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Processing of Uncertain Information in Databases
Morávek, Petr ; Dvořák, Jiří (referee) ; Šeda, Miloš (advisor)
The following diploma thesis focuses on processing of uncertain information in databases. Uncertain information represents vague customer requests during laptop choice in classic shop purchasing. Effort of the work is to develop a modern e-shop application selling laptops, which is based on expert fuzzy system helping customers to choose a laptop without knowledge of technical specifications and current trends.
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Routing protocols metric determination in wireless sensor networks
Dušek, Martin ; Šimek, Milan (referee) ; Morávek, Patrik (advisor)
This bachelor’s thesis deals with wireless sensor networks (WSNs) in terms of routing protocols and metrics. There is described common view on these networks and their comparison with IP networks. In addition, some types of protocols, used in WSNs, are described and representatives of each type are included. There is also considered influence of metrics on a route selection and presented two methods of calculation. In conclusion, an application, that simulates the use of each type of metrics for path search and displays the differently evaluated paths, is designed.
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The Application of Fuzzy Logic for Rating of Suppliers for the Firm
Kučerka, Daniel ; Morávek, Patrik (referee) ; Dostál, Petr (advisor)
This diploma thesis deals with the process of company supplier selection in the florist Dagmar. Several methods solving similar problems with different tools have been described. The group of potential suppliers has been introduced and their most important features summarized for the purpose of this work. The main part is focused on the evaluation of the suppliers according to specified metrics by the method using fuzzy logic and Matlab simulation tool. The results of this work leads to suggestion of the supplier most suitable for florist and its business strategy.
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The Small Family Business Information Strategy
Morávek, Patrik ; Hurtová, Jitka (referee) ; Kříž, Jiří (advisor)
This diploma thesis is focused on the information strategy of the small family business The Faltys´ bookstore. There are discussed internal and external conditions that have a relevant influence on a proposal of the information strategy and elaborated proposal of the information strategy that will serve as an important base for management decisions and plans.
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Application for Zigbee Device Configuration
Brož, Kamil ; Morávek, Patrik (referee) ; Šimek, Milan (advisor)
The diploma thesis includes the ZigBee networks and compares them with other PAN IEEE 802.15.4 networks. It describes the formation of ZigBee networks. It describes physical, MAC, network and application layer in the form of Bitcloud. Thesis includes practical implementation in the form of ZigBee application BeeCon which allows set network parameters on Iris modules.
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Energy demands of localization algorithms
Maňák, Jiří ; Červenka, Vladimír (referee) ; Morávek, Patrik (advisor)
This masters thesis deals with technics of localization for wireless senzor networks with a focus on anchor free location algorithm by authors G. Jianquan and Z. Wei. It also describes the available simulations frameworks based on OMNeT++ platform and implementation of the anchor free algorithm in the simulation program Castalia. Furthermore, it deals with the energy demands of this algorithm based on results of simulations that were done for the communication unit IRIS.
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Detection of Farthest Node in Wireless Sensor Networks
Pfudl, Tomáš ; Morávek, Patrik (referee) ; Šimek, Milan (advisor)
Master’s thesis in the first part focuses on the effectiveness of communication in the selection of reference nodes during the anchor-free localization in WSN. In this part two anchor-free localization algorithms AFL and CRP are explored. Knowledge learned on the selection of reference nodes and communication complexities of these algorithms are used in the second part. The second part is aimed at eliminating weaknesses in communication and subsequently proposed a new algorithm for selection of references. The principle of the newly proposed algorithm CASRU (Centralized Algorithm for Selection of Reference Nodes) is based on the principle of CRP. CASRU algorithm builds logical tree structure and then filters the communication through it. New algorithm achieves much greater success in the selection in randomly distributed networks while reducing the amount of communication load.
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Proposal of wireless sensor network for indoor monitoring of people and objects
Záděra, Zdeněk ; Mráz, Ľubomír (referee) ; Morávek, Patrik (advisor)
This thesis describes the design of wireless sensor network (WSN) for monitoring of people and objects in a building. The work deals with issues of localization and tracking in sensor networks and algorithm implementation to sensor nodes. It also contains a description of the aplication requirements. These requirements form the basis for the proposal. The hardware part of the network consists of sensor nodes IRIS from Crossbow company. The work describes the properties of these nodes. Next part deals with of propagation model and design of the localization algorithm. The paper also describes the communication in the network. The thesis also includes a practical realization of the proposed network, the localization system and its testing. In the work is included a CD with the building schematic in AutoCAD and with source code of created applications.
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Modern cryptanalysis
Petřík, Tomáš ; Morávek, Patrik (referee) ; Martinásek, Zdeněk (advisor)
Issues of this thesis are focused on side-channel cryptanalysis. Particularly attention is paid to differential power analysis, when is simulated an attack on the cryptographic module for different conditions and for different structural features of this module. As the cryptographic module is used a PIC microcontroller, which is operating with AES symmetric encryption algorithm. For this purpose, a design of experimental printed circuit board was created. Then, this PCB was equipped only with the necessary components for the function of the cryptographic module. Cryptanalysis is aimed on current consumption of crypto module that is caused by execution of AddRoundKey instructions. Power consumption of PIC microcontroller is measured in depending on the size of power supply voltage, size of serial resistor, size of bypass capacitor, and this thesis also examines the influence of ambient temperature on power consumption of PIC. The measured values are graphically presented and then discussed.
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Reduction of position estimate error in incremental localization techniques
Pekárek, Jan ; Morávek, Patrik (referee) ; Šimek, Milan (advisor)
The diploma thesis describes localization of communications nodes in the Wireless Sensor Networks. This thesis contains basic algorithms for localization sensor's nodes as are Map-Growing and ABC (Assumption Based Coordinates). Then is chosen acceptable algorithm for simulation on random sensor networks. For research these problems is used software MATLAB. For a given the university's environment are researched appropriate algorithms with possible optimalization algorithms. The result of diploma thesis is a localization algorithm with initial multilateration system and this system is located in the center sensor's network. As algorithm IMap4-Growing (Improved Map4-Growing) with optimization, which uses optimization distance between sensors and radio range. In the diploma thesis is simulated optimalization algorithm Mass-Spring.
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