全文获取类型
收费全文 | 1805篇 |
免费 | 78篇 |
专业分类
管理学 | 228篇 |
民族学 | 9篇 |
人口学 | 178篇 |
丛书文集 | 11篇 |
理论方法论 | 198篇 |
综合类 | 9篇 |
社会学 | 1032篇 |
统计学 | 218篇 |
出版年
2023年 | 8篇 |
2021年 | 12篇 |
2020年 | 22篇 |
2019年 | 51篇 |
2018年 | 58篇 |
2017年 | 78篇 |
2016年 | 63篇 |
2015年 | 39篇 |
2014年 | 48篇 |
2013年 | 316篇 |
2012年 | 65篇 |
2011年 | 71篇 |
2010年 | 46篇 |
2009年 | 49篇 |
2008年 | 55篇 |
2007年 | 50篇 |
2006年 | 54篇 |
2005年 | 38篇 |
2004年 | 49篇 |
2003年 | 44篇 |
2002年 | 48篇 |
2001年 | 42篇 |
2000年 | 40篇 |
1999年 | 35篇 |
1998年 | 32篇 |
1997年 | 32篇 |
1996年 | 34篇 |
1995年 | 21篇 |
1994年 | 27篇 |
1993年 | 22篇 |
1992年 | 24篇 |
1991年 | 30篇 |
1990年 | 28篇 |
1989年 | 17篇 |
1988年 | 17篇 |
1987年 | 12篇 |
1986年 | 13篇 |
1985年 | 27篇 |
1984年 | 20篇 |
1983年 | 16篇 |
1982年 | 18篇 |
1981年 | 8篇 |
1980年 | 16篇 |
1979年 | 12篇 |
1978年 | 8篇 |
1977年 | 11篇 |
1976年 | 12篇 |
1974年 | 8篇 |
1970年 | 5篇 |
1968年 | 5篇 |
排序方式: 共有1883条查询结果,搜索用时 250 毫秒
961.
Using the statistical theory of discrimination, we argue that initial wage offers may be lower for minority workers, but that wage differences for a given level of productivity should diminish with the worker's job tenure. If a wage subsidization policy is designed so that initial wage offers are equal for majority and minority workers and is maintained for a time period sufficient to demonstrate true productivity, then wage differences for a given level of productivity should disappear. We also provide an empirical test of the effectiveness of such a policy by using a sample of participants in a government job program that enforced equal wage schedules for White and Black workers. Our results show that measured discrimination declined among program participants, supporting the hypothesis that wage subsidies would be an effective anti-discrimination policy. 相似文献
962.
Abstract Marriage and birth registrations for the Canadian province of British Colombia have been 'linked' by computer into family groupings to provide reproductive histories of married couples. The usefulness of the approach is illustrated by a comparison of the early productivities of marriages contracted in 1961 and in 1951, taking into account the age of the bride, the duration of the marriage, and the religions of the groom, bride and officiating clergyman. Older Catholic brides are shown to run counter to the otherwise general trend towards increasing productivity in the early years of marriage. 相似文献
963.
Spraggins Reneé E. Meyer Julie A. Hetzel Lisa I. Smith Denise I. 《Population research and policy review》2002,21(1-2):73-90
Recently data on age and sex for the United States have beenreleased in the Census 2000 data product Summary File 1. This paper presents someearly analysis on the shape of the age and sex structure from Census 2000 data throughstatistics and graphics on national and sub-national levels. Also highlighted are comparisonswith data from the 1990 census. 相似文献
964.
965.
We use a method of standardization and decomposition developed by Das Gupta to update Smith and Cutright’s analysis of demographic factors responsible for increases in the nonmarital fertility ratio (illegitimacy ratio) among blacks and whites in the United States. We create standardized rates for each year between 1960 and 1992, and consistent, exhaustive decompositions of the nonmarital fertility ratio for any interval during this period in terms of four components: (1) the age distribution of women of reproductive age, (2) the proportion of women unmarried at each age, (3) the age-specific birth rates of married women, and (4) the age-specific birth rates of unmarried women. Nonmarital fertility ratios are much higher among blacks than among whites, but both increased monotonically from 1960 to 1992. During the last 10 years, each increased by nearly 10 percentage points. Increases in the proportion of women not married, at all ages, account for the preponderance of the increase in black nonmarital fertility ratios. Increasing rates of unmarried childbearing, however, have played a role during the most recent decade (1983–1992). For whites, from 1960 until 1975, declines in marital fertility were most important in producing increases in the proportion of children born out of wedlock. Since then, these proportions have increased primarily because of increases in unmarried women s birth rates, and secondarily because of declines in the proportion of women who are married. These trends are consistent with arguments that emphasize declining economic incentives to marry and reduced access to, and acceptability of, abortion. 相似文献
966.
967.
Has China’s strict one-child policy been successful in changing fertility preferences? Using linked data from surveys conducted in four counties of northern China in 1991 and 1994, we compare reproductive behavior against prior fertility preferences and show when and where women change from wanting to not wanting more children. The acceptance of policy-sanctioned family size follows a development gradient and reflects the degree of enforcement. High acceptance occurs in the most urban, industrialized county and in the county with the most rigid family planning policy. Acceptance is weaker among women living in the poorest county and in the county where enforcement is most lenient. 相似文献
968.
Michaela N. Gelin Bruce C. Carleton M. Anne Smith Bruno. D. Zumbo 《Social indicators research》2004,68(1):91-105
The present study investigated the factorstructure and item analysis of the Mini AsthmaQuality of Life Questionnaire (MiniAQLQ) in asample of 258 community-dwelling asthmaticadults between the ages of 16 and 87 years. The mean age was 56 years for males (N = 99) and50 years for females (N = 159). This studycompared the fit of three factor solutionsusing a maximum likelihood confirmatory factoranalysis. Based on the fit indices, supportwas found for a hierarchical factor structurewith a second-order factor of quality of lifeand four first-order factors of symptoms,activity limitation, emotional function andenvironmental stimuli. Given that the data fitan essentially unidimensional model, genderdifferential item functioning (DIF) wasexplored using Zumbo's (1999) ordinal logisticregression method with corresponding logisticregression effect size estimators. Aftermatching males and females on the underlyingvariable of quality of life, gender DIF wasfound on the cigarette smoke and weather or air pollution items. Thesefindings indicate that gender influences how anindividual endorses these particular items onthe MiniAQLQ. 相似文献
969.
970.
Toni C. Antonucci Jennifer E. Lansford Hiroko Akiyama Jacqui Smith Margret M. Baltes Keiko Takahashi Rebecca Fuhrer & Jean–François Dartigues 《The Journal of social issues》2002,58(4):767-783
This article examines gender differences in social relations and resource deficits in France ( N = 553), Germany ( N = 516), Japan ( N = 491), and the United States ( N = 514). These data, from regionally representative samples, indicate few gender differences in quantity or quality of social relations, but that women are more likely than men to experience widowhood, illness, and financial strain. In all countries, more deficits and more negative social interactions are associated with higher levels of depressive symptoms. Interestingly, among women in France and Japan but not among men in any country, quality of social relations offsets the negative consequences of resource deficits. Findings suggest that quality of social relations may have important implications for helping people, particularly women, cope with resource deficits common in late life. 相似文献