全文获取类型
收费全文 | 433篇 |
免费 | 5篇 |
国内免费 | 2篇 |
专业分类
教育 | 318篇 |
科学研究 | 30篇 |
各国文化 | 5篇 |
体育 | 67篇 |
综合类 | 1篇 |
信息传播 | 19篇 |
出版年
2022年 | 4篇 |
2021年 | 5篇 |
2020年 | 7篇 |
2019年 | 14篇 |
2018年 | 21篇 |
2017年 | 18篇 |
2016年 | 17篇 |
2015年 | 5篇 |
2014年 | 13篇 |
2013年 | 111篇 |
2012年 | 14篇 |
2011年 | 7篇 |
2010年 | 8篇 |
2009年 | 6篇 |
2008年 | 6篇 |
2007年 | 8篇 |
2006年 | 8篇 |
2005年 | 10篇 |
2004年 | 9篇 |
2003年 | 10篇 |
2002年 | 11篇 |
2001年 | 6篇 |
2000年 | 11篇 |
1999年 | 5篇 |
1998年 | 2篇 |
1997年 | 3篇 |
1996年 | 6篇 |
1995年 | 2篇 |
1994年 | 8篇 |
1993年 | 2篇 |
1992年 | 9篇 |
1991年 | 2篇 |
1990年 | 6篇 |
1989年 | 3篇 |
1988年 | 4篇 |
1987年 | 2篇 |
1986年 | 3篇 |
1985年 | 4篇 |
1982年 | 4篇 |
1981年 | 3篇 |
1980年 | 7篇 |
1979年 | 3篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 2篇 |
1973年 | 3篇 |
1971年 | 4篇 |
1924年 | 3篇 |
1923年 | 2篇 |
1921年 | 3篇 |
排序方式: 共有440条查询结果,搜索用时 0 毫秒
141.
Timothy K. F. Fung Dominique Brossard Isabella Ng 《Mass Communication and Society》2013,16(5):553-577
The purpose of this study is to examine the interactive effect of worldviews and media frames on policy preference. Using flooding as a case study, we examine the interplay of ecological worldviews and news framed as either emphasizing harmony with nature or mastery over nature on individuals' preference for flood protection policy. A total of 255 undergraduate students participated in a 2 (ecological worldviews: balance-with-nature vs. human-domination-over-nature) × 2 (media frames: harmony frame vs. mastery frame) between-subjects experiment. The findings indicate that both the balance-with-nature worldview and the human-domination-over-nature worldview have significant impacts on preference for flood protection policy. Furthermore, the harmony frame amplified the effect of the balance-with-nature worldview in supporting a natural approach to flood protection. In contrast, the mastery frame amplified the effect of the human-domination-over-nature worldview on the preference for a structural approach to flood protection. Implications are discussed. 相似文献
142.
Sarah Elliott Rosa Longacre 《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2013,23(1):43-51
The Document Delivery Services/Interlibrary Loan Unit and the Course Reserves Unit at the University of California, San Diego's Access Services Department both utilize the Konica Minolta PS7000 book scanner to deliver requested documents and post electronic reserve items. Though the hardware is the same in both units, unique service goals and software—Ariel Interlibrary Loan Document Transmission Software for DDS/ILL and Adobe Photoshop for Course Reserves—result in different issues and challenges. This article discusses the shared practices of the Document Delivery Services/Interlibrary Loan and Course Reserves Units and how each unit utilizes the Konica Minolta PS7000 book scanner to offer better service for their patrons. 相似文献
143.
Alexander Kurz Stephen N. Elliott Ryan J. Kettler Nedim Yel 《Educational Assessment》2013,18(3):159-184
This study provides initial evidence supporting intended score interpretations for the purpose of assessing opportunity to learn (OTL) via an online teacher log. MyiLOGS yields 5 scores related to instructional time, content, and quality. Based on data from 46 middle school classes, the evidence indicated that (a) MyiLOGS has high usability, (b) its quarterly summary scores are relatively consistent over time, (c) summary scores based on 20 randomly sampled log days provide reliable estimates of teachers' respective yearly summary scores, and (d) most teachers report positive consequences from using the instrument. Agreements between log data from teachers and independent observers were comparable to agreements reported in similar studies. Moreover, several OTL scores exhibited moderate correlations with achievement and virtually nonexistent correlations with a curricular alignment index. Limitations and directions for future research to strengthen and extend this initial evidence are discussed. 相似文献
144.
