals that, far from developing in a complete indifference of local conditions, contemporary suburban settlements are influenced by landscape structures inherited from the past. [less ▲]

Detailed reference viewed: 106 (13 ULg)
Full Text
Peer Reviewed
See detailShaping Pulses to Control Bistable Systems: Analysis, Computation and Counterexamples
Sootla, Aivar ULg; Oyarzun, Diego; Angeli, David et al

in Automatica (2016), 63

Detailed reference viewed: 6 (1 ULg)
See detailReduction of the treatment gap for problematic alcohol use in Belgium
Mistiaen, Patriek; Kohn, Laurence; Mambourg, Françoise et al

Report (2016)

1.1 Background Alcohol consumption is a widespread phenomenon in western societies and it is a significant cause of morbidity and mortality. Problematic alcohol use affects an estimated 3.6% of the ... [more ▼]

1.1 Background Alcohol consumption is a widespread phenomenon in western societies and it is a significant cause of morbidity and mortality. Problematic alcohol use affects an estimated 3.6% of the population between 15 and 64 years of age worldwide. The Belgian health survey found that 10% of the Belgian population has a problematic alcohol use. However, only a small proportion of people with a problematic alcohol use seeks or receives treatment. A European study (including Belgium) found that only 8% of persons with an alcohol problem had consulted some form of professional assistance in the past year. A Belgian study found that 12.8% of persons with an alcohol use problem indicated they searched for help in the year after the problem started but 61% did so in later years with a mean delay of 18 years. So, many people who could profit from help/assistance do not seek or receive it and there is a long delay. It may be concluded that there is a large ‘treatment gap’. 1.2 Research aim To analyse explanations for the treatment gap and to find ways and interventions, including facilitators and barriers in applying these, to improve the treatment rate of people with problematic alcohol use in Belgium. 1.3 Methods This study applied 3 research approaches: • Review of the international and Belgian literature o Medline, EMBASE, Cochrane Library and Psychinfo and grey literature sources were searched in summer 2014 for review studies and for Belgian primary studies with date limit >2000 and written in English, Dutch, French or German o Literature was categorized into barriers/facilitators for seeking/starting treatment in individuals with problematic alcohol use, in care professionals and in society and into interventions for reducing the treatment in the mentioned three groups o Only descriptive analyses of the literature were appliedQualitative research by interviews with persons with an alcohol use problem (n=14), and interviews and focus groups with care professionals, and experts in the alcohol field (n=60) o To identify the factors on a personal, organisational and societal level that impede or facilitate the screening and advice given by professionals, initiation of treatment, and treatment-uptake by individuals with AUP; o To understand the complex interactions between those factors; o To identify the interventions/measures the surveyed individuals and professionals would consider effective in reducing the treatment gap from the point of view of the professionals and patients. • Delphi study with persons with an alcohol use problem, care professionals, policy makers and experts (total across groups n= 35) in the alcohol field to check acceptability and priority of recommendations for improvement of the treatment o Two rounds by online questionnaire were planned and a face to face meeting afterwards with Delphi-participants to discuss results of previous rounds and to reach final agreement 1.4 Results In the literature study 85 relevant reviews and 22 Belgian primary studies were included. It was found that individuals with AUP follow a long road before seeking help. Main barriers along the road are denial of the problem, belief that alcohol problems may improve on their own, desire to handle problems on their own, thinking that treatment is ineffective or uncomfortable, dislike of the prevalent group, fear of stigma, lack of financial resources and other. Next it was found that care professionals face also many barriers to initiate a kind of intervention; common mentioned barriers are lack of time and lack of knowledge and confidence. Also it appeared there is a societal/public stigma towards people with a problematic alcohol use, causing a barrier for affected persons to seek help. Several effective interventions targeted at easing patient barriers and help them to seek treatment or initiate behaviour change were found: Screening-brief interventions-referral to treatment (SBIRT) by health care professionals, internet based screening and awareness programs,stigma reducing interventions. Also a large amount of research was found to overcome these impediments. Main intervention for patients is making them aware of their problem, e.g. by screening on alcohol use and motivational brief interventions. Main interventions for professionals is to train and to motivate them to screen and give brief interventions; however, all reviews stated as well that there was a lot of diversity in training formats and intensity, making it difficult to synthetize the results and to define the optimum duration and format of such initiatives. Interventions at a societal level are less clear The qualitative study revealed that several barriers as well as facilitators are experienced by individuals with AUP and professionals. It appears that the treatment gap is a multiple phenomenon. Some elements are related to the individuals with an AUP, some others to the health professionals, and, more globally, in the socioeconomic context. Four main themes could be deduced from the interviews: individuals with AUP go through a long and stepped (however not always a linear) process before becoming aware of and recognising their problem; relatives (at home or in the social network) and colleagues (at work) play an important role along the persons’ trajectory; professionals lack the time, knowledge, skills and proper attitudes and they pass the buck when it comes to tackling the AUP; and the origin and treatment of AUP are largely influenced by societal habits and views. It appeared that more information is needed among the general population about alcohol-related problems and healthcare professionals’ knowledge on the topic, and the skills to manage it properly should be enhanced. In addition contextual and societal barriers have to be tackled. The Delphi-study resulted in a general consensus on all proposals, based on the literature and the qualitative study. But it was stressed that it is necessary to implement the proposals simultaneously to enhance synergy. 1.5 Conclusion The three research approaches confirmed each other and showed that the treatment gap for persons with problematic alcohol use is a multi-layered problem (individuals with AUP, their relatives, professionals, care system and general society). There are effective interventions to lower the treatment gap, but to obtain maximal effectiveness measures have to be taken at all levels in simultaneous way. [less ▲]

