نتایج جستجو برای: mathematical formulation

تعداد نتایج: 316021  

2002
Mark T. Brown Corrado Giannantoni

After having briefly recalled the main results shown in the previous Conference (a rigorous definition of Emergy in mathematical terms and a general formulation of the Emergy Balance equation) the paper presents an extremely general mathematical formulation of the Maximum Em-Power Principle. Such a formulation allows us to analyze in particular (but not exclusively): i) in what sense the “maxim...

Journal: :Simulation 2007
Thomas D. Panning Layne T. Watson Clifford A. Shaffer John J. Tyson

The budding yeast cell cycle can be modeled by a set of ordinary differential equations with 143 rate constant parameters. The quality of the model (and an associated vector of parameter settings) is measured by comparing simulation results to the experimental data derived from observing the cell cycles of over 100 selected mutated forms. Unfortunately, determining whether the simulated phenoty...

M. Hajialilou Bonab, P. Hamidi, T. Akhlaghi,

Calculation of lateral earth pressure on retaining walls is one of the main issues in geotechnics. The upper and lower bound theorems of plasticity are used to analyze the stability of geotechnical structures include bearing capacity of foundations, lateral earth pressure on retaining walls and factor of safety of slopes. In this paper formulation of finite element limit analysis is introduced ...

2005
R. P. Feynman

The validity of the rules given in previous papers for the solution of problems in quantum electrodynamics is established. Starting with Fermi's formulation of the eld as a set of harmonic oscillators, the e ect of the oscillators is integrated out in the Lagrangian form of quantum mechanics. There results an expression for the e ect of all virtual photons valid to all orders in e/~c. It is sho...

2001
Jacob Rubinstein S. Torquato

This paper is concerned with the problem of predicting the effective rate constant k associated with diffusion-controlled reactions in media composed of static and reactive traps (sinks) which are generally distributed randomly throughout a region containing reactive particles. The effective equation for diffusion-controlled reactions is derived using the method of homogenization. This leads to...

2014
Ivaylo B. Mihaylov

PURPOSE To introduce the concept of energy minimization-based inverse optimization for external beam radiotherapy. MATERIALS AND METHODS Mathematical formulation of energy minimization-based inverse optimization is presented. This mathematical representation is compared to the most commonly used dose-volume based formulation used in inverse optimization. A simple example on digitally created ...

Journal: :journal of algorithms and computation 0
samira rezaei department of algorithms and computation, university of tehran amin ghodousian university of tehran, college of engineering, faculty of engineering science

in this paper, a mathematical method is proposed to formulate a generalized ordering problem. this model is formed as a linear optimization model in which some variables are binary. the constraints of the problem have been analyzed with the emphasis on the assessment of their importance in the formulation. on the one hand, these constraints enforce conditions on an arbitrary subgraph and then g...

2012
Rinse Wester Dimitrios Sarakiotis Eric Kooistra Jan Kuper

CλaSH, a functional hardware description language based on Haskell, has several abstraction mechanisms that allow a hardware designer to describe architectures in a short and concise way. In this paper we evaluate CλaSH on a complex DSP application, a Polyphase Filter Bank as it is used in the ASTRON APERTIF project. The Polyphase Filter Bank is implemented in two steps: first in Haskell as bei...

This paper presents a new formulation for warehouse inventory management in a stochastic situation. The primary source of this formulation is derived from FP model, which has been proposed by Fletcher and Ponnambalam for reservoir management. The new proposed mathematical model is based on the first and the second moments of storage as a stochastic variable. Using this model, the expected value...

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