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Capability of body measurement on an in-line 3D measuring device
Čada, Michal ; Jankových, Róbert (referee) ; Šrámek, Jan (advisor)
By developing optical measurement technologies of shapes and elements, it is now possible to measure the carbody directly in the production flow of the welding company's line for the production of cars, the so-called „In-line measurement“. When deploying this control process, you also need to process the amount of data measured using the standard described procedure for process control. The thesis presents a proposal for the introduction and control of the dimensional inspection process of the final product of the welded body.
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Cross section measurement in reactor spectrum: 55Mn(n,2n), 90Zr(n,2n), 127I(n,2n)
Burianová, Nicola ; Košťál, Michal (advisor) ; Krtička, Milan (referee)
This diploma thesis deals with the validation of spectral average cross-sections (SACS) of 55 Mn(n,2n)54 Mn, 90 Zr(n,2n)89 Zr, 127 I(n,2n)126 I reactions in well-defined LR-0 reactor spectrum. The measurement of SACS for selected reactions is of high interest because they are used for the practical reactor dosimetry. Various experiments for description of neutron field in reactor and detector characterization, which are necessary for validation, are described. The spectral average cross-sections are derived from Net Peak Areas of irradiated samples measured using a semiconductor high purity germanium detector. Obtained result were compared with MCNP6 calculations using ENDF/B-VII.0, ENDF/B-VII.1, JEFF-3.1, JEFF-3.2, JENDL-3.3, JENDL-4, ROSFOND-2010, CENDL-3.1 and IRDFF nuclear data libraries. Notable discrepancies were found in 90 Zr(n,2n)89 Zr and 127 I(n,2n)126 I reactions. This thesis also contains a theoretical basis for the interaction of neutrons with matter.
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Statistical evaluation of dimensional setting the car for 3D measurement
Čada, Michal ; Jankových, Róbert (referee) ; Šrámek, Jan (advisor)
This bachelor´s thesis proposes a dimensional calibration improvement concept for a newly produced car. Before the dimensional calibration itself, a car must be fit in place – aligned into the main graphical coordinate system. Prevalent method of geometric levelling (3-2-1) upon reference points of the chassis does not meet requirements of the contemporary cars, whose support frames blocks accessibility of these points. Proposed alignment method uses advanced laser measuring systems and software capable of 3D scan processing. Statistical evaluation of measured control variables on the car body this bachelor´s thesis proposes minimal allowance limit, for which this method is possible to viable.
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Selected problems of the czech media and journalistic profession on the exemple of the intrusion of fictitious events and news satire into official news
Seidlová, Tereza ; Škodová, Markéta (advisor) ; Bednařík, Petr (referee)
This diploma thesis focuses on the problematic aspects of the journalistic profession nowadays, namely on the example of the penetration of the mystifying jokes to the mainstream media. In three specific cases where the authors of the mystifying pranks managed to penetrate the media, the work illustrates the most common mistakes journalists can make and focuses on trends, which stand for these tendencies. Part of this work is the analysis of the mystifying contents that appeared on jokes websites, on Facebook or in the context of interpersonal communication, and subsequent analysis of the media in which these mystifying reports appeared in the form of the real events. The interviews with both stakeholders - authors of the hoax contents and media representatives - will subsequently serve for the illustration of the overall issue and the final conclusion.
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A tool for validating electronic signatures on PDF documents
Selement, Pavel ; Peterka, Jiří (advisor) ; Kruliš, Martin (referee)
The subject of this graduation thesis is to study internal electronic signatures in PDF documents. The thesis introduces general principles of electronic signatures, deals with the internal structure of PDF documents including the connection of electronic signatures and describes the process of verifying an electronic signature. An integral part of this thesis is an implementation of an application, which performs verification of electronic signatures in a PDF document. The aim of this application is to verify the digital signature embedded in a PDF document according to the current legislation of the Czech Republic, while allowing users to change extensively the rules for evaluating the validity of the signature. Powered by TCPDF (www.tcpdf.org)
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