全文获取类型
收费全文 | 15167篇 |
免费 | 348篇 |
专业分类
管理学 | 2022篇 |
民族学 | 73篇 |
人才学 | 2篇 |
人口学 | 1310篇 |
丛书文集 | 97篇 |
教育普及 | 2篇 |
理论方法论 | 1401篇 |
综合类 | 360篇 |
社会学 | 7696篇 |
统计学 | 2552篇 |
出版年
2021年 | 81篇 |
2020年 | 219篇 |
2019年 | 249篇 |
2018年 | 292篇 |
2017年 | 432篇 |
2016年 | 343篇 |
2015年 | 261篇 |
2014年 | 310篇 |
2013年 | 2532篇 |
2012年 | 451篇 |
2011年 | 406篇 |
2010年 | 280篇 |
2009年 | 290篇 |
2008年 | 322篇 |
2007年 | 358篇 |
2006年 | 274篇 |
2005年 | 415篇 |
2004年 | 359篇 |
2003年 | 320篇 |
2002年 | 326篇 |
2001年 | 358篇 |
2000年 | 341篇 |
1999年 | 351篇 |
1998年 | 255篇 |
1997年 | 249篇 |
1996年 | 259篇 |
1995年 | 237篇 |
1994年 | 239篇 |
1993年 | 220篇 |
1992年 | 277篇 |
1991年 | 278篇 |
1990年 | 248篇 |
1989年 | 250篇 |
1988年 | 222篇 |
1987年 | 218篇 |
1986年 | 215篇 |
1985年 | 211篇 |
1984年 | 234篇 |
1983年 | 239篇 |
1982年 | 195篇 |
1981年 | 169篇 |
1980年 | 165篇 |
1979年 | 192篇 |
1978年 | 169篇 |
1977年 | 135篇 |
1976年 | 127篇 |
1975年 | 118篇 |
1974年 | 117篇 |
1973年 | 103篇 |
1971年 | 73篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
801.
The empirical literature on the impact of HIV on the quality (Q) and quantity (N) of children provides limited and somewhat mixed evidence. This study introduces individual HIV risk perceptions, as a predictor of mortality, into a Q–N investment model. In this model, higher maternal mortality predicts lower N, while higher child mortality predicts lower Q. Thus, the two effects together make likely negative associations between HIV and both Q and N. Based on longitudinal micro-data on mothers and their children in rural Malawi, our results suggest that higher mothers’ reported HIV risk reduces both child quality, as reflected in children’s schooling and health, and child quantity, when the perceived risk is already moderate or high. The effects are sizable and, in the case of Q (schooling and health), are found for children and teenagers, both boys and girls, while in the case of N, they are found for young and mature women. 相似文献
802.
Ronald R. Rindfuss Minja Kim Choe Sarah R. Brauner-Otto 《Population research and policy review》2016,35(3):287-304
Beginning in 2000, in economically advanced countries, a remarkable bifurcation in fertility levels has emerged, with one group in the moderate range of period total fertility rates, about 1.9, and the other at 1.3. The upper branch consists of countries in Northern and Western Europe, Oceania and the United States; the lower branch includes Central, Southern, and Eastern Europe, and East and Southeast Asia. A review of the major theories for low-fertility countries reveals that none of them would have predicted this specific bifurcation. We argue that those countries with fertility levels close to replacement level have institutional arrangements, and related policies, that make it easier, not easy, for women to combine the worker and mother roles. The institutional details are quite different across countries, suggesting that multiple combinations of institutional arrangements and policies can lead to the same country-level fertility outcome. Canada, the only exception to this bifurcation, illustrates the importance of the different institutional structures in Québec compared to the rest of Canada. 相似文献
803.
