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   19685篇
  免费   169篇
管理学   2830篇
民族学   140篇
人才学   1篇
人口学   3189篇
丛书文集   45篇
理论方法论   1304篇
现状及发展   1篇
综合类   582篇
社会学   8543篇
统计学   3219篇
  2023年   50篇
  2021年   71篇
  2020年   120篇
  2019年   168篇
  2018年   1856篇
  2017年   1947篇
  2016年   1299篇
  2015年   221篇
  2014年   246篇
  2013年   1675篇
  2012年   660篇
  2011年   1394篇
  2010年   1242篇
  2009年   977篇
  2008年   1056篇
  2007年   1208篇
  2006年   177篇
  2005年   444篇
  2004年   455篇
  2003年   454篇
  2002年   357篇
  2001年   252篇
  2000年   229篇
  1999年   213篇
  1998年   162篇
  1997年   125篇
  1996年   176篇
  1995年   129篇
  1994年   119篇
  1993年   115篇
  1992年   137篇
  1991年   134篇
  1990年   127篇
  1989年   112篇
  1988年   132篇
  1987年   122篇
  1986年   114篇
  1985年   139篇
  1984年   110篇
  1983年   117篇
  1982年   91篇
  1981年   88篇
  1980年   81篇
  1979年   86篇
  1978年   85篇
  1977年   57篇
  1976年   55篇
  1975年   67篇
  1974年   54篇
  1972年   44篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
This paper outlines the conceptual bases, strategies, and psychological attributes of leadership by self-leadership. In addition, relations to other theories of leadership are drawn. Dimensions and correlates of self-leadership competence are described and discussed. Various approaches for developing self-leadership competence are discussed as well.  相似文献   
12.
13.
14.
Sets of relatively short time series arise in many situations. One aspect of their analysis may be the detection of outlying series. We examine the performance of standard normal outlier tests applied to the means, or to simple functions of the means, of AR(1) series, not necessarily of equal lengths. Although unequal lengths of series implies that the means have unequal variances, that are only known approximately, it is shown that nominal significance levels hold good under most circumstances. Thus a standard outlier test can usefully be applied, avoiding the complication of estimating the time series' parameters. The test's power is affected by unequal lengths, being higher when the slippage occurs in one of the longer series  相似文献   
15.
K. Goda  H. P. Hong 《Risk analysis》2008,28(2):523-537
Seismic risk can be reduced by implementing newly developed seismic provisions in design codes. Furthermore, financial protection or enhanced utility and happiness for stakeholders could be gained through the purchase of earthquake insurance. If this is not so, there would be no market for such insurance. However, perceived benefit associated with insurance is not universally shared by stakeholders partly due to their diverse risk attitudes. This study investigates the implied seismic design preference with insurance options for decisionmakers of bounded rationality whose preferences could be adequately represented by the cumulative prospect theory (CPT). The investigation is focused on assessing the sensitivity of the implied seismic design preference with insurance options to model parameters of the CPT and to fair and unfair insurance arrangements. Numerical results suggest that human cognitive limitation and risk perception can affect the implied seismic design preference by the CPT significantly. The mandatory purchase of fair insurance will lead the implied seismic design preference to the optimum design level that is dictated by the minimum expected lifecycle cost rule. Unfair insurance decreases the expected gain as well as its associated variability, which is preferred by risk-averse decisionmakers. The obtained results of the implied preference for the combination of the seismic design level and insurance option suggest that property owners, financial institutions, and municipalities can take advantage of affordable insurance to establish successful seismic risk management strategies.  相似文献   
16.
Empirical applications of poverty measurement often have to deal with a stochastic weighting variable such as household size. Within the framework of a bivariate distribution function defined over income and weight, I derive the limiting distributions of the decomposable poverty measures and of the ordinates of stochastic dominance curves. The poverty line is allowed to depend on the income distribution. It is shown how the results can be used to test hypotheses concerning changes in poverty. The inference procedures are briefly illustrated using Belgian data. An erratum to this article can be found at  相似文献   
17.
Singh et al. ([13]) pointed out that the Randomized response (RR) technique proposed by Moors ([9]) is not desirable because it fails to protect the confidentiality of the respondents and they provided two alternative strategies free from the above drawback but limited to SRSWOR sampling only. In this paper, generalization of one of the strategies is provided for complex survey designs, wider class of estimators and for quantitative characteristics. Relative efficiency of the modified strategy is tested through empirical investigations. An erratum to this article is available at .  相似文献   
18.
19.
20.
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