bluuebunny/crossref_metadata_2025 huggingface dataset:
Adaptive Genetic Algorithm Verification Technology Driven by Functional Coverage
Authors: Shi Jing Kai , Wu Jian Lang , Wang Yi Bin
Published: September 2014

With the increasing of Chip integration and operation velocity, the gap between validation and design is becoming larger and larger. Now the focus is on generating efficient test vector. Different weights are appropriately set based on the relationships between the code logical depth of function test points and the test points covered by a test vector. A test vector generation method based on adaptive genetic algorithm is proposed. The experimental results show that the method can reduce the time of writing constraint files, auto-generate a stimulation, which is more efficient and targeted, and improve the efficiency and reliability of the chip functional verification.
Minimum Resolution Adjustment by PIC16F877 Pulse Width Controlling
Authors: Yang Fu , Zhang Wen Ming , Jiao Wan Cai
Published: September 2014

A method of minimum resolution adjustment based on the control of PWM is proposed. In the first part, the principle of PIC16F877 is analyzed and the signal period and the pulse width is calculated. the Two buttons on PIC16F877 are used to precise control the increment and decrement of output of PWM. The procedure of control of PWM is introduced at the last part. Using the method, the speed of rotation of the direct current motor can be precise controlled.
Deconstructing Superblocks Using Niceness
Authors: Yang Hao
Published: September 2014

Biologists agree that real-time methodologies are an interesting new topic in the field of electrical engineering, and cryptographers concur. In this paper, we argue the emulation of voice-over-IP, which embodies the typical principles of crypto analysis. We motivate new homogeneous symmetries, which we call Niceness.
An Effective Algorithm for Mining Forum Users Association Rules
Authors: Luo Jin Kun , Yuan Chang An , Peng Yu Zhong
Published: September 2014

Traditional algorithm for mining association rules need to scan the database many times when mining association rules, which are inefficient and time-wasting. In the light of the defects of traditional algorithm, this paper introduces the improvement of community partition algorithm into the process of association mining and uses the Internet forum users’ data of a university as the object of the new algorithm for mining association rules. The experiment shows that the new algorithm can help optimize the data association rules mining and reduces the times and time of scanning the database, so the mining efficiency is greatly enhanced.
Data Dispersal for Large Storage Systems
Authors: Zhang Ling , Zhu Shuai Shuai
Published: September 2014

Data dispersal mechanism is a group of basic working protocols for oceans of data processing and it plays an important role in enhancing system error correction and avoiding storage device failure. The data recovery availability of the client is the main design goal of data dispersal algorithms. The system storage and computing costs are also important factors for a data dispersal algorithm. In this paper, we discussed how to disperse data with the special properties as well as with acceptable system costs. We developed a universal approach to measure storage node availability based on state variables. After analyzed the existing data processing algorithms, we presented a new hybrid data dispersal algorithm using the above approach in detail evaluation. Two redundancy policies are adapted to storage node with different node availability. According to our analysis, this algorithm has its advantages in system storing and communication bandwidth costs.
A Case for Model Checking
Authors: Zhang Dong
Published: September 2014

In recent years, much research has been devoted to the exploration of write-back caches; however, few have studied the practical unification of local-area networks and Lamport clocks. Given the current status of atomic information, cryptographers clearly desire the exploration of the lookaside buffer. We describe new stable algorithms, which we call Rig .
The Study of Knowledge Pushing Technology Based on the Knowledge Context
Authors: Yuan Xiu Li
Published: September 2014

In order to meet the users’ demand of knowledge and use knowledge efficiently in the process of knowledge management,this paper adopts modeling methods of multilayer and multidimensional context tree to complete the establishment of the knowledge context tree, build the algorithm of the context entity similarity and realize the knowledge push, so that a kind of very valuable method for pushing knowledge has also been put forward.
The Securities Investment Research and Analysis Based on Genetic Algorithm
Authors: Zhu Ke Qing , Huang Jing
Published: September 2014

With the constant development of the securities market, securities investment is the core topic, and how to choose from a wide range of securities, is always a difficult problem in front of investors. This paper introduces the basic concept of genetic algorithm, to all parts of the genetic algorithm and genetic algorithm based model has made the detailed introduction. Combining genetic algorithm and portfolio, this paper puts forward the model based on genetic algorithm, the securities investment, through carried on the thorough research of securities investment model, and considering the modern portfolio theory in our country is practical, which is based on short-selling restrictions, transaction cost limit and the smallest unit of trading limit proposed portfolio selection model with investment restrictions.
Design and Principle Analysis of Wheel-Tracked Robot’s Mobile Mechanism
Authors: Tian Hai Bo , Ma Hong Wei , Zhang Yi Shu
Published: September 2014

