Navegando por Autor "FREITAS, Carlos Alberto Oliveira de"

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    Algoritmo Memético Cultural para Otimização de Problemas de Variáveis Reais
    (Universidade Federal do Pará, 2019) FREITAS, Carlos Alberto Oliveira de; OLIVEIRA, Roberto Célio Limão de; SILVA, Deam James Azevedo da
    Technology has made great strides in recent years, but computing resources for certain applications need optimization so that the costs involved in solving some problems are not high. There is a very broad area of research for the development of efficient algorithms for multimodal optimization problems. This thesis analyzes the behavior of the Cultural Algorithm, with populations evolved by the Genetic Algorithm, when local search heuristics are used: Tabu Search, Beam Search, Climbing, and Simulated Annealing. One of the contributions of this work was the updating of the topographic knowledge of the cultural algorithm by the use of the triangular area defined by the best results found in the local search. For the analysis, a Memetic Algorithm was developed by hybridizing the Cultural Algorithm with the local search heuristics mentioned, applied one at a time. The evaluations were carried out using multimodal benchmark functions and real constrained optimization problems in engineering areas. The results showed that the developed Cultural Memetic Algorithm presented better results compared to those available in the researched scientific literature.
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    Estratégias para logística de suprimento de KITs de produtos de informática em uma empresa do Pólo Industrial de Manaus - PIM
    (INSTITUTO DE TECNOLOGIA, 2010) FREITAS, Carlos Alberto Oliveira de; OLIVEIRA, Edson Farias de; OLIVEIRA, Haroldo Melo de; SOUZA, João Carlos Rodrigues de; MAGALHÃES, Edilson Marques
    The article examines logistics strategies for supplying IT product kits in the Manaus Industrial Hub (PIM), focusing on transport modal choices (maritime, multimodal, and air) amid regional challenges and the 2008 financial crisis. The studied company initially adopted multimodal transport (Sea/Air) but switched to air freight due to customs delays and material shortages, ensuring speed despite higher costs. The study evaluates service dimensions (speed, consistency, capability, availability, and frequency) and underscores the role of logistics planning in maintaining PIM’s competitiveness.