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   3231篇
  免费   102篇
各国政治   105篇
工人农民   265篇
世界政治   153篇
外交国际关系   125篇
法律   2041篇
中国共产党   1篇
中国政治   64篇
政治理论   566篇
综合类   13篇
  2021年   23篇
  2020年   35篇
  2019年   53篇
  2018年   167篇
  2017年   101篇
  2016年   166篇
  2015年   67篇
  2014年   82篇
  2013年   289篇
  2012年   175篇
  2011年   160篇
  2010年   53篇
  2009年   69篇
  2008年   78篇
  2007年   72篇
  2006年   84篇
  2005年   452篇
  2004年   163篇
  2003年   82篇
  2002年   51篇
  2001年   38篇
  2000年   21篇
  1999年   31篇
  1998年   19篇
  1997年   18篇
  1995年   19篇
  1994年   22篇
  1993年   17篇
  1992年   36篇
  1991年   33篇
  1990年   38篇
  1989年   53篇
  1988年   43篇
  1987年   43篇
  1986年   40篇
  1985年   38篇
  1984年   22篇
  1983年   27篇
  1982年   15篇
  1979年   20篇
  1978年   24篇
  1976年   14篇
  1975年   27篇
  1974年   35篇
  1973年   22篇
  1972年   27篇
  1971年   22篇
  1970年   17篇
  1968年   14篇
  1967年   17篇
排序方式: 共有3333条查询结果,搜索用时 421 毫秒
821.
822.
Through the Clean Development Mechanism (CDM) of the Kyoto Protocol, a developed country actor with a binding emission reduction target can use emission reductions from a project implemented in a developing country to meet this target. At the same time, CDM projects are meant to contribute to sustainable development in the host country, as defined by this country. The CDM is often taken to illustrate a broader contemporary turn in environmental policymaking toward market liberalism, flexibility, and pluralism, where the governance of the CDM involves ??agency beyond the state?? at different political levels and across various jurisdictions. While such an image of the CDM certainly identifies important aspects, it also downplays the ways in which states govern the CDM, not at the international level but at the domestic level through the host country prerogative to define its sustainable development priorities. Early on in the scholarly debate on the CDM, fears were raised about a ??race to the bottom?? with regard to sustainable development requirements on CDM projects. Our research on Chile confirms that hypothesis, with the important addition, that the ??race?? is not simply a structural feature of the CDM, but a deliberate strategy. We argue that Chile has actively chosen to put only marginal emphasis on securing the CDM??s contribution to sustainable development, and instead uses the CDM primarily as a tool to attract foreign investments, treating carbon credits as just another export product.  相似文献   
823.
Climate change has disastrous impacts in the developing world and confronts countries like India with immense challenges. The dilemma of addressing these challenges encourages the appearance of new modes of agency. However, the extent to which new agents are able to address these challenges depends on several factors. The aim of this article is to examine these factors and how they affect the ways in which climate change-related challenges to development are tackled in the case of the Indian wind energy sector. By firstly examining the attributes and capabilities of the different actors and secondly applying a stakeholder network analysis, the article identifies different characteristics that support the effective and efficient deployment of wind energy in one Indian state and hinder it in another.  相似文献   
824.
Derrick Bell’s work challenges the dichotomy that separates legitimate legal reasoning from “mere” fiction through hybrids that play across science fiction, Platonic dialogue, and autobiography. Despite its merits, I argue that Bell’s position reifies and strengthens, rather than deconstructs, structures of tyranny; it maintains the problematic rhetorical construction of United States race relations in terms of the black–white divide, either alienating, or leaving little or no room for other racial groups constructively to revise power and identity. In contrast, bell hooks’, Mari Matsuda’s and Robert Chang’s work, though tentatively sketched, construes current race and gender relations in terms of a chiaroscuro of power, rather than a simple dichotomy.
Caroline Joan (Kay) PicartEmail:
  相似文献   
825.
Representative democracy does not necessarily eliminate political corruption. Existing models explain the survival of rent-taking politicians by ideological divisions in the electorate and/or informational asymmetries. The current paper demonstrate that rent extraction can persist even if voters are fully informed and ideologically homogenous. We show that in such an environment, voters may gain by persistently reelecting a rent-taker that limits his rent extraction. Such an equilibrium occurs when voters and politicians do not discount the future too heavily, and the share of honest candidates is relatively small.  相似文献   
826.
827.

Purpose

This research fulfills a void in offender mobility discourse. Metropolitan socioeconomic and spatial structure, defined in crime pattern theory as the urban backcloth, plays a significant role in shaping travel behavior; and yet, current analysis of offender mobility continues to favor individual characteristics to account for travel range.

Methods

Using a large sample of juveniles, both delinquent and at-risk youth (N = 2,552), this study compared the predictive utility of individual characteristics against indicators of urban backcloth.

Results

Delinquent youth were found to be more sensitive to the environmental conditions exerted by community-level socioeconomic characteristics than their at-risk counterparts. However, two factors—intercity hierarchical structure and motor vehicle access—accounted for travel variability among all youth.

Conclusions

Offending behavior must be examined within the context of a dynamic environmental context formed by the metropolitan socioeconomic and spatial structure. Delinquents constitute an identifiable subgroup of youth.  相似文献   
828.
829.
Methodology is presented for the profiling of fentanyl in seized drugs using ultra high performance liquid chromatography in combination with tandem mass spectrometry (UHPLC-MS/MS). Target analysis was performed for 40 fentanyl processing impurities, several of which are markers for a specific synthetic route (Siegfried or Janssen). For the separation of these solutes, an Acquity BEH C18 1.7 μm particle column (150 mm × 2.1 mm) with a binary 1% formic acid (pH 2.0)/acetonitrile gradient was used. For MS/MS detection, an atmospheric pressure positive electrospray source was employed with selected reaction monitoring (SRM). The coupling of the high separation power of UHPLC with the highly selective and sensitive detection of MS/MS is amenable to the determination of synthetic route and linking of drug seizures. The technology is also applicable to exhibits containing trace levels of fentanyl in the presence of significantly excess amounts of heroin and/or adulterants.  相似文献   
830.
Mixed evidence has been found regarding how locating in a cluster or a park affects firms?? performance. This paper investigates how locating in different types of clusters and parks interacted by firm size or in-house R&D capability affects a firm??s innovation. Empirically testing the research hypotheses by the data of 165 Taiwan??s manufacturing firms in the information and communication technology sector and taking policy-driven parks (e.g., science parks and industrial parks) and spontaneously clusters as examples, we find that in emerging economies, firms with inferior in-house R&D capability gain more innovation benefits by locating in a science park or a spontaneous cluster while smaller firms gain more innovation benefits by locating in an industry park or a spontaneous cluster. Moreover, our findings also suggest that locating in a science park, smaller firms benefit more than larger firms in terms of innovation performance whereas larger firms benefit more than smaller firms in terms of market performance. The findings suggest that in emerging economies, compared to larger firms, smaller firms are less influenced by negative spillover effect when locating in clusters or parks.  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