全文获取类型
收费全文 | 16220篇 |
免费 | 220篇 |
国内免费 | 8篇 |
专业分类
教育 | 11864篇 |
科学研究 | 1340篇 |
各国文化 | 100篇 |
体育 | 1383篇 |
综合类 | 8篇 |
文化理论 | 138篇 |
信息传播 | 1615篇 |
出版年
2022年 | 111篇 |
2021年 | 167篇 |
2020年 | 255篇 |
2019年 | 439篇 |
2018年 | 545篇 |
2017年 | 552篇 |
2016年 | 487篇 |
2015年 | 311篇 |
2014年 | 362篇 |
2013年 | 3087篇 |
2012年 | 376篇 |
2011年 | 424篇 |
2010年 | 281篇 |
2009年 | 248篇 |
2008年 | 351篇 |
2007年 | 263篇 |
2006年 | 335篇 |
2005年 | 226篇 |
2004年 | 201篇 |
2003年 | 197篇 |
2002年 | 229篇 |
2001年 | 334篇 |
2000年 | 299篇 |
1999年 | 271篇 |
1998年 | 139篇 |
1997年 | 164篇 |
1996年 | 181篇 |
1995年 | 186篇 |
1994年 | 147篇 |
1993年 | 175篇 |
1992年 | 242篇 |
1991年 | 219篇 |
1990年 | 220篇 |
1989年 | 248篇 |
1988年 | 246篇 |
1987年 | 213篇 |
1986年 | 213篇 |
1985年 | 221篇 |
1984年 | 193篇 |
1983年 | 230篇 |
1982年 | 172篇 |
1981年 | 167篇 |
1980年 | 163篇 |
1979年 | 237篇 |
1978年 | 188篇 |
1977年 | 169篇 |
1976年 | 153篇 |
1975年 | 130篇 |
1974年 | 121篇 |
1973年 | 128篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Stacy L. Young Manuel D. Pulido Catherine F. Brooks 《Communication Research Reports》2018,35(2):172-177
This study extends instructional communication research on extra-class communication (ECC) by presenting an integrative analysis comparing the explanatory utility of student- and instructor-oriented reasons for student engagement in frequent ECC. Results from 495 college students suggested that student-oriented reasons, specifically the relational and functional student motives, were the only significant, positive predictors of students’ perceptions of frequent ECC engagement. Other student motives (excuse making, participation, sycophancy) and perceptions of instructor approachability did not significantly predict perceived frequency of ECC engagement. 相似文献
72.
73.
Alberto González 《Communication Studies》2018,69(4):362-365
This reflection essay describes the Central States Region as an area rich in intercultural communication. González describes Mexican American migrant farmworker organizing as an intercultural activity since the union activists attempted to influence both Mexican heritage and European heritage audiences. González also describes the many interculturalists working in the Midwest who influenced his early research. 相似文献
74.
Flávia Gomes-Franco e Silva Juliana Colussi Paula Melani Rocha 《Journal of Radio & Audio Media》2018,25(1):77-91
This study was conducted in an environment of widespread use of social media and mobile applications in the mass media. The general goal of the study was to analyze the use of WhatsApp in cybermedia, specifically in radio. A case study was proposed to examine the use of WhatsApp on the program Las mañanas de RNE, broadcast by Spanish National Radio. It was found that the public was very accepting of the program’s initiative to solicit WhatsApp voice messages, beginning in November 2015. The case study used audio files of a direct broadcast that included specific times for audience participation. The use of WhatsApp was accepted by the audience, in addition to the use of the conventional telephone, as a tool well-suited to listener participation in radio programming. Finally, the study highlights the importance of interactive, participatory spaces in broadcasts through the creation of synergies with new forms of online participation. 相似文献
75.
This study investigates the convergence of two bibliometric approaches to the measurement of interdisciplinary research: one based on analyzing disciplinary diversity in the reference list of publications, the other based on the disciplinary diversity of authors of publications. In particular we measure the variety, balance, disparity and integrated diversity index of, respectively, single-author, multi-author single-field, and multi-author multi-field publications. We find that, in general, the diversity of the reference list grows with the number of fields reflected in a paper’s authors’ list and, to a lesser extent, with the number of authors being equal the number of fields. Further, we find that when fields belonging to different disciplines are reflected in the authors’ list, the disparity in the reference list is higher than in the case of fields belonging to the same discipline. However, this general tendency varies across disciplines, and noticeable exceptions are found at individual paper level. 相似文献
76.
David Ansong Sarah R. Eisensmith Rainier D. Masa Gina A. Chowa 《Psychology in the schools》2016,53(10):1057-1070
Self‐efficacy is a universal construct, but few validated measures exist for researchers in developing countries to use in assessing youths’ perceptions of their ability to achieve academic success. This study examined the cross‐cultural suitability and psychometric properties of an academic self‐efficacy scale (ASES) adapted for the Ghanaian context. ASES construct validity was assessed with a sample of 4,289 Ghanaian junior high‐school students and exploratory and confirmatory factor analysis. Invariance testing assessed the scale's measurement equivalence by gender and temporal stability of gender equivalence. The ASES is a valid, reliable one‐dimensional scale for assessing young Ghanaians’ perceptions of their academic capabilities, and it works equally well across genders. As adapted, ASES is a valid scale with utility for researchers examining predictors and effects of academic self‐efficacy. The ASES has important implications for decisions regarding investment in programs aimed at improving academic self‐efficacy of youth, both in sub‐Saharan Africa and the increasingly diverse American public schools. 相似文献
77.
Rebecca A. Battista Erin D Bouldin Karin A. Pfeiffer Christine E. Pacewicz Shannon R Siegel Eric M. Martin 《Measurement in physical education and exercise science》2021,25(1):43-52
ABSTRACT Participation in youth sport is positively associated with physical fitness and performance. The purpose of the current study was to examine if physical fitness measures during childhood and early adolescence predicted high school sport participation. Participants included youth in the Michigan State University Motor Performance Study. Measures consisted of the endurance shuttle run, Wells sit-and-reach, jump and reach, standing long jump, agility shuttle run and 30-yard dash. Individual, generalized estimating equation models were used to estimate the association between each measure and the odds of participating in high school sport. For both sexes, the endurance shuttle run and agility shuttle run were related to sport participation. For boys only, the long jump and 30-yard dash were also associated with sport participation. Better physical fitness and performance across several dimensions in childhood, including those related to motor skills, enhanced the likelihood of sport participation in high school. 相似文献
78.
79.
B. G. C. Maisonneuve T. Honegger J. Cordeiro O. Lecarme T. Thiry D. Fuard K. Berton E. Picard M. Zelsmann D. Peyrade 《Biomicrofluidics》2016,10(2)
With the rise of microfluidics for the past decade, there has come an ever more pressing need for a low-cost and rapid prototyping technology, especially for research and education purposes. In this article, we report a rapid prototyping process of chromed masks for various microfluidic applications. The process takes place out of a clean room, uses a commercially available video-projector, and can be completed in less than half an hour. We quantify the ranges of fields of view and of resolutions accessible through this video-projection system and report the fabrication of critical microfluidic components (junctions, straight channels, and curved channels). To exemplify the process, three common devices are produced using this method: a droplet generation device, a gradient generation device, and a neuro-engineering oriented device. The neuro-engineering oriented device is a compartmentalized microfluidic chip, and therefore, required the production and the precise alignment of two different masks. 相似文献
80.