Results 41 to 50 of about 198,602 (291)
A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems
International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam +2 more
wiley +1 more source
Non-perturbative approach to high-index-contrast variations in electromagnetic systems
, 2005 We present a method that formally calculates \emph{exact} frequency shifts of an electromagnetic field for arbitrary changes in the refractive index. The possible refractive index changes include both anisotropic changes and boundary shifts.
Ballentine +20 more
core +1 more source
Repeatability and validity of the PowerRefractor and the Nidek AR600-A in an adult population with healthy eyes [PDF]
, 2003 We assessed the repeatability and validity of the PowerRefractor and the Nidek AR-600A autorefractor. This is the first independent study conducted on adults to evaluate the performance of these instruments in a laboratory setting.
Allen, Peter M. +2 more
core +2 more sources
International Journal of Adaptive Control and Signal Processing, EarlyView.This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley +1 more source
PLoS ONEIntroductionThe increasing prevalence of refractive error has become a serious health issue that needs serious attention. However, there are few studies regarding the prevalence and associated factors of refractive error at the community level in ...
Marshet Gete Abebe +4 more
doaj +1 more source
Ophthalmic disorders among students of School for the Deaf [PDF]
, 2012 Aim: This study aimed at determining the prevalence and pattern of ophthalmic disorders amongstudents of School for the Deaf, Akure, Ondo State, Nigeria.Methodology: This is a cross sectional descriptive study was conducted in October, 2011 aspart of ...
O, Adeniji A +2 more
core +1 more source
, 2013 A cross-sectional study was undertaken in Nakuru, Kenya to assess the prevalence of refractive error and the spectacle coverage in a population aged ≥50 years.
Bastawrous, Andrew +3 more
core +1 more source
Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control
Advanced Engineering Materials, EarlyView.This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian +4 more
wiley +1 more source
Evaluation of the Agreement of Advanced Corneal Explorer with Pentacam and Orbscan in Myopic Individuals with Healthy Corneas [PDF]
مجله دانشگاه علوم پزشکی گرگانBackground and Objective: Evaluating the agreement among various corneal imaging devices is crucial due to their varying technologies in diagnosing corneal parameters.
Mohammad-Hosein Validad +8 more
doaj
Refractive Error Among School Going Children in Solukhumbu, Nepal
Nepalese Medical Journal, 2020 Introduction: Reduced vision among school-going children is a global public health problem and uncorrected refractive error, the main causative factor is most prevalent in under-developed countries.
Ang Tshering Lama Sherpa +3 more
doaj +1 more source