Results 31 to 40 of about 11,771,558 (147)

A finite-time maintenance policy of deteriorating systems with multiple dependent performance characteristics

open access: yesJournal of Management Science and Engineering, 2022
Condition monitoring and health management of deteriorating systems have attracted significant attentions in reducing failure rate and ensuring normal operation of systems.
Shuguang He   +4 more
doaj   +1 more source

Low-noise reconstruction method for coded-aperture gamma camera based on multi-layer perceptron

open access: yesNuclear Engineering and Technology, 2020
Accurate localization of radioactive materials is crucial in homeland security and radiological emergencies. Coded-aperture gamma camera is an interesting solution for such applications and can be developed into portable real-time imaging devices ...
Rui Zhang   +7 more
doaj   +1 more source

Reliability sensitivity numerical analysis of mechanical structure based on gamma processes

open access: yesAdvances in Mechanical Engineering, 2016
Using random variables to describe uncertain parameters in structural systems, its initial strength and the evolution process of the strength degradation is regarded as the Gamma process.
Yanshan Zhang, Zhengmao Yang
doaj   +1 more source

On the enhanced structures and rough paths integrals for time-changed paths

open access: yesJournal of Numerical Analysis and Approximation Theory
In this paper, we study the effects of a discontinuous time change \( \phi \) on a continuous path \( x \). While rough integration in this setting poses significant challenges, we construct an enhancement for the time-changed path \( x \circ \phi ...
Mounir Bedhiafi
doaj   +1 more source

Pricing of European, Bermudan and American Options under the\ud Exponential Variance Gamma Process [PDF]

open access: yes, 2009
This dissertation reports on a study of the pricing of European, Bermudan and American put options where the stock price is driven by an exponential Variance Gamma process.
Whitley, Alan
core  

Pricing and Hedging Index Options under Mean-Variance Criteria in Incomplete Markets

open access: yesComputation, 2023
This paper studies the portfolio selection problem where tradable assets are a bank account, and standard put and call options are written on the S&P 500 index in incomplete markets in which there exist bid–ask spreads and finite liquidity.
Pornnapat Yamphram   +2 more
doaj   +1 more source

Option Pricing Under the Variance Gamma Process [PDF]

open access: yes, 2004
In this dissertation we price European and American vanilla and barrier options assuming that the underlying follows the variance gamma process. We solve numerically the problem implementing a finite difference algorithm and we present numerical ...
Fiorani, Filo
core   +1 more source

Bayesian optimization of EWMA control charts: A case on process variance monitoring

open access: yesKuwait Journal of Science
Bayesian control charts (BCC) are gaining prominence as powerful statistical process control tools for analyzing manufacturing processes and managing process variability.
Tahir Abbas   +3 more
doaj   +1 more source

ESTIMATION OF INTRUSION DETECTION PROBABILITY BY PASSIVE INFRARED DETECTORS [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
Subject of Research. The paper deals with estimation of detection probability of intruder by passive infrared detector in different conditions of velocity and direction for automated analyses of physical protection systems effectiveness. Method. Analytic
V. V. Volkhonskiy, S. L. Malyshkin
doaj   +1 more source

Keeping risk alive

open access: yesRisk Sciences
Risk premia in markets rise with the degree of discontinuity in price motion. This discontinuity is measured by the scale and speed coefficients of price movements embedded in the bilateral gamma process, which is modeled as the difference of two ...
Dilip B. Madan, King Wang
doaj   +1 more source

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