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Journal receives papers in continuous flow and we will consider articles from a wide range of Information Technology disciplines encompassing the most basic research to the most innovative technologies. Please submit your papers electronically to our submission system at http://jatit.org/submit_paper.php in an MSWord, Pdf or compatible format so that they may be evaluated for publication in the upcoming issue. This journal uses a blinded review process; please remember to include all your personal identifiable information in the manuscript before submitting it for review, we will edit the necessary information at our side. Submissions to JATIT should be full research / review papers (properly indicated below main title).

Journal of Theoretical and Applied Information Technology
January 2013 | Vol. 47 No.2

Title:	AN ENHANCED RULE APPROACH FOR NETWORK INTRUSION DETECTION USING EFFICIENT DATA ADAPTED DECISION TREE ALGORITHM
Author:	G.V.NADIAMMAI and M.HEMALATHA
Abstract:	Data mining has been used extensively and broadly by several network organizations. Intrusion Detection is one of the high priorities & the challenging tasks for network administrators & security experts. Intrusion detection system is employed to protect the data integrity, confidentiality and system availability from attacks. IDS use the data mining techniques to analyze the resources from the database over a network. It is also necessary to develop a robust algorithm to generate effective rules for detecting the attacks. In this paper, Classification based optimization algorithms have been used to detect attacks over KDD CUP 99 dataset. Based on this dependency, an improved Efficient Data Adapted Decision Tree algorithm is proposed to overcome the drawbacks of the existing algorithm. The experimental results clearly show that the proposed EDADT algorithm achieved higher accuracy, less alarm rate & capable of detecting new type of attack efficiently.
Keywords:	Machine Learning, Data Mining, Intrusion Detection, Classification Algorithms, Efficient Data Adapted Decision Tree (EDADT) Algorithm, Optimization Technique, KDD CUP 99 Dataset
Source:	Journal of Theoretical and Applied Information Technology pp 426 - 433 Vol. 47. No. 2 -- 2013
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Title:	ARTIFICIAL BEE COLONY ALGORITHM, ITS VARIANTS AND APPLICATIONS: A SURVEY
Author:	ASAJU LA'ARO BOLAJI, AHAMAD TAJUDIN KHADER, MOHAMMED AZMI AL-BETAR, MOHAMMED A. AWADALLAH
Abstract:	Artificial Bee Colony Algorithm (ABC) is nature-inspired metaheuristic, which imitates the foraging behavior of bees. ABC as a stochastic technique is easy to implement, has fewer control parameters, and could easily be modify and hybridized with other metaheuristic algorithms. Due to its successful implementation, several researchers in the optimization and artificial intelligence domains have adopted it to be the main focus of their research work. Since 2005, several related works have appeared to enhance the performance of the standard ABC in the literature, to meet up with challenges of recent research problems being encountered. Interestingly, ABC has been tailored successfully, to solve a wide variety of discrete and continuous optimization problems. Some other works have modified and hybridized ABC to other algorithms, to further enhance the structure of its framework. In this review paper, we provide a thorough and extensive overview of most research work focusing on the application of ABC, with the expectation that it would serve as a reference material to both old and new, incoming researchers to the field, to support their understanding of current trends and assist their future research prospects and directions. The advantages, applications and drawbacks of the newly developed ABC hybrids are highlighted, critically analyzed and discussed accordingly.
Keywords:	Artificial Bee Colony Algorithms; Nature-Inspired Met Heuristics; Swarm Intelligence Algorithms; Optimizations
Source:	Journal of Theoretical and Applied Information Technology pp 434 - 459 Vol. 47. No. 2 -- 2013
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Title:	OPTIMAL PLACEMENT OF TCSC USING LINEAR DECREASING INERTIA WEIGHT GRAVITATIONAL SEARCH ALGORITHM
Author:	PURWOHARJONO, MUHAMMAD ABDILLAH, ONTOSENO PENANGSANG, ADI SOEPRIJANTO
Abstract:	This paper represents the improvement of the Gravitational Search Algorithm method (GSA) using Linear Decreasing Inertia Weight (LDIW) which is implemented to determine the optimal placement of TCSC locations and the best rating of the TCSC in the standard limit on the electric power transmission lines. TCSC is one of FACTS devices which can perform the compensation of the power system. GSA method is a new metaheuristic method inspired by Newton's laws of gravity and mass motion. LDIW-GSA is used to control the speed of the particles on the GSA, so as to improve the performance of the GSA method. The implementation of LDIW-GSA used the Java-Bali 500 kV power system. Before optimization, TCSC load flow results indicated that there was 297.607MW of active power losses and 2926.825 MVAR of reactive power losses. While the results of TCSC load flow was 279. 405 MW of active power losses and reactive power losses was 2082.203 MVAR after optimization using GSA standard. It was obtained 278.655 MW of active power losses and active power losses of 1768.374 MVAR with the use of LDIW-GSA. It was better to be used to minimize power losses in transmission line and also it can improve the value of the voltage in the range of 1 ± 0.95 compared to GSA standards prior to placement optimization of TCSC.
Keywords:	Gravitational Search Algorithm (GSA), Linear Decreasing Inertia Weight (LDIW), FACTS device, Thyristor Controlled Series Capacitor (TCSC), (AHPS)
Source:	Journal of Theoretical and Applied Information Technology pp 460 - 470 Vol. 47. No. 2 -- 2013
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Title:	REMOVAL OF HIGH DENSITY IMPULSE NOISE THROUGH MODIFIED NON-LINEAR FILTER
Author:	T.SUNILKUMAR, A. SRINIVAS, M. ESWAR REDDY and Dr. G. RAMACHANDRA REDDY
Abstract:	A New algorithm for the restoration of gray scale and color images are highly corrupted by impulse noise (salt and pepper noise) is proposed in this paper. This proposed algorithm shows better results than the Standard Median Filter (SMF), Decision Based Median Filter (DBMF), Modified Decision Based Median Filter (MDBMF), Progressive Switched Median Filter (PSMF) and Modified Decision Based Unsymmetrical Trimmed Median Filter (MDBUTMF). The proposed algorithm replaces the noisy pixel by trimmed median value when other pixel values, 0’s and 255’s are present in the selected window and when all the pixel values are 0’s and 255’s then the noise pixel is replaced by increasing window size and finding trimmed mean based on algorithm. Different grayscale and color images are tested by using the proposed algorithm and found to produce better Peak Signal to Noise Ratio (PSNR) and Image Enhancement Factor (IEF)
Keywords:	Image Enhancement Factor, Trimmed Median, Trimmed Mean, Restoration, Peak Signal To Noise Ratio
Source:	Journal of Theoretical and Applied Information Technology pp 471 - 478 Vol. 47. No. 2 -- 2013
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Title:	SECURING INTERNET APPLICATIONS USING HOMOMORPHIC ENCRYPTION SCHEMES
Author:	YOUSSEF GAHI, MOUHCINE GUENNOUN, ZOUHAIR GUENNOUN, KHALIL EL-KHATIB
Abstract:	The trend towards delegating data processing and management to a remote party raises major concerns related to privacy violations for both end-users and service providers. These concerns have attracted the attention of the research community, and several techniques have been proposed to protect against malicious parties by providing secure communication protocols. Most of the proposed techniques, however, require the involvement of a third party, and this by itself can be viewed as another security concern. In this paper, we present a survey of different techniques that aim at secure applications, services, and routing protocols. We exhibit practical and popular systems/models and highlight the lack of privacy and confidentiality support in them. Furthermore, to avoid security breaches, we propose adopting an innovative approach that depends on data sorted, managed, and processed in encrypted form at the remote servers. To realize such an approach, the encryption cryptosystem must support both addition and multiplication over encrypted data. Finally, we highlight some novel tracks helping in the construction of a fully secure protocol based on the fully homomorphic encryption schemes.
Keywords:	Internet Applications, Security, Homomorphic Encryption Schemes, Cryptography, Security
Source:	Journal of Theoretical and Applied Information Technology pp 479 - 495 Vol. 47. No. 2 -- 2013
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Title:	THE FACTORS OF INFLUENCING ACCEPTANCE OF SOFTWARE AS A SERVICE MODEL, TOWARD SALES FORCE AUTOMATION SYSTEM, ON PHARMACEUTICAL COMPANY IN INDONESIA
Author:	A. SUHENDRA, A.B. MUTIARA, H.N. LAILY
Abstract:	One of the business models of Cloud Computing that provides internet-based applications, the so-called Software as a Service (SaaS), allows users to get an easy way because the infrastructure has already been provided by the application vendor. The many uses of SaaS model among others is on Sales Force Automation (SFA) application, which is widely used by companies to monitor the performance of the mobile team serving in the field in order to increase sales/service, and another one which is the focus of this thesis is the one used in pharmaceutical companies. However, the acceptance of SFA system with SaaS model on pharmaceutical companies in Indonesia is not too encouraging. Therefore, this study investigated factors that influence the SFA system with SaaS model on pharmaceutical companies in Indonesia, using the Technology Acceptance Model (TAM). The variables studied were Perception of Usefulness, Perception of Ease to Use, Perception of Risk, Perception of Price, Visibility, and Social Influence against the Attitude towards Using SFA System with SaaS Model. The study took samples from the decision makers of pharmaceutical companies in the Greater Jakarta and Bandung, with the number of valid questionnaires of 50 respondents. The results obtained with multiple regression is that the significant factors influencing the acceptance of SFA system with SaaS model is the Perception of Price factor and the Social Influence factor, with each test value for p-value Significant coefficients of 0001 and 0 (p-value <0.05). The test results also suggested that other factors studied do not significantly influence the attitude towards the use of the SFA system with SaaS model.
