نتایج جستجو برای: rejection efficiency
تعداد نتایج: 421322 فیلتر نتایج به سال:
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...
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...
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 ...
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...
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...
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...
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...
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...
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...
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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