Research ArticleOpen accessIn the abstractInverse Correlations for Multiple Time Series and Gaussian Random Fields and Measures of Their Linear DeterminismR.J. Bhansali, L. IppolitiFor a discrete-time vector linear stationary process, {X(t)}, admitting forward and backward autoregressive representations, the variance matrix of an optimal linear interpolator of X(t), based on a knowledge of {X(t-j), j≠0}, is known to be given by Ri(0)-1 where Ri(0) denotes the inverse variance of the process. Let A=Is-1Ri(0)ˉ1R(0)ˉ1, where R(0) denotes the variance matrix of {X(t)} and Is an … …Journal of Mathematics and Statistics, Vol. 1, Issue 4 · 31 Dec 2005 · 6,424 accessesView PDFCite
Research ArticleOpen accessIn the abstractAuthentication Model Based Bluetooth-enabled Mobile PhoneRania Abdelhameed, Sabira Khatun, Borhanuddin Mohd Ali, Abdul Rahman RamliAuthentication is a mechanism to establish proof of identities, the authentication process ensure that who a particular user is. Current PC, laptop user authentication systems are always done once and hold until it explicitly revoked by the user, or asking the user to frequently reestablish his identity which encouraging him to disable authentication. Zero-Interaction Authentication (ZIA) provides solution to this … …Journal of Computer Science, Vol. 1, Issue 2 · 30 Jun 2005 · 7,471 accessesView PDFCite
Research ArticleOpen accessIn the abstractNew Approaches for Providing Validity in the Web-Based TestsCetin SemerciIn this study, "New Approaches for Providing Validity in Web-based Tests" was investigated. To provide validity in web-based tests seem as a big problem. The survey method is used in this study. In this context, information on current and new approaches for providing validity of Internet based measurements is requested from relevant universities and organizations. The population of the study … …Journal of Social Sciences, Vol. 1, Issue 1 · 31 Mar 2005 · 6,739 accessesView PDFCite