Results 81 to 90 of about 27,214 (278)

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, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

The addition of a humidifier device to a circuit and its impact on home ventilator performance: a bench study

Pulmonology, 2020
Introduction and objectives Humidification and non-invasive ventilation are frequently used together, despite the lack of precise recommendations regarding this practice.
Javier Collada-Carrasco, Cristina Lamolda-Puyol, Manel Luján, Alba Castaño-Menéndez, Miguel Jiménez-Gómez, Ana Hernández-Voth, Javier Sayas-Catalán   +6 more
doaj   +1 more source

Inspiratory conductance: an alternative index of the relationship between inspiratory effort and airflow with potential for clinical use

The Clinical Respiratory Journal, 2011
AbstractIntroduction and Objectives:  There is a need for a measure of airway status that is easier for patients to use. If airflow is briefly occluded at the onset of inspiration, the maximum rate of pressure fall, dP/dtmax can be measured. After the occlusion is released, the maximum rate of change of inspiratory airflow (dF/dtmax) can be measured ...
Stephen, Allen, Ian, Brown, Ahmed, Khattab, Jeff, Bagust   +3 more
openaire   +2 more sources

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Effect of external PEEP in patients under controlled mechanical ventilation with an auto-PEEP of 5 cmH2O or higher. [PDF]

, 2016
In some patients with auto-positive end-expiratory pressure (auto-PEEP), application of PEEP lower than auto-PEEP maintains a constant total PEEP, therefore reducing the inspiratory threshold load without detrimental cardiovascular or respiratory effects.
Amodeo, Guido, Bernardini, Achille, Berruto, Francesco, Filippini, Matteo, Fiorillo, Marialinda, Grazioli, Michele, Lucangelo, U., Marsilia, Paolo F., Minelli, Cosetta, Natalini, Giuseppe, Pennestr\uec, Vincenzo, Peratoner, Alberto, Rosano, Antonio, Testa, Marco, Tinnirello, Andrea, Tuzzo, Daniele, Ventilab, Group   +16 more
core   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

Lung injury promoted by strong inspiratory efforts and breath stacking: impact of ventilation mode

Intensive Care Medicine Experimental
Background Breath stacking, particularly double triggering, is a common patient–ventilator asynchrony during strong inspiratory effort. It can cause excessive tidal volumes and high transpulmonary pressures, contributing to ventilator-induced lung injury
Yasuhiro Norisue, Sunao Usami, Yukie Ito, Muneyuki Takeuchi, Atsushi Kawamura, Ryuichi Nakayama, Naofumi Bunya, Jun Kataoka, Yusuke Endo, Takaharu Itami, Taku Hirokawa, Chihiro Sugita, Hirotaka Takeshima, Airi Takemoto, Miyako Kyogoku, Junki Koike, Shigeki Fujitani, Francesco Mojoli, Taku Miyasho   +18 more
doaj   +1 more source

Optimization techniques in respiratory control system models [PDF]

, 2016
One of the most complex physiological systems whose modeling is still an open study is the respiratory control system where different models have been proposed based on the criterion of minimizing the work of breathing (WOB).
Benito, S., Hernández Valdivieso, Alher Mauricio, Marín Sánchez, Jesús, Mañanas Villanueva, Miguel Ángel, Serna Higuita, Leidy Yanet   +4 more
core   +2 more sources

Diaphragm shear modulus reflects transdiaphragmatic pressure during isovolumetric inspiratory efforts and ventilation against inspiratory loading [PDF]

Journal of Applied Physiology, 2019
The reference method for the assessment of diaphragm function relies on the measurement of transdiaphragmatic pressure (Pdi). Local muscle stiffness measured using ultrafast shear wave elastography (SWE) provides reliable estimates of muscle force in locomotor muscles. This study aimed at investigating whether SWE could be used as a surrogate of Pdi to
Bachasson, Damien, Dres, Martin, Nierat, Marie-Cecile, Gennisson, Jean-Luc, Hogrel, J.Y., Doorduin, J., Similowski, T.   +6 more
openaire   +3 more sources

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

Advanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source