Bounds
Mostrando 1-12 de 226 artigos, teses e dissertações.
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1. O efeito de políticas públicas e de características locais sobre o desenvolvimento econômico: uma análise empírica baseada nos municípios de Minas Gerais
Resumo Esta pesquisa usou dados cross-section, centrados em 2016, para analisar o efeito da distribuição dos gastos públicos e de certas preferências econômicas, demográficas e políticas no desenvolvimento dos municípios de Minas Gerais (i.e.: Índice Mineiro de Responsabilidade Social - IMRS) e suas subdimensões (i.e.: educação, saúde, vulnerabi
Nova Economia. Publicado em: 2022
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2. Local characteristics and the Covid-19 pandemic: an analysis focused on the municipalities from the Brazilian state of Minas Gerais
Resumo Visando compreender os motivos que levaram certas localidades a enfrentar mais/menos dificuldades no combate à COVID-19, estimou-se o efeito de determinadas características municipais sobre as principais estatísticas desta doença. Para tanto, consideraram-se dados cross-section (com casos/óbitos acumulados até 21 de abril/2021), sobre os municí
Economia e Sociedade. Publicado em: 2022
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3. Dynamic anisotropy and non-linear geostatistics supporting short term modelling of structurally complex gold mineralization
Abstract Non-linear geostatistical methods are known to deal appropriately with the geological and geometrical complexity of gold deposits. This article reports the results related to an investigation to improve the gold content estimate based on restricted ore modeling to honor the structural aspects that control the mineralization. The grade domains are de
REM, Int. Eng. J.. Publicado em: 2021-06
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4. Structural reliability model considering mixed probabilistic and interval variables
Abstract Traditional probability-based structural reliability analysis method can only consider random uncertainties described by random distribution functions, which required sufficient experimental samples. On comparison, interval uncertainties can be more appropriate when lacking information. In realistic situations, several structural reliability models
Lat. Am. j. solids struct.. Publicado em: 17/01/2020
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5. ANALYSIS OF MIXED INTEGER PROGRAMMING FORMULATIONS FOR SINGLE MACHINE SCHEDULING PROBLEMS WITH SEQUENCE DEPENDENT SETUP TIMES AND RELEASE DATES
ABSTRACT The scheduling of jobs over a single machine with sequence dependent setups is a classical problem setting that appears in many practical applications in production planning and logistics. In this work, we analyze six mixed-integer formulation paradigms for this classical context considering release dates and two objective functions: the total weigh
Pesqui. Oper.. Publicado em: 09/05/2019
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6. NEW THEORETICAL INVESTIGATIONS ON THE GAP OF THE SKIVING STOCK PROBLEM
ABSTRACT The one-dimensional skiving stock problem is a combinatorial optimization problem being of high relevance whenever an efficient and sustainable utilization of given resources is intended. In the classical formulation, a given supply of (small) item lengths has to be used to build as many large objects (specified by some target length) as possible. F
Pesqui. Oper.. Publicado em: 09/05/2019
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7. Upper and lower bounds for annuities and life insurance from incomplete mortality data
RESUMO O objetivo deste estudo foi estabelecer limites superior e inferior para o valor presente esperado de anuidades vitalícias e seguros de vida inteira a partir de dados incompletos sobre mortalidade, generalizando resultados anteriores sobre expectativa de vida. Desde seu surgimento, no século XVII, a ciência atuarial se dedica ao estudo de anuidades
Rev. contab. finanç.. Publicado em: 25/03/2019
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8. Multi-objective optimization with Kriging surrogates using “moko”, an open source package
Abstract Many modern real-world designs rely on the optimization of multiple competing goals. For example, most components designed for the aerospace industry must meet some conflicting expectations. In such applications, low weight, low cost, high reliability, and easy manufacturability are desirable. In some cases, bounds for these requirements are not cle
Lat. Am. j. solids struct.. Publicado em: 22/10/2018
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9. STOCHASTIC KNAPSACK PROBLEM: APPLICATION TO TRANSPORTATION PROBLEMS
ABSTRACT In this paper, we study the stochastic knapsack problem with expectation constraint. We solve the relaxed version of this problem using a stochastic gradient algorithm in order to provide upper bounds for a branch-and-bound framework. Two approaches to estimate the needed gradients are studied, one based on Integration by Parts and one using Finite
Pesqui. Oper.. Publicado em: 2017-09
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10. Thermodynamic bounds for existence of normal shock in compressible fluid flow in pipes
Abstract The present paper is concerned with the thermodynamic theory of the normal shock in compressible fluid flow in pipes, in the lights of the pioneering works of Lord Rayleigh and G. Fanno. The theory of normal shock in pipes is currently presented in terms of the Rayleigh and Fanno curves, which are shown to cross each other in two points, one corresp
An. Acad. Bras. Ciênc.. Publicado em: 2017-06
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11. Certain Aspects of Univalent Function with Negative Coefficients Defined by Bessel Function
ABSTRACT Key words: In recent years, applications of Bessel functions have been effectively used in the modelling of chemical engineering processes and theory of univalent functions.In this paper, we study a new class of analytic and univalent functions with negative coefficients in the open unit disk defined by Modified Hadamard product with Bessel function
Braz. arch. biol. technol.. Publicado em: 23/01/2017
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12. GENERALIZED NASH EQUILIBRIUM PROBLEMS - RECENT ADVANCES AND CHALLENGES
Generalized Nash equilibrium problems have become very important as a modeling tool during the last decades. The aim of this survey paper is twofold. It summarizes recent advances in the research on computational methods for generalized Nash equilibrium problems and points out current challenges. The focus of this survey is on algorithms and their convergenc
Pesqui. Oper.. Publicado em: 2014-12