Public administration is responsible for managing public resources and offering various types of services to the population. Therefore, ensure that maintenance state bodies carried out in a manner, both acquisition goods contracting services, it necessary carry bidding processes follow constitutional principles. In this way, use Multi-Criteria Decision Analysis (MCDA) methods can help decision makers solve selection problems institutions. context, objective paper select, from pre-defined...

In real optimization problems it is generally desirable to optimize more than one performance criterion (or objective) at the same time. The goal of multiobjective combinatorial (MOCO) simultaneously r > 1 objectives. As in single-objective case, use heuristic/metaheuristic techniques seems be most promising approach MOCO because their efficiency, generality and relative simplicity implementation. this work, we develop algorithms based on Greedy Randomized Adaptive Search Procedure (GRASP)...

Goal: to propose a hybrid method, combining AHP and Fuzzy, for project portfolio management.
 Originality/value: this paper meets the positive characteristics of both methods, adequately weighing criteria contemplating process subjectivity. Limitations that exist in such as maximum number alternatives difficulty inserting new at end process, are overcome.
 Design/methodology/approach: is applied determining weights fuzzy used compare each criterion.
 Results: results show...

Fruit flesh gelling in papaya fruits is a typical post-harvest disorder. The aspect of the fruit changes to more rigid and translucent, also turns darker. It occurs close seeds therefore external appearance not changed. No information about this disorder available literature. For metabolomic investigation disorder, juice affected non-affected was compared by Nuclear Magnetic Resonance (NMR). Also comparison made with which initiated degradation process. Analysis data Principle Component...

Goal: Propose hybrid heuristics combining VNS and Tabu Search (TS) for adding adaptability to University Course Timetabling Problem (UCTTP) resolution.
 Design / Methodology Approach: TS metaheuristics were used isolated in combination order verify which shape acquired the best solutions. Those verified using constraints found at two undergraduate courses of Federal Fluminense University. Effectiveness is by comparing them with solutions manually elaborated course coordinators.
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Throughout their production life oil wells have the potential to undergo workover interventions with one of possible objectives maintain healthy levels. In mature fields, generally in a declining stage, increases need evaluations and monitoring flow levels productive fluids, indicate those who are producing below potential. this context, study case was conducted analyze operational parameters associated well fluids by applying data science tools, considering premise all intact terms safety...

A Previdência Social é uma política pública que visa garantir benefícios monetários aos trabalhadores e suas famílias em momentos de incapacidade laboral, velhice ou morte. Contudo, o notório aumento do desequilíbrio financeiro-atuarial dos institutos previdência pode impedi-los cumprir obrigações por falta recursos. Tendo vista os Regimes Próprios (RPPS) aplicam seu capital fundos investimento para elevar seus ativos financeiros, a busca ferramentas possibilitem análise seleção exibem bons...

A phylogeny is a tree that relates taxonomic units based on their similarity over set of characteristics. The problem under the parsimony criterion consists in finding with minimum number evolutionary steps. We propose hybrid heuristic methods - GRASP, path-relinking and genetic algorithm methodologies to build while minimizing parsimony. Computational experiments using benchmark conditions are reported, results obtained by proposed heuristics compared solutions traditional GRASP (without...

In metabolomics comprehensive metabolic fingerprints are obtained and subsequently analyzed to find the metabolites which differentiate groups of samples.

Várias situações práticas reais, tais como localizações de depósitos, hospitais e dispositivos telecomunicações (concentradores, torres celulares, etc), podem ser vistas um problema p-medianas. Este trabalho apresenta uma proposta para a solução do p-medianas baseado no backbone da rede computadores que será instalado Instituto Federal Fluminense (IFF). Esse tipo ocorrência é conhecida na literatura localização concentradores. Para resolver questão citada foi heurística GRASP. Testes...

Abstract Background In December 2019 in China, the COVID-19 pandemic process began. From this milestone, it is clear relevance of analysis control and prevention measures used to combat disease a work environment. The objective study evaluate main precautionary administrative services, using three techniques multi-criteria decision making. Methods This was conducted four stages. first stage, there characterization an services company as analytical model. second some were defined choices...

Utilização do método de análise hierárquica (AHP) para priorização serviços submarinos na indústria petróleoUsing the hierarchical analysis method for priorization of submarine services in oil industry

Neste trabalho e proposto um modelo de programacao linear inteira mista que permite determinar a quantidade otima equipamentos necessarios em uma usina termeletrica partir demanda energia eletrica prevista, maneira minimizar os gastos com combustiveis gas natural carvao custos operacao manutencao dos equipamentos. Considera-se como estudo caso o projeto da do Complexo Logistico Acu. Para otimizacao objeto estudo, foram criados tres cenarios, cada 11 valores diferentes para as demandas...

À Marinha do Brasil (MB) compete primordialmente a negação uso mar qualquer concentração de forças inimigas que se aproxime por via marítima. Para essa missão seja cumprida, é necessário MB invite esforços tecnológicos, fim garantir soberania no tange Zona Econômica Exclusiva brasileira, denominada Amazônia Azul. Esses avanços impostos pelo ambiente operacional, bem como necessidade emprego sistemas cada vez mais avançados em um cenário recursos orçamentários restritos, torna priorização dos...