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   169篇
  免费   3篇
管理学   16篇
人口学   3篇
理论方法论   33篇
社会学   111篇
统计学   9篇
  2019年   2篇
  2018年   1篇
  2015年   2篇
  2014年   1篇
  2013年   13篇
  2012年   2篇
  2011年   4篇
  2010年   2篇
  2009年   5篇
  2008年   5篇
  2007年   7篇
  2006年   3篇
  2005年   2篇
  2004年   2篇
  2003年   1篇
  2002年   2篇
  2000年   1篇
  1998年   3篇
  1997年   5篇
  1996年   2篇
  1995年   5篇
  1994年   7篇
  1993年   7篇
  1992年   3篇
  1991年   4篇
  1990年   2篇
  1989年   5篇
  1988年   4篇
  1987年   5篇
  1986年   2篇
  1985年   5篇
  1984年   5篇
  1983年   3篇
  1982年   5篇
  1981年   2篇
  1980年   4篇
  1979年   2篇
  1978年   2篇
  1977年   6篇
  1976年   2篇
  1975年   5篇
  1974年   6篇
  1973年   1篇
  1972年   4篇
  1971年   1篇
  1970年   4篇
  1968年   1篇
  1967年   3篇
  1966年   2篇
排序方式: 共有172条查询结果,搜索用时 598 毫秒
161.
162.
The paper provides a method for examining the differences betweenpeople who actively participate in politics as contrasted withthose who are not participants, and those who misreport theirlevel of participation. Application of this method shows thatthe participants and the misreporters share numerous characteristicsthat set them apart from nonparticipants. The main distinguishingcharacteristic of the misreporters is their significantly higherexposure to television. The results lend support to the theorythat one effect of television is to depress routine forms ofpolitical participation, while simultaneously distorting people'sperception of their actual participation in political life.  相似文献   
163.
Les données de recensement sur le marriage au Canada pour la période 1851–1891 sont examinées. La nuptialité canadienne est perçue dans le contexte du type de marriage unique et historique d'Europe occidentale, et la conclusion en est tirée que le niveau de nuptialité au Canada est peu élevé, comme du reste, celui d'Europe occidentale qu'il essaye de suivre. Les éléments qui influencent les tendances et le taux de nuptialité sont discutés avec l'emphase sur les variables démographiques. Les variations inter-provinciales du marriage au xixe siècle sont présentées et analysées.
Census data concerning marriage in Canada for the period from 1851 to 1891 are examined. The Canadian nuptiality experience is viewed in the light of the unique, historical western European marriage pattern, with the finding that Canadian nuptiality levels are low, in keeping with the western European pattern. Factors accounting for nuptiality level and trend are discussed, with a particular focus on demographic variables. Provincial variation in nineteenth-century marriage behaviour is described and analyzed.  相似文献   
164.
In this paper twelve recent studies regarding private rates of return for graduate education are reviewed and evaluated. Possible sources of error due to data base, methodology and interpretation of results are examined and compared. After this has been done, the authors calculate returns to graduate education with spatial distribution problems and job security incorporated in the model. The article concludes that the typical rate of return method has been pushed about as far as it can go and now is the time for the economic profession to develop more meaningful techniques which will allow us to come to grips with the policy issues regarding the level of support for education.  相似文献   
165.
This paper uses some new data on the initial academic placements of new Ph.D. economists to test a quality-adjustment model, which is consistent with the hypothesis that most academic appointments follow a "downstream" pattern. By the use of weighted least squares the authors confirm the importance of the perceived quality of the faculty of the degree granting program, the publishing performance of former graduates of these programs, and the student/faculty ratio of these programs in economics over the period 1960 to 1978. Finally, it is shown that contrary to popular opinion, the extent of the "downstream" pattern has not been magnified in the so-called buyers markets of the 1970's.  相似文献   
166.
167.
168.
In 1993, the National Institutes of Health (NIH) passed The Revitalization Act (Subtitle B) which mandated that all NIH funded clinical trials have “appropriate representation” of minority and women subjects. Our aim was to evaluate the impact of the mandate by examining the reporting and inclusion of minority and female subjects into NIH K-Award funded clinical trials, addressing the minority predominant diagnoses of diabetes and clinical obesity. Using the CRISP search engine and PUBMED, we selected publications published by the National Institute on Aging (NIA) and National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) K-grant recipients during 1989–2004, associated with all the diabetes and obesity clinical trials. Studies were stratified into three timeline categories (1989–1993, pre-mandate; 1993–1996, post-mandate, and 1997–present, well past mandate) to evaluate trends in the recruiting of minorities and women before, during, and after the passing of the Revitalization Act. Of the 165 papers, only 37% disclosed race, a number that did not improve over time (p = .15), whereas 92% disclosed gender. Clinical trials that focused on females increased across the 3 timeframes (p < .001) for diabetes studies but not obesity studies. Overall, disclosure of race declined over the 3 timeframes whereas individually, the disclosure of African Americans improved.  相似文献   
169.
In a model of endogenous fertility where individuals know the probability of child survival but not the final number of survivors, parents do not always formulate a precautionary demand for children. For some utility functions, parents have fewer children than what they would have in a situation in which the number of survivors is known earlier. The properties of the optimal economic policy depend on the degree to which the social welfare function takes ignorance into account. If social welfare is evaluated after parents know how many children survived, the parental response to uncertainty is socially inefficient. Individual decisions then should be corrected through tax or transfer on both births and education. This property helps determine the optimal public response to mortality crisis in the presence of educational externalities.  相似文献   
170.
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