Applied Mechanics and Materials Vols. 241-244

Abstract: The Scripting languages (mostly JavaScript) applications in the network are heavily used to improve the user experience now. The trends make XSS (Cross-site Scripting Attacks) the most serious security problems in the current Internet. A XSS defensive scheme based on behavior certification is proposed in the paper. The website behavior model is generated based on the website logic and the user behavior. The browsing behavior certification is implemented based on the expected behavior of the resulting model, so as to offer security for the client even in the case that web server has suffered XSS attacks.

Abstract: In wireless mesh network, handoff decision strategy chooses targets according to the detected signal strength, in which way too many mesh clients will be associated to routes with stronger signal strength, resulting in severe load imbalance and a huge waste of wireless resource. In this paper, we propose a new first-price sealed auction game handoff strategy, which takes into consideration the signal strength and network load when choosing handoff target. This strategy assures the fairness during the handoff process as well as the load balance in the wireless mesh network. The simulation results show that our proposed strategy achieves better performance in the aspects of user number and signal strength.

Abstract: Due to the key property of UWB communications: short transmission range, the communication between different UWB devices sometimes needs the help of relay devices. We studied a hybrid wireless network including UWB devices and WiFi devices together. We analyzed the interference of the network and introduced a new reasonable interference definition in the hybrid environment. We proposed an optimal algorithm to reduce the interference of network. Extensive simulations have been conducted to evaluate the performance of the proposed algorithms. The simulation results show that the new proposed algorithm make the interference of the network minimum and improve the throughput of the network.

Abstract: Aiming at the solution of low communication rate, stability and anti-interference problem of lithium battery formation and test equipment, a plan of Controller Area Network (CAN) communication is introduced based on ARM-Cortex STM32F103 which integrates CAN controller to solve the problem of communication rate and stability between bottom and top. The system design and the realization of the hardware and software about CAN module is introduced in detail.

Abstract: In wireless mesh network，the IEEE 802.11e EDCA protocol with fixed queue-access mechanism, which makes the QoS of voice and video traffic are not guaranteed in the high load traffic, and the channel utilization is low when the network load is under-loaded .Therefore, a dynamic adjustment access queue algorithm is proposed, in which nodes could adjust their access queue according to the network load state they measured. So the proposed algorithm could improve the channel utilization while at the same time meeting the QoS demand of high-priority traffic. The simulation result shows that, the algorithm has better performance than that of the IEEE 802.11e on the guarantee of the QoS and the channel utilization under various scenarios.

Abstract: In order to protect the sensitive information in collaborative manufacturing grid environment, an access control solution was proposed to satisfy the inherent dynamic natures of the manufacturing grid, including dynamic business flow and system environment. Activity is introduced to encapsulate role and permission. Activity state, activity hierarchy and activity dependence are used to provide dynamic authorization and flexible multi-granularity privilege management, which can get adapted to the dynamic, flexible modern business process. UNIX-like permission can guarantee default minimum read/write/delete permissions. This proposed model can meet the need of manufacturing grid.

Abstract: An efficient authentication planning for XOR network coding is proposed in this paper, which is based on the network lifetime. The lifetime of a network is defined as the number of communication until the first node failure due to energy depletion. The planning aims at balancing the energy consumption of nodes and extending the network lifetime by dynamic adjusting the processing of nodes. Unlike traditional network coding authentication planning, the planning considers the network lifetime as performance index, not the overall energy consumption of network. Experimental results show that the planning can improve the network lifetime when compared with the existing one.

Abstract: Against the Status quo that satellite timing service in many fields of China mainly relies on the GPS system, for full use of the Beidou navigation satellite system with our own intellectual property, this paper presented a chip-level solution of dual-channel and dual-mode timing modules based on the Beidou-2 and GPS navigation system. The timing principle of Beidou navigation satellite system was first introduced, and then the hardware design of the timing module was presented with selection of highly-integrated RF chip and baseband processor chip. Furthermore, many kinds of output interfaces were designed to meet diverse service demand. By analyzing the format of the received signal, the flow chart for extracting timing information was also given. Finally, the designed timing module was tested by using the developed timing display system and test results show that the module has a better timing performance.

Abstract: ZigBee is a kind of new wireless communication technology which is widely used in many fields. It is now widely recognized that ZigBee is suitable for short distance, low complexity, low power, consumption and low rate applications. One of the most important applications is embedded system. Standards of the physical layer and the data link layer are developed by the group of IEEE802.15.4 and the others are developed by ZigBee alliance. First of all, the paper introduces the application of ZigBee wireless communication network. Then the emphases are to build ZigBee wireless communication network and take advantage of Visual Basic to realize RSSI collection.

Abstract: Single sign-on system could satisfy with the requirement of the multiple authentication in different applications, and implement unified authentication and user management. The high availability is the most significant factor of the single sign-on system ability especially in the situation of huge number of access. In this paper, it gives a method by using Nginx-based system to solve that concurrent access availability problem, and port Nginx system into practical implement.