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31.
The effect of time of day on ratings of perceived exertion (RPE) at various intensities of cycling exercise, both below and above the ventilatory threshold, was studied in 32 subjects, 18 to 35 years of age. The ventilatory threshold occurred at the same (p greater than .05) mean (+/- SD) work rate in the morning (110.6 +/- 27.0 watts) and in the afternoon (111.9 +/- 23.9 watts) and was perceived as equally strenuous (p greater than .05) in the morning (RPE = 13.8 +/- 2.4) and in the afternoon (RPE = 13.6 +/- 2.8). At intensities below the ventilatory threshold, RPE was the same (p greater than .05) in the morning and in the afternoon; above the ventilatory threshold, RPE was lower (p less than .05) in the morning. We conclude that, during incremental submaximal cycling exercise above the ventilatory threshold, a particular work rate is perceived as less strenuous in the morning than in the afternoon. About 20% of this difference in RPE is explained by lower ventilatory demands in the morning. 相似文献
32.
Theon E. Hill 《Communication quarterly》2017,65(3):354-376
In this article, I examine Barack Obama’s use of collective memory during his 2007 campaign speech in Selma, Alabama. Specifically, I argue that Obama appeals to collective memory to challenge the Black community’s relationship to the past. He reframed the memory of the Civil Rights Movement in a manner favorable to his political aspirations. While this frame was politically expedient, it weakened Black political agency. It robbed the Black community of crucial rhetorical resources used to challenge structural inequalities in society. This article offers insight into the complex relationship between metaphor and collective memory. Specifically, I interrogate the role of metaphor as a crucial site where public memory is formed, disrupted, and rearticulated. Furthermore, I consider the implications of his use of memory for the future of the Black freedom struggle. 相似文献
33.
Play is a behavioral phenomenon most commonly observed in the young of both solitary and social species. Documentation of play in cetaceans varies across species and settings. Cetacean play behavioral repertoires include a broad range of actions, such as the manipulation of diverse objects, blowing bubbles, chasing conspecifics, and swimming in spirals through the water. As is common in research on animal play, cetacean play has been grouped into categories by its form, including locomotor play, object play, and different variations of social play, such as affiliative games, play fighting, and socio-sexual play. Research has primarily focused on recording the topography of cetacean play and the demographics of the individuals engaging in play. However, these classifications are insufficient to address the possible developmental and societal functions of cetacean play behaviors, or the mechanisms with which play behaviors are spread between conspecifics and acquired by young members of cetacean populations. This article applies several developmental and social learning theories in order to organize current knowledge and guide future research. 相似文献
34.
Paul L. Hill Rose A. Shaw Jan R. Taylor Brittan L. Hallar 《Innovative Higher Education》2011,36(1):19-27
Although progress has been made, greater efforts are needed to promote faculty diversity at the college and university levels,
especially in STEM fields. Thus, it is important to elucidate best practices both for increasing awareness of diversity issues
pertaining to higher education and for implementing change. This article focuses on the outcomes of a diversity workshop for
college and university faculty hosted by the West Virginia Higher Education Policy Commission, Division of Science and Research.
More specifically, it elucidates how participation in the workshop translated into practice at the faculty participants’ home
institutions. 相似文献
35.
The aims of this study are threefold. First, we investigate the influence of the parent-initiated motivational climate upon elite junior athletes' perfectionistic cognitions. Second, we examine whether the coach-created motivational climate predicts additional variance in elite junior athletes' perfectionistic cognitions beyond the effects associated with the parent-initiated motivational climate. Third, we test the moderating role of athletes' gender and age in the relationship between the parent-initiated and coach-created motivational climates and athletes' perfectionistic cognitions. A total of 190 elite junior athletes (mean age 15.2 years, s?=?1.5, range 10-18) completed the Parent-Initiated Motivational Climate Questionnaire-2 (White & Duda, 1993), the Perceived Motivational Climate in Sport Questionnaire-2 (Newton, Duda, & Yin, 2000), and the Perfectionistic Cognitions Inventory (Flett, Hewitt, Blankstein, & Gray, 1998). Regression analyses revealed that mother- and father-initiated worry-conducive climates, the father-initiated success-without-effort climate, and the coach-created performance motivational climate predicted male athletes' perfectionistic cognitions. Female athletes' perfectionistic cognitions were predicted by the mother-initiated worry-conducive climate, father-initiated learning-enjoyment climate, and both dimensions of the coach-created climate. Finally, athletes' gender emerged as a significant moderator of the mother-initiated worry-conducive climate and athletes' perfectionistic cognitions relationship. Findings confirm that the parent-initiated motivational climate is a significant predictor of athletes' perfectionism-related thoughts, and provide initial support for the influence of the coach-created motivation climate over children's perfectionistic cognitions. 相似文献
36.
37.
Believe that the findings and recommendations of the Elton Committee have much to offer schools for children with emotional and behavioural difficulties, as well as mainstream schools. They outline the way they have introduced 'assertive discipline' into behaviour management policy of the school. 相似文献
38.
The No Child Left Behind Act of 2001 requires states to establish accountability systems that are both valid and reliable. If one follows the language of the law literally, there is no design that will meet both requirements. If one interprets the law more flexibly, it is possible to create such a design. States will need to approach the problem carefully if they are going to appropriately balance the various probabilities of making incorrect decisions about schools. 相似文献
39.
40.
The development of education for medical librarians 总被引:1,自引:0,他引:1
B Hill 《Bulletin of the Medical Library Association》1972,60(1):121-132
Formal education for medical library specialization was initiated only thirty-two years ago despite the fact that medical libraries received special treatment for many years before that time. The philosophy of specialized education was developed as early as 1925, and this theory was finally put into practice beginning with the medical reference and bibliography course given at Columbia in 1939. In the late 1940s the requisites for medical librarians were formalized into a certification code by the Medical Library Association, and since that time specialized education for medical librarians has grown stronger using this code as a guideline. This education consists basically of two types-formal library school courses and internship programs which offer a working-while-learning situation. Now that the established programs have a few years of history, there is a need for evaluation and restatement of goals and methods. 相似文献