		FeedBack \| Contact Us \| Links \| Site Map

Welcome to Journal of Theoretical and Applied Information Technology

Submit Paper / Call for Papers

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
March 2013 | Vol. 49 No.1

Title:	A FORMAL DEFINITION OF METRICS FOR OBJECT ORIENTED DESIGN: MOOD METRICS
Author:	MERYEM LAMRANI, YOUNES EL AMRANI, AZIZ ETTOUHAMI
Abstract:	Software design metrics, since their apparition, suffer from a lack of formalism in their definition opening room to ambiguities and thus to misleading results. Although, several studies attempted to bring rigor to most well-known suite of metrics, the degree of formalism used to define them, constitutes a significant obstacle towards the built of solid tools support, considered as the key point to an easy integration of measurement in the industry. This paper is a logical continuation of a previous published work where a Z-based formalization of the CK metrics is presented, offering an innovative and easy to follow methodology which successfully manages to provide a solid definition of metrics that deals with complexity, coupling and cohesion. While this work brings formalism at the classifier level, we proceed, in the present, to propose formalism for an overall quality measurement of the object-oriented systems, introducing the invisibility concept formalization and extending the quality indicator properties to encapsulation and polymorphism.
Keywords:	Formal Methods, Z Language, UML Metamodel, MOOD Metrics
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	MANAGEMENT OF CONCURRENCY MODEL IN COOPERATIVE GROUP WORK
Author:	MESSAOUDI FAYCAL, MOUSSAOUI MIMOUN
Abstract:	This paper aims at presenting the problems relating to the management of cooperation sessions. We can by no means tackle such problems in an isolated way because they depend on types of application achieved during a session of cooperation, on the type and number of instances allowed in a given moment, and on the coordination; i.e. the types of dependence between the actions of participants in a session. The aim of this paper, after defining the scope of the computer supported cooperative work, is the identification of the specificities of the field and the different problems to solve when activating a CSCW environment: Computer Supported Cooperative Work. We shall focus on the inherent aspects and the repartition of an environment as regards the coherence of data, and the coherence of copies tolerance to deficiencies.
Keywords:	Group Work, Coordination, Cooperation, CSCW
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	RELIABLE REAL-TIME DATA TRANSMISSION IN MANET USING CONNECTION POSSIBILITY
Author:	P.SIVAKUMAR, K.DURAI SWAMY
Abstract:	In Mobile Ad hoc Networks (MANET), reliability in real time data transmission can be assured by confirming the connectivity of the network. Since, MANETs are characterized by dynamic topology changes; the established connection must be monitored for its consistency. In order to provide and maintain connectivity, in this paper, we propose a reliable real time data transmission technique in MANET using connection possibility. In this technique, a path with high connection possibility is elected as the main path using transmission path discovery mechanism. In addition to this, connectivity maintenance phase is initiated during link failures and delayed replies. In this phase, the path with long link expiration time is chosen for data transmission. By simulation, we show the performance of our technique. It provides reliable connectivity for real time data transmission.
Keywords:	Mobile Adhoc Networks (MANET), Data Transmission, Connection Possibility
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	CONVEX QUADRATIC REFORMULATIONS FOR SOLVING DAYS-OFF SCHEDULING PROBLEM
Author:	CHAKIR LOQMAN, MOHAMED ETTAOUIL, YOUSSEF HAMI, KHALID HADDOUCH
Abstract:	Workforce scheduling is one of the most important and practical problems in the service of industry and continuous manufacturing settings. Solving this problem requires determining how many workers must be assigned to each of the planning periods of work time for an organization. In this paper, our main objective is to solve the days-off scheduling problem with day task constraints. This problem is naturally formulated as 0-1 quadratic programming subject to linear constraints. To solve the latter problem, we formulate it as an equivalent 0-1 quadratic programming with a convex objective function using two convexification techniques, the first one is based on the smallest eigenvalue and the second uses the semidefinite relaxation. Some numerical examples and computational experiments assess the effectiveness of the theoretical results shown in this paper.
Keywords:	Workforce Scheduling, Days-Off Scheduling, Convex Quadratic Reformulation, Semidefinite Programming, Quadratic Programming
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	NEURAL NETWORK MODEL OF POLYMER ELECTROLYTE MEMBRAN FUEL CELL FOR ELECTRICAL VEHICLE
Author:	SUDARYONO, SOEBAGIO, MOCHAMAD ASHARI
Abstract:	This paper presents Neural Network (NN) model of Polymer Electrolyte Membran (PEM) Fuel Cell for electric vehicle. The NN model simplifies the conventional model that considered thermodynamics, electrochemistry, hydrodynamics and mass transfer theory. The NN has a multilayer feed forward network structure and is trained using a back propagation learning rule. The NN model is used to predict the stack voltage of a PEM fuel cell to the vehicle speed. The data for the training of the NN model uses the parametric data that developed from the vehicle model and the PEM fuel cell model. The simulation results have shown that NN model can successfully predict the stack voltage to the vehicle speed. The performance of the network meets the requirement at epoch 50 and the error is 0.000000338.
Keywords:	Neural network, Proton exchange membrane fuel cell (PEMFC), Back-propagation (BP), Vehicle model
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	MAINTAINING POWER SYSTEM STABILITY WITH FACTS CONTROLLER USING BEES ALGORITHM AND NN
Author:	A. SATHEESH, T. MANIGANDAN
Abstract:	Maintaining system stability is one of the most critical problems in power system. Mainly, the stability problems arise when any fault occurs in the system or due to sudden increase in the load power. Thus, to maintain the stability of the system, different types of controllers are used in the literature; among them FACTS controller plays a major role. Among the different types of FACTS controllers, STATCOM, SSSC, UPFC, TCSC etc, are the most commonly used controllers. To maintain the system stability, the major problem is identifying the optimal location for fixing FACTS controller and also computing the amount of voltage and angle to be injected in the system. By considering the abovementioned drawback, here a hybrid technique is proposed for identifying the optimal location for fixing FACTS controller and also for computing the amount of voltage and angle to be injected in the system in order to uphold the system stability. The hybrid technique includes neural network and Bees algorithm. Here, the neural network is used to identify the optimal location for fixing FACTS controller, and the Bees algorithm is used to compute the amount of voltage and angle to be injected in the system. The proposed method is tested for IEEE 30 bus system and the result exhibits the performance of the proposed method in maintaining the stability of the system.
Keywords:	UPFC, Bees Algorithm, Neural Network, Stability, Load flow
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	THE THEORY OF USER ACCEPTANCE AND USE OF TECHNOLOGY (UTAUT): A META-ANALYTIC REVIEW OF EMPIRICAL FINDINGS
Author:	AYANKUNLE ADEGBITE TAIWO, ALAN G. DOWNE
Abstract:	The unified theory of acceptance and use of technology (UTAUT) proposes that performance expectancy, effort expectancy, and social influence predict behavioral intention towards the acceptance of information technology. The theory further proposes that facilitating conditions and behavioural intention predicts use behavior in the acceptance of information technology. Ever since its inception, the theory has been assessed using different applications, and it has become a dè factor model of measuring user acceptance. Nonetheless, in terms of statistical significant magnitude and direction, reports on the model are diverse. Therefore, in this study, based on 37 selected empirical studies, a meta-analysis was conducted in order to harmonize the empirical evidence. The outcome of the study suggests that only the relationship between performance expectancy and behavioural intention is strong, while the relationships between effort expectation, social influence and behavioural intention are weak. Similarly, the relationship between facilitating condition, behavioural intention and use behaviour is also weak. Furthermore, the significance of the relationship between facilitating condition and use behaviour does not pass the fail safe test while the significance of the relationship between behavioural intention and use behaviour does not pass the fail safe test satisfactorily. Implications for further studies are also discussed.
