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Testing of QoS support in experimental data network
Fogl, Miroslav ; Škorpil, Vladislav (referee) ; Novotný, Vít (advisor)
This work deals with the qualitative requirements on services in IP networks based on technology Ethernet. We describe basic methods for imposing quality control mechanisms on services within networks. We elaborate on the ways, in which packets can be handled, overload controlled and transfer speed in network elements limited. Attention is given also to the Network Layer and Link Layer. Based on concrete specifications of network devices in UTKO laboratory an experimental network was designed and constructed. Network consisting of routers and switches linked several servers with client stations. Various types of data transfers (VoIP, HTTP, FTP, video) were generated. Several techniques for handling packets with different priorities were verified and compared. We observed that, in situations when connections are under full load, implementation of QoS support in the network becomes very important. This observation was confirmed by measurements. We also measured the parameters of the system during simulations of various situations, such as overload of a connection due to unsolicited operations or failure of a connection between routers. In order to guarantee the quality of services it is necessary to create a domain, in which rules are consistently observed in all network elements.
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QoS in UMTS
Kavan, Radovan ; Hanus, Stanislav (referee) ; Kejík, Petr (advisor)
This thesis treats of QoS (Quality of Service) in UMTS system. The term quality of service is frequently used, recently, however not only in computer networks, but also more and more in mobile networks also. Present system of 2nd generation (2G) GSM enables only limited exploitation of QoS function. System UMTS is a system of 3rd generation (3G) already and contains quality of service in greater measure which is ensured with number of algorithms and functions. Individual QoS functions enable effective utilization of radio interface, support maintenance of planned coverage and offer high spectral efficiency. Functions that cater to quality of service are called RRM functions (Radio Resource Management). There exist five basic functions in UMTS system that are Admission control (AC), Power control (PC), Load control (LC), Handover control (HC) and Packet scheduler (PS). These functions are responsible for control of network access, control of power, control of network load, control of handover and packet (bit rate) scheduling. Last three functions are usually collectively designated as Congestion control, control of network overload. UMTS layer model, differentiation of services, traffic classes and 3GPP concept are also discussed. In thesis the attention is piad to Admission control algorithm – control of network access – in the uplink direction and to different ways of load (in the cell) modeling. Individual approaches are simulated in MATLAB. A possibility of using algorithm in the real system is discussed in conclusion.
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Quality of services support in the end applications
Zelinka, Jiří ; Novotný, Vít (referee) ; Hošek, Jiří (advisor)
The topic of this diploma thesis has been chosen for a discussion and implementation of quality of service on the application and link layer of the OSI model. At the beginning of this thesis the general parameters and basic technologies of the OSI model network layer has been explained. This part was chosen as a resource for explanation of the basic parameters in the quality of services. Basic part is followed by the introduction to the Ethernet technology, which became as a ground for the real model in this diploma thesis. As a part of this section has been written a block which contains a analysis of quality of services in the Ethernet, which means the implementation of IEEE 802.1Q/p. This analysis is followed by structured descrition of the controlling and functionality of quality of services parameters on the link layer with the system tool in the Windows XP, description of Win XP link layer drivers and its modification with system tool tcmon. The end of the theoretical part is represented by introduction to the implementation of quality of service in the wireless networks especially the 802.11e standard. At the beginning of the practical part is specified the description of the topology design which is dedicated to the quality of services implementation. This section is developed to well-founded analysis of applications which were used during topology creating. The last segment of this thesis is dedicated to evolving the practical informations which were obtained during the measurement.
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Usage of automated testing in terms of cost and benefits
Lízner, Tomáš ; Buchalcevová, Alena (advisor) ; Zelenka, Petr (referee)
This master's thesis is aimed at creating a methodology for the selection of suitable test for automation testing. The first part is devoted to the definition of the prerequisites for introduction of automated testing and the conditions for its effective course. The second part focuses on defining the exclusion criteria of tests which are unsuitable for automation. The following third part is devoted to defining the selection criteria for the determination of the test priority for automation. The selection criteria have been approved by the head of this thesis and consulted with the supervisor of the practical project, on which the criteria were tested for the first time. Based on these criteria, the individual manual tests are evaluated. Final count of points is used for determination of the test priority. The fourth section is devoted to calculation of the return on investment in automated testing. Because the investments made into the automated testing are very high, it must be assured that their amount will return for the selected period. The fifth part is focused on defining the principles for ensuring the proper maintenance of automated tests and describing the technical complications and frequent problems that may occur during automated testing. The last section is devoted to pilot verification of the methodology on a practical project and for determination of the test priority for automation.
