全文获取类型
收费全文 | 374篇 |
免费 | 13篇 |
专业分类
教育 | 307篇 |
科学研究 | 15篇 |
各国文化 | 9篇 |
体育 | 19篇 |
文化理论 | 3篇 |
信息传播 | 34篇 |
出版年
2022年 | 2篇 |
2021年 | 8篇 |
2020年 | 6篇 |
2019年 | 9篇 |
2018年 | 11篇 |
2017年 | 13篇 |
2016年 | 15篇 |
2015年 | 7篇 |
2014年 | 11篇 |
2013年 | 96篇 |
2012年 | 10篇 |
2011年 | 9篇 |
2010年 | 6篇 |
2009年 | 8篇 |
2008年 | 13篇 |
2007年 | 6篇 |
2006年 | 17篇 |
2005年 | 6篇 |
2004年 | 11篇 |
2003年 | 8篇 |
2002年 | 7篇 |
2001年 | 5篇 |
2000年 | 7篇 |
1999年 | 10篇 |
1998年 | 7篇 |
1997年 | 3篇 |
1996年 | 3篇 |
1995年 | 4篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 3篇 |
1990年 | 10篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 5篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1977年 | 2篇 |
1973年 | 2篇 |
1972年 | 2篇 |
1968年 | 2篇 |
1967年 | 3篇 |
1915年 | 1篇 |
1900年 | 1篇 |
1838年 | 1篇 |
排序方式: 共有387条查询结果,搜索用时 31 毫秒
1.
Perception of kinematic characteristics of tennis strokes for anticipating stroke type and direction
The purpose of this study was to determine the sources of visual information used by highly skilled tennis players in anticipating their opponent's shots. In Experiment 1, motion analysis of the strokes showed that the relative motion between the racquet and forearm was different between the ground strokes and lobs, but there were no reliable kinematic differences when shot direction was varied. In Experiment 2, 12 skilled tennis players observed the opponent hitting strokes in a normal video or in a point-light display with different segments occluded. Players' anticipation accuracy was not degraded by the use of the point-light display. Occluding the racquet and forearm significantly reduced the participant's ability to determine the type of stroke produced. 相似文献
2.
3.
Barney Wainwright Carlton Brian Cooke John Paul O’Hara 《Journal of sports sciences》2017,35(14):1451-1458
ABSTRACTThe purpose of the study was to assess the validity and inter-bike reliability of 10 Wattbike cycle ergometers, and to assess the test–retest reliability of one Wattbike. Power outputs from 100 to 1000 W were applied using a motorised calibration rig (LODE) at cadences of 70, 90, 110 and 130 rev · min?1, which created nineteen different intensities for comparison. Significant relationships (P < 0.01, r2 = 0.99) were found between each of the Wattbikes and the LODE. Each Wattbike was found to be valid and reliable and had good inter-bike agreement. Within-bike mean differences ranged from 0.0 W to 8.1 W at 300 W and 3.3 W to 19.3 W at 600 W. When taking into account the manufacturers stated measurement error for the LODE (2%), the mean differences were less than 2%. Comparisons between Wattbikes at each of the nineteen intensities gave differences from 0.6 to 25.5 W at intensities of 152 W and 983 W, respectively. There was no significant difference (P > 0.05) between the measures of power recorded in the test–retest condition. The data suggest that the Wattbike is an accurate and reliable tool for training and performance assessments, with data between Wattbikes being able to be used interchangeably. 相似文献
4.
Sharon Parsons 《International Journal of Science Education》2013,35(9):989-1005
This article relates stories of what I have learned by engaging in autobiographical analysis of my work as a science educator, over a seven year period. These stories can be described loosely as 'a play with three acts'. During each act I am played by a somewhat different feminist character who is not only influenced by her own pedagogical and philosophical underpinnings (feminisms) but, by her own disciplinary and institutional contexts. The first act presents an historical feminist perspective. The second act can be described as an emerging postmodern feminist story. The third act is a feminisms story which is where I currently locate my practice. 相似文献
5.
Difrisco E Goodman KE Budin WC Lilienthal MW Kleinman A Holmes B 《The Journal of perinatal education》2011,20(1):28-35
Substantial evidence documents the superiority of breastfeeding for mothers and breastmilk for babies. Although the American Academy of Pediatrics and the U.S. Healthy People 2010 initiative promote breastfeeding, current breastfeeding rates often fall short of recommendations. This study determined factors associated with exclusive breastfeeding 2 to 4 weeks following discharge from a large, urban, academic medical center striving for Baby-Friendly designation. Results indicated that mothers who breastfed within the first hour of birth (61%) were significantly more likely to be exclusively breastfeeding 2 to 4 weeks after discharge. Incorporating care practices that include a number of the "Ten Steps to Successful Breastfeeding," as recommended by the Baby-Friendly Hospital Initiative, may increase the duration of exclusive breastfeeding after discharge. 相似文献
6.