Keywords:	Information Systems (IS), Adoption, UTAUT, Meta-Analytic Review
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	ARCHITECTURE OF MALWARE DETECTOR FOR OBFUSCATED CODE INSPECTION
Author:	LEE LING CHUAN, MAHAMOD ISMAIL, KASMIRAN JUMARI, CHAN LEE YEE
Abstract:	Signature-based malware detection is a very fundamental technique that detects malware by generating signatures. The detection however, is unable to detect obfuscated malware unless pre-generated signature is stored in the database. In this paper, we propose a combination of known packer detection, unpacking module, and heuristic scanning techniques to find and block a malicious program before it manages to be executed locally. Unpacking is the process of stripping packer layers and restoring the original contents. This module contains self-decryption script bodies that are devised to detect and extract the hidden-code bodies of obfuscated malware. Hence, the scanning process only deals with real malware body but not junk block or junk subroutine code. This paper also draws up the implementation and the evaluation of our virus scanning mechanisms. Finally, we present experimental results of our proposed techniques and the results show that our test set is highly accurate.
Keywords:	Malware Detector, Obfuscated, Unpacking, Emulator, Disassembler
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	A REVIEW OF RESPONSIBILITIES OF INTERNET SERVICE PROVIDERS TOWARD THEIR CUSTOMERS’ NETWORK SECURITY
Author:	SHUAIBU HASSAN USMAN
Abstract:	The use of the internet in the 21st century is indisputable to the people worldwide. People have become dependent on the internet’s connectivity to conduct business, share information, and collaborate. Yet, some people use the internet as an avenue for illegal activities such as breaking into other people computers or networks, damaging and stealing information, and blocking or denying legitimate users from services they subscribed. Actually, these illegal activities are made possible because the internet is based on all end users being trusted to act appropriately [20]. Nevertheless, security experts have suggested in some researches that Internet Service Providers (ISPs) should be called to the chain of security responsibilities because they believe that ISPs are in suitable position to protect (police) the internet. They argue that ISPs control the gateway through which internet security breaches pass to their customers. Moreover, they consider that ISPs can use advanced technologies to detect illegal activities. In addition, ISPs have broader knowledge of cyber threats that affect internet users and businesses. The purpose of this paper is to review literatures on the responsibilities of ISPs in securing their customers’ network, and find out whether there are legal provisions, or liabilities that are bindings on the ISPs to provide security for their customers. The questions here, are ISPs responsible for end users’ network security? Are there legal provisions binding ISPs to provide the network security to their subscribers? In addition, what are the recommended security considerations they should be responsible to provide?
Keywords:	ISPs, Users, Internet Security, Legal provisions, Responsibilities
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	SPECTRAL EFFICIENCY ANALYSIS FOR MIMO BEAMFORMING USING ADAPTIVE MODULATION
Author:	R.O. ABOLADE, Z. K. ADEYEMO
Abstract:	This paper describes the analysis of multiple input multiple output (MIMO) Beamforming with adaptive modulation using spectral efficiency as a figure of merit in multipath fading environment. Multipath fading environment causes the transmitted signals to be unreliable due to effects of tall buildings, trees, mountains, moving objects and so on. As a result of increase in demand for information communication technology which is an aspect of wireless communication, this motivated this research work. The system model for MIMO beamforming mode is developed for a 2x2, 3x3 and 4x4 antenna systems configuration in the presence of frequency selective Rayleigh fading channel. A closed- form expression for spectral efficiency is also developed. Received signal strength indication (RSSI) is used for channel estimation in order to change the constellation sizes of the M-ary Phase Shift Keying (M-PSK) modulation scheme in accordance with the fading severity. The analysis is carried out using randomly generated data in MATLAB application package. The results obtained show that the Spectral Efficiency increases as the SNR increases, also as the antenna configurations increase, the average spectral efficiency also increases. This indicates that bandwidth is fully optimized at higher antenna configuration. Mobile wireless designers can find the results obtained useful in the design of improved wireless systems.
Keywords:	MIMO, Beamforming Mode, Spectral Efficiency, Multipath Fading, SNR
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	GEOMETRICAL-MATRIX FEATURE EXTRACTION FOR ON-LINE HANDWRITTEN CHARACTERS RECOGNITION
Author:	SAAD M. ISMAIL, SITI NORUL HUDA SHEIKH ABDULLAH
Abstract:	Most of Arabic handwriting recognition in the literature has focused only on recognizing offline script, and few of research take online case. So it's still remains as an active area of research. however there is a lack of studies in terms of recognizing Arab characters, especially on the online cases. The process of handwriting recognition faces a lot of challenges; feature extraction is the most important problem in character recognition. The main theme of this paper is new feature extraction method employed in online Arabic character recognition. An Arabic character recognition handwritten system cannot be successful, without using suitable feature extraction methods. In this work we have proposed the hybrid Edge Direction Matrixes and geometrical feature extraction method for on-line handwritten Arabic character recognition system. In addition, horizontal and vertical projection profile, and Laplacian filter have been used in the preprocessing phase. The training and testing of the online handwriting recognition system was conducted using our dataset; we have used 840characters from different writers, 504 characters for training, and 336 characters for testing. The evaluation was conducted on state of the art methods in the classification phase. The results have revealed that the proposed method gives best recognition rate for character category.
Keywords:	Online Recognition, Arabic Character, Geometrical Feature, Edge Direction Matrixes, Classificatio
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	A HYBRID ARTIFICIAL BEE COLONY ALGORITHM FOR PORTFOLIO OPTIMIZATION PROBLEM
Author:	ZHEN WANG, RUI OUYANG, XIANGYU KONG
Abstract:	In this paper, a constrained mean-variance model is constructed for the portfolio optimization problems. The model is a mixed quadratic integer programming problem, and it is too hard to solve by using the traditional optimal algorithms. The purpose of this paper is to use a heuristic algorithm to solve this problem. Combined with the differential evolution strategy, a new hybrid artificial bee colony algorithm is proposed for solving the constrained mean-variance model. In the new hybrid artificial bee colony algorithm, a new search scheme and obsolete rules are presented to improve convergent speed of the algorithm. Computational results show that the algorithm has great capability to solve the portfolio optimization problem. It supplies a new method for solving the portfolio optimization problem.
Keywords:	Artificial Bee Colony; Differential Evolution; Portfolio Optimization; Efficient Frontier
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	DESIGNING OF A PULSE WIDTH MODULATION SYSTEM USING EMBEDDED SYSTEM DESIGN TECHNIQUES
Author:	MAZIN R. KHALIL , SAJA B. MAHMOOD
Abstract:	Pulse Width Modulation (PWM) signals have wide applications in different field as communication and control systems. This paper introduces a design of a Micro Blaze soft core processor system that can be accommodated to act as PWM system. The designed processor system is programmed in C language to act as PWM system. The obtained results are traced on chip scope integrated logic analyzer and on oscilloscope for the purpose of comparison .The percentage error is less than 1%.
Keywords:	Soft-Core Processor ,Embedded System, FPGA, Pulse Width Modulation(PWM) , Spartan 3E
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	MR IMAGE RECONSTRUCTION BY PATCH-BASED SPARSE REPRESENTATION
Author:	QIN LIN, WEI GUO,1XUEYANG FU,XINGHAO DING,YUE HUANG
Abstract:	Compressed sensing has been widely used to reconstruct magnetic resonance(MR) images from highly under-sampled k-space data. Generally, there are two main types of dictionary: analytic dictionary and trained dictionary. In this paper, we propose a novel framework to adaptively learn the dictionary and reconstruct MR images from highly under-sampled k-space data. We use the beta-Bernoulli process as a Bayesian nonparametric prior, which can learn dictionary adaptively. This patch-based dictionary learning process can also infers the sparsity of each patch and the noise variance. Our numerical experiments demonstrate that our reconstruction is more accurate compared to existing algorithms.
Keywords:	Magnetic Resonance Imaging(MRI), Compressed Sensing(CS), Dictionary Learning, Bayesian Nonparametric
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	RESEARCH ON THE KINEMICS OF 3/3-RRRS PARALLEL MANIPULATOR
Author:	JINGHU YU, GUILAN CHEN, QIANG WANG, YI CAO, WIEXI JI
Abstract:	It is known that a serious disadvantage of parallel manipulators is the complexity of calculating forward kinematics. Briefly introducing the mathematical model and the corresponding coordinate system, this paper mainly addressed the forward and inverse solution analyses and examples of the 3/3-RRRS parallel manipulator in detail. Especially, a novel geometrical method, i.e. equivalent mechanism is proposed for the forward solution analysis of the manipulator.
