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91.
We analyze the origin of quantum randomness within the framework of a completely deterministic theory of particle motion—Bohmian mechanics. We show that a universe governed by this mechanics evolves in such a way as to give rise to the appearance of randomness, with empirical distributions in agreement with the predictions of the quantum formalism. Crucial ingredients in our analysis are the concept of the effective wave function of a subsystem and that of a random system. The latter is a notion of interest in its own right and is relevant to any discussion of the role of probability in a deterministic universe.Research supported in part by NSF Grant DMS-9105661. 相似文献
92.
R. Seydel 《Applied mathematics and computation》1981,9(4):257-271
The computation of periodic orbits of autonomous ordinary differential equations is considered. A new method especially suited for computing limit cycles that bifurcate from stationary solutions is established. This novel approach is very easy to implement, the method requiring the programming of the right-hand side only. Another topic of this paper is the demonstration of how a direct method should be applied in the computation of Hopf bifurcation points. These methods solve boundary-value problems by means of standard software only. The methods are tested on four examples arising in different application areas including chemistry and biology. 相似文献
93.
A modified method for producing thin homogeneous metallic surface layers by wire explosions in vacuum is described. By this
method, which takes advantage of electrical suction fields, films of good homogeneity and surface quality can be obtained.
In this way materials of high boiling temperature can be evaporated and coatings of inner faces of hollow bodies are attainable,
too. 相似文献
94.
Detlef Laugwitz 《Archiv der Mathematik》1955,6(2):128-131
Ohne Zusammenfassung 相似文献
95.
96.
Permethylcyclohexane 2 has been synthesized and investigated by dynamic NMR spectroscopy. An unexpectedly low barrier (ΔG3333 = 70.0 kJ/mol) of its chair-to-chair interconversion was found. 相似文献
97.
98.
H. J. Diekhoff P. Lory H. J. Oberle H. J. Pesch P. Rentrop R. Seydel 《Numerische Mathematik》1976,27(4):449-469
Summary The numerical solution of two-point boundary value problems and problems of optimal control by shooting techniques requires integration routines. By solving 15 real-life problems four well-known intergrators are compared relative to reliability, fastness and precision. Hints are given, which routines could be used for a problem. 相似文献
99.
100.