Results 1 to 10 of about 252,659 (163)

A Two-Stage Monte Carlo Approach for Optimization of Bimetallic Nanostructures [PDF]

open access: yesAnnals of computer science and information systems, 2020
In this paper we propose a two-stage lattice Monte Carlo approach for optimization of bimetallic nanoalloys: simulated annealing on a larger lattice, followed by simulated diffusion. Both algorithms are fairly similar in structure, but their combination was found to give significantly better solutions than simulated annealing alone. We also discuss how
Rossen Mikhov   +6 more
doaj   +3 more sources

A distributionally robust optimization approach for two-stage facility location problems [PDF]

open access: yesEURO Journal on Computational Optimization, 2020
In this paper, we consider a facility location problem where customer demand constitutes considerable uncertainty, and where complete information on the distribution of the uncertainty is unavailable.
Arash Gourtani   +2 more
doaj   +6 more sources

Enhancing Portfolio Optimization: A Two-Stage Approach with Deep Learning and Portfolio Optimization

open access: yesMathematics
The portfolio selection problem has been a central focus in financial research. A complete portfolio selection process includes two stages: stock pre-selection and portfolio optimization.
Shiguo Huang   +4 more
doaj   +2 more sources

An optimized two stage U-Net approach for segmentation of pancreas and pancreatic tumor

open access: yesMethodsX
The segmentation of pancreas and pancreatic tumor remain a persistent challenge for radiologists. Consequently, it is essential to develop automated segmentation methods to address this task.
Himali Ghorpade   +3 more
doaj   +3 more sources

A Two-Stage Decomposition Approach for AC Optimal Power Flow [PDF]

open access: yesIEEE Transactions on Power Systems, 2021
The alternating current optimal power flow (AC-OPF) problem is critical to power system operations and planning, but it is generally hard to solve due to its nonconvex and large-scale nature. This paper proposes a scalable decomposition approach in which the power network is decomposed into a master network and a number of subnetworks, where each ...
Shenyinying Tu   +2 more
openaire   +2 more sources

Selection and Location of Fixed-Step Capacitor Banks in Distribution Grids for Minimization of Annual Operating Costs: A Two-Stage Approach

open access: yesComputers, 2022
The problem regarding the optimal location and sizing of fixed-step capacitor banks in distribution networks with radial configuration is studied in this research by applying a two-stage optimization approach.
Oscar Danilo Montoya   +2 more
doaj   +1 more source

Aerodynamic design and optimization of sCO2 turbomachinery: Two-Stage optimization approach

open access: yesEnergy Conversion and Management, 2023
The application of supercritical CO2 (sCO2) in power generation systems is getting attractive recently owing to high energy efficiency and compact component size, but there are big design challenges for turbines and com-pressors due to the supercritical fluid characteristics. In this paper, a novel turbomachinery design optimization framework, "Turbine-
Tugberk Hakan Cetin, Jie Zhu
openaire   +2 more sources

A Two-Stage Filter Split-Optimization Approach for Obtaining Multiple Solutions with Identical Objective Value

open access: yesMachines, 2021
A tremendous amount of work has been done in the recent years in the optimization of input parameters, however, current optimization techniques can only provide a single optimal input process parameter combination.
Pan Zou   +8 more
doaj   +1 more source

Adaptive information sharing approach for crowd networks based on two stage optimization [PDF]

open access: yesInternational Journal of Crowd Science, 2019
Purpose – This paper aims to optimize and evaluating the performance of the crowd networks through analyzing their information sharing patterns. That is, in a crowd network, the qualities of accomplishing tasks are highly dependent on the effective ...
Xiaoni Wang   +4 more
doaj   +1 more source

Annual Operating Costs Minimization in Electrical Distribution Networks via the Optimal Selection and Location of Fixed-Step Capacitor Banks Using a Hybrid Mathematical Formulation

open access: yesMathematics, 2022
The minimization of annual operating costs in radial distribution networks with the optimal selection and siting of fixed-step capacitor banks is addressed in this research by means of a two-stage optimization approach.
Oscar Danilo Montoya   +2 more
doaj   +1 more source

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