青年男子排球运动员弹跳力模型

弹跳力是排球运动员的一项最重要的专项素质,为了探索发展青年男子排球运动员弹跳力的有效途径,以四川、重庆青年男子排球运动员为研究对象,对他们有关弹跳力的多种因素进行了相关、多元分析,进而制定出发展弹跳力的回归模型,为青年男子排球运动员弹跳力提供一个模型标准和参考.     

基于引用关系的知识库建设

提出一种基于引用关系构建知识库的方法,通过提取文献间相互引用的知识内容来建设知识库.把该方法应用于图书情报学科领域行试验,试验结果表明该方法是可行的.最后探讨了该方法需要进一步改进和完善的地方.     

信任模型及其改进研究

在分析现有信任模型不足的基础上,提出一个改进的信任模型。改进后的信任模型增加了事务因素,并通过一系列函数来描述信任,为协同与安全决策提供依据。同时将信任值区间扩大,增加实体表达自身认知的方法,使得信任度连续化,可以更加有效地解决信任管理问题。     

Turning a Service Learning Experience into a Model of Student Engagement: The Lighthouse Heritage Research Connections (LHRC) Project in Hong Kong

The digital shift has provided easy access to academic library users, and yet, the usage of archival collections continues to be low. At the same time, the need for innovation in library services for cultural heritage scholarship and its advancement is emerging. This paper outlines a library-led service-learning program that connects students with lighthouse artifacts, archival collections, scholars in global academia, and wider communities. Student engagement cases are provided to illustrate the way in which the librarian utilizes the Framework of Information Literacy for Higher Education by ACRL to work closely with students. These cases also demonstrate how students can contribute to knowledge creation and preservation efforts for a specific cultural heritage topic that is not static, but which keeps receiving new contributions or additions to the depository. Thus, this paper is an answer to the ACRL's call for pilot projects to be assessed and shared with the wider community of academic librarians and support staff. It also builds on emerging roles for academic libraries like engaged learning. Librarians must move beyond simply seeing themselves as partners. Instead, librarians should see themselves as prime facilitators that co-create and co-develop cultural heritage research and historical projects by connecting actors and resources more effectively than any single actor can do alone.     

Photonic orbital angular momentum with controllable orientation

Vortices are whirling disturbances, commonly found in nature, ranging from tremendously small scales in Bose-Einstein condensations to cosmologically colossal scales in spiral galaxies. An optical vortex, generally associated with a spiral phase, can carry orbital angular momentum (OAM). The optical OAM can either be in the longitudinal direction if the spiral phase twists in the spatial domain or in the transverse direction if the phase rotates in the spatiotemporal domain. In this article, we demonstrate the intersection of spatiotemporal vortices and spatial vortices in a wave packet. As a result of this intersection, the wave packet hosts a tilted OAM that provides an additional degree of freedom to the applications that harness the OAM of photons.     

注重深度解读提升思维品质

在阅读教学中,教师需要注重以文本解读为基点,提升学生的思维能力.在阅读教学中,教师需要指导学生紧扣语言活动、开展问题探究和文本拓展,高效开展深度的思维学习,从而提升学生的思维品质.     

机械结构对两轮移动足球机器人运动精度影响研究

以自行设计的两轮移动足球机器人的机械结构为对象,从理想情况和实际情况分别进行机器人小车的运动学分析与建模,进行比较并得出结论。分析了驱动轮半径对运动学模型的影响。最后从机械结构的设计上讨论了对小车运动精度的影响,并提出相关改进措施。     

柏拉图领导教育思想初探

柏拉图的《理想国》是一部内涵丰富的著作，从领导教育的角度看，它是一部领导教育的巨著。柏拉图对领导者的素质、领导者的教育与选拔以及领导教育的课程设置等内容作了详细的阐述，形成了自己的领导教育理论体系，具有自己的特色。     

舞蹈艺术的意境创造——兼论中国书画与舞蹈的共通性

境界说是我国传统文艺美学的重要理论,主张艺术作品要创作出"象外之象""景外之景""韵外之致"和"味外之旨",以达到"言有尽而意无穷"艺术境界的审美要求,并认为只有创造出具有一定艺术境界的作品,才是具有高格的上品。本文以《扇舞丹青》这部作品为入径进行分析,探寻古典舞蹈与中国传统书画艺术相结合的艺术境界。     

Tracking Pre-service Teachers’ Changing Conceptions of Good Science Teaching: The Role of Progressive Reflection with the Same Video

A CD-ROM consisting of videos of two lessons by different teachers demonstrating exemplary science teaching was used to elicit, develop and track the changing conceptions of good science teaching of student teachers enrolled for the one-year Postgraduate Diploma in Education (PGDE) at several stages during the programme. It was found that the videos acted as an effective probe to elicit student teachers’ conceptions and had significant impact on those conceptions at different stages of the programme through the provision of teacher models demonstrating exemplary teaching. The experience has extended novice teachers’ awareness of alternative teaching methods and approaches not experienced in their own schooling, broadened their awareness of different classroom situations, provided proof of existence of good practices and prompted them to reflect on their current conceptions of good science teaching. Most importantly, the strategy of asking student teachers to watch the same videos on three separate occasions at different times of the course was recognized by them as a crucial element in facilitating their reflection on their changing conceptions of good science teaching. PGDE is the standard form of pre-service teacher education in Hong Kong. It provides qualified teacher status within Hong Kong. Student teachers enrolled for the PGDE have completed a relevant undergraduate degree.