Situations d'apprentissage d'entraîneurs de natation concernant l'enseignement des habiletés de vie des jeunes

L’objectif principal du présent mémoire visait à explorer d’où proviennent les savoirs des entraîneurs de natation concernant les habiletés de vie qu’ils enseignent aux jeunes qu’ils encadrent. Pour ce faire, une étude qualitative de cas multiples a été réalisée. Au total, 12 entraîneurs de natation œuvrant auprès d’adolescents-athlètes d’élite et reconnus dans leur milieu pour leur approche centrée sur l’athlète et sur son développement personnel ont été rencontrés. La discussion était orientée d’après les trois pôles de situations d’apprentissage du modèle de Trudel, Culver et Werthner (2013) : (a) les situations d’apprentissage assistées, (b) les situations d’apprentissage non assistées et (c) les situations d’apprentissage internes. L’analyse des données a permis de mettre en lumière les diverses situations d’apprentissage dans lesquelles les entraîneurs ont mentionné avoir appris à enseigner des habiletés de vie. Les résultats révèlent que les entraîneurs ont mentionné avoir appris des trois types de situations, mais principalement par des situations d’apprentissage internes et non assistées. Parmi les situations d’apprentissage internes, la réflexion sur l’expérience comme athlète et la réflexion sur l’expérience comme entraîneur ont été les plus souvent citées. Du côté des situations d’apprentissage non assistées, ce sont les discussions et l’observation qui ont été les plus souvent mentionnées par les entraîneurs. En guise de conclusion, des pistes pour de futures recherches sont présentées ainsi qu’un partage de l’expérience acquise par l’étudiante au cours de la réalisation de ce mémoire.The principal objective of this study was to explore swim coaches’ learning situations regarding the development of life skills in youth. In order to do so, a multiple-case study was conducted. In total, 12 coaches who work with elite adolescent-athletes and who are recognised in their field for having approaches centered on their athletes and their personal development were interviewed. The discussion was guided by Trudel, Culver and Werthner (2013) coaches’ learning model, which presents three types of learning situations: (a) mediated learning situations, (b) unmediated learning situations, and (c) internal learning situations. Data analysis reveal that the coaches’ reported having learned from the three types of learning situations and that mostly they mentioned having learned from internal and unmediated learning situations. Reflecting on past athletic experiences and past coaching experiences were the most cited internal learning situations. As for unmediated learning situations, coaches shared having learned through discussions with others and through observation. To conclude, ideas for future research are presented as well as the student-author’s summary of what she has learned through this research’s process

Deep-inelastic production of heavy quarks

Deep-inelastic production of heavy quarks at HERA, especially charm, is an excellent signal to measure the gluon distribution in the proton at small $x$ values. By measuring various differential distributions of the heavy quarks this reaction permits additional more incisive QCD analyses due to the many scales present. Furthermore, the relatively small mass of the charm quark, compared to the typical momentum transfer $Q$, allows one to study whether and when to treat this quark as a parton. This reaction therefore sheds light on some of the most fundamental aspects of perturbative QCD. We discuss the above issues and review the feasibility of their experimental investigation in the light of a large integrated luminosity.Comment: 10 pages, uses epsfig.sty, five ps figures included. To appear in the proceedings of the workshop Future Physics at HERA, eds. G. Ingelman, A. De Roeck and R. Klanner, DESY, Hamburg, 199

Determination of the asymptotic behaviour of the heavy flavour coefficient functions in deep inelastic scattering

Using renormalization group techniques we have derived analytic formulae for the next-to-leading order heavy-quark coefficient functions in deep inelastic lepton hadron scattering. These formulae are only valid in the kinematic regime Q^2 >> m^2, where Q^2 and m^2 stand for the masses squared of the virtual photon and heavy quark respectively. Some of the applications of these asymptotic formulae will be discussed.Comment: Latex with two PostScript figures and style file. Presentation at the Rheinsberg Meeting on Higher Order QCD and QE

Recombination Models

We review the current status of recombination and coalescence models that have been successfully applied to describe hadronization in heavy ion collisions at RHIC energies. Basic concepts as well as actual implementations of the idea are discussed. We try to evaluate where we stand in our understanding at the moment and what remains to be done in the future.Comment: Plenary Talk at Quark Matter 2004, submitted to J. Phys. G, 8 pages, 3 figure

Deep-inelastic production of heavy quarks

Deep-inelastic production of heavy quarks at HERA, especially charm, is an excellent signal to measure the gluon distribution in the proton at small $x$ values. By measuring various differential distributions of the heavy quarks this reaction permits additional more incisive QCD analyses due to the many scales present. Furthermore, the relatively small mass of the charm quark, compared to the typical momentum transfer $Q$, allows one to study whether and when to treat this quark as a parton. This reaction therefore sheds light on some of the most fundamental aspects of perturbative QCD. We discuss the above issues and review the feasibility of their experimental investigation in the light of a large integrated luminosity

Status and Prospects of Top-Quark Physics

The top quark is the heaviest elementary particle observed to date. Its large mass of about 173 GeV/c^2 makes the top quark act differently than other elementary fermions, as it decays before it hadronises, passing its spin information on to its decay products. In addition, the top quark plays an important role in higher-order loop corrections to standard model processes, which makes the top quark mass a crucial parameter for precision tests of the electroweak theory. The top quark is also a powerful probe for new phenomena beyond the standard model. During the time of discovery at the Tevatron in 1995 only a few properties of the top quark could be measured. In recent years, since the start of Tevatron Run II, the field of top-quark physics has changed and entered a precision era. This report summarises the latest measurements and studies of top-quark properties and gives prospects for future measurements at the Large Hadron Collider (LHC).Comment: 76 pages, 35 figures, submitted to Progress in Particle and Nuclear Physic