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   2741篇
  免费   98篇
各国政治   171篇
工人农民   88篇
世界政治   250篇
外交国际关系   168篇
法律   1168篇
中国政治   20篇
政治理论   950篇
综合类   24篇
  2023年   17篇
  2020年   39篇
  2019年   41篇
  2018年   69篇
  2017年   77篇
  2016年   82篇
  2015年   55篇
  2014年   60篇
  2013年   451篇
  2012年   46篇
  2011年   65篇
  2010年   63篇
  2009年   67篇
  2008年   81篇
  2007年   64篇
  2006年   83篇
  2005年   75篇
  2004年   86篇
  2003年   75篇
  2002年   70篇
  2001年   58篇
  2000年   44篇
  1999年   45篇
  1998年   56篇
  1997年   40篇
  1996年   34篇
  1995年   59篇
  1994年   49篇
  1993年   49篇
  1992年   36篇
  1991年   38篇
  1990年   42篇
  1989年   46篇
  1988年   43篇
  1987年   42篇
  1986年   40篇
  1985年   39篇
  1984年   43篇
  1983年   36篇
  1982年   38篇
  1981年   25篇
  1980年   24篇
  1978年   29篇
  1977年   25篇
  1976年   22篇
  1975年   15篇
  1974年   28篇
  1973年   20篇
  1972年   12篇
  1969年   17篇
排序方式: 共有2839条查询结果,搜索用时 0 毫秒
101.
Research has linked the role of education to delinquency, but much of the focus has been on general population samples and with little attention to demographic differences. Employing a cumulative disadvantage framework that integrates elements of informal social control and labeling theories, this article examines whether academic achievement serves as a positive turning point and re-directs juvenile delinquents away from subsequent offending. Attention is also given to race/sex contingencies. Using a sample of 4,147 delinquents released from Florida correctional institutions (86% male, 57% non-White, average age at release = 16.8 years), propensity score analysis yielded two findings: youth with above average academic achievement while incarcerated were significantly more likely to return to school post-release, and youth with above average attendance in public school were significantly less likely to be re-arrested in the 1-year post-release period. While the academic gains were pronounced among African-American males, the preventive effects of school attendance are similar across race and sex, suggesting that education can be a part of a larger prevention effort that assists juvenile delinquents in successful community re-entry.  相似文献   
102.
103.
This article investigates the mechanisms that voluntary environmental program (VEP) participants adopt to reduce pollution. The focus of this article is the 33/50 program, a VEP introduced by the U.S. Environmental Protection Agency in 1991 and discontinued in 1995. The program called for emissions reductions for 17 chemicals reported to the Toxics Release Inventory. Using a sample of approximately 12,000 plants, the relationship between 33/50 program participation and adoption of pollution reduction practices is studied for three time periods, 1991–1995 (program life), 1996–2004, and 2005–2013. These practices include source reduction activities (SRAs) and recycling, recovery, and treatment (RRTs). The major findings are that during the program's life, 33/50 participants showed increased adoption of SRAs and RRTs for both targeted and nontargeted chemicals. However, once the program ended, higher adoption rates persisted for RRTs only, with a shift in emphasis toward treatment over recycling and recovery.  相似文献   
104.
105.
Adolescence is a challenging developmental period marked with declines in emotional well-being; however, self-compassion has been suggested as a protective factor. This cross-sectional survey study (N?=?765, grades 7th to 12th; 53?% female; 4?% Hispanic ethnicity; 64?% White and 21?% Black) examined whether adolescents’ self-compassion differed by age and gender, and secondly, whether its associations with emotional well-being (perceived stress, life satisfaction, distress intolerance, depressive symptoms, and anxiety) also differed by age and gender. The findings indicated that older females had the lowest self-compassion levels compared to younger females or all-age males. Self-compassion was associated with all emotional well-being measures, and gender and/or age moderated the associations with anxiety and depressive symptoms. Among older adolescents, self-compassion had a greater protective effect on anxiety for boys than for girls. Additionally, older adolescents with low and average self-compassion had greater levels of depressive symptoms than those with high self-compassion. These results may inform for whom and at what age self-compassion interventions may be implemented to protect adolescents from further declines in emotional well-being.  相似文献   
106.
A comparative analysis of Islamic extremism post-9/11 to 2015 and the effectiveness of the counterterrorism (CT) authorities to counter it in both Western Europe and the United States was conducted. Four measures of effectiveness revealed that 2010–2015 saw a gradual increase in jihadi attacks and in casualties emanating from these attacks, and more jihadists, foreign fighters, and material supporters. Additionally, 2013–2015 saw a 22 percent reduction both in Western Europe and the U.S. CT agencies' ability to counter Islamic extremism. We are losing the War on Terror and our citizens are less safe than they were six years ago. Further analysis revealed that singleton jihadists: (1) were much harder than group-based jihadists to uncover, (2) have been increasing since 2009, and (3) have generated over 70 percent of all jihadi violence. Finally, numerous similarities exist between Western Europe and the United States with respect to jihadism in their homelands and their respective CT effectiveness, indicating close cross-Atlantic CT collaboration since 9/11. This in-depth analysis provides essential threat/hazard information to security, law enforcement, intelligence, and policymaking personnel and the greater homeland security communities.  相似文献   
107.
Throughout his career as a literary critic, Alfred Kazin wrote often and with sympathy and insight about Theodore Dreiser, one of the most powerful, panoramic, and compassionate novelists in American literary history. Kazin was an intense reader and writer, committed in his books, essays, and reviews to connecting with and describing the personality of each author he examined. His interpretive work on Dreiser illuminates what it means to be a literary critic and teacher. When we read Kazin in the midst of twenty-first century theory, ideology, and professionalism, we realize all the more clearly the goal in his literary criticism that he aimed for, achieved, and represented—and that now is missing from literary education and experience.  相似文献   
108.
Scholarship on collaborative governance identifies several structural and procedural factors that consistently influence governance outcomes. A promising next step for collaborative governance research is to explore how these factors interact. Focusing on two dimensions of social learning—relational and cognitive—as outcomes of collaboration, this article examines potential interacting effects of participant diversity and trust. The empirical setting entails 10 collaborative partnerships in the United States that provide advice on marine aquaculture policy. The findings indicate that diversity in beliefs among participants is positively related to relational learning, whereas diversity in participants' affiliations is negatively related to relational learning, and high trust bolsters the positive effects of belief diversity on both relational and cognitive learning. In addition, high trust dampens the negative effects of affiliation diversity on relational learning. A more nuanced understanding of diversity in collaborative governance has practical implications for the design and facilitation of diverse stakeholder groups.  相似文献   
109.
110.
The ongoing health crisis in the Ukraine has persisted for 48 years with a clear division of gender-based outcomes as seen in the decline of male life expectancy and stagnation of female longevity. The purpose of this paper is to investigate differences in self-rated health and system barriers to health care applicable to gender and its intersections because of the differing negative health outcomes for men and women. Intersectionality theory provides an analytic framework for interpreting our results. Utilizing a nationwide sample of the Ukrainian population (N = 1908), we found that low socioeconomic status (SES) women rate their health worse than men generally and any other socioeconomic group. Yet women also face the greatest barriers to health care until older ages when the ailments of men cause them to likewise face the obstacles. In reviewing the barrier to health care scale, one barrier—that of health care services being too expensive—dominated the responses with some 52.5 percent of the sample reporting it. Consequently, the greatest problem in Ukraine with respect to health reform reported by the population is the out-of-pocket costs for care in a system that is officially free. These costs, constituting some 40 percent of all national health expenditures, affect women and the aged the most.  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