|
|
Innovating a laboratory task: Inspection of electrical wiring and devices
Klement, Petr ; Steinbauer, Miloslav (referee) ; Kadlec, Radim (advisor)
The bachelor thesis deals with the innovation of laboratory tasks, called Inspection of Installation and Equipment. The aim is to construct a device that will be able to simulate errors during the inspection on the appliance. The task will be extended to build the appliance itself, which will be measured and further simulated errors. The REVEXprofi digital measuring instrument will be used for measurement. The safety of the device will be ensured by the measuring properties of the REVEXprofi instrument, by storing the circuit inside the built-in device and by the small overlaps of the measured values above the standard when the error is triggered. The circuit was simulated using the TINA 9.0 program.
|
|
|
PMD - polarization mode dispersion and its effects on data transport
Trávníček, Pavel ; Dostál, Otto (referee) ; Filka, Miloslav (advisor)
My graduation thesis is concerned with the effect of polarization mode dispersion on transmitted signal by optical line. It describes external and internal causes of origination of polarization mode dispersion. On the basis of these effects there is a differential group delay (DGD). It is the time delay in meantime within individual modes. DGD results in a time extension of impulsion and limitation of maximum bit rate. This thesis contains localization methods of part of gossamer filament with increased value of PMD by POTDR method. This method is based on the principium of back dispersion and its modifications SOP a DOP. Very important chapter of this thesis is the measurement of the polarization mode dispersion. There are described methods of PMD measurement. It is the interferometric and polarimetric method and the method of state of polarization. The major part of this thesis is about the reduction of polarization mode dispersion effect. This part is divided into two parts. First part is about the methods of PMD effect reduction and the second one is about the PMD compensation. The discrepancy between these two parts is the reduction way of PMD effect on transmitted channel. The compensation use the compensation components inserted into the transmission path. By PMD reduction methods we can solve the problems from the view of changing of fibre or all cable. For better understanding of polarization mode dispersion effect there are simulated 4 optical lanes of various parameters. The simulation output is the eye diagram which provides the view at results of transmission lane. In the final part there is the evaluation of measured parameters of optical lanes simulated in a laboratory.
|
|
|
Application of measuring probes in machining process
Vrzal, Jan ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
This bachelor thesis is focused on measuring methods in process of machining. The object of this work is making summary of measuring methods. The thesis consists of two parts. First part focuses on measuring means for the inspection and the measuring outside the machine tool. The second part provides summary of application of measuring probes, which are used directly in the machine tool.
|
|
|
Translation and pilot validation of three healthcare questionnaires
Pecka, Václav ; Kavka, Tomáš (advisor) ; Jevič, Filip (referee)
Self-reported questionnaires are method of choice for evaluation of relevant domains in low back pain population. Multiple questionnaires exist measuring significant number of potentially meaningful domains. The decision which ones to use should be based on an analysis of clinimetric properties reported in literature. An effort should also be made to translate existing outcome measures to Czech language. This thesis consists of research on methods and parameters designed to evaluate quality and usefulness of measuring methods and example of analysis of clinimetric properties is provided. The experimental section is devoted to reporting the translation process and field testing of three healthcare questionnaires concerning disability (the Patient Specific Functional Scale), self-efficacy (the Pain Self-efficacy Questionnaire) and global perceived effect (the Global Perceived Effect Scale). The questionnaires are comprehensible and ready to be used in clinical practice. There still needs to be a cross-cultural equivalence study performed for them to be eligible for research purposes and international collaboration. In the preliminary analysis, the scores also showed behavior corresponding to the properties reported in the literature.
|
|
|
Innovating a laboratory task: Inspection of electrical wiring and devices
Klement, Petr ; Steinbauer, Miloslav (referee) ; Kadlec, Radim (advisor)
The bachelor thesis deals with the innovation of laboratory tasks, called Inspection of Installation and Equipment. The aim is to construct a device that will be able to simulate errors during the inspection on the appliance. The task will be extended to build the appliance itself, which will be measured and further simulated errors. The REVEXprofi digital measuring instrument will be used for measurement. The safety of the device will be ensured by the measuring properties of the REVEXprofi instrument, by storing the circuit inside the built-in device and by the small overlaps of the measured values above the standard when the error is triggered. The circuit was simulated using the TINA 9.0 program.
