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The influence of different types of ventilation outlets on the heat transfer by convection from the human body
Zábovský, Ján ; Pokorný, Jan (referee) ; Fišer, Jan (advisor)
The aim of this diploma thesis is to investigate the influence of different types of HVAC system outlets on convective heat transfer from a human body. The first part of the thesis consists of an overview of essentials important for understanding the issue, specifically, metabolism, thermoregulation, heat transfer mechanisms, thermal vote and fluid dynamics. The second part defines the main working hypothesis and describes the used experimental approach leading either to confirmation or disproval of the hypothesis. The chosen approach is based on a measurement with thermal mannequin “Newton” using two different configurations: constant surface temperature and constant generated heat flux. In case of the first configuration, the convection intensity indicator was the value of heat flux generated from each of surface segments of the thermal mannequin. Their surface temperature was the indicator when running the experiment using the second configuration. The value was evaluated by the thermal mannequin as well as the thermal camera Flir i7 which provided more detailed division of the surface. The final part of the thesis describes the progress of the experiment itself, represents gathered values involving analysis of contaminants and confirms or disproves the original thesis.
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Manipulator in the line for heating logs
Vítek, Jan ; Pokorný, Jan (referee) ; Pokorný, Přemysl (advisor)
This thesis concerns with construction design of manipulator. The purpose of the manipulator is to transport beech logs. It is a part of the production line for heating and steaming veneering of the logs before their subsequent processing. This thesis presents a new design solution. It offers detailed descriptions of the purpose of the construction and of individual functional assemblies. It also describes the means for operating the machine and the types of sensors used. Calculation of forces and reactions in the mechanism, based on a simplified load calculation model, constitutes an important part of the work. Design of key components of the machine is then based on the results of the analysis of the forces involved. The supplements of the thesis include photographs of the manipulator realization and selected technical design.
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Automotive ventilation system - comparison of an influence of boundary conditions on flow from various types of ventilation outlets
Brdečko, Radim ; Pokorný, Jan (referee) ; Lízal, František (advisor)
Diploma thesis deals with a research of the flow in front of three different automotive vents. The velocity field and intensity of the turbulence was measured in detail, using thermoanemometry. After that the same data was measured with PIV method and validation was performed. The difference between achieved data was investigated. The design among the vents was also investigated, because it’s fundamentally affects the air flow. The purpose of this thesis is to obtain data about the velocity field using two methods and their subsequent use to validate numerical simulations, which will be performed in the future. The diploma thesis also contains the calculation of measurement uncertainty.
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Algorithms for Model Simplification
Pokorný, Jan ; Přibyl, Jaroslav (referee) ; Pečiva, Jan (advisor)
This paper is dedicated to simlification algorithms of polygonal models. First chapter deals with common principles of model simplification - features of polygonal models are explained here along with operations used in simlification. Next chapters introduce three simplification algorithms - Uniform Vertex Clustering, Floating Cell Vertex Clustering and Vertex Decimation. These methods are tested on a number of models and compared in various aspects - visual quality, aproximation time and geometric error of aproximation.
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Residential Building, civil technical projekt.
Pokorný, Jan ; Sedlák,, Petr (referee) ; Kovářová, Barbora (advisor)
In my diploma thesis, I focus on a building technology project of an apartment house in Prostějov. My work aims to design an optimal construction process. The thesis consists of a technical report, coordination drawing, project of the building site, building machines and mechanisms, time schedule and financial plan, description of technological process of the ventilated facade and of the monolithic reinforced concrete vertical structures including quality controls and testing plans. The process of making ventilated facade in comparison with the ETICS system is presented in more detail. Because the construction works take place in a city centre, the study of noise on the construction site is included as well.
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Topological structures in ferroic materials: Book of Abstracts of the International Workshop TOPO2019
Hlinka, Jiří ; Pokorný, Jan ; Bubnov, Alexej
This is the Book of Abstracts for the International Workshop on Topological Structures in Ferroic Materials (TOPO2019 conference) held in Pruhonice-Prague on June 16-20, 2019. The special objective of the conference is expressed in the conference title: Topological Structures in Ferroic Materials. The continuous worldwide interest to this conference series is proving that it has a respected position within the series of International conferences covering all interdisciplinary field of the research. The fifth TOPO meeting in Prague 2019 was aiming to bring together the forefront science experts as well as young scientists interested in topological aspects of magnetic, superconducting, ferroelectric as well as liquid crystal matter, and mutually benefit from the beauty of the existing unifying scientific perspective. At the TOPO2019 conference more than 90 participants from 20 countries all over the world presented about 50 lectures.\n
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Influence of Hyperkinetic Load on Selected Mechanical Changes of Human Axial System.
Panská, Šárka ; Jelen, Karel (advisor) ; Pokorný, Jan (referee) ; Radvanský, Jiří (referee)
Title: Influence of Hyperkinetic Load on Selected Mechanical Changes of Human Axial System. Objectives: The main aim of this thesis is to determine the influence of hyperkinetic load on the change of selected mechanical properties of the rhythmic gymnastic axial system based on the sophisticated use of the Transfer Vibration through Spine (TVS) method. Methods: The following experimental methods were used to identify changes in rheological properties of AS and to assess load intensity: 1) TVS method; 2) software for evaluating and analyzing vibration tests of heterogeneous systems; 3) kinematic and dynamic motion analysis using: 2D motion video recording, QUALISYS 3D motion analysis system, KISTLER, to analyze dynamic human-surroundings interactions. Results: Pilot studies and the main experimental part of the thesis have shown that the use of the TVS method can identify both short-term and longitudinal changes of AS mechanical properties. Due to the hyperkinetic load, the selected mechanical properties of the rhythmic AS are changed. The gymnastic apparatus reacts to the training load by reducing the rheological parameters, especially the damping coefficient b and the viscosity µ. After regeneration, which is on the following day, the parameters return to the default values. The impact load...
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ZÍSKEJ – national system for sharing and delivering documents
Pokorný, Jan
A software platform called “ZÍSKEJ” (Get it) for documents sharing and delivery was designed and developed at the National Library of Technology as a nationwide system for public libraries in the Czech Republic. The project was supported by the Ministry of Culture of the Czech Republic. The system ZÍSKEJ is published as open source with a GNU Public License (GPL). ZÍSKEJ is a server application that is capable of managing user’s document requests through its web client or local integration using the available API. The system is based on a request management module that automatically handles the queue of incoming requests to deliver the document requested by end users or by libraries that serve end-users.
Fulltext: idr-1419_1_paper -  PDF
Slides: idr-1419_2_presentation - PDF
Video: ILDS19_Pokorny -  MP4
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