Browsing Mathematics, Statistics & Physics by Title
Now showing items 402-421 of 727
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Mass problems and density
( World Scientific Publishing Co. Pte Ltd , 2016 , Article)Recall that Ew is the lattice of Muchnik degrees of nonempty effectively compact sets in Euclidean space. We solve a long-standing open problem by proving that Ew is dense, i.e. satisfies {equation presented}. Our proof ... -
Mathematical analysis of ferromagnetic fluid embedded in a porous medium
( Elsevier , 2017 , Article)This article focuses on the impacts of heat transport phenomenon in a ferrofluid in presence of a magnetic dipole. The flow is caused by stretching of the surface. The analysis is disclosed with porous medium and thermal ... -
Mathematical modeling of the SARSCoV-2 epidemic in Qatar and its impact on the national response to COVID-19
( University of Edinburgh , 2021 , Article)Background Mathematical modeling constitutes an important tool for planning robust responses to epidemics. This study was conducted to guide the Qatari national response to the severe acute respiratory syndrome coronavirus ... -
The mathematical theory of finite and infinite dimensional topological spaces and its relevance to quantum gravity
( Elsevier Ltd , 2009 , Article)The present work gives first a review of the mathematical theory of finite and infinite dimensional topological spaces. Subsequently we connect the discussion with E-infinity theory and the theory of partially ordered sets. ... -
Maximum Likelihood Estimation in the Inverse Weibull Distribution with Type II Censored Data
( Horizon Research Publishing , 2022 , Article)We consider maximum likelihood estimation for the parameters and certain functions of the parameters in the Inverse Weibull (IW) distribution based on type II censored data. The functions under consideration are the Mean ... -
Measurements of the talus in the assessment of population affinity
( Elsevier Ltd , 2018 , Article)© 2018 Elsevier B.V. As part of their routine work, forensic anthropologists are expected to report population affinity as part of the biological profile of an individual. The skull is the most widely used bone for the ... -
Measuring skewness: We do not assume much
( Sharif University of Technology , 2021 , Article)Since skewness plays a vital role in different engineering phenomena, its accurate measurement gains significance. Several measures have been taken to quantify the extent of skewness in distributions over the years, but ... -
Measuring the fall of antihydrogen: The AEGIS experiment at CERN
( Elsevier B.V. , 2011 , Conference Paper)Considerable efforts have been made and are still being made to verify the validity of the principle of the equivalence of gravitational and inertial mass, one of the cornerstones of the classical theory of general relativity. ... -
Mechanical and thermal properties of gamma-ray irradiated polyethylene blends
( Elsevier , 2003 , Conference Paper)In this work, the results obtained by gamma-ray irradiation of polyethylene (PE) blends are presented. The blends were produced by injection molding at 220°C with different compositional ratios, i.e. 100/0, 15/85, 25/75, ... -
Membrane solubilization in erythrocytes as a measure of radiation exposure to fast neutrons
( IOP Publishing , 1999 , Article)Membrane solubilization and osmotic fragility of rat erythrocytes irradiated in vivo with fast neutron fluences ranging from 106 to 5 x 107 n cm-2 using a 252Cf source were measured instantaneously using a light scattering ... -
Metal/Metal-Oxide Nanoclusters for Gas Sensor Applications
( Hindawi Publishing Corporation , 2016 , Article Review)The development of gas sensors that are based on metal/metal-oxide nanoclusters has attracted intensive research interest in the last years. Nanoclusters are suitable candidates for gas sensor applications because of their ... -
A method for generating approximate similarity solutions of nonlinear partial differential equations
( Hindawi Publishing Corporation , 2014 , Article)Standard application of similarity method to find solutions of PDEs mostly results in reduction to ODEs which are not easily integrable in terms of elementary or tabulated functions. Such situations usually demand solving ... -
MHD effects on nanofluid with energy and hydrothermal behavior between two collateral plates application of new semi analytical technique
( Vinca Inst Nuclear Sci , 2017 , Article)In this study, heat and mass transfer characteristic of unsteady nanofluid flow between parallel plates is investigated. The important effect of Brownian motion and thermophoresis has been included in the model of nanofluid. ... -
Microscale Thermal Energy Transfer Over a Combined System of Thin Films: Analytical Approach
( Taylor and Francis Inc. , 2019 , Article)An analytical approach for the solution of the equation for phonon transport is presented for the combination thin films system. The transient phonon radiative transport model is considered and the combination of the silicon ... -
Microstructural investigation of gamma-irradiated ultra high molecular weight polyethylene in nitrogen atmosphere
( Trans Tech Publications , 2010 , Conference Paper)In this paper the results of structural changes in ultra high molecular polyethylene (UHMWPE) upon gamma irradiation and storage in nitrogen environment are reported. Based on differential scanning calorimetry (DSC), wide ... -
Microstructure of heat-treated steel probed by positron annihilation
(2001 , Conference Paper)Positron annihilation lifetime technique has been applied to study the microstructure change in steel after heat treatment. For this purpose, the specimens are heat treated in various manners; normalizing, annealing, ... -
Mixed EWMA-CUSUM and mixed CUSUM-EWMA modified control charts for monitoring first order autoregressive processes
( Taylor and Francis Ltd. , 2017 , Article)In practice most processes are known to produce autocorrelated observations. Autocorrelation degrades the performance of control charts by producing frequent false alarms when the process is stable or makes the charts ... -
Model for oscillations in the guidance of ions through insulating nanocapillaries
( IOP Publishing , 2011 , Conference Paper)The pre-equilibrium period of the ion guiding through insulating nanocapillaries is characterized by the production of temporary charge patches inside the capillaries. The dynamics of the charge patch creation is revealed ... -
Model predictive control of selective catalytic reduction in diesel-powered vehicles
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)This paper proposes a method to synthesize an optimal controller for the SCR section of the diesel exhaust after-treatment system, which is based on a system model consisting of coupled hyperbolic and parabolic partial ... -
Model robust profile monitoring for the generalized linear mixed model for Phase I analysis
( John Wiley and Sons Ltd , 2020 , Conference Paper)The generalized linear mixed model (GLMM) becomes very popular in profile monitoring, especially when the production processes follow nonnormal distribution. In most of the real-life applications in industry, medicine, ...