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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
August 2013 | Vol. 54 No.2

Title:	A HYBRID ANT COLONY SYSTEM FOR GREEN CAPACITATED VEHICLE ROUTING PROBLEM IN SUSTAINBALE TRANSPORT
Author:	EL BOUZEKRI EL IDRISSI ADIBA, MESSAOUD ELHASSANIA, EL HILALI ALAOUI AHEMD
Abstract:	The Green Transportation issues are gaining interest from theoretical, political and social perspectives. Freight road transport, that is one important aspect of environmentally responsible logistics, is discussed in depth. The activity of transport causes a high rate of negative effects on the environment, as pollutants emission (greenhouse gas).The immediate consequence of this effects is depletion of ozone layer and climate change, that is the reason why we must been reducing the emissions from the sector. Nevertheless, the classical capacitated vehicle routing problem (CVRP) with the objective of minimizing the greenhouse gas especially the carbon dioxide (CO2), states for the problem of finding routes for vehicles to serve a set of customers while minimizing the CO2 emissions. We present in this paper the technique employed to estimate de CO2 emissions, the emissions matrix and their integration into the CVRP model, then we propose a Hybrid Ant Colony System (HACS) to solve the CVRP with the objective of minimizing the CO2. The effectiveness of our approach is tested on a well-known set of benchmarks. Note that our approach is the first adaptation for this problem by the ant colony system.
Keywords:	Environment, Green Transportation, Greenhouse Emissions, Capacitated Vehicle Routing Problem, Emission Matrix, Ant Colony System, Freight Transport
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	EFFICIENT PLANAR SELFCALIBRATION OF A STATIONARY CAMERA WITH VARIABLE INTRINSIC PARAMETERS
Author:	I.EL BATTEOUI, A.SAAIDI, 1K.Satori
Abstract:	In this paper, an unknown planar scene is used to auto-calibrate a camera with variable intrinsic parameters. The images are obtained by changing the zoom of the camera giving the calibration matrices different from one view to another. The principal idea of our method reside in the use three matches only between three images of the planar scene for computing the projection matrix of a parallelogram and the application to the camera a pure rotation giving other equations of self-calibration .The computing of the projection matrix in the ith image leads us to establish a mathematical relationship between it and the image of the absolute conic in the same view. That is said, a non-linear cost function is formulated whose minimization allows us to estimate the parameters of the image of the absolute conic and consequently the elements of each calibration matrix can be determined from those of the image of the absolute conic. The experimental results show the effectiveness of our approach in terms of robustness, convergence and stability.
Keywords:	Auto-Calibrate, Variable Intrinsic Parameters, Absolute Conic, Parallelogram, Pure Rotation
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	SURVEY ON ETL PROCESSES
Author:	AHMED KABIRI, DALILA CHIADMI
Abstract:	In Data Warehouse (DW) environment, Extraction-Transformation-Loading (ETL) processes constitute the integration layer which aims to pull data from data sources to targets, via a set of transformations. ETL is responsible for the extraction of data, their cleaning, conforming and loading into the target. ETL is a critical layer in DW setting. It is widely recognized that building ETL processes is expensive regarding time, money and effort. It consumes up to 70% of resources. By this work we intend to enrich the field of ETL processes, the backstage of data warehouse, by presenting a survey on these processes. Therefore, in current work, firstly (1) we review open source and commercial ETL tools, along with some ETL prototypes coming from academic world, secondly (2) we review the modeling and design works in ETL field. Also, (3) we approach ETL maintenance issue then (4) we review works in connection with optimization and incremental ETL. Finally, (5) we present and outline challenges and research opportunities around ETL processes.
Keywords:	ETL, Data warehouse, Data warehouse Population, Data warehouse Refreshment, ETL Modeling, ETL Maintenance
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	A STUDY ON LOW POWER RECONFIGURABLE FIR FILTERS WITH DYNAMIC CHANGE IN FILTER ORDER
Author:	PRIYA STALIN, C. ARUN
Abstract:	An architectural approach to design low power reconfigurable finite impulse response (LPRFIR) filter. The LPRFIR is well suited when the filter order is fixed and not changed for particular applications and efficient trade-off between power savings and filter performance can be implemented using the proposed architecture. Generally, FIR filter has large amplitude variations in input data and coefficients. Considering the amplitude of both the filter coefficients and inputs, proposed FIR filter dynamically changes the filter order. Mathematical analysis on power savings and filter performance degradation and its experimental results shows that the proposed approach achieves significant power savings without seriously compromising the filter performance. The power savings is up to 20.5% with minor performance degradation and the area overhead of the proposed scheme is less than 5.3% compared to the conventional approach.
