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排序方式: 共有336条查询结果,搜索用时 15 毫秒
321.
Learning & Behavior - Fish were allowed to choose, in a T-maze, between various combinations of goalboxes containing either food or a mirror, or nothing. Only food and a mirror maintained... 相似文献
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We examine information sharing among academics during the research process and show it is context dependent because of differences in trade-offs. When researchers respond to specific requests for information or materials, potential future reciprocity is weighed against the current loss of competitiveness, while general sharing intermediate results in an open forum is driven by the need for feedback versus potential misappropriation. We formally model these trade-offs and empirically test for differences using a survey of German and UK bio-scientists. Increased competition has a negative impact on sharing in both contexts. But career stage has an effect only on specific sharing with untenured faculty less likely to share. Further, scientists in larger teams are more likely to share specifically, but less likely to share generally. The importance of patents for one's reputation reduces sharing in both contexts, but the effect is greater for general information sharing. 相似文献
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Josje van Houwelingen Raf M. Antwerpen Ad P. C. Holten Ernst Jan Grift Jerry Westerweel Herman J. H. Clercx 《Sports Engineering》2018,21(4):419-427
In this paper a video-based method to automatically track instantaneous velocities of a swimmer is presented. Single cameras were used to follow a marker (LED) attached to the body. The method is inspired by particle tracking techniques, traditionally used in the field of fluid dynamics, to measure local velocities of a fluid flow. During the validation experiment, a white LED was attached to the hip of a swimmer together with a speedometer. A swimmer performed four different stroke types. The velocity profiles using LED tracking were captured and showed less noise than the speedometer measurements. Only at times when the marker disappeared above the water surface due to body role in front crawl and backstroke swimming did the LED tracking fail to capture the athlete’s motion. The algorithm was tested in a 2D case with a single LED to illustrate the proof of principle, but should be suitable for implementation in a 3D analysis or multiple LED analysis. 相似文献
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The purpose of the present study was to enhance children's self-esteem through a five week self-photography project which provided each child in the experimental group with 60 pictures of himself in different poses. Control group subjects were provided with self-photographs at the end of the project. Fourth grade children were selected for both low subjective self-esteem and low behavioral self-esteem using the Coopersmith Self-Esteem Inventory and Behavior Rating Form. After five weeks of photography sessions, the Self-Esteem Inventory and Behavior Rating Forms were re-administered and pre-and posttest results were compared. The experimental procedure resulted in a significant increase in behavioral self-esteem for the experimental group, but no change in subjective self-esteem. Results were discussed in terms of Cooper-smith's theory of genuine vs. defensive self-esteem, with the speculation that the change in behavioral self-esteem reflected an increase in genuine self-esteem. 相似文献
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Jerry W. Gilley 《Performance Improvement Quarterly》2000,13(4):87-105
According to Kissler (1991), performance management begins by determining why it should take place at all. He believes that performance management helps organizations sustain or improve performance, promote greater consistency in performance evaluation, and provide high‐quality feedback. Performance management helps organizations link evaluations to employee development and to a merit‐based compensation plan. Moreover, it forms a basis for coaching and mentoring, permits individual input during the evaluation process, and allows for a blend of qualitative and quantitative evaluations. Performance management is a process that helps manage employee expectations of job demands and factors that reveal how well the job is done. 相似文献
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