Mathematical Program
Mostrando 1-12 de 144 artigos, teses e dissertações.
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1. Finite element computational development for thermo-mechanical analysis of plane steel structures exposed to fire
Abstract This article presents a numerical formulation based on finite element procedures for application in nonlinear thermo-mechanical analyses of steel planar structures under fire condition. The mechanical properties of structural elements degrade when subjected to high temperatures, resulting in significant reductions in strength and stiffness. Under th
REM - International Engineering Journal. Publicado em: 2022
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2. CONSTRUCTION OF A MATHEMATICAL MODEL BASED ON A GENETIC ALGORITHM FOR AN APTITUDE PROGRAM IN HIGH SCHOOL STUDENT OPTIMIZATION
RESUMO Introdução: O algoritmo genético é um dos mais importantes modelos matemáticos teóricos para simulação de desenvolvimento biológico. É amplamente utilizado em muitos campos, tais como engenharia, medicina e economia. Objetivo: Utilizar o algoritmo genético como base de um modelo matemático para otimização no programa de aptidão nos es
Revista Brasileira de Medicina do Esporte. Publicado em: 2022
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3. Lowering costs for large-scale screening in psychosis: a systematic review and meta-analysis of performance and value of information for speech-based psychiatric evaluation
Objective: Obstacles for computational tools in psychiatry include gathering robust evidence and keeping implementation costs reasonable. We report a systematic review of automated speech evaluation for the psychosis spectrum and analyze the value of information for a screening program in a healthcare system with a limited number of psychiatrists (Maputo, M
Braz. J. Psychiatry. Publicado em: 2020-12
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4. ANALYTICAL EXPRESSIONS FOR THE CONCENTRATION AND CURRENT IN THE REDUCTION OF HYDROGEN PEROXIDE AT A METAL-DISPERSED CONDUCTING POLYMER FILM
A mathematical model describing the reduction of Hydrogen peroxide (H2O2) to water in a metal dispersed conducting polymer film is discussed. The model is based on a system of reaction-diffusion equations containing a non-linear term related to Michaelis-Menten kinetics of the enzymatic reaction. The approximate analytical expressions corresponding to the co
Quím. Nova. Publicado em: 2020-01
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5. Hepatitis C disease burden and strategies for elimination by 2030 in Brazil. A mathematical modeling approach
ABSTRACT Introduction and aim: Hepatitis C is a key challenge to public health in Brazil. The objective of this paper was to describe the Brazilian strategy for hepatitis C to meet the 2030 elimination goal proposed by World Health Organization (WHO). Methods: A mathematical modeling approach was used to estimate the current HCV-infected Brazilian populati
Braz J Infect Dis. Publicado em: 09/09/2019
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6. Maximizing the efficiency of residents operating room scheduling: a case study at a teaching hospital
Abstract Paper aims To find efficient operation room scheduling for residents considering several resources constraints and ensuring a minimum number of surgeries for approval in the training program. Originality We find no research in current literature addressing operation room resource allocation for residents training in order to meet legislation appro
Prod.. Publicado em: 15/08/2019
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7. Aritmética e interdisciplinaridade: ecos da história da educação matemática
RESUMO O objetivo deste texto é analisar artigos do periódico Revista Educação, da década de 1930, relativos às propostas de ensino globalizante e centros de interesse de Ovide Decroly. A análise tem em vista as ponderações que professores-autores dos artigos expressam sobre o ensino de aritmética por meio da proposta pedagógica decroliana. Conclu
Educ. rev.. Publicado em: 29/07/2019
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8. Universalidade e essencialidade: elementos de um discurso matemático
Resumo O presente artigo decorre de dados obtidos de nossa investigação de mestrado, finalizada em 2017, que buscou, na maior parte do tempo, estudar as tipologias de discursos no contexto de um subprojeto de matemática do Programa Institucional de Bolsas de Iniciação à Docência. Na investigação, constituiu-se um agrupamento específico de enunciado
Educ. Pesqui.. Publicado em: 18/07/2019
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9. Tipos de Problemas que Provocan la Generación de Argumentos Inductivos, Abductivos y Deductivos
Abstract This paper presents a relation between the types of conjecturing open problems in geometry, preferably solved using Dynamic Geometry Systems, and the types of arguments produced. The aim of this paper is to show how each type of problem can elicit the production of certain types of arguments (inductive, abductive, and deductive) during the problem-s
Bolema. Publicado em: 2019-04
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10. MODELING SOIL WATER REDISTRIBUTION UNDER SURFACE DRIP IRRIGATION
ABSTRACT The main objective of this study was to develop a numerical model to simulate water distribution, and the shape of the wetted soil volume, resulting from a point source irrigation at the ground surface (dripper), given soil hydraulic properties and irrigation system parameters. The mathematical model was developed in Fortran 90 at the Department of
Eng. Agríc.. Publicado em: 2019-02
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11. A simulation model to evaluate the economic consequences of insemination programs in dairy herds: timed artificial insemination and sex-sorted semen
ABSTRACT The objective of this study was to develop a simulation model to analyse the technical, economic, and financial performance of using different reproductive strategies in dairy herds. Strategies simulated were: artificial insemination (AI) using conventional semen after oestrus detection (AIC), AI using sex-sorted semen after oestrus detection (AIS),
R. Bras. Zootec.. Publicado em: 29/11/2018
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12. A GENERIC TACTICAL PLANNING MODEL TO SUPPLY A BIOREFINERY WITH BIOMASS
ABSTRACT The supply chains which bring biomass to biorefineries play a critical role in biofuel production. Optimization models can help decision makers to design more efficient chains and minimize the cost of biomass delivered to the refineries. This article based on a French national research project on biomass logistics considers one refinery, able to pro
Pesqui. Oper.. Publicado em: 2018-04