This thesis is a comparative efficiency study of implementation of payment operations via electronic banking and bank branch network. The thesis used data of specific international bank operating in the Czech Republic. The thesis is divided into two parts. The theoretical part deals with basic products, payment systems, describe the main forms of electronic banking and part is devoted to the economic benefits of electronic banking for the bank and for the client. The practical part consists of a cost analysis of payment operations realized via by electronic banking and bank branches. In conclusion of this thesis, these costs are compared and the result is a proposed new bank strategy.

Diploma thesis deals with development of the business activities of M Computers s. r. o., specifically with development of the business activities in Lenovoshop, which the company manages. Based on the theoretical knowledge, the analysis of the external and internal environment will be carried out in this work. The reason is to assess the current market situation and the company. The result of the work is to provide suggestions and recommendations for the awareness raising and increasing sales turnover of the Lenovoshop.

The diploma thesis deals with the modern design of the control circuits for digital potentiometers and their application in analog systems. The concept of the digital control is demonstrated on the electronically controlled active 2-nd order filter and programmable oscillator. The proposed design of the active filter describes a programmable active 2-nd order filter Sallen-Key. In this circuit it is possible independently programme cut-off frequency, Q factor and type of approximation with very good accuracy. The circuits of the designed filter and designed oscillator are simulated in PSpice (OrCAD), parasite effects and effects of the real parts are studied. Properties simulated circuits are compare with experimental results. These results appreciate quality and efficiency of the digitally controlled potentiometers in dependence on variable input circuit parameters. Integral part of this project is author’s universal control program called Digipot and comunications interface for many types of digital potentiometers with I2C, SPI or Up/Down interface. It is possible to use this device for many applications. The constructional details of the filter are presented at the end of this work. The software equipment is availability on enclosed CD.

The thesis deals with analyses of the laboratory symmetrical supplies with adjustable output voltage. It also describes different kinds of current cut-out circuits and several most frequent supply connection schemes. Analyses (simulation program OrCAD) show the characteristics and behaviour of the mentioned supplies. To set the output voltage, operational amplifier structures or linear three-terminal voltage regulator are very often used. The suggested supply was tested and its parameters compared with the simulations. The value of output voltage and current can be controlled with a computer with a USB port. For controlling of the output voltage and current the digital potentiometers were used and controlled by I2C bus.

The master’s thesis is devoted to exploiting of gas-discharge lamps and their dependence on frequency of the supply current. The first part describes the theory of discharge, its types and properties, terms of its origin, and ways of its exploitation. The second part concerns electrical ballast systems of gas discharge light sources, inductive (reactive) and electronic ballasts, principles of their functioning, advantages and disadvantages, and the comparison of their properties. The following chapters deal with low-pressure and high-pressure gas-discharged lamps, compare their properties and describe exploitation of fluorescent lamps. Before conducting the experiment we have described the influence of frequency of the supply current on fluorescent tube lamps. Preparations for laboratory measuring have been also implemented. During the experiment the two types of lamps have been analyzed, the results of the research are summed up in the conclusion.

This master’s thesis is concerned with the creation of a proposal of internet bookshop. It consists of theoretical findings of internet shopping, analysis of present situation as well as trends in the book area. The goal of my diploma thesis is to project a model of internet shop including necessary changes in company's structure and finally the economical summary of the project.

This master`s thesis deals with comprehensive proposal of new web pages design with e-commerce. It contains analysis of actual website, actual trends and design of optimal e-commerce solution, as new web pages design, functions, design of code structure and content structure and its implementation to internet server. It also includes economic point of view and strategic concept of new web with e-commerce.

The thesis summarizes the possible ways of using the Internet to implement e commerce within the meaning of trade in education. The work deals with the forms of computer-assisted teaching methods, summarizes the applicable software tools, web portals and educational applications, focusing on the creation and dissemination of study materials, and complete learning management systems.

The content of the paper is to model new company in the American state, Nevada and its operation from the Czech Republic over the Internet. In this thesis is included theoretical resources, analytical section discusses the types of companies in the USA, the tax liability of companies related to the USA legislation and the final section proposes solution together with a cost calculation to establish a new company. And also which kind of services are used for doing business in the USA over the Internet.

This thesis is focused on promoting the company Winery Josef Uher through Internet market. This is especially the design of appropriate ways of selling products of analyzed company using the internet and several options of internet promotion thanks to which the Josef Uher Winery will atrract new customers. The thesis contains theoretical knowledge of solved problems, further analysis focused on exploring the external and internal environment of the company, e-commerce and questionnaire investigation. The main part of this work depicts some ideas which should help the companies to attract new customers in the future, ensure better marketing of products and thus achieving greater profit.