首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   341篇
  免费   8篇
教育   244篇
科学研究   56篇
体育   23篇
文化理论   1篇
信息传播   25篇
  2023年   4篇
  2022年   4篇
  2021年   3篇
  2020年   13篇
  2019年   10篇
  2018年   10篇
  2017年   20篇
  2016年   11篇
  2015年   5篇
  2014年   13篇
  2013年   60篇
  2012年   9篇
  2011年   7篇
  2010年   13篇
  2009年   6篇
  2008年   7篇
  2007年   5篇
  2006年   7篇
  2005年   5篇
  2004年   7篇
  2003年   12篇
  2002年   16篇
  2001年   8篇
  2000年   4篇
  1999年   7篇
  1998年   2篇
  1997年   3篇
  1996年   4篇
  1995年   4篇
  1994年   4篇
  1993年   4篇
  1992年   2篇
  1991年   4篇
  1988年   4篇
  1985年   4篇
  1983年   3篇
  1982年   4篇
  1981年   2篇
  1980年   2篇
  1979年   2篇
  1973年   4篇
  1968年   2篇
  1966年   2篇
  1925年   1篇
  1923年   1篇
  1922年   2篇
  1920年   1篇
  1899年   1篇
  1897年   2篇
  1850年   1篇
排序方式: 共有349条查询结果,搜索用时 31 毫秒
121.
Herman M 《Child development》2004,75(3):730-748
This paper categorizes multiracial youth (N=1,496) ages 14 to 19 and compares them with each other and with monoracial youth on identity development measures. The multiracial categories used here are derived from youths' reports of their own and their parents' race(s). Comparisons are made within groups of multiracial respondents who make different choices among single-race categories. Results show differences between subgroups in strength and importance of ethnic identity, self-esteem, and perceptions of ethnic discrimination. Multinomial logistic regression shows further that physiognomy, ethnic identity, and race of coresident parent(s) are significantly associated with reported race. Also related to racial identification among part-Hispanic youth are the racial distribution and socioeconomic status of their neighborhoods and the racial distributions of their schools.  相似文献   
122.
Inspired by Burton Clark's “triangle of coor‐dination” whereby a university is steered according to its relationship to “state authority”, the “academic oligarchy”, and the “market”, the author analyses the debate going on in Austrian higher education circles today about the proper way for the universities of the country to be steered. The general proposal is to supersede the University Organization Act of 1975, which had really been a reformulation of the traditional ministerial bureaucratic centralism typical of Austrian university governance, in favour of market‐oriented and decentralized approaches with many of the functions of the Ministry of Science and Research to be handed over to a buffer organization to be created. The chances are, however, that fundamentally very little of current practice will be changed because of the strength of set patterns and because of the inner contradictions within the principal reform proposals.  相似文献   
123.
The assertion that general reform-based science teaching practices (GRBSTPs) can facilitate nature of science (NOS) instruction has been mentioned in the literature, but rigorous and transparent empirical substantiation for this claim has not been made. This investigation empirically demonstrates an association between thirteen experienced teachers’ NOS implementation practices and their GRBSTPs. While effectively implementing GRBSTPs does not ensure the NOS will be taught, the findings show that these practices are associated with high levels of NOS instruction. In this study, teachers who implemented higher levels of reform-based practices were also observed to enact more instances of planned and spontaneous effective NOS instruction. Furthermore, these teachers were more likely to recognize and capitalize on NOS teaching opportunities when they unexpectedly arose in the context of their GRBSTPs. Just as NOS understanding must be assessed when determining factors associated with teachers’ NOS implementation, teachers’ GRBSTPs should also be empirically and transparently established to ensure they do not mask or confound other factors associated with NOS implementation.  相似文献   
124.
Abstract

