| |
|
Surface relief evolution in cast superalloy In738LC fatigued at room temperature
Samek, Petr ; Obrtlík, Karel (referee) ; Juliš, Martin (advisor)
Low cycle fatigue is an important valving parameter of materiale which are exposed random alternate strain during their operation. The alternate strain in that material is caused by temperature fluctuations during operation and outages such as aircraft engines. Tests of low cycle fatigue were performed on samples of superalloy Inconel 738LC at stable room temperature at 23°C. The actual experiment took place at certain intervals, consisting of cycling itself, and observing changes in surface relief by light and electron microscopy. There was observed significant surface relief at an early stage of low cycle fatigue. We compared results of measurement with other different observation methods.
|
|
Dependence of Sludge Thermal Pre-treatment on its Dewatering
Žerava, Zdeněk ; Houdková, Lucie (referee) ; Boráň, Jaroslav (advisor)
The first part of the thesis is focused on the problems related to sludge and evaluates sludge disposal from waste treatment plants. The thesis mentions factors influencing method selection of sludge disposal as well as it compares sludge disposal in the Czech Republic and in the other states of the EU. It describes a complete waste treatment line and sludge disposal in the area of sludge treatment and disposal. It deals with sludge disintegration and describes the most effective methods of disintegration. The second part of the thesis describes an experimental part of disintegration of waste treatment sludge. An experiment was conducted in the school laboratory in a way of thermal disintegration in the double-surface pressure tank. The disintegration was conducted to temperatures of 60 °C, 90 °C, 120 °C, 150 °C, and 180 °C. We monitored dependence of the sludge dry residue content on disintegration temperature as well as content of suspended solids in liquid fraction (FUGAT). It was possible to choose optimal temperature of disintegration in accordance with processed results.
|
|
Video-Based Human-Computer Interface
Chrápek, David ; Švub, Miroslav (referee) ; Španěl, Michal (advisor)
This bachelor´s thesis is focused on video-based human-computer interface controlled by movement of the whole head. By tracking relative positions of eyes and nose angles of head are determined and by movement of head simple gestures are recognized. For image processing Haar-cascades based on Viola-Jones of classifiers were used to recognize head, eyes and nose within the image and for their tracking mainly Lucas-Kanade optical flow method was used.
|
| |
|
Enhancement of print lightfastness by varnishing and lamination
Komárková, Hana ; Reháková, Milena (referee) ; Dzik, Petr (advisor)
This diploma thesis deals with recent methods of lightfastness evaluation of both classic and digitally printed photographs. It summarizes the experimental methods used for colour change measurements. Primarily, it studies an influence of additional protection on lightfastness enhancement. Lightfastness testing of colour prints was carried out by accelerated ageing. Samples were prepared by 3 types of inkjet printers and 3 different print media. The surface of photographs was left untreated or modified by varnishing or lamination. A set of samples, thus achieved, was used to monitor a print behaviour during the light exposure. In conclusion effects of used receiving layer, ink or additional surface treatment were discussed. Colour changes were evaluated on the basis of measured reflectance spectra from which colorimetric quantities were calculated. Results were processed using VolGa application. An actual print-life was calculated from the plot of the normalized gamut volume loss and the exposure.
