全文获取类型
收费全文 | 11206篇 |
免费 | 176篇 |
国内免费 | 1篇 |
专业分类
管理学 | 1680篇 |
民族学 | 42篇 |
人才学 | 1篇 |
人口学 | 1009篇 |
丛书文集 | 50篇 |
理论方法论 | 937篇 |
综合类 | 131篇 |
社会学 | 5142篇 |
统计学 | 2391篇 |
出版年
2023年 | 58篇 |
2020年 | 152篇 |
2019年 | 217篇 |
2018年 | 286篇 |
2017年 | 361篇 |
2016年 | 273篇 |
2015年 | 180篇 |
2014年 | 267篇 |
2013年 | 1844篇 |
2012年 | 360篇 |
2011年 | 328篇 |
2010年 | 260篇 |
2009年 | 255篇 |
2008年 | 249篇 |
2007年 | 292篇 |
2006年 | 268篇 |
2005年 | 272篇 |
2004年 | 250篇 |
2003年 | 238篇 |
2002年 | 266篇 |
2001年 | 262篇 |
2000年 | 243篇 |
1999年 | 238篇 |
1998年 | 179篇 |
1997年 | 187篇 |
1996年 | 193篇 |
1995年 | 147篇 |
1994年 | 153篇 |
1993年 | 146篇 |
1992年 | 181篇 |
1991年 | 163篇 |
1990年 | 161篇 |
1989年 | 148篇 |
1988年 | 132篇 |
1987年 | 118篇 |
1986年 | 112篇 |
1985年 | 131篇 |
1984年 | 154篇 |
1983年 | 162篇 |
1982年 | 138篇 |
1981年 | 132篇 |
1980年 | 118篇 |
1979年 | 118篇 |
1978年 | 113篇 |
1977年 | 113篇 |
1976年 | 94篇 |
1975年 | 84篇 |
1974年 | 69篇 |
1973年 | 78篇 |
1971年 | 56篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Approximations of the Bayesian estimators of the survival function based on the censored data of the log-logistic distribution are obtained under squared-error and log-odds squared-error loss functions. A numerical example is presented. Through a Monte Carlo simulation study, the behavior of the approximations found by Tierney & Kadane and Lindley are compared with a method suggested by Weiss & Howlader. 相似文献
72.
73.
74.
75.
Abstract The objective of this study is to examine female labor force participation and its determinants in rural and urban China. The sociological literature has demonstrated that participation tends to increase in urban and industrialized places where women have higher levels of education and fewer children, where more workers are engaged in service pursuits, and where family structure is less traditional. With the use of data on counties and cities (N = 2,377) from the I-percent sample of the 1982 census of the People's Republic of China, it was found that female labor force participation is likely to rise in areas with increased agricultural employment, educational levels, proportion of female-headed households, and higher male-to-female sex ratios. Both the size of the service sector and the fertility rate had negligible effects on female labor force participation. Although, on average, rural places have slightly higher levels of female labor force participation, when other variables are controlled, urban places have a higher rate of female participation. In addition, the findings suggest that market factors (i.e., education) are more likely to determine the rate of female labor force participation in urban areas; whereas demographic and social factors (i.e., sex ratio and household structure) play a more important role in explaining the female labor force participation in rural counties. 相似文献
76.
77.
J. Richard Udry 《Demography》1994,31(4):561-573
I explain a biosocial model of women’s gendered behavior (behavior on which the sexes differ). This model integrates a macro sociological theory with a biological theory derived from primate behavior. The sociological model is designed to explain changes in the relationship between sex and behavior over time or between groups. The biological model is designed to explain individual within-sex variance and between-sex variance in gendered behavior in a cohort. Results from an original study are presented to demonstrate that within-sex variance in women’s gendered behavior is explained well by the primate model. I conclude that human nature is gendered. The implications of this conclusion are explored for demographic and other social science research. 相似文献
78.
The mean density of bacteria in a water body is commonly monitored using quantal assay. This paper describes the use of local scoring in estimating the spatial distribution of mean density from quantal assay results at a set of point locations. An application to estimating the mean density of fecal conform bacteria in a coastal pond is presented. Model diagnostics based on a parametric bootstrap are also presented. 相似文献
79.
80.