This article investigates the effect of the raters' perception of a given topic on students' writing scores. Three raters, who were teachers in TEFL with backgrounds in teaching essay and letter writing in English, scored the compositions. The means of the three sets of scores by three raters were compared using the two-way analysis of variance (ANOVA). Concerning the hypothesis of the study that states “raters' perception has no effect on writers' composition scores,” the result of ANOVA was nonsignificant, meaning that there are other factors such as students' attitude and cognitive ability that may affect raters' judgments on student writing performance.  相似文献   
125.
In the course of empirical educational research, there is an increasingly broad approach to inter-disciplinary contributions to academic questions related to the processes of institutionalised teaching and learning and their effects. By reference to a multi-level structure, inter-disciplinary studies are presented which focus on continuing education, the level of participation in continuing education and the effects of continuing education. A particular concern is to review approaches to research which are methodically designed to generalise findings about the effects of continuing education. Using monitoring studies as a starting point, economic and sociological education studies are considered which have their empirical basis in large-scale data records; the evaluation of in-service training courses in business enterprises is a branch of research which has been used, especially in the meta-analysis of smaller evaluation studies, to develop models of the effectiveness of company in-service training. To supplement these approaches which consider the effects of continuing education especially in the context of paid employment, the discussion also examines further social benefits of continuing education and various approaches to teaching and learning research. Finally, the current state of the research is then discussed in order to examine the implications for research strategy.  相似文献   
126.
Useful Bookshops     
Alphons Silberman, Handwörterbuch der Massenkommunikation und Medienforschung [CONCISE DICTIONARY OF MASS COMMUNICATION AND MEDIA RESEARCH] (Berlin: Spiess, 1982, 506 pp. in 2 vols.—DM 48,).

Jens A. Hertwig &; Oswald Schbberl Publizistik und Kommunikationswissenschaft: Forschungsdokumentation 1978-1980 [SCIENCE OF PUBLIC COMMUNICATION AND COMMUNICATION SCIENCE: DOCUMENTATION OF RESEARCH 1978-1980] (Bonn: Informationszentrum Sozialwissenschaften 1982. 375 pp.—DM 48,- Address: Lennestr. 50, D-5300 Bonn 1).

[BIBLIOGRAPHY OF AUSTRIAN MASS COMMUNICATION LITERATURE 1981]. (Vienna: osterreichisches Dokumentationszentrum fur Medien - und Kommunikationsforschung ADMAC 1982. XVI, 238 pp. —OS 150.- Address: Universitatsstr. 7, A-1010 Wien).

Franz Josef Eilers CHRISTIAN COMMUNICATION DIRECTORY ASIA Communicatio socialis. Beiheft 9. (Paderborn: Scii6ningh 1982. 1,036 pp.—DM 57,-).

Medien-Gesamtkonzeption. Bericht der Expertenkom mission fur eine Medien-Gesam tkonzep don [GLOBAL CONCEPTION OF THE MEDIA: REPORT OF THE COMMISSION OF EXPERTS ON A GLOBAL CONCEPTION OF THE MEDIA] (Bern: Eidgenossisches Justiz-und Polizeidepartement 1982. LXI, 703 pp.—free on request from: Eidgen6ssische Drucksachen-und Materialzentrale, CH-3000 Bern).

Dieter Breun, Geschichte der literarischen Zensur in Deutschland [HISTORY OF LITERARY CENSORSHIP IN GERMANY] Uni-TaschenbUcher. 1208. (Heidelberg: Quelle &; Meyer 1982. 264 pp.—DM 26,80).

Klaus Wernecke &; Peter Heller, Der vergessene Führer: Alfred Hugenberg, Pressemacht und Nationalsozialismus [THE FORGOTTEN LEADER: ALFRED HUGENBERG, PRESS POWER AND NAZISM] (Hamburg: VSA-Verl. 1982. 231 pp.—DM 19,80).

Rudiger Liedtke, Die verschenkte Presse: Die Geschichte der Lizensierung von Zeitungen Hach 1945 [THE PRESS GIVEN AWAY: THE HISTORY OF PRESS LICENSING AFTER 1945] VAS. 14. (Berlin: Verl. rtir Studium und Ausbildung in der Elefanten Press 1982. 240 pp.—DM 24,80. Publisher's address: Zossener Str. 32, D-1000, Berlin 31).

Peter Brummond &; Peter Schwindt, Der Pressmark in der Bundesrepublik Deutschland: Oiratliche Aufgabe und privatwirtschaftliche Organisation der Presse [THE PRESS MARKET IN THE FRG: PUBITC- RESPONSIBILITY AND PRIVATE INDUSTRY OF THE PRESS].

Heinz-Willi Gross, Die Deutsche Presse-Agentur: Historische Analyse ihrer Organisations - und Machstruktur, externer Interessenverflechtungen und der Position auf dem bundesdeutschen Nachrichtenmarkt [THE GERMAN PRESS-AGENCY: HISTORICAL ANALYSIS OF ITS ORGANIZATION, ITS STRUCTURE OF POWER, THE COMPLEXITY OF EXTERNAL INTERESTS AND THE POSITION ON THE GERMAN MARKET OF NEWS] (Frankfurt: Haag Herchen 1982. 260 pp.—DM 26,80).

