全文获取类型
收费全文 | 20319篇 |
免费 | 404篇 |
国内免费 | 1篇 |
专业分类
管理学 | 2850篇 |
民族学 | 87篇 |
人才学 | 1篇 |
人口学 | 1996篇 |
丛书文集 | 78篇 |
教育普及 | 3篇 |
理论方法论 | 1865篇 |
现状及发展 | 1篇 |
综合类 | 264篇 |
社会学 | 9994篇 |
统计学 | 3585篇 |
出版年
2023年 | 99篇 |
2021年 | 124篇 |
2020年 | 320篇 |
2019年 | 416篇 |
2018年 | 504篇 |
2017年 | 701篇 |
2016年 | 546篇 |
2015年 | 407篇 |
2014年 | 498篇 |
2013年 | 3184篇 |
2012年 | 681篇 |
2011年 | 669篇 |
2010年 | 477篇 |
2009年 | 404篇 |
2008年 | 488篇 |
2007年 | 490篇 |
2006年 | 480篇 |
2005年 | 468篇 |
2004年 | 420篇 |
2003年 | 403篇 |
2002年 | 438篇 |
2001年 | 528篇 |
2000年 | 540篇 |
1999年 | 476篇 |
1998年 | 348篇 |
1997年 | 311篇 |
1996年 | 325篇 |
1995年 | 309篇 |
1994年 | 284篇 |
1993年 | 295篇 |
1992年 | 342篇 |
1991年 | 320篇 |
1990年 | 287篇 |
1989年 | 293篇 |
1988年 | 289篇 |
1987年 | 252篇 |
1986年 | 246篇 |
1985年 | 278篇 |
1984年 | 267篇 |
1983年 | 254篇 |
1982年 | 215篇 |
1981年 | 180篇 |
1980年 | 166篇 |
1979年 | 195篇 |
1978年 | 177篇 |
1977年 | 159篇 |
1976年 | 134篇 |
1975年 | 157篇 |
1974年 | 118篇 |
1973年 | 115篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
This paper proposes an experimental test to evaluate the performance of the serial cost sharing rule, originally proposed
by Shenker [Sigmetrics, 241–242 (1990)] and then analyzed by Moulin and Shenker [Econometrica 60, 1009–1037 (1992)]. We report
measures of the performance and efficiency of the serial mechanism by comparing the choices and payoffs attained by the subjects
to the expected equilibrium allocations. Experimental evidence shows that learning is needed for the subjects to converge
to the equilibrium strategy. However, in terms of efficiency, the serial mechanism leads to almost efficient allocations. 相似文献
82.
To reduce nonresponse bias in sample surveys, a method of nonresponse weighting adjustment is often used which consists of multiplying the sampling weight of the respondent by the inverse of the estimated response probability. The authors examine the asymptotic properties of this estimator. They prove that it is generally more efficient than an estimator which uses the true response probability, provided that the parameters which govern this probability are estimated by maximum likelihood. The authors discuss variance estimation methods that account for the effect of using the estimated response probability; they compare their performances in a small simulation study. They also discuss extensions to the regression estimator. 相似文献
83.
84.
85.
Few researchers have examined organizational variation in the adoption of workplace drug testing, but innovation theory suggests that adoption is more likely when it is compatible with an organization's values, previously introduced ideas, and needs. Using data from the 1997 National Employee Survey, this research models the effects of organizational compatibility, industry, and establishment size on the adoption of drug testing. The data reveal that compatibility, as measured by an organization's rules orientation, presence of an employee assistance program, and mechanization, is associated with the adoption of drug testing. As predicted, the adoption of drug testing varies across industries and by establishment size. 相似文献
86.
87.
88.
FINNEY DJ 《Journal of the American Statistical Association》1948,43(244):566-571
89.
The Alchian and Allen theorem predicts that it will be harder to find "good" apples in the State of Washington, a prime apple-growing region, than in, say, New York City, where the addition of shipping charges makes "bad" apples comparatively more expensive. We recast the theorem as a testable proposition by explicitly taking the supply side into account and identifying plausible scenarios in which a fixed cost either has no effect on the relative prices of high and low quality grades of the same good in distant markets or, indeed, causes more of the bad apples to be shipped out. 相似文献
90.
Paul J. E. Miller John P. Caughlin Ted L. Huston 《Journal of marriage and the family》2003,65(4):978-995
This study examined the processes that underlie the association between trait expressiveness and marital satisfaction. A total of 168 newlywed couples participated in a four‐wave, 13‐year longitudinal study of marriage. Cross‐sectional and longitudinal path analyses suggested that expressiveness promotes satisfaction by leading spouses to engage in affectionate behavior and by leading them to idealize their partner. Expressive people formed idealized images of their partner because they brought out the best in their partner's behavior and because they interpreted their partner's behavior in a favorable light. The study extends previous research by showing that the benefits of trait expressiveness extend into the second decade of marriage and by providing a plausible explanation of the connections between trait expressiveness and marital satisfaction. 相似文献