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   6392篇
  免费   231篇
各国政治   443篇
工人农民   203篇
世界政治   639篇
外交国际关系   451篇
法律   2710篇
中国政治   50篇
政治理论   2049篇
综合类   78篇
  2023年   44篇
  2022年   29篇
  2021年   54篇
  2020年   109篇
  2019年   159篇
  2018年   177篇
  2017年   203篇
  2016年   209篇
  2015年   119篇
  2014年   176篇
  2013年   1081篇
  2012年   176篇
  2011年   182篇
  2010年   181篇
  2009年   182篇
  2008年   168篇
  2007年   228篇
  2006年   201篇
  2005年   233篇
  2004年   233篇
  2003年   212篇
  2002年   234篇
  2001年   126篇
  2000年   121篇
  1999年   100篇
  1998年   95篇
  1997年   95篇
  1996年   94篇
  1995年   95篇
  1994年   97篇
  1993年   82篇
  1992年   89篇
  1991年   93篇
  1990年   66篇
  1989年   69篇
  1988年   68篇
  1987年   66篇
  1986年   70篇
  1985年   65篇
  1984年   56篇
  1983年   66篇
  1982年   51篇
  1981年   57篇
  1980年   41篇
  1979年   41篇
  1978年   34篇
  1977年   35篇
  1976年   32篇
  1974年   16篇
  1973年   17篇
排序方式: 共有6623条查询结果,搜索用时 31 毫秒
201.
Credit markets are expanding, and with them also the automated, large‐scale commercialization of personal credit data. The increasing use of data and scores for commodified decision making lends greater urgency to the study of credit data regulatory regimes. This article promotes a comparative regulatory governance perspective as the basis for theory‐driven, multidimensional measurement. In order to measure consumer protection, we distinguish three different subregimes (collection, profiling, and use) and construct a two‐dimensional index of consumer protection (market restriction and user empowerment). We then assess the index and demonstrate its applicability and validity, building on empirical analysis of the regulatory regimes in the United States, France, Sweden, and Israel for the year 2019. Our approach points to a new direction in researching and measuring regulatory regimes in a comparative manner, which looks beyond national analysis toward an in‐depth understanding of other, equally important, levels of variation.  相似文献   
202.
Abstract

In this article, we look at the fissures in United Europe from both sides of the region where a post-Cold War ‘Middle/Central Europe’ should have been forged. How do leading German and Polish newspapers treat the categories of ‘Central’ or ‘Middle’ Europe relative to the concept of the Eastern–Western European divide and what are the discourses associated with these perspectives? At the time of a looming redefinition of the entire European project, what can media reports from Germany and Poland tell us about its future? We conclude that the media narratives in these two countries portend further tensions for European unity, since the new divisions now overlap the old ones. Our findings have implications for the future of democracy in the newly democratic countries of Central and Eastern Europe, including Poland.  相似文献   
203.
Volatile organic compounds (VOCs) are by-products of cadaveric decomposition and are responsible for the odor associated with decomposing remains. The direct link between VOC production and individual postmortem microbes has not been well characterized experimentally. The purpose of this study was to profile VOCs released from three postmortem bacterial isolates (Bacillus subtilis, Ignatzschineria indica, I. ureiclastica) using solid-phase microextraction arrow (SPME Arrow) and gas chromatography–mass spectrometry (GC-MS). Species were inoculated in headspace vials on Standard Nutrient Agar and monitored over 5 days at 24°C. Each species exhibited a different VOC profile that included common decomposition VOCs. VOCs exhibited upward or downward temporal trends over time. Ignatzschineria indica produced a large amount of dimethyldisulfide. Other compounds of interest included alcohols, aldehydes, aromatics, and ketones. This provides foundational data to link decomposition odor with specific postmortem microbes to improve understanding of underlying mechanisms for decomposition VOC production.  相似文献   
204.
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   
205.

The aim of this paper is to examine the influence of the right to information laws on sustainability transparency in European local governments. This goal is novel, in that previous studies have examined the effects of various factors on the dissemination of government information (demographic, socioeconomic, political and financial) but not the contribution of legal factors to online transparency on environmental, social and economic sustainability. Our research question is this: Do information laws contribute to transparency on sustainability? Using the Global Reporting Initiative guidelines and a statistical regression analysis, we studied the websites of 106 local governments in ten European countries. The results obtained show that when transparency laws clearly stipulate the rules applicable and the procedures established for appeals, exceptions, refusals and requests, this can favour transparency on environmental, social and economic sustainability. Our findings advance understanding of this field and reinforce the basis for legal reforms to enhance sustainability transparency.

