This paper deals with the threshold radius that warrants the use of single restraining rail for transit and railroads. Different railways use different threshold radius from 91m to 365m to provide restraining rail. These threshold figures are probably experience driven choices. The need for restraining rail may be related to a so-called derailment alarm coefficient of 1.2 sustained over 2m leng...

Abstract Previous numerical simulations have shown that strong winds can be produced in the hot accretion flows around black holes. Most of those studies focus only on region close to central hole; therefore it is unclear whether wind production stops at large radii Bondi radius. Bu et al. (2016) studied flow radius presence nuclear star gravity. They find that, when stars gravity important–com...

Let S be any bounded linear operator defined on a complex Hilbert space id="M2"> H . In this paper, we present some numerical radius inequalities involving the generalized Aluthge transform to attain upper bounds for radius. Numerical computations are carried out particular cases of...

  The problem of locating distribution centers (DCs) is one of the most important issues in design of supply chain. In previous researches on this problem, each DC could supply products for all of the customers. But in many real word problems, DCs can only supply products for customers who are in a certain distance from the facility, coverage radius. Thus, in this paper a multi-objective intege...

in the present work, the effects of changing punch and the die radius on several process parameters involved in deep drawing of aisi 304 steel have been studied. deep drawing process of a cylindrical cup was simulated and analysed by numerical modeling. the results were compared with those of obtained from a serie of experimental cupping tests. the comparison shows that: maximum drawing force d...