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排序方式: 共有178条查询结果,搜索用时 203 毫秒
1.
Nicolas Milazzo Damian Farrow Alexis Ruffault Jean F. Fournier 《Journal of sports sciences》2016,34(16):1547-1556
This study examined the contribution of situational probability information to the perceptual and cognitive processes underlying decision-making behaviour during in situ Karate performance. Experts and novices were required to make decisions about various attacks in different fight scenarios. The order in which the fight situations were presented was modified in order to provide advanced probability information and identify whether fighters were able to use the latter information to make better decisions. Specifically, one of the attacks was repeated every four actions. Results revealed that experts were more accurate and faster than their less skilled counterparts to block and counterattack the opponent. The experts picked up the occurrence of the attack pattern after the fifth repetition whereas novices did not. This enabled experts to improve decision time and decision accuracy. Findings suggest that such superiority could stem from the perceptual and cognitive skills possessed by the experts, thus giving them the opportunity to recognise a situation more easily. This was reinforced by gaze behaviour which demonstrated that experts used a more efficient search strategy involving fewer fixations of longer duration on a lesser number of areas relative to the novices. Moreover, experts generated more refined karate-specific knowledge structures compared with the novices. 相似文献
2.
Processus de preuve et situations de validation 总被引:2,自引:0,他引:2
Nicolas Balacheff 《Educational Studies in Mathematics》1987,18(2):147-176
Résumé Nous étudions les relations entre preuves et contradictions dans la résolution d'un probleme de mathématiques. Cette étude montre la nécessité d'une approche à la fois situationnelle et cognitive, notamment en référence au fonctionnement des connaissances dans l'apprentissage des mathématiques. Ceci nous conduit à distinguer différents stades dans l'évolution des preuves pragmatiques aux preuves intellectuelles. Enfin nous montrons que le dépassement d'une contradiction ne constitue pas nécessairement un progrés cognitif, en particulier nous examinons le traitement d'un contre-exemple par des élèves de quatrième.
Proving processes and situations for validation
A study is made of the relationship between Proofs and Contradictions in mathematics problem-solving. With respect to mathematics learning, we show the necessity for an approach being both situational and cognitive. This study leads to the demarcation of several stages from Pragmatic Proofs to Intellectual Proofs. We then go on to show that overcoming a contradiction does not necessarily constitute cognitive progress. In particular we examine how pupils (13–14 year old) cope with counterexamples.相似文献
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The aim of this study was to assess the effect of stress on a previously acquired motor coordination. Following a longitudinal learning experiment, four participants performed oscillations on a ski simulator, either in normal or stressful conditions. The results showed that the amplitude of the oscillations decreased under stress, but no significant effect was seen regarding coordination, suggesting the strong resistance to stress of overlearned behaviour. Nevertheless, for one participant, a transient regression towards a former stage of learning was observed. This result was consistent with the regression hypothesis formulated by Fuchs (1962). 相似文献
5.
The aim of the present study was to investigate the relationships between the three dimensions of transactive memory (coordination, credibility, and specialization) and performance of collaborating students. A total of 113 students, distributed into groups of two or three, participated in the study. They were required to complete a series of learning tasks during the semester and to write a joint report for each task to be evaluated by their instructors. Afterwards, they were asked to fill out a questionnaire including self-report measures of transactive memory. The results showed a well-established positive relationship between transactive memory and performance based essentially on coordination; also, performance improved linearly as members developed specializations within groups. Implications for future research in collaborative learning are discussed. 相似文献
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Leverrier C Gauthier A Nicolas A Molinaro C 《Research quarterly for exercise and sport》2011,82(3):458-465
The purpose of this study was to observe the effects of a submaximal isometric training program on estimation capacity at 25, 50, and 75% of maximal contraction in isometric action and at two angular velocities. The second purpose was to study the variability of isometric action. To achieve these purposes, participants carried out an isokinetic extension movement of the dominant lower limb during six test sessions and nine training sessions. Following the training program, estimation capacity in the different actions did not improve. However an improvement in performance was observed with a reduction in the variability of submaximal isometric actions. The proprioceptors activated in isometric action seemed to adapt to the training program itself which would promote better adaptation by a greater solicitation of internal feedback. 相似文献
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Rémy Kessler Nicolas Béchet Mathieu Roche Juan-Manuel Torres-Moreno Marc El-Bèze 《Information processing & management》2012
The evolution of the job market has resulted in traditional methods of recruitment becoming insufficient. As it is now necessary to handle volumes of information (mostly in the form of free text) that are impossible to process manually, an analysis and assisted categorization are essential to address this issue. In this paper, we present a combination of the E-Gen and Cortex systems. E-Gen aims to perform analysis and categorization of job offers together with the responses given by the candidates. E-Gen system strategy is based on vectorial and probabilistic models to solve the problem of profiling applications according to a specific job offer. Cortex is a statistical automatic summarization system. In this work, E-Gen uses Cortex as a powerful filter to eliminate irrelevant information contained in candidate answers. Our main objective is to develop a system to assist a recruitment consultant and the results obtained by the proposed combination surpass those of E-Gen in standalone mode on this task. 相似文献
10.
Nicolas Faysse Mohamed Taher Sraïri Mostafa Errahj 《The Journal of Agricultural Education and Extension》2013,19(3):285-299
Abstract Purpose: The study investigated to what extent local farmers' organisations are spaces where farmers discuss, learn and innovate. Design/methodology/approach: Two milk collection cooperatives in Morocco were studied. The study analysed the discussion networks, their impacts on farmers' knowledge and innovation, and the performance of collective action at cooperative level. Findings: In both cooperatives, only two-thirds of the farmers regularly discussed dairy practices with other farmers. Most leaders of one cooperative were acknowledged to be experienced farmers and played key roles as advisors on dairy farming. Farmers' involvement in dialogue networks in this cooperative improved their capacity to innovate in dairy farming, even though their knowledge on some issues related to cattle, health and nutrition was not improved. In the other cooperative, experienced farmers did not share their knowledge and farmers' involvement in dialogue networks at cooperative level had no impact on their knowledge and practices. Dialogue networks and collective action were found to influence each other, since in the first cooperative, collective action was considered by members to be efficient, whereas in the second collective action was limited to milk collection. Practical implications: The study enabled identification of stumbling blocks which need to be addressed to get local farmers’ organisations involved in farmer capacity-building. Originality/value: While the importance of local discussion networks for knowledge creation and diffusion is widely acknowledged, taking such networks into account in farmers' capacity-building programmes in developing countries has been hindered by their informality. Combining the analysis of dialogue networks and collective action proved to be a productive way to assess the potentialities of working with farmers' organisations with the aim of establishing a connection with local discussion networks. 相似文献