scholarly journals Dynamics of Mechanisms with Cams Illustrated in the Classical Distribution

2017 ◽  
Vol 10 (2) ◽  
pp. 551-567 ◽  
Author(s):  
Relly Victoria Virgil Petrescu ◽  
Raffaella Aversa ◽  
Bilal Akash ◽  
Ronald Bucinell ◽  
Juan Corchado ◽  
...  
Author(s):  
Stefan Thurner ◽  
Rudolf Hanel ◽  
Peter Klimekl

Phenomena, systems, and processes are rarely purely deterministic, but contain stochastic,probabilistic, or random components. For that reason, a probabilistic descriptionof most phenomena is necessary. Probability theory provides us with the tools for thistask. Here, we provide a crash course on the most important notions of probabilityand random processes, such as odds, probability, expectation, variance, and so on. Wedescribe the most elementary stochastic event—the trial—and develop the notion of urnmodels. We discuss basic facts about random variables and the elementary operationsthat can be performed on them. We learn how to compose simple stochastic processesfrom elementary stochastic events, and discuss random processes as temporal sequencesof trials, such as Bernoulli and Markov processes. We touch upon the basic logic ofBayesian reasoning. We discuss a number of classical distribution functions, includingpower laws and other fat- or heavy-tailed distributions.


2014 ◽  
Vol 28 (24) ◽  
pp. 1450164 ◽  
Author(s):  
Adina Ceausu-Velcescu ◽  
Paul Blaise ◽  
Yuri P. Kalmykov

The stationary Wigner functions (WFs) have been calculated for particles evolving in a quartic double-well potential V(x) = ax2/2+bx4/4(a < 0 and b > 0), at temperature T. In the high temperature limit, the results totally agree with those obtained using Wigner's perturbative method of deriving quantum corrections to the classical distribution function. Comparison with the perturbative approach allows one to establish the range of applicability of the latter. For illustration, the second moments of the position and momentum have been calculated for the double-well potential. Furthermore, the time-evolution of the WFs for a state initially located at one of the wells has been also investigated to show the tunneling effect.


2014 ◽  
Vol 2014 ◽  
pp. 1-17 ◽  
Author(s):  
C. Boiti ◽  
D. Jornet ◽  
J. Juan-Huguet

We introduce the wave front setWF*P(u)with respect to the iterates of a hypoelliptic linear partial differential operator with constant coefficients of a classical distributionu∈𝒟′(Ω)in an open set Ω in the setting of ultradifferentiable classes of Braun, Meise, and Taylor. We state a version of the microlocal regularity theorem of Hörmander for this new type of wave front set and give some examples and applications of the former result.


1968 ◽  
Vol 21 (2) ◽  
pp. 121 ◽  
Author(s):  
AA Barker

A quantum mechanical calculation of the radial distribution function g".m.(r) for unlike particles in a hydrogenous plasma is presented. Results for a neutral plasma over a range of temperatures show that gq.m.(r) differs significantly from the corresponding classical distribution function g.(r) = exp(fJel/r) when r is less than a chosen distance r" the value of which is temperature dependent. The effect of shielding, the relative contribution from scattered and bound states, and the relation to percentage ionization are discussed.


2019 ◽  
Vol 3 (1) ◽  
pp. 82-101
Author(s):  
Relly Victoria Virgil Petrescu

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