首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   673篇
  免费   5篇
教育   425篇
科学研究   92篇
各国文化   8篇
体育   54篇
综合类   1篇
文化理论   3篇
信息传播   95篇
  2024年   3篇
  2023年   4篇
  2022年   10篇
  2021年   18篇
  2020年   23篇
  2019年   45篇
  2018年   53篇
  2017年   36篇
  2016年   35篇
  2015年   17篇
  2014年   44篇
  2013年   143篇
  2012年   27篇
  2011年   32篇
  2010年   19篇
  2009年   27篇
  2008年   21篇
  2007年   8篇
  2006年   19篇
  2005年   9篇
  2004年   7篇
  2003年   7篇
  2002年   6篇
  2001年   8篇
  2000年   5篇
  1999年   1篇
  1998年   6篇
  1997年   4篇
  1995年   3篇
  1994年   1篇
  1993年   2篇
  1992年   5篇
  1991年   2篇
  1990年   2篇
  1989年   4篇
  1988年   1篇
  1987年   1篇
  1986年   2篇
  1985年   1篇
  1984年   2篇
  1983年   1篇
  1982年   1篇
  1979年   3篇
  1978年   2篇
  1977年   3篇
  1975年   1篇
  1974年   1篇
  1973年   1篇
  1971年   1篇
  1903年   1篇
排序方式: 共有678条查询结果,搜索用时 15 毫秒
131.

Key points

  • Sci‐Hub has made nearly all articles freely available using a black open access model, leaving green and gold models in its dust.
  • Why, after 20 years of effort, have green and gold open access not achieved more? Do we need ‘tae think again’?
  • If human nature is to postpone change for as long as possible, are green and gold open access fundamentally flawed?
  • Open and closed publishing models depend on bundle pricing paid by one stakeholder, the others getting a free ride. Is unbundling a fairer model?
  • If publishers changed course and unbundled their product, would this open a legal, fairer route to 100% open access and see off the pirates?
  相似文献   
132.
Abstract

More than six decades after the end of the Korean War (1950–53), the Democratic People’s Republic of Korea (DPRK) and the Republic of Korea (ROK) continue to face each other across the highly fortified Demilitarized Zone (DMZ) along the 38th parallel on the Korean peninsula. Both Korean governments continue to maintain and reinforce a pan-Korean identity amongst its respective populations. At the same time, both states need to provide its respective citizens with distinct national identities, which obviously requires a politically difficult and highly delicate balancing act. The focus of this paper is on the dominant identity discourses in South Korea. These have been observed, interpreted and analyzed in five international events and festivals that the South hosted over the last three decades: the 1988 Seoul Olympics, the 2002 Soccer World Cup (co-hosted with Japan), the Busan Asian Games in the same year, the 2011 Daegu World Athletic Championships and the 2014 Incheon Asian Games. All these events offered a distinctive nationalist flavour, celebrated tradition and modernity, and emphasized South Korea’s rapid 20th century development and achievements, but also served as a reminder of the ethnic homogeneity of the divided Korean people and the unjust political division of the Korean peninsula.  相似文献   
133.
Civil libertarian doctrine which was dominant during the twentieth century argued that the main goal of freedom of speech was to ensure that the public would be well-informed and actively engage in public deliberation. A literal extension of this claim to the Internet age often justifies the regulation of online speech under the assumption that harmful communication undermines the public interest. This study challenges civil libertarianism and proposes a new thesis of freedom of online speech, which posits that online speech should be understood in terms of a democratic culture where every individual participates freely and without restraints in the process of meaning making that constitute her/him as an autonomous individual. Based on such a theoretical concept, this study identifies three important aspects of online speech freedom – unfettered speech, anonymous speech, and participatory speech – and then compares the status of online speech between South Korea and the United States. This research suggests that a society should understand the unique nature of online speech and then arrange the legal system to fit into it.  相似文献   
134.
135.
136.
137.
ABSTRACT

Objectives: This study aims to test the dimensionality, reliability, and item quality of the revised UCLA loneliness scale as well as to investigate the differential item functioning (DIF) of the three dimensions of the revised UCLA loneliness scale in community-dwelling Chinese and Korean elderly individuals.

Method: Data from 493 elderly individuals (287 Chinese and 206 Korean) were used to examine the revised UCLA loneliness scale. The Research model based on item response theory (IRT) was used to test dimensionality, reliability, and item fit. The hybrid ordinal logistic regression-IRT test was used to evaluate DIF.

Results: Item separation reliability, person reliability, and Cronbach’s alpha met the benchmarks. The quality of the items in the three-dimension model met the benchmark. Eight items were detected as significant DIF items (at α < .01). The loneliness level of Chinese elderly individuals was significantly higher than that of Koreans in Dimensions 1 and 2, while Korean elderly participants showed significantly higher loneliness levels than Chinese participants in Dimension 3. Several collected demographic characteristics and loneliness levels were more highly correlated in Korean elderly individuals than in Chinese elderly individuals.

Conclusion: Analysis using the three dimensions is reasonable for the revised UCLA loneliness scale. Good item quality and the items of this measure suggest that the revised UCLA loneliness can be used to assess the preferred latent traits. Finally, the differences between the levels of loneliness in Chinese and Korean elderly individuals are associated with the factors of loneliness.  相似文献   
138.
139.
How HRT & Exercise provide the Effect of Women Well - being is discussed here with the Presentation about (1) Information o,1 Honmone & HRT; (2) Introduction to Estrogen Replacemen; (3) Review of Relational Studies.  相似文献   
140.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号