Results 31 to 40 of about 6,656 (263)

End-to-End AUV Motion Planning Method Based on Soft Actor-Critic

Sensors, 2021
This study aims to solve the problems of poor exploration ability, single strategy, and high training cost in autonomous underwater vehicle (AUV) motion planning tasks and to overcome certain difficulties, such as multiple constraints and a sparse reward
Xin Yu, Yushan Sun, Xiangbin Wang, Guocheng Zhang   +3 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Adaptive Disturbance-Observer-Based Continuous Sliding Mode Control for Small Autonomous Underwater Vehicles in the Trans-Atlantic Geotraverse Hydrothermal Field with Trajectory Modeling Based on the Path

Journal of Marine Science and Engineering, 2022
Considering intense hydrothermal activities and rugged topography in a near-bottom environment of the trans-Atlantic geotraverse (TAG) hydrothermal mound, a small autonomous underwater vehicle (S-AUV) will suffer from time-varying disturbances, model ...
Guofang Chen, Yihui Liu, Ziyang Zhang, Yufei Xu   +3 more
doaj   +1 more source

Bio‐Inspired Biopolymeric Implantable Platform for Localized and Sustained Drug Delivery in Solid Tumor Treatment

Advanced Functional Materials, EarlyView.
A bio‐inspired biopolymeric implantable drug delivery platform enables localized and sustained release of 7‐ethyl‐10‐hydroxycamptothecin (SN‐38) in solid tumor treatment. The three‐dimensional (3D) structured crosslinked‐chitosan implants are fabricated via 3D‐printed molds and provide drug release over 3 months, significantly inhibiting tumor growth ...
Mercedes Lozano‐Garcia, Constantine Vogiatzis, Alejandra Planells‐Devesa, Emre Dikici, Caroline Vieira Maluf, Vasudev Vivekanand Nayak, Paulo G. Coelho, Lukasz Witek, Alicia Bilbao, Daniel Bilbao, Prasoon Mohan, Sapna Deo, Sylvia Daunert   +12 more
wiley   +1 more source

Neural Network-Based Adaptive Sigmoid Circular Path-Following Control for Underactuated Unmanned Surface Vessels under Ocean Disturbances

Journal of Marine Science and Engineering, 2023
This study describes a circular curve path-following controller for an underactuated unmanned surface vessel (USV) experiencing unmodeled dynamics and external disturbances. Initially, a three degrees of freedom kinematic model of the USV is proposed for
Yi Ren, Lei Zhang, Wenbin Huang, Xi Chen
doaj   +1 more source

Fiber‐reinforced Liquid Metal Composites With Automated Circuit Fabrication for Structurally‐Integrated Power Transfer

Advanced Functional Materials, EarlyView.
Fiber‐reinforced liquid metal composites (FibRe LMCs) are introduced that combine GPa‐scale structural performance with digitally programmable electrical conductivity. Through automated CNC activation, conductive pathways and wireless power transfer circuits are fabricated directly within load‐bearing composites, enabling structurally integrated ...
John Joyce, Charles K. Van Horn, Nathaniel J. Valentin, Angelica Phan, Michael D. Bartlett, Edward J. Barron III   +5 more
wiley   +1 more source

Trend prediction of the 3D thermocline’s lateral boundary based on the SVR method

EURASIP Journal on Wireless Communications and Networking, 2018
In recent years, with the use of the float-based wireless sensor network in the Argo project, a large amount of ocean data has been obtained. These data can be applied to analyze the oceanic thermocline, and the forecasting trend of the thermocline ...
Hongde Qin, Chong Wang, Yu Jiang, Zhongchao Deng, Wei Zhang   +4 more
doaj   +1 more source

Hydrogels Augmented With Artificial Sweeteners can Inhibit Multidrug‐Resistant Acinetobacter baumannii Growth and Biofilm Formation While Demonstrating Safety in Pre‐Clinical Pilot Human Trials

Advanced Healthcare Materials, EarlyView.
Using PVA–borax hydrogels as carriers for off‐the‐shelf artificial sweeteners to fight multidrug‐resistant A. baumannii. These soft, biocompatible hydrogels rapidly reduce bacterial viability within multidrug‐resistant A. baumannii biofilms by more than 99% within one hour and sustain antimicrobial activity over time, while demonstrating safety in both
Jie Han, Mohamed Soliman, Bin Zhang, Dominika Krawiel, Ronan R. McCarthy   +4 more
wiley   +1 more source

An evaluation of path-planning methods for autonomous underwater vehicle based on terrain-aided navigation

International Journal of Advanced Robotic Systems, 2019
This article presents a comparison of different path-planning algorithms for autonomous underwater vehicles using terrain-aided navigation. Four different path-planning methods are discussed: the genetic algorithm, the A* algorithm, the rapidly exploring
Zheng Cong, Ye Li, Yanqing Jiang, Teng Ma, Yusen Gong, Rupeng Wang, Haowei Wu   +6 more
doaj   +1 more source

Disturbance-Observer-Based Prescribed Performance Fault-Tolerant Trajectory Tracking Control for Ocean Bottom Flying Node

IEEE Access, 2019
The development of marine petroleum exploitation becomes an important part of marine economy development gradually. Ocean bottom flying node (OBFN) is a kind of autonomous underwater vehicle which can explore marine petroleum and natural gas in large ...
Hongde Qin, Zheyuan Wu, Yanchao Sun, Hui Chen   +3 more
doaj   +1 more source