Browsing Mathematics, Statistics & Physics by Title
Now showing items 647-666 of 687
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T-tetrominoes tiling's Markov chain mixes fast
( Elsevier B.V. , 2018 , Article)Korn and Pak (2007) [3] conjectured that there exists a fully polynomial randomized approximation scheme (fpras) for approximating the number of ways of tiling a 4n x 4m rectangular lattice with T-tetrominoes. Using a flow ... -
Temperature and electric field effects on the dielectric dispersion of modified polyvinyl chloride
( Elsevier , 2003 , Article)The effect of electric field on the dielectric dispersion of modified polyvinyl chloride (PVC) has been investigated. The applied direct current (DC) field strength was ranging from 0 to 104 V cm−1. The complex permitivity ... -
Temperature dependence of the pressure induced monoclinic distortion in the spin S=1/2 Shastry–Sutherland compound SrCu2(BO3)2
( Elsevier Ltd , 2014 , Article)We investigate the monoclinic distortion that occurs at 4.7 GPa at room temperature in the frustrated Shastry-Sutherland model quantum magnet SrCu 2(BO3)2 as a function of pressure and temperature by means of powder and ... -
Testing statistical assumptions in research
( wiley , 2019 , Book)This book facilitates researchers in checking the assumptions of statistical tests used in their research by focusing on the importance of checking assumptions in using statistical methods, showing them how to check ... -
TESTING SYMMETRY USING A TRIMMED LONGEST RUN STATISTIC
( Blackwell Publishing Asia Pty Ltd. , 2007 , Article)A distribution-free test is proposed for the symmetry of a continuous distribution about a specified median. The test is based on a longest run statistic on the upper portion of the sequence of ordered �centred� observations ... -
Tests of a diamond field-assisted positron moderator
( Elsevier , 2002 , Conference Paper)Diagnostic studies have been performed on a 70 μm thick diamond film with a view to its development as a possible field-assisted moderator (FAM) for slow positron emission. The film was coated on one side with a 200 nm ... -
The common solutions of the split feasibility problems and fixed point problems
( Springer International Publishing , 2015 , Article)An extraordinary split problem, which can be regarded as a superimposition of the split feasibility problem and the split fixed point problem, is considered. A superimposed algorithm is presented. The analysis technique ... -
The generalized trust-region sub-problem with additional linear inequality constraints-Two convex quadratic relaxations and strong duality
( MDPI AG , 2020 , Article)In this paper, we study the problem of minimizing a general quadratic function subject to a quadratic inequality constraint with a fixed number of additional linear inequality constraints. Under a regularity condition, we ... -
The Ramsey number for two graphs of order 5
( Taylor and Francis Ltd. , 2018 , Article)For two graphs F1 and F2, the Ramsey number R(F1, F2) is the smallest positive integer r such that for every graph G on r vertices, G contains F1 as a subgraph or the complement of G contains F2 as a subgraph. We present ... -
The relevance of supply side taxation for attracting foreign direct investment to developing countries: evidence from Egypt
( University of New South Wales , 2021 , Article)Many developing countries commonly use tax incentives as a key instrument for attracting foreign direct investment (FDI). Empirical studies have identified a causal relationship between FDI and a number of determinants ... -
The Reliability, Validity and Normative Scores of the Bene-Anthony Family Relations Test for Use With Arab Children
( Frontiers Media S.A. , 2021 , Article)Background: The Bene-Anthony Family Relations Test (BAFRT) is one of the most widely used measures of family dynamics seen from a child's perspective. However, the most common issue surrounding this test is the lack of ... -
The Schottky-Klein prime function: A theoretical and computational tool for applications
( Oxford University Press , 2016 , Article)This article surveys the important role, in a variety of applied mathematical contexts, played by the socalled Schottky-Klein (S-K) prime function. While it is a classical special function, introduced by 19th century ... -
The Structure of the Free Volume in Poly(styrene-co-acrylonitrile) from Positron Lifetime and Pressure Volume Temperature (PVT) Experiments
( WILEY-VCH Verlag , 2004 , Article)Summary: The structure of the free volume and its temperature dependence between 25 and 190 °C of copolymers of styrene with acrylonitrile, SAN (0 to 50 mol-% AN), is studied by pressure volume temperature (PVT) experiments ... -
The theta-complete graph Ramsey number R(θn K5) = 4n - 3 for n = 6 and n≥ 10
( Charles Babbage Research Centre , 2017 , Article)For any two graphs F1 and F2, the graph Ramsey number r(F1, F2) is the smallest positive integer N with the property that every graph of at least N vertices contains F1 or its complement contains F2 as a subgraph. In this ... -
"The use of Arabic version of Social Communication Questionnaires (SCQ) in School Screening for Autism Spectrum Disorder (ASD) in Qatar"
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Introduction: The prevalence rate of Autism Spectrum Disorder (ASD) in Qatar is uncertain, obtaining a reliable estimate is important in shedding the light on the magnitude of the problem, and help in better planning for ... -
The use of fast initial response features on the homogeneously weighted moving average chart with estimated parameters under the effect of measurement errors
( John Wiley and Sons Ltd , 2021 , Article)Fast initial response (FIR) features are generally used to improve the sensitivity of memory-type control charts by shrinking time-varying control limits in the earlier stage of the monitoring regime. This paper incorporates ... -
Theoretical analysis of upper-convected Maxwell fluid flow with Cattaneo-Christov heat flux model
( Physical Society of the Republic of China , 2017 , Article)This paper discusses the mixed convection three-dimensional boundary layer flow of upper-convected Maxwell fluid over a stretching surface with Cattaneo-Christov heat flux model. Magnetohydrodynamic (MHD) combined with ... -
Thermalization times of positrons in molecular gases
(2000 , Article)The time that a particle takes to reach thermal equilibrium in gas is a gross measure of the efficiency with which such particle can exchange its kinetic energy with the medium. The time taken for positrons to reach thermal ... -
Three-body effects in the annihilation of positrons on molecules
( APS , 2002 , Article)The three body effects in the annihilation of positrons on molecules were discussed. The positron annihilation in ethylene gas at room temperature and at densities below one amagat, showed that the mean free positron ... -
Total asymptotically nonexpansive mappings in uniformly convex metric spaces
( Politechnica University of Bucharest , 2019 , Article)We approximate common fixed point of a pair of total asymptotically nonexpansive mappings in the setting of a uniformly convex metric space. The proposed algorithm is computationally simpler than the existing ones in the ...
