全文获取类型
收费全文 | 11879篇 |
免费 | 209篇 |
国内免费 | 2篇 |
专业分类
管理学 | 1804篇 |
民族学 | 64篇 |
人才学 | 1篇 |
人口学 | 1030篇 |
丛书文集 | 55篇 |
理论方法论 | 1100篇 |
综合类 | 114篇 |
社会学 | 6084篇 |
统计学 | 1838篇 |
出版年
2023年 | 55篇 |
2020年 | 168篇 |
2019年 | 216篇 |
2018年 | 239篇 |
2017年 | 303篇 |
2016年 | 276篇 |
2015年 | 200篇 |
2014年 | 259篇 |
2013年 | 2064篇 |
2012年 | 285篇 |
2011年 | 319篇 |
2010年 | 253篇 |
2009年 | 223篇 |
2008年 | 300篇 |
2007年 | 297篇 |
2006年 | 292篇 |
2005年 | 290篇 |
2004年 | 250篇 |
2003年 | 220篇 |
2002年 | 268篇 |
2001年 | 245篇 |
2000年 | 260篇 |
1999年 | 216篇 |
1998年 | 198篇 |
1997年 | 182篇 |
1996年 | 180篇 |
1995年 | 190篇 |
1994年 | 195篇 |
1993年 | 182篇 |
1992年 | 189篇 |
1991年 | 203篇 |
1990年 | 218篇 |
1989年 | 189篇 |
1988年 | 211篇 |
1987年 | 191篇 |
1986年 | 161篇 |
1985年 | 173篇 |
1984年 | 192篇 |
1983年 | 189篇 |
1982年 | 130篇 |
1981年 | 114篇 |
1980年 | 126篇 |
1979年 | 150篇 |
1978年 | 131篇 |
1977年 | 101篇 |
1976年 | 124篇 |
1975年 | 84篇 |
1974年 | 99篇 |
1973年 | 69篇 |
1972年 | 59篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
The authors review the trends in the use of computers in the delivery and support of career guidance and counseling identified at the symposium International Perspectives on Career Development. The papers presented emphasized that 20th‐century computer‐based systems continue to be used, mainly delivered via the World Wide Web. These systems are enhanced through audio, video, graphics, strategies to provide needs assessment, and support by cybercounselors or expert system design. The papers also revealed a new trend: the use of elegant Web sites to store and search immense libraries of resources needed by professionals and clients and to facilitate communication and collaboration among professionals in cyberspace. Concerns, issues, and resources related to many areas, including the readiness of clients to use computer‐based systems, were also raised; existing sources of guidelines are noted. 相似文献
33.
34.
35.
Silphids in urban forests: Diversity and function 总被引:2,自引:0,他引:2
Many ecologists have examined the process of how urbanization reduces biological diversity but rarely have its ecological consequences been assessed. We studied forest-dwelling burying beetles (Coleoptera: Silphidae)—a guild of insects that requires carrion to complete their life cycles—along an urban-rural gradient of land use in Maryland. Our objective was to determine how forest fragmentation associated with urbanization affects (1) beetle community diversity and structure and (2) the ecological function provided by these insects, that is, decomposition of vertebrate carcasses. Forest fragmentation strongly reduced burying beetle diversity and abundance, and did so far more pervasively than urbanization of the surrounding landscape. The likelihood that beetles interred experimental baits was a direct, positive function of burying beetle diversity. We conclude that loss of burying beetle diversity resulting from forest fragmentation could have important ecological consequences in urban forests. 相似文献
36.
James Wickham 《Innovation: The European Journal of Social Science Research》2004,17(3):187-204
This paper investigates whether EU research programmes have led to innovations in European social research. This is based on an assessment of a group of EU‐funded projects on the changing nature of work in Europe. EU‐funded projects have contributed to the creation of a European social space for European researchers, but at the cost of consolidating English as the lingua franca of European social research. Such projects tend to involve heterogeneous research actors and are oriented towards policy issues. To some extent they are therefore representative of a ‘Mode 2’ form of knowledge production. More clearly, they have ensured that social research about Europe is no longer simply comparative research. The new EU Sixth Framework Programme on RTD will undermine many of these achievements through its focus on conventional definitions of ‘excellence’ and the insistence on large‐scale research instruments. 相似文献
37.
38.
While shows like The X-Files and 24 have merged conspiracy theories with popular science (fictions), some video games have been pushing the narrative even further. Electronic Art's Majestic game was released in July 2001 and quickly generated media buzz with its unusual multi-modal gameplay. Mixing phone calls, faxes, instant messaging, real and "fake' websites, and email, the game provides a fascinating case of an attempt at new directions for gaming communities. Through story, mode of playing, and use of technology, Majestic highlights the uncertain status of knowledge, community and self in a digital age; at the same time, it allows examination of alternative ways of understanding games' role and purpose in the larger culture. Drawing on intricate storylines involving government conspiracies, techno-bio warfare, murder and global terror, players were asked to solve mysteries in the hopes of preventing a devastating future of domination. Because the game drew in both actual and Majestic-owned/-designed websites, it constantly pushed those playing the game right to borders where simulation collides with " factuality'. Given the wide variety of "legitimate' conspiracy theory, alien encounters and alternative science web pages, users often could not distinguish when they were leaving the game's pages and venturing into " real' World Wide Web sites. Its further use of AOL's instant messenger system, in which gamers spoke not only to bots but to other players, pushed users to evaluate constantly both the status of those they were talking to and the information being provided. Additionally, the game required players to occupy unfamiliar subject positions, ones where agency was attenuated, and which subsequently generated a multi-layered sense of unease among players. This mix of authentic and staged information in conjunction with technologically mediated roles highlights what are often seen as phenomenon endemic to the Internet itself; that is, the destabilization of categories of knowing, relating, and being. 相似文献
39.
W. Andrew Collins 《Journal of research on adolescence》2003,13(1):1-24
Adolescents' romantic relationships have attracted popular interest, but, until recently, little scientific curiosity. Research has been impeded by erroneous assumptions that adolescent relationships are trivial and transitory, that they provide little information beyond measures of the influence of parent‐child and peer relationships, and that their impact is primarily associated with problems of behavior and adjustment. This article proposes that distinguishing five features of romantic relationships (involvement, partner selection, relationship content, quality, and cognitive and emotional processes) is essential to describing adolescents' relationships and their developmental significance. These distinctions also help to clarify the role of context, age‐related variations, and individual differences in the impact of romantic experiences. Research is needed to illuminate questions of how and under what conditions romantic relationships affect individual development and how romantic and other close relationships jointly influence developmental trajectories during adolescence. 相似文献
40.
Laurie MacKinnon Kerrie James 《Australian and New Zealand Journal of Family Therapy》1992,13(2):59-71
This paper, the third in a series concerned with family therapy in cases involving children at risk of abuse, describes an approach to maximising parents' interest and commitment to therapy. After overviewing the difficulties faced by therapists in working with parents who are notorious for their ‘resistance’, we provide guidelines for minimising the negative consequences of notification and for constructing therapeutic leverage in order to elicit and maintain parents' motivation throughout the course of therapy. 相似文献