Detailed reference viewed: 17 (6 ULg)
Full Text
See detailGeneralized Pascal triangle for binomial coefficients of words
Leroy, Julien ULg; Rigo, Michel ULg; Stipulanti, Manon ULg

E-print/Working paper (2016)

Detailed reference viewed: 27 (12 ULg)
Full Text
Peer Reviewed
See detailSmall-Angle Neutron Scattering investigation of cholesterol-doped DMPC liposomes interacting with β-cyclodextrin
Joset, Arnaud ULg; Grammenos, Angeliki; Hoebeke, Maryse ULg et al

in Journal of Inclusion Phenomena and Macrocyclic Chemistry (2016), 84(1), 153-161

The Small-Angle Neutron Scattering technique (SANS) has been applied to characterize the influence of a randomly methylated β–cyclodextrin (CD), called RAMEB, on dimyristoylphosphatidylcholine (DMPC ... [more ▼]

The Small-Angle Neutron Scattering technique (SANS) has been applied to characterize the influence of a randomly methylated β–cyclodextrin (CD), called RAMEB, on dimyristoylphosphatidylcholine (DMPC) liposomes doped with cholesterol. From the modelling of the experimental neutron scattering crosssections, the detailed response of the vesicle structure upon addition of increasing amounts of RAMEB up to 30 mM has been assessed. This study has been performed below and above the DMPC bilayer phase transition temperature and shows that cholesterol extraction by RAMEB is linked to a decrease of the average radius and of the aggregation number of the vesicles. This extraction takes place in a dose-dependent way until a more monodisperse population of cholesterol-free liposomes was obtained. In addition, the bilayer thickness evolution was inferred, as well as the liposome coverage by RAMEB. [less ▲]

Detailed reference viewed: 14 (3 ULg)
Full Text
Peer Reviewed
See detail2D dynamic studies combined with the surface curvature analysis to predict Arias Intensity amplification
Torgoev, Almazbek ULg; Havenith, Hans-Balder ULg

in Journal of Seismology (2016)

A 2D elasto-dynamic modelling of the pure topographic seismic response is performed for six models with a total length of around 23.0 km. These models are reconstructed from the real topographic settings ... [more ▼]

A 2D elasto-dynamic modelling of the pure topographic seismic response is performed for six models with a total length of around 23.0 km. These models are reconstructed from the real topographic settings of the landslide-prone slopes situated in the Mailuu-Suu River Valley, Southern Kyrgyzstan. The main studied parameter is the Arias Intensity (Ia, m/sec), which is applied in the GIS-based Newmark method to regionally map the seismically-induced landslide susceptibility. This method maps the Ia values via empirical attenuation laws and our studies investigate a potential to include topographic input into them. Numerical studies analyse several signals with varying shape and changing central frequency values. All tests demonstrate that the spectral amplification patterns directly affect the amplification of the Ia values. These results let to link the 2D distribution of the topographically amplified Ia values with the parameter called as smoothed curvature. The amplification values for the low-frequency signals are better correlated with the curvature smoothed over larger spatial extent, while those values for the high-frequency signals are more linked to the curvature with smaller smoothing extent. The best predictions are provided by the curvature smoothed over the extent calculated according to Geli’s law. The sample equations predicting the Ia amplification based on the smoothed curvature are presented for the sinusoid-shape input signals. These laws cannot be directly implemented in the regional Newmark method, as 3D amplification of the Ia values addresses more problem complexities which are not studied here. Nevertheless, our 2D results prepare the theoretical framework which can potentially be applied to the 3D domain and, therefore, represent a robust basis for these future research targets. [less ▲]

