Rôle de certaines caractéristiques des élèves sur la quantité et la qualité de leur engagement moteur

in Carlier, Ghislain; Delens, Cécile; Renard, Jean-pierre (Eds.) Actes du colloque AFRAPS-EDPM "Identifier les effets de l'intervention en motricité humaine" (1999)

Carreiro da Costa et coll. (1997) résument les critères d'efficacité de l'enseignement de la manière suivante: lorsqu'on poursuit des objectifs d'apprentissage, il convient que l'élève soit physiquement ... [more ▼]

Carreiro da Costa et coll. (1997) résument les critères d'efficacité de l'enseignement de la manière suivante: lorsqu'on poursuit des objectifs d'apprentissage, il convient que l'élève soit physiquement engagé, qu'il répète des exercices critères ou directement en relation avec les tâches à apprendre, que son engagement soit couronné de succès, qu'il reçoive des réactions à sa prestation mais également qu'il veuille progresser. Le professeur favorisera l'apprentissage en intervenant sur le nombre de répétitions des tâches, l'organisation des exercices, la variété des activités et l'adaptation de la difficulté au niveau des élèves. ... [less ▲]

Perceptions de compétence et de comportement par des élèves considérés comme les "meilleurs" et les "plus faibles" en éducation physique

in Carlier, Ghislain; Delens, Cécile; Renard, Jean-Pierre (Eds.) Actes du colloque AFRAPS-EDPS "Identifier les effets de l'intervention en motricité humaine (1999)

L'image qu'un individu possède de lui-même influence ses attitudes, ses motivations et ses comportements. Faire preuve de compétence apporte un sentiment de fierté et de satisfaction à l'élève. A l'opposé ... [more ▼]

L'image qu'un individu possède de lui-même influence ses attitudes, ses motivations et ses comportements. Faire preuve de compétence apporte un sentiment de fierté et de satisfaction à l'élève. A l'opposé, l'échec peut aboutir à un sentiment d'incompétence et de frustration. En effet, la qualité des expériences motrices vécues, les succès ou les échecs rencontrés au cours des activités physiques figurent parmi les déterminants critiques du développement de l'auto-perception de l'élève par rapport à l'activité sportive, qu'elle prennent place à l'école ou dans un club. ... [less ▲]

Contribution of the carbohydrate moiety to conformational stability of the carboxypeptidase Y high pressure study.

in European Journal of Biochemistry (1999), 262(2), 475-83

The process of pressure-induced denaturation of carboxypeptidase Y and the role of the carbohydrate moiety in its response to pressure and low temperature were investigated by measuring in situ the ... [more ▼]

The process of pressure-induced denaturation of carboxypeptidase Y and the role of the carbohydrate moiety in its response to pressure and low temperature were investigated by measuring in situ the catalytic activity and, the intrinsic and 8-anilino-1-naphthalene sulfonic acid binding fluorescences. Pressure-induced denaturation of carboxypeptidase Y is a process involving at least three transitions. Low pressures (below 150 MPa) induced slight conformational changes characterized by a slight decrease in the center of the spectral mass of intrinsic fluorescence, whereas no changes in 8-anilino-1-naphthalene sulfonic acid binding fluorescence were observed and 80% of the catalytic activity remained. Higher pressure (150-500 MPa) induced further conformational changes, characterized by a large decrease in the center of the spectral mass of intrinsic fluorescence, a large increase in the 8-anilino-1-naphthalene sulfonic acid binding fluorescence and the loss of all catalytic activity. Thus, this intermediate exhibited characteristics of molten globule-like state. A further increase, in pressure (above 550 MPa) induced transition from this first molten globule-like state to a second molten globule-like state. This two-stage denaturation process can be explained by assuming the existence of two independent structural domains in the carboxypeptidase molecule. A similar three-transition process was found for unglycosylated carboxypeptidase Y, but, the first two transitions clearly occurred at lower pressures than those for glycosylated carboxypeptidase Y. These findings indicate that the carbohydrate moiety protects carboxypeptidase Y against pressure-induced denaturation. The origin of the protective effects is discussed based on the known crystallographic structure of CPY. [less ▲]

