Results 51 to 60 of about 287,034 (314)

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 modulatory effect of electrical stimulation on the excitability of the corticospinal tract varies according to the type of muscle contraction being performed

Frontiers in Human Neuroscience, 2014
Afferent input caused by electrical stimulation of a peripheral nerve increases corticospinal excitability during voluntary contractions, indicating that proprioceptive sensory input arriving at the cortex plays a fundamental role in modulating ...
Kei eSaito, Kei eSaito, Kenichi eSugawara, Shota eMiyaguchi, Takuya eMatsumoto, Hikari eKirimoto, Hiroyuki eTamaki, Hiroyuki eTamaki, Hideaki eOnishi, Hideaki eOnishi   +9 more
doaj   +1 more source

Functional Electrical Stimulation mediated by Iterative Learning Control and 3D robotics reduces motor impairment in chronic stroke

, 2012
Background: Novel stroke rehabilitation techniques that employ electrical stimulation (ES) and robotic technologies are effective in reducing upper limb impairments.
Cai, Z, Freeman, C T, Katie L Meadmore, Hughes, A-M, Chris T Freeman, Eric Rogers, Meadmore, K L, Zhonglun Cai, Tong, D, Burridge, J H, Ann-Marie Hughes, Rogers, E, Jane H Burridge, Daisy Tong   +13 more
core   +1 more source

Data-driven control design for neuroprotheses: a virtual reference feedback tuning (VRFT) approach [PDF]

, 2004
This paper deals with design of feedback controllers for knee joint movement of paraplegics using functional electrical stimulation (FES) of the paralyzed quadriceps muscle group.
F. Previdi, PREVIDI, Fabio (ORCID:0000-0002-3713-7727), SCHAUER, THOMAS, Hunt, K. J., Savaresi, S., Savaresi, S. M., S.M. Savaresi, Previdi, F., Savaresi, S.M., Hunt, K.J., Hunt, K., T. Schauer, HUNT, KEN J., K.J. Hunt, SAVARESI, SERGIO MATTEO, Schauer, T.   +15 more
core   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Feedback Method of Force Controlled by Electrical Muscle Stimulation Based on Infrared Optical Sensing

Frontiers in Virtual Reality, 2022
The goal of the study was to develop a system that can adjust the electrical muscle stimulation parameters for individuals when sharing experiences with stimulation by sensing the degree of muscle contraction during electrical stimulation.
Satoshi Hosono, Tamon Miyake, Shota Miyake, Emi Tamaki, Emi Tamaki   +4 more
doaj   +1 more source

Neck atonia with a focal stimulation-induced seizure arising from the SMA: pathophysiological considerations.

, 2012
A 28-year-old patient with pharmacoresistant non-lesional right frontal epilepsy underwent extra-operative intracranial EEG recordings and electrical cortical stimulation (ECS) to map eloquent cortex.
Nachev, P, McEvoy, Andrew W., Wehner, T, Kovac, S, Diehl, B, Duncan, JS, Duncan, John S., Rodionov, Roman, Toms, Nathan, Toms, N, Diehl, Beate, Kovac, Stjepana, Wehner, Tim, Scott, Catherine, Nachev, Parashkev, Scott, C, Rodionov, R, McEvoy, AW   +17 more
core   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

Advanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann, Ryan Kalgreen, Laura M. Comella   +2 more
wiley   +1 more source