全文获取类型
收费全文 | 1261篇 |
免费 | 6篇 |
国内免费 | 1篇 |
专业分类
教育 | 844篇 |
科学研究 | 148篇 |
各国文化 | 22篇 |
体育 | 88篇 |
综合类 | 1篇 |
文化理论 | 33篇 |
信息传播 | 132篇 |
出版年
2020年 | 9篇 |
2019年 | 24篇 |
2018年 | 34篇 |
2017年 | 26篇 |
2016年 | 18篇 |
2015年 | 17篇 |
2014年 | 15篇 |
2013年 | 343篇 |
2012年 | 16篇 |
2011年 | 33篇 |
2010年 | 16篇 |
2009年 | 24篇 |
2008年 | 29篇 |
2007年 | 26篇 |
2006年 | 15篇 |
2005年 | 15篇 |
2004年 | 23篇 |
2003年 | 14篇 |
2002年 | 15篇 |
2001年 | 16篇 |
2000年 | 12篇 |
1999年 | 16篇 |
1998年 | 11篇 |
1997年 | 11篇 |
1996年 | 14篇 |
1995年 | 17篇 |
1994年 | 17篇 |
1993年 | 21篇 |
1992年 | 18篇 |
1991年 | 13篇 |
1990年 | 14篇 |
1989年 | 8篇 |
1988年 | 10篇 |
1987年 | 16篇 |
1986年 | 18篇 |
1985年 | 12篇 |
1984年 | 12篇 |
1983年 | 10篇 |
1982年 | 12篇 |
1981年 | 11篇 |
1980年 | 14篇 |
1979年 | 16篇 |
1978年 | 14篇 |
1977年 | 18篇 |
1976年 | 17篇 |
1975年 | 10篇 |
1974年 | 16篇 |
1973年 | 11篇 |
1966年 | 9篇 |
1920年 | 8篇 |
排序方式: 共有1268条查询结果,搜索用时 0 毫秒
71.
Edward H. Spence 《Ethics and Information Technology》2009,11(4):243-253
Beginning with the initial premise that as the Internet has a global character, the paper will argue that the normative evaluation
of digital information on the Internet necessitates an evaluative model that is itself universal and global in character (I
agree, therefore, with Gorniak- Kocikowska’s claim that because of its global nature “computer ethics has to be regarded as
global ethics”. (Gorniak-Kocikowska, Science and Engineering Ethics, 1996). The paper will show that information has a dual normative structure that commits all disseminators of information to both
epistemological and ethical norms that are in principle universal and thus global in application. Based on this dual normative
characterization of information the paper will seek to demonstrate: (1) that information and internet information (interformation) specifically, as a process and product of communication, has an inherent normative structure that commits its producers,
disseminators, communicators and users, everyone in fact that deals with information, to certain mandatory epistemological
and ethical commitments; and (2) that the negligent or purposeful abuse of information in violation of the epistemological
and ethical commitments to which its inherent normative structure gives rise is also a violation of universal rights to freedom
and wellbeing to which all agents are entitled by virtue of being agents, and in particular informational agents. 相似文献
72.
Is earlier intervention always superior? Using two complementary forms of meta-analysis, Gardner and colleagues find no support for the “earlier is better” hypothesis in outcomes of parenting programs for child behavior problems across the 2–11 year age range. This commentary explores possible methodological and substantive reasons for the pattern of their findings. We need additional careful analyses of this kind, assessing age variations in intervention effects across broader age ranges, and in other developmental domains, for strong tests of the “earlier is better” hypothesis. At this stage, however, Gardner et al.'s findings give us some pause for thought. 相似文献
73.
Edward Saibel 《Journal of The Franklin Institute》1944,238(2):107-110
74.
