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Radon concentration determination in some dwellings of Doha city of Qatar
(
Elsevier
, 1997 , Article)
Yearly average radon concentrations have not been reported yet in Qatar. Only few measurements on indoor radon concentrations have been conducted during the autumn season in 1992. To complete these measurements a determination ...
Two-factor Heston model equipped with regime-switching: American option pricing and model calibration by Levenberg-Marquardt optimization algorithm
(
Elsevier B.V.
, 2023 , Article)
In this paper, we consider the pricing of American options under a regime-switching double Heston model, such that the interest rate and mean-reversion level parameters in both stochastic volatility models shift in various ...
Applied surface Science: Preface
(
Elsevier
, 2006 , Other)
not available
Proposing a Nondestructive and Intelligent System for Simultaneous Determining Flow Regime and Void Fraction Percentage of Gas-Liquid Two Phase Flows Using Polychromatic X-Ray Transmission Spectra
(
Springer
, 2021 , Article)
Two phase flows are of particular importance in various research fields. In the current article, a novel system consists of an X-ray tube and one sodium iodide crystal detector with ability of determining type of flow ...
Three-body effects in the annihilation of positrons on molecules
(
APS
, 2002 , Article)
The three body effects in the annihilation of positrons on molecules were discussed. The positron annihilation in ethylene gas at room temperature and at densities below one amagat, showed that the mean free positron ...
Linear hydrogen gas sensors based on bimetallic nanoclusters
(
Elsevier Ltd
, 2016 , Article)
This work reports on the fabrication of hydrogen gas sensors based on bimetallic palladium-copper nanoclusters. The nanoclusters were generated by sputtering and inert-gas condensation inside an ultra-high vacuum (UHV) ...
Re-emission of slow positrons from tungsten at elevated temperatures
(
Elsevier
, 2002 , Conference Paper)
A series of measurements have been made on the dependence of the intensity and energy spectrum of slow positrons re-emitted from polycrystalline tungsten foil held at temperatures of up to 500 °C. Irrespective of target ...
On certain rough integral operators and extrapolation
(
Victoria university
, 2009 , Article)
In this paper, we obtain sharp Lp estimates of two classes of maximal operators related to rough singular integrals and Marcinkiewicz integrals. These estimates will be used to obtain similar estimates for the related ...
Multi-species attributes as the condition for adaptive sampling of rare species using two-stage sequential sampling with an auxiliary variable
(
The Modelling and Simulation Society of Australia and New Zealand Inc
, 2011 , Conference Paper)
Assessing populations of rare species is challenging because of the large effort required to locate patches of occupied habitat and achieve precise estimates of density and abundance. The presence of a rare species has ...
SEIRD model for Qatar COVID-19 outbreak: A case study
(
Intercollegiate Biomathematics Alliance
, 2021 , Article)
The COVID-19 outbreak of 2020 has required many governments to develop mathematical-statistical models of the outbreak for policy and planning purposes. This work provides a tutorial on building a compartmental model using ...