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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
November 2012 | Vol. 45 No.1

Title:	EXPERIMENTAL DESIGN OF CAPACITANCE REQUIRED FOR SELF-EXCITED INDUCTION GENERATOR
Author:	V. SANKARDOSS, S. P. SABBERWAL, K. RAJAMBAL
Abstract:	This paper presents the no-load practical synchronous speed characteristics of a laboratory model induction machine of 120 W capacity. Critical, minimum and maximum capacitance required for excitation are calculated from the no load curve for voltage buildup, rated voltage and current respectively; at various super synchronous speeds. A realistic model of the machine is presented on Matlab/Simulink. Theoretical and practical results are compared for model validation.
Keywords:	Excitation Capacitance, Magnetization Curve, Synchronous Speed Test, Self-Excited Induction Generator, Wind Energy
Source:	Journal of Theoretical and Applied Information Technology pp 001 - 008 Vol. 45. No. 1 -- 2012
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Title:	THE IMPACT OF CONTROL OBJECTIVES OF INFORMATION AND RELATED TECHNOLOGY (COBIT) DOMAIN ON INFORMATION CRITERIA AND INFORMATION TECHNOLOGY RESOURCES
Author:	MO'TAZ AMIN AL-SA'EED, SOUD M. AL-MAHAMID, RIZIK M. H. AL-SAYYED
Abstract:	This research paper proposes and empirically examines the impact of Control Objectives of Information and related Technology (COBIT) domains on achieving the information criteria and on information technology resources of information systems to be considered reliable. This study aims mainly at answering the question: “Does Control Objectives of Information and related Technology (COBIT) domain have an impact on Information criteria and IT resources?” Questionnaires were distributed to 38 Jordanian banks. Our results indicated that there is a strong relationship between the three domains: planning and organization (PO), acquisition and implementation (AI), delivery and supporting (DS) on information technology resources (ITR) and people, information and application; where it is weak with infrastructure. The relationship, however, between monitoring and evaluation (ME) domain and people, application and infrastructure that is weak and where it is supported with adequate information. Also, the four COBIT domains: PO, AI, DS and ME have high impact on Information Technology Resources (ITR) with respect to people, information, application and infrastructure. The results indicated also that there is a strong relationship of PO on Information Criteria (IC) and the variables: effectiveness, efficiency, confidentiality, integrity, availability, compliance and reliability. For the AI domain, it was found that there is a strong relationship between (AI) and compliance, reliability and efficiency where there was found an average relationship along with the remaining variables. We noticed a very strong relationship between the (DS) domain and the seven variables. Moreover, the analysis indicated that the (ME) domain has a very good relationship with effectiveness, integrity and reliability; whereas an average relationship is noticed between the (ME) domain and confidentiality, availability and compliance and a weak relationship between the (ME) domain and efficiency. The four COBIT domains: PO, AI, DS and ME have high impact on IC with respect to effectiveness, efficiency, confidentiality, integrity, availability, compliance and reliability.
Keywords:	COBIT, Information Criteria, IT Resources, Control, Accounting Information Systems, and IT Governance
Source:	Journal of Theoretical and Applied Information Technology pp 009 - 018 Vol. 45. No. 1 -- 2012
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Title:	OPTIMAL INITIAL CENTROID IN K-MEANS FOR CRIME TOPIC
Author:	MASNIZAH MOHD, QUSAY WALID BSOUL, NAZLENA MOHAMAD ALI, SHAHRUL AZMAN MOHD NOAH, SAIDAH SAAD, NAZLIA OMAR, MOHD JUZAIDDIN AB. AZIZ
Abstract:	A wide number of different clustering method applications and their effectiveness in crime topics have been examined in this paper. Several works have investigated the optimal initial centroid of clustering crime topics. In this paper, wehave compared the effectiveness of single pass clustering and k-means in detecting crime topics and aiding in the identification of events or crimes. We have also experimentedon enhanced k-means clustering, in order to select the optimal initial centroid to be automatically compared with regular k-means, to choose the initial centroid randomly. Based on the main findings of this study, it was revealed that the experimental method, which was based on k-means, was proved to be better and more effective than single pass clustering in detecting and identifying events or crimes. For the initial number of centroids, it was found that the proposed method was more effective when used in selecting terms that were more than the number of topics, than when they were less. However, the best result was obtained when choosing a number of topics equal to the number of original topics. This implies that the optimal accuracy of clustering is achieved when selecting a large number of documents that have terms better than randomly chosen documents as a centroid.
Keywords:	Crime Clustering, Single Pass, K-Means, Crime Topic
Source:	Journal of Theoretical and Applied Information Technology pp 019 - 026 Vol. 45. No. 1 -- 2012
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Title:	A NOVEL TEXTURE-BASED ALGORITHM FOR LOCALIZING VEHICLE LICENSE PLATES
Author:	HINDE ANOUAL, SANAA EL FKIHI, ABDEILAH JILBAB, DRISS ABOUTAJDINE
Abstract:	License plates localization is an important task for the recognition of Vehicle License Plates (VLP). To deal with this issue, a number of approaches have been proposed. These include texture-based, morphology-based and boundary line-based approaches. In this paper, we present a new texture-based algorithm to detect and localize license plates in images. Yet, focus will be laid on Moroccan VLP. Analysis has actually revealed that the proposed algorithm achieves high accuracy in plate localization. For evaluation purposes, various images taken from different distances and in different angles were used. The experimental results show that our system can efficiently detect and localize the VLP in images. Indeed, the recall/precision curve of the proposed method proves that 84.21% precision rate is obtained for recall rate value equals 80%, while the value of the standard measure of quality is equal to 82.05%.
Keywords:	Text detection, Texture analysis, Descriptors, Vehicle License Plate Localization (VLPL)
Source:	Journal of Theoretical and Applied Information Technology pp 027 - 032 Vol. 45. No. 1 -- 2012
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Title:	NONLINEAR 8/6 SWITCHED RELUCTANCE GENERATOR EXCITED BY PARTICULAR CONVERTER
Author:	F. MESSAI, M. MAKHLOUF, H. BENALLA
Abstract:	This paper describes a consideration of the excitation circuit of a switched reluctance generator (SRG). The SRG is a doubly salient machine. It does not contain any magnets or brushes, and the phases are completely independent. The rotor is made of laminated iron and it does not have any winding. However, the conventional excitation circuit of this machine is an asymmetry half bridge converter (AHBC) whose configuration is complicated. In this paper, we present a nonlinear modeling and simulation of a four phase double salient switched reluctance generator (SRGDS 8/6) excited by a suppression resistor converter (SRC) based on finite-element analysis (FEA) and Matlab/Simulink.
Keywords:	Switched Reluctance Generator. Finite-Element Method (FEM) Analysis, Suppression Resistor Converter
Source:	Journal of Theoretical and Applied Information Technology pp 033 - 037 Vol. 45. No. 1 -- 2012
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Title:	THE RE-WINDER DRIVE SYSTEM DESIGN BASED ON COMMON DC BUS
Author:	WANG HONGYAN
Abstract:	According to the analysis of the common DC BUS control system about the re-winder, and based on the common DC BUS system structure analysis foundation , which has realized a set of complete re-winder drive system through the hardware disposition and the functional design, the paper describes that the system changes the model of the former drive system from the construction, and uses the selenium rectifier and inverter to realize module control, which restrains the harmonic interference, simplifies the construction, economizes energy and lessens money. The control system can meet the winder’s requirements of stability and precision.
Keywords:	Common DC BUS, Re-winder, System Design, Performance Analysis
Source:	Journal of Theoretical and Applied Information Technology pp 038 - 043 Vol. 45. No. 1 -- 2012
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Title:	RESEARCH AND APPLICATION OF WIRELESS NETWORK EQUIPMENT IN COAL MINE GAS MONITORING SYSTEM
Author:	HONGYU SUN, ZHIYI FANG, 1YAMIN LI, YANG YU, SIQI KONG AND YAO SUN
Abstract:	This paper presents a research which based on the protocol.802.11，which is a universal standard put forward for each manufacturer. The advance of this proposal not only guaranteed the data exchange of Wireless network of different manufacturer but also provided guarantee on the application in various area. Especially in recent years, home use wireless network provided chance of application in various areas of devices which are based on 802.11 protocols. This paper discussed the real time transfer technology of dangerous gas content which based on 802.11 protocols and the composition and method of well wireless network monitoring under the background of safety process for coal mine production. In the end, this paper proposed a solution of multi-functional monitoring system which composed of voice, image and data by using 802.11 protocols.
