开放式多媒体课件的设计与应用

该文提出了开放式多媒体课件设计思想,并就开放式多媒体课件的实现方式进行了分析,同时将课件的开放式思想在《合唱指挥与合唱训练》的课件中得到了具体体现。     

一种增强移动自组网Internet连接的改进型方案

针对移动自组网因单向链路以及盲目转播网关发现分组而造成的与Internet互联性能下降,提出了一种增强型互联方案.同时结合了先应和后应网关发现策略优点的混合网关发现策略被用来获取良好的Internet连接并保持低开销.而通过交换携带有额外增加的对称邻居节点列表和非对称邻居节点列表字段的AODV hello分组,单向链路得以从路由计算中予以清除而广播风暴也同时得到抑制.基于ns-2的仿真结果表明此改进型Internet连接方案在单向链路数量及节点移动速度均变化的应用环境下能取得较其他方案为优的互联性能.     

改信佛教与贱民的身份重构——安倍德卡尔的新佛教思想的内涵和意义

为使印度贱民摆脱受压迫的命运,安倍德卡尔带领印度贱民改信佛教,并创立新佛教为贱民提供思想指导,其新佛教表现为理性、科学、现代的思想体系,安倍德卡尔运用历史构建的方法,为贱民获得了一个新的宗教身份,从而获得新的政治和社会的身份,实现了对印度教的反叛。     

A study of airfoil parameterization,modeling, and optimization based on the computational fluid dynamics method

An excellent airfoil with a high lift-to-drag ratio may decrease oil consumption and enhance the voyage. Based on NACA 0012, an improved airfoil is explored in this paper. The class/shape function transformation has been proved to be a good method for airfoil parameterization, and in this paper it is modified to improve imitation accuracy. The computational fluid dynamics method is applied to obtain numerically the aerodynamic parameters of the parameterized airfoil, and the result is proved credible by comparison with available experimental data in the open literature. A polynomial-based response surface model and the uniform Latin hypercube sampling method are employed to decrease computational cost. Finally, the nonlinear programming by quadratic Lagrangian method is utilized to modify the multi-island genetic algorithm, which has an improved optimization effect than the method used on its own. The obtained result shows that the modified class/shape function transformation method produces a better imitation of an airfoil in the nose and tail regions than the original method, and that it will satisfy the tolerance zone of the model in a wind tunnel. The response surface model based on the uniform Latin hypercube sampling method gives an accurate prediction of the lift-to-drag ratio with changes in the design variables. The numerical result of the flow around the airfoil shows reasonable agreement with the experimental data graphically and quantitatively. Ultimately, an airfoil with better capacity than the original one is acquired using the multi-island genetic algorithm based nonlinear programming by quadratic Lagrangian optimization method. The pressure contours and lift-to-drag ratio along with the attack angle have been compared with those of the original airfoil, and the results demonstrate the strength of the optimized airfoil. The process for exploring an improved airfoil through parameterization to optimization is worth referencing in future work.     

注重实效,全面推进现代教育技术应用

该文概述了电子科技大学教育信息化与教育现代化所开展的工作和已经取得的成绩,同时也讨论了传统教育手段与现代教育手段相互关系和互补,以及今后的发展方向等问题。     

旅游对民族旅游地文化影响探析

跨学科研究是旅游研究中一种重要的手段,文章从社会学、传播学和旅游学三角度出发,主要就跨民族文化传播、文化冲突和文化控制三方面,分析了民族旅游目的地因旅游产生的正、负影响,进而提出了加强法制建设、加强教育、加强舆论导向和发挥群体作用等具体措施,以图促进民族旅游的健康发展和民族旅游目的地文化的进步.     

Chinese middle school teachers’ preferences regarding performance evaluation measures

Teacher performance evaluation currently is receiving unprecedented attention from policy makers, scholars, and practitioners worldwide. This study is one of the few studies of teacher perceptions regarding teacher performance measures that focus on China. We employed a quantitative dominant mixed research design to investigate Chinese teachers’ preferences for teacher performance measures and the possible reasons for their preferences. Considering the quantitative results, the surveyed Chinese teachers identified fulfillment of additional roles, collaboration with faculty and staff, and students’ test scores as the most important measures for performance evaluation. Qualitatively, the most important measures that the surveyed teachers reported were the teacher’s morality, workload, and students’ test scores.     

在《综合英语》课教学中培养学生的思维能力

陈述培养思维能力的意义，分析目前我国外语教学思维能力培养存在问题的原因，讨论思维能力的内涵及其和英语教学的关系，结合《综合英语》课教学提出了训练思维能力的9种方法。     

建立和完善农村卫生医疗保障体系——对福建省部分农村的调查分析

农村卫生医疗事业属为农村社会生产和人民生活创造共同条件的社会性基础结构的一部分.本文以福建省农村卫生医疗保障体系的建设现状为基础,通过对部分农村及相关部门、机构的调查取证,分析了福建省农村卫生医疗保障体系建设中存在问题,并就健全和完善福建省农村卫生医疗保障体系进行了粗浅的探索.     

Coordination pattern of baseball pitching among young pitchers of various ages and velocity levels

This study compared the whole-body movement coordination of pitching among 72 baseball players of various ages and velocity levels. Participants were classified as senior, junior, and little according to their age, with each group comprising 24 players. The velocity levels of the high-velocity (the top eight) and low-velocity (the lowest eight) groups were classified according to their pitching velocity. During pitching, the coordinates of 15 markers attached to the major joints of the whole-body movement system were collected for analysis. Sixteen kinematic parameters were calculated to compare the groups and velocity levels. Principal component analysis (PCA) was conducted to quantify the coordination pattern of pitching movement. The results were as follows: (1) five position and two velocity parameters significantly differed among the age groups, and two position and one velocity parameters significantly differed between the high- and low-velocity groups. (2) The coordination patterns of pitching movement could be described using three components, of which the eigenvalues and contents varied according to age and velocity level. In conclusion, the senior and junior players showed greater elbow angular velocity, whereas the little players exhibited a wider shoulder angle only at the beginning of pitching. The players with high velocity exhibited higher trunk and shoulder rotation velocity. The variations among groups found using PCA and kinematics parameter analyses were consistent.