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1.
The error of solution of Cauchy problems for systems of ordinary differential equations is estimated in the case where the
input data are approximate. It is shown how to prepare a program for computing the right-hand sides of the system automatically
and simultaneously. Diagrams are presented to illustrate the efficiency of parallelization.
__________
Translated from Kibernetika i Sistemnyi Analiz, No. 2, pp. 175–182, March–April 2007. 相似文献
2.
The limiting level of sheet glass hardening is presented based on three classification strength criteria and is equal to about 500 MPa. 相似文献
3.
4.
Fractures of group II (according to the classification given in Part 1) are described in detail. The deviations of the structure of a fracture from the groups of fiber and crystalline fractures are explained by the chemical micro- and macroinhomogeneity of the metal. The characteristics of fractures, the causes of their formation, the methods for fighting and eliminating them, and the interrelation with the mechanical properties of the steel are described. Every kind of fracture is illustrated. 相似文献
5.
Metal Science and Heat Treatment - 相似文献
6.
The co-effects of two glass-formers in the TeO2-P2O5 system are studied on the basis of neutron diffraction data. The curves for the radial distribution function (RDF) obtained show a high extent of destruction of the short-range order in the tellurite matrix, while the basic co-ordination PO4 polyhedron remains unchanged. The co-ordination number (cn) of the Te atom changes from 4 to 3+1 and marked tendency towards elongation of the Te-O distances over 2.3 Å is observed. The considerably higher stability of the PO4 polyhedra and their strong influence on the TeO4 polyhedra is established. The observed smearing effect of the Te-Te, Te-second O and O-second O distances in the range of 3.8 to 3.9 Å in other tellurite glasses is also characteristic of this system. A structural interpretation of the liquid-liquid immiscibility on the short-range order level in the system is given. A critical composition with 26±5% of the second glass-former is established, above which concentration a stable immiscibility in the tellurite systems is observed. An attempt is made to construct two adequate structural models (microhomogeneous and microheterogeneous) for the short-range order in the glasses studied. 相似文献
7.
The influence of the mechanical properties of carbon steel on the hardening of rod blanks in the course of upsetting is studied
experimentally. 相似文献
8.
Metallurgist - A method for calculating the thickness of thermal-spray aluminum coating used to effectively protect low-alloy steel during heating for rolling is developed. The method calculates... 相似文献
9.
10.
Gerasimova L. G. Shchukina E. S. Maslova M. V. Nikolaev A. I. Pleshakov Yu. V. 《Theoretical Foundations of Chemical Engineering》2018,52(5):903-908
Theoretical Foundations of Chemical Engineering - An important state in the technology of a compositional silicon-containing titanium phosphate adsorbent is studied. The conditions of washing of... 相似文献