نتایج جستجو برای: estimates

تعداد نتایج: 178799  

Some estimates are proved for the generalized Fourier-Bessel transform in the space (L^2) (alpha,n)-index certain classes of functions characterized by the generalized continuity modulus.

2017
Eman A. El-Dessouky

The maintenance service policy plays a main role to assist any manufacturing organization for safe and available its equipment's and maintenance cost effective. Therefore, we need to estimate the costs of maintenance service policy. The partially step -stress accelerated life test is assumed when the lifetime of test units follows an extension of exponential distribution. Based on Type II censo...

2013
Leslie M. Novak

SAR change detection performance using coherent change detection (CCD) and non-coherent change detection (NCCD) algorithms is demonstrated using high-resolution synthetic aperture radar (SAR) imagery gathered by the General Dynamics Data Collection System. CCD performance comparisons using phaseonly imagery versus complex (amplitude and phase) imagery are also presented. A new image quality met...

2006
Marina Takane

For this study, we have chosen a model with γ = 1, identified as BrennanSchwartz in CKLS. We also impose the restrictions α > 0 and β < 0 in order to ensure reversion to the mean [7]. Ideally, we would like to estimate the value of γ as well, but the choice of this model was for simplicity: The maximum likelihood estimates (MLEs) for α, β, and σ can be found explicitly if we assume normally dis...

Journal: :journal of mining and environment 2011
h. rezaee o. asghari j.k. yamamoto

a simple but novel and applicable approach is proposed to solve the problem of smoothing effect of ordinary kriging estimate which is widely used in mining and earth sciences. it is based on transformation equation in which z scores are derived from ordinary kriging estimates and then rescaled by the standard deviation of sample data and the sample mean is added to the result. it bears the grea...

Journal: :Computer methods and programs in biomedicine 2004
Grace Hui-Min Wu Amy Ming-Fang Yen Tony Hsiu-Hsi Chen

Writing a computer program for modeling multi-state disease process for cancer or chronic disease is often an arduous and time-consuming task. We have developed a SAS macro program for estimating the transition parameters in such models using SAS IML. The program is very flexible and enables the user to specify homogeneous and non-homogeneous (i.e. Weibull distribution, log-logistic, etc.) Mark...

Journal: :Neural computation 2009
Xuejuan Zhang Gongqiang You Tianping Chen Jianfeng Feng

An expression for the probability distribution of the interspike interval of a leaky integrate-and-fire (LIF) model neuron is rigorously derived, based on recent theoretical developments in the theory of stochastic processes. This enables us to find for the first time a way of developing maximum likelihood estimates (MLE) of the input information (e.g., afferent rate and variance) for an LIF ne...

2010
Allan Sly

Large graphs are sometimes studied through their degree sequences (power law or regular graphs). We study graphs that are uniformly chosen with a given degree sequence. Under mild conditions, it is shown that sequences of such graphs have graph limits in the sense of Lovász and Szegedy with identifiable limits. This allows simple determination of other features such as the number of triangles. ...

2013
Erik Hedstrom Einar Heiberg Gerald F Greil Eike Nagel

Background Quantification of myocardial and liver iron load has become a mainstay of guiding therapy in thalassaemia patients. However, current quantification methods are user dependent for data-point exclusion before curve fitting, and do not report the T2* certainty. Recently, an automatic inline maximum likelihood estimate (MLE) method with k-space Rician noise correction was validated again...

2008
Sadek Gala

In this paper, we give a necessary and sufficient condition for the existence of a nonnegative solution for the equation u = W r u 2 + f , where f ∈ L 2 loc R d. (1) with W r σ = f is the Wolff's potential. Equations of this type arise in applications of Schrödinger operators and harmonic analysis (see [CWW], [?], [KS]) to the problem of the existence of nonnegative solutions for the nonlinear ...

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