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   15365篇
  免费   109篇
  国内免费   10篇
教育   10434篇
科学研究   1329篇
各国文化   166篇
体育   1534篇
综合类   21篇
文化理论   105篇
信息传播   1895篇
  2022年   104篇
  2021年   133篇
  2020年   273篇
  2019年   349篇
  2018年   402篇
  2017年   467篇
  2016年   412篇
  2015年   277篇
  2014年   353篇
  2013年   2728篇
  2012年   304篇
  2011年   343篇
  2010年   262篇
  2009年   298篇
  2008年   278篇
  2007年   273篇
  2006年   247篇
  2005年   229篇
  2004年   472篇
  2003年   362篇
  2002年   388篇
  2001年   247篇
  2000年   260篇
  1999年   208篇
  1998年   100篇
  1997年   125篇
  1996年   152篇
  1995年   139篇
  1994年   130篇
  1993年   128篇
  1992年   180篇
  1991年   180篇
  1990年   164篇
  1989年   215篇
  1988年   176篇
  1987年   207篇
  1986年   179篇
  1985年   232篇
  1984年   191篇
  1983年   173篇
  1982年   152篇
  1981年   133篇
  1980年   110篇
  1979年   175篇
  1978年   139篇
  1977年   121篇
  1976年   139篇
  1975年   103篇
  1974年   118篇
  1971年   107篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
    
Research on news coverage of social protest has yielded evidence of a “protest paradigm,” a framework of common news attributes that contribute to the marginalizing of protesters as social deviants. Analysis here investigates whether adherence to the protest paradigm varies by structural characteristics of the communities in which news organizations originate. More specifically, news organizations in less pluralistic communities may exhibit lower tolerance for social conflict than news organizations in more pluralistic communities. This research compares newspaper coverage of social protest from communities with varied levels of pluralism. Results showed that newspapers in less pluralistic communities were more critical of protesters when local government was the target and were less likely to quote protesters in stories. Further, newspapers in less pluralistic communities were more critical of protesters when stories were on the front page than those appearing elsewhere in the newspaper. Implications for understanding the protest paradigm and influences of community structure on news coverage patterns were explored.  相似文献   
992.
In a period of fiscal constraint, when assumptions about the library as place are being challenged, administrators question the contribution of every expense to student success. Libraries have been successful in migrating resources and services to a digital environment accessible beyond the library. What is the role of the library as place when users do not need to visit the building to utilize library services and resources? We argue that the college library building's core role is as a space for collaborative learning and community interaction that cannot be jettisoned in the new normal.  相似文献   
993.
The purpose of this article is to study how WebTV channel additions influence the following relationship dimensions between a broadcasting company and its consumers: brand knowledge, brand satisfaction, direct relationship investments, and indirect relationship investments. A survey of broadcast consumers indicated positive effects of WebTV channel additions on all 4 brand relationship dimensions. The findings also indicate that brand satisfaction, direct relationship investments, and indirect relationship investments mediate the effect of WebTV channel additions on customers' use of the broadcaster's main channel. The implication of the results is that WebTV channel additions have the potential to strengthen consumer-brand relationships and that WebTV channel additions seem to complement rather than substitute a broadcast company's main channel. Based on the results, WebTV channel additions are recommended as a channel strategy for broadcasting companies. Similar studies in other industries and settings are suggested before the results can be generalized more broadly.  相似文献   
994.
995.
Varda Langholz Leymore's Hidden Myth: Structure and Symbolism in Advertising (New York: Basic Books, 1975—$10.00).

John S. Wright and John E. Mertes's Advertising's Role ie Society. (St. Paul, Minn.: West Publishing Co., 1974—price not given, paper).

Allan M. Cartter's Ph.D's and the Academic Labor Market (New York: McGraw-Hill, 1976—$12.50).  相似文献   
996.
Objective:The researchers used the flipped classroom model to develop and conduct a systematic review course for librarians.Setting:The research took place at an academic health sciences library.Method:A team of informationists developed and conducted a pilot course. Assessment informed changes to both course components; a second course addressed gaps in the pilot.Conclusion:The flipped classroom model can be successful in developing and implementing a course that is well rated by students.  相似文献   
997.
998.
Within the framework of numerical modelling and multi-objective control of partial differential equations, in this work we deal with the problem of determining the optimal location of a new industrial plant. We take into account both economic and ecological objectives, and we look not only for the optimal location of the plant but also for the optimal management of its emissions rate. In order to do this, we introduce a mathematical model (a system of nonlinear parabolic partial differential equations) for the numerical simulation of air pollution. Based on this model, we formulate the problem in the field of multi-objective optimal control from a cooperative viewpoint, recalling the standard concept of Pareto-optimal solution, and pointing out the usefulness of Pareto-optimal frontier in the decision making process. Finally, a numerical algorithm – based on a characteristics/Galerkin discretization of the adjoint model – is proposed, and some numerical results for a hypothetical situation in the region of Galicia (NW Spain) are presented.  相似文献   
999.
    
The Oregon State University Valley Library has been open 24 hours per day, five days per week, during regular academic terms since 2010. The authors collected survey data during 2012 to explore how students used the hours and whether they perceived that the provision of 24/5 hours contributes to their academic success. Nearly 90% of the respondents believed that their use of the overnight hours made a difference in their performance. The demographic, usage, and perception of value data collected provide a useful snapshot of overnight usage in this exploratory study.  相似文献   
1000.
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