全文获取类型
| 收费全文 | 33097篇 |
| 免费 | 564篇 |
| 国内免费 | 50篇 |
专业分类
| 教育 | 23506篇 |
| 科学研究 | 3245篇 |
| 各国文化 | 325篇 |
| 体育 | 2633篇 |
| 综合类 | 39篇 |
| 文化理论 | 279篇 |
| 信息传播 | 3684篇 |
出版年
| 2022年 | 172篇 |
| 2021年 | 341篇 |
| 2020年 | 519篇 |
| 2019年 | 718篇 |
| 2018年 | 1014篇 |
| 2017年 | 1069篇 |
| 2016年 | 1006篇 |
| 2015年 | 628篇 |
| 2014年 | 843篇 |
| 2013年 | 6239篇 |
| 2012年 | 810篇 |
| 2011年 | 899篇 |
| 2010年 | 724篇 |
| 2009年 | 642篇 |
| 2008年 | 742篇 |
| 2007年 | 700篇 |
| 2006年 | 653篇 |
| 2005年 | 561篇 |
| 2004年 | 565篇 |
| 2003年 | 507篇 |
| 2002年 | 516篇 |
| 2001年 | 817篇 |
| 2000年 | 643篇 |
| 1999年 | 595篇 |
| 1998年 | 314篇 |
| 1997年 | 365篇 |
| 1996年 | 370篇 |
| 1995年 | 319篇 |
| 1994年 | 341篇 |
| 1993年 | 291篇 |
| 1992年 | 449篇 |
| 1991年 | 459篇 |
| 1990年 | 476篇 |
| 1989年 | 454篇 |
| 1988年 | 395篇 |
| 1987年 | 350篇 |
| 1986年 | 369篇 |
| 1985年 | 452篇 |
| 1984年 | 366篇 |
| 1983年 | 325篇 |
| 1982年 | 263篇 |
| 1981年 | 268篇 |
| 1980年 | 241篇 |
| 1979年 | 341篇 |
| 1978年 | 287篇 |
| 1977年 | 255篇 |
| 1976年 | 207篇 |
| 1975年 | 207篇 |
| 1974年 | 190篇 |
| 1973年 | 213篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
991.
Roger A. McCain 《Journal of Cultural Economics》1995,19(1):1-15
One can approach the economics of the arts, as any field of applied economics, in either of two ways. First, one can treat economic theory and econometric technique as subjects settled by specialists in those fields, to be used in the ec onomics of the arts as they are given, very much as if one were studying the demand for maize. Alternatively, one can treat the economics of the arts as a field which may need and suggest its own developments in theory and technique, suitable to its spec ial problems and processes, from which general economic theory and econometric theory might in principle learn something. Perhaps this latter view is implausible, given the high state of development of economic theory and econometrics in the modern liter ature. Yet many of the advances embodied in these fields have come from particular areas of application-and the economics of maize has been a particularly fertile field.I am indebted to participants in the Seventh International Conference on Cultural Economics, Fort Worth, Texas, October 1992; to p articipants in the Seminar on the Economics of the Arts, Venice, Italy, December 1992; to participants in the conference of the Pennsylvania Economists' Association, Wiles-Barre, PA, June, 1993; to participants in the second conference on Simulating Soci eties, Siena, Italy, July 1993; to participants in the conference of the Society for the Advancement of Behavioral Economics, Rensselaerville, NY, August 1993; and to participants in the Third Conference on Artificial Intelligence in Economics and Manage ment, Portland, OR, August 1993, for useful comments on topics related to the research reported in this paper. Errors and omissions are, of course, attributable to the author. 相似文献
992.
993.
994.
Differences in motor performance according to chronological age and gender of 341 young Nigerian children (ages 3 to 5) were examined. Motor test items designed by Morris et al. (1981) were administered to the subjects. Analysis of variance was used to determine significant differences in the motor performance of the groups. In the whole sample, more age differences than sex differences in performance were noted. Except for the balancing and running performances of the girls, a fairly linear trend of improvement with age was observed in the motor performances of the groups. At each age level the boys consistently performed better than the girls in four of the six motor tests (catching, standing long jump, tennis ball throw and speed run). Generally, the 4- and 5-year-old children performed homogeneously, with a great disparity in performance noted for the 3-year-old children. The results of this study confirm that age and sex differences in motor performance occur at early childhood. Prospective studies should seek to control the extraneous factors which influence motor development and account for the observed differences in motor performance of pre-school children. 相似文献
995.
The formal creation of an Integrated Academic Information Management System (IAIMS) at the University of Utah began in the fall of 1983. The keystone of the IAIMS effort is the HELP hospital information system. IAIMS at the University of Utah is a broad-based program extending across the Health Sciences Center and beyond to health professionals throughout the inter-mountain area. This paper describes the background that led to IAIMS, the IAIMS planning process, and the library's participation in this effort. 相似文献
996.
997.
998.
999.
Hennepin County Community Services, a large urban agency in the midwestern United States, developed specific procedures for investigating complaints of abuse and neglect of children in foster care in 1980. During the period from May 1980 through November 1981, approximately 125 complaints of abuse and neglect in foster homes were investigated. This article discusses the Protocol, including the institutional abuse meeting, investigation by an independent third party, and statements of finding. Factors that appear to be significant in abusing foster parents are marital status, if the foster parents had children of their own, length of time licensed, and presence of previous complaints. Victims were slightly more likely to be male, aged 4-12. Many victims appeared to have adjusted well to the foster homes. Information is presented on how the abuse was reported. Recommendations include: investigations conducted by an objective third person, commitment of the administration, and enlistment of legal personnel and foster parents during implementation. Also included are prevention of abuse through comprehensive screening and then training of foster parents, social workers' close contact with foster parents and foster children, avoiding high risk placement, forbidding corporal punishment, and sensitizing social workers to abuse-neglect of children in foster care. 相似文献
1000.