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The constraints of a computer algebra system (CAS) generally induce limitations on its usage. Via the pedagogical features
implemented in such a system, “motivating constraints” can appear, encouraging advanced theoretical learning, providing a
broader mathematical knowledge and more profound mathematical understanding. We discuss this issue, together with two examples
from Calculus, which show an important feature of an instrumentation process. 相似文献
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Thierry Chevaillier 《Higher Education》2001,41(1-2):49-75
In France, where most higher education institutions are in the public sector, permanent academic staff at universities and other higher education institutions are tenured and enjoy a broad individual autonomy. The number of staff on short-term contracts is limited. Most part-time staff are drawn from professionals, business executives, and administrators – in both the public and private sectors. In recent decades, the number of teaching-only faculty expanded rapidly as tenured secondary school teachers were transferred to higher education institutions. As universities have acquired some autonomy, especially in academic matters, recruitment and promotion of staff combine elements of centralisation at the national level with local processes. Some degree of pay differentiation has been introduced through a growing use of supplementary compensation. As the system evolves toward increased self-governance of institutions, the autonomy enjoyed by the faculty is seen by administrators as an obstacle to the development of institutional policies. 相似文献
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Marjolaine Astier Thierry Weissland Jean Marc Vallier Didier Pradon Eric Watelain Arnaud Faupin 《Sports Engineering》2018,21(1):43-51
This study aimed to compare the effects of synchronous (SYN) vs asynchronous (ASY) modes of wheelchair propulsion in field sprint tests on performance and biomechanical parameters. Seven elite wheelchair basketball players performed two separate (SYN and ASY) straight-line 20-m sprints. ASY increased sprint time and decreased push frequency compared to SYN (p < 0.05). Peak velocity and total force for the mean of the last three pushes were higher in SYN. Rate of rise was higher in SYN for the first, second and third pushes (p < 0.05). No significant difference was found for peak power and mean work. SYN mode induces better performance (13% difference in speed). However, the increase in rate of rise, thus the expansion of the total force when gripping the hand rim, push frequency and total force in SYN modes seems to expand the risk of developing musculoskeletal disorders during manual wheelchair propulsion for upper limb joints than ASY. 相似文献
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Nelly Joye Lucie Broc Thierry Olive Julie Dockrell 《Scientific Studies of Reading》2013,17(2):129-160
ABSTRACTSpelling difficulties often occur in children with developmental language disorder (DLD), the extent and drivers of these difficulties are underspecified. Meta-analyses were conducted to address this gap. We identified child-based factors (age, language spoken, profile of difficulties) and task-based factors (text production or dictation) as potential moderators of the impact of DLD on spelling performance. Thirty-two studies were analyzed, including 984 children with DLD. Large differences between the spelling of children with DLD and their age-matched peers were found. The average mean effect size was ?1.42, 95% confidence interval [?1.60, ?1.24]. Heterogeneity was large. Effect size estimates were larger when participants had additional phonological or reading difficulties than when they did not. No differences were found between participants with DLD and their language-matched peers. The results are discussed with respect to the underlying processes that impact on spelling across languages. Specific recommendations for future studies are made. 相似文献
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Throughout the world, the financing of education is in a state of crisis, a condition made even more acute by the simultaneous appearance of a doctrinal crisis with regard to the ends and the utility of education. For European higher education, the situation calls for the diversification of funding mechanisms. The public authorities which up until now have born most of the burden of higher education financing must transfer a goodly portion of the burden to users, i.e., students and parents, and to the private sector. Various methods for financial diversification are explored as well as different formulae for user‐financing. 相似文献
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Thierry Dana-Picard Ivy Kidron Meir Komar Joseph Steiner 《European Journal of Engineering Education》2006,31(4):373-381
Jerusalem College of Technology (JCT) is a multi-campus institution with identical syllabi for courses in every campus. Moreover, learning at JCT requires at the same time synchronous and asynchronous learning and teaching. For some introductory courses in Mathematics for Engineering students, websites have been built and now upgraded in order to fit the requirements due to multiple campuses. The original triple function model ‘homepage-tutorial-mailing list’ had to be modified in various directions, in order to fit the students' needs and the central role of the course coordinator. We discuss here the structure and management of the websites and the contribution of these supplementary materials towards teaching efficiency and towards students' better learning skills. 相似文献
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Thierry Devos Jean-Claude Deschamps Loraine Comby 《European Journal of Psychology of Education - EJPE》1994,9(1):55-67
What does the category or the term “young people” evoke for teenagers who identify themselves in terms of their social group memberships? On the basis of two studies we were able to demonstrate that whereas for apprentices (positioned between school and the world of work) youth is defined in terms of various activities — one is young by virtue of what one is doing, for those pursuing studies in senior high school (the “lycéens”), one is young by virtue of how one thinks. In addition, while apprentices tend to value the group, high school students value the individual above all else. 相似文献
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Thierry Debanne 《Journal of sports sciences》2013,31(7):705-713
Abstract The aims of this study were to (1) investigate the influence of general anthropometric variables, handball-specific anthropometric variables, and upper-limb power and strength on ball-throwing velocity in a standing position (νball), and (2) predict this velocity using multiple regression methods. Forty-two skilled male handball players (age 21.0 ± 3.0 years; height = 1.81 ± 0.07 m; body mass = 78.3 ± 11.3 kg) participated in the study. We measured general anthropometric variables (height, body mass, lean mass, body mass index) and handball-specific anthropometric parameters (hand size, arm span). Upper-limb dynamic strength was assessed using a medicine ball (2 kg) throwing test, and power using a one-repetition maximum bench-press test. All the variables studied were correlated with ball velocity. Medicine ball throwing performance was the best predictor (r = 0.80). General anthropometric variables were better predictors (r = 0.55–0.70) than handball-specific anthropometric variables (r = 0.35–0.51). The best multiple regression model accounted for 74% of the total variance and included body mass, medicine ball throwing performance, and power output in the 20-kg bench press. The equation formulated could help trainers, athletes, and professionals detect future talent and test athletes' current fitness. 相似文献