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   4012篇
  免费   629篇
各国政治   603篇
工人农民   189篇
世界政治   512篇
外交国际关系   272篇
法律   1916篇
中国共产党   1篇
中国政治   101篇
政治理论   1004篇
综合类   43篇
  2023年   34篇
  2022年   23篇
  2021年   81篇
  2020年   123篇
  2019年   254篇
  2018年   242篇
  2017年   290篇
  2016年   283篇
  2015年   223篇
  2014年   236篇
  2013年   871篇
  2012年   210篇
  2011年   220篇
  2010年   167篇
  2009年   89篇
  2008年   162篇
  2007年   111篇
  2006年   108篇
  2005年   95篇
  2004年   119篇
  2003年   81篇
  2002年   78篇
  2001年   57篇
  2000年   66篇
  1999年   34篇
  1998年   21篇
  1997年   31篇
  1996年   20篇
  1995年   19篇
  1994年   25篇
  1993年   24篇
  1992年   16篇
  1991年   18篇
  1990年   17篇
  1989年   13篇
  1988年   20篇
  1987年   12篇
  1986年   9篇
  1985年   12篇
  1984年   11篇
  1983年   10篇
  1982年   8篇
  1981年   8篇
  1980年   11篇
  1979年   11篇
  1978年   11篇
  1977年   7篇
  1973年   8篇
  1971年   7篇
  1967年   7篇
排序方式: 共有4641条查询结果,搜索用时 15 毫秒
111.
Individuals are the single largest source of campaign contributions, yet we know little about their motivations. For instance, the existing literature questions whether individual contributors sophisticatedly differentiate among candidates according to policy positions, particularly among same‐party candidates. We analyze this issue by combining data from a new survey of over 2,800 in‐ and out‐of‐state donors associated with the 2012 Senate elections, FEC data on contributors’ professions, and legislative records. Three major findings emerge. First, policy agreement between a donor's positions and a senator's roll calls significantly influences the likelihood of giving, even for same‐party contributors. Second, there is a significant effect of committee membership corresponding to a donor's occupation; this holds even for donors who claim that other motivations dominate, but it does not appear to be motivated by an expectation of access. Third, conditional upon a donation occurring, its size is determined by factors outside a legislator's control.  相似文献   
112.
We evaluate changes in elementary school children health outcomes following the introduction of California's Paid Family Leave (PFL) program, which provided parents with paid time off following the birth of a child. Our health outcomes—overweight, ADHD, and hearing‐related problems—are characterized by diagnosis rates that only pick up during early elementary school. Moreover, our health outcomes have been found to be negatively linked with many potential implications of extended maternity leave—increased breastfeeding, prompt medical checkups at infancy, reduced prenatal stress, and reduced non‐parental care during infancy. Using the Early Childhood Longitudinal Studies (ECLS) within a difference‐in‐differences framework, our results suggest improvements in health outcomes among California elementary school children following PFL's introduction. Furthermore, the improvements are driven by children from less advantaged backgrounds, which is consistent with the notion that California's PFL had the greatest effect on leave‐taking duration after childbirth mostly for less advantaged mothers who previously could not afford to take unpaid leave.  相似文献   
113.
114.
To examine the infant health impact of prenatal exposure to power plant emissions, we draw scientific evidence on the impacted region downwind of a large polluter, a coal‐fired power plant located on the border of two states and proven to be the sole contributor to the violation of air quality standards of the impacted region. Our results show that among all live singleton births that occurred during 1990 through 2006, those born to mothers living as far as 20 to 30 miles away downwind from the power plant (which is also an affluent region) during pregnancy are at greater risks of low birth weight (LBW) and very low birth weight (VLBW): the likelihoods of LBW and VLBW could increase approximately by 6.50 and 17.12 percent, respectively. In light of the continual efforts of The U.S. Environmental Protection Agency in reducing cross‐state air pollution caused by transboundary power plant emissions, our study is aimed at broadening the scope of cross‐border pollution impact analysis by taking into account adverse infant health effects of upwind polluters, which can impose disproportionate burdens of health risks on downwind states due to air pollutants transported by wind.  相似文献   
115.
Responding to recent articles in Governance highlighting the need for improved measurement of bureaucratic characteristics, this article describes efforts to map Brazil's federal agencies on three dimensions—capacity, autonomy, and partisan dominance—derived from data on more than 326,000 civil servants. The article provides a “proof of concept” about the utility of agency‐level measures of these variables, demonstrating how they relate to an output common to all agencies: corruption. The article provides a first step in the direction of building a comparative research program that offers objective evaluation of bureaucracies within nation‐states, with the intent of better disentangling their impact on governance outcomes.  相似文献   
116.
117.
U.S. immigration control is typically understood in terms of enforcement practices undertaken by federal officers guided by legislation and court decisions. While legislation and court opinions are important components of the immigration control apparatus, they do not adequately account for immigration control ‘on the ground.’ To explore this problem, we advance the concept of paralegality, the practices and operations that constitute a dynamic system of actions and relationships that are not simply linear applications of legislation or judicial decisions but may in fact extend or counter these texts. We illustrate the importance of paralegality by reconstructing the evolution of the §287(g) and Secure Communities programs, both of which have shape-shifted dramatically since their inception. Our account of immigration control highlights the problem practice poses for law, proposes a theoretical alternative to textual-law-centric research on immigration and law enforcement, and contributes to scholarship on everyday citizenship.  相似文献   
118.
Local public administration contributes to a favorable business environment. Slovak Trade Licensing Administration (TLA) provides public services for traders. Centrally managed policy making without taking into account of local and regional specifics is not fully conforming to the current local needs of territorial units. Innovative administrative interventions from the central tier may reflect territorial needs of these units. Spatial distribution of performance data points out regional differences in the territorial units of the TLA. There are significant regional differences in the numbers of trades per employees and performed administrative actions. It creates conditions for individual approach in policy making. Cluster analysis groups the territorial units of the TLA for suitable tailor‐made policy making from the central tier. Based on the findings, there are seven clusters of territorial units with specific local and regional needs. Tailor‐made policy making can take into account of territorial specifics and strengthening the role of territorial units of the TLA in regional development.  相似文献   
119.
Drawing on institutional theory, this article articulates qualitative insights from a program of research on Canadian health technology‐based ventures to examine the rules that characterize economic policy, capital investment, and regulatory approval as well as the way these institutions enable and constrain the development of ventures at an early stage. Our findings clarify how economic policy integrates these ventures into the entrepreneurial domain, how capital investment configures them for economic value extraction, and how regulatory approval fully releases their market value. These findings help to revisit current policy modernization initiatives by calling attention to the convergence among the three institutions. Rather than operating solely as a source of constraints, these institutions provide a highly integrated market‐oriented space for health technology‐based entrepreneurial activities to unfold.  相似文献   
120.
This article contributes to the growing discourse on the potential of e‐government to transform the operations of public sector institutions, thereby improving public services. It does so by conceptualizing public service quality into efficiency, economy (cost reduction), customer satisfaction, and service accessibility and draws on qualitative data from the Ghanaian narrative for illustration. As previous studies have demonstrated, this study also affirms the potential of e‐government in improving public services delivery by increasing efficiency, reducing the cost of operations, expanding access to services, and achieving customer satisfaction. Yet, there remains a repertoire of challenges such as weak ICT infrastructure especially in towns and villages, incessant power outages and illiteracy, which are drawbacks to fully harnessing the benefits of e‐government in Ghana. The study recommends that these challenges should feature prominently in e‐government policies to increase the chances of solving them.  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