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Web Application for NS2 Training
Pavlosek, Václav ; Koutný, Martin (referee) ; Šimek, Milan (advisor)
There is information to my master's thesis which is called “Web application for NS2 training”. This application works after installation and its source codes are saved on applied CD. It is said about implement Network Simulator 2. It helps to realize simulation of nets and then author inserts information about them into web application. Registered web's visitor has possibility to insert project into application. The project contents information about simulation created in NS2. Web application can also visible detail of possible project which is approved of administrator. Then the visitor can sort projects, search entered expression or connect his contribution to discussion forum. Administrator can approve users projects in his part of application. It makes available for the others. He can also delete them from database. Theory about technologies which are used for implementation of this application. It is talked about web Apache server, database MySQL server and programmable PHP language. There is also mentioned information about security of web application included possible attacks on applications and their database. It is presented proposal of database which creates core of application. This proposal is depended on application requirements. Next chapters give to reader whole image about functionality of application. There are mentioned samples of final graphical image of application. This document also provides the shows of source codes for creating database tables.
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Distance Estimation in Wireless Ad-hoc Network
Botta, Miroslav ; Mráz, Ľubomír (referee) ; Šimek, Milan (advisor)
The work deals with processing of radio received signal strength in IEEE 802.15.4 which communicates in 2.4 GHz ISM band. The signal is processed by the three approximation methods. They are tested for their effectiveness for measuring in different radio environments. Furthermore, the work deals with calculation of the most efficient coefficients for distance calculating by radio transmission fucntions. It defines the issues of such solutions on practical examples. The work also deals with the experimental algorithm for implementing dynamic calibration of the coefficients. It describes the design, processing and verification of this system in practice.
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Library for database access in PHP language
Ondra, Martin ; Šimek, Milan (referee) ; Kacálek, Jan (advisor)
Bachelor thesis describes modern website scripting language PHP, MySQL database and very closely describes functionality of Model-View-Controller design pattern, which can be used in programming database-oriented aplications. On the basis of described theoretics findings is build a library in PHP and MySQL, which matches Model from Model-View-Controller design pattern.
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SELinux application for Linux server security
Jirka, Michal ; Pelka, Tomáš (referee) ; Šimek, Milan (advisor)
This work is engaged in access control mechanism in GNU/Linux operating systems. At first discretionary and mandatory access control are compared and examine basic technologies based on mandatory access control. More closely is focused on project SELinux, whose generation of new rules is explained. Within the thesis is made application for logging evaluation and for writing new Type Enforcement rules.
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Communication node Localization Techniques in Wireless Sensor Networks
Pekárek, Jan ; Kubánková, Anna (referee) ; Šimek, Milan (advisor)
The bachelor´s thesis describes wireless sensor networks and communication protocols. Below this thesis contains basic algorithms for localization techniques communication nodes in wireless sensor networks. These basic algorithms are classified by methods. The bachelor´s thesis values algorithms by their advantages or disadvantages for usage in the suggested localization algorithm. In this thesis is solved a new simulating programme J-SIM, peruse separate package that are useful in the wireles sensor networks. In J-SIM is created a sensor network and models separate communication nodes. Models communication nodes are created separately for sensor nodes and target nodes. For localization algorithm is created program in the programming language Java which run results from simulating programme J-SIM. Programme J-SIM, simulation created by virtue of Tcl script and final programme are applied to CD.
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Wireless sensor system
Kotouček, Filip ; Šimek, Milan (referee) ; Botta, Miroslav (advisor)
Bachelor thesis describes the design of wireless sensor network composed of modules deRFmega128 and Raspberry Pi. It Contains a description of the created protocol for wireless communication and protocol for serial interface on the gateway. It also describes web interface for general management of network. The work includes analysis of nodes energy performance and measurement of solar panels as a potential secondary sources of energy.
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Multicast Communication in Wireless Sensor Networks
Valouch, Jaromír ; Morávek, Patrik (referee) ; Šimek, Milan (advisor)
This master’s thesis describes energy consumption in wireless sensor networks. It is focused on energy consumption during communication and it provides rules to save energy during this operation. There are terms like wireless sensor networks, multicast, ad-hoc networks, routing protocols, multicast routing protocols, IGMP protocol, AODV routing protocol, MAODV routing protocol explained in this thesis. The main difference between multicast and unicast communication is analyzed as well. In the end of this thesis there are results of simulation small wireless sensor network from network simulator2. The simulations were focused on energy consumption during communication. The length of packet was changed during communication between two nodes in this simulation. In wireless sensors network nodes play a dual role as both data sender and data router therefore there were made research into energy consumption senders, routers, receivers in wireless sensor network during communication.
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