Publications related to Least-squares spectral analysis

Full Spectral Analysis of the Atrial Components in the ECG during Atrial Fibrillation

Clinical standard 12-lead ECG recordings over 5 minutes on patients in atrial fibrillation or in atrial flutter were analyzed. After suppression of the signal components related to ventricular activity, the amplitude spectra of all leads were inspected. Th ...

IEEE2008

Evaluation of characterization methods of Printer MTF

Albrecht Johannes Lindner

We explore two recent methods for measuring the Modeling Transfer Function of a printing system. We investigate the dependency on the amplitude when using the sinusoidal patches of the method proposed in and show that for too small amplitudes the measureme ...

2008

Generalized linear prediction method in phase-shifting interferometry in the presence of noise

Pramod Rastogi, Abhijit Patil, Rajesh Langoju

The effectiveness of phase-shifting interferometry (PSI) techniques employing piezoelectric device PZT in the estimation of phase depends largely on the accuracy with which the phase shifts are imparted to the device and the noise influencing the measureme ...

Elsevier2007

Spectral Properties and Stability of Self-Similar Wave Maps

Roland Donninger

In this thesis the Cauchy problem and in particular the question of singularity formation for co--rotational wave maps from 3+1 Minkowski space to the three--sphere

S^3

is studied. Numerics indicate that self--similar solutions of this model play a cruci ...

University of Vienna2007

Spectral Methods

Alfio Quarteroni

Spectral methods, particularly in their multidomain version, have become firmly established as a mainstream tool for scientific and engineering computation. While retaining the tight integration between the theoretical and practical aspects of spectral met ...

Springer2007

Epidural spinal cord stimulation plus quipazine administration enable stepping in complete spinal adult rats

Grégoire Courtine

We hypothesized that epidural spinal cord stimulation (ES) and quipazine (a serotonergic agonist) modulates the excitability of flexor and extensor related intraspinal neural networks in qualitatively unique, but complementary, ways to facilitate locomotio ...

American Physiological Society2007

Nonlinear dynamics of cardiovascular aging

The application of methods drawn from nonlinear and stochastic dynamics to the analysis of cardiovascular time series are applied with particular interests in the identification of changes associated with aging. Scale invariant and scale dependent approach ...

Lancaster University2007

Analysis of UWB antennas for carrier-based UWB impulse radio

Anja Skrivervik, Gabriela Quintero Diaz De Leon

A Carrier-based UWB pulse is compared with the commonly used Gaussian pulse. Two antenna systems are simulated and measured in frequency domain. The impulse response and the Power Spectral Density (PSD) of both studied pulses are obtained. The effect of ea ...

2007

Modulation of proton-induced current fluctuations in the human nicotinic acetylcholine receptor channel

Horst Vogel, Rudolf Hovius, Christophe Danelon, Jörg Grandl

The nicotinic acetylcholine receptor (nAChR) is a ligand-gated ion channel that switches upon activation from a closed state to a full conducting state. We found that the mutation delta S268K, located at 12' position of the second transmembrane domain of t ...

2007

Development of electrostatic turbulence from drift-interchange instabilities in a toroidal plasma

Ambrogio Fasoli, Mario Ludovico Podesta, Francesca Maria Poli

Electrostatic instabilities develop on TORPEX (TORoidal Plasma EXperiment) [A. Fasoli et al., Phys. of Plasmas, 13, 55902 (2006)] in the bad curvature region and propagate consistently with the drift wave dispersion relation. The wave number and frequency ...

2007

Least-squares spectral analysis

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Full Spectral Analysis of the Atrial Components in the ECG during Atrial Fibrillation

Evaluation of characterization methods of Printer MTF

Generalized linear prediction method in phase-shifting interferometry in the presence of noise

Spectral Properties and Stability of Self-Similar Wave Maps

Spectral Methods

Epidural spinal cord stimulation plus quipazine administration enable stepping in complete spinal adult rats

Nonlinear dynamics of cardiovascular aging

Analysis of UWB antennas for carrier-based UWB impulse radio

Modulation of proton-induced current fluctuations in the human nicotinic acetylcholine receptor channel

Development of electrostatic turbulence from drift-interchange instabilities in a toroidal plasma

Nonlinear dynamics of cardiovascular aging

Evaluation of characterization methods of Printer MTF

Generalized linear prediction method in phase-shifting interferometry in the presence of noise

Spectral Properties and Stability of Self-Similar Wave Maps

Analysis of UWB antennas for carrier-based UWB impulse radio

Full Spectral Analysis of the Atrial Components in the ECG during Atrial Fibrillation

Spectral Methods

Modulation of proton-induced current fluctuations in the human nicotinic acetylcholine receptor channel

Development of electrostatic turbulence from drift-interchange instabilities in a toroidal plasma

Epidural spinal cord stimulation plus quipazine administration enable stepping in complete spinal adult rats