全文获取类型
收费全文 | 1604篇 |
免费 | 22篇 |
国内免费 | 7篇 |
专业分类
教育 | 1032篇 |
科学研究 | 178篇 |
各国文化 | 38篇 |
体育 | 210篇 |
综合类 | 12篇 |
文化理论 | 18篇 |
信息传播 | 145篇 |
出版年
2023年 | 10篇 |
2022年 | 13篇 |
2021年 | 33篇 |
2020年 | 50篇 |
2019年 | 79篇 |
2018年 | 103篇 |
2017年 | 80篇 |
2016年 | 74篇 |
2015年 | 53篇 |
2014年 | 55篇 |
2013年 | 295篇 |
2012年 | 67篇 |
2011年 | 68篇 |
2010年 | 62篇 |
2009年 | 48篇 |
2008年 | 46篇 |
2007年 | 47篇 |
2006年 | 32篇 |
2005年 | 38篇 |
2004年 | 29篇 |
2003年 | 37篇 |
2002年 | 37篇 |
2001年 | 30篇 |
2000年 | 23篇 |
1999年 | 11篇 |
1998年 | 13篇 |
1997年 | 6篇 |
1996年 | 10篇 |
1995年 | 5篇 |
1994年 | 12篇 |
1993年 | 10篇 |
1992年 | 9篇 |
1991年 | 9篇 |
1990年 | 7篇 |
1989年 | 9篇 |
1987年 | 8篇 |
1985年 | 7篇 |
1984年 | 7篇 |
1983年 | 7篇 |
1982年 | 5篇 |
1981年 | 3篇 |
1979年 | 6篇 |
1978年 | 4篇 |
1977年 | 8篇 |
1976年 | 5篇 |
1974年 | 6篇 |
1971年 | 3篇 |
1963年 | 4篇 |
1955年 | 5篇 |
1917年 | 4篇 |
排序方式: 共有1633条查询结果,搜索用时 15 毫秒
1.
2.
3.
首先对中国知网数据库中收录的以警察体育为主题的文献时序分布进行梳理,通过论文发表时间与数量的变量关系对比,分析揭示该研究领域的历史脉络、发展速度以及演变规律。随后利用信息可视化软件Bibexcel绘制出警察体育研究领域的核心作者、研究机构、高被引文献的知识图谱,阐释该领域的研究结构、力量分布以及合作平台建设等情况。最后运用词频分析、共词聚类和可视化法生成关键词共现网络图谱,挖掘、提炼文献数据背后的规律与逻辑,捕捉警察体育研究领域中的研究热点和前沿动态,并在此基础上深入探讨警察体育未来研究的基本趋势和发展方向。 相似文献
4.
Tertiary Education and Management - Although they have been developed for a variety of purposes, classification systems for tertiary or postsecondary education institutions offer a foundation for... 相似文献
5.
Rui-Bing Li Ben Niu Zhi-Guang Feng Jun-Qing Li Pei-Yong Duan Dong Yang 《Journal of The Franklin Institute》2019,356(16):9545-9564
This paper dedicates to dealing with the adaptive neural design problem for uncertain stochastic nonlinear systems with non-lower triangular pure-feedback form and input constraint. On the basis of the mean-value theorem, the pure-feedback structure is first transformed into the desired affine structure, and then the well-known backstepping technology is applied to construct the actual input signal of the controller. Although the considered system has a fairly complex structure, a new adaptive neural tracking controller design frame is established via the flexible application of radial basis function (RBF) neural networks’ (NNs’) structural characteristics. The proposed design frame guarantees the control objective of this paper can be achieved. Finally, a simulation example is given to further illustrate the availability of the proposed control scheme. 相似文献
6.
ABSTRACTCharles Spearman and L. L. Thurstone were pioneers in the field of intelligence. They not only developed methods to assess and understand intelligence, but also developed theories about its structure and function. Methodologically, their approaches were not that distinct, but their theories of intelligence were philosophically very different – and this difference is still seen in modern approaches to intellectual assessment. In this article, we describe their theories of intelligence and then trace how these theories have influenced the development and use of intelligence instruments, paying particular attention to score interpretation. 相似文献
7.
