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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
June 2013 | Vol. 53 No.1

Title:	THE THROUGHPUT FOR MULTI-HOP RELAY WIRELESS SENSOR NETWORKS BASED ON COOPERATIVE DIVERSITY
Author:	YU GENJIAN, WENG KUNPENG
Abstract:	This paper studied the problem of the throughput of multi-hop multi-relay wireless sensor networks based on the cooperative diversity technology. At first, the paper established the cooperative diversity model for multi-source, multi-sink and multi-relay sensor networks, on which the specific expression of throughput of wireless sensor networks was deduced, it not only prove that the throughput performance of multi-hop multi-relay wireless sensor networks would be increased by the cooperative diversity technology, but also gave the criterion for discussing further the application effect of the technical scheme such as the cooperative selection strategy and so on in actual multi-hop multi-relay wireless sensor networks. In the other hand, the paper theoretically proved that cooperative diversity could improve the throughput of multi-hop multi-relay wireless sensor networks.
Keywords:	Wireless Sensor Networks, Diversity Cooperative Technology, Throughput Capacity, Multi-Hop, Multi-Relay
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	ARCHITECTURE OF MALWARE TRACKER VISUALIZATION FOR MALWARE ANALYSIS
Author:	CHAN LEE YEE, MAHAMOD ISMAIL, NASHARUDDIN ZAINAL, LEE LING CHUAN
Abstract:	Malware is a man-made malicious code designed for computer destructive purposes. The early destructive programs were developed either for pranks or experimental purposes. However, in this day and age, malware are created mainly for financial gain. Since years ago, the use of malware attack tools, such as keylogger, screen capture software, and trojan were rapidly used to commit cybercrimes. The figures are expected to increase significantly and the attack tools are becoming more sophisticated in order to evade the detection of current security tools. The malware debugger analysis process is an essential part of analyzing and comprehending the purpose and the destructive part of the malware. It is an exhausting and time consuming task; moreover, in-depth computer knowledge is required. With the popularity and variety of malware attacks over the Internet, the number of virus needed to be analyzed by computer security experts are rapidly increasing and has bottlenecked the effectiveness of the analysis process. In this paper, we present a method to visually explore the reverse engineering of a binary executable flow over time to aid in the identification and detection of malicious program on x86-32 platform. We first achieve the pre-execution analysis for a sketch of a program’s behavior by combining static analysis and graphical visualization to construct a control flow graph (CFG) as an interface for the analyzed code. Each node in the CFG graph which represents a basic block allows analysts to be selective in the components they monitor. All nodes in the CFG express the complex relationships and causalities of the analyzed code. As the binary executes, those codes that are dynamically generated will be monitored and captured; thus, a fuller understanding of the execution’s behavior will be provided. The backward track approach which allows analysts to restudy the changes of the executed instructions’ memory during dynamic analysis provides a chance for analysts to restudy the execution behavior of the executed instructions. The overall architecture of the visualization debugger, both statically and dynamically will be explained in this paper. To the end of the paper, we analyze a malware test case; W32/NGVCK.dr.gen virus with our malware tracker visualization toolkit and the analysis results proves that our visualization malware tracker tool can simplify the analysis process by displaying the analyzed code in basic block approach. This work is a substantial step towards providing high-quality tool support for effective and efficient visualization malware analysis.
Keywords:	Malware Visualization Debugger, Static Analysis, Dynamic Analysis, Malware Analysis
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	A NARRATIVE REVIEW OF RESEARCH ON LEARNING STYLES AND COGNITIVE STRATEGIES
Author:	BALASUBRAMANIAN VELUSAMY, MARGRET ANOUNCIA S
Abstract:	The aim of this article is to analyze the existing e-learning environment and to detect the different learning styles of an individual. In general, the e-learning system provides assistance to the learner’s in terms of providing learning contents that spans from textual information to multimedia information. Though the existing system tries to maximize the aptitude of learning in users, it fails to act in a dynamic way. To bring the dynamic nature into the system, the learning behavior of an individual has to be modeled. In order to expedite the process, it is necessary to automate the process of detecting learning style based on the learning behavior. This paper attempts to uncover the specialties of the existing e-learning learning style models and cognitive strategies towards understanding and proposing the learning style for the learners based on the popular Felder Silverman Learning Style Model (FSLSM) learning input and dimensions.
