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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
May 2013 | Vol. 51 No.2

Title:	OFF-LINE SIGNATURE VERIFICATION SYSTEM BASED ON DWT AND COMMON FEATURES EXTRACTION
Author:	HAZEM HIARY, RAJA ALOMARI, THAEER KOBBAEY, RADI Z. AL-KHATIB, (MOHAMMAD AIHAM) AL-ZU’BI, HASHEM HASAN
Abstract:	This paper presents an off-line signature verification system that aims at verifying Arabic and Persian signatures. Arabic and Persian signatures have commonality in shapes, fine and general details. Moreover, both have unique general features that distinguish them from other signatures. The proposed system is based on Discrete Wavelet Transform (DWT) to extract common features to aid the verification step. This system consists of four steps: preprocessing, signature registration, feature extraction, and signature verification. Results show that the proposed system achieved good verification measures with low false acceptance rate (FAR) of 1.56%, and low average error rate of 6.23%, and false rejection rate (FRR) of 10.9%. The proposed system proved to be beneficial when compared to other works.
Keywords:	Off-line Signature Verification, Arabic Signatures, Discrete Wavelet Transform (DWT)
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	A 3D MODEL ASYMMETRIC WATERMARKING ALGORITHM BASED ON OPTIMIZATION STATISTICS
Author:	XIUHU TAN
Abstract:	The popularity of 3D content is on the rise since it provides an immersive experience to viewers, which has motivated us to develop techniques for watermarking 3D models so that we can hide copyright information behind them. In this paper, a novel method suitable for 3D models asymmetric watermarking applications is proposed based on optimization statistics. Through choosing the vertexes, we are able to obtain to the embedded watermark that has the least modified to topology transform of the 3D geometry model, and then project the watermark to the space that has the least mean square error value. So, we obtain that the robustness of the approach lies in hiding a watermark in the space that is least susceptible to the 3D model potential modification. Through analysis and constraint the conditions, we can obtain a high detection probability, a low false alarm probability. The robustness of our method is demonstrated by various attacks through computer simulation.
Keywords:	3D model watermarking, Asymmetry, Optimization statistics, Robustness, Security
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	PERFORMANCE ANALYSIS OF TWO-WAY MULTI-USER WITH BALANCE TRANSMITTED POWER OF RELAY IN LTE-A CELLULAR NETWORKS
Author:	JAAFAR A. ALDHAIBAINI, A.YAHYA, R.B.AHMAD, A.S. MD ZAIN, M.K.SALMAN
Abstract:	Wireless multi-hop relay systems have become very important technologies in mobile communications. These systems ensure high-speed data transfer and extended coverage area at a low cost. In this paper, we proposed two scenarios. In the first scenario we studied the performance of a two-way multi-hop relay network and proposed a half-duplex mode amplify-and-forward relay with two cases. In the first case, we studied a fixed relay node (FRN) with (qth) users for two-way performance keeping user equipment (UE) is fixed and is moving at different velocities toward FRN. In second case, we proposed a new connection between the (kth ) moving relay nodes (MRN) and users had the same the velocities and times, in which users are independently moving between them. In the second scenario the balanced power algorithm for MRN is proposed, this algorithm is control of the transmitted power over cell radius to achieve the required SNR and throughput at the users with reducing the consumption transmitted relay power. Is has been shown from the simulation results that there is saving nearly 75% from transmitted power after using proposed algorithm.
Keywords:	AF relay, LTE-A, half-duplex, velocity
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	AERO-ENGINE VARIABLE STRUCTURE GLOBAL FAST TERMINAL SLIDING MODE CONTROL METHOD
Author:	LI YONG, FAN DING
Abstract:	One new kind of aero-engine control method based on the variable structure global fast terminal sliding mode control is proposed for the varying uncertainty nonlinear system of aero-engine. The aero-engine global fast terminal sliding mode variable structure controller has been designed by the in-depth study of VSTSMC theory.The simulation results show that the designed controller has good control effect and strong suppression of external interference, so that the controlled system has strong robustness in the entire control stage.
