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Visualization of PLC/BPL communication in the map
Klíma, Petr ; Rusz, Martin (referee) ; Benešl, Lukáš (advisor)
The bachelor thesis deals with the implementation of an application for visualization of the PLC communication network (PowerLine Communication). The principle, advantages, disadvantages and variants of this type of communication are analyzed. Attention is also given to the use of this technology, especially in the construction of smart grids and for the diagnosis of cable lines, which is also used by the application. The thesis also deals with the problem of predicting the state of cable lines and the parameters on which this prediction is based. Some current possibilities of map visualization are also discussed and the application itself is created using the javascript library Leaflet and static map tiles. The application is focused on BPL technology, but it allows storing data on any connection made by any transmission technology. It allows displaying information about the network and displaying network elements on a map, filtering BPL connections according to the state of the cabling, configuring individual parts of the topology and the ability to create and read database backups. The behavior of the application can be easily modified by editing the file with constants.
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Torque-speed characteristic optimization of an induction machine using machine learning
Bártková, Tereza ; Klíma, Petr (referee) ; Bílek, Vladimír (advisor)
Purpose of this work is optimization of given electrical machine based on combination of selected methods. The first chapter introduces machine learning in general. Its fundamental approaches and typical problems are analyzed together with some of the actual algorithms. The topic of optimization is introduced in the following chapter - its purpose and explanation of its concepts. The limitations we face while optimizing designs are demonstrated on two basic methods. Several popular algorithms are described, that could possibly be used in the context of electrical machines' optimization. One of the goals is reached in the third chapter - the choice of machine learning method in combination with optimization algorithm. The fourth chapter deals with matters of creating the induction machine geometry and subsequently its electromagnetic model for the following analysis. Details of geometric dimensions and electromagnetic parameters are introduced as well as calculation of end winding leakage inductance, one phase winding resistance and resistance and inductance between bars. There is also a brief description of the tools used for creating the model. The next chapter presents results of the electromagnetic analysis of the model. The process of creation on surrogate models of a given machine is described in the sixth chapter. It comprises the sensitivity analysis, creation of the initial training data and active learning. Next chapter deals with the optimization of the given machine utilizing surrogate models and selected optimization algorithms. The last chapter compares original machines' characteristics to those of optimized geometries.
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Heating options of a house
Klíma, Petr ; Elbl, Patrik (referee) ; Toman, Filip (advisor)
The bachalor‘s thesis, dealing with the possibilities of heating a family house is devided into three parts. The first part presents heat sources for houses and fuels that are used for heating. In the second part, the heat losses of already specifically selected house and the annual energy demand for heating are calculated. The third part deals with the economic evaluation of specific heat sources.
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High-speed induction machine
Cajzl, Jakub ; Pribulla, Daniel (referee) ; Klíma, Petr (advisor)
This thesis deals with the electromagnetic design of high-speed asynchronous machine. The introduction summarizes basic information that deals with design aspects of highspeed machines and choice of materials. The next part of this thesis is focused on the comparison of basic rotor topologies for high-speed asynchronous machines. The main part of this thesis is devoted to the electromagnetic design of high-speed machine and parametric analysis. In this part, the results of machine basic dimensions and parametric analysis are presented.
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Thermal analysis of servomotor
Přibyl, Daniel ; Duroň, Jiří (referee) ; Klíma, Petr (advisor)
This thesis deals with the design of the thermal model of servomotor in program Motor-CAD and using it for analyze of servomotor. In the beginning is a short familiarization about its parts, especially important for the thermal model. Further are described principles of heat exchange. There is a chapter, which is dedicated to the program support of the Motor-CAD. Thermal model and electromagnetic model inputs are tuned according to the measured data. Then a way of active cooling is designed and based of it the model in program is edited. Using the model is found the points of load of the motor for maximum allowable temperature with water cooling. In the conclusion is a valorization of benefit of water cooling for the servomotor.
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Architecture and design of department stores by Růžena Žertová
Borůvková, Zlata ; Novotná, Eva (advisor) ; Klíma, Petr (referee)
Design of Department Stores by Růžena Žertová. The objective of the bachelor thesis is to introduce buildings of department stores designed by Růžena Žertová, constructed in the 1960s to the 1970s. The projects by this architect markedly surpassed the standard of contemporary food-processing-industry buildings. This thesis focuses on her work in Košice, Ústí n. L., and Pardubice.
