نتایج جستجو برای: rejection efficiency

تعداد نتایج: 421322  

Journal: :Statistics and Computing 1996
Jun S. Liu

Although Markov chain Monte Carlo methods have been widely used in many disciplines, exact eigen analysis for such generated chains has been rare. In this paper, a special MetropolisHastings algorithm, Metropolized independent sampling, proposed first in Hastings (1970), is studied in full detail. The eigenvalues and eigenvectors of the corresponding Markov chain, as well as a sharp bound for t...

Journal: :molecular and biochemical diagnosis (journal) 0
razieh abdolvahabi department of pathobiology, school of public health, tehran university of medical sciences, tehran, iran abdolfatah sarrafnejad department of pathobiology, school of public health, tehran university of medical sciences, tehran, iran mohsen nafar chronic kidney disease research center, department of nephrology, shahid labbafinejad medical center, shahid beheshti university of medical sciences, tehran, iran aliakbar amirzargar department of immunology, school of medicine, tehran university of medical sciences, tehran, iran and molecular immunology research center, tehran university of medical sciences, tehran, iran

background: the innate immunity plays an important role in the host response to transplantation by toll-like receptors and results in development of acute allograft rejection. the aim of this study was to evaluate the association of tlr2 and cd14 (co-receptor) gene polymorphisms with acute rejection in kidney transplant recipients.   methods : the study was conducted in a population of 239 subj...

Journal: :Optics letters 2004
Nan-Kuang Chen Sien Chi Shiao-Min Tseng

It is known that dispersive fiber has an LP01 mode cutoff wavelength that acts as a wavelength filter. With a dispersive polysiloxane polymer overlay on a side-polished single-mode fiber, an in-line tunable fiber short-pass filter with a tuning range of approximately 400 nm (1250-1650 nm) and a temperature variation of 15 degrees C was demonstrated. The rejection efficiency was greater than 50 ...

2005
S Li

Features * Three Outputs. (1) fast output for timing; (2) linear output for pulse height analysis; (3) Neutron gate for counting neutrons or for use in coincidence with the fast or linear output. a Detects neutrons with energies from 0.5 MEV to 40 MEV. * High detection efficiency for fast neutrons with 2000:1 rejection ratio for gamma rays. * Useful with NE 311A Boron loaded liquid scintillator...

Journal: :Computer Physics Communications 2005
Gleb Beliakov

This paper describes generation of nonuniform random variates from Lipschitzcontinuous densities using acceptance/ rejection, and the class library ranlip which implements this method. It is assumed that the required distribution has Lipschitzcontinuous density, which is either given analytically or as a black box. The algorithm builds a piecewise constant upper approximation to the density (th...

1999
Denis Jouvet Jean Monné

This paper deals with the recognition of spelled names over the telephone. It introduces an efficient way of handling the spelling grammar, that is the lexicon of the allowed spelled names. The proposed approach is based on a forward-backward algorithm. The constraints on the sequences of letters are derived from the lexicon and are used by the A* algorithm in the backward pass. This forward-ba...

2013
Anna Katrine Vangsgaard Miguel Mauricio-Iglesias Krist V. Gernaey Gürkan Sin

The nitrogen removing granular sludge process is a novel and intensified process. However, its stable operation and control remains a challenging problem. In this contribution, a new process oriented approach is used to develop, evaluate and benchmark control strategies to ensure stable operation and rejection of disturbances. Three control strategies were developed: a feedforward control (case...

1999
Denis Jouvet Katarina Bartkova Guy Mercier

An efficient rejection procedure is necessary to reject out-ofvocabulary words and noise tokens that occur in voice activated vocal services. Garbage or filler models are very useful for such a task. However, a post-processing of the recognized hypothesis, based on a likelihood ratio statistic test, can refine the decision and improve performance. These tests can be applied either on acoustic p...

2018
Lin Li Jun Liu Xinkai Zuo Haihong Zhu

This paper presents an improved version of the metric-based iterative closest point algorithm to estimate robot poses by matching 2D laser scans with different overlapping percentages. Because of the greatly varied density distribution of realistic point clouds, a resampling method is used to accelerate the iteration process and protect the calculation of the rejection threshold from being dist...

Journal: :The Journal of chemical physics 2015
Vo Hong Thanh Corrado Priami

We address the problem of simulating biochemical reaction networks with time-dependent rates and propose a new algorithm based on our rejection-based stochastic simulation algorithm (RSSA) [Thanh et al., J. Chem. Phys. 141(13), 134116 (2014)]. The computation for selecting next reaction firings by our time-dependent RSSA (tRSSA) is computationally efficient. Furthermore, the generated trajector...

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