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   1031篇
  免费   27篇
各国政治   67篇
工人农民   44篇
世界政治   103篇
外交国际关系   56篇
法律   456篇
中国政治   9篇
政治理论   288篇
综合类   35篇
  2023年   11篇
  2022年   6篇
  2021年   10篇
  2020年   17篇
  2019年   14篇
  2018年   23篇
  2017年   36篇
  2016年   21篇
  2015年   25篇
  2014年   27篇
  2013年   172篇
  2012年   22篇
  2011年   41篇
  2010年   22篇
  2009年   27篇
  2008年   41篇
  2007年   41篇
  2006年   36篇
  2005年   39篇
  2004年   36篇
  2003年   23篇
  2002年   24篇
  2001年   26篇
  2000年   23篇
  1999年   17篇
  1998年   20篇
  1997年   11篇
  1996年   13篇
  1995年   15篇
  1994年   16篇
  1993年   16篇
  1992年   10篇
  1991年   16篇
  1990年   16篇
  1989年   12篇
  1988年   9篇
  1987年   7篇
  1986年   7篇
  1985年   17篇
  1984年   7篇
  1983年   17篇
  1982年   9篇
  1981年   12篇
  1978年   10篇
  1977年   5篇
  1976年   5篇
  1973年   3篇
  1972年   5篇
  1971年   4篇
  1969年   6篇
排序方式: 共有1058条查询结果,搜索用时 0 毫秒
31.
This study presents a number of pseudo-operational trials on plastic bags investigating the double- and co-fuming process of a one-step fluorescent cyanoacrylate (LumicyanoTM) in comparisons with the two-step process with basic yellow 40 (BY40) staining for the detection of latent fingermarks. The results demonstrate that both Lumicyano solution and dye contribute to the increased detection of latent fingermarks during the double-fuming process (trial 1). Co-fuming the Lumicyano solution and dye separately (at a concentration of 8%) but simultaneously was less effective than 8% Lumicyano (trial 2). Co-fuming Lumicyano 8% and an additional 8% Lumicyano dye by weight was more effective than Lumicyano 8% (trial 3), possibly due to increased fluorescent material deposition during co-fuming allowing for better visualization. The use of BY40 after Lumicyano resulted in a considerable increase in detected fingermarks.  相似文献   
32.
Objectives

While block randomized designs have become more common in place-based policing studies, there has been relatively little discussion of the assumptions employed and their implications for statistical analysis. Our paper seeks to illustrate these assumptions, and controversy regarding statistical approaches, in the context of one of the first block randomized studies in criminal justice—the Jersey City Drug Market Analysis Project (DMAP).

Methods

Using DMAP data, we show that there are multiple approaches that can be used in analyzing block randomized designs, and that those approaches will yield differing estimates of statistical significance. We develop outcomes using both models with and without interaction, and utilizing both Type I and Type III sums-of-squares approaches. We also examine the impacts of using randomization inference, an approach for estimating p values not based on approximations using normal distribution theory, to adjust for possible small N biases in estimating standard errors.

Results

The assumptions used for identifying the analytic approach produce a comparatively wide range of p values for the main DMAP program impacts on hot spots. Nonetheless, the overall conclusions drawn from our re-analysis remain consistent with the original analyses, albeit with more caution. Results were similar to the original analyses under different specifications supporting the identification of diffusion of benefits effects to nearby areas.

Conclusions

The major contribution of our article is to clarify statistical modeling in unbalanced block randomized studies. The introduction of blocking adds complexity to the models that are estimated, and care must be taken when including interaction effects in models, whether they are ANOVA models or regression models. Researchers need to recognize this complexity and provide transparent and alternative estimates of study outcomes.

  相似文献   
33.
This essay investigates the political economy of sexuality through an interpretation of sex shows for foreigners in Bangkok, Thailand. Reading these performances as both symptoms of, and analytical commentaries on, Western consumer desire, the essay suggests the ‘pussy shows’ parody the mass production that was a hallmark of Western masculine identity under Fordism. This reading makes a case for the erotic generativity of capitalism, illuminating how Western, post-Fordist political economy of the post-1970s generated demand for these erotic services in Asia and how Western, heterosexual masculine desire is integrated into global capitalist circuits.  相似文献   
34.
It is widely recognized that interest groups affect both microeconomic and macroeconomic outcomes. However, few researchers have attempted to discern empirically the factors that contribute to interest group activity. This paper provides a test of several theories of group formation in a panel setting. A nation’s stability, socioeconomic development, political system, size, and diversity all appear to contribute to interest group formation, as predicted by theory.  相似文献   
35.
36.
37.
Whittington  Keith E. 《Publius》1996,26(2):1-24
The requirements of the U.S. Constitution are often assumedto be either clear or defined by the judiciary through interpretation,or both. Examination of the nullification crisis of 1833 indicatesthat this view of the U.S. Constitution is misleading. The nullificationcrisis provoked three competing visions of the appropriate understandingof federalism in the context of textual ambiguity and judicialactivity. The subsequent development of federalism was determinedby that political conflict and compromise. The nullificationcontroversy provides an important example of the openness ofconstitutional norms, the significance of political debate inthe shaping of constitutional meaning, and the complexity ofantebellum political thought.  相似文献   
38.
In recent yems, rapid growth hm occurred in both the number and diversity of university-industry progrmns in the United States. While little comprehensive assessment of these programs exists to date, this paper argues that a systematic empirical analysis of a cmpany's perception of universities as knowledge sources is critical toa clear understanding of the newallknces between industry and academia. From a survey of216 companies, a pattern emerges where the sources of technical knowledge perceived as important by industry are complex and highly interrelated, and they also vary according to the characteristics of companies, especially size. It is seen that university research rather than universities as institutions per se are critical ingredients to the development of new products and production processes.  相似文献   
39.
40.
This paper explores the political background to, the reasons behind, and the stages through which Mao Zedong reversed the position of the Resolution of the 8th Party Congress of 1956 on the issue of the major domestic contradiction in China. Relying on recently published Chinese sources, both primary and secondary, the paper argues that Mao arrived at his position, in which the primacy of class struggle was once again asserted, principally as a result of his negative assessment of the criticism leveled against the CCP in the Party rectification of May 1957, but in an ambivalent and diffident frame of mind, and one highly sensitive to the question of theoretical orthodoxy. Mao's reversal on this crucial issue both confused his colleagues in the CCP CC and aroused strong arguments within that body.  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