Search
Now showing items 341-350 of 395
Vacuum structure and PT -symmetry breaking of the non-Hermetian (iϕ3) theory
(
American Physical Society
, 2017 , Article)
In this work, we study the PT -symmetric (iϕ3) theory using the effective action formalism. To test the accuracy of the used technique, we apply it first to the PT -symmetric (−ϕ4) theory, where we reproduce the same results ...
Coronary Heart Disease Risk Factors among University Female Students
(
Radcliffe Medical Press
, 2017 , Article)
Background: Coronary heart disease (CHD) is a main cause
of morbidity and mortality globally. High levels of cholesterol
are considered a major risk factor of CHD. This study sought to
find out the prevalence of high ...
Preliminary test estimation in the two parameter exponential distribution based on record values
(
Nova Science Publishers
, 2010 , Article)
We considered estimation of the parameters of the exponential distribution based on record data in the presence of prior information. Preliminary test and shrinkage estimators are developed and their properties are ...
Estimation of common location parameter of two exponential populations based on records
(
Taylor and Francis Inc.
, 2018 , Article)
Consider the problem of estimating the common location parameter of two exponential populations using record data when the scale parameters are unknown. We derive the maximum likelihood estimator (MLE), the modified maximum ...
On the performance of coefficient of variation control charts in Phase I
(
John Wiley and Sons Ltd
, 2018 , Article)
Control charts are mainly carried out in 2 interconnected phases: Phase I (retrospective phase) and Phase II (monitoring phase). Phase I uses a stable historical sample to establish control limits that will be used later ...
Doped conductive polymers and single-walled carbon nanotubes as charge storage devices
(
Institute of Physics Publishing
, 2018 , Article)
Single-walled carbon nanotubes (SWCNTs), introduced as nano-fillers, were used as charge storage elements. Organic semiconducting polymers were produced by doping organic plasticizers with nonconductive polymers. The ...
Selective hydrogen gas sensor using CuFe 2 O 4 nanoparticle based thin film
(
Elsevier B.V.
, 2016 , Article)
Hydrogen gas sensors based on CuFe2O4 nanoparticle thin films are presented in this work. Each gas sensor was prepared by depositing CuFe2O4 thin film on a glass substrate by dc sputtering inside a high vacuum chamber. ...
Hydromagnetic couple-stress nanofluid flow over a moving convective wall: OHAM analysis
(
Elsevier Ltd
, 2016 , Article)
This communication presents the magnetohydrodynamics (MHD) flow of a couple-stress nanofluid over a convective moving wall. The flow dynamics are analyzed in the boundary layer region. Convective cooling phenomenon combined ...
Embodied water for urban economy: A three-scale input-output analysis for Beijing 2010
(
Elsevier
, 2015 , Article)
The scheme of a three-scale input-output analysis is presented in this study to investigate the water use profile of the urban economy in Beijing. Defined as total water including direct and indirect water, embodied water ...
On improved monitoring of linear profiles under modified successive sampling
(
John Wiley and Sons Ltd
, 2019 , Article)
Control charts are often used for the monitoring of quality characteristics of interest. There may exist some other characteristics that are associated with the main quality characteristic. A model that quantifies the ...