Integrating the merits of wheeled and tracked mechanism, a robot’s mobile mechanism may have more adaptability in field environments. A kind of metamorphic mechanism with three configurations was proposed, which configuration transformation was analyzed and metamorphic equations on configuration transformations were put forward. Based on them, a wheel-tracked robot’s mobile mechanism was brought forward. The key component of the structure, locomotion-mode-changing unit, was synthesized. The robot’s prototype was made and the principle test was finished. The result shows that the built prototype can run by wheels or tracks, and transform itself successfully.
Research and Implementation of Text Classification Algorithm
Authors: Ren Jian Si
Published: September 2014

The development of Internet and digital library has triggered a lot of text categorization methods. How to find desired information accurately and timely is becoming more and more important and automatic text categorization can help us achieve this goal. In general, text classifier is implemented by using some traditional classification methods such as Naive-Bayes (NB). ARC-BC (Associative Rule-based Classifier by Category) can be used for text categorization by dividing text documents into subsets in which all documents belong to the same category and generate associative classification rules for each subset. This classifier differs from previous methods in that it consists of discovered association rules between words and categories extracted from the training set. In order to train and test this classifier, we constructed training data and testing data respectively by selecting documents from Yahoo. The experimental result shows that the performance of ARC-BC based text categorization is very pretty efficient and effective and it is comparable to Naïve Bayesian algorithm based text categorization.
Adjacent Vertex Distinguishing Distance Coloring of Grids
Authors: Tian Shuang Liang , Wang Qian
Published: September 2014

A-distance coloringof is said to be adjacent vertex distinguishing if this coloring satisfy for any pair of adjacent vertices and in, wheredenotes the set of colors that are received by the vertex and all neighbors of with respect to. The minimum number of colors necessary to adjacent vertex distinguishing-distance color, is denoted by. In this paper, we give the exact values of forand, where denotes the-dimensional grid.
Optimization Analysis and Design of Solar Water Heating System by Lifecycle Cost Savings Method
Authors: Bie Yu , Zheng Si Ming , Hu Ming Fu , Mao Wen Yuan , Fang Yong
Published: September 2014

The objective of this work is to do theoretically investigation about the solar fraction changing laws affected by some factors, so that we can do optimization for solar system designing, specially for household solar water heating system. The calculation of solar fraction was established on a more effective day-to-day simulation model rather than traditional method. It is found that the collector area and the water storage tank volume are the main influence factors. Economic analysis by means of lifecycle cost savings evaluation was carried out based on the calculated model.
Error Factors Analysis of Meshless Local Petrov-Galerkin Method for Fully Developed Magnetohydrodynamic Flow
Authors: Cai Xing Hui , Shi Cheng Ying , Xu Peng , Qiang Hong Fu
Published: September 2014

This paper analyzes the effects of some parameters of meshless local Petrov-Galerkin method for fully developed magnetohydrodynamic flow in rectanular duct on error of numerical simulation. These parameters includes: the size of local quadrature domain , the number of local domain in local quadrature domain, and the size of support domain. By a series of numerical simulations, the optimal values for these parameters which may cause a good accuracy of computation are determined.
Application of BP Neural Network in Products Forecast
Authors: Liu Cai Xia
Published: September 2014

BP neural network has parallel processing capabilities and a good approximation of the nonlinear mapping and gradually been widely used in the forecast. Because it is difficult to determine the BP neural network structural model, this paper presents the design ideas from six aspects. Combined with the practical example-mushroom classification, this paper presents the affect of the hidden layer, learning rate, training function on BP network and has some practical significance.
Automatic Data Acquisition and Analysis System of Electron Beam Distribution Based on LabVIEW Code
Authors: Shen Hong Li , Li Xian Xia , Huang Ming Guang , He Jun
Published: September 2014

Automatic data acquisition and analysis system is set up aiming at measuring and analyzing the electron beams distribution from electron gun and traveling wave tube. It can obtain electron beam parameters, such as three-dimension current density distribution, beam center, beam waist and total current etc. and it can be applied to space technology ranging from centimeter wave to millimeter wave. LabVIEW program is used to acquire data from the hardware equipment and deduce results from post-processing system. As a result, this study is significant to improve the design of electron gun and traveling wave tube in space application.
Adaptive Fault-Tolerant Congestion Control for Internet
Authors: Liu Lei , Zhang Feng Mei , Han Cun Wu , Bi Song , Sun De Hui
Published: September 2014

Existing Internet congestion control algorithms did not consider any faults. This paper presents a state feedback fault-tolerant congestion control algorithm which is based on adaptive and robust H∞ approaches. Simulation result shows that the proposed algorithm has good performance.
Analysis of Orbit Transfer Using Tracking Arc and Opportunity Arc of Spacecraft
Authors: Xu Jia Rui , Wu Cheng Yan , Han Qiang
Published: September 2014

