Results 51 to 60 of about 3,032,260 (171)

Optimisation of a Third Order System

open access: yesMeasurement + Control, 1971
A general algebraic method of optimising a third order system is presented. The method consists of extending Pontryagin's Maximum Principle to the infinite interval case and reducing the characteristic two point boundary value problem to that of the ...
L. H. Lees
doaj   +1 more source

Cooperative and Non‐Cooperative Solutions in a Dynamic Model of Forest Management

open access: yesNatural Resource Modeling, Volume 39, Issue 3, August 2026.
ABSTRACT This study develops a deterministic finite‐horizon bioeconomic control model linking forest biomass, biodiversity, cumulative harvesting pressure, and disturbance‐motivated expected biodiversity losses. Biodiversity is modeled as a productive state variable that feeds back into biomass growth, while cumulative harvesting pressure records the ...
Seyedalireza Seyedi   +2 more
wiley   +1 more source

Optimal Edge-Based Control for Mitigating SIR Epidemic Spread in Complex Networks

open access: yesMathematics
The spread of infectious diseases on heterogeneous contact networks poses significant challenges for designing effective and cost-efficient intervention strategies.
Yike Li, Ke Ma, Elena Gubar
doaj   +1 more source

Optimal Control of an Age-Structured Pneumonia Transmission Model with Vaccination and Treatment Strategies

open access: yesJambura Journal of Mathematics
This research aims to apply optimal control to model the pneumonia disease using a system of ordinary differential equations. We developed based on the SIR pneumonia epidemic model. We divided the population into two groups: children and the elderly. The
Dwi Lestari   +2 more
doaj   +1 more source

Optimal Management during the Microorganism Culture Based on the Continuous Purifying Effort

open access: yesDiscrete Dynamics in Nature and Society, 2012
This paper deals with the problem of selective harvesting in a chemostat model. Here, we have taken the purifying effort as a dynamic variable and tax as a control instrument.
Xianbin Wu
doaj   +1 more source

The asymptotic Mahler measure of Gaussian periods

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 2, August 2026.
Abstract We construct a sequence of cyclotomic integers (Gaussian periods) of particularly small Mahler measure/height. We study the asymptotics of their Mahler measure as a function of their conductor, to find that the growth rate is the (multivariate) Mahler measure of a family of log Calabi–Yau varieties of increasing dimension.
Gunther Cornelissen   +2 more
wiley   +1 more source

A Data‐Driven Control Framework for HIV Infection Using Projection Recurrent Neural Networks and Singular Value Analysis

open access: yesEngineering Reports, Volume 8, Issue 6, June 2026.
The study introduces a model‐free data‐driven control strategy combining sliding mode control with a projection recurrent neural network to regulate HIV dynamics. The method eliminates dependence on mathematical models, ensures constrained optimal drug dosing, and robustly drives HIV states to a healthy equilibrium despite uncertainty. ABSTRACT In this
Ashkan Zarghami   +2 more
wiley   +1 more source

Optimizing control strategies for monkeypox through mathematical modeling

open access: yesPartial Differential Equations in Applied Mathematics
Monkeypox is a zoonotic viral disease similar to smallpox, has emerged as a major global health concern following the COVID-19 pandemic. This study presents a novel mathematical model aimed at analyzing various epidemiological factors, particularly the ...
Mohamed Baroudi   +4 more
doaj   +1 more source

Optimal Control‐Based Generic Framework for Radiofrequency Pulse Design in MRI

open access: yesNMR in Biomedicine, Volume 39, Issue 6, June 2026.
This paper presents an open‐source Python‐based optimal control RF design framework, which can tackle various problems (short‐T2 selective excitation or B1‐robust excitation/inversion). It features three main methodological contributions: a specific cost is introduced to reduce pulse peak amplitude; consistent integration of various hard constraints on
Emilio Molina   +2 more
wiley   +1 more source

Age-structured optimal control in population economics [PDF]

open access: yes
This paper brings both intertemporal and age-dependent features to a theory of population policy at the macro-level. A Lotkatype renewal model of population dynamics is combined with a Solow/Ramsey economy.
Alexia Prskawetz   +2 more
core  

Home - About - Disclaimer - Privacy