Dosimetria 3D do Iodo-131: Estudo com Gel MAGIC-f e Código de Simulação Monte Carlo PENELOPE

Estudo e Implementação de Algoritmos de Roteamento

Além de ser clara a aplicabilidade dessas técnicas para o problema de motoristas, correios ou serviços de emergência, existe uma motivação muito mais importante para se começar a estudá-los: a determinação dos menores caminhos aparece constante e consistentemente como um subproblema de problemas mais complexos em grafos. 2.1 Algoritmo de Dijkstra: Entre um dado ponto e os demais No algoritmo de...

Parallelization of the Penelope Monte Carlo Particle Transport Simulation Package

We have parallelized the PENELOPE Monte Carlo particle transport simulation package [1]. The motivation is to increase efficiency of Monte Carlo simulations for medical applications. Our parallelization is based on the standard MPI message passing interface. The parallel code is especially suitable for a distributed memory environment, and has been run on up to 256 processors on the Indiana Uni...

Improved electron transport mechanics in the PENELOPE Monte-Carlo model

We describe a new model of electron transport mechanics, the method by which an electron is transported geometrically in an in®nite medium as a function of pathlength, s, the accumulated elastic multiple-scattering angular de ̄ection characterized by H…s†, the polar scattering angle, and U, a random azimuthal angle. This model requires only one sample of the multiple-scattering angle yet it repr...

Applications to Radiotherapy Using Three Different Dosimetric Tools: MAGIC-f Gel, PENELOPE Simulation Code and Treatment Planning System

Escolhas Estratégicas e Estilo Cognitivo: um Estudo com Pequenas Empresas

This study describes the cognitive structure adopted by small firms’ owners and managers in the strategic management of their businesses. The influence of respondents’ cognitive styles over strategic decisions was explored, as well as the role exerted by environmental turbulence on strategic choices. A careful exploration of Miles and Snow’s (1978) taxonomy of strategic types and Kirton’s (1976...