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Methods for the measurement of bit rates in data networks
Franc, Jan ; Martinásek, Zdeněk (referee) ; Zeman, Václav (advisor)
The target of this master's thesis were the known methods for testing the quality of transfer parameters of data networks. I have studied the RFC 2544 document to analyze these tests. From that information and by studying other existing web-based applications I was able to design a concept of my own application that will allow to measure basic quality parameters of transfers made through the Internet (the parameters: downstream, upstream, latency, variance of these and a traced route). My application doesn't require any modifications on the user's system. It's built on the server-based programming language PHP and uses the relational database engine MySQL to store measurement and user data. On the client side, it's assisted by the JavaScript scripting language. Both registered users and visitors are allowed to perform the listed measurements. Registered users are able to browse the history of their own benchmark results and also to send messages to others. There is an administrative account to oversee the operations. Another part of my thesis work is an application for Windows that performs the same measurements but does not use JavaScript.
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Capacitated Arc Routing Problem
Franc, Zdeněk ; Pelikán, Jan (advisor) ; Fesenko, Anastasiya (referee)
The Capacitated Arc Routing Problem has many applications in real life. The aim of this problem is to minimize the total cost at fulfilment of the requirements of arcs. The Capacitated Arc Routing Problem is an extension of the Chinese Postman Problem, which is a special type of the Vehicle Routing Problems. In this thesis is explained the issue of the Chinese Postman Problem and its extensions at first. Subsequently the applications of mathematical models are illustrated on a model example. However these mathematical models, which are searching the optimal solution, do not use so much in reality. Therefore the randomized heuristic algorithm for solving these problems is suggested and programmed in this thesis. Subsequently this heuristic was applied to case study of garbage collection in Podebrady city.
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Analysis of internal communication in connection with IT, processes and management in a specific organization
Plachá, Alena ; Střížová, Vlasta (advisor) ; Franc, Jan (referee)
This diploma thesis primarily focuses on analysis of internal communication in a particular company and proposals for improvement. To meet this objective, first the importance of the internal communication for the company and the factors that affect it are described. After that channels and tools of internal communication and the importance of IT for communication in the company were generally defined. Then the various means of communication using IT were analyzed. Another information source used in the thesis are the results of the applied research, which was conducted among employees and management of ANAFRA company and focused on identifying critical issues that ANAFRA in the context of internal communication face. The last part of the thesis combines all of the previously gathered information and proposes solutions of the identified problems. Conclusions of the thesis may serve as referential valuable source for professionals and owners of small and medium businesses.
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Surface roughness and resistivity of thin films
Franc, J. ; Novotný, Jan
Surface finish of alumina thin film substrates was measured with stylus profilometer. A connection between the obtained values of Ra and the thin film resistance was studied. No correlation can be found owing to big stylus radius and computation method used in profilometer.
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