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We investigate a particular phase transition between two different tunneling regimes, direct and injection (Fowler-Nordheim), experimentally observed in the current-voltage characteristics of the light receptor bacteriorhodopsin (bR). Here,…

统计力学 · 物理学 2012-04-17 E. Alfinito , J. F. Millithaler , L. Reggiani

The Gumbel model is a very popular statistical model due to its wide applicability for instance in the course of certain survival, environmental, financial or reliability studies. In this work, we have introduced a bimodal generalization of…

统计方法学 · 统计学 2021-06-22 Cira E. G. Otiniano , Roberto Vila , Pedro C. Brom , Marcelo Bourguignon

We study the resistance fluctuation distribution of a thin film near electrical breakdown. The film is modeled as a stationary resistor networkunder biased percolation. Depending on the value of the external current,on the system sizes and…

凝聚态物理 · 物理学 2009-11-10 C. Pennetta , E. Alfinito , L. Reggiani , S. Ruffo

The probability distribution functions of the circulation of velocity in three-dimensional decaying isotropic turbulence are examined by the database of the numerical simulation based on the pseudospectral method. It is shown that the…

高能物理 - 理论 · 物理学 2009-10-22 Makoto Umeki

The probability density function (PDF) of the gas density in turbulent supersonic flows is investigated with high-resolution numerical simulations. In a systematic study, we compare the density statistics of compressible turbulence driven…

天体物理学 · 物理学 2009-11-13 Christoph Federrath , Ralf S. Klessen , Wolfram Schmidt

We calculate the probability density function for the order parameter fluctuations in the low temperature phase of the 2D-XY model of magnetism near the line of critical points. A finite correlation length, \xi, is introduced with a small…

统计力学 · 物理学 2009-11-07 B. Portelli , P. C. W. Holdsworth , M. Sellitto , S. T. Bramwell

We report on charge transport and current fluctuations in a single bacteriorhodpsin protein in a wide range of applied voltages covering direct and injection tunnelling regimes. The satisfactory agreement between theory and available…

介观与纳米尺度物理 · 物理学 2011-02-17 J. -F. Millithaler , E. Alfinito , L. Reggiani

We study the statistical properties of spatially averaged global injected power fluctuations for Taylor-Couette flow of a worm-like micellar gel formed by surfactant CTAT. At sufficiently high Weissenberg numbers (Wi) the shear rate and…

软凝聚态物质 · 物理学 2016-12-13 Sayantan Majumdar , A. K. Sood

This paper introduces a new generalization of the power generalized Weibull distribution called the generalized power generalized Weibull distribution. This distribution can also be considered as a generalization of Weibull distribution.…

统计理论 · 数学 2018-10-16 Mahmoud Ali Selim

The probability density function (PDF) of some global average quantity plays a fundamental role in critical and highly correlated systems. We explicitly compute this quantity as a function of the magnetization for the two dimensional XY…

高能物理 - 格点 · 物理学 2009-12-03 G. Palma , D. Zambrano

A discrete version of the Gumbel (Type I) extreme value distribution has been derived by using the general approach of discretization of a continuous distribution. Important distributional and reliability properties have been explored. It…

统计理论 · 数学 2014-10-29 Subrata Chakraborty , Dhrubajyoti Chakravarty

Copulas allow a flexible and simultaneous modeling of complicated dependence structures together with various marginal distributions. Especially if the density function can be represented as the product of the marginal density functions and…

统计方法学 · 统计学 2020-08-31 Jae Youn Ahn , Sebastian Fuchs , Rosy Oh

The orientation fluctuations of the director of a liquid crystal are measured, by a sensitive polarization interferometer, close to the Fr\'eedericksz transition, which is a second order transition driven by an electric field. We show that…

统计力学 · 物理学 2010-09-15 Sylvain Joubaud , Artem Petrosyan , Sergio Ciliberto , Nicolas Garnier

We study local power fluctuations in numerical simulations of stationary, homogeneous, isotropic turbulence in two and three dimensions with Gaussian forcing. Due to the near-Gaussianity of the one-point velocity distribution, the…

统计力学 · 物理学 2009-11-13 M. M. Bandi , Sergei G. Chumakov , Colm Connaughton

The modality is important topic for modelling. Using parametric models is an efficient way when real data set shows trimodality. In this paper we propose a new class of trimodal probability distributions, that is, probability distributions…

统计方法学 · 统计学 2022-04-08 Roberto Vila , Victor Serra , Mehmet N. Çankaya , Felipe Quintino

A new unimodal distribution family indexed by the mode and three other parameters is derived from a mixture of a Gumbel distribution for the maximum and a Gumbel distribution for the minimum. Properties of the proposed distribution are…

统计方法学 · 统计学 2024-07-02 Qingyang Liu , Xianzheng Huang , Haiming Zhou

The Gumbel-Softmax is a continuous distribution over the simplex that is often used as a relaxation of discrete distributions. Because it can be readily interpreted and easily reparameterized, it enjoys widespread use. We propose a modular…

机器学习 · 统计学 2022-08-30 Andres Potapczynski , Gabriel Loaiza-Ganem , John P. Cunningham

Intrinsic ripples with various configurations and sizes were reported to affect the physical and chemical properties of 2D materials. By performing molecular dynamics simulations and theoretical analysis, we use two geometric models of the…

材料科学 · 物理学 2022-08-31 Jin Yu , Mikhail I. Katsnelson , Shengjun Yuan

The failure probabilities or the strength distributions of heterogeneous 1D systems with continuous local strength distribution and local load sharing have been studied using a simple, exact, recursive method. The fracture behavior depends…

无序系统与神经网络 · 物理学 2009-10-31 B. Q. Wu , P. L. Leath

We consider a graphene sheet in the vicinity of a substrate, which contains charged impurities. An analytic expression for the probability distribution function of voltage fluctuations due to the charged impurities is derived. The…

介观与纳米尺度物理 · 物理学 2008-01-14 Victor Galitski , Shaffique Adam , S. Das Sarma
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