Think you know the basics? Think again. Studies show that most adults struggle with questions that seem surprisingly simple ...

Abstract: With increasing penetration of renewable energy generation and power electronic converters, waveform distortion and resonance related to high-frequency harmonics and interharmonics ...

Engineers and technicians who work with oscilloscopes are used to seeing waveforms that plot a voltage versus time. Almost all oscilloscopes these days include the Fast Fourier Transform (FFT) to view ...

Creative Commons (CC): This is a Creative Commons license. Attribution (BY): Credit must be given to the creator. You are free to share(copy and redistribute) this ...

Abstract: This article proposes and experimentally validates a variable-resolution amplitude–frequency response measurement method utilizing multimode radio frequency (RF) chaotic signals. Based on ...

Background: Wet age-related macular degeneration (wAMD) is a vision-threatening eye disease worldwide. The amplitude of low-frequency fluctuation (ALFF) method was used to observe changes in ...

Blast-induced ground vibration (BIGV) velocities and frequencies are of major concern due to their adverse effects and damage to structures. Therefore, it becomes essential to assess the velocities ...

Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China Background: Cognitive impairment (CI) is a distinctive characteristic of ...

A general-purpose vector signal analyzer offers a low-cost, flexible option for measuring the frequency settling time of PLLs. By Douglas Olney, Keithley Instruments Inc. The frequency-settling time ...