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   944篇
  免费   49篇
管理学   120篇
民族学   6篇
人才学   2篇
人口学   90篇
丛书文集   6篇
理论方法论   148篇
社会学   455篇
统计学   166篇
  2023年   8篇
  2021年   8篇
  2020年   18篇
  2019年   25篇
  2018年   23篇
  2017年   38篇
  2016年   36篇
  2015年   23篇
  2014年   27篇
  2013年   151篇
  2012年   25篇
  2011年   35篇
  2010年   24篇
  2009年   27篇
  2008年   26篇
  2007年   34篇
  2006年   32篇
  2005年   30篇
  2004年   24篇
  2003年   24篇
  2002年   25篇
  2001年   27篇
  2000年   17篇
  1999年   20篇
  1998年   12篇
  1997年   14篇
  1996年   8篇
  1995年   12篇
  1994年   10篇
  1993年   23篇
  1992年   13篇
  1991年   9篇
  1990年   10篇
  1989年   5篇
  1988年   9篇
  1987年   10篇
  1986年   6篇
  1985年   7篇
  1984年   5篇
  1983年   8篇
  1982年   8篇
  1981年   7篇
  1980年   7篇
  1979年   14篇
  1978年   9篇
  1977年   13篇
  1976年   5篇
  1975年   15篇
  1974年   8篇
  1973年   5篇
排序方式: 共有993条查询结果,搜索用时 15 毫秒
81.
The institutionalization of R&D by large, modern organizations is regarded as one of the most significant social and economic factors of the twentieth century. In recent years post-modern organizations have begun to replace bureaucratic control with market control. This approach is particularly attractive in the case of R&D employees who have been relatively successful in resisting direct managerial control. Government statistics are used to demonstrate that external R&D increased from 5% to 16% of internal R&D expenditure between 1989 and 1995. This trend is examined in the context of consolidation within the UK pharmaceutical industry, which has considerable implications for the sustainability of high-technology industry in the UK.  相似文献   
82.
We develop statistical inferential tools for estimating and comparing conditional tail expectation (CTE) functions, which are of considerable interest in actuarial science. In particular, we construct estimators for the CTE functions, develop the necessary asymptotic theory for the estimators, and then use the theory for constructing confidence intervals and bands for the functions. Both parametric and non-parametric approaches are explored. Simulation studies illustrate the performance of estimators in various situations. Results are obtained under minimal assumptions, and the general Vervaat process plays a crucial role in achieving these goals.  相似文献   
83.
This paper describes a model (the VAM model)which integrates three of the most significantdimensions of the work experience, work values,attitudes, and moods, into one overarching framework.The VAM model proposes that a rich and more completeunderstanding of the experience of work necessitates thesimultaneous consideration of work values, attitudes,and moods. After describing how work values, attitudes, and moods, each capture key aspects ofexperiencing work, we discuss three important dimensionsalong which they vary: time, dynamism, and focus. Thesedimensions underscore the need for the simultaneous consideration of values, attitudes, and moodsfor a fuller understanding of the work experience. Wethen describe how work values, attitudes, and moods havethe potential to influence each other. Finally, we discuss the implications of the VAM modelfor understanding important organizational outcomesincluding extra-role behavior, job performance, socialloafing, absenteeism, and turnover.  相似文献   
84.
Empirical research with regard to the Protestantethic is reviewed in relation to Weber s model of thepart a specifically religious ethos played in the riseof capitalism. Weber argued that Western legal and commercial changes were not in themselvesan adequate explanation. Essential also was the set ofvalues emphasized by ascetic Protestantism:self-discipline, hard work, the careful use of time, the reinvestment of one s gains, personal honesty,creative innovation, and faith in the rewards of a justGod. Empirical research has found positive correlationsbetween Protestant ethic values and internal locus of control (self-discipline), hard work,honesty, and belief in a just world. Findings withregard to the use of time and money are inconclusive.The relationship with creative innovation has not been examined. There is a need for empiricalstudy of the relationship between the Protestant ethicand personal religious orientation.  相似文献   
85.
This study examined the linkage between low-income mothers' conversations about emotions and their children's understanding of emotion. Forty-five low-income preschoolers and their mothers were videotaped while viewing a wordless picture book designed to elicit talk about emotions. Three maternal and child emotional language behaviors were coded from the videotapes: (a) unelaborated comments about emotions; (b) explanations about the causes and consequences of emotions; and (c) empathy-related statements. The children's questions about emotions were also coded. In a separate interview, the preschoolers were administered tasks that assessed emotional expression knowledge, emotional situation knowledge, and emotional role-taking. The results revealed that emotional situation knowledge was positively predicted by mothers' empathy-related statements. Mothers' explanations about the causes and consequences of emotions were uniquely related to emotional role-taking ability. There were very few correlations between the mothers' and children's talk about emotions. Results are discussed in terms of the functional significance of mothers' emotional language for young children's emotional competence.  相似文献   
86.
M L Jones 《Child welfare》1979,58(1):27-34
The development of an adoptive relationship for children who have been in the limbo of foster care is a continuous process. It is unrealistic to expect these families to live happily ever after. Agencies must begin developing regular services to meet the special needs of the families being created. To a large extent the issues that will have to be worked through relate to the stages of preparation outlined in this paper. Each stage in the child's growth may activate unresolved issues around the grief at the biological parents' rejection, confusion about identity or difficulty in working through problems. Future adoptive home recruitment must take this into account by providing training and other supports to families considering adopting the older child.  相似文献   
87.
It is argued that family business enterprises can be an adaptive response to the transformations that recently have characterized Eastern and Central Europe. Family-centered initiatives are important for sustainable socioeconomic development. In this article, a family-enterprise incubator scheme for the stimulation of family and socioeconomic development is discussed. This approach incorporates resources, services, and supports beyond those conventionally offered.  相似文献   
88.
SUMMARY In long-term field trials comparing different sequences of crops and husbandry practices, the identification and understanding of trends in productivity over time is an important issue of sustainable crop production. This paper presents a statistical technique for the estimation of time trends in yield variables of a seasonal annual crop under continuous cropping. The estimation procedure incorporates the correlation structure, which is assumed to follow first-order autocorrelation in the errors that arise over time on the same plot. Because large differences in annual rainfall have a major effect on crop performance, rainfall has been allowed for in the estimation of the time trends. Expressions for the number of years (time) required to detect statistically significant time trends have been obtained. Illustrations are based on a 7-year data set of grain and straw yields from a trial in northern Syria. Although agronomic interpretation is not intended in this paper, the barley yield data indicated that a significant time trend can apparently be detected even in a suboptimal data set of 7 years' duration.  相似文献   
89.
90.
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