Keywords:	802.11 Protocol, Monitoring System, WIFI
Source:	Journal of Theoretical and Applied Information Technology pp 044 - 048 Vol. 45. No. 1 -- 2012
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Title:	RESEARCH OF DIFFERENT COLOUR MODEL OF COLOR CHARACTERISTIC IN DIGITAL IMAGE
Author:	WENGE CHEN，XUELIN HUANG
Abstract:	In this paper, using MATLAB and Photoshop to digital photos and all sorts of color model of color characteristics are researched, and writes a small program through the digital image processing software MATLAB。According to the number of color information which reflects the same photo with different color model of the three-dimensional spectrum. Using Photoshop histogram to verify the practicality of three-dimensional spectra, which has certain value for handling the digital original manuscript.
Keywords:	Color Model; Color Characteristics; Three-Dimensional Spectra; Digital Image; Histogram
Source:	Journal of Theoretical and Applied Information Technology pp 049 - 053 Vol. 45. No. 1 -- 2012
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Title:	APPLICATION OF ABNORMAL ECG EARLY WARNING DATABASE OF CARDIAC REMOTE MONITORING SYSTEM
Author:	CHEN SHOUQIANG, GAO HAIQING, BIAN XIAOYUAN,4YI YONGLI, CHEN YANQIANG
Abstract:	Objective: To study application value of abnormal ECG early warning database of cardiac remote monitoring system. Methods:In the respect of clinical application,6575 users wear iHolter, using CM1, CM5 dual channel recording and the mode of automatically and quietly warning.We analyzed automatic alarm of ECG data. At the same time,the application of abnormal ECG early warning database in scientific research, teaching and other aspects was discussed. Results: In 6006 users for diagnosis of diseases, we found ECG abnormalities in 5882 cases, including episodic atrial premature beats, frequent atrial premature beats, occasional ventricular premature contractions, frequent ventricular premature contractions, paroxysmal atrial tachycardia, paroxysmal atrial flutter, paroxysmal atrial fibrillation, paroxysmal ventricular tachycardia, intermittent preexcitation syndrome, asymptomatic myocardial ischemia, in which 23 cases were found nothing in multiple routine ECG. By the automatic alarm recording, we found paroxysmal ventricular tachycardia in 162 cases, frequent ventricular premature contraction in 51 cases, obvious ST-T changes in 883 cases, fast ventricular rate of atrial fibrillation in 25 cases, paroxysmal supraventricular tachycardia in 129 cases, sinus arrest (maximum 6.03s) in 38 cases, and we all timely called the patients themselves or their family members. In 438 cases of operation care patients, we immediately proposed to suspend operation in 7 cases of apparent ST-T changes, 6 cases of frequent ventricular premature contraction and 6 cases of rapid ventricular rate with atrial fibrillation after receiving the automatic alarm ECG. In 131 cases of pacemaker patients, automatic alarm electrocardiogram showed paroxysmal atrial tachycardia in 7 cases, atrial premature beats in 27 cases, ventricular premature contractions in 12 cases, ST-T changes in 11 cases. Conclusion: Abnormal ECG early warning database of cardiac remote monitoring system had a high application value in clinical, scientific research , teaching, and other areas.
Keywords:	Cardiac Remote Monitoring System, Abnormal Electrocardiogram, Intensive Holter, Database, Application
Source:	Journal of Theoretical and Applied Information Technology pp 054 - 057 Vol. 45. No. 1 -- 2012
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Title:	FAULT TEST DEVICE OF ELECTRICAL SYSTEM BASED ON EMBEDDED EQUIPMENT
Author:	XIONG YUN, YANG XIAOQIANG, DUAN ZHUANGZHI, LI NING
Abstract:	The electrical system of the construction machinery usually works on circumstance of high temperature, serious vibration and shock, dust pollution as well as electromagnetic interference, so the electrical system is very likely to go wrong while compared with other systems, for example working attachment, under chassis and so on. In view of this, an advanced fault test device, with application of embedded equipment and virtual technology, is developed in this work. The function and implementation of software are illustrated. The device is composed of PDA, cradle and CF-bus data acquisition card. It can test and diagnose the circuit and electronic component fault. Furthermore it stores the data and upload data to server simultaneously for further diagnosis and processing of repair and maintenance expert. The fault test device may be utilized in fault diagnosis of electrical system and components of engineering vehicles, subsequently improve the maintenance and diagnosis capability for the electrical system.
Keywords:	Embedded Equipment, Virtual Instrumentation, Fault Diagnosis, Electrical System.
Source:	Journal of Theoretical and Applied Information Technology pp 058 - 062 Vol. 45. No. 1 -- 2012
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Title:	DIVIDING AND CLUSTERING ALGORITHMS OF MOVING OBJECTS IN RFID TRACING SYSTEM
Author:	KONGFA HU, XIANGQIAN XUE, JIANFEI GE, YAN SUN, LING CHEN
Abstract:	Trajectory clustering can predict moving trend of objects effectively. The traditional trajectory clustering algorithms take moving trajectory of a whole object as a research object, which will lose similar sub-trajectories. However, in practical applications, such as in RFID system, the users may only focus on some specific regions of trajectories. We propose PT-CLUS algorithms in this paper, according to coarse-fine algorithm, which first dividing a trajectory into a group of line segments and prunes by coarse-fine strategy, and then searching cluster in the sub-trajectories by checking neighborhood region of segments, using hierarchical clustering to accomplish the clustering of sub-trajectories. Experiment result shows that PT-CLUS algorithm can find the similar sub-trajectories from RFID trajectory database effectively.
Keywords:	Moving Objects; RFID; Line Segment; Sub-Trajectories; Clustering
Source:	Journal of Theoretical and Applied Information Technology pp 063 - 066 Vol. 45. No. 1 -- 2012
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Title:	P-SETS AND ITS APPLICATION IN THE UNKNOWN INFORMATION IDENTIFICATION
Author:	XIYAN SUN, XIDONG LIU, CHENGXIAN FAN
Abstract:	P-sets (Packet sets) is novel mathematics structure and model by introducing the dynamic characteristics into the finite Cantor set X and improving it. P-sets is a set pair composed of internal P-set (internal packet set ) and outer P-set (outer packet set ), or is P-sets. Based on P-sets, some theorems are presented, which are internal-dynamic reasoning and information deleted theorem, outer-dynamic reasoning and information supplemented theorem, internal-outer dynamic reasoning and information deleted-supplemented theorem and so on. By using the results, the application of internal-dynamic reasoning in the unknown information identification is given. P-sets is a novel model and method with good application prospect in the intelligent information system.
Keywords:	P-Sets, Dynamic Reasoning, Information Deleted, Information Supplemented
Source:	Journal of Theoretical and Applied Information Technology pp 067 - 071 Vol. 45. No. 1 -- 2012
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Title:	AN IMPROVED APPROACH FOR GEARBOX CONDITION MONITORING BASED ON WAVELET-FRACTAL ANALYSIS
Author:	WEIGUO HUANG, RONGFANG ZENG, ZHIYONG HE, PENG LI
Abstract:	This paper has classified the acceleration signals of different working states of gearbox based on the wavelet-fractal analysis. Considering the similarity of the power spectrums between bearing vibration signals and 1/f processes signals, the principles based on wavelet-fractal analysis for gearbox fault diagnosis are explored. The improved approach mainly includes three following steps: the discrete wavelet transform (DWT) is first performed on vibration signals gathered by accelerometer from gearbox to achieve a series of detailed signals at different scales; the variances of multiscale detailed signals are then calculated; finally, the improved approach slope features are estimated from the slope of logarithmic variances. The presented features reveal an inherent structure within the power spectra of vibration signals. The effectiveness of the proposed feature was verified by experiment on gear wear diagnosis. Experimental results show that the improved approach features have the merits of high accuracy and stability in classifying different fault conditions of gearbox, and thus are valuable for machine fault diagnosis.
