全文获取类型
收费全文 | 22408篇 |
免费 | 321篇 |
国内免费 | 59篇 |
专业分类
教育 | 16173篇 |
科学研究 | 1902篇 |
各国文化 | 215篇 |
体育 | 1712篇 |
综合类 | 44篇 |
文化理论 | 105篇 |
信息传播 | 2637篇 |
出版年
2021年 | 242篇 |
2020年 | 324篇 |
2019年 | 492篇 |
2018年 | 663篇 |
2017年 | 719篇 |
2016年 | 657篇 |
2015年 | 422篇 |
2014年 | 588篇 |
2013年 | 4390篇 |
2012年 | 575篇 |
2011年 | 592篇 |
2010年 | 520篇 |
2009年 | 511篇 |
2008年 | 544篇 |
2007年 | 514篇 |
2006年 | 510篇 |
2005年 | 450篇 |
2004年 | 329篇 |
2003年 | 322篇 |
2002年 | 310篇 |
2001年 | 466篇 |
2000年 | 409篇 |
1999年 | 357篇 |
1998年 | 204篇 |
1997年 | 198篇 |
1996年 | 225篇 |
1995年 | 197篇 |
1994年 | 204篇 |
1993年 | 185篇 |
1992年 | 310篇 |
1991年 | 290篇 |
1990年 | 309篇 |
1989年 | 311篇 |
1988年 | 244篇 |
1987年 | 247篇 |
1986年 | 254篇 |
1985年 | 257篇 |
1984年 | 243篇 |
1983年 | 235篇 |
1982年 | 204篇 |
1981年 | 187篇 |
1980年 | 191篇 |
1979年 | 255篇 |
1978年 | 225篇 |
1977年 | 162篇 |
1976年 | 172篇 |
1975年 | 141篇 |
1974年 | 142篇 |
1973年 | 142篇 |
1971年 | 139篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
Sports Engineering - A Monark cycle ergometer is a device globally used in physiological studies to measure the work and energy levels of exercising humans. In this paper a rope-braked cycle... 相似文献
13.
G L Zellman 《Child abuse & neglect》1992,16(1):57-74
Drawing distinctions on the basis of at least some case characteristics in making reporting decisions makes considerable sense. Using data from a national survey of mandated reporters that included vignettes in which case and personal characteristics were systematically varied, this paper examines the impact of selected characteristics while controlling for others. The data reveal that respondents noticed and responded to case characteristics. Abuse-relevant judgments and reporting intentions varied, often substantially, as a function of case characteristics. Three case characteristics--previous abuse, severity of abuse, and recantation--were powerful predictors of vignette outcomes. A history of previous abuse led to judgments of greater seriousness, a more salutary impact of a report, and greater likelihood of reporting. More severe abuse was more likely to be labelled as abuse, and was more likely to be reported. When the alleged victim retracted her accusation upon questioning by an authority figure, respondents were significantly less likely to intend a report. Child age, perpetrator intent and family socioeconomic status also influenced abuse-relevant judgments and reporting intentions. Respondents were more likely to intend a report when younger children, lazy or angry perpetrators and children from poorer families were portrayed. 相似文献
14.
15.
Stephen T. Kerr 《Publishing Research Quarterly》1992,8(4):33-43
In order to determine the potential of alternative technologies in social studies education, we must understand the goals
of such education, the capabilities of the technologies, and teachers’ and students’ responses to new technologies. The author
suggests that the new technologies can contribute to the goals of learning about the past, learning about democratic life
and institutions, and making students knowledgeable as consumers and producers of information. One major obstacle is a lack
of time and money for teachers to experiment with the technologies.
Stephen T. Kerr is professor of education in the College of Education at the University of Washington. His research focuses
on the application of new technologies in schools and other educational environments, and particularly on the ways in which
technology affects the social structure (roles and expectations, instructional patterns, organization) of those institutions.
He has done work on human-computer interaction, as well as on how new communication technologies have changed the educational
system of the former USSR. 相似文献
16.
How has Item Response Theory helped solve problems in the development and use of computer-adaptive tests? Do we need to balance item content with computer-adaptive tests? Could we use IRT to evaluate unusual responses to computer-delivered tests? 相似文献
17.
18.
Thomas L. Bonn 《Publishing Research Quarterly》1994,10(1):55-65
The role of the literary agent and the reception granted agents by publishers have changed markedly over the course of the
twentieth century. Henry Holt’s views of agents, written in the first decade of the century, help define the status and activities
of agents at that time. These are compared with the role of agents today, using archival sources, the book trade literature,
and interviews.
Thomas L. Bonn, review editor of this journal, is a librarian, Library at State University College at Cortland. He is the
author ofUnder Cover: An Illustrated History of American Mass Market Paperbacks andHeavy Traffic and High Culture: The New American Library as Literary Gatekeeper. He is working on a study of American literary agents. 相似文献
19.
20.
As a part of efforts to evaluate and monitor the increasing public investment in early childhood education, teachers are being asked to assess children's school readiness. In this study, preschool teachers and kindergarten teachers rated children's skills in three areas (kindergarten readiness, academic skills, and communication skills), and these ratings were compared with direct assessments of the children's skills. Ratings by both groups of teachers tended to be more highly related to basic skills, such as counting and number naming, than to abilities such as solving applied problems and using expressive and receptive vocabulary. Preschool teachers' ratings had a lower association with children's observed skills and abilities than kindergarten teachers' ratings. Ratings of children attending Head Start were systematically inflated, but this relationship was mediated to a significant extent by the teachers' levels of education. More educated teachers rated children in a manner consistent with the children's directly assessed skills. Implications of these findings for informing future efforts to assess school readiness by using teacher ratings are discussed. 相似文献