Results 61 to 70 of about 200,390 (295)

Debye Sources and the Numerical Solution of the Time Harmonic Maxwell Equations, II [PDF]

, 2011
In this paper, we develop a new integral representation for the solution of the time harmonic Maxwell equations in media with piecewise constant dielectric permittivity and magnetic permeability in R^3.
Epstein, Charles L., Greengard, Leslie, O'Neil, Michael   +2 more
core  

XUV Frequency Combs via Femtosecond Enhancement Cavities

, 2012
We review the current state of tabletop extreme ultraviolet (XUV) sources based on high harmonic generation (HHG) in femtosecond enhancement cavities (fsEC).
Arissian L, Arthur K Mills, Chotas H, David J Jones, Gaarde M B, Gherman T, Gohle C, Hammond T J, Hehlen M P, Heyl C M, Jones R J, Lam M H, Matthew H C Lam, T J Hammond, Ullrich J, Yost D   +15 more
core   +1 more source

Joint Multi-Pitch Detection Using Harmonic Envelope Estimation for Polyphonic Music Transcription [PDF]

, 2011
In this paper, a method for automatic transcription of music signals based on joint multiple-F0 estimation is proposed. As a time-frequency representation, the constant-Q resonator time-frequency image is employed, while a novel noise suppression ...
Emmanouil Benetos, Simon Dixon, Student Member   +2 more
core   +3 more sources

Evaluation of Harmonic Distortion from Multiple Renewable Sources at a Distribution Substation

2017 IEEE International Workshop on Applied Measurements for Power Systems (AMPS), 2017
Harmonic emission assessment in a distribution network with existing background voltage harmonics is a challenge for Renewable Power Producers (RPP) aiming to achieve grid code compliance. Dynamic interaction of harmonic sources at a Point of Common Coupling (PCC) renders the general summation law in IEC 61000-3-6 impractical, as harmonic phasors do ...
Brandon Peterson, Johan Rens, Gerhard Botha, Jan Meyer, Jan Desmet   +4 more
openaire   +3 more sources

Unraveling the Molecular Mechanisms of Glioma Recurrence: A Study Integrating Single‐Cell and Spatial Transcriptomics

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu, Yinjiao Fei, Jiaxuan Ding, Kexin Shi, Jinyan Luo, Yuchen Zhu, Xingjian Sun, Gefei Jiang, Yuandong Cao, Weilin Xu, Shu Zhou   +10 more
wiley   +1 more source

Bayesian Inference for Acoustic Direction of Arrival Analysis Using Spherical Harmonics

Entropy, 2019
This work applies two levels of inference within a Bayesian framework to accomplish estimation of the directions of arrivals (DoAs) of sound sources. The sensing modality is a spherical microphone array based on spherical harmonics beamforming.
Ning Xiang, Christopher Landschoot
doaj   +1 more source

Impact of Asymptomatic Intracranial Hemorrhage on Outcome After Endovascular Stroke Treatment

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Endovascular treatment (EVT) achieves high rates of recanalization in acute large‐vessel occlusion (LVO) stroke, but functional recovery remains heterogeneous. While symptomatic intracranial hemorrhage (sICH) has been well studied, the prognostic impact of asymptomatic intracranial hemorrhage (aICH) after EVT is less certain ...
Shihai Yang, Chengsong Yue, Zhuang Li, Xiaolei Shi, Haoxuan Zhu, Jie Yang, Linyu Li, Jiaxing Song, Shitao Fan, Gaoming Li, Wenzhe Sun, Zhixian Ye, Jiacheng Huang, Dahong Yang, Jinfu Ma, Xu Xu, Zhixi Wang, Lilan Wang, Guojian Liu, Fengli Li, Changwei Guo, Li Qi, Wenjie Zi   +22 more
wiley   +1 more source

Stability Analysis and Stability Enhancement Based on Virtual Harmonic Resistance for Meshed DC Distributed Power Systems with Constant Power Loads

Energies, 2017
This paper addresses the stability issue of the meshed DC distributed power systems (DPS) with constant power loads (CPLs) and proposes a stability enhancement method based on virtual harmonic resistance.
Huiyong Hu, Xiaoming Wang, Yonggang Peng, Yanghong Xia, Miao Yu, Wei Wei   +5 more
doaj   +1 more source

Multiple-F0 estimation of piano sounds exploiting spectral structure and temporal evolution [PDF]

, 2010
This paper proposes a system for multiple fundamental frequency estimation of piano sounds using pitch candidate selection rules which employ spectral structure and temporal evolution.
Benetos, E., Dixon, S.
core   +1 more source

Continuous-wave Cascaded-Harmonic Generation and Multi-Photon Raman Lasing in Lithium Niobate Whispering-Gallery Resonators [PDF]

, 2011
We report experimental demonstration of continuous-wave cascaded-harmonic generation and Raman lasing in a millimeter-scale lithium niobate whispering-gallery resonator pumped at a telecommunication-compatible infrared wavelength.
Jeremy Moore, Matthew Tomes, Mona Jarrahi, Schaufele R. F., Tal Carmon   +4 more
core   +1 more source