Keywords:	Cloud Computing, SFA, SAAS, Acceptance Model
Source:	Journal of Theoretical and Applied Information Technology pp 496 - 503 Vol. 47. No. 2 -- 2013
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Title:	A SYSTEM DEVELOPMENT METHODOLOGY FOR ERP SYSTEM IN SMEs OF MALAYSIAN MANUFACTURING SECTORS
Author:	YOUSEF KHALEEL, RIZA SULAIMAN
Abstract:	Improvement in the effectiveness and competitiveness of Malaysian SMEs (Small Medium Enterprises) in the global market is very important, because these SMEs an essential role in the Malaysian economic growth. The ERP (Enterprise Resource Planning) is a significant tool to increase the effectiveness and competitiveness the SMEs. The ERP enhances the efficiency of the whole business operations in an organization and increase the optimal income. Nevertheless the due to various reasons the implementation of the ERP has not been successful in many organizations and hence its success rate of implementation is quite low. A lot of researchers have identified the factors that constitute towards the successful implementation of the ERP. It has been identified that majority of the SMEs tend to refrain from adopting the ERPs due to the cost and complex implementation factor. In this paper, the authors have developed and proposed an efficient methodology that enables successful implementation of ERP system in SMEs. The aim of this paper provides a platform to accomplish the objectives of ERP system. However for the purpose developing ERP systems to suit the needs of Malaysian manufacturing SMEs a new methodology is required. Hence this paper proposes a methodology that comprises two main methods: (1) preliminary study which includes two quantitative questionnaires, current status questionnaire and readiness assessment questionnaire; and (2) system development method which includes four phases that make up the ERP system development method are: analysis and definition, design, construction, and evaluation stages
Keywords:	ERP System Development Methodology
Source:	Journal of Theoretical and Applied Information Technology pp 504 - 513 Vol. 47. No. 2 -- 2013
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Title:	A NOVEL APPROACH FOR DETECTING SMART CAMOUFLAGING WORM
Author:	JEEVAAKATIRAVAN, D.HEMAPRIYADHARSHINI, C.CHELLAPAN R. DHANALAKSHMI
Abstract:	Active Worms wreak havoc by exploiting security loopholes and flaws in software design to propagate from one machine to another. Active Worms are different than a traditional virus in that they don’t spread by modifying programs on a single system, but rather by searching for and implanting destructive code onto other systems automatically. In this paper, we propose a novel approach for detecting an intricate type of smart worms called C-Worms. Camouflaging worms (C-Worms) falls under the new category of active worms which conceals its presence by blending with the environment in such a way that it looks analogous to the normal data packet of the network. Thus the propagation of C-Worms and its traffic pattern cannot be determined by the existing worm detection schemes. To countermeasure the C- Worm, we design a new worm detection scheme called Controlled Packet Transmission (CPT) technique where the background traffic is monitored as a function of time. Furthermore, we employ Centralized Worm Detector (CWD) algorithm based on digital signature technique to authenticate each node and monitor the network. Using the CWD algorithm, malicious C-Worm nodes are discarded and the recovered network is monitored. The performance graph obtained experimentally clearly proves that our detection scheme can effectively detect the C-Worm propagation.
Keywords:	Active worm, Camouflaging worm, Controlled Packet Transmission, Centralized Worm Detector
Source:	Journal of Theoretical and Applied Information Technology pp 514 - 520 Vol. 47. No. 2 -- 2013
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Title:	A COMPREHENSIVE STUDY OF ROUTING PROTOCOLS FOR COGNITIVE RADIO NETWORKS
Author:	ZAMREE CHE-ARON, AISHA HASSAN ABDALLA, KHAIZURAN ABDULLAH, OMER MAHMOUD
Abstract:	The rapid development of wireless communication technologies results in the problem of radio spectrum shortage. Additionally, the traditional fixed spectrum allocation scheme can lead to the significant spectrum underutilization. Cognitive radio (CR) is an emerging technology to solve those problems by enabling unlicensed users to opportunistically access the available licensed bands in an intelligent and cautious manner. In cognitive radio networks (CRNs), the data routing is one of the most important issues to be taken into account and requires more study. This paper surveys recent routing protocols for CRNs and introduces the classification of routing techniques as well as presenting significant challenges which need to be considered for routing design. The main purpose of this survey is to provide a comprehensive and critical study on the current routing schemes in order to expose new open issues as well as being utilized to either improve the existing routing techniques or to develop new routing solutions. The possible future research in routing for CRNs is also given.
Keywords:	Routing Protocols, Cognitive Radio Networks, Routing Challenges, Routing Categories
Source:	Journal of Theoretical and Applied Information Technology pp 521 - 536 Vol. 47. No. 2 -- 2013
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Title:	HYBRID BIG BANG–BIG CRUNCH OPTIMIZATION BASED OPTIMAL REACTIVE POWER DISPATCH FOR VOLTAGE STABILITY ENHANCEMENT
Author:	Z. ZANDI, E. AFJEI, AND M.SEDIGHIZADEH
Abstract:	One of the most crucial functions in the operation and control of power system is reactive power dispatch (RPD).A hybrid Big Bang–Big Crunch (HBB–BC) optimization algorithm which consists of A Big Bang–Big Crunch algorithm combined with particle swarm optimization (PSO) is proposed in this paper in order to solve optimal reactive power dispatch (ORPD) problem. The L-index of load buses is base for the monitoring methodology for voltage stability. Minimizing the real power loss is the objective. This algorithm is used to find the settings of control variables such as generator voltages, tap positions of tap changing transformers and switchable VAR sources. Furthermore, the optimization models are implemented and solved using the GAMS programming language .The proposed method has been carried out on IEEE 30 -bus test system. For comparative study the results obtained by the proposed algorithm are compared with those obtained by modeling the optimization problem in the GAMS environment. The outcomes indicate that the real power loss is decreased with voltage stability margins increased simultaneously.
Keywords:	Particle Swarm Optimization, Reactive Power Dispatch, Voltage Stability ,Big Bang–Big Crunch Algorithm, L-Index
Source:	Journal of Theoretical and Applied Information Technology pp 537 - 546 Vol. 47. No. 2 -- 2013
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Title:	SOME NOVEL MEASUREMENT ON EXPLORING LARGE DATA SETS BASED ON MULTI-VARIABLES MUTUAL INFORMATION THEORY
Author:	YU-SHAN JIANG, QING-LING ZHANG, CHAO LIU
Abstract:	Applying for information theory, we present a measure of dependence for three-variable relationships: the three variables maximal information coefficient (3D-MIC). It is a kind of maximal information-based nonparametric exploration (MINE) statistics for identifying and classifying relationships in large data sets. 3D-MIC generalized the MIC measurement. At the same time some optimal single axis partition algorithm (OSPA) is built to ensure the feasibility of the MIC measurement.
Keywords:	Mutual Information, Maximal Information-Based Nonparametric Exploration (NE), Dynamic Programming, Maximum Information Coefficient (MIC), Optimal Single Axis Partition Algorithm (OSPA)
Source:	Journal of Theoretical and Applied Information Technology pp 547 - 550 Vol. 47. No. 2 -- 2013
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Title:	RESEARCH ON JOB-SHOP SCHEDULING PROBLEM BASED ON IMPROVED PARTICLE SWARM OPTIMIZATION
Author:	ZUFENG ZHONG
Abstract:	Considering the standard particle swarm optimization (PSO) has the shortcomings of low convergence precision in job shop scheduling problems, the job shop scheduling solution is presented based on improved particle swarm optimization (A-PSO). In this paper, the basic theory of A-PSO is described. Also, the coding and the selection of parameters as well as the decoding of A-PSO are studied. It uses the maximum flow time which is minimized to evaluate the performance of the algorithm, and applies it to solve a typical scheduling problem. A large number of simulation results show that this algorithm has good feasibility and effectiveness in job-shop scheduling problem.
