National Repository of Grey Literature 58 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Coherent dusty and gaseous structures near the Galactic center
Štofanová, Lýdia ; Karas, Vladimír (advisor) ; Kovář, Jiří (referee)
Sagittarius A*, a compact source in the centre of the Milky Way, is the nearest supermassive black hole (SMBH) in our cosmic neighbourhood, where various astrophysical processes take place. In consequence, variety of structures emerge near the Galactic centre and bow shocks that are closely studied in this work represent an example of them. The introductory part of this thesis is a brief review of the history of the Galactic centre research and its discovery in radio wavelengths. The main body of the thesis is focused on a simplified model of the bow- shock structures that are generated by stars moving supersonically with respect to the ambient medium. We discuss how these structures vary along the orbit. To this end, we consider four different models: (a) without the presence of any gaseous medium emerging from or accreting onto the SMBH, (b) taking an outflow from the SMBH into account, (c) the case of an inflow onto the SMBH, and finally (d) the combined model involving both an outflow and an inflow at the same time. We discuss symmetries of each model (or lack of them) and we find that the model considering the ambient medium at rest appears symmetrical with respect to the pericentre passage. The combined model manifests itself as the most asymmetrical one of them all. We show profiles for the...
DAQ application development for measurement of electric energy consumption in machinery
Kovář, Lukáš ; Kovář, Jiří (referee) ; Andrš, Ondřej (advisor)
The goal of the diploma thesis is to develop application for data acquisition and analysis during the measurement of electrical consumption at mechanical machines. First part of the diploma thesis is providing general summary about the methods of measuring the electrical consumption. Special focus is given on methods of the metering electrical consumption in three-phase distribution network. Furthermore, the data acquisition components are being described. Hardware components and development environment LabVIEW where the program itself was created are detailly described.
Using artificial intelligence to monitor the state of the machine
Kubisz, Jan ; Kroupa, Jiří (referee) ; Kovář, Jiří (advisor)
Diploma thesis focus on creation of neural network’s internal structure with goal of creation Artificial Neural Network capable of machine state monitoring and predicting its remaining usefull life. Main goal is creation of algorithm’s and library for design and learning of Artificial Neural Network, and deeper understanding of the problematics in the process, then by utilising existing libraries. Selected method was forward-propagation network with multi-layered perceptron architecture, and backpropagation learning. Achieved results was, that the network was able to determine parts state from vibration measurement and on its basis predict remaining usefull life.
Artificial Intelligence and Industry 4.0
Hirsch, Radim ; Kroupa, Jiří (referee) ; Kovář, Jiří (advisor)
The aim of this work is to provide an overview of the application of artificial intelligence methods in the context of Industry 4.0. The first chapter defines the concept of industry 4.0, previous development of the industry and inclusion of the scientific field of artificial intelligence in this concept. The second chapter is focused on the applications of artificial intelligence methods in the field of machining, manufacturing industry, automation and energetics. The work concludes with evaluation of methods, their advantages and disadvantages from the point of view of individual practical applications and mentions possible directions of future development.
Analysis of walking as energy source for biomedical applications
Cieslar, Filip ; Kovář, Jiří (referee) ; Hadaš, Zdeněk (advisor)
This paper deals with measurements and statistical processing of the acceleration data measured in the area of the human head. Types, principles of biomedical applications are shown, and problems pointed to its power supply. There are efforts to earn energy from surroundings of devices and extend its lifespan. Kinetic energy harvesters require such levels of acceleration for their excitation, that could possibly be obtained from human movements. 30 different people with different characteristics were thus measured during walking in order to find the common frequencies and relevant magnitudes created through vibrations during walking. Energy efficiency is evaluated using generator and use of this source to supply biomedical devices.
The study of actuators for electrical control devices automated testing
Pabiška, Martin ; Kovář, Jiří (referee) ; Andrš, Ondřej (advisor)
The thesis is focused on review of aktuators which are relevant for automatic testing of electric handling elements. There will be demonstrated overview regarding the testing of function selected handling elements with evaluation of both discussed topics.
Retrieval study of hands gestures recognizing methods captured with camera
Rybnikář, Petr ; Kroupa, Jiří (referee) ; Kovář, Jiří (advisor)
The aim of this bachelor thesis was to get acquainted with basis methods of of image processing, which can be used for recognizing hands gestures captured with camera. After that choose one method, describe it in detail and implement the method.In the first part of this theses few methods for image processing are described. In the second part Level set method is choosen and described in more detail, this method is later implemented in MATLAB R2019a. In the last chapter results of implementation are analyzed and evaluated.
Implementation of presentational device with Raspberry Pi
Beránek, Ondřej ; Kovář, Jiří (referee) ; Andrš, Ondřej (advisor)
This thesis describes the design and subsequent implementation of a presentational device with Raspberry Pi using free software. The theoretical part of this thesis includes an analysis of available commercial solutions, specification of requirements, testing free operating systems and assessment of their suitability for the purpose. The practical part of this thesis is focused on the implementation of a presentational device with the most suitable free system and on the test of this final solution. The aim of the thesis is to create a maintenance-free presentational device with easy remote access.
On-line connection of virtual reality with the external data source
Klíč, Daniel ; Kroupa, Jiří (referee) ; Kovář, Jiří (advisor)
Bachelor thesis deals with the online connection of virtual reality with the external data source and creation of the aplication in IDE Unity for HTC Vive hardware.
The database solution for storing measurement data
Holeček, Ivan ; Andrš, Ondřej (referee) ; Kovář, Jiří (advisor)
Diploma thesis is focused on elaboration of database solution for saving measured data. In theory part analyses database query language and database management system Microsoft SQL Server 2017. Further in theory part is focused on programming environment for application development using C# .NET. Thesis includes database solution for saving measured data, service console application for saving data into the database and user application for creating new measuring, representation of data and user administration.

National Repository of Grey Literature : 58 records found   1 - 10nextend  jump to record:
See also: similar author names
11 KOVÁŘ, Jakub
41 KOVÁŘ, Jan
4 KOVÁŘ, Jaroslav
8 KOVÁŘ, Jiří
8 Kovár, Jiří
6 Kovář, J.
11 Kovář, Jakub
41 Kovář, Jan
7 Kovář, Jaromír
4 Kovář, Jaroslav
2 Kovář, Jindřich
4 Kovář, Josef
3 Kovář, Jáchym
Interested in being notified about new results for this query?
Subscribe to the RSS feed.