  相似文献   
206.
Negotiation and conflict resolution theorists have classified world cultures according to three types for the purpose of describing and predicting some of the ways in which individuals and groups within broad, geographically based cultural groups behave in conflict and negotiation‐related situations. These three broad categories, called “cultural syndromes,” have described these cultures according to the relative value they place on these three concerns: honor, face, and dignity. Based on our examination of the literature on the cultural dimensions of negotiation and conflict management, our own practice, and an analysis of literature and practice pertaining to the place and utility of the honor, face, interest, and dignity attributes within and between cultural groups , we propose a reformulation of this typology. Our reformulation would replace the broad “dignity” category with a new category that we call “interest,” which we believe better characterizes Northern European and North American cultures. We also argue that a cultural orientation toward dignity is universal and not geographically unique and is thus shared by all three cultures. This new formulation, we believe, more accurately characterizes the global range of orientations toward negotiation and conflict resolution and would, if adopted, help scholars and practitioners better understand culturally divergent conflict orientations and behaviors as well as the ramifications of such differences for negotiation and conflict resolution practice.  相似文献   
207.
Abstract

Now marketed as a tropical beach destination, Okinawa's identity is also forever linked with the horrors of war. Okinawa's tumultuous past encompasses the Ryukyu Islands, which had close economic ties to China until being annexed by mainland Japan, were invaded by the US in the Second World War, were occupied until 1972 and, more recently, have become the centre of heated debates over the continued presence of US military bases. The Battle of Okinawa was one of the bloodiest of the Second World War and the inhabitants faced not only the American invasion but also the tactics of the Japanese army, who viewed the islands as expendable in order to slow invading forces from reaching mainland Japan. In the context of the seventieth anniversary of the end of the Battle of Okinawa in 2015, and beyond, it is argued here that these conflicting geopolitical disputes present significant challenges in terms of the messages presented to educational dark tourists visiting the Okinawa Peace Park and Memorials. The Peace Park Story Tellers or kataribe who are the Second World War survivors, have the critical task of mediating the message to both domestic and international tourists, some of whom are not prepared to hear anti-Japan sentiment. Through an examination of the historical and geographic background, and an analysis of the tourist experience at the Peace Park and Memorials, this paper explores the complexity of educational dark tourism where competing messages collide.  相似文献   
208.

There is strong evidence that chronic, systemic inflammation hastens onset of the diseases of old age that ultimately lead to death. Importantly, several studies suggest that childhood adversity predicts chronic inflammation. Unfortunately, this research has been plagued by retrospective reports of childhood adversity, an absence of controls for adult stressors, and a failure to investigate various competing models of the link between childhood adversity and chronic inflammation. The present study was designed to address these limitations. Using 18 years of data collected from 413 African Americans (58% female) included in the Family and Community Health Study, hierarchical regression analyses provided support for a nuanced early life sensitivity explanation for the link between early adversity and adult chronic inflammation. Controlling for health risk behaviors and adult SES, late childhood (ages 10–12) adversity amplified the association between adult adversity (age 29) and chronic inflammation. This interaction operated in a domain-specific fashion. Harsh parenting amplified the relation between intimate partner hostility and inflammation, whereas early discrimination amplified the relation between adult discrimination and inflammation. These findings suggest that individuals may be primed to respond physiologically to adverse adult circumstances that resemble those experienced earlier in life.

  相似文献   
209.
Journal of Youth and Adolescence - School-based mental health intervention programs have demonstrated efficacy for the prevention and reduction of depressive symptoms, though the effect tends to be...  相似文献   
210.
Following 9/11, Al-Qaeda-orchestrated plots were considered the greatest threat to Western security and sparked the coalition’s war on terror. Close to a decade later, the post-9/11 threat landscape had shifted significantly, leading then CIA-director Leon Panetta to describe “the lone-wolf strategy” as the main threat to the United States. Subsequent lone-actor attacks across the West, including the cities of London, Nice, Berlin, Stockholm, Ottawa and Charleston, further entrenched perspectives of a transformed security landscape in the “after, after-9/11” world. The unique features of lone-actor terrorism, including the challenges of interdiction and potential of copycat attacks, mean that the media is likely to play a particularly important role in shaping the reactions of the public, affected communities and copycat attackers. This article presents findings from a content analysis of British and Danish newspaper reporting of lone-actor terrorism between January 2010 and February 2015. The study highlights that lone-actor terrorism is framed, with national variations, as a significant and increasing problem in both countries; that Islamist lone-actors are often represented as distinct from far-right lone-actors; and that some reporting, despite relatively limited amplification of specific terrorist messages, potentially aids lone-actors by detailing state vulnerabilities to attacks.  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