Keywords:	Gearbox, Condition Monitoring, Wavelet-Fractal Analysis
Source:	Journal of Theoretical and Applied Information Technology pp 072 - 076 Vol. 45. No. 1 -- 2012
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Title:	HYBRID VARIABLES STRUCTURAL RELIABILITY MODEL BASED ON POSSIBILISTIC RELIABILITY THEORY
Author:	QIANGFENG WANG, JIANJUN LI
Abstract:	In this paper, based on possibilistic reliability theory, the hybrid variables structural reliability model, which includes fuzzy variables and interval variables, is researched. The hybrid variables structural reliability model is established based on possibilistic reliability theory. The analytical algorithms of minimum fuzzy reliability index and maximum failure possibility degree in hybrid variables structural reliability analysis are derived in detail. The constraint conditions of hybrid variables structural reliability model are analyzed. The reliability optimum design method of hybrid variables structure is researched. By evaluation of hybrid variables structural reliability through practical examples, it proved that, in the case of two uncertain variables coexisting, the theory presented in this paper is feasible and effective. And thus, it will have great significance in actual engineering, especially for reliability design of complex structures.
Keywords:	Possibilistic Reliability, Hybrid Variables Structure, Interval Variable, Fuzzy Variable
Source:	Journal of Theoretical and Applied Information Technology pp 077 - 082 Vol. 45. No. 1 -- 2012
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Title:	ERROR DISTINGUISH OF AIS BASED ON EVIDENCE COMBINATION
Author:	FENG MA, XIUMIN CHU, XINPING YAN, CHENGUANG LIU
Abstract:	The Automatic Identification System (AIS) is essential digital communication equipment for maritime safety in inland rivers. The occasional error of GNSS (Global Navigation Satellite System) devices in the AIS equipment will make the terminal send fake dynamic information discontinuously, which needs to be distinguished manually. With the help of the DSmT method, gathering and qualifying the ships motion and lane characteristics, making mathematical models of Dθ discernment frame, it is possible to develop the artificial intelligence. And it is able to discriminate the abnormal messages to improve the reliability of AIS data link. The method has been proved feasible and effective in both simulation environment and field data processing.
Keywords:	DSmT Method, Automatic Identification System, Evidence Combination
Source:	Journal of Theoretical and Applied Information Technology pp 083 - 090 Vol. 45. No. 1 -- 2012
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Title:	ORTHOGONAL APPROXIMATELY HARMONIC PROJECTION FOR FACE RECOGNITION
Author:	XIA SUN, ZIQIANG WANG, LIJUN SUN
Abstract:	Face recognition has attracted growing attention for applications such as identity authentication and human-computer interface. However, a major challenge of face recognition is that the captured face image often lies in a high-dimensional feature space. To overcome the curse of dimensionality problem and improve the performance of face recognition, a novel manifold learning algorithm called orthogonal approximately harmonic projection (OMMP) is proposed in this paper. The OAHP algorithm is based on the harmonic projection (AHP) and explicitly considers the local geometrical structure and cluster structure of the face space. Meanwhile, the OAHP method can produce orthogonal basis vectors to preserve the metric structure of face space, which greatly enhances the discriminating power of the reduced lower-dimensional feature space. Experimental results on three face databases show that the proposed OAHP performs much better than related algorithms in terms of recognition rate.
Keywords:	Face Recognition, Orthogonal Approximately Harmonic Projection, Manifold Learning
Source:	Journal of Theoretical and Applied Information Technology pp 091 - 098 Vol. 45. No. 1 -- 2012
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Title:	PUBLISH/SUBSCRIBE NETWORK INFRASTRUCTURE BASED ON WEB SERVICE NOTIFICATION
Author:	RUISHENG SHI, YANG ZHANG, BO CHENG, JUNLIANG CHEN
Abstract:	To accommodate real-time dynamic large scale service composition requirements, Event-Driven Service Oriented Architecture (EDSOA) is introduced to solve the shortcomings of Service Oriented Architecture (SOA). Our EDSOA service execution platform is built on Web Service Notification based distributed topic-based publish/subscribe infrastructure services. This paper presents our innovations at system level on the design of publish/subscribe infrastructure service. Several service systems are developed based on this platform. The platform provides great flexibility and many advanced features for service development and deployment. Through project practices, the platform was proved to simplify the development work of service system significantly.
Keywords:	Topic-Based Publish/Subscribe, Distributed Event-Based System, Service Computing, Web Service Notification, Routing
Source:	Journal of Theoretical and Applied Information Technology pp 099 - 108 Vol. 45. No. 1 -- 2012
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Title:	EFFECTS OF DESIGN PARAMETERS ON WIND SPEED FOR LARGE THREE-BLADED UPWIND HORIZONTAL AXIS WIND TURBINE
Author:	ZHIGANG KONG, JIAN WANG, YIGANG KONG
Abstract:	For large three-bladed upwind horizontal axis wind turbine, the blade spatial positions are different with the rotor running at the same time, and so, the wind speed on the blade is variable due to wind shear and tower shadow. Some specific design parameters such as rotor hub height, hub-height wind speed, wind shear coefficient, radius of the rotor disk, tower radius and overhang distance are taken into account in the wind speed model. Based on the model, the influence of wind shear and tower shadow on wind speed for a two-megawatt wind turbine is investigated. The experimental results show that due to the presence of wind shear and tower shadow, not only the above parameters can make the value of wind speed change remarkably, but also this influence is more and more serious as wind turbine capacity increases.
Keywords:	Design Parameters, Tower Shadow, Wind Shear, Wind Speed, Wind Turbine
Source:	Journal of Theoretical and Applied Information Technology pp 109 - 116 Vol. 45. No. 1 -- 2012
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Title:	AN OPTIMUM ALGORITHM FOR CUT-OFF GRADE CALCULATION USING MULTISTAGE STOCHASTIC PROGRAMMING
Author:	SHOUGUO LI, CHANG YANG
Abstract:	Cut-off grade is one of the very important technical and economic parameters, which affects the economic and social efficiency in a mine enterprise. It is also the basis of the deposits technical economy evaluation, feasibility study, mining planning and design and the foundation of the decision-making in mining investment. Thereby, cut-off grade optimization is one of the core contents and therefore the key parameter in mine mining, management and decision. The optimized determination of cut-off grade in mine mining involves complex analysis and scientific calculation, which is tightly related to economic management, ore dressing, mining, geology, applied mathematics and computer knowledge subjects. In this paper, we modeled the cut-off grade optimization problem as a multistage stochastic programming issue. In the proposed stochastic programming model, each ore grade in a given ore body is a random variable following a distribution. And a mathematical model for selecting an optimum cut-off grade function was constructed, which aimed at the maximization of total present value of an open pit. Experimental results show that the proposed algorithm for cut-off grade optimization is efficiency.
Keywords:	Cut-off Grade, Optimization, Net Present Value, Stochastic Programming
Source:	Journal of Theoretical and Applied Information Technology pp 117 - 122 Vol. 45. No. 1 -- 2012
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Title:	DESIGN AND IMPLEMENTATION OF A HIGH-SPEED DATA ACQUISITION TOMOGRAPHY SYSTEM
Author:	BIN CAI, BIN WANG
Abstract:	In order to implement online real-time non-destructive detection of turbine fluid distribution and the internal operation of the rotating machinery, we designed a high-speed data acquisition system based on PCI7300A and a high speed microcontroller—UBICOM. It is also for a further goal of carrying on graphical fault diagnosis and fault-tolerant control. This paper describes the system structure and introduces the methods used to implement the system, as well as the design concept and the principle of this program. The practical application showed that the system can realize online real-time collection of tomography projection data, and the acquisition speed can be up to 80M bit/s. Thus non-destructive testing of a rotary mechanism with a high rotation speed of 5000 r / min could be achieved.
