A wide variety of matrix transforms have been used for compression of image and video data. Transforms have also been used for motion estimation and quantization. One such transform is the singular-value decomposition (SVD) that relies on low rank approximations of the matrix for computational and storage efficiency. In this study, we describe the use of a variant of SVD in image and video comp...

Introduction. In 1960 a set of axioms for cooperative games without side payments was suggested by Aumann and Peleg [l] which provides a neat generalization of the classical von Neumann-Morgenstern «-person theory [S]. In subsequent papers [2], [3], and [4], many results parallel to the classical theory have been proven in this new framework. The purpose of this note is to re-examine the axioms...

Let C be a nontrivial cone and Y be a set in the «-dimensional Euclidean space. Denote by E( Y|C) the set of all efficient points of X with respect to C. It will be proven that under some adequate assumptions E(Y|C) is homeomorphic to a simplex while n = 2, and for n > 2 it is a contractible set. Furthermore, the set of all weak efficient points of X with respect to C is arcwise connected and i...

A super-resolution image reconstruction algorithm using natural neighbor interpolation is proposed and its performance is evaluated. The algorithm is divided into two stages: image registration and the reconstruction of a high-resolution color image. In the first stage, as shifts between images are usually unknown, the algorithm computes an approximation of these displacements by solving the sy...

The kinetics solid-liquid extraction of phenolics from wild olive leaves was elaborated using different mathematical models (Peleg, second order, Elovich, and power law model). As solvents, methanol, ethanol, ethanol:water 1:1, n-propanol, isopropanol and ethyl acetate were used. The second order model best described the solvent extraction process, followed by the Elovich model. The most effect...

The main aim of this work was to study the kinetics of the extraction of β-carotene by solvent (ethanol) extraction from carrots dried at 50oC in an oven. The moisture content after drying was 11±1.5% (dry weight basis). Extraction time was 5 hours and extraction process was carried out at 30oC. The ratio of Carrot (gm): ethanol (ml) of 1:60 was maintained throughout the extraction process. The...

A party is dominant if there is a majority coalition to which that party belongs such that it affords this party more possibilities to form an alternative winning coalition than any of the other members of the coalition (see Peleg [1980, 1981]). In this article I present empirical evidence showing that an allocation of seats in a parliament is biased toward the high frequency occurrence of a do...

Given some arbitrary distribution D over {0, 1}n and arbitrary target function c∗, the problem of agnostic learning of disjunctions is to achieve an error rate comparable to the error OPTdisj of the best disjunction with respect to (D, c∗). Achieving error O(n · OPTdisj) + ǫ is trivial, and Winnow [13] achieves error O(r ·OPTdisj) + ǫ, where r is the number of relevant variables in the best dis...

In this paper we show that every chordal graph with n vertices and m edges admits an additive 4-spanner with at most 2n−2 edges and an additive 3-spanner with at most O(n · logn) edges. This significantly improves results of Peleg and Schäffer from [Graph Spanners, J. Graph Theory, 13(1989), 99-116]. Our spanners are additive and easier to construct. An additive 4-spanner can be constructed in ...

Estudiar el comportamiento de sorción humedad y propiedades termodinámicas alimentos deshidratados proporciona información importante para diseño procesos secado almacenamiento que aseguren la estabilidad los productos. El propósito este trabajo fue obtener las isotermas dinámicas humedad, modelar su determinar café soluble. Las fueron obtenidas por método dinámico punto roció (DDI) a 20, 25, 3...