Results 41 to 50 of about 255,632 (300)

A Novel Harmonic Detection Method for Microgrids Based on Variational Mode Decomposition and Improved Harris Hawks Optimization Algorithm

open access: yesIEEE Access
In the pursuit of enhancing harmonic detection precision within microgrids, this paper introduces a pioneering algorithm, VMD-DCHHO-HD, which amalgamates Variational Mode Decomposition (VMD) with an advanced Harris Hawk Optimization algorithm ...
Xinchen Wang   +5 more
doaj   +1 more source

Harmonic detection algorithm based on improved SVD and Prony

open access: yesDianzi Jishu Yingyong, 2019
An improved algorithm based on singular value decomposition(SVD) and Prony is proposed to solve the problem that the traditional Prony algorithm is not very accurate because it is sensitive to noise during harmonic and inter-harmonic detection.
Ying Jun, Zhu Yunpeng, He Chao
doaj   +1 more source

Extraction of an Overlapped Second Harmonic Chirp Component using the Fractional Fourier Transform

open access: yes, 2011
In ultrasound harmonic imaging with chirp coded excitation, the axial resolution can be improved by increasing the excitation signal bandwidth. However, increasing the bandwidth will cause overlapping between the received nonlinear second harmonic chirp ...
Arif, M   +4 more
core   +1 more source

In vitro models of cancer‐associated fibroblast heterogeneity uncover subtype‐specific effects of CRISPR perturbations

open access: yesMolecular Oncology, EarlyView.
Development of therapies targeting cancer‐associated fibroblasts (CAFs) necessitates preclinical model systems that faithfully represent CAF–tumor biology. We established an in vitro coculture system of patient‐derived pancreatic CAFs and tumor cell lines and demonstrated its recapitulation of primary CAF–tumor biology with single‐cell transcriptomics ...
Elysia Saputra   +10 more
wiley   +1 more source

A new ip-iq detection method without phase-locked loop

open access: yesGong-kuang zidonghua, 2014
For problems of large calculation amount, complex vector conversion, poor real-time performance and weak robustness of common harmonic detection methods based on instantaneous reactive power, a new ip-iq detection method without phase-locked loop was ...
YE Jiazhuo   +3 more
doaj   +1 more source

Benefits of Harmonicity for Hearing in Noise Are Limited to Detection and Pitch-Related Discrimination Tasks

open access: yesBiology, 2023
Harmonic complex tones are easier to detect in noise than inharmonic complex tones, providing a potential perceptual advantage in complex auditory environments.
Neha Rajappa   +2 more
doaj   +1 more source

Macroscopic detection of deformed QM by the harmonic oscillator

open access: yes, 2016
Based on the nonperturbative analysis, we show that the classical motion of harmonic oscillator derived from the deformed QM is manifestly in contradiction with observations. For this reason, we take an alternate way for estimating the effect and discuss
Maziashvili, Michael
core   +1 more source

Fast selective harmonic mitigation in multifunctional inverters using internal model controllers and synchronous reference frames [PDF]

open access: yes, 2017
This paper presents a fast selective harmonic current mitigation strategy for inverters with active power filter capabilities based in synchronous reference frames and twodegrees-of-freedom internal model controllers.
Anaya-Lara, Olimpo   +5 more
core   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

open access: yesMolecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff   +11 more
wiley   +1 more source

EhdNet: Efficient Harmonic Detection Network for All-Phase Processing with Channel Attention Mechanism

open access: yesEnergies
The core of harmonic detection is the recognition and extraction of each order harmonic in the signal. The current detection methods are seriously affected by the fence effect and spectrum aliasing, which brings great challenges to the detection of each ...
Yi Deng   +4 more
doaj   +1 more source

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