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Automatic detection of ischemia in ECG
Noremberczyk, Adam ; Potočňák, Tomáš (referee) ; Ronzhina, Marina (advisor)
This thesis discusses the utilization of the artificial neural networks (ANN) for detection of coronary artery disease (CAD) in frequency area. The first part of this thesis is orientated towards the theoretical knowledge. Describes the issue of ECG pathological changes. ECQ are converted to frequency area. Described statistical methods and methods for automatic detection of CAD and MI. Explained the issue of the perceptron and ANN. The second deals with use of Neural Network Toolbox MATLAB®. This part focuses on counting and finding suitable parameters and making connection of band. At the end of the thesis UNS is used to detect ischemic parameters and the results are discussed. Average values for the best settings are 100% accuracy.
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VoIP in Jabber Client
Kulička, Vojtěch ; Veselý, Vladimír (referee) ; Mlích, Jozef (advisor)
Práce se zabývá možnostmi implementace VoIP do existujícího XMPP programu se sdílenou tabulí. Analyzuje možnosti využití současných technologií pro podporu VoIP. Cílem je nahrazení stávajících komunikačních knihoven klienta za telepathy. Dále také přidání VoIP.
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Support for Whiteboard in Kopete
Pohl, Lukáš ; Očenášek, Pavel (referee) ; Mlích, Jozef (advisor)
The aim of this master thesis is to design and create the whiteboard application which allows to draw and share multimedia content in realtime using protocol XMPP between two users in the network environment. Application is a part of the open source IM client Kopete in KDE and operation system Linux.
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Robust Control of AC Electrical Drives
Pohl, Lukáš ; Prokop, Roman (referee) ; Brandštetter, Pavel (referee) ; Blaha, Petr (advisor)
The purpose of this disertation is to introduce and demonstrate a new approach to robust control of AC electrical drives. The proposed robust control method takes advantage of a nonlinear nature of AC motor d-q equations to construct self-scheduled LPV stator current controller. The benefit of this approach is in maitaining the robustness without any increase in conservatism of the H infinity controller. The resulting controller achieves fast and consistent response in the entire range of operating speeds. Rejection of the load torque disturbance is achieved with nonparametric H infinity speed controller in the outter loop of the cascade structure. The combination of LPV current controller and H infinity speed controller was verified on real-time simulation platform dSPACE ds1103. Simulation results for both types of AC motors (PMSM and IM) shows that the proposed solution is not only robust with respect to operating speeds but also impervious to wide range of load disturbance values.
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Server Component of a Web Application for Instant Messaging with AJAX
Švirga, Václav ; Burget, Radek (referee) ; Bartík, Vladimír (advisor)
The subject of this thesis is to create a server component to an instant messaging web application. The theoretical part of the thesis describes common instant messaging services and technologies used for building web applications. The practical part of the thesis focuses on the design of the application architecture, the implementation and the connections between the components of the application via the API. The conclusion of the thesis covers evaluation of the application.
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XMPP protocol Jabber features and its utilization for multimedia transmission
Havlena, Petr ; Průša, Zdeněk (referee) ; Šmirg, Ondřej (advisor)
Master’s thesis is trying to create opensource IM application for communication in Jabber network. In nowadays it is getting more and more popularity as at providers, so mainly at end users. In first half of thesis are explained basics of whole issues and in second half is described resulting application, which has been created by using of object oriented programming language Java. Java is very extended between programmers for her simplicity and great support. Thanks this is available a many external libraries and extensions. Application has been written on Smack library in version 3.04 and VoIP module on JMF (Java Media Framework). Graphic interface has been created by using of standard Java visual components (javax.swing).
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ICQ Client for PDA Devices
Gregorovič, Jiří ; Šimek, Václav (referee) ; Pajgrt, Michal (advisor)
This work deals with Windows Mobile platform and it's development tools. This work documents implementation of ICQ communication protocol in form of shared library, proposal and implementation of a client for created library. Implementation is made in development environment Visual Studio 2008 in a Visual C#.Net language.
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Analysis Tool for the Network Traffic Content
Mareš, Martin ; Ryšavý, Ondřej (referee) ; Veselý, Vladimír (advisor)
This paper is about designing and implementing a tool for analysis of the network traffic content. Work is part of the SEC6NET project at FIT - Brno University of Technology. The paper describes specific requirement for such a tool and existing solutions. The main part is devoted to design and implementation of new tool - Netfox Detective. Several problems are handled: data persistence, performance, extensibility, etc. The last part of work describes possibilities and features of the Netfox Detective. The work emphasises extensibility and future development of a created tool.
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Communication between devices using Bluetooth technology
Gasior, Ondřej ; Botta, Miroslav (referee) ; Lattenberg, Ivo (advisor)
This thesis focuses on communication between mobile devices running the Android operating system and the PCs running MS Windows via Bluetooth. The main task is to create an applications which creates network, representing virtual room, for the exchange of text messages (ie. instant messaging). This involves creating a platform independent protocol and consequently its actual implementation. At first, Bluetooth technology and its principles are discused in detail, then both supported platforms are introduced, including their programming languages. The conclusion focuses on designed protocol and the analysis of both application with their source code using including sample of format of sending messages.
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Automatic detection of ischemia in ECG using artificial neural network
Noremberczyk, Adam ; Smital, Lukáš (referee) ; Ronzhina, Marina (advisor)
This thesis discusses the utilization of the artificial neural networks (ANN) as electrocardiography (ECG) classifiers of coronary artery disease (CAD) and myocardial infarction (MI) in ECG signal. The first part of this thesis is orientated towards the theoretical knowledge and describes the issue of ECG pathological changes, methods for automatic detection of CAD and MI and the issue of the perceptron and ANN. The second deals with use of Neural Network Toolbox MATLAB® version R2010a. In graphical user interface development environment (Guide) is created application that is used to compare the success of automatic detection of ischemia in ECG using ANN. It allows the user to set various parameter settings UNS and display ECG waveforms.
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