Browsing Mathematics, Statistics & Physics by Title
Now showing items 593-612 of 689
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Sensitive SO2 gas sensor utilizing Pt-doped graphene nanoribbon: First principles investigation
( Elsevier Ltd , 2021 , Article)The objective of this work is to seek a highly sensitive gas sensor for the detection of sulfur dioxide (SO2) by investigating the impacts of passivation as well as metal doping of armchair-edge graphene nanoribbon (AGNR) ... -
Shrinkage estimates of covariance matrices to improve the performance of multivariate cumulative sum control charts
( Elsevier Ltd , 2018 , Article)Multivariate cumulative sum control charts require knowledge of the in-control process covariance parameters. Here, we show that the performance of the multivariate cumulative sum control charts for individual-observation ... -
A Simple Conservative Chaotic Oscillator with Line of Equilibria: Bifurcation Plot, Basin Analysis, and Multistability
( Hindawi , 2022 , Article)Here, a novel conservative chaotic oscillator is presented. Various dynamics of the oscillator are examined. Studying the dynamical properties of the oscillator reveals its unique behaviors. The oscillator is multistable ... -
A simple method for finding empirical likelihood type intervals for the ROC curve
( Wayne State University , 2007 , Article)Interval estimation of the ROC curve is considered using the empirical likelihood techniques. Suggested is a procedure that is very simple computationally and avoids the constrained optimization problems usually faced with ... -
A simple one-dimensional map-based model of spiking neurons with wide ranges of firing rates and complexities
( Elsevier , 2022 , Article)This paper introduces a simple 1-dimensional map-based model of spiking neurons. During the past decades, dynamical models of neurons have been used to investigate the biology of human nervous systems. The models simulate ... -
Simpler is also better in approximating fixed points
( Elsevier , 2008 , Article)In this paper we demonstrate that a number of fixed point iteration problems can be solved using a modified Krasnoselskij iteration process, which is much simpler to use than the other iteration schemes that have been defined -
A simulated annealing technique for multi-objective simulation optimization
( Elsevier , 2009 , Article)In this paper, we present a simulated annealing algorithm for solving multi-objective simulation optimization problems. The algorithm is based on the idea of simulated annealing with constant temperature, and uses a rule ... -
Simulating local fields in carbon nanotube-reinforced composites for infinite strip with voids
( Springer , 2022 , Article)A numerical simulation of the thermal properties is conducted for an isotropic and homogeneous infinite strip composite reinforced by carbon nanotubes (CNTs) and containing voids. The CNTs can be uniformly or randomly ... -
Simulation of natural convective heat transfer and entropy generation of nanoparticles around two spheres in horizontal arrangement
( Elsevier , 2021 , Article)Herein, laminar convective heat transfer from two horizontally arranged spheres has been evaluated by using numerical models inside water-based fluids incorporated with alumina (Al2O3), copper oxide (CuO), and copper (Cu) ... -
Simultaneous solutions for first order and second order slips on micropolar fluid flow across a convective surface in the presence of Lorentz force and variable heat source/sink
( Nature Publishing Group , 2019 , Article)This report presents the flow and heat transfer characteristics of MHD micropolar fluid due to the stretching of a surface with second order velocity slip. The influence of nonlinear radiation and irregular heat source/sink ... -
Sinc-based computations of eigenvalues of Dirac systems
( Springer Netherlands , 2007 , Article)The celebrated classical sampling theorem is used to compute approximate values of the eigenvalues of Dirac systems with eigenvalue parameter in the boundary conditions. We deal with problems with an eigenparameter in one ... -
Single-step feedback linearization with assignable dynamics for hyperbolic PDE
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)The present work proposes an extension of single-step feedback linearization with pole-placement formulation to the class of nonlinear hyperbolic systems. In particular, the mathematical formulation in the context of ... -
Single-step full-state feedback control design for nonlinear hyperbolic PDEs
( Taylor and Francis Ltd. , 2019 , Article)The present work proposes an extension of single-step formulation of full-state feedback control design to the class of distributed parameter system described by nonlinear hyperbolic partial differential equations (PDEs). ... -
Single-Walled Carbon-Nanotubes-Based Organic Memory Structures
( MDPI AG , 2016 , Article)The electrical behaviour of organic memory structures, based on single-walled carbon-nanotubes (SWCNTs), metal–insulator–semiconductor (MIS) and thin film transistor (TFT) structures, using poly(methyl methacrylate) (PMMA) ... -
Siting of pv power plants on inclined terrains
( Taylor and Francis Ltd. , 2014 , Article)Most of the studies conducted on solar energy assessment and solar system siting focus on flat terrains that are usually difficult and expensive to acquire in urban areas. This paper investigates the possibility of using ... -
Size-selected fabrication of alloy nanoclusters by plasma-gas condensation
( Elsevier Ltd , 2018 , Article)This work reports on the production of alloy Ti-Cu nanoclusters by magnetron sputtering and plasma-gas condensation inside an ultra-high compatible system. Inert-gas was introduced inside a source chamber to generate plasma, ... -
Social And Behavioral Risk Factors Influencing Driver's Involvement In Rd Traffic Accidents In Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)On average, traffic accidents kill around 137 people around the world every hour. In 2004, road injuries were the first leading cause of death and predicted to be the fifth leading cause of death by 2030. Although the ... -
Social and Demographic Factors Associated with Morbidities in Young Children in Egypt: A Bayesian Geo-Additive Semi-Parametric Multinomial Model
( Public Library of Science (PLoS) , 2016 , Article)Background Globally, the burden of mortality in children, especially in poor developing countries, is alarming and has precipitated concern and calls for concerted efforts in combating such health problems. Examples of ... -
Solving a class of integral equations via contractive mapping with rational type
( New York Business Global , 2020 , Article)In this paper, using rational type contractive conditions, the existence and uniqueness of common coupled fixed point theorem in the set up of Gb-metric spaces is studied. The derived result cover and generalize some ... -
Solving fractional diffusion and wave equations by modified homotopy perturbation method
( Elsevier B.V. , 2007 , Article)This Letter applies the modified He's homotopy perturbation method (HPM) suggested by Momani and Odibat to obtaining solutions of linear and nonlinear fractional diffusion and wave equations. The fractional derivative is ...