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   392篇
  免费   27篇
各国政治   25篇
工人农民   53篇
世界政治   30篇
外交国际关系   21篇
法律   215篇
中国政治   9篇
政治理论   59篇
综合类   7篇
  2023年   2篇
  2022年   2篇
  2021年   7篇
  2020年   7篇
  2019年   23篇
  2018年   18篇
  2017年   22篇
  2016年   13篇
  2015年   18篇
  2014年   20篇
  2013年   52篇
  2012年   19篇
  2011年   17篇
  2010年   10篇
  2009年   21篇
  2008年   16篇
  2007年   20篇
  2006年   17篇
  2005年   19篇
  2004年   9篇
  2003年   6篇
  2002年   11篇
  2001年   6篇
  2000年   7篇
  1999年   6篇
  1998年   5篇
  1997年   7篇
  1996年   1篇
  1995年   2篇
  1994年   4篇
  1993年   4篇
  1992年   4篇
  1991年   1篇
  1990年   1篇
  1988年   1篇
  1987年   3篇
  1986年   4篇
  1984年   3篇
  1983年   5篇
  1982年   3篇
  1980年   1篇
  1976年   1篇
  1972年   1篇
排序方式: 共有419条查询结果,搜索用时 406 毫秒
21.
The relationship between intergovernmental grants and public expenditures is one of the most studied phenomena in the local public finance literature. However, little is known about whether the impact of unconditional grants is fundamentally different from that of other sources of municipal revenue. We study this question by means of a large-scale randomised survey experiment among Danish local politicians, which allows for a comparison of the impact of changes in various sources of municipal revenue. Our findings challenge the conventional conception in the public finance literature that money works differently depending on which sector they are generated in. Instead, ideology plays an important role in explaining how local politicians want to allocate resources when faced with changes in local government revenue.  相似文献   
22.
Alcohol is the most commonly used substance among adolescents in the United States, and adolescent drinking is associated with various health risk behaviors. Given the prevalence and consequences of adolescent drinking, understanding family factors that contribute to adolescent drinking is an important area for research. This study used three waves of data to evaluate a family stress model in which economic hardship is indirectly related to adolescent problem drinking through maternal psychological distress, parenting behaviors, and adolescent externalizing behaviors. Respondents included 300 mothers (71 % Black, 29 % White) and adolescents (51 % male) who were interviewed when adolescents were ages 10, 14, and 16. Structural equation modeling was used to test the hypothesized model and findings supported our hypothesized model. Economic hardship was positively related to maternal psychological distress. Maternal psychological distress was negatively associated with supportive parenting, which in turn was negatively associated with externalizing problems. Externalizing problems were positively associated with problem drinking. In support of our hypothesis regarding indirect effects, economic hardship was indirectly related to problem drinking through maternal psychological distress, parenting behaviors, and adolescent externalizing problems. The findings from this study highlight the role of family processes in adolescent problem drinking.  相似文献   
23.
Spirituality/religiosity is hypothesized to promote positive adjustment among adolescents. The goals of this study were to assess the unique and joint associations between two dimensions of spirituality/religiosity—institutional and personal—and a range of domains of psychosocial adjustment (intrapersonal well-being, quality of parent–child relationship, substance use, and academic orientation) and to evaluate the direction of effects in these associations. Participants included 803 predominately Canadian-born adolescents (53 % female) from Ontario, Canada, who completed a survey in grade 11 and grade 12. At the concurrent level, higher personal spirituality/religiosity consistently and uniquely predicted more positive adjustment in terms of well-being, parental relationship, and academic orientation. Higher institutional spirituality/religiosity uniquely and consistently predicted lower substance use, particularly when personal spirituality/religiosity also was high. With regard to the direction of effects (i.e., longitudinal associations), institutional spirituality/religiosity predicted lower future substance use. The results imply that the personal and institutional dimensions of spirituality/religiosity may be associated differentially with psychosocial adjustment, and it may be only in the domain of substance use that spirituality/religiosity predicts change in behavior over time.  相似文献   
24.
This article focuses on the degree to which friends’ influence on substance use is conditioned by the consistency between their behavior and that of schoolmates (individuals enrolled in the same school, but not identified as friends), contributing to the literature on the complexity of interactive social influences during adolescence. Specifically, it hypothesizes that friends’ influence will diminish as their norms become less similar to that of schoolmates. The authors also propose that this conditioning relationship is related to the density of the friendship group. This study uses data from the National Longitudinal Survey of Adolescent Health (AddHealth) (n ~ 8,000, 55 % female) to examine the interactive relationship between friend and schoolmate influences on adolescent substance use (smoking and drinking). The sample contains students ranging from age 11 to 22 and is 60 % White. The findings demonstrate that, as the substance use of the friendship group becomes more dissimilar from schoolmates’ substance use, the friendship group’s influence on adolescent substance use diminishes. Further, the results demonstrate that this conditioning relationship does not emerge when the friendship group is highly dense.  相似文献   
25.
This article focuses on the transnational project, led by Turkish Independent Industrialists and Businessmen Association (Müsiad), of crafting a community of Islamic businessmen. The Arab Springs opened new opportunities to further this project, especially in Tunisia and Egypt where Islamist groups rose to power after 2011. In both countries, Müsiad supported the creation of two Islamic business associations, exporting its own organizational model. Examining this circulation process, we question the classical dichotomy between economic and advocacy transnational networks. We also show how this transnational activism is constrained by divergent domestic patterns of relationships between Islamists, business and states in each country.  相似文献   
26.
27.
Coalitions of free-marketeers, politicians, and environmentalists increasingly are turning to the use of market-based incentives in formulating environmental policy. One promising application of market-based incentives is in the management of residential municipal solid waste. This article focuses on unit-based pricing programs established in conjunction with community recycling programs. Using data gathered through telephone and mail surveys of 21 cities, we demonstrate the strong potential for unit pricing to improve the efficiency of residential solid waste management.  相似文献   
28.
Book reviews     
Islamic homeland, soviet section

