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   13785篇
  免费   215篇
  国内免费   11篇
教育   9536篇
科学研究   1687篇
各国文化   118篇
体育   1047篇
综合类   17篇
文化理论   161篇
信息传播   1445篇
  2022年   92篇
  2021年   142篇
  2020年   214篇
  2019年   288篇
  2018年   408篇
  2017年   427篇
  2016年   405篇
  2015年   275篇
  2014年   377篇
  2013年   2280篇
  2012年   331篇
  2011年   319篇
  2010年   308篇
  2009年   267篇
  2008年   287篇
  2007年   289篇
  2006年   278篇
  2005年   235篇
  2004年   267篇
  2003年   235篇
  2002年   243篇
  2001年   323篇
  2000年   343篇
  1999年   265篇
  1998年   145篇
  1997年   183篇
  1996年   180篇
  1995年   123篇
  1994年   136篇
  1993年   120篇
  1992年   203篇
  1991年   189篇
  1990年   216篇
  1989年   212篇
  1988年   185篇
  1987年   196篇
  1986年   178篇
  1985年   210篇
  1984年   155篇
  1983年   133篇
  1982年   125篇
  1981年   113篇
  1980年   113篇
  1979年   180篇
  1978年   131篇
  1977年   115篇
  1976年   94篇
  1975年   93篇
  1974年   95篇
  1973年   92篇
排序方式: 共有10000条查询结果,搜索用时 328 毫秒
101.
Persistent school shootings have generated ongoing pressure to assess and enhance crisis communication effectiveness via strategies such as resilience-building and post-crisis restoration. A network perspective offers a robust, multilevel approach for examining complex information flows among community, campus, and individual actors affected by crises. Drawing on relational and structural embeddedness and Uncertainty Management Theory, we offer nine propositions that help explain structural and relational changes in a network over time. Although theoretically driven, these propositions are primarily functional, offering practical implications for safety officials and administrators trying to understand, prepare for, and respond to crises. Thus, we suggest measures and recommendations to improve information flow, uncertainty management, and resilience before, during, and after a crisis.  相似文献   
102.
The problem of the construction of the optimal model of the automated control system of a Russian higher-education institution (the ACS of an RHEI) is studied. This term appeared in the 1970s–1980s and served as the beginning of a project that covered more than 50 of the largest higher-education institutions of the country and is also relevant today. Two main approaches to construction of an automated control system of Russian higher-education institutions are specified, viz., the development of a system using its own resources and the use of the product from a third-party developer. Examples of the application of these approaches are given and the structure of the elements (modules) of the systems is described. The necessity to search for the optimal structure of the elements included in the ACS of an RHEI is specified for most educational organizations taking their dimensions into account and their specific sectoral character, as well as the total expenditures for the acquisition (development) and support of the systems. An example of the structure of the optimal model and a third (combined) approach to its construction is given.  相似文献   
103.
The main aspects of the creation of a monitoring system for the research activities of the members of a higher-education institution are considered. The scientific activities of the lecturers and members of Turgenev Orel State University is used as the basis. It is expected that this system will be an efficient tool for optimal managerial decisions at all levels.  相似文献   
104.
The analysis results for the basic indicators of innovative activities in the All-Russian Institute for Scientific and Technical Information (VINITI), Russian Academy of Science, are given. Suggestions for optimization are provided and the plan of innovative activities of VINITI is drawn on the basis on the analysis results, which is aimed at the further development of the institute.  相似文献   
105.
106.
We conduct an analysis of 1835 pledges to 10 music production projects hosted on the largest Brazilian crowdfunding platform, namely the Catarse Web site, and we assess the relation between the fundraising accumulation period, the donor–entrepreneur distance and the propensity of donors to back projects. Our results suggest a significantly negative association between distance and the value of capital pledged to projects, which is consistent with the notion that the entrepreneur’s network of close contacts might play a central role in funding. Furthermore, our results contradict the idea that crowdfunding reduces the inhibiting effect of donor–entrepreneur distance. In addition, the results show that a long project exposure is associated with higher values of pledges. These results suggest practical implications for the study of crowdfunding as a financing platform. This study contributes to the literature on the use of crowdfunding as an alternative funding source in a major emerging market.  相似文献   
107.
In this article, Bradley Wade Bishop sets forth the unspoken premise that public libraries that offer desired services to their constituents are going to succeed. This article has many specific examples of emergency and continuing services that small public libraries provide. It also suggests the need for extensive research on successful libraries which illustrate all sorts of rules about how to meet the future successfully.  相似文献   
108.
109.
110.
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