首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   979篇
  免费   46篇
管理学   147篇
民族学   6篇
人口学   96篇
丛书文集   5篇
理论方法论   136篇
综合类   14篇
社会学   506篇
统计学   115篇
  2023年   4篇
  2022年   4篇
  2021年   4篇
  2020年   14篇
  2019年   30篇
  2018年   26篇
  2017年   40篇
  2016年   45篇
  2015年   20篇
  2014年   32篇
  2013年   161篇
  2012年   41篇
  2011年   37篇
  2010年   32篇
  2009年   22篇
  2008年   29篇
  2007年   37篇
  2006年   37篇
  2005年   24篇
  2004年   27篇
  2003年   22篇
  2002年   38篇
  2001年   20篇
  2000年   17篇
  1999年   24篇
  1998年   13篇
  1997年   8篇
  1996年   17篇
  1995年   14篇
  1994年   7篇
  1993年   10篇
  1992年   13篇
  1991年   14篇
  1990年   17篇
  1989年   7篇
  1988年   13篇
  1987年   8篇
  1985年   11篇
  1984年   8篇
  1983年   5篇
  1982年   10篇
  1981年   4篇
  1980年   7篇
  1979年   6篇
  1977年   3篇
  1975年   11篇
  1974年   4篇
  1971年   5篇
  1970年   3篇
  1969年   3篇
排序方式: 共有1025条查询结果,搜索用时 875 毫秒
201.
ABSTRACT.

Employment hope is an aspect of psychological self-sufficiency that captures the process of empowerment for low-income job seekers. It is posited that this process of maintaining and developing employment hope contributes to the economic self-sufficiency outcome. The preliminary 14-item 2-factor Employment Hope Scale (EHS) was previously developed using an exploratory factor analysis (Hong, Polanin, & Pigott, 2012). This study examines whether the same items could be validated using a multisample confirmatory factor analysis (CFA). Given the unsatisfied model fit of the original 2-factor model, it was modified into a 4-factor model guided by theoretical suggestion from an earlier focus-group study. The multisample CFA on the modified model explained the data significantly better than did the initial model across 2 independent samples. Reliability and validity tests confirmed the factor structure of the modified model. This study confirms that the revalidated Short EHS (EHS-14) is a more robust version of the scale. Further research is needed to demonstrate its utility as a tool to benchmark the pre-employment client empowerment process in workforce development and to monitor postemployment employee support needs in the workplace for retention.  相似文献   
202.
Programs using means tests to identify low-income households face a trade-off between promoting access and ensuring program integrity. The authors use a comparison-district design to estimate the effects of a pilot program to improve the accuracy of the process of certifying students for free or reduced-price meals in the National School Lunch Program. This pilot program required households to provide income documentation with their applications for these benefits. Requiring income documentation did not reduce the proportion of ineligible households getting free or reduced-price meals. Furthermore, this requirement did reduce access to the program among eligible households.  相似文献   
203.
We study the recently introduced Connected Feedback Vertex Set (CFVS) problem from the view-point of parameterized algorithms. CFVS is the connected variant of the classical Feedback Vertex Set problem and is defined as follows: given a graph G=(V,E) and an integer k, decide whether there exists F?V, |F|??k, such that G[V?F] is a forest and G[F] is connected. We show that Connected Feedback Vertex Set can be solved in time O(2 O(k) n O(1)) on general graphs and in time $O(2^{O(\sqrt{k}\log k)}n^{O(1)})$ on graphs excluding a fixed graph H as a minor. Our result on general undirected graphs uses, as a subroutine, a parameterized algorithm for Group Steiner Tree, a well studied variant of Steiner Tree. We find the algorithm for Group Steiner Tree of independent interest and believe that it could be useful for obtaining parameterized algorithms for other connectivity problems.  相似文献   
204.
This paper re-examines a key feature of Emile Durkheim's sociology of knowledge from a critical realist perspective. It is argued that Durkheim's attempt to establish a social basis for the categories in The Elementary Forms of Religious Life should be understood along ontological rather than epistemological lines. This brings to light new problems with the argument which, however, can be brought fruitfully into contact with the more recent social psychological literature on collective intentionality. This yields insights into future lines of inquiry into social cognition and theories of human conceptualizing capacities.  相似文献   
205.