Keywords:	Global Fast Terminal Sliding Mode, Aero-engine, Variable Structure Control
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	AN IMPROVED TECHNIQUE OF COLOR HISTOGRAM IN IMAGE CLUSTERING USING IMAGE MATTING
Author:	CATUR SUPRIYANTO, RURI SUKO BASUKI, GURUH FAJAR SHIDIK, RICARDUS ANGGI PRAMUNENDAR, ABDUL SYUKUR
Abstract:	Image clustering is one of the applications of content based image retrieval. The purpose of image clustering is to group the object inside the images into different cluster. Using all color of images lead to reduce the accuracy of image clustering. Therefore, this research focuses on the color of the foreground in an image. Image matting has been proposed to subtract between foreground and background of an image. Then, the color histogram of foreground object was used as the feature in image clustering. By applying image matting, the accuracy of image clustering can be improved.
Keywords:	Content Based Image Retrieval, Image Clustering, Image Matting, Singular Value Decomposition
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	E-LEARNING EVALUATION IN MALAYSIAN PUBLIC SECTOR FROM THE PEDAGOGICAL PERSPECTIVE: TOWARDS E-LEARNING EFFECTIVENESS
Author:	YUSMINAR YUNUS, JUHANA SALIM
Abstract:	E-learning has emerged as an attractive alternative for the delivery of teaching and learning/ training. Nevertheless, most e-learning focused more on technical issues whereby the pedagogical perspective is not given much emphasis. The lack of emphasis on pedagogical perspective will affect the quality and effectiveness of e-learning. The purpose of this paper is to evaluate the effectiveness of e-learning in the public sector from the pedagogical perspectives and to identify the evaluation criteria which contribute to the effectiveness of e-learning. This paper attempts to develop a model for evaluating e-learning in the public sector. Mixed methods was chosen as the data collection technique. Quantitative data was gathered from the questionnaires, whereas qualitative data was gathered from interviews and case study. The overall findings showed that e-Training is effective from pedagogical perspectives, whereas EPSA is moderately effective. The results also showed that eleven evaluation criteria contributes to e-learning effectiveness namely individual motivation & attitude, individual learning style, theory-objective-learning outcome & knowledge transfer, interactivity & content, structure design, interface design, multimedia design, instruction and help, learner-facilitator interaction, learner-learner interaction, and learner-content interaction. An ‘E-learning Evaluation Model’ was also developed which comprised of 4 dimensions namely individual, learning, content and interaction.
Keywords:	E-Learning, E-Learning Evaluation, E-Learning Effectiveness, Pedagogical Perspective
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	OUTDOOR WDM-BASED OPTICAL WIRELESS COMMUNICATION
Author:	ALI SHAHIDINEJAD, SAEED SOLTANMOHAMMADI, TONI ANWAR
Abstract:	In the past two decades, wireless communications has attracted vast popularity in which Radio Frequency (RF) and Optical Wireless (OW) have been applied for transferring data. OW has the potential to be an alternative to RF and fiber optic communication systems. WDM technique can be easily integrated with outdoor OWC systems and it can significantly increase the bitrate in OWC systems. This paper describes reviews of the current state of the art WDM-based OWC systems. Then, challenges of WDM-based OWC are clustered. This paper proposes solitonic WDM-based OWC using microring resonators to compensate the WDM-based OWC problems.
Keywords:	Optical wireless communication (OWC), Microring resonator (MRR), wavelength division multiplexing (WDM), Soliton.
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	A STUDY ON VIDEO RATE WEIGHTED ESTIMATION CONTROL ALGORITHM
Author:	ZHONG XIAN, HAN KAIHONG
Abstract:	In order to make up for the deficiency of the MAD prediction scheme of G012 rate control algorithm, we propose a weighted budget method based on image luminance difference. To improve the BU(basic unit) rate control, we put forward a method to distribute coding bits based on PSNR(peak signal to noise ratio). The experimental results show that, compared with G012 algorithm using the new algorithm should get better video quality. At the same time, when encoding rate control for video sequences of faster scenes changes by using our algorithm, the advantages are particularly prominent.
Keywords:	H.264, BU Rate Control, MAD, Brightness Gradient, Weighted Estimation
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	TOWARDS NEW ESTIMATING INCREMENTAL DIMENSIONAL ALGORITHM (EIDA)
Author:	S. ADAEKALAVAN , DR. C. CHANDRASEKAR
Abstract:	Hierarchical clustering is the grouping of objects of interest according to their similarity into a hierarchy, with different levels reflecting the degree of inter-object resemblance. It is an important area in data analysis and pattern recognition. In this paper, the scholar proposes a new approach for robust hierarchical clustering based on the distance function between each data object and the cluster centers. This method avoids the need to compute the distance of each data object to the cluster center. It saves running time. The experimental results showed that the best clusters were obtained using EIDA method, this suggests that this similarity measure would be applicable to biological data sets.
