Results 51 to 60 of about 353,662 (303)
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
Fan Stage Design and Performance Optimization for Low Specific Thrust Turbofans
International Journal of Turbomachinery, Propulsion and Power, 2023 In modern turbofan engines, the bypass section of the fan stage alone provides the majority of the total thrust required in cruise, and the size of the fan has a considerable effect on the overall engine weight and nacelle drag.
Oliver Sjögren +3 more
doaj +1 more source
Aggregation and sedimentation of active Brownian particles at constant affinity
, 2018 We study the motility-induced phase separation of active particles driven through the interconversion of two chemical species controlled by ideal reservoirs (chemiostats).
Chatterjee, Arkya +2 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
Frontiers in Sports and Active Living, 2023 IntroductionImproving swimming performance involves assessments of biomechanical variables of the stroke, and it can be achieved using semi-tethered swimming tests. The aim of this study was thus to investigate the associations between load-velocity (L-V)
Yannis Raineteau +8 more
doaj +1 more source
Identifying candidates for targeted gait rehabilitation: better prediction through biomechanics-informed characterization [PDF]
, 2017 BACKGROUND: Walking speed has been used to predict the efficacy of gait training; however, poststroke motor impairments are heterogeneous and different biomechanical strategies may underlie the same walking speed.
Awad, Louis N. +2 more
core
A new propulsion concept for high propulsive hydrodynamic efficiency
Ocean Engineering, 2022 A novel marine propulsor concept is presented for high hydrodynamic efficiency. Optimum performance is sought by thrust-producing counter-flapping foils cyclically oscillating along a closed trajectory. The thrusting device exhibits low propulsion loading and low viscous losses.
Martio, Jussi +3 more
openaire +1 more source
Advanced Engineering Materials, EarlyView.Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat +6 more
wiley +1 more source
Study on Applicability of Energy-Saving Devices to Hydrogen Fuel Cell-Powered Ships
Journal of Marine Science and Engineering, 2022 The decarbonisation of waterborne transport is arguably the biggest challenge faced by the maritime industry presently. By 2050, the International Maritime Organization (IMO) aims to reduce greenhouse gas emissions from the shipping industry by 50 ...
Callum Stark +5 more
doaj +1 more source
Efficiency of fish propulsion [PDF]
Bioinspiration & Biomimetics, 2015 It is shown that the system efficiency of a self-propelled flexible body is ill-defined unless one considers the concept of quasi-propulsive efficiency, defined as the ratio of the power needed to tow a body in rigid-straight condition over the power it needs for self-propulsion, both measured for the same speed. Through examples we show that the quasi-
Maertens, Audrey +2 more
openaire +5 more sources