Mathematics, Statistics & Physics: Recent submissions
Now showing items 601-620 of 781
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A Privacy Scheme for Digital Images Based on Quantum Particles
( Springer , 2019 , Article)Quantum processing inspired every field of science and technology. Quantum digital content privacy schemes usually employs photons to communicate a key. In this article, we are utilizing different states which correspond ... -
Electron-impact ionization of W5+
( American Physical Society , 2019 , Article)Electron-impact single-ionization cross sections for the W5+ ion have been studied experimentally and theoretically. Measurements of a detailed ionization spectrum and of absolute cross sections were performed employing ... -
Phase-space matching between bent Laue and flat Bragg crystals
( International Union of Crystallography , 2019 , Article)Through phase-space analysis of Dumond diagrams for a flat Bragg crystal, a single bent Laue crystal and a monochromator consisting of double-bent Laue crystals, this work shows that it is possible to match the flat Bragg ... -
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 ... -
Prevalence and correlates of autism spectrum disorder in Qatar: a national study
( Blackwell Publishing Ltd , 2019 , Article)Background Few epidemiological data on autism spectrum disorders (ASD) exist for Arabic countries. We conducted the first survey of ASD in Qatar, a population with high consanguinity level. Methods This cross‐sectional ... -
Construction of (n+ 1) -dimensional dual-mode nonlinear equations: multiple shock wave solutions for (3 + 1) -dimensional dual-mode Gardner-type and KdV-type
( Springer International Publishing , 2019 , Article)The goal of this study is to offer an exclusive functional conversion to produce (n+ 1) -dimensional dual-mode nonlinear equations. This transformation has been implemented and new (3 + 1) -dimensional dual-mode Gradner-type ... -
Application of garch model to forecast data and volatility of share price of energy (Study on adaro energy Tbk, LQ45)
( Econjournals , 2018 , Article)Most of the times, Economic and Financial data not only become highly volatile but also show heterogeneous variances (heteroscedasticity). The common method of the Box Jenkins cannot be used for data modeling as the method ... -
Network Analysis of MERS Coronavirus within Households, Communities, and Hospitals to Identify Most Centralized and Super-Spreading in the Arabian Peninsula, 2012 to 2016
( Hindawi Limited , 2018 , Article)Contact history is crucial during an infectious disease outbreak and vital when seeking to understand and predict the spread of infectious diseases in human populations. The transmission connectivity networks of people ... -
Monitoring Coefficient of Variation Using Progressive Mean Technique
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference)Control charts are mostly used for the monitoring of process mean and dispersion. In cases, when the process standard deviation is proportional to the mean, it is recommended to use control charts based on coefficient of ... -
Numerical conformal mapping onto the entire complex plane bounded with finite straight slit and logarithmic spiral slits
( Institute of Physics Publishing , 2019 , Conference)This paper presents a fast boundary integral equation method with for computing conformal mappings of multiply connected regions. We consider the canonical region consists of the entire complex plane bounded by a finite ... -
Numerical conformal mapping onto the exterior unit disk with a straight slit and logarithmic spiral slits
( Institute of Physics Publishing , 2019 , Conference)This paper presents a fast boundary integral equation method for numerical conformal mapping of unbounded multiply connected regions onto a disk with an infinite straight slit and finite logarithmic spiral slits. Some ... -
Invariant characterization of scalar third-order ODEs that admit the maximal point symmetry Lie algebra
( John Wiley and Sons Ltd , 2018 , Article)The Cartan equivalence method is used to deduce an invariant characterization of the scalar third-order ordinary differential equation u"' = f(x, u, u', u"), which admits the maximal 7-dimensional point symmetry Lie algebra. ... -
Enhancing the performance of the EWMA control chart for monitoring the process mean using auxiliary information
( John Wiley and Sons Ltd , 2019 , Article)When using control charts to monitor manufacturing processes, the exponentially weighted moving average (EWMA) control chart is useful for detecting persistent shifts in the process parameter. This paper proposes enhancements ... -
Investigation of optical and electrical properties of Cobalt-doped Ge-Sb-S thin film
( Elsevier B.V. , 2019 , Article)Amorphous Germanium Antimony Sulphide (Ge-Sb-S) doped with Cobalt (Co) have been deposited on glass substrates by thermal evaporation technique on a glass substrate. The films deposited onto glass substrates are characterized ... -
A note on the Ramsey numbers for theta graphs versus the wheel of order 5
( Kalasalingam University , 2018 , Article)The study of exact values and bounds on the Ramsey numbers of graphs forms an important family of problems in the extremal graph theory. For a set of graphs S and a graph F, the Ramsey number R(S,F) is the smallest positive ... -
Association between Soft Drink Consumption and Aggressive Behaviour among a Quarter Million Adolescents from 64 Countries Based on the Global School-Based Student Health Survey (GSHS)
( MDPI , 2020 , Article)Soft drink consumption has become a significant public health concern that is associated with various adverse health outcomes.We aim to examine the association between soft drink consumption and aggressive behavior among ... -
Hepatitis C virus infection spontaneous clearance: Has it been underestimated?
( Elsevier B.V. , 2018 , Article)Objectives: Hepatitis C virus (HCV) clearance rate (fclearance) is defined as the proportion of infected persons who will spontaneously clear their infection after acute infection. We aimed to estimate fclearance using a ... -
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 ... -
Approximating the tail probabilities of the longest run in a sequence of Bernoulli trials
( Taylor and Francis Ltd. , 2018 , Article)We consider the longest run of either successes or failures in a sequence of (Formula presented.) Bernoulli trials. The exact distribution of this random variable is obtained using probability generating function techniques. ...