Keywords:	Data Mining, Clustering Analysis, Agglomerative Clustering, Hierarchical Clustering Algorithm
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	LOAD CURRENT CONTROL BASED ON LUENBERGER OBSERVER FOR THREE PHASE POWER CONVERTER SVPWM
Author:	HARI SUTIKSNO, MOCHAMAD ASHARI, MAURIDHI HERY PURNOMO
Abstract:	This paper presents Load Current Control based on Luenberger Observer for Three-Phase Power Converter SVPWM with current regulation. The use of observer is intended to replace the use of dc current sensor, so it eliminates the nonlinearity problem and drop voltage caused the sensor. This research develops a controller to improve the time response of the dc output voltage of the three-phase power converter based on load current estimation. The simulation results show that overshoot the output voltage on load change from full load to 50% full load is about 3% with settling time 0.03 sec.
Keywords:	Observer, Power converter, Current Regulator, Space Vector, Pulse Width Modulation
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	SVM BASED ROAD SURFACE DETECTION TO IMPROVE PERFORMANCE OF ABS
Author:	T.ANBALAGAN, C.GOWRISHANKAR, Dr.A.SHANMUGAM
Abstract:	Advance information about the road surface a vehicle is going to encounter can improve the performance of Antilock Braking System (ABS). For e.g. the initial slip cycles caused by the ABS could be avoided, if it is already known that the vehicle is on a surface having a low coefficient of friction (µ). In this paper, an algorithm is developed that detects different road surfaces using streaming video acquired from a camera mounted on the hood of the vehicle. The road surfaces detected here are asphalt road, cement road, sandy road, rough asphalt road (asphalt road which is deteriorating), grassy road and rough road. The value of coefficient of friction (µ) is also given out with the detected surfaces to obtain additional information about the road surfaces. Split µ (a road having different µ conditions on the left and right side of the vehicle) and µ jump (different µ conditions on the front and rear of the vehicle) are also pre detected. One method was not sufficient to achieve the goals of this algorithm. Here several simple techniques like the Canny edge algorithm, intensity histogram, contours, Hough transform and image segmentation were employed and compared with the Support Vector Machine (SVM). To prevent misdetections, the road surface detection during high motion blur is prohibited.
Keywords:	Computer vision; Vehicle dynamics; Vehicle safety system; Signal processing; Automotive systems; Electronics in industry and transport
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	SIMULATION ANALYSIS OF STATIC VAR COMPENSATOR BASED ON THE MATLAB/SIMLINK
Author:	YANZHOU SUN, LINLIN WEI
Abstract:	As a new kind of measure to control voltage, Static Var Compensator can rapidly, accurately and continuously adjust voltage of installation area. So it can be better sustain voltage level of installation area, improve transient stability and reduce the oscillation damping in power system. In order to study the characteristics of Static Var Compensator, this paper constructed a kind of Static Var Compensator system that includes Thyristor Switched Capacitor and Thyristor Controlled Reactor sections though Simulink toolbox of MATLAB. Then the model is used for simulation experiment. By setting the relevant parameter, this paper studied the characteristics of Static Var Compensation in power grid. The simulation results show that Static Var Compensation has a good effect in maintaining bus voltage when the power grid is in a dynamic and steady moment, and it also have a ability of the stability control. It can completely work as an important devices of reactive power compensation in power network.
Keywords:	Static Var Compensation，Simulation，Thyristor Switched Capacitor， Thyristor Controlled Reactor
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	SLIDING MODEL VARIABLE STRUCTURE CONTROL FOR MICRO-GRAVITY ENVIRONMENT GROUND SIMULATION TEST SYSTEM
Author:	ZHANG WENHUI, JI XIAOMING
Abstract:	A novel spatial microgravity simulation system is proposed for big and middle experimental objects with complex movement. The equipments combine machine transmission、motor drive and air-bearing to realize three-dimension spatial microgravity simulation. Level pane adopts air suspending, upright adopts motor drive, by reducer，ball screw and guide pole. Force feedback control aim gravity real timely as controller. Friction non-linearity of machine system and outside disturbance are considered. Variable Structure controller is employed to reduce disturbance and uncertainty. The experimental result shows that test equipment has light weight, convenience using and higher precision, and compensates non-linearity infection for grasping of robotic manipulator, has important engineering value to three-dimension spatial microgravity simulation.
