全文获取类型
收费全文 | 20639篇 |
免费 | 592篇 |
专业分类
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 |
出版年
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.
Petra M. van de Looij-Jansen Judith E. J. Goldschmeding Erik Jan de Wilde 《Journal of youth and adolescence》2006,35(4):652-658
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.
Christie J. Rizzo Shannon E. Daley Brent H. Gunderson 《Journal of youth and adolescence》2006,35(3):444-453
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