National Repository of Grey Literature 34 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Hodnocení vybraných území Tišnovské kotliny metodikou „geosites/geomorphosites“, srovnání s hodnocením lokality Babí lom
Urban, František
The thesis deals with the assessment of significant geomorphological sites in the area of the Tišnov Basin in the Boskovice Furrow. In the high geodiversity area of interest, nine geomorphological sites are identified and described in detail. The methodology of geomorphosites is used for their assessment. The selected sites include parts of the well-known hill of Květnice as well as the elevations strongly affected by anthropogenic activity. The assessment results are compared with the localities around the nearby hill of Babí lom. Based on the assessment of individual sites, the entire area of interest is then assessed and appropriate measures in use, management and protection of abiotic nature are proposed for it.
Accurate controll of piezoactuator
Hurdálek, Tomáš ; Šifta,, Radim (referee) ; Urban, František (advisor)
This thesis deals with the possibility of current and voltage control of piezoactuators from the point of view of control of optical filters for retuning the optical spectrum. At first, there is an effort to clarify the basic physical principles that are closely related to this issue. The thesis also deals with different types of piezoactuators and determines which one is the most suitable for the application. Attention is also paid to the explanation of different control options. A comparison of available drivers was made. Measurements, circuit simulations and testing of various circuits of critical parts of the driver were made. Based on this, a current driver and a current source to power it were developed. The device has been constructed and tested.
"Hodnocení území Babího lomu metodikou ""geosites/geomorphosites"""
Urban, František
The bachelor thesis deals with the assessment of significant geomorphological sites around the rocky hill of Babí lom in the Adamovská vrchovina Highland north of Brno. Within the area of interest, ten geomorphological sites are identified and described in detail. The methodology of geomorphosites is used for their assessment. The selected sites include not only individual parts of the distinctive ridge of Babí lom, but also, for example, forest springs or boulder streams, the geomorphological significance of which is currently not fully appreciated. An important aim of this thesis is to remind these overlooked localities and point out both their values and their vulnerability. Based on the assessment of individual sites, the entire area of interest is then assessed in summary and improvements in its use, management and protection are proposed.
Polarization sensitivity of the fibre optics grating sensors
Babieska, Lukáš ; Šifta, Radim (referee) ; Urban, František (advisor)
This diploma thesis deals with the effect of full-length fixation of optical fiber gratings on their polarization dependence. In addition, the effect of primary protection and parameters of optical fiber gratings on their intrinsic polarization dependence was also investigated. The theoretical part of the thesis briefly describes the historical development of optical fiber gratings, the types of optical fiber gratings used and also describes in detail the principles of polarization dependence of optical fiber gratings and the mechanisms of polarization dependence of optical fiber gratings. In the practical part of the thesis, suitable measurement methods for measuring the polarization dependence of optical fiber gratings are proposed. Furthermore, these methods are optimized and used for subsequent measurements of the effect of fixation on the polarization dependence of optical fiber gratings. Many different methods of fixation of the optical fiber gratings were then used to measure the effect of fixation, and the degree of polarization dependence of the optical fiber gratings was evaluated for each of the different fixation methods. The practical part of the thesis is concluded with a detailed summary of the results obtained.
The Business Plan for Establishing a Beer Bar in Olomouc
Ohlídal, Evžen ; Urban, František (referee) ; Bumberová, Veronika (advisor)
The diploma thesis deals with the business plan for establishing a beer bar with Belgian specials in Olomouc. The first part describes the theoretical basis of the work. It is focused on the description of the business idea, methods used for analytical research of the business surroundings, and the structure of the business plan itself. The second part deals with analytical methods mentioned. Based on these methods, appropriate and most suitable strategy is implemented. The third part of the thesis contains a comprehensive elaboration of the business plan, which follows the choice of strategies for this business.
Apodization of the fibre Bragg gratings by use of phase mask UV exposition
Burian, Tomáš ; Hejátková, Edita (referee) ; Urban, František (advisor)
This thesis describes the problem of fiber gratings, focusing primarily on the use of Bragg's grids in the sensor. It describes the types of fiber mesh production, especially the method of writing with a phase mask. The next part deals with the possibilities of using apodization in fiber optic systems. It deals with the various functions that can be used to describe apodization. The following part describes the moire principle, especially the method of overlapping two phase masks with a different period.
Advanced FTP Server
Matoušek, Jan ; Urban, František (referee) ; Horváth, Tomáš (advisor)
This bachelor thesis deals with the FTP protocol and its possibilities to verify CRC checksums, to sort multimedia data by authors, genres, years and to create transmission statistics. These options were shown on FTP server GlFTPd. A PZS-NG plugin has been installed in GlFTPd for further setup. An IRC bot Eggdrop has also been installed. It allows the displaying of the information about the uploaded files and the server information to an IRC channel when using the ngBot script from PZS-NG. GlFTPd has been installed on a physical machine with a Debian Linux distribution.
Processing of signals from fiber optic sensors
Sikora, Vojtěch ; Urban, František (referee) ; Čučka, Milan (advisor)
First two chapters of this paper deals with the division of optical fiber sensors, digital signal processing and includes price comparison of four experimental sensors. In chapter three analysis, description and evaluation of measurment has been demonstrated on Mach - Zehnder interferometer. Last chapter is about application for signal analysis from vibration sensors. Description contains snippets from source code and graphical user interface. This paper includes three fields - fiber optics, digital signal processing and creation of application - and thanks to them it provides solid basis for study of optic fiber sensors.
Longitudinal index structures in optical fibers
Polreich, Štěpán ; Čučka, Milan (referee) ; Urban, František (advisor)
This thesis describes basic concepts, principles and properties of optical fibers. Considerable part is devoted to fiber gratings that are created by a change in the refractive index in the optical fiber core. In this work is described description, principle, method od production and distribution of gratings on Bragg gratings, gratings with long period and chirped gratings. In this thesis are also presented different types of lasers and their advantages over other lasers. A large part deals with the description of the femtosecond laser, with which the structures will be later made into the material. In addition, the laser modes are differentiated, this is a mode of micro-machining and modification or a change in refractive index of the material. The last part deals with change the refractive index in planar technology, the creation of a groove for fastening the fiber and attempts to write the gratings into the optical fiber. Created fiber sensor are tested for temperature and tensile changes. Finally, the practical use of sensors made by femtosecond laser and the advantages over UV laser and phase mask techniques are presented.
Analysis and construction of an optical fibre tunable attenuator for telecommunication applications
Prokop, Daniel ; Eliáš, Josef (referee) ; Urban, František (advisor)
This paper deals with the possibilities of designing the module for control of the attenuation of the optical signal. The paper describes basics of ber optic transmission and beam e ects. Variants of attenuation cells are characterized in this paper and based on the ndings a solution of the module for control of the attenuation of the optical signal is proposed. Practical section of the thesis deals with the design and physical construction of module for control of the attenuation of the optical signal using MEMS variable optical attenuator.

National Repository of Grey Literature : 34 records found   1 - 10nextend  jump to record:
See also: similar author names
1 Urban, Ferdinand
2 Urban, Filip
Interested in being notified about new results for this query?
Subscribe to the RSS feed.