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   36783篇
  免费   1695篇
  国内免费   5篇
各国政治   1635篇
工人农民   1623篇
世界政治   2510篇
外交国际关系   1256篇
法律   23722篇
中国共产党   11篇
中国政治   270篇
政治理论   7133篇
综合类   323篇
  2021年   188篇
  2020年   632篇
  2019年   720篇
  2018年   933篇
  2017年   1039篇
  2016年   1099篇
  2015年   797篇
  2014年   860篇
  2013年   3799篇
  2012年   982篇
  2011年   1039篇
  2010年   946篇
  2009年   996篇
  2008年   1074篇
  2007年   1078篇
  2006年   1106篇
  2005年   984篇
  2004年   957篇
  2003年   904篇
  2002年   897篇
  2001年   1308篇
  2000年   1168篇
  1999年   956篇
  1998年   543篇
  1997年   409篇
  1996年   447篇
  1995年   417篇
  1994年   416篇
  1993年   435篇
  1992年   669篇
  1991年   715篇
  1990年   684篇
  1989年   636篇
  1988年   675篇
  1987年   635篇
  1986年   704篇
  1985年   653篇
  1984年   554篇
  1983年   530篇
  1982年   408篇
  1981年   396篇
  1980年   305篇
  1979年   448篇
  1978年   289篇
  1977年   242篇
  1976年   215篇
  1975年   257篇
  1974年   277篇
  1973年   228篇
  1972年   213篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.

Competing hypotheses on the relationship between government and dissident behavior emerge from both formal and empirical models. Yet, the current literature lacks a comprehensive theoretical account of such contradictory effects. This study develops a theory to account for a large number of competing hypotheses within a single framework. The theory explains various government and dissident tactical choices over the course of an internal political struggle by focusing on leaders, their motivations, and the link between their motivations and actions. The theory gives rise to a process model of sequential government-dissident interactions that is used to test several implied hypotheses. Empirical sequential time-series models of government and dissident behavior find support for most of the theory's implied hypotheses in Israel (1979–2002) and Afghanistan (1990–99).  相似文献   
994.
The current article seeks to add to the quantitative approach to understanding terrorism by examining the logic underlying terrorist choice of targets and timing within the context of the Chechen–Russian conflict. Using data on Chechen rebel bombings in Chechnya and Russia from 1997–2003, the analysis revealed support for a logic underlying terrorist choice of targets. The results indicated that civilian targets were more likely to be targeted in Russia than in Chechnya, illustrating the importance of examining contextual effects within quantitative approaches to terrorism. The results also implicated an affect of weather and urbanization. Implications of the results and future directions for research are discussed.  相似文献   
995.
996.
Across the world, governments are grappling with the effects of global warming. Rising temperatures, increases in the number of natural disasters, and elevated sea levels are just some of the risks posed by Earth's weakening ozone. And yet solutions exist. This article discusses the contribution of auto emissions to global warming and proposes ways for manufacturers to adopt a single emissions standard across their fleets all over the world. As discussed, adopting a single standard based on the most stringent one available poses advantages for manufacturers and also promises to reduce the threat of global warming.  相似文献   
997.
998.
This study concerns how intraorganizational networks affect the implementation of policies and practices in organizations. In particular, we attend to the role of the informal subgroup or clique in cultivating and distributing locally adapted and integrated knowledge, or know‐how. We develop two hypotheses based on the importance of intraorganizational coordination for an organization's capacity for change. The first emphasizes the importance of distributing know‐how evenly to potential recipient subgroups. The second emphasizes the importance of restricting know‐how to flow from high know‐how subgroups. We test our hypotheses with longitudinal network data in 21 schools, finding stronger support for the second hypothesis than the first. Our findings can help managers cultivate know‐how flows to contribute to organizational change.  相似文献   
999.
ABSTRACT

Assessing the risk for animal cruelty is imperative, yet understudied and problematic due to the sensitivity of the topic. Early prevention is critical, yet very little research examines cruelty when it first appears in childhood. The aim of this study was to explore children’s attitudes towards types of animal cruelty, to investigate potential demographic differences, and to examine potential associations between acceptance of cruelty and cognitive and affective factors that place children ‘at-risk’ for cruelty perpetration. Questionnaire data was collected from 1127 children in schools. The results indicate that cruelty attitudes are predicted by some demographic variables such as urban living, being male, younger age and not having pets, but depend on the type of animal cruelty. Acceptance of cruelty predicted low compassion and low reported humane behaviour towards animals. Acceptance of cruelty was predicted by negative attitudes towards animals, lower beliefs in animal minds and low attachment to pets, signifying the importance of targeting such variables in future prevention programmes. This study is an original contribution to research into childhood animal cruelty in the general population, with implications for designing and implementing early prevention programmes that tackle problematic attitudes to cruelty.  相似文献   
1000.
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