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Start Over Topic differential equations Topic mathematical analysis Topic mathematical functions Publisher daaam international
2 results

1. COMPLEXITY CLASSES FOR MULTI-VARIABLE COMPLEXITY FUNCTIONS.

Author

MOGOS, Andrei - Horia and FLOREA, Adina Magda

Subjects
*ALGORITHMS, *MATHEMATICAL functions, *COMPUTATIONAL complexity, *MATHEMATICAL variables, *MATHEMATICS, *DIFFERENTIAL equations, *MATHEMATICAL analysis, *CALCULUS, *EQUATIONS
Abstract

The complexity of an algorithm is usually expressed using complexity functions and complexity classes, in this paper we present a method to reduce the work with multi-variable complexity functions to the work with one-variable complexity functions. We define five complexity classes for multi-variable complexity functions and then we prove some properties for these classes. [ABSTRACT FROM AUTHOR]

Published
2009

2. NUMERICAL ANALISYS OF DISCONTINUITIES IN BEAM STRUCTURES.

Author

STAN, Florina, GROZEA, Marius - Alexandru, DOBRESCU, Corina, HADAR, Anton, and CONSTANTINESCU, Ioan

Subjects
*NUMERICAL analysis, *CONFIGURATION space, *FINITE element method, *MATHEMATICAL analysis, *CAD/CAM systems, *CALCULUS, *INFINITESIMAL geometry, *MATHEMATICAL functions, *DIFFERENTIAL equations
Abstract

This paper presents specific aspects of the beam structures junctions nonlinear calculus. The substructuring method applied with the help of some high-performance numerical methods is considered the only way to study some high level stress zones. The working methodology has an original character and may be generalized to all structures with geometrical and material discontinuities. The stress state configurations obtained using the finite element method allow a correct evaluation of the safety coefficients and reliability of the analyzed structure. [ABSTRACT FROM AUTHOR]

Published
2009