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Člověk a svět práce
Vraný, Boleslav ; Opatrný, Aleš (vedoucí práce) ; Dřímal, Ludvík (oponent)
1 Bachelor thesis "Humans and the World of Work" examines the relation of spiritual life and daily work, as well as the possibility of connecting them. It understands "work" as an employment or entrepreneurial activity in contemporary professions not limited to the caring professions. It starts by formulating a hypothesis that such a connection is possible which is consists in the development of virtues, viewing work as participation in God's work of creation and redemption and as participation on the mission of Christ as Priest, Prophet and King. It compares this hypothesis with the teachings of Gaudium et Spes, Pastoral Constitution on the Church in the Modern World of the Second Vatican Council, the social encyclicals, and the Compendium of the Social Doctrine of the Church. In the doing so, it also documents the development of their understanding of work during time. In concludes that the hypothesis is confirmed by them a goes on to describe several common types of connecting spiritual life and work, as found in literature. It also dis- cusses the relation of the theological and cardinal virtues to spirituality of work.
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Measurement of amplitude and phase of ultrashort optical pulses by using nonlinear processes in optical fibres
Vraný, Boleslav ; Kaňka, Jiří (vedoucí práce) ; Karásek, Miroslav (oponent) ; Boháč, Leoš (oponent)
I confirm that I worked out this doctoral thesis independently and that I quoted all the literature used. Prohlašuji, že jsem tuto dizertační práci vypracoval samostatně a že jsem uvedl veš- kerou použitou literaturu. V Praze dne 21. 6. 2010 Abstract The thesis deals with the Frequency-Resolved Optical Gating (FROG) method of mea- suring ultrashort optical pulses. As a nonlinear process involved in the method we used cross-phase modulation in a microstructured optical fiber. The FROG device made of fi- ber pigtailed components fitted well the needs of our fiber optical laboratory. The output of the measurement differs significantly from FROG methods that use other nonlinear processes like second harmonic generation. For our FROG, the standard algorithms for reconstruction of the complex envelope from measured spectrogram failed. We therefore used a more robust genetic algorithm (GA) for the reconstruction. GA has several pa- rameters that affect its runs and we explored the influence of these parameters on the success of reconstruction of a number of test pulses and found the optimal set of these parameters. In this work, we present a general discussion of the FROG method and the standard reconstruction algorithms, the experimental setup we used, a discussion of the genetic algorithm, the technical details of our...
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Measurement of short pulses using fiber frequency-resolved optical fating
Vraný, Boleslav ; Honzátko, Pavel ; Kaňka, Jiří
We have reviewed and implemented the method of frequency-resolved optical gating. We discuss the fiber FROG experimental setup and several algorithms for pulse retrieval. These include the basic algorithm, the generalized projections and the genetic algorithm. We have developed new variants of the pulse retrieval algorithms by combining the generalized projections and the genetic algorithm and are experimenting with them to get optimal performance.
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