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   24911篇
  免费   679篇
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   14739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
  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
951.
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   
952.
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   
953.
954.
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   
955.
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   
956.
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   
957.
958.
Although the relation between family relationships and the timing of sexual debut has been the focus of many studies, research on mediating factors is scarce. This study examines whether low levels of family cohesion result in an earlier onset of romantic and sexual experiences, and whether the link between family cohesion and an early sexual debut is mediated by early romantic initiation. A longitudinal sample of 314 adolescent girls and 222 boys, aged 12–17 at Wave 1, completed questionnaires at three measurement points with three year intervals. The results showed that sexual debut followed romantic initiation for 77% of the participants. For early adolescent females (aged 12–14), high levels of family cohesion resulted in a later sexual debut and this association was fully mediated by a delay of romantic initiation. Among boys and older girls, timing of romantic initiation did not mediate the link between family cohesion and timing of sexual initiation. Early adolescent girls who have negative relationships with their parents turn to romantic relationships for intimacy and support, which subsequently provide the opportunity for an early sexual debut. Low levels of family cohesion thus primarily precipitate romantic initiation and sexual initiation appears to be secondary to this process among girls in this age group.  相似文献   
959.
Previous studies have indicated homophily in depressive symptoms among adolescent friends, resulting from both peer selection and socialization processes. However, developmental differences and the role of school transitions in these processes have not been elucidated. A sample of 367 (51% female) adolescents was followed from 6th to 11th grade to investigate prospective relationships between adolescents’ and their friends’ depressive symptoms in middle school and in high school. Results revealed that students selected friends with similar levels of depressive symptoms after each school transition. Additionally, friends appeared to socialize adolescents to become more similar in depressive affect in late middle school years. These findings suggest normative selection effects after school transitions, followed by socialization effects in middle school, but not high school.  相似文献   
960.
Understanding the prevalence and correlates of decisional autonomy within specific cultural contexts is necessary to fully comprehend how family processes are embedded within culture. The goals of this study were to describe mothers’ and fathers’ decision-making with adolescents (M = 12.51 years, SD = 0.58; 51% female), including parent-unilateral, joint, and youth-unilateral decision-making, and to examine the socio-cultural and family characteristics associated with these different types of decision-making in 246 Mexican-origin families. Mothers reported more joint and youth-unilateral decision-making and less parent-unilateral decision-making than did fathers. Fathers reported more youth-unilateral decision-making with sons than with daughters. Further, for mothers, more traditional gender role attitudes and higher levels of mother-adolescent conflict were associated with more parent-unilateral and less joint decision-making. In contrast, for fathers, lower levels of respect values were associated with more youth-unilateral decision-making with sons, and higher levels of parent-adolescent warmth were associated with more youth-unilateral decision-making with daughters. The importance of understanding the different correlates of mothers’ and fathers’ decision-making with sons versus daughters is discussed.  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