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Voting service for IPTV
Menclík, Tomáš ; Karásek, Jan (referee) ; Müller, Jakub (advisor)
This thesis deals with a concept and implementation of voting service for IPTV. Implementation of this service is executed in programming language Java and uses programming structures, which were already done. These structures are intended for simulation of propertys of tree transmition protocol. Outside of the concept and implementation of voting service, there are presented protocols, which IPTV uses for communication. And also voting service, implemented in this thesis, uses their propertys. There are also mentioned dierences between outlined and implemented voting service as the implementation does not keep strictly the concept of the voting service.
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SIP Client for Windows Mobile
Regueyra, Philip ; Müller, Jakub (referee) ; Číka, Petr (advisor)
The main objective of this thesis is the design and implementation of client software, which will be able to conduct a phone connection through the packet network. Signalling protocol SIP together with RTP, the protocol for the transmission of multimedia, is used for this intention. Structure and functioning of the SIP protocol and RTP protocol is analyzed in this thesis. This is introducing with the issue, not a detailed study of these instruments. In addition, a brief overview of the Windows Mobile operating system for which the application is intended primarily is released. The characteristic of several libraries that have been considered for use in the application is briefly described in this thesis. Next the design of solution and the analysis of the program follow. In the last part the functioning of the program is described and its behavior is tested in various model situations.
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Location of hosts in IPTV system
Pokludová, Michaela ; Burget, Radim (referee) ; Müller, Jakub (advisor)
This thesis deals with locating station in the digital television broadcast over the Internet Protocol. The aim of this thesis was to develop a general model for the location of stations in the system of internet TV. This work deals with the five known methods for locating stations in distributed systems, which compares as many criteria, such as coordinates of computation speed, accuracy of results. Based on the evaluation was selected optimal method, which has been incorporated into the simulation program IPTV and tested. The result of this work is the source code of the implemented methods.
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Localization of nodes in Internet using Lighthouses system
Smrčka, Lukáš ; Müller, Jakub (referee) ; Komosný, Dan (advisor)
The thesis is focused on the localization of stations in the Internet with the help of artificial coordinate systems. These systems can be used to estimate the delay value of RTT between individual stations. The estimated delay value can e.g. help the station to choose an optimal second station for communication between two stations without the necessity to measure these values, which reduces the load of the net. The first part of the thesis describes systems that predict the delay and explains how the methods Vivaldi, Kings, GNP and Lighthouses work. The next part of the work gives basic information about environment where the chosen method shall be implemented. The final part defines both the Lighthouses method and a program designed to be used in the experimental PlanetLab network and it also evaluates achieved accuracy of the estimation.
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Human activity classification
Müller, Jakub ; Smital, Lukáš (referee) ; Smíšek, Radovan (advisor)
This bachelor's thesis describes daily activity classification using accelerometric data. The first theoretical part summarizes the basics about daily activity and benefits that we get from monitoring it. In the next part of theory the principles of accelerometer inner workings are described. The last part of theory is dedicated to explaining the basics of neural networks and SVM. The aim of the practical part was to find a suitable dataset from a publicaly shared database, containing daily activity accelerometric data and also to collect our own data. Then performing classification using our own algorithm, optimizing it and finally evaluating the results.
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Optimization of signalization channel for Internet television
Matej, Michal ; Balej, Jiří (referee) ; Müller, Jakub (advisor)
The aim of this Bachelor's thesis is to propose a mechanism for optimizing the signaling channel in case of Feedback Target overload in hierarchical aggregation tree. Consequently to this verify the implementation of this mechanism in simulation environment of Java and to achieve the balance load among Feedback Targets. The theoretical part discusses the significant differences between traditional television transmission and television transmitted via the IP protocol, the methods of data transmission in IP network and key protocol called Tree Transmission Protocol working on the application layer of TCP/IP model. In this part there are explained the concepts of hierarchical aggregation of feedback channel such as Feedback Target Manager, Feedback Target, as well as packets FTD, FTS, and FTI.
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Node localization on the Internet using domain name system
Dvořák, Petr ; Müller, Jakub (referee) ; Komosný, Dan (advisor)
This paper describes various systems that are used to predict delay among nodes . It focuses on systems using for prediction delay artificial coordinate systems, and on the systems, which use physical measurements of delay. Primarily, however, it deals with the King method, which uses the system for translation of domain names - DNS (Domain Name System) to predict the delay. Next, the principle of the King method is outlined in detail. Practical part includes a description of the two created simulations in program Matlab. The first application described simulates the King method principle. The second simulation is then tasked with creating 2D geometric space in which nodes and DNS servers are randomly generated. The result is dependence of RTT prediction accuracy on the number of randomly generated DNS servers. Based on this dependency the method King is compared with other methods in the end.
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Localization of nodes in Internet using King system
Exler, Michal ; Müller, Jakub (referee) ; Komosný, Dan (advisor)
This thesis is focus on problematics of nodes localization in Internet. There are describe methods for prediction latency by using artificial coordinates systems and by using direct measurement. This thesis is primarily focus on method names King, which is estimates latency between arbitrary end hosts by using recursive DNS queries in system for translate domain name.
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Application for PDA for multimedia stream presentation and processing
Javorček, Martin ; Číka, Petr (referee) ; Müller, Jakub (advisor)
This thesis deals with creating application for PDA for multimedia stream presentation and processing. Introduction of the thesis is devoted to the theoretical explanation of terms such as PDA (Personal Digital Assistant) and Windows Mobile 6.0. Readers will be acquainted with the technology of .NET Framework and also with its version for mobile equipment .NET Compact Framework. Advantages as well as disadvantages of .NET technology are dealt with in this section together with the same phenomena of C# programming language, which is the basic language used for running our application. Next chapters of the thesis deal with my own design of multimedia application, especially from the point of view of classes. For better orientation and understanding UML diagram is used. UML (Unified Modeling Language) is a graphic language intended for visualization and documentation of programming systems. Except of general description of the classes there is also a detailed explanation of individual attributes and application methods. Their function and purpose are explained here as well. In the next part of the thesis attention is paid to the network communication of the application, both in terms of individual multimedia files transmission and stream transmission. Principles of connection and disconnection between client and server are analyzed in this part. Client’ s part of the application is designed for the mobile equipment with Microsoft Windows Mobile 6.0 operation system and server’s part of application is designed for computers, where Microsoft Windows XP operation system is installed. A concise manual for operating both the applications is included. This part also describes some exceptions which may occur in case of problems with connection. Last chapters describe synchronization of mobile equipment or emulator with a desktop computer and provide the reader with the summary of supported audio formats in multimedia application. All achieved results are summarized in the concluding part of the thesis.
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Composite printing for 3D FDM printer
Műller, Jakub ; Sliwková, Petra (referee) ; Zemčík, Oskar (advisor)
This diploma thesis deals with the study of 3D printing based on the FDM method. This method focuses on the possibility of using two extruders it means that the composite parts can be printed. This diploma thesis describes the available variants of composite printing currently on the market. Based on the gained knowledge and the availability of 3D printers and software, individual variants of composite parts were printed. A tensile test was performed on these samples to determine the strength characteristics. Additionally, compatibility and adhesion of two selected materials were tested. Based on the testing is made an evaluation of the achieved results, effectiveness and feasibility.
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