全文获取类型
收费全文 | 4101篇 |
免费 | 558篇 |
专业分类
管理学 | 791篇 |
民族学 | 10篇 |
人口学 | 169篇 |
丛书文集 | 3篇 |
理论方法论 | 701篇 |
综合类 | 21篇 |
社会学 | 2346篇 |
统计学 | 618篇 |
出版年
2023年 | 13篇 |
2022年 | 12篇 |
2021年 | 76篇 |
2020年 | 169篇 |
2019年 | 353篇 |
2018年 | 181篇 |
2017年 | 260篇 |
2016年 | 299篇 |
2015年 | 285篇 |
2014年 | 260篇 |
2013年 | 643篇 |
2012年 | 241篇 |
2011年 | 224篇 |
2010年 | 195篇 |
2009年 | 152篇 |
2008年 | 187篇 |
2007年 | 128篇 |
2006年 | 143篇 |
2005年 | 106篇 |
2004年 | 108篇 |
2003年 | 94篇 |
2002年 | 63篇 |
2001年 | 85篇 |
2000年 | 69篇 |
1999年 | 34篇 |
1998年 | 21篇 |
1997年 | 22篇 |
1996年 | 27篇 |
1995年 | 16篇 |
1994年 | 25篇 |
1993年 | 22篇 |
1992年 | 22篇 |
1991年 | 21篇 |
1990年 | 8篇 |
1989年 | 16篇 |
1988年 | 9篇 |
1987年 | 8篇 |
1986年 | 7篇 |
1985年 | 8篇 |
1984年 | 8篇 |
1983年 | 5篇 |
1981年 | 5篇 |
1980年 | 4篇 |
1979年 | 3篇 |
1978年 | 4篇 |
1977年 | 2篇 |
1975年 | 3篇 |
1974年 | 2篇 |
1973年 | 3篇 |
1966年 | 2篇 |
排序方式: 共有4659条查询结果,搜索用时 2 毫秒
31.
32.
The contemporary retreat from marriage in the United States has had a differential impact across socioeconomic and racial groups. Here, 1990 marriage rates and propensities for Virginia, North Carolina, and Wisconsin are analyzed regarding (a) the likelihood that persons in different groups ever marry and (b) patterns of partner choice with respect to race and educational level. Marriage remains strong in most race‐education groups but is substantially lower among Blacks and among those with less than 12 years of education. Patterns of partner choice have shifted to show greater symmetry between the educational levels of brides and grooms. Changes have been modest with regard to the level and pattern of interracial (Black‐White) marriage. Marriage is increasingly a union of equals, but a union chosen more by Whites than by Blacks and more by the well educated than by the poorly educated. 相似文献
33.
Noah Lewin‐Epstein Haya Stier Michael Braun 《Journal of marriage and the family》2006,68(5):1147-1164
We compare the patterns of household division of labor in Germany and Israel—two countries that share key elements of the corporatist welfare regime but differ in their gender regimes—and evaluate several hypotheses using data from the 2002 International Social Survey Program. Although time constraints and relative resources affect the division of household labor and women’s housework in both societies, we find that in Germany the gender order of household labor is more rigid, whereas in Israel the spouses’ linked labor market status exerts distinctive effects. We also find significant relationships between gender ideology and the division of household labor. We discuss the theoretical advantages of approaching the comparative study of gender inequality from the vantage point of family and gender regimes. 相似文献
34.
In the design of experiments for estimating the slope of a response surface, slope-rotatability is a desirable property. In this paper, a measure is introduced that enables us to assess the degree of slope-rotatability for a given response surface design. The measure takes the value zero if and only if the design is slope-rotatable, and becomes larger as the design deviates from a slope-rotatable design. Examples of applying this measure to some response surface designs are also given. 相似文献
35.
Standard algorithms for the construction of iterated bootstrap confidence intervals are computationally very demanding, requiring nested levels of bootstrap resampling. We propose an alternative approach to constructing double bootstrap confidence intervals that involves replacing the inner level of resampling by an analytical approximation. This approximation is based on saddlepoint methods and a tail probability approximation of DiCiccio and Martin (1991). Our technique significantly reduces the computational expense of iterated bootstrap calculations. A formal algorithm for the construction of our approximate iterated bootstrap confidence intervals is presented, and some crucial practical issues arising in its implementation are discussed. Our procedure is illustrated in the case of constructing confidence intervals for ratios of means using both real and simulated data. We repeat an experiment of Schenker (1985) involving the construction of bootstrap confidence intervals for a variance and demonstrate that our technique makes feasible the construction of accurate bootstrap confidence intervals in that context. Finally, we investigate the use of our technique in a more complex setting, that of constructing confidence intervals for a correlation coefficient. 相似文献
36.
Samuel Adomako Joseph Amankwah‐Amoah Yaw A. Debrah Zaheer Khan Irene Chu Catherine Robinson 《英国管理杂志》2021,32(1):40-58
This paper examines the mediating mechanism of the relationship between institutional voids (IVs) and inter‐firm cooperation and the moderating role of economic adversity in the context of small and medium‐sized enterprises (SMEs) based in emerging markets. The hypotheses are tested using time‐lagged survey data from 214 SMEs in Ghana. The findings provide support for the hypotheses by showing that: (1) IVs positively influence the use of government research and development (R&D) support; (2) the use of government R&D support mediates the relationship between IVs and inter‐firm cooperation; and (3) economic adversity positively moderates the relationship between IVs and the use of government R&D support. The findings contribute to understanding the role of IVs in inter‐firm cooperation. The wider implications for theory and practice are examined. 相似文献
37.
38.
In this article the authors describe the introduction to date of a formal planning process at a British manufacturing company which, according to its recent performance, had no pressing need to implement radical change. Is Rolls-Royce Motors' decision the symptom of a new trend in industry to overhaul planning techniques while the going is good? How was company morale used to justify a new planning style? Why did an evidently capable organization choose to engage consultancy assistance? While the company's intentions are not yet fully achieved, its experience may be of benefit to others contemplating a similar decision. 相似文献
39.
40.
Peter Hall Stephen M.-S. Lee & G. Alastair Young 《Journal of the Royal Statistical Society. Series B, Statistical methodology》2000,62(2):479-491
We show that, in the context of double-bootstrap confidence intervals, linear interpolation at the second level of the double bootstrap can reduce the simulation error component of coverage error by an order of magnitude. Intervals that are indistinguishable in terms of coverage error with theoretical, infinite simulation, double-bootstrap confidence intervals may be obtained at substantially less computational expense than by using the standard Monte Carlo approximation method. The intervals retain the simplicity of uniform bootstrap sampling and require no special analysis or computational techniques. Interpolation at the first level of the double bootstrap is shown to have a relatively minor effect on the simulation error. 相似文献