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See detailLes causes de la résistance des enseignants à l'innovation
de Landsheere, Gilbert ULg

in L’enseignant face a l’innovation. Vol. 1, Rapport general (1974)

Dans une introduction générale, l'auteur distingue les innovations essentielles, indissociables de changements d'objectifs généraux de l'éducation, et les innovations contingentes, dont beaucoup ne sont ... [more ▼]

Dans une introduction générale, l'auteur distingue les innovations essentielles, indissociables de changements d'objectifs généraux de l'éducation, et les innovations contingentes, dont beaucoup ne sont que pseudo-innovations. Les aspects positif et négatif de la résistance à l'innovation sont ensuite discutés. Dans un premier chapitre, on démontre d'abord que la vitesse de pénétration de l'innovation dépend à la fois de l'acuité du besoin ressenti par la société et de l'objet de l'innovation. Quatre cas extrêmes sont présentés de façon théorique, puis illustrés. Les trois moments du processus éducatif (choix des objectifs - mise en œuvre des moyens pour les atteindre - évaluation) sont ensuite considérés. Enfin, quelques cas particuliers précisent et élargissent le débat : objectifs généraux modifiés sans les moyens de la politique nouvelle ; innovation matérielle sans support théorique innovation matérielle de façade ; innovation spécifique. Le deuxième chapitre est consacré à la démonstration expérimentale de la faible influence de l'innovation dans la pratique scolaire. Dans la conclusion générale, enfin, quinze causes de la résistance à l'innovation sont citées. [less ▲]

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See detailCauses de mortalité et survie du martin pêcheur (Alcedo atthis) en Europe
Libois, Roland ULg; Libois, François

in Aves (2013), 50(2), 65-79

This study reviews all available data for the European kingfisher in Europe (Euring database). The analysis of the mortality causes based on 966 juveniles and 753 adults reveals that a large proportion of ... [more ▼]

This study reviews all available data for the European kingfisher in Europe (Euring database). The analysis of the mortality causes based on 966 juveniles and 753 adults reveals that a large proportion of the carcasses (43%) are just reported as “found dead”. Other major causes of mortality listed in the database include percussions against a window (22%), collisions with engines (10%), other types of collisions (5%) or predation by domestic cats (5%). For both adults and juveniles, predation by cats is the most common death cause in Great Britain while in North Western Europe, mortality is mostly due to the percussion against windows. Juvenile mortality is highest at the end of the summer and in autumn, while adults decease mostly in the spring. The European kingfisher lifespan is short. Its demographic structure, studied in 4028 juveniles and 1131 adults, shows that mortality is very important during the first winter, as 70 % of the juveniles do not reach the next spring. The mortality rate is similar in subsequent reproductive seasons. The different pyramids of age are not identical (between adults and juveniles, between regions, between sexes) but the trend is similar: a reproductive individual has a probability of one third to reproduce the next year. Less than 10% of the European kingfishers survive over four years. [less ▲]

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See detailCauses de mortalité et teneur en métaux lourds de Guillemots de Troïl Uria aalge échoués le long du littoral belge.
Bouquegneau, Jean-Marie ULg; Debacker, Virginie ULg; Antoine, Nathalie et al

in Bulletin de la Société Royale des Sciences de Liège (1994), 63(1-2), 211-217

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See detailCauses et conséquences de la dissuasion nucléaire israélienne
Piet, Grégory ULg

in Cahiers de Sciences Politiques de l'ULg (2009)

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See detailCauses et mécanismes de la perte de l’aptitude au fractionnement du maïs séché à haute température
Malumba Kamba, Paul ULg; Deroanne, Claude; Masimango, Thaddée et al

Poster (2007, December 10)

Le séchage par entrainement d’air chaud dénature les principales familles des protéines du maïs, ce qui entraine la diminution de leur solubilité. Les températures élevées de séchage induisent également ... [more ▼]