Keywords:	Variable Structure Control (VSC), Microgravity Environment Simulation (MES), Ground Test System (GTS)
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	CORRECTION, DENOISING AND SEGMENTATION OF MRI IMAGES VIA LEVELS SET METHOD
Author:	SAMIR BARA, SARA SANDABADE, MOUNIR AIT KERROUM, AHMED HAMMOUCH, DRISS ABOUTAJDINE
Abstract:	The revolution of digital imaging has led to an explosion in the information produced. In particular, the potential of MRI and its numerous acquisition sequences that explore various additional features of the brain. To cope with this mass of information generated, the automatic interpretation of MRI brain has become a major issue. Hence the importance of the view that segmentation is crucial link in image processing.In this paper we propose a method of correction, denoising and segmentation of MRI images, This problem can be solved by a coupled system of linear and nonlinear diffusion-reaction equations. These equations are proposed and tested for the denoising of magnetic resonance images, in order to be applied for the segmentation of medical images MRI.
Keywords:	Active Contours, Level-Sets, Segmentation, Variational Method, Medical Images MRI, Denoising; Medical Image
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	EFFICIENT HIGH PERFORMANCE MODIFIED STRAIGHT LINE ROUTING FOR WIRELESS SENSOR NETWORKS
Author:	Dr.R.KANTHAVEL, R.DHAYA, S.VIMAL
Abstract:	The advancements in communication and embedded technology have created more chances to design energy-efficient wireless network. On the other hand, Wireless Sensor Network plays an important role in surveillance applications includes military applications such as battlefield surveillance, industrial and consumer applications, process monitoring and control, machine health monitoring, and so on. In that the sensor nodes have to be reliable and to be more specific, the protocols should be energy efficient through the best routing with the knowledge of the neighbor nodes in the sensor network. Since in surveillance environment, where all nodes must be easily contacted with each other at any cost without delayed time, large over head and packet loss due to minimum available energy. In this paper, an energy efficient protocol named High Power Energy Aware Routing (HPEAR) has been proposed to increase the life time of the WSN in the congestive environment. The performance of the proposed protocol has also been compared with the existing routing protocols. The simulation results show that the proposed HPEAR is efficiently adapting routes to the nodes with the available power to make the network in to an intelligent one without compromising the Quality of Service.
Keywords:	Wireless Sensor Networks (WSN), High Power Energy Aware Routing protocol (HPEAR), Base station(BS)
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	VIBRATION CONTROL OF PIEZOELECTRIC FLEXIBLE STRUCTURE USING ROBUST CONTROL METHODOLOGY
Author:	JUNFENG HU, GUIYANG XU
Abstract:	Active vibration control of a smart flexible cantilever beam was studied by using mode theory and μ synthesis method. The actuator is piezoceramic patch, the sensor is strain gauge. The finite element method and experimental modal test was applied to obtain the dynamic model of the smart structure. Taking account into uncertainty of the external disturbance and measurement noise, and uncertainty of natural frequency, damping ratio and actuator parameters of the system, μ synthesis approach was applied to design the vibration controller by selecting mode displacement as evaluation signal and selecting appropriate weighting function according to amplitude and frequency characteristics of the actual signal. A controller with same weightings was also designed and implemented for comparison analysis. The performances of the controller are verified experimentally in this study. Experimental results showed that -controller can provide good disturbance rejection and is more robust to parameter variations than controller. And the proposed controllers can effectively suppress the vibration response of the flexible beam.
Keywords:	Smart Structure, Active Vibration Control, Finite Element Method, Synthesis, Experimental Modal Test
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	A KIND OF ROUTING MODEL IN PEER-TO-PEER NETWORK BASED ON SUCCESSFUL ACCESSING RATE
Author:	TAO LIU, JI-JUN XU
Abstract:	The peer-to-peer network is based on location mechanism of distributed objects, which is conducive to sharing of resources among users. The commonly using overlay network topology method based on interesting group in the existing peer-to-peer network should be accomplished collaboratively by users, which increases system traffic and occupies large bandwidth. The paper brought out a kind of routing model in peer-to-peer network based on Successful Accessing Rate (SAR). The model organizes user group based on SAR and conducting resource searching in the high-low order of SAR. In the model, each node runs independently, which decrease system maintenance cost and provides new idea to solve free-rider problem. Simulation results show that the model effectively improve recall rate of system and also solve fairness problem.