Keywords:	Non-Destructive Testing, Fault Diagnosis, Fault-Tolerant Control, Data acquisition, Real Time
Source:	Journal of Theoretical and Applied Information Technology pp 123 - 128 Vol. 45. No. 1 -- 2012
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Title:	DESIGN AND IMPLEMENTATION OF P2P TRUST MODEL BASED ON THE CLASSIC BAYESIAN NETWORKS THEORY
Author:	XIAOHONG SHI, YANYI ZHANG
Abstract:	Based on Bayesian network theorem, the paper proposed the novel trust model of P2P network named Trust-BT. The novel new Trust-BT model is based on the P2P network nodes’ history of all types of transactions, prior experience, the use of Bayesian statistical analysis methods calculate the global trust value of every network node, select the node with high trust value node transactions. The mathematical analysis and the simulation results are shown that the model can effectively resist all kinds of malicious nodes attack, compared with the classic trust model (i.e. Eigentrust) improve the successful transaction rate of P2P network.
Keywords:	Transaction History, Bayesian Theorem, Posterior Probability Density, Hypothesis Testing
Source:	Journal of Theoretical and Applied Information Technology pp 129 - 135 Vol. 45. No. 1 -- 2012
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Title:	ON-LINE PORTFOLIO SELECTION VIA MEAN REVERSION STRATEGY
Author:	LI GAO, WEIGUO ZHANG
Abstract:	This paper presents a novel adaptive algorithm using mean reversion strategy without transaction cost. The antiocr algorithm only exploits the property of “reversal to the mean” and its performance not only significantly depends on the size of window but also fluctuates wildly according to the different size of window. To overcome these limitations, this proposed algorithm is designed to deal with the portfolio selection problem by fully exploiting both the price momentum and the price reversal in Chinese stock markets. Equipped with several parameters, the proposed mean reversion strategy can better track the changing stock market. Extensive experiments on real stock data from Chinese markets demonstrate the effectiveness of our strategies in comparison with the anticor algorithm without knowledge of the investment duration.
Keywords:	Online Portfolio, Universal, Mean Reversion, Momentum, Reversal
Source:	Journal of Theoretical and Applied Information Technology pp 136 - 143 Vol. 45. No. 1 -- 2012
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Title:	SERIALLY CONCATENATED CODED M-ARY CONTINUOUS PHASE MODULATION WITH BIT-INTERLEAVER
Author:	ZHIJUN ZHANG, YUJIE YANG, XIANFANG WANG, XINTAO DUAN
Abstract:	This letter investigates a serially concatenated convolutional coded M-ary continuous phase modulation (CPM). Using the decomposition model of a CPM system, the soft-input-soft-output detectors for M-ary CPM is investigated in detail. Based on these, the performance of bit-interleaved coded-modulation (BICM) schemes is studied. Simulation results show that due to the presence of the conversion between symbol and bit likelihoods, so to improve the BER performance by the iterative scheme is no longer the best choice. In the case of the short information frame and low signal-to-noise ratio region, the coded modulation system based M-ary CPM can achieve better performance than coded M-ary QAM system with the same spectral efficiency. The proposed system is bandwidth- and power-efficient, and moreover it is able to against burst errors effectively.
Keywords:	Iterative Decoding, M-ary Continuous Phase Modulation (CPM), Serial Concatenated Codes
Source:	Journal of Theoretical and Applied Information Technology pp 144 - 148 Vol. 45. No. 1 -- 2012
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Title:	SINE MOVABLE TEETH PROFILE EQUATION ESTABLISHMENT AND SIMULATION
Author:	XIANGYANG JIN, HETENG WANG, LILI ZHAO, YOUZHI ZHANG, YU SUN
Abstract:	The driving shaft as well as the tooth profile equation of the shell spatial sine raceway has been established according to the spatial meshing theory. And the tooth profile simulation has been also conducted. It is required to carry on the force analysis on the single tooth and establish the spatial mechanical model of the cylindrical sine movable teeth drive based on the deformation compatibility conditions. At the same time, the principal curvatures of the contact point between the sine raceway and the movable tooth have been calculated and the distribution rules have been also analyzed. What’s more, the spatial motion of movable teeth has been discussed and the formula of sliding rate between the conjugate profiles has been given. And the influence of the changes of structure parameters of movable teeth drive on the sliding rate has been also qualitatively analyzed in this paper.
Keywords:	Tooth Profile Equation, Movable Teeth Drive, Conjugate Profile, Spatial Meshing
Source:	Journal of Theoretical and Applied Information Technology pp 149 - 153 Vol. 45. No. 1 -- 2012
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Title:	NOVEL ACO BASED ON ENTROPY AND ITS APPLICATION IN ANALYSIS OF STRUCTURAL RELIABILITY
Author:	YANCANG LI, CAHENGUANG BAN, SHUJING ZHOU, XIAOQIANG LI, ROUYA LI
Abstract:	In order to solve the premature convergence problem of the basic Ant Colony Optimization algorithm and find an effective method for the calculation of system reliability index of the structure, a promising modification with changing index was proposed. The main idea of the modification is to measure the uncertainty of the path selection and evolutional by using the average information entropy self-adaptively. Simulation study and performance comparison with other algorithms on Traveling Salesman Problem show that the improved algorithm can converge at the global optimum with a high probability. Finally, the algorithm was employed to the analysis of reliability of a structure, results shows that the work provides a new approach for solving the combinatorial optimization problems, especially the analysis of structural reliability.
Keywords:	ACO, Modification, Entropy, TSP, Structural Reliability
Source:	Journal of Theoretical and Applied Information Technology pp 154 - 159 Vol. 45. No. 1 -- 2012
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Title:	A LIGHTWEIGHT COOPERATIVE DETECTION FRAMEWORK OF DDOS/DOS ATTACKS BASED ON COUNTING BLOOM FILTER
Author:	CHUNYAN SHUAI, JIANHUI JIANG, XIN OUYANG
Abstract:	Detection and traceback of distributed denial of service (DDoS/DoS) attacks have become a challenge for network security. In this paper, we propose a lightweight cooperative detection framework (CCBFF) based on counting bloom filter to detect and trace DDoS/DoS attack online. The CCBFF contains 2 counting bloom filters CBF1 and CBF2. The CBF1 distinguishes different network connection topology of a router by the "options" field of IP-V4, encodes the existing DDoS/DoS attacks and all connected device's addresses and stored them. By querying the CBF1, the CBF2 recognizes suspicious packets, accumulates them and sends out super alerts to the victim. According to super alerts, the CCBFF at the victim-end recognize DDoS/DoS attacks. The experiment results show that the CCBFF is effective in detection and traceback different DDoS attacks.
Keywords:	Counting Bloom Filter, Attack Feature Code, Cooperative Detection and Traceback Framework, DDOS/DOS Attack, Router Information Flag
Source:	Journal of Theoretical and Applied Information Technology pp 160 - 167 Vol. 45. No. 1 -- 2012
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Title:	AN IMPROVED BLIND WATERMARKING ALGORITHM FOR IMAGE BASED ON DWT DOMAIN
Author:	YINGLAN FANG, LIN TIAN
Abstract:	This paper has brought forward an improved blind watermarking algorithm based on two-dimensional discrete wavelet transform. Watermarking applied binary image which had direct testing result and special meaning as watermark. Before embedded watermark, the watermarking image is pretreated by using Arnold scrambling to improve its security. According to the human eyes visual characteristic, it selected the watermark embedded position and improved its concealment. The specific means handled the original image two-level DWT and blocks DA sub-graph. Then it used scrambling watermarking values 0 and 1 as control signal to deal with coefficients in each block. It has achieved the watermarking information embedding. As the algorithm extracted watermark, it only needed use the relevant key without the original image and it had more practical value. Experimental results have showed that this algorithm had better concealment and improved the robustness and efficiency.
Keywords:	DWT, Blind Watermarking, Concealment, Robustness
Source:	Journal of Theoretical and Applied Information Technology pp 168 - 173 Vol. 45. No. 1 -- 2012
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Title:	IMPROVED ARTIFICIAL FISH SWARM ALGORITHM AND ITS APPLICATION IN OPTIMAL DESIGN OF TRUSS STRUCTURE
Author:	YANCANG LI, CHENGUANG BAN, SHUJING ZHOU, SHUANGHONG PENG, XIAOHAN ZHANG
Abstract:	To overcome the defects of Artificial Fish-Swarm Algorithm, an adaptive particle swarm optimization was proposed. The new algorithm employs the inertia weight adjustment strategy to dynamically adjust the idea of artificial fish's visual and step on the basic artificial fish. The chaotic early initialization was employed to improve the quality of group solutions of artificial fish. Then, it was applied to the optimal design of truss structures in size. Engineering practice and comparison with the other optimization algorithms show that the algorithm has good convergence and stability.
