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   10805篇
  免费   309篇
  国内免费   2篇
管理学   1512篇
民族学   63篇
人才学   3篇
人口学   969篇
丛书文集   71篇
理论方法论   1095篇
综合类   228篇
社会学   5587篇
统计学   1588篇
  2020年   155篇
  2019年   257篇
  2018年   265篇
  2017年   380篇
  2016年   269篇
  2015年   201篇
  2014年   255篇
  2013年   1764篇
  2012年   358篇
  2011年   342篇
  2010年   276篇
  2009年   266篇
  2008年   254篇
  2007年   296篇
  2006年   263篇
  2005年   268篇
  2004年   251篇
  2003年   182篇
  2002年   217篇
  2001年   275篇
  2000年   233篇
  1999年   211篇
  1998年   170篇
  1997年   158篇
  1996年   154篇
  1995年   150篇
  1994年   155篇
  1993年   151篇
  1992年   154篇
  1991年   149篇
  1990年   152篇
  1989年   148篇
  1988年   135篇
  1987年   150篇
  1986年   117篇
  1985年   150篇
  1984年   156篇
  1983年   142篇
  1982年   124篇
  1981年   96篇
  1980年   111篇
  1979年   113篇
  1978年   102篇
  1977年   87篇
  1976年   91篇
  1975年   100篇
  1974年   94篇
  1973年   69篇
  1972年   61篇
  1971年   53篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
891.
The well-known Meixner class (Meixner, 1934) of probabilities on R has been extended recently to R d (Pommeret, 1996). This generalized Meixner class corresponds to the simple quadratic natural exponential families characterized by Casalis (1996). Following Lancaster (1975), the present paper offers a characterization of the joint probability of a randomvector ( X, Y ) such that the two variables X and Y on R d belong to the multidimensional Meixner class and fulfil a bi-orthogonality condition involving orthogonal polynomials. The joint probabilities, called Lancaster probabilities, are characterized by two sequences of orthogonal polynomials with respect to the margins and a sequence of expectations of products. Some multivariate probabilities are studied, namely the Poisson-Gaussian and the gamma-Gaussian.  相似文献   
892.
The Collaborative Demonstration Program for Homeless Individuals is providing an opportunity for several community agencies in the United States to explore innovative intervention and treatment strategies to address the needs of homeless people with co-occurring (mental illness and substance abuse) disorders. This cooperative agreement, funded jointly by the Center for Mental Health Services (CMHS) and the Center for Substance Abuse Treatment (CSAT), is a $3 million project supporting programs in various community agencies to develop, document, and evaluate programs for persons who are homeless with co-occurring disorders to be used as models in other communities. The program models include: Assertive Community Treatment, Psychosocial Rehabilitation, Therapeutic Community, and an integrated treatment model. The first phase of the two-phase project funded 16 programs in the U.S. to develop manuals within their primary treatment modalities for homeless people with co-occurring disorders. For Phase II of the project, six of the 16 model programs were competitively selected to demonstrate program impact through formal program evaluation efforts. The data derived from the various projects will be compiled into a compendium of information for state agencies and community service providers throughout the U.S.  相似文献   
893.
This review of the governance practices of twenty-five public-private partnerships involved in addressing a broad range of community health needs shows that governance in public-private community partnerships departs significantly from traditional notions of institutional governance. Governance structures and degrees of progress toward governance goals vary widely and appear to be systematically related to the organization, composition, location, and activity of each partnership.  相似文献   
894.
The article provides evidence that there is a relationship between government debt and interest rates via the demand for money. This relationship is examined through the wealth effect of government debt on money demand, and the robustness of the results is tested by the use of extreme bound analysis in addition to standard econometric techniques. We find that OLS regression shows government debt fnfecting the demand for money positively, implying that Federal government debt is net wealth. In addition, the extreme bound analysis shows that the estimates of the government debt coefficient are robust under alternative specifications of the Goldfeld model.  相似文献   
895.
Parenting by men who abuse women: issues and dilemmas   总被引:2,自引:0,他引:2  
Summary Enabling children of abused women to maintain a positive relationshipwith the perpetrator is extremely complex in the light of thepotential danger for women and children and the conflictingneeds, interests and rights of different family members. Nevertheless,we can no longer ignore the role of abusive men as fathers.Holding such men accountable for their children's well-beingmay, under certain conditions, contribute to the healthier emotionaldevelopment of their children. This article critically discussesthis controversial issue by examining available literature on(a) children's perceptions of their violent fathers, (b) abusivemen as parents, qualifications for abusive men's access to theirchildren, and (d) intervention with children of abusive menand their fathers.  相似文献   
896.
SUMMARY. Three one day workshops for 40 senior clinical staff were held to introduce a new Operational Policy on Child Sexual Abuse (CSA) and to provide them with a teaching package to enable them to run ‘cascade’ teaching sessions for other staff and colleagues. Part I of this paper describes an evaluation of the workshop; Part II describes an evaluation of the cascade The workshop evaluation showed that knowledge about CSA and policy issues was already good, but although that knowledge did improve after the workshop, attitudes about sexual behaviour were not changed by the workshop. Evaluation of the cascade also showed an increase in knowledge after the dissemination exercise  相似文献   
897.
898.
899.
The author criticises the “Delphi” method of forecasting technological developments by obtaining a consensus of opinion among experts. He argues that the problem is not to forecast what might happen, but rather to decide what should happen and he suggests improvements in the Delphi technique which would change it from an ad hoc method old crytal ball gazing” into a system for continuous consultation among “responsible organizations”.  相似文献   
900.
Algebraic calculations that depend upon a full partition can be automated through the use of an operator P for the derivation of such a partition. Calculations that require the repeated use of P are automated by simply iterating the operator. The resulting output is general and contains sufficient structure to identify the result of a calculation for a variety of settings.  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