Mathematics, Statistics & Physics: المرسلات الحديثة
السجلات المعروضة 721 -- 728 من 728
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Density manifolds, geometric measures and high-energy physics in transfinite dimensions
( Elsevier B.V. , 2009 , Article)We discuss certain manifolds with density. Furthermore, we outline natural connections leading to E-infinity theory and high-energy physics from a geometric measure and transfinite dimensional theoretical viewpoints. -
Application of Homotopy Perturbation Method to Singularly Perturbed Volterra Integral Equations
( Asian Network for Scientific Information , 2008 , Article)In this study, the Homotopy-Perturbation Method (HPM) proposed by J.-H. He is adopted for solving singularly perturbed Volterra integral equations (SVIEs). Three numerical examples are given to demonstrate the effectiveness ... -
Wireless transmission using cooperation on demand
( Elsevier B.V. , 2009 , Article)Mobile users with single antennas can still take advantage of spatial diversity through repetition based cooperative transmission. In this paper, we consider a scheme in which the cooperation is triggered only if the ... -
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. ... -
Mössbauer effect study of Li21+Me4+Fe63+O122−spinels
( Baltzer Science Publishers, Baarn/Kluwer Academic Publishers , 1986 , Article)Mossbauer effect spectra are obtained for the cubic ferrites Li2 Me Fe6 O12 (where Me4+ is one of the tetravalent elements Ge, Si and Ti) at 78K up to their magnetic transition temperatures. In a rather large temperature ... -
Mössbauer study of ZnxNi5/3−xFe1Sb1/3O4 spinel ferrite
( Springer Verlag , 1985 , Article)The antimony substituted nickel ferrite ZnxNi5/3–xFe1Sb1/3O4 with different values ofx are prepared, checked by x-ray and studied with57Fe Mössbauer spectroscopy over a wide temperature range. Characteristic spectra of ... -
A 6th-order local approximation by a cubic curve
( Qatar University , 1997 , Article)We derive and present a MAPLE program for the construction of a parametric cubic polynomial curve which has sixth-order contract with a given smooth curve at a given point, thus providing a local sixth-order approximation ... -
Effect of gamma radiation on the morphology and Thermophysical properties of the pollen wall of Phoenix dactylifera L.
( Qatar University , 1994 , Article)Pollen grains of Phoenix dactylifera were exposed to different doses of gamma radiation (250,500,1000 rad and 1 M rad). To access the effect of radiation on the external morphology of the pollen grains, they were examined ...
