Advanced Materials Research Vols. 846-847

Abstract: To solve the problem of fault diagnose of computer network application layer, the design of a neural network fault diagnosis system based on rough sets becomes possible. Details the structure of system, the structure of the rough set neural network and training method , and the effectiveness of the proposed method is validated by computer simulation.

Abstract: The methods of the evaluation of network performance include analysis method, numerical method and simulation method. And the simulation method is the main way to analyze the performance of network system. The paper discusses the general method of the analysis on the performance of network and the simulation method of the analysis on local area network.

Abstract: Taking data mining technologies as the key, with the analysis of electronic commerce, this paper studies deeply on the implementation of data mining system that is electronic commerce-oriented.

Abstract: This paper mainly studies the present distributed technology and database applications, with examples for analysis, analysis of the current computer technology in the field of distributed technology. And based on the theory of database, distributed technology and database technology, database technology is to call SQL, distributed research. From the analysis of the distributed computer field, the combination of the database and application the paper was written.

Abstract: In this paper, mobile communication is discussed in detail. And the sketch map for mobile e-commerce industry is introduced. The results show that with the advent of the era of mobile Internet, mobile e-business is gradually stepping into lives, its influence is appearing. As a research and development of mobile e-commerce application, we must pay attention to the development of related technologies, and we must focus on the impact of the new technology for mobile electronic commerce.

Abstract: The Aggregation of visual simulation and IETM is present on this paper. This method builds the relationship on 3D model and technology paper. Complex maintenance process such as assembly or disassembly can be showed simply, and this method can provide high instruction for equipment maintenance.

Abstract: This paper analyzes the service modes, typical models at home and abroad, and the subjects of key nodes of the industrys most popular cloud computing. As the IT industry will enter the cloud computing era from the PC-centric Internet era, enterprises, institutions and colleges shall get fully prepared in advance.

Abstract: Vehicle Ad Hoc network (VANET) has grown fast in recent years. The routing protocol is one of the key technologies in VANET. Due to the particularity of VANET networks, the implementation and validation of all the protocols in realistic scenes are not possible. In this paper, we use the network simulation software OPNET to simulate the network models of VANET in different urban scenarios. We assessed the performance of Dynamic Source Routing (DSR) and Optimized Link State Routing (OLSR) protocols. Then we propose a new method by deploying the roadside equipment with Mobile IP. The results show that the performance is improved compared with the existing schemes.

Abstract: Vehicular Ad-hoc network (VANET) is a promising technology in enabling highway active safety applications such as collision warning and information broadcasting. Nowadays, VANET is extended to offer more services like vehicle tracking, WI-FI access, and Global Positioning System (GPS) services. However, there`s still serious challenges in enabling information disseminated while avoiding broadcast storm. In this paper, we develop an HLA Federation with two federates to evaluate the VANET performance with or without Road-side Unit (RSU) in the same scenarios. We use OPNET Modeler to evaluate the performance of VANET and use Paramics to set the trajectory of vehicle node in OPNET Modeler and find out the improvement of communication quality brought by RSU.

Abstract: IEC61850 is the current international standard for the communications networks and systems in substations, and it allows seamless communications within and among electrical substations. Based on the discussion of IEC61850 standard, this paper provides details on how to use IEC61850 modeling methodology to model substation auxiliary system. The model considers the functions and characteristics of substation auxiliary system and it meets the IEC61850's modeling requirements.This paper also discusses the implementation of IEC61850 based management software for substation auxiliary system.