The selection of the start time for the orbit transfer is not only directly related to its success or failure, but alse determines the fuel consumption and the time it needs. To solve this kind of problem, this paper based on the Lambert theorem studies the numerical solution of the transfer orbit whose starting point and spent time are both uncertain. Firstly, the problem of non-coplanar orbit transfer is converted into a coplanar one. Than, the concepts of the tracking arc of the chaser spacecraft and the opportunity arc of the target spacecraft are described. Meanwhile, the method of solving the tracking arc of the chaser spacecraft and the opportunity arc of the target spacecraft is put forward. Finally, through a concrete example, it’s found that there are close relationships among the tracking arc, the opportunity arc and the maneuvering capability of the chaser spacecraft. The results indicate that analyzing the problem of orbit transfer with the help of the tracking arc and the opportunity arc is easy and effective.
Integrated Control of Vehicle Chassis Based on PID
Authors: Dong En Guo , Lou Jie Xuan , Zhang Lei
Published: September 2014

In control system of vehicle chassis, two integrated control sub-systems of chassis have achieved some better results than a single sub-system control. However the two integrated sub-system control can not improve some dynamic performance on vehicle when other sub-system of chassis is disturbed. In order to improve vehicle dynamic performance of some sub-system, an integrated control method based on multi-system with suspension, steering system and brake system is designed. In the model, a 14-DOF vehicle model is used, and an integrated control method based on multi-system of chassis is designed in software of Matlab/Simulink with an integrated controller of PID. Simulation results show that the overall vehicle performance based on the three integrated control systems of chassis is better than those of two integrated control system.
On Felicitous Properties of Series Sun-Graphs
Authors: Yang Si Hua , Yao Bing , Yao Ming , Zhang Wan Jia , Chen Xiang En
Published: September 2014

Network structure is irregular, complex and dynamically evolving in time. Labelled graphs are used in researching areas of many networks, cryptography, computer science, biology, information etc. For simulating real networks we construct several classes of sun-like network models, and show that sun-like network models have can be strictly distinguished by felicitous labellings. We have several algorithms in polynomial time..
Research on the Optimization of Protective Door Structure in the Base of Genetic Algorithm
Authors: Xie Yong Liang , Ba Zhen Wei , Wang Xiao Hui , Wang Chao
Published: September 2014

In the base of genetic algorithm, the article make a lot of Analysis in the structure parameter optimization of composite material interbred protective door, which use the rational code and genetic work ,so that structure change light. Use the optimize algorithm to devise the rational structure parameter of the composite material interbred protective door ,it change light and complete the goal of structure optimization and also can satisfied the military target.
The Research of Particle Learning Filter Based Conflict Detection Algorithm in Unknown Wind Condition
Authors: Zhai Wen Peng , Wu Hao , Ma Lan
Published: September 2014

Unmanned aerial vehicles with the characteristics of zero casualties, low cost and good mobility, have broad application prospects in modern warfare and civilian areas. Conflict detection technology of UAV in an uncertain environment is prerequisite that multi-UAVs finish a task in the same airspace. In this paper, with unknown wind condition, the joint estimation of both the path and unknown parameter is presented in the risk of conflict detection algorithm. First, in the two-dimensional Cartesian coordinate system, the aircraft kinematic model under the influence of unknown wind is established, a particle learning filter method to estimated the flight track and the wind speed vector. Secondly, with the minimum horizontal and vertical safe distance, the collision risk probability of two planes in three-dimensional space is established and calculated. Finally, with a numerical example based on Matlab, the probability of collision risk is calculated, which verified the model is reasonable.
The Method of Failure Data Processing Analysis of Filling System in Launching Site Based on Bayesian Method
Authors: Zhao Ji Guang , Zhang Yang , Cui Bao , Hao Jia Jie
Published: September 2014

The high reliability and the short times carried of quantitative risk assessment of Filling system in launching site, the failure data is small sample data. In this paper, we will focus on these small sample data and take processing analysis. A method based on Bayesian method of failure data processing analysis of Filling system has been proposed, which firstly analyzes the characteristic of failure data of Filling system. Secondly, we classify the failure data into running failure data and demanding data according to the data types, and further analyze various uncertainty distributions under this two kinds of data type. What’s more, we use Bayesian method to solve the problems of various failure data. Lastly, we combine the real circumstance of Filling system and take the Filling system as example, and choose the filling pump, shut-off valve and pneumatic ball valve these three different failure types to use Bayesian method to analyze, and obtain various prior distributions and posterior distributions of different failure equipment, and give the simulation results.
A New Method to Generate Test Cases by Genetic Algorithm
Authors: Liu Yu , Wang Feng Qin , Han Qiu Feng
Published: September 2014

