Applied Mechanics and Materials Vols. 556-562

Abstract: As an enterprise database product, SQL Server must track space usage status of all data pages in data files. SQL Server uses PFS page to track information of space usage in data pages. This paper discusses the principles of data page space tracking. Performed add, delete, modify, etc. series of experiments, results shown that the PFS data changes corresponding to different data operations.

Abstract: In 2011, Khan et al. analyzed and improved an enhanced secure dynamic ID-based remote user authentication scheme to overcome the weakness of Wang et al.’s scheme. In 2013, Young-Hwa An showed that Khan et al.’s scheme is not secure because Khan et al.’s scheme can not resist password guessing attack, forgery attack and does not provide user anonymity. After that he proposed a security improvement of dynamic ID-based remote user authentication scheme with session key agreement to remedy the weakness in Khan et al.’s scheme. Recently, through our study, we have found that Young-Hwa An’s mechanism is not secure enough. There still exists insider user’s attack, anonymity attack and forgery attack.

Abstract: Retracted paper: The improvement of erasure coding has deployed scatter/gather I/O, and current trends suggest that the development of systems will soon emerge. After years of compelling research into lambda calculus, we disconfirm the visualization of superpages, which embodies the confusing principles of e-voting technology. We concentrate our efforts on confirming that Lamport clocks can be made virtual, ambimorphic, and stochastic.

Abstract: Retracted paper: The development of public-private key pairs has evaluated congestion control, and current trends suggest that the refinement of B-trees will soon emerge. In our research, we validate the synthesis of public-private key pairs. Our focus in our research is not on whether DNS and Lamport clocks can synchronize to surmount this riddle, but rather on presenting new low-energy configurations (DOOR).

Abstract: Routing technology is the basis and the key for wireless self-organized network. Based on the summary of the researches on routing technology for wireless self-organized network, this paper comes up with routing protocols and corresponding solutions for wireless self-organized network. Meanwhile, the paper explores the future development in this field.

Abstract: With the continuous improvement in technology, campus life and learning applications are becoming increasingly modernization, and the popularity of mobile networks makes mobile terminals (especially smart phones) work as the most important information form for college students. Taking advantages of Android platform’s features to achieve efficient and intelligent campus applications, not only can implement synchronization of information dissemination, as well as in-time, learning and life convenience, but also reduce the students’ dependence on computers, which makes interpersonal communication everywhere. This paper takes the campus dining application for example, to explore campus applications based on Android, thereby promoting the construction of campus information technology, and further enrich the local campus life and learning.

Abstract: This article taking into account the network efficiency, QoS, resource consumption, latency, performance and ease of use, and implementation of the system on the basis of factors such as the complexity, media management, node in the system management, and streaming media QoS control, buffer management, incentives, and other key algorithm and protocol analysis and design, and trying to achieve a balance between the factors. Finally developed real-time streaming data distribution system based on P2P MStreaming program, its resources quickly and easily launch and positioning, exert the advantage of P2P technology can effectively solve the problem of server bottleneck link, decentralized services and resource consumption.

Abstract: With the popularity of the Internet, personal computer performance and network bandwidth continues to increase and the rapidly improving network streaming media applications have become more abundant. Due to the high bandwidth for streaming media have characteristics, traditional methods of C/S can easily cause server performance bottlenecks, introduce the idea of P2P live streaming media service, through normal computer exercise part of the server's functionality, decentralization of services, can effectively reduce the load on the server, as well as local high network bandwidth consumption. Therefore, P2P live streaming media distribution technology is potentially broad application prospects.

Abstract: Nowadays, to achieve quality education and lifelong education has become the requirements of the educational system, people pay more attention to the improvement of people's overall quality and the development of personality characteristics in education. Although the traditional classroom teaching model is changing to personalized education gradually, there is little progress of the personalized teaching as the constraints of the traditional pattern whole class teaching. With the computer technology and network technology application development, the emergence of adaptive learning systems to enable people to see the realization of personalized education and the dawn of life-long education. Adaptive learning system, through the design knowledge base, rule base and the learner characteristics of the teaching library, in order to achieve for the learner characteristics of personalized teaching. However, the ever-changing personality characteristics of learners to achieve a true highly adaptive learning system has not yet achieved, Therefore, the study personality characteristics of learners, Designed to guide the learners self-learning law program and in accordance with the teaching process personality characteristics of learners is to improve the adaptive learning system key.

Abstract: Nowadays, object-oriented design is the trend of software design patterns, and the database connection pool is one of the important research topics. The paper firstly describes the basic principle of connection pool under traditional, tomcat and hibernate modes. Based on that, a new connection pool method is proposed, and these four methods are experimentally simulated in java language at last. The comparative analysis has verified that the presented connection pool owns the optimum access time and it can greatly improve the access efficiency of database.