Advanced Materials Research Vols. 791-793

Abstract: With the development of computer hardware and software technology, virtual reality technology of computer has been widely used in various fields. Virtual teaching process is one of the main applications of virtual reality computer technology. Tennis is one of the most common sports. Tennis process mainly includes the process of catching a ball, serving a ball and hitting a ball. Virtual process of tennis system must establish an accurate numerical simulation model to calculate the mechanical impedance during the arm movement of human. According to this, it builds a model of the mechanical impedance of human arm in tennis virtual system using three-dimensional simulation software in this paper and gets the curve of mechanical impedance through the simulation. Finally, the article compares calculation results with the theoretical results and concludes that the theoretical results and simulation results are basically consistent which provide a theoretical reference for the design of the development of virtual system for the human.

Abstract: The long jump motion is a traditional track and field event. This sport is not only relevant with athletes congenital physical conditions, but also with the action skills in the long jump process. In the process of long jump, from the run-up to the take-off and landing, relatively large air resistance will be suffered, and the air resistance is affected by the size of the take-off speed and jumping height. Based on this, this article has carried on the detailed analysis of the air dynamic theory in the process of athletes long jump. It also has established the mathematical model of the friction resistance and air pressure resistance in the long jump process, and it has obtained the maximum incident angle when the maximum jump distance was happened by the take-off angle. Finally, through the experiment method, it has established the jumping speed loss curve and loss table under the air resistance effect, and obtained the incident angle and take-off speed in the long jump process, which provides the theory basis for the research of long jump motion.

Abstract: With the development of computer information science and technology, mode controlled by dynamic access and feedback can adjust the effect of physical education and sports teaching process. Basketball elective course is one of the favorite sport programs of many students in college. The game teaching is a new teaching model which not only breaks the traditional boring teaching method but also uses race in teaching and training process. It not only can mobilize the students' interest and enthusiasm for learning but also can improve the efficiency of the students. The dynamic SOA access model is an architecture model facing to service. Through SOA access control model, teachers and students can do a good interactive teaching and can communicate with each other about the teaching method and process timely and can review the effectiveness of teaching. Based on this, the paper designs and develops a new SOA-ARBA dynamic access control model and combines it with basketball sports teaching process. It also designs and evaluates teaching effect evaluation method of basketball teaching method and gets comparison chart of learning interest and achievement of game teaching method.

Abstract: Different databases have different structure,how to co-share those heterogeneous database is becoming a challenge to all of us.The current database integration methods is more and more complex, operability is not very strong, the author proposes an XML interchange file to achieve the integration of heterogeneous database program.The system logic structure diagram is given in this paper,major function modules and structure are introduced in detail combined with graphic, and finally the characteristics of the system is summarized.

Abstract: Ajax technology has been widely applied in a variety of Web development. It takes full advantage of existing technical standards to achieve updating the contents of the page without refreshing the entire page. In this paper, Ajax asynchronous mode enhances the credibility of user experience, optimizes the transmission between the browser and the server and reduces unnecessary data transferring back and forth and bandwidth usage. Using XML packaging method achieved Ajaxs efficient operation of bulk data and made the application of Ajax more extensive. Practice shows that Ajax technology based on XML packaging can provides a flexible and fast bulk data processing function in Web development.

Abstract: In order to keep the geometric shape and texture of the model in the process of model simplification, this paper proposes a simplification algorithm based on feature preserved for model with texture. By finding the feature points and odd points of the model controlling the point selection to collapse edge for simplifying model. Angle between normal vectors of the edges two vertices and the area of the triangles adjacent to the edge are introduced in the QEM algorithm as the error factor to redefine the cost of edge collapse, finally better keep the feature of model. This paper uses Mipmap technology to generate multi-resolution texture maps so that improves the efficiency when rendering model in real time.

Abstract: the complexity of equipment simulation training system architecture is an important factor affecting the system structure design. According to the characteristics of equipment simulation training system architecture, and combined with the existing complexity analysis method, a complexity analysis method is proposed that is based on the reliability, economy, security (three indexes) .The method synthetically considers the physics view, logic view, technology view and three indexes requirements of the system architecture. Examples prove that calculation results of this method reasonably response the complexity of architecture designs.

Abstract: Artificial neural networks are composed of interconnecting artificial neurons. Artificial neural networks may either be used to gain an understanding of biological neural networks, or for solving artificial intelligence problems without necessarily creating a model of a real biological system. Average interpolating scaling function is constructed with symmetric interpolating scaling function, and the two scaling functions are given the relationship between the derivatives, which provides a convenient approach for the interpolation, and greatly improve accuracy.

Abstract: Tether-net system is such a complex area that so many technical issues proposed by it increase the difficulty of system development and also put forward higher demands for verification. It is necessary to analyze failure data before going on the research of credibility evaluation. The importance of failure data analysis is emphasized first, and hazard plotting method which is a powerful graphical approach to perform failure data analysis is described at length. Following this, the method is applied in a tether-net system to get the results of the experiment and analysis.

Abstract: Research of wartime equipment support simulation faces complex and great challenges. It is very difficult to describe, design and finish the complex giant equipment support simulation system with the traditional simulation and model methods. Proposing a new framework structure based on ACP (artificial systems and computational experiments and parallel execution) approach to solve the complexity giant simulation of RESS (real world equipment support system). Including agent-based model analysis, computational experiments and decision-making problems and etc and discuss an ESASS (equipment support artificial simulation system) platform framework. The work can provide an actionable guidance to equipment support practice simulation research.