Keywords:	Artificial Fish-Swarm Algorithm, Adaptive, Truss, Structure Optimization, Chaos
Source:	Journal of Theoretical and Applied Information Technology pp 174 - 178 Vol. 45. No. 1 -- 2012
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Title:	ENSEMBLE MODELING OF MILL LOAD BASED ON EMPIRICAL MODE DECOMPOSITION AND PARTIAL LEAST SQUARES
Author:	LIJIE ZHAO, JIAN TANG, WENGRONG ZHENG
Abstract:	Reliable measurements of ball mill load parameters and reorganization of the operating statuses are the key factors for saving energy and optimization control. Empirical mode decomposition (EMD) and partial least squares (PLS) are used to analyze shell vibration signal and monitor mill load parameters of ball mill. The shell vibration signal is decomposed into several intrinsic mode functions (IMFs) adaptively. The power spectral density (PSD) of each IMF is analyzed under different grinding conditions. A new index is defined to measure the relative change of each IMF to original signal, which is also used to select more informational IMFs. The ensemble PLS method is used to build soft-sensor models based on frequency spectrum of the selected IMFs. Experimental results show that ensemble soft-sensor model based on EMD and PLS can extract effective features of shell vibration signal and monitor mill load effectively.
Keywords:	Parameters Estimation, Vibration Signal Analysis, Empirical Mode Decomposition; Partial Least Squares, Ensemble Modeling
Source:	Journal of Theoretical and Applied Information Technology pp 179 - 191 Vol. 45. No. 1 -- 2012
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Title:	A NEW ONTOLOGY BASED ASSOCIATION RULES MINING ALGORITHM
Author:	PENG ZHU, FEI JIA
Abstract:	For traditional data mining techniques cannot be directly applied to the semi-structured XML data mining problem, this paper proposes a novel ontology and association rules based XML mining algorithm. The algorithm firstly introduces the domain ontology and hash technology to improve the operation of emerging frequent item sets and generating association rules, then uses a hash table to store the domain ontology, and at last the algorithm transforms the operation of the database into memory tree based on XML. Simulation results show that the algorithm can effectively reduce the size of XML documents and the association rules is easier to understand, so the advantages of the algorithm are shown.
Keywords:	Ontology, Data Mining, XML, Association Rules
Source:	Journal of Theoretical and Applied Information Technology pp 192 - 197 Vol. 45. No. 1 -- 2012
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Title:	A COMPREHENSIVE ANALYSIS OF ATTACKS ON ONLINE PAYMENT SCHEMES
Author:	LINA ZHANG, WENBIN YAN
Abstract:	When payments are to be made over the Internet, security becomes critical. The online banking system has become the preferred target of some attackers. To maintain the clients’ trust and confidence in the security of the services, the financial institutions and related research workers must identify how the attackers damage the user’s account and develop methods to enhance the security of the system. Based on analyzing the basic processes of online payment and the mode of attacks, the security and general prevention techniques are discussed. A complete analysis of the attack process in the transactions is given. In addition, some secure schemes and corresponding system design strategies against aggressive behaviors are proposed. This analysis and schemes are intended to be useful for commercial banks to adopt or to improve their online banking systems.
Keywords:	Online Banking, Public Key Infrastructure, Cryptographic Service Provider, Smart Card, Signature
Source:	Journal of Theoretical and Applied Information Technology pp 198 - 204 Vol. 45. No. 1 -- 2012
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Title:	NUMERICAL SIMULATION STUDY OF AIR DISTRIBUTION LAW OF AIR PRESSURE SYSTEM IN THE MINE REFUGE CHAMBER
Author:	FANGWEI LI, LONGZHE JIN, ZINA ZHAN
Abstract:	During the mine disaster, the refuge chamber becomes a living space for persons in distress, and it is an important topic to ensure the supply of oxygen in the refuge space in the study of the environment control of refuge chamber and survival support. Through the combination of RNG k-ε turbulence model, finite-volume discretion method and SIMPLE algorithm, the three-dimensional turbulence mathematics, physics models of refuge chamber air flow under air pressure and oxygen supply conditions are established, and corresponding laws are analyzed and the main parameters in environment control are determined, providing a theoretical basis for the design and layout of the refuge chamber.
Keywords:	Refuge Chamber, Air Pressure, Oxygen Supply System; Air Distribution Law, Numerical Simulation
Source:	Journal of Theoretical and Applied Information Technology pp 205 - 211 Vol. 45. No. 1 -- 2012
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Title:	APPLICATION OF BOILER-PREHEATER FUZZY COORDINATED CONTROL FOR CLINKER PLANT
Author:	XIANG ZHANG, JIDONG LU
Abstract:	A boiler-preheater fuzzy coordinated control system used in new type dry rotary kiln and pure low temperature waste heat recovery power generation has been presented in this paper. Heat of waste gas from cement kiln is recovered by the power generation. Significantly, SP boiler of the power generation recovers heat of the gas from kiln preheater. The temperature of the recovered gas from cement kiln is continuous fluctuant because of severe condition of cement kiln. The fluctuant temperature is unfavorable for power generation. For high efficiency of systems in of cement kiln and waste heat power generation, development and tests of the boiler-preheater fuzzy coordinated control system have been carried out in a cement kiln plant adding low-temperature waste heat power generation in Guangdong, China. The actual application result shown that the boiler-preheater fuzzy coordinated controller is available and efficient.
Keywords:	Coordinated Control, Fuzzy Controller, Kiln Preheater, SP Boiler, Clinker
Source:	Journal of Theoretical and Applied Information Technology pp 212 - 221 Vol. 45. No. 1 -- 2012
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Title:	AN DIGITAL FILTER DESIGN SCHEME BASED ON MATRIX TRANSFORMATION
Author:	ZHANG L, ZHANG DAN, ZHANG WEIXI
Abstract:	This work discussed the design steps of digital filter and methods of transformation from analog domain to digital domain. In order to use computer to solve the problem of recursive function whose order is N, this work derivates a transformed algorithm. The proposed scheme shifts system transformation to a coefficient matrix and a variable matrix. This work explains how to fix coefficient matrix and a variable matrix in detail. And at last, it takes advantage of feasibility and validity of simulation algorithm to verify it. The merits are as follows. First, it is very direct and it applies the calculation between matrix and matrix. And second, it is very general, so no matter it is from simulative low pass to digital low pass, or from simulative high pass to digital high pass, or from simulative band pass to digital band pass, this method can be used. Third, it is the fastest since there are fewest numbers of calculations.
Keywords:	Bilinear Transform, Digital Filter, Matrix Algorithms, Z Transform
Source:	Journal of Theoretical and Applied Information Technology pp 222 - 226 Vol. 45. No. 1 -- 2012
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Title:	A USER INTERESTS MODEL BASED ON ONTOLOGY
Author:	CUNCUN WEI
Abstract:	In this paper, the personalized service on the basis of lack of semantic and the strengths and weaknesses of the existing user model update mechanism, combined with keyword-based user interest ontology semantic information-rich features, design a classification knowledge base, combined with keywords and user interest ontology concept representation. The model of the user's interest is divided into short-term interests and long-term interest, and the two interested in using different establishment and update mechanism. By constantly updating and optimization model, the model can accurately reflect the characteristics of the user's interest. Finally, the effectiveness of the method is verified by experiments, experiments show that the model can improve the performance of user interest modeling.
