全文获取类型
收费全文 | 5526篇 |
免费 | 50篇 |
国内免费 | 56篇 |
专业分类
教育 | 3843篇 |
科学研究 | 833篇 |
各国文化 | 18篇 |
体育 | 273篇 |
综合类 | 128篇 |
文化理论 | 72篇 |
信息传播 | 465篇 |
出版年
2023年 | 4篇 |
2022年 | 23篇 |
2021年 | 65篇 |
2020年 | 45篇 |
2019年 | 63篇 |
2018年 | 101篇 |
2017年 | 152篇 |
2016年 | 212篇 |
2015年 | 197篇 |
2014年 | 169篇 |
2013年 | 308篇 |
2012年 | 313篇 |
2011年 | 324篇 |
2010年 | 210篇 |
2009年 | 189篇 |
2008年 | 204篇 |
2007年 | 214篇 |
2006年 | 174篇 |
2005年 | 808篇 |
2004年 | 590篇 |
2003年 | 458篇 |
2002年 | 288篇 |
2001年 | 212篇 |
2000年 | 139篇 |
1999年 | 49篇 |
1998年 | 19篇 |
1997年 | 13篇 |
1996年 | 14篇 |
1995年 | 16篇 |
1994年 | 5篇 |
1993年 | 1篇 |
1992年 | 6篇 |
1991年 | 4篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1987年 | 4篇 |
1985年 | 3篇 |
1983年 | 5篇 |
1982年 | 1篇 |
1981年 | 3篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 4篇 |
1977年 | 1篇 |
1976年 | 4篇 |
1974年 | 1篇 |
排序方式: 共有5632条查询结果,搜索用时 15 毫秒
81.
82.
IPv4, the workhorse protocol of the currently popular TCP/ IP protocol suite, is fast becoming obsolete. The exponential growth
of the Internet is the main reason that has required the creation of the next generation of Internet Protocol-IPv6. IPv6 is
much more flexible and promises to take care of the address space and security issues in the foreseeable future.
Part 1 of the paper lays the foundation of the various issues involved in designing the Internet Protocol and motivates the
need for an upgraded version of this protocol. 相似文献
83.
In June 2015, Melissa Harris-Perry infamously analogized the possibility of trans-Black identity to the reality of transgender identity. Such analogies happen often and are used mostly for the benefit of learning about a less familiar form of identity. Building from a recent article by Suthakaranm, Filsinger, and White (2013) that presented a compelling argument for the use of analogies as an experiential learning tool in multicultural education, we advance the conversation by distinguishing a particular form of analogies: identity analogies. We explore the benefits and challenges of utilizing identity analogies as a tool for multicultural educators within U.S. higher education. 相似文献
84.
85.
文章通过运用文献资料法、社会调查法等研究方法对在农村开展老年人太极拳项目的背景,农村老年群体参加太极拳锻炼的动机特征,以及农村老年群体中开展太极拳的优势等几方面进行剖析,最后得出,在社会主义新农村与全民健身背景下在农村大力推广老年太极拳是老年群体的需要,更是社会的需求。在农村老年太极拳的开展将成为建设新农村社区体育的重要部分,而且也是农村精神文明建设、提倡健康文明生活方式和建设社会主义新农村的重要内容之一。 相似文献
86.
87.
为提高速滑直道技术教学水平,采用教学实验法针对不同层次教学对象,对速滑直道技术进行分层次教学法研究。实验结果表明,按学生速滑基础和学生要求,并在教学过程中运用想、练的结合性方式进行分层次教学与训练,可以有效的提高各层次学生速滑技术水平和滑冰能力。创新后的直道教学法为普及高校速滑运动、落实以速滑为主的全民健身计划发展纲要和培养不同层次的滑冰人才,提供了教学与训练参考。 相似文献
88.
Marc Torka 《Minerva》2018,56(1):59-83
Funding is an important mechanism for exercising influence over ever more parts of academic systems. In order to do so, funding agencies attempt to export their functional and normative prerequisites for financing to new fields. One essential requirement for fundees is then to construct research processes in the form of a project beforehand, one that is limited in time, scope and content. This article demonstrates how the public funding of doctoral programs expands this model of project research from experienced academics to the socialization process for the new academic generation. This process of “projectification” underlies funding-driven institutional changes in doctoral training. A multi-level comparative study of German policies, funding mechanisms and organizational frameworks for doctoral training demonstrates the emergence of a specific model of predefined PhD projects. The investigation of doctoral training practices reveals that socio-epistemic preconditions regulate whether research fields adopted or rejected this demanding model. This result contradicts widespread claims about a radical change in doctoral training and suggests focusing on the actual practices of field-specific doctoral research. 相似文献
89.
Marc Lenglet 《Journal of Cultural Economy》2017,10(5):481-484
90.
Henry Brown Brian Dawson Martyn J. Binnie Hugh Pinnington Marc Sim Tristan D. Clemons 《European Journal of Sport Science》2017,17(6):741-747
This study compared markers of muscle damage and inflammation elevated by a matched-intensity interval running session on soft sand and grass surfaces. In a counterbalanced, repeated-measures and crossover design, 10 well-trained female athletes completed 2 interval-based running sessions 1 week apart on either a grass or a sand surface. Exercise heart rate (HR) was fixed at 83–88% of HR maximum. Venous blood samples were collected pre-, post- and 24?h post-exercise, and analysed for myoglobin (Mb) and C-reactive protein (CRP). Perceptual ratings of exertion (RPE) and muscle soreness (DOMS) were recorded immediately post- and 24?h post-exercise. A significant time effect showed that Mb increased from pre- to post-exercise on grass (p?=?.008) but not on sand (p?=?.611). Furthermore, there was a greater relative increase in Mb on grass compared with that on sand (p?=?.026). No differences in CRP were reported between surfaces (p?>?.05). The HR, RPE and DOMS scores were not significantly different between conditions (p > .05). These results suggest that in response to a matched-intensity exercise bout, markers of post-exercise muscle damage may be reduced by running on softer ground surfaces. Such training strategy may be used to minimize musculoskeletal strain while still incurring an equivalent cardiovascular training stimulus. 相似文献