Results 81 to 90 of about 54,708 (232)
Demodulation of Three-Phase AC Power Transients in the Presence of Harmonic Distortion
Energies, 2020 Load switches in power systems may cause oscillations in active and reactive power flow. Such oscillations can be damped by synthetic inertia provided by smart inverters providing power from DC sources such as photovoltaic or battery storage. However, AC
Benjamin T. Gwynn, Raymond de Callafon
doaj +1 more source
End to End Deep Neural Network Frequency Demodulation of Speech Signals
, 2017 Frequency modulation (FM) is a form of radio broadcasting which is widely used nowadays and has been for almost a century. We suggest a software-defined-radio (SDR) receiver for FM demodulation that adopts an end-to-end learning based approach and ...
DE Rumelhart +9 more
core +1 more source
Small, EarlyView.Spectrally tunable narrowband photoconductors have been achieved based on n = 1 2D perovskite (PEA)2PbBrxI4‐x. Achieved the highest D* of 1011 Jones at 20 V. This research revealed the two different stacking orders in pure compositions and studied phase segregation in mixed halides, which quenched device performance.
Ding Ding +22 more
wiley +1 more source
Vacuum-ultraviolet frequency-modulation spectroscopy
, 2017 Frequency-modulation (FM) spectroscopy has been extended to the vacuum-ultraviolet (VUV) range of the electromagnetic spectrum. Coherent VUV laser radiation is produced by resonance-enhanced sum-frequency mixing ($\nu_{\mathrm{VUV}}=2\nu_{\mathrm{UV ...
Berkowitz J. +6 more
core +1 more source
Scalable Room‐Temperature Terahertz Graphene Cameras
Small Methods, EarlyView.ABSTRACT Terahertz (THz) imaging has emerged as a powerful tool for non‐destructive, label‐free analysis across several scientific disciplines, ranging from materials science to biomedical research. By capturing the spatial‐dependent information in a broad range of frequencies, this technique enables the identification of chemical composition ...
Lili Shi +2 more
wiley +1 more source
Real-time quantitative Schlieren imaging by fast Fourier demodulation of a checkered backdrop
, 2018 A quantitative synthetic Schlieren imaging (SSI) method based on fast Fourier demodulation is presented. Instead of a random dot pattern (as usually employed in SSI), a 2D periodic pattern (such as a checkerboard) is used as a backdrop to the refractive ...
Wildeman, Sander
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Safety Science and Technology, EarlyView.A multinode wearable system tailored for firefighters is presented, featuring LoRa‐BLE heterogeneous communication and edge‐side deep learning. It integrates a lightweight 1D‐CNN for real‐time posture recognition and an adaptive Physiological Strain Index (aPSI) model, ensuring reliable status monitoring and safety warning in complex fireground ...
Chongyuan Ni +8 more
wiley +1 more source
Photonic Sensors, 2017 A new demodulation algorithm of the fiber-optic Fabry-Perot cavity length based on the phase generated carrier (PGC) is proposed in this paper, which can be applied in the high-temperature pressure sensor. This new algorithm based on arc tangent function
Qianyu Ren +4 more
doaj +1 more source
VIEW, EarlyView.In this work, we develop submicron‐resolution mapping of intracellular lipid elements (SMILE) as an extraction‐free vibrational spectroscopic imaging platform based on hyperspectral stimulated Raman scattering microscopy with a spectral analysis pipeline for pixel‐resolved lipid profiling.
Yihui Zhou +10 more
wiley +1 more source
EnergiesThis paper proposes a modification to existing saliency-based, sensorless control strategy for interior permanent magnet synchronous motors. The proposed approach leverages a two-interval, six-segment high-frequency voltage signal injection technique. It
Daniel Konvicny +2 more
doaj +1 more source