Detailed reference viewed: 14 (1 ULg)
Full Text
Peer Reviewed
See detailThe effects of a documentary film about schizophrenia on cognitive, affective and behavioural aspects of stigmatisation
Thonon, Bénédicte ULg; Pletinx, Amandine; Grandjean, Allison et al

in Journal of Behavior Therapy and Experimental Psychiatry (2016), 50

Background and Objectives: Stereotypes about schizophrenia may lead to prejudicial attitudes and discrimination with debilitating effects on people diagnosed with schizophrenia. There is thus a need to ... [more ▼]

Background and Objectives: Stereotypes about schizophrenia may lead to prejudicial attitudes and discrimination with debilitating effects on people diagnosed with schizophrenia. There is thus a need to develop interventions aiming to prevent, reduce or eliminate such stereotypes. The aim of this study was to evaluate the effects of a documentary film on schizophrenia on cognitive, affective and behavioural aspects of stigmatisation. Methods: Forty-nine participants were assessed on measures of stereotypes and social distance, and on the Model of Stereotype Content, which includes measures of stereotypes, emotional reactions and behavioural tendencies. Participants were randomly assigned into either a condition in which they viewed the documentary film (Film group), or into a control condition in which no intervention was conducted (Control group). Results: Only participants in the Film group revealed a significant decrease of negative stereotypes (Dangerousness and Unpredictability) and desired Social distance, and a significant increase in the perception of sociability in persons with schizophrenia. Limitations: Small sample size and its reduced generalizability are the main limitations in this study. Conclusions: These findings suggest that a documentary film promoting indirect contact with people diagnosed with schizophrenia is a promising tool to prevent and reduce stigmatisation regarding schizophrenia. [less ▲]

Detailed reference viewed: 16 (0 ULg)
Full Text
Peer Reviewed
See detailMobilité pastorale au Sahel et en Afrique de l’Ouest : essai de synthèse
HIYA MAIDAWA, Moustapha; Andres, Ludovic ULg; yamba, boubacar et al

Conference (2016, January)

La mobilité pastorale joue un rôle important dans la vie socio-économique des populations au Sahel et en Afrique de l’Ouest. Cependant, à travers la littérature, on perçoit la mobilité comme responsable ... [more ▼]

La mobilité pastorale joue un rôle important dans la vie socio-économique des populations au Sahel et en Afrique de l’Ouest. Cependant, à travers la littérature, on perçoit la mobilité comme responsable de la dégradation de l’environnement, l’émission de gaz à effet de serre, la désertification, la faible performance économique, etc. (AUBREVILLE A, 1949 ; HUBERT H, 1920; LAMPREY H, 1975). Toutefois, à partir de la fin des années 1990 un nouvel regard s’est orienté vers l’élevage mobile avec son rôle dans la lutte contre la désertification et le maintien de la biodiversité (BOURBOUZE A. et al, 2002 ; EL AICH A, WATERHOUSE A, 1999). Cette synthèse bibliographique tente de dégager le rôle et la place de la mobilité pastorale dans la vie socio-économique et environnementale au Sahel et en Afrique de l’Ouest. De plus, cette synthèse fait ressortir le lien entre la mobilité et les mutations foncières que vivent le pastoralisme et la mobilité au Sahel. [less ▲]

Detailed reference viewed: 30 (1 ULg)
Full Text
See detailUne forme compliquée d'hypercalcémie hypocalciurique familiale
Potorac, Iulia ULg; BETEA, Daniela ULg; MALAISE, Olivier ULg et al

in Abstract book - Symposium "Perspectives in Endocrinology" (2016, January)

