Advanced Materials Research Vols. 926-930

Abstract: Hadoop is the most popular Cloud Computing platform with source code. Its maturity and completeness of ecosystem attract a large number of technical personnel and companies. With the development of a variety of assistive technologies, it is more and more easily to build Hadoop platform. But how to judge a Hadoop platform is built successfully and whether robust enough to be able to put into actual production also requires a series of benchmark tests. This article will introduce the principles and usage methods of Hadoop platform benchmark tools such as Slive, DFSIO and TeraSort. Then compare their results and make a comparison.

Abstract: The immunization algorithm is from the theory of complex network. The algorithm is simple, highly feasible based on scale-free network model. This paper uses random immunization algorithm to solve optical network energy issues. This paper selects the service to be the operator and to save energy through node immunization. The simulation results show the algorithm can be implemented. This paper provides another possibility to energy saving on optical network.

Abstract: Seafloor observation network provides limited opportunity for repair due to the atrocious weather on the sea. As a result, reasonable reliability allocation methods are required to assure the network is sufficiently reliable during expected years. In this thesis, betweenness is used for evaluating the importance of component based on binary search algorithm, and residual connectedness reliability is calculated according to Monte Carlo method to avoid combinatorial explosion. This method is applied on meshed seafloor observation network to obtain satisfying reliability allocation for backbone nodes. Further, the relationship between nodes reliability allocation and residual connectedness reliability is discussed, on the basis of which certain suggestions for network improvement are proposed.

Abstract: In order to integrate multiple experts' opinions effectively, a fault tree analysis model based on the similarity is presented in this paper. First, the concept of similarity used to fuse data is introduced to analyze the similarity among multiple experts' opinions, and to assign each expert's opinions credibility weights based on the analysis results. Then, experts' opinions is synthesized by evidence theory, the probability of accident is predicted, and the importance degrees of basic events which may lead to top event occur is judged. Finally, a quantitative FTA model for the gas poison is established to compute the probability of top event and identify the most dangerous path which may lead to the accident, the results of analysis provide references to the managers when they develop validity measures.

Abstract: Ad Hoc network is a special kind of mobile multi-hop wireless networks, which has been widely used various occasions. In this paper, the main characters of Ad Hoc network are presented. Meanwhile, based on the inherent defect and security threats of Ad Hoc network, the corresponding security mechanism and strategy are proposed.

Abstract: In ad hoc networks, ZRP is the most typical protocol in hybrid routing protocols. Aiming at the problem that the scheme for maintaining an inter-zone route in ZRP makes ZRP take more lost packets and more route re-discovering times; the former makes ZRP take lower delivery ratio of data packets, which makes ZRP take less reliability; the latter makes ZRP take more transmission delay and more routing overheads, a reliable zone routing protocol (RZRP) was proposed. RZRP was designed from basic idea and key technologies, and the protocol performance was analyzed in a simulation. The simulation results show that RZRP improves delivery ratio of data packets, which shows that RZRP improves the protocol reliability, and RZRP also reduces the transmission delay and routing overheads.

Abstract: The research analysis about the current situation of ollege aerobics information resource construction, pointing out the drawbacks about college aerobics information resources construction under the current web environment and proposes the strategy about how to construct college aerobics information resources under the Network Environment. This article includes the principles and feasibility of college aerobics information resources construction under network environment, and put forward our own ideas about the strategy of college aerobics information resources construction under network environment.

Abstract: Mobile Ad Hoc Network (MANET) because of its flexible, networking fast, strong anti-destroying ability and other characteristics, is widely used in military, disaster relief, interim meetings and other scenes ^[1]. Simulation is the primary means of mobile Ad Hoc network research and evaluation of performance, while mobility model is an important component of the performance simulation of Ad Hoc networks. The authenticity of device nodes’ movement in the manner, directly affects the network to evaluate the effectiveness and reliability of the simulation. This paper selects Gibbs group mobility model, and simulate the characteristics of the nodes’ mobility in contingency-responding scene.

Abstract: The aim of the ideological and political education research based on information dissemination model is to carry out purposed and conscious influence on the educated, and achieve social activities, interactive behavior, sharing and consensus in the way of information delivery, acceptance and feedback. Information dissemination and ideological and political education fits in nature, ideological and political education is a special performance information dissemination activity, including loop interaction model, linear model, the system model.Ideological and political education based on information dissemination model includes the sources of information, messages, feedback and other effects links. The model is good for us to have intuitive, concise study of ideological and political education.

Abstract: The rapid development of network information technology makes enterprise information systems expose to an open and complex environment, which brings a severe test to the enterprises internal control. This article mainly analyzes problems which internal control of accounting information system under the network environment may face in the aspects of control environment, risk evaluation, control activity, information and communication and supervision. It also advices that through strengthening the awareness of risk, strengthening supervision, employees training and system control to deal with these problems.