Because of the powerful capability of global searching and robustness of genetic algorithm, so it can be well applied in the automated generation of test data.Establish a module to generate test cases automatically by genetic algorithms.We can find that genetic algorithm guide the generation of the test data by the evaluation function according to the constraints of the path.It will not only avoid the blindness of the data searching process with higher efficiency,but also need not to consider the matching problem of the generated test data and test sequences.It can even run effectively relying only on the fitness of the point in the searching space supplied by the evaluation function.This advantage makes it a powerful searching algorithm on the type of random searching.
A New Iterative Modularity-Based Method for Graph Clustering on Scalable Networks
Authors: Cui Yi Tong , Zhang Bing Yi , Rao Guo Zheng
Published: September 2014

Due to the advancement of technology, modern networks such as social networks, citation networks, Web networks have been extremely large, reaching millions of nodes in a network. But most of the existing graph clustering algorithms can only tackle with small or medium-size networks. In this paper, we introduce a new method which can achieve high graph clustering quality for large scale networks by optimizing the modularity function. It is based on the iterative idea and takes good advantage of the exsiting multilevel local search heuristics. After introducing this modularity-based method, we evaluate its performance by applying it to several well-known network datasets. With a cost of more but acceptable time, it outperforms the best algorithms in the literature in the case of modularity optimization quality.
A Novel Method for Model Based Diagnosis Using Case Based Reasoning
Authors: Lin Hai
Published: September 2014

In this paper, we propose a method for model based diagnosis using case based reasoning. This method can effectively use results from previous diagnosis, other than do everything from scratch. According to our analysis, this method has lower time complexity than other methods. People have attempted to use case based reasoning to do abductive diagnosis. We propose a better mechanism for case based reasoning and model based diagnosis to interact with each other so that it can be used for diagnosis.
Agricultural Machinery Resources Based on Time-Windows Model
Authors: Li Yue Li , Wang Chao
Published: September 2014

To meet the scheduling demands of dispatching the agricultural machinery to the reasonable farmlands, time-windows based temporal and spatial scheduling model for agricultural machinery resources was built,which serialized decision-making processes and got optimal solutions for each process.The experiment results showed that the model could perform well in practice,which improved the management and working efficiency of the agricultural association.
Research on Quantitative Assessment Method of Power Transformer Supervision Based on Extensible Theory
Authors: Xu Yu Qin , Zhan Xiang Ling , Ren Zheng , Li Tong , Qiao Guo Hua , Xie Qing
Published: September 2014

The quantitative classification of transformer supervision can improve the quality of transformer supervision. For the contents of transformer supervision, this paper establishes an index system of transformer supervision. Example results show that the extension matter-element theory which is applied to transformer supervision quantitative evaluation is more reasonable. According to the categories of transformer supervision, this paper quantifies the uncertainty and builds the evaluation system of transformer supervision. It realizes the evaluation of transformer supervision and gets the key factors which influence the transformer supervision. This evaluation system is conducive to guide the transformer supervision to be more scientific and effective.
Research on IGES Graphic Input and Display Technology Based on Feature Information
Authors: Zhang Ying , Shi Xin
Published: September 2014

In order to input graphics of NC machining parts efficiently, now take the turning IGES rotary parts graphic input for example, it introduced the manual input and methods of obtaining the feature information of the parts generated from UG5.0 IGES file. The feature information contains geometry information (such as line, arc, spline curve, etc) and process information (such as size tolerance, form tolerance, technical conditions and the title bar, etc). In VC++6.0, it set up three modules, that’s the IGES file information input, data processing and data output. Feature extraction and input were realized by using intersection algorithm of graphic elements. Through data processing module, the read pixel information could be transformed into the feature information of the parts, generating the system data structure. OpenGL technologies were used to realize the IGES graphics display, finally offering supports for NC turning visualization of virtual machining.
Cross Warehouse Scheduling of Logistics Distribution and Cycle Re-Claimer Based on Heuristics Algorithm
Authors: Ma Rong Hua
Published: September 2014

In the uncertain environment, the cycle re-claimer and logistics distribution cross warehouse scheduling is important and it should be optimized. The mathematical programming model is constructed, and the proposed two-stage heuristic algorithm is proposed, the optimal solution of heuristic algorithm is used as the initial value. And the taboo search algorithm is designed to improve the initial solution. In order to verify the availability of the method, the Monte Carlo simulation method is used for numerical experiment. The experiment results show that the new method can solve the suboptimal solution which close to the optimal solution in fast, and the taboo searching algorithm can improve the solution of heuristic algorithm, it has significantly improvement performance for new method, and it has good application value in practice.
Research on Optimal Vehicle Path in Intelligent Transportation
Authors: Yu Wen Ming
Published: September 2014