Keywords:	E-Learning, Learning Style, cognitive, FSLSM, Learning dimension and Learning behavior
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	PERFORMANCE INVESTIGATION OF WIMAX 802.16M IN MOBILE HIGH ALTITUDE PLATFORMS
Author:	MARWA IBRAHIM, M.M. ZAHARA, SAMEH NOAMAN, RAGAB AL SAGHIER
Abstract:	Providing WiMax broadband services via high altitude platforms (HAPs) is still an open research issue. One of the major problems affecting the system performance on the link level is Doppler Effect caused by the mobility of the served users. This paper investigates the Doppler effects on the bit error rate of mobile users in the downlink of the WiMax802.16m standard. The system key parameters that affect the error bit rate performance are also studied. These parameters include the channel propagation model. The Bit Error Probability (BEP) is the performance metric used to evaluate the downlink performance. Numerical results provided through simulations show that providing WiMax through high altitude platforms enhances the BER performance over that expected from conventional terrestrial systems.
Keywords:	WiMax; HAPs; Doppler effect; IEEE802.16m; mobility
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	A METHOD FOR AUTOMATIC DETECTION OF THE RUNNING RED LIGHT BY USING OPTICAL FLOW MIXED FRAMES SUBTRACTION
Author:	JIANGFAN FENG, WENWEN ZHOU
Abstract:	Running red lights (RRL) currently become a hotspot social issue. Although it is commonly mentioned to detect and warn by using traffic monitoring, this idea has still remain in human recognition. Therefore, this paper designs a method to remedy it, which can detect the behavior of the pedestrians crossing the road automatically. From the sequential images taken by traffic monitoring, the use of optical flow estimating the track of motion objects whether cross the designated area enables automatic identification, then we carry out frames subtraction to isolate and identify the pedestrians from the moving objects. Combine the advantage of both algorithms, a system is presented to recognize the RRL event. Ultimately, the experiment confirms and indicates that what we proposed works effectively in some way.
Keywords:	Optical Flows, Frame Subtraction, Target Tracking, Event Detection, Algorithms
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	ACTIVE CHOICE IS TENDENCY OF PLAYERS: CASE STUDIES OF MOTIVATION CLASSIFICATION IN THE MOTIVATION BEHAVIOR GAMES
Author:	MOH. ARIES SYUFAGI, SITI MUSLICHAH HARINI, MOCHAMAD HARIADI, MAURIDHI HERY PURNOMO
Abstract:	To assess the motivation level of player interest is difficult; many instruments are potentially biased, unreliable and invalid test. Whereas, in serious game is important to know the motivation level. If the motivation level can be measured well, the mastery learning can be achieved. Mastery learning is the core of the learning process in serious game. To classify the motivation level of players, researchers propose a Motivation Behavior Game (MBG). MBG improves this motivation concept to monitor how players interact with the game. This game employs Learning Vector Quantization (LVQ) for optimizing the motivation behavior input classification of the player. Training data in LVQ use data observation from the teacher. Populations of motivation behavior classification in this research are pupils when playing the game. Mostly players Motivation Behavior Game have motivation behavior category are Active Choice. Some of them have Mental Effort category, and a few included in the group Persistence. Thus, the general level of interest of the player is still to trial.
