نتایج جستجو برای: moment matching

تعداد نتایج: 160752  

2012
K.Kiran Kumar

The paper presents the application of Least Squares moment matching method about a general point „a‟ for the reduction of high order Interval systems. A heuristic criteria have been employed for selecting the linear shift point „a‟ based upon the harmonic mean of real parts of the poles of four high order fixed systems obtained by Kharitonov‟s Theorem. The denominator polynomials are obtained b...

Journal: :European Transactions on Telecommunications 2005
Fredrik Berggren

To evaluate the distribution function of a sum of lognormal random variables. it is common to use approximation methods based on moment matching. These include the classical and simple Fenton-Wilkinson method, which approximates the sum with a single lognormal variable, having the first two moments matched. In this letter, we give a closed-form bound for the error of the distribution function, ...

Journal: :IEICE Transactions 2006
Chia-Chi Chu Ming-Hong Lai Wu-Shiung Feng

The global Lanczos algorithm for solving the RLCG interconnect circuits is presented in this paper. This algorithm is an extension of the standard Lanczos algorithm for multiple-inputs multiple-outputs (MIMO) systems. A new matrix Krylov subspace will be developed first. By employing the congruence transformation with the matrix Krylov subspace, the two-side oblique projection-based method can ...

In the present study, tried to examine the reactive solute relationships for transport and degradation processes through the rockfill media. By applying the analytical solution of reactive transport, the 1st to 3rd theoretical temporal moments have been extracted then, by using two methods of curve fitting and temporal moment matching, the coefficients of dispersion and degradation have been ex...

2008
A. G. Grozin

We compute the three-loop QCD corrections to the quark chromomagnetic moment and thus obtain the matching coefficient and the anomalous dimension of the chromomagnetic interaction in HQET. As a byproduct we obtain the three-loop corrections to the quark anomalous magnetic moment.

2008
Ju Cheng Yang Dong Sun Park

A fingerprint verification system based on a set of invariant moment features and a nonlinear Back Propagation Neural Network (BPNN) verifier is proposed. An image-based method with invariant moment features for fingerprint verification is used to overcome the demerits of traditional minutiae-based methods and other image-based methods. The proposed system contains two stages: an off-line stage...

Journal: :رادار 0
محمدامین قنادی محمد سعادت سرشت اکرم افتخاری

nowadays, sar imaging systems have become more interesting for scientists. high spatial resolution of recent sar images has become a key factor for their accurate applications such as interferometry, radargrammetry and change detection. in these applications, sar image matching procedure is a critical step for conjugate point extraction which is much more difficult than the optical images. the ...

2016
Farheen Omar

Probabilistic Graphical Models are often used to efficiently encode uncertainty in real world problems as probability distributions. Bayesian learning allows us to compute a posterior distribution over the parameters of these distributions based on observed data. One of the main challenges in Bayesian learning is that the posterior distribution can become exponentially complex as new data becom...

2009
Pierre Degond Giacomo Dimarco Lorenzo Pareschi

In this work we propose a new approach for the numerical simulation of kinetic equations through Monte Carlo schemes. We introduce a new technique which permits to reduce the variance of particle methods through a matching with a set of suitable macroscopic moment equations. In order to guarantee that the moment equations provide the correct solutions, they are coupled to the kinetic equation t...

2005
C. H. Chan Yeung Sam Hung Cheung Hoi Leung

This paper proposes an algorithm for matching line segments between two images which are related by affine transformations using local affine moment invariant (AMI). Instead of using traditional methods for objection recognition in which each object is globally represented by a vector of affine moment invariants, here each pair of line segments extracted from each image is locally represented b...

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