The rapid development of economy and science and technology is quite obvious, which makes cars becoming more and more widely into the general family life. With the rapid development of economics and technology; the number of vehicles has largely increased. In this paper, there is the basic organizational framework for intelligent transportation, intelligent transportation network proposed model and its data storage structure, and the important influence on optimal path trajectory intelligent transportation planning. This paper analyzes intersection road network in the distribution based on computer graphics language, type and grade roads. The dynamic mathematical model of single vehicle is used vehicle planning algorithm based on period, effectively avoided the traffic road, reduce vehicle travel cost, improve the real-time effect and accuracy of the vehicle dynamic path. We hope the results and researches could combine with reality in order to reduce traffic congestion.
Research on the Dominate Transport Distance of High-Speed Railway
Authors: Ma Hai Tao , Zhu Xiao Ning , Kang Liu Jiang
Published: September 2014

High-speed railway is recognized as a fast, safe, comfortable, low-power, and large volumes of new transportation mode. This paper proposes a dominate transport distance model with the consideration of origin-destination distance, travelling purpose, income, time value and transport preference. A numerical experiment indicates that km is the most attractive distance for the high-speed railway. In km, the air plane occupies most passenger market. The high-speed railway has no advantage when the distance is longer than 1600 km.
Posture Correction Technique Based on Visual Analysis
Authors: Di An
Published: September 2014

In basketball training, if the posture of basketball player is deviated, great impact will be brought to basketball training. Therefore, this paper presents a posture correction technology based on vision analysis. A lot of computer vision image are collected in basketball training, this images are enhanced to improve definition of image, with the high-quality images to identify wrong posture, and compare with standard posture to achieve posture correction in basketball training. Experimental results show that the proposed algorithm for posture correction in basketball training can improve the accuracy of correction, so as to meet the actual needs of basketball training.
Construction of Computer-Aided Design System for Shoes
Authors: Li Ming Hui , Liu Xu
Published: September 2014

Based on the shoes design methods and processes of analysis and summary, the computer-aided design as a design tool to intervene to determine concept , design performance and design verification stages. TO build a market to meet customer needs as the guiding ideology of the computer-aided design system shoes finally.
Research on Stereo Image Acquisition Technology of 3D Printing
Authors: Cheng Yao , Chen Guang Xue , Chen Chen , Yuan Jiang Ping
Published: September 2014

In the process of 3D printing, stereo image acquisition is the basis and premise of 3D modeling so that it’s important to study the acquisition methods and techniques. This paper will study the process of point cloud data acquisition of a hand model by using handheld laser scanner REVscan, and processed by the reverse engineering software Geomagic Studio. Using the object model captured, we can greatly improve the efficiency and accuracy, as well as reduce the cycle of the 3D printing. This will help achieve the transmission of 3D printing data without geographical restrictions, in which truly realize the concept "What You See Is What You Get".
Three-Dimensional Modeling of MVT Lead-Zinc Deposit in Western Hunan and its Application
Authors: Wang Kun , Xiao Ke Yan
Published: September 2014

In order to study the evolution and metallogenic regularity of MVT lead-zinc deposits in western portion of Hunan province (China), two sets of three-dimensional model are established by Minexplorer software: 3D model in typical deposit and 3Dmodel on regional scale. On the basis of synthetic analyses of two sets of models, the further prospecting should be focused on the north part of ore-bearing layer along the Huayuan-Zhangjiajie fault belt. It is effective to observe occurrence and distribution characteristics from the 3D geological model, and to provide the basis for further exploration prospecting of the concealed deposits.
The Application of Multi-Agent in Emergency Events of Metro Station
Authors: Wang Ya Tao , Cai Guo Qiang , Wu Xin Yu
Published: September 2014

The question of metro safety is one of the hot areas of current research. Subway accident will not only cause a lot of casualties, but also caused widespread traffic jams, to which is very important to pay close attention. Through the analysis of potential safety hazard of metro interchange station and the distinguishing feature of the technology of multi-agent, this thesis pose a new application of multi-agent in emergency events of metro station.
Evaluation of Cyberwar's Synthetical Ability Based on Projection Pursuit Method
Authors: Cao Su Na , Tian Jia Ping , Dong Yu Cai , Chen Ping , Jin Qi
Published: September 2014

An evaluation of cyberwar's synthetical ability based on projection pursuit method is discussed in this article. The method is adopted to transform the main indexes which impact on cyberwar's synthetical ability into one-dimensional projection value and give the order of evaluation of every countries' cyberwar's synthetical ability, at the same time, get the weight of every main index. This article supply a new idea to the evaluation of cyberwar's synthetical ability.
A Low Energy Clustering Routing Protocol Based on the Partition
Authors: Xu Jing Feng , Xu Feng , Meng Qi Lu
Published: September 2014

In wireless sensor network (WSN), LEACH protocol is a typical representative of the hierarchical topology control protocol. Compared to plane multiple hops routing protocol, it can significantly prolong the life cycle of the network. But LEACH protocol having the problem of uneven distribution at the cluster head election, this paper proposes a low energy adaptive clustering routing protocol based on the partition. On the basis of the partition, cluster heads are selected by the energy of nodes and their location information. Simulation experiments show that the proposed protocol can be more effective than LEACH to balance the energy and improve the life cycle of the network.
The Framework Design of Wisdom Campus Based on the Network
Authors: Chen Wan , Zhang Zhi Hong , Liu Zhong Jing
Published: September 2014

