全文获取类型
收费全文 | 5753篇 |
免费 | 131篇 |
专业分类
各国政治 | 236篇 |
工人农民 | 225篇 |
世界政治 | 456篇 |
外交国际关系 | 207篇 |
法律 | 3618篇 |
中国政治 | 49篇 |
政治理论 | 1076篇 |
综合类 | 17篇 |
出版年
2021年 | 40篇 |
2020年 | 69篇 |
2019年 | 103篇 |
2018年 | 131篇 |
2017年 | 115篇 |
2016年 | 119篇 |
2015年 | 70篇 |
2014年 | 119篇 |
2013年 | 583篇 |
2012年 | 140篇 |
2011年 | 156篇 |
2010年 | 122篇 |
2009年 | 138篇 |
2008年 | 168篇 |
2007年 | 162篇 |
2006年 | 149篇 |
2005年 | 135篇 |
2004年 | 159篇 |
2003年 | 123篇 |
2002年 | 100篇 |
2001年 | 310篇 |
2000年 | 277篇 |
1999年 | 193篇 |
1998年 | 79篇 |
1997年 | 79篇 |
1996年 | 52篇 |
1995年 | 54篇 |
1994年 | 48篇 |
1993年 | 38篇 |
1992年 | 121篇 |
1991年 | 139篇 |
1990年 | 131篇 |
1989年 | 126篇 |
1988年 | 113篇 |
1987年 | 125篇 |
1986年 | 100篇 |
1985年 | 95篇 |
1984年 | 96篇 |
1983年 | 83篇 |
1982年 | 57篇 |
1981年 | 73篇 |
1980年 | 34篇 |
1979年 | 73篇 |
1978年 | 43篇 |
1975年 | 37篇 |
1974年 | 49篇 |
1973年 | 54篇 |
1972年 | 39篇 |
1971年 | 34篇 |
1970年 | 29篇 |
排序方式: 共有5884条查询结果,搜索用时 15 毫秒
131.
The Central District Council (CDC) in Botswana expanded service delivery to five sub‐districts in January 2000 using a model adapted from the South Somerset District Council, UK. As little data were available on the effectiveness of decentralised service delivery, officials and councillors throughout CDC were interviewed regarding their perception of the process. They not only provided recommendations for enhanced implementation but also identified some of the tensions resulting from it. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
132.
Siegel Judith M. Aneshensel Carol S. Taub Bonnie Cantwell Dennis P. Driscoll Anne K. 《Journal of youth and adolescence》1998,27(4):413-427
This research assessed whether there is an impact of race-ethnicity on depressed mood among adolescents, independent of socioeconomic status, whether gender differences in depressed mood are apparent within all race-ethnicity subgroups, and whether pubertal development influences depressed mood in a similar manner within gender and race-ethnicity subgroups. A three-stage, area probability sampling frame was utilized to select adolescents, ages 12–17 years, for an in-person interview. Depressed mood was assessed by the Children's Depression Inventory. Compared to Whites, African Americans, or Asian Americans, Latinos reported more symptoms of depressed mood, a finding that was independent of socioeconomic status. Advancing puberty was associated with depressed mood only among females, but the timing of pubertal changes, relative to ones peers, was related to depressed mood among both males and females, and among Latinos. 相似文献
133.
This study uses empirical spatial theory to evaluate candidate and voter behavior in senate elections contested during the 1989 Chilean general election. The study evaluates whether senatorial candidates competing in dual member districts under Chilean d'Hondt locate near the periphery or interior of the electoral space. Spatial analyses demonstrate the Chilean senatorial electoral system is characterized by centrifugal forces. In particular, candidates of the right locate on the periphery of the space and face few incentives to pursue moderate electoral strategies. The study also characterizes bases of party and candidate support and the underlying dimensions of political competition. Spatial analysis reveals both change and continuity in the pre- and post-authoritarian electoral universes. 相似文献
134.
This note evaluates relative ability of the proximity and recently proposed directional variants of the spatial model of voter choice to account for candidate evaluations in US presidential elections contested between 1980 and 1992. I do this by estimating a statistical model that represents voter preference for a candidate as a weighted average of proximity and directional components. The analysis corroborates previous studies supporting the directional model, but illustrate that these results are sensitive to statistical specification. Alternative methodological specifications favor a mixed directional-proximity model and the traditional distance representation. 相似文献
135.
136.
Explaining differences in productive efficiency: An application to Belgian municipalities 总被引:3,自引:0,他引:3
The purpose of this paper is to measure and explain variations in productive efficiency of municipal governments in Belgium. Technical efficiency is evaluated using a non-parametric method based on the Free Disposal Hull (FDH) reference technology. We first calculate input, output, and graph Farrell efficiency measures for a cross-section of all 589 Belgian municipalities. In a second stage of the analysis we explain the calculated differences in efficiency in terms of variables related to the structural characteristics of municipalities and to the institutional environment. 相似文献
137.
138.
Stephen K. Wegren 《The Journal of peasant studies》2013,40(3):390-423
In the post-Soviet economic environment, new opportunities arose attendant with market reform. Rural households had to choose whether to continue past behaviors – to subsist – or to adapt, the latter requiring a degree of risk. This paper analyzes risk-averse and risk-taking households by addressing three main questions: (a) which households are risk-averse and which are risk-takers?; (b) what are the characteristics of those different types of households?; and (c) which factors have greatest causal properties in explaining household risk-taking? Typologies of risk-averse and risk-taking households are presented. Using survey data, statistical analysis disaggregates peasant households, showing that households with higher total income are more likely to take on risk. Land expansion is important mainly for commercially oriented households. 相似文献
139.
The relationship between subjective invulnerability and optimism bias in risk appraisal, and their comparative association
with indices of risk activity, substance use and college adjustment problems was assessed in a sample of 350 (M
age = 20.17; 73% female; 93% White/European American) emerging adults. Subjective invulnerability was measured with the newly
devised adolescent invulnerability scale (AIS). Optimism bias in decision-making was assessed with a standard comparative-conditional
risk appraisal task. Results showed that the danger- and psychological invulnerability subscales of the AIS demonstrated strong
internal consistency and evidence of predictive validity. Subjective invulnerability and optimism bias were also shown to
be empirically distinct constructs with differential ability to predict risk and adjustment. Danger invulnerability and psychological
invulnerability were more pervasively associated with risk behavior than was optimism bias; and psychological invulnerability
counter-indicated depression, self-esteem and interpersonal problems. Results support recent claims regarding the “two faces”
of adolescent invulnerability. Implications for future research are drawn. 相似文献
140.