全文获取类型
收费全文 | 706篇 |
免费 | 14篇 |
专业分类
教育 | 474篇 |
科学研究 | 28篇 |
各国文化 | 8篇 |
体育 | 130篇 |
文化理论 | 3篇 |
信息传播 | 77篇 |
出版年
2023年 | 5篇 |
2022年 | 5篇 |
2021年 | 11篇 |
2020年 | 23篇 |
2019年 | 30篇 |
2018年 | 32篇 |
2017年 | 33篇 |
2016年 | 37篇 |
2015年 | 18篇 |
2014年 | 24篇 |
2013年 | 166篇 |
2012年 | 16篇 |
2011年 | 20篇 |
2010年 | 15篇 |
2009年 | 18篇 |
2008年 | 17篇 |
2007年 | 15篇 |
2006年 | 19篇 |
2005年 | 6篇 |
2004年 | 8篇 |
2003年 | 14篇 |
2002年 | 10篇 |
2001年 | 11篇 |
2000年 | 16篇 |
1999年 | 12篇 |
1998年 | 4篇 |
1997年 | 7篇 |
1996年 | 3篇 |
1995年 | 13篇 |
1994年 | 5篇 |
1993年 | 5篇 |
1992年 | 10篇 |
1991年 | 2篇 |
1990年 | 4篇 |
1989年 | 4篇 |
1988年 | 3篇 |
1987年 | 4篇 |
1986年 | 2篇 |
1985年 | 5篇 |
1984年 | 8篇 |
1983年 | 4篇 |
1982年 | 8篇 |
1981年 | 8篇 |
1980年 | 3篇 |
1978年 | 4篇 |
1976年 | 2篇 |
1975年 | 5篇 |
1974年 | 6篇 |
1973年 | 2篇 |
1972年 | 2篇 |
排序方式: 共有720条查询结果,搜索用时 15 毫秒
1.
Roman Farana Gerda Strutzenberger Timothy Exell Jiri Skypala Huw Wiltshire Gareth Irwin 《Journal of sports sciences》2019,37(13):1449-1456
The aim of the study was to determine if sex differences exist in the key elbow and wrist joint injury risk factors during different cartwheel (CW) and round-off (RO) techniques performed by young male and female artistic gymnasts. Sixteen active young gymnasts (8 males and 8 females) performed 30 successful trials of CW and RO with three different hand positions (parallel (10), T-shape (10) and reverse (10)). Synchronised kinematic and kinetic data were collected for each trial. Two-way repeated measures ANOVA (3 × 2, technique × sex) and effect-sizes (ES) were used for statistical analysis. In conclusion, female gymnasts exhibited greater normalised peak vertical ground reaction forces (VGRF), elbow and wrist compression forces and elbow internal adduction moments during CW and RO skills compared with male gymnasts. In both sexes, the parallel and reverse techniques increased peak VGRF, elbow and wrist compression forces and the elbow internal adduction moment. Increased elbow flexion resulted in decreased peak VGRF, elbow compression forces and elbow internal adduction moment. Injury risk factors including elbow extension and internal adduction moment with axial compression force suggest that a CW and RO in reverse and parallel techniques can be hazardous especially for young female gymnasts. 相似文献
2.
3.
Lawrence K. Ametepee Morgan Chitiyo Susan Abu 《British Journal of Special Education》2009,36(3):155-161
The problem of student indiscipline is an issue of concern for teachers and parents around the world. Teachers need to maintain student discipline and for them to do so it is important that they also understand the nature of discipline problems. This study, by Lawrence Kofi Ametepee, who is studying for a PhD in special education, Morgan Chitiyo, board certified behaviour analyst and Assistant Professor of Special Education, both at Southern Illinois University, Carbondale, USA, and Susan Abu, who is currently a graduate student in the Department of Women's Studies at Texas Women's University, was designed to examine the nature and perceived causes of student indiscipline in Zimbabwean secondary schools. The authors anticipate that such an examination will promote teachers’, parents’ and policy makers’ understanding of student indiscipline, which will, in turn, enhance disciplinary policies and practices, making schools safer for all students and more effective in their role as educational and socialising agents. 相似文献
4.
