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3 828 (0,12s)

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3D Image Reconstructions and the Nyquist–Shannon Theorem

In the present paper it is shown that the Nyquist frequency is not the only critical limit determining aliasing artefacts but there are some other frequencies that intensify aliasing phenomena and form an infinite set of points at which nume...

Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

  • 2015
  • Jimp
  • Link
Result

Fluctuation of Electrical Polarisation in Piezoceramic Sensors.

Fluctuation of electrical polarisation is a source of the current and voltage noise in piezoceramic sensors. In the vicinity of the Curie temperature critical fluctuations exist. Using Nyquist theorem the current noise spectral dens...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2002
  • D
Result

A New Reconstruction from the F-Transform Components

A new notion of adjoint fuzzy partition is introduced and the reconstruction of a function from its F-transform components is analyzed. An analogy with the Nyquist-Shannon-Kotelnikov sampling theorem is discussed. Special attention ...

BA - Obecná matematika

  • 2016
  • Jx
Result

Elimination of Gibbs and Nyquist–Shannon Phenomena in 3D Image Reconstruction

A new method for an approximation of fracture surfaces by a partial sum of the Fourier series which does not contain any Gibbs effects, any artefacts caused by convergence in the mean and any alias....

Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

  • 2016
  • Jimp
  • Link
Result

Nyquist criterion for systems with distributed delays

results. Proofs of statements and theorem and demonstrative examples are omitted due...

BC - Teorie a systémy řízení

  • 2011
  • D
Result

Generalized Sampling Theorem for Bandpass Signals

Nyquist rate is the aim of the generalized sampling. Papoulis 1977 provided an elegant, a generalized sampling theorem (GST) for bandpass signals is presented. The second part deals with utilizing this theorem for signal r...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2006
  • Jx
Result

Nyquist Criterion at Sampling and Analysis Techniques,

Nyquist Criterion at Sampling and Analysis Techniques,...

BM - Fyzika pevných látek a magnetismus

  • 2005
  • D
Result

Nyquist Filters with Alternative Balance between Time- and Frequency-domain Parameters

the Nyquist condition for minimum intersymbol interference constitutes an important task of Nyquist filter definitions and design techniques to devise digital filter coefficients available for a designer. In this paper we propose a...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2010
  • Jx
Result

Correlation Analysis of the Faster-than-Nyquist Signal

The main goal of the paper is to present an analysis of the possibility of using faster-than-nyquist signal processing method to improve performance of navigation system. First the faster-than-nyquist concept is introduced and its p...

Electrical and electronic engineering

  • 2017
  • D
  • Link
Result

Nyquist relation and its validity for piezoelectric ceramics considering temperature

In this paper, we focused on validity of the Nyquist relation for piezoelectric ceramics in temperatures 303 K - 393 K. The electrical impedance and noise spectral density were measured and compared for every 10 K in frequency range 100 kHz ...

BM - Fyzika pevných látek a magnetismus

  • 2009
  • Jx
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