Stefan Altmann Maximilian Kuberczyk Steffen Ringhof Rainer Neumann Alexander Woll 《Sportwissenschaft》2018,48(2):218-227
Background
The purpose of this study was to analyze the relationship between performance test parameters and match-related physical performance in professional soccer players.Methods
To determine physical capacity, 28 male soccer players underwent several performance tests at the start of the seasons 2013/2014, 2014/2015, and 2015/2016. The following parameters were assessed: maximum running velocity (vmax), fixed (v4mmol/l) and individual anaerobic threshold (vIAS) during an incremental treadmill test; 30-m sprint time in a linear sprint test (LS30m); in a repeated-sprint test, the 30-m sprint time (RST30m) and performance decrement (RSTdecr); and countermovement jump height (CMJ). Match physical performance was quantified during the first ten official matches of each season using a computerized, camera-based tracking system. The following measures of match physical performance were considered: top running speed (TS), mean running speed (vØ), total distance covered (TD), number of sprints (SP), number of high-intensity running (HIR), and aerial duels won (AD+). Pearson correlation coefficients were used for statistical analysis.Results
Moderate to very large correlations were found between the majority of performance test parameters and match performance variables, with a variability of correlations across the three seasons. Large relationships across all three seasons were only observed between vmax and TD, vmax and vØ, LS30m and TS as well as RST30m and TS.Conclusion
This study demonstrates the relationship between several performance test parameters and match-related physical performance in professional soccer players, thereby supporting the test parameters’ criterion validity. vmax, LS30m, and RST30m seem to be the most consistent parameters.8.
Creating and disseminating knowledge through research and teaching has long been regarded as the hallmark of the modern university. However, new university business models have called into question the ‘bundling’ of teaching and research, and sustained research on the relationship between teaching and research has found little evidence of an insoluble connection between the two activities. In this article, we explore the relationship between teaching and research from the perspective of universities’ institutional discourse. We use corpus-assisted discourse analysis to examine the relationship between research and teaching as presented in two sets of institutional texts currently influential in UK Higher Education: Research Excellence Framework environment statements and Teaching Excellence Framework provider submissions (a total of 2143 documents and 12,492,071 words). Our findings show that, while universities emphasise the value of research to their teaching, they do not always emphasise (or sometimes even decry) the influence of teaching on their research. We empirically evidence that, according to what universities themselves write in institutional texts, teaching and research are not always in a mutually beneficial entanglement, but often rather a one-way relationship in which research expertise and institutional prestige are used to bolster claims of teaching excellence. This has implications for the communication of both the vision and the purpose of a university in regulatory exercises and wider policy, but also speaks to the broader idea and practice of being a university in the twenty-first century. 相似文献
9.
Tom Geeson-Brown Ben Jones Kevin Till Sarah Chantler Kevin Deighton 《Journal of sports sciences》2020,38(19):2161-2176
ABSTRACT This systematic review and meta-analysis aimed to determine differences in body compositionn between playing standard and age in male rugby union and rugby league athletes. The MOOSE (Meta-analysis of Observational Studies in Epidemiology) guidelines for design, implementation, and reporting were followed. Studies were required to be in male rugby union or league and have body composition as the primary or secondary outcome. Data was required to be presented separately for positional groups and body composition presented as whole-body. A systematic search was performed in PubMed, Cochrane Library, MEDLINE, SPORTDiscus, and CINHAHL via EBSCOhost. 57 studies were included for meta-analysis. Results highlighted significantly higher fat-free mass in senior elite than senior sub-elite or junior elite athletes for all RU and RL forwards. Small and non-significant differences were found in fat mass between rugby union playing standards and age categories. Rugby league senior elite forwards had less fat mass than junior elite forwards. Practitioners should prioritise training and nutritional strategies that maximise fat-free mass development, especially in junior elite cohorts. 相似文献
10.