Results 51 to 60 of about 894,538 (171)

Validation of a model of regulation in the tryptophan operon against multiple experiment data using global optimisation [PDF]

open access: yes, 2009
This paper is concerned with validating a mathematical model of regulation in the tryptophan operon using global optimization. Although a number of models for this biochemical network are proposed, in many cases only qualitative agreement between the ...
Bates, D.G.   +4 more
core  

An Optimal Control Theory for the Traveling Salesman Problem and Its Variants [PDF]

open access: yes, 2020
We show that the traveling salesman problem (TSP) and its many variants may be modeled as functional optimization problems over a graph. In this formulation, all vertices and arcs of the graph are functionals; i.e., a mapping from a space of measurable ...
Karpenko, M., Proulx, R. J., Ross, I. M.
core   +1 more source

Cycle Accurate Energy and Throughput Estimation for Data Cache [PDF]

open access: yes, 2009
Resource optimization in energy constrained real-time adaptive embedded systems highly depends on accurate energy and throughput estimates of processor peripherals. Such applications require lightweight, accurate mathematical models to profile energy and
McDonald-Maier, KD, Qadri, M
core  

Existence of solutions for discontinuous systems of Stieltjes differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
We introduce new transversality conditions in terms of derivatives with respect to a nondecreasing function $g: \mathbb R \longrightarrow \mathbb R$, and we use them to prove the existence of solutions for discontinuous systems of Stieltjes differential ...
Víctor Cora, Rodrigo López Pouso
doaj   +1 more source

σ-porosity in monotonic analysis with applications to optimization

open access: yesAbstract and Applied Analysis, 2005
We introduce and study some metric spaces of increasing positively homogeneous (IPH) functions, decreasing functions, and conormal (upward) sets. We prove that the complements of the subset of strictly increasing IPH functions, of the subset of strictly ...
A. M. Rubinov
doaj   +1 more source

Distribuição de pressão em rede de irrigação localizada otimizada por algoritmos genéticos Pressure distribution in a low-pressure optimized irrigation network using genetic algorithms

open access: yesEngenharia Agrícola, 2011
Modelos matemáticos computacionais de otimização de redes de irrigação, sob vazão em marcha, capazes de fornecer dados hidráulicos, são importantes para a verificação do comportamento do sistema quanto à distribuição da carga hidráulica (energia) e da ...
Francisco F. N. Marcuzzo, Edson Wendland
doaj   +1 more source

Determination of the two-dimensional distributions of gold nanorods by multiwavelength analytical ultracentrifugation

open access: yesNature Communications, 2018
Characterization of nanoparticles is a complex and important problem for the vast number of applications that require them. Here, the authors present a method to uncover the two-dimensional distribution of length and diameter of anisotropic nanoparticles
Simon E. Wawra   +5 more
doaj   +1 more source

Two-row and two-column mixed-integer presolve using hashing-based pairing methods

open access: yesEURO Journal on Computational Optimization, 2020
In state-of-the-art mixed-integer programming solvers, a large array of reduction techniques are applied to simplify the problem and strengthen the model formulation before starting the actual branch-and-cut phase.
Patrick Gemander   +5 more
doaj   +1 more source

A fuzzy approach to building thermal systems optimization. [PDF]

open access: yes, 1999
Optimization of building thermal systems is treated in the paper in the framework of fuzzy mathematical programming. This new approach allows to formulate more precisely the problem which compromises energy saving and thermal comfort satisfaction under ...
Angelov, Plamen
core  

Predicting Feynman periods in ϕ 4-theory

open access: yesJournal of High Energy Physics
We present efficient data-driven approaches to predict the value of subdivergence-free Feynman integrals (Feynman periods) in ϕ 4-theory from properties of the underlying Feynman graphs, based on a statistical examination of almost 2 million graphs.
Paul-Hermann Balduf, Kimia Shaban
doaj   +1 more source

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