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Analysis and modeling of network data traffic
Paukeje, Ján ; Novotný, Vít (referee) ; Růčka, Lukáš (advisor)
Theses deals with network traffic modeling focused on elaboration by time series analysis. The nature of network traffic is discussed above all http traffic. First three chapters are theoretical, which describes time series and basic models, linear AR, MA, ARMA, ARIMA and nonlinear ARCH. Other chapters define terms like self-similarity and long range dependence. It is demonstrated a failure of conventional models which cannot capture these specific properties of network data traffic. On the basis of study in chapter 6. is closely described the combined ARIMA/GARCH model and its parameter estimation procedure. Applied part of this theses deals with procedure of estimation and fitting the estimation model to observed network traffic. After an estimation a few future values are predicted on the basis of estimated model. These predicted values are consequently compared with real data.
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Control and monitoring unit for optical link station
Podzimek, David ; Vařacha, František (referee) ; Prokeš, Aleš (advisor)
The aim of Master thesis "Control and monitoring unit for optical link station" is a web server, enabling communication microcontroller with the user. The communication is based on TCP/IP model. Work an overview of the various parts of the TCP/IP model. The main part of this work is devoted to the software created. The core of unit are microcontroller C8051F120 and ethernet controller CP2200 made by Silicon Laboratories.
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Position navigation system with GSM interface
Pristach, Marián ; Khatib, Nabhan (referee) ; Kadlec, Jaroslav (advisor)
The objective of the diploma thesis is to design a device for positioning of mobile devices using GPS satellites. When coordinates are acquired they can be sent via the GSM network to a user's cell phone or to an SQL server. A web interface has been designed to access the stored data and to show the current device position and the history. This position datalogging system can be used for monitoring vehicles as well as a security system for cars.
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Centralised web-based personal data management system
Mazur, Kornel ; Kacálek, Jan (referee) ; Malý, Jan (advisor)
This diploma thesis deals with a central user identification and personal data management on the Internet. The first part analyzes questions of a identification process and discusses the requirements for implementation, security and user-friendliness. Subsequently, the process is designed with respect to the defined requirements. A detailed overview of possible attacks to the system and means of protection against them is also included in the thesis. The described methods are as follows: Phishing, Man in the middle, hardware modification and acoustic keypress emissions. A practical design of a identification system is discussed in the second part of the thesis. It consists of two parts: a library implementable to individual Internet services requiring a user identification and a server centrally identificating the users and storing their personal data and passwords. An implementation in Joomla content management system is also described.
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System for remote measuring and data storing in central database
Šváb, Jaroslav ; Pust, Radim (referee) ; Šebela, Radek (advisor)
This Master´s thesis deals with the design and implementation of System for remote measuring and data storing in central databese. The system consists of server, which collects data and clients that send data to the server. On the server is installed program Apache in which runs utility script for collecting and evaluating data, written in PHP. Data are stored in MySQL relational database and can be clearly displayed. The client consists of microcontroller ATmega16, which evaluates data from sensors. These data are then transferred via Ethernet using the HTTP protocol through the module XPort.
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T-Speed Test for UMTS System
Šmíd, Jan ; Kejík, Petr (referee) ; Hanus, Stanislav (advisor)
The thesis deals with adding new parts to program for measuring data rates in mobile communications. New program parts are used for analyzing web pages and HTTP protocol, recieving position data from GPS reciever and for creating automated measuring sequences.
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Control and monitoring unit for optical link station
Ovčáček, Martin ; Kolka, Zdeněk (referee) ; Prokeš, Aleš (advisor)
The aim of Master's thesis "Control and monitoring unit for optical link station" is design of hardware and software of unit, which provides remote control and data transfer through Internet. It is required monitoring and setting analog parameters of optical link station by web service. It includes description of Ethernet and net protocols. The core of unit are microcontroller C8051F120 and ethernet controller CP2200 made by Silicon Laboratories.
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Server monitoring component
Boček, Jaromír ; Heriban, Pavel (referee) ; Roupec, Jan (advisor)
This Bachelor thesis deals with the development of a universal server monitoring component for collecting data from various servers. This component meets the requirements for easy installation, setup and activation of the specified server. The monitored unit releases information that the monitored server is active and completely functioning, in particular, information on CPU utilization, state of disk utilization, and state of all logged users. The presented multiplatform concept puts emphasis on the most common platforms, such as Linux and Windows. In addition, transfer of acquired data through the Internet obstacles in the form of firewall configurations and other security technologies has been solved within this work.
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Real-time Crane Control via PC
Arm, J.
In this paper, creation of SCADA system, which controls and monitors model of gantry crane in real time, is described. This crane will be controlled via process station communicating with PC via Modbus TCP protocol. Moreover, HTTP server will be created to monitor crane state over intranet. On this work, the difference between real-time and fast execution will be described and it will be shown on the built system that the fast execution system can behave like a real-time system under specific conditions.
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History and development of session state in the HTTP protocol
Nezdara, Vojtěch ; Pinkas, Otakar (advisor) ; Vojíř, Stanislav (referee)
The main goal of this bachelor thesis is to analyze new ways to store session state in the stateless HTTP protocol. Thesis including a description of the development of the HTTP protocol itself. Concerning the session state, the emphasis is on the characteristics of commonly used methods, and new methods that come with the HTML5 specification. The RFC documents and the specifications for new technology published by their creators were used as the main source of information. In the next chapter, the thesis includes a practical test of the new transport protocol SPDY, demonstrating its higher speed. Finally, as a part of this thesis, a simple web chat application based on new technologies using scripting languages PHP and JavaScript, namely WebSocket, Web Storage and IndexedDB, was created. The methods described in this work can serve as a guide to create similar web applications using new technology for less experienced developers. Topic of this thesis was mainly based on the evolution of web sites and the growing importance of local storage on the client side.
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