全文获取类型
收费全文 | 34929篇 |
免费 | 626篇 |
国内免费 | 1篇 |
专业分类
管理学 | 4558篇 |
民族学 | 163篇 |
人才学 | 7篇 |
人口学 | 3342篇 |
丛书文集 | 178篇 |
教育普及 | 3篇 |
理论方法论 | 3207篇 |
现状及发展 | 2篇 |
综合类 | 472篇 |
社会学 | 17081篇 |
统计学 | 6543篇 |
出版年
2023年 | 157篇 |
2021年 | 192篇 |
2020年 | 512篇 |
2019年 | 765篇 |
2018年 | 834篇 |
2017年 | 1143篇 |
2016年 | 851篇 |
2015年 | 652篇 |
2014年 | 828篇 |
2013年 | 5650篇 |
2012年 | 1166篇 |
2011年 | 1093篇 |
2010年 | 836篇 |
2009年 | 752篇 |
2008年 | 863篇 |
2007年 | 904篇 |
2006年 | 839篇 |
2005年 | 798篇 |
2004年 | 767篇 |
2003年 | 696篇 |
2002年 | 744篇 |
2001年 | 893篇 |
2000年 | 836篇 |
1999年 | 768篇 |
1998年 | 592篇 |
1997年 | 544篇 |
1996年 | 554篇 |
1995年 | 527篇 |
1994年 | 504篇 |
1993年 | 498篇 |
1992年 | 578篇 |
1991年 | 561篇 |
1990年 | 495篇 |
1989年 | 508篇 |
1988年 | 493篇 |
1987年 | 440篇 |
1986年 | 427篇 |
1985年 | 478篇 |
1984年 | 475篇 |
1983年 | 448篇 |
1982年 | 367篇 |
1981年 | 316篇 |
1980年 | 313篇 |
1979年 | 339篇 |
1978年 | 296篇 |
1977年 | 277篇 |
1976年 | 243篇 |
1975年 | 258篇 |
1974年 | 200篇 |
1973年 | 178篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
The authors maintain that the social learning theory of career development and counseling has not been applied to diverse populations. To address this gap in the literature, the authors conducted a qualitative analysis of interviews with 21 middle school students in a low‐income, culturally diverse, inner‐city public school. Four themes emerged, reflecting the influence of discrimination on participants' career learning: contextual barriers and resources for learning, and psychological barriers and resources for learning. The authors provide a conceptual framework for assessing resources and barriers and a rationale for why these aspects often remain hidden or unexamined in career assessment with clients who are vulnerable to discrimination. 相似文献
2.
Ackerly Brooke A. 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2002,13(3):322-324
VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - 相似文献
3.
A.M. Mathai 《Revue canadienne de statistique》1993,21(3):277-283
The product of two independent or dependent scalar normal variables, sums of products, sample covariances, and general bilinear forms are considered. Their distributions are shown to belong to a class called generalized Laplacian. A growth-decay mechanism is also shown to produce such a generalized Laplacian. Sets of necessary and sufficient conditions are derived for bilinear forms to belong to this class. As a generalization, the distributions of rectangular matrices associated with multivariate normal random vectors are also discussed. 相似文献
4.
5.
Tracy AJ Erkut S 《Sociological perspectives : SP : official publication of the Pacific Sociological Association》2002,45(4):445-466
Athletics is the most prominent extracurricular activity in U.S. secondary schools in terms of student participation and school budgets. The latter is often justified on the grounds that healthy bodies produce healthy minds, that school sports boost school spirit, and that participation in school-based sports increases students' self-esteem. In this article we examine the interrelationships among participation in a school-based sport and the benefits assumed to be associated with it. Specifically, we test a model that postulates that school spirit, operationalized as attachment to school, and healthy bodies, operationalized as a sense of physical well-being, mediate the relationship between school sports and self-esteem. Data from the National Longitudinal Study of Adolescent Health on Caucasian and African American girls and boys were employed to test the model. School attachment and physical well-being absorbed the statistical effect of participating in a sport for all four gender-by-race groups. Among Caucasian girls a negative residual effect of sports participation was observed, which suggests that sports participation encapsulates multiple effects with contradictory influences. For African American girls school attachment by itself was not a significant mediator of the effect of sports participation on self-esteem. For all groups a sense of physical well-being was the more powerful mediator. 相似文献
6.
7.
Concurrent and longitudinal associations between peer crowd affiliation and internalized distress were examined in a sample of 246 youth (148 girls, 98 boys). Children completed measures of depression, social anxiety, loneliness, and self‐esteem when they were in grades 4 to 6 (Time 1), and again 6 years later during adolescence (grades 10 – 12; Time 2). At Time 2, adolescents also reported their self‐concept and their identification with reputation‐based peer crowds, including Populars, Jocks, Brains, Burnouts, Non‐Conformists, and None/Average crowds. Results indicated that adolescents' report of peer crowd affiliation was concurrently associated with self‐concept and levels of internalizing distress. Follow‐back analyses of internalizing trajectories revealed that Populars/Jocks had experienced significant declines in internalizing distress across development, whereas Brains exhibited some increases in internalizing distress between childhood and adolescence. 相似文献
8.
The hypothesis that irritability and contingency detection are negatively correlated was examined in thirty‐one 6‐month‐old infants. Observation and maternal report‐based assessments of irritability were correlated with both a criterion score and a continuous score of contingency detection. Results indicated that greater irritability in infants was associated with lower contingency detection scores. Discussion focuses on identifying processes by which the 2 constructs may be associated. 相似文献
9.
Corvette Barbara A. Budjac 《Sociological Practice: A Journal of Clinical and Applied Sociology》2002,4(3):181-181
Sociological Practice - 相似文献
10.
Franz Urban Pappi Susumu Shikano 《KZfSS K?lner Zeitschrift für Soziologie und Sozialpsychologie》2002,54(3):444-475
A normal vote is a hypothetical election result following exclusively from predispositions of voters towards political parties which result from long-term or middle-term influences. The influence of short-term factors like attractive candidates or issues from the recent campaign have to be eliminated within the abstract model. As an operationalization for German Bundestag elections for this purpose the average vote intentions of population groups are used which are part of the politicized German social structures such as catholics, especially when they attend church frequently, or employees (Arbeitnehmer) and union members who have formed enduring coalitions with a political party. This operationalization is compared with a model originally developed for the United States. According to this model, the long-term factor is measured by party identification. All Bundestag elections of the Kohl era are analyzed, for which the Politbarometer surveys of the Forschungsgruppe Wahlen, Mannheim, immediately before the Bundestag elections are used as a data basis. The vote intentions which can be derived from the politicized social structure are shown to be a stabile basis for a German normal vote so that it makes sense to compute normal vote results from 1983 to 1998. 相似文献