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   2395篇
  免费   52篇
管理学   430篇
民族学   20篇
人口学   240篇
丛书文集   14篇
理论方法论   257篇
综合类   25篇
社会学   1131篇
统计学   330篇
  2023年   20篇
  2022年   13篇
  2021年   27篇
  2020年   55篇
  2019年   64篇
  2018年   62篇
  2017年   89篇
  2016年   76篇
  2015年   57篇
  2014年   96篇
  2013年   432篇
  2012年   89篇
  2011年   82篇
  2010年   77篇
  2009年   70篇
  2008年   77篇
  2007年   78篇
  2006年   72篇
  2005年   64篇
  2004年   49篇
  2003年   47篇
  2002年   67篇
  2001年   55篇
  2000年   36篇
  1999年   37篇
  1998年   40篇
  1997年   21篇
  1996年   35篇
  1995年   26篇
  1994年   26篇
  1993年   30篇
  1992年   22篇
  1991年   23篇
  1990年   15篇
  1989年   15篇
  1988年   22篇
  1987年   21篇
  1986年   19篇
  1984年   19篇
  1983年   24篇
  1982年   22篇
  1981年   16篇
  1980年   22篇
  1979年   21篇
  1978年   13篇
  1977年   10篇
  1976年   16篇
  1975年   19篇
  1974年   11篇
  1973年   10篇
排序方式: 共有2447条查询结果,搜索用时 10 毫秒
921.
Set up as a one-group pre-test–post-test follow-up design, this study examines the outcomes of intensive family preservation services (IFPS) in Flanders addressing the following research questions: Does IFPS make a significant difference concerning (1) the interaction between parent and child? (2) social support as experienced by the parent? (3) stress and empowerment of the parent? and (4) the strengths and difficulties of the minor? Families seem to indicate that their family situation is more manageable, although still, professional help is needed. Parents feel more resilient about the situation and indicate that they can get along with their child better than before the crisis intervention. Parents still feel uncertain about the future and about their role as a parent. There seems to be no indications that their level and quality of social contacts have changed. Further research is suggested to provide more in-depth information about the conditions associated with processes of change during an IFPS intervention.  相似文献   
922.
The common in-group identity model advocates the creation of a superordinate group identity in order to reduce conflict between members of different ethnic subgroups. This study demonstrates that a university identity can serve as an effective common in-group identity for students from different ethnic groups. Longitudinal data were collected from an ethnically diverse sample of university students at the end of each year of college. Although ethnic identification tended to be correlated with status-legitimizing orientations and ideologies in a way that reinforces ethnic-status differences (i.e., these variables tended to be positively related for Whites but less so for ethnic minorities), the status-legitimizing variables were largely unrelated to university identification during each year in college. The longitudinal data also allowed us to examine these relationships over time. The relationships between ethnic and university identification and status-legitimizing orientations and ideologies did not change. Ethnic and university identities are discussed in terms of the common in-group identity model.  相似文献   
923.
924.
Product and waste take‐back is becoming more regulated by countries to protect the environment. Such regulation puts an economic burden on firms, while creating fairness concerns and potentially even missing its primary target: environmental benefits. This research discusses the economic and environmental impacts of extended producer responsibility type of legislation and identifies efficiency conditions. It is shown that the right policy would (i) make producers responsible for their own waste to avoid fairness concerns and (ii) favor eco‐design producers to create stronger environmental benefits. Furthermore, the efficiency of take‐back systems is also driven by environmental classification of products, industry structure, and end‐user willingness to participate in take‐back programs.  相似文献   
925.
Previous studies on the social well-being of residents living in energy boomtowns focus primarily on demographic characteristics of residents. These studies do not consider that there could be a relationship between residents’ social well-being and whether they interact with new residents moving into their community. The current study includes a measure of interaction with new residents as it examines five dimensions of the social well-being of residents living in an oil boomtown in western North Dakota. Surveys were distributed door-to-door to residents living in Williston North Dakota during the fall of 2015. Research findings show that people who reported that they interact with new residents moving into their community felt safe from crime and violence in their community; felt more socially integrated in their community; had high levels of community trust and community satisfaction, and believed that they could count on their neighbors. These findings are important because they highlight the significance of social interaction in communities that experience rapid population growth resulting from increased energy production.  相似文献   
926.