Keywords:	Peer-To-Peer Network, Routing; Successful Accessing Rate
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	INTEGRITY OF DIGITALLY SIGNED MESSAGES USING JOINT SIGNATURE SCHEME
Author:	SANIA HABIB, DR. MALIK SIKANDAR HAYAT KHIYAL, MUKHTIAR BANO AND, AIHAB KHAN
Abstract:	In this era of advanced technology, mobile commerce is going to become popular due to rapid development of technology but this technology needs a lot of struggle for maintaining secure communication and protection from threats. In this research, a mechanism for secure and authentic communication in mobile commerce based on joint signature scheme is presented. This technique ensures the integrity of digitally signed messages using joint signature scheme which show that the message which is sent by the message sender have not been altered by any unauthorized person by digitally signing the message. This technique is efficient in mobile domain because it is less computative and easily used with limited resources in mobile commerce. Joint signature scheme is based on hash functions and encryption/decryption technique to produce joint signature with the help of message sender and trusted third party and also to authenticate the message for the message sender and the message receiver. This technique overcomes the drawbacks of traditional digital scheme, such as computation/communication load, complexity, public key operations etc.
Keywords:	M-Commerce, Joint Signature, Encryption, Cryptographic Hash Function, Password; Salt value, Message Integrity
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	MULTI-OBJECTIVE GENETIC PROGRAMMING TECHNIQES FOR MULTI-CLASSIFICTION
Author:	KHALED M. KRIDAN, ALAA ROHIM, KHALED BADRAN
Abstract:	In this paper, a generic, multi- classification with multi-objective genetic programming method is proposed to design an optimal feature extraction phase followed by a simple threshold classifier. This is implemented by projecting the pattern space into a decision space in which the discriminability between classes is maximized. Three multi-classification decomposition techniques (One-from-n, Hierarchical, Single feature space mapping SFSM) are applied to real world five datasets from the UCI Machine Learning database have been used to verify our approach. These methods are primarily focused on multi-classes feature extraction.
Keywords:	Genetic Programming(GP), Feature Extraction, Multi Classification
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	TEACHING EXPLORATION ON INTERNET TEACHING OF PHYSICAL EDUCATION BASED ON BLACKBOARD ACADEMI SUIT
Author:	JILIN YIN
Abstract:	Taking the track and field teaching as a case, the author carried out an applicative exploration on network teaching by using methods of experiment, questionnaire and documentation. The results show that the technical evaluation and technical standards of both group were better than before, in technical evaluation, the experimental group are superior to the control group, the boys have significant difference, the girls were very significant; in technical standards, the experimental group was lower than the control group, no significant difference; the theoretical examination results of experimental class was significantly better than the control class, the difference was very significant; the students’ attitude of the implementation of track and field network teaching mode is approval. The track and field course network teaching must follow the principles of" complement each other, complementary advantages"," enhancing effect, increasing quality and promoting development" to promote the reform of teaching mode and improve teaching quality.
Keywords:	Blackboard Academic Suit(BAS); Internet Teaching（IT）; Physical Education（PE）; Experimental Exploration（EE）
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	TOWARD A CONCEPTUAL BASE FOR PROTOCOL ENGINEERING
Author:	SABAH AL-FEDAGHI, ALAA AL-SAQA
Abstract:	A protocol refers to a set of rules governing the exchange of data between entities. Several notations are utilized in the specification of protocols, including different types of diagrams such as flowchart-like depictions, UML sequence diagrams, and state transition diagrams. This paper is a contribution to this area, proposing a diagrammatic methodology for protocol specification. It is based on the notion of flow of “primitive” things in a system with six stages: creation, release, transfer, arrival, acceptance, and processing. The aim is to introduce a conceptual and complete description of basic streams of flow among entities and stages including “crossing points” that need rules of data transfer. The resultant specification is a map over which a protocol can be superimposed.
