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   6833篇
  免费   70篇
  国内免费   4篇
教育   4883篇
科学研究   789篇
各国文化   70篇
体育   442篇
综合类   8篇
文化理论   99篇
信息传播   616篇
  2022年   24篇
  2021年   55篇
  2020年   70篇
  2019年   119篇
  2018年   192篇
  2017年   252篇
  2016年   297篇
  2015年   206篇
  2014年   178篇
  2013年   971篇
  2012年   267篇
  2011年   265篇
  2010年   167篇
  2009年   131篇
  2008年   188篇
  2007年   168篇
  2006年   149篇
  2005年   774篇
  2004年   559篇
  2003年   372篇
  2002年   210篇
  2001年   116篇
  2000年   92篇
  1999年   87篇
  1998年   50篇
  1997年   48篇
  1996年   66篇
  1995年   50篇
  1994年   52篇
  1993年   35篇
  1992年   51篇
  1991年   37篇
  1990年   46篇
  1989年   38篇
  1988年   30篇
  1987年   28篇
  1986年   27篇
  1985年   23篇
  1984年   21篇
  1983年   15篇
  1982年   24篇
  1981年   29篇
  1980年   27篇
  1979年   18篇
  1978年   21篇
  1977年   12篇
  1976年   21篇
  1975年   14篇
  1974年   20篇
  1973年   15篇
排序方式: 共有6907条查询结果,搜索用时 15 毫秒
191.
192.
193.
194.
This paper sets out to appraise (from the perspective of members) the impact of a localized, football-based mental health intervention. Commissioned in late 2015, the ‘Redcar and Cleveland Boot Room (BR)’ was implemented in response to mass redundancy in the local area, coupled with regional suicide rates in men that exceed the national average. Interactive discussions with BR members revealed that: (a) the language of football and shared identity were important for initiating and sustaining engagement in the BR; (b) peer-support and mentoring combined with member-led activities were active ingredients of the BR and (c) that the BR was an effective vehicle for building mental health resilience. This evaluation adds to the evidence base on the value of football as a context to engage adult males in community-based interventions targeting mental health resilience.  相似文献   
195.
196.
197.
Objective:We recently showed that the gender detection tools NamSor, Gender API, and Wiki-Gendersort accurately predicted the gender of individuals with Western given names. Here, we aimed to evaluate the performance of these tools with Chinese given names in Pinyin format.Methods:We constructed two datasets for the purpose of the study. File #1 was created by randomly drawing 20,000 names from a gender-labeled database of 52,414 Chinese given names in Pinyin format. File #2, which contained 9,077 names, was created by removing from File #1 all unisex names that we were able to identify (i.e., those that were listed in the database as both male and female names). We recorded for both files the number of correct classifications (correct gender assigned to a name), misclassifications (wrong gender assigned to a name), and nonclassifications (no gender assigned). We then calculated the proportion of misclassifications and nonclassifications (errorCoded).Results:For File #1, errorCoded was 53% for NamSor, 65% for Gender API, and 90% for Wiki-Gendersort. For File #2, errorCoded was 43% for NamSor, 66% for Gender API, and 94% for Wiki-Gendersort.Conclusion:We found that all three gender detection tools inaccurately predicted the gender of individuals with Chinese given names in Pinyin format and therefore should not be used in this population.  相似文献   
198.
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   
199.
200.
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