Welcome to Journal of Theoretical and Applied Information Technology

Author:

Source:

Abstract

In the past two decades, the technique of image processing has made its way into every aspect of today�s tech-savvy society. Its applications encompass a wide variety of specialized disciplines including medical imaging, machine vision, remote sensing and astronomy. Personal images captured by various digital cameras can easily be manipulated by a variety of dedicated image processing algorithms .Image restoration can be described as an important part of image processing technique. Image restoration has proved to be an active field of research in the present days. The basic objective is to enhance the quality of an image by removing defects and make it look pleasing. In this chapter, we propose an image restoration algorithm in MATLAB which is based on the neighbourhood property of a pixel. We focus on a certain iterative process to carry out restoration. One such method described in this regard is the Nearest Neighbourhood Method.

Image restoration, image processing, good pixel, noisy pixel, image degradation

 Full Text

Author:

Source:

Abstract

The primary goal of this paper is to identify the elements involved in quality assessment of website structure. Always quality of website structure is based on its navigability, average number of clicks and structural complexity. The web tool PowerMapper is used to establish the sitemap for the website, path length metric is used to evaluate average number of clicks to get desired web page and web site structural complexity is determined with cyclomatic complexity. The quality of web site structure is measured in 10-point scale and scale is formulated by considering various levels of website tree structure. The status of web site structure is determined in 10-point scale and the value suggests the improvement of the site structure

sitemap, path length, navigability, cyclomatic complexity, web site structure

Author:

Source:

Abstract

Software reuse has become a topic of much interest in the software community due to its potential benefits, which include increased product quality and decreased product cost and schedule. The most substantial benefits derive from a product line approach, where a common set of reusable software assets act as a base for subsequent similar products in a given functional domain. The upfront investments required for software reuse are considerable, and need to be duly considered prior to attempting a software reuse initiative

reuse, components, product cost, quality

Author:

Source:

Abstract

The Universal Mobile Telecommunications System (UMTS) offers panoply of 3G services that require a high protection of the transmitted information. In the present paper, we are interested by network access security, especially the protection of the data integrity and the provisioning of data encryption. A special interest will be given to the second set of 3GPP cryptographic algorithms UEA2/UIA2 based on the SNOW 3G algorithm. This set was, in fact, a subject only of few research works in comparison with the first one based on KASUMI algorithm. A closer look is taken at both the encryption algorithm UEA2 and the integrity algorithm UIA2 operations. The different operation modes of the algorithm SNOW 3G will be presented as well. A study of the time and space complexity of three algorithms has been carried out

UMTS, Encryption, Integrity, SNOW 3G, UEA2, UIA2, Time complexity, Space complexity

Author:

Source:

Abstract

Next generation wireless network is foreseen as the combination of heterogeneous wireless networks capable of providing enhanced services to mobile users. Vertical handoff is a crucial issue in providing service to mobile users, in a heterogeneous network. To maintain continuous service during vertical handoff period, the handoff procedure should consider the noise and interference in the networks. In this article, we have proposed an algorithm based on the received signal to inference plus noise ratio (SINR) for handoff between GPRS and WiMAX networks. Here SINR from WiMAX network is converted to the equivalent SINR of the GPRS network and vice-versa, so that the handoff algorithm can have the knowledge of achievable bandwidths in both the networks. This helps in taking a handoff decision. Simulation study on handoff between GPRS and WiMAX networks using QualNet showed that consideration of received SINR during the vertical handoff period maintains better system throughput

Vertical handoff, SINR, GPRS, WiMAX

Author:

Source:

Abstract

Test scheduling is crucially important for optimal SoC test automation in allocating the limited available test resources. To assign test resource, this paper introduces a fuzzy based engine. Test pipelining is used to minimize the time of testing the SoC. The power consumption during the test process should be under control, without exceeding the maximal power and damaging the whole systems. Concurrent behaviors are due to the adept of process algebra .Based on the procedure, the parallel test actions are mapped into concurrent process to outline the test scheduling scheme for SoC core concurrent test. Power Swarm optimization based optimum renders solution to the multiple constraints like test power dissipation, test resources and test priorities prevail in the algorithm for SoC test scheduling based on process algebra

System-on-Chip, Test Access Mechanism, Process Algebra, Fuzzy Logic

Author:

Source:

Abstract

This paper presents the design of optimal fuzzy logic controller (FLC-ACO) � controlled shunt active power filter (SAPF) for harmonics compensation which is injected by nonlinear loads, such as rectifier equipment used in telecommunication system, power suppliers, domestic appliances, ect. Firstly, the controller designed according to Fuzzy logic rules is such that the system is fundamentally robust. In the second case, the optimal adjustment of the membership functions and normalization gains are realized by using Ant Colony Optimization. Simulations results show the best dynamic behaviour and performance control compared with traditional Fuzzy controller, as well as effective in reducing harmonic

Shunt active power filter, Harmonic compensation, PI controller, Ant colony optimization

Author:

Source:

Abstract

This paper reports on the analysis of EHT (Extra High Tension) transmission line protection using distance relay settings of TYPE: RAZOA and TYPE: REL-100 (MAKE: ABB COMPANY). The calculations of relay settings for the distance schemes have also been performed, using MATLAB program

Power system; Relay setting; RAZOA; REL-100; Matlab

Author:

Source:

Abstract

Quick changes in requirements and opportunities in world market needs different levels of cross-organizational collaboration for integrating distributed information systems, information sharing and coordination of organizational processes. Nowadays, Web Services are the most common technology to meet these requirements. Web Services Choreography Description Language (WS-CDL), a World Wide Web Consortium (W3C) choreography-based standard, describes how a number of services coordinate to obtain the goal of such collaboration. Only a few WS-CDL based executive models have been proposed so far. Software Agents are other alternatives for solving Inter-Organization coordination problems. This paper presents an execution framework for WS-CDL using software agents. This framework provides the Web Services collaboration layer based on choreography model and automatically of agent generation of WS CDL. It also follows Web Services stack and native features of agents and Web Services

Web Services (WS), Choreography, Multi-Agent System (MAS), WS-Choreography Description Language (WS-CDL), Java Agent DEvelopment framework (JADE)

Author:

Source:

Abstract

Handwritten recognition is a very active research domain that led to several works in the literature for the Latin Writing. The current systems tendency is oriented toward the classifiers combination and the integration of multiple information sources.
In this paper, we describe two approaches for Arabic handwritten recognition using optimized Multiple classifier system MCS . The first rests on cooperation and selection of feature set in MCS studying the effect of fusion methods on global system performance The second one used Diversity measures and individual accuracy classifier for selecting the best set of classifier; its chooses among the classifier set the one with the best performance and adds it to the selected classifiers subset. The performance in our approach is calculated using three diversity measures based on correlation between errors. On two database sets using 10 different classifiers, we then test the effect of: the criterion to be optimized (diversity measures), and fusion methods (voting, weighted voting and Behavior Knowledge Space). The experimental results presented are encouraging and open other perspectives in the domain of classifiers selection especially speaking for Arabic Handwritten word recognition

Arabic Handwritten word recognition, Classifiers set selection, Combination methods, Diversity measures, features extraction, BKS (behavior knowledge space)