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   4649篇
  免费   137篇
管理学   702篇
民族学   26篇
人才学   1篇
人口学   463篇
丛书文集   39篇
教育普及   1篇
理论方法论   550篇
综合类   54篇
社会学   2377篇
统计学   573篇
  2021年   30篇
  2020年   61篇
  2019年   81篇
  2018年   87篇
  2017年   134篇
  2016年   103篇
  2015年   82篇
  2014年   92篇
  2013年   790篇
  2012年   149篇
  2011年   171篇
  2010年   113篇
  2009年   137篇
  2008年   149篇
  2007年   146篇
  2006年   162篇
  2005年   148篇
  2004年   134篇
  2003年   127篇
  2002年   132篇
  2001年   90篇
  2000年   95篇
  1999年   87篇
  1998年   70篇
  1997年   73篇
  1996年   91篇
  1995年   70篇
  1994年   66篇
  1993年   60篇
  1992年   62篇
  1991年   61篇
  1990年   54篇
  1989年   64篇
  1988年   46篇
  1987年   43篇
  1986年   59篇
  1985年   59篇
  1984年   58篇
  1983年   45篇
  1982年   36篇
  1981年   43篇
  1980年   38篇
  1979年   47篇
  1978年   44篇
  1977年   34篇
  1976年   40篇
  1975年   41篇
  1974年   28篇
  1972年   18篇
  1971年   27篇
排序方式: 共有4786条查询结果,搜索用时 359 毫秒
211.
212.
An integer linear programming model is presented for the scheduling of n products on m identical machines. The particular problem studied is one that occurs frequently in the fiberglass and textile industries. The model incorporates setup costs, lost production costs, and overtime costs. Due to the structure of the model, integer solutions can be obtained by explicitly restricting only a small number of the integer variables. This allows those responsible for scheduling to solve realistically sized problems in an efficient manner. Computational results are provided for a set of generated test problems.  相似文献   
213.
This article presents the results of an AIDS-sponsored investigation of teaching effectiveness in the decision sciences. Two national samples were employed in the study: a sample of 247 business school deans and a sample of 3,292 students from 32 different business schools. Included among the findings are that 87 percent of the deans responding indicate they require some sort of faculty teaching effectiveness evaluation, and that great care must be exercised when interpreting student ratings of an individual instructor's teaching effectiveness.  相似文献   
214.
This article analyses two cases from health and social care, adopting a psycho-societal approach. The analysis highlights how professionalism evolves and develops through an introspection of the relational and scenic processes between professionals, as well as between the professional and the client or patient. As a phenomenon at the core of professional practice, it will be argued that introspection needs to recognize and encompass the intra- and inter-psychic responses and understandings of professionals and their clients and patients. The first case places supervision as a learning space, where framing and complex exchanges of loss and confirmation, and of denial and displacement take place between a group of social workers and their supervisor. In the second case, it becomes apparent how the research interview opens up an opportunity for processing the emotions and socially critical experiences involved in hospital work.  相似文献   
215.
216.
Creating value through outsourcing has emerged as a popular competitive strategy for firms in various industries. In order to survive in the domestic and international marketplaces, firms, especially in developed countries, are seeking opportunities offshore, which is one focus of globalization. Offshore outsourcing has emerged as a popular competitive strategy and emerging markets have become increasingly attractive locations. As firms in developed countries (e.g., the US) continue to face enormous challenges to sustain competitive advantage, outsourcing to emerging markets is becoming an increasingly important source of business renewal and corporate transformation.In spite of the growing strategic significance of sourcing, we have limited knowledge of offshoring and outsourcing to emerging markets. The objectives of this review are fourfold: (1) to provide a better understanding of the concepts of offshoring and outsourcing business models, (2) to discuss relevant theoretical perspectives related to outsourcing, (3) to present a taxonomy of outsourcing strategies drawing on the extant literature, and (4) to discuss public policy implications. Conclusions and direction for future research are provided.  相似文献   
217.
218.
219.
220.
This department includes the two sections New Developments in Statistical Computing and Statistical Computing Software Reviews; suitable contents for each of these sections are described under the respective section heading. Articles submitted for the department, outside the two sections, should not be highly technical and should be relevant to the teaching or practice of statistical computing.

An unbiased estimator of e is used to motivate a simple simulation exercise that requires only observations from the distribution uniform on (0, 1). Antithetic variables are introduced and applied to the simulation problem to give a second unbiased estimator of e with reduced variance.  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