ABSTARCT: Communication over the internet is facing some problem such as data security, copyright control, data size capacity, authentication etc. Here we introduce a novel scheme for separable reversible data hiding in encrypted domain in which we use image as a cover medium. This paper illustrates the various objectives of implementing separable reversible data hiding technique. The separable...

This thesis considers variable metrics in the context of stochastic, function-value free optimization in continuous search spaces. We argue that the choice of a (variable) metric or equivalently the choice of a coordinate system can be decoupled from the underlying optimization procedure. An adaptive encoding procedure is presented, that is in principle applicable to any optimization procedure,...

let c be a field of subsets of a set i. also, let     1 i i be a non-decreasing positivesequence of real numbers such that 1, 1 0 1   i  and    11 i i . in this paper we prove thatbv of all the games of -bounded variation on c is a non-separable and norm dual banach space of thespace of simple games on c . we use this fact to establish the existence of a linear mapping t from...

Work on Wavelet based coding of images [1] has relied almost completely on the use of the separable, ie. Tensor Wavelet Transform. This method treats images as onedimensional rows and columns. Treating images in a truely multidimensional way allows for much greater flexibility in the manipulation of the information. The quincunx lattice is a natural choice for applying non-separable filtering b...

We consider the separable quadratic multi-knapsack problem (QMKP) which consists in maximizing a concave separable quadratic integer function subject to m linear capacity constraints. The aim of this paper is to develop an effective method to compute an upper bound for (QMKP) from a surrogate relaxation originally proposed in Djerdjour et al. (1988). The quality of three other upper bounds for...

Whether a quantum state is entangled or not represents a very important question in quantum-information theory. Such knowledge reveals whether one can take advantage of the non-local properties of the state in quantum protocols such as quantum teleportation [1] and quantum cryptography [2]. This issue has been dealt with by many authors in recent years primarily in qubit systems where the Peres...