全文获取类型
收费全文 | 286篇 |
免费 | 6篇 |
专业分类
教育 | 234篇 |
科学研究 | 7篇 |
各国文化 | 2篇 |
体育 | 8篇 |
文化理论 | 2篇 |
信息传播 | 39篇 |
出版年
2023年 | 2篇 |
2022年 | 5篇 |
2021年 | 5篇 |
2020年 | 10篇 |
2019年 | 15篇 |
2018年 | 13篇 |
2017年 | 17篇 |
2016年 | 16篇 |
2015年 | 8篇 |
2014年 | 10篇 |
2013年 | 83篇 |
2012年 | 6篇 |
2011年 | 8篇 |
2010年 | 3篇 |
2009年 | 6篇 |
2008年 | 10篇 |
2007年 | 5篇 |
2006年 | 4篇 |
2005年 | 2篇 |
2003年 | 6篇 |
2002年 | 2篇 |
2001年 | 6篇 |
2000年 | 4篇 |
1999年 | 3篇 |
1998年 | 2篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 4篇 |
1990年 | 4篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1976年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1953年 | 1篇 |
1938年 | 1篇 |
1934年 | 1篇 |
1903年 | 1篇 |
1899年 | 2篇 |
1865年 | 1篇 |
排序方式: 共有292条查询结果,搜索用时 15 毫秒
11.
12.
Jemima Grace Spathis Mark James Connick Emma Maree Beckman Peter Anthony Newcombe Sean Michael Tweedy 《Journal of sports sciences》2015,33(8):863-871
Paralympic throwing events for athletes with physical impairments comprise seated and standing javelin, shot put, discus and seated club throwing. Identification of talented throwers would enable prediction of future success and promote participation; however, a valid and reliable talent identification battery for Paralympic throwing has not been reported. This study evaluates the reliability and validity of a talent identification battery for Paralympic throws. Participants were non-disabled so that impairment would not confound analyses, and results would provide an indication of normative performance. Twenty-eight non-disabled participants (13 M; 15 F) aged 23.6 years (±5.44) performed five kinematically distinct criterion throws (three seated, two standing) and nine talent identification tests (three anthropometric, six motor); 23 were tested a second time to evaluate test–retest reliability. Talent identification test–retest reliability was evaluated using Intra-class Correlation Coefficient (ICC) and Bland–Altman plots (Limits of Agreement). Spearman’s correlation assessed strength of association between criterion throws and talent identification tests. Reliability was generally acceptable (mean ICC = 0.89), but two seated talent identification tests require more extensive familiarisation. Correlation strength (mean rs = 0.76) indicated that the talent identification tests can be used to validly identify individuals with competitively advantageous attributes for each of the five kinematically distinct throwing activities. Results facilitate further research in this understudied area. 相似文献
13.
Sara Baratchi Francisco J. Tovar-Lopez Khashayar Khoshmanesh Megan S. Grace William Darby Juhura Almazi Arnan Mitchell Peter McIntyre 《Biomicrofluidics》2014,8(4)
Shear stress is the major mechanical force applied on vascular endothelial cells by blood flow, and is a crucial factor in normal vascular physiology and in the development of some vascular pathologies. The exact mechanisms of cellular mechano-transduction in mammalian cells and tissues have not yet been elucidated, but it is known that mechanically sensitive receptors and ion channels play a crucial role. This paper describes the use of a novel and efficient microfluidic device to study mechanically-sensitive receptors and ion channels in vitro, which has three independent channels from which recordings can be made and has a small surface area such that fewer cells are required than for conventional flow chambers. The contoured channels of the device enabled examination of a range of shear stresses in one field of view, which is not possible with parallel plate flow chambers and other previously used devices, where one level of flow-induced shear stress is produced per fixed flow-rate. We exposed bovine aortic endothelial cells to different levels of shear stress, and measured the resulting change in intracellular calcium levels ([Ca2+]i) using the fluorescent calcium sensitive dye Fluo-4AM. Shear stress caused an elevation of [Ca2+]i that was proportional to the level of shear experienced. The response was temperature dependant such that at lower temperatures more shear stress was required to elicit a given level of calcium signal and the magnitude of influx was reduced. We demonstrated that shear stress-induced elevations in [Ca2+]i are largely due to calcium influx through the transient receptor potential vanilloid type 4 ion channel. 相似文献
14.