Keywords:	Particle Swarm Optimization; Coding; Job-Shop Scheduling Problem; Intelligence Optimization Algorithms
Source:	Journal of Theoretical and Applied Information Technology pp 551 - 555 Vol. 47. No. 2 -- 2013
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Title:	RESEARCH ON SPATIAL INDEX OF ELECTRIC GIS
Author:	WANG XIAOHUI, WU KEHE, CHEN FEI
Abstract:	In the electric GIS, facilities in different voltage levels show a different proportion, and topological relations exist in line and point. According to the limitations in multi-scale representation and topological connection of traditional spatial index, an extended R-Tree model based on multi-scale clustering (MCER Tree) is proposed, which removed the restrictions of the same height of all leaf nodes, but increased pointer to line list of spatial object. This paper focused on the structure, generation algorithms and insertion algorithms of MCER Tree, and finally proposed the future research.
Keywords:	Electric GIS, Spatial Index, MCER Tree, Cluster Analysis
Source:	Journal of Theoretical and Applied Information Technology pp 556 - 561 Vol. 47. No. 2 -- 2013
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Title:	OBJECTIVE EVALUATION SYSTEM OF ENGLISH PHONEMES
Author:	JING ZHANG, SIMIN YU
Abstract:	Nowadays it is quite difficult for the traditional teaching methods and resources to meet the widespread and urgent needs of spoken English learning. Computer-assisted Language Learning (CALL) technology can greatly improve the efficiency of language self-learning, providing timely, accurate and objective assessment and feedback which can help learners to find the difference between their own pronunciations and the standard pronunciations, and then correct their own pronunciations. This paper presents an objective evaluation system about English phoneme pronunciation. This system can give an objective evaluation and feedback about student's pronunciation by analyzing the waveform and calculating the Mel Mel-Frequency Cepstrum Coefficients (MFCC) Euclidean distance between student's pronunciation and standard pronunciation using the Dynamic Time Warping (DTW) algorithm, to help students learn English phonemes with no teacher involved.
Keywords:	Computer-assisted Language Learning (CALL), Pronunciation Evaluation, MFCC, DTW
Source:	Journal of Theoretical and Applied Information Technology pp 562 - 568 Vol. 47. No. 2 -- 2013
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Title:	EXPONENTIAL STABILITY OF STRONG SOLUTION FOR A STOCHASTIC DISTURBANCE PREDATOR-PREY SYSTEM OF THREE SPECIES WITH AGE-STRUCTURE
Author:	CHENLIYU, LIUSI
Abstract:	This thesis first introduces stochastic disturbance factor into a model and has a discussion of it on the basis of a predator-prey system of three species with age-structure proposed by Zhixue Luo. Sufficient conditions of a stochastic disturbance predator-prey system of three species with age-structure have been given and exponential stability of strong solution has been proved according to Gronwall’s lemma and formula. The conclusion is a further development of pertinent literature.
Keywords:	Exponential Stability, Stochastic Disturbance, Formula, Gronwall’s Lemma, Three Species Subject Classification :(AMS) 35B10, 45D05, 60H15, 34K40
Source:	Journal of Theoretical and Applied Information Technology pp 569 - 574 Vol. 47. No. 2 -- 2013
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Title:	CRANK ROUND SLIDER ENGINE MULTI-FLEXIBLE-BODY DYNAMICS SIMULATION
Author:	HONG-YUAN ZHANG, XING-GUO MA
Abstract:	Based on multi-flexible-body dynamics theory, through the combination of finite element method software and multi-body system dynamics software, a multi-body system dynamics model of a crank round slider engine is established. In consideration of the influence of rigid-flexible coupling on the system, a dynamics analysis on a piston is performed to obtain displacement, velocity and accelerating curve of the piston as well as dynamic response in a period. The combination of a rigid body and a flexible body can achieve more intuitive and correct simulation of the actual working conditions of the engine, which provides an important evidence for the design and improvement of the engine
Keywords:	Multi-Flexible-Body Dynamics, Rigid-Flexible Coupling, Finite Element Method, Engine
Source:	Journal of Theoretical and Applied Information Technology pp 575 - 579 Vol. 47. No. 2 -- 2013
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Title:	THE SITE SELECTION AND OPTIMIZATION OF TANGSHAN PASSENGER WEST STATION
Author:	MI XUE YUE, JIANG JUN NA
Abstract:	In recent years, the proportion of Tangshan high-speed direct passenger in passenger transport is increasing. The existing bus terminal is still mainly dominated by ordinary road passenger. Bus terminal bit unreasonable station level is low, can not meet the requirements of the development of future high-speed passenger. The papers using principal component analysis to analyze the factors that affect passenger traffic, to determine the district's high-speed passenger traffic. Quantitative calculation and qualitative analysis method can produce a number of alternative sites. Finally, the establishment of maximum economic efficiency model, Compare the combined costs of various options, select the minimum cost solutions as the optimal site.
Keywords:	Express Bus Terminal, Site, Passenger Traffic, Optimization Model
Source:	Journal of Theoretical and Applied Information Technology pp 580 - 585 Vol. 47. No. 2 -- 2013
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Title:	CAR B-PILLAR SKID PLATE MOLDING PARAMETER OPTIMIZATION
Author:	WANG YOUMIN, YU CHUN, 3CHEN MINGXIN, ZHOU GE，DOU ZONGYING, YANG XAOLI, DU XIAOYANG
Abstract:	To obtain the best injection molding process parameters and mold design for the car B-pillar skid plate， the process parameters of injection molding CAE needs to be optimized. After determining the parts quality standards, we complete the range and analyze the results. But this method can only identify the influence trend of parameters on the test results; it can’t get the best process parameters. This paper uses the modified simplex method as optimization method. We transform the function optimization into the injection molding CAE process optimization. The injection molding process parameters are optimized. We get the best parts injection molding process parameters: the Mold temperature is 33.24, the melt temperature is 213.98℃, injection pressure is 80.12MPa, parts of the program sink mark index is 0.5221%, volume shrinkage is 1.0143% , maximum warping deformation is 1.426mm, the cavity residual stress is 4.8333MPa. Car B-pillar skid plate is injected according to the best process parameters, the obtained parts have met our quality requirements.
Keywords:	Injection Molding(IM), Process Parameters(PP), Optimization(O)
Source:	Journal of Theoretical and Applied Information Technology pp 586 - 589 Vol. 47. No. 2 -- 2013
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Title:	A METHOD FOR INTUITIONISTIC FUZZY MULTI-ATTRIBUTE DECISION MAKING WITH INCOMPLETE ATTRIBUTE WEIGHT INFORMATION
Author:	YUANYUAN HE, ZAIWU GONG
Abstract:	A new method for solving intuitionistic fuzzy multi-attribute decision making problem is proposed, in which the information of attribute weights is incompletely known. Considering much information about hesitancy and vagueness inherited to intuitionistic fuzzy sets, a new class of distance for describing the deviation degrees between intuitionistic fuzzy sets is introduced. Furthermore, the measure of similarity degree for each alternative to ideal point is calculated by using the new proposed fuzzy distance. A model of TOPSIS is designed with the introduction of the particular closeness coefficient composed of similarity degrees for alternative ranking. Finally, a numerical example is given to show feasibility and effectiveness of the developed method.
Keywords:	Intuitionistic Fuzzy Set(IFS), Similarity Degree(SD), Closeness Coefficient(CC)
Source:	Journal of Theoretical and Applied Information Technology pp 590 - 593 Vol. 47. No. 2 -- 2013
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Title:	REMOTE MONITORING AND INTELLIGENT ANALYSIS PLATFORM FOR WATER QUALITY IN LAKE RESERVOIR
Author:	LIN LI, ZAI-WEN LIU, XIAO-YI WANG, JI-PING XU
Abstract:	As for a relatively backward situation in monitoring of water quality and prediction and early-warning of algal bloom in lake reservoir, an intelligent information platform integrating monitoring and analysis of water quality, and prediction and early-warning of algal bloom is developed. Lower data acquisition instrument is based on main ARM controller, adopting WinCE OS, and integrates serial-port communication technology, GPS technology and GPRS remote data communication technology, so as to collect and transmit information on water quality; upper analytical system is established using C++, and combines key technologies like network communication, geographic information system and SQL2005 database, so as to analyze data on water quality collected by instrument and realize functions like real-time monitoring and history inquiry of information on water quality. In addition, high-precision prediction and early-warning to algal bloom in lake reservoir are realized through grey-BP neural network model, providing an effective information decision-making platform for environment protection bureau to prevent and treat algal bloom in lake reservoir.
Keywords:	Remote Monitoring Of Water Quality; Intelligent Analytical Platform; Neural Network; Prediction And Early-Warning
Source:	Journal of Theoretical and Applied Information Technology pp 594 - 597 Vol. 47. No. 2 -- 2013
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Title:	DATA ACQUISITION SYSTEM OF A SELF-BALANCING ROBOT BASED ON FPGA
Author:	DAODE ZHANG, QIANG WANG, CHENG XU
Abstract:	For inverted pendulum principle of two-wheeled self-balancing robot, this paper describes the use of FPGA controller for attitude sensor data acquisition system design. Using Verilog HDL hardware description language data acquisition module and A / D converter module, it can have the attitude sensor data of the FPGA control system collected early and accurately , and the way is given to solve the multi-sensor data collection, using the area reuse and reconfiguring idea of FPGA .The results show that the system is stable, reliable, accurate data collection.