The development of modern network and information technology makes the construction of wisdom campus based on the network become an important topic in the development of education information. This paper constructs the overall framework of intelligent campus based on the perception layer, network layer, data layer, service layer, application layer, terminator layer and user layer. The framework’s functions contain information collection, network integration, data integration, service integration and unified portal service. At the same time, it uses information technology standard system and security guarantee system as a support system and uses the cloud computing and Internet of things as the key technology to preliminary study on the construction of wisdom campus based on network.
Study on the Construction of Campus Smart Card on Wisdom Campus Platform
Authors: Zhang Zhi Hong , Chen Wan , Liu Zhong Jing
Published: September 2014

In this paper, we combine the practical application of my school digital campus construction, explores the construction of campus smart card under wisdom campus-based platform in our college. Select non-contact logic encryption IC card. Analysis the overall objectives and system functional requirements of the wisdom campus smart card system, present a system function chart. Finally, combine with cooking food department, which is the characteristic profession of our tourism school, system analysis and design a training room management subsystem in campus smart card system.
An Anti-Piracy Method Based on Encryption and Dynamic Loading for Android Applications
Authors: Huo Mei Mei , Wu Jian Zhong , Cai Jian Ping , Long Zhi Yong , Sun Lin
Published: September 2014

App pirate remains a serious threat to the emerging mobile app ecosystem, especially in the Android Market. In this paper, we propose an anti-piracy method based on encryption and dynamic loading for Android applications. The basic idea of the method is to separate dex file from the original apk file and encrypt it, then hidden the dex file into resource, finally use a shell dex file to replace the original dex file. When apk is installed, the shell dex file begins to run and release the oringinal dex file and dynamic loading into memory. Once loaded success, shell code start the original apk activity through startActivity. Android app developers can use this method to protect their apps and the method is simple and convenient.
The New Key-Stream Generator Based on the OFB Mode of AES
Authors: Shi Hui , Lu Jian Wei , Ji Yu Feng , Wu Chao , Gong Jing , Deng Yuan Qing
Published: September 2014

The key-stream generator is the most important algorithm component of the stream cipher and the security of the stream cipher is based on the property of the key-stream generator. At the present, it is still an important development direction of the stream cipher algorithm that the high performance key-stream generators are constructed with complex block cipher algorithms. This paper puts forward the new type of the key-stream generator based on the AES algorithm. This method is based on the OFB mode of the AES algorithm, combined with the variable-step feedback shift. Then the paper analyses the randomness of the key-stream produced by the new key-stream generator. This new key-stream generator really improves the cryptographic properties of the key stream generator and to enhance the security of stream cipher effectively.
Research on Usage Intention of Community Information System
Authors: Li Wei Ping , Yang Jie , Kim Ki Su , Sun Wei
Published: September 2014

With the substantial investment from government and enterprises, the community information system is playing a more and more important role in citizens’ life. It is therefore important to measure the usage intention of CIS system from the different perspectives. By using theory of planned behavior, this paper wants to derive useful variables to address the problem of the low usage intention of CIS by citizens. The primary purpose of this study was to examine beliefs contributing to the public’s intention behavior to use community information system in their daily life. The secondary purpose was to investigate the efficacy of the decomposition of planned behavior model for such behaviors.
Research on Full-Automatic Intelligent Hydraulic Lifting Column System
Authors: Wang Xian Quan , Zhu Gui Lin , Yu Yao , Zhang Hong Guang
Published: September 2014

In view of the current low lifting speed of the hydraulic lifting column, simple control function and other unfavorable factors, a effective theory is proposed. Such theory combining with exciting lifting technology employs the advanced PLC core chip with reliable characteristics to establish a control system. The control manners include wire mode and wireless mode. After experiment verification, the proposed control system can realize lifting function of the hydraulic column with various control mode. The proposed control system can be applied to traffic routes for safety. The purpose is to improve the traffic intelligentialize, avoid traffic accidents, and guarantee the route smooth.
A Software Design Model Based on Big Data
Authors: He Zhong Lin , Xiao Xiao Hong , He Yu Hua
Published: September 2014

Big data is mainly for analytic applications, which puts high requirements on data processing ability instead of computational accuracy. In this environment, software engineering-based methods should be carried out with the goal of data processing and computation. To adapt to the development of various analytic applications in big data era, this paper provides a software design model based on big data, and at the same time, analyzes compiler mechanism of big data programming language.
Research of Network Information Platform Construction of ERP System in Manufacturing
Authors: Zhang Jin Hai
Published: September 2014

