Welcome to Journal of Theoretical and Applied Information Technology

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The primary objectives of this paper is to design, develop, implement and test a simplified switching inverter topology suitable for three phase induction motor drives. The simplified topology is presented and the principle of operation is described in detail. A modified time switching is used instead of the standard pulse width modulation techniques. The suggested motor controller increases the power delivered to the motor from a given dc voltage supply , reduces the losses due to high frequency switching and increases the efficiency of the motor by decreasing the distortions of voltages and currents at high powers. The results of the described approach indicate the efficiency and reliability in driving power switches

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Mobile Ad-hoc Network (MANET) are a new paradigm of wireless wearable devices enabling instantaneous person-to-person, person-to-machine or machine-to-person communications immediately and easily .In this paper an overview and history of MANET is given .We discuss the issues which should keep in mind for designing of MAC layer and Routing protocols at Network layer. All these issues can be taken into consideration for the improvement of MANET performance.
In mobile ad hoc networks, several interesting and difficult problems arises due to shared nature of the wireless medium, limited transmission power, limited transmission range, node mobility, and battery limitations, bandwidth limitation etc. The limited transmission range of wireless network coupled with the highly dynamic routing infrastructure need extra care. Mobility also create a lot of concerns. For communication, issues such as dynamic routing, efficient channel access and quality-of-service (QoS) support, bandwidth, synchronization, distributed nature, lack of central coordination should be considered. In this paper broadly we will discuss the above mentioned challenges at Network layer and MAC LAYER in mobile ad-hoc networks.

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This paper deals with modelling and digital simulation of three level inverter based Dynamic Voltage Restorer(DVR). The control of DVR that injects a voltage in series with a distribution feeder is presented. DVR is a power electronic controller that can protect sensitive loads from disturbances in supply system. It is observed that DVR can regulate the voltage at the load. Circuit model is developed and the same is used for simulation studies.

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Vast spread of sensitive loads in power systems results in increasing susceptibility to power quality problems, which makes fast detection and classification and localization algorithms a necessity. A new approach for power quality event detection using Wavelet Multi Resolution analysis (MRA)is presented in this paper.
For Classification, Wavelet transform is utilized to extract feature vectors for various PQ disturbances based on the Multi Resolution Analysis (MRA). These feature vectors then are applied to the Neural Network system. For the compensation of the Voltage Swell an Interline Unified Power Quality Conditioner(IUPQC) was employed. The complete was carried out using MATLAB/ Simulink.

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Up to now, many algorithms have been introduced for computing reconstruction in grayscale images. But the execution time is required by the known grayscale reconstruction algorithms make their practical use rather cumbersome on conventional computers. A new algorithm is introduced to bridge this gap and reconstruct the image in better way. This is based on the notion of regional maxima, regional minima, most significant value in the region and regional sorted Meddle values and uses different gradient algorithms constructed based on regional maxima, regional minima and regional sorted Meddle values for reconstruction. The existing study shows that the watershed by foreground markers is able to segment real and simple images containing few irregularities in a better way than the standard watershed segmentation algorithms. This method is based on markers and simple morphology, which allows a regularization of the watersheds. But it is not a flexible approach for further optimization parameters. The algorithm is able to segment or extract desired parts of only simple gray-scale images. To overcome these draw backs here new method is propose for real and multiple scale images by combining multiple gradient operators

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In this paper a novel method is proposed to provide more security for the key information with the combination of image compression and data encryption method. This method requires less memory space and fast transmission rate because of image compression technique is applied. Steganography plays an important role in information security. Since the rise of the Internet one of the most important factors of information technology and communication has been the security of information. It is the art of hiding the fact that communication is takes place, by hiding information in other information. Many different file formats can be used, but digital images are the most popular because of their frequency on the Internet. For hiding secret information in images, there exist a large variety of steganographic techniques some are more complex than others and all of them have respective strong and weak points. Many applications have different requirements of the steganography technique used. Some applications may use absolute invisibility of the secret information, but others require a larger secret message to be hidden. This method has been implemented and tested on varies images and data. It provides better security for encrypted data and no distortion in the image quality.

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In this article we present geometrical Parameter algorithms for ear Biometrics by representing the Ear image as contours, feature extraction and recognition. The proposed algorithms were developed for ear biometrics, but they can be applied in other contour image processing applications. Firstly we present mathematical and algorithmic foundations of geometrical feature extraction methods. We also discuss their application and the achieved results for ear contour image analysis and recognition. The human ear is a perfect source of data for passive person identification in many applications. In the growing need for security in various public places, ear biometrics seems to be a good solution, since ears are visible and their images can be easily taken, even without the examined person’s knowledge. The robust feature extraction method can be applied to determine personality of individuals. The growing interest in ear biometrics can be evidenced by many publications over the last few years. More importantly research groups developed different approaches to a problem of feature selection and extraction for ear biometrics.