Keywords:	Approximate Filtering, Low Power Filter, Reconfigurable Design, High Speed Filter
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	EVALUATION OF INTRA-FLOW CONTENTION IN MANET
Author:	SABRI SAEED, MAHAMOD ISMAIL, ROSILAH HASSAN, ABDULMALEK AL-HEMYARI
Abstract:	In mobile ad hoc networks (MANET) with contention-based MAC, the nodes along a path of transmission contend for access the medium in a distributed manner, this leads to intra-flow contention that cause degradation in the network performance. The precision for determining the intra-flow contention helps any contention-based admission control to make correct decisions to admit or reject any new flows, and in turn improves the performance of the network. However, the calculation of the intra-flow contention is challenging, because the nodes only know their neighbors that are located within the transmission range, but do not aware about those are located between the edge of the carrier sense range and the transmission range, or those are located within interference range of the receiver. This paper analysis the intra-flow contention and evaluates the existing methods in the literature for calculating the contention count. The analysis shows that, the current methods still have limitation in term of the covered area for calculating the intra-flow contention, they also have considerable overhead and delay that cause impact on the throughput in MANETs.
Keywords:	MANET, Intra-flow Contention, Contention-based MAC 802.11, Wireless Radio Ranges
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	AN EFFICIENT CROSS ONTOLOGY-BASED SIMILARITY MEASURE FOR BIO-DOCUMENT RETRIEVAL SYSTEM
Author:	D.JAYASRI, DR. D. MANIMEGALAI
Abstract:	In Biomedical research, retrieving documents that match an interesting query is a task performed quite frequently. Typically, the set of obtained results is extensive containing many non-interesting documents and consists in a flat list, i.e., not organized or indexed in any way. In this paper, we have presented an efficient bio-medical document retrieval system with the proposed cross-ontology based semantic similarity measure. Here, we have utilized the WordNet and MeSH ontologies for matching the input query keyword. As well, we have designed a novel cross-ontology based semantic similarity measure for the query keywords. The proposed system runs with three major processes, which includes 1) Extracting features from the documents based on TF-IDF similarity, 2) Indexing of documents by Rabin Fingerprint algorithm and 3) Retrieving the relevant documents based on distance measure. Finally, the relevant documents are retrieved from the document repository using the matching result. The experimentation process is carried out with the aid of the different set of medical documents and hence achieved the results. The performance analysis of the proposed retrieval system is evaluated by comparing the existing similarity measures along with evaluation metrics such as precision, recall and F-measure by achieving more than 95% accuracy in most cases.
Keywords:	Biomedical documents, Ontology, Wordnet, MeSH (Medical Subject Headings), TF-IDF Similarity measure, Query refinement, Rabin Fingerprint algorithm
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	VECTOR CONTROL FOR INDUCTION MOTOR WITH ROTOR FLUX ORIENTED USING XILINX SYSTEM GENERATOR
Author:	NARJESS SGHAIER, TRABELSI RAMZI, SOFIENE GDAIM, BADRE BOSSOUFI, 1MOHAMED FOUZI MIMOUNI
Abstract:	The objective of this paper is to achieve the algorithm of a vector control for an induction motor with rotor flux oriented using Xilinx System Generator tools added to Matlab/Simulink. This tool allows generating automatically the VHDL file which can be implemented directly in FPGA hardware. This solves all the difficulties encountered in previous researches which require a great knowledge of the programming language VHDL.
Keywords:	FPGA, Induction Motor, Vector Control, Rotor Flux Oriented, Xilinx System Generator, Matlab & Simulink.
