Results 11 to 20 of about 4,286,494 (274)

Influence of Ultrasonic Frequency on Wax Removal of Oil Well Casing

open access: yesShiyou jixie, 2022
Ultrasonic wax removal process has been widely used in China for its good engineering adaptability,high intelligence and low environmental pollution.In order to identify the influence of ultrasonic frequency on wax removal of oil well casing,based on the
Zhang Ziheng   +4 more
doaj  

Limits in the characteristic function description of non-Lindblad-type open quantum systems [PDF]

open access: yes, 2005
In this paper I investigate the usability of the characteristic functions for the description of the dynamics of open quantum systems focussing on non-Lindblad-type master equations.
E. Joos   +8 more
core   +3 more sources

Value distribution and the Lemma of the logarithmic derivative on polydiscs

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
Value distribution is developed on polydiscs with the special emphasis that the value distribution function depend on a vector variable. A Lemma of the logarithmic derivative for meromorphic functions on polydiscs is derived. Here the Bergman boundary of
Wilhelm Stoll
doaj   +1 more source

Cooperation or Localization in European Capacity Markets? A Coalitional Game over Graph Approach

open access: yesEnergies, 2018
Capacity markets, as a means to address the capacity adequacy issue, are constantly becoming an important part of the European internal electricity market.
Giorgos Stamtsis, Haris Doukas
doaj   +1 more source

Optimal Histogram Filter

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2023
The article discusses a technique for constructing an optimal histogram filter and its modifications, taking into account a priori information about the expected probability distribution density.
A. V. Ausiannikau, V. M. Kozel
doaj   +1 more source

Pricing Bermudan options under local L\'evy models with default [PDF]

open access: yes, 2016
We consider a defaultable asset whose risk-neutral pricing dynamics are described by an exponential L\'evy-type martingale. This class of models allows for a local volatility, local default intensity and a locally dependent L\'evy measure.
Borovykh, Anastasia   +2 more
core   +2 more sources

The discounted local limit theorems for large deviations

open access: yesLietuvos Matematikos Rinkinys, 2008
Theorems of large deviations, both in the Cramer zone and the Linnik power zones, for the normal approximation of the distribution density function of normalized sum Sv = \sum∞ k=0 vkXk, 0 < v < 1, of i.i.d.
Leonas Saulis, Dovilė Deltuvienė
doaj   +1 more source

A Generalization of APN Functions for Odd Characteristic [PDF]

open access: yes, 2016
Almost perfect nonlinear (APN) functions on finite fields of characteristic two have been studied by many researchers. Such functions have useful properties and applications in cryptography, finite geometries and so on.
Kuroda, Masamichi, Tsujie, Shuhei
core   +2 more sources

On the characteristic function of a sum of M-dependent random variables

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1986
Let S=f1+f2+…+fn be a sum of 1-dependent random variables of zero mean. Let σ2=ES2, L=σ−3∑1≦i≦nE|fi|3.
Wansoo T. Rhee
doaj   +1 more source

Device Free Detection in Impulse Radio Ultrawide Bandwidth Systems

open access: yesSensors, 2021
In this paper, an analytical framework is presented for device detection in an impulse radio (IR) ultra-wide bandwidth (UWB) system and its performance analysis is carried out.
Waqas Bin Abbas   +4 more
doaj   +1 more source

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