|
|
Pre-Hospital Urgent Care of Injured Motorcyclists at Traffic Accidents
SEIDL, Miroslav
Currently every day a great number of traffic accidents happens in our roads. Some accidents are followed by very serious injuries, which must be treated quickly and right. Recently many motorcyclists have been in this group of the seriously wounded and this number is still increasing. At the scene of the accident paramedics shall give the right and fast first aid mostly to a young person and they often decide on his/her life, eventually on its next quality. Paramedics must it be able to take off a protective helmet in the right way, stabilize patient´s essential vital functions and diagnose eventual shock or polytrauma. However not all the injuries can be diagnosed by paramedics with the available equipment at the scene of the accident. A good result is guaranteed in the increasing tendency of this accident rate first of all with paramedics continuous training at this specific problems. The aim of the bachelor thesis is an analysis of pre-hospital urgent care of injured motorcyclists at traffic accidents and set standard for treatment of these casualties by paramedics. The sample of respondents is represented by staff members of Health Rescue Service of South Bohemian Region and staff members of the Traumatological department of the Nemocnice České Budějovice, a.s. The data collection was performed by the methods of questioning, guided conversation and secondary data analysis. The research was performed in March 2010. Pursuant to the performed research the following hypotheses have been determined and the standard for treatment of an injured motorcyclist by paramedics has been created. Hypothesis 1: Paramedics use immobilizing tools in case of an injured motorcyclist in the right way. Hypothesis 2: Paramedics cannot take off the protective helmet in case of an injured motorcyclist in the right way.
|
|
Analysis of the EU regulations in the field of Information and Telecommunication technologies and their effect on the single market
Hart, Ludvík ; Procházka, Pavel (advisor) ; Strejček, Ivo (referee)
The bachelor thesis describes the EU regulations in the field of information and communication technologies (ICT), particularly the Digital agenda for Europe strategy. These regulations are then tested for their influence on the European single market. The major question answered here is whether the EU regulations in field of ICT have a positive impact on the EUs single market. Answer to this question helps us evaluate the ongoing Digital agenda strategy. The impact of the regulations is analysed by induction of the following indicators, international trade, ratio of population buying online, DESI index and NRI index. With this method it is possible to tackle the wide range of fields the Digital agenda covers. I conclude this work with the statement, that European ICT regulations do have a positive impact on the single market, although are problematic due to the slow legislative process and low efficiency in addressing the regulated issue.
|
|
The use of bioimpedance analysis for kidney function evaluation
Veselková, Alena ; Šrámek, Petr (advisor) ; Švára, František (referee)
Objective: To calculate glomerular filtration (GF) through the use six available methods to estimate GF and measure impedance parameters phase angle () and fat free mass (FFM) by using multifrequency and monofrequency measurement. Select one method of estimating GF as a strict method of estimation GF for this study and by using linear regression relate with other method of estimating GF and impedance parameters measured () and FFM. Consider if () and FFM are significant parameters to improve methods of estimating GF given below (MDRD-A, MDRD-B, CLCG, CLcysC). (...) Conclusions: Impedance parameters () and FFM correlate with GF, decreasing GF cause decreasing of these impedance parameters. This study proved very close relationship between parameters FFMx and FFMc, obtained by using two different kinds of measuring (R2 - FFMx and FFMc = 0,843). Method of bioimpedance is ready to other validation and to develope bioimpedance scale to estimate renal function.
|
|
Unconvential monetary policy adopted by ECB and FED in 2008-2015
Pörner, Marek ; Šetková, Lenka (advisor) ; Ševčíková, Michaela (referee)
The main aim of this thesis is to analyse the accomplishment of the goals set, namely those of the selected unconventional monetary policies approved by the Federal Reserve System and the European Central Bank in response to the last financial crisis. With the FED the attention is focused on Quantitative Easing, whereas with the ECB it is focused on the programmes called Enhanced Credit Support, SMP, OMT and EAPP. Important parts of this thesis are also the explanation of the transmission mechanism of the unconventional monetary policy, the evaluation of macroeconomic impacts of these non-standard tools, the comparison of procedures of the two monitored central banks, but mainly the analysis of selected risks related to those tools. The principal method was an empirical analysis supported by economic studies dealing with the issues mentioned above. In the thesis it was discovered that the individual goals of the monitored programmes were achieved (with the exception of the SMP). With the programme EAPP no conlusion can be drawn because the programme has not been finished yet. Nevertheless, these non-standard tools bring certain risks such as a creation of a bubble in the markets of assets, a redistribution of wealth, a spillover effect, etc. For that reason it will be possible to evaluate the overall effect of the unconventional monetary policies only after a longer time period.
|
guest ::
