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   28204篇
  免费   677篇
  国内免费   3篇
管理学   3808篇
民族学   120篇
人才学   3篇
人口学   2494篇
丛书文集   134篇
教育普及   3篇
理论方法论   2485篇
综合类   289篇
社会学   14033篇
统计学   5515篇
  2023年   137篇
  2021年   137篇
  2020年   374篇
  2019年   508篇
  2018年   649篇
  2017年   869篇
  2016年   625篇
  2015年   488篇
  2014年   648篇
  2013年   5253篇
  2012年   827篇
  2011年   764篇
  2010年   611篇
  2009年   536篇
  2008年   619篇
  2007年   616篇
  2006年   623篇
  2005年   600篇
  2004年   502篇
  2003年   472篇
  2002年   516篇
  2001年   677篇
  2000年   656篇
  1999年   618篇
  1998年   467篇
  1997年   407篇
  1996年   465篇
  1995年   465篇
  1994年   480篇
  1993年   455篇
  1992年   490篇
  1991年   504篇
  1990年   514篇
  1989年   446篇
  1988年   486篇
  1987年   416篇
  1986年   392篇
  1985年   429篇
  1984年   451篇
  1983年   390篇
  1982年   319篇
  1981年   263篇
  1980年   267篇
  1979年   318篇
  1978年   270篇
  1977年   225篇
  1976年   200篇
  1975年   184篇
  1974年   181篇
  1973年   160篇
排序方式: 共有10000条查询结果,搜索用时 803 毫秒
801.
This article compares social assistance systems in Macao and Hong Kong. It finds that Macao delivers a higher level of social assistance benefits, whereas Hong Kong has a larger group of social assistance beneficiaries. The Hong Kong Government spends a larger amount on social assistance provision and imposes tougher controls on the recipients, compared to Macao. The results of the comparison indicate that Macao and Hong Kong differ markedly in the type of productivist welfare regime they belong and challenge the assertion that the two welfare systems form a distinct welfare model.  相似文献   
802.
The United States is entering a new era, a period marked by some important demographic changes in the composition of the population, most especially significant increases in the Latino and Latino immigrant segments of society. These population shifts require corresponding interpersonal, organizational, and structural changes. The present issue bridges research and theory across disciplines and includes studies incorporating a variety of methodologies to examine these important areas. These articles begin to fill some of the voids where a systematic and robust corpus of knowledge is lacking. The contributions address topics ranging from issues of identity and interpersonal relations to pressing matters of educational significance to general approaches to navigating the cultural transitions that mark fluid transnational adaptations. Finally, each contribution delineates the policy implications resulting from the processes and literatures that are examined.  相似文献   
803.
Work values might be proximal predictors of individuals' late‐career intentions because they serve as guiding principles for the selection, evaluation, and justification of vocational behavior. The purpose of this study was to examine the relationship between work values and post‐retirement work intentions. The authors investigated individual work values within the structure of 4 higher order values elaborated on by Schwartz et al. ( 2012 ). Relationships between work values and 4 types of post‐retirement work intentions were examined. Data from 1,071 employees of a German logistics company were used to test the hypotheses. The results of a structural equation model indicated that work values were differentially related to the 4 types of post‐retirement work intentions. The identified work value–work type combinations add to the literature on post‐retirement work. Practice implications for promoting positive individual and organizational outcomes are drawn from the results.  相似文献   
804.
In a study of 142 couples, we gathered survey data to show how sexual communication influences sexual and relationship satisfaction as well as sexual and orgasm frequency. In two dyadic data path analyses, we observed the significant paths of influence that sexual communication has on sexual and relationship satisfaction, as well as sexual and orgasm frequency. Our findings revealed greater amounts of sexual communication were associated with increased orgasm frequency in women and greater relationship and sexual satisfaction in both sexes. We also observed important differences in the associations of sexual communication and general communication on satisfaction levels. With these analyses, we expand the current literature to broaden our understanding of the role that sexual communication plays in committed relationships.  相似文献   
805.
Aalen's nonparametric additive model in which the regression coefficients are assumed to be unspecified functions of time is a flexible alternative to Cox's proportional hazards model when the proportionality assumption is in doubt. In this paper, we incorporate a general linear hypothesis into the estimation of the time‐varying regression coefficients. We combine unrestricted least squares estimators and estimators that are restricted by the linear hypothesis and produce James‐Stein‐type shrinkage estimators of the regression coefficients. We develop the asymptotic joint distribution of such restricted and unrestricted estimators and use this to study the relative performance of the proposed estimators via their integrated asymptotic distributional risks. We conduct Monte Carlo simulations to examine the relative performance of the estimators in terms of their integrated mean square errors. We also compare the performance of the proposed estimators with a recently devised LASSO estimator as well as with ridge‐type estimators both via simulations and data on the survival of primary billiary cirhosis patients.  相似文献   
806.
807.
Attempts to control the importation of infectious diseases through the medical screening and evaluation of immigrants and refugees represent the modern application of some of the earliest recorded public health interventions.
States with long-standing immigration programmes continue to require the medical examination and screening of migrants for certain diseases. In some instances, the public health effectiveness of these immigration medical assessments is of questionable value when considered from a population health basis.
This article reviews current practices and describes recent studies where more modern and epidemiologically based immigration medical interventions have been undertaken. A more effective immigration medical assessment process is proposed through the use of results of this more empirical approach to immigration medical screening.  相似文献   
808.
809.
Two types of shrunken estimators of regression coefficients are studied in the context of stochastic predictor variables. Emphasis is placed on the choice of the shrinkage parameters, using a ‘deleted-observation’ concept which is motivated by predictive ability.  相似文献   
810.
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