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   8636篇
  免费   218篇
  国内免费   11篇
管理学   1126篇
劳动科学   1篇
民族学   73篇
人才学   3篇
人口学   701篇
丛书文集   330篇
理论方法论   701篇
综合类   550篇
社会学   3318篇
统计学   2062篇
  2023年   48篇
  2022年   38篇
  2021年   68篇
  2020年   122篇
  2019年   180篇
  2018年   199篇
  2017年   301篇
  2016年   220篇
  2015年   149篇
  2014年   237篇
  2013年   1495篇
  2012年   285篇
  2011年   318篇
  2010年   249篇
  2009年   265篇
  2008年   257篇
  2007年   268篇
  2006年   283篇
  2005年   244篇
  2004年   203篇
  2003年   172篇
  2002年   205篇
  2001年   228篇
  2000年   216篇
  1999年   201篇
  1998年   145篇
  1997年   136篇
  1996年   115篇
  1995年   107篇
  1994年   142篇
  1993年   105篇
  1992年   128篇
  1991年   134篇
  1990年   120篇
  1989年   106篇
  1988年   91篇
  1987年   90篇
  1986年   92篇
  1985年   93篇
  1984年   92篇
  1983年   70篇
  1982年   72篇
  1981年   49篇
  1980年   59篇
  1979年   63篇
  1978年   48篇
  1977年   48篇
  1976年   38篇
  1975年   47篇
  1974年   40篇
排序方式: 共有8865条查询结果,搜索用时 640 毫秒
941.
This three‐act historical ethnodrama rereads the discourse surrounding Custer's Last Stand, arguably the most written‐about military event in American history. It compares and contrasts First Nation oral history accounts, official military records, and select painterly representations of the “Battle of Little Bighorn.” It asks if there was a real “last stand” or only a flawed grand narrative (see Denzin 2011).  相似文献   
942.
943.
A simultaneous test for the location and scale parameters of the Cauchy distribution is considered based on selected order statistics.. It is shown that optimum spacings that maximise the Pitman ARE of the test coincide with that of the optimum spacings for the estimation problem.  相似文献   
944.
The implications of environmental change for migration are little understood. Migration as a response to climate change could be seen as a failure of in situ adaptation methods, or migration could be alternatively perceived as a rational component of creative adaptation to environmental risk. This paper frames migration as part of an adaptation response to climate change impacts to natural resource condition and environmental hazards. Thresholds will be reached by communities after which migration will become a vital component of an effective adaptation response. Such changes to migration patterns have the potential to undermine migration policy unless appropriate preparations are undertaken. This paper describes an approach to assist researchers to frame how climate change will influence migration by critically analysing how thresholds of fundamental change to migration patterns could be identified, primarily in relation to two case studies in Nepal and Thailand. Future policy for internal and international migration could be guided by the analysis of such thresholds of non-linear migration and resourced effectively to ensure that socio-economic and humanitarian outcomes are maximised.  相似文献   
945.
946.
Consider a life testing experiment in which n units are put on test, successive failure times are recorded, and the observation is terminated either at a specified number r of failures or a specified time T whichever is reached first. This mixture of type I and type II censoring schemes, called hybrid censoring, is of wide use. Under this censoring scheme and the assumption of an exponential life distribution, the distribution of the maximum likelihood estimator of the mean life θ is derived. It is then used to construct an exact lower confidence bound for θ.  相似文献   
947.
The authors develop four exercises to further explore themes that are discussed in the Waldner and Dobratz article “Graffiti as a Form of Contentious Political Participation (Sociology Compass 7: 377–389),” including Mothers of the Plaza de Mayo (Madres de Plaza de Mayo), From Famous Political Speech (“Ich Bin Ein Berliner”) to Graffiti: “Ich bin Berliner”, “Protest, Violence, and Graffiti in Greek Politics,” and “Political Speech or Just Tagging: Billboards and Culture Jamming.” The authors encourage students to explore them such as motivations for graffiti, the difficulty in discerning writer intent, the use of graffiti as a form of political protest, and the historical and geographical context of graffiti. The authors provide links to YouTube videos and supplementary readings.  相似文献   
948.
Index     
  相似文献   
949.
Although computers are universal in the classroom, nearly 20 million children in the United States do not have computers in their homes. Surprisingly, only a few previous studies explore the role of home computers in the educational process. Home computers might be very useful for completing school assignments, but they might also represent a distraction for teenagers. We use several identification strategies and panel data from the two main U.S. data sets that include recent information on computer ownership among children—the 2000–2003 Current Population Survey (CPS) Computer and Internet Use Supplements matched to the CPS basic monthly files and the National Longitudinal Survey of Youth 1997 (NLSY97)—to explore the causal relationship between computer ownership and high school graduation and other educational outcomes. Teenagers who have access to home computers are 6–8 percentage points more likely to graduate from high school than teenagers who do not have home computers after controlling for individual, parental, and family characteristics. We generally find evidence of positive relationships between home computers and educational outcomes using several identification strategies, including controlling for typically unobservable home environment and extracurricular activities in the NLSY97, fixed effects models, instrumental variables, and including future computer ownership and falsification tests. Home computers may increase high school graduation by reducing nonproductive activities, such as truancy and crime, among children in addition to making it easier to complete school assignments (JEL I2).  相似文献   
950.
Consider partitions of a given set A of n distinct points in general position in ℝ d into parts where each pair of parts can be separated by a hyperplane that contains a given set of points E. We consider the problem of counting and generating all such partitions (correcting a classic 1967 result of Harding about the number of such partitions into two parts). Applications of the result to partition problems are presented.  相似文献   
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