Ashok Rao,C.I.T |
Noushath S.,Oman Ministry of Education
Computer Science Review | Year: 2010
Studying the inherently high-dimensional nature of the data in a lower dimensional manifold has become common in recent years. This is generally known as dimensionality reduction. A very interesting strategy for dimensionality reduction is what is known as subspace analysis. Beginning with the Eigenface method, face recognition and in general computer vision has witnessed a growing interest in algorithms that capitalize on this idea and an ample number of such efficient algorithms have been proposed. These algorithms mainly differ in the kind of projection method used (linear or non-linear) or in the criterion employed for classification. The objective of this paper is to provide a comprehensive performance evaluation of about twenty five different subspace algorithms under several important real time test conditions. For this purpose, we have considered the performance of these algorithms on data taken from four standard face and object databases namely ORL, Yale, FERET and the COIL-20 object database. This paper also presents some theoretical aspects of the algorithm and the analysis of the simulations carried out. © 2009 Elsevier Inc. All rights reserved.
Prince Williams D.R.,Oman Ministry of Education
Turkish Journal of Electrical Engineering and Computer Sciences | Year: 2013
Determining the software quality and release time of the software is an important role of software reliability. Software reliability growth models (SRGMs) are applications of software reliability. The change-point is defined as the prominent change in the software testing time, in connection with the quality of a software error occurrence or error-detection phenomenon. As a result, the software reliability growth process, based on the change-point, affects the precision of the software reliability prediction, based on the SRGMs. To find the accurate total expected delivery cost with a suitable warranty period of the software system, a new cost model for the software system with the warranty and changepoint phenomenon is proposed in this paper. The entire expected delivery cost and the reliability of the software system is calculated using the change-point SRGM. The optimal release time is calculated by reducing the overall estimated delivery cost for various desired reliability levels. Based on the proposed warranty cost model and the reliability of the software system, we have derived some optimal release policies. Numerical illustrations and interconnected discussed data are itemized. From the testing outcome, we get software release policies that provide a comprehensive analysis of software based on the total expected delivery cost with a suitable warranty period, desired level of reliability, and changepoint. Moreover, these policies will be helpful for project managers to decide where to stop the testing for customer release at the exact time with a suitable warranty period. © Tübi·tak.
Al Hosni S.S.R.,Oman Ministry of Education
International Journal of Applied Linguistics and English Literature | Year: 2014
This study aimed at investigating EFL learners’ frequency of negotiation of meaning when performing focused and unfocused communication tasks. The sample consists of thirty learners divided into ten groups. Three research instruments were used to collect data; communication tasks, field notes and interviews. Data analysis revealed that there is no significant difference in the frequency of negotiation of meaning between the two task types. This is due to the fact that, learners performed both task types as unfocused tasks and they were able to use some communication strategies to keep communication flowing and to go round the target structure. Amazingly, despite the existence of the trigger of negotiation, the indicator of misunderstanding, an important negotiation phase, was absent in many cases from the conversations in both task types. Subsequently, the research findings suggest providing learners with opportunities that urge them to perform as language users rather than language learners. © Australian International Academic Centre.
Annapurani K.,SRM University |
Sadiq M.A.K.,Oman Ministry of Education |
Malathy C.,SRM University
Expert Systems with Applications | Year: 2015
In the current scenario to access the data securely from wireless network, e-commerce and internet have become a great concern. As the technologies become commercialized in high markets growth, there is a need for effective and secure implementation to authenticate the identity of the people. Several biometric techniques that exploit physiological and behavioral traits of people have been developed for verification and identification of the individuals to make the system more reliable and secure. In this paper a unique method is used to extract the tragus feature of the ear. The proposed method used is an enhanced edge detection method. A line is drawn connecting the maximum coordinate, midpoint and the minimum coordinate. The mid region of this line gives the tragus of the ear. The ear feature tragus is taken because it is almost free from occlusions. In order to develop an efficient ear authentication system the feature level fusion is applied. The shape of the ear is also extracted. Then the tragus and the shape of the ear are combined together to form the fused template. The authentication rate of the system with the features of tragus, shape of the ear and the fused template is calculated using the Hamming distance technique and Euclidean distance method. The experimental result is carried out on two databases of IIT Delhi ear database and Mathematical Analysis of Images (AMI) ear database including occlusion. The proposed system is to prove that the accuracy of the ear biometric authentication system using Hamming distance technique in fused feature is better than the individual feature of tragus and the ear shape. When a single feature tragus is considered tragus is better than the ear shape as it is a unique feature of the ear. © 2014 Elsevier Ltd. All rights reserved.
White G.,Oman Ministry of Education
Sultan Qaboos University Medical Journal | Year: 2012
Conspicuous gaps demonstrate a collective global failure in the world's health systems as they struggle to manage complex and expensive demands. The Lancet Commission recently took a global interdisciplinary perspective and systematic approach to consider alliances between education for health professionals and health systems in order to address these problems. They concluded that positive outcomes require new instructional and institutional designs. Findings from the Lancet Commission have implications for the development of health professional education in Oman, particularly with regard to the call for integrative and transformative education for the next generation of health professionals. Education in the Omani health sector must keep up with increasing challenges in both the health and education sectors.