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	VIRTUAL COMMUNITIES OF PRACTICE: THE ROLE OF CONTENT QUALITY AND TECHNICAL FEATURES TO INCREASE HEALTH CARE PROFESSIONALS’ SATISFACTION
Author:	HAITHAM ALALI, JUHANA SALIM
Abstract:	Knowledge management in health care sector poses a challenge for policy makers and international health organizations. Nowadays, virtual communities of practice (VCoPs) resolve many problems, which arise from geographical distance and expensive learning process in health care sector. It is used by health professionals and researchers, for improving health care services quality, by enhancing the knowledge of health practitioners. Whereby, satisfaction of using VCoPs is the nucleus its success, since, pleasant experience with VCoPs will lead to better “user satisfaction”, which in turn leads to increase the number of users. This study aims to identify the determinants of member’s satisfaction with VCoPs. We have also developed a VCoPs satisfaction model, based on the information systems (IS) success theories: the technology acceptance model (TAM) and DeLone and McLean IS success model. The proposed model can be used to evaluate and measure the satisfaction of VCoPs in health care sector.
Keywords:	Virtual Community Of Practice, Knowledge Management Initiatives, Knowledge Management System, Health Care Sector, User Satisfaction
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	A PRIORITY DECISION MODEL FOR BERTH ALLOCATION AND SCHEDULING IN A PORT CONTAINER TERMINAL
Author:	CHARIF MABROUKI A, AHMED FAOUZI A, AHMED MOUSRIJ A
Abstract:	A container port terminal is an important link in the overall logistic chain and plays a vital role in the intermodal transport chain. The aim of this paper is study the problem of berth allocation with a priority service by presenting a model of priority, the simulation of the problem show some improvement especially the minimization of the total waiting time of the vessels, and the improvement of the availability of the berths.
Keywords:	Container Terminal, Vessel, Queues, Crane Allocation, Decision Making
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	INCREASING THE LIFETIME OF MANETS BY POWER AWARE PROTOCOL - SPAN
Author:	K. SARAVANAN, T.VELMURUGAN, A. BAGUBALI
Abstract:	Energy consumption is a critical issue for battery-powered mobile devices in ad hoc networks. Ad hoc wireless networks are power constrained since nodes operate with limited battery energy. If the routing protocol is not power aware, nodes simply get drained out of energy not being able to send, receive or forward packets to the destinations, thus degrading the performance of the network and network lifetime. Thus, routing protocols should be designed along with features of power aware protocols. This paper presents ‘Span’ a power aware protocol which is exploited by the routing protocols to increase the lifetime of networks.
Keywords:	MANET, Coordinator, Power Aware Protocol, Increasing Lifetime
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	NEW VARIABLE AMPLITUDE CARRIER OVERLAPPING PWM METHODS FOR THREE PHASE FIVE LEVEL CASCADED INVERTER
Author:	C.R.BALAMURUGAN, S.P.NATARAJAN. M.ARUMUGAM
Abstract:	This paper presents the comparison of various Carrier Overlapping Pulse Width Modulation (COPWM) Strategies for the chosen three phase Cascaded Multi Level Inverter (CMLI). Various new schemes adopting the constant switching frequency and also variable switching frequency multicarrier control freedom degree combination concepts are developed and simulated for the chosen three phase CMLI. The three phase CMLI, is controlled in this paper with Sinusoidal PWM (SPWM) reference along with Carrier Overlapping (CO) techniques and simulation is performed using MATLAB-SIMULINK. The variation of fundamental RMS output voltage and total harmonic distortion is observed for various carrier overlapping techniques. Among the various equal amplitude carrier overlapping techniques such as COPWM-1, COPWM-2, COPWM-3, and COPWM-4, it is observed that COPWM-3 provides less Total Harmonic Distortion (THD) and COPWM-4 provides relatively higher RMS voltage. Among the various Variable Amplitude COPWM (VACOPWM) techniques such as VACOPWM-1, VACOPWM-2, VACOPWM-3, and VACOPWM-4, it is inferred that VACOPWM-3 provides less THD and VACOPWM-2 and VACOPWM-3 provide higher RMS voltage. It also found that VACOPWM strategies perform better than corresponding COPWM strategies.
