Minimization Of States
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Application of a Greedy Algorithm to Military Aircraft Fleet Retirements
ABSTRACT This article presents a retirement analysis model for aircraft fleets. By employing a greedy algorithm, the presented solution is capable of identifying individually weak assets in a fleet of aircraft with inhomogeneous historical utilization. The model forecasts future retirement scenarios employing user-defined decision periods, informed by a cost
J. Aerosp. Technol. Manag.. Publicado em: 20/07/2017
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2. As trocas de informações na experiência convencional tributária internacional e o sigilo bancário no Brasil
Text that analyzes brazilian position towards the necessity of international tax cooperation, as a result of the increasing illegal acts for minimizing taxation, which has been facilitated by technological advances brought by globalization. Verified the lack of effectiveness in States unilateral activity and the limitation of its domestic laws for solving th
Publicado em: 2010
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3. Benefícios sociais e ambientais do coprocessamento de pneus inservíveis: estudo de caso na cidade de João Pessoa-PB
The useless tire is a residue that must be managed correctly until its final disposal as well as its collection and storage must be done adequately. Therefore, if it is inadequately disposed of, it can cause damages to the environment and to public health. In March 2005 the city of João Pessoa, initiated a program called Programa Nordeste Rodando Limpo - No
Publicado em: 2010
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4. An approach to incompletely specified finite state machine minimization / Uma estratégia para a minimização de máquinas de estados finitos parciais
Finite State Machines are largely used on Software Engineering to model systems specifications. In these models, designers may inadvertently include redundant states, i.e., states which exhibit the same input/output behavior. The absence of such states brings benefits to the modeling activities, reducing the complexity and taking less physical resources on i
Publicado em: 2009
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5. ANÁLISE E CONTROLE DE GERADOR SÍNCRONO A ÍMÃ PERMANENTE APLICADO A SISTEMA DE CONVERSÃO DE ENERGIA EÓLICA / ANALYSIS AND CONTROL OF PERMANENT MAGNET SYNCHRONOUS GENERATOR APPLIED TO WIND ENERGY CONVERSION SYSTEM
This dissertation addresses the analysis and control of permanent magnet synchronous generators (PMSG) found in wind energy conversion system. The operation modes of the wind turbine the current and voltage constraints of a PWM rectifier are defined and a methodology to determine the generator current is presented. The generator currents obtained guarantee t
Publicado em: 2009
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6. Synthesis of circuits with memory in multilevel logic / Síntese de circuitos com memória em lógica multinível
With the advanced in the technology VLSI (very Large Scale Integration) of the integrated circuits, broad interest has been generated regarding circuits that utilize more than two logical levels for the discrete representation of signals. These circuits are named, logic circuits of multiple values (MVL) and offer a great potential for the design of VLSI, bec
Publicado em: 2008
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7. SISTEMA DE GESTÃO DE LOGÍSTICA DE TRANSPORTE DE GÁS NATURAL POR GASODUTOS / LOGISTIC MANAGEMENT SYSTEM FOR NATURAL GAS TRANSPORTATION BY PIPELINE
An efficient management of the natural gas business chain, based on pipeline transmission network and taking into consideration the interaction between the main players such as Shippers, Suppliers, Transmission Companies and Local Distribution Companies, requires the use of information technology and decision-making support systems. This work presents a Natu
Publicado em: 2008
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8. Ethanol storage tanks location in Brazil: a mixed integer program model application / Localização de tanques de armazenagem de álcool combustível no Brasil: aplicação de um modelo matemático de otimização
The main purpose of this research is to develop a mathematical model intended for strategic analysis of the optimal location and considering suitable volumes for storage ethanol (anhydrous and hydrous) tanks. The Mixed Integer Program - MIP model was based on Brazilian ethanol distribution system. The model considered market parameters as supply, demand, and
Publicado em: 2008
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9. Algoritmo preditivo baseado em modelo aplicado ao controle de velocidade do motor de indução / Speed control of induction motor using predictive algorithm
This thesis presents the results concerning the control of rotor flux and speed of the induction motor using MBPC strategy, which is based on the error minimization between the future set point and model prediction, resulting in control signals. In the case studied in this thesis the motor model is described in space-state. The non linear MBPC emploies searc
Publicado em: 2007
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10. Propriedades de equilÃbrio e de transporte da matÃria de vÃrtices em nanoestruturas supercondutoras
In the present thesis, we study theoretically the equilibrium properties and dynamics of the vortex matter in two classes of nanostructured superconductors: (i) mesoscopic samples, with dimensions comparable with the penetration depth; and (ii) films with periodic array of artificial traps. In both cases, the vortex lattice symmetry is strongly dependent on
Publicado em: 2007
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11. Solving the unit commitment problem of hydropower plants via Lagrangian Relaxation and Sequential Quadratic Programming
We consider the optimal scheduling of hydropower plants in a hydrothermal interconnected system. This problem, of outmost importance for large-scale power systems with a high proportion of hydraulic generation, requires a detailed description of the so-called hydro unit production function. In our model, we relate the amount of generated hydropower to nonlin
Computational & Applied Mathematics. Publicado em: 2005-12
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12. Otimização de pilares de concreto armado mediante uniformização do índice de confiabilidade / Optimization of reinforced concrete columns and calculation of the index of reliability
Currently, it searches minimization of the costs for a structure that satisfies the security principles, with respect to the states use and rupture limits, and the impositions of norms techniques. However, no structure is total insurance. The project involves uncertainties, therefore it in such a way has variations in loading how much in the resistant capaci
Publicado em: 2004