Results 81 to 90 of about 2,628 (189)

Portable Radar for Noncontact Heart Rate Monitoring and Estrus Detection in Dairy Cows

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
This study introduces a portable radar system for real‐time monitoring of respiratory and heart rates in dairy cows. It uses millimeter‐wave Frequency Modulated Continuous Wave (FMCW) radar to perform noncontact physiological sensing, reducing behavioral disturbance. The radar system's design prioritizes portability, cost‐effectiveness, and robustness,
Yingxiu Li, Ranran Wang, Fuyang Tian, Yudao Li, Zhuolin Wang, Yuxin Yu, Liping Ma, Xin Lu   +7 more
wiley   +1 more source

Calculating the Interconnection Limit from a Comprehensive Voltage Evaluation for Distribution Systems with Large Distributed Energy Resources

IEEJ Transactions on Electrical and Electronic Engineering, EarlyView.
Japan is pursuing power source decarbonization and is thus reducing fuel‐based thermal power generation while promoting renewable energy resource use. Given the expected power fluctuations, this transition will require novel voltage management and control methods.
Satoshi Uemura, Koushichi Nemoto, Yasuhiro Hayashi   +2 more
wiley   +1 more source

A perspective on automated rapid eye movement sleep assessment

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Rapid eye movement sleep is associated with distinct changes in various biomedical signals that can be easily captured during sleep, lending themselves to automated sleep staging using machine learning systems. Here, we provide a perspective on the critical characteristics of biomedical signals associated with rapid eye movement sleep and how ...
Mathias Baumert, Huy Phan
wiley   +1 more source

Imidazole‐Extended Non‐Fullerene Acceptors With Tunable Crystallinity for Ultrasensitive, Ultrafast Near‐Infrared Organic Photodetectors

Aggregate, Volume 7, Issue 8, August 2026.
A two‐dimensional extended imidazole acceptor‐based organic photodetector delivers a lower dark current of 2.54 × 10−12 A/cm−2, peak detectivity of 1.08 × 1013 Jones, the widest linear dynamic range of 167.8 dB, and ultrafast response times of 307/319 ns. ABSTRACT Emerging optoelectronic tasks such as night‐vision imaging and wearable health monitoring
Chengwei Shan, Zihao Li, Han Gao, Yuang Fu, Zhaojin Wang, Xinhui Lu, Xianyong Zhou, Bin‐Bin Yu, Philip C. Y. Chow, Aung Ko Ko Kyaw, Chang Liu, Tianshuo Zhao, Hanjian Lai   +12 more
wiley   +1 more source

Spatial Information-Theoretic Optimal LPI Radar Waveform Design. [PDF]

Entropy (Basel), 2022
Chen J, Wang J, Zhang Y, Wang F, Zhou J.
europepmc   +1 more source

Biodegradable, Biologically Safe Nanogenerators for Self‐Powered Bio‐Integrated Systems

Small Structures, Volume 7, Issue 8, August 2026.
Biodegradable TENGs, PENGs, and hybrid systems convert biomechanical motions into electrical signals while safely degrading after use. This review highlights their working mechanisms, biodegradable material platforms, and wearable and implantable bio‐integrated applications, including motion and respiration monitoring, biosignal detection, electrical ...
Sungkeun Han, Hye‐Min Lee, Won Bae Han, Venkata Ramesh Naganaboina, Hanjun Ryu, Suk-Won Hwang   +5 more
wiley   +1 more source

Cognitive Radar Waveform Optimization Based on Mutual Information and Kalman filtering

Entropy, 2018
A new strategy to optimizing the waveforms of cognitive radar under transmitted power constraint is presented. Our scheme is to enhance the performance of target estimation by minimizing the MSE (mean-square error) of the estimates of target scattering ...
Yu Yao, Junhui Zhao, Lenan Wu
doaj   +1 more source

Lean Neural Networks for Autonomous Radar Waveform Design. [PDF]

Sensors (Basel), 2022
Baietto A, Boubin J, Farr P, Bihl TJ, Jones AM, Stewart C.   +5 more
europepmc   +1 more source

Enhanced Retrieval of Spring Snow Depth Over Pan‐Arctic Sea Ice From AMSR2 Observations for 2013–2023 Using Multi‐Model Machine Learning

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Snow on sea ice modulates the Earth's radiation budget and sea ice mass balance, yet satellite retrievals of Arctic snow depth remain subject to substantial algorithmic uncertainty. We develop a multi‐model machine learning (ML) framework for retrieving spring snow depth over Arctic sea ice from Advanced Microwave Scanning Radiometer 2 (AMSR2).
Yi Zhou, Chentong Zhang, Alek Petty, Xianwei Wang, Ruibo Lei, Wenxuan Liu, Yu Zhang   +6 more
wiley   +1 more source

SWOT High‐Rate Raster Data Reveals Antarctic Ice Shelf Motion and Change in Response to Ocean and Ice Dynamics

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The NASA/CNES Surface Water and Ocean Topography (SWOT) swath‐mapping radar altimetry satellite mission, launched in December 2022, provides repeat‐track coverage to about ±78.2° latitude every 21 days, sampling many of Antarctica's most dynamic ice shelves that play key roles in constraining mass loss from the grounded ice sheet ...
S. L. Howard, Z. S. Katz, L. Padman, M. R. Siegfried, E. Abrahams, T. M. Snow   +5 more
wiley   +1 more source