Evaluation par les chômeurs de leur formation professionnelle

Report (1999)

Le rapport comprend deux versants : un versant qualitatif par entretiens et un versant quantitatif par questionnaire. Il s'agissait de faire évaluer par les chômeurs en formation professionnelle, les ... [more ▼]

Le rapport comprend deux versants : un versant qualitatif par entretiens et un versant quantitatif par questionnaire. Il s'agissait de faire évaluer par les chômeurs en formation professionnelle, les raisons de leur participation (ou de leur abandon), les difficultés éprouvées, les bénéfices perçus. [less ▲]

Adaptives λ-tracking für nichtlineare Systeme mit Relativgrad größer eins

Conference (1999)

Pubertal Growth as a Determinant of Adult Height in Boys with Constitutional Delay of Growth and Puberty

in Hormone Research (1999), 51(5), 223-9

In boys with constitutional delay of growth and puberty, adult height may be inconsistent with parental (target) height. We aimed at studying which period of growth was important to account for adult ... [more ▼]

In boys with constitutional delay of growth and puberty, adult height may be inconsistent with parental (target) height. We aimed at studying which period of growth was important to account for adult height being above or below target height. In this retrospective study, adult height measured after 20 years in 39 patients was compared with target height and height data obtained at about 6 and 12 years of age and at diagnosis of delayed puberty (mean 14.6 years). Twenty-eight patients were untreated while 11 received testosterone enanthate (50 or 100 mg/month for 6 months). The growth data from both groups were pooled since they were not different. On average, the adult height standard deviation score (-0. 6 +/- 0.8, mean +/- SD) was similar to target height (-0.5 +/- 0.6). There were, however, marked individual differences since adult height varied between 1.7 SD (11 cm) below target height and 1.4 SD (9.5 cm) above target height. Multiple regression analysis showed that the most significant determinant of the difference between adult height and target height was height catch up during puberty (p < 0.002). We conclude that the magnitude of height catch up during puberty is a significant determinant of adult height in boys with constitutional delay of growth and puberty. Thus, optimizing pubertal growth may be a relevant therapeutic aim for adult height in boys with short stature and delayed puberty. Copyrightz1999S. KargerAG,Basel [less ▲]

Auditory evoked potentials in the assessment of central nervous system effects of antimigraine drugs.

in Cephalalgia : An International Journal of Headache (1999), 19(10), 880-5

Because the "intensity dependence" of cortical auditory evoked potentials (IDAP) is under serotonergic control, it can be used to assess central antimigraine effects of 5HT1B/1D agonists. We measured IDAP ... [more ▼]

Because the "intensity dependence" of cortical auditory evoked potentials (IDAP) is under serotonergic control, it can be used to assess central antimigraine effects of 5HT1B/1D agonists. We measured IDAP before and 2 h after naratriptan (5 mg, n = 19) and zolmitriptan (5 mg, n = 19) in healthy volunteers. IDAP was expressed as the amplitude-stimulus intensity function ("ASF slope"). Naratriptan tended to increase ASF slope (mean difference 0.23 +/- 0.62 microV/10 dB, p = 0.06) while zolmitriptan (0.08 +/- 0.95 microV/10 dB, p = 0.35) did not. We assessed the suitability of IDAP for measuring central antimigraine drug effects using repeatability data (see companion paper). We calculated the trade-off between the size of the expected drug effects (ASF slope difference) and the necessary sample size. Because of poor repeatability 36 to 80 subjects are required to detect ASF slope changes in the 0.25-0.5 microV/10 dB range. These data can be used to design trials using IDAP. [less ▲]

Le discours européen du Front national français

Master of advanced studies dissertation (1999)

Carte géologique de Wallonie échelle 1/25.000, Froidchapelle - Senzeille 57/3-4

Cartographic material (1999)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using scientific data produced since the previous edition of Mourlon and Bayet published in 1902 at the ... [more ▼]

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using scientific data produced since the previous edition of Mourlon and Bayet published in 1902 at the scale of 1/40.000 by the "Commission Géologique de Belgique". [less ▲]

Introduction à la biologie des Carapidae

Conference (1999)