全文获取类型
收费全文 | 17357篇 |
免费 | 230篇 |
国内免费 | 16篇 |
专业分类
教育 | 12568篇 |
科学研究 | 1500篇 |
各国文化 | 139篇 |
体育 | 1376篇 |
综合类 | 9篇 |
文化理论 | 117篇 |
信息传播 | 1894篇 |
出版年
2021年 | 162篇 |
2020年 | 270篇 |
2019年 | 394篇 |
2018年 | 529篇 |
2017年 | 542篇 |
2016年 | 495篇 |
2015年 | 313篇 |
2014年 | 425篇 |
2013年 | 3438篇 |
2012年 | 415篇 |
2011年 | 473篇 |
2010年 | 326篇 |
2009年 | 320篇 |
2008年 | 413篇 |
2007年 | 311篇 |
2006年 | 383篇 |
2005年 | 240篇 |
2004年 | 232篇 |
2003年 | 230篇 |
2002年 | 257篇 |
2001年 | 361篇 |
2000年 | 321篇 |
1999年 | 286篇 |
1998年 | 153篇 |
1997年 | 185篇 |
1996年 | 199篇 |
1995年 | 197篇 |
1994年 | 158篇 |
1993年 | 190篇 |
1992年 | 249篇 |
1991年 | 238篇 |
1990年 | 221篇 |
1989年 | 264篇 |
1988年 | 257篇 |
1987年 | 227篇 |
1986年 | 216篇 |
1985年 | 239篇 |
1984年 | 206篇 |
1983年 | 241篇 |
1982年 | 187篇 |
1981年 | 173篇 |
1980年 | 172篇 |
1979年 | 242篇 |
1978年 | 194篇 |
1977年 | 170篇 |
1976年 | 153篇 |
1975年 | 138篇 |
1974年 | 125篇 |
1973年 | 131篇 |
1971年 | 111篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Research in Higher Education - State financial aid grant programs are commonly categorized as either need-based, merit-based, or both, but their initial eligibility requirements include many more... 相似文献
2.
3.
James D. T. Tannock 《Higher Education Quarterly》1992,46(1):108-123
This article describes the Engineering Professors' Conference (EPC) approach to quality assurance for Higher Education Institutions, which is currently the only formalized alternative to British Standard 5750 'Quality Systems'. The EPC approach is based on principles of quality assurance and Total Quality Management which have been developed in industry. These ideas are briefly outlined, and an opinion expressed on the interpretation and application of BSS7S0 for HE. The EPC model is explained, illustrated with example elements taken from the EPC Specification and Guidelines for Quality Assurance in Higher Education. A top-down approach to the development of an institutional quality system is described, based on a quality policy statement. Areas of activity which have an important impact on the quality of education are identified, emphasising the quality assurance requirements of academic departments. Supporting and administrative quality system requirements are also described, as these also play an important role in the quality of education. Formal quality procedures and documentation in key areas are proposed. 相似文献
4.
5.
Jee-Hyub Kim Byung-Kwan Kwak Seungwoo Lee Geunbae Lee Jong-Hyeok Lee 《Information Retrieval》2001,4(2):115-132
In Korean information retrieval, compound nouns play an important role in improving precision in search experiments. There are two major approaches to compound noun indexing in Korean: statistical and linguistic. Each method, however, has its own shortcomings, such as limitations when indexing diverse types of compound nouns, over-generation of compound nouns, and data sparseness in training. In this paper, we propose a corpus-based learning method, which can index diverse types of compound nouns using rules automatically extracted from a large corpus. The automatic learning method is more portable and requires less human effort, although it exhibits a performance level similar to the manual-linguistic approach. We also present a new filtering method to solve the problems of compound noun over-generation and data sparseness. 相似文献
6.
7.
8.
9.
10.