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Advanced Search Results For "DISCRETE Fourier transforms"

1 - 10 of 4,651 results for
 "DISCRETE Fourier transforms"
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An orthogonal equivalence theorem for third order tensors.

Publication Type: Academic Journal

Source(s): Journal of Industrial & Management Optimization. Nov2022, Vol. 18 Issue 6, p4191-4200. 10p.

Abstract: In 2011, Kilmer and Martin proposed tensor singular value decomposition (T-SVD) for third order tensors. Since then, T-SVD has applications in low rank tensor approximation, tensor recovery, multi-view clustering, multi-view feature extraction, tensor ...

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DFTMicroagg: a dual-level anonymization algorithm for smart grid data.

Publication Type: Academic Journal

Source(s): International Journal of Information Security. Dec2022, Vol. 21 Issue 6, p1299-1321. 23p.

Abstract: The introduction of advanced metering infrastructure (AMI) smart meters has given rise to fine-grained electricity usage data at different levels of time granularity. AMI collects high-frequency daily energy consumption data that enables utility compan...

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A Novel Approach Towards Degree and Walsh-Transform of Boolean Functions.

Publication Type: Academic Journal

Source(s): International Journal of Foundations of Computer Science. Aug2022, Vol. 33 Issue 5, p453-479. 27p.

Abstract: Boolean functions are fundamental bricks in the development of various applications in Cryptography and Coding theory by making benefit from the weights of related Boolean functions (Walsh spectrum). Towards this, the discrete Fourier transform (Walsh–...

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Speed Estimation of Six-Phase Induction Motors, Using the Rotor Slot Harmonics.

Publication Type: Academic Journal

Source(s): Sensors (14248220). Nov2022, Vol. 22 Issue 21, p8157. 16p.

Abstract: Multiphase machines have recently been promoted as a viable alternative to traditional three-phase machines. Most experts are looking for strategies to estimate the rotation speed of such complex systems, since speed data are required for high-performa...

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Double-image compression and encryption scheme based on chaotic system and real-preserving multi-order discrete fractional Fourier transform.

Publication Type: Academic Journal

Source(s): Journal of Modern Optics. Sep2022, Vol. 69 Issue 16, p917-930. 14p.

Abstract: In order to reduce the amount of data transmission and key consumption, a double-image compression and encryption scheme based on chaotic system and real-preserving multi-order discrete fractional Fourier transform (RPMODFrFT) is proposed in this paper...

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Memory-accelerated parallel method for multidimensional fast fourier implementation on GPU.

Publication Type: Academic Journal

Source(s): Journal of Supercomputing. Nov2022, Vol. 78 Issue 16, p18189-18208. 20p.

Abstract: Fast Fourier transform (FFT) is a well-known algorithm that calculates the discrete Fourier transform (DFT) of discrete data and is an essential tool in scientific and engineering computation. Due to the large amounts of data, parallelly executing FFT ...

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Generalized frequency estimator with rational combination of three spectrum lines.

Publication Type: Academic Journal

Source(s): IET Radar, Sonar & Navigation (Wiley-Blackwell). Jul2022, Vol. 16 Issue 7, p1107-1115. 9p.

Abstract: The popular Discrete Fourier Transform (DFT) is known to be a sub‐optimal frequency estimation technique for a finite transform length. In order to approach the Cramer‐Rao Lower Bound (CRLB), many refinement techniques have been considered, but little ...

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Azophenyl appended Schiff base probe for colorimetric detection of Cu2+ in semi‐aqueous medium and live cell imaging.

Publication Type: Academic Journal

Source(s): Applied Organometallic Chemistry. Oct2022, Vol. 36 Issue 10, p1-12. 12p.

Abstract: A phenylazo appended ortho‐vanillin Schiff base scaffold (HAZ) has been used for selective colorimetric sensing of Cu2+ in semi‐aqueous medium (methanol–water, 1:1, v/v) in the presence of 16 cations and 20 anions, and the limit of detection is 1.8 × 1...

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Amplitude interval-valued complex Pythagorean fuzzy sets with applications in signals processing.

Publication Type: Academic Journal

Source(s): Journal of Intelligent & Fuzzy Systems. 2022, Vol. 43 Issue 1, p907-925. 19p.

Abstract: In this paper, we introduce the notion of amplitude interval-valued complex Pythagorean fuzzy sets (AIVCPFSs). The motivation for this extension is the utility of interval-valued complex fuzzy sets in membership and non-membership degree which can expr...

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Discrete Quadratic-Phase Fourier Transform: Theory and Convolution Structures.

Publication Type: Academic Journal

Source(s): Entropy. Oct2022, Vol. 24 Issue 10, p1340-N.PAG. 14p.

Abstract: The discrete Fourier transform is considered as one of the most powerful tools in digital signal processing, which enable us to find the spectrum of finite-duration signals. In this article, we introduce the notion of discrete quadratic-phase Fourier t...

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