Detailed reference viewed: 28 (8 ULg)
Full Text
See detailThe genetic causes of pituitary gigantism
Rostomyan, Liliya ULg; Lysy, P; Desfilles, C et al

in Abstract book - Symposium "Perspectives in Endocrinology" (2016, January)

Detailed reference viewed: 16 (2 ULg)
Full Text
Peer Reviewed
See detailComment de futurs enseignants du secondaire supérieur en psychologie et sciences de l’éducation apprennent à évaluer les apprentissages
Francois, Nathalie ULg; Noël, Stéphanie ULg

Conference (2016, January)

Cette communication exposera le dispositif mis en place dans le cadre d’une formation d’enseignants du secondaire supérieur en psychologie et sciences de l’éducation pour amener les étudiants à acquérir ... [more ▼]

Cette communication exposera le dispositif mis en place dans le cadre d’une formation d’enseignants du secondaire supérieur en psychologie et sciences de l’éducation pour amener les étudiants à acquérir des compétences d’évaluation des apprentissages. Ces futurs agrégés effectuent des stages dans l’enseignement général mais également dans l’enseignement professionnalisant. Dans ce dernier, ils s’adressent essentiellement à des élèves inscrits dans des formations à des métiers de l’interaction humaine (éducateurs, puéricultrice, animateur, aide familiale…) et sont donc amenés à développer et à évaluer des compétences professionnelles. Lors d’un premier module préparant au stage au sein de l’enseignement général, les futurs enseignants (FE) sont invités, au sein du cours de didactique disciplinaire, à découvrir selon des démarches inductives, les trois grandes familles de tâches du métier d’enseignant : préparer une séquence de cours, gérer un microenseignement, évaluer les apprentissages. Pour cette troisième famille de tâches, les FE vont s’essayer tout d’abord à l’élaboration d’une évaluation de contenus sur base de leur microenseignement. Dans un second temps, ils sont confrontés à l’évaluation d’une tâche complexe. Une mise en situation leur permet de jouer le rôle d’un enseignant en sciences humaines qui évalue une revue de presse présentée oralement par des personnes qui endossent le rôle d’élèves (par le biais de capsules vidéo). Ces mises en situation permettent ensuite, sur la base des notes attribuées et des critères et indicateurs élaborés, de débattre de l’évaluation, de ce qu’elle recouvre et du cadre théorique qui permet de la soutenir (validité, cohérence, objectivité, critères) (Beckers, 2011). Lors du second module consacré à la préparation du stage dans l’enseignement qualifiant, les FE sont invités à évaluer et annoter des copies authentiques d’élèves futurs agents d’éducation. Cette troisième mise en situation est à nouveau l’occasion de discuter des critères et indicateurs d’évaluation mais également de sa fonction régulatrice (Beckers, 2007). [less ▲]

Detailed reference viewed: 14 (0 ULg)
Full Text
See detailRapport d'activité 2015 de la convention de recherche : "DEPITRIM : Detection, control measures and impact study of Epitrix in Belgium"
Maes, Martine; Jansen, Jean-Pierre; De Clercq, Patrick et al

Report (2016)

Detailed reference viewed: 23 (2 ULg)
Full Text
See detailReappraisal of the deep Devonian strata under the Mons Basin
Licour, L.; Dupont, N.; Swennen, R. et al

Conference (2016, January)

Detailed reference viewed: 28 (2 ULg)
Full Text
Peer Reviewed
See detailL’infraction d’obstacle à la surveillance sous le spectre du droit au silence et du droit de ne pas s’auto-incriminer
Michiels, Olivier ULg; Falque, Géraldine ULg

in Orientations : la Revue du Droit Social et de la Gestion du Personnel (2016), (2006/1), 2-11

L'article fait le point sur le contrôle de l’application des lois sociales par les inspecteurs sociaux et le délit d’obstacle à la surveillance envisagé sous l'angle du droit au silence et du droit de ne ... [more ▼]

L'article fait le point sur le contrôle de l’application des lois sociales par les inspecteurs sociaux et le délit d’obstacle à la surveillance envisagé sous l'angle du droit au silence et du droit de ne pas s'auto-incriminer. Il envisage encore la cohabitation entre le délit d'obstacle et le droit au silence sous l’angle de la jurisprudence de la Cour européenne des droits de l’homme et du droit interne. [less ▲]

Detailed reference viewed: 40 (6 ULg)