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   19323篇
  免费   526篇
  国内免费   1篇
管理学   2799篇
民族学   70篇
人才学   1篇
人口学   1903篇
丛书文集   78篇
教育普及   2篇
理论方法论   1737篇
现状及发展   1篇
综合类   258篇
社会学   9456篇
统计学   3545篇
  2021年   112篇
  2020年   281篇
  2019年   377篇
  2018年   443篇
  2017年   609篇
  2016年   478篇
  2015年   349篇
  2014年   461篇
  2013年   3033篇
  2012年   631篇
  2011年   621篇
  2010年   450篇
  2009年   378篇
  2008年   450篇
  2007年   472篇
  2006年   460篇
  2005年   448篇
  2004年   414篇
  2003年   379篇
  2002年   417篇
  2001年   522篇
  2000年   532篇
  1999年   463篇
  1998年   345篇
  1997年   317篇
  1996年   328篇
  1995年   306篇
  1994年   286篇
  1993年   291篇
  1992年   347篇
  1991年   318篇
  1990年   286篇
  1989年   291篇
  1988年   293篇
  1987年   252篇
  1986年   245篇
  1985年   279篇
  1984年   272篇
  1983年   251篇
  1982年   219篇
  1981年   185篇
  1980年   169篇
  1979年   196篇
  1978年   179篇
  1977年   160篇
  1976年   136篇
  1975年   158篇
  1974年   120篇
  1973年   116篇
  1972年   95篇
排序方式: 共有10000条查询结果,搜索用时 375 毫秒
801.
R. J. Reynolds Tobacco USA (RJR) is currently implementing a microcomputer-based decision support system to computerize and optimize the selection of patterns for loading cases of finished product into truck trailers at RJR's Central Distribution Center. This system allows for the efficient loading of trucks with less supervision. Total annual savings from reduced personnel and shipping costs is approximately $850,000. In addition to these benefits, the system is a stepping stone for trailer loading automation and the integration of a comprehensive load planning system.  相似文献   
802.
803.
In studying the complex determinants of human fertility, social scientists have given little attention to population density, although reproduction has been shown to be density-dependent for a wide variety of other species. Using fixed effects models on the time series of 145 countries and controlling for key social and economic variables, we find a consistent and significant negative relationship between human fertility and population density. Moreover, we find that individual fertility preferences also decline with population density. These findings suggest that population density should be included as a variable in future studies of fertility determinants.
Wolfgang LutzEmail:
  相似文献   
804.
In the long history of the West's encounter with Hawaiian culture, which began in the late 1700s with Captain Cook, translators and translations have often been the tools of intentional falsehood, thus demonstrating the truth of the Italian proverb, Traduttore, traditore ("the translator is a traitor")--particularly with regard to same-sex texts. The standards of truth have often been subverted in translation by the demands of foreign religion, hegemony, business, and academe. This subversion continues to this day in the form of the "missionary mentality" in politics and law. The way out of this situation is a brutally honest cleaning-off of the besmirched Hawaiian texts.  相似文献   
805.
Much of the current knowledge pertaining to information technology (IT) and decision making is based on decades old technologies that revolved around a central computing function and application-specific systems. The purpose of this research is to examine the IT decision-making relationship within the emerging organizational computing (OC) environment permeated by spontaneous utilization of both application-and nonapplication-specific computing and communication technologies. Specifically, this study seeks to explore managers' perceptions of the emerging OC environment as a facilitator of their decision-making activities. To achieve a higher level of clarity than previous works, a two-dimensional research framework is developed with the IT dimension consisting of computing and communication, and the decision-making dimension differentiated between operational and managerial decisions. A survey instrument was constructed that measured the computing and communication dimensions of information technology use and their perceived effects upon operational and managerial decisions. The major findings of the study confirmed that managers recognize the value of general, nonapplication-specific information technologies in decision making, and that this recognition is highly associated with how intensively these information technologies are used. Additionally, it was found that the two dimensions of IT differ in their relationships to decision making, and that IT usage relates to managerial decisions differently than operational decisions. These study findings have significant implication for practice and research, especially in the context of information resource management in which the primary purpose of the IS function is the delivery of general information service to users rather than the development of specific IS applications.  相似文献   
806.
Social Indicators Research - Research and policy circles often emphasize the importance of social capital in achieving social transformation and economic development. There is also, however,...  相似文献   
807.
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   
808.
Journal of Risk and Uncertainty - Texas is the only state that does not mandate that employers carry workers’ compensation (WC) insurance coverage. In place of traditional WC, companies can...  相似文献   
809.
Places affected or threatened by extreme environmental disturbances confront a number of significant issues, including whether their populations will stay the same or change through migration. Research on Hurricanes Katrina and Rita shows some displaced residents returned to their disaster-affected communities once the built environment was restored, new migrants settled in affected places as part of the rebuilding effort, and the regional migration system grew more urbanized and spatially concentrated during post-disaster years. Research also shows that not all disaster-affected places recovered their populations. Our study examines whether differential recovery is systematically patterned along the rural–urban gradient. Using U.S. Census Bureau estimates and IRS county-to-county migration data, we investigate whether the 2005 hurricane season differentially exacerbated or altered previous migration trends across a rural–urban gradient that incorporates proximity to metropolitan areas and disaster-related housing loss. We find a rural–urban differential in Gulf Coast recovery migration: The disaster boosted migration among non-metropolitan counties, yet these increases were smaller and short-lived compared to the patterns found for metropolitan counties, most especially high loss metropolitan counties. Our findings encourage theories of environmental migration to incorporate spatial differentiation and scenarios of environmental changes to account for differential impacts on settlement patterns across the rural–urban continuum.  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