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Voltage magnitude deviations in a low-voltage distribution network due to increase in impedance of Y-connected load node to ground and unbalanced load
Blažek, Ondřej ; Paar, Martin (referee) ; Drápela, Jiří (advisor)
This work deals with the issue of an unbalanced power load of a three-phase main load and the associated network load of a PEN conductor. The introduction discusses the various types of systems where the distribution networks are implemented. Followed by the description of network segments causing issues discussed in this paper. The theoretical part discusses the possible operating conditions which lead to balancing the flow of neutral current, also shows the relation of the size of countervailing power charges and the form of the network load. There are also hints of possible risks that the mentioned situations may cause to the network operation in terms of function and safety. The practical part deals with the mathematical simulation model created in MATLAB. There are simulations based on which there is a description of the network behavior for the cases of induced adverse factors. The conclusion summarizes the most important results and findings produced by the simulations.
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Generator of illegitimate network traffic
Blažek, Ondřej ; Smékal, David (referee) ; Blažek, Petr (advisor)
The diploma thesis deals with the problems of DoS/DDoS attacks and development of a tool, in C lanugage, for generating them. In the first chapter the principles of DoS attacks targeting the internet and transport layers of ISO/OSI model are described and also according to their characteristics divided. Selected attacks on the application layer are also described here in detail togehter with protocols which they are based on. In the following chapter there has been created a comparison of freely available tools, which could be used as a attack generators. The practical part is dedicated to a development of a tool for DoS attacks, especially design, general description and usage. Further there is a summary of the newly created library, including results of web server testing, and extensions of a web interface, which is part of the developed tool.
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CONTROL SYSTEM DEDUSTING ARC MELTING FURNACES
Blažek, Ondřej ; Klíma, Bohumil (referee) ; Huták, Petr (advisor)
This master´s thesis deals with control and process visualization system dedusting arc melting furnaces, the subject of this master´s thesis is electrical part of the ventilation system from the control system via industrial communication to the design of power components, which include the main fan motor powering inverter. Another part is paid to the design and description of the proceedings, a concept of the control program, design visualization, implementation, remote access and archiving of process values. The last part contains evaluation of the project in terms of the preparatory phase and in terms of commissioning, in particular the description of the additional work that had to be compared to the proposal for commissioning performed.
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Current trends in the security of Wi-Fi IEEE 802.11 networks
Blažek, Ondřej ; Škorpil, Vladislav (referee) ; Endrle, Pavel (advisor)
This work describes security options of 802.11 standard. Principle of WEP algorithm is described here, problem with his inicialization vector which leads to a statistical attack and revelation of his secret key. Moreover other principles of algorithms such as WPA, WPA2 are explained here along with a practical demonstration of bruteforce attack in a practical part of the thesis. Also the influence of encryption on network throughput is tested here using tool Iperf.
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Employment Relationship in Terms of the Optimization of Costs
Blažek, Ondřej ; MBA, Radek Jurečka, (referee) ; Musilová, Helena (advisor)
Bachelor thesis is focused on the creation and termination of employment and agreements on work performed outside of employment, according to the legislation of the Czech republic. Assesses the current situation in the company named Cirex s.r.o and suggests procedures to achieve financial savings. It deals with the outsourcing and agency's work in the infrastructure of this firm and streamlining the procedure before the creation of employment.
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Employee Motivation in a Selected Business Company and Changes Related with its Concept.
Blažek, Ondřej ; MBA, Radek Jurečka, (referee) ; Konečná, Zdeňka (advisor)
The main aim of this thesis is to propose changes to the current motivational program in a selected business corporation and other areas closely related to employee motivation. To achieve this goal, the relevant theoretical background has been studied. Subsequently, key terms such as motivation, stimulation and others were defined. Furthermore, an analysis of the current situation in the company was made. The research consists of a statistical test that examines the relationship of pre-specified qualitative factors. The calculations are based on data from the questionnaire survey. The results can, for example, indicate whether factors in the form of work environment, age or level of education affect employee preferences in motivation. Based on the acquired knowledge and data, specific changes in relation to employee motivation were proposed. For example, a proposal in the area of financial or non-financial bonuses, a program for young people, leisure activities, competition employee of the month and others.
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Employee Motivation in a Selected Business Company and Changes Related with its Concept.
Blažek, Ondřej ; MBA, Radek Jurečka, (referee) ; Konečná, Zdeňka (advisor)
The main aim of this thesis is to propose changes to the current motivational program in a selected business corporation and other areas closely related to employee motivation. To achieve this goal, the relevant theoretical background has been studied. Subsequently, key terms such as motivation, stimulation and others were defined. Furthermore, an analysis of the current situation in the company was made. The research consists of a statistical test that examines the relationship of pre-specified qualitative factors. The calculations are based on data from the questionnaire survey. The results can, for example, indicate whether factors in the form of work environment, age or level of education affect employee preferences in motivation. Based on the acquired knowledge and data, specific changes in relation to employee motivation were proposed. For example, a proposal in the area of financial or non-financial bonuses, a program for young people, leisure activities, competition employee of the month and others.
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Limits of Europeanisation in Turkey: The Potential Relation between Economic Policy and Foreign Policy towards the EU
Blažek, Ondřej ; Weiss, Tomáš (advisor) ; Šlosarčík, Ivo (referee)
This diploma thesis deals with the Europeanisation of the third states and its limits. The thesis is a one-case study focusing on Turkey and Europeanisation of its foreign policy. Foreign Policy Analysis has been chosen as the research method. The method focuses on economic relations between Turkey and the EU and other subjects and searches for potential correlation with foreign policy making process. At first, the thesis researches the historical context of the relations of the EU and Turkey, describes the governing party AKP and analyses the changes in foreign policy. Economic relations are presented by Turkish exports and imports and inward and outward foreign direct investments. At the beginning of its government, the AKP party put a lot of effort to Europeanisation of the country in matter of reforms which brought better legislation and increase of FDI, but also mutual trade with the EU. During the years, fluctuations in mutual relations appeared but these did not have any significant influence on the political relations. As well as deterioration in political relations did not influence mutual trade. The EU is still the most important trade partner of Turkey despite the fluctuations. If a turn away the EU should have come, the motives would come most probably from internal politics...
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The Limits of Europeanisation in Turkey: The Influence of Economy and Religion on Foreign Policy towards the EU
Blažek, Ondřej ; Weiss, Tomáš (advisor) ; Najšlová, Lucia (referee)
The diploma thesis deals with the phenomena of Europeanisation of the third states and its limits. The thesis is a one-case study focusing on Turkey and Europeanization of its foreign policy. Foreign Policy Analysis was chosen as the method of the paper. It focuses here on the internal changes in Turkey that came up with the AKP party government and led to the change in foreign policy in which the relations with the EU were given less room. Economy and religion are analysed as two major limits of Europeanization. Economy was one of the motives on which the change of orientation of foreign policy was based when Turkey started establishing tighter relations with states in the regions of Middle East and Africa. Turkey was building its image as the hegemon and mediator in the region to protect its foreign investments. The AKP was a pro-Islamic political party and religion plays also a role in Turkish foreign policy. Since the AKP started ruling the country it has been reducing the secularization despite it was one of the pillars of the republic since it had been established. Islam became the unofficial but important factor in orientation of Turkish foreign policy. These factors had influence on Europeanization of the country because EU was becoming less priority region and this fact divided the...
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