全文获取类型
收费全文 | 24967篇 |
免费 | 626篇 |
专业分类
各国政治 | 1025篇 |
工人农民 | 1223篇 |
世界政治 | 1919篇 |
外交国际关系 | 872篇 |
法律 | 14742篇 |
中国共产党 | 2篇 |
中国政治 | 109篇 |
政治理论 | 5472篇 |
综合类 | 229篇 |
出版年
2020年 | 273篇 |
2019年 | 335篇 |
2018年 | 780篇 |
2017年 | 834篇 |
2016年 | 793篇 |
2015年 | 388篇 |
2014年 | 429篇 |
2013年 | 2299篇 |
2012年 | 593篇 |
2011年 | 847篇 |
2010年 | 809篇 |
2009年 | 716篇 |
2008年 | 794篇 |
2007年 | 814篇 |
2006年 | 597篇 |
2005年 | 524篇 |
2004年 | 536篇 |
2003年 | 550篇 |
2002年 | 509篇 |
2001年 | 813篇 |
2000年 | 744篇 |
1999年 | 617篇 |
1998年 | 364篇 |
1997年 | 321篇 |
1996年 | 269篇 |
1995年 | 286篇 |
1994年 | 323篇 |
1993年 | 286篇 |
1992年 | 427篇 |
1991年 | 482篇 |
1990年 | 424篇 |
1989年 | 455篇 |
1988年 | 415篇 |
1987年 | 455篇 |
1986年 | 452篇 |
1985年 | 448篇 |
1984年 | 405篇 |
1983年 | 435篇 |
1982年 | 341篇 |
1981年 | 315篇 |
1980年 | 250篇 |
1979年 | 322篇 |
1978年 | 229篇 |
1977年 | 196篇 |
1976年 | 188篇 |
1975年 | 168篇 |
1974年 | 193篇 |
1973年 | 177篇 |
1972年 | 151篇 |
1971年 | 134篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
841.
Multilateral negotiations at the World Trade Organization have stalled. This has contributed to a steep rise in preferential trade agreements (PTAs). At the same time, negotiations for PTAs have not always proven quick and painless: While some treaties are sealed within a few months or days only, other agreements are preceded by protracted bargaining processes in trade and trade-related issue areas. In this article, we provide a theoretical explanation for this empirical variation. More specifically, we argue that PTA negotiations take longer the greater the distance between the prospective partners’ initial bargaining positions. Moreover, we contend that negotiation processes become more protracted the higher the relative ambition of the prospective PTA. Due to the limited links to the domestic political arena in autocracies, we expect this latter effect to play out for groups of democratic bargaining partners only. We test these two hypotheses for 198 preferential trade negotiations using novel measures for bargaining templates and the ambition of PTA clauses. In our two-stage survival models, we find support for our argument. In line with qualitative evidence from recent preferential trade initiatives, our models indicate that services, investment and intellectual property rights are particularly sticky agenda items for democratic leaders at the international bargaining table. 相似文献
842.
Much of contemporary political debate in the United States focuses on the issue of polarization: specifically, its causal antecedents and its consequences for policymaking and political conflict. In this article, we argue that partisan preference polarization—conventionally defined as the difference in the favored policy positions of legislators from the two major parties—is not a sufficient statistic for potential political conflict in national politics . Rather, a well-defined measure of potential conflict must take into account (1) the locations of status quo policies and proposed alternatives; and (2) the shape of underlying utility functions. We propose measures of the likely contentiousness of a given status quo policy and of a proposal to move that policy. We then demonstrate the usefulness of these measures using estimates of utility function and final passage vote parameters on enacted legislation from the 111th US Senate (2009–2011). 相似文献
843.
Scaling methods pioneered by Poole and Rosenthal (Am J Polit Sci 29(2):357–384, 1985) redefined how scholars think about and estimate the ideologies of representatives seated in the US Congress. Those methods also have been used to estimate citizens’ ideologies. Whereas studies evaluating Congress typically use a behavioral measure, roll call votes, to estimate where representatives stand on the left-right ideological spectrum, those of the public most often have relied on survey data of stated, rather than revealed, preferences. However, measures of individuals’ preferences and, accordingly, estimates of their ideal points, may differ in important ways based on how preferences are elicited. In this paper, we elicit the same individuals’ preferences on the same 10 issues using two different methods: standard survey responses measured on a Likert scale and a donation exercise wherein individuals are forced to divide $1.50 between interest groups with diametrically opposed policy preferences. Importantly, expressing extreme views is costless under the former, but not the latter, method. We find that the type of elicitation method used is a significant predictor of individuals’ ideal points, and that the elicitation effect is driven primarily by Democratic respondents. Under the donation method, the ideal points of Democrats in the aggregate shift left, particularly for those Democrats who are politically engaged. In contrast, wealthy Democrats’ ideal points shift to the right. We also document effects for Republicans and Independents and find that overall polarization is similar under both elicitation methods. We conclude with a discussion of our results, and the consequences and tradeoffs of each elicitation method. 相似文献
844.
