Deterministic Model
Mostrando 1-12 de 197 artigos, teses e dissertações.
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1. CAPACITATED LOT SIZING AND SCHEDULING WITH ORDER ACCEPTANCE AND DELIVERY TIME WINDOWS: MATHEMATICAL MODEL AND A MIP-BASED HEURISTIC
ABSTRACT This research addresses a lot sizing and scheduling problem inspired by a real-world production environment where the customers make advanced orders and the industry need to decide which orders will be accepted with the aim of maximizing the profit respecting the production capacity constraints. Orders are composed of different types of items which
Pesqui. Oper.. Publicado em: 02/12/2019
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2. Estimating credit and profit scoring of a Brazilian credit union with logistic regression and machine-learning techniques
Abstract Purpose Although credit unions are nonprofit organizations, their objectives depend on the efficient management of their resources and credit risk aligned with the principles of the cooperative doctrine. This paper aims to propose the combined use of credit scoring and profit scoring to increase the effectiveness of the loan-granting process in cre
RAUSP Manag. J.. Publicado em: 25/11/2019
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3. Assessing geologic model uncertainty - a case study comparing methods
Abstract Evaluating mineral resources requires the prior delimitation of geologically homogeneous stationary domains. The knowledge about the ore genesis and geological processes involved are translated into three dimensional models, essential for planning the production and decision-making. The mineral industry usually considers grade uncertainty for resour
REM, Int. Eng. J.. Publicado em: 16/09/2019
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4. RELIABILITY-BASED MULTI-OBJECTIVE OPTIMIZATION APPLIED TO CHEMICAL ENGINEERING DESIGN
ABSTRACT Chemical engineering optimization represents a significant challenge due to the complexity of the mathematical models that are frequently required in this area. These models are normally associated with nonlinear equations that represent mass, energy, and momentum balances, which are submitted to physical, constitutive, environmental, and design lim
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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5. A stochastic approach for measuring the uncertainty of claims reserves
RESUMO Este trabalho visa a obter métricas para a quantificação da variabilidade das provisões técnicas de sinistros, fazendo uso de modelos determinísticos e estocásticos. Em suma, tudo o que os métodos tradicionais não fornecem (medidas de variabilidade e de insuficiência de capital) são de fundamental importância para uma gestão atuarial efic
Rev. contab. finanç.. Publicado em: 27/06/2019
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6. A Takagi-Sugeno fuzzy model for predicting the clean rock joints shear strength
Abstract It is well known that learning about the mechanical behavior of a fractured rock mass depends on the shear behavior of its discontinuities. Several studies have shown that the shear behavior of unfilled rock discontinuities depends on their boundary conditions, roughness characteristics and the properties of the joints walls. Currently, there are se
REM, Int. Eng. J.. Publicado em: 2019-06
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7. STOCHASTIC DISCRETE LOT-SIZING WITH LEAD TIMES FOR FUEL SUPPLY OPTIMIZATION
ABSTRACT We address the problem of expected cost minimization of meeting the uncertain fuel demand during a time planning horizon, where supply is provided by selecting discrete shipments with lead times. Due to uncertainty and the passage of time, corrective actions can be taken such as cancellation and postponement on supply of shipments with associated co
Pesqui. Oper.. Publicado em: 09/05/2019
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8. Efeitos da idade-período e coorte na mortalidade por câncer do ovário no Brasil e suas grandes regiões
Resumo: Avaliar os efeitos da idade, período e coorte de nascimento (APC) na evolução temporal da mortalidade por câncer do ovário no Brasil e suas grandes regiões, entre o período de 1980 a 2014. Estudo ecológico de tendência temporal em que foram utilizados modelos APC com uma abordagem bayesiana e o método determinístico INLA (Integrated Nested
Cad. Saúde Pública. Publicado em: 11/03/2019
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9. Cost-effectiveness analysis of the treatment of mild and moderate Alzheimer’s disease in Brazil
Objective: To perform a cost-effectiveness analysis of donepezil and rivastigmine therapy for mild and moderate Alzheimer’s disease (AD) from the perspective of the Brazilian Unified Health System. Method: A hypothetical cohort of 1,000 individuals of both sexes, aged >65 years, and diagnosed with AD was simulated using a Markov model. The time horizon w
Braz. J. Psychiatry.. Publicado em: 08/11/2018
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10. Simple but not simpler: a systematic review of Markov models for economic evaluation of cervical cancer screening
The aim of this study was to critically evaluate the quality of the models used in economic evaluations of screening strategies for cervical cancer prevention. We systematically searched multiple databases, selecting model-based full economic evaluations (cost-effectiveness analyses, cost-utility analyses, and cost-benefit analyses) of cervical cancer screen
Clinics. Publicado em: 10/07/2018
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11. Temporal assessment of microbial communities in soils of two contrasting mangroves
ABSTRACT Variations in microbial communities promoted by alterations in environmental conditions are reflected in similarities/differences both at taxonomic and functional levels. Here we used a natural gradient within mangroves from seashore to upland, to contrast the natural variability in bacteria, cyanobacteria and diazotroph assemblages in a pristine ar
Braz. J. Microbiol.. Publicado em: 2018-03
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12. Spatial Distribution of Annual and Monthly Rainfall Erosivity in the Jaguarí River Basin
ABSTRACT The Jaguarí River Basin forms the main water supply sources for the São Paulo Metropolitan Region and other cities in the state. Since the kinetic energy of rainfall is the driving force of water erosion, the main cause of land and water degradation, we tested the hypothesis of correlation between the erosive potential of rainfall (erosivity) and
Rev. Bras. Ciênc. Solo. Publicado em: 09/11/2017