全文获取类型
收费全文 | 566篇 |
免费 | 15篇 |
专业分类
教育 | 501篇 |
科学研究 | 2篇 |
各国文化 | 5篇 |
体育 | 12篇 |
文化理论 | 2篇 |
信息传播 | 59篇 |
出版年
2022年 | 3篇 |
2021年 | 6篇 |
2020年 | 4篇 |
2019年 | 21篇 |
2018年 | 19篇 |
2017年 | 23篇 |
2016年 | 23篇 |
2015年 | 10篇 |
2014年 | 21篇 |
2013年 | 157篇 |
2012年 | 10篇 |
2011年 | 12篇 |
2010年 | 13篇 |
2009年 | 13篇 |
2008年 | 18篇 |
2007年 | 25篇 |
2006年 | 15篇 |
2005年 | 21篇 |
2004年 | 19篇 |
2003年 | 8篇 |
2002年 | 15篇 |
2001年 | 12篇 |
2000年 | 9篇 |
1999年 | 4篇 |
1998年 | 5篇 |
1997年 | 5篇 |
1996年 | 5篇 |
1995年 | 2篇 |
1994年 | 5篇 |
1993年 | 6篇 |
1992年 | 7篇 |
1991年 | 3篇 |
1990年 | 5篇 |
1989年 | 7篇 |
1987年 | 5篇 |
1986年 | 5篇 |
1985年 | 4篇 |
1983年 | 3篇 |
1982年 | 4篇 |
1981年 | 5篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1977年 | 2篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1972年 | 3篇 |
1969年 | 2篇 |
1968年 | 3篇 |
1967年 | 1篇 |
1957年 | 2篇 |
排序方式: 共有581条查询结果,搜索用时 140 毫秒
1.
2.
3.
Tseng SC Arcand JL Brugger JM Finn M Olson AJ Somers S 《Library resources & technical services》1990,34(2):139-157
Serials, one of the more complicated areas of library technical endeavors, has lacked the benefit of standards for a long time. Even now, with standards beginning to be available, the majority of institutions are not working within standard serials formats. A survey to determine the use of serials standards in libraries was conducted in 1988 by the American Library Association, Resources and Technical Services Division, Serials Section, Committee to Study Serials Standards. In the spring of 1988 a survey was sent to a group encompassing the Association of Research Libraries members, CONSER participants, United States Newspaper Program participants, Microform Project libraries, and some vendors and librarians who attended the Committee meetings on a regular basis. The survey questionnaire assessed the current level of serials standards awareness of librarians and vendors. Topics included the type of serials systems used, standards relevant to serials control and union listing and whether or not they are implemented, types and levels of training staff received in the application of standards, benefits of the standards, and areas where standards are most needed. 相似文献
4.
5.
Dian Olson Belanger 《Journal of Government Information》2004,30(4):482-489
When 1 July 1957 “dawned” in the dark of the south polar night, Americans at seven scientific stations scattered across Antarctica officially began systematic, synoptic observations of the air above and ice below. Joining scientists from 11 other countries on the polar continent, they were part of the International Geophysical Year, an 18-month worldwide effort to understand the earth and its environment. The Navy and other military services provided the transportation, construction, and maintenance to make life and work possible on the ice. The scientific success and value of the IGY inspired a mechanism—the Antarctic Treaty of 1959—for a peaceful future focused on the cooperative pursuit of scientific knowledge. While imperfect and fragile, the treaty is still in force and, with continuing military and civilian support, scientific research in Antarctica prospers. All this was achieved in a remarkably short time, by disparate, thinly acquainted, mutually wary cultures—military, scientific, and diplomatic. All the more astonishing is that it happened within the tense context of the Cold War, as statesmen and warriors were wise enough to allow “apolitical” scientists to lead where they could not. 相似文献
6.
科技信息的开放获取已成为影响学术信息交流与科学发展的重大问题,深刻地影响到科技政策、科技支撑环境发展战略和科技信息服务模式。一大批科学家、科研机构和许多国家的科学管理与科研资助机构,都积极地推动科技信息的开放获取。他们或者制定开放获取政策、要求或鼓励科研人员提供科研成果的开放获取,或者支持开放出版期刊,或者建立机构开放存储库、支持本机构科研成果开放获取。通过这一系列的措施,科学界希望能够促进科研成果不受限制地广泛传播和自由获取、以及促进科研成果通过公共机制长期可靠保存和利用,以保障科技知识资产的国家保护和科研机构的知识资产管理。 相似文献
7.
Informed by the latest research on how people learn, effective teachers address both aspects of the teaching–learning equation—they engage students in the course material by implementing best teaching practices and they prepare students for learning by sharing best learning practices. The purpose of this study was to evaluate the impact of student‐centered learning practices on students’ perceptions of their ability to learn, specifically in a large enrollment, introductory food science and human nutrition course. Featured student‐centered learning practices included required assignments, optional study tools, and supplemental learning resources. A mixed method survey instrument with 5‐point Likert scales and qualitative, open‐ended questions was used to determine students’ (1) use of optional study tools and supplemental learning resources; (2) perceptions as to the quality and impact of required assignments, optional study tools, and supplemental learning resources to enhance their ability to learn; (3) perceptions as to the usefulness of required assignments, optional study tools, and supplemental learning resources to help them perform better in this course; and (4) overall satisfaction, as a learner, in this course. Overall, students identified study guides (developed using Bloom's taxonomy action verbs) (Mean = 4.34), microthemes (Mean = 4.27), and quizzes (Mean = 4.11) as the most beneficial resources to enhance their learning of the course material. Overall, 85% of students said they were extremely or very satisfied as learners in the course and nearly 75% of the students said the student‐centered learning practices should be offered to future FSHN 101 students. 相似文献
8.
9.
Olson Joanne K. Cox-Petersen Anne M. McComas William F. 《Journal of Science Teacher Education》2001,12(3):155-173
Journal of Science Teacher Education - 相似文献
10.
This study describes one teacher's use of multimedia, specifically CD-ROM talking books, in the classroom. The goal of the investigation was to reveal and analyse how a primary (Grade 3) teacher integrated CD-ROM books into her curriculum. Issues emerging from the study included how features of the software interact with features of classrooms, how patterns of instruction are affected by the infusion of technology, and how students interact with the software, and each other, while reading the CD- ROM books 相似文献