John Sandford Eugene Pons Hans Brack Olaf Rydbeck Edward W. Ploman Bruno Vasari 《Communication Booknotes Quarterly》2013,44(6):66-68
John Sandford's The Mass Media of the German-Speaking Countries (London: Oswald Wolff; and Ames: Iowa State University Press, 1976---price not given, paper) Publizistik. Vierteljahreshefte fur Kommunikationsforschung (= subtitle, meaning Quarterly for Communication Research) Rundfunk und Fernsehen (Broadcasting and Television) Femselsen und Bildung (Television and Education) Communicatio Socialis Broadcast Receiving Fees in France, by Eugene Pons (EBU Monograph No. 7, 194 pp., 1969, 20 Swiss francs or about $5.00, paper) German Radio and Television: Organization and Economic Basis, by Hans Brack (EBU Monograph No. 6, 68 pp., 1968, 8 Sw. Fr. or about $2.00, paper) Broadcasting in the Space Age, by Olaf Rydbeck and Edward W. Ploman (EBU Monograph No. 5, 53 pp., 8 Sw. Fr. or about $2.00, paper) Advertising on Radio and Television (EBU Monograph No. 4, 37 pp., 1966, 5 Sw. Fr. or about $1.00) Financial Aspects of Broadcasting, by Bruno Vasari (EBU Monograph No. 3, 45 pp., 1965, 4 Sw. Fr. or a bit less than $1.00, paper) Television for Children and Young People, by J.D. Halloran and P.R.C. Elliott (134 pp., 1970, 10 Sw. Fr. or about $2.50, paper) Annual Seminar for Producers and Directors of Adult Education by Television (12th Seminar, 1974, 79 pp., 5 Sw. Fr. or about $1.00) Annual Seminar for Producers and Directors of School Television (11th Seminar, 1973, 79 pp., 5 Sw. Fr. or about $1.00, paper) Workshops for Producers and Directors of Television Programs for Children (4th Workshop, 1974, 48 pp., 8 Sw. Fr. or about $2.00, paper) International Forum of Light Music in Radio (1971, 1973, and 1975 editions available, 5 Sw. Fr. each or about $1.00 each, paper) The Evolution of the EBU through its Statutes from 1950 to 1976 (EBU Monograph No. 11, 1977, 25 Sw. Fr. or something over $5.00, paper) International Conference of States on the Protection of Phonograms (Paris: Unesco; and New York: Unipub, 1975---$34.75, paper) 相似文献
75.
Daniel N. Lapedes James W. Brown Henry Geller Edward M. Dickson Raymond Bowers Martin H. Seiden 《Communication Booknotes Quarterly》2013,44(5):59-63
Robert C. Toll's On with the Show: The First Century of Show Business in America (New York: Oxford University Press, 1976---$19.95) Edwin Fisher, et al., eds. The Art in Cartooning: Seventy-five Years of American Magazine Cartoons (New York : Scribner's, 1975---$14.95) Vaughncille Molden's Telecommunications and Black Americans: A Survey of Ownership, Participation and Control (Center for Development Technology and Program in Technology and Human Affairs, Washington University, St. Louis, Mo. 63130-48.50, paper) Working Papers in Culture and Communication (Department of Anthropology, Temple University, Philadelphia, Pa. 19122-- $2.00, paper) 相似文献
77.
78.
79.
Helen Jeffries Martin Stanisstreet Edward Boyes 《Research in Science & Technological Education》2013,31(2):205-221
The prevalence of the ideas of Year I undergraduate biology students about the consequences, causes and cures of the 'greenhouse effect' was determined using a closed-form questionnaire, and the results compared with a parallel study undertaken nearly 10 years ago. Many of the students in the present study were unaware of the potential effect of global warming on the distribution of crop pests, or that ground level ozone acts as a 'greenhouse gas'. Prevalent misconceptions were that global warming is caused by increased penetration of solar radiation, that it is connected with holes in the ozone layer, that it would result in increased skin cancer, and that use of unleaded petrol would reduce it. There appeared to be a general conflation of thinking about global warming and ozone layer depletion. Despite an increased certainty about the existence and effects of global warming among experts, the results are broadly similar to, and certainly no better than, those obtained with an equivalent group of students in a previous study, suggesting that despite media publicity and inclusion of the issue of global warming in the formal curriculum, insecure knowledge and misconceptions persist. 相似文献
80.