全文获取类型
收费全文 | 6402篇 |
免费 | 230篇 |
专业分类
各国政治 | 532篇 |
工人农民 | 191篇 |
世界政治 | 629篇 |
外交国际关系 | 452篇 |
法律 | 2652篇 |
中国政治 | 50篇 |
政治理论 | 2054篇 |
综合类 | 72篇 |
出版年
2023年 | 42篇 |
2022年 | 28篇 |
2021年 | 55篇 |
2020年 | 103篇 |
2019年 | 158篇 |
2018年 | 172篇 |
2017年 | 202篇 |
2016年 | 213篇 |
2015年 | 123篇 |
2014年 | 174篇 |
2013年 | 1170篇 |
2012年 | 174篇 |
2011年 | 178篇 |
2010年 | 175篇 |
2009年 | 182篇 |
2008年 | 159篇 |
2007年 | 223篇 |
2006年 | 190篇 |
2005年 | 226篇 |
2004年 | 235篇 |
2003年 | 211篇 |
2002年 | 225篇 |
2001年 | 123篇 |
2000年 | 117篇 |
1999年 | 100篇 |
1998年 | 96篇 |
1997年 | 93篇 |
1996年 | 91篇 |
1995年 | 92篇 |
1994年 | 97篇 |
1993年 | 80篇 |
1992年 | 86篇 |
1991年 | 94篇 |
1990年 | 64篇 |
1989年 | 67篇 |
1988年 | 65篇 |
1987年 | 64篇 |
1986年 | 71篇 |
1985年 | 63篇 |
1984年 | 55篇 |
1983年 | 66篇 |
1982年 | 51篇 |
1981年 | 57篇 |
1980年 | 39篇 |
1979年 | 39篇 |
1978年 | 33篇 |
1977年 | 33篇 |
1976年 | 30篇 |
1974年 | 18篇 |
1967年 | 17篇 |
排序方式: 共有6632条查询结果,搜索用时 15 毫秒
131.
132.
133.
René W. Aubourg David H. Good Kerry Krutilla 《Journal of policy analysis and management》2008,27(1):7-19
The environmental Kuznets curve (EKC) hypothesis conjectures a nonlinear relationship between pollution and economic growth, such that pollution per capita initially increases as countries economically develop, but then reaches a maximum point before ultimately declining. Much of the EKC literature has focused on testing this basic hypothesis and, in studies that find evidence of an EKC, estimating the “turning point” level of development at which the per capita pollution‐growth relationship changes sign. This approach has not emphasized the policy relevance of specification issues or the potential role of policy variables. This research explores a modified EKC specification which conditions the pollution‐growth relationship on a country's level of debt and degree of democratization. These variables turn out to be significant, implying that different political and economic contexts can shift EKCs and their turning points. These findings suggest that policies to relieve debt burdens and institute political reform, in addition to their usual justifications, also could be used as a strategy to reduce carbon emissions from developing countries. © 2008 by the Association for Public Policy Analysis and Management. 相似文献
134.
David Palmer 《Australian Journal of Public Administration》2008,67(3):307-320
Drawing on interviews with former political leaders and senior public servants, this article maps the values that have guided asylum policy decisions over the past three decades. The findings support the view that a culture of control permeates policy decisions, but pushing deeper, that policy‐maker perceptions of asylum issues are shaped by two primary values: nation building and good governance. Values that tend to preoccupy policy critics, for example human rights, compassion, international legal obligations and national character, are by no means absent, but are subsumed within and harnessed to the desire to be a good engineer and responsible governor. The study adds to the insights required for constructive dialogue between governments and refugee advocates, and affords a comprehensive framework within which asylum policy can be understood and analysed. 相似文献
135.
David J. Webber 《政策研究评论》2008,25(4):313-332
Earth Day 1970's legacy overshadows two earlier events resulting in popular misconceptions about U.S. environmental politics: that environmental policy began with Earth Day and that Congress and the president were not concerned with the environment until public opinion and interest groups pressured them. These misconceptions increase public opinion ambivalence and frustrate environmental leaders. This paper describes Earth Day 1970, the congressionally established Outdoor Recreation Resources Review Commission established in 1958, and President Kennedy's Natural Resources Tour of September 1963, arguing the latter two prepared for the convergence of multiple streams of policy change that resulted in the first Earth Day. 相似文献
136.
137.
138.
David Scott 《Asia-Pacific Review》2012,19(2):85-109
This article argues three things. First, it argues that at the conceptual level there has been a strategic rediscovery of a maritime regional framework, the Indo-Pacific. Second, it argues that at the policy level there is a significant regional security convergence, a degree of strategic balancing, between India and the United States in this Indo-Pacific. Third, it argues that at the causal level there is a common maritime challenge from China faced by India in the Indian Ocean and by the United States in the Pacific Ocean, a common Indo-Pacific strategic challenge which is generating this significant US-India naval convergence. In order to deal with such matters, the article looks at the strategic discourse employed around the concept of the Indo-Pacific, and the related maritime assets deployed in the Indo-Pacific by the United States and India. 相似文献
139.
Yi‐Hong Liao BS Jae‐Sang Hyun PhD Michael Feller MS Tyler Bell PhD Ian Bortins BS James Wolfe MS David Baldwin PhD Song Zhang PhD 《Journal of forensic sciences》2021,66(1):112-128
The forensic science community raised the need for improved evidence recognition, collection, and visualization analytical instrumentation for field and laboratory use. While the 3D optical techniques for imaging static objects have been extensively studied, there is still a major gap between current knowledge and collecting high‐quality footwear and tire impression evidence. Among optical means for 3D imaging, digital fringe projection (DFP) techniques reconstruct 3D shape from phase information, achieving camera‐pixel spatial resolution. This paper presents a high‐resolution 3D imaging technology using DFP techniques dedicated to footwear and tire impression capture. We developed fully automated software algorithms and a graphical user interface (GUI) that allow anyone without training to operate for high‐quality 3D data capture. We performed accuracy evaluations and comparisons comparing with the commercial high‐end 3D scanner and carried out qualitative tests for various impressions comparing with the current practices. Overall, our technology achieves similar levels of accuracy and resolution with a high‐end commercially available 3D scanner, while having the merits of being (1) more affordable; (2) much easier to operate; and (3) more robust. Compared with the current practice of casting, our technology demonstrates its superiority because it (1) is non‐destructive; (2) collects more evidence detail than casts, especially when an impression is fragile; (3) requires less time and money to collect each piece of evidence; and (4) results in a digital file that can easily be shared with other examiners. 相似文献
140.
ABSTRACTThis article argues for the analysis of the flow of ideological discourse through society within and across three distinct but interrelated levels: (1) the canonically defined, or macro level, (2) the intermediate or meso level of competitive political appeals, political relevant public discourse and cultural criticism, and (3) the everyday or micro level of conceptual use by non-experts. This differentiation among levels of ideological action and influence helps us to clarify the objects and appropriate methods of ideological analysis. Methods applied in specific cases must facilitate an effective focus on phenomena on one of these levels while still allowing recognition of the complex forms of direct and indirect conceptual influence and connection between the levels. The article also serves as an introduction to the volume, giving a brief account of the analysis and argument of each contribution. 相似文献