Keywords:	Active Choice, Motivation Classification, Learning Vector Quantization (LVQ), Motivation Behavior Game (MBG)
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	GENERALIZED P-ARY SEQUENCES WITH TWO-LEVEL AUTOCORRELATION
Author:	XINJIAO CHEN, HUANGUO ZHANG
Abstract:	In this paper, we find a family of -ary sequences with ideal two-level autocorrelation with symbols in the finite field . The proposed family may be considered as a generalization of the well-known nonbinary sequences introduced by Helleseth and Gong. Using the constructed sequences and -sequences, we present a family of -ary sequences of which the correlation property is optimal in terms of the Welch lower bound.
Keywords:	Communication Systems, Pseudorandom Sequences, Correlation, Ideal Two-Level Autocorrelation
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	SERVICE RESPONSE WITH OPTIMAL QOS IN SERVICE CLUSTER SCHEMA
Author:	QIANG HU, YUYUE DU
Abstract:	The large amount of Web services in internet brings more opportunities for the users, however, it also increases the difficulty to search and find an appropriate Web service for a service request since there are too many similar Web services. To reduce the search space and increase the flexibility of service response, a group of Web services with similar functions are mapped as a service cluster in this paper. A service request and response schema based on service cluster is proposed. The service request from a user is responded by a Web service or a service flow. The service architecture oriented on service clusters is presented and tow algorithms are designed to bind an appropriate Web service or a service flow with the optimal Qos under the service cluster schema. Simulation results show that efficiency is greatly increased in discovering services under service clusters schema, and the rediscovery time is also greatly decreased once the current working Web service is unavailable
Keywords:	Web service, Quality of Service (QoS), Service Cluster, Flexibility, Service flow
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	DECOUPLING CONTROL FOR THREE DEGREES OF FREEDOM SERVO SYSTEM BASED ON NEURAL NETWORK
Author:	XIAOFEN JIA, BAITING ZHAO
Abstract:	Three degrees of freedom servo system(TDFSS) is one of the key equipments of inertial testing, such as evaluation of inertial navigation system and test of inertial components. It is a kind of servo system with some non-linearity and uncertainty. This thesis takes advantage of the characteristic of Neural network in approaching non-linear function, applies the Neural network on the three-axis simulator, provides a method for the TDFSS. Simulating experiment has been used to verify the advantage of the scheme and achieved completely decoupling control. The scheme gives good control precision, and it is simply structured and easily implemented.
Keywords:	Three Degrees Of Freedom(TDF); Servo System(SS); Neural Network(NN); Decoupling Control(DC)
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	PERFORMANCE ANALYSIS OF DS-CDMA SYSTEM OVER AWGN AND FADING CHANNELS BASED ON DIVERSITY SCHEME
Author:	ARUNARASI JAYARAMAN, INDUMATHI PUSHPAM
Abstract:	This paper investigates, a technique which uses antenna diversity to achieve full transmit diversity using an arbitrary number of transmit antennas for secure communications and to improve the system performance by mitigating interference. The work is focused on the performance of DS-CDMA systems over Rayleigh, Rician and AWGN fading channel, in the case of the channel being known at the receiver .The diversity scheme used in the analysis is Alamouti STBC scheme. Using simulation and analytical approach, we show that STBC CDMA system has increased performance in cellular networks We also compare the performance of this system with the typical DS-CDMA system and show that STBC and multiple transmit antennas for DS- CDMA system provide performance gain without any need of extra processing . Evaluation and comparison of the performances of DS-CDMA system in the AWGN (Additive White Gaussian Noise) channel, Rician fading channel and the Rayleigh fading channel are provided.
Keywords:	Additive White Gaussian Noise, DS-CDMA, Rician distribution, Space time block codes (STBC)
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	AN EXTENSIVE DATA CACHING FRAMEWORK APPROACH FOR ENTERPRISE APPLICATION
Author:	NILAYAM KUMAR KAMILA, PRASHANTA KUMAR PATRA
Abstract:	There are a number of approaches, which have been developed and are still in process of development, to regulate and frame the data transfer to/from the servers or storage base. The developers are still facing number of difficulties in terms of time required in fetching or storing the data in remotely located servers during the development (coding and unit test) phase. The remotely located server could not be replicated or placed in local area network due to high security concerns and unavailability of proper infrastructures. We are presenting a new framework approach which can be utilized to cache the remote data and hence the development process could be made faster than the usual traditional development process.
