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Simulator of Fire Spreading Based on Cellular Automata
Daniš, Daniel ; Samek, Jan (referee) ; Žák, Jakub (advisor)
This bachelor's thesis deals with the design and implementation of forest fire simulator based on cellular automaton. Text of the thesis is divided into theoretical and practical part. In theoretical part the reader will be acknowledged with the domain of cellular automaton. Consequently, the model for the prediction of forest fire behavior will be described and the calculations for various parameters and particular coefficients of this model will be presented. Practical part of the thesis contains description of simulator architecture as well as key aspects of its implementation. Moreover, the emphasis is being placed on experiments with simulator and consecutive testing of its validity. The results of the thesis are: simulator, graphical application usable for the purposes of forest fire spreading prediction in different conditions.
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Tools and Techniques for Creating Mobile Applications
Čtvrtníček, Dušan ; Žák, Jakub (referee) ; Samek, Jan (advisor)
This bachelor thesis describes and compares the possibilities for development of mobile applications for various mobile operating systems (Android, Windows Phone etc.). The thesis also describes the tools available to create mobile applications. Based on the created application, there were compared and evaluated two developments - native and hybrid.
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Agents in Wireless Sensor Networks
Melo, Jakub ; Žák, Jakub (referee) ; Zbořil, František (advisor)
This thesis deals with the agent platforms for wireless sensor networks. Wireless sensor networks together with the software and hardware tools used for their programming are introduced at the beginning of the thesis. The following chapter is devoted to the agents and their possible usage in wireless sensor networks. Two agent platforms Agilla and WSageNt are presented in the rest of the thesis. The end of the thesis presents the main differences between both platforms.
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Auto-Generation of Examples for Assembly Languages Course
Tomeček, Aleš ; Žák, Jakub (referee) ; Samek, Jan (advisor)
{This study analyses approaches to generation of unique assignments for teaching purposes and their potential usefulness for computer labs of assemblers course. Based on that research we design and implement system for creating pseudo unique assignments. As part of the work is also included web application for use directly during course and other tools aiding further work with system itself.
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Wireless Sensor Networks Based on Mobile Devices
Dorazil, Jan ; Žák, Jakub (referee) ; Samek, Jan (advisor)
This master's thesis deals with the idea of using mobile devices as sensor nodes in wireless sensor network. Focused mostly on Android platform, we explore possibilities of wireless communication, and describe various types of sensors on mobile devices. We design and implement wireless sensor network based on mobile devices running Android operating system. The network performs real-time capturing of data from all sensors available and optionally from GPS. All measurements are visualized at the base station, which is Java Standard Edition desktop application. Wi-Fi, Bluetooth or even cellular internet can be used for communication within the network. Nodes can be remotely configured via SMS messages.
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Analysis of Genetic Algorithm
Snášelová, Petra ; Žák, Jakub (referee) ; Zbořil, František (advisor)
This thesis deals with analysis of genetic algorithms. It is focused on various approaches to creation of new populations. A comparison between basic principles of operation of genetic algorithms and processes occurring in living organisms is drawn here. Some methods of application of particular steps of genetic algorithms are introduced and a suitability of the methods to certain types of problems is considered. The main goal in the thesis is to apply genetic algorithms in solving three types of optimization problems, namely the solution of functions with a single major extreme, functions with flat (slight) extreme and also functions with many local extremes.
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Artificial Life Modelling
Žák, Jakub ; Kunovský, Jiří (referee) ; Zbořil, František (advisor)
This paper deals with artificial life simulation by means of artificial BDI agents.This work aims to create a virtual world, to which agents are put. In system, there is 5 kinds of agents. Agent father, who rules and synchronizes the system. Next are agent worker, salesman, cop and thief. Model of the system is created by use of Prometheus methodology. The system is programed in the Jason language, which is implementation of AgentSpeak language.
