Linear Programming
Mostrando 13-24 de 466 artigos, teses e dissertações.
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13. Computational Model for Microgeneration Simulation, From Solar and Wind Renewable Sources, With Optimal Allocation of Loads, Electric Vehicle and Energy Storage, In a Residential Electrical Micro Network
Abstract The electrical sector is under constant evolution. One of the areas refers to the consumers that come to be generators, implementing distributed generation, interconnected to a smart grid. This article discusses the improvement of an algorithm, already presented in the literature, to make the best temporal allocation of loads, electric vehicle, stor
Braz. arch. biol. technol.. Publicado em: 29/10/2018
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14. Optimization of reinforced concrete polygonal sections under biaxial bending with axial force
Abstract Concrete is the world’s most utilized material for production of the structural elements employed in civil construction. Due to its low tensile strength and brittle nature it is reinforced with steel bars forming the reinforced concrete (RC structure). Linear elements of reinforced concrete are commonly employed in multi-story buildings, bridges,
Lat. Am. j. solids struct.. Publicado em: 04/10/2018
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15. Fuzzy Linear Programming: Optimization of an Electric Circuit Model
RESUMO Um problema de divisão de tensão de um circuito é modelado com o objetivo de determinar os valores centrados das resistências, de maneira que a impedância resistiva do divisor de tensão seja mínima. Este problema é equivalente a maximizar as admitâncias, associadas às resistências, que são definidas como a razão entre a corrente elétrica
TEMA (São Carlos). Publicado em: 2017-12
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16. AN OPTIMIZATION MODEL TO MINIMIZE THE EXPECTED END-TO-END TRANSMISSION TIME IN WIRELESS MESH NETWORKS
ABSTRACT Time metrics are extremely important to evaluate the transmission performance on Wireless Mesh Networks (WMNs), whose main characteristic is to use multihop technology to extend the network coverage area. One of such metrics is WCETT (Weighted Cumulative Expected Transmission Time), in which transmission times per hop are weighted for both proactive
Pesqui. Oper.. Publicado em: 2017-08
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17. Optimizing short-term production plan using a portfolio optimization model
Abstract Short-term production plans are the basis for operational mine production schedules. They concentrate on making long-term mine plans operationally feasible. It ensures a steady flow of product for meeting blending targets. Due to the quality variation of material, blend optimization is an uncertainty based optimization problem. There are different a
REM, Int. Eng. J.. Publicado em: 2017-03
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18. Identifying Mechanical Properties of Viscoelastic Materials in Time Domain Using the Fractional Zener Model
Abstract The present paper aims at presenting a methodology for characterizing viscoelastic materials in time domain, taking into account the fractional Zener constitutive model and the influence of temperature through Williams, Landel, and Ferry’s model. To that effect, a set of points obtained experimentally through uniaxial tensile tests with different
Lat. Am. j. solids struct.. Publicado em: 2017-01
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19. SELECTING WORKING TEAMS FOR INFORMATION TECHNOLOGY OUTSOURCING PROJECTS THROUGH A COMBINATION OF METHODOLOGIES
ABSTRACT This paper deals with a problem that Information Technology outsourcing suppliers generally face when selecting a working team technically capable for specific roles in software development projects. A combination of methodologies, interactively integrated, is proposed. They are Soft System Methodology to structure the problem, Repertory Grid for in
Pesqui. Oper.. Publicado em: 2017-01
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20. USE OF CONTINUED ITERATION ON THE REDUCTION OF ITERATIONS OF THE INTERIOR POINT METHOD
ABSTRACT Interior point methods have been widely used to determine the solution of large-scale linear programming problems. The predictor-corrector method stands out among all variations of interior point methods due to its efficiency and fast convergence. In each iteration it is necessary to solve two linear systems to determine the predictor-corrector dire
Pesqui. Oper.. Publicado em: 2016-12
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21. A NEW MATHEMATICAL MODEL FOR THE WORKOVER RIG SCHEDULING PROBLEM
ABSTRACT One of the most important activities in the oil and gas industry is the intervention in wellsfor maintenance services, which is necessary to ensure the constant production of oil. These interventions are carried out by workover rigs. Thus, the Workover Rig Scheduling Problem (WRSP) consists of finding the best schedule to service the wells while con
Pesqui. Oper.. Publicado em: 2016-08
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22. Decision model to control water losses in distribution networks
Abstract The losses in the urban water supply networks have become a growing concern. There are several alternatives for the quantification, detection and monitoring of water losses. However, in general, water companies have budgetary and other constraints that hinder implementation. Therefore, this paper presents a model to aid the selection of a subset of
Prod.. Publicado em: 25/07/2016
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23. Linear Programming in the economic estimate of livestock-crop integration: application to a Brazilian dairy farm
ABSTRACT A linear programming mathematical model was applied to a representative dairy farm located in Brazil. The results showed that optimization models are relevant tools to assist in the planning and management of agricultural production, as well as to assist in estimating potential gains from the use of integrated systems. Diversification was a necessar
R. Bras. Zootec.. Publicado em: 2016-04
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24. How can dairies maximize their profits and properly remunerate their dairy farmers?
ABSTRACT The current pricing process of raw milk in Brazil discourages producers from improving milk composition, which affects both yield and quality of dairy products. Furthermore, small and medium-sized dairies face great difficulties when it comes to planning production. Thus, a linear programming model was developed to price the raw milk and determine t
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-02