AMERICAN METEOROLOGICAL SOCIETY | JANUARY 2007| 25 PB AFFILIATIONS: LEVY—Science Systems and Applications, Inc., Lanham, Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, and Department of Atmospheric and Oceanic Science, University of Maryland, College Park, College Park, Maryland; PINKER—Department of Atmospheric and Oceanic Science, University of Maryland, College Park...

In this article, stress analysis and energy estimation during cold-roll forming of symmetrical channel sections have been discussed. Geometry of sheet strip is pre-estimated by a shape function. Then longitudinal, transversal and shear strains have been calculated. Using both the Levy-Mises and the Prandtl Reuss equations, and also considering the Bauschinger effect, stress distributions have b...

Continuous-state branching processes (CSBPs) with immigration (CBIs), stopped on hitting zero, are generalized by allowing the process governing to be any Levy without negative jumps. Unlike CBIs, these newly introduced do not appear satisfy natural affine property level of Laplace transforms semigroups. Basic properties noted. Explicit formulae (on neighborhoods infinity) for first passage tim...

* Work supported by the Office of Ordnance Research, United States Army, Contract No. DA-36-034-ORD-1296. 1 W. Feller, "The General Diffusion Operator and Positivity-preserving Semi-groups in One Dimension," Ann. Math., 60, 417-436, 1954; "The Parabolic Differential Equations and the Associated Semni-groups of Transformations," ibid., 55, 468-519, 1952; J. L. Doob, Stochastic Processes (New Yor...