Time-delayed feedback control of breathing localized structures in a three-component reaction-diffusion system.

Philos Trans A Math Phys Eng Sci

Institute for Theoretical Physics, University of Münster, Wilhelm-Klemm-Strasse 9, 48149 Münster, Germany

Published: October 2014

The dynamics of a single breathing localized structure in a three-component reaction-diffusion system subjected to time-delayed feedback is investigated. It is shown that variation of the delay time and the feedback strength can lead either to stabilization of the breathing or to delay-induced periodic or quasi-periodic oscillations of the localized structure. A bifurcation analysis of the system in question is provided and an order parameter equation is derived that describes the dynamics of the localized structure in the vicinity of the Andronov-Hopf bifurcation. With the aid of this equation, the boundaries of the stabilization domains as well as the dependence of the oscillation radius on delay parameters can be explicitly derived, providing a robust mechanism to control the behaviour of the breathing localized structure in a straightforward manner.

Download full-text PDF

Source
http://dx.doi.org/10.1098/rsta.2014.0014DOI Listing

Publication Analysis

Top Keywords

localized structure
16
breathing localized
12
time-delayed feedback
8
three-component reaction-diffusion
8
reaction-diffusion system
8
localized
5
feedback control
4
breathing
4
control breathing
4
localized structures
4

Similar Publications

The optimal method for three-dimensional thermal imaging within cells involves collecting intracellular temperature responses while simultaneously obtaining corresponding 3D positional information. Current temperature measurement techniques based on the photothermal properties of quantum dots face several limitations, including high cytotoxicity and low fluorescence quantum yields. These issues affect the normal metabolic processes of tumor cells.

View Article and Find Full Text PDF

Reaccreditation and Pathways Recognition Experiences of Small Local and Tribal Health Departments.

J Public Health Manag Pract

November 2024

Author Affiliations: Prevention Research Center, Brown School, Washington University in St. Louis, St. Louis, Missouri (Allen and Crenshaw); Department of Health Policy and Organization, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama (Fifolt); School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama (Erwin); Research and Evaluation, Public Health Accreditation Board, Alexandria, Virginia (Lang, Belflower Thomas, and Kuehnert); and Lipstein Distinguished Professor of Public Health, Prevention Research Center, Brown School, and Alvin J. Siteman Cancer Center and Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine; Washington University in St. Louis, St. Louis, Missouri (Brownson).

Context: This paper describes experiences and views of leadership teams from 4 small local health departments (LHDs) seeking Public Health Accreditation Board (PHAB) reaccreditation or Pathways Recognition using PHAB Standards & Measures Version 2022. The Pathways program launched in 2022 provides additional supports for improvement of public health practice.

Objective: Given the need to accelerate accreditation among small health departments, the purpose of this study is to share small health departments' strategies for overcoming accreditation challenges and actionable advice for use by other health departments.

View Article and Find Full Text PDF

This paper aims to reveal the changing characteristics of the contribution rates of different production factors in China since the reform and opening up from two dimensions: stage and space. The study used national data from 1978 to 2021 and provincial data from 2000 to 2020, combined with methods such as C-D production function and spatial econometrics for analysis. Research has found that: (1) In terms of stage characteristics, during the structural adjustment stage (1978-1998), economic growth mainly relies on capital and labor input, and the contribution rate of land factors gradually decreases.

View Article and Find Full Text PDF

DCFE-YOLO: A novel fabric defect detection method.

PLoS One

January 2025

Faculty of Computer and Software Engineering, Huaiyin Institute of Technology, Huai'an, Jiangsu, China.

Accurate detection of fabric defects is crucial for quality control in the textile industry. However, the task of fabric defect detection remains highly challenging due to the complex textures and diverse defect patterns. To address the issues of inaccurate localization and false positives caused by complex textures and varying defect sizes, this paper proposes an improved YOLOv8-based fabric defect detection method.

View Article and Find Full Text PDF

Quadruple perovskite oxides have received extensive attention in electronics and catalysis, owing to their cation-ordering structure and intriguing physical properties. However, their repertoires still remain limited. In particular, piezoelectricity from quadruple perovskites has been rarely reported due to the frustrated symmetry-breaking transition in A-site-ordered perovskite structures, disabling their piezoelectric applications.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!