Keywords:	Kinematics Analysis; Workspace Analysis; Equivalent Mechanism.
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	OFDM SYSTEM CHANNEL ESTIMATION ALGORITHM RESEARCH BASED ON KALMAN FILTER COMPRESSED SENSING
Author:	JINHE ZHOU, GUOMIN XIA, JURONG WANG
Abstract:	Orthogonal frequency division multiplexing (OFDM) has been considered as a kind of effective means to realize wideband data transmission by applying multiple low rates and parallel data transmission sub-carriers. A very important characteristic of wireless channel is multipath propagation, which makes the received signal overlap, and leads to inter symbol interference (ISI). Therefore, OFDM channel estimation is an important part of OFDM system. This paper proposed a channel estimation algorithm based on Kalman filter compression sensing (KF-CS). By the combination of KF and CS algorithm, the KF-CS gets higher estimation precision with fewer pilots compared with classical algorithms. We adopted LS, LMMSE, CS, KF and KF-CS algorithms in pilot insertion method, obtained complete channel spectral response and got effective comparison of mean square error (MSE) of the channel response. Simulation results show that the proposed algorithm of KF-CS has better accuracy than KF algorithm, and can reduce pilots. So the proposed algorithm can get good channel estimation performance with fewer pilots and improved spectrum efficiency.
Keywords:	Channel Estimation (CE), Compressed Sensing (CS), Kalman Filter (KF), Orthogonal Frequency Division Multiplexing (OFDM)
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	RESEARCH ON WATER QUALITY MONITORING BY MEANS OF SENSOR NETWORK
Author:	HU YUNBING
Abstract:	As society develops quickly and people attach more importance to environmental protection, it is of great research significance to intelligently monitor the environment. Based on the sensor network, doing research on live monitor of water quality, first of all, this paper designs data collecting nodes under water ,which realize communication and organization by means of sound waves; and then it adds dada collecting nodes which automatically form networks by means of Zigbee system form network in every water region; and then it is designed to gather data by wireless network coordinator which are transmitted to servers by GPRS; at last, developed information-alarmed system deal with the data. According to tests, they show that this system is of theoretical meanings and practical value on water monitoring.
Keywords:	Online; Sensor network; Water Quality Monitoring
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	WIENER MODEL IDENTIFICATION BASED ON ADE ALGORITHM
Author:	WEILI-XIONG, MINFANG-CHEN
Abstract:	DE algorithm is a population-based heuristic global search technology. The algorithm has simple principle, fewer control parameters, but has strong robustness, and good optimization performance. This paper uses differential evolution algorithm for parameters identification of Wiener model. Firstly, we analyze the influence of mutation rate F on global parallel search ability and convergence in the process of identification. Secondly, an adaptive mutated differential evolution algorithm (ADE) is proposed. The algorithm keeps individual diversity to avoid premature convergence during the early stage and reduces the mutation rate gradually so as not to damage the optimal solution obtained during the later stage of the search process. Finally numerical simulation is performed on Wiener model. The results show that ADE algorithm has more effectiveness in parameter identification problem than PSO. On the other hand, compared with the general DE algorithm, ADE algorithm identifies the parameters of Wiener model with higher precision as well as shows lower sensitivity to the algorithmic parameters.
Keywords:	Differential evolution; Adaptive mutation; Parameter identification; Wiener model; Particle swarm algorithm
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	INTEGRATION DESIGN AND ANALYSIS OF EXCAVATOR BOOM BASED ON CAD/CAE
Author:	AIMIN JI , KUN ZHU, XINLEI HUANG, XU YIN
Abstract:	According to the existing problems in the development of actual product and working process of excavator working device’s boom, the method of integrated design and analysis for excavator boom is put forward. The defects in the process of CAD/CAE integration are summarized, the integrated design and analysis system including parametric design of boom, database design, detail feature simplification of boom, mid-surface extraction and structure analysis is studied. The parametric model of boom is established based on parametric method, the management of model parameter is realized with the help of database technology and the rapid design of model is reached. Based on the feature of boom’s structure, the simplification rule of model is determined and detail features of boom are simplified automatically by program. The mid-surface extraction process and method of model is studied, the dimensions of model are reduced and precision of mesh is enhanced. With customization technology, the customization analysis platform of boom is developed by secondary development of ANSYS Workbench code.
Keywords:	Boom; Parameterization; Model Simplification; Mid-Surface; Customization Analysis
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	THE DESIGN OF OTA-C FILTER BASED ON THE PROTOTYPE OF LADDER LC FILTER
Author:	CHUNYUAN FENG
Abstract:	The article discusses the design method of operational trans-conductance amplifier-C(OTA-C) filter based on the prototype of LC filter. It gives the OTA circuit used in the filter. And it makes a detailed analysis on characteristics of OTA. A third order OTA-C filter is presented. Its cut-off frequencies can be tuned by the bias DC current of OTA. The filter is easy to integrate. The proposed OTA has been simulated in CMOS technology. Simulation results show that the repose of the OTA-C filter and passive LC filter is almost the same. And it can be used in middle to high frequency circuit.
Keywords:	OTA-C filter, OTA, Ladder, LC Filter
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	AN E-PROCUREMENT SYSTEM INTEGRATING NEGOTIATION AND MULTI-ATTRIBUTE AUCTION
Author:	HONGGUANG PENG
Abstract:	Uncertainty cost of the sellers is a big challenge the buyer(the government) encounters in public procurement setting. An implementation framework of an e-procurement system integrating multi-round negotiation and multi-attribute auction is proposed to help the buyer deal with the problem. A negotiation procedure is firstly introduced to make the sellers reveal their cost information little by little. Then the sellers with lower cost are screened out to participate in the subsequent multi-attribute auction. The research shows that the procurement mechanism is optimal from the perspective of not only the social surplus but also the buyer’s payoff.
Keywords:	E-Procurement; Negotiation; Multi-Attribute Auction
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	AUTOMATIC CONTROL THEORY VIRTUAL EXPERIMENT SYSTEM BASED ON MATLAB GUI
Author:	XING XUENING
Abstract:	Virtual laboratory based on MATLAB GUI to complement the teaching of the course, to help teachers explain the curriculum theory better, and enhance students' understanding of the course. In this paper, listed common experiment in "Automatic Control Theory", and given the GUI panel design and program design. Given the corresponding parameter can get curves and data in applications, to further analyze the influence of different parameters on the system. The method has a friendly interface, easy operation, precise and intuitive image data，make up for deficiencies in the traditional teaching, help to improve the quality of teaching and student understanding of "Automatic Control Theory" course.
Keywords:	MATLAB, GUI, Automatic Control Theory, Virtual Experiment
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	SERVICE CAPABILITY EVALUATION OF THIRD PARTY LOGISTICS ENTERPRISE IN E-COMMERCE ENVIRONMENT
Author:	CHAOGAI XUE
Abstract:	In the new E-commerce environment, it is necessary to evaluate the service capability of logistics enterprises. To this end, this paper deals with a new quantitative approach to the service capability evaluation of third party logistics enterprises. Firstly, based on the GQM (Goal Question Metric), a set of service capability evaluation index system of logistics enterprises is proposed. Secondly, based on the index system, the service capability evaluation model is built and the corresponding algorithm, i.e., Refining High Index (RHI) algorithm, is given. Finally, an example is used to show the application of the service capacity evaluation indexes, evaluation model and RHI algorithm, which provides quantitative references for service capability evaluation of logistics enterprises.