Keywords:	Self-Balance Robot ；FPGA ； Data Acquisition ；Verilog HDL
Source:	Journal of Theoretical and Applied Information Technology pp 598 - 610 Vol. 47. No. 2 -- 2013
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Title:	ANT-COLONY-ALGORITHM-SIMULATED-ANNEALING-ALGORITHM-BASED OPTIMIZATION APPROACH FOR MCM INTERCONNECT TEST
Author:	CHEN LEI
Abstract:	In this paper, a novel optimization approach based on ant colony algorithm (ACA) and simulated annealing algorithm (SA) is presented for the Multi-chip Module (MCM) interconnect test generation problem. In order to apply ACA into the interconnect test, the pheromone updating rule and state transition rule is designed by combing the characteristics of MCM interconnect test generation. By using the method, the ideal searching direction of global optimal solution could be found as soon as possible, while the shortcomings of high initial temperature required and slow convergence speed of SA were also overcame. ACA generates the initial candidate test vectors in this approach. In order to get the best test vector with the high fault coverage, SA is employed to evolve the candidates generated by ACA. The international standard MCM benchmark circuit was used to verify the approach. After comparing with not only the evolutionary algorithms, but also the deterministic algorithms, the simulation results indicate that this optimization approach can achieve high fault coverage, compact test set and short execution time.
Keywords:	Ant Colony Algorithm (ACA), Simulated Annealing Algorithm (SA), Multi-chip Module (MCM)
Source:	Journal of Theoretical and Applied Information Technology pp 611 - 615 Vol. 47. No. 2 -- 2013
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Title:	RESEARCH ON THE INVERSE KINEMATICS FOR 5R MANIPULATOR AND ITS IMPLEMENTATION BASED ON FPGA
Author:	HU XINYU, ZHANG DAODE, YANG GUANGYOU, WANG QIANG
Abstract:	Analyzing the inverse kinematics theory and its solution method for 5R series manipulator, introducing the establishment of link coordinate system and D_H parameters for 5R series manipulator, studying the algorithm of inverse kinematics solutions based on FPGA controller for 5R manipulator, the system constructs the SOPC system architecture that is based on the Nios II CPU, uses the C program to compile the inverse kinematics solving module and adopts the Robotics Toolbox to simulate the inverse kinematics theory. The results show that the algorithm is effective to realize the inverse solutions of kinematics for 5R serial manipulator with FPGA
Keywords:	Series Manipulator; FPGA; Inverse Kinematics; Link Coordinate System
Source:	Journal of Theoretical and Applied Information Technology pp 616 - 621 Vol. 47. No. 2 -- 2013
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Title:	EXPRESS AVIATION NETWORK CONSTRUCTION BASED ON HUB-SPOKE THEORY
Author:	MINGKE HE, HONGJING CHENG, HAOXIONG YANG
Abstract:	Air freight network is one of the important means to improve the competitiveness of express enterprises. This paper establishes the model from two aspects, hub location decisions and hub number decisions, with the goal to achieve the lowest air freight network cost, based on the “hub-spoke” theory. Then, computes the cost of different number of hubs, and uses super-efficiency DEA model to decide the number of hubs. Finally, an example is illustrated and the results show that the model is reasonable and feasible. The “hub-spoke” network can help to improve efficiency of resource utilization and competitiveness of express enterprises.
Keywords:	Express Company, Hub-Spoke Network, Genetic Algorithm, Super-efficiency DEA Model
Source:	Journal of Theoretical and Applied Information Technology pp 622 - 627 Vol. 47. No. 2 -- 2013
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Title:	FEATURE ANALYSIS ON QUEUE LENGTH OF ASYMMETRIC TWO-QUEUE POLLING SYSTEM WITH GATED SERVICES*
Author:	WANG XINCHUN, LIU YUMING, CHENG MAN , YE QING
Abstract:	On the basis of establishing mathematical model and defining the parameters and treating embedded Markov chains and probability generating function as math tools, the paper analyzed discrete-time, non-symmetric dual-threshold service queue system precisely, and it derived first order and second order characteristics of the system. The paper calculates the average queue length and average waiting delay of information group. Simulation experiment based on system running mechanism and theoretical calculations have good consistency. The analysis laid the solid foundation for research of gated polling system based on asymmetric multi queue; it further deepens the perception of asymmetric gated polling system; it is meaningful to dominate polling system flexibly.
Keywords:	Asymmetric; Two-Queue; Gated Polling System; Feature Of Average Queue Length; Simulation And Theoretical Calculation
Source:	Journal of Theoretical and Applied Information Technology pp 628 - 632 Vol. 47. No. 2 -- 2013
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Title:	SYSTEM OF PREVIEW AND DETECTION BASED ON NETWORK VIRTUAL EXPERIMENT
Author:	BANGLI SHI, YI YANG, PENG XU
Abstract:	As an important supporting means for teaching in university, virtual experiment makes up the lack of resources in experiment teaching. Network virtual experiment is a new development direction following the virtual experiment, it has inherited and carried forward the concept of virtual experiments, extending and expanding the resources of virtual experiments. It realizes the preview and detection of experiment by the networked virtual experiment, which ensures the reality of experiment process and data, and reduces teacher's workload, so that it provides a firm base for automated management of experiment teaching.
Keywords:	Virtual Experiment (VIREXP), Internet Technique, System of Experiment Preview, Network
Source:	Journal of Theoretical and Applied Information Technology pp 633 - 637 Vol. 47. No. 2 -- 2013
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Title:	A NEW SELECTION ALGORITHM BASED ON REPUTATION AND CONTRACT-MANAGEMENT
Author:	LINGYU XU, YINGHUA SUN
Abstract:	In Grid, the reputation of users is the important indicator for service selection, particularly in the situation with the combination of Grid technologies and economic models. A contract-management model based on reputation evaluation and a service selection algorithm are proposed in this paper. The applied strategy facilitates the users of similar reputation to carry out transactions. The experimental results illustrate that the model is effective. It not only can improve the success rate of the users with good reputation, but also can speed up the elimination of the users with poor reputation.
Keywords:	Grid Market, Grid Architecture for Computational Economy, Reputation value, Contract-Management，Structure of GMACT
Source:	Journal of Theoretical and Applied Information Technology pp 638 - 643 Vol. 47. No. 2 -- 2013
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Title:	THE RESEARCH ON NONLINEAR CHARACTERISTIC OF FIXED DISPLACEMENT PUMP–VARIABLE MOTOR SYSTEM
Author:	AI CHAO, KONG XIANGDONG, WANG JING
Abstract:	In different system working points, response characteristics of the fixed displacement pump – variable motor volume speed control system are different. For example, after the input speed of the fixed displacement pump and the pivot angle of the variable motor are changed, the same variation in pivot angle of the motor causes different variation in speed of the motor. Therefore, multiplication nonlinear law works here. As for this problem, small signal linearization method is adopted to analyze a fixed displacement-variable motor system transfer function and obtain the relationship among natural frequency, damping ratio and the pivot angle of the motor. Further identify the experimental data, experimental value for natural frequency and damping ratio of the system is obtained. Also, fitting method is adopted to obtain the relationship among natural frequency, damping ratio and pivot angle of the motor, which lays the foundation for the application of fixed displacement pump-variable motor speed control system.
Keywords:	Fixed Displacement Pump – Variable Motor Volume Speed Control System, Multiplication Nonlinear Law, Small Signal Linearization Method, System Identification
Source:	Journal of Theoretical and Applied Information Technology pp 644 - 648 Vol. 47. No. 2 -- 2013
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Title:	REAL-TIME MEDICAL MONITORING SYSTEM DESIGN BASED ON INTRA-BODY COMMUNICATION
Author:	SHUANG ZHANG, YU PING QIN, PENG UN MAK , SIO HANG PUN, MANG I VAI
Abstract:	With soaring of the sub-health population around the world, the traditional medical treatment has not met the increasing demand; it is urgent to create a modern nursing technology to provide service for human being. With development of the sensor technology and continuous improvement of the wireless communication technology, the new medical monitoring system has been gradually released from the traditional human-labor nursing. On the basis of development of the intra-body communication technology, a wireless, wound-free, portable medical system with real-time monitoring is proposed in this paper. In combination with the remote diagnosis system in the modern medical treatment, the sensor technology and the intra-body communication technology can be utilized to provide all-sided and real-time monitoring for individuals. Because data fusion can be effectively implemented between the systems and WAN & LAN, the model of the medical monitoring system for families is also presented in this paper, which offers guidance for further promotion of real-time medical monitoring.
