نتایج جستجو برای: stationary test

تعداد نتایج: 865883  

1999
Joel L. Horowitz John C. Nankervis

This paper considers a test of the null hypothesis that the first K autocorrelations of a covariance stationary time series are zero in the presence of statistical dependence. The test is based on the BoxPierce Q statistic with bootstrap-based critical values. The bootstrap is implemented using a double blocks of blocks procedure with prewhitening. The finite sample performance of the bootstrap...

Journal: :journal of membrane science and research 0
neil thomas stacey university of the witwatersrand diane hildebrandt university of south africa david glasser university of south africa mark peters university of south africa

comnode classification within membrane residue curves (m-rcms) currently hinges on lyapunov’s theorem and therefore the computation of mathematically complex eigenvalues. this paper presents an alternative criterion for the classification of nodes within m-rcms based on the total membrane flux at node compositions. this paper demonstrates that for a system exhibiting simple permeation behaviour...

comNode classification within Membrane Residue Curves (M-RCMs) currently hinges on Lyapunov’s Theorem and therefore the computation of mathematically complex eigenvalues. This paper presents an alternative criterion for the classification of nodes within M-RCMs based on the total membrane flux at node compositions. This paper demonstrates that for a system exhibiting simple permeation behaviour...

1999
Philip Rothman Dick van Dijk

The Enders and Granger (1998) unit-root test against stationary alternatives with asymmetric adjustment is applied to the extended Nelson and Plosser dataset. The test rejects the unit-root null roughly as frequently as does the ADF test. JEL Classification C32, E32 * Correspondence: Philip Rothman Department of Economics East Carolina University Greenville, NC 27858 Phone: 252-328-6151 Fax: 25...

Journal: :international journal of mathematical modelling and computations 0
m. khodabin

in this paper, the ambiguity of nite state irreducible markov chain trajectories is reminded and is obtained for two state markov chain. i give an applicable example of this concept in president election

Journal: :journal of current ophthalmology 0
مرتضی مواسات morteza movassat رامک روحی پور ramak roohipour مهدی نیلی احمدآبادی mehdi nili-ahmadabadi

purpose : to evaluate the incidence of leber’s congenital amaurosis (lca) in low vision children referred to electrophysiology ward of farabi eye hospital , and review the clinical features of disease and electroretiongraphy (erg) test values to confirm the diagnosis and severity of the disease in iran . design: prospective observational case series methods : two-hundred and fifteen cases of lo...

2008
Yuedong Wang Fred Hutchinson

Understanding the seizure initiation process and its propagation pattern(s) is a critical task in epilepsy research. Characteristics of the pre-seizure electroencephalograms (EEGs) such as oscillating powers and high-frequency activities are believed to be indicative of the seizure onset and spread patterns. In this article, we analyze epileptic EEG time series using nonparametric spectral esti...

Journal: :SIAM J. Scientific Computing 2015
Praveen Chandrashekar Christian Klingenberg

We present a well-balanced, second order, Godunov-type finite volume scheme for compressible Euler equations with gravity. By construction, the scheme admits a discrete stationary solution which is a second order accurate approximation to the exact stationary solution. Such a scheme is useful for problems involving complex equations of state and/or hydrostatic solutions which are not known in c...

A one kb portion of the rpoS gene from Flexibacter chinensis was isolated by PCR, sequenced and compared to the rpoS gene of a variety of other organisms. The gene was found to be 98% similar to previously sequenced genes. Mutation of the rpoS gene with tri-parental mating produced strain JR101 and the growth rate of the mutant was compared with that of the wild-type. The mutant grew slower, an...

1998
Clarence W. Rowley Tim Colonius

Many compressible ow and aeroacoustic computations rely on accurate nonre ecting or radiation boundary conditions. When the equations and boundary conditions are discretized using a nitedi erence scheme, the dispersive nature of the discretized equations can lead to spurious numerical reections not seen in the continuous boundary value problem. These re ections can lead to poor convergence to a...

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