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See detailMultidetector spiral CT arthrography of the shoulder. Clinical applications and limits, with MR arthrography and arthroscopic correlations
Lecouvet, Frédéric E.; SIMONI, Paolo ULg; Koutaissoff, Sophie et al

in European Journal of Radiology (2008), 68(1), 120-136

Although MR imaging and MR arthrography are the first choice modalities for shoulder imaging, CT arthrography (CTA) may be used successfully to address many clinical questions. The advent of submillimeter ... [more ▼]

Although MR imaging and MR arthrography are the first choice modalities for shoulder imaging, CT arthrography (CTA) may be used successfully to address many clinical questions. The advent of submillimeter multiple detector CT technology and subsequent excellent three-plane resolution has considerably increased the quality of CTA examinations and has propelled this technique to the forefront in a growing number of indications. The combined use of iodinated contrast material for fluoroscopic confirmation of the articular position of the needle before injection of gadolinium chelates for MR arthrography offers the unique opportunity to compare CTA and MRA findings in carefully selected cases. This paper illustrates capabilities and limits of CTA for the study of rotator cuff tears, shoulder instability, cartilage lesions, anatomical variants and abnormalities of the glenoid labrum, with correlations to MR arthrography and surgical findings. [less ▲]

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See detailMultidimensional analysis of social identities
Jacquemain, Marc ULg; Vandekeere, Michel

Conference (1990, January)

All the CLEO's researches based on opinion polls have showed that feeling of belgonging to Belgium and Wallony go hand in hand rather tha being substitute. The use of tools like multimensional scaling ... [more ▼]

All the CLEO's researches based on opinion polls have showed that feeling of belgonging to Belgium and Wallony go hand in hand rather tha being substitute. The use of tools like multimensional scaling help to calculate "proximities" between all feelings of belonging and help design a global map of identities. [less ▲]

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See detailMultidimensional analysis of the importance given to physical activity promotion in secondary schools of French-speaking Belgium
Snyers, Jérôme; Halkin, Anne-Sophie; Lejacques, Thibaut et al

in Global Journal of Health and Physical Education Pedagogy (2014), 3(3), 212-227

Schools present a privileged environment to address physical inactivity. Actions to promote an active lifestyle have been launched for over 20 years in the European Union. In French-speaking Belgium, such ... [more ▼]

Schools present a privileged environment to address physical inactivity. Actions to promote an active lifestyle have been launched for over 20 years in the European Union. In French-speaking Belgium, such actions have multiplied, but efficiency remains undocumented due to the lack of systematic data regarding health and physical activity (PA) promotion at school. This research aimed to create a tool and to use it to establish an empirical baseline regarding PA promotion in secondary schools. Six main dimensions, all broken into variables, were identified after an extensive literature search. Six experts assigned different weighting factors to each dimension and variable, thereby allowing the attribution of scores. Fifty-one secondary schools were analyzed on this basis. The mean global score of the sample was 44.7 on a maximum of 100. PA was better promoted in urban schools with 250 to 499 students with high socioeconomic status. Real in-school policies aimed at promoting PA were lacking. Active transport to and from school was seldom encouraged. The number of PE classes was insufficient. The facilities used were of better quality than expected. This exploratory research constitutes an important step toward the conception of a tool based solely on objective variables. It should also serve as a catalyst to implement new field projects. [less ▲]

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See detailMultidimensional extension of the Morse-Hedlund theorem
Durand, Fabien; Rigo, Michel ULg

in European Journal of Combinatorics (2013), 34

Nivat's conjecture is about the link between the pure periodicity of a subset M of Z^2, i.e., invariance under translation by a fixed vector, and some upper bound on the function counting the number of ... [more ▼]

Nivat's conjecture is about the link between the pure periodicity of a subset M of Z^2, i.e., invariance under translation by a fixed vector, and some upper bound on the function counting the number of different rectangular blocks occurring in $M$. Attempts to solve this conjecture have been considered during the last fifteen years. Let d>1. A legitimate extension to a multidimensional setting of the notion of periodicity is to consider sets of Z^d definable by a first order formula in the Presburger arithmetic <Z;<,+>. With this latter notion and using a powerful criterion due to Muchnik, we solve an analogue of Nivat's conjecture and characterize sets of Z^d definable in <Z;<,+> in terms of some functions counting recurrent blocks, that is, blocks occurring infinitely often. [less ▲]

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See detailMultidimensional flow modelling to guide hydromorphological restoration of an Alpine river
Rulot, François ULg; Detrembleur, Sylvain; Archambeau, Pierre ULg et al

in Proceedings of the 9th International Symposium on Ecohydraulics 2012 (2012)

Detailed reference viewed: 20 (6 ULg)
See detailMultidimensional fluctuation, pseudo-guessing and carelessness IRT person parameters with polytomous item response models
Raîche, Gilles; Magis, David ULg; Béland, Sébastien

Conference (2010, July)