Keywords:	Intra-Body Communication, Portable, Wearable Equipment, Medical Monitoring System
Source:	Journal of Theoretical and Applied Information Technology pp 649 - 652 Vol. 47. No. 2 -- 2013
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Title:	3-D SPACE FLIGHT FORMATION CONTROL FOR UAVS BASED ON MAS
Author:	YANSONG DENG, KAIYU QIN, GUANGMING XIE
Abstract:	A Multi-Agent System(MAS) consensus based algorithm is proposed for Multi-UAVs to maintain a specified time-varying geometric configuration for formation flight in 3-D space. Use decoupling characteristics in altitude control of Multi-UAVs, formation problem in 3-D space, was decomposed altitude control and plane control. In this approach, the proposed control strategy requires only the local neighbor-to-neighbor information between vehicles. Speed, heading angle. Then height synchronization is realized and the 3-D space formation flight can be achieved, and formation transform was investigated. The simulation results show that, this method has good robustness and scalability, simple calculation and a small amount of communication, and make the formation in 3-D space become easy to implement.
Keywords:	MAS, UAV, Consensus, Formation Flight, 3-D Space
Source:	Journal of Theoretical and Applied Information Technology pp 653 - 659 Vol. 47. No. 2 -- 2013
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Title:	FREE VIBRATION CHARACTERISTICS ON A SPLIT TORQUE TRANSMISSION
Author:	ZHAOXIA HE, LEHAO CHANG, LAN LIU
Abstract:	The free vibration characteristics of a dual split torque transmission are studied in this work. A transverse-torsional coupling dynamic model is developed using lumped parameter method. The natural frequencies and mode shapes are calculated by solving the eigenvalue problem of the differential equations of motion. The vibration modes of the system are classified into translational mode and rotational mode, and the characteristics of the two modes are described in details. The modal strain energy and kinetic energy are introduced to study the impact of mesh stiffness, component masses and moments of inertia. The influence of the concerned parameter on a certain mode can be effectively determined by inspection of the modal energy distribution. The effect of the torsional stiffness of the shaft connecting two stages is also studied. The results presented in this work can provide references for the design of dynamic performance of the split torque transmission.
Keywords:	Split Torque Transmission, Modal Analysis, Mesh Stiffness, Modal Strain Energy, Kinetic Energy
Source:	Journal of Theoretical and Applied Information Technology pp 660 - 665 Vol. 47. No. 2 -- 2013
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Title:	AN IMPROVED CDAR ALGORITHM BASED ON REDUCING THE SCANNING TRANSACTION DATA
Author:	LI-FENG WU, JIAN XIAO
Abstract:	The research modifies the CDAR algorithm to the itemsets scanning transaction data method, and joins in the concept of deleting the non-frequent itemsets in the transaction data. It judges whether the itemsets can satisfy the minimum support degree. In order to mine the association rules, the paper puts forward an effective algorithm, that is, improved CDAR algorithm. From the experimental estimation, it shows that the improve_CDAR algorithm can effectively improve the execute performance.
Keywords:	Data Mining, Association Rule, Improved CDAR
Source:	Journal of Theoretical and Applied Information Technology pp 666 - 670 Vol. 47. No. 2 -- 2013
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Title:	A PRIVACY PRESERVING DATA MINING SCHEME BASED ON NETWORK USER’S BEHAVIOR
Author:	LI-FENG WU, JIAN XIAO
Abstract:	The privacy preserving data mining has become a research hot issue in the data mining field. The server log of the Web site has preserved the page information visited by users. If the page information is not protected, the user’s privacy data would be leaked. Aiming at the problem, it discusses the privacy preserving problem based on the user’s behavior in the Web data mining, and then introduces a method which converts the Web server log information into the relational data table, produces the information which disturbs the data sheets with a randomized responding method. It offers the data users a discovery algorithm of the frequent itemsets and the strong association rules, then it receives the real private association rule among the online shopping basket goods. The experiments prove that the introduced privacy of the privacy preserving association rule mining algorithm in the Web data mining is good, and it has definite applicability.
Keywords:	Data Mining, Conversation Identification, Privacy Preserving; Association Rule, Web Log
Source:	Journal of Theoretical and Applied Information Technology pp 671 - 678 Vol. 47. No. 2 -- 2013
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Title:	CONSTRUCTION OF MULTI-LEVEL ELECTRICAL AND ELECTRONIC PRACTICE SYSTEM
Author:	SHOUCHENG DING
Abstract:	The science multi-level practice teaching system not only can improve the students’ basic practical skills, but also improve students' practical ability and ability to operate, and can identify problems through practice, analyze problems, to solve the problem. Also it can promote the students integrated use of the theory knowledge, and further propose new ideas, new theories, and then design a new practice, explore new ideas, acquire new knowledge, stimulate innovative thinking. The article studied the experimental system based on LAN and virtual experimental simulation system. After years of reform and teaching practice, this paper explores a set of electrical and electronic course practice teaching system; the teaching effect is very significant, and it is a popular promotional value.
Keywords:	Multi-level Practice Teaching, Capacity, Quality, Innovative Thinking
Source:	Journal of Theoretical and Applied Information Technology pp 679 - 686 Vol. 47. No. 2 -- 2013
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Title:	ANALYSIS ON THE DIFFERENT PLASTIC REGION BETWEEN 2D AND 3D MODEL IN UNDERGROUND CAVERNS EXCAVATION
Author:	CHUNHUA YOU, FANG HAN
Abstract:	Analysis and calculation in underground caverns excavation is absolutely a complex three-dimensional (3D) problem, but a two-dimensional (2D) model is usually applied to substitute for the 3D model because of the limit of computer speed and the complexity of the FEM 3D grids. This paper discusses the difference of this two models on the basis of Drucker-Prager yield criteria and the reason why the plastic region from 3D finite element model is smaller than that from 2D model is analyzed in theory. At last, comparative analysis based on the classical FEM software ABAQUS is constructed. The conclusion intuitively shows that the plastic region of 2D model is bigger than that of 3D model, so it is suggested that the 3D finite element model should be built as far as possible in order to describe the plastic region accurately.
Keywords:	Underground Caverns, Plane Strain, Three-dimensional Model, Plastic Region, Model Updating
Source:	Journal of Theoretical and Applied Information Technology pp 687 - 691 Vol. 47. No. 2 -- 2013
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Title:	BLADE LOAD CONTROL OF WIND TURBINE BASED ON VARIABLE-PITCH CONTROL STRATEGIES
Author:	HAIJUN REN
Abstract:	The control strategies of blade loads are proposed for the characteristics of blade stresses of variable-speed variable- pitch wind turbine. Blade loads are divided into two static and dynamic components. The pitch angle and generator torque are controlled by Single neuron PID controller in the static part. Variables are converted from rotational coordinate to fixed coordinate through multi-blade coordinate transformation theory. Then, the control parameters obtained are converted to the one in rotational coordinate frame via multi-blade inverse transformation in the dynamic part. The parameters of static part are added to the parameters of dynamic part, yielding control value for wind turbine pitch control. The external controller of Bladed is designed and the control strategies are simulated by the professional design software Bladed for wind turbines. The control performance of external controller is compared with and that of internal controller. Simulation results show that external controller can reduce the tilt torque of blade root and blade flapwise torque. Thus the proposed external controller possesses a better performance, the correctness of the proposed blade load control strategies is verified.
Keywords:	Wind Turbine, Variable-pitch System, Coordinate Conversion, Load Control
Source:	Journal of Theoretical and Applied Information Technology pp 692 - 696 Vol. 47. No. 2 -- 2013
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Title:	DAMAGE FOLDING MUTATION MODEL OF FRACTURING ROCK MASS ON THE OIL-GAS RESERVOIR
Author:	WANCHUN ZHAO, TINGTING WANG, WEIWEI YUAN, BING GUAN
Abstract:	According to the core problem of the oil-gas reservoir fracturing crack formation, this paper proposes that the essence of the oil-gas reservoir fracturing crack formation is the deformation energy accumulation increase and suddenly release of the rock mass which is resulted by fracturing pump work. Based on the principle of conservation of energy, the reservoir fracturing rock mass damage folding mutation model is established. The standard form of balance equation and energy release about the reservoir fracturing rock mass mutating is given. Combined with the actual fracturing of a block of Daqing Oilfield, the energy release quantity is calculated and the calculated result is reasonable which provides a new method for the study of the hydraulic fracturing crack parameters.
Keywords:	Hydraulic Fracturing, Folding Mutation, Damage Theory
Source:	Journal of Theoretical and Applied Information Technology pp 697 - 701 Vol. 47. No. 2 -- 2013
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Title:	A FLEXIBLE VITERBI DECODER FOR SOFTWARE DEFINED RADIO
Author:	LI ZHOU, MIN TANG, DONGPEI LIU, HENGZHU LIU
Abstract:	Modern wireless communication standard varies a lot from each other and is evolving rapidly. Flexibility becomes the dominate consideration of software defined radio (SDR) system design. Reconfigurable platform is preferred in the SDR due to the reuse of hardware. Convolutional code is widely adopted in many wireless protocols but the code parameter differs. In order to support multi-standard service, a decoder compatible for different protocols is needed. In this paper, we designed a flexible Viterbi decoder which is compatible with WiMAX, UMB and LTE’s channel coding scheme. High efficient cascaded Add-compare-select unit architecture and sliding window method for trace back are presented. Meanwhile, conflict free memory access model is also given. FPGA prototype shows our design is highly flexible while maintaining a high throughput with low area cost compared to others.
