Presentation of assessment tools for evaluating creative learning

Titre de l'écran-titre (visionné le 10 jan. 2013

Présentation des outils pour l'évaluation des apprentissages en créativité

Titre de l'écran-titre (visionné le 10 jan. 2013

Bilan des six premiers mois du projet de l'Assistant des collèges une communauté de pratique en ligne et un service de soutien professionnel aux opérations d'autoévaluation pour l'ordre collégial /

Titre de l'écran-titre (visionné le 20 août 2008).Également disponible en format papier

Bilan des six premiers mois du projet de l'Assistant des collèges une communauté de pratique en ligne et un service de soutien professionnel aux opérations d'autoévaluation pour l'ordre collégial /

Titre de l'écran-titre (visionné le 20 août 2008).Également disponible en format papier

Fine-root production in small experimental gaps in successional mixed boreal forests

The effects of small 10 m x 10 m experimental above-ground gaps on fine-root production for the first two years were studied in three fire-initiated stands of the northwestern mixed broad-leaf-conifer boreal forest of Quebec. The 48-yr-old forest is dominated by Populus tremuloides (Trembling aspen), the 122-yr-old forest by a mixture of P. tremuloides, Abies balsamea (balsam fir) and Picea glauca (white spruce), and the 232-yr-old forest by Thuja occidentalis (eastern white cedar) and A. balsamea, with some P. tremuloides. 40 root-ingrowth bags were installed in different locations in and around each gap (at gap center, 1 to 2 m either side of gap edge and in adjacent control plots). Half of the ingrowth bags were harvested after one year following gap creation, the other half after two years. Roots were sorted into different species grouping. Fine-root production was statistically (P < 0.05) larger in the youngest forest compared to the two older ones after one year, but not after two years. The individual species or groups of species increased, decreased or showed no change in fine-root production in gaps, but overall we did not observe a major shift in species proportion between gap and control plots after two years. Some herbs and also Taxus canadensis seemed to benefit in terms of fine-root growth from such small openings after two years. No statistical differences (P > 0.10) in total fine-root production were found among locations within and outside gaps in either year. However, there was a clear tendency for fine-root production to be smaller in gap center than in the other locations for the two younger successional forests the first year after gap creation. We conclude that small above-ground gaps (i.e. < 100 m2) do not produce a significant and long-lasting below-ground gap in terms of total fine-root production in the successional forests investigated

The Status Of Two New England “Endemic” Carices: Carex Elachycarpa And C. Josselynii (Cyperaceae)

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/149729/1/tax00494.pd

Muscle Sympathetic Nerve Activity Is Related to a Surrogate Marker of Endothelial Function in Healthy Individuals

BACKGROUND: Evidence from animal studies indicates the importance of an interaction between the sympathetic nervous system and the endothelium for cardiovascular regulation. However the interaction between these two systems remains largely unexplored in humans. The aim of this study was to investigate whether directly recorded sympathetic vasoconstrictor outflow is related to a surrogate marker of endothelial function in healthy individuals. METHODS AND RESULTS: In 10 healthy normotensive subjects (3 f/7 m), (age 37+/-11 yrs), (BMI 24+/-3 kg/m(2)) direct recordings of sympathetic action potentials to the muscle vascular bed (MSNA) were performed and endothelial function estimated with the Reactive Hyperaemia- Peripheral Arterial Tonometry (RH-PAT) technique. Blood samples were taken and time spent on leisure-time physical activities was estimated. In all subjects the rate between resting flow and the maximum flow, the Reactive Hyperemic index (RH-PAT index), was within the normal range (1.9-3.3) and MSNA was as expected for age and gender (13-44 burst/minute). RH-PAT index was inversely related to MSNA (r = -0.8, p = 0.005). RH-PAT index and MSNA were reciprocally related to time (h/week) spent on physical activity (p = 0.005 and p = 0.006 respectively) and platelet concentration (PLT) (p = 0.02 and p = 0.004 respectively). CONCLUSIONS: Our results show that sympathetic nerve activity is related to a surrogate marker of endothelial function in healthy normotensive individuals, indicating that sympathetic outflow may be modulated by changes in endothelial function. In this study time spent on physical activity is identified as a predictor of sympathetic nerve activity and endothelial function in a group of healthy individuals. The results are of importance in understanding mechanisms underlying sympathetic activation in conditions associated with endothelial dysfunction and emphasise the importance of a daily exercise routine for maintenance of cardiovascular health