Frequently, candidates at aptitude multiple choice test miss attention, motivation or preparation and show underachievement or overachievement. Similarly, at surveys respondents show frequently misfitting ... [more ▼]

Frequently, candidates at aptitude multiple choice test miss attention, motivation or preparation and show underachievement or overachievement. Similarly, at surveys respondents show frequently misfitting patterns of responses. Their result does not correspond any more to their true aptitude or attitude, an inappropriate response pattern being obtained. New multidimensional models specific to polytomous responses circumvent these situations and diminish considerably the associated person bias. Multidimensional polytomous item response models adding new person parameters to the trait of the candidate are proposed. In the spirit of previous Raiche’s dichotomous responses IRT propositions, like the discrimination and don’t know item parameters, these models offer fluctuation and don’t know person parameters. Estimation methods, results from simulation showing the efficacy of these models and recommendations for the design of testing situations will be presented. [less ▲]

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See detailMultidimensional fluctuation, pseudo-guessing and carelness IRT person parameters models
Raîche, Gilles; Magis, David ULg; Blais, Jean-Guy

Conference (2009, July)

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See detailMultidimensional GCxGC Fingerprinting for Environmental and Biological Forensics
Patterson Jr; Sandau; Focant, Jean-François ULg

Conference (2011, July)

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See detailMultidimensional generalized automatic sequences and shape-symmetric morphic words
Charlier, Emilie ULg; Kärki, Tomi; Rigo, Michel ULg

in Proceedings of AutoMathA (2009)

An infinite word is S-automatic if, for all n ≥ 0, its (n + 1)st letter is the output of a deterministic automaton fed with the representation of n in the considered numeration system S. In this paper, we ... [more ▼]

An infinite word is S-automatic if, for all n ≥ 0, its (n + 1)st letter is the output of a deterministic automaton fed with the representation of n in the considered numeration system S. In this paper, we consider an analogous definition in a multidimensional setting and study the relationship with the shape-symmetric infinite words as introduced by Arnaud Maes. Precisely, for d ≥ 2, we show that a multidimensional infinite word x : N^d → Σ over a finite alphabet Σ is S-automatic for some abstract numeration system S built on a regular language containing the empty word if and only if x is the image by a coding of a shape-symmetric infinite word. [less ▲]

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See detailMultidimensional generalized automatic sequences and shape-symmetric morphic words
Charlier, Emilie ULg; Kärki, Tomi; Rigo, Michel ULg

in Discrete Mathematics (2010), 310

An infinite word is S-automatic if, for all n>=0, its (n+1)st letter is the output of a deterministic automaton fed with the representation of n in the numeration system S. In this paper, we consider an ... [more ▼]

An infinite word is S-automatic if, for all n>=0, its (n+1)st letter is the output of a deterministic automaton fed with the representation of n in the numeration system S. In this paper, we consider an analogous definition in a multidimensional setting and study its relation to the shapesymmetric infinite words introduced by Arnaud Maes. More precisely, for d>1, we show that a multidimensional infinite word x over a finite alphabet is S-automatic for some abstract numeration system S built on a regular language containing the empty word if and only if x is the image by a coding of a shape-symmetric infinite word. [less ▲]

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See detailMultidimensional growth measurements of abdominal aortic aneurysms.
Martufi, Giampaolo; Auer, Martin; Roy, Joy et al

in Journal of vascular surgery (2013), 58(3), 748-55

BACKGROUND: Monitoring the expansion of abdominal aortic aneurysms (AAAs) is critical to avoid aneurysm rupture in surveillance programs, for instance. However, measuring the change of the maximum ... [more ▼]

BACKGROUND: Monitoring the expansion of abdominal aortic aneurysms (AAAs) is critical to avoid aneurysm rupture in surveillance programs, for instance. However, measuring the change of the maximum diameter over time can only provide limited information about AAA expansion. Specifically, regions of fast diameter growth may be missed, axial growth cannot be quantified, and shape changes of potential interest for decisions related to endovascular aneurysm repair cannot be captured. METHODS: This study used multiple centerline-based diameter measurements between the renal arteries and the aortic bifurcation to quantify AAA growth in 51 patients from computed tomography angiography (CTA) data. Criteria for inclusion were at least 1 year of patient follow-up and the availability of at least two sufficiently high-resolution CTA scans that allowed an accurate three-dimensional reconstruction. Consequently, 124 CTA scans were systematically analyzed by using A4clinics diagnostic software (VASCOPS GmbH, Graz, Austria), and aneurysm growth was monitored at 100 cross-sections perpendicular to the centerline. RESULTS: Monitoring diameter development over the entire aneurysm revealed the sites of the fastest diameter growth, quantified the axial growth, and showed the evolution of the neck morphology over time. Monitoring the development of an aneurysm's maximum diameter or its volume over time can assess the mean diameter growth (r = 0.69, r = 0.77) but not the maximum diameter growth (r = 0.43, r = 0.34). The diameter growth measured at the site of maximum expansion was ~16%/y, almost four times larger than the mean diameter expansion of 4.4%/y. The sites at which the maximum diameter growth was recorded did not coincide with the position of the maximum baseline diameter (rho = 0 .12; P = .31). The overall aneurysm sac length increased from 84 to 89 mm during the follow-up (P < .001), which relates to the median longitudinal growth of 3.5%/y. The neck length shortened, on average, by 6.2% per year and was accompanied by a slight increase in neck angulation. CONCLUSIONS: Neither maximum diameter nor volume measurements over time are able to measure the fastest diameter growth of the aneurysm sac. Consequently, expansion-related wall weakening might be inappropriately reflected by this type of surveillance data. In contrast, localized spots of fast diameter growth can be detected through multiple centerline-based diameter measurements over the entire aneurysm sac. This information might further reinforce the quality of aneurysm surveillance programs. [less ▲]