Keywords:	Viterbi Decoder, Flexible Architecture, Software Defined Radio
Source:	Journal of Theoretical and Applied Information Technology pp 702 - 706 Vol. 47. No. 2 -- 2013
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Title:	COUPLING EFFECT OF UWB-EMP ON IRREGULAR CAVITY
Author:	QIAN YANG, XIAOPENG YAN, YONGLIANG LI, JIANTAO WANG, JING HAN
Abstract:	The electromagnetic coupling effect on the irregular cavity which is acted by ultra wide band electromagnetic pulse (UWB-EMP) is studied. First, an irregular cavity structure model is established by using electromagnetic numerical calculation software (CST). Second, based on the model, the influences of UWB-EMP on the irregular cavity coupling efficiency are analyzed, when its rise time and pulse width change. Simulation show that: the shorter the rise time is, the better the coupling efficiency is gotten; pulse width almost has no influence on coupling efficiency. Furthermore, the signal frequency distribution of the typical positions in the cavity model are analyzed, which helps to improve the electronic equipment anti intense electromagnetic pulse interference abilities. The research results have an important guiding significance to improve the protection ability of the typical electronic equipment to UWB-EMP in practice.
Keywords:	UWB-EMP, Coupling Effect, Irregular Cavity, Rise Time, Pulse Width
Source:	Journal of Theoretical and Applied Information Technology pp 707 - 711 Vol. 47. No. 2 -- 2013
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Title:	ANALYSIS OF THE TEMPERATURE INFLUENCE ON GALVANIC CORROSION AND MATHEMATICAL MODEL
Author:	CHUNLI WANG, JIANHUA WU, QINGFEN LI
Abstract:	The general and galvanic corrosion of high strength steel (980), high strength steel (907) and high strength steel (921A) in seawater at elevated temperatures has been analyzed using electrochemical measurements and a zero-resistance ammeter (ZRA). After the tests, the surface morphologies of the samples have been detected by SEM. Results show galvanic corrosion behavior of 980/907/921A fulfill the mixed potential theory, 921A acts as the anode and both 980 and 907 act as the cathodes. These results using ZRA have been compared with results estimated from the polarization curves according to the mixed potential theory (imposed potential measurements). The effect of temperature on the galvanic corrosion estimated using both types of measurements are basically in agreement, since temperature increases the galvanic current density of the pair in both cases. The galvanic current density with increasing temperature is estimated by the exponential function.
Keywords:	Galvanic Corrosion, Temperature, Seawater, High Strength Steel
Source:	Journal of Theoretical and Applied Information Technology pp 712 - 717 Vol. 47. No. 2 -- 2013
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Title:	GLOBAL PATH PLANNING BASED ON SKELETON EXTRACTION ALGORITHM
Author:	JUN WANG, MING LI, DONG LI
Abstract:	Skeleton extraction algorithm can transform two-dimensional map into a skeleton diagram, which provide more convenience to global path planning of the complex map. This article first extracts skeleton extraction of the global map using the skeleton extraction algorithm and finds all paths of flat map. Based on this we can use search algorithms to search, and find a feasible path connecting starting point and target point. At last we use the optimized algorithm to find optimize the path to achieve the global path planning and optimization in the map. In the simulation, we use the complex maze of the map to validate the algorithm and the effect of it in simulation condition show the effectiveness of the algorithm.
Keywords:	Skeleton Extraction, Global Path Planning, A* Algorithm, PSO, Particle Filter, Map Creating
Source:	Journal of Theoretical and Applied Information Technology pp 718 - 726 Vol. 47. No. 2 -- 2013
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Title:	CREDIT INFORMATION SHARING AND FINANCIAL DEVELOPMENT BASED ON THE RESEARCH OF INFORMATION CHOICE MODEL
Author:	YUNHONG CHAI, YONGNING WANG
Abstract:	By examining the existing credit management system and financial institutions credit behavior, using "Information choice " model to analyze the bank's credit information collection and sharing of logic reveals the inter-bank credit information sharing barriers, sharing the effect it brings, produce inter-bank credit information sharing model which constrained the full effect of incentive.
Keywords:	Credit, Sharing of Information, Finance
Source:	Journal of Theoretical and Applied Information Technology pp 727 - 732 Vol. 47. No. 2 -- 2013
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Title:	FINGERPRINTING ALGORITHM BASED ON THE FIGURE’S COLLUSION DATA BASE
Author:	HUIFEN HUANG, DEFA HU
Abstract:	Under the application occasion of using data base as the soft products publication, there should be corresponding safety system, which could abstain the privacy actions from the betray users. A privacy tracing and solution resolution is raised in this thesis based on the digital fingerprinting relationship data base. Data fingerprinting database, which combined by patent watermarking and user’s fingerprint in chaotic binary sequence, is imbedded into the data base under the control of encryption key. Based on the chaotic binary sequence’s randomness, to abstract the fingerprinting and trace the betrayer. The plan has strong conclusion safety, at the same time lower the fingerprinting inspection and betray tracing algorithm complexity. The thesis describes the data base fingerprinting encode, embedment, fingerprinting inspection and abstraction algorithm, analyzes the algorithm’s robustness and betray tracing ability, and has experiment testimony.
Keywords:	Relationship Data Base, Digital Fingerprinting, Collusion Safety, Betray Tracing
Source:	Journal of Theoretical and Applied Information Technology pp 733 - 739 Vol. 47. No. 2 -- 2013
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Title:	ULTRASONIC ARRAY IMAGING METHOD FOR CONCRETE MATERIALS
Author:	QIUFENG LI, XUEJUAN YANG, PAN HUANG, YIN LIAO
Abstract:	Because of the need of rapid detection of internal defects and embedded object in concrete structures, a ultrasonic detecting method with linear array transducers is presented here, which is the high-resolution and efficient imaging technique for concrete materials by combining with synthetic aperture focusing technique (SAFT). At first, simulation data of array detection are processed to be amalgamated B-scan data of concrete materials according to the structural characteristics of linear array transducers. And then the B-scan data collected from numerical simulation are reconstructed in the light of geometrical relation of ultrasonic path and SAFT. And the structural imaging figures are calculated at last. It can be shown from simulation results that the method with array detection is effective, and the embedded object in model can be identified effectively.
Keywords:	Concrete Materials, Ultrasonic Array Transducers, SAFT
Source:	Journal of Theoretical and Applied Information Technology pp 740 - 745 Vol. 47. No. 2 -- 2013
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Title:	A DYNAMIC ON-DEMAND MULTI PATH ROUTING ALGORITHM FOR LOW EARTH ORBIT SATELLITE NETWORKS
Author:	HOUTIAN WANG, QI ZHANG, XIANGJUN XIN, YONGJUN WANG, LIJIA ZHANG
Abstract:	Compared with Geostationary Orbit (GEO) satellite systems and Medium Earth Orbit (MEO) satellite systems, Low Earth Orbit (LEO) satellite systems provide lower propagation delay as well as higher throughput. Because of these reasons, LEO satellite systems can play a pivotal role in providing services to areas where there is no substantial terrestrial infrastructure. In this paper, a novel kind of Dynamic On-demand Multipath Routing algorithm (DOMR) is proposed for LEO satellite networks. The performance of LEO satellite networks based on DOMR algorithm is simulated and analyzed. Moreover, the packet delivery ratio of LEO satellite networks when running DOMR and Dynamic Source Routing Algorithm for LEO Satellite Networks (DSR-LSN) is compared. The packet delivery ratio is about 6.39% higher when running DOMR. Simulation results show that on-demand multipath routing algorithm has a good performance in drop rate and the end-to-end delay of packet delivery.
Keywords:	Low Earth Orbit, Satellite Networks, Dynamic On-demand Multipath Routing, Drop Rate, Packet Delivery Radio
Source:	Journal of Theoretical and Applied Information Technology pp 746 - 754 Vol. 47. No. 2 -- 2013
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Title:	DYNAMIC SIMULATION OF SPIRAL BEVEL GEAR BASED ON SOLID WORKS AND ADAMS
Author:	JIHUI LIANG, LILI XIN
Abstract:	Spiral bevel gears are one of basic mechanical units to transmit motion between concurrent axes. The transmission has quite a few merits, such as the big overlap ratio, the high loading capacity, the high transmitting efficiency, the stability and the small noises, and they are widely used in automotive vehicle, planes, machine tools and all kinds of machines. Mechanical properties of spiral bevel gear have significant influence on the whole mechanical structure and play an important role in the system optimization, strength check, fault diagnosis and fault prediction, and gear tooth meshing dynamic load is an important issue in the gear research field. Three-dimensional models of spiral bevel gears are created by SOLIDWORKS and then converted to ADAMS by means of data exchange interface between SOLIDWORKS and ADAMS. By the contact algorithm theory of multi-body dynamics and ADAMS, the dynamic simulation of the spiral bevel gears mesh is specified. The curves of angular speed, torque and meshing force on the spiral bevel gears are obtained by simulation calculation, which provide references to research on dynamic characteristics of gear driving device.
