Results 41 to 50 of about 12,262,956 (340)

Controller Design for Unstable Time-Delay Systems with Unknown Transfer Functions

open access: yesMathematics, 2022
This study developed a method for designing parallel two-degree-of-freedom proportional-integral-derivative controllers for unstable time-delay processes with unknown dynamic equations.
Hsun-Heng Tsai   +4 more
doaj   +1 more source

Interference Alignment Using Difference of Convex-based Beamformer Design for MIMO Interference Channels [PDF]

open access: yesJournal of Electrical and Computer Engineering Innovations, 2019
Background and Objectives: To achieve significant throughput, interference alignment (IA) is an encouraging technique for wireless interference networks.
N. Danesh, M. Sheikhan, B. Mahboobi
doaj   +1 more source

Numerical Method for a Perturbed Risk Model with Proportional Investment

open access: yesMathematics, 2022
In this paper, we study the perturbed risk model with a threshold dividend strategy and proportional investment. The insurance companies are allowed to invest their surplus in a financial market consisting of a risk-free asset and a risky asset in fixed ...
Chunwei Wang, Naidan Deng, Silian Shen
doaj   +1 more source

On the Expected Discounted Penalty Function for the Classical Risk Model with Potentially Delayed Claims and Random Incomes

open access: yesJournal of Applied Mathematics, 2014
We focus on the expected discounted penalty function of a compound Poisson risk model with random incomes and potentially delayed claims. It is assumed that each main claim will produce a byclaim with a certain probability and the occurrence of the ...
Huiming Zhu   +3 more
doaj   +1 more source

Design of Optimal Controllers for Unknown Dynamic Systems through the Nelder–Mead Simplex Method

open access: yesMathematics, 2021
This paper presents an efficient method for designing optimal controllers. First, we established a performance index according to the system characteristics.
Hsun-Heng Tsai   +3 more
doaj   +1 more source

Layout Optimization Algorithms for the Offshore Wind Farm with Different Densities Using a Full-Field Wake Model

open access: yesEnergies, 2023
To decrease the power deficit of a wind farm caused by wake effects, the layout optimization is a feasible way for the wind farm design stage. A suitable optimization algorithm can significantly improve the quality and efficiency of the optimization ...
Zhichang Liang, Haixiao Liu
doaj   +1 more source

A Class of Exponential Penalty Functions [PDF]

open access: yesSIAM Journal on Control, 1974
A class of penalty functions where the trial solutions may be interior or exterior to the feasible region of a nonlinear program is developed. Conditions under which the trial solutions become feasible are presented and a convergence rate is established.
openaire   +3 more sources

Prediction of composite indicators using locally weighted quantile regression

open access: yesNonlinear Analysis, 2018
The main goal of this paper is to improve the existing methods and tools used for solving penalized quantile regression problems. We modified the quantile regression method by implementing the extreme learning machine (ELM) algorithm and features of ...
Jurga Rukšenaitė   +2 more
doaj   +1 more source

Smooth exact penalty functions II: a reduction to standard exact penalty functions [PDF]

open access: yesOptimization Letters, 2015
A new class of smooth exact penalty functions was recently introduced by Huyer and Neumaier. In this paper, we prove that the new smooth penalty function for a constrained optimization problem is exact if and only if the standard nonsmooth penalty function for this problem is exact.
openaire   +2 more sources

Automatic Decrease of the Penalty Parameter in Exact Penalty Function Methods [PDF]

open access: yes, 1995
This paper presents an analysis of the involvement of the penalty parameter in exact penalty function methods that yields modifications to the standard outer loop which decreases the penalty parameter (typically dividing it by a constant).
Marcel Mongeau   +3 more
core   +1 more source

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