نتایج جستجو برای: double exponential transformation

تعداد نتایج: 518044  

Journal: :Journal of Magnetic Resonance 2021

We investigate the effectiveness of Inverse Laplace Transform (ILT) analysis method to extract distribution relaxation rates from nuclear magnetic resonance data with stretched exponential relaxation. Stretched-relaxation is a hallmark rates, and an analytical expression exists for this case spin-1/2 nucleus. compare theoretical those extracted via ILT several values stretching exponent at diff...

Journal: :The Yale Journal of Biology and Medicine 1974
Johannes Bircher Walter Hacki

A statistical comparison of different BSP tests was carried out in normal subjects and in patients with various degrees of chronic liver damage. Only the logarithm of the BSP retention correlated linearly with the physiologically more meaningful determination of the maximal excretory capacity of the liver (BSP Tm, Wheele's method). A double logarithmic transformation was required to correlate t...

Journal: :iranian journal of science and technology (sciences) 2013
f. a. abd el-salam

using the riemann-liouville fractional differintegral operator, the lie theory is reformulated. the fractional poisson bracket over the fractional phase space as 3n state vector is defined to be the fractional lie derivative. its properties are outlined and proved. a theorem for the canonicity of the transformation using the exponential operator is proved. the conservation of its generator is p...

Journal: :Appl. Soft Comput. 2016
Li-Feng Wu Sifeng Liu Yingjie Yang

To resolve the conflict between our desire for a good smoothing effect and desire to give additional weight to the recent change, a grey accumulating generation operator that can smooth the random interference of data is introduced into the double exponential smoothing method. The results of practical numerical examples have demonstrated that the proposed grey double exponential smoothing metho...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2003
Giselle Alvarez Bruno Sansó Reinaldo J. Michelena Juan Ramón Jimenez

| We consider the problem of characterizing the lithology of a reservoir using gamma ray logs as well as seismic traces around the well. We rst calculate the continuous wavelet transform of the the data and then use the fact that the energy of such transformation is proportional to a power of its scale. The technique consists in estimating the power transformation obtaining a set of values of t...

In this paper, a unified analytical approach is proposed to investigate vibrational behavior of functionally graded shells. Theoretical formulation is established based on Sanders’ thin shell theory. The modal forms are assumed to have the axial dependency in the form of Fourier series whose derivatives are legitimized using Stokes transformation. Material properties are assumed to be graded in...

2011
Kazuaki Shibata Yoshihiko Horio Kazuyuki Aihara

The quadratic assignment problem (QAP) is one of the NP-hard combinatorial optimization problems. An exponential chaotic tabu search using a 2-opt algorithm driven by chaotic neuro-dynamics has been proposed as one heuristic method for solving QAPs. In this paper we first propose a new local search, the double-assignment method, suitable for the exponential chaotic tabu search, which adopts fea...

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