全文获取类型
收费全文 | 23994篇 |
免费 | 283篇 |
国内免费 | 15篇 |
专业分类
教育 | 17067篇 |
科学研究 | 1957篇 |
各国文化 | 263篇 |
体育 | 2316篇 |
综合类 | 7篇 |
文化理论 | 234篇 |
信息传播 | 2448篇 |
出版年
2021年 | 236篇 |
2020年 | 364篇 |
2019年 | 548篇 |
2018年 | 739篇 |
2017年 | 672篇 |
2016年 | 669篇 |
2015年 | 408篇 |
2014年 | 536篇 |
2013年 | 4367篇 |
2012年 | 494篇 |
2011年 | 544篇 |
2010年 | 403篇 |
2009年 | 438篇 |
2008年 | 484篇 |
2007年 | 458篇 |
2006年 | 421篇 |
2005年 | 364篇 |
2004年 | 398篇 |
2003年 | 311篇 |
2002年 | 330篇 |
2001年 | 464篇 |
2000年 | 519篇 |
1999年 | 436篇 |
1998年 | 259篇 |
1997年 | 254篇 |
1996年 | 311篇 |
1995年 | 252篇 |
1994年 | 263篇 |
1993年 | 227篇 |
1992年 | 353篇 |
1991年 | 373篇 |
1990年 | 347篇 |
1989年 | 371篇 |
1988年 | 342篇 |
1987年 | 331篇 |
1986年 | 329篇 |
1985年 | 374篇 |
1984年 | 299篇 |
1983年 | 311篇 |
1982年 | 243篇 |
1981年 | 248篇 |
1980年 | 263篇 |
1979年 | 351篇 |
1978年 | 262篇 |
1977年 | 243篇 |
1976年 | 202篇 |
1975年 | 183篇 |
1974年 | 187篇 |
1973年 | 184篇 |
1971年 | 177篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
71.
72.
J. Baggaley 《Learning, Media and Technology》1978,4(3):24-29
A set of practical exercises is reported, used with students in illustration of the unconscious biases of TV presentation techniques upon the viewer. The development of media studies work of this type is discussed, and its outcome for the students is illustrated by extracts from their written reports. The article is intended primarily for teachers of media and television studies, exemplifying an experimental approach made possible by the use of simple video equipment at various levels of education. 相似文献
73.
Online lectures have been used in lieu of live lectures in our gross anatomy and embryology course for the past eight years. We examined patterns of online lecture use by our students and related that use to academic entry measures, gender and examination performance. Detailed access records identified by student were available from server logs. Total views per page of lecture material increased over the first six years, then decreased markedly between years seven and eight, possibly due to the recent availability of alternate forms of lecture audio. Lecture use peaked in midafternoon and again in the evening, although some use was seen at all hours. Usage was highest at midweek and lowest on Fridays as might be expected. Individual student's use varied widely from rates equivalent to less than one viewing/page to more than three viewings per page. Overall use by male students was greater than that of females and gender‐specific differences in the daily pattern were seen. Lecture use was correlated to the Medical College Admission Test® (MCAT®) Verbal Reasoning and Physical Sciences scores but not to composite MCAT scores or undergraduate grade point average. Overall use appeared to be driven by scheduled team‐based learning (TBL) sessions and major examinations. Specific subsets of lecture material were most often viewed before related TBL sessions and again during review for examinations. A small but significant correlation between lecture use and examination and course performance was seen, specifically in the male student population. These findings, along with earlier observations, suggest that varied use of online lectures is attributable to multiple factors. Anat Sci Educ © 2012 American Association of Anatomists. 相似文献
74.
This paper reports on a project aimed at identifying and exploring the development and implementation processes of teaching practices with interactive whiteboards (IWBs) in two Swedish K-6 schools. The purpose of the project was to generate results and insights of value when preparing student teachers for professional use of IWBs and to give school leaders guidelines when implementing IWBs. A range of methods were used to collect rich and varied empirical materials in this exploratory project. Judging from our data, it was obvious that the implementation process of IWBs, just like other information and communication technology initiatives, is very technology-oriented, but also dependent on attitudes. Over the course of time in the project, different strategies emerged among the teachers regarding whether and how they used the IWBs in their lectures. It also became increasingly clear during the study that there is a distinction between technical interactivity and pedagogical interactivity. Our results further suggest that training is needed when introducing these boards for future users. This training should include both technical instructions and pedagogical discussions. 相似文献
75.