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Information transfers through web has plays a significant role in the utilization of its resources. The major parts that involve in information transfer recently are through sharing and publishing weblogs. Weblogs that normally published in chronological order by bloggers mostly attracts the frequent returned blogs readers unless it is shared in a public new feeds or perhaps reach from the other platforms. Although RSS aggregators able to aggregate the latest update in timely manner, weblogs that was written in chronological order by multiple bloggers have caused the conflicting of result aggregated from different weblogs ended up an irrelevant or unrelated lists of weblogs collection. It is refers mainly due to the ambiguity of synonym (different but similar meaning) and polysemous (similar but multiple meaning) words used by different bloggers. The orientation of this paper is at first to review the techniques used on the weblogs search options, or any other available assistants to reach a weblog over the internet. Continue with an explanation on the ambiguity problem among the weblogs. Next, identify if any RSS aggregator comes with a solution. Besides reviewing the available techniques on relevancy measurement, an experiment is performed to test if user assisting in keyword search able to improve the aggregated results to a more relevant of collection. Subsequently, the result concluded a satisfactory list of weblogs collected after benchmarking the list of weblogs collected from Feed Demon. Paper ends with the future works.

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Since last two decades offshore outsourcing gaining fast momentum and now this new evolution of business process has achieved its maturity. Standardization of manufacturing sector is almost matured and now this sector is on the automation mode. Western firms in the service sector are very much eager to standardize their process and for multiple reasons, they are seeking external partner to achieve their goal. Modularity is the basic principle of standardization because standardization can not deliver any value if it is not flexible and agile. Modular, flexible and agile standardized systems can lead us towards the next stage of business process evolution which is, ‘automation’. Automation in service sector is envisaged since long but now it seems a reality due to the rapid advances in information technology. It seems very encouraging that the western firms are heading towards right direction in achieving competitiveness but question remains, if this achieved competency is sustainable? Is the achieved cost saving in short term, in any way over shadowing the long term and sustainable benefits? How well these western firms are prepared to face the turbulent business environment with out external help? This research will try to explore all the relevant venues to find the real situation on the ground.
This study is aimed to focus on the knowledge transfer process between Indian service providers and western service consumers. In short and mid-term, probably companies in western countries are achieving competitive advantage by off-shoring their IS / IT activities but this research will focus on long-term strategies. Will the service consumers continue to depend on service providers or will they adopt strategies to enhance their own capabilities through knowledge exchange? This research will try to uncover the short-term, mid-term and long-term strategies concerning IS off-shoring practices, adopted by the service consumer organizations in western countries. This research will further dig-in to evaluate consistency of those adopted strategies to economic theories. This research will be conducted in two phases. The first phase will be an exploratory and qualitative research. Data will be collected through the interviews of executives from both organizations: service consumer and service provider. The second phase will be a confirmatory and quantitative research. Data will be collected from the executives of service consumer and service provider through survey. This collected data will be matched by the previous qualitative data and finally after analyzing those data a conclusion can be derived.

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SARS is a respiratory disease caused by corona virus, it is produced the flu like symptoms and severe bronchial constriction ,alveoli inflammation it’s leads to death fever, myalgia, lethargy, gastrointestinal symptoms, cough, sore throat and other non-specific symptoms. , The rapid transmission and high mortality rate made SARS a global threat for which no efficacious therapy was available and empirical strategies had to be used to treat the patients. New insights into the field of the SARS-CoV genome structure and pathogenesis revealed novel potential anti-Corona virus targets. Several proteins encoded by the SARS-CoV could be considered as targets for therapeutic intervention.pharmacoinformatic approach of SARS gave new opportunities for the development of therapeutics, an extensive analysis of the SARS proteins including modeling of its structure may prove useful in designing a drug for SARS treatment. Further comprehensive work on this protein will leads to a new milestone in SARS research

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Peristaltic pumping of a fluid of variable viscosity in a non-uniform tube / channel lined with porous material is investigated. The flow in the tube is governed by Navier- Stokes equation and the permeable boundary is described by Darcy law. It is observed that larger the permeability of the porous medium, greater the pressure rise against which the pump works, so the increase of permeability of the wall causes less frictional force and also observed that the frictional force shows opposite behaviour to that of pressure rise in peristalsis.