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Poincaré-Bendixsonov izrek : delo diplomskega seminarja
ID Zupančič, Karmen (Author), ID Kuzman, Uroš (Mentor) More about this mentor... This link opens in a new window

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Abstract
V diplomski nalogi obravnavam avtonomne dinamične sisteme, ki so v ravnini podani s sistemom dveh diferencialnih enačb. Osrednji cilj diplome je dokaz in uporaba Poincaré-Bendixsonovega izreka. Omenjeni izrek opredeljuje možna limitna vedenja omejenih tokovnic, zato je zelo uporaben pri napovedovanju obnašanja tovrstnih sistemov pri velikih časih. V tem delu bomo izrek aplicirali na ekonomskem modelu, ki vključuje strukturne spremembe. Do slednjih v ekonomiji pride zaradi različnih dejavnikov, kot so na primer spremembe v razvoju gospodarstva ali pomanjkanje sredstev. V nalogi bomo pokazali, kako lahko vse te dejavnike ponazorimo z dinamičnim sistemom, katerega obnašanje je po Poincaré-Bendixsonovem izreku predvidljivo. Natančneje, izpeljali in obravnavali bomo Kaldorjev model, ter ga razširili na področje slovenskega zdravstva.

Language:Slovenian
Keywords:dinamični sistemi, limitna množica, modeliranje, fazni portret, Poincaré-Bendixsonov izrek, sistemi nelinearnih diferencialnih enačb, tokovnice
Work type:Bachelor thesis/paper
Organization:FMF - Faculty of Mathematics and Physics
Year:2020
PID:20.500.12556/RUL-122255 This link opens in a new window
UDC:517.93
COBISS.SI-ID:58375939 This link opens in a new window
Publication date in RUL:02.12.2020
Views:857
Downloads:140
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Secondary language

Language:English
Title:Poincaré-Bendixson theorem
Abstract:
In my diploma thesis I deal with autonomous dynamical systems in a plane given by a system of two differential equations. The central goal of the diploma is the proof and application of the Poincare-Bendixson theorem. The mentioned theorem defines the possible limit behaviors of bounded trajectories, so it is very useful in predicting the behavior of these systems at large times. In the paper, we will apply the theorem to the economic model, which includes structural changes. These occur due to various factors in the economy, such as changes in economic development or lack of resources. We will show how all of these factors can be illustrated by a dynamic system whose behavior is predictable according to Poincare-Bendixson's theorem. More precisely, we will implement and discuss the Kaldor model, and expand it to the field of Slovenian healthcare.

Keywords:dynamical systems, limit cycle, modelling, phase portrait, Poincaré-Bendixson theorem, systems of nonlinear differential equations, trajectories

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