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Design, administration and analysis of SSM multicast network
Žák, Jakub ; Pelka, Tomáš (referee) ; Šimek, Milan (advisor)
My thesis deals with the Multicast transfer in IP networks and it describes distribution technology of packets with special focus on Multicast technology. The thesis is devoted to the principles of Multicast including the description of scheme, protocol Multicast distribution, registration in the Multicast groups and finally the advantages and disadvantages of the Multicast transfer. Further in the thesis is described in details the Source Specific Multicast technology (SSM) that comes from multicast. There is a description how this technology Works and its implementation in the network equipment including the user side. This part of the thesis also deals with so called Distribution Trees that are used as multicast distribution via the IP networks like for example Internet. Based on the knowledge of the Multicast was created the network to spread the multimedia data with support of Multicast and SSM. The network is designed based on the Cisco system equipment as is: Cisco Content Engine 566, Cisco IP/TV broadcast server and router 1812. This multimedia network provides many services including the live TV broadcast and video channels. In this network using the multicast distribution of packets was done an analysis by protocol analyzer unit WIreshark and Finisar. This protocol analyzer unit allows us to compare the efficiency of multimedia data transfer between the Unicast, Multicast and SSM.
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The influence of hormonal treatment on succes of induced controlled spawning of Weather loach (Misgurnus fossilis)
ŽÁK, Jakub
The Weather loach (Misgurnus fossilis) is one of the fastest disappearing species in Europe. This is the reason for finding a solution for support of natural populations. The possible solution is artificial stripping under controlled conditions and stocking of offspring into appropriate habitats. Carp pituitary extract (CPE) has been used for controlled stimulation of oocyte maturation until now. The usage of CPE in fishery is decreasing because of health risks. The aim of this thesis was the comparison of different hormonal stimulants on selected aspects of artificial spawning of Weather loach. Stimulants were injected intramusculatury in two doses. Females were taken from experimental pond in Vodňany FROV (individual body weight 31 - 59 g). Temperature was kept at 17.9 +/- 0.13 °C. The lowest percentage of ovulating females (80 %) was achieved after stimulation by Dagin (dose: one ampula per 40 kg). With use of the other stimulants, all females were ovulating. The highest relative amount of stripped eggs in relation to pre-stripping weight of female was reached after application of Ovaprim in dose 1 ml×kg-1 (170 +/- 19 ks×g-1). The smallest amount of stripped eggs was obtained after application of Pregnyl in dose 1500 IU×kg-1 (85 +/- 38 ks×g-1), Pregnyl in dose 3000 IU (97 +/- 24 ks×g-1) Chorulon 1500 IU (86 +/- 32 ks×g-1) respectively. The shortest latency interval was observed after stimulation by CPE (18 hours) and by Ovaprim in dose 2 ml×kg-1 (23 hours) respectively. Interval of latency was longer than 31 hours in females stimulated with lower doses (1500 IU) of a stimulant without dopaminergic inhibitor. The best synchronization of ovulation was observed after stimulation by CPE (1 hour) and Chorulon in dose 3000 IU and 1500 IU (2 hours) respectively. The egg of weather loach contained 53 % of carbon, 21 % of oxygen, 12 % of nitrogen, 8 % of hydrogen and 0.3 % of sulfur. Chemical composition was significantly different only in oxygen concentration between females stimulated by CPE and 2 ml×kg-1 Ovaprim. In general, worse results of artifficial spawning aspects were observed after stimulation by stimulants without dopaminergic inhibitor. The results in this thesis show which accessible commercial hormonal stimulants used in stimulation of other fish species are useable for controlled reproduction of weather loach. Ovopel and Ovaprim can be recommended for stimuation of ovulation or spermiation of weather loach.
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Electronic Books
Puharič, Petr ; Pokorný, Pavel (advisor) ; Žák, Jakub (referee)
The main aim of this bachelor thesis is to give an overview of issues concerned with electronic books. It deals with the history of e-books and contemporary situation and describes their advantages, disadvantages and prediction of their future development. This thesis also provides comparison and description of various devices used for reading, price analysis and compares saleability of e-books in comparison to music.
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