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Mechanizmus transportu cytokininů přes buněčnou membránu a jejich metabolizmus v buňkách tabákové suspenzní kultury BY-2
Klíma, Petr ; Zažímalová, Eva (advisor) ; Galuszka, Petr (referee) ; Procházka, Stanislav (referee)
MECHANISM OF CYTOKININ TRANSPORT ACROSS PLASMA MEMBRANE AND THEIR METABOLISM IN TOBACCO BY-2 CULTURED CELLS Mgr. Petr Klíma / Abstract of Ph.D. Thesis / Prague 2011 Cytokinins (CKs) are plant hormones that play a major role in a number of developmental processes in plants. Those include promotion of cell division, active growth and differentiation, and maintenance of sink-source relationships, as well as control of environmental stress responses. Native CKs are low-molecular derivatives of adenine which seem to act either as paracrine or as long-distance signals. Due to their numerous physiological effects, plants have to precisely control the occurrence of bioactive CK molecules on the levels of the whole plant, its organs, tissues as well as single cells. To achieve this, a concerted action of metabolism and transport processes is required. Studies of the kinetics of CK translocation across plasma membrane in BY-2 suspension-grown tobacco cells suggested the existence of energy-dependent, partially selective transport routes for CK bases and CK ribosides. HPLC analysis of the metabolites of accumulated CKs pointed at their fast degradation or metabolic conversion into physiologically inactive forms. The prevalent ways of inactivation were the degradation to adenine and phosphorylation or phosphoribosyl...
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Effectors of RAB GTPases and their role in plant secretion
Růžičková, Martina ; Hála, Michal (advisor) ; Motyka, Václav (referee) ; Klíma, Petr (referee)
Rab GTPases are small signaling molecules that play an important role in vesicle trafficking in eukaryotic cells. Correct signaling through small GTPases allows orchestration of vesicle transport among cellular organelles and also to the cell wall providing cell wall material for cell growth and elongation. Engagement of Rab GTPases in the regulation of endomembrane trafficking is one of the evolutionary conserved aspects of secretion regulation. The network of Rab GTPases interaction includes also various downstream effectors. One of them is the exocyst complex involved in vesicle docking at the plasma membrane. It is a complex composed of eight different subunits (Sec3, Sec5, Sec6, Sec8, Sec10, Sec15, Exo70 and Exo84). Exocyst was discovered as Sec4p Rab GTPase effector in yeast and also data from animal models describe the Sec15 exocyst subunit as the Rab-interacting partner, but data from plants are missing. On the other hand, numerous studies identified exocyst role in tip growth of pollen tube and root hairs, seed coat formation, cell plate and cell wall formation, hypocotyl elongation, and importantly also PIN auxin efflux carriers recycling and polar auxin transport. There are two paralogues of SEC15 in the Arabidopsis genome, SEC15a and SEC15b, the previous one already shown to be...
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The role of ARPC2 in plant cells
Šlajcherová, Kateřina ; Schwarzerová, Kateřina (advisor) ; Klíma, Petr (referee)
ARPC2 protein localization in a plant cell Kateřina Šlajcherová 1 Abstract Actin cytoskeleton is an ubiquitous structure which plays numerous irreplacable roles. Actin nucleation is, beside formins, performed by ARP2/3 complex (actin-related protein), comprising of seven subunits (ARP2, 3, C1-C5) and activated by protein SCAR/WAVE complex. ARP2/3 complex is attached to the membrane and branches existing microfilaments, apart from nucleating them de novo. ARP2/3 mutants in most organisms show severe defects. However, plant mutants exhibit only mild phenotype, for example, Arabidopsis thaliana ARPC2 mutant (dis2-1) has deformed trichomes and leaf epidermal cells, but its viability is not impaired. The aim of the thesis is to map ARPC2 localization within the cell and broaden our understanding of ARP2/3 complex role in plant cell morphogenesis. Tobacco ARPC2 (NtArpC2) subunit was visualized in Arabidopsis plants, using the GFP fusion protein as well as imunofluorescence and anti-ARPC2 antibody. Experiments were undertaken to collocalize the subunit with actin and microtubular cytoskeleton, with mitochondrions, endosomes and other membrane organelles. The specimens were observed in confocal and TIRF microscope. The GFP-NtARPC2 protein shows as motile dots; their movement, but not their existence, is dependent...
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