William P. O’Hare J. Gregory Robinson Kirsten West Thomas Mule 《Population research and policy review》2016,35(5):685-704
Following every U.S. decennial census since 1960, the U.S. Census Bureau has evaluated the completeness of coverage using two different methods. Demographic analysis (DA) compares the census counts to a set of independent population estimates to infer coverage differences by age, sex, and race. The survey-based approach (also called dual system estimation or DSE) provides coverage estimates based on matching data from a post-enumeration survey to census records. This paper reviews the fundamentals of the two methodological approaches and then initially examines the results of these two methods for the 2010 decennial census in terms of consistency and inconsistency for age groups. The authors find that the two methods produce relatively consistent results for all age groups, except for young children. Consequently, the paper focuses on the results for children. Results of the 1990, 2000, and 2010 decennial censuses are shown for the overall population in this age group and by demographic detail (age, race, and Hispanic origin). Among children, the DA and DSE results are most inconsistent for the population aged 0–4 and most consistent for ages 10–17. Results also show that DA and DSE are more consistent for Black than non-Black populations. The authors discuss possible explanations for the differences in the two methods for young children and conclude that the DSE approach may underestimate the net undercount of young children due to correlation bias. 相似文献
804.
805.
806.
807.
Jordan Soliz Allison R. Thorson Christine E. Rittenour 《Journal of marriage and the family》2009,71(4):819-832
Guided by the Common Ingroup Identity Model ( S. L. Gaertner & J. F. Dovidio, 2000 ) and Communication Accommodation Theory ( C. Shepard, H. Giles, & B. A. LePoire, 2001 ), we examined the role of identity accommodation, supportive communication, and self‐disclosure in predicting relational satisfaction, shared family identity, and group salience in multiracial/ethnic families. Additionally, we analyzed the association between group salience and relational outcomes as well as the moderating roles of multiracial/ethnic identity and marital status. Individuals who have parents from different racial/ethnic groups were invited to complete questionnaires on their family experiences. Participants (N = 139) answered questions about relationships with mothers, fathers, and grandparents. The results of the multilevel modeling analyses are discussed in terms of implications for understanding multiracial/ethnic families and family functioning. 相似文献
808.
Treating clients from diverse cultural backgrounds, and supervising clinicians who are treating clients of the same ethnicity
and gender, are now common experiences in our mental health system. As the growth of minorities in the US greatly outpaces
the training of minority clinicians, more attention to these situations is needed. Operating from the premise that interpersonal
sensitivity is a fundamental aspect of cross-cultural and cross-ethnic sensitivity, we describe the treatment of a Latino
male by a Latino male clinician, in this case both of Puerto Rican descent. We outline the contours of the therapy with a
man whose life history included numerous incidents of humiliation and thwarted efforts at efficacy, mastery, agency, and competence,
resulting in an adult character structure based on shame and self-doubt. We also discuss the challenges to the clinician posed
by working with a man whose traditional upbringing mirrored his own, with all the positives and negatives that must be considered
in the countertransference. We describe clinical and cultural reasons for various interventions, and their resulting outcome.
The framework of a dynamic interpersonal therapy and the challenges of transference, countertransference, therapist disclosure,
and working-through are covered. 相似文献
809.
We consider the fraction of pairs of m distinct alternatives on which a social welfare function f may be nondictatorially independent and Pareto when the domain of f satisfies the free k-tuple property. When k = 4 we improve the existing upper bound to . When there are at least 26 alternatives and we obtain an original upper bound, . To obtain these results we define and analyze the graph formed from the nondictatorial independent and Pareto pairs and
combine the results of this analysis with known results from extremal graph theory.
The authors extend special thanks to the two reviewers and the editor for their comments. 相似文献
810.
The positive association between moderate alcohol consumption and wages is well documented in the economic literature. Positive
health effects as well as networking mechanisms serve as explanations for the “alcohol–income puzzle.” Using individual-based
microdata from the SOEP for 2006, we confirm that this relationship exists for Germany as well. More importantly, we shed
light on the alcohol–income puzzle by analyzing, for the first time, the association between beverage-specific drinking behavior
and wages. In our analysis, we disentangle the general wage effect of drinking into diverse effects for different types of
drinkers. Mincerian estimates reveal significant and positive relationships between wine drinkers and wages as well as between
multiple beverage drinkers and wages. When splitting the sample into age groups, the “drinking gain” disappears for employees
under the age of 35 and increases in size and significance for higher age groups. We also find a “beer gain” for the oldest
age group and male residents of rural areas as well as a “cocktail gain” for residents of urban areas. Several explanations
for our empirical results are discussed in view of the likelihood that the alcohol–income puzzle is a multicausal phenomenon.
相似文献
Markus M. GrabkaEmail: |