Christine B. Koerner, Entwicklung und Konzeption der Presse in Albanien und der albanesischen Exilpress [DEVELOPMENT AND CONCEPTION OF THE PRESS IN ALBANIA AND OF THE ALBANIAN EXILE PRESS]. Albanische Forschungen. Bd. 22. (Munchen: Trofenik 1982. XI, 534 pp.—DM 88,-).

Manfred Hagen, Die Entfaltungpolitischer Öffentlichkeit in Russland 1906-1914 [THE DEVELOPMENT OF POLITICAL PUBLIC IN RUSSIA] = Quellen und Studien zur Geschichte des 15stlichen Europa. 18. (Wiesbaden: Steiner 1982. X, 402 pp.— DM 90,-).

Hans J. Kleinstuber, Rundfunkpolitik in der Bundesrepublik: Der Kampf urn die Macht Aber HeSrfunk und Fernsehen [BROADCASTING POLITICS IN THE FEDERAL REPUBLIC: THE QUARREL ABOUT THE CONTROL OF RADIO AND TV]. = Reihe Analysen. 32. (Opladen: Leske &; Budrich 1982. 184 pp.—DM 16,80).

Friedrich Kübler, Medienverfleichtung: Eine rechtsvergleichende Untersuchung der Marktstrukturprobleme privaten Rundunks [MEDIA CONCENTRATION: A COMPARATIVE LEGAL STUDY OF THE PROBLEMS OF THE MARKET STRUCTURE OF PRIVATE BROADCASTING] Beitrhe zum Rundf unkrecht. 26. (Frankfurt: Metzner 1982. 109pp.—DM 35,-).

Franz Ronneberger with Ulla Meister &; Manuela Reith, Neue Medien: Vorteile und Risiken fir die Struktur der demokratischen Gesellschaft und den Zusammenhalt der sozialen Gruppen. Eine Literaturstudie [NEW MEDIA: FAVOURS AND RISKS FOR THE STRUCTURE OF DEMOCRATIC SOCIETY AND THE UNITY OF SOCIAL GROUPS] Schriften der Deutschen Gesellschaft fur COMNET. 1. (Konstanz: Universiatsverlag Konstanz 1982. 133 pp.—DM 38,-).

Michael Geisler, Die literarische Reportage in Deutschland: Möglichkeiten and Grenzen eines operativen Genres [THE LITERARY REPORT IN GERMANY: POSSIBILITIES AND LIMITATIONS OF A WORKING GENRE] Mongraphien Literaturwissenschaft. 53. (KOnigstein: Scriptor 1982. X, 428 pp.—DM 49,80).

Kristina Zerges, Sozialdemokratische Press und Literatur: Empirische Untersuchung zur Literaturvermittlung in der sozialdemokrati-Presse 1876 bis 1933 [SOCIAL-DEMOCRATIC PRESS AND LITERATURE: AN EMPIRICAL STUDY ON LITERATURE IN THE SOCIAL-DEMOCRATIC PRESS FROM 1876 to 1933](Stuttgart: Metzler 1982. IX, 319 pp.—DM 58,-).

Erich Strassner, Fernsehnachrichten: Eine Produktions-, Produkt- und Rezeptionsanalyse [TELEVISION NEWS: AN ANALYSIS OF PRODUCTION, PRODUCT AND RECEPTION] Medien in Forschung und Unterricht. Ser. A., Bd. 3. (Tilbingen: Niemeyer 1982. XIII, 531 pp.—DM 128,-).

Andreas-Rudolf Wosnitza, Fernsehnachrichten fur Kinder: Eine kritische Bestandsaufnahme [TELEVISION NEWS FOR CHILDREN: A CRITICAL SURVEY] (Frankfurt: R.G. Fischer 1982. VIII, 274 pp.—DM 29,80).

Sabine Jörg, ed., Spaß für Millionen: Wie unterhält uns das Fernsehen? [AMUSEMENT FOR MILLION&; HOW DOES TELEVISION ENTERTAIN US?] (Berlin: Spiess, 1982. 178 pp.-DM 19,80).