Alexandre Bennigsen and Marie Broxup, The Islamic Threat to the Soviet State. London & Canberra: Croom Helm, 1983, 170 pp. Cloth, £12.95. ISBN 0–7099–0619–6.

Islam Today: the USSR

T. S. Saidbaev, Islam: istoriia i sovremennost. Moscow: Znanie, 1985, 64 pp., 47,290 copies. Series Nauchnyi Ateizm, No. 11, 1985.  相似文献   

29.
Germany's refusal to pursue active integration policies for three decades has unleashed surprising do-it-yourself-integration processes among migrant communities, as demonstrated by dramatic changes in the Turkish ethnic economy since 1990. This study embeds these developments in an analytical framework linking economic enclaves and urban citizenship. Initially motivated by structural unemployment and social exclusion, guestworkers and their offspring are turning to self-employment, not only adding new jobs to an otherwise moribund national economy but also promoting urban revitalization in cities like Berlin, Frankfurt and Cologne. The study outlines generational differences within the Turkish-German community, ascertaining that third-generation ethnics are more likely to start businesses outside the food sector and more willing to embrace FRG citizenship. It describes the size and scope of ethnic enterprises across Germany, followed by a treatment of women entrepreneurs in Berlin. Ethnic associations indirectly foster “participatory” consciousness among males, but women tend to identify directly with the society that offers opportunities not available to them in the purported Turkish homeland. Instead of producing “parallel societies” (as German politicians often insist), ethnic businesses and local community involvement are crucial in bridging majority and minority cultures, on the one hand, and in granting Turkish entrepreneurs top-level access to state policy-makers—even without the formal rights of citizenship.  相似文献   
30.
A DNA microarray system for forensic SNP analysis   总被引:3,自引:0,他引:3  
Forensic DNA analysis is routinely performed using polymorphic short tandem repeat (STR) markers. However, for degraded or minute DNA samples, analysis of autosomal single nucleotide polymorphisms (SNPs) in short fragments might be more successful. Furthermore, sequencing of mitochondrial DNA (mtDNA) is often performed on highly degraded or scarce samples due to the high copy number of mtDNA in each cell. Due to the increasing number of complete mtDNA genome sequences available, the limited discrimination power of an mtDNA analysis, may be increased by analysis of coding region polymorphisms in addition to the non-coding variation. Since sequence analysis of the coding region would require more material than generally present in forensic samples, an alternative SNP analysis approach is required. We have developed a one-colour microarray-based SNP detection system for limited forensic materials. The method is based on minisequencing in solution prior to hybridisation to universal tag-arrays. In a first outline of a forensic chip, a combination of 12 nuclear and 21 mitochondrial SNP markers are analysed simultaneously. The mitochondrial markers on the chip are polymorphisms within the hypervariable region as well as in the coding region. Even though the number of markers in the current system is limited, it can easily be extended to yield a greater power of discrimination. When fully developed, microarray analysis provides a promising system for efficient sensitive SNP analysis of forensic samples in the future.  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