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Strategic urban development planning of the town Domažlice
JANSOVÁ, Nicole
The aim of the thesis "Strategic urban development planning of the town Domažlice" was to evaluate entire process of preparation, creation and implementation of the strategic plan of the municipality. The theoretical part reviews scientific literature focused on strategic planning and the characteristics of the strategic plan. Practical part contains analysis of Strategic Development Plan of the town Domažlice.
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Factors affecting the achievement of goals
Harčárová, Andrea ; Franková, Emilie (advisor) ; Surynek, Alois (referee)
In my thesis I focus on the analysis of the various factors that influence the achievement of sales targets in a Southwestern Company. In the theoretical part on the basis of available literature and Internet sources I describe the the objectives, its origins, the process of setting goals and what should be the essential requirements while setting them. Also, how do you prioritize and plan the process of achieving the goal. The theoretical part describes the Southwestern company and its history, a summer program for students from universities and research where I analyze and discuss some of the factors that help dealers to be the most successful.
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McDonaldization of Czech Society
SALZEROVÁ, Michaela
The general framework of this work is an infliction of a present phenomenon ? McDonalization in Czech society. The theoretical part deals with McDonalization, as such, its causes, development and its consequences that can be found in our nearest surroundings. The first part of the work deals with the concepts prior to this like rationalization process, scientific management and the assembly line as Ritzer stated in his book The Mcdonaldization of Society. Furthermore I am focusing on the lifestyle and values which people have today. The paper tries to find and highlight the consequences arising from the contemporary life of mostly young people visiting McDonald´s and similar fast-food restaurants. It outlines projects seeking to change this trend and points to the risks that arise from this trend. In the next part of the work I identify the relationship of people eating in McDonald´s to the responsibility for the upbringing of children and youth, not only in healthy eating. I also present my own project that represents an ordinary devotee of this group, where I try to demonstrate the current state of society and the way of educating young people. In the conclusion of the work I point possible different lifestyles. And I also outline possible sources where you can find an inspiration for keeping and upbringing children.
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Special models of the theory of queue
Otarbayeva, Zhamilya ; Kořenář, Václav (advisor) ; Šindelářová, Irena (referee)
Abstract Title: Special models of the theory of queue Author: Zhamilya Otarbayeva Department: Department of Econometrics Supervisor: Ing. Václav Kořenář, CSc. The main aim of this work is describe more complicated queuing models. Firstly I described the models with priority. There are mentioned three types of them: relative, absolute and dynamic. For describing I used formulas and examples from people's life for showing situations where we can meet such kind of queuing models. The second theoretical part contains description of non-Poisson models. I explain four of them: model with Erlang's input and exponential service time, Poisson's input with Erlang's service time, deterministic and general distributions. There are shown formulas for average waiting time in queue, average number of requests in queue and in the system. In practical part are illustrated examples for some models, which were described. The main characteristics of the queuing system are mentioned in the first chapter of this work.
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Analysis of demand university students in tourism
Štefanová, Zdeňka ; Petrů, Zdenka (advisor) ; Voříšková, Barbora (referee)
This bachelor thesis focuses on analysis of questionnaires which refer to demand of university students in tourism. First part deals with tourism generally. There is a short description of history and trends in Internet social networks which are closely connected with tourism and new form of communication among young people. This chapter also includes a typology of tourism which is important for the analysis. The second part pays attention to university student duties and rights and defines Czech university education. The third part deals with a breakdown of the questionnares which were made exclusively for this bachelor thesis and gives characteristics of university students preferences in tourism.
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A possibilities of strategic tourism development in the area Nová Paka
RYBOVÁ, Adéla
The aim of this thesis was to formulate possibilities of strategic tourism development in the area Nová Paka. This region, although not one of the best known tourist destinations of the Czech Republic, it certainly has enough natural and cultural-historical potential for tourism necessary. In addition, it is situated in a strategic location between the Giant Mountains and the Bohemian paradise. In 2005 Novopacko also incorporated in Czech Paradise Geopark, which belongs to the European Geoparks Network. Tourism should become one of the priorities for the development of the territory and improvement of the situation of the population. This can be particularly achieved by effective use of primary and secondary upgrading of tourism potential. The information found on the basis of marketing research and a SWOT analysis were divided into three thematic units - the natural and cultural-historical potential, basic and accompanying infrastructure and promotion of the region. Subsequently a vision, priorities and measures for development of tourism in Nova Paka were established.
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