Le séchage par entrainement d’air chaud dénature les principales familles des protéines du maïs, ce qui entraine la diminution de leur solubilité. Les températures élevées de séchage induisent également une diminution de l’aptitude à l’imprégnation d’eau des grains lors du trempage des maïs avec pour conséquence la diminution du ramollissement des grains, ce qui occasionne des moutures imparfaites et une réduction de la libération des granules d’amidon lors des phases de séparation de l’amidon et des protéines. La fonction logistique à deux asymptotes permet une meilleure prévision des rendements d’extraction de l’amidon et des quantités des glutens récoltées au tamisage en fonction de la température du séchage. [less ▲]

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See detailCauses et solutions aux inondations au Bénin (2010)
Ozer, Pierre ULg

Speech/Talk (2010)

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See detailCauses of death of harbor porpoises (Phocoena phocoena) stranded on the coasts of Belgium and Northern France
Jauniaux, Thierry ULg; Stekke, V.; Coignoul, Freddy ULg

in Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Veterinary Medicine (2009), 66(2), 392

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See detailCauses of death of harbor porpoises (Phocoena phocoena) stranded on the Dutch coast
Jauniaux, Thierry ULg; Bergerie, H.; Camphuysen, K. et al

in proceeding of the annual conference (2008)

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See detailCauses of death of harbor porpoises (Phocoena phocoena) stranded on the northern French coastline (1995-2015)
Jauniaux, Thierry ULg; Balin, A.; Bouveroux, T. et al

Conference (2016)

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See detailCauses of mortality in roe deer (Capreolus capreolus) in Southern Belgium : results of the passive surveillance 2010.
Grégoire, Fabien; Wirtgen, Marc; Volpe, Rosario ULg et al

Conference (2011, October)

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See detailLes causes structurelles des inégalités scolaires
Baye, Ariane ULg

Conference given outside the academic context (2014)

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See detailA cautionary note on the impact of protocol changes for Genome-Wide Association SNP x SNP Interaction studies: an example on ankylosing spondylitis
Bessonov, Kyrylo ULg; Gusareva, Elena ULg; Van Steen, Kristel ULg

in Human Genetics (2015)

Genome-wide association interaction (GWAI) studies have increased in popularity. Yet to date, no standard protocol exists. In practice, any GWAI workflow involves making choices about quality control ... [more ▼]

Genome-wide association interaction (GWAI) studies have increased in popularity. Yet to date, no standard protocol exists. In practice, any GWAI workflow involves making choices about quality control strategy, SNP filtering, linkage disequilibrium (LD) pruning, analytic tool to model or to test for genetic interactions. Each of these can have an impact on the final epistasis findings and may affect their reproducibility in follow-up analyses. Choosing an analytic tool is not straightforward, as different such tools exist and current understanding about their performance is based on often very particular simulation settings. In the present study, we wish to create awareness for the impact of (minor) changes in a GWAI analysis protocol can have on final epistasis findings. In particular, we investigate the influence of marker selection and marker prioritization strategies, LD pruning and the choice of epistasis detection analytics on study results, giving rise to 8 GWAI protocols. Discussions are made in the context of the ankylosing spondylitis (AS) data obtained via the Wellcome Trust Case Control Consortium (WTCCC2). As expected, the largest impact on AS epistasis findings is caused by the choice of marker selection criterion, followed by marker coding and LD pruning. In MB-MDR, co-dominant coding of main effects is more robust to the effects of LD pruning than additive coding. We were able to reproduce previously reported epistasis involvement of HLA-B and ERAP1 in AS pathology. In addition, our results suggest involvement of MAGI3 and PARK2, responsible for cell adhesion and cellular trafficking. Gene Ontology (GO) biological function enrichment analysis across the 8 considered GWAI protocols also suggested that AS could be associated to the Central Nervous System (CNS) malfunctions, specifically, in nerve impulse propagation and in neurotransmitters metabolic processes. [less ▲]

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