Omid Noroozi Armin Weinberger Harm J.A. Biemans Martin Mulder Mohammad Chizari 《Educational Research Review》2012,7(2):79-106
Learning to argue is an essential objective in education; and online environments have been found to support the sharing, constructing, and representing of arguments in multiple formats for what has been termed Argumentation-Based Computer Supported Collaborative Learning (ABCSCL). The purpose of this review is to give an overview of research in the field of ABCSCL and to synthesize the findings. For this review, 108 publications (89 empirical studies and 19 conceptual papers) on ABCSCL research dating from 1995 through 2011 were studied to highlight the foci of the past 15 years. Building on Biggs’ (2003) model, the ABCSCL publications were systematically categorized with respect to student prerequisites, learning environment, processes, and outcomes. Based on the quantitative and qualitative findings, this paper concludes that ABCSCL environments should be designed in a systematic way that takes the variety of specific conditions for learning into account. It also offers suggestions for educational practice and future research. 相似文献
76.
Different forms of accountability are part of educational restructuring across Europe. This article will focus on the different national configurations of accountability from teachers’ point of view. A comparative perspective will enlarge on commonalities and differences between teachers’ experiences in Spain, Portugal, Ireland, England, Sweden, Finland, and Greece. The results obtained demonstrate, on the one hand, that educational policy regarding state-initiated standardization and accountability measures vary highly within the EU. On the other hand, it emerged that the oft-cited discussion between a beneficial professional versus a simplistic performance-oriented form of accountability misses the general disbelief of teachers towards all forms of accountability. Although their work has been increasingly rendered visible over the recent past, teachers pinpointed the mismatch between monitored needs and available resources to effectively transform their educational practice. 相似文献
77.
J. W. Whitlow 《Learning & behavior》2010,38(2):145-159
The importance of configural cues and whether a situation involves beneficent or maleficent outcomes was investigated in two experiments on human causal reasoning, based on experienced causal information. Participants learned positive and negative patterning discriminations involving either beneficent or maleficent outcomes in a health-reasoning task and in a social-reasoning task. With maleficent outcomes, positive patterning was consistently easier to learn than negative patterning, a positive patterning advantage that is predicted by current associative theories and commonly taken as evidence for configural cues. However, with beneficent outcomes, the two discrimination tasks were not significantly different in ease of learning, a result not predicted by current theories. The reliable positive patterning effect found with maleficent outcomes broadens the range of conditions in which the effect can be shown in causal reasoning. The novel effect of outcome valence poses an interesting theoretical challenge for attempts to account for the relation between learning about individual cues and combinations of those cues. 相似文献
78.
Evelyn S. Chiang David J. Therriault Bridget A. Franks 《Metacognition and Learning》2010,5(2):121-135
In recent decades, increasing numbers of studies have focused on metacomprehension accuracy, or readers’ ability to distinguish between texts comprehended more vs. less well. Following early findings that suggested readers are fairly poor at doing so, a number of studies have identified specific tasks to supplement a single reading of text that have resulted in greater metacomprehension accuracy. One assumption underlying these studies is that, in the absence of such tasks, metacomprehension accuracy is uniformly poor, and given their implementation, readers uniformly improve. Here we describe the individual variation that occurs both in the absence (e.g., within a single text reading manipulation) and presence (e.g., within a rereading or selective rereading task manipulation) of these supplementary tasks (N = 214), in order to make a case for greater attention to individual differences in metacomprehension accuracy. We also introduce a new manipulation in metacomprehension research, selective rereading, and argue that certain types of tasks may be more likely to reveal individual differences in metacomprehension accuracy due to the nature of the task being more or less demanding on working memory capacity. 相似文献
79.
Relative Age Effects (RAEs), describing attainment inequalities as a result of interactions between biological age and age‐grouping procedures, have been demonstrated across many sports contexts. This study examined whether an additional individual characteristic (i.e., handedness) mediated RAEs in tennis. Relative age and handedness distributions of 1027 male professional tennis players ranked in the year‐end ATP Top 500 for 2000–2006 were analyzed. Relatively older players, born in the first two quartiles, were over‐represented for right‐handed players (86.56%), whereas no RAEs were found for left‐handers (13.44%). Findings seem to suggest that left‐handers in tennis gain advantages that circumvent the RAE problem. 相似文献
80.
Collective efficacy is an important determinant of the motivation of individuals within groups, with increases in collective efficacy producing more effort in a task and greater persistence when faced with failure. To test hypotheses concerning the impact of collective efficacy on effort and persistence, participants (n = 22) were assigned to triads (consisting of the participant and two confederates) and performed three time trials on cycle ergometers. After trial 1, the participants were assigned to either a high or low collective efficacy condition, receiving appropriate bogus performance feedback. All groups received failure feedback after trial 2. Effort was assessed by performance time and maximum heart rate (HRmax) achieved during performance. A 2 (collective efficacy condition) x 3 (trials) analysis of variance with repeated measures on trials revealed significant interaction effects for both performance time and HRmax. Fisher's least significant difference post-hoc tests indicated that, following efficacy manipulation, groups low in collective efficacy significantly reduced both their performance time and HRmax, whereas groups high in collective efficacy maintained performance and HRmax. However, predictions concerning the impact of failure on persistence were not supported. Our results provide partial support for the role of collective efficacy in team sports. 相似文献