International Journal of Computer and Applications

The work is giving estimations of the discrepancy between solutions of the initial and the homogenized problems for a one{dimensional second order elliptic operators with random coeecients satisfying strong or uniform mixing conditions. We obtain several sharp estimates in terms of the corresponding mixing coeecient. Abstract. In the theory of homogenisation it is of particular interest to determine the classes of problems which are stable on taking the homogenisation limits. A notable situation where the limit enlarges the class of original problems is known as memory (nonlocal) eeects. A number of results in that direction has been obtained for linear problems. Tartar (1990) innitiated the study of the eeective equation corresponding to nonlinear equation: @ t u n + a n u 2 n = f: Signiicant progress has been hampered by the complexity of required computations needed in order to obtain the terms in power{series expansion. We propose a method which overcomes that diiculty by introducing graphs representing the domain of integration of the integrals in each term. The graphs are relatively simple, it is easy to calculate with them and they give us a clear image of the form of each term. The method allows us to discuss the form of the eeective equation and the convergence of power{series expansions. The feasibility of our method for other types of nonlinearities will be discussed as well.

Applied Mathematics and Computation

In the modern age an enterprise spans from one continents to other to localize their service and to be close to the customer. This brings enormous challenge to the security architecture. As organizations need to distribute sensitive information to authorized parties over the network, they have increasingly been adopting biometrics as a necessary component for authentication. Biometrics is based on the physical characteristics such as finger print, retina scan, voice recognition, facial recognition, vascular recognition. Over the last couple of years we have been working on using biometric based integration to advance the security model of the existing J2EE/Java EE based platform and to provide solution to the open source community. These security differ from traditional infrastructure security in terms of addressing the end-to-end security requirements of an application by mitigating security risks at the functional and deployment level, securing business objects and data across logical tiers, securing communications, and protecting the application from unauthorized internal and external threats and vulnerabilities, by biometrically signing it.

Biometrics for Global Web Authentication: an Open Source Java/J2EE-Based Approach

Web service is a responsible for the machines to communicate with each other in World Wide Web. Most of the Web services in real world application developed were to work on PC Platforms, not in mobile. Web services developed on Mobile platforms have to overcome the challenges in this platform. Mobile based web services provide interoperability. In today's development of technology, Hand held devices are ruling the world, so there is a need of mobile based services. The security in terms of mobile phones is the issue due to misplacement of the device or in terms of theft. Web services used in the mobile devices should be more secured to avoid the loss of data and unauthorized access of the web services. In the mobile devices accessing web services using a username and password combination leads to unauthorized access. To avoid this issue, Instead of this traditional combination, username along with one of the Biometric is used. In the Proposed system, fingerprint is used as a Biometric. Fingerprint authentication system provides more secured Web Service Application as fingerprint implies users own identity.

Biometric Based Secured Authentication in Mobile Web Services

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Biometric Based Secured Authentication in Mobile Web Services