Results 141 to 150 of about 89,842 (301)

Sinusoidal Fitting Decomposition for Instantaneous Characteristic Representation of Multi-Componential Signal

Sensors
The research on how to effectively extract the instantaneous characteristic components of non-stationary signals continues to be both a research hotspot and a very challenging topic.
Donghu Nie, Xin Su, Gang Qiao
doaj   +1 more source

An Improved Time-Frequency Analysis Method for Instantaneous Frequency Estimation of Rolling Bearing

, 2018
Instantaneous frequency estimation of rolling bearing is a key step in order tracking without tachometers, and time-frequency analysis method is an effective solution.
Mingyi Chen, Wanying Ruan, Zengqiang Ma, Xiang Li   +3 more
core   +1 more source

All‐Polyimide‐Mediated Liquid Metal Assembly on Aerogels for Breathable and Robust Electronic Skins

Advanced Materials, EarlyView.
An all‐polyimide‐mediated assembly strategy resolves the fundamental conflict between physiological breathability and electromechanical robustness in wearable electronics. By integrating a polyamic acid‐encapsulated liquid metal ink onto an ultralight polyimide aerogel, imidization‐induced contraction enables low‐temperature conductive activation and ...
Haijun Zhu, Jiancheng Dong, Hao Qiu, Je Hyeong Kim, Xingyu Liu, Shiyin Lin, Mengting Zheng, Chang Zhou, Yuduo Zhang, Jiayu Hou, Kangjia Geng, Yuchen Wang, Yidong Peng, Haoran Liu, Guanzheng Wu, Yunpeng Huang, Yongsheng Luo, Steve Park, Tianxi Liu   +18 more
wiley   +1 more source

EMPIRICAL TIME-FREQUENCY ESTIMATION BASED ON INSTANTANEOUS COMPONENTS

, 2023
International audienceEMPIRICAL TIME-FREQUENCY ESTIMATION BASED ON INSTANTANEOUS ...
Ahmed, Ammar
core  

Enhanced Photocatalytic H2O2 Production on Terpyridine‐Based Acrylonitrile‐Linked Covalent Organic Frameworks with Asymmetric Localized Electron Distribution

Advanced Materials, EarlyView.
Asymmetric localized electron distribution has been optimized in covalent organic frameworks to enhance *O2 adsorption and facilitate charge transfer, boosting photocatalytic two‐electron transfer oxygen reduction toward H2O2 production from water and air.
Qinglan Zhao, Mengmeng Ce, Hengtao Lei, Tianyun Jin, Zhipeng Xie, Yushen Liu, Shengyi Yang, Xinwen Ou, Mohammad Farhadpour, Song‐Zhu Kure‐Chu, Xuan‐He Liu, Liang Zhang, Jimmy C. Yu   +12 more
wiley   +1 more source

Instantaneous frequency analysis of reverberant audio

, 2019
Thesis (Ph. D.)--University of Rochester. Department of Electrical and Computer Engineering, 2019.This thesis investigates the interaction of modulated audio signals, including those found in speech and music, with acoustic spaces.
Bocko, Mark Frederick (1956 - ), Smith , Sarah Rose   +1 more
core  

Influence of Carbon Nanoparticles on Electrically Induced Wear of Grease‐Lubricated Steels

Advanced Materials Interfaces, EarlyView.
When an electric current enters a pair of rubbing surfaces, enormous damage takes place. In this research, how such damage occurs in the presence of protective grease and the mitigation with added carbon nanoparticles, were investigated. It was discovered that those particles regulate transport and interfacial electrical stability of the grease ...
Mohammad Humaun Kabir, Darrius Dias, Jacob Bons, MD Wasek Foysal, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Instantaneous rotation speed measurement and error analysis for variable speed hydraulic system

Journal of Measurement Science and Instrumentation, 2015
In order to monitor the working state of piston motor and measure its instantaneous rotation speed accurately,the measuring principle and method of instantaneous rotation speed based on industrial personal computer and data acquisition card are ...
YANG Bin, GU Li-chen, LIU Yong, WANG Ping   +3 more
doaj  

Biodegradable Chitosan Films as Green Resists for Gold Nanowires Fabrication Through AFM‐Based Nanolithography

Advanced Materials Interfaces, EarlyView.
Schematic illustration of a sustainable nanofabrication process: chitosan derived from natural sources is used as a biodegradable thin film resist, patterned via Constant Pulse‐Assisted Force Lithography (CP‐AFL) to create tunable nanogrooves. These grooves template gold nanowire formation, enabling high‐resolution nanopatterning under ambient ...
Paolo Pellegrino, Lorenzo Vincenti, Isabella Farella, Valeria De Matteis, Mariafrancesca Cascione, Annalisa Bianco, Fabio Quaranta, Rosaria Rinaldi   +7 more
wiley   +1 more source

Instantaneous-power measurement in time-frequency domain

, 1995
The paper deals with an original application of the Short-Time Fourier Transform (STFT) to instantaneous power measurements. This technique can be easily implemented in a dedicated instrument to perform accurate time-frequency analysis of the time ...
ANDRIA, Gregorio, SAVINO, Mario, ATTIVISSIMO, Filippo   +2 more
core