Keywords:	User Interests Model, Ontology, Semantic Concepts, Personalization, Long-Term Interest, Short-Term Interest
Source:	Journal of Theoretical and Applied Information Technology pp 227 - 231 Vol. 45. No. 1 -- 2012
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Title:	A NEW DNA CRYPTOGRAM SCHEME BASED ON PCR TECHNOLOGY
Author:	YUNPENG ZHANG, DONGWEI ZHOU, LIU HE, YASIN HASAN KARANFIL, BOCHEN FU
Abstract:	In the condition of the traditional cryptogram which has been breached successively, this paper mainly studies the current cryptography-DNA cryptogram. Using biology question which has none solution in “if we don’t know the correct primer situations from an unknown mixture of trying to isolate specific DNA of DNA is quite difficult” as the safety of constructing DNA encryption algorithm. Using the chaotic system which is constructed by using Logistic chaos mapping and Henon chaos mapping to produce the pseudo-random to process the plaintext and eliminate the statistical rule. Building the encryption algorithm, and analyzing the DNA encryption algorithm based on PCR technology. And improve the algorithm in the key space, security, and experiment. Doing exclusive or operation between the binary code of plaintext, we can get the new code, and then append the primers. By this way, we can increase the number of primers, and the attackers can never get the plaintext unless he get all DNA chain with information. In addition, it will lead the failure if the target DNA chain is too long when doing the PCR amplification. In this encryption algorithm, the PCR amplification can be successfully by dividing the binary code of plaintext into many short sequences. This paper uses encryption examples to describe the whole encryption algorithm, and then analyses the security and maneuverability of the whole system. And then we get the whole system.
Keywords:	Information Security, DNA Cryptogram, Chaos, PC
Source:	Journal of Theoretical and Applied Information Technology pp 232 - 238 Vol. 45. No. 1 -- 2012
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Title:	DECISION MAKING IN INVESTING APPLICATION OF INTERVAL-PROMETHEE BASED ON THE COMPOSITE WEIGHT
Author:	SHUANGHONG QU, HUA LI, YUNXIA PEI
Abstract:	This paper introduces the interval-PROMETHEE method based on the composite weight to the decision making process of value investing. We use five performance criteria to measure the growth potential of the firms. They are represented by interval numbers from the real financial data. And the weights of the five criteria are compounded through the information entropy and the subjective method. The interval-PROMETHEE method is applied to rank all the stocks in Shanghai Stocks Exchange. The portfolio with the top 10 stocks was proven to have higher return than the top 20 stocks, and they all have higher return than the Shanghai index which represents the average performance of the Chinese stock market within the 22 month investment period. The empirical research shows the effectiveness of this method in the investment decision making.
Keywords:	Value Investing, Multi-Criteria Decision-Making, Interval-PROMETHEE; Composite Weight
Source:	Journal of Theoretical and Applied Information Technology pp 239 - 245 Vol. 45. No. 1 -- 2012
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Title:	A RESTRICTED-SCOPE LOOKUP SERVICE IN PEER-TO-PEER NETWORK
Author:	JIANCHUN LI, JIANYONG LI, DAOYING HUANG, LIHUA SHI
Abstract:	Consistent hashing-based P2P networks, which scalability is indicated by efficiency of query and maintenance cost, take the hashing algorithm as mapping relation between the data and the identifier of every node in the network. By analyzing some main characters in structured P2P network, we introduce the Restricted Scope Lookup Service(RSLS）to divide the network into some less size structured sub-systems, so as to limit the bound of routing message while keep the scalability of network. The logical relationship among nodes in sub-system is organized by the binary tree structure, in which some definitions and qualities are proved, and the self-organizing algorithm and the routing algorithm in sub-system are described too. Simulations have verified the cost of routing algorithm and stability scaling logarithmically with the number of nodes in sub-system.
Keywords:	P2P, Lookup Service, Structured Sub-Systems, Binary Tree
Source:	Journal of Theoretical and Applied Information Technology pp 246 - 251 Vol. 45. No. 1 -- 2012
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Title:	WHEELSET BEARING VIBRATION ANALYSIS BASED ON NONLINEAR DYNAMICAL METHOD
Author:	ZHAO ZHIHONG, LIU YONGQIANG
Abstract:	The wheelset bearing play an important role in train running safety. In this paper, we introduce the nonlinear dynamical method to study the wheelset bearing vibration signal. Based on the comparative studies of the phase graph and the correlation dimension of the vibration signals under normal condition, outer peeling fault condition and rolling element electric erosion fault condition, the following conclusions are shown: (1) The dynamical behavior of the wheelset bearing with fault is complicated than of the normal condition. (2) The correlation dimension of wheelset bearing is different under normal, outer peeling fault and rolling element electric erosion fault conditions. The correlation dimension can be used in wheelset bearing health monitoring. Therefore, it is quite reasonable to fault diagnosis of wheelset bearing to use nonlinear dynamical method.
Keywords:	Nonlinear Dynamic, Phase Space, Correlation Dimension
Source:	Journal of Theoretical and Applied Information Technology pp 252 - 256 Vol. 45. No. 1 -- 2012
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Title:	CONVERTING CONCEPTUAL MODEL XUML TO XML SCHEMA
Author:	XUEMIN ZHANG
Abstract:	As XML has become the standard for representing structured and semi-structured data on the Web, the methods for designing XML schemas is becoming more and more important. At present, a new XML conceptual model - XUML has already been put forward, but lacks the method of converting XML conceptual model to XML logical model . In this paper, an approach is proposed which a conceptual model XUML is converted to the XML Schema. Finally, a specific application example is illustrated, which proves the method the effectiveness and practicality.
Keywords:	XML, XUML, XML Schema
Source:	Journal of Theoretical and Applied Information Technology pp 257 - 264 Vol. 45. No. 1 -- 2012
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Title:	APPLICATIONS OF LOCAL-RANGE NETWORK THEORY IN DESIGNED P2P ROUTING ALGORITHM
Author:	YUNXIA PEI, GUANGCHUN FU
Abstract:	Peer-to-peer file sharing has a great prospect, Peer-to-peer search problems have become the academic focus of one of the research questions. Already distributed P2P systems for the lack of caching mechanism unorganized navigation capacity of the lack of global routing algorithm, is a disorderly search this end, this paper proposes the modified key clustering algorithm, the routing space the NT and ST layers of orderly search, from global perspective. Scalable Key clustering algorithm, we learn from the Local-range field research, inserted into the connector quick Link remote node in the routing table with a certain probability, to shorten the average path length. Preliminary simulation results have shown that the introduction of modified key clustering algorithm has better search capacity and scalability than original algorithm.
Keywords:	Routing, Modified Key Clustering, Local-Range, Peer-to-Peer Network
Source:	Journal of Theoretical and Applied Information Technology pp 265 - 272 Vol. 45. No. 1 -- 2012
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Title:	AN ELECTRICAL MOTOR FAULT DETECTION SCHEME BASED ON IMPROVED GENETIC ALGORITHM AND OPTIMAL NEURAL NETWORK
Author:	BIN REN, HUIJIE LIU, LEI YANG, LIANGLUN CHENG
Abstract:	With the development of Computer technology, data fusion and artificial intelligence theories, there are many new solutions for motor fault diagnosis. In terms of the motor fault characteristics, integrated diagnosis is implemented to solve this problem in this article, which adopts an improved genetic algorithm and optimizing neural network methods. That diagnosis method can not only reduce the difficulty of fusion system optimization, but also simulate the effect between different faults in coupling fault mode and achieve a precise diagnosis result. The research of the motor fault monitoring and diagnosis technology with this new method has the important theoretical value and engineering practical significance.
Keywords:	Fault Diagnosis, Improved Genetic Algorithm, Neural Network
Source:	Journal of Theoretical and Applied Information Technology pp 173 - 277 Vol. 45. No. 1 -- 2012
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Title:	A MOTION CONTROL METHOD OF FOUR-WHEEL DRIVE OMNI-DIRECTIONAL MOBILE ROBOTS BASED ON MULTI POINTS PREVIEW CONTROL
Author:	JIANPING CHEN, JIANBIN WANG, YIMIN YANG, QIJUN XIAO
Abstract:	Aiming at the problem that the traditional control methods can’t satisfactorily complete the trajectory tracking task, so a multi point preview control method based on automobile driving is designed for the motion control of four-wheel drive omni-directional mobile robot. Lateral position error and curvature of each preview point are calculated based on the robot’s lateral position error model. Meanwhile, by considering the current position error and preview point’s position error, a fuzzy controller is designed. The fuzzy controller adjusts the lateral velocity and longitudinal velocity according to the preview information of the different path conditions, so as to realize the expected trajectory tracking. Experiment results show that the tracking errors of different paths are obviously reduced, and the tracking precision is greatly improved , which means the preview control method presented in this paper is effective. It can realize fast track even when the tracking path varies a lot.