Computer network system is a basis for enterprises to implement informatization construction , to a good network environment, System suitability, and security features of the system. Facing growing international and domestic competitive pressure, companies propose the development of a comprehensive information management strategy; in the process of enterprise Informationization construction, very important thing about the construction of network study environment for enterprises. Papers in reconciling efficiency, robustness, and security of the system on the basis of focusing on system "against" and "applicable" were studied.
Varying Rotation Speed Bearing Fault Features and Extraction Method Based on Wavelet Packet
Authors: Wu Bin , Yu Shan Ping , Luo Yue Gang , Feng Chang Jian
Published: September 2014

When bearing rotates, it comes with elastic hydrodynamic lubrication effect. Interaction between the effect and the bearing vibration leads to the change of lubricant film thickness, thus, contact stiffness of contact pair changes along with the rotation speed of the bearing, and then the resonance frequencies of the bearing system changes according to the rotation speed. In addition, the impact signal of varying speed bearing damage point no longer has the periodic characteristics. Based on the analysis of the bearing failure mechanism, this paper proposed a varying speed bearing vibration signal fault model, and also utilizes wavelet packet to extract the bearing fault signal by means of a variable speed rolling bearing vibration experiment table.
Research on QoS Guarantee Technology for Intercom System Based on SIP
Authors: Li Zhen , Yang Qian Yi , Zhou Yi Chen , Ren Hui
Published: September 2014

Theatre intercom system based on SIP has solved the defects of traditional theater scheduling, but it doesn't guarantee the quality of service (QoS). This paper introduced the key technology for SIP-based theatre intercom system, including the fundamentals of VOIP and signaling technology. We analysed the main factors influencing QoS, summarized correlative techniques improving QoS for theatre intercom system, including QoS relevant protocols and QoS guarantee technology on terminals. These technologies can be synthetically used, so as to improve the reliability of theatre intercom system.
Robust Integrated Design for Vehicle Chassis Based on Uncertainties
Authors: Zhang Lei , Lou Jie Xuan , Dong En Guo
Published: September 2014

In order to improve overall vehicle performance and decrease movement deviation caused by uncertainties from automobile chassis, a robust vehicle chassis model is built with steering system, suspension system and braking system. In the model, the length of the steering trapezoid arm, the bottom angle of trapezoid mechanism, inclination angle, caster, camber and toe-in are defined as controllable variables, and load, driving force, steering torque are defined as noise factors. The optimum objectives include the maximum turning angle error of steering mechanism, the maximum braking sideslip and the maximum swing angle of front wheel on bumpy road. Taguchi method is applied to solve the robust result for automobile chassis model. Compared that the variances of objective values are decreased with the same noise factors and the robustness of sub-systems of chassis is improved.
Multimedia Technology of Digital Tourism Based on Android System
Authors: Zhang Jing
Published: September 2014

This paper uses the principle of multi-objective optimization and introduces the digital new media technology into the travel management process and establishes multi-level optimization learning model and VB algorithm routine of tourist evaluation. In order to verify the validity and reliability of the algorithm and procedure, this paper uses the VB programming software to develop mobile phone interface of digital multimedia tourism management and develops simulation system of tourist behavior using Android system software. Using visitor satisfaction management comprehensive evaluation model, this paper calculates the influence of guest evaluation on management of different tourists perceive behaviors. It also calculates comprehensive scores of multi-order and multi-stage tourists’ evaluation which provides technical support for the research of computer innovation model of tourism management.
Research on Action Design System Based on VB.NET Technology
Authors: Xu Lin , Lei Wei , Xu Wei Min
Published: September 2014

With the continuous development of internet technology, its application scope has been widely. In the field of education, it is becoming more and more mature and forming a complementary relationship with traditional education. In this paper, through t computer.NET platform architecture, we analyze the composition and running mechanism of.NET structure. Based on this we construct the exact image recognition method with block matching, which matches the martial arts action image. We use VB.NET internet technology to construct the martial arts teaching action design system, and use simulation technology to test. The results show that the system can meet the needs of martial arts teaching, and has strong practicability.
A Web Services Security Policy Description Model
Authors: Zeng Hao , Zhao Yong Wang , Ma Dian Fu
Published: September 2014

With the rapid development of web services technology, the security policies defined in WS-SecurityPolicy are widely used for expressing security properties, capabilities, constraints and requirements of web services. It is well-known that security policies are crucial in the negotiation phase of service discovery and selection. However, such security policies are hard to understand and extremely error-prone, due to the complexity of the WS-SecurityPolicy specification. At the same time, because the WS-SecurityPolicy is described by natural language, there have ambiguity problem. These problem seriously hindered the development of web services policy. Therefore, this paper proposes a web services security policy description model to describe accurately and clearly security policies. The security policy model employs the formal modeling method to convert the policy assertions into the security rules.
Research of Network Virtualization in Data Center
Authors: Tan Xiao Long , Wang Wen Bin , Yao Yu Qin
Published: September 2014

