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   1054篇
  免费   85篇
各国政治   79篇
工人农民   44篇
世界政治   89篇
外交国际关系   111篇
法律   451篇
中国政治   4篇
政治理论   360篇
综合类   1篇
  2023年   12篇
  2022年   9篇
  2021年   13篇
  2020年   38篇
  2019年   46篇
  2018年   63篇
  2017年   76篇
  2016年   78篇
  2015年   38篇
  2014年   55篇
  2013年   184篇
  2012年   45篇
  2011年   42篇
  2010年   46篇
  2009年   56篇
  2008年   44篇
  2007年   38篇
  2006年   28篇
  2005年   32篇
  2004年   28篇
  2003年   31篇
  2002年   29篇
  2001年   17篇
  2000年   16篇
  1999年   10篇
  1998年   11篇
  1997年   13篇
  1996年   6篇
  1995年   4篇
  1994年   1篇
  1993年   5篇
  1992年   4篇
  1991年   1篇
  1989年   3篇
  1988年   1篇
  1987年   3篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
  1982年   2篇
  1980年   2篇
  1978年   1篇
  1977年   1篇
  1976年   1篇
  1971年   1篇
  1970年   1篇
  1966年   1篇
排序方式: 共有1139条查询结果,搜索用时 31 毫秒
891.
One of the more recent developments in historiography has been the emergence of 'new imperial history'. The articles within this special edition of the History of the Family offer examples of how some historians have dealt with the histories of both empires and families.  相似文献   
892.
Political Behavior - The original version of this article unfortunately contains the following errors. In the heading “Political Participation and Civic Education”, the text...  相似文献   
893.
The U.S. population is increasingly spreading out, moving to the suburbs, and migrating from the Rust Belt to the Sun Belt. This paper uses recent household‐level data sets to study some of the environmental consequences of population suburbanization. It measures the increase in household driving, home fuel consumption, and land consumption brought about by population dispersion. Suburban households drive 31 percent more than their urban counterparts, and western households drive 35 percent more miles than northeastern households. Despite increased vehicle dependence, local air quality has not been degraded in sprawling areas, thanks to emissions controls. Technological innovation can mitigate the environmental consequences of resource‐intensive suburbanization. © 2000 by the Association for Public Policy Analysis and Management.  相似文献   
894.
The impact of the introduction of EU Single Area Payments (SAPs) on farm expansion strategy in Lithuania is investigated, utilising farm accounting and survey data. The introduction of the SAP has a positive influence on farmers' intentions to expand their area compared to a baseline scenario of the hypothetical continuation of pre-accession policy. The switch in policy has a more pronounced effect on farms that were previously credit constrained. While the SAP has been presented as a support that is decoupled from production, its introduction may have ex post coupled effects, through an income multiplier effect on credit constrained farmers.  相似文献   
895.
Firm informality is pervasive throughout the developing world, Bangladesh being no exception. The informal status of many firms substantially reduces the tax basis and therefore impacts the provision of public goods. The literature on encouraging formalisation has predominantly focused on reducing the direct costs of formalisation and has found negligible impacts of such policies. In this paper, we focus on a stick intervention, which to the best of our knowledge is the first one in a developing country setting that deals with the most direct and dominant form of informality, that is registration with the tax authority with a direct link to the country’s potential revenue base and thus public goods provision. We implement an experiment in which randomly selected firms are visited by tax representatives who deliver an official letter from the Bangladesh National Tax Authority stating that the firm is not registered and the consequential punishment if the firm fails to register. We find that the intervention increases the rate of registration among treated firms, while firms located in the same market but not treated do not seem to respond significantly. We also find that only larger revenue firms at baseline respond to the threat and register. Our findings have at least two important policy implications: i) the enforcement angle, which could be an important tool to encourage formalisation; and ii) targeting of government resources for formalisation to high-end informal firms. The effects are generally small in levels and this leaves open the question of why many firms still do not register.  相似文献   
896.