Keywords:	VACOPWM-1, VACOPWM-2, VACOPWM-3, VACOPWM-4, THD, CF
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	EXTRACTION OF NATIONALITY FROM CRIME NEWS
Author:	ABDULRAHMAN ALKAFF, MASNIZAH MOHD
Abstract:	Most of the crimes committed today are reported on the Internet through news, blogs and social networking sites. These sources have provided a huge amount of crime data, presenting a need for a means to extract useful information. In this research, the evaluation of Direct and Indirect extraction of nationality from crime news, along with the additional references to identify the nationalities of suspects, victims and witnesses is presented. Named entity recognition using gazetteers and rule-based extraction are used, in addition to co-reference resolution to link references. The proposed approach was evaluated and compared to manual extraction system. The results indicate that the proposed approach is able to extract most information related to nationality from crimes news and identify the additional information references. Its performance proved good, with 55% precision, 96% recall, and 70% f-measure evaluation metrics.
Keywords:	Information Extraction, Crime, Nationality, Victim, Suspect
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	EFFECTIVE CHANNEL ESTIMATION TECHNIQUE WITH ADAPTIVE MODULATION FOR MIMO-OFDM SYSTEM
Author:	K.V.N. KAVITHA, K. SARAVANAN, SAIKAT GHOSH, SIBARAM KHARA
Abstract:	Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system is a new wireless broadband technology which has gained great popularity for its capability of high rate transmission and its robustness against multi-path fading and other channel impairments. Irrespective of the techniques being employed in wireless communication System (such as OFDM, MIMO, or MIMO-OFDM techniques) to combat the effects of the channel on the transmitted signals, the availability of the channel state information (CSI) at the receiver end of the communication system remains a crucial factor for effective functioning of these techniques as well as for the successful recovery of the transmitted signal. The major challenge faced in MIMO-OFDM systems is how to obtain the channel state information accurately and promptly for coherent detection of information symbols In this paper, Least Squares (LS) channel estimation and Discrete Prolate Spheroidal Sequences based channel estimation methods are implemented for 2x2 MIMO OFDM systems with Alamouti technique and their performance is compared. In order to improve the performance of the systems further, Adaptive Modulation concept is introduced. The simulation outcome shows that the performance of MIMO OFDM is much better than the conventional methods.
Keywords:	MIMO, OFDM, Alamouti. Least Squares, DPS sequences, Adaptive Modulation
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	SLEEP QUALITY MONITOR USING STRESS ANALYSIS AND REM SLEEP DETECTION
Author:	N RUBAN, SURAJ KUMAR PANDA, SWABHAB PRAKASH MUDULI, A MARY MEKALA
Abstract:	This paper discusses a method for estimating sleep quality. It expresses the sleep quality as percentage. It is based on National Instruments LabVIEW. Two approaches are used to arrive at the sleep quality. Approach one involves quantifying the stress level that the subject is under. It is done by measuring the change in skin resistance which changes with stress. Stress levels have shown to have significant impact on sleep quality. Approach two involves design of an electrooculograph system. The EOG helps in detection of eyeball movement, hence helps in detection of Rapid Eye Movement (REM sleep) during sleep. REM sleep is generally associated with quality of sleep. Hence, the frequency of eyeball movements during sleep and the cycles in which they occur are used as an indication of sleep quality. The results from above mentioned approaches are integrated in program in LabVIEW using a suitable algorithm to give an indication of sleep quality. This project can be used for early detection and treatment of sleep disorders.
Keywords:	Sleep quality, Stress Analysis, Electrooculograph, Rapid-eye movements (REM), National Instruments-Data Acquisition (NI-DAQ), LabVIEW.
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	A SURVEY OF CLOUD COMPUTING SECURITY OVERVIEW OF ATTACK VECTORS AND DEFENSE MECHANISMS
Author:	M. LEMOUDDEN, N. BEN BOUAZZA, B. EL OUAHIDI, D. BOURGET
Abstract:	Enterprises are more and more moving to the cloud to take advantages of its economic and technological model. However, Privacy and Security issues are often cited as the main obstacle to the adoption of cloud computing for enterprises; hence we need to have a clear understanding of security needs in the cloud in order to achieve solutions. The aim of this paper is twofold: firstly, to distinguish general security issues from cloud-related, and secondly, to provide an overview of attack vectors and defense strategies.
