全文获取类型
收费全文 | 1277篇 |
免费 | 31篇 |
国内免费 | 4篇 |
专业分类
教育 | 970篇 |
科学研究 | 86篇 |
各国文化 | 26篇 |
体育 | 79篇 |
综合类 | 1篇 |
文化理论 | 17篇 |
信息传播 | 133篇 |
出版年
2022年 | 7篇 |
2021年 | 18篇 |
2020年 | 14篇 |
2019年 | 24篇 |
2018年 | 42篇 |
2017年 | 34篇 |
2016年 | 50篇 |
2015年 | 21篇 |
2014年 | 46篇 |
2013年 | 338篇 |
2012年 | 17篇 |
2011年 | 29篇 |
2010年 | 21篇 |
2009年 | 27篇 |
2008年 | 38篇 |
2007年 | 33篇 |
2006年 | 29篇 |
2005年 | 26篇 |
2004年 | 19篇 |
2003年 | 19篇 |
2002年 | 23篇 |
2001年 | 12篇 |
2000年 | 13篇 |
1999年 | 16篇 |
1998年 | 13篇 |
1997年 | 19篇 |
1996年 | 13篇 |
1995年 | 15篇 |
1994年 | 14篇 |
1993年 | 16篇 |
1992年 | 10篇 |
1991年 | 14篇 |
1990年 | 10篇 |
1989年 | 13篇 |
1988年 | 9篇 |
1987年 | 7篇 |
1985年 | 15篇 |
1984年 | 9篇 |
1983年 | 20篇 |
1982年 | 16篇 |
1981年 | 10篇 |
1980年 | 8篇 |
1979年 | 17篇 |
1978年 | 12篇 |
1977年 | 9篇 |
1975年 | 7篇 |
1974年 | 13篇 |
1973年 | 10篇 |
1972年 | 8篇 |
1965年 | 6篇 |
排序方式: 共有1312条查询结果,搜索用时 31 毫秒
1.
Frank Quinn 《Publishing Research Quarterly》1995,11(2):20-28
This article begins with an analysis of reliability and usability in the mathematical literature. Mathematical practice is
seen to be adapted to very high standards in these respects, and quite sensitive to even modest declines in quality. Unfortunately
most scenarios for the transition to electronic publication suggest serious loss of quality. This is a problem special to
mathematics: other sciences are adapted to lower standards, and should be much less sensitive to changes. Some ways to prevent
this decline are suggested.
A condensed version of this article appeared inNotices of the American Mathematical Society, 42, 1, January 1995. Published with permission of the American Mathematical Society. 相似文献
2.
3.
4.
Laura Jacobs Alyt Damstra Mark Boukes Knut De Swert 《Mass Communication and Society》2018,21(4):473-497
Although prior studies investigating immigration news typically documented a dominant focus on negativity and threats, only limited empirical research is available, which scrutinizes the way real-world developments affect these patterns in immigration news. This study aims to fill this void. First, we report results of a large-scale and longitudinal content analysis (N = 4,340,757) of trends in immigration news coverage in two Western European cases, Flanders (the northern, Dutch-speaking, largest region of Belgium) and the Netherlands, from 1999 to 2015. Both the salience of immigration as a news topic on itself and its linkages with three prominent issues (i.e., crime, terrorism, and socioeconomic issues) are explored. Second, this study builds on previous insights by comparing dynamics in immigration news to real-world events and developments. Overall, the results show that the linkage of immigration to issues of crime, terrorism, and the economy in Flemish and Dutch newspapers was considerable throughout the 17-year period under study. Yet there is limited evidence for a close relationship between news and real-life developments; hence, trends in immigration news seem largely unaffected by trends in society. 相似文献
5.
6.
7.
David Alan George Poh-Ling Tan Jeffrey Frank Clewett 《Environmental Education Research》2016,22(1):62-88
Using a participatory learning approach, we report on the delivery and evaluation of a climate change and risk assessment tool to help manage water risks within the agricultural sector. Post-graduate water-professional students from a range of countries, from both developed and emerging economies were involved in using this tool. Our approach included participative learning tools – group discussion, software, and risk matrices. The materials developed met the needs of the students, allowing these students to incorporate their learning and adapt the package of materials for use in their home countries. Analysis of evaluations show that the tools and materials are particularly useful and emphasizes the need for sound learning materials and tools, funding to deliver training, and policy support to accelerate education and adoption of authentic climate change adaptation practices. The expected benefits for water professionals about climate change will be translated into improved socioeconomic and environmental outcomes if adopted. 相似文献
8.
Frank P. Belcastro 《Roeper Review》2013,35(3):184-189
This article responds to attitudes about giftedness in M. Sapon‐Shevin's article, “Explaining Giftedness to Parents: Why it Matters What Professionals Say.” Giftedness is not a reward or a privilege, but an aspect of a child's individuality that should be understood and taken into account by the educational system. Gifted children's needs are not solely academic, and it is parents who are responsible for meeting those needs. They need information from as many sources as possible. They are also excellent sources of information themselves, so the relationship between professionals and parents should be reciprocal. This article also responds to some of Sapon‐Shevin's objections to the book Guiding the Gifted Child, (Webb, Meckstroth, Tolan, 1982). In the preparation of this article, the writer worked closely with coauthors James T. Webb and Elizabeth Meckstroth, whose pioneering work with the SENG Project at Wright State University provided the basis of Guiding the Gifted Child. 相似文献
9.
10.