Aggregate studies find no effect of campaign advertising on voter turnout in the United States, thereby calling into question experimental and survey-based studies that produce strong turnout effects. In revisiting the debate over the impact of campaign ads, this paper examines the effects of both TV campaign advertising and campaign field offices on aggregate voter turnout during the 2008 US presidential election campaign. In contrast to previous studies, our analysis finds that both campaign field offices and campaign advertising help to stimulate turnout, although the effect of campaign field offices is more robust to alternative model specifications. We also find that only Obama's field offices had any discernible impact on aggregate voter turnout, thereby reinforcing the narrative that the Obama campaign had a superior ground game in 2008.  相似文献   
897.
Prominent perspectives in the study of conflict point to two factors that exert substantial influence on public opinion about foreign intervention: (1) news about casualties and (2) signals from partisan elites. Past work is limited, however, in what it can say about how these two factors interact. We present an experiment designed to understand the surprisingly common scenario where elites send competing messages about whether the public should support war or oppose it—and these messages do not coincide with party divisions. We find that partisans are generally insensitive to news about casualties, but they become noticeably more sensitive when they perceive within-party disputes over support for the war. Independents, however, respond to news of casualties irrespective of what messages elites send. These findings shed light on when and how the public responds to competing and unclear cues and speak to the role of public opinion in determining conflict outcomes and democratic foreign policy-making more broadly.  相似文献   
898.
This study examined the relationships among newspaper ad watch coverage, ad tone, and the accuracy of political advertising. A sample of political advertisements (N = 160) was drawn from the Campaign Media Analysis Group (CMAG) database and other sources for eight U.S. Senate races. Two experts on each race evaluated the ads’ accuracy and their ideological portrayals of candidates, while trained coders analyzed other aspects of the ads. Ad watch coverage from these races (ad watch N = 109) also was content-analyzed. The number of ad watches overall in a race and the number that explicitly criticized ads were positively related with the level of accuracy of political ads and with a tendency to portray their favored candidates closer to their actual ideological position—but the overall number of ad watches also was positively related with a tendency for ads to portray opponents as more extreme than their positions warranted. Ad watches usually tend to scrutinize negative ads more, but ad watch coverage in this study was unrelated with ad tone and with the number of negative ads in a race. Positive ads were rated as more accurate but also more prone to exaggerate the supported candidates’ centrism compared to other ads. Normative and practical implications are discussed.
We’re not going to let our campaign be dictated by fact checkers.

Neil Newhouse, pollster for the Mitt Romney 2012 campaign  相似文献   
899.
Despite high profile examples that are highlighted in the popular media, we know little about high-cost prosocial behaviors such as defending and including, and how these behaviors might change over time and vary by individual. Thus, this study explored defending and including behaviors across the transition to adulthood by assessing growth and profiles of these high-cost prosocial behaviors over a four-year time span. In addition the study explored gender, emotional (sympathy), cognitive (personal values), individual (self-esteem), and relational (maternal warmth) factors during adolescence that predicted profiles of defending and including during the transition to adulthood. Participants were 469 individuals (52% female, 70% European American) who participated at four time points (ages 18–21). Growth curve analyses showed that defending and including behaviors decreased slightly across the transition to adulthood and these behaviors tended to vary as a function of the target of the behavior. Latent profile analyses revealed three groups at each age, one with low, one with medium, and one with high levels of defending and including. The discussion focused on the prevalence and change in defending and including behaviors during the transition to adulthood, as well as the variability that exists in high-cost behavioral profiles.  相似文献   
900.
California spent over a billion dollars supporting the construction of subsidized affordable housing in rail-adjacent neighborhoods through its transit-oriented development program. We test whether placing affordable housing close to rail or in jobs-rich communities increases development costs on a per-unit basis. We constructed budget and land-use data for nearly 500 tax credit-financed affordable housing sites which applied for tax credits in the state between 2008 and 2016. Through hedonic cost modeling and spatially lagged regression, we fail to find a significant effect of proximity to rail on development costs. Only by interacting proximity to transit with a project being higher than four stories do our models yield a significant effect of 8% higher total development costs. But in these models, a negative 16% interaction term suggests this cost impact is completely absorbed by developers by building above four stories. Beyond this, we find that only jobs–housing balance correlates significantly with per-unit development costs: as the number of jobs relative to housing within a five-mile radius of a site increases by 1, per-unit development costs increases by a mere 5%, on average.  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