Results 61 to 70 of about 37,526 (264)

Perfusion Bioreactor Culture Incorporating Mechanical Confinement Enhances Mesenchymal Stem Cell Extracellular Vesicle Production and Wound Healing Potential

open access: yesAdvanced Materials Technologies, EarlyView.
Scalable manufacturing challenges and limited potency remain two of the most intransigent issues limiting clinical translation of EV therapeutics. Mechanical cues can induce phenotypic changes and increased vesiculation in EV source cells without the use of extraneous reagents, chemicals, and/or cargo, thereby potentially drastically improving the ...
Emily H. Powsner   +10 more
wiley   +1 more source

A Real-Time Autonomous Gravity Measurement Method for Underwater Gravity-Aided Navigation

open access: yesIEEE Access, 2023
Underwater gravity-assisted navigation is typically employed by submarines as a navigation method when external navigation information is not easily available, which necessitates the acquisition of gravity information through autonomous measurement ...
Wenyu Ai   +3 more
doaj   +1 more source

Fully autonomous underwater spy-vehicle

open access: yesJournal of High School Science, 2023
In recent years, nations have adopted technology as a means to excel. Technological competition among developed countries has begun to filter to the forefront in other fields. Efforts to stay up to date in a geopolitically changing world order include technological advances in military technology.
Ali K Kozluca   +2 more
openaire   +1 more source

On–Off Switchable Micromotors for Use in Steerable Microvehicles

open access: yesAdvanced Robotics Research, EarlyView.
Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson   +3 more
wiley   +1 more source

Finite-time tracking control for autonomous underwater vehicles: An impulsive communication scheme

open access: yesAdvances in Mechanical Engineering, 2017
This article investigates the finite-time dynamical tracking for autonomous underwater vehicles by introducing an impulsive communication scheme. More precisely, the communication of the autonomous underwater vehicles is conducted by the prescribed ...
Chao Ma, Erlong Kang
doaj   +1 more source

UVMS task-priority planning framework for underwater task goal classification optimization

open access: yesFrontiers in Neurorobotics, 2022
This paper presents a task prioritization strategy based on a generic underwater task goal classification transformation for multitasking underwater operational tasks: attitude control, floating manipulation, collision-free motion, especially optimizing ...
Yu-er Gao   +13 more
doaj   +1 more source

Formation Control of Multi‐Agent System with Local Interaction and Artificial Potential Field

open access: yesAdvanced Robotics Research, EarlyView.
This article proposes a local interaction‐based formation control method for Multi‐Agent system, integrating consensus and leader‐follower strategies with a stress response mechanism—artificial potential field to reduce communication overhead and enable obstacle avoidance. Experimental results on triangular, square, and hexagonal formations confirm its
Luoyin Zhao   +3 more
wiley   +1 more source

H control for path tracking of autonomous underwater vehicle motion

open access: yesAdvances in Mechanical Engineering, 2015
In order to simplify the design of path tracking controller and solve the problem relating to nonlinear dynamic model of autonomous underwater vehicle motion planning, feedback linearization method is first adopted to transform the nonlinear dynamic ...
Lin-Lin Wang, Hong-Jian Wang, Li-Xin Pan
doaj   +1 more source

IEEE AUV 96 / Oceanic Engineering Society Institute of Electrical and Electronics Engineers Symposium on Autonomous Underwater Vehicle (AUV) Technology / June 2 -6, 1996 in Monterey, California [PDF]

open access: yes, 1996
Oceanic Engineering Society Institute of Electrical and Electronics Engineers (IEEE) Symposium On Autonomous Underwater Vehicle (AUV) Technology June 2-6, 1996 Advance Program Hosted by the Naval Postgraduate School at the Hyatt Regency Hotel ...

core  

An indirect numerical method for a time-optimal state-constrained control problem in a steady two-dimensional fluid flow

open access: yes, 2018
This article concerns the problem of computing solutions to state-constrained optimal control problems whose trajectory is affected by a flow field. This general mathematical framework is particularly pertinent to the requirements underlying the control ...
Chertovskih, Roman   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy