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   1646篇
  免费   506篇
各国政治   379篇
工人农民   50篇
世界政治   212篇
外交国际关系   91篇
法律   715篇
中国政治   35篇
政治理论   637篇
综合类   33篇
  2021年   29篇
  2020年   36篇
  2019年   156篇
  2018年   92篇
  2017年   140篇
  2016年   150篇
  2015年   134篇
  2014年   122篇
  2013年   537篇
  2012年   89篇
  2011年   91篇
  2010年   107篇
  2009年   43篇
  2008年   68篇
  2007年   38篇
  2006年   38篇
  2005年   21篇
  2004年   30篇
  2003年   16篇
  2002年   18篇
  2001年   6篇
  2000年   16篇
  1999年   12篇
  1998年   10篇
  1997年   13篇
  1996年   13篇
  1995年   12篇
  1994年   12篇
  1993年   13篇
  1992年   7篇
  1991年   5篇
  1990年   8篇
  1989年   4篇
  1988年   8篇
  1987年   3篇
  1986年   6篇
  1985年   5篇
  1984年   8篇
  1983年   6篇
  1982年   2篇
  1981年   6篇
  1980年   6篇
  1979年   4篇
  1978年   5篇
  1977年   4篇
  1976年   1篇
  1974年   2篇
排序方式: 共有2152条查询结果,搜索用时 15 毫秒
241.
242.
In this study, the Raman spectra of 21 phenethylamines were obtained using far‐red excitation (785 nm). The distinguishing ability of Raman for phenethylamines, especially for phenethylamine regioisomers and structural analogues, was investigated. Here, the evaluation of a cross section of Raman spectra demonstrated that all types of phenethylamines were distinguishable, even for certain structural analogues with high spectrum similarity. Raman exhibited high distinguishing ability for phenethylamine regioisomers that differ in the substitution position of halogen, methoxy, alkyl, or other substituted groups; as well as for structural analogues containing different groups, such as furanyl, 2,3‐dihydrofuranyl, halogen, and alkyl substituted at the same position. The Raman spectra for homologues with differences in only a methyl group were found to be highly similar; however, their spectra demonstrated small but detectable differences. Four analogue mixtures and 59 seized samples were also analyzed to study the practical use of the Raman method in forensic field. 95% of the seized samples were correctly identified, which significantly validated the ability of Raman method in identifying the correct isomers. Accordingly, this study provides a non‐destructive, high‐throughput and minimal sample preparation technique for the discrimination of phenethylamines.  相似文献   
243.
In this article we present the schools of thought comprising Critical Management Studies (CMS), explore their implications for public administration, and provide an alternate definition of democratic governance. We synthesize and describe the “modern stream,” inspired by the Frankfurt School, and the “postmodern stream,” associated with poststructuralist authors. Despite significant epistemological and ontological differences, these perspectives complement each other and cast new light on democratic governance. We present the respective theories of Foucault and Habermas, explore their implications for public administration, reconcile their views on power as a basis for a normative definition for so‐called good governance, and redefine the concept of “democratic governance.”  相似文献   
244.
This essay analyses how Mexican presidents have interpreted the concepts of drug trafficking and national security and how these particular connotations have redefined national sovereignty and the specific role of the armed forces in protecting this sovereignty. A qualitative technique of discourse analysis is used to examine public speeches by Zedillo (1994–2000), Fox (2000–2006) and Calderón (2006–2012). The conclusions suggest that drug trafficking and US omnipresence are the two main issues that shaped Mexico's national security threats during this period, with qualitatively distinct trajectories.  相似文献   
245.
246.
Refugee and labour immigration have placed the issue of immigrants’ access to welfare benefits high on the political agenda. This article explores how voter preferences for increases in the child benefit change when respondents are reminded about immigrants’ access to benefits. The survey experiment shows that information about newly arrived immigrants’ access to child benefit has only a small impact on support for increasing the child allowance. By contrast, information about labour migrants’ access to benefits for children living in another European Union country has a strong impact, and the observed sensitivity to this cue is not to the same extent confined to respondents who otherwise support welfare dualism.  相似文献   
247.
Recent literature on bureaucratic structure has gone further than studying discretions given to bureaucrats in policy making, and much attention is now paid to understanding how bureaucratic agencies are managed. This article proposes that the way in which executive governments manage their agencies varies according to their constitutional setting and that this relationship is driven by considerations of the executive's governing legitimacy. Inspired by Charles Tilly (1984), the authors compare patterns of agency governance in Hong Kong and Ireland, in particular, configurations of assigned decision‐making autonomies and control mechanisms. This comparison shows that in governing their agencies, the elected government of Ireland's parliamentary democracy pays more attention to input (i.e., democratic) legitimacy, while the executive government of Hong Kong's administrative state favors output (i.e., performance) legitimacy. These different forms of autonomy and control mechanism reflect different constitutional models of how political executives acquire and sustain their governing legitimacy.  相似文献   
248.
Postulating grievance‐based mechanisms, several recent studies show that politically excluded ethnic groups are more likely to experience civil conflict. However, critics argue that endogeneity may undermine this finding since governments' decisions to include or exclude could be motivated by the anticipation of conflict. We counter this threat to inference by articulating a causal pathway that explains ethnic groups' access to power independently of conflict. Focusing on postcolonial states, we exploit differences in colonial empires' strategies of rule to model which ethnic groups were represented in government at the time of independence. This identification strategy allows estimating the exogenous effect of inclusiveness on conflict. We find that previous studies have tended to understate the conflict‐dampening impact of political inclusion. This finding suggests that grievances have been prematurely dismissed from conventional explanations of conflict, and that policy makers should consider conflict resolution methods based on power sharing and group rights.  相似文献   
249.
This study identifies organizational factors that influence corporatate governance and formulation of public relations strategies for public enagement. This study explores intertwined relationships between public relations strategies and organizational factors. A total of 22 qualitative interviews were conducted with a diverse pool of communication consultants. Results show that the two public relations strategies, bridging and buffering, are frequently observed and linked with key factors such as size, organizational culture, environment specificity, and strategic orientation. Implications for future public relations and corporate governance research are discussed. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
250.
Transparency in the extractives sector is widely seen as an important tool for improving accountability and deterring corruption. Yet for those very reasons, it is a puzzle that so many governments in corruption‐prone countries have voluntarily signed up to greater scrutiny in this area by joining the Extractive Industries Transparency Initiative (EITI). We argue that EITI serves as a reputational intermediary, whereby reformers can signal good intentions and international actors can reward achievement. International and domestic actors thus utilize EITI to diffuse the norm of resource transparency and to advance reformist aims in a highly problematic policy area.  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