Keywords:	Spiral Bevel Gear, ADAMS, Gear Meshing, Dynamics Simulation
Source:	Journal of Theoretical and Applied Information Technology pp 755 - 759 Vol. 47. No. 2 -- 2013
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Title:	SECURE MULTI-PARTY COMPUTATION AND ITS APPLICATION STUDY IN THE FIELD OF MECHANICAL ENGINEERING
Author:	JIAN LI
Abstract:	Along with the development and globalization of information technology and manufacturing industry, the transmission and exchange of engineering information more and more depends on the network in the process of the enterprise cooperation and negotiation. It becomes more and more frequent to ensure the security of the information engineering, which will be the reality problems that more and more countries and enterprises pay attention to. The paper first gives an elaborative description of the concept of secure multi-party computation (SMC). Then the paper analyses the typical protocol of secure multi-party computation, further researches on the application in the field of engineering machinery manufacturing, eventually gets the conclusion that the secure multi-party computation has been the both public and confidential information exchange model, which also has brilliant application development prospect and huge potential in other engineering field.
Keywords:	Secure Multi-party Computation, Mechanical Engineering, Information Exchange, Computation Agreement, Correlation Coefficient
Source:	Journal of Theoretical and Applied Information Technology pp 760 - 766 Vol. 47. No. 2 -- 2013
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Title:	STATICS ANALYSIS OF CYLINDRICAL GEAR DRIVE AT ANY MESHING POSITION BASED ON ANSYS
Author:	XUEYI LI, SHOUBO JIANG, CHAOCHAO LI, BINBING HUANG
Abstract:	The transform relation between the meshing position and rotation angle of a cylindrical gear pair is firstly derived according to the theory of gear meshing. Then the technique of building the assembly model of a cylindrical gear pair at specified meshing position in ANSYS is researched. On this basis, a new method to perform static contact analysis of cylindrical gear at any meshing location is proposed. In comparison with the conventional method, the maximum working stress of the gear in a meshing cycle can be accurately calculated by this method. Simulation results show that the proposed method is reasonable, and it provides the foundation for further study of the fatigue life analysis and structural optimization of the cylindrical gear transmission.
Keywords:	Statics Analysis, Finite Element Method, Gear Strength, Meshing Position
Source:	Journal of Theoretical and Applied Information Technology pp 767 - 773 Vol. 47. No. 2 -- 2013
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Title:	EFFECT ANALYSIS OF INFORMATIZATION LEVEL TO GREEN PROCESS INNOVATION IN MANUFACTURING ENTERPRISES
Author:	KEXIN BI, QUANZHEN BAO, DI FENG
Abstract:	The relationship between information technology and innovation has been well studied. Based on extant literature, and the data from 264 manufacturing enterprises in China, we proposed the corresponding hypothesis of informatization level to green process innovation, and tested the hypotheses by Structural Equation Model (SEM) together with software AMOS7.0. The results of the study revealed that: the informatization level had positive correlation with green resource selection process innovation, green machining process innovation, green packaging process innovation, but did not effect the green recycling process innovation. This paper presents theoretical and empirical evidence of the impact of informatization level to green process innovation, and has interesting implications for operation management research and practices. These results may contribute to better decision-making towards the implementing information technology practices.
Keywords:	Manufacturing Enterprises, Informatization Level, Green Process Innovation
Source:	Journal of Theoretical and Applied Information Technology pp 774 - 779 Vol. 47. No. 2 -- 2013
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Title:	ANALYSIS ON THE IMPACT ON LEARNING AND TEACHING MODEL BASED ON MULTIMEDIA NETWORK
Author:	XIUJUN WU, YANSHUANG ZHOU, JING DUAN
Abstract:	With the development of education informationalization, many teaching application based on multimedia and network are gradually penetrated into all kinds of education processes and the teaching activities which formed a huge challenge to traditional education mode . But the immaturity of the multimedia and network teaching which developed in recent decades lead to some practical problems. This article analyzes the teaching model based on the characteristics of multimedia and network teaching. It also analyzes the multimedia and network teaching mode using the regression method. It puts forwards corresponding suggestions for problems ,provides wider ideas for modern education and creates a more scientific and effective learning and teaching mode.
Keywords:	Multimedia Network, Learning Teaching Mode, Education Informationalization, Network Technology
Source:	Journal of Theoretical and Applied Information Technology pp 780 - 786 Vol. 47. No. 2 -- 2013
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Title:	A NETWORK MANAGEMENT SYSTEM FOR EPON BASED ON SNMP
Author:	HONGYU FENG, GUOYI MIAO
Abstract:	Now, the PON technologies become the preferred broadband access technology all over the world. In this paper, a network management system is designed for EPON. In Manager and Agent, the “simple and shortcut” protocol SNMP is adopted to develop the application program. As the Agent runs on the embedded system, protocol choice and database design are critical to the system. The paper focuses on the structural characteristics of the agent side, and achieves network communications management of agent side. Finally, the system is tested on the development board, and achieves better results. The system is real-time, timely capture of the trap, protect EPON network running well.
Keywords:	EPON, Network Management, SNMP, Agent, Trap
Source:	Journal of Theoretical and Applied Information Technology pp 787 - 791 Vol. 47. No. 2 -- 2013
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Title:	HONEYPOT BASED INTRUSION MANAGEMENT SYSTEM: FROM A PASSIVE ARCHITECTURE TO AN IPS SYSTEM
Author:	ELMEHDI BENDRISS, BOUBKER REGRAGUI
Abstract:	In this paper, we are presenting an Intrusion Prevention System (IPS) based on multiple sensors in the network. These sensors are in fact honeypots built using honeyd. Honeyd is a high level honeypot which is very light and which is offering a lot of possibilities to get the most of information gathered about attackers in general. In fact, we are presenting a solution to go from passive and isolated sensors to a collaborative platform to help prevent intrusions by analyzing all collected data. To be able to do this, honeyd2db module was developed to enable honeyd to log its data into a database instead of a local file to the sensor. This aggregation of data from all sensors give us the possibility to analyze all collected logs as a hole and come out with a decision (deny network traffic on a firewall for example) using any of the known methods of data analysis.
Keywords:	Intrusion Prevention System (IPS), Honeypots, Honeyd, Network Sensors, Distributed System
Source:	Journal of Theoretical and Applied Information Technology pp 792 - 797 Vol. 47. No. 2 -- 2013
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Title:	POSITION CONTROL OF ARM MECHANISM USING PID CONTROLLER
Author:	ASNOR JURAIZA ISHAK, AZURA CHE SOH, MOHAMAD ASMI ASHAARI
Abstract:	This paper presents the application of rotary encoder for a motion of a gripper mechanism using PID controller. The approach consists of a robotic arm’s whose movement are controlled by a brush DC motor. The brush DC motor shaft was mounted to the rotating wheels where a rope and pulley system was used to lift the robotic arm. The strategy of feedback compensation is used when controlling a system using a PID controller. With the presence of rotary encoder enables the microcontroller to control the speed of the robotic arm with the PID controller. As results, the robotic arm can be operated smoothly and achieved the desired position compared to the ON and OFF controller. The program using PID controller has been created with the microcontroller as the controller for the system. The robotic arm has been interface with rotary encoder and implemented with PID controller and it is possible for any robotic application if the feedback signal is provided.
Keywords:	Gripper Mechanism, PID Controller, Rotary Encoder, Robotic Motion
Source:	Journal of Theoretical and Applied Information Technology pp 798 - 806 Vol. 47. No. 2 -- 2013
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Title:	PROGRAMMABLE LOGIC IMPLEMENTATION OF ECHO HIDING FOR AUDIO WATERMARKING
Author:	JUAN A. R. CHÁVEZ, CARLOS A. RUIZ, DOLORES Z. SAAVEDRA
Abstract:	Currently, distribution, and marketing copy music files are very common activities due to free internet connection that facilitates this. To solve this problem, digital watermarking is proposed. In this paper we propose an accurate and content based algorithm for embedding and detecting watermarks within audio signals. The algorithm is based on a new implementation of echo hiding technique for audio watermarking; this algorithm proposes embedding bits (watermark) within blocks of the original audio samples. This implementation was done into a FPGA (Field Programmable Gate Array) hardware; the watermarked audio clips were evaluated by calculating the ODG (Objective Difference Grade) established by the ITU (International Telecommunications Union). The ODG average obtained was -0.98, a result that indicates that the embedded watermark embedding using the proposed algorithm is imperceptible to the Human Auditory System (HAS). This will make the system highly accurate and robust against signal processing attacks in comparison with other methods, this tests was implemented with de Audiostirmark data base.
