Results 11 to 20 of about 754,428 (266)
Medical image enhancement using threshold decomposition driven adaptive morphological filter [PDF]
, 2008 One of the most common degradations in medical images is their poor contrast quality. This suggests the use of contrast enhancement methods as an attempt to modify the intensity distribution of the image.
Mahmoud, Tarek A. +4 more
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Percolation threshold of carbon nanotubes filled unsaturated polyesters [PDF]
, 2010 This paper reports on the development of electrically conductive nanocomposites containing multi-walled carbon nanotubes in an unsaturated polyester matrix.
Partridge, I. K. +5 more
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Branching Process Approach for 2-Sat Thresholds [PDF]
Journal of Applied Probability, 2010 It is well known that, as n tends to ∞, the probability of satisfiability for a random 2-SAT formula on n variables, where each clause occurs independently with probability α / 2n, exhibits a sharp threshold at α = 1. We study a more general 2-SAT model in which each clause occurs independently but with probability αi / 2n, where i ∈ {0, 1, 2} is the ...
Mossel, Elchanan, Sen, Arnab
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Phase locking below rate threshold in noisy model neurons [PDF]
, 2010 The property of a neuron to phase-lock to an oscillatory stimulus before adapting its spike rate to the stimulus frequency plays an important role for the auditory system.
Stocks, Nigel G. +2 more
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Extremes of autoregressive threshold processes [PDF]
Advances in Applied Probability, 2009 In this paper we study the tail and the extremal behaviors of stationary solutions of threshold autoregressive (TAR) models. It is shown that a regularly varying noise sequence leads in general to only an O-regularly varying tail of the stationary solution. Under further conditions on the partition, it is shown however that TAR(
Brachner, C., Fasen, V., Lindner, A.
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On the structure of generalized threshold arch processes
Statistics & Probability Letters, 2010 The aim of this paper is to develop probabilistic studies, useful for applications, namely in what concerns the implementation and validation of subsequent statistical methods. More precisely, we establish new conditions on the stationarity and ergodicity of the GTARCH model and obtain an unique representation of its conditional volatility in terms of ...
Gonçalves, E., Mendes-Lopes, N.
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Capon- and APES-Based SAR Processing: Performance and Practical Considerations [PDF]
, 2010 This paper discusses the use of Capon's minimum-variance method (MVM) and Amplitude and Phase EStimation (APES) spectral-estimation algorithms to synthetic aperture radar rangeâ  azimuth focusing. The rationale of the algorithms is discussed.
Mallorqui, Jordi J. +3 more
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Efficient Temporal Processing of Naturalistic Sounds [PDF]
, 2008 In this study, we investigate the ability of the mammalian auditory pathway to adapt its strategy for temporal processing under natural stimulus conditions.
Lesica, Nicholas A. +5 more
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Threshold Estimation for a Spectrally Negative Lévy Process [PDF]
Mathematical Problems in Engineering, 2020 Consider a spectrally negative Lévy process with unknown diffusion coefficient and Lévy measure and suppose that the high frequency trading data is given. We use the techniques of threshold estimation and regularized Laplace inversion to obtain the estimator of survival probability for a spectrally negative Lévy process.
Honglong You, Chuncun Yin
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On the connectivity threshold of Achlioptas processes [PDF]
Journal of Combinatorics, 2014 In this paper we study the connectivity threshold of Achlioptas processes. It is well known that the classical Erdős-Renyi random graph with n vertices becomes connected whp (with high probability, i.e., with probability tending to one as n → ∞) when the number of edges is asymptotically 1 2n log n.
Mihyun Kang, Konstantinos Panagiotou
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