Results 31 to 40 of about 2,215,680 (291)
Modified Fourier expansions: theory, construction and applications [PDF]
, 2010 Modified Fourier expansions present an alternative to more standard algorithms for the approximation of nonperiodic functions in bounded domains. This thesis addresses the theory of such expansions, their effective construction and computation, and ...
core +2 more sources
INFLUENCE OF CHRONOTHERAPY WITH DIFFERENT ANTIHYPERTENSIVE DRUGS ON CIRCADIAN BLOOD PRESSURE PATTERN
Рациональная фармакотерапия в кардиологии, 2016 Aim. To determine the value of different blood pressure (BP) measurement methods for arterial hypertension (HT) chronotherapy efficacy assessment. Material and methods.
V. M. Gorbunov +5 more
doaj +1 more source
Analyses and Modeling Impulse Noise Generated by Household Appliances
Advances in Electrical and Electronic Engineering, 2014 This paper describes analysis of impulse noise generated by small household appliances. Furthermore we propose a new model of impulse noise based on the averaged power spectrum and the random phase generation with various phase distributions.
Jaroslav Krejci, Tomas Zeman
doaj +1 more source
Some Essential Relations for the Quaternion Quadratic-Phase Fourier Transform
Mathematics, 2023 Motivated by the fact that the quaternion Fourier transform is a powerful tool in quaternion signal analysis, here, we study the quaternion quadratic-phase Fourier transform, which is a generalized version of the quaternion Fourier transform.
Mawardi Bahri +1 more
doaj +1 more source
Fingerprint Enhancement Algorithm Based on Surface Transformation Under Fourier Frequency Domain [PDF]
Jisuanji gongcheng, 2018 The previous works enhance fingerprint images in Fourier domain based on block.But there are some shortcomings in these works,they are not robust enough to non-smooth areas,and the size of the window is not easy to determine.A curved- regions-based ...
MEI Yuan,ZHANG Xiamiao
doaj +1 more source
A hyperkähler Fourier transform
Differential Geometry and its Applications, 1998 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
BARTOCCI, CLAUDIO +2 more
openaire +3 more sources
Fourier restriction to polynomial curves I: a geometric inequality [PDF]
, 2010 We prove a Fourier restriction result for general polynomial curves in Rd. Measuring the Fourier restriction with respect to the affine arclength measure of the curve, we obtain a universal estimate for the class of all polynomial curves of bounded ...
Wright, James +5 more
core +1 more source
Journal of Harbin University of Science and TechnologyWith the rapid development of data centers, the issue of server power consumption is gradually highlighted. The accuracy of prediction is of great significance for improving the efficiency of server operation and energy conservation and emission ...
YANG Xibin, WANG Wei, WANG Xu, DING Bo
doaj +1 more source
On Katugampola Fourier Transform [PDF]
Journal of Mathematics, 2019 The aim of this article is to introduce a new definition for the Fourier transform. This new definition will be considered as one of the generalizations of the usual (classical) Fourier transform. We employ the new Katugampola derivative to obtain some properties of the Katugampola Fourier transform and find the relation between the Katugampola Fourier
Tariq O. Salim +2 more
openaire +3 more sources
Experimental Modal Test of the Laboratory Model of Steel Truss Structure
Civil and Environmental Engineering, 2016 The experimental modal analysis is often used to validate the accuracy of dynamic numerical models. It is also a good tool to obtain valuable information about current condition of the structures that could help to determine residual lifetime.
Kortiš Ján +3 more
doaj +1 more source