Results 31 to 40 of about 79,746 (274)

Robust-observer design for nonlinear systems with delayed measurements using time-averaged Lyapunov stability criterion

Electronic Research Archive
This paper developed an observer design for a matrix-Lipchitz nonlinear system with measurement delay that can achieve a desired $ {\mathcal{L}}_{2} $ performance in the presence of modeling uncertainties, input disturbance, and measurement noise.
Krishna Vijayaraghavan
doaj   +1 more source

Towards the Ground State of the Supermembrane [PDF]

, 2012
The explicit, near the origin, form of the ground state of the SU(2) supermembrane matrix model is studied. We evaluate the 2nd order terms of the Taylor expansion of the wave-function, which together with the 0th and the 1st order terms can be used to ...
Banks, Claudson, de Wit, de Wit, Erdös, Flume, Fröhlich, Gran, Halpern, Hasler, Hoppe, Hoppe, Hoppe, Hynek, Maciej Trzetrzelewski, Michishita, Michishita, Nicolai, Porrati, Sethi, Smilga, Trzetrzelewski, Wosiek, Yi, Yoji Michishita   +24 more
core   +2 more sources

Incorporation of MoO3 Nanoparticles Into Polypropylene Fibers via Melt Spinning: Investigation of Mechanical, Thermal, and Chromic Properties

Journal of Applied Polymer Science, EarlyView.
Pure PP and PP/MoO3 filaments produced by melt spinning. ABSTRACT Polypropylene (PP) composite fibers containing 0.10, 0.20, and 0.50 wt% molybdenum oxide (MoO3) nanoparticles were produced via melt spinning. In the present study, the effect of this addition on the mechanical, thermal, and chromic properties of the fibers was investigated.
Raphael Borges Magalhães Bergamini, Maria Inês Bruno Tavares, Camila Vicente de Farias, Fabiane Gomes de Oliveira, Karla Mayara Arguelles Simões, Diego de Holanda Saboya Souza   +5 more
wiley   +1 more source

Minimizing surface adhesion of Sylgard 184 for medical applications

Applied Surface Science Advances
Silicones such Sylgard 184 are widely employed in biological applications due to their versatile properties. However, their inherently adhesive surfaces can restrict their application, especially in direct contact with damaged biological tissues ...
Axel Bachoux, Cédric Desroches, Nina Attik, Rodica Chiriac, François Toche, Bérangère Toury   +5 more
doaj   +1 more source

Risk‐aware safe reinforcement learning for control of stochastic linear systems

Asian Journal of Control, EarlyView.
Abstract This paper presents a risk‐aware safe reinforcement learning (RL) control design for stochastic discrete‐time linear systems. Rather than using a safety certifier to myopically intervene with the RL controller, a risk‐informed safe controller is also learned besides the RL controller, and the RL and safe controllers are combined together ...
Babak Esmaeili, Nariman Niknejad, Hamidreza Modares   +2 more
wiley   +1 more source

Stability analysis of fractional-order quaternion-valued neural networks with multiple delays and parameter uncertainties

AIMS Mathematics
This paper proposes a fractional-order quaternion-valued neural network (FOQVNN) model with dual proportional delays, neutral delays, and parameter uncertainties.
Guoqing Jiang, Xiaolan Liu, Lei Wang, Chongwei Zheng   +3 more
doaj   +1 more source

PFC design method for SAC based on the stability theorem of the descriptor system and frequency response fitting

Mechanical Engineering Journal, 2015
Simple adaptive control (SAC) is a control method that maintains control performance despite perturbations of a plant. However, there is a problem in that the vibratory output occurs in the transient response when SAC is applied to a vibration system ...
Masaya TANEMURA, Yuichi CHIDA
doaj   +1 more source

Sensor fault detection and isolation for a class of uncertain nonlinear system using sliding mode observers

Automatika, 2020
Quick and timely fault detection is of great importance in control systems reliability. Undetected faulty sensors could result in irreparable damages. Although fault detection and isolation (FDI) methods in control systems have received much attention in
Farideh Allahverdi, Amin Ramezani, Mehdi Forouzanfar   +2 more
doaj   +1 more source

Body composition and mortality in a cohort study of Chinese patients with hypertrophic cardiomyopathy

Frontiers in Cardiovascular Medicine, 2023
ObjectiveTo analyse the characteristics and mortality of hypertrophic cardiomyopathy (HCM) patients with different body compositions.MethodsIn this study, 530 consecutive patients with HCM at West China Hospital were studied from November 2008 to May ...
Ke Zhou, Jie Xiang, Jie Xiang, Guo-yong Li, Xiao-bo Pu, Li Zhang   +5 more
doaj   +1 more source

Cyclothymic‐hypersensitive temperament in early adolescence: Longitudinal measurement invariance and associations with psychopathology over time

JCPP Advances, EarlyView.
Abstract Background Cyclothymic‐Hypersensitive Temperament (CHT) is characterised by mood instability, interpersonal hypersensitivity, and emotional hyperreactivity, traits frequently observed in general population as well as clinical settings but often eluding strict diagnostic classifications.
Anna Pezzella, Pietro Buono, Nadia Marani, Luisa Almerico, Alessandra Carta, Maria Nobile, Carmela Bravaccio, Gennaro Catone, Vincenzo Paolo Senese, Simone Pisano   +9 more
wiley   +1 more source