Abstract: Calculating the group delay (GD) and reassigning amplitude coefficients for transient signals are crucial in time-frequency analysis (TFA) theory. The definition-based GD calculation brings ...
Abstract: State of charge (SOC) estimation based on frequency-domain electrochemical impedance spectroscopy (EIS) can offer relatively fast estimation, but faces challenges in estimation accuracy. In ...
During cardiac arrhythmia, the heart frequency is an important physiological parameter that can be identified by analyzing electrocardiogram (ECG) signals. However, the accuracy of the frequency ...
On January 1, 2026, America's favorite teen detective officially escaped copyright protection. The first four Nancy Drew mysteries from 1930—The Secret of the Old Clock, The Hidden Staircase, The ...
Betty Boop is one of the most iconic cartoons of the 20th century. A pinup drawn to look like a 1920s flapper, the character debuted nearly a century ago and quickly became a household name: In 1932, ...
AI-driven process monitoring enhances the qualification of additively manufactured stainless-steel parts. By analysing high-frequency welding current and voltage signals in both the time and frequency ...
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