206.
For some time now, the out-of-wedlock birthrate has been increasing rapidly in the United States. This has prompted several states to propose (and in some cases, enact) legislation to deny access to higher AFDC benefits for families in which the mother gives birth while receiving AFDC. The authors investigate whether AFDC benefit levels are systematically related to the family-size decisions of never-married women. Using a bivariate probit model with state and time fixed effects, applied to Current Population Survey data for the years 1980–1988, it is found that the basic benefit level for a family of two (one adult and one child) and the incremental benefit for a second child positively affects the family size decisions of black and Hispanic women, but not of white women. The effects are concentrated among high school dropouts (no effects are found for high school graduates). The authors conclude that rather than to uniformly deny benefits to all AFDC women that bear children, a better targeted policy might be to alter the AFDC benefit structure in such a way as to encourage single mothers to complete high school. However, being a high school dropout might be a proxy for some other underlying characteristic of the woman, and encouraging women to complete high school who otherwise would not might have no effect whatsoever on nonmarital births.  相似文献   
207.
Child support and welfare dependence: A multinomial logit analysis   总被引:1,自引:0,他引:1  
The relation between welfare dependency and receipt of child support is investigated with data from a special supplement to the Current Population Survey. The impact of receiving child support on a family's welfare status is estimated and the types of families for which child support enforcement policies may have the greatest impact are identified. Overall, the results indicate that receipt of child support has a modest impact on reducing welfare dependency. However, the results also indicate that if child support obligations can be established and enforced shortly after a marital dissolution takes place, the likelihood that a family will later become a welfare recipient is significantly reduced.  相似文献   
208.
How does POSSLQ measure up? Historical estimates of cohabitation   总被引:1,自引:0,他引:1  
Casper LM  Cohen PN 《Demography》2000,37(2):237-245
We use March Current Population Survey (CPS) data from 1977 to 1997 to produce a new historical series of indirect cohabitation prevalence estimates. We compare our new estimates with those produced by the traditional method and evaluate the new estimates. We then compare the indirect estimates with the new direct estimates to investigate whether biases exist in the indirect estimates. Our findings indicate that the traditional indirect method of estimating cohabitation prevalence underestimates cohabitors in different subpopulations, especially among those with children. We also find that the new indirect measure produces relatively unbiased estimates of cohabitors' characteristics.  相似文献   
209.
Parity-specific probabilities of having a next birth are estimated from national fertility data and are compared with nation-specific costs of having children as measured by time-budget data, by attitude data from the International Social Survey Program, and by panel data on labor earnings and standard of living changes following a birth. We focus on five countries (the United States, the former West Germany, Denmark, Italy, and the United Kingdom), whose fertility rates span the observed fertility range in the contemporary industrialized world and whose social welfare and family policies span the conceptual space of standard welfare-state typologies. Definitive conclusions are difficult because of the multiple dimensions on which child costs can be measured, the possibility that child costs affect both the quantum and the tempo of fertility, the relatively small fertility differences across industrialized nations, and the inherent small-N problem resulting from nation-level comparisons. Empirical analysis, however, supports the assertion that institutionally driven child costs affect the fertility patterns of industrialized nations.  相似文献   
210.
On the basis of research on paired Muslim and non‐Muslim communities selected in India, Malaysia, Thailand, and the Philippines, the authors test the hypothesis that greater observed Muslim pronatalism can be explained by less power or lower autonomy among Muslim women. Indeed, wives in the Muslim communities, compared to the non‐Muslim ones: 1) had more children, 2) were more likely to desire additional children, and 3) if they desired no more children, were less likely to be using contraception. However, the authors do not find that Muslim communities consistently score lower on dimensions of women's power/autonomy. Thus, aggregate‐level comparisons provide little evidence of a relationship between lower autonomy and higher fertility. Individual‐level multivariate analysis of married women in these paired settings similarly suggests that women's autonomy differentials do not account for the higher fertility, demand for more children, and less use of contraception among Muslim wives. These results suggest that explanations for Muslim/non‐Muslim fertility differences lie elsewhere.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号