Keywords:	Service Capability, Quantitative Evaluation Model, Third Party Logistics Enterprise, Refining High Index Algorithm, E-Commerce
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	MODELING OF COMPLEX SPATIO-TEMPORAL NETWORKS FOR IOT-CLOUD
Author:	LIU LIZHAO, LIU JIAN, ZHU SHUNZHI, SUN ZHONGHAI, LI QI
Abstract:	The article discusses the spatial temporal characteristics of the Internet of Things, makes a description and classification of IOT intelligent terminals and non-intelligent terminals. Supposes that as the cloud computing widely used, the IOT terminal entities will eventually connect with the computing entities, the final formobjects associated a IOT-cloud. Objects associated with IOT-cloud entities will have dual attributes of the Internet of Things and cloud computing. IOT itself have a complex social network characteristics and the complex computer network characteristics. The space-temporal network modeling process ues the complex sclae-free complex network modeling steps and describing method, the IOT-cloud secure access pattern use the cloud computing security mode. Distributed access control and quantify security decision-making process are made as an example to illustrate the correctness and practicality of the model.
Keywords:	IOT，Cloud Computing，Cloud Securety，Access Control，Scale-Free Networks, Complex Spatio-Temporal Network
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	STUDY ON THE RELATIONSHIPS AMONG CUSTOMER SATISFACTION, BRAND LOYALTY AND REPURCHASE INTENTION
Author:	JI FENG HE YANRU
Abstract:	To explore the influences of multiple reference on brand assessment and build relationships among them, this research used “expectancy disconfirmation, brand preference and alternative attractiveness” as the comparison result and “customer satisfaction, brand loyalty and repurchase intention” as the result of brand assessment, and chose “brand consumers of mobile communication service providers” as the research subject. Having empirical analysis, expectancy disconfirmation and brand preference presented positive relations to customer satisfaction, and brand preference had a positive effect on repurchase intention, while alternative attractiveness revealed negative relations to repurchase intention. In addition, expectancy disconfirmation and brand preference affected repurchase intention through single intervening variable（customer satisfaction） or dual intervening variables（customer satisfaction and brand loyalty）, and brand preference did not regulate the influence of alternative attractiveness on customer satisfaction, whereas, brand preference adjusted the effect of alternative attractiveness on repurchase intention.
Keywords:	Alternative Attractiveness, Customer Satisfaction, Brand Loyalty, Repurchase Intention
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	EVALUATING METHODS OF TELECOM DATA NETWORK BASED ON THE SCORE OF INDEX SYSTEM
Author:	HUANG WENHUA
Abstract:	Evaluation is a basic requirement to protect telecom data networks. How to carry out a usable evaluation is a main problem to solve in this paper. The index system is the basis of the analysis. The general framework is combined with the structure of China telecom data network to get the index system. The evaluation method is established based on the score of index system. The score is obtained through grading every index parameter and weighted sum. The feasibility of the method is verified by an example. The theoretical basis is given for security evaluation of telecom data networks in this research.
Keywords:	Telecom Data Networks; Security Evaluation; Index System; Score
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	EVOLUTIONARY SIMULATION MODEL OF DYNAMIC HFCV INDUSTRY MARKET STRUCTURE
Author:	TAO MA, MING-QI CHEN, XUE ZHANG , PING MA
Abstract:	Facing the hydrogen energy economy, Hydrogen Fuel Cell Vehicles (HFCVs) will play an important role. China is becoming more and more interested in transitioning their vehicle fleet to HFCVs as they look forward into this century. The aim of this paper is to highlight some of the research and development work which has occurred in the past five years on HFCVs commercialization, with a focus on simulation model of its dynamic market structure. We take Lotka-Volterra model account into the evolutionary simulation model of the dynamic HFCVs market structure. And with which to analysis the market evolutionary character aimed on increasing the HFCVs supply. First, based on the rules of increasing the HFCVs industry market supplement and the substitution, assert the evolutionary simulation model of the HFCVs industry market and its market structure. Then improve the Lotka-Volterra equation with time variable. Based on above we set the evolutionary simulation model of the HFCVs industry market. Secondly, with the mean value method to solve the model, we analyze two kinds of relationships about the evolutionary system: the one is between the supply increase of HFCVs industry market and the annealation of the non-hydrogen energy, and the other is among the increment speed of the renewable energy supply, the annealation of the HFCVs industry market and its fluctuate. During the analysis, our reasoning comes down to four deductions about the limit of the the HFCVs industry market supply, the relative dependence and the growth in the HFCVs industry market. Lastly, combining of the above analysis, we discuss the enlightenment of the four types of the the HFCVs industry market on the HFCVs industrialization policy.
Keywords:	HFCVs Industry Market, Lotka-Volterra Simulation Model, Dynamic Evolution.
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	RESEARCH AND APPLICATION OF THE DRY-HUNG AND WET-LYING CONSTRUCTION TECHNOLOGY OF TILED-ROOF WITH STEEP SLOPE IN SEVERE COLD REGION
Author:	BAI XUE, YAO CHUANQIN, BAI RONG, WANG CHAO, MA HAIBIN
Abstract:	Based on the project of Hengda Oasis in Shenyang, this paper fully studies the construction technology of the tiled roof with steep slope in severe cold region, and proposes that the new technology of dry-hung and wet-lying is a good way to solve the common faults existing in the construction of roof with steep slope in severe cold region, which offers a good example to similar projects. It has a promising prospect and popularizing significance in severe cold region.
Keywords:	Severe Cold Region, Tiled Roof, Steep Slope, Construction Technology
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	STUDY ON SEISMIC WAVE PROPAGATION CHARACTERISTIC OF DEEP-HOLE LOOSE BLASTING IN COAL MINE
Author:	XU YING, WANG HAI-BO, ZONG QI
Abstract:	According to the distribution of faults in coal face, deep-hole loose blasting scheme is formulated and vibration monitoring is conducted. Obtained seismic wave attenuation rule of deep-hole loose blasting, HHT method is adopted for vibration signal decomposition to research the characteristic of spectrum and the energy distribution of the signal. Research results show that seismic wave propagation characteristic of deep-hole loose blasting accords with hard rock spread rule in Safety Regulation for Blasting, the linear component of the ligature between survey point and explosion source is the largest in the three direction components of vibration velocity, which is resulted from the difference of energy loss between different kinds of seismic wave in propagation process; the duration of blasting vibration is about 150 ms, main energy is concentrated in the low-frequency area of less than 100 Hz, and energy can be divided into several “sub-bands” with frequency distribution. According to attenuation law, the biggest single shot charge of deep-hole loose blasting in the site can be calculated inversely, and measures for reducing blasting seismic hazard in construction are proposed, which would provide a reference for the construction.
Keywords:	Coal Mine; Deep-Hole Loose Blasting; Vibration; HHT Method; Spectrum; Energy
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	AN APPROACH BASED ON ITERATIVE LEARNING ALGORITHM FOR CHINESE TEXT HIERARCHY FEATURE EXTRACTION WITHOUT LEXICON
Author:	SHAOHUA JIANG
Abstract:	A great deal of information included in Chinese text is invaluable asset for further text mining, but the difference between Chinese and the western languages imposes restrictions on further utilization of Chinese text. No distinction indication between words by using spaces is one of the major differences between Chinese, also some other Asian languages, such as Japanese, Thai, etc., and Western languages. Chinese segmentation and features extraction is essential in Chinese natural language processing because it is a precondition for further Chinese text information retrieval and knowledge discovery. Maximum matching and frequency statistics (MMFS) segmentation method based on length descending and string frequency statistics is an effective segmentation and extraction method for Chinese words and phrases, but there are still some shorter words and phrases included in the longer ones extracted by MMFS can’t be obtained. In order to solve this problem, this paper presents a novel Chinese hierarchy feature extraction method combined MMFS with iterative learning algorithm. This method can extract hierarchy feature according to morphology with no need for lexicon support, no need for acquiring the probability between words in advance and no need for Chinese character index. Experimental results confirm the efficiency of this statistical method in extracting Chinese hierarchy feature. This method is also beneficial to feature extraction for other Asian languages similar to Chinese.