Keywords:	Omni-Directional Mobile Robot, Trajectory Tracking; Automobile Driving, Preview Control, Fuzzy Control
Source:	Journal of Theoretical and Applied Information Technology pp 278 - 284 Vol. 45. No. 1 -- 2012
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Title:	INTEGRATED MODEL FOR PRODUCT QUALITY FORECASTING SYSTEM USING GREY THEORY AND NEURAL NETWORK
Author:	JIHONG PANG, WEI XUE, HONGMING ZHOU, FENGPING LI
Abstract:	High-quality products are considered as one of the most important practices for achieving success. However, it is really hard to predict and forecast the product quality due to some undetermined parameters. In order to forecast product quality from various aspects, we propose an integrated model of utilizing grey theory and neural network. In this paper, the grey forecasting model for product quality is established by applying grey theory. Grey model is applied to compute an aggregated efficiency score based on the input and output data. Since quantitative factors are difficult to mathematically manipulate when forecasting the efficiency in neural network, a forecasting model is developed for product quality based on grey neural network model. In addition, analytical capability of the proposed method can reduce the number of training samples. In our case, this approach is demonstrated on a real and complete dataset of 36 samples for product quality. Finally, an example is given to explain the use and effectiveness of the proposed computational approach. As a result of this research, grey neural network can now be adequately applied to forecast the product quality.
Keywords:	Product Quality, Forecasting System, Grey Theory, Neural Network
Source:	Journal of Theoretical and Applied Information Technology pp 285 - 291 Vol. 45. No. 1 -- 2012
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Title:	FUZZY DYNAMIC CLUSTERING OF MOLD GRID RESOURCES BASED ON F-TEST
Author:	FANXIN KONG, HONGYAN HAO, JIANMIN ZUO
Abstract:	Fuzzy dynamic clustering algorithm of mold grid resources associated with the total lifecycle of mold based on F-test was constructed in this paper. To classify and establish mold manufacturing grid resources conveniently, this paper divides mold grid resources into seven types. Generally time (T), quality (Q), cost (C), service (S), reputation (R), liability (L) and environment (E) are chosen to be evaluation criterion for mold grid resources, according to the requirement of different manufacturing system. The weight of each index was calculated with AHP, and then mold grid resources are clustered and identified by fuzzy cluster method on the base of these. A reasonable classification number by using F- test is found, and best resources classification is obtained and similarity-based resources are clustered. Finally, simulation experiments are carried out with specific application for mold grid resources classification. The results show that the method is effective, and the paper applies fuzzy cluster analysis to sort the gird resources reasonably. It can improve search speed and utilization of mold grid resources, and the response time can be decreased in resources selection.
Keywords:	Fuzzy Dynamic Clustering, F-test, Manufacturing Grid, Mold Grid Resources
Source:	Journal of Theoretical and Applied Information Technology pp 292 - 296 Vol. 45. No. 1 -- 2012
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Title:	MOTION TRAJECTORY PLANNING METHOD OF LANE CHANGE FOR INTELLIGENT VEHICLE
Author:	AIJUAN LI, SHUNMING LI, HUAN SHEN, XIAODONG MIAO, XIAO LI
Abstract:	The motion planning method of lane change for intelligent vehicle is an important component in the autonomous vehicle field. In order to make the intelligent vehicle drive on the urban environmental road smoothly when there is a barrier in the front, a new curvature-continuous obstacle avoidance trajectory planning method was introduced. The trajectory planning method based B-spline curves and the convex hull property of the B-spline curves is used. The effection of several nonholonomic constrained conditions is considered in this method. The nonholonomic constraints include obstacle avoidance constraint, curvature constraint, rotational speed constraint, speed constraint, state constraint and so on. The intelligent vehicle’s lane change reference trajectory is generated, the trajectory is collision-free and the curvature is continuous. The intelligent vehicle’s lane change simulation experiment was done to test the trajectory planning method. The result showed that the feasible trajectory can be generated by use of this article’s method. The curvature of the trajectory is continuous and every nonholonomic constraint condition was met.
Keywords:	Intelligent Vehicle, Motion Trajectory Planning, Continuous Curvature, Lane Change, Β-spline Curve
Source:	Journal of Theoretical and Applied Information Technology pp 297 - 302 Vol. 45. No. 1 -- 2012
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Title:	EFFICIENT BELIEF PROPAGATION WITH CENSUS AND INTENSITY MEASURE
Author:	XIAOFENG WANG, HONGKE WANG
Abstract:	Stereo matching is one of the most active research areas in computer vision. In this paper, a novel stereo matching is proposed that utilizes Census measure and pixels-based intensity measure into data term of Belief Propagation algorithm. Traditional data term of Belief Propagation lies on pixels-based intensity measure, and its effect is not very well. We combine intensity and Census algorithm into data term, run through Belief Propagation algorithm and acquire more accurate results. This proposed method may be more exacter than traditional BP algorithm. The experimental results demonstrate the superior performance of our proposed method.
Keywords:	Stereo Matching, Belief Propagation, Markov Network, Census Measure, Intensity
Source:	Journal of Theoretical and Applied Information Technology pp 303 - 307 Vol. 45. No. 1 -- 2012
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Title:	A TRAFFIC NETWORK DESIGN SCHEME BASED ON TRAVEL TIME RELIABILITY
Author:	LIANGZHI ZHANG, LEI JIA, CHANGHONG MEI
Abstract:	On the basis of travel time reliability, this paper puts forward the concepts of absolute reliability and relative reliability to better assess road network; simultaneously, regional traffic road network reliability formula is deducted according to series and parallel connection of link, OD pair and road network. Finally, a bi-level programming model is established to optimize road network. The upper model, integrating travel resistance and travel time reliability in the objective function, optimizes and chooses investable links and the lower model guarantees stochastic user equilibrium. Both Monte Carlo Stochastic Simulation based genetic algorithm and Frank-Wolfe algorithm are employed as solutions. And Nguyen-Dupuis net work calculation sample shows different investment has different effect on road network optimization. Even with the same investment the effect is more remarkable in transition intervals than that of peak and flat intervals.
Keywords:	Travel Time Reliability, Bi-Level Program, Road Network Design, Relative Reliability
Source:	Journal of Theoretical and Applied Information Technology pp 308 - 314 Vol. 45. No. 1 -- 2012
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Title:	A RAPID CORN SORTING ALGORITHM BASED ON MACHINE VISION
Author:	JINGANG GAO, SHUANG ZHANG, YUZHUO MEN, HUA WANG
Abstract:	According to the defects of traditional contact corn measurement methods. Size measurement systems based on CCD image are introduced. It can provide a real-time, rapid, efficient and economic measurement approach. Firstly with CCD camera image automatic acquisition, then photographed image of threshold segmentation, namely binary processing. By Laplace operator again Gauss image edge detection and the calculation of regional labeling, mark area, using area feature parameters eliminate unwanted noise. Finally, according to the edge profile features, we can use the gravity method such as the establishment of corn length and diameter size calculation method, and compared with the size of the classification standard. Using actual collection to corn image experiment, the results show that the processing method is feasible, using a 1280 x 1024 pixel CCD camera, the cornfield sorting speed can reach 30ear/min.
Keywords:	CCD, Digital Image Processing, Edge Detection, Size Calculation
Source:	Journal of Theoretical and Applied Information Technology pp 315 - 319 Vol. 45. No. 1 -- 2012
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Title:	A SOLUTION TO DECISION MAKING UNDER UNCERTAINTY
Author:	XIAOGANG WU, RONGWEI DU
Abstract:	Decision-making under uncertainty is the problem with the least known conditions, and also the most difficult problem to find the optimal solution. A. Wald and his contemporary V. Nouma first associate the decision theory with the game theory in the way of regarding the statistical decision as the two-person zero-sum game processed by the statistician and nature. A. Wald proves that we should choose the so called Max-min strategy in decision making. Based on the analyses of A. Wald matrix game and five classical rules of uncertain decision-making, this paper agrees that the max-min criterion is the relative scientific solution, and puts forward the general method of solving uncertain decision-making.