Keywords:	Protocol, Network, Conceptual model, Communication, Rules
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	FUZZY COORDINATOR BASED INTELLIGENT AGENTS FOR TEAM COORDINATION BEHAVIOR IN CLOSE COMBAT GAMES
Author:	SUPENO MARDI SUSIKI NUGROHO, IKA WIDIASTUTI, MOCHAMAD HARIADI, MAURIDHI HERY PURNOMO
Abstract:	Nowadays, many commercial computer games on the market have employed some AI techniques especially on the behaviors of NPCs (Non-Playable Characters). The aim is to make the NPCs game more human-like, immersive or natural. In a close combat game, creating strong AI forces require team coordination of NPCs. By employing an AI based agent (i.e. intelligent agent) for team coordination of NPCs leads to a deeper sense of immersion since NPCs are allowed to work together to produce better tactics and strategies. This technique faces many challenges since the intelligent agents are based on state transitions. The state transition leads to the decision for selecting the appropriate behavior by itself. Therefore, sometimes the selection could be failed to accomplish a team objective. This is due to weak coordination between NPCs and the intelligent agent. This paper describes the Fuzzy coordinator method to support the intelligent agent for selecting suitable behavior for each NPC. The intelligent agent who becomes the team leader will monitor and analyze health of each NPC, which one is strong and weak, which one has to back off or stays in the battle. The experimental result demonstrates that by employing the above technique, NPC behavior selection lead to appropriate coordination from leader which represented by keeping the health parameter 75 % and 50 % at maximum and minimum respectively
Keywords:	NPCs (Non-Playable Characters), Intelligent Agent, Intelligent behavior, Close Combat Game, Fuzzy Coordinator
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	A DECISION-THEORETIC INTELLIGENT AGENT MODEL
Author:	YONGHUI CAO
Abstract:	Several methods are employed in multi-agent learning and organization problem such as temporal difference (TD(λ)), genetic algorithms, and learning classifier systems. The main disadvantage of these methods is that they perform badly when the data is not fully observable. In this paper, we first introduce explain learning systems in artificial intelligence(AI) and Self-organization systems. Then, we study the structure of self-organization of the intelligent agents, Finally, we design the decision-theoretic intelligent agent system, feedback control and adaptive control.
Keywords:	Artificial Intelligence; Self-organization System, Decision-theoretic Intelligent, Feedback Control, Adaptive Control
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	IMPROVED ALGORITHM FGF-LRU FOR I/O PERFORMANCE OF LUSTRE
Author:	LI LINLIN, SUN LIANGXU
Abstract:	In Lustre parallel file system the I/O performance of coarse-grained data access is good, while the I/O performance of fine-grained data access is relatively worse. Therefore optimizing the I/O performance of fine-grained access is the key for the improvement of the system's overall I/O performance. This study analyzed Lustre's I/O access mode, fine-grained I/O service procedure and page reclaim algorithm, and proposed a Fine-Grained First LRU (FGF-LRU) algorithm. In this algorithm, fine-grained I/O pages are retained in cache of OST and client as long as possible, to slow down the pages' sinking, and extend the time that the pages are in main memory, and thereby, decrease the number of times of disk access and reduce the disk access cost. Through comparison and analysis of the test data, the algorithm is confirmed effective; I/O performance of fine-grained access is improved without affecting the coarse-grained I/O performance, and the system overall I/O performance is improved.
Keywords:	Parallel file system, Lustre, Fine-grained, I/O
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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Title:	A METHOD OF SYNTHETIC SCHEDULING BASING ON THE CLOUD COMPUTING
Author:	ZHAO HONGWEI
Abstract:	The traditional Scheduling method in the Cloud Computing system can only provide load distribution for resource Scheduling. In order to improve the utilization ratio of the resource as well as handling up rate of the Cloud Computing system, a method of Synthetic Scheduling basing on the Cloud Computing has been designed and implemented after the study on the Cloud Computing system. It can provide a better method to solve the problem of scheduling in the Cloud Computing system .Firstly, a layered loading balancing scheduling mode has been proposed. Secondly, a comprehensive resource distribution algorithm has been designed and implemented in consideration of respective local resource counts, each join points’ performance and current load distribution. Finally, the result of the experiment indicates that the scheduling system can improve the efficiency of dispatching resource and the utilization ratio of distributed Cloud Computing resource.
Keywords:	Distribution; Cloud Computing; Load; Load balance
Source:	Journal of Theoretical and Applied Information Technology May 2013 -- Vol. 51. No. 2 -- 2013
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