Keywords:	Hierarchy Feature Extraction, Chinese text, Iterative Learning Algorithm
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	A COST-BASED VERTICAL HANDOFF WITH COMBINATION PREDICTION OF SINR IN HETEROGENEOUS WIRELESS NETWORKS
Author:	YU ZHANG, ZHENGQI ZHENG, LINA CHEN
Abstract:	It is well known that to provide seamless mobility and transmission in heterogeneous wireless networks, a vertical handoff technique is required to guarantee an Always Best Connected. This paper thus presents a cost-based vertical handoff algorithm with combination prediction of SINR (CPSVH) in heterogeneous wireless networks to make handoff decision. Our approach involves two steps, first SINR is predicted by combining GM (1,1) and BP neural network for accurate timing to trigger handoff, and then a handoff decision on the optimal network is made by way of a cost function. The cost function, on basis of multi-attribute QoS consideration, is composed of SINR, user preference, user traffic cost and available bandwidth from accessible networks, with the weight of each attribute in the cost function calculated by a fuzzy judgment matrix constructed for this purpose. Meanwhile, the stability period (defined as the waiting time before handoff) is also taken into regard to reduce unnecessary handoffs. The simulation results in this study reveal that the proposed handoff scheme outperforms other approaches in terms of system throughput, dropping probability, and vertical handoff numbers.
Keywords:	Vertical Handoff, SINR, Combination Prediction, Cost Function
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	A HYBRID ALGORITHM BASED ON LS-SVM AND BACTERIAL FORAGING APPROACH FOR BURNING-THROUGH-POINTS(BTP)PREDICTION IN SINTERING PROCESS
Author:	SONG QIANG, WANG AI-MIN
Abstract:	In order to solve the analysis problem more efficiently and quickly, we presented a hybrid method based on LS-SVM and Bacterial Foraging Optimization (BFO) in this study.The social foraging behavior of Escherichia coli bacteria has been used to solve optimization problems. This paper proposes a hybrid approach involving Bacteria Foraging Optimization Algorithm (BFO) and LS-SVM algorithms for prediction problems. It is found that Bacteria Foraging Algorithm (BFO) is capable of improving the speed of convergence as well as the precision in the desired result. Simulation results clearly illustrate that the proposed approach is very efficient and could easily be extended for other global optimization problems.It can conclude that BFO is effective and rapid for the cluster analysis problem.
Keywords:	Bacteria Foraging Algorithm (BFO),LS-SVM,Optimization,BTP
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	PRICE TIME SERIES LONG MEMORY ANALYSIS AND PREDICTION STUDY
Author:	XIAOBING CHENG, MINGPING XIA, RUIKAI PAN, DAOPING WANG
Abstract:	The R/S test has been extensively used in testing the long memory of financial time series, but little attentions have been paid on its validity. The paper sets the chemical raw materials styrene price time series as an example, to test the stable of the price series. It indicates that we should give prudent explanation for the R/S test, and then establish the ARFIMA model to determine the data generation process with fractal characteristics. Thus the fractal theory can be used to describe the price time series and provide theoretical support for the price time series forecasting.
Keywords:	Validity, Long memory, Forecasting
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	EVALUATION AND RESEARCH ABOUT THE EVOLUTION AND EFFICIENCY OF CHINESE TELECOMMUNICATION INDUSTRY VALUE CHAIN
Author:	ZHANG QUAN, ZHANG YANTAO, HAN JANGWEI
Abstract:	In order to explore the mechanisms of the telecommunication industry value chain value growth and promote the Chinese telecommunications industry’s better and faster development, this article ,on the basis of segmentally dividing the evolution of China's telecommunication industry value chain, finds that the efficiency of China's telecom industry value chain evolution had been significantly improved by using DEA model to estimate and comparatively analyze the efficiency of China's telecommunication industry value chain integration, competition , coordination and value growth, which is due to the main competitors of telecom industry value chain, the increase of links as well as the weakened surveillance ability of telecommunication operators resulting from market reforms, loosen surveillance and technology progress and other factors, contributing to the integration, competition and collaboration of the upstream and downstream enterprises of the industry value chain.
Keywords:	Telecommunications Industry， Evaluation Of Industry Value Chain， Efficiency Of Integration， Efficiency Of Competition And Collaboration， Efficiency Of Value Growth
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	STABILITY CONTROL FOR SIX-WHEEL DRIVE ARTICULATED VEHICLE BASED ON DIRECT YAW MOMENT CONTROL METHOD
Author:	YITING KANG, WENMING ZHANG
Abstract:	Six-wheel drive (6WD) articulated dump truck has excellent passing ability and high productivity, but its stability should be improved. A dynamic model of 6WD articulated vehicle with 3 degree-of-freedom (DOF) is established. With the control variables of yaw velocity and side-slip angle at mass center of front body, a feedfoward-feedback control system is designed by linear quadratic regulator (LQR) theory based on direct yaw-moment control (DYC) method. A simulation with a step input of articulated angle is conducted, and the result shows that the value of side-slip angle at mass center, yaw velocity and lateral acceleration all drop after control, and the control system is effective to improve the vehicle stability. The weight coefficients are regulated to analyze their influence on control effect, and the result indicates that it is necessary to regulate them to reach the optimum of both energy and error of control.
Keywords:	Articulated Vehicle, Vehicle Stability Control, Direct Yaw Moment Control (DYC), Linear Quadratic Regulator (LQR)
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	A NEW ALGORITHM OF THE DATA MINING MODEL IN CLOUD COMPUTING BASED ON WEB FUZZY CLUSTERING ANALYSIS
Author:	XIANFENG YANG, PENGFEI LIU
Abstract:	Cloud computing are Internet-based services to increase the use and delivery models, usually involving the Internet to provide easy to dynamically scalable and often virtualized resources. To solve these problems, the proposed web data mining method based on cloud computing: the massive data mining tasks decomposed into parallel processing on multiple servers. Web fuzzy clustering of objects is given Web object collection, object properties of the source data, and its direct role object is a Web fuzzy similarity matrix or the Web, fuzzy equivalent matrix. The paperr presents the new algorithm of the data mining model in cloud computing base on web fuzzy clustering analysis. The experimental results show that this method can effectively improve the performance of data mining.
Keywords:	Fuzzy Clustering, Data Mining, Cloud Computing
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	HUMAN-CENTERED ENVIRONMENT DESIGN IN INTENSIVE CARE UNIT
Author:	Y. LI，A. ALBAYRAK，R.H.M. GOOSSENS，D. J. XIAO， J. JAKIMOWICZ
Abstract:	Because of high risk and instability of the patients in Intensive care unit(ICU), the design of ICU is very difficult. ICU design, auxiliary building design, lighting design, noise control and other aspects can also enhance its management. In this paper, we compare ICU design in China and Holland based on related standards. We also premeditate the indoor environment from planning perspective, analyze patients, their families, medical staff and space requirement to conduct research in ICU design. With the social progress and science development, we more and more emphasize human-center design. All of our goal is to provide comfortable and effective ICU environment for patients, their families and medical staff, satisfying the demands of different needs and balancing the economy, quality and efficiency.
Keywords:	Human-Centered, Industrial Design, Medical Environment, Intensive Care Unit
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	DEVELOPMENT OF VIRTUAL WALKTHROUGH SYSTEM OF CHINESE HERBAL SLICES WORKSHOP
Author:	XIANG CHAOYANG, CHEN XIAONI, ZHUANG YIXIU
Abstract:	Practical teaching plays an important part in higher education, and also brings some difficulties. One of the difficulties is that the condition of experimental and practical trainings can not satisfy the current requirement of teaching. On account of this problem, this paper introduces a case of developing the virtual walkthrough system of Chinese herbal slices workshop. In this case, it explains the methods and techniques to construct virtual simulation walkthrough system with Quest 3D. For the system can be easily and quickly developed, this case can be an object lesson for similar or relevant instructional activities.
