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   20639篇
  免费   592篇
各国政治   919篇
工人农民   751篇
世界政治   1817篇
外交国际关系   791篇
法律   11714篇
中国共产党   2篇
中国政治   92篇
政治理论   4938篇
综合类   207篇
  2020年   247篇
  2019年   299篇
  2018年   412篇
  2017年   479篇
  2016年   536篇
  2015年   364篇
  2014年   390篇
  2013年   2228篇
  2012年   498篇
  2011年   507篇
  2010年   432篇
  2009年   489篇
  2008年   542篇
  2007年   574篇
  2006年   550篇
  2005年   498篇
  2004年   495篇
  2003年   514篇
  2002年   469篇
  2001年   741篇
  2000年   687篇
  1999年   565篇
  1998年   372篇
  1997年   306篇
  1996年   234篇
  1995年   269篇
  1994年   297篇
  1993年   272篇
  1992年   397篇
  1991年   410篇
  1990年   372篇
  1989年   399篇
  1988年   371篇
  1987年   392篇
  1986年   389篇
  1985年   393篇
  1984年   342篇
  1983年   358篇
  1982年   303篇
  1981年   284篇
  1980年   211篇
  1979年   283篇
  1978年   197篇
  1977年   175篇
  1976年   154篇
  1975年   140篇
  1974年   153篇
  1973年   136篇
  1972年   126篇
  1969年   102篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
981.
982.
Self-report questionnaires are frequently used in youth research, but doubt remains whether total anonymity affects the results. This study compared the responses of 704 mainly 16–17-year-old adolescents to self-report measures of various health indicators in 2 groups: anonymous and confidential collection. For most health indicators no significant differences were found. Perceived health, use of alcohol, and aggressive behavior (for boys) were reported significantly less frequently in the confidential group (small effect size). It appeared that pupils with high scores on social desirability do not respond differently at most health indicators in the 2 conditions. For most health characteristics, epidemiologically useful outcomes may be derived from confidential self-report measures, which are also valuable for detecting individual at-risk children. Similar studies in lower grades and other types of education should confirm the results.Youth Department, Municipal Health Service Rotterdam area. Main research interests are emotional and behavioral problems of adolescents, youth health care, monitoring.Youth Department, Municipal Health Service Rotterdam area. Main research interests are emotional and behavioral problems of adolescents, youth health care, monitoring.Research Department, Municipal Health Service Rotterdam area. Major research interests include emotional and behavioral problems of adolescents, suicidal behavior, youth health care, monitoring.  相似文献   
983.
The role of interpersonal sensitivity in the relation between romantic stress and depression was examined in 55 adolescent girls from an inner-city high school. Depression, interpersonal sensitivity, and chronic and episodic romantic stress were measured at two time points, 6 months apart. Interpersonal sensitivity was found to moderate the longitudinal relation between romantic stress (both chronic and episodic) and depression. In contrast, interpersonal sensitivity did not potentiate depressive responses to non-romantic interpersonal stress, suggesting particular importance of stress in the romantic domain for adolescent girls. Results indicate that girls' sensitivities to romantic relationship stress should be specifically addressed in depression prevention and intervention programs.Received her PhD from the University of Southern California. Research interests include the influence of romantic relationship factors, such as romantic stress and dating violence, on the development of depression during adolescence.Received her PhD from the University of California, Los Angeles. Research interests include the interplay between adolescent depression, personality disorder symptoms, and interpersonal variables including adjustment in friendships and romantic relationships.Research interests include cognitive and interpersonal factors in adolescent depression.  相似文献   
984.
This study examined the factors associated with resistance to peer pressure toward antisocial behaviors among a sample of Mexican-origin adolescents (n=564) living in a large Southwestern city in the U.S. A model examining the influence of generational status, emotional autonomy from parents, and self-esteem on resistance to peer pressure was tested independently for boys and girls. Gender differences emerged in the factors that influenced resistance to peer pressure. Results indicated that resistance to peer pressure was influenced by generational status and emotional autonomy from parents for both boys and girls. However, self-esteem was found to influence resistance to peer pressure only for boys.Mayra Y. Bámaca is a graduate student in Family and Human Development at Arizona State University. Her research interests include adolescent development among ethnically diverse populations, the influence of contextual factors in development, parenting adolescents, and resiliency among Latino adolescents and their families. This work was based on the master’s thesis of the first author.Adriana J. Uma?a-Taylor received her Ph.D. from the University of Missouri-Columbia and is currently an Assistant Professor of Family and Human Development at Arizona State University. Her research interests include ethnic identity formation during adolescence and resilience among Latino adolescents and their families.This study was supported, in part, by a grant to the second author from the Fahs Beck Fund for Research and Experimentation of the New York Community Trust.  相似文献   
985.
986.
987.
988.
989.
China's rapidly growing motor vehicle fleet is changing the makeup of its urban atmosphere. While the two major problem pollutants historically have been particulates and sulfur dioxide, the growth in the number of automobiles has generated substantially increased levels of nitrogen dioxide (NO2). This paper examines and values the mortality health effects (reduced premature deaths) from cleaning up these three pollutants. Findings indicate that valued gains from reduced air pollution mortality can average 3% of a city's GDP. Moreover, the growing auto fleet may generate a ten-fold increase in NO2-based mortality costs and offset other, ongoing cleanup efforts in many Chinese cities. Specifically, the paper explores how the increasing number of automobiles might diminish or offset environmental cleanup activities focused upon particulate and sulfur dioxide pollution.  相似文献   
990.
Robert S. Ross 《当代中国》2006,15(48):443-458
Taiwan is a revisionist power. Its independence movement challenges a vital status-quo interest of mainland China's opposition to a de jure Taiwan declaration of independence and maintaining, however ambiguously, Taiwan's commitment to the ‘one-China’ formulation. Why is it that a small and vulnerable island off the coast of a great power has continued to challenge the vital interest of that great power and risk war? Adopting a ‘levels of analysis’ approach to Taiwan's mainland policy, this paper addresses this question by examining four prevalent explanations for Taiwan's revisionist diplomacy: (1) the mainland deterrent is ineffective, reflecting Taiwan doubts about either mainland capabilities or mainland resolve to wage a retaliatory war; (2) in an example of the security dilemma in alliance politics, US commitment to Taiwan, although aimed at deterring PRC use of force, encourages Taiwan to challenge the status quo because the Taiwan leadership is confident of US intervention and US ability to defend Taiwan; (3) because of the development of a ‘Taiwan identity’ and of corresponding domestic political pressures, the Democratic Progressive Party has been compelled to adopt a pro-independence policy; (4) Chen Shui-bian has a personal commitment to Taiwan independence and has been willing to challenge the mainland's interest in one-China, despite risk of heightened conflict and regardless of domestic political considerations.  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