5.
Cliff Morgan 《Learned Publishing》2004,17(1):31-37
This article provides an overview of those metadata schemes that are of most relevance to STM journal publishers. The current status of each scheme is discussed, and references given for detailed specifications. 相似文献
6.
This article reviews the Invisible Farmer project – the largest study of Australian women on the land – a third of the way through its three year funding period. It introduces the aims of this collaborative and multidisciplinary project, focusing on the role of records and oral histories in the creation of new narratives, and the task of raising public awareness of the important historical and contemporary contributions made by Australian women farmers. We examine the way digital platforms work to curate records and promote research, and outline the important role that the Australian Women’s Register, a core project of the Australian Women’s Archives Project, will play in achieving outcomes. 相似文献
7.
Debasis?GangulyEmail authorView authors OrcID profile Gareth?J.?F.?Jones Aarón?Ramírez-de-la-Cruz Gabriela?Ramírez-de-la-Rosa Esaú?Villatoro-Tello 《Information Retrieval》2018,21(1):1-23
Automatic detection of source code plagiarism is an important research field for both the commercial software industry and within the research community. Existing methods of plagiarism detection primarily involve exhaustive pairwise document comparison, which does not scale well for large software collections. To achieve scalability, we approach the problem from an information retrieval (IR) perspective. We retrieve a ranked list of candidate documents in response to a pseudo-query representation constructed from each source code document in the collection. The challenge in source code document retrieval is that the standard bag-of-words (BoW) representation model for such documents is likely to result in many false positives being retrieved, because of the use of identical programming language specific constructs and keywords. To address this problem, we make use of an abstract syntax tree (AST) representation of the source code documents. While the IR approach is efficient, it is essentially unsupervised in nature. To further improve its effectiveness, we apply a supervised classifier (pre-trained with features extracted from sample plagiarized source code pairs) on the top ranked retrieved documents. We report experiments on the SOCO-2014 dataset comprising 12K Java source files with almost 1M lines of code. Our experiments confirm that the AST based approach produces significantly better retrieval effectiveness than a standard BoW representation, i.e., the AST based approach is able to identify a higher number of plagiarized source code documents at top ranks in response to a query source code document. The supervised classifier, trained on features extracted from sample plagiarized source code pairs, is shown to effectively filter and thus further improve the ranked list of retrieved candidate plagiarized documents. 相似文献
8.
Elizabeth Hughes Morgan Chitiyo Ambumulire Itimu‐Phiri Kristen Montgomery 《British Journal of Special Education》2016,43(2):159-177
This research examines special needs education professional development needs among both general and special education schoolteachers in northern Malawi. A semi‐structured questionnaire with open and close‐ended questions was used for the research. Quantitative and thematic analyses were conducted to determine the extent to which teachers believe that students with disabilities should be educated together with students without disabilities, the importance of professional development for teaching students with disabilities, prioritised professional development needs regarding special education knowledge, and self‐identified needs for successful special education classrooms. Results indicate that teachers are generally in favour of inclusive practices and identify a high need for special education professional development. Participants identified training and resources to teach students with visual impairments or auditory impairments as a high priority. Participants noted a need for improved infrastructure, more educational materials, and recognition by the government for work in special education. 相似文献
9.
10.
Methodological Choices in the Content Analysis of Textbooks for Measuring Alignment With Standards 下载免费PDF全文
With the recent adoption of the Common Core standards in many states, there is a need for quality information about textbook alignment to standards. While there are many existing content analysis procedures, these generally have little, if any, validity or reliability evidence. One exception is the Surveys of Enacted Curriculum (SEC), which has been widely used to analyze the alignment among standards, assessments, and teachers’ instruction. However, the SEC can be time‐consuming and expensive when used for this purpose. This study extends the SEC to the analysis of entire mathematics textbooks and investigates whether the results of SEC alignment analyses are affected if the content analysis procedure is simplified. The results indicate that analyzing only every fifth item produces nearly identical alignment results with no effect on the reliability of content analyses. 相似文献