Results 11 to 20 of about 3,285,936 (243)

On the benefit of ∈-efficient solutions in multi objective space mission design [PDF]

open access: yes, 2008
In this work we consider multi-objective space mission design problems. We will show that it makes sense from the practical point of view to consider in addition to the (Pareto) optimal solutions also nearly optimal ones since this increases ...
Vasile, M.   +2 more
core   +8 more sources

On the detection of nearly optimal solutions in the context of single-objective space mission design problems [PDF]

open access: yes, 2011
When making decisions, having multiple options available for a possible realization of the same project can be advantageous. One way to increase the number of interesting choices is to consider, in addition to the optimal solution x*, also nearly optimal
Vasile, Massimiliano   +3 more
core   +4 more sources

Computing the set of Epsilon-efficient solutions in multiobjective space mission design [PDF]

open access: yes, 2011
In this work, we consider multiobjective space mission design problems. We will start from the need, from a practical point of view, to consider in addition to the (Pareto) optimal solutions also nearly optimal ones.
Vasile, Massimiliano   +2 more
core   +4 more sources

Numerical solutions of neutral stochastic functional differential equations [PDF]

open access: yes, 2008
This paper examines the numerical solutions of neutral stochastic functional differential equations (NSFDEs) $d[x(t)-u(x_t)]=f(x_t)dt+g(x_t)dw(t)$, $t\geq 0$.
Wu, Fuke   +2 more
core   +4 more sources

Analytical Approximate Solutions for Scalarized AdS Black Holes

open access: yesUniverse, 2022
The spontaneous scalarization of Schwarzscild-AdS is investigated in the Einstein-scalar-Gauss–Bonnet (ESGB) theory. Firstly, we construct scalarized AdS black holes numerically.
De-Cheng Zou   +5 more
doaj   +1 more source

Convergence To Approximate Solutions of Multivalued Operators

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2023
The goal of this study is to provide a new explicit iterative process method  approach for solving maximal monotone(M.M )operators in Hilbert spaces utilizing a finite family of different types of  mappings as( nonexpansive mappings,resolvent mappings ...
Zena Hussein Maibed
doaj   +1 more source

Approximate solutions in space mission design [PDF]

open access: yes, 2008
In this paper, we address multi-objective space mission design problems. From a practical point of view, it is often the case that,during the preliminary phase of the design of a space mission, the solutions that are actually considered are not 'optimal'
Vasile, M.   +8 more
core   +1 more source

APPROXIMATE SOLUTIONS OF GRETZ - NUSSELT PROBLEM

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2015
The approximate solutions of Gretz - Nusselt problem are provided in the article. For these solutions their application range and a definition of errors occurred at solving the differential equation of energy are given.
V. G. Milyutin, V. S. Loginov
doaj   +1 more source

A Novel Scheme of the ARA Transform for Solving Systems of Partial Fractional Differential Equations

open access: yesFractal and Fractional, 2023
In this article, a new analytical scheme of the ARA transform is introduced to solve systems of fractional partial differential equations. The principle of the proposed technique is based on combining the ARA transform with the residual power series ...
Aliaa Burqan
doaj   +1 more source

The Hellmann–Feynman theorem, the comparison theorem, and the envelope theory

open access: yesResults in Physics, 2015
The envelope theory is a convenient method to compute approximate solutions for bound state equations in quantum mechanics. It is shown that these approximate solutions obey a kind of Hellmann–Feynman theorem, and that the comparison theorem can be ...
Claude Semay
doaj   +1 more source

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