基于SVM实现风力机组控制系统参数优化

分析了风力机的基本特性,阐述了风力发电机组控制系统在低于额定风速时风力机的最大风能捕获及高于额定风速情况下的变桨距控制。在此基础上,利用SVM(support vector machines)优化风力机的风能利用系数以及变桨距控制系统的控制参数。仿真分析表明,风能转换系数的支持向量机模型具有很好的精度和泛化性能,而优化后的变桨距控制系统可对输出功率的调节获得较好的效果,保证风电系统的恒功率输出。     

三维计算机辅助设计——Solidworks课程中案例教学法的应用

本文从三维计算机辅助设计课程的特点出发,论述三维计算机辅助设计课程中案例教学法的作用及应当注意的问题。     

重庆市少数民族传统体育校本课程开发现状研究

运用文献资料法、数理统计法、分析归纳法等研究方法,以重庆市少数民族传统体育校本课程开发为议题进行了重点剖析,研究结果表明:少数民族传统体育校本课程开发已经成为了传承和发扬传统体育文化、完善三级课程的最佳途径。重庆市少数民族传统体育校本课程开发应注重全面性和整体性,应在"三级课程"管理体制的基础上,加大少数民族传统体育校本课程开发的力度,充分理解和掌握课程开发的理念和内涵,在理念和内涵的指引下,确定相应的课程开发目标,拓宽课程开发的模式,分清各层次各级别的主体、客体,积极调动参与主体的主观能动性,促进少数民族传统体育校本课程开发的有序进行。     

舰载机飞行员抗负荷能力的训练研究

立足于我海军舰载机飞行员训练实际情况,探索舰载机飞行员身体特点和适应飞行要求,着眼于为海军航空母舰作战输送合格舰载机飞行员的培养模式进行评估并提供量化的评估方法,寻求提升飞行员培养效能的途径,从而提高飞行员综合素质,为建设强大的中国海军服务。     

学校体育教师教学技能的影响因素分析

随着新课改的开发和实施,学校体育对教学手段和教材教法的多样化要求也愈加需求,不仅需求体育教师人文素质和技能掌握的不断提升,还需加强我国学校体育教师的管理体系和流动制度的宏观调控。再根据校本课程下教学内容、目标、模式的合理实施及体育教学资源可持续发展的利用,来解决师资队伍体系和教学技能提升对于学校体育教学改革过程中带来的困惑。     

A national survey of UK health libraries investigating the cost of interlibrary loan services and assessing the accessibility to key orthopaedic journals

Background: NHS Library Services are utilised by NHS staff and junior trainees to locate scientific papers that provide them with the evidence base required for modern medical practice. The cost of accessing articles can be considerable particularly for junior trainees. Objectives: This survey looks at variations in cost of journal article loans and investigates access to particular orthopaedic journals across the country. Methods: A national survey of UK Health Libraries was performed. Access to and costs of journals and interlibrary loan services were assessed. Availability of five wide‐reaching orthopaedic journals was investigated. Results: Seven hundred and ten libraries were identified. One hundred and ten libraries completed the questionnaire (16.7%). Of these, 96.2% reported free access to scientific journals for users. 99.1% of libraries used interlibrary loan services with 38.2% passing costs on to the user at an average of £2.99 per article. 72.7% of libraries supported orthopaedic services. Journal of Bone and Joint Surgery (British) had greatest onsite availability. Conclusions: The study demonstrates fluctuations in cost of access to interlibrary loan services and variation in access to important orthopaedic journals. It provides a reflection of current policy of charging for the acquisition of medical evidence by libraries in the UK.     

Widening access to educational opportunities through teaching children how to reason together

This paper reports on a project to explore the impact of promoting exploratory talk as the medium of teaching across the curriculum for 6‐ and 7‐year‐old pupils in three primary schools in the UK. We found that this focus on teaching through exploratory talk (which we call the Thinking Together approach) enabled the children to work together more inclusively and more effectively, improving their social skills and, at the same time, their use of language for reasoning and learning.     

Computer‐based learning: Interleaving whole and sectional representation of neuroanatomy

The large volume of material to be learned in biomedical disciplines requires optimizing the efficiency of instruction. In prior work with computer‐based instruction of neuroanatomy, it was relatively efficient for learners to master whole anatomy and then transfer to learning sectional anatomy. It may, however, be more efficient to continuously integrate learning of whole and sectional anatomy. A study of computer‐based learning of neuroanatomy was conducted to compare a basic transfer paradigm for learning whole and sectional neuroanatomy with a method in which the two forms of representation were interleaved (alternated). For all experimental groups, interactive computer programs supported an approach to instruction called adaptive exploration. Each learning trial consisted of time‐limited exploration of neuroanatomy, self‐timed testing, and graphical feedback. The primary result of this study was that interleaved learning of whole and sectional neuroanatomy was more efficient than the basic transfer method, without cost to long‐term retention or generalization of knowledge to recognizing new images (Visible Human and MRI). Anat Sci Educ. © 2012 American Association of Anatomists.     

Methods of Selection and Acquisition of European French Monographs in an Academic Law Library

This article examines methods of selection and acquisition for European (as opposed to Canadian) French-language print monographs for a research-level law library collection in North America based on the study of the practices and techniques locally developed in the Nahum Gelber Law Library, McGill University. These techniques represent a combination of non–approval plan–based methods: blanket order, standing orders, online slip service in WorldCat, use of other libraries’ acquisition lists, and firm orders. The methods described in this article are not exclusive to the selection in the subject area of law and could be applied in other academic disciplines.     

3Hs Education: Examining hands-on,heads-on and hearts-on early childhood science education

Active engagement has become the focus of many early childhood science education curricula and standards. However, active engagement usually emphasizes getting children engaged with science solely through hands-on activities. Active engagement by way of hands, heads, and hearts are kept separate and rarely discussed in terms of getting all to work together, although inquiry-based education and student interest have been accepted as important in science education. The current study is an inquiry-based research. It aims to describe and examine projects and activity stations for preschoolers in a Turkish preschool classroom bringing together the pieces of the puzzle of science education, called here ‘Hands–Heads–Hearts-on Science Education'. The study, conducted from a qualitative-interpretivist paradigm, reveals that activity stations and projects create a context for hands-on (active engagement), heads-on (inquiry based or mental-engagement), and hearts-on (interest based) science education. It is found that activity stations and projects, when maintained by appropriate teacher-support, create a playful context in which children can be actively and happily engaged in science-related inquiry.