Browsing by Subject "Statistical methods"
Now showing items 21-40 of 54
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Article
Measurement of the ratios of branching fractions B(Bs0→Ds- π+π+π-)/B(B0→D-π+π+π-) and B(Bs0→Ds-π+)/ B(B0→D-π+)
(2007)Using 355pb-1 of data collected by the CDF II detector in pp̄ collisions at s=1.96TeV at the Fermilab Tevatron, we study the fully reconstructed hadronic decays B(s)0→D(s)-π+ and B(s)0→D(s)- π+π+π-. We present the first ...
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Article
Measurement of the ratios of branching fractions B(Bs0→Ds-π+)/ B(B0→D-π+) and B(B+→D̄0π+)/B(B0→D-π+)
(2006)We report an observation of the decay Bs0→Ds-π+ in pp̄ collisions at s=1.96TeV using 115pb-1 of data collected by the CDF II detector at the Fermilab Tevatron. We observe 83±11(stat) Bs0→Ds-π+ candidates, representing a ...
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Conference Object
Multi feature texture analysis for the classification of carotid plaques
(IEEE, 1999)The objective of this work was to develop a computer aided system which will facilitate the automated characterization of carotid plaques recorded from high resolution ultrasound images for the identification of individuals ...
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Article
Multifeature Texture Analysis for the Classification of Clouds in Satellite Imagery
(2003)The aim of this work was to develop a system based on multifeature texture analysis and modular neural networks that will facilitate the automated interpretation of satellite cloud images. Such a system will provide a ...
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Article
N-to-Δ electromagnetic-transition form factors from lattice QCD
(2005)The magnetic dipole (M1), the electric quadrupole (E2), and the Coulomb quadrupole (C2) amplitudes for γN → Δ are calculated in quenched lattice QCD. Using a new method, which combines an optimal choice of interpolating ...
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Conference Object
New technique for the classification and decomposition of EMG signals
(IEEE, 1995)The shapes and firing rates of motor unit action potentials (MUAPs) in an electromyographic (EMG) signal provide an important source of information for the diagnosis of neuromuscular disorders. In order to extract this ...
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Article
On the posterior median estimators of possibly sparse sequences
(2005)We adopt the Bayesian paradigm and discuss certain properties of posterior median estimators of possibly sparse sequences. The prior distribution considered is a mixture of an atom of probability at zero and a symmetric ...
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Conference Object
Prediction of rainfall rate based on weather radar measurements
(2004)Weather radars are used to measure the electromagnetic radiation backscattered by cloud raindrops. Clouds that backscatter more electromagnetic radiation consist of larger droplets of rain and therefore they produce more ...
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Article
Prefetching in content distribution networks via Web communities identification and outsourcing
(2008)Content distribution networks (CDNs) improve scalability and reliability, by replicating content to the "edge" of the Internet. Apart from the pure networking issues of the CDNs relevant to the establishment of the ...
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Conference Object
Pricing price information in E-commerce [Extended Abstract]
(Affiliation: Computer and Information Sci. Dept., University of Pennsylvania, Pittsburgh, PA, United StatesCorrespondence Address: Markopoulos, P.M.Computer and Information Sci. Dept., University of Pennsylvania, Pittsburgh, PA, United Statesemail: markopou@unagi.cis.upenn.edu, 2001)Shopbots and Internet sites that help users locate the best price for a product are changing the way people shop by providing valuable information on goods and services. This paper presents a first attempt to measure the ...
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Article
Probabilistic detection of FSM single state-transition faults based on state occupancy measurements
(2005)This note discusses a probabilistic methodology for detecting single permanent or transient functional changes in the state-transition mechanism of a deterministic finite-state machine (FSM). The associated probabilistic ...
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Conference Object
Probabilistic fault detection in finite-state machines based on state occupancy measurements
(2002)This paper discusses a probabilistic methodology for detecting permanent or transient functional changes in the state-transition mechanism of a deterministic finite-state machine (FSM). The associated detector observes the ...
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Conference Object
Quality evaluation of ultrasound imaging in the carotid artery
(2004)Image quality assessment plays an important role in various image-processing applications. In this work we evaluate image quality criteria based on mean square error, signal to noise error, and quality and structural ...
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Article
Quality evaluation of ultrasound imaging in the carotid artery based on normalization and speckle reduction filtering
(2006)Image quality is important when evaluating ultrasound images of the carotid for the assessment of the degree of atherosclerotic disease, or when transferring images through a telemedicine channel, and/or in other image ...
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Article
Reducing TPC-H benchmarking time
(2005)Benchmarking a system can be a time consuming operation. Therefore, many researchers have developed kernels and microbenchmarks. Nevertheless, these programs are not able to capture the details of a full application. One ...
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Article
A review on the stochastic firing behaviour of real neurons and how it can be modelled
(1995)The types of spike trains recorded in real neurons from different parts of the brain, can either be completely random or bursty. Certainly, at very, high firing rates regular spike trains are observed. This paper examines ...
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Snakes based segmentation of the common carotid artery intima media
(2007)Ultrasound measurements of the human carotid artery walls are conventionally obtained by manually tracing interfaces between tissue layers. In this study we present a snakes segmentation technique for detecting the ...
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Article
A standardised protocol for texture feature analysis of endoscopic images in gynaecological cancer
(2007)Background: In the development of tissue classification methods, classifiers rely on significant differences between texture features extracted from normal and abnormal regions. Yet, significant differences can arise due ...
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Article
Statistical analysis of multipath fading channels using generalizations of shot noise
(2008)This paper provides a connection between the shot-noise analysis of Rice and the statistical analysis of multipath fading wireless channels when the received signals are a low-pass signal and a bandpass signal. Under certain ...
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Article
Statistical analysis of multipath fading channels using shot-noise analysis: An introduction
(2001)In this paper, we introduce, the use of the shot-noise analysis, brought forward by Rice, as a natural tool in computing the various statistical properties of the multipath fading channels, in wireless communications. By ...