15.
16.
Grace Feuerverger 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2011,25(4):357-375
The objective of this research study is to offer a glimpse into the lives of some newly-arrived students of different racial,
linguistic and religious backgrounds as they confront the process of immigration and therefore personal and social displacement
within the context of a Toronto inner-city high school. These students carry with them hidden but enduring scars that influence
all aspects of their educational lives. In many cases their experience is steeped in trauma. Using auto-ethnographic methodology,
this research is devoted to giving voice to these students who inhabit a space filled with suffering and loss but also resilience
and cautious hope. If we really care about these vulnerable students in our classrooms, we must rethink and reshape our understanding
of teaching and learning that is more fundamentally linked to the lived experiences of students coming from places of war
and other oppressions. These issues are crucial for the future of nation-building and citizenship education in pluralistic
Western societies such as Canada, both in and out of school. 相似文献
17.
Grace Oakley Mark Pegrum Shannon Johnston 《Asia-Pacific Journal of Teacher Education》2014,42(1):36-50
E-portfolios are being introduced into initial teacher education programmes internationally to help pre-service teachers build records of their learning journeys and develop into reflective practitioners; to allow them to assemble collections of evidence of their achievements against graduate standards, which can function as digital CVs; and to facilitate the seeding of personal learning networks that will support lifelong learning after graduation. Despite certain tensions between these aims, the potential benefits of e-portfolios make them an increasingly popular choice in teacher education. In this article, we discuss the introduction of Wi-Fi-based e-portfolios into a Master of Teaching programme at an Australian university. These served primarily as developmental e-portfolios, or personal learning environments (PLEs), and were designed to place particular emphasis on reflective practice. We describe how the e-portfolios were perceived and used by pre-service teachers in the first year of their implementation, and indicate the challenges and limitations encountered. Lessons learnt from the implementation are outlined and recommendations are proposed. 相似文献
18.
In 2004 a collaborative, statewide outreach project in Delaware was undertaken where consumer health librarians were embedded in public libraries. In order to explore the effect of the embedded librarians on the quality of health information provision, unobtrusive reference visits were made to half of the public libraries in the state. The query “Do vaccines cause autism?” was posed to library staff; resources provided were recorded. In 67 percent of visits, public library staff provided authoritative health information resources. It appears the embedded librarians had a positive residual effect on the provision of authoritative health resources for addressing an ambiguous query. 相似文献
19.
Initial-link response allocation in concurrent chains becomes less extreme as the absolute duration of the initial links increases
(Fantino, 1969). The present study asked whether initial-link duration affected how quickly response allocation reached asymptote
(i.e., acquisition of preference). Six pigeons were trained on a concurrent-chains procedure in which the terminal links were
fixed-interval (FI) 8 sec FI 16 sec or FI 16 sec FI 8 sec and were reversed every 20 sessions. Across conditions, all possible
combinations of transitions between variable-interval (VI) 8-sec (short) and VI 24-sec (long) initial-link schedules were
studied. Overall, the rate of acquisition was faster when the durations of the initial links preceding the reversal were short
rather than long, and when the durations of the initial links following the reversal were long rather than short. By contrast,
initial-link duration had no effect on acquisition or asymptotic measures of temporal control of terminal-link responding.
These results support the core principle of delay-reduction theory (Fantino, 1969) that the impact of a conditioned reinforcer
varies directly with initial-link duration, but also suggest that temporal learning during the terminal links proceeds independently
of initial-link duration. nt]mis|These data were presented at the annual meeting of the Association for Behavior Analysis,
Boston, May 2004. 相似文献
20.
Autobiographical queer life narratives are communicative spaces where queer teachers take up personal issues of being, becoming, and belonging in contextual and relational analyses of their situated experiences. In this work w/e consider the challenges and risks involved in this research, which, when shared and probed in classroom spaces, is a dangerous exposition of the queer self. With these challenges and risks in mind, w/e examine how our narratives provide fugitive knowledge to inform a pedagogy of ‘resist-stance’ that recognizes, respects, and engages queer identity, difference, history and culture. W/e provide examples of this pedagogy, discussing teaching strategies currently being used to connect the personal, the political and the pedagogical in classroom spaces. W/e also speak of the difficulties of living out this pedagogy as transformative teaching to transgress queer erasure in hetero-normative educational practice. 相似文献