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Moresi MP Bradshaw EJ Greene D Naughton G 《Sports biomechanics / International Society of Biomechanics in Sports》2011,10(2):73-84
The aim of this study was to evaluate the reliability of two long jump tasks and their ability to predict 10 m sprint performance in elite adolescent female athletes. Eight junior national-level female track and field athletes completed three standing (SLJ) and reactive long jumps (RLJ) on portable force plates, followed by three 10 m sprints. Intra-class correlation coefficients (ICC) and coefficients of variation (CV) were calculated to examine reliability. Linear regression results identified the best predictor of average and best 10 m sprint time from the jump kinematic and kinetic measures. The ICCs and CVs indicated good reliability for the majority of kinetic measures however, better reliability was reported for the SLJ. The SLJ was a good predictor of best and average 10 m sprint time, with average horizontal power the best predictor of performance (best; R2 = 0.751, p = 0.003, Standard Error of Estimate (SEE)% = 2.2 average; R2 = 0.708, p = 0.005, SEE% = 2.5). 相似文献
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Randa Abbas Vered Vaknin-Nusbaum Ari Neuman Geraldine Mongillo Dorothy Feola Rochelle Goldberg Kaplan 《Cultura y Educación》2013,25(4):730-765
AbstractResearchers have shown an increased interest in the way teachers use their knowledge about language (KAL) to enhance student understanding and learning. This qualitative case study investigated first- and second-grade teachers’ use of KAL in Arabic. We investigated the linguistic transitions from standard Arabic to spoken Arabic made by the teachers during mathematics lessons. The results suggested that Arab-speaking mathematics teachers were aware of the gap between home language (Spoken Arabic) and school language (Modern Standard Arabic) and used linguistic transition as a teaching strategy to develop academic thinking and behaviour among their students. The results suggested that Arab teachers built a non-formal bilingual education programme where the two languages were used to teach mathematics. Despite the requirement to use Modern Standard Arabic, participants bridged the gap between the languages, which suggests an inherent understanding that ‘language and identity are ultimately inseparable’. 相似文献
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Fátima Viteri Geraldine Clarebout Marion Crauwels 《Environmental Education Research》2013,19(5):577-599
While key conceptions and the status of environmental education (EE) have been reported at various international, regional, national and local levels, those in play in the schools of Quito (Ecuador) are still relatively unknown. Of particular interest to this study are private schools: they are considerable in number in Ecuador and elsewhere, yet remain largely underrepresented in national and local studies. Therefore, a survey with a focus on conceptions of EE was administered to teachers (74) and pupils (748) of the third-, fourth- and fifth-years (7–10?years old) of elementary education, in 22 private schools in Quito. Using Sauvé's categorization of conceptual currents in EE, findings suggest a strong conservationist theme among teachers whereas pupils approach EE from both conservationist and naturalist perspectives. In terms of the status of EE, implementation is still limited to classrooms and in teacher professional education and development. Consideration of diverse conceptual currents is strongly recommended in teacher professional development, and the strengthening of EE-related partnerships between schools, homes and communities. 相似文献
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This paper begins by reviewing some of the different models of third-party observation of university teaching that can be found in the literature. Having analysed these, it argues that—if ‘peer’ is taken to indicate equality of status—only one is genuinely a model of peer-observation. It proposes an alternative categorisation of third-party observations of teaching dependant on who controls the information generated by the process. A preferred six-dimensional model based on control by the person being observed of the data-flow, and other procedural aspects, is presented and explored. Evaluative comments, by university teachers who have undertaken the process, are presented to illustrate the benefits of adopting this model. 相似文献
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D'souza HS Dsouza SA Menezes G Venkatesh T 《Indian journal of clinical biochemistry : IJCB》2011,26(2):197-201
Among the heavy metals, lead still remains the major toxic pollutant of the environment. Human exposure to lead can occur
through numerous pathways including air, food, dust, soil, and water. In the present study 14 lead poisoned patients with
non-occupational lead exposure were evaluated. They were followed up and compared against the controls with no history of
lead exposure. The patients had high blood lead levels and symptoms of weakness, dizziness, abdominal pain, generalized body
ache, loss of appetite, and anxiety. Repeated course of chelation therapy helped to bring down their body burden of lead.
Alternative sources for lead exposure can cause severe lead poisoning in general population. Screening and medical management
of such individuals is very important to identify and eliminate sources of lead. The treatment and management requires a thorough
medical evaluation and environmental intervention. 相似文献
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As practical knowledge seems to have a central place in organisational issues, we focus on possibilities of studying and formalising it. From an unusual theoretical perspective, we view practical knowledge as embodied knowing that is only manifest through action in a particular situation. Although this knowledge is largely implicit, we try to make what is articulable explicit. After highlighting the stakes involved in the codification of practices, we review the ontological and epistemological assumptions underlying the method developed. The method is founded on participant observation, a video recording of a situated subjective perspective and an ex post interview using this perspective to aid an actor in making part of his/her practical knowledge explicit. We present its implementation within research on polar expeditions in order to understand how an experienced actor deals with risks. In conclusion, we point out (1) the importance of this kind of data in knowledge management, (2) some lines of further research. 相似文献