National Repository of Grey Literature 339 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
History of protection relays
Šafl, Pavel ; Koudelka, Jan (referee) ; Bukvišová, Zuzana (advisor)
The bachelor thesis deals with mapping the origin and history of electrical pro-tections. The work outlines the circumstances and the new types of protection. It expla-ins and introduces problems encountered in the development and operation of historical protections. On the overcurrent protection AB31, AT31 and REF615, the tripping characte-ristic was measured to evaluate and compare modern digital protection and historical electromagnetic protection. Dependent protection AB31 has been tested and measured for its dependent characteristics and the AT31 protection has been checked for short-circuit current capability. Both of these protections were compared and evaluated with the REF615 digital protection. The measurement results and calculations are processed into well-arranged tables and graphs that are part of the work. The last part of this thesis is the selection of suitable protections for describing and making small exposures.
History of protection relays
Šafl, Pavel ; Koudelka, Jan (referee) ; Bukvišová, Zuzana (advisor)
The bachelor thesis deals with mapping the origin and history of electrical pro-tections. The work outlines the circumstances and the new types of protection. It expla-ins and introduces problems encountered in the development and operation of historical protections. On the overcurrent protection AB31, AT31 and REF615, the tripping characte-ristic was measured to evaluate and compare modern digital protection and historical electromagnetic protection. Dependent protection AB31 has been tested and measured for its dependent characteristics and the AT31 protection has been checked for short-circuit current capability. Both of these protections were compared and evaluated with the REF615 digital protection. The measurement results and calculations are processed into well-arranged tables and graphs that are part of the work. The last part of this thesis is the selection of suitable protections for describing and making small exposures.
Comparison of short-circuit current calculations by simulation programs with the standard ČSN EN 60909 ed.2
Procházka, Jiří ; Koudelka, Jan (referee) ; Bátora, Branislav (advisor)
This master's thesis deals with the comparison of the short-circuit current calculation for a model example according to the standard IEC 60909-0:2016 with simulation programs. The first part deals with short-circuit in general together with an example of calculation of short-circuit currents. The next part of the master’s thesis deals with creating models of network elements by different simulation programs. The last part deals with dynamic simulation of model example together with programs settings. Finally, the results of simulations are evaluated.
Frequency Measurement In Pscad
Koudelka, Jan
The article deals with the issue of frequency measurement in PSCAD software. The objective is to assess frequency waveform in buses of the grid calculated by PSCAD when outage of one generator occurs. Two simulations respecting different electrical distance between buses were accomplished. Simulation results show the correct assessment of the influence of electrical distance between buses, however inaccurate calculation of frequency comparing to speed of generators. The main contribution is to point out that frequency calculated from voltage waveform can be incorrect, which can cause false operation of protective relays.
Analysis of Frequency Measurement and RoCoF in Simulation Programs
Koudelka, Jan ; Máslo, Karel (referee) ; Orságová, Jaroslava (advisor)
The thesis deals with the issue of measurement of frequency and its derivative (RoCoF) in simulation software. The aim of the thesis was to compare results obtained in three different pieces of software (PSS/E, PSCAD, MODES). 2 disturbances were simulated in a grid model IEEE 39 bus system and values of frequency and generator speed were assessed. The results obtained in different software are diverse. This is influenced by method of modelling of synchronous generator and algorithm of calculation of frequency. Findings are important for future investigation of power system transients in simulation software and also point to potencial incorrect assassement of frequency in protective relays.