Keywords:	Quest3D, Workshop Roaming, Scenes Changes, Virtual Simulation
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	CONSTRUCTION OF WIRELESS SENSOR NETWORK MANAGEMENT SYSTEM BASED ON FUZZY CLUSTER ANALYSIS
Author:	HONGHUI HE, WENKUI ZHENG
Abstract:	Wireless sensor network is used to sense the objective physical world, access to the information of the physical world. Fuzzy cluster analysis, it is involving the fuzzy boundaries between things of things according to certain requirements for the classification of mathematical methods. Wireless sensor network is used to sense the objective physical world, access to the information of the physical world. The paper presents construction of Wireless sensor network management system based on Fuzzy cluster analysis. Wireless sensor network system based on Fuzzy cluster analysis is a large number of stationary or moving sensors consisting of self-organization and multi-hop wireless network with the aim of the collaboration awareness, acquisition.
Keywords:	Wireless Sensor Network, Fuzzy Cluster Analysis, System Clustering
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	THE RESEARCH OF NOVEL SPATIAL SPECTRUM ESTIMATION ALGORITHM BASED ON THE MULTI-SCALE SYSTEMS
Author:	JING ZHANG, KECHENG LIU, CAIXIA YANG
Abstract:	Spatial spectrum estimation of is an important branch of array signal processing. A multi-scale system theory is the key to the multi-scale system to define a new concept, which is similar to the discrete time system Z transform. This paper mainly introduces the spatial spectrum estimation of beam forming method, linear prediction method, subspace method, parameter method, and for each algorithm were discussed analysis comparison. The paper presents the research of novel spatial spectrum estimation algorithm based on the multi-scale systems. Experiment results show that this system is feasible and efficient. Finally, by using the Gram method and the rank criterion method for multi-scale modeling of controllability are shown.
Keywords:	Spatial Spectrum Estimation, Multi-scale, Wavelet Transform
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	ASSESSMENT OF STRUCTURE STRENGTH AND PRIMARY PARAMETER ANALYSIS FOR JACK-UP/SHIP COLLISION
Author:	HU AN-KANG, JIANG WEI, LIN YI
Abstract:	It’s commonly known that there are high collision risks between vessels and jack-ups in work condition. When such an unfortunate incident happens, not only would the jack-up be damaged but also drilling activities might get suspended and economic losses would occur. Comparing with other offshore installations, jack-ups are much more flexible and have a much lower degree of redundancy, but its collision danger has not been paid sufficient attention. As a matter of fact, there is little research on this subject in our country. Based on non-liner finite element analysis methods, taking a 300ft jack-up designed by Shanghai CIMC Offshore R&D Center as an illustrative example, one approach of assessing structural strength for collision between jack-up and vessel considering the initial state of the jack-up and residual strength is put forwarded. Furthermore, the influence of impact parameters on structure damage and dynamic response is considered. The conclusion of this analysis may be helpful to structural design against collision loads for jack-ups.
Keywords:	Jack-Up, Collision Strength, Impact Parameters
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	ADAPTIVE DOO-SABIN SUBDIVISION ALGORITHM
Author:	LIU XUMIN, WANG XIAOJUN, YANG XIANPENG, LI CAILING
Abstract:	At present most of the subdivision algorithm are 1-4 subdivisions. as the number of subdivision increases, the grid too-rapid growth in the number of patch and die after the breakdown of huge volume of data make it difficult to deal with, we proposed a radical Doo-Sabin Mode adaptive subdivision algorithm addressing the problem. As a measurement criteria, the average vector of the vertex and the angle between the intersecting surfaces of the vertex are used to divide the surface, and then make local subdivision. In this way, when the times of subdivision are fewer (the demand of smoothness is not too high) , the effect of subdivision has little difference , but efficiency of the algorithm can be greatly improved.
Keywords:	Surface Subdivision; Doo-Sabin Subdivision; Quadrilateral Grid; Threshold
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	ROBUST CONTROL ALGORITHM BY ADJUSTING INPUT VOLTAGE FOR DC-DC CONVERTERS
Author:	YANHUA XIAN, JIUCHAO FENG
Abstract:	In view of the switching property and the existence of disturbance in DC-DC converters, a robust control algorithm by adjusting input voltage is studied based on the switched linear model of DC-DC converters. Considering the output disturbance and weighted functions chosen for perturbation input and controlled output, the augmented switched linear model of DC-DC converters is established, in which the input voltage is as control variable. According to linear matrix inequality (LMI) and H∞ control theories, the sufficient condition of controller existence and the design method of H∞ controller for the proposed switched system are derived in the form of LMI. The obtained controller is such that the closed loop system is asymptotically stable under arbitrary switch conditions and has an H∞ disturbance attenuation bound. The simulation results for buck and boost converters are presented to show that the good robust stability can be obtained with respect to the output disturbance. By adjusting the input voltage, the output voltage can be stabilized on the expected value with the parameters perturbation under arbitrary constant duty cycle, which demonstrates the effectiveness of the proposed algorithm.
Keywords:	H∞ Control, Switched System, Linear Matrix Inequality(LMI), DC-DC Converter
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	SURROUNDING ROCK LOOSING ZONE MEASUREMENT IN UNLINED TUNNELS OF UNDERGROUND CRUDE OIL STORAGE
Author:	YANG SHANG-YANG, LI SHU-CAI, XUE YI-GUO
Abstract:	The surrounding rock loosing zone is one of the most critical factors of the tunnels stability. This paper applies the ultrasonic wave method to measure the surrounding zone. In this project, five holes with the diameter of 90 mm and the depth of 7 m are bored in each section. The measured datas indicate that the range of the loosing zone of the tunnel is 1.2 ～ 1.8 m. In order to verify the accuracy of the ultrasonic testing data, the system of borehole television measurement is adopted in the main tunnel. The measurement results are in good agreement with the results of the ultrasonic testing. The results can provide the verification for the rationality of bolt support and the practical experiences and guideline for the design of support system for loosing zone of surrounding rock in the similar tunnel conditions.
Keywords:	Loosing Zone(LZ), Ultrasonic Wave(UW), Borehole Television(BT), Bolt Support(BS), Crude Oil Storage(COS)
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	FUZZY OPTIMIZATION METHOD AND ITS APPLICATION OF SIMILAR MATERIAL RATIO IN 3D GEO-MECHANICAL MODEL
Author:	ZHANG LONG-YUN, ZHANG QIANG-YONG, YANG SHANG-YANG, CHEN XU-GUANG
Abstract:	The similar material plays an important role in Geo-mechanical model test, and the proportion influences the test results directly. According to the physical and mechanical properties of the prototype, the cementitious material with good elastic-plastic for iron crystal sand (ISBM) was chosen as the similar material for the research on failure mechanism of surrounding rock under the environment of excavation and high geo-stress in deep tunnel. Three mixing proportions that matched with similar conditions were got from more than 300 groups of matching test. Relying on the specific indoor test data, and the main physical and mechanical parameters of the original rock were taken as the evaluation index system, the improved fuzzy optimization mathematical model of similar material was established. It might help you make your decision in cases where several solutions seem to be able to fit the bill. The optimal proportion of the similar material was got by using the model, and the optimization result was applied to the true 3 d geological mechanical model test for similar material, and simulated successfully the process of excavation in high geo-stress environment deep tunnel. The reappearance of the zonal disintegration phenomena of surrounding rock under excavation in high geo-stress environment deep tunnel of Dingji coal mine.
Keywords:	Geo- Mechanical Model(GMM); Similar Material Ratio(SMR); Gray Fuzzy Optimization(GFO); Deep Tunnel(DT)
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	ESTABLISHING STRUCTURE FOR ARTIFICIAL NEURAL NETWORKS BASED-ON FRACTAL
Author:	Yang Zong-chang
Abstract:	The artificial neural network (ANN) is a widely used mathematical model composed of interconnected simple artificial neurons, which has been applied in a variety of applications. However, how to determine number of neurons in the hidden layers is an important part of deciding overall neural network architecture. Many rule-of-thumb methods for determining the appropriate number of neurons in the hidden layers are suggested. In this study, to the puzzling problem of establishing structure for the Artificial Neural Networks (ANN), from a microscopical view, two concepts called the fractal dimension of connection complexity (FDCC) and the fractal dimension of the expectation complexity (FDEC) are introduced. Then a criterion reference for establishing ANN structure based on the two proposed concepts is presented that, the FDCC might not be lower than its (FDEC), and when FDCC is equal or approximate to FDEC, the ANN structure might be an optimal one. The proposed criterion is examined with good results.
