نتایج جستجو برای: waveform

تعداد نتایج: 15679  

2007
Ramin Rezaiifar Hamid Jafarkhani

A novel waveform approximation called Orthogonal Matching Pursuit 1] (OMP) has been exploited to represent a speech waveform with a set of complex coeecients. The OMP algorithm proved to be quite eeective in approximating waveforms that have their energy concentrated in a short ranges of frequency. The spectrum of speech signals is usually well-localized in frequency and therefore OMP is a suit...

Journal: :The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2012

Journal: :Chest 2001
W Tang M H Weil S Sun H P Povoas K Klouche T Kamohara J Bisera

STUDY OBJECTIVE To compare the effects of biphasic defibrillation waveforms and conventional monophasic defibrillation waveforms on the success of initial defibrillation, postresuscitation myocardial function, and duration of survival after prolonged duration of untreated ventricular fibrillation (VF), including the effects of epinephrine. DESIGN Prospective, randomized, animal study. SETTI...

Journal: :J. Applied Mathematics 2013
Fengming Xin Jinkuan Wang Qiang Zhao Yuhuan Wang

This paper proposes a new optimal waveform selection algorithm for intelligent target tracking. In radar systems, optimal waveform is inspired by the improvements in performance. When the target is intelligent and tries to escape from detection, it will maximize the estimation error to degrade the target tracking performance. So the conventional tracking algorithms are not suitable for this sit...

Journal: :Respiratory Research 2005
Donald H Arnold David M Spiro Renee' A Desmond James S Hagood

BACKGROUND Validated measures to assess the severity of airway obstruction in patients with obstructive airway disease are limited. Changes in the pulse oximeter plethysmograph waveform represent fluctuations in arterial flow. Analysis of these fluctuations might be useful clinically if they represent physiologic perturbations resulting from airway obstruction. We tested the hypothesis that the...

Journal: :Journal of oral science 1999
S Kawashima Y Takahashi N Niikuni K Kanazawa I Nakajima M Akasaka Y Arai K Hashimoto K Shinoda

There were two purposes of this study. The first purpose was to introduce the "X-ray TV M-mode waveform" which is reconstructed from sequential X-ray TV images and the "reconstructed ultrasound M-mode waveform" which is delivered from ultrasound B-mode images. The second purpose was to evaluate the usefulness of these two types of waveforms in the investigation of tongue movement during swallow...

Journal: :Zhonghua yi xue za zhi = Chinese medical journal; Free China ed 2001
C H Huang S T Lai Z C Weng

BACKGROUND The pressure waveform of coronary sinus in human hearts has never been well described. Retrograde cardioplegia perfusion has become a popular method of myocardial protection in recent years, and identification of the pressure waveform of the coronary sinus might help intubate the coronary sinus in retrograde cardioplegia perfusion by differentiating it from that of the right atrium. ...

1988
Krishnan Ravichandran

Asymptotic Waveform Estimator (AWE) is a waveform estimator for general RC networks which can be used to estimate signal propagation delays through VLSI interconnects. The interconnects are modeled as resistors and capacitors connected such that each node has a capacitance to ground. State variable approach is used to obtain the steady-state asymptotes and the Forward Euler approximation for th...

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