نتایج جستجو برای: الگوریتم hht

تعداد نتایج: 23191  

2010
Pei-Wei Shan Ming Li Cristian Toma

Time-frequency distribution has received a growing utilization for analysis and interpretation of nonlinear and nonstationary processes in a variety of fields. Among them, two methods, such as, the empirical mode decomposition EMD with Hilbert transform HT which is termed as the Hilbert-Huang Transform HHT and the Hilbert spectrum based on maximal overlap discrete wavelet package transform MODW...

2010
Jaejoon Kim Xiaoyun Sun

For non-stationary signal in ultrasonic inspection, an effective denoising method based on Hilbert-Huang transform (HHT) is presented and a few key questions using the HHT method are discussed. The overall scheme of HHT includes two parts which are empirical mode decomposition (EMD) algorithm and a sum of intrinsic mode functions (IMF). Through the EMD process, individual IMF can be found. The ...

2012
Paola Pierucci Gennaro M Lenato Patrizia Suppressa Patrizia Lastella Vincenzo Triggiani Raffaella Valerio Mario Comelli Daniela Salvante Alessandro Stella Nicoletta Resta Giancarlo Logroscino Francesco Resta Carlo Sabbà

BACKGROUND The difficulty in establishing a timely correct diagnosis is a relevant matter of concern for several rare diseases. Many rare-disease-affected patients suffer from considerable diagnostic delay, mainly due to their poor knowledge among healthcare professionals, insufficient disease awareness among patients' families, and lack of promptly available diagnostic tools. Hereditary Haemor...

2010
Lei Wang Mang I Vai Peng Un Mak Chio In Ieong

Hilbert Huang Transform (HHT) is an empirical timefrequency analysis method firstly proposed by N. E. Huang in 1998. This method is suitable for nonlinear and non-stationary signal processing and thus employed for bioelectrical signal processing and analysis in recent years. However, the large computation cost of HHT restricts its applications for real-time signal processing. This paper present...

2013
Chit Wai Wong

Copyright: © 2013 Wong CW. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Abstract Hereditary hemorrhagic telangiectasia (HHT) is usually under recognized. It is a rare genetic disorder characterized by telan...

2017
Yuji Kawano Yuji Kanaoka Nobuhiko Hiraiwa Daisuke Nakatsuka Minoru Tabata

Celiac artery (CA) coverage during thoracic endovascular aortic repair has been demonstrated to be a feasible and effective strategy for selected cases. However, there is a potential risk of ischemic complications due to CA coverage in patients with certain types of hereditary hemorrhagic telangiectasia (HHT). Herein, we report a case of thoracoabdominal aortic rupture in a patient with HHT tha...

Journal: :Journal of Communication and Information Systems 2022

Empirical mode decomposition (EMD) is a signal processing method that produces data-driven time-frequency representation suited to characterize time-varying and nonlinear phenomena. In EMD, intrinsic functions (IMF) are sequentially estimated from the of interest represent different oscilation modes produce an orthogonal original information. Different algorithms have been proposed for EMD esti...

Journal: :Thrombosis and haemostasis 2012
Georg Breier

Editorial on Albiñana et al. Thromb Haemost 2012; 108: 41-53. Hereditary haemorrhagic telangiectasia (HHT) is a rare autosomal dominant vascular disorder, which occurs at a frequency of about one in 5,000 people (1–3). Vascular malformations in HHT patients range from regions of capillary dilation (telangiectases) in the nasal septum, oral mucosa, skin, or gastrointestinal tract, to large arter...

Journal: :Leukemia research 2013
L Wang L-S You W-M Ni Q-L Ma Y Tong L-P Mao J-J Qian J Jin

In this study, we confirmed that combining HHT with ACR can result in synergistic cytotoxicity to AML cells in vitro and in vivo. Combining HHT and ACR simultaneously inhibited PI3K/AKT and WNT/β-catenin signaling in AML cells. Significant increases in growth inhibition and apoptosis were induced by an AKT inhibitor when the WNT3A gene of THP-1 cells was silenced. HHT+ACR could synergistically ...

2017
Jonathan E. Zuckerman Anthony Sisk

Bevacizumab has become a frequently used therapeutic option for bleeding complications in hereditary hemorrhagic telangiectasia (HHT). Renal limited thrombotic microangiopathy is a welldocumented complication of Bevacizumab therapy. We present an unusual case of Bevacizumab induced thrombotic microangiopathy complicated by glomerular predominant renal hemosiderosis in a patient with HHT-associa...

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