Keywords:	Artificial Neural Networks, Structure Establishing, Connection Complexity, Fractal Dimension.
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	WELL FIELD THREE-DIMENSIONAL DRILL STRING VIBRATION SIGNALS’ PERIODIC VIBRATION NOISE SEPARATION METHOD RESEARCH
Author:	WU Haocheng, DAI Yongshou, SUN Weifeng, LI Ligang, ZHANG Yanan
Abstract:	The effect of periodic vibration noise in wellsite is an important factor which impact analysis on three-dimensional drill string vibration signal. In order to obtain more accurate characters of three-dimensional drill string vibration signal that reflects the drilling tools condition, we conduct researches on the periodic vibration noise in the wellsite, independent component analysis algorithm which based on negative entropy for periodic vibration noise signal separation was adopted. At the same time, in order to improve the effect of algorithm demixing, an improved Particle Swarm Optimization algorithm was introduced, combining with periodic noise components which exist in three directions of drill string vibration signals to seek the optimal mixed matrix by which can structure multi-channel mixed-signal of independent component analysis algorithm. This method has high similarity after separation each signal components, in operation has high efficiency. Through the experimental simulation, the method was proven feasible in the drill string vibration periodic noise signal separation.
Keywords:	Drillstring Vibration Signal; Periodic Noise; Independent Component Analysis (ICA); Parameter Optimization
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	REAL TIME SKELETAL ANIMATION WITH DUAL QUATERNION
Author:	XIANG FENG, WANGGEN WAN
Abstract:	Though Combination of Quaternions and matrix has been a popular tool in skeletal animation for more than 20 years, classical quaternions are restricted to the representation of rotations. In skeletal animation and many other applications of 3D computer graphics, we actually deal with rigid transformation including both rotation and translation. Dual quaternions represent rigid transformations nearly in the same way as quaternions represent rotations. In fact, Algorithms based on dual quaternions show better properties than those based on quaternions, including increased computational efficiency, reduced overhead and coordinate invariance. In this paper we show how to generalize established techniques for quaternions to dual quaternions to include all rigid transformations, and implement real-time character animation with dual quaternions under the platform of OpenGL in order to demonstrate the superiority and effectiveness of dual quaternions.
Keywords:	Skeletal animation, Dual quaternion, Rigid transformation, Real time
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	RECOGNITION AND LOCALIZATION OF HARMFUL ACOUSTIC SIGNALS IN WIRELESS SENSOR NETWORK BASED ON ARTIFICIAL FISH SWARM ALGORITHM
Author:	ZONGZHANG LI, HAIXIA ZHANG, JIALI XU AND QINGYU ZHAI
Abstract:	The recognition and localization of harmful acoustic signals in a certain scenario are of great importance. In this paper, we propose a scheme for harmful acoustic signals recognition and localization based on fish swarm algorithm for wireless sensor network. We firstly optimize the coverage where the harmful sound source can be detected efficiently. And then, we get the eigenvalue of the harmful acoustic signals by using the LPC (Linear Prediction Coefficients). After analyzing the similarity between the eigenvalue and the data pre-stored in the data base, we can find out the harmful sound. After detection, the harmful resource is located with the help of its closest nodes which are chosen based on time delay. Simulation results show that the proposed scheme can improve the efficiency of harmful source detection and accuracy of the localization.
Keywords:	Artificial fish swarm algorithm; Harmful acoustic signals; Linear Prediction Coefficients; Recognition; Localization
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	AN APPROACH BASED ON MULTI-FEATURE WAVELET AND ELM ALGORITHM FOR FORECASTING OUTLIER OCCURRENCE IN CHINESE STOCK MARKET
Author:	FANG ZHIJUN, ZHAO JING, FEI FENGCHANG, WANG QIANGYING, HE XIN
Abstract:	The prediction of outliers plays an important role in stock arbitrage and risk avoiding. While most of researches focused on detecting outliers and removing them to forecast time series data, few focused on forecasting the occurrence of outliers. The main goal of this work is to forecast outlier occurrence in Chinese stock market. Firstly, we detect abnormal points of two market indexes and six individual stocks based on multi-feature wavelet method. Compared with single feature wavelet method, multi-feature wavelet method was more reliable, since it captures more information of the market and avoids “masking effect”. Moreover, according to the detected results, we construct an outlier forecasting model for the two market indexes and six individual stocks based on multi-feature extreme learning machine (ELM) algorithm. Finally, we find out the optimal number of hidden nodes to forecast when the mean of forecasting accuracy was the highest which approximately equals 98.255% and the variance of forecasting accuracy was only 0.000193.
Keywords:	Outlier Forecasting, Outlier Detection, Multi-feature Wavelet, Extreme Learning Machine (ELM)
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	REALISTIC RENDERING IN WEBGL
Author:	LI YU, XIAOMENG MAO
Abstract:	HTML5 introduces many new features, in which the Canvas can use WebGL technology to achieve 3D graphics rendering. This paper presents a method to render virtual models in WebGL on browser platform. We use Vertex Shader and Fragment Shader programming to achieve realistic graphics, including Phong illumination model, Phong shading and texture mapping. The advantages of this method are 1) The browser support WebGL natively, so there is no need to install any plug-ins, and it is cross-platform; 2) 3D scene roaming supported (pan, zoom and rotate).
Keywords:	WebGL, Vertex Shader, Fragment Shader
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	SUITABLE FOR NETWORK LOAD MUTATION OF THE MAC PROTOCOL
Author:	XINGWEI ZHAI, DEGAN ZHANG, XUECHAO MING, KE ZHENG, YUXIA HU
Abstract:	With the development of IOT (things of internet), people propose more and more requirement about the wireless sensor networks performance for its key technology. It not only needs to meet the reliability of the networks, but also put forward higher requirement of the network life. A key factor influencing the network life is the network energy-limited. Therefore, energy-saving has become a key problem for the wireless sensor networks communication protocol design. an energy-saving MAC protocol based on network load mutations is designed. The protocol considers the redundancy problem between the sensor nodes data, takes different scheduling methods for different levels of nodes. A cording to the network load mutation, dynamically adjust to the detective and dormancy time. This method solves the unfairness of the network energy and delay, and can better satisfy changes in the complex network environment .
Keywords:	Network Load Mutation, MAC, Protocol, Energy-Saving, Wireless Sensor Network (WSN),
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	SUBSIDY MODEL DESIGN OF GREEN BUILDINGS BASED ON GOVERNMENT BENEFITS
Author:	YANG GAO-SHENG, LI XIU-YUN, XU XIN
Abstract:	This paper carries a deep analysis on the cost and economical attributes of green buildings, and points out that in order to promote the development of the green building market, the government should motivate the property developers by maintaining a balance in the profits among the project participants, apart from the necessary supervision and constraint. This paper defines all the parameters that have effect on the development of the green buildings and establishes a subsidy model, regulates the supervision of the government and incentive system, and maintains a balance between them. Finally, a specific combination scheme of government expenditure is put forward in this paper and is explained further by example.
Keywords:	Project Management, Green Building, Supervised Cost, Incentive Cost, Subsidy Model
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	SIMULATION AND ANALYSIS OF ULTRASONIC GUIDED WAVE NONDESTRUCTIVE TESTING OF COFFERDAM ROD BASED ON DISPERSION CURVES
Author:	HU YANG，CHENG WANG
Abstract:	Nondestructive testing of cofferdam rod bond integrity is a new important subject. Based on dispersion properties, this paper filters out an appropriate guided-wave frequency for cofferdam rod testing and gives the reflected wave which can identify the bottom of cofferdam rod with simulation analysis. The adhesive quality of cofferdam rod can be quantified by calculating the attenuation coefficients, which realizes nondestructive testing.