Joanna Higgins Ro Parsons 《International Journal of Science and Mathematics Education》2011,9(2):503-522
Intervention at scale with the aim of improving student participation, engagement and outcomes in mathematics education is
a challenge for educational policy makers and reformers. This article argues that an iterative annual cycle of policy formulation,
implementation and evaluation enabled ongoing adjustments to the strategic focus, the professional development model and the
system infrastructure as the New Zealand Numeracy Development Project was taken to scale. The analysis draws on the project’s
evaluation data over a 6-year period to demonstrate how adjustments were made over time to the pedagogical tools and to the
professional development processes. The ongoing development of knowledge supported the management of strategic risks in taking
the project to scale: the ongoing appropriation of adequate levels of resourcing to support the school-based professional
development model and the availability of system-wide expertise for effective implementation. The analysis suggests that conceptualising
implementation as an interdependent and interrelated component of an iterative policy process and as an opportunity for knowledge
building ensured a continuing focus on student outcomes. The dynamic approach to the policy process appeared central to building
this intervention’s effectiveness and feasibility at scale. 相似文献
7.
Carlton J. Fong Joanna Gilmore Tershia Pinder-Grover Molly Hatcher 《Journal of Further & Higher Education》2019,43(3):363-380
As current graduate instructors of labs and class discussions, teaching assistants (TAs) play a critical role in Science, Technology, Engineering, and Math (STEM) undergraduate education, especially as some graduate students may choose a faculty career in the future. Because of the importance of TAs and their development as scholars and instructors, we sought to determine the most effective methods of preparing engineering TAs at two research universities. We compare the impact of a teaching orientation with one of four teaching development programmes (Pedagogy Course, Advanced Practice Teaching, Workshop Attendance with Written Reflection, or Mid-Semester Student Feedback with Written Reflection) on engineering TAs’ teaching efficacy and definitions of active learning. Results indicated that the Pedagogy Course consistently increased TAs’ teaching efficacy and attitudes toward teaching compared with the other programmes. We also found that stand-alone Mid-Semester Student Feedback with Written Reflection enhanced TAs’ efficacy for reflection and beliefs about teaching. We discuss implications for providing teaching development for graduate students and directions for future research. 相似文献
8.
Patrick R. Parsons 《广播与电子媒介杂志》2013,57(3):354-365
For the last 20 years, scholarly and popular accounts of the development of cable television have recounted the story of John Walson, Sr., who claimed to have started the first CATV system in June of 1948 in Mahanoy City, Pennsylvania. When Walson died in March of 1993, newspapers around the country credited him with starting the nation's first cable system and even “founding”; the industry. The claim, however, has always been clouded by questions and a lack of documentation. This paper reports the results of an investigation of the Walson story. It concludes that, as bright and promising as the Walson tale may be, it probably is not true. At the very least, the preponderance of evidence suggests that Walson got his start in the community antenna television business in late 1950, about the same time as many others around the country and, importantly, probably after another group of businessmen already had begun a system in Mahanoy City itself. 相似文献
9.
Carlton J. Whitehead 《College Teaching》2013,61(2):146-147
10.
Conclusion Differences in achievement under the two methods in the acquisition of information and in the ability to apply information
to novel situations were in favor of the film-presentation method, and were large enough to be significant at the 2 and 5
percent levels of confidence respectively. Therefore, under the conditions of this experiment, joint pupil-teacher film production
was not as effective in producing achievement in the learning outcomes measured as the film-presentation method. As regards
retention of learning, the experimenter concluded that neither method was superior. It was also found that the film-production
method was more costly, and that most pupils preferred it even though they did not always feel that they learned the most
science by that method.
How effective is the use of student film production for the teaching of content in a subject matter area? This study shows
the superiority of conventional film presentation techniques over such joint pupil-teacher film production. Carlton W. H.
Erickson is director of the audio-visual center and associate professor of education at the University of Connecticut. The
article is based on a doctoral dissertation at the Boston University School of Education, entitled, “The Effectiveness of
Joint Pupil-Teacher Motion Picture Production as a Method of Teaching General Science.” 相似文献