Abstract Chromium manganese austenitic stainless steel is exhibiting an admirable amalgamation of higher strength and stress corrosion resistance. This economical developed to fulfill the requirement a variety consumers for high temperature structural applications. Hitherto, limitation associate with TIG welding process low depth penetration which reduces productivity. Activated tungsten inert ...

In this paper we introduce a practical flight coupon automatic processing system for scanning and recognition. We discuss the coupon classification, character location and binarization. And emphasize a high performance character segmentation and recognition engine, which are proved very effective. The results of experiment and commercial running applying the system are presented.

In this paper we present an analysis of some generalization of a classic urn and balls model. In our model each urn has a fixed capacity and balls flow between urns. We will show a general form of formulas for the expected numbers of “black” balls in a given urn and we analyze some special cases (parallel and serial configurations) We are mainly interested in a counterpart of the Coupon Collect...

This paper addresses the problem of dynamic asset allocation under a bounded shortfall risk in a market composed of three assets: cash, stocks and a zero coupon bond. The dynamics of the instantaneous short rates is driven by a Hull and White model. In this setting, we determine and compare optimal investment strategies maximizing the CRRA utility of terminal wealth with and without value at ri...

In this paper we refine a Poisson limit theorem of Gnedenko and Kolmogorov (1954): we determine the error order of a Poisson approximation for sums of asymptotically negligible integer-valued random variables that converge in distribution to the Poisson law. As an application of our results, we investigate the case of the coupon collector’s problem when the distribution of the collector’s waiti...

The Appalachian region has experienced persistently higher poverty and lower earnings than the rest of the United States. We examine whether lower skill differentials or differences in the returns to those skills lie at the root of the persistent Appalachian wage gap. Using Census data, we decompose the Appalachian wage gap using both mean and full distribution methods. Our findings suggest tha...