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131.
It is shown that the existence of an N?N bound state with a mass of approximately 1870 MeV and width 10 MeV follows from analysis of the experimental data on the momentum distribution of recoil protons in the annihilation process p?d→p s5π. 相似文献
132.
A. Shapiro 《Journal of Optimization Theory and Applications》2006,128(1):221-243
In this paper, we discuss here-and-now type stochastic programs with equilibrium constraints. We give a general formulation
of such problems and study their basic properties such as measurability and continuity of the corresponding integrand functions.
We discuss also the consistency and rate of convergence of sample average approximations of such stochastic problems 相似文献
133.
B.J. Garrison N. Winograd D. Lo T.A. Tombrello M.H. Shapiro D.E. Harrison Jr. 《Surface science》1987,180(2-3):L129-L133
We propose that the energy cost to remove one atom from the surface during ion bombard- ment is larger than the surface binding energy or bulk heat of sublimation. It is this value of the energy cost that is appropriate for use in analytic models of the sputtering process. 相似文献
134.
We investigate the quality of solutions obtained from sample-average approximations to two-stage stochastic linear programs
with recourse. We use a recently developed software tool executing on a computational grid to solve many large instances of
these problems, allowing us to obtain high-quality solutions and to verify optimality and near-optimality of the computed
solutions in various ways.
Research supported by the Mathematical, Information, and Computational Sciences Division subprogram of the Office of Advanced
Scientific Computing Research, U.S. Department of Energy, under Contract W-31-109-Eng-38, and by the National Science Foundation
under Grant 9726385.
Research supported by the Mathematical, Information, and Computational Sciences Division subprogram of the Office of Advanced
Scientific Computing Research, U.S. Department of Energy, under Contract W-31-109-Eng-38, and by the National Science Foundation
under Grant DMS-0073770.
Research supported by the Mathematical, Information, and Computational Sciences Division subprogram of the Office of Advanced
Scientific Computing Research, U.S. Department of Energy, under Contract W-31-109-Eng-38, and by the National Science Foundation
under Grants 9726385 and 0082065. 相似文献
135.
F. Bass V. D. Freilikher B. Ya. Shapiro M. Shvartser 《Physica C: Superconductivity and its Applications》1996,260(3-4):231-241
Bean-Livingston barrier for a single Abrikosov vortex interacting with the rough surface is calculated as a function of the random characteristics of the surface roughness. It has been shown that even a respectively smooth surface roughness results in an essential decrease of the Bean-Livingston surface barrier. 相似文献
136.
We analyze an extension of the classical multi-period, single-item, linear cost inventory problem where the objective function is a coherent risk measure. Properties of coherent risk measures allow us to offer a unifying treatment of risk averse and min–max type formulations. For the single period newsvendor problem, we show that the structure of the optimal solution of the risk averse model is similar to that of the classical expected value problem. For a finite horizon dynamic inventory model, we show that, again, the optimal policy has a similar structure as that of the expected value problem. This result carries over even to the case when there is a fixed ordering cost. We also analyze monotonicity properties of the optimal order quantity with respect to the degree of risk aversion for certain risk measures. 相似文献
137.
138.
A. Kovarski T. Yushkina V. Kasparov A. Shapiro A. Tikhonov 《Colloid and polymer science》2003,281(4):308-318
139.
Alexander Shapiro 《Mathematical Programming》2006,107(1-2):91-96
We show that for even quasi-concave objective functions the worst-case distribution, with respect to a family of unimodal
distributions, of a stochastic programming problem is a uniform distribution. This extends the so-called ``Uniformity Principle'
of Barmish and Lagoa (1997) where the objective function is the indicator function of a convex symmetric set. 相似文献
140.
Boris Shapiro 《Physica A》1993,200(1-4):498-503
At low temperatures the orbital magnetic susceptibility χ of a finite size metallic sample can be much larger than the macroscopic Landau value χ0. The value of χ depends on sample size and shape, it can have either sign and it is sensitive to the position of the Fermi level. Some old and recent work on the phenomenon of large orbital magnetism is reviewed. 相似文献