Results 21 to 30 of about 5,440,548 (293)
Related to the letters of an alphabet, entropy means the average number of binary digits required for the transmission of one character. Checking tables of statistical data, one finds that, in the first position of the numbers, the digits 1 to 9 occur ...
Welf Alfred Kreiner
doaj +1 more source
Asymptotic Probability Density Function of Nonlinear Phase Noise [PDF]
The asymptotic probability density function of nonlinear phase noise, often called the Gordon-Mollenauer effect, is derived analytically when the number of fiber spans is very large.
Cameron +7 more
core +3 more sources
An Alternative Lambert-Type Distribution for Bounded Data
In this article, we propose a new two-parameter distribution for bounded data such as rates, proportions, or percentages. The density function of the proposed distribution, presenting monotonic, unimodal, and inverse-unimodal shapes, tends to a positive ...
Héctor Varela +3 more
doaj +1 more source
Entropic Density Functional Theory
A formulation of density functional theory (DFT) is constructed as an application of the method of maximum entropy for an inhomogeneous fluid in thermal equilibrium. The use of entropy as a systematic method to generate optimal approximations is extended from the classical to the quantum domain.
Ahmad Yousefi, Ariel Caticha
openaire +4 more sources
Experimental assessment of presumed filtered density function models [PDF]
Measured filtered density functions (FDFs) as well as assumed beta distribution model of mixture fraction and “subgrid” scale (SGS) scalar variance, used typically in large eddy simulations, were studied by analysing experimental data, obtained from two ...
A. M. K. P. Taylor +4 more
core +1 more source
Density functional tight binding [PDF]
This paper reviews the basic principles of the density-functional tight-binding (DFTB) method, which is based on density-functional theory as formulated by Hohenberg, Kohn and Sham (KS-DFT). DFTB consists of a series of models that are derived from a Taylor series expansion of the KS-DFT total energy.
Marcus, Elstner, Gotthard, Seifert
openaire +2 more sources
A stochastic predator–prey model with two competitive preys and Ornstein–Uhlenbeck process
In this paper, a stochastic predator–prey model with two competitive preys and Ornstein–Uhlenbeck process is formulated and analysed, which is used to obtain a better understanding of the population dynamics.
Qun Liu
doaj +1 more source
A Novel Anti-Collision Algorithm in RFID for Internet of Things
This paper studies a novel anti-collision algorithm that is proposed in view of the problem, i.e., label reading collision in radio-frequency identification for Internet of Things.
Bai Zhi, Wang Sainan, He Yigang
doaj +1 more source
Evolution of Galaxy Luminosity Function and Luminosity Function by
Density Environment at 0.03
Using galaxy sample observed by the BATC large-field multi-color sky survey and galaxy data of SDSS in the overlapped fields, we study the dependence of the restframe $r$-band galaxy luminosity function on redshift and on large-scale environment.
Bolzonella M. +10 more
core +2 more sources
Extended social force model‐based mean shift for pedestrian tracking under obstacle avoidance
It has been shown that mean shift tracking algorithm can achieve excellent results in pedestrian tracking task. It empirically estimates the target position of current frame by locating the maximum of a density function from the local neighborhood of the
Xuguang Zhang +3 more
doaj +1 more source

