نتایج جستجو برای: روش ica

تعداد نتایج: 378202  

Journal: :Neurocomputing 2009
Quanxue Gao Lei Zhang David Zhang

This paper presents a novel subspace method called sequential row–column independent component analysis (RC-ICA) for face recognition. Unlike the traditional ICA, in which the face image is transformed into a vector before calculating the independent components (ICs), RC-ICA consists of two sequential stages—an image row-ICA followed by a column-ICA. There is no image-to-vector transformation i...

2015
Heleen M. Oudemans-van Straaten Marlies Ostermann

Citrate has been recommended as the first-line anticoagulant for continuous renal replacement therapy (CRRT) in critically ill patients. Compared with heparin, citrate anticoagulation is safer and more efficacious. Citrate inhibits the coagulation cascade by lowering the ionized calcium (iCa) concentration in the filter. Monitoring of systemic iCa concentrations is inherent to the protocol, and...

Journal: :The Permanente journal 2015
Darrell B Newman Konstantinos C Siontis Krishnaswamy Chandrasekaran Allan S Jaffe Deanne T Kashiwagi

CONTEXT The importance of an abnormal ionized calcium (iCa) measurement in noncritically ill patients is unclear. Furthermore, iCa monitoring is more expensive than measurement of total calcium and consumes more laboratory resources. We hypothesize that most iCa tests are ordered for routine monitoring in asymptomatic patients, and results do not influence clinical management. OBJECTIVE To ch...

Journal: :Epilepsy Research 2013
David M. Treiman

R a c b e C t s w ‘ o ( P The lead article in this issue by Bialer and colleagues is a summary of the Eleventh Eilat Conference on New Antiepileptic Drugs and once again provides a comprehensive progress report on new antiepileptic drugs. This is the 10th such progress report from the Eilat conferences to appear in the pages of Epilepsy Research since 1995. The summary in this issue focuses onl...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Jeremiah D Osteen Kevin Sampson Vivek Iyer David Julius Frank Bosmans

The Nav1.1 voltage-gated sodium channel is a critical contributor to excitability in the brain, where pathological loss of function leads to such disorders as epilepsy, Alzheimer's disease, and autism. This voltage-gated sodium (Nav) channel subtype also plays an important role in mechanical pain signaling by primary afferent somatosensory neurons. Therefore, pharmacologic modulation of Nav1.1 ...

Journal: :Circulation 1999
T Nakajima K Iwasawa H Oonuma H Imuta H Hazama M Asano T Morita F Nakamura J Suzuki S Suzuki Y Kawakami M Omata Y Okuda

BACKGROUND It has been suggested that intracellular Ca2+ overload in cardiac myocytes leads to the development of diabetic cardiomyopathy. Troglitazone, an insulin-sensitizing agent, is a promising therapeutic agent for diabetes and has been shown to prevent diabetes-induced myocardial changes. To elucidate the underlying mechanism of troglitazone action on cardiac myocytes, the effects of trog...

Journal: :Respiration; international review of thoracic diseases 2012
Matthew Salamonsen Samantha Ellis Eldho Paul Karin Steinke David Fielding

BACKGROUND Ultrasound (US) guidance is advocated to reduce complications from thoracocentesis or intercostal catheter (ICC) insertion. Although imaging of the intercostal artery (ICA) with Doppler US has been reported, current thoracic guidelines do not advocate this, and bleeding from a lacerated ICA continues to be a rare but serious complication of thoracocentesis or ICC insertion. OBJECTI...

2016
Gamal Mabrouk Abdel-Hamid Reham S. Saad

A new proposal of blind channel estimation method for long term evoluation (LTE) based on combining advantages of denoising property of wavelet transform (WT) with blind estimation capability of independent component analysis (ICA) called wavelet denoising of ICA (WD-ICA) was presented. This new method increased the spectral efficiency compared to training based methods, and provided considerab...

2016
Kenneth Ball Nima Bigdely Shamlo Tim R. Mullen Kay Robbins

Independent component analysis (ICA) is a class of algorithms widely applied to separate sources in EEG data. Most ICA approaches use optimization criteria derived from temporal statistical independence and are invariant with respect to the actual ordering of individual observations. We propose a method of mapping real signals into a complex vector space that takes into account the temporal ord...

Journal: :Stroke 2007
Alexander C Flint Gary R Duckwiler Ronald F Budzik David S Liebeskind Wade S Smith

BACKGROUND AND PURPOSE Acute stroke from occlusion of the intracranial internal carotid artery (ICA) generally has a poor prognosis and appears to respond poorly to intravenous thrombolysis. Mechanical thrombectomy is a newly available modality for acute stroke therapy, but it is unknown whether this endovascular therapy may have a role in the specific setting of intracranial ICA occlusion. We ...

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