Browsing Mathematics, Statistics & Physics by Title
Now showing items 457-476 of 726
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Noise pollution in the hospital environment of a developing country: A case study of Lahore (Pakistan)
( Taylor and Francis Inc. , 2018 , Article)The present study investigates the noise pollution levels in public- and private-sector hospitals of Lahore. The noise pollution parameters were investigated from 20 public and 10 private hospitals. We observed that the ... -
Nonexistence results for the Cauchy problem for some fractional nonlinear systems of thermo-elasticity type
( Wiley-VCH Verlag , 2016 , Article)We study the nonexistence of global solutions to the Cauchy problem for systems of parabolic-hyperbolic or hyperbolic thermo-elasticity equations posed in RN. For power nonlinearities, we present threshold critical exponents ... -
Nonparametric multivariate covariance chart for monitoring individual observations
( Elsevier , 2022 , Article)Parametric and nonparametric multivariate control charts that are proven very useful in monitoring the covariance matrix of multivariate normally or “nearly” normally distributed continuous datasets have been proposed in ... -
A Note on a Class of Generalized Parabolic Marcinkiewicz Integrals along Surfaces of Revolution
( MDPI , 2022 , Article)In this article, certain sharp Lp estimates for a specific class of generalized Marcinkiewicz operators with mixed homogeneity associated to surfaces of revolution are established. By virtue of Yano’s extrapolation ... -
A Note on Parabolic Maximal Operators along Surfaces of Revolution via Extrapolation
( MDPI , 2022 , Article)Under weak conditions on the kernels, we obtain sharp Lp bounds for rough parabolic maximal integral operators over surfaces of revolution. By virtue of these bounds along with Yano’s extrapolation argument, we confirm the ... -
Novel Bayesian CUSUM and EWMA control charts via various loss functions for monitoring processes
( John Wiley and Sons Ltd , 2023 , Article)In this work, both the cumulative sum (CUSUM) and exponentially weighted moving average (EWMA) control charts have been reconfigured to monitor processes using a Bayesian approach. Our construction of these charts are ... -
A Novel Highly Nonlinear Quadratic System: Impulsive Stabilization, Complexity Analysis, and Circuit Designing
( Hindawi , 2022 , Article)This work introduces a three-dimensional, highly nonlinear quadratic oscillator with no linear terms in its equations. Most of the quadratic ordinary differential equations (ODEs) such as Chen, Rossler, and Lorenz have at ... -
Novel LiAlO2 Material for Scalable and Facile Lithium Recovery Using Electrochemical Ion Pumping
( MDPI , 2023 , Article)In this study, α-LiAlO2 was investigated for the first time as a Li-capturing positive electrode material to recover Li from aqueous Li resources. The material was synthesized using hydrothermal synthesis and air annealing, ... -
A novel method to generate key-dependent s-boxes with identical algebraic properties
( Elsevier , 2022 , Article)The s-box plays the vital role of creating confusion between the ciphertext and secret key in any cryptosystem, and is the only nonlinear component in many block ciphers. Dynamic s-boxes, as compared to static, improve ... -
Novel Mixed EWMA Dual-Crosier CUSUM Mean Charts without and with Auxiliary Information
( Hindawi Limited , 2022 , Article)The classical cumulative SUM (CUSUM) chart is commonly used to monitor a particular size of the mean shift. In many real processes, it is assumed that the shift level varies within a range, and the exact level of the shift ... -
A novel procedure for constructing invariant subspaces of a set of matrices
( Springer , 2022 , Article)A problem that is frequently encountered in a variety of mathematical contexts is to find the common invariant subspaces of a single or of a set of matrices. A new method is proposed that gives a definitive answer to this ... -
A Novel Simulation-Based Adaptive MEWMA Approach for Monitoring Linear and Logistic Profiles
( IEEE , 2021 , Article)As a common approach in the development of control charts in Statistical Process Control (SPC), an industrial process is monitored with one or more quality characteristics using their corresponding distributions. Note ... -
Numerical bifurcation of predator-prey fractional differential equations with a constant rate harvesting
( IOP Publishing , 2008 , Article)In this article saddle and Hopf bifurcation points of predator-prey fractional differential equations system with a constant rate harvesting are investigated. The numerical results based on Grunwald-Letnikov discretization ... -
Numerical comparison of methods for solving a special fourth-order boundary value problem
( Elsevier Inc. , 2007 , Article)In this paper, we implement relatively new analytical techniques, the differential transform method, Adomian decomposition, and homotopy perturbation method, for solving a fourth-order boundary value problem. In these ... -
Numerical computation of Mityuk's function and radius for circular/radial slit domains
( Elsevier , 2020 , Article)We consider Mityuk's function and radius which have been proposed in [15] as generalizations of the reduced modulus and conformal radius to the cases of multiply connected domains. We present a numerical method to compute ... -
Numerical computation of the capacity of generalized condensers
( Elsevier , 2020 , Article)We present a boundary integral method for numerical computation of the capacity of generalized condensers. The presented method applies to a wide variety of generalized condenser geometry including the cases when the plates ... -
Numerical Computation of the Conformal Map onto Lemniscatic Domains
( Springer , 2016 , Article)We present a numerical method for the computation of the conformal map from unbounded multiply-connected domains onto lemniscatic domains. For ℓ -times connected domains, the method requires solving ℓ boundary integral ... -
Numerical Computing of Preimage Domains for Bounded Multiply Connected Slit Domains
( Springer New York LLC , 2019 , Article)In this paper, for a given bounded multiply connected slit domai, we present an iterative numerical method for computing a conformally equivalent multiply connected domain G bounded by smooth Jordan curves and the conformal ... -
Numerical conformal mapping onto the entire complex plane bounded with finite straight slit and logarithmic spiral slits
( Institute of Physics Publishing , 2019 , Conference Paper)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 Paper)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 ...