Results 121 to 130 of about 6,349 (294)

Char Layer Thickness Evolution During Structural Timber Fire Experiment and Final Density Profile

open access: yesFire and Materials, EarlyView.
ABSTRACT This paper evaluates several non‐destructive experimental methods for determining the char layer thickness and its density profile in structural timber samples exposed to standard ISO 834 fire curve experiments. Microwave echo pulse, ultrasonic echo pulse, X‐ray computed tomography, and resistance drilling were evaluated.
Fernando Pérez Pérez   +4 more
wiley   +1 more source

Millimeter Wave Radar: Principles and Applications In: Millimeter Wave Technology in Wireless PAN, LAN, and MAN

open access: yes, 2008
F. J. Yanovsky, “Millimeter Wave Radar: Principles and Applications,” In Millimeter Wave Technology in Wireless PAN, LAN, and MAN, Editors: Shao-Qiu Xiao, Ming-Tuo Zhou, Yan Zhang, Chapter 10, pp.305-376, ISBN: 9780849382277, Auerbach Publications CRC ...
Yanovsky, Felix
core  

Multi‐synergistic strategy for dual‐sensing conductive hydrogels capable of simultaneous strain and temperature monitoring

open access: yesFlexMat, EarlyView.
In this study, a multicomponent synergistic strategy is utilized, which capitalizes on the “intersection” of multiple functional influencing factors to achieve the successful development of a multifunctional hydrogel. Through the construction of a unique three‐dimensional dynamic cross‐linked network, the material combines mechanical strength ...
Wei Li   +10 more
wiley   +1 more source

Monitoring and assessment for obstructive sleep apnea

open access: yesFlexMat, EarlyView.
This review systematically classifies Obstructive Sleep Apnea (OSA) monitoring indicators into three categories: physical, biochemical, and electrophysiological indicators, and lists several methods for each category. Abstract Obstructive sleep apnea (OSA) is a common chronic sleep‐disordered breathing disease characterized by recurrent upper airway ...
Yaowen Xu   +6 more
wiley   +1 more source

Short-Range Millimeter-Wave Radar Perception in a Polar Environment

open access: yes, 1999
–Autonomous vehicle operations in Antarctica challenge robotic perception. Flying ice and snow, changing illumination due to low sun angles and lack of contrast degrade stereo and laser sensing.
Chheda, S   +5 more
core  

Facet‐engineered BiSI nanorods for intelligent distinguishing detection of NO2/H2S mixed gas

open access: yesInfoMat, EarlyView.
Mixed toxic gases such as NO2 and H2S can threaten safety in coal mines and industrial settings, but it is still difficult to monitor them accurately with a simple sensor. In this work, we improved a BiSI‐based room‐temperature gas sensor through crystal facet engineering and combined it with machine learning so that one sensor could distinguish mixed ...
Zhenze Zhou   +4 more
wiley   +1 more source

Advanced Bistatic and Multistatic SAR Concepts and Applications

open access: yes, 2006
Tutorial on Bistatic and Multistatic Synthetic Aperture Radar from EUSAR 2006 ...
Krieger, Gerhard
core  

Urban traffic congestion alleviation system based on millimeter wave radar and improved probabilistic neural network

open access: yesIET Radar, Sonar & Navigation
The millimeter‐wave radar sensor is widely used for urban traffic surveillance because of its weather resistance and high detection accuracy. Methods such as fuzzy theory, pattern recognition, and artificial neural networks have been integrated into the ...
Bo Yang   +4 more
doaj   +1 more source

Assessing plant water status: Part 2 – Non‐destructive and remote sensing approaches

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract Precise, real time and non‐destructive assessment of plant water status is important for advancing plant physiological understanding, optimizing water usage, improving crop resilience and supporting precision agriculture in the face of increasingly variable climatic conditions.
Naila Farooq   +7 more
wiley   +1 more source

A Millimeter-Wave Indoor Backscattering Channel Model for Environment Mapping

open access: yes, 2017
International audienceIn this communication, we introduce a channel model for personal radar applications where a millimeter-wave (mm-wave) massive array is required to scan the environment and to reconstruct a map of it.
Dardari, Davide   +9 more
core   +1 more source

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