Keywords:	Uncertain Decision-making, Decision Method, Matrix Game
Source:	Journal of Theoretical and Applied Information Technology pp 320 - 324 Vol. 45. No. 1 -- 2012
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Title:	A PREVENTION MODEL AGAINST SIP FLOODING ATTACKS
Author:	XUEHUA YANG, HONGBIN LI
Abstract:	Through deeply analyzing on the principle, mode, character of SIP DoS and the flooding attacks faced by SIP network, the prevention model to combine a dynamic threshold adjustment with real-time dynamic prevention for SIP flooding attacks was proposed. This model included logically chi-square traffic judgment model, cumulative statistics model and IP prevention model, among which chi-square traffic judgment module and cumulative statistics module were combined to dynamically adjust the threshold and detect SIP flooding attacks, and IP defense model dynamic prevented IP-based SIP flooding attacks. The experimental result shows that the model can effectively detect and prevent the SIP flooding attacks, and reduce the probability of SIP proxy server or IMS server been attacked when the SIP network is on the abnormity.
Keywords:	Session Initiation Protocol, Flooding Attacks, Chi-Square Traffic, Cumulative Statistics, Threshold Dynamic Adjustment
Source:	Journal of Theoretical and Applied Information Technology pp 325 -334 Vol. 45. No. 1 -- 2012
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Title:	SYNCHRONIZATION OF DISCRETE CHAOTIC SYSTEMS BASED ON UNCERTAINTY COMPENSATED BY LS-SVR
Author:	JINYING ZHANG, DONGFENG WANG
Abstract:	A chaotic system owns complex dynamics though it is with deterministic expression in mathematics, and it has attractive numerous study and application in many fields of the world. But for a concrete application, it is usually with parameters uncertainty while it is implemented. In this paper synchronization of discrete-time chaotic systems with parameters and/or structure uncertainty is researched, in which the uncertainty is modeled by using least square support vector regression (LS-SVR) to eliminate synchronization error. A novel synchronization control law that guarantees closed-loop robust stability is proposed. Synchronizing of the well-known Hénon chaotic system and Lozi chaotic system, Burgers’ map and Holmes cubic map, are taken as illustrative examples. The chaotic systems in both examples are uncertain in parameters and structure. Experimental results demonstrate the effectiveness and feasibility of the proposed synchronization method.
Keywords:	Chaotic Systems, Synchronization, Uncertainty, LS-SVR
Source:	Journal of Theoretical and Applied Information Technology pp 335 - 341 Vol. 45. No. 1 -- 2012
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Title:	AUTOMATIC DOCUMENT GENERATION STRATEGY FOR GRAPHIC-ORIENTED MODELING AND AUTOMATIC CODE GENERATION PLATFORM
Author:	CHUNMAO JIANG, XIANGHU WU, MINGCHENG QU, JUN YAO
Abstract:	With the growing of maturity for the graphical model-driven development environment, software development has been made out of the shackles of a lot of manual coding and not easily code reusing, meanwhile a higher document management standard is required in software development process. To meet this requirement this paper presents a structured Word document automatic generation technology which makes full use of XML Dom and VBA technologies, and takes XML data storage files as input. The paper elaborates tag defining rules of structured Word document template, and the algorithms of XML data nodes query, information extraction and replacement of Word document tags. The model has been applied in a practical engineering project, and effectively solves the problems of strenuousness, repetition, inefficiency and easily mistakes occurring as compiling structured Word documents only by hand.
Keywords:	Word, Automatic Generation, XML, VBA, Tag
Source:	Journal of Theoretical and Applied Information Technology pp 342 - 349 Vol. 45. No. 1 -- 2012
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Title:	TUBULAR SURFACES EXTRACTION WITH MINIMAL ACTION SURFACES
Author:	XIANGJUN GAO
Abstract:	This paper presents a new fast approach for surfaces extraction of tubular structures, such as blood vessels, tracheas, and colons. Since they are usually long and thin, when being extracted with the traditional Minimal Action Surface method, edges leakage problem could not be avoided. So a front freezing criterion based on the front's average energy is developed. To freeze the tail of the front whose energy is less than the average energy, and to continue propagating the head of the front whose energy is larger than the average energy. While the head front gets the end of the structure, the whole tubular structure surfaces are extracted. Experimental results show the freezing criterion based on the front's average energy avoids the edges leakage problem effectively. The criterion is based on the global information of the front, so can enhance the robustness to image noise and the local minimum.
Keywords:	Minimal Action Surface, Fast Marching Method, Tubular Structure Surfaces, Average Energy
Source:	Journal of Theoretical and Applied Information Technology pp 350 - 355 Vol. 45. No. 1 -- 2012
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Title:	NEURAL LEARNING ALGORITHM BASED MRAS ROTOR RESISTANCE ESTIMATOR USING REACTIVE POWER TECHNIQUE FOR VECTOR CONTROLLED INDUCTION MOTOR DRIVE
Author:	Ms.M.NANDHINI GAYATHRI, Dr.S.HIMAVATHI, Dr.R.SANKARAN
Abstract:	This paper presents a new method for estimating the rotor resistance of an induction motor. The rotor resistance changes significantly with temperature and frequency. This variation has a major influence on the field oriented control performance of an induction motor due to the deviation of slip frequency from the set value. In conventional MRAS, the adaptation is done using a PI-controller. The MRAS approach using reactive power as a functional candidate for rotor resistance estimation makes MRAS computationally simpler and easy to design. This paper proposes the role of neural learning algorithm for adaptation in a MRAS based rotor resistance estimator. The proposed scheme combines the advantages of reactive power technique and the capability of neural network to form a scheme named “Neural Learning-Reactive Power Model Reference (NL-RPMR) based rotor resistance estimator” for Induction Motor Drives. In the NL-RPMR scheme, the error between neural network model and reference model is back propagated to adjust the weights of the neural network of the estimator. The performance of NL-RPMR based rotor resistance estimator is extensively simulated and compared with the conventional MRAS method. The promising results obtained are presented.
Keywords:	Induction Motor, MRAS, Rotor Resistance Estimator, Neural Network, Back Propagation Algorithm, Reactive Power.
Source:	Journal of Theoretical and Applied Information Technology pp 356 - 364 Vol. 45. No. 1 -- 2012
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Title:	DATA INVESTIGATION: ISSUES OF DATA QUALITY AND IMPLEMENTING BASE ANALYSIS TECHNIQUE TO EVALUATE QUALITY OF DATA IN HETEROGENEOUS DATABASES
Author:	AZWA ABDUL AZIZ , MD YAZID MOHD SAMAN, JULAILY AIDA JUSOH
Abstract:	Data investigation is a process to understand the nature of data in heterogeneous databases. Many organizations are using online transactions systems to support their company operations. The diversity of applications system that used to support organization may lead to data anomalies without the system owners realized the negative impact of decision making from insufficient information of data. The quality of the results from any analysis is only as good as the quality of the inputs (the data) that feed that analysis. Therefore, data quality process is still a major factor in the successful operation of IT. An introducing of new tech systems such as grid systems, ETL applications, semantic web are meaningless if data are lack of quality. In avoiding “Garbage In Garbage Out” principle, we proposed a technique that help to understand a natured of data which we refer as Base Analysis Technique (BAT). BAT is used to profile heterogeneous data in a structured approach, with the intention to determine abnormal data. The technique contains three levels of analysis consists of Top Level Analysis, Middle Level Analysis and Low Level Analysis. On the other hand, Data Quality Analysis System (DQAS) is a tool that developed using open source technologies which is connected to commercial databases in supporting BAT to be implemented in three-tier architecture. This paper describes issues surrounding data quality area and how BAT evaluates the quality of data in heterogeneous databases.
Keywords:	Data Quality, Base Analysis Technique, Data Freshness
Source:	Journal of Theoretical and Applied Information Technology pp 365 - 377 Vol. 45. No. 1 -- 2012
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