Results 61 to 70 of about 17,770 (216)

UWB-gestures, a public dataset of dynamic hand gestures acquired using impulse radar sensors

Scientific Data, 2021
Measurement(s) hand gesture • voluntary movement behavior Technology Type(s) ultra-wideband impulse radar • Imaging Technology Factor Type(s) type of hand gesture • participant Sample Characteristic - Organism Homo sapiens Sample Characteristic ...
Shahzad Ahmed, Dingyang Wang, Junyoung Park, Sung Ho Cho   +3 more
doaj   +1 more source

Wearable Tailored Passive Radiative Cooling Textile for Flexible Electronic Integration

Advanced Science, EarlyView.
A scalable, additive‐free wearable tailored passive radiative cooling textile (WRCT) with hierarchically structured fibers delivers exceptional thermal management, combining >95% solar reflectance, 0.96 mid‐infrared emissivity, and ultralow thermal conductivity (0.041 W/m·K).
Lung Chow, Jianpeng Zhang, Zehua Peng, Denglin Ye, Binbin Zhang, Jian Li, Wooyoung Park, Chentao Du, Xingcan Huang, Chun Ki Yiu, Yuze Qiu, Jingkun Zhou, Zhenlin Chen, Yuyu Gao, Weibin Zhu, Pengcheng Wu, Guangyao Zhao, Qiang Zhang, Yuan Guo, Zuowei Sun, Zhan Shen, Shuaiqi Ren, Sang Min Won, Jiyu Li, Xinge Yu   +24 more
wiley   +1 more source

THE MEASUREMENT OF THE DIELECTRIC CONSTANT OF UNDERGROUND CLAY PIPES [PDF]

European Journal of Materials Science and Engineering, 2020
Many of the Underground utilities in the United States are in need of rehabilitation. It is then necessary to find ways to improve and measure intrastructural characteristics.
David MCGRAW Jr.
doaj   +1 more source

Precise Tailoring 3D Printed In Situ Toughening Low‐k Microwave Transparent Structure via Thiol‐acrylate Chain Transfer Behavior

Advanced Science, EarlyView.
An in situ thiol–acrylate chain transfer‐mediated toughening strategy is introduced for Digital Light Processing (DLP) printing. Benefiting from its excellent printability, a printed gyroid lattice‐filled plate (100 µm wall thickness) achieves 92% transmittance at 10 GHz under a 50° incidence angle following structural optimization. ABSTRACT The unique
Ce Bian, Kai Zheng, Ruoyu Chen, Wansong Gu, Guanxiang Zhong, Difei Liang, Longjiang Deng, Hetao Chu   +7 more
wiley   +1 more source

High Repetition Rate in Ultra-Wideband Radar Systems

Известия высших учебных заведений России: Радиоэлектроника, 2016
Low and high repetition rate work modes for ultra-wideband radar are considered. The ultra-short pulse packs usage for ultra-wideband radar systems is proposed. The advantages, disadvantages and probable fields of usage of such method are shown.
O. S. Mironov
doaj  

Performance Analysis and Design Strategy for a Second-Order, Fixed-Gain, Position-Velocity-Measured (α-β-η-θ) Tracking Filter

Applied Sciences, 2017
We present a strategy for designing an α - β - η - θ filter, a fixed-gain moving-object tracking filter using position and velocity measurements.
Kenshi Saho, Masao Masugi
doaj   +1 more source

The design and realization of uniplanar CPW fed PICA slot antennas [PDF]

, 2008
In modern wireless communication system design, antennas with wide impedance bandwidth are desirable for numerous reasons. An antenna with a wide impedance bandwidth may be used for transmission and reception of multiple narrowband services in a multi ...
Ghorbani, K, Gupta, R, John, S, Pell, B, Rowe, W, Sulic, E, Zhang, K   +6 more
core   +1 more source

In Situ Polyurea Integration for Self‐Healing, Durable Transparent Electromagnetic‐Interference Shielding Film

Advanced Science, EarlyView.
A steric‐hindrance molecular engineering strategy uses dimethyl maleate (DMM) to convert poly(1,4‐butanediol) bis(4‐aminobenzoate) (PBDAB) into a precursor with reduced reactivity via Michael addition, thereby retarding the curing process to form a transparent, ultraflexible, and self‐healable secondary‑amine polyurea (PuSA) with a crosslinked network.
Sinan Zheng, Shanyu Zhao, Gengjiang Yao, Yue Liu, Fei Pan, Mingrui Han, Zecheng Li, Shanbo Li, Jiurong Liu, Na Wu, Zhihui Zeng   +10 more
wiley   +1 more source

Ultra Wideband radar-based gait analysis for gender classification using artificial intelligence

Array
Gender classification plays a vital role in various applications, particularly in security and healthcare. While several biometric methods such as facial recognition, voice analysis, activity monitoring, and gait recognition are commonly used, their ...
Adil Ali Saleem, Hafeez Ur Rehman Siddiqui, Muhammad Amjad Raza, Sandra Dudley, Julio César Martínez Espinosa, Luis Alonso Dzul López, Isabel de la Torre Díez   +6 more
doaj   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

Advanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source