Keywords:	Ultrasonic Guided Wave, Frequency Dispersion, Adhesive Quality, Simulation And Analysis
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	MODELING AND SIMULATION FOR THE TIME CONSTRAINT DAMAGE EFFICIENCY OF MLRS
Author:	SONG WEI-DONG, ZHAO CHENG-WANG, HUO JUN-XIU
Abstract:	Aiming at the shortcomings of the present damage efficiency model of multiple launch rocket system(MLRS) that ignores factors such as targets movement and viability while considers factors like shooting accuracy, target characteristics, and amount of ammunition only, a time-constraint damage efficiency model of MLRS was presented based on artillery firepower theory and firepower counterwork theory. The damage efficiency of MLRS in scenarios that containing time-constraint factors was computed based on the new model. Simulation results show the effectiveness of the model, and demonstrate that factors like targets maneuver and survival demand play an important role in damage efficiency of MLRS battalion and make the damage efficiency time sensitive.
Keywords:	Time-Constraint, Damage Efficiency, Shooting Accuracy, Ammunition Consumption, Target Maneuver
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	SPATIOTEMPORAL DYNAMICS OF NDVI AND LAND USE IN CHINA BASED ON REMOTE SENSING IMAGES
Author:	YAPING ZHANG, ZHENPING QIANG, XU CHEN
Abstract:	Using the fuzzy rule-based classification method, seventeen phases of NDVI (Normalized Difference Vegetation Index) images acquired from 1982 to 1998 were classified respectively based on NDVI and climate images. And then, spatiotemporal dynamics of NDVI and land use are described. Finally, this paper analyzes NDVI trends and their relationships with climate and human activity under the land cover scenario. The results indicate that at the national scale, the increases of monthly and seasonal NDVI correspond mainly to climate changes. But NDVI trends show a large spatial and temporal heterogeneity at the regional scale corresponding mainly to human activities, besides some sensitive areas with climate changes. Therefore it is necessary to establish a set of policies to ensure the ecological conservation and restoration, especially in ecological sensitivity areas.
Keywords:	NDVI, Spatiotemporal Dynamics, Time-Series
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	GRAY CORRELATION ANALYSIS ON INFLUENCING FACTORS OF POSTGRADUATES’ INNOVATIVE CAPACITY
Author:	GAO YUFENG, WANG JING，HE ZIDIAN
Abstract:	Cultivation of innovative spirit and capacity is the core of postgraduate education, serving also as the requirement of its development and nature. With the help of grey correlation analysis, this paper analyzes the correlative degrees of influencing factors in postgraduate education. Data collected indicate evidently that innovative capacity of postgraduates are closely related to factors like creativity of the supervisor, discipline construction, social demand for professional personnel, thesis writing and social practice skills, with correlative degrees being 0.881, 0.869, 0.829, 0.805 and 0.799 respectively. In contrast, factors like enrolling system and examinees’ intelligence show much less relevance with correlative degree being below 0.4.
Keywords:	Postgraduates(P), Innovation Capacity(IC), Influencing Factor(IF), Grey Correlation Analysis(GCA)
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	EXTENSION DATA MINING BASED ON EXTENSION SET AND ROUGH SET
Author:	ZHI-HANG TANG, BEI-PING TANG
Abstract:	Data mining has gained popularity in the database field recently, the gained knowledge is static because of the static nature of the database, and does not reflect the dynamic nature of knowledge. Extension data mining is a product combining Extenics with data mining, By using the theory and method of Extenics, it can mine the knowledge from database which is relative to solve contradictory problems. And the knowledge includes the Extension classification knowledge, conductive knowledge and other knowledge associated with transformation, which collectively called Extension knowledge. Its Application to enterprise brands segmentation will help the enterprises to gain their ends on the best way. Research result indicates that extension data mining can provide effective decide support for the Decision-making of enterprise.
Keywords:	Extension Data Mining (EDM), Attributes Reduction, Rough Set
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	THE METHOD OF SELECTING CRITICAL SUCCESSFUL FACTORS TO KNOWLEDGE MANAGEMENT AND ITS AUTOMATION
Author:	SHANG SHANSHAN
Abstract:	How to implement knowledge management is crucial to the enterprises, and different enterprise has different critical factors which also have different weight for different enterprise. The paper deeply analyzes all the important factors for the knowledge management implementation first. Then the paper proposes the invariance method to choose the critical factors and establishes the knowledge database of enterprise type to critical factors’ weights. Finally, according to knowledge database, an automated factor choosing mechanism is established based on the fuzzy theory and neural network.
Keywords:	Knowledge Management, Key Factors, Factor Choosing, Automation
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	A NEW INTEGRATION METHOD OF INFORMATION FOR TABLE TENNIS TRAINING FROM A DATA WAREHOUSE
Author:	JI PING, DING ZHIYI
Abstract:	A continuing challenge for Integration Information of Table Tennis Training (TTT) is to develop efficient data unit component part. Many see data unit integration as a potential solution; however, the quality of data integration of Table Tennis Training tends to outweigh the potential benefits. The quality of TTT data unit integration include establishing and maintaining a data warehouse of Table Tennis Training data unit, searching for applicable data unit to be integrated in a design, as well as adapting data unit toward a proper structure. In this paper, a new Data Feature Model (DFM) method is suggested here for data classification and integration of TTT which consists of K-Shortest Path (KSP) algorithm and Data Feature Model Method. We found that this new method gives a higher accuracy and precision in data selection and integration process of TTT compared to the existing formal methods.
Keywords:	Table Tennis Training, Data Unit, Integration Of Information, Data Feature Model
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	STUDY ON THE D/H RATIO OF CITY ROAD’S ENVIRONMENTAL EFFECT BASED ON BIM
Author:	ZHOU TAO, SHEN QING
Abstract:	Based on urban planning theory, the paper conducts a study on the D/H ratio of city road and applies a new technology BIM to make a quantitative objective analysis on the space size of road, differing from traditional subjective evaluation from the perspectives like psychology, physiology, social behavior and urban esthetics. Through the simulation and analysis on sunshine, ventilation under different D/H ratio, this paper discusses relationship among D/H, sunshine and ventilation and the change rule of sunshine and ventilation based on different D/H value, thus to get the best value range of D/H at planning level, and to demonstrate the traditional suggested value to sum up optimum value of D/H with more sufficient grounds. A new urban planning method is also involved in this paper
Keywords:	D/H, City Road, Simulation in Ecology
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	A LIGHT-WEIGHTED TRANSACTION PROCESSING SYSTEM BASED ON INTERNET MESSAGE ACCESS PROTOCOL
Author:	JIAN SU, CHONG ZHOU, WENYONG WENG
Abstract:	A few methods are proposed to build a light-weighted transaction processing system, which is based on the Internet Message Access Protocol (IMAP). The main idea underlying these methods is to use an email service as ubiquitous lightweight data storage and provide means to assure transaction processing in a new application environment. Two kinds of operation schemes based on advisory shared-exclusive locks and optimistic concurrency control are implemented respectively. Performance tests are also offered to help understanding the pros-and-cons of these two schemes in different application conditions. The light-weighted transaction processing system will be used as an on-line storage system for many on-line light-weighted applications which do not require a full-feature database system.
Keywords:	Transaction Processing, Internet Message Access Protocol (IMAP), Concurrency Control, Storage System
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text

Title:	QUANTUM INFORMATION DELAY SCHEME USING ORTHOGONAL PRODUCT STATES
Author:	XIAOYU LI, LIJU CHEN
Abstract:	In this paper we provide a quantum information delay scheme using orthogonal product states. By sharing orthogonal product states one person can give the other person some information which cannot be read until he or she lets the latter do. The fundamental Laws of quantum mechanics guarantee that the scheme is unconditionally secure. Our scheme is easy to carry out in practice because there are no entangled states or complex quantum operations needed. Moreover our scheme is robust against noise and possible attacks.
Keywords:	Information Delay, Quantum Cryptography, Orthogonal Product State, Non-locality, Security
Source:	Journal of Theoretical and Applied Information Technology March 2013 -- Vol. 49. No. 1 -- 2013
Full Text