Cadre conceptuel pour la recherche dans les collèges canadiens

Dans le contexte de l’économie postindustrielle du 21e siècle, basée sur le savoir, les collèges du Canada subissent une pression accrue afin d’intégrer la recherche, tout particulièrement la recherche appliquée, dans leur mission d’éducation axée sur l’emploi, d’une part, et sur le développement économique régional, d’autre part. En réponse à cette pression, la recherche collégiale connaît une croissance exceptionnelle, mais elle manque toutefois de structure et de coordination. Cet article a pour but de proposer un cadre conceptuel qui fournit des balises claires et précises, afin de coordonner le développement dans les collèges canadiens d’une culture de la recherche qui soit productive et durable. Une analyse conceptuelle des types de recherche en enseignement supérieur a mené l’auteur de cet article à l’élaboration d’un premier modèle, à partir duquel les effets de l’implantation d’une culture de recherche adaptée aux collèges canadiens ont été évalués. Par la suite, l’auteur a révisé les six concepts clés du modèle (les visées, les types, la gouvernance, le personnel, le financement et les retombées) pour en arriver à proposer un cadre conceptuel qui tient compte du contexte particulier dans lequel évolue la recherche collégiale au Canada

A conceptual framework for research at Canadian colleges

Publié comme vol. 24, no 1, fall 2010 de la revue Pédagogie collégiale.Bibliographie

Phased Array Feed Calibration, Beamforming and Imaging

Phased array feeds (PAFs) for reflector antennas offer the potential for increased reflector field of view and faster survey speeds. To address some of the development challenges that remain for scientifically useful PAFs, including calibration and beamforming algorithms, sensitivity optimization, and demonstration of wide field of view imaging, we report experimental results from a 19 element room temperature L-band PAF mounted on the Green Bank 20-Meter Telescope. Formed beams achieved an aperture efficiency of 69% and system noise temperature of 66 K. Radio camera images of several sky regions are presented. We investigate the noise performance and sensitivity of the system as a function of elevation angle with statistically optimal beamforming and demonstrate cancelation of radio frequency interference sources with adaptive spatial filtering.Comment: 19 pages, 13 figure

Two-Dimensional Quantum XY Model with Ring Exchange and External Field

We present the zero-temperature phase diagram of a square lattice quantum spin 1/2 XY model with four-site ring exchange in a uniform external magnetic field. Using quantum Monte Carlo techniques, we identify various quantum phase transitions between the XY-order, striped or valence bond solid, staggered Neel antiferromagnet and fully polarized ground states of the model. We find no evidence for a quantum spin liquid phase.Comment: 4 pages, 4 figure

Formation and evolution of S0 galaxies: a SAURON case study of NGC7332

We present SAURON integral-field observations of the S0 galaxy NGC7332. Existing broad-band ground-based and HST photometry reveals a double disk structure and a boxy bulge interpreted as a bar viewed close to edge-on. The SAURON two-dimensional stellar kinematic maps confirm the existence of the bar and inner disk but also uncover the presence of a cold counter-rotating stellar component within the central 250 pc. The Hbeta and [OIII] emission line maps show that the ionised gas has a complex morphology and kinematics, including both a component counter-rotating with respect to the stars and a fainter co-rotating one. Analysis of the absorption line-strength maps show that NGC7332 is young everywhere. The presence of a large-scale bar can explain most of those properties, but the fact that we see a significant amount of unsettled gas, together with a few peculiar features in the maps, suggest that NGC7332 is still evolving. Interactions as well as bar-driven processes must thus have played an important role in the formation and evolution of NGC7332, and presumably of S0 galaxies in general.Comment: 12 pages, 12 figures, accepted for publication in MNRA