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The Proposal for Improvement of Supply Management
Krejčí, Petra ; Pokorný, Michal (referee) ; Mikulec, Luděk (advisor)
This thesis focuses on the study and optimization of inventory management in company XXX Ltd. The theoretical part is dedicated to characteristic of basic concepts related to inventory management, their classification, related costs and inventory management methods. Practical part is focused on the analysis of the current state in the company, on providing, storage and controlling of inventory. This analysis reveals deficiencies for which several solutions will be suggested. They will lead to more effective inventory management in the company.
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Dielectric waveguides modeling
Šikl, Tomáš ; Lukeš, Zbyněk (referee) ; Pokorný, Michal (advisor)
Bachelor’s thesis are about dielectric waveguides, which are a natural alternative to metal waveguides. These waveguides are largely use in optoelectronic technology. Dielectric waveguide are creates in COMSOL Multiphysics, there are make overview and comparison of parameters of dielectric waveguide compared to conventional metal waveguides. My task is to create a comprehensive overview of simulation most frequently used adjustments to the dielectric waveguide, that are use in the production and there are compares the most important parameters of the simulated model and real waveguide.
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Patch antenna with switchable polarization
Havelka, Michal ; Pokorný, Michal (referee) ; Raida, Zbyněk (advisor)
The bachelor’s thesis deals with the analysis of basic planar antennas, the design methods, optimization and simulation in ANSOFT Designer. Attention is turned to the design of aperture coupled microstrip antennas. First, the antenna with a simple slot is designed. Second, the design of the ring slot coupled microstrip antenna is described. Both the antennas are designed for the operation frequency 2,45 GHz. The second part is devoted to the antenna with switchable polarization. Using three PIN diodes powered by lithium battery of 3-V, the linear polarization (both the horizontal one and the vertical one) and the circular polarization (both the right-hand one and the left-hand one) can be switched. The results were verified by experimental verification.
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Harvesting of emelctromagnetic energy in 24 GHz band
Rokos, Lukáš ; Pokorný, Michal (referee) ; Raida, Zbyněk (advisor)
The thesis describes basic principles of an electromagnetic energy harvesting and its potential use. To gain the energy, a rectenna (rectifying antenna) is selected. The rectenna consists of a patch antenna, a matching circuit and a rectifier circuit. The thesis describes a design of the patch antenna operating at 24 GHz and its matching to the microstrip line with the characteristic impedance 50 . Then, the circuit for matching the rectified is designed using an open-ended stub. The last part of the thesis describes several types of rectifier circuits to be used potentially. Functionality of the designed rectenna has been verified in ANSYS Designer.
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Modeling HF diode in Comsol Multiphysics
Truhlář, Michal ; Pokorný, Michal (referee) ; Raida, Zbyněk (advisor)
This work brings understanding effects in semiconductor diode by rise P-N junction. Attention devote to suggested high frequency semiconductor diode in program Comsol Multiphysics 3.3.Atention is concentrated to optimization model of diode so as volt-ampere characteristic resembles to real characteristics of diodes. Is tried to find a solution to entourage P-N devolution, where this program sensitive on changes geometry’s barriers of these is different types P-N. In work is summary of treatment and advancing by divining and by optimization of high frequency diode. First part describes semiconductor diode like component used in the electrotechnics, which explains rise, descriptions, using and types of used diodes. Second part includes progress of scaling concrete semiconductor high frequency silicon diode. In this work is braining to optimization model of diode to real and research parameters, which influence her descriptions. In last part of my bachelor’s work was created a simple program in Matlab for global optimization. This program by connected with model of diode and check up possibilities of optimizations their parameters
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Recruitment, Selection and Work Adaptation at the Zentiva Company
Pokorný, Michal ; Bernardová, Kateřina (referee) ; Konečná, Zdeňka (advisor)
This diploma thesis focuses on managing process of recruitment, selection and adaptation of workers in a pharmaceutical company Zentiva. The main goal of this diploma thesis is based on the theoretical background and obtained information about the company, which was used for improving suggestions in selected areas. This diploma thesis describes and specifies following steps in the recruitment and subsequent area – employee adaptation.
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Secure converter for an RS-232 standard to the Internet
Pokorný, Michal ; Mlýnek, Petr (referee) ; Koutný, Martin (advisor)
Master´s thesis tries to find a solution to make a secure transmission channel between virtual serial ports on the personal computer and the serial ports on the Rabbit RCM3700 development KIT. Today’s communications channels don't offer appropriate security of a whole communication. Therefore it depends on get-togethers, in order to realize this security themselves. This security means ensuring reliable transmission of data to be encrypted between parties so that any attacker is not able to read real-time, or eventually change them. As a result of this Master thesis is the design and implementation, which in addition to encryption algorithm provides sufficient security and authenticity of communication between the parties. As an encryption algorithm has been chosen widely used AES algorithm and as authentication algorithm has been chosen algorithm, which for authenticity requires knowledge of the secret key.
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Software Tool for Investment Project Evaluation
Pokorný, Michal ; Staněk, Jan (referee) ; Režňáková, Mária (advisor)
This bachelor thesis engages in design and creation of software tool for supporting decision making in comparison of success between potential investment projects. The tool is capable of evaluating recovery of investment by using The Net present value method and Internal rate of return. The risk exposure is taken into account by the Modified net present value and modeling by Monte Carlo method implemented using Microsoft Visual Basic for Application.
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