Results 51 to 60 of about 1,734 (183)

On-demand prediction of low-frequency average sound absorption coefficient of underwater coating using machine learning

Results in Engineering
This study proposes an underwater coating with sound absorption ability in the middle-to-low frequency range and establishes an acoustic theoretical model combining the equivalent medium theory and the transfer matrix method.
Nansha Gao, Mou Wang, Xiao Liang, Guang Pan   +3 more
doaj   +1 more source

Application of Cooperative Control of Discrete‐Time Nonlinear Multi‐Agent Systems Based on Extended Kalman Unknown Input Observer

Vector: The Journal of Engineering, Volume 2027, Issue 1, January/December 2027.
This study is concerned with the application of consensus control to a class of discrete‐time nonlinear multi‐agent systems with unknown inputs and additive noise. The aim is to design an extended Kalman unknown input observer (EKUIO) such that the state vector of a discrete‐time nonlinear system can be estimated, additive noise can be mitigated, and ...
Yan Ren, Kai Weng, Liyun Zhao, Junru Shan   +3 more
wiley   +1 more source

Cross‐scale Material‐Structure Synergy for 2D Metamaterials: Toward Customizable Intelligent Electromagnetic Manipulation in Multiphysics Fields

Advanced Science, Volume 13, Issue 58, 19 October 2026.
Recent advances in metasurface‐enabled low‐observable technologies are reviewed from the perspective of cross‐scale material–structure synergy. Electromagnetic, thermal, optical, and acoustic stealth are highlighted together with dynamic tuning, programmable coding, data‐driven inverse design, artificial intelligence, multispectral compatibility, and ...
Shuhao Wang, Xing Yang, Liping Liu, Yang Peng, Yangyang Wang, Hualiang Lv   +5 more
wiley   +1 more source

Effects of Regular Waves on Propulsion Performance of Flexible Flapping Foil

Applied Sciences, 2018
The objective of the present study is to analyze the effects of waves on the propulsive performance and flow field evolution of flexible flapping foil, and then offer a way to take advantage of wave energy.
Peng Liu, Yebao Liu, Shuling Huang, Jianfeng Zhao, Yumin Su   +4 more
doaj   +1 more source

Evaluating Environmental DNA for Pacific Salmon Spawner Enumeration Across Diverse Freshwater Systems

Aquaculture, Fish and Fisheries, Volume 6, Issue 5, October 2026.
ABSTRACT Advancing environmental DNA (eDNA) beyond species detection could provide scalable tools for estimating fish abundance, but the predictive relationships between eDNA concentration and abundance are often system‐specific and influenced by highly variable environmental conditions.
Brock T. Burgess, Josephine C. Iacarella
wiley   +1 more source

Estimation of Error Margin in the Quantification of Large Wood Volumes in River From In Situ and UAV Measurements

Earth Surface Processes and Landforms, Volume 51, Issue 10, October 2026.
Large wood (LW) plays a key role in river dynamics and biodiversity, but quantifying its volume and budget remains challenging. This study compared in situ and UAV‐based measurements of LW jams in two Gaspé Peninsula rivers (Québec, Canada), highlighting strong variability mainly due to operator bias. A new methodology reduced this variability, leading
Maxime Gillet, Maxime Boivin, Maxime Maltais, Félix Lachapelle, Thomas Buffin‐Bélanger   +4 more
wiley   +1 more source

Overview of Vehicle Optical Wireless Communications

IEEE Access, 2020
Effective information transmission between vehicles has become one of the solutions to improve road safety. Based on the huge advantages of optical wireless data transmission technology, this article summarizes the research status of unmanned vehicles in
Hongye Mei, Jupeng Ding, Jiong Zheng, Xifeng Chen, Wenwen Liu   +4 more
doaj   +1 more source

Laser‐Induced Graphene‐Based Resistive Leaf Wetness Sensors for Pesticide Spray Deposition

Global Challenges, Volume 10, Issue 10, October 2026.
A laser‐induced graphene leaf wetness sensor is fabricated by CO2 laser‐patterning interdigitated electrodes on flexible polyimide and adding silver‐paste contacts through a shadow mask. Calibration with multiple pesticide formulations and tap water shows decreasing resistance with increasing deposited volume, while spray tests demonstrate close ...
Nathan M. Jared, Kristi K. Bez, Roham G. Goudarzi, Griffin Ellis, Krishangee Bez, Emily A. Smith, Jonathan C. Claussen   +6 more
wiley   +1 more source

A Study of Sonar Image Stabilization of Unmanned Surface Vehicle Based on Motion Sensor for Inspection of Underwater Infrastructure

Remote Sensing, 2020
In order to detect damage to underwater infrastructure for inspection, an expensive survey by a diver is generally conducted, but it carries the risk of accidents.
Youngseok Kim, Jaesuk Ryou
doaj   +1 more source

Unmanned Aerial Systems for Corrosion Detection: Multi‐Sensor Technologies, Challenges, and Opportunities for Next‐Generation Inspection

Quality and Reliability Engineering International, Volume 42, Issue 6, Page 3565-3583, October 2026.
ABSTRACT Corrosion remains a critical threat to the integrity and service life of infrastructure in industries such as oil, gas, construction, renewable energy, and transportation. Traditional inspection methods, being labor‐intensive, hazardous, and often subjective, fall short in addressing modern inspection demands.
Alhossein Alharbi, Yunes Alqudsi, Alhasan Ali Alharbi, Mohammed Basheer Mohiuddin   +3 more
wiley   +1 more source