Objectives. This article provides an examination of how men and women spend their recreational attendance time and how their behavior differs when they are single and married. The battle of the sexes model and the theory of artistic human capital acquisition from one's spouse both suggest that married individuals will have different patterns of attendance than singles. Methods. Using data from the Performing Arts Research Coalition, we estimate a number of models to examine the differences between male and female attendance at art, professional sports, and popular culture events for those single and married. Results. We find that single males prefer sports, while single females prefer the arts. As predicted by the battle of the sexes model, men are more likely and women less likely to attend art events after marriage. This increase in male attendance is also predicted by human capital models of attendance that argue that the choice of art events is based on acquired tastes that can be influenced by the human capital of one's spouse. The battle of the sexes model, however, also predicts a decline in male and an increase in female attendance at professional sports. We find a small increase in female, but also an increase in male, attendance. Conclusions. The behavior of married and single males and females tends to correspond to the predictions made by the battle of the sexes and human capital models of attendance.  相似文献   
927.
Confidence intervals for the difference of two binomial proportions are well known, however, confidence intervals for the weighted sum of two binomial proportions are less studied. We develop and compare seven methods for constructing confidence intervals for the weighted sum of two independent binomial proportions. The interval estimates are constructed by inverting the Wald test, the score test and the Likelihood ratio test. The weights can be negative, so our results generalize those for the difference between two independent proportions. We provide a numerical study that shows that these confidence intervals based on large‐sample approximations perform very well, even when a relatively small amount of data is available. The intervals based on the inversion of the score test showed the best performance. Finally, we show that as for the difference of two binomial proportions, adding four pseudo‐outcomes to the Wald interval for the weighted sum of two binomial proportions improves its coverage significantly, and we provide a justification for this correction.  相似文献   
928.
This paper explores thefeasibility of improving regional internationalmigration assumptions by analysing therelationship between international migrationflows and foreign population structures.Regional projection models are discussed andempirically tested using data for Sweden. Theresults show that regional assumptions oninternational migration of foreigners could beimproved by using the spatial distribution ofstocks of foreigners as predictor.Improvements, however, are only minor and donot seem to compensate for the loss insimplicity of the models. This is especiallytrue at the aggregate level of immigrantgroups. Only for relatively new immigrantgroups, improvements are substantial.  相似文献   
929.
An “East–West” divide in contraceptive use patterns has been identified across Europe, with Western European countries characterized by the widespread use of modern contraception, and Central and Eastern European countries characterized by a high prevalence of withdrawal, the rhythm method, or abortion. Building on the Ready–Willing–Able framework, this study aims to gain more insight into the micro- and macro-level socioeconomic, cultural, and technological determinants underlying contraceptive use. Data from the Generations and Gender Survey (2004–2011) covering four Western and seven Central and Eastern European countries are used, and multinomial multilevel analyses are performed. Results reveal that individuals who intend to delay parenthood are more likely to use any contraceptive method, whereas holding more traditional values and having a lower socioeconomic status are associated with a higher likelihood of using no or only traditional methods. Regional reproductive rights and gender equality interact in complex ways with these associations. At minimum, our results underline the complexity of the processes underlying the persistent difference in contraceptive use across Europe.  相似文献   
930.
In this article, Dutch family reconstructions from the period 1820–1885 are analyst. Cox regression on birth intervals discloses that couples deliberately increased birth intervals already before the onset of the fertility transition. Spacing was not related to a targeted family size or to the sex composition of the family. Rather, the (temporary) burden of young, dependent children induced the parents to delay the next conception. Catholics and orthodox Protestants had shorter birth intervals than liberal Protestants, either because they rejected breastfeeding or because they were reluctant to experiment with birth spacing. Relatively long birth intervals were prevalent in the lowest social groups, whereas farmers and the self-employed middle class tended towards short intervals.  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