Keywords:	Cloud Computing, Security, Vulnerability, Threat, Attack, Defense
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	FUZZY SLIDING MODE CONTROLLER FOR POWER SYSTEM SMIB
Author:	KHADDOUJ BEN MEZIANE, FAIZA DIB, ISMAIL BOUMHIDI
Abstract:	In this paper, a method combining fuzzy logic and sliding mode controller is proposed for the robust control of power system Single-Machine Infinite-Bus (SMIB). The aim of this study is to overcome some shortcoming of conventional power system stabilizer (CPSS), fuzzy logic power system stabilizer (FPSS) and sliding mode controllers (SMC). When conventional PSS is employed, it will result a poor performance. SMC can be used to achieve robust stability in power system. However, in the presence of large uncertainty, a higher switching gain is required, which produce higher amplitude of chattering. In this study, a direct fuzzy logic controller is designed and the sliding mode controller is added to compensate the fuzzy approximation errors. The simulation results clearly indicate the effectiveness and validity of the proposed method, in terms of convergence, time and precision.
Keywords:	Power system Stabilizer, Fuzzy Logic Controller, Sliding Mode Control, Synchronous Machine
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	MULTI-CRITERIA VERTICAL HANDOVER DECISION ALGORITHM IN HETEROGENEOUS WIRELESS NETWORK
Author:	GITA MAHARDHIKA, MAHAMOD ISMAIL, ROSDIADEE NORDIN
Abstract:	Vertical handover is essential to ensure service continuity in a heterogeneous network. Multi-criteria decision is proposed to reduce handover rate and optimizing usage of network resource compared to the conventional handover decision, which used single criteria. The algorithm is evaluated by assessing the performance in terms of number of handoff, load balance index, and network blocking probability. By implementing the proposed handover decision algorithm, the number of handoff decreased up to 90.81%. The average blocking probability decreases by 23.20% and the load balance index was improved by 68.50%.
Keywords:	Vertical Handover, Heterogeneous Network, Multi Criteria, Handover Decision, Handover Algorithm
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	UPDATING RM-ODP BY INTEGRATION OF SOA AND CLOUD COMPUTING
Author:	MOSTAFA JEBBAR , OTHMAN BENAMMAR and ABDERRAHIM SEKKAKI
Abstract:	The objective of ODP is according to ITU-T Recommendation X.901 stated as follows: “The objective of ODP standardization is the development of standards that allow the benefits of distributing information processing services to be realized in an environment of heterogeneous IT resources and multiple organizational domains. These standards address constraints on system specification and the provision of a system infrastructure that accommodate difficulties inherent in the design and programming of distributed systems.” This objective seems to cover cloud computing systems. Therefore, we in this paper discuss the concepts of cloud, and discuss the use of RM-ODP for specifying the solution. We indicate that the current RM-ODP may be too abstract for the purpose, and indicate how to adapt RM-ODP to fit the purpose.
Keywords:	RM-ODP, Viewpoint, SOA, Integration, Cloud Computing
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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Title:	TRANSCEIVER DESIGN AND PERFORMANCE ANALYSIS OF FREE-SPACE OPTICAL COMMUNICATION
Author:	S.SUGUMARAN, A.JABEENA,T.TULASI RAM KUMAR,K.DILEEP KUMAR
Abstract:	In free-space optical communication links, atmospheric turbulence causes fluctuations in both the intensity and the phase of received light signal, impairing link performance. In this paper, we describe several communication techniques to mitigate turbulence-induced intensity fluctuations, that is signal fading. These techniques are applicable in the regime in which the receiver aperture is smaller than the correlation length of the fading and the observation interval is shorter than the correlation time of fading. We assume that the receiver has no knowledge of the instantaneous fading state. When the receiver knows only the marginal statistics of the fading, a symbol-by-symbol Ml detector can be used to improve the detection performance. If the receiver has knowledge of the joint temporal statistics of fading, maximum- likelihood sequence detection (MLSD) can be employed, yielding a further performance improvement, but at the cost very high complexity
Keywords:	Atmospheric Turbulence, Free-Space Optical Communication, MLSD, Spatial Diversity Reception.
Source:	Journal of Theoretical and Applied Information Technology August 2013 -- Vol. 54. No. 2 -- 2013
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