Browsing Mathematics, Statistics & Physics by Title
Now showing items 304-323 of 694
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Harmonic image inpainting using the charge simulation method
( Springer , 2022 , Article)It was recently reported that harmonic inpainting or Laplace interpolation when used in the context of image compression can yield impressive reconstruction results if the encoded pixels were carefully selected. Mathematically, ... -
Heat Transfer Attributes of Gold–Silver–Blood Hybrid Nanomaterial Flow in an EMHD Peristaltic Channel with Activation Energy
( MDPI , 2022 , Article)The heat enhancement in hybrid nanofluid flow through the peristaltic mechanism has received great attention due to its occurrence in many engineering and biomedical systems, such as flow through canals, the cavity flow ... -
Heat Transfer Characteristics of Fractionalized Hydromagnetic Fluid with Chemical Reaction in Permeable Media
( MDPI , 2022 , Article)This manuscript optimizes the conjugate heat transfer and thermal-stress analysis for hydromagnetic Brinkman fluid with chemical reaction in permeable media. The governing equations of non-Newtonian Brinkman fluid have ... -
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 ... -
Herd immunity against severe acute respiratory syndrome coronavirus 2 infection in 10 communities, qatar
( Centers for Disease Control and Prevention (CDC) , 2021 , Article)We investigated what proportion of the population acquired severe acute respiratory syndrome coronavirus 2 (SARSCoV- 2) infection and whether the herd immunity threshold has been reached in 10 communities in Qatar. The ... -
Hermite-Hadamard and Fejer-type inequalities for generalized η-convex stochastic processes
( Taylor and Francis Ltd. , 2023 , Article)In this article, we introduce the concept of (Formula presented.) -convex stochastic processes on coordinates and establish Hermite-Hadamard-type inequality for these stochastic processes. Moreover, we prove new integral ... -
Hermite-Hadamard type integral inequalities for multidimensional general h-harmonic preinvex stochastic processes
( Taylor and Francis Ltd. , 2022 , Article)In this paper, we introduce a new concept of preinvex functions which is called general h-harmonic preinvex for real-valued stochastic processes. Further, we define the multidimensional general h-harmonic preinvex stochastic ... -
Hermite-Hadamard-type inequalities for interval-valued preinvex functions via Riemann-Liouville fractional integrals
( Springer Science and Business Media Deutschland GmbH , 2021 , Article)In this paper, we introduce (h1, h2) -preinvex interval-valued function and establish the Hermite-Hadamard inequality for preinvex interval-valued functions by using interval-valued Riemann-Liouville fractional integrals. ... -
Hidden and Self-Excited Collective Dynamics of a New Multistable Hyper-Jerk System with Unique Equilibrium
(2022 , Article)Nonlinear dynamical systems with hidden attractors belong to a recent and hot area of research. Such systems can exist in different forms, such as without equilibrium or with a stable equilibrium point. This paper focuses ... -
High prevalence of the risk of overweight and overweight among Qatari children ages 9 through 11
( Emerald , 2009 , Article)Purpose – The purpose of this paper is to estimate the prevalence of the risk of overweight and overweight in Qatari children ages 9 through 11 and to compare the prevalence using CDC and IOTF cut-offs. Design/methodo ... -
High sensitivity H2S gas sensors using lead halide perovskite nanoparticles
( Elsevier , 2022 , Article)We report the development of a high sensitivity H2S gas sensor based on perovskite nanoparticles, which can be synthesized using relatively simple solution-growth methods. The gas sensor was fabricated from the metal halide ... -
Higher order self-adjoint operators with polynomial coefficients
( Texas State University - San Marcos , 2017 , Article)We study algebraic and analytic aspects of self-adjoint operators of order four or higher with polynomial coefficients. As a consequence, a systematic way of constructing such operators is given. The procedure is applied ... -
History of primary-series and booster vaccination and protection against Omicron reinfection
( American Association for the Advancement of Science , 2023 , Article)Laboratory evidence suggests a possibility of immune imprinting for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. We investigated the differences in the incidence of SARS-CoV-2 reinfection in a ... -
HIV incidence and impact of interventions among female sex workers and their clients in the Middle East and north Africa: a modelling study
( Elsevier , 2022 , Article)Background: The incidence of HIV infection among female sex workers and their clients in the Middle East and north Africa is not well known. We aimed to assess HIV incidence, the contribution of heterosexual sex work ... -
Homotopy analysis method for fractional IVPs
( Elsevier , 2007 , Article)In this paper, the homotopy analysis method is applied to solve linear and nonlinear fractional initial-value problems (fIVPs). The fractional derivatives are described by Caputo’s sense. Exact and/or approximate analytical ... -
Homotopy perturbation method for nonlinear partial differential equations of fractional order
( Elsevier B.V. , 2007 , Article)The aim of this Letter is to present an efficient and reliable treatment of the homotopy perturbation method (HPM) for nonlinear partial differential equations with fractional time derivative. The fractional derivative is ... -
Horvitz-thompson estimator of population mean under inverse sampling designs
( Iranian Mathematical Society , 2012 , Article)Inverse sampling design is generally considered to be an appropriate technique when the population is divided into two subpopulations, one of which contains only a few units. Here, we de- rive the Horvitz-Thompson estimator ... -
Hybrid differential evolutionary strawberry algorithm for real-parameter optimization problems
( Bellwether Publishing, Ltd. , 2021 , Article)Evolutionary algorithms (EAs) is a family of population-based nature optimization methods. In contrast to classical optimization techniques, EAs provide a set of approximated solutions for different test suites of optimization ... -
Hybrid isothermal model for the ferrohydrodynamic chemically reactive species
( Institute of Physics Publishing , 2019 , Article)A hybrid isothermal model for the homogeneous-heterogeneous reactions in ferrohydrodynamic boundary layer flow is established. The characteristics of Newtonian heating and magnetic dipole in a ferrofluid due to a stretchable ... -
Hydrogen Atom and Equivalent Form of the Levy-Leblond Equation
( Institute of Physics Publishing , 2017 , Article)We discuss the equivalent form of the Levy-Leblond equation such that the nilpotent matrices are two-dimensional. We show that this equation can be obtained in the non-relativistic limit of the (2+1)-dimensional Dirac ...