全文获取类型
收费全文 | 18531篇 |
免费 | 589篇 |
专业分类
各国政治 | 652篇 |
工人农民 | 1377篇 |
世界政治 | 1001篇 |
外交国际关系 | 593篇 |
法律 | 11594篇 |
中国共产党 | 1篇 |
中国政治 | 55篇 |
政治理论 | 3803篇 |
综合类 | 44篇 |
出版年
2021年 | 63篇 |
2020年 | 197篇 |
2019年 | 239篇 |
2018年 | 1481篇 |
2017年 | 1461篇 |
2016年 | 1297篇 |
2015年 | 305篇 |
2014年 | 286篇 |
2013年 | 1031篇 |
2012年 | 415篇 |
2011年 | 1181篇 |
2010年 | 1261篇 |
2009年 | 865篇 |
2008年 | 997篇 |
2007年 | 926篇 |
2006年 | 279篇 |
2005年 | 310篇 |
2004年 | 415篇 |
2003年 | 380篇 |
2002年 | 264篇 |
2001年 | 465篇 |
2000年 | 425篇 |
1999年 | 293篇 |
1998年 | 193篇 |
1997年 | 158篇 |
1996年 | 146篇 |
1995年 | 144篇 |
1994年 | 166篇 |
1993年 | 132篇 |
1992年 | 198篇 |
1991年 | 217篇 |
1990年 | 205篇 |
1989年 | 213篇 |
1988年 | 205篇 |
1987年 | 192篇 |
1986年 | 231篇 |
1985年 | 206篇 |
1984年 | 167篇 |
1983年 | 176篇 |
1982年 | 117篇 |
1981年 | 121篇 |
1980年 | 85篇 |
1979年 | 136篇 |
1978年 | 81篇 |
1977年 | 82篇 |
1976年 | 69篇 |
1974年 | 74篇 |
1973年 | 66篇 |
1972年 | 66篇 |
1970年 | 46篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
281.
282.
283.
284.
285.
286.
287.
288.
Jill M. Washburn-Ormachea Stephen B. Hillman Shlomo S. Sawilowsky 《Journal of youth and adolescence》2004,33(1):31-40
Gender and gender-role orientation differences were explored on adolescents' coping with peer stressors. Eighth-grade and ninth-grade public junior high school students (N = 285) completed the COPE, reporting the strategies they recently used to deal with a stressful peer-related situation. Measures of gender-role orientation (Bem Sex-Role Inventory) and demographic information also were obtained. Factor analysis of the COPE revealed 4 distinct coping factors: active, avoidant, acceptance, and emotion-focused. The most frequently reported stressful event was arguments/fights with same-sex friends. Girls reported more arguments/fights with opposite-sex friends. Boys reported more physical fights and threats. Students' ratings of how much the situation mattered were used as a covariate in a MANCOVA to compare coping by gender and gender-role orientation, to control for perceived stressfulness of situations. Significant gender-role orientation differences were found for active, acceptance, and emotion-focused coping. 相似文献
289.
Gabriel P. Kuperminc Sidney J. Blatt Golan Shahar Christopher Henrich Bonnie J. Leadbeater 《Journal of youth and adolescence》2004,33(1):13-30
Ethnic group differences in the contributions of self-definition (self-worth and efficacy) and interpersonal relatedness with parents and peers to changes in psychological and school adjustment were examined among 448 White, Black, and Latino girls and boys (11–14 years of age). Self-report questionnaires and school records were evaluated for socioeconomic and ethnic group differences in patterns of change over 1 year. Overall similarity in changes over time across ethnic groups was found for relatedness, self-definition, and psychological adjustment, although Black and Latino youth reported more overall adjustment difficulties, Black youth reported less positive relationships with parents, and lower SES youth reported less positive peer relationships than others. Ethnic group differences in changes to school adjustment, even after controlling SES, suggested a cultural variation in which often cited declines in school adjustment during middle school characterize White adolescents to a greater degree than Black or Latino adolescents. Ethnicity moderated associations of relatedness and self-definition with psychological and school adjustment such that Black and Latino youth appeared particularly vulnerable to experiences that threaten closeness and trust in relationships. Results pointed to potentially important situational and cultural differences in maladaptive and adaptive developmental processes across ethnicity. 相似文献
290.
The current study used a person-oriented approach to examine the participation of adolescents in both constructive, organized activities as well as relaxed leisure activities. The goal of this research was to identify different profiles of involvement in activities and the relations to psychosocial indicators for these differing groups. Activity profiles were created using cluster analytic techniques for 918 adolescents' responses in 11 activity domains. The groups were found to be both statistically and substantively unique and consistent with findings from previous research. Further, the groups showed meaningful and consistent differences across a range of psychosocial indicators, including academic performance, problem behavior, and mental health. Results indicated that adolescents' activity involvement was related to their psychological and behavioral functioning and that the profiles of participation across activity settings provide a more holistic view of teens' choices than do single variable models. 相似文献