全文获取类型
收费全文 | 11619篇 |
免费 | 1244篇 |
专业分类
各国政治 | 408篇 |
工人农民 | 376篇 |
世界政治 | 839篇 |
外交国际关系 | 282篇 |
法律 | 8989篇 |
中国共产党 | 1篇 |
中国政治 | 82篇 |
政治理论 | 1813篇 |
综合类 | 73篇 |
出版年
2020年 | 338篇 |
2019年 | 340篇 |
2018年 | 385篇 |
2017年 | 446篇 |
2016年 | 460篇 |
2015年 | 427篇 |
2014年 | 417篇 |
2013年 | 1165篇 |
2012年 | 268篇 |
2011年 | 358篇 |
2010年 | 531篇 |
2009年 | 484篇 |
2008年 | 275篇 |
2007年 | 246篇 |
2006年 | 355篇 |
2005年 | 240篇 |
2004年 | 228篇 |
2003年 | 223篇 |
2002年 | 201篇 |
2001年 | 439篇 |
2000年 | 345篇 |
1999年 | 296篇 |
1998年 | 143篇 |
1997年 | 128篇 |
1996年 | 103篇 |
1995年 | 131篇 |
1994年 | 141篇 |
1993年 | 115篇 |
1992年 | 216篇 |
1991年 | 237篇 |
1990年 | 217篇 |
1989年 | 230篇 |
1988年 | 208篇 |
1987年 | 178篇 |
1986年 | 207篇 |
1985年 | 225篇 |
1984年 | 220篇 |
1983年 | 185篇 |
1982年 | 147篇 |
1981年 | 131篇 |
1980年 | 131篇 |
1979年 | 150篇 |
1978年 | 92篇 |
1977年 | 79篇 |
1976年 | 67篇 |
1975年 | 71篇 |
1974年 | 77篇 |
1973年 | 64篇 |
1972年 | 55篇 |
1971年 | 57篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
321.
Do state supreme courts act impartially or are they swayed by public opinion? Do judicial elections influence judge behavior? To date these questions have received little direct attention due to the absence of comparable public opinion data in states and obstacles to collecting data necessary for comprehensive analysis of state supreme court outcomes. Advances in measurement, data archiving, and methodology now allow for consideration of the link between public opinion and judicial outcomes in the American states. The analysis presented considers public opinion's influence on the composition of courts (indirect effects) and its influence on judge votes in capital punishment cases (direct effects). In elective state supreme courts, public support for capital punishment influences the ideological composition of those courts and judge willingness to uphold death sentences. Notably, public support for capital punishment has no measurable effect on nonelective state supreme courts. On the highly salient issue of the death penalty, mass opinion and the institution of electing judges systematically influence court composition and judge behavior. 相似文献
322.
Thomas D. Cook William R. Shadish Vivian C. Wong 《Journal of policy analysis and management》2008,27(4):724-750
This paper analyzes 12 recent within‐study comparisons contrasting causal estimates from a randomized experiment with those from an observational study sharing the same treatment group. The aim is to test whether different causal estimates result when a counterfactual group is formed, either with or without random assignment, and when statistical adjustments for selection are made in the group from which random assignment is absent. We identify three studies comparing experiments and regression‐discontinuity (RD) studies. They produce quite comparable causal estimates at points around the RD cutoff. We identify three other studies where the quasi‐experiment involves careful intact group matching on the pretest. Despite the logical possibility of hidden bias in this instance, all three cases also reproduce their experimental estimates, especially if the match is geographically local. We then identify two studies where the treatment and nonrandomized comparison groups manifestly differ at pretest but where the selection process into treatment is completely or very plausibly known. Here too, experimental results are recreated. Two of the remaining studies result in correspondent experimental and nonexperimental results under some circumstances but not others, while two others produce different experimental and nonexperimental estimates, though in each case the observational study was poorly designed and analyzed. Such evidence is more promising than what was achieved in past within‐study comparisons, most involving job training. Reasons for this difference are discussed. © 2008 by the Association for Public Policy Analysis and Management. 相似文献
323.
324.
Democratization reduces the risk of war, but uneven transitions toward democracy can increase the probability of war. Using country-level data on democratization and international war from the period 1875–1996, we develop a general additive statistical model reassessing this claim in light of temporal and spatial dependence. We also develop a new geopolitical database of contiguities and demonstrate new statistical techniques for probing the extent of spatial clustering and its impact on the relationship between democratization and war. Our findings reaffirm that democratization generally does reduce the risk of war, but that large swings back and forth between democracy and autocracy can increase war proneness. We show that the historical context of peace diminishes the risk of war, while a regional context plagued by conflict greatly magnifies it. 相似文献
325.
326.
Quan D. Mai 《Labor History》2016,57(2):141-169
The period that spanned the Gilded Age to the onset of the Great Depression saw the rise and relative decline of the US labor movement. The salient events of labor movements over these years undoubtedly shaped public perception about labor issues, and some scholars have been attempting to unpack the mechanisms through which depictions and characterizations of the ‘labor problem’ were produced in authoritative venues that could have shaped the future of the movement. This study goes beyond the standard practice of explaining news report volume to feature the political valance of the reports on the labor problem over a 63-year time period. The aforementioned period also saw significant changes in news reporting practices, with the rise of objective informational writing and the embrace of journalism as a profession. The change within journalism itself could potentially shape the depiction of the labor problem, yet such change has been overlooked by existing literature pertaining to the topic. This research makes a theoretical case for integrating social processes central to the labor movement and journalism from 1870 to 1932 and explains patterns in the cultural production of the labor problem in the New York Times by analyzing these two tracks of history in conjunction using both qualitative and quantitative data. 相似文献
327.
328.
329.
330.