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Queue Management in Network Active Elements
Pancák, Matej ; Kubánková, Anna (referee) ; Koton, Jaroslav (advisor)
This thesis is mainly focused on efficiency of data handling on active network elements and monitoring of transmission speeds in real and testing networks. The purpose of this work is to create and implement algorithm which is able to reorganize list of Mangle rules. The purpose of this optimization is to raise data processing efficiency and decrease communication delay as main QoS parameter. The result of the work is series of measurements in order to confirm the effect of optimizations on the transmission and other parameters.
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Quality of Service Ensurence in Data-Networks
Mareček, Petr ; Komosný, Dan (referee) ; Koton, Jaroslav (advisor)
The thesis deals with the issue of ensuring the Quality of Service (QoS) in data networks. The first part is theoretical, where is described QoS technology and her mechanisms. At the end of the theoretical part, possible queuing systems are shortly presented. The second part of the thesis deals with the design and implementation of a laboratory exercise with the aim of proving theoretical knowledge and evaluating the suitability of a certain queuing system according to the provided services.
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Abstract Data Types for C Language
Duda, Tomáš ; Křena, Bohuslav (referee) ; Honzík, Jan M. (advisor)
This thesis deals with abstract data types in C language. There are explained abstract data types principles and operations around it. The main object of this thesis is a student scripts transcription, which is written in Pascal language, to the C language. Within all this belongs also an animated program for demonstration. This program animates operations around linear lists and is implemented in FLASH environment.
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An analysis of differential equations for systems involving bottlenecks
Borkovec, Ondřej ; Opluštil, Zdeněk (referee) ; Kisela, Tomáš (advisor)
This thesis deals with modelling of the flow of products through systems involving bottlenecks using ordinary differential equations. The model is based on hydrodynamics analogy. Further, the conditions for the sustainability of a system, that is the requirements needed not to exceed the maximal capacity, so that the flow of products can flow continuously through the given spot. A model is used to solve examples for vayrying systems.
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System for Support of Dynamic Data Structures Learning
Trávníček, Jiří ; Grulich, Lukáš (referee) ; Křena, Bohuslav (advisor)
The main objective of this work is to design and implement an application that can be used as an aid for the education of programming essentials. Particularly, the attention focuses on the domain of dynamic data structures. The target application will be implemented with the use of web technologies so that it can be run in an ordinary WWW browser. First of all, a brief introduction recapitulates the data structures to be covered. Then the work summarizes the usable technologies available within the web browsers with the focus on the particular technology (which is DHTML) that will become the target platform. The most significant part of this work then discusses the design of the final application. This rather theoretical part is then followed by the description of the practical implementation. A short user manual is also included.
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Eye tracking
Magula, Filip ; Rajmic, Pavel (referee) ; Vlach, Jan (advisor)
This work deals with tracing the eyes in real-time video using infrared radiation treatment and detection of its rebound on pupils. It describes the human eye and its response to infrared radiation. It contains proposals for hardware and software solutions and the final realization of the basic options in Simulink, explains the selected methods of digital image processing and includes an assessment of the methods used in this work in conclusion.
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Experimental network for QoS support testing
Fogl, Miroslav ; Mácha, Tomáš (referee) ; Novotný, Vít (advisor)
The work specifies problems with support of qualitative requirements in IP network services on the network and link layer. There are also described options of qualitative support of individual networking components in the UTKO laboratory (routers, L3 switches). Created experimental network is loaded by various types of service (VoIP, FTP, HTTP, Video). Data services realization is ensured by available terminals (IP phones, IP cameras, IP video-phones, servers, client stations). Metering is targeted on the manipulation with packets in the router. Options which Cisco router offers are verified by packet analysis. Available methods of dropping are compared on the base of metering and evaluated. Optimal handling with output queue after metering in experimental network is LLQ mechanism. It is able to prefer packets according to their priority in the IP header. Further the difference of link overloading by huge dataflow after QoS policy using is simulated. To reach availability of data services in the whole network is necessary to deal with mechanisms for qualitative services support in all the network components in the network.
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Central server load impact on the IMS network
Kňazovický, Pavel ; Nagy, Ľuboš (referee) ; Mácha, Tomáš (advisor)
This master’s thesis deals with architecture of the IMS network and analysis of the affects when loading the network. Architecture of IMS is a network of new generation. It convergates fixed and mobile networks and it enables quick installation of new multimedia services. The first chapter is focused on the description of the IMS architecture, its components and their function. The next chapter is devoted to the main protocols in the IMS system. It is mainly about signalization protocol SIP. The third chapter focuses on the queueing theory. For simulation of the IMS network, Open IMS Core enviroment was chosen, described in the fourth chapter. Next chapter is dedicated to the IMS Bench SIPp tool used for generating and testing the SIP protocol with focus on the IMS. The final chapter dedicates to the realization of an IMS network. The begining of this chapter deals with the description of individual conections generated by the IMS Bench SIPp tool. In the next part load tests focused on the created IMS network are created and analyzed in detail. The end of the chapter describes the implementation of the real finished call between devices and the Android operating system.
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