Results 61 to 70 of about 154,776 (154)

Joint slot allocation and dynamic pricing of container sea–rail multimodal transportation

open access: yesJournal of Traffic and Transportation Engineering (English ed. Online), 2015
The container sea–rail multimodal transport system faces complex challenges with demand uncertainties for joint slot allocation and dynamic pricing. The challenge is formulated as a two-stage optimal model based on revenue management (RM) as actual slots
Di Liu, Hualong Yang
doaj   +1 more source

Time-domain induced polarization tomography inversion [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering
Induced polarization (IP) tomography measurements as a near-surface geophysical method can provide information about the degree of chargeability of subsurface materials, and are commonly used in mineral exploration, engineering studies (e.g., sediment ...
Sajjad Pourhashemi   +2 more
doaj   +1 more source

Model order reduction approaches for infinite horizon optimal control problems via the HJB equation

open access: yes, 2016
We investigate feedback control for infinite horizon optimal control problems for partial differential equations. The method is based on the coupling between Hamilton-Jacobi-Bellman (HJB) equations and model reduction techniques.
A. Alla   +19 more
core   +1 more source

A Reentry Trajectory Planning Algorithm via Pseudo-Spectral Convexification and Method of Multipliers

open access: yesMathematics
The reentry trajectory planning problem of hypersonic vehicles is generally a continuous and nonconvex optimization problem, and it constitutes a critical challenge within the field of aerospace engineering.
Haizhao Liang   +4 more
doaj   +1 more source

Metaheuristic Optimization Methods for Optimal Power Flow Analysis in DC Distribution Networks

open access: yesTESEA, Transactions on Energy Systems and Engineering Applications, 2020
In this paper is addressed the optimal power flow problem in direct current grids, by using solution methods based on metaheuristics techniques and numerical methods.
Luis Fernando Grisales Noreña   +4 more
doaj   +1 more source

Heuristic Methods Based on MINLP Formulation for Reliable Capacitated Facility Location Problems

open access: yesInternational Journal of Industrial Engineering and Production Research, 2015
This paper addresses a reliable facility location problem with considering facility capacity constraints. In reliable facility location problem some facilities may become unavailable from time to time.
Mohammad Rohaninejad   +2 more
doaj  

Sequential Monte Carlo pricing of American-style options under stochastic volatility models

open access: yes, 2012
We introduce a new method to price American-style options on underlying investments governed by stochastic volatility (SV) models. The method does not require the volatility process to be observed.
Brockwell, Anthony E.   +1 more
core   +1 more source

Energy-Preserving Algorithms for the Ginzburg–Landau Equation: Integrating Scientific Research with Talent Cultivation

open access: yesMathematics
This study proposes a novel structure-preserving algorithm for the Ginzburg–Landau equation (GLE) by combining the Fourier pseudospectral method with the Exponential Average Vector Field (EAVF) scheme.
Wei Shi, Chuheng Fu
doaj   +1 more source

A Fast First-Order Optimization Approach to Elastoplastic Analysis of Skeletal Structures

open access: yes, 2016
It is classical that, when the small deformation is assumed, the incremental analysis problem of an elastoplastic structure with a piecewise-linear yield condition and a linear strain hardening model can be formulated as a convex quadratic programming ...
Kanno, Yoshihiro
core   +1 more source

A sequential semidefinite programming method and an application in passive reduced-order modeling

open access: yes, 2005
We consider the solution of nonlinear programs with nonlinear semidefiniteness constraints. The need for an efficient exploitation of the cone of positive semidefinite matrices makes the solution of such nonlinear semidefinite programs more complicated ...
Freund, Roland W.   +2 more
core  

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