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See detailMultidimensionnalité de la précarité
Gavray, Claire ULg; Ruyters, Christine

Report (2001)

Ce livre consiste en un état des lieux de la cohésion économique en -et par la- Région Wallonne. Il comporte un volet statistique (sur les personnes et les ménages en matière d'emploi, de famille, de ... [more ▼]

Ce livre consiste en un état des lieux de la cohésion économique en -et par la- Région Wallonne. Il comporte un volet statistique (sur les personnes et les ménages en matière d'emploi, de famille, de santé et de sécurité d'existence) , un volet descriptif d'actions menées et un volet 'analyses et recommandations'. [less ▲]

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See detailMultidimensionnalité des facteurs de précarité - Articulation des risques et fragilités d'existence
Gavray, Claire ULg; Ruyters, Christine

in Rapport sur la cohésion sociale en région wallonne - volet statistique (2007)

Ce livre donne pour la deuxième fois un état des lieux de la cohésion sociale en Wallonnie sur base d'indicateurs socio-économiques. Il comporte des données en matière d'emploi, de famille, de revenus, de ... [more ▼]

Ce livre donne pour la deuxième fois un état des lieux de la cohésion sociale en Wallonnie sur base d'indicateurs socio-économiques. Il comporte des données en matière d'emploi, de famille, de revenus, de santé, de sécurité d'existence ...issues de diverses enquêtes et banques de données. [less ▲]

Detailed reference viewed: 38 (5 ULg)
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See detailMultidisciplinary and Evidence-based Method for Prioritizing Diseases of Food-producing Animals and Zoonoses
Humblet, Marie-France ULg; Vandeputte, Sébastien ULg; Albert, Adelin ULg et al

in Emerging Infectious Diseases (2012), 18(4),

To prioritize 100 animal diseases and zoonoses in Europe, we used a multicriteria decision-making procedure based on opinions of experts and evidence-based data. Forty international experts performed ... [more ▼]

To prioritize 100 animal diseases and zoonoses in Europe, we used a multicriteria decision-making procedure based on opinions of experts and evidence-based data. Forty international experts performed intracategory and intercategory weighting of 57 prioritization criteria. Two methods (deterministic with mean of each weight and probabilistic with distribution functions of weights by using Monte Carlo simulation) were used to calculate a score for each disease. Consecutive ranking was established. Few differences were observed between each method. Compared with previous prioritization methods, our procedure is evidence based, includes a range of fields and criteria while considering uncertainty, and will be useful for analyzing diseases that affect public health [less ▲]

Detailed reference viewed: 36 (6 ULg)
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See detailMultidisciplinary approach in two patients with multiple peroxysomal function deficiency
Misson, Jean-Paul ULg; Evrard, Ph; Verellen, G. et al

in Peroxisomes and their metabolites in cellular functions (1985, August)

Detailed reference viewed: 6 (0 ULg)
See detailMultidisciplinary approach to reconstruct the Belgian Frasnian platform - facies, carbon isotopes and magnetic susceptibility
Da Silva, Anne-Christine ULg; Mabille, Cedric; Boulvain, Frédéric ULg

in . SDGG, Heft 58 – Abstract Volume – 26th IAS Regional Meeting/SEPM-CES SEDIMENT 2008 (2008)

Detailed reference viewed: 13 (2 ULg)
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See detailMultidisciplinary approach to study of design cognitive process: the case of human errors in architectural preliminary design
Safin, Stéphane ULg; Leclercq, Pierre ULg; Blavier, Adelaïde ULg

Conference (2008)

This contribution aims to show a multidisciplinary method to understand and formalize design process, from a cognitive point of view, in the particular case of human errors in architectural preliminary ... [more ▼]

This contribution aims to show a multidisciplinary method to understand and formalize design process, from a cognitive point of view, in the particular case of human errors in architectural preliminary design process. We first emphasize the importance of error detection and recovery in the sketching phase in architecture. After the description of our methodology, we explain the general theory and model on human error, the short study we made and our proposition of a model on hu- man error in architectural design. We finally conclude by giving some first re- quirements from this model in order to improve to the development of sketch- based CAD tools. [less ▲]

Detailed reference viewed: 49 (2 ULg)