Results 21 to 30 of about 1,060,463 (289)

Convex approximations for complete integer recourse models [PDF]

open access: yes, 2002
We consider convex approximations of the expected value function of a two-stage integer recourse problem. The convex approximations are obtained by perturbing the distribution of the random right-hand side vector.
Vlerk, Maarten H. van der   +2 more
core   +2 more sources

Artificial Algae Algorithm with Multi-Light Source Movement for Economic Dispatch of Thermal Generation

open access: yesMehran University Research Journal of Engineering and Technology, 2020
Economic Dispatch (ED) is one of the major concerns for the efficient and economical operation of the modern power system. Actual ED problem is non-convex in nature due to Ramp Rate Limits (RRL), Valve-Point Loading Effects (VPLE), and Prohibited ...
Hafiz Muhammad Awais   +2 more
doaj   +1 more source

Convex Optimisation Model for Ship Speed Profile: Optimisation under Fixed Schedule

open access: yesJournal of Marine Science and Engineering, 2021
We present a novel convex optimisation model for ship speed profile optimisation under varying environmental conditions, with a fixed schedule for the journey.
Janne Huotari   +3 more
doaj   +1 more source

Efficient Convex Optimization of Reentry Trajectory via the Chebyshev Pseudospectral Method

open access: yesInternational Journal of Aerospace Engineering, 2019
A novel sequential convex (SCvx) optimization scheme via the Chebyshev pseudospectral method is proposed for efficiently solving the hypersonic reentry trajectory optimization problem which is highly constrained by heat flux, dynamic pressure, normal ...
Chun-Mei Yu, Dang-Jun Zhao, Ye Yang
doaj   +1 more source

\(E\)-Convex programming

open access: yesJournal of Numerical Analysis and Approximation Theory, 2004
In [6] one shows that some of the results obtained in [5] on \(E\)-convex programming are incorrect. In this paper we recover these results in the new hypotheses.
Liana Lupşa, Dorel Duca
doaj   +2 more sources

A Global Optimization Approach for Solving Generalized Nonlinear Multiplicative Programming Problem

open access: yesAbstract and Applied Analysis, 2014
This paper presents a global optimization algorithm for solving globally the generalized nonlinear multiplicative programming (MP) with a nonconvex constraint set.
Lin-Peng Yang   +2 more
doaj   +1 more source

On Mixed-Integer Random Convex Programs [PDF]

open access: yes, 2012
We consider a class of mixed-integer optimization problems subject to N randomly drawn convex constraints. We provide explicit bounds on the tails of the probability that the optimal solution found under these N constraints will become infeasible for the
D. Lyons   +8 more
core   +1 more source

A Note on Optimality Conditions for DC Programs Involving Composite Functions

open access: yesAbstract and Applied Analysis, 2014
By using the formula of the ε-subdifferential for the sum of a convex function with a composition of convex functions, some necessary and sufficient optimality conditions for a DC programming problem involving a composite function are obtained.
Xiang-Kai Sun, Hong-Yong Fu
doaj   +1 more source

Upper bounds for packings of spheres of several radii

open access: yesForum of Mathematics, Sigma, 2014
We give theorems that can be used to upper bound the densities of packings of different spherical caps in the unit sphere and of translates of different convex bodies in Euclidean space. These theorems extend the linear programming bounds for packings of
DAVID DE LAAT   +2 more
doaj   +1 more source

Inexact Restoration Methods for Semivectorial Bilevel Programming Problem on Riemannian Manifolds

open access: yesAxioms, 2022
For a better understanding of the bilevel programming on Riemannian manifolds, a semivectorial bilevel programming scheme is proposed in this paper. The semivectorial bilevel programming is firstly transformed into a single-level programming problem by ...
Jiagen Liao, Zhongping Wan
doaj   +1 more source

Home - About - Disclaimer - Privacy