Influence of celebrity endorsement on consumer behaviour of youth
Veis, Roman ; Koudelka, Jan (advisor) ; Vávra, Oldřich (referee)
This bachelor thesis deals with role of celebrities in advertising, involvement of celebrities in marketing communication and influence of celebrity endorsement on consumer behaviour. The aim of this thesis is to investigate the influence of the celebrity endorsement in advertising campaign on decisions of consumers, primarily at age from 19 to 26. Literature based theoretical part describes the term consumer, reference group, its types and an endorsement of celebrities in marketing. The practical part deals with content analysis of three different magazines, where is examined advertising using reference groups. Practical part is also focused on a survey that examines how celebrities influence behaviour of young people and how are celebrities in advertising perceived. In conclusion are compared results of content analysis and online survey, mentioned recommendation of celebrity endorsement for marketing orientation and summarised whole bachelor thesis.
The category management on the supplier´s side
Michálková, Eva ; Koudelka, Jan (advisor) ; Láska, Martin (referee)
The Master´s Thesis deals with the category management on the supplier´s side. The main objective of the thesis is to find the best shelf optimization for the selected categories. In the theoretical part there are defined the main terms and the category management process. The analytical part is then focused on the whole category management process in Albert. The analytical part is based on primary and secondary data. The primary data consists of quantitative questionnaire, observation and interview with customers. The secondary data are based on MML-TGI research, GfK reports and Nielsen reports. In the thesis there is a big emphasis on the customer shopping behaviour. At the end of the thesis there are given shelf proposals and recommendations to the retailer.
Analysis of consumer behaviour in the field of organic foods
Matějková, Jana ; Horová, Olga (advisor) ; Koudelka, Jan (referee)
This thesis focuses on the analysis of information and consumer awareness of organic farming and organic production. The work is divided into two parts: theoretical and practical. The theoretical part deals with definitions of basic economic terms such as consumers and consumer behaviour, describes the purchase decision-making process and its phases and includes factors that influence consumer decisions in relation to the socalled black box. Furthermore, it also describes the basic principles of organic farming and foods, including their labelling and checks. The practical part includes my own marketing research, which was conducted with the help of quantitative methods using a questionnaire. It focuses on the knowledge and consumers behaviour in the organic foods area. The aim of this thesis is to determine the awareness of Czech consumers about organic farming and its products and to analyse consumer behaviour in the field of organic foods.
Farmers markets
Mládková, Martina ; Zamazalová, Marcela (advisor) ; Koudelka, Jan (referee)
This thesis deals with consumers, who buy farm food in Prague and its surroundings. The aim of this work is to find out the awareness and attitudes of consumers in Prague about the possibilities of purchasing farm food, to evaluate the place and frequency of the purchase and their motivation to buy. The theoretical part defines the farmers' markets, their history, the code, the process of establishing the market, the differences between farm and organic food and other forms of farm food sales. On the basis of the questionnaire survey and the results processed in the practical part, the differences in consumer behavior of women and men in different age categories are identified, who is a typical consumer and what preferences he or she has. Based on the final summary, this thesis suggests some solutions and recommendations on how to change the situation for the better.
Marketing strategy possibilities in a selected field
Radimerský, Martin ; Koudelka, Jan (advisor) ; Kolouchová, Daniela (referee)
The bachelor thesis deals with the possibilities of marketing strategy in the selected area, which is the sports shoes and apparel market. Its main objective is to analyze and evaluate the marketing strategy of two leaders of the market - Adidas and Nike, and based on this analysis, with the projection of the specifics of Czech market, to develop a marketing strategy proposal for the company newly entering the market. The theoretical-methodological part summarizes the current knowledge of marketing, defines the basic concepts and describes the methodology used for the elaboration. The practical part deals with specific brands, outlines their market position and analyzes the marketing mix. It also explores brand perception and marketing mix among Czech consumers using MML-TGI data and its own questionnaire survey. At the end, the marketing strategies of both brands are thoroughly evaluated and based on this assessment, with inspiration from the primary data analysis, a marketing strategy for the new company is created.

National Repository of Grey Literature : 339 records found   1 - 10nextend  jump to record:
See also: similar author names
4 KOUDELKA, Jaroslav
2 Koudelka, Jakub
4 Koudelka, Jaroslav
3 Koudelka, Jiří
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