With the rapid grow of the volume of data and internet application, as an efficient and promising infrastructure, data center has been widely deployed .data center provide a variety of perform for network services, applications such as video stream, cloud compute and so on. All this services and applications call for volume, compute, bandwidth, and latency. Existing data centers lacks enough flexible so they provide poor support in QOS, deployability, manageability, and defense when facing attacks. Virtualized data centers are a good solution to these problems. Compared to existing data centers, virtualized data centers do better in resource utilization, scalability, and flexibility.
Development of a New Routing Protocol Based on GPSR for Wireless Sensor Networks
Authors: Xing Cui Fang , Yang Lin , Han Qing Long
Published: September 2014

GPSR routing protocol is incapable of controlling the energy consumption of single node, causing network monitoring loophole. In the current study, a new routing algorithm NEWGPSR was developed from by original GPSR protocol with the introduction of LEACH clustering thought and the improvement of its head selection algorithm, appending active excitation mode, the heuristic rules and local optimization strategy, improving surrounding forward mode.Results of simulation analysis using NS3 platform showed that the new NEWGPSR algorithm was capable of effectively reducing system energy consumption, prolonging the network life cycle, and improving the performance of the entire network.
Research and Design on Multilevel Secure Database Inference Control
Authors: Zhao Hai Yan , Liu Rui Guang , Liu Xu Gang
Published: September 2014

This paper describes the common inference channel. By adding inference control module in the database design and operation stages to detect and control inference, our research aimed at improving the security of the database.
Research on Information Resources Sharing Patterns Based on Cloud Computing
Authors: Yang Wen Jing , Luo Yong Jian , Zhao Hai Yan , Li Xiao Ting
Published: September 2014

Based on the principle and characteristics of cloud computing, we put forward the detailed introduction of the constitution and function of cloud information resource flow architecture. Therefore, the problems of network source information management, supervisory control, exploitation and utilization can be solved.
Research on Relay Node Placement Based on Hybrid Greedy Optimization Algorithm in Wireless Sensor Networks
Authors: Xu Hui , Zhang Hang
Published: September 2014

In this paper, we propose a hybrid greedy optimization algorithm for (WSN, wireless sensor networks) and then design the relay node layout system. The test results demonstrate that the hybrid algorithm greatly reduces the number of nodes required to avoid wasting too much unnecessary relay node.
Security Research of the Mobile E-Government Terminal
Authors: Guan Shao Yun , Fan Ye , Lv Hong Lue
Published: September 2014

Mobile e-government can help government provide citizens with a more convenient and efficient service. It is the inevitable trend of future development. However, due to the particularity of the mobile terminal itself, security threats they face are more complex with a higher risk. If security issues are not dealt with, it will cause the entire e-government security, and even affect the image of the government and national security. This paper firstly analyzes the main threats faced by the mobile terminal, then elaborates e-government mobile terminal security policies from prevention technology, safety management and personnel to reduce security risks, so that mobile government can play a more active role.
Analysis of College Students' Online Business in China
Authors: Abuduaini Abudureheman , Aishanjiang Nilupaer
Published: September 2014

With the booming development of C2C e-commerce platforms such as Taobao, and facing the employment pressure and the huge market demand, many college students have started to run on line business. College students set up online shop as a new approach for own a business, brings opportunities for contemporary college students, but at the same time, there are risks and straits. This article analyzes the advantages and disadvantages of college students’ opening online shop and proposes some useful suggestions for college students to set up successful online business.
Graphical Meta-Model Construction Method of Embedded Control System of Specific Areas
Authors: Meng Ling Jun , Wu Xiang Hu , Qu Ming Cheng
Published: September 2014

An embedded control system development methodology based on model-driven development method was emerged, the basic features and architecture of the embedded control system of specific areas were analyzed and summarized, and the key elements of this specific domain were identified and extracted. Afterwards, a visible element modeling technique was used to build a directly graphical model system, and this kind of embedded modeling technique based on model-driven was applied to realize a model of embedded Robot control system design. As a result, the Robot source model of this system was obtained.
Research on Storage Strategy of Unstructured Small Files in HDFS
Authors: Wu Long Tao , Wang Tie Ning , Hu Hai Rong
Published: September 2014

With the wide use of HDFS and increasing scale of small files, problems of HDFS in small files storage gradually exposed. Thus the article put forward a storage strategy of unstructured small file based on the type of file, and optimized the architecture of cluster to save memory and improve the efficiency of file access. Through experiment, the strategy is proved to be effective and reliable.
Design of Extended Event Service Model Based on CORBA
Authors: Zhao Chun Xi
Published: September 2014

In a distributed system, the event service reflects the mechanism between the sender and the recipient of the asynchronous event or flexible group communication. Based on the analysis of the CORBA event service model, the model for the limitations that exist, on the basis of the original model were effectively extensions.