Results 71 to 80 of about 7,038 (175)

Pan-Arctic sea ice concentration from SAR and passive microwave [PDF]

The Cryosphere
Arctic sea ice monitoring is a fundamental prerequisite for anticipating and mitigating the impacts of climate change. Satellite-based sea ice observations have been subject to intense attention over the last few decades, with passive microwave (PMW ...
T. Wulf, J. Buus-Hinkler, S. Singha, H. Shi, M. B. Kreiner   +4 more
doaj   +1 more source

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

Vision-driven metasurfaces for perception enhancement

Nature Communications
Metasurfaces have exhibited unprecedented degree of freedom in manipulating electromagnetic (EM) waves and thus provide fantastic front-end interfaces for smart systems.
Tianshuo Qiu, Qiang An, Jianqi Wang, Jiafu Wang, Cheng-Wei Qiu, Shiyong Li, Hao Lv, Ming Cai, Jianyi Wang, Lin Cong, Shaobo Qu   +10 more
doaj   +1 more source

Modelling the Four‐Dimensional Power Line Sag Dynamics by Point Signature in Time‐Series Synthetic‐Aperture Radar Images

High Voltage, EarlyView.
ABSTRACT Power lines in synthetic‐aperture radar (SAR) images are reflected as point signatures, which fluctuate annually in both the azimuth and range directions. A novel framework is proposed in this paper to evaluate the four‐dimensional dynamic status of power line sag using those point signatures in time‐series SAR images.
Sijie Ma, Tao Li, Mahdi Motagh, Yan Liu, Yangmao Wen   +4 more
wiley   +1 more source

Optimal Sub-band Selection Algorithm for Pseudo-color Image Synthesis in Microwave Photonic SAR

Leida xuebao
Microwave Photonic (MWP) radars have remarkably improved traditional microwave radar hardware architectures using photonics devices. With the exceptional physical properties of photonic devices, MWP radars can emit ultra-wideband, high-linearity, high ...
Yu HAI, Ling LIU, Zhongyu LI, Wei PU, Xiaoting WANG, Junjie WU, Wangzhe LI, Ruoming LI, Yulin HUANG, Jianyu YANG   +9 more
doaj   +1 more source

AUGURAL TERRITORIES: On the Prophetic Organizing of the Mid‐range

International Journal of Urban and Regional Research, EarlyView.
Abstract In this article I introduce the concept of augural territories to theorize the urbanism that emerged during pandemic lockdowns. I draw on ethnographic research in Madrid to examine how community‐based responses—including mutual aid networks, food pantries and neighbourhood associations—disrupted the spatial and temporal logics of territorial ...
Alberto Corsín Jiménez
wiley   +1 more source

HoloMine: A Synthetic Dataset for Buried Landmines Recognition Using Microwave Holographic Imaging

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Detection and clearance of landmines is a complex and risky activity that requires advanced remote sensing techniques to reduce the risk to operators in the field.
Emanuele Vivoli, Lorenzo Capineri, Marco Bertini   +2 more
doaj   +1 more source

Synergistic inhibition of macular vascular permeability in diabetic edema: Ginsenoside Rg3 enhances ranibizumab efficacy by targeting angiopoietin‐like protein 4 and vascular endothelial growth factor via neuropilin/RhoA signaling

Journal of Diabetes Investigation, EarlyView.
Molecular mechanism of synergistic antagonism of ANGPTL4 and VEGF by ginsenoside Rg3 combined with ranibizumab, regulating the NRP/RhoA pathway to inhibit macular edema. ABSTRACT Aims This study investigated the molecular mechanisms by which ginsenoside Rg3 combined with ranibizumab alleviates diabetic macular edema (DME), focusing on antagonizing ...
Jiexin Yu, Xingyu Li, Yanli Liu
wiley   +1 more source

Root Structural and Metabolic Plasticity Confers Tolerance to Salinity in Wild Barley Species Grown Under Waterlogging

Plant, Cell &Environment, EarlyView.
ABSTRACT Salinity combined with waterlogging is a major abiotic stress that severely limits crop growth and yield. We investigated species‐specific adaptations to salinity under constant waterlogging conditions in the wild halophytic barleys Hordeum marinum and H. glaucum, compared with the cultivated H. vulgare.
Stanislav Isayenkov, Ljudmilla Borisjuk, Simon Meyer, Alexander Hilo, Dominic Knoch, Tobias Meitzel, Bettina Hause, Yudelsy Antonia Tandron Moya, Hardy Rolletschek, Edgar Peiter, Volodymyr Radchuk   +10 more
wiley   +1 more source