
The numerical analysis of nonlinear mathematical models on graphs
Natalija Tumanova
Summary of doctoral dissertation
Summaries of doctoral dissertations are not being sold
Edvardas Metlevskis
Doctoral dissertation
Dissertations are not being sold
The dissertation investigates the issues of influence of additional shields on frequency characteristics of meander slow-wave system. The main objects of research include planar meander slow-wave systems with additional shields, their models and the methods of analysis and synthesis. The primary purpose of this dissertation is to investigate the planar meander slow-wave systems with additional shields by creating new models and their investigation techniques which allow to evaluate the effects on the edges and ends of slow-wave systems and create the technique for parametric synthesis of such slow-wave systems.
The paper approaches a few major tasks such as: creation of technique for modelling of 3D electric field distribution in meander slow-wave systems; creation of models of planar meander slow-wave system using high-frequency EM software; investigation of influence of effects on the edges and ends of meander slow-wave system with additional shields on their dispersive properties and input impedance; creation of technique for parametric synthesis of meander slow-wave system with additional shields.
The dissertation consists of four parts including Introduction, 4 chapters, Conclusions, References and Summary in English.
The introduction reveals the investigated problem, importance of the thesis and the object of research and describes the purpose and tasks of the paper, research methodology, scientific novelty, the practical significance of results examined in the paper and defended statements. The introduction ends in presenting the author’s presentations in conferences on the subject of the defended dissertation and defining the structure of the dissertation.
Chapter 1 revises used literature. At the end of the chapter, conclusions are drawn and the tasks for the dissertation are reconsidered.
Chapter 2 describes proposed new computer models of meander slow-wave system with additional shields, which are created using Sonnet® software. Moment method based technique for modelling of 3D electric field distribution in meander slow-wave system is also described.
Chapter 3 describes the results of investigation of frequency characteristics of meander slow-wave system with additional shields and modeling of 3D electric field distribution.
In Chapter 4 the technique for parametric synthesis of meander slow-wave system with additional shields grounded at both edges is proposed.
5 articles focusing on the subject of the discussed dissertation are published including three articles in the Thomson Reuters Web of Knowledge register. 9 presentations on the subject have been given in conferences at national and international level.
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Natalija Tumanova
Summary of doctoral dissertation
Summaries of doctoral dissertations are not being sold
Indrė Kučinskaitė-Kodzė
Summary of doctoral dissertation
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Laura Žiliūtė
Doctoral dissertation
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Indrė Lapinskaitė
Summary of doctoral dissertation
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Šarūnas Bruzgė
Doctoral dissertation
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Vilma Zubinaitė
Summary of doctoral dissertation
Summaries of doctoral dissertations are not being sold
Jūratė Venckauskaitė
Doctoral dissertation
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Raimondas Pomarnacki
Doctoral dissertation
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Jolanta Vėjelienė
Summary of doctoral dissertation
Summaries of doctoral dissertations are not being sold
Indrė Slapikaitė
Doctoral dissertation
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Audrius Krukonis
Summary of doctoral dissertation
Summaries of doctoral dissertations are not being sold
Deividas Sabaitis
Summary of doctoral dissertation
Summaries of doctoral dissertations are not being sold
Dmitrijus Balčiūnas
Doctoral dissertation
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Darius Vainorius
Doctoral dissertation
Laima Kaušpadienė
Doctoral dissertation
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Artiom Volkov
Doctoral dissertation
Dissertations are not being sold
Edvardas Metlevskis
Doctoral dissertation
Dissertations are not being sold