Abstract Stroboscope photography and accelerometry techniques were used to measure rebound velocities of tennis balls from impact locations on the strings and vibration levels at the rotation point on the racket handle for both conventional and oversized tennis rackets. The oversized rackets demonstrated lower vibration levels and higher rebound velocities than their conventional counterparts when balls struck by the racket were compared along a transverse axis drawn perpendicular to the racket shaft and through the geometric center of the strings. These differences were, however, only significantly different (p < .01) at the impact location 6 cm along this axis toward the top edge of the racket. Higher rebound velocities were recorded at all impact points from the oversized rackets along the axis in line with the racket shaft. Significantly lower vibration levels were apparent at locations 4 cm, 6 cm, and 8 cm from the string center away from the racket handle. The lower vibration levels, particularly at the extremes of the racket face, in conjunction with higher rebound velocities, support the concept that this new racket design is of practical benefit to users. 相似文献
145.
The influence of a bowling harness, as a training aid, was assessed as a means of modifying bowling technique. Thirty-three 13-year-old bowlers received a standardized 15 min of bowling coaching twice a week for 8 weeks. They were randomly assigned to one of two groups. The 13 participants in the intervention group used the bowling harness throughout the coaching, while also receiving verbal and visual feedback. The 20 participants in the non-harness group received the same visual and verbal feedback. Three-dimensional videography (200 Hz) of each player's bowling action enabled the calculation of transverse plane shoulder alignment counter-rotation, separation angle, lateral flexion and hyperextension of the trunk before and after the intervention. The restriction applied by the harness produced a significant reduction ( P = 0.006) in separation angle and forced the bowler to adopt a position at back-foot impact that reduced the 'twist' in the spine. However, it had no effect on restricting other aspects of trunk movement during the critical phases of the bowling action. No significant long-term modifications to technique were found after the coaching intervention when players were assessed without the harness. 相似文献
146.
Brian K. V. Maraj PhD Digby Elliott Timothy D. Lee Barbara J. Pollock 《Research quarterly for exercise and sport》2013,84(4):404-412
Abstract The purpose of this study was to examine relative timing, relative distance, and effector independence characteristics of the triple jump. We videotaped expert and novice triple jumpers using standing and running starts. On some trials, the triple jumpers were required to take off from their nondominant leg. Gentner's (1987) interaction test was used to assess the proportional duration model in describing the timing of the component submovements. For both experts and novices, the proportional durations varied with the type of start. For experts, the relative timing of the jump components was independent of the take-off leg. The findings were mixed for the novices. Similar results were obtained when relative distance was examined. These results are discussed with respect to constructs related to variability in skilled performance. 相似文献
147.
148.
149.
Jeffery E. Aspelmeier Michael M. Love Lauren A. McGill Ann N. Elliott Thomas W. Pierce 《Research in higher education》2012,53(7):755-781
The role of generational status (first-generation vs. continuing-generation college students) as a moderator of the relationship between psychological factors and college outcomes was tested to determine whether generational status acts as a risk factor or as a sensitizing factor. The sample consisted of 322 undergraduate students who completed online measures of self-esteem, locus of control, and academic adjustment and provided self-reports of GPA. Generational status significantly moderated the relationship between psychological factors and academic outcomes. Generally, it was found that the relationship between psychological factors and academic outcomes were strongest among first-generation students. Further, it was found that for the majority of the interactions with locus of control, first-generation status acted as a sensitizing factor that amplified both the positive and negative effects of locus of control. In contrast, for self-esteem, first generation status acted as a risk factor that only exacerbated the negative effects of low self-esteem. These results are interpreted as reflecting motivational differences between first- and continuing-generation students and are discussed with respect to the social/cultural capital hypothesis that is most frequently presented in the existing literature. 相似文献
150.
Chanel Kit Ho Fung 《Early Years: An International Journal of Research and Development》2012,32(1):17-33
Across cultures and eras, children have engaged in play as part of the process of growing and maturing into adulthood. Play has been recognized as an effective form of pedagogy to promote learning in the early years. However, beliefs about what play is and how it should be practiced vary across Hong Kong and in other countries. Because Chinese culture places a heavy emphasis on academic achievement, a play-based curriculum has not been widely implemented in the region. Through classroom observations and interviews with key stakeholders in early childhood education, namely parents, teachers, and principals, this study reveals the complexity of views on this matter and uncovers the root cause of the difficulties in supporting play in the Hong Kong kindergartens. These findings may help promote the play-based curriculum in Hong Kong and other countries where play is in crisis. 相似文献