Keywords:	Caching, Data Caching, Caching Framework, Development through Caching
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	NEW STABILITY CONDITIONS FOR NEUTRAL SYSTEMS WITH DISTRIBUTED DELAYS
Author:	XINGHUA LIU, HONGSHENG XI
Abstract:	The certain and uncertain neutral systems with distributed delays are investigated in this paper. The uncertainties under consideration are time-varying, but norm bounded. By the delay-dividing approach, firstly new asymptotic stability conditions for the certain neutral systems with distributed delays are given by Lyapunov method. Then the asymptotic stability conditions for the uncertain case are obtained subsequently. Numerical examples illustrate that the proposed criteria are effective and lead to less conservative results than existing ones.
Keywords:	Neutral Systems, Robust Stability, Distributed Delays, Asymptotic Stability
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	BALANCING PROCESS TO THE CIPHERING SYSTEM SEC
Author:	ZAKARIA KADDOURI, FOUZIA OMARY, ABDOLLAH ABOUCHOUAR, MOHSSIN DAARI
Abstract:	In this article, we present a new symmetrical encryption system based on symmetric encryption SEC, it formalizes the problem of encryption to a combinatorial optimization problem and uses evolutionary algorithms to solve it. The main objective of this work is to strengthen the resistance of the encryption system “SEC” against cryptanalysis by the characters frequencies study. The Balancing process (BP) is introduced to change the appearance frequencies of characters, and to reach equilibrium. Through the key generated by our algorithm, we illustrate the process of encryption and decryption. Examples of applications will be given at the end of this article, the results show that our new system is robust and resists to any attack by frequency analysis.
Keywords:	Symmetric Encryption, Evolutionary Algorithms, Combinatorial Optimization, SEC, Frequency Analysis.
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	PARTIAL DEPENDENT GRAPHICAL MODELS FOR UNDIRECTED RELATIONSHIPS INVOLVING PASSIVE STATES
Author:	DONGYU SHI
Abstract:	As a core framework in artificial intelligence, standard graphical models generally assume that every state of a variable node has effect on other nodes by propagating beliefs to them. However, in many real world problems concerning undirected relationships, it is common that certain state of an object cannot possibly change other objects' states. Besides, an object only remains in this state when no effect on it successfully changes it. This paper defines it as passive state, and presents a framework - Partial Dependent Graphical Models (PDGM) for representing undirected relationships involving these states. Through a static undirected structure with a varying directed edge system, it analytically captures the behavior of variables having passive states. An inference method is developed for reasoning in the model. Experiments and examples are provided to show the effectiveness of PDGM.
Keywords:	Graphical Models, Uncertainty Representation, Probabilistic Dependence, Message Passing
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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Title:	SYNCHRONIZATION OF A CLASS OF COMPLEX NETWORKS WITH NETWORKED COUPLING CHANNELS
Author:	WEIKE SHANG, XINXIN FU, JIN ZHU, HONGSHENG XI
Abstract:	The synchronization problem is investigated for a class of discrete-time complex networks, where the networking induced communication constraints between the coupling nodes are considered. By choosing a novel Lyapunov functional, sufficient conditions for the synchronization of the discrete-time complex networks subject to both coupling delays and packet dropouts are given. The derived criteria are presented in the form of linear matrix inequalities (LMIs), which is easy to be solved numerically. Finally, an illustrative example is presented to verify the effectiveness of the results.
Keywords:	Global Synchronization, Stochastic Complex Networks, Coupling Delays, Packet Dropouts
Source:	Journal of Theoretical and Applied Information Technology June 2013 -- Vol. 52. No. 1 -- 2013
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