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   846篇
  免费   37篇
各国政治   53篇
工人农民   114篇
世界政治   90篇
外交国际关系   35篇
法律   406篇
中国政治   14篇
政治理论   162篇
综合类   9篇
  2023年   11篇
  2021年   6篇
  2020年   22篇
  2019年   33篇
  2018年   21篇
  2017年   44篇
  2016年   41篇
  2015年   26篇
  2014年   32篇
  2013年   152篇
  2012年   24篇
  2011年   33篇
  2010年   27篇
  2009年   24篇
  2008年   39篇
  2007年   27篇
  2006年   19篇
  2005年   38篇
  2004年   30篇
  2003年   21篇
  2002年   21篇
  2001年   7篇
  2000年   13篇
  1999年   11篇
  1998年   14篇
  1997年   10篇
  1996年   10篇
  1995年   9篇
  1994年   12篇
  1993年   13篇
  1992年   8篇
  1991年   8篇
  1990年   6篇
  1989年   10篇
  1988年   3篇
  1987年   6篇
  1986年   2篇
  1985年   10篇
  1984年   5篇
  1983年   7篇
  1982年   2篇
  1980年   2篇
  1979年   2篇
  1978年   3篇
  1977年   2篇
  1976年   2篇
  1974年   2篇
  1973年   4篇
  1969年   2篇
  1968年   2篇
排序方式: 共有883条查询结果,搜索用时 15 毫秒
141.
Low back pain (LBP), a leading cause of disability, has been linked with profound economic, personal, and social costs (Hills 2006; World Health Organization 2003). This significant effect propels research in identifying modifiable risk factors that protract LBP; these factors can be targeted in early intervention (EI) (Pransky, Journal of Occupational & Environmental Medicine, 49(3):249–251, 2007; Schultz et al., Journal of Occupational Rehabilitation, 17:327–352, 2007, Journal of Occupational Rehabilitation, 18(2), 140–151, 2008; White et al. 2013). This randomized controlled study evaluated the effectiveness of two approaches, fixed versus flexible, in delivering proactive, interdisciplinary EI with 63 workers within a workers' compensation interdisciplinary case management setting (i.e., WorkSafeBC, Canada). Off-work 4 to 10 weeks post-back injury, the workers were also at risk of protracted work disability (N?=?24 at high risk; N?=?39 at moderate risk). Fixed, protocol-driven, interdisciplinary, multimodal, clinical, occupational, and case management-based EI was compared with a flexible, individual need-driven EI with the same modalities as the fixed approach. Results showed a significant narrowing of the outcome gap between the two interventions. High-risk injured workers tended to benefit more from a fixed, protocol-driven approach, as shown in the pilot study (Schultz et al. Journal of Occupational Rehabilitation, 18(2), 140–151, 2008). The results indicated that moderate-risk workers benefitted from a more flexible, need-based, individual, and low-intensity approach as compared with a fixed approach. The flexible approach for moderate-risk workers was also less costly and consumed fewer rehabilitation and health care resources. Recommendations for future research and practice included larger sample sizes, controllability of research interventions, risk for disability-EI matching, and conditions under which a flexible delivery of multimodal EI is more efficacious than a fixed approach, and vice versa.  相似文献   
142.
The decolonization period in Mauritius (1947–1968) gave rise to intense debates around the project of a Mauritian nation, named “Mauritianism”. This paper aims to analyse the reasons why Mauritianism remained an ambiguous concept. This “strategic Mauritianism” was framed within the consociational negociations held during that period, between the former dominant minority of the Franco-Mauritians, who championed an assimilationist form of nation, and the emerging dominant majority, the Hindus, who favoured an ethnicized “revivalist” conception of the nation.  相似文献   
143.
144.
Despite the ongoing centrality of marriage and reproduction in Vietnam, family and spousal separation is an increasing reality for many poor rural–urban migrants. We offer a social relational analysis of reproduction to explore how migrant men and women in their peak child-bearing and child-rearing years negotiate conjugal strategies and expectations. Labour migration for these poor men and women involves high costs for family relations, social identities and emotional experiences which are strongly patterned by gender. This social relational analysis of reproduction deepens analyses of changing marriage relations and studies of internal labour migration.  相似文献   
145.
146.

Purpose

This study investigated genetic and environmental commonalities and differences between aggressive and non-aggressive antisocial behavior (ASB) in male and female child and adolescent twins, based on a newly developed self-report questionnaire with good reliability and external validity -- the Self-Report Delinquency Interview (SR-DI).

Methods

Subjects were 780 pairs of twins assessed through laboratory interviews at three time points in a longitudinal study, during which the twins were: (1) ages 9-10 years; (2) age 11-13 years, and (3) age 16-18 years.

Results

Sex differences were repeatedly observed for mean levels of ASB. In addition, diverse change patterns of genetic and environmental emerged, as a function of sex and form of ASB, during the development from childhood to adolescence. Although there was some overlap in etiologies of aggressive and non-aggressive ASB, predominantly in shared environmental factors, their genetic overlap was moderate and the non-shared environmental overlap was low.

Conclusions

Taken together, these results reinforced the importance of differentiating forms of ASB and further investigating sex differences in future research. These results should be considered in future comparisons between youth self-report and parental or teacher report of child and adolescent behavior, and may help elucidate commonalities and differences among informants.  相似文献   
147.
148.
Freedom from personal attack and security of one's personal possessions are goals to which almost everyone subscribes ¾ from the derelicts clutching their bottles of cheap wine to millionaires worried about intrusions into their mansions. Reducing the risk of crime against our homes, our property and ourselves is a goal about which much consensus exists (Levine, et al., 1980: 22). Since formal means of crime control through the Criminal Justice Agencies only have been found to be ineffective, women must turn to community‐oriented policing as a welcome alternative for self‐protection. This article discusses the strategies women employ to cope with the rising incidence of crime.  相似文献   
149.
This study examined whether social support tied to relocation efforts and neighborhood social climate may mediate the effects of stressful life events on mental health outcomes following Hurricane Katrina. Participants were 108 adult persons made homeless by Hurricane Katrina and evacuated to Columbia, South Carolina. Civic leaders developed an intervention model that emphasized (a) a one-stop point of entry, (b) living in hotels and apartments rather than shelters, and (c) matching hotels with volunteer “hosts” to assist in relocation efforts. Results revealed that perceived neighborhood factors and satisfaction with host relationship were related to several mental health outcomes. Neighborhood social climate partially mediated several mental health outcomes. Implications of this intervention model and the utility of social ecological perspectives on homelessness interventions are discussed.  相似文献   
150.
How do changes in the economy translate into shifts in aggregate preferences for a more or less activist government in the U.S.—a construct referred to as “policy mood”? Existing theories pose alternative explanations based on either a Maslow Hierarchy of Needs model, where citizens prefer an activist federal government to expand the social safety net when the economic future looks bright (Durr, 1993), or a Phillips Curve model (Erikson et al., 2002), in which the objective economic maladies of inflation and unemployment drive policy mood. We show that neither of these explanations withstands empirical scrutiny when analysis is extended beyond the time period of the original authors' work, suggest the existing wisdom tying the economy to policy mood is wrong, and offer some alternative avenues to pursue in search of an answer to the question: What moves policy mood?  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