|
|
|
PMD - polarization mode dispersion and its effects on data transport
Trávníček, Pavel ; Dostál, Otto (referee) ; Filka, Miloslav (advisor)
My graduation thesis is concerned with the effect of polarization mode dispersion on transmitted signal by optical line. It describes external and internal causes of origination of polarization mode dispersion. On the basis of these effects there is a differential group delay (DGD). It is the time delay in meantime within individual modes. DGD results in a time extension of impulsion and limitation of maximum bit rate. This thesis contains localization methods of part of gossamer filament with increased value of PMD by POTDR method. This method is based on the principium of back dispersion and its modifications SOP a DOP. Very important chapter of this thesis is the measurement of the polarization mode dispersion. There are described methods of PMD measurement. It is the interferometric and polarimetric method and the method of state of polarization. The major part of this thesis is about the reduction of polarization mode dispersion effect. This part is divided into two parts. First part is about the methods of PMD effect reduction and the second one is about the PMD compensation. The discrepancy between these two parts is the reduction way of PMD effect on transmitted channel. The compensation use the compensation components inserted into the transmission path. By PMD reduction methods we can solve the problems from the view of changing of fibre or all cable. For better understanding of polarization mode dispersion effect there are simulated 4 optical lanes of various parameters. The simulation output is the eye diagram which provides the view at results of transmission lane. In the final part there is the evaluation of measured parameters of optical lanes simulated in a laboratory.
|
|
|
Application of measuring probes in machining process
Vrzal, Jan ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
This bachelor thesis is focused on measuring methods in process of machining. The object of this work is making summary of measuring methods. The thesis consists of two parts. First part focuses on measuring means for the inspection and the measuring outside the machine tool. The second part provides summary of application of measuring probes, which are used directly in the machine tool.
|
|
|
The principle of anti-superposition in QM and the local solution of the Bell’s inequality problem
Souček, Jiří
In this paper we identify the superposition principle as a main source of problems in QM (measurement, collapse, non-locality etc.). Here the superposition principle for individual systems is substituted by the anti-superposition principle: no non-trivial superposition of states is a possible individual state (for ensembles the superposition principle is true). The modified QM is based on the anti-superposition principle and on the new type of probability theory (Extended Probability Theory [1]), which allows the reversible Markov processes as models for QM. In the modified QM the measurement is a process inside of QM and the concept of an observation of the measuring system is defined. The outcome value is an attribute of the ensemble of measured systems. The collapse of the state is substituted by the Selection process. We show that the derivation of Bell’s inequalities is then impossible and thus QM remains a local theory. Our main results are: the locality of the modified QM, the local explanation of EPR correlations, the non-existence of the wave-particle duality, the solution of the measurement problem. We show that QM can be understood as a new type of the statistical mechanics of many-particle systems.
Fulltext:  PDF
|
|
|
The methods of mapmaking in the past and at present
VRACOVSKÁ, Libuše
This bachelor thesis deals with the methods of mapmaking in the past and at present. Mapmaking from prehistoric times to the oldest maps in the Czech Republic is covered in the introductory part. Military mapping, overview of cadastral surveying, topographic mapping of the 20th century and other maps (SM 5 (1:5000 national map), THM (technical-economic maps), ZMVM (basic large-scale map), middle-scale maps and purpose maps) are described in the following parts. The main part covers an overview of geodetic methods and, in addition, measuring of lengths and altitudes, and instruments and tools used are briefly described. The methods used for photogrammetry and the latest way of providing data i.e. remote survey of the Earth are described in the final part. The aim of the thesis is to describe procedures of mapmaking in the Czech Republic and the map development and to give a summary of methods that were used in the past and those that have been used these days for mapmaking.
|
|
|
Methods of mapping in the past and present
ŠTÍCHOVÁ, Michaela
The aim of this thesis is to provide an overview of the making of each map series for civilian use in the Czech Republic since Klaudyán?s map to the present. The progressive improvement of the targeting, enriching and refining the content of maps, using geodetic and cartographic bases, all came with time and gradually and in this thesis it will be shown in the examples each of the maps. Therefore, the thesis gives a summary of maps, first historical maps manufactured by individuals (from Klaudyán?s map to Muller?s map), and historici maps only for cadastral purposes, and finally maps created from 1945 (SMH-5, THM, SMO-5, ZMVM, SM-5 and the present cadastral map). A separate chapter consists of an overview of projections used for the mentioned maps, which is the Cassini-Soldner?s, Gauss-Krüger?s and Křovák?s projection.
|
guest ::
