全文获取类型
收费全文 | 23678篇 |
免费 | 452篇 |
国内免费 | 1篇 |
专业分类
管理学 | 3548篇 |
民族学 | 108篇 |
人才学 | 2篇 |
人口学 | 2198篇 |
丛书文集 | 96篇 |
教育普及 | 2篇 |
理论方法论 | 2252篇 |
现状及发展 | 1篇 |
综合类 | 318篇 |
社会学 | 11523篇 |
统计学 | 4083篇 |
出版年
2023年 | 126篇 |
2021年 | 139篇 |
2020年 | 359篇 |
2019年 | 523篇 |
2018年 | 565篇 |
2017年 | 793篇 |
2016年 | 600篇 |
2015年 | 468篇 |
2014年 | 582篇 |
2013年 | 3709篇 |
2012年 | 806篇 |
2011年 | 800篇 |
2010年 | 586篇 |
2009年 | 495篇 |
2008年 | 583篇 |
2007年 | 626篇 |
2006年 | 602篇 |
2005年 | 581篇 |
2004年 | 547篇 |
2003年 | 479篇 |
2002年 | 540篇 |
2001年 | 627篇 |
2000年 | 613篇 |
1999年 | 539篇 |
1998年 | 393篇 |
1997年 | 372篇 |
1996年 | 363篇 |
1995年 | 340篇 |
1994年 | 322篇 |
1993年 | 342篇 |
1992年 | 388篇 |
1991年 | 357篇 |
1990年 | 326篇 |
1989年 | 335篇 |
1988年 | 331篇 |
1987年 | 283篇 |
1986年 | 278篇 |
1985年 | 304篇 |
1984年 | 309篇 |
1983年 | 287篇 |
1982年 | 250篇 |
1981年 | 212篇 |
1980年 | 198篇 |
1979年 | 223篇 |
1978年 | 199篇 |
1977年 | 177篇 |
1976年 | 149篇 |
1975年 | 169篇 |
1974年 | 130篇 |
1973年 | 124篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Michael Rodriguez 《Serials Review》2020,46(2):150-156
AbstractAccessibility of library electronic resources is a must. Its importance derives from professional ethics of librarianship, rising total costs of acquisition, and mounting legal challenges to colleges and universities that fail to provide resources accessible to users with disabilities. Library staff are responsible for ensuring the accessibility of vendor-licensed eresources. This column reviews the accessibility clauses of nine model license agreements for electronic resources. It describes terms that should go into an optimal accessibility clause and creates a composite model clause. It also provides guidance for library staff seeking to negotiate stronger accessibility language into vendor license agreements. Finally, it addresses the impact of accommodation requests on the total cost of acquiring library eresources, concluding with a call to redouble efforts to advocate for greater accessibility and educate both vendors and library staff about its importance. 相似文献
2.
3.
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.
8.
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
9.
THE EAST END, THE WEST END, AND KING'S CROSS: ON CLUSTERING IN THE FOUR-PLAYER HOTELLING GAME 总被引:1,自引:0,他引:1
We study experimentally a standard four-player Hotelling location game with a uniform density of consumers and inelastic demand. The pure strategy Nash equilibrium configuration consists of two firms located at one quarter of the "linear city," and the other two at three quarters. We do not observe convergence to such an equilibrium. In our experimental data we find three clusters. Besides the direct proximity of the two equilibrium locations, this concerns the focal midpoint. Moreover, we observe that whereas this midpoint appears to become more notable over time, other focal points fade away. We explain how these observations are related to best-response dynamics, and to the fact that the players rely on best-responses in particular when they are close to the equilibrium configuration. 相似文献
10.
Jacobs Ronald N. Glass Daniel J. 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2002,13(3):235-252
Media publicity is an important resource for contemporary voluntary associations, but very little is actually known about the resources and organizational characteristics that are most important for getting media attention. To address this question, we collected and analyzed data on the organizational attributes and news publicity of 739 nonprofit organizations in New York City. We find that an organization's income, paid staff, membership size, and library resources are significantly related to getting media publicity, whereas the number of chapter affiliations is inversely related to publicity. Association type is also a significant factor that influences an organization's ability to get publicity. We discuss the implications that these findings have for current debates about advocacy and civic engagement in the nonprofit sector. 相似文献