Petra S. Hartmann-Laugs &; A. John Goss, Unterhaltung und Politik im Abendprogramm des DDRFernsehens [ENTERTAINMENT AND POLITICS IN THE NIGHTLY PROGRAM OF TELEVISION OF THE GERMAN DEMOCRATIC REPUBLIC] Bibliothek Wissenschaft und Politik. 29. (KlIn: Verlag Wissenschaft und Politik 1982. 238 pp.-DM 24,-).

Günter Bentele &; Robert Ruoff [HOW OBJECTIVE ARE OUR MEDIA?) Fischer Taschenbuch. 4228. (Frankfur Fischer 1982. 335 pp.-DM 14,80).

Klaus Berg &; Marie-Luise Kiefer [MASS COMMUNICATION 2: A PANEL STUDY OF MEDIA USE AND GRATIFICATION 1964-1980] Sci enreihe Media Perspektiven. 2. (Frankfurt: Me ner 1982. 237 pp.-DM 19,80).

Horst 0. Walker [THE PRESS- AND INFORMATION OFFICE OF THE FEDERAL GOVERNMENT: A STUDY ON PROBLEMS OF ORGANIZATION, COORDINATION AND CONTROL OF THE PRESS- AND PR WORK OF THE FEDERAL GOVERNMENT] (Frankfurt: Haag &; Herchen, 1982. 455 pp.-DM 58,-).

Heinz-Dietrich Fischer Auslandskorrespondenten in der Bundesrepublik Deutschland: Status, Aufgaben, Arbeitsprobleme professioneller Presseberichterstatter aus Bonn [FOREIGN CORRESPONDENTS IN THE FRG: STATUS, TASKS, PROBLEMS OF WORK OF PROFESSIONAL PRESS REPORTERS FROM BONN] Journalismus. N. F. 16. (Dusseldorf: Droste 1982, 270 pp.—DM 68,-).  相似文献   
127.
Computer History     
FROM ENIAC TO UNIVAC: AN APPRAISAL OF THE ECKERT-MAUCHLY COMPUTERS by Nancy Stern (1981, 286 pp.—$25.00).

EARLY BRITISH COMPUTERS by Simon Lavington (1980, 139 pp.—$9.00, paper).

PROJECT WHIRLWIND: THE HISTORY OF A PIONEER COMPUTER by Kent C. Redmond and Thomas M. Smith (1980, 280 pp.—$25.00).

HERMAN HOLLERITH: FORGOTTEN GIANT OF INFORMATION PROCESSING by Geoffrey D. Austrian (originally published by Columbia University Press in New York: 1982. 418 pp.-819.95).

THE COMPUTER FROM PASCAL TO VON NEUMANN by Herman H. Goldstine (originally published by Princeton University Press in 1972, and also available since 1980 in paperback, 378 pp.—$25.00).

RECKONERS: THE PREHISTORY OF THE DIGITAL COMPUTER, FROM RELAYS TO THE STORED PROGRAM CONCEPT, 1935-1945, by Paul E. Ceruzzi (Westport, Connecticut: Greenwood Press, 1963— $29.95).  相似文献   
128.
This article surveys the frontiers where speech, assembly, and the right to be silent meet the law in terms of philosophy of free speech of the United States Supreme Court, constitutional law, tort law, rights in intellectual property, and academic and corporate use of parliamentary law.  相似文献   
129.
130.
Background:During an experiment,a ski racer equipped with various measurement devices suffered an anterior cruciate ligament(ACL)rupture in his right knee.The aim of this study was to describe the underlying injury mechanism from a functional perspective.Methods:Eight giant slalom turns(i.e.,4 left turns),followed by 1 left turn at which the ACL injury occurred,were recorded by 2 video cameras,electromyography of 4 relevant muscle groups,inertial measurement units to measure knee and hip angles,and pressure insoles to determine ground reaction forces.Results:Due to a loss of balance,the ski racer began to slide sideways at the apex of a left turn.During sliding,his right(outside)leg was actively abducted upward without touching the ground.The ski racer then attempted to stand up again by dropping his leg back towards the snow surface.The end of this dropping was accompanied by a decrease in electromyographic activity in the knee stabilizing muscles.Once the inside edge of the outer ski caught the snow surface,a rapidly increasing peak force,knee flexion,and an aggressive sudden activation of the vastus medialis muscle were observed,while biceps femoris and rectus femoris further decreased their activation levels.This likely resulted in excessive anterior translation of the tibia relative to the femur,causing damage to the ACL.Conclusion:Our example emphasizes that ski racers should not get up until they stop sliding.Remember:“When you’re down,stay down.”  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号