全文获取类型
收费全文 | 9898篇 |
免费 | 66篇 |
国内免费 | 3篇 |
专业分类
教育 | 6583篇 |
科学研究 | 1139篇 |
各国文化 | 330篇 |
体育 | 796篇 |
综合类 | 4篇 |
文化理论 | 74篇 |
信息传播 | 1041篇 |
出版年
2021年 | 87篇 |
2020年 | 135篇 |
2019年 | 192篇 |
2018年 | 222篇 |
2017年 | 264篇 |
2016年 | 246篇 |
2015年 | 157篇 |
2014年 | 204篇 |
2013年 | 1764篇 |
2012年 | 202篇 |
2011年 | 214篇 |
2010年 | 178篇 |
2009年 | 182篇 |
2008年 | 239篇 |
2007年 | 228篇 |
2006年 | 186篇 |
2005年 | 173篇 |
2004年 | 188篇 |
2003年 | 146篇 |
2002年 | 125篇 |
2001年 | 159篇 |
2000年 | 189篇 |
1999年 | 168篇 |
1998年 | 92篇 |
1997年 | 90篇 |
1996年 | 78篇 |
1994年 | 73篇 |
1993年 | 83篇 |
1992年 | 143篇 |
1991年 | 148篇 |
1990年 | 154篇 |
1989年 | 158篇 |
1988年 | 125篇 |
1987年 | 123篇 |
1986年 | 119篇 |
1985年 | 166篇 |
1984年 | 133篇 |
1983年 | 127篇 |
1982年 | 105篇 |
1981年 | 82篇 |
1980年 | 90篇 |
1979年 | 143篇 |
1978年 | 89篇 |
1977年 | 94篇 |
1976年 | 81篇 |
1975年 | 78篇 |
1974年 | 91篇 |
1973年 | 82篇 |
1971年 | 75篇 |
1968年 | 76篇 |
排序方式: 共有9967条查询结果,搜索用时 15 毫秒
991.
992.
Charles B. Truax 《Counselor Education & Supervision》1971,10(4):351-354
The hypothesis that genuineness or congruence is directly causative of therapeutic client change and that self-disclosure is itself a basic precondition for the development of genuineness is proposed and discussed. 相似文献
993.
B J Curtis 《Medical reference services quarterly》1984,3(4):35-44
Health professionals are collecting and charting data about the family history of their patients in order to determine if a predisposition to heart, stroke, cancer and other debilitating conditions can be detected or alleviated through patient education and preventive medicine. Family history-taking for the purposes of preventive medicine is introduced, along with a brief history of the field. The pedigree chart and the genogram are described and their use by health personnel is discussed. A brief search strategy on MEDLINE and a selected bibliography are presented to aid the health sciences librarian to find information on the family history, genograms or pedigree charts. 相似文献
994.
995.
996.
Requests for monographs generated within an interlibrary loan network are analyzed for half-life statistics. It is suggested that demand represents use of the literature more completely than satisfied requests or circulation statistics. Demand in this study is characterized as either regional demand or statewide demand and is related to the level of the network where final processing of the request occurs. A negative exponential distribution is found to adequately characterize both levels of demand as a function of publication date for four subject categories. Corrected demand data is obtained by removing the growth rate of most of the available literature represented by American book publisher output. Based on over 10,000 interlibrary loan requests, negative exponential distributions describe the raw data as well as the corrected data. A shorter half-life was found for regional library demand (10.47 yr) than that found for statewide library demand (15.75 yr). Applying the correction factor to reflect the growth rate of the available literature tends to increase the half-life when compared to the raw data, and changes the ordering of subject classes with respect to ascending half-lives. 相似文献
997.
To facilitate the adoption of a common core curriculum in the Schools of Engineering and of Mining at the University of Arizona, the general physics course for engineers has been dropped. The physical foundation for engineering is taught in a new series of courses in the Civil, Mechanical, Electrical Engineering, and Physics Departments as part of the common core. The Physics Department teaches atomic, molecular, nuclear, and solid-state physics in a seven-unit junior-level course. There are grounds for a re-examination of the role of physics in engineering education and perhaps for extensive changes. It is suggested, however, that the role is, and should remain, vital, in the interests of science, of engineering, and of education. 相似文献
998.
999.
1000.
The evolution of graduate education in electrical engineering began in the early 1890' s and progressed at a rapid pace in the 1920' s, particularly in metropolitan areas conscious of community needs. In these areas, evening programs held the spotlight because of the ever-demanding need to provide graduate engineers with advanced knowledge. Such cooperation between community interests and colleges has resulted in a wide variety of patterns of part-time study on campus and, more recently, off campus. The later development is viewed with criticism in several educational circles although off-campus programs are filling tremendous requirements arising from industrial concentrations not within easy reach of a university or college. The evolution seems to indicate that off campus programs are not a passing fancy and that such requirements are very likely to be best satisfied in the long run by the establishment of graduate centers with a faculty in residence. As an example, the Polytechnic Graduate Center on Long Island is described. (The Center, actually located in Farmingdale, N. Y., began its operation on September 25, 1961, with a graduate student body of nearly 700 in day and evening programs involving advanced courses in Aerospace Engineering, Electrical Engineering, Electrophysics, Mathematics, Mechanical Engineering, Physics, and Industrial Management. Close to 150 part-time day students are attending on a released-time basis, in addition to 45 full-time students in residence.) 相似文献