Temat: Systems of linear equations - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Solving Systems of Linear Equations under Conditions of Uncertainty on the Example of the Leontief Model
Autorzy:: Kacprzak, Dariusz
Powiązania:: https://bibliotekanauki.pl/articles/1356874.pdf
Data publikacji:: 2019-09-11
Wydawca:: Uniwersytet Warszawski. Wydział Nauk Ekonomicznych
Tematy:: Systems of linear equations
interval arithmetic
fuzzy numbers
ordered fuzzy numbers
Leontief model
Opis:: The paper presents various methods of solving systems of linear equations under conditions of uncertainty. In a situation when the parameters of such systems cannot be precisely determined with real numbers, they can be represented by interval numbers, fuzzy numbers or ordered fuzzy numbers. Solutions of systems of linear equations with such representations of parameters are shown in the example of Leontief input-output model. It has also been shown that when ordered fuzzy numbers are applied, their additional feature – orientation – can broaden and deepen economic analysis.
Źródło:: Central European Economic Journal; 2018, 5, 52; 244 - 259
2543-6821
Pojawia się w:: Central European Economic Journal
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: A Comparison Between Some Approximate and Numerical Solution of Dynamical Eulerliouville Equation for Rigid Non-Symetrical Free Body with Fast Oscilating Interaction in Gravitational Field
Autorzy:: Kaźmierczak, A.
Powiązania:: https://bibliotekanauki.pl/articles/108726.pdf
Data publikacji:: 2011
Wydawca:: Społeczna Akademia Nauk w Łodzi
Tematy:: rotation of asteroids
gravitational force moment
Euler-Liouville equations
numerical computing
systems of non-linear differential equations
Opis:: Tumbling NPA (non-principal axis) asteroids are discovered by the investigation of photometric data and asteroids lightcurves. A particular solution of Euler-Liouville equation was found for an elongated symmetrical body. It may be useful for investigations of dual periods of rotational motion NPA tumbling asteroids. Physical formula of the gravity force moment acting at a rigid body was derived. A numerical solution of the same accurate equation was found and compared with the analytical ones. A stable region of the numerical solution was investigated and numerical algorithms for fast variables were examined. Very long time period of the numerical solution of Euler- Liouville equation for the body in gravitational field was found.
Źródło:: Journal of Applied Computer Science Methods; 2011, 3 No. 1; 31-46
1689-9636
Pojawia się w:: Journal of Applied Computer Science Methods
Dostawca treści:: Biblioteka Nauki

Artykuł

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