Results 101 to 110 of about 1,950,575 (284)
A Midpoint-Search Frequency Estimator Based on the Discrete Fourier Transform (MS-DFT)
ElectronicsThis paper proposes a frequency-estimation method based on an iterative midpoint search applied to the discrete Fourier transform (MS-DFT). The method is designed to reduce the sensitivity of classical interpolation-based estimators to fractional-bin offsets and noise variations.
Codrin Donciu +2 more
openaire +1 more source
, 2009 Publication in the conference proceedings of EUSIPCO, Glasgow, Scotland ...
Durak, Lütfiye, SERBES, Ahmet
openaire +3 more sources
Advanced Physics Research, EarlyView.This graphical abstract illustrates the unified framework of Data Field Theory (DFT), integrating hyperbolic geometry for hierarchical embedding, gauge theory for internal symmetries, renormalization group for multi‐scale dynamics, Lévy processes for heavy‐tailed fluctuations, noncommutative geometry for quantum‐inspired cognition, and higher ...
Mohammadreza Nehzati
wiley +1 more source
Matrix-Vector Based Fast Fourier Transformations on SDR Architectures [PDF]
Advances in Radio Science, 2008 Today Discrete Fourier Transforms (DFTs) are applied in various radio standards based on OFDM (Orthogonal Frequency Division Multiplex). It is important to gain a fast computational speed for the DFT, which is usually achieved by using specialized Fast ...
Y. He +3 more
doaj
Warped discrete fourier transform and it's application on image compression
, 2006 52 p.Digital Transforms in Digital Signal Processing play an important role in analysis and design of discrete-time signals and systems. The popular transforms in today's use are Discrete Fourier Transform (DFT), Discrete Cosine Transform (DCT), and ...
Hosahalli Siddaiah Manjunath.
core
Carbon Energy, EarlyView.We elucidate the fundamental influences of polymer polarity on Li+ ionic environments in solid polymer electrolytes by considering four critical components: Li+, FSI−, residual solvents, and polymer matrix. Beyond facilitating LiFSI dissociation and Li+ transport, our findings underscore previously overlooked roles of polymer polarity, thereby ...
Ji‐Oh Kim +7 more
wiley +1 more source
Photochemical and Thermal Activation of a Diarylbismuth Azide
Chemistry – A European Journal, EarlyView.We report the synthesis and characterization of a novel diarylbismuth azide and its divergent reactivity upon thermal or photochemical activation. These findings contribute expanding the reactivity landscape of heavy pnictogen compounds and sets the basis for further investigations. ABSTRACT Azides are widely employed in synthesis as convenient nitrene
Giacomo Pugliese +5 more
wiley +1 more source
An analysis of pulsed ultrasonic transmit-receive systems for medical diagnostics
Archives of Acoustics, 2016 This paper presents a method for the calculation of the shape and size of pulses radiated and received by ultrasonic transmitting-receiving systems used in medical diagnostics.
Anna MARKIEWICZ
doaj
Chemistry – A European Journal, EarlyView.The energy level diagrams for the ν(C═O) and the δ(N─H) vibrations, resulting of combining in‐phase and out‐of‐phase modes on the basis of their local symmetries, was built by applying the exciton coupling theory to a new class of chiral macrocycles, based on the 2,5‐diaminoterephthalate scaffold.
Samara Medina +4 more
wiley +1 more source
EcoEnergy, EarlyView.Schematic illustration comparing the charge transfer dynamics and catalytic reaction over the (left) pristine carbon nitride and (right) Bi‐doped carbon nitride photocatalysts. In the pristine system, random charge diffusion and rapid recombination limit catalytic efficiency. In contrast, the Bi‐doped system establishes a robust internal electric field
Joel Jie Foo +5 more
wiley +1 more source