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   91879篇
  免费   2960篇
  国内免费   18篇
管理学   12461篇
民族学   563篇
人才学   25篇
人口学   7085篇
丛书文集   608篇
教育普及   1篇
理论方法论   9490篇
综合类   2697篇
社会学   43084篇
统计学   18843篇
  2023年   503篇
  2021年   578篇
  2020年   1519篇
  2019年   2206篇
  2018年   2129篇
  2017年   3202篇
  2016年   2397篇
  2015年   2060篇
  2014年   2651篇
  2013年   18901篇
  2012年   2495篇
  2011年   2303篇
  2010年   2089篇
  2009年   2260篇
  2008年   2170篇
  2007年   1996篇
  2006年   2212篇
  2005年   2374篇
  2004年   2190篇
  2003年   1902篇
  2002年   2009篇
  2001年   2050篇
  2000年   1810篇
  1999年   1721篇
  1998年   1514篇
  1997年   1351篇
  1996年   1318篇
  1995年   1332篇
  1994年   1296篇
  1993年   1294篇
  1992年   1291篇
  1991年   1239篇
  1990年   1209篇
  1989年   1053篇
  1988年   1141篇
  1987年   1015篇
  1986年   917篇
  1985年   1092篇
  1984年   1144篇
  1983年   1033篇
  1982年   944篇
  1981年   876篇
  1980年   812篇
  1979年   882篇
  1978年   779篇
  1977年   699篇
  1976年   658篇
  1975年   643篇
  1974年   533篇
  1973年   441篇
排序方式: 共有10000条查询结果,搜索用时 505 毫秒
521.
Philadelphia, then and still one of the worst governed of America’s badly governed cities, was having one of its periodic spasms of reform. A thorough study of causes was called for. Not but what the underlining cause was evident to most white Philadelphians: the corrupt semi-criminal vote of the Negro Seventh Ward…. Would it not be well, to elucidate the known causes by a scientific investigation?… With my bride of three months, I settled in one room over a cafeteria run by a College Settlement, in the worst part of the Seventh Ward. We lived there a year, in the midst of an atmosphere of dirt, drunkenness, poverty and crime. Murder sat on our doorstep, police were our government, and philanthropy dropped in with periodic advice. (DuBois, 1968/1975: 194–5 also in Logan, ed. 1944: 42) What had been borne into me during my book studies was my utter ignorance of the manual-working class, that is, of four-fifths of my countrymen…. How was I to get an opportunity of watching, day by day, in their homes and in their workshops, a sufficient number of normal manual-working families to enable me to visualize the class as a whole; to understand what was meant by chronic poverty and insecurity of livelihood. (Webb, 1926: 146–7)  相似文献   
522.
The Latack-Dozier (1986) model of career growth through job loss was examined using a sample of 515 involuntarily displaced professionals. Results supported the model and identified variables most predictive of career growth for men and women. The results also partially supported the hypothesis that men and women rely on different forms of social support after job loss. The Latack-Dozier model is discussed in light of the findings. In addition, implications for dismissed workers, for career development specialists, and for practitioners are discussed.  相似文献   
523.
Abstract Participation in rural development programs that organize members into local cooperative groups can alter the decision-making environment facing couples to reflect some of the negative consequences of childbearing. This study uses data from Nepal, collected through a combination of ethnographic and survey methods, to test the effects of participation in such a development program on fertility behavior. Results demonstrate that program participants are much more likely to use contraceptives to limit their fertility than are non-participants. The study provides empirical support for theories linking this type of institutional change to fertility and indicates a policy option that can allow some negative consequences of childbearing to affect couples' fertility decisions.  相似文献   
524.
This study attempted to identify the primary activities performed by R&D managers at different supervisory levels, and the cognitive and interpersonal ability requirements that underlie these activities. A task inventory containing 244 managerial tasks was completed by 117 R&D managers in nine organizations. The 48 tasks which managers rated as having spent the most time were factor analyzed, resulting in the identification of three primary activities: project management, personnel supervision, and strategic planning. Furthermore, these activities varied with supervisory level, with R&D managers performing a wider range of these activities with the progression from first-line to upper-level management.Thirty R&D managers later rated the degree to which 19 cognitive and interpersonal abilities were required for performing these primary activities. Strategic planning was rated as requiring significantly higher levels of oral expression, logical reasoning, originality, fluency of ideas, oral defense, and resistance to premature judgement than was required for the other two primary activities. Personnel supervision required a higher level of social sensitivity than was required for the other two activities. Project management required high levels of information ordering, oral fact- finding ability, problem sensitivity, and oral and written comprehension. Implications of the findings for understanding R&D managerial performance and personnel staffing functions are discussed.  相似文献   
525.
In this part of the series, the notion of average total inspection (ATI) is introduced to ChSP-4A(c1, c2)r plans, minimizing ATI at a given process average, while protection to the consumer is given in terms of average outgoing quality limit and limiting quality level. The procedure is similar to that of Dodge and Roming.  相似文献   
526.
527.
Comment   总被引:1,自引:0,他引:1  
  相似文献   
528.
Much debate over the years has centered around whether there was ever a “golden past” for the introductory sociology textbook, when high quality books influenced the development of scholarship and thinking. Some empirical evidence is added to this debate through an analysis of the citations to introductory sociology textbooks in all the articles and research notes appearing in theAmerican Journal of Sociology, theAmerican Sociological Review, andSocial Forces from 1960 to 1969 and from 1984 to 1993. The data show that, although seldom cited in recent journals, introductory sociology textbooks were often cited in the earlier period. The article concludes with some thoughts about why introductory sociology textbooks have had a declining influence on scholarship.  相似文献   
529.
530.
Concept modeling is presented as a way to describe and understand social situations. Concepts are developed from field data and supported by sets of exemplars drawn from the data which illustrate the various concepts. The computer is considered an essential tool for conducting this type of qualitative data analysis and displaying the resulting concept models. Two sample concept models are presented along with a discussion of how concept models can be related to teaching and learning, as well as to the nonlinear presentation of research results. Assessment of concept models is then considered. Three types of assessment are suggested: empirical, qualitative and quantitative.  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