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Ecology of the Reed Bunting Emberiza schoeniclus in fishpond habitats
Musilová, Zuzana ; Musil, Petr (advisor) ; Procházka, Petr (referee) ; Krištín, Anton (referee)
10 SUMMARY Musilová, Z. & Musil, P. Nest site selection in the Reed Bunting Emberiza schoeniclus in fishpond habitats. submitted Nest site selection was analysed using variation in timing of breeding, nesting success and age of females in the Reed Bunting in fishpond habitats in mosaic Central European landscape. An example of habitat generalist using variable types of littoral vegetation is the Reed Bunting Emberiza schoeniclus, which occupies a wide scale of wetlands habitats (Blümel 1989, Cramp & Perrins 1994, Glutz von Blotzheim & Bauer 1997, Báldi & Kisbenedek 1999). Nevertheless, habitats generalists are supposed to be capable of not only occupying a wider range of habitats, but also exploring a wider range of resources (Brown 1984) including nest sites. We predicted that individuals with higher fitness are able to occupy optimal nest sites (Benett & Owens 2005). Survival and probability of recruitment are usually higher for early-hatched fledglings than for those hatched later (Lack 1968, Perrins 1970, Benett & Owens 2005). Reproductive success of older birds is generally higher than of the young ones (Curio 1983, Geslin et al. 2004). We can identify individual fitness using the following parameters: timing of breeding, nesting success and age of individuals. We evaluate habitat preference and...
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Apartment building
Procházka, Petr ; Hrabovský, Kristián (referee) ; Brukner, Bohuslav (advisor)
The subject of the bachelor's thesis is the preparation of project documentation for the construction of an apartment building. The building is located on plot no. 5184/6 in the cadastral territory of Vracov. It is a detached house with four above-ground stories and one underground story. The floor plan of the apartment building is rectangular. Operationally, the building is divided into 7 residential units with layouts of 1+kk, 2+kk, and 3+1. Collective garages, storage cubicles, and technical facilities are located on the underground floor. The house is built on strip foundations made of plain concrete. The load-bearing structure is designed as a wall system made of ceramic building blocks. The load-bearing structure in the underground is supplemented with peripheral monolithic reinforced concrete walls, supporting beams, and a column. The horizontal load-bearing structures consist of monolithic reinforced concrete slabs. The roof structure is designed as a single-layer flat roof. The house is sheathed with insulation boards made of mineral cotton wool.
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Design inverter using semiconductor on based SiC
Kharchenko, Vadym ; Procházka, Petr (referee) ; Kuzdas, Jan (advisor)
This work builds on a semester project 2. from the winter semester of this academic year. The aim of this thesis is the design of converter using semiconductor components based on SiC technology. This converter is used in the construction of quick charger for electric vehicles. The design of this converter must be based on the requirements for compliance voltage safety. It describes the design of power components used in the construction of this facility, the determination of their losses and determines the overall efficiency of the converter. There is also proposed mathematical model of high-frequency transformer and made his simulation in Matlab-Simulink.
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Car-battery charger
Kadlec, Josef ; Procházka, Petr (referee) ; Červinka, Dalibor (advisor)
This bachelor’s thesis is considered by projection and construction of the car battery charger with switching source. One-pulsed conducting changer is base of this charger. The charger is intended for accumulators of nominate voltage 6 and 12V. Accumulators are charged by method of constant voltage with current limitation of 0.5A, 5A, 20A and 50A. Value 50A has reason during stating of car for example in winter, because the charger helps to battery. The device is equipped with additional protection, which protects the charger and also the accumulator and the supply network. Three pilot lights are the next equipment of the device.
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Electric drive of lift model with EC motor
Kutrucz, Tomáš ; Procházka, Petr (referee) ; Koláčný, Josef (advisor)
This diploma thesis describes a simulator of home elevator driven by an EC engine (external combustion engine). The introductory chapter of the thesis deals with the history of elevators. It also contains the description of EC engines, the description of the construction of the simulator and of the mechanical, electrical, and software adjustments carried out as based on the thesis. The main part of the work concentrates on the description of the changes of the drive algorithms, the production of the 3D simulator and the animation in the background of 3D Solid Works. Moreover, it also deals with the experimental performance measurement based on the loading of the stimulator drive.
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Power supply module for servo-drive
Kudláček, Pavel ; Procházka, Petr (referee) ; Červinka, Dalibor (advisor)
The aim of the diploma thesis is to theoretically design and to put the mains power supply module for two-axis servo amplifier TZG 560 with the total power 28kW for the company TG Drives into practice. The analytical design of the power part with the braking circuit, the calculation of power components’ heat balance, EMI filter design and realization of measuring, controlling and indication circuits are described in the thesis. In addition, the mechanical device construction, structure of the controlling program and the results obtained in the verification process of the module functionality are presented.
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Utilization of MERS in heavy current engineering
Vetiška, Vojtěch ; Procházka, Petr (referee) ; Huzlík, Rostislav (advisor)
This graduation thesis is aimed in usage of MERS circuits in high-current electroengineering. The MERS circuit is a serial variable capacitor which capacity is possible to change by the help of switching of semiconductor components. On beginning of the thesis I shall acquaint you with usage of the MERS circuit. It will be sketched out their basic circuitry, the operating method, possibilities of transistors switching and calculation of the capacity capacitors for particular controlling method. On the prepared device we shall accomplish the predefined measurement. Furthermore we shall create the simulation by means of the Matlab programme. In the end we shall compare the results of the simulation with measured values.
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