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   89795篇
  免费   2966篇
  国内免费   3篇
管理学   12342篇
民族学   539篇
人才学   26篇
人口学   6929篇
丛书文集   523篇
教育普及   1篇
理论方法论   9431篇
现状及发展   1篇
综合类   2096篇
社会学   42118篇
统计学   18758篇
  2023年   507篇
  2021年   569篇
  2020年   1517篇
  2019年   2224篇
  2018年   2080篇
  2017年   3166篇
  2016年   2390篇
  2015年   2062篇
  2014年   2638篇
  2013年   18863篇
  2012年   2359篇
  2011年   2158篇
  2010年   1958篇
  2009年   2167篇
  2008年   2015篇
  2007年   1840篇
  2006年   2062篇
  2005年   2271篇
  2004年   2138篇
  2003年   1888篇
  2002年   1971篇
  2001年   1984篇
  2000年   1784篇
  1999年   1684篇
  1998年   1498篇
  1997年   1336篇
  1996年   1300篇
  1995年   1317篇
  1994年   1279篇
  1993年   1267篇
  1992年   1260篇
  1991年   1190篇
  1990年   1169篇
  1989年   1030篇
  1988年   1104篇
  1987年   980篇
  1986年   882篇
  1985年   1064篇
  1984年   1123篇
  1983年   1011篇
  1982年   928篇
  1981年   855篇
  1980年   805篇
  1979年   871篇
  1978年   763篇
  1977年   684篇
  1976年   653篇
  1975年   623篇
  1974年   515篇
  1973年   438篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
391.
392.
393.
This study tested Super's model of career adaptability by examining the relationships between career development concerns, values, and role salience among 881 men employed full-time in a cement factory. They responded to the Adult Career Concerns Inventory, the Values Inventory, and the Salience Inventory. The inter-correlations of the resulting scores were appropriately small and coincided with theoretical predictions. A principal components analysis clarified the latent structure of the relations between and among the scales. The results supported both Super's model of career adaptation and his model for Career Development Assessment and Counseling.  相似文献   
394.
395.
Impacts of complex emergencies or relief interventions have often been evaluated by absolute mortality compared to international standardized mortality rates. A better evaluation would be to compare with local baseline mortality of the affected populations. A projection of population-based survival data into time of emergency or intervention based on information from before the emergency may create a local baseline reference. We find a log-transformed Gaussian time series model where standard errors of the estimated rates are included in the variance to have the best forecasting capacity. However, if time-at-risk during the forecasted period is known then forecasting might be done using a Poisson time series model with overdispersion. Whatever, the standard error of the estimated rates must be included in the variance of the model either in an additive form in a Gaussian model or in a multiplicative form by overdispersion in a Poisson model. Data on which the forecasting is based must be modelled carefully concerning not only calendar-time trends but also periods with excessive frequency of events (epidemics) and seasonal variations to eliminate residual autocorrelation and to make a proper reference for comparison, reflecting changes over time during the emergency. Hence, when modelled properly it is possible to predict a reference to an emergency-affected population based on local conditions. We predicted childhood mortality during the war in Guinea-Bissau 1998-1999. We found an increased mortality in the first half-year of the war and a mortality corresponding to the expected one in the last half-year of the war.  相似文献   
396.
397.
398.
399.
400.
This article examines trends in divorce attitudes of young adult women in the United States by educational attainment from 1974 to 2002. Women with 4‐year college degrees, who previously had the most permissive attitudes toward divorce, have become more restrictive in their attitudes toward divorce than high school graduates and women with some college education, whereas women with no high school diplomas have increasingly permissive attitudes toward divorce. We examine this educational crossover in divorce attitudes in the context of variables correlated with women's educational attainment, including family attitudes and religion, income and occupational prestige, and family structure. We conclude that the educational crossover in divorce attitudes is associated most strongly with work and family structure variables.  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