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121.
Montassar Tabben Jeremy Coquart Helmi Chaabène Nihel Ghoul Claire Tourny 《Journal of sports sciences》2015,33(8):841-849
The aim of this study was to define the time-motion (i.e., fighting, preparatory and breaking activity), technical (i.e., attack, timed-attack, counterattack, blocking and grasps) and tactical (i.e., upper limb, lower-limb, combination and throwing) profiles of the senior top-level karate competition played under the most recent rules of the International Karate Federation in relation to gender, match outcome and weight categories. Time-motion, tactical actions and technical executions were investigated of senior karatekas (n = 60) during the Karate World Championship. The referee’s decisions caused an overall activity-to-break ratio of ~1:1.5 with a significant difference (P = 0.025) between karateka’s weight categories (light = 1:1.5; middle = 1:2 and heavy = 1:1). High-intensity actions (i.e., attack and defensive actions performed quickly and powerfully) were higher in male compared to female athletes. Top-level karatekas used upper limb techniques more than lower limb ones, with both applied in the head more than in the body. For the high-intensity-actions to pause ratio and the percentage of combined techniques, light weight category was significantly higher than middle weight category. These findings suggest that training programs may need to be specific to the requirements of the gender and weight categories. 相似文献
122.
Ethics and Information Technology - The COVID-19 pandemic has brought the long-standing public health practice of contact tracing into the public spotlight. While contact tracing and case... 相似文献
123.
This work analyzes the evolution of time allocation for agricultural and life science faculty in Tier 1 US research universities from 1975 to 2005. Specifically, it explores the trends with respect to time spent on research versus administrative activities, and shows about a 20% decline in the former and doubling of time spent on the latter. Most of the research time decline is accounted for by increased pre and post-grant administrative efforts and other non-research administrative activities rather than changes in teaching activity. Despite the substantial decrease in time available for research, other key research inputs and overall journal article output per faculty have remained relatively stable over that same time period. These findings raise important concerns regarding whether faculty time is being used sub-optimally relative to other ways in which administrative activities might be completed and scholarly activity might be advanced. 相似文献
124.
Gray J 《Isis; an international review devoted to the history of science and its cultural influences》2011,102(3):511-517
For some years now, the history of modern mathematics and the history of modern science have developed independently. A step toward a reunification that would benefit both disciplines could come about through a revived appreciation of mathematical practice. Detailed studies of what mathematicians actually do, whether local or broadly based, have often led in recent work to examinations of the social, cultural, and national contexts, and more can be done. Another recent approach toward a historical understanding of the abstractness of modern mathematics has been to see it as a species of modernism, and this thesis will be tested by the raft of works on the history of modern applied mathematics currently under way. 相似文献
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Brunson JL 《Journal of deaf studies and deaf education》2008,13(1):77-91
This paper uses data from open-ended, videotaped interviews with 12 deaf people to examine their experiences negotiating access during interactions with legal authorities. In every case, these deaf persons preferred an accommodation that involved the use of an American Sign Language interpreter, and in every case, these accommodations were problematic. Three major themes emerged from the informants' narratives: difficulty obtaining the desired accommodation, dealing with a problematic accommodation, and enduring a partial accommodation. These findings suggest that accommodations involving sign language interpreters are not neutral and transparent and that they often have tangible effects on the experiences of and outcomes for deaf persons in the context of dealing with legal matters. Deaf people have very little control over the accommodation they receive and yet are held fully responsible for ensuring its efficacy. These results are discussed in relation to policies and procedures for ensuring that deaf persons have full access in their interactions with American legal institutions. 相似文献
129.
Mehrunnisa Ahmad Ali Sheikh Abul Qasim Rafiq Jaffer Jeremy Greenland 《International Journal of Educational Research》1993,19(8)
Based on two recent teacher development efforts in Pakistan, this chapter examines efforts to promote teacher collegiality within these initiatives. The chapter first describes relevant contextual differences among schools in Karachi and summarizes the history of the two projects within this context. It then analyzes similarities and differences across these two projects in how they dealt with collegiality and professional development. While participants in both projects made progress in ameliorating extreme forms of teacher isolation and authoritarian relationships, they also discovered that balancing increased collegiality within a hierarchy of responsibilities and rewards is a difficult and elusive goal. 相似文献
130.
Although park naturalists should be inclusive in their attempts to reach a variety of audiences, visitors having a consumptive resource orientation may get overlooked. The activity involvement, place attachment and resource knowledge scores of trout anglers at Montauk State Park (Missouri, USA) were combined into a typology that consisted of four levels of recreation specialization (least, moderately, very and most). This continuum was used to explain anglers’ usage and evaluation of nonformal environmental education services at the park. A total of 532 trout anglers completed questionnaires during the summer of 2003. Results showed that specialized anglers participated more in educational opportunities than those who were less specialized. Each of level of the continuum was mutually exclusive. Nearly three‐fourths of the trout anglers (72.8%) believed that environmental education was important and that the park was doing a good job of providing this type of service. A positive trend between levels of specialization and evaluation of environmental education was observed. This study indicated that a segmentation procedure based on recreation specialization can be useful to accomplish some key park management objectives, such as environmental literacy. 相似文献