Radio-over-Fiber (RoF) systems which act as backbone networks are very promising means of reducing overall costs of 60 GHz WPANs, as well leading to networks with limited intercellular interference. The main objective of this paper is to compare the performance of two systems that generate Optical Single Side Band (OSSB) OFDM signals at the mm-wave band with and without optical up-conversion. B...

Let S be a connected and simply connected unimodular solvable Lie group, K a connected compact group acting on S as automorphisms. We call the pair (K;S) a Gelfand pair if the Banach -algebra L 1 (KnKnS=K) of allK-biinvariant integrable functions on K n S is commutative. The assumption that (K;S) is a Gelfand pair prescribes the structure of S. For example, if (K;S) is a Gelfand pair, then S is...

Very Preliminary and Incomplete. In this paper, I present and estimate a flexible partial equilibrium on-the-job search model with the goal of better understanding wage dynamics. A very recent literature uses search models to understand the dynamics that govern the evolution of wages. This literature tries to solve the problem of lack of structural interpretation that affects univariate models ...

We introduce and study anisotropic versions of the total variation based noiseremoval model developed by Rudin, Osher, and Fatemi (ROF) in [4]. Recall that the goal of the original ROF model is to remove noise from a corrupted digital image without blurring object boundaries (i.e. “edges”). If the corrupted image is denoted f(x), one tries to recover the clean image as the minimizer of the foll...

In summary it can be stated that in Bx' the sy)+, Bx+, fu+ loci as well as x, a locus to the right of fu+, are duplicated'. The classical example of multiple allelism is the series of eye-color mutants at the white (w) locus in Drosophila melanogaster. The altemative interpretation of this series, namely, that it is made up of "pseudoalleles," or closely linked genes with similar effects, has u...

In this paper 1 we present a novel no-reference (NR) metric to measure block impairment (blockiness) in JPEGcoded images. The proposed metric integrates several key human visual sensitivity factors such as edge amplitude, edge length, background activity and background luminance to evaluate the effect of block edge impairment on perceived image quality. The subjective test results of our metric...

A randomized crossover trial of a new form of pediatric rehabilitation was conducted with 18 children with hemiparesis. Half were randomly assigned to receive pediatric constraint-induced therapy involving constraint of the functional upper extremity and intensive therapy with the hemiparetic upper extremity. Controls received conventional physical and occupational therapy and then were crossed...

The objective of this research proposal is to see how components can be used to map information from one system to an other. To do this a number of different problems must be addressed, and three groups of problems can be found. The first is how components work and how the other problems can benefit from that. The second is mapping, both syntactically and semantically. What information is neede...

Métodos de estimativas como o Pontos por Casos de Uso (PCU) calibram o tamanho do software baseado em características técnicas e ambientais associadas aos projetos e às equipes de desenvolvimento. Este artigo analisa os resultados de uma pesquisa realizada com profissionais da área de software, utilizando o método Processo Analítico Hierárquico (AHP), sobre a relevância de cada uma das caracter...

We have developed some low-cost predistortion circuits to compensate secondand third-order laser distortions in multiservice radio-over-fiber industrial systems. Depending on the predistorter configuration implemented, average reductions of 10–15 dB and of 8–10 dB have been observed in the laser secondand third-order distortions, respectively, within the cellular bands relevant to the European ...