Abstract: When using Doppler through-wall radar for target localization, it is necessary to extract the target's instantaneous frequency (IF) from the time–frequency distribution (TFD) of the echoes.

Abstract: Accurate modeling is an important aspect for a reliable design, control and optimization of proton exchange membrane (PEM) fuel cell. The mathematical model of PEM fuel cell involves a set ...

DENVER, Sept. 9, 2025 /PRNewswire/ -- EverPeak Insurance, a subsidiary of Pinnacol Assurance, announced the acquisition of Method Insurance, a managing general agent (MGA) serving employers of ...

Society is experiencing increased global demand for lithium, a critical resource for rechargeable batteries in electric vehicles, consumer electronics, and energy storage systems. Conventional lithium ...

1 Institute of Data Science and Engineering, Xuzhou University of Technology, Xuzhou, China 2 School of Mathematics and Statistics, Huaibei Normal University, Huaibei, China The ...