Applied Mechanics and Materials Vols. 651-653

Abstract: In this paper, a novel cooperation space-time network coding (CSTNC) scheme based on multi-sources distributed cooperative network is considered. In this scheme, multiple sources transmit signals to relay and destination node. The relay re-encodes the decoded signals through space-time network coding with the aid of multiple antennas. The simulation shows that the BER, capacity and outage probability of the CSTNC becomes better with the increasing of relay antenna number and very close to traditional space-time network coding (TCSTC) scheme. Meanwhile, transmission efficiency analysis demonstrates that CSTNC scheme has higher transmission rate.

Abstract: Content Management System (CMS) is one of the most widely used online system. In this paper, we design a lightweight CMS named Yescms, which can be easy to extend and deploy for specific purpose. Content management and user management are the core modules of Yescms. Additionally, we develop Yescms based on the open source technologies, Model-View-Control architectural pattern and role-based access control.

Abstract: ARINC 653 specification has been introduced as a standardized interface definition of real-time operating system to simplify the development of Integrated Modular Avionics. The ARINC 653 provides a strict and robust time and space partitioning to guarantee the reliability of avionics by isolating the failures of the system. Configuration data for the time and space partitions in the ARINC 653 can be defined as the XML configuration file that can be accessed only by system OS. Unfortunately, it is quite tedious activity to confirm the integrity of partition scheduling and to check the syntax errors of XML during the integration tasks. In this paper, we present a software configuration tool that provides generating the configuration data and verifying the integrity of partitioning based on XML Scheme of the ARINC 653 standard.

Abstract: For CBTC train-ground communication system, wireless interference is a matter of serious harm to the safety and reliability. This paper embarks from the on-board radio management module, designs the function of excluding wireless interference for radio management module.

Abstract: This paper introduces a satellite /3G+ multi-link communication terminal based on medical rescue information system, which provides 3G wireless network and satellite communication services and integrates cellular phone, maritime satellite terminal, BeiDou user device and Iridium phone [1]. The new terminal could improve the communication adaptability and transmission efficiency for the emergency medical rescue information system even in hostile environmental conditions [2] (such as earthquake, flood, and war). Tests showed that: this terminal has the advantages of simple access, rapid switch, efficient transmission, it can also guarantee timely and effective interaction of all kinds of information, so as to ensure the time-effect treatment for emergency medical rescue system [3].

Abstract: To simulate snow falling scene dynamically, a method based on particle system is presented to simulate snow falling effects, it use calculated model to simulate the real effects of snow falling in the basis of snow natural characteristics. The simulation results have proven that the proposed method is more effective for simulating snow falling with realistic effects.

Abstract: Database is widely used in computer systems currently, and OLE DB is the main method for applications to access database on Microsoft's system. In order to store sensitive data in commercial database management system, application often encrypt the data before keeping it into database. UDF (User Defined Function) is helpful for applications in encrypting procedure, but it can't handle Lob (Long object) data. A secure OLE DB provider for enhancing user authentication and encrypting Lob data in database is proposed. By adding necessary attributes of user authentication and cipher algorithm to encrypt Lob data in OLE DB provider, the security of data stored in database is improved. Experiments show that the proposed OLE DB provider is transparent, efficient, easy to implement and reliable.

Abstract: This article focuses on building suitable theoretical life scene for higher vocational computer network technology profession “computer network technology” curriculum, as far as possible from structure, provide a return to life world education, pay attention to social life, pay attention to the experience of students and individual difference, reduce the boring degree of classes, let students learn more easily, and of course more interested in courses.

Abstract: The emergence of the Internet for the global economy and the society as a whole has brought a huge change, the popularity of the Internet, the development and applications, has created new economic development stage -- E era, network, information , digitization has become the main melody of The Times. The structure of the network economy not only changed the whole social economy and environment, and changing the human study, work and lifestyle, as well as hospital library has brought profound changes. Make full use of advanced network technology and abundant information, the omni-directional service for readers, meet the demand of the medical staff, has become a hospital library in the new period in urgent need of research, discuss and solve the problem.

Abstract: The management of user permissions is one of the basic and important functions to ensure the safety of a management information system. Firstly, this paper analyzes the shortcomings of the tow kinds of access-control methods generally used; then brings forward an algorithm of Traversal system menu items and stored the items in database; finally, realized the algorithm in C# with an application. By using the algorithm of traversal menu items, user permissions of a system can be controlled easily and dynamically.