Temperature dependence of S.C.L.C. in anthracene crystals

Zusammenfassung Aus der Temperaturabhängigkeit des Löcherstroms in Anthrazen-Einkristallen wird die Aktivierungsenergie bei verschiedenen Dunkelstromwerten gemessen. Die Aktivierungsenergien liegen zwischen 0,65 eV und 0,95 eV für Ströme von 10^–10 bzw. 10^–12 Ampère bei Zimmertemperatur.Ferner wird für mehrere Temperaturwerte die Aktivierung der in Haftstellen sitzenden Ladungsträger mit Hilfe von Licht verschiedener Intensität untersucht.     

O.R.C.S. 1981 Results

Journal of the Operational Research Society -     

Two Simple Derivations of Universal Bounds for the C.B.S. Inequality Constant

Universal bounds for the constant in the strengthened Cauchy-Bunyakowski-Schwarz inequality for piecewise linear-linear and piecewise quadratic-linear finite element spaces in 2 space dimensions are derived. The bounds hold for arbitrary shaped triangles, or equivalently, arbitrary matrix coefficients for both the scalar diffusion problems and the elasticity theory equations.     

Maximal Norm of C(S)

1991 Mathematics Subject Classification 46B20, 46B04.     

On accuracy and efficiency of the CESE-method of C. S. Chang for one-dimensional unstaedy flow computation

About twenty years ago a NASA-group around S. C. Chang began to develop a method using space-time domains as elements for unstaedy flow computation. There are two kinds of elements. One within which the linearized form of the underlying differential equation is satisfied and one whithin which space-time flux is conserved. Therefore the method is called conservation-element solution-element or shortly CESE. Applied to one-dimensional flow equations we show conditions under which the method in the version of Jerez et al. [1] is - second order accurate and - more efficient than Lax-Wendroff type methods. (© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)     

Estimation of the energy of the primary and C.M.S. velocity of jets by various methods

The relative merits of three methods (a) the median angle method, (b) the Castagnoli method, (c) the Yajima-Hasegawa method, for the estimation of the energy of the primary are examined. The correction factors for the breakdown of the conditions of velocity independent spectrum and symmetry of jets are obtained.