HESTER M. VAN DE BOVENKAMP MARLEEN DE MUL JULIA G.U. QUARTZ ANNE MARIE J.W.M. WEGGELAAR‐JANSEN ROLAND BAL 《Public administration》2014,92(1):208-223
Since the 1980s, regulated markets and New Public Management have been introduced in the public sector across the world. How they have affected existing governance mechanisms such as self‐regulation and state regulation has remained largely unexplored, however. This article examines the origins and consequences of institutional layering in governing healthcare quality. Dutch health care, where a market‐based system has been introduced, is used as a case study. The results show that this market‐based system did not replace but modified existing institutional arrangements. As a result, hospitals have to deal with the fragmentation of quality demands. Using the concept of institutional layering, this study shows how different arrangements interact. As a consequence, the introduction of a certain policy reform will work out differently in different countries and policy sectors. Our ‘archaeological’ study in this layering can be seen as an example of how such incremental change can be studied in detail. 相似文献
845.
Olli J. Teirilä 《冲突和恐怖主义研究》2014,37(1):18-40
The recent conflict in the Sahel area is another case where the nexus of terrorism and organized crime causes challenges to the international community. Comparing the situation with that of the Andean region brings forth the challenges faced when dealing with this type of conflict: the states’ weak presence in the remote regions, the insurgents’ ability to offer income and “security” to the people, immediate threat to international investments, unresolved political/regional issues, the marriage of convenience of insurgents/terrorists and organized crime, internal divisions of the insurgent groups and also ideologies surviving or suffering after the elimination of their leaders. 相似文献
846.
847.
The dominant paradigm for understanding contemporary Russia holds that Vladimir Putin's tenure in office has been accompanied by a massive influx of former KGB and military personnel – so-called “siloviki” – into positions of power and authority throughout the polity and economy. Claims of extensive elite militarization, however, are largely based on the analyses of only one research program and, moreover, the validity of the estimates produced by that research program is open to question on numerous grounds. In this article, we review existing research on elite militarization in Russia; discuss a series of conceptual and empirical issues that need to be resolved if valid and meaningful estimation of military–security representation is to be achieved; introduce new findings; and evaluate the totality of existing evidence regarding whether the Russian state under Putin deserves to be labeled a militocracy. We find that the most straightforward reading of existing data indicates that the percentage of siloviki in the political elite during Putin's first two terms as president was approximately half of that which has been widely reported in both scholarship and the media, and also declined during the Medvedev presidency. In addition, our analysis of a broader cross section of the elite estimates military–security representation during the Putin presidency to have been lower still. Overall, existing data paint a less alarming picture of the depths to which siloviki have penetrated the corridors of power since 2000 than has been commonly portrayed and thereby cast doubt on Russia's status as an “FSB state.” On the other hand, past trends also provide some basis for expecting that the numbers of siloviki will once again rise during Putin's current presidential term. 相似文献
848.
This study examined community-based clinicians’ (N = 294) attitudes, background/experiences, values, and knowledge relating to issues of co-occurring disorders, which occur at a high rate among adolescents involved in the juvenile justice system. Study results reveal that clinicians self-rate their clinical values and attitudes at or above the expected level of competency, but they concede that their skill and knowledge levels are not adequate. Comparison measures reveal that employment setting conditions, geographic region, hours worked per week, and strongly held convictions about the importance of integrated mental health and substance use disorders service delivery distinguish clinicians’ co-occurring disorders knowledge levels. Implications are offered. 相似文献
849.
Caroline W. Kabiru Donatien Beguy Robert P. Ndugwa Eliya M. Zulu Richard Jessor 《Child & Youth Services》2013,34(1):12-32
Many adolescents living in contexts characterized by adversity achieve positive outcomes. We adopt a protection–risk conceptual framework to examine resilience (academic achievement, civic participation, and avoidance of risk behaviors) among 1,722 never-married 12–19 year olds living in two Kenyan urban slums. We find stronger associations between explanatory factors and resilience among older (15–19 years) than younger (12–14 years) adolescents. Models for prosocial behavior and models for antisocial behavior emerge as key predictors of resilience. Further accumulation of evidence on risk and protective factors is needed to inform interventions to promote positive outcomes among youth situated in an ecology of adversity. 相似文献
850.