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Adjustable source supplied and controlled via USB
Pavlíček, Petr ; Daněček, Vít (referee) ; Zeman, Václav (advisor)
Master’s thesis deals with design and realization of power supply, which is supplied and controlled via USB bus. In theoretical part there are described principles of USB communication drivers which ensures this communication, there are described principles of linear voltage regulators and basic types of DC/DC converters. Mentioned is also PID regulator theory. Practical part aims for design of suitable DC/DC converter topology and creating algorithms for driving this converter. Next there is created PC program which drives power supply and there are also accomplished basic power supply measurements. The result of this thesis is functional power supply supplemented with PCB.
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Measurement of relaxation constants, using MR techniques
Pavlíček, Petr ; Chmelař, Milan (referee) ; Gescheidtová, Eva (advisor)
Bachelor‘s thesis deals with measuring methods of relaxation times T1 and T2 using nuclear magnetic resonance (NMR) and experimental measuring of conductive gels samples. In the theoretical part an analysis of the behavior of atoms placed in the magnetic field, basic principles of NMR functionality and commonly used measuring sequences for relaxation times detection are given. The experimental part is oriented to measuring both relaxation times of conductive gels samples, which were examined in terms of use in lithium-polymer (Li-Pol) accumulators. Relaxation times T1 were measured using Inversion Recovery (IR) method and relaxation time T2 using Hahn Echo and halfwidth methods.
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Measurement of relaxation constants, using MR techniques
Pavlíček, Petr ; Chmelař, Milan (referee) ; Gescheidtová, Eva (advisor)
Bachelor‘s thesis deals with measuring methods of relaxation times T1 and T2 using nuclear magnetic resonance (NMR) and experimental measuring of conductive gels samples. In the theoretical part an analysis of the behavior of atoms placed in the magnetic field, basic principles of NMR functionality and commonly used measuring sequences for relaxation times detection are given. The experimental part is oriented to measuring both relaxation times of conductive gels samples, which were examined in terms of use in lithium-polymer (Li-Pol) accumulators. Relaxation times T1 were measured using Inversion Recovery (IR) method and relaxation time T2 using Hahn Echo and halfwidth methods.
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Adjustable source supplied and controlled via USB
Pavlíček, Petr ; Daněček, Vít (referee) ; Zeman, Václav (advisor)
Master’s thesis deals with design and realization of power supply, which is supplied and controlled via USB bus. In theoretical part there are described principles of USB communication drivers which ensures this communication, there are described principles of linear voltage regulators and basic types of DC/DC converters. Mentioned is also PID regulator theory. Practical part aims for design of suitable DC/DC converter topology and creating algorithms for driving this converter. Next there is created PC program which drives power supply and there are also accomplished basic power supply measurements. The result of this thesis is functional power supply supplemented with PCB.
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Management of urban forests
PAVLÍČEK, Petr
The main target of this Bachelor thesis was to evaluate a financial situation of SML Jihlava by using financial ratios analysis which is containing profitability ratios, asset management, debt management and liquidity ratios. The study is divided into theoretical and practical parts. The theoretical part describes specifics, financing and financial analysis opportunities of urban forests. In the practical part financial analysis for the selected company was performed. Followed by average values of profit and loss account from five chosen competitive enterprises. The financial analysis was then completed. The next part of the study contains comparison of the results. SML significantly overperformes competition, especially in profitability when completion of comparison of calculated indicators is made. In the end of thesis financial situation of company is evaluated based on obtained data.
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