Keywords:	Audio Watermarking, Echo Modulation, Embeeding
Source:	Journal of Theoretical and Applied Information Technology pp 807 - 815 Vol. 47. No. 2 -- 2013
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Title:	A BASED RULES APPROACH FOR DISTRIBUTED TEST
Author:	MY El HASSAN CHARAF, MOHAMMED BENATTOU, SALMA AZZOUZI
Abstract:	Since testing is a continuous activity throughout the entire development process, it is important to take into account the inherent complexity of the distributed systems architecture that require special testing techniques. In fact, in the distributed test context where a set of parallel testers exchange I/O messages to perform the test, some potential problems of coordination can arise amongst remote testers. These problems are usually known as controllability and Observability issues. The emphasis of recent works is focused on the use of rules based systems that describe the system behavior by simple rules which increase the flexibility and easiness of programming. In this paper, we introduce some technical issues for testing distributed frameworks using rules based systems to overcome such problems.
Keywords:	Rules-based system; Distributed test; Rules; Controllability and Observability Problems; Synchronization.
Source:	Journal of Theoretical and Applied Information Technology pp 816 - 823 Vol. 47. No. 2 -- 2013
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Title:	A NEW COMBINATION METHOD OF FIREFLY ALGORITHM AND T2FSMC FOR MOBILE INVERTED PENDULUM ROBOT
Author:	MARDLIJAH , ACHMAD JAZIDIE, BASUKI WIDODO, ARI SANTOSO
Abstract:	T2FSMC has succesfully overcome the chattering and robustness problems implementing on mobile inverted pendulum robot. The remaining drawback is the gain scale factor of controller determination of Fuzzy Type 2 that is still doing trial and error. Firefly Algorithm will be used in this paper to determine the best gain scale factor of controller of Fuzzy Type 2 automatically. Utilized as objective function is the ITAE Value of resulted response signal representing firefly light. It is proved from the simulation that the proposed method can effectively resulting optimal gain scale factor and the controller can solve chattering problem more effectively and more robust against disturbances and parameter uncertainties compared with trial error based.
Keywords:	FireFly Algorithm, Fuzzy Sliding Mode Control, Mobile Inverted Pendulum Robot
Source:	Journal of Theoretical and Applied Information Technology pp 824 - 831 Vol. 47. No. 2 -- 2013
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Title:	AGENT BASED ADAPTIVE EDUCATIONAL CHAT TOOL MODEL
Author:	Nidal A.M Jabari
Abstract:	There are many adaptive educational systems . These systems depend mainly on the student model that stores information related to the student, including the level of knowledge the student has in concepts , Domain model which organizes the sequence and the structure of the educational materials, and also the adaptation model which performs the adaptation paln. Some of these systems use in its functions additional tools such as chat rooms. The problem of the chat rooms in these systems that they present the participants either students or teachers in the same format. Since the majority of students in open education do not know each other personally because they don't attend traditional class ,it is impossible to identify the most appropriate peer to discuss the concept with .Therefore, all students will discuss directly with the teacher about the concept , causing high pressure on the teacher prevented him from answering all inquiries of the students and thus lose a lot of the students their chance of discussion. Through this paper we present a model to solve this problem. Model depends mainly on the student model and domain model to arrange the students with different colors within the chat room . These colors indicate the level of knowledge of the student participate in the chat room, and thus show in better way the most appropriate peer for discussion with him about the concept. This will distribute the discussion within the chat room among students and reduce the strain on the teacher. The model depends on a variety of smart agents to perform the function required. 1) Adaptation agent 2) Interface and 3) monitoring agent .
Keywords:	Collaborative Adaptive, Open University , AHA! , Agent ,Adaptation
Source:	Journal of Theoretical and Applied Information Technology pp 832 - 839 Vol. 47. No. 2 -- 2013
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Title:	SMALL SIGNAL ANALYSIS OF FLEXIBLE AC TRANSMISSION SYSTEM USING INTERLINE POWER FLOW CONTROLLER (IPFC)
Author:	CH. VENKATA KRISHNA REDDY, K.KRISHNA VENI, G.TULASIRAM DAS, SIRAJ
Abstract:	The Interline Power Flow Controller (IPFC) is a voltage-source-converter (VSC)-based flexible ac transmission system (FACTS) controller which can inject a voltage with controllable magnitude and phase angle at the line-frequency thereby providing compensation among multiple transmission lines. In this paper, the use of the IPFC based controller in damping of low frequency oscillations is investigated. An extended Heffron-Phillips model of a single machine infinite bus (SMIB) system installed with IPFC is established and used to analyze the damping torque contribution of the IPFC damping control to the power system. The potential of various IPFC control signals upon the power system oscillation stability is investigated a using controllability index. The effect of this damping controller on the system, subjected to wide variations in loading conditions and system parameters, is investigated. Results of simulation investigations in Matlab are presented to validate the proposed approach.
Keywords:	FACTS, IPFC, Damping, Small signal Stability
Source:	Journal of Theoretical and Applied Information Technology pp 840 - 851 Vol. 47. No. 2 -- 2013
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Title:	EFFICIENT TECHNIQUES FOR SECURING DIGITAL VIDEO DATA
Author:	ROOPALAKSHMI S, ROSHNI PORWAL, K. JOHN SINGH, R. MANIMEGALAI
Abstract:	With fast developments in digital media and communication, transmission of video data over Internet is unsecured due to various security threats. Digital video should be encrypted using any of the cryptographic methods in order to prevent security threats. Cryptography is used for encrypting and decrypting the digital data. Traditional cryptographic systems are often not enough for fast transmission of huge volume of data. In this paper, we study various video encryption mechanisms and analyze their performance. This paper also proposes a new technique called Enhanced Frequency Domain Scrambling Approach (EFDSA) for encrypting video data. Our analysis and experimental results obtained show that the proposed method has less computational overhead and execution time.
Keywords:	Enhanced Frequency Domain Scrambling Approach (EFDSA), Cut and Rotate Technique, Transform Domain Scrambling, Codestream Domain Scrambling, Intra Block Shuffling.
Source:	Journal of Theoretical and Applied Information Technology pp 852 - 859 Vol. 47. No. 2 -- 2013
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Title:	ENERGY EFFICIENT DISTRIBUTED IMAGE COMPRESSION USING JPEG2000 IN WIRELESS SENSOR NETWORKS (WSNS)
Author:	A.KARTHIKEYAN, T.SHANKAR, V.SRIVIDHYA, SURYALOK.SARKAR,AKANKSHA GUPTE
Abstract:	Restricted computational power, memory limitations, narrow bandwidth and energy supplied present strong limits in sensor nodes are the important points should be considered during the real time transmission of data using wireless sensor networks. Therefore, maximizing network lifetime and minimizing energy consumption are always optimization goals. To reduce the energy consumption of the sensor network during image transmission, an energy efficient image compression scheme is proposed. The image compression scheme reduces the required memory. To address the above mentioned concerns, in this paper, an approach of image transmission in WSNs, taking advantage of JPEG2000 still image compression standard and using MATLAB and C from Jasper. The features provided by JPEG2000 were achieved using techniques such as Discrete Wavelet Transform (DWT) and Embedded Block Coding with Optimized Truncation (EBCOT).Image quality and energy consumption are the two performance parameters should be considered during the image compression and transmission. Simulation results are presented and show that the proposed scheme optimizes network lifetime and reduces significantly the amount of required memory by analyzing the functional influence of each parameter of this distributed image compression algorithm.
Keywords:	WSNs; Image compression; Energy conservation; System lifetime; JPEG2000; MATLAB; DCT;JPEG;PSNR
Source:	Journal of Theoretical and Applied Information Technology pp 860 - 869 Vol. 47. No. 2 -- 2013
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Title:	A MULTI-STEP PREDICTION MODEL BASED ON INTERPOLATION AND ADAPTIVE TIME DELAY NEURAL NETWORK FOR TIME SERIES
Author:	LIANG GAO, YIHUA ZHANG, MENG ZHANG, LIMIN SHAO, JINGXIN XIE
Abstract:	The drawback of indirect multi-step-ahead prediction is error accumulation. In order to tackle this problem and improve the capacity of adaptive time delay neural network (ATNN) for prediction, a three-stage prediction model SATNN based on spline interpolation and ATNN is presented. With spline interpolation and ATNN, the impact of last prediction errors that would be iterated into the model for the next step prediction is decreased, and then the better prediction can be obtained. The annual sunspot, considered as the benchmark chaotic nonlinear systems, is selected to test the multi-step prediction model. Validation studies indicate that the proposed model is quite effective in multi-step prediction.
Keywords:	Multi-step Prediction, Time Delay, Adaptive Time Delay Neural Network, Spline Interpolation
Source:	Journal of Theoretical and Applied Information Technology pp 870 - 874 Vol. 47. No. 2 -- 2013
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