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991.
992.
We study a CUSUM–type monitoring scheme designed to sequentially detect changes in the regression parameter of an underlying
linear model. The test statistic used is based on recursive residuals. Main aim of this paper is to derive the limiting extreme
value distribution under the null hypothesis of structural stability. The model assumptions are flexible enough to include
rather general classes of error sequences such as augmented GARCH(1,1) processes. The result is underlined by an illustrative
simulation study.
Research partially supported by NSF grants DMS–0604670 and DMS–065242. 相似文献
993.
994.
Asian options are hard to price both analytically and numerically. Even though they have been the focus of much attention in recent years, there is no single technique which is widely accepted to price Asian options for all choices of market parameters. For hedging purposes, the estimation of the price sensitivities is often as important as the evaluation of the prices themselves. This paper provides a survey of current methods for pricing Asian options and computing their sensitivities to the key input parameters. The methods discussed include: Monte Carlo simulation, the finite difference approach and various quasi analytical approaches and approximations. We discuss practical numerical issues that arise in implementing these methods. The paper compares the accuracy and efficiency of the different approaches and offers some general conclusions. 相似文献
995.
Alexander L. Weis Felix Frolow Rosita Vishkautsan 《Journal of heterocyclic chemistry》1986,23(3):705-710
Optically active condensed derivatives of hydroxytetrahydropyrimidines and dihydropyrimidines were prepared by condensation of (+)pulegone with amidines and guanidine. The structure, the possible mechanism of formation of these compounds, and the existence of amidinic tautomerism are discussed on the basis of the measured spectral data and x-ray diffraction analysis. 相似文献
996.
997.
998.
999.
1000.
Alexander Dynin 《Integral Equations and Operator Theory》1987,10(4):554-576
The C*-algebras generated by Wiener-Hopf Operators on tangible closed cones are solvable: they have finite composition series of ideals with subquotients which are homogeneous C*-algebras with continuous trace. In particular this refers to cones with piece-wise smooth boundary and to cones which are finite sets of orbits under some linear action. 相似文献