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   11323篇
  免费   292篇
管理学   1662篇
民族学   64篇
人才学   2篇
人口学   1030篇
丛书文集   63篇
理论方法论   1023篇
综合类   303篇
社会学   5148篇
统计学   2320篇
  2023年   58篇
  2021年   74篇
  2020年   144篇
  2019年   203篇
  2018年   239篇
  2017年   337篇
  2016年   279篇
  2015年   227篇
  2014年   248篇
  2013年   2021篇
  2012年   383篇
  2011年   319篇
  2010年   260篇
  2009年   229篇
  2008年   299篇
  2007年   283篇
  2006年   213篇
  2005年   283篇
  2004年   261篇
  2003年   298篇
  2002年   338篇
  2001年   297篇
  2000年   267篇
  1999年   244篇
  1998年   198篇
  1997年   169篇
  1996年   172篇
  1995年   165篇
  1994年   149篇
  1993年   154篇
  1992年   166篇
  1991年   166篇
  1990年   154篇
  1989年   139篇
  1988年   166篇
  1987年   167篇
  1986年   129篇
  1985年   160篇
  1984年   141篇
  1983年   161篇
  1982年   103篇
  1981年   107篇
  1980年   97篇
  1979年   108篇
  1978年   115篇
  1977年   83篇
  1976年   79篇
  1975年   87篇
  1974年   66篇
  1973年   57篇
排序方式: 共有10000条查询结果,搜索用时 421 毫秒
421.
Practitioners and researchers have long been interested in achieving the highest response rate within resource constraints on their mailed surveys. Achieving this high response rate typically has required the selection of the right mix of response-facilitating techniques. The selection decisions were generally made under the assumption that the response-facilitating techniques act independently of one another. The authors have examined the validity of this independence assumption by identifying the major response facilitators in use and then analyzing the results of 531 independent mail survey studies. The authors conclude that major facilitators do not function independently. In fact, it was found that significant joint action interactive effects on response rates do exist. Practitioners and researchers who are faced with the survey design decisions of choosing response facilitators can receive assistance by reviewing the results of this diverse collection of reported experiences.  相似文献   
422.
This article describes an algorithm used to formulate an inbound consolidation strategy when multi-items are replenished in groups and when total logistics cost is to be minimized. The importance of this algorithm is threefold (1) no optimal procedure exists for grouping multi-items when minimizing total logistics cost, (2) a complete enumeration of all possible groups (from which the optimal grouping set can be identified) is impractical due to the combinatorial nature of the grouping problem, and (3) no other heuristics have been developed that adequately reflect shipping cost in the analysis like this one does. We report the experience of using this algorithm to group and reorder 75 selected ensembles containing a total of 517 inventory items of a retail merchandising firm.  相似文献   
423.
Caleb Perry Patterson was a leader in the discipline of political science during a long career. He is remembered as the founder of the national political science honor society, Pi Sigma Alpha, and as a charter founder of the Southwestern Political Science Association (now the Southwestern Social Science Association). Both were founded a century ago, in 1920. While his role in founding those organizations is one of his legacies, his career was much more than that. He was a notable educator, an activist in the politics of his time, and a prolific scholar. He used an oratorical presentation style to inspire generations of students, and through promotion of constitutional values, he encouraged independence of thought. One prominent Texas political observer summed up his impact as encouraging students of all political stripes to “love the thing that is America” and to provide critical thinking during the McCarthy Era. With Patterson as his reference, he concluded that “the only thing that can save us is the professors, really.”  相似文献   
424.
425.
426.
Disability policy in European countries is displaying a shift towards social investment: increasing human capital and access to the labour market. The reasoning that underlies this transition is that disabled persons would benefit from mainstream employment, but are impeded in traditional policy by deficiencies in labour supply and demand. However, the shift towards more activating policies in many countries is accompanied by a decline in social protection. It is unclear whether social investment may effectively promote the employment chances of disabled persons within this context. The present research examines this question through a quantitative, cross-sectional, multilevel analysis on microdata from 22 EU countries. Our findings suggest greater activation to predict lower employment chances, while reducing passive support shows mixed effects. Conversely, measures for facilitation in daily life predict greater employment chances, as do measures for sheltered work. These findings raise questions over the value of social investment for disabled persons—and underline the need to overcome broader barriers in the labour market and in society.  相似文献   
427.
428.
Qualitative Sociology - This paper argues that lay people’s legal consciousness, defined as how they experience and interpret the law and legal meanings, can be studied by observing natural...  相似文献   
429.
In recent years, the decision to outsource information systems (IS) functions has become a viable strategic alternative in managing the increasingly complex IS functions. In this study, the IS outsourcing phenomenon is conceptualized as a strategic decision in the organization. Drawing on resource-based theories, resource dependence theories, and other theories of strategic management, a discrepancy model of this decision is developed. Relationships between a number of strategy-theoretic factors and the IS outsourcing decision are hypothesized. These factors include IS resource performance discrepancies manifested in the form of gaps in information quality, IS support quality, IS cost effectiveness and financial performance, as well as the strategic orientation of the firm. Results of the study indicate that, while cost consideration and the firm's financial performance are not associated with the IS outsourcing decision, difficulties in providing good information outputs and IS support services are associated with the decision. Overall, the findings suggest that the current trend toward outsourcing represents a continuing evolution of the IS function as it attempts to fulfill its traditional mission of providing high quality information resource to the firm. When the performance of the delivered resource begins to slip in the current environment of rising expectation and technological complexity, outsourcing may become a strategic response of necessity. The paper concludes with a discussion of the implications of the results for practicing managers and suggestions for future research.  相似文献   
430.
Product bundling has become increasingly prevalent not only in consumer goods but also in the industrial sector. We study a purchasing problem in which a buyer must obtain necessary numbers of various stock items from a variety of vendors who charge different prices, have limited capacities and different levels of quality, and offer bundled products at discounted prices. We examine relationships among different bundling scenarios and show that the most general scenario is one in which free items are given to the buyer when sufficient quantities are purchased. We develop a mixed integer linear program that finds the purchasing strategy for the buyer that minimizes the total purchase cost. We present computational results which indicate that the problem is very tractable to solve optimally on a personal computer with standard optimization software. Finally, three extensions of the model are discussed.  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