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Time Synchronization in Computer Networks
Matoušek, Denis ; Kořenek, Jan (referee) ; Martínek, Tomáš (advisor)
The master's thesis deals with design of a solution for time synchronization in computer networks that is a crucial problem of many network applications. Based on analysis of protocols for time synchronization, PTP protocol was chosen as an appropriate candidate. The thesis describes the implementation of the design for a special network interface card and demonstrates features of the solution in several tests. A part of the solution processing precise timestamps was implemented in FPGA chip on the network card while PTP messages are processed in a software application. Values of configurable parameters of the application were determined based on analysis of the network card properties and results of particular tests. It was achieved accuracy in order of tens of nanoseconds.
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Statistic evaluation of phylogeny of biological sequences
Zembol, Filip ; Provazník, Ivo (referee) ; Škutková, Helena (advisor)
The topic of my diploma thesis is the statistical evaluation of biological sequences with the help of phylogenic trees. In the theoretical part we will create a literary recherche of estimation methodology concerning the course of phylogeny on the basis of the similarity of biological sequences (DNA and proteins) and we will focus on the inaccuracies of the estimation, their causes and the possibilities of their elimination. Afterwards, we will compare the methods for the statistical evaluation of the correctness of the course of phylogeny. In the practical part of the thesis we will suggest algorithms that will be used for testing the correctness of the phylogenic trees on the basis of bootstrapping, jackknifing, OTU jackknifing and PTP test which are able to the capture phylogenic tree with the method neighbor joining from the biological sequences in FASTA code. It is also possible to change the distance model and the substitution matrix. To be able to use these algorithms for the statistical support of phylogenic trees we have to verify their right function. This verification will be evaluated on the theoretical sequences of the amino acids. For the verification of the correct function of the algorithms, we will carry out single statistical tests on real 10 sequences of mammalian ubiquitin. These results will be analysed and appropriately discussed.
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Time Synchronization of PC in Measurement and Control System
Vořechovský, Karel ; Klusáček, Stanislav (referee) ; Keprt, Jiří (advisor)
The aim of this thesis is to measure the time synchronization precision of chosen methods. Therefor was chosen the synchronization method between two nodes using a couple of GPS recievers and a synchronizatian method through the ethernet using the precision time protocol. The precision of synchronization methods was measured by generating and timestamping an external measurement pulse wired to both nodes. By comparing the timastamps of both nodes was aquired the jitter between them. In addition was measured the timedrift between two clock counters for precise setup of the synchronization interval.
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Wireless Communication in Fire Sport
Pelka, Tomáš ; Mrázek, Vojtěch (referee) ; Vašíček, Zdeněk (advisor)
This work describes the design of wireless timer for fire sport disciplines. Its aim is to replace long wires with wireless communication while preserving equal or better reliability. Important part is the need for clock synchronization between wireless modules. Related topic is selection of suitable synchronization algorithm and communication protocol. The proposed system was realized in form of prototype using Texas Instruments's development platform LaunchPad EXP 430 FR4133 and wireless modules with Texas Instruments's chip CC1101. Parameters of designed system (especially the accuracy of time synchronization and measurement) were verified in laboratory.
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Nosema bombycis as a model organism for polar tube study.
Satrapová, Alexandra ; Petrů, Markéta (advisor) ; Trdá, Lucie (referee)
Microsporidia is a group of obligatory intracellular parasites with a unique invasion mechanism. One of the highly specialized invasion structures is the polar tube which is an example of a biological nanotube the study of which could bring usable knowledge in biotechnology. The thesis is a literary overeview which deals with the structure of microsporidian spores and presents N. bombycis as a suitable representative for the study of the infectious apparatus. In more detail, it summarizes the background to the structure of the polar tube and wall of N. bombycis spore.
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Time Synchronization in Computer Networks
Matoušek, Denis ; Kořenek, Jan (referee) ; Martínek, Tomáš (advisor)
The master's thesis deals with design of a solution for time synchronization in computer networks that is a crucial problem of many network applications. Based on analysis of protocols for time synchronization, PTP protocol was chosen as an appropriate candidate. The thesis describes the implementation of the design for a special network interface card and demonstrates features of the solution in several tests. A part of the solution processing precise timestamps was implemented in FPGA chip on the network card while PTP messages are processed in a software application. Values of configurable parameters of the application were determined based on analysis of the network card properties and results of particular tests. It was achieved accuracy in order of tens of nanoseconds.
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|
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Wireless Communication in Fire Sport
Pelka, Tomáš ; Mrázek, Vojtěch (referee) ; Vašíček, Zdeněk (advisor)
This work describes the design of wireless timer for fire sport disciplines. Its aim is to replace long wires with wireless communication while preserving equal or better reliability. Important part is the need for clock synchronization between wireless modules. Related topic is selection of suitable synchronization algorithm and communication protocol. The proposed system was realized in form of prototype using Texas Instruments's development platform LaunchPad EXP 430 FR4133 and wireless modules with Texas Instruments's chip CC1101. Parameters of designed system (especially the accuracy of time synchronization and measurement) were verified in laboratory.
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Time Synchronization of PC in Measurement and Control System
Vořechovský, Karel ; Klusáček, Stanislav (referee) ; Keprt, Jiří (advisor)
The aim of this thesis is to measure the time synchronization precision of chosen methods. Therefor was chosen the synchronization method between two nodes using a couple of GPS recievers and a synchronizatian method through the ethernet using the precision time protocol. The precision of synchronization methods was measured by generating and timestamping an external measurement pulse wired to both nodes. By comparing the timastamps of both nodes was aquired the jitter between them. In addition was measured the timedrift between two clock counters for precise setup of the synchronization interval.
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