|
|
Investigation of impact of radiant heating and cooling on car driver thermal comfort
Pavlík, Vojtěch ; Tuhovčák, Ján (referee) ; Fišer, Jan (advisor)
This diploma thesis is focused on the matter of radiation heating, thermal comfort maintenance and setting optimal operation parameters for heating system equipped with radiation panels. The research section summarizes the effects most important for thermal comfort, methods of its determination, heat exchange distribution between the human body and its environment, and technical possibilities of heating car interiors. The central points of this work are the simulation of car interiors heated with radiation panels and the evaluation of thermal comfort with a virtual mannequin. Thermal state was determined via the equivalent temperature and thermal comfort zones diagram (method by O.H. Nilsson). Forty-two simulated scenarios led us to conclude that thermal comfort is not possible to obtain with panels exuding a maximum temperature of 43 °C and the combination of several heat sources is required. Nevertheless radiation heating considerably contributes to energy savings without the loss of thermal comfort in assessed car.
|
|
|
Reducing energy dependence of block of flats
Bouchal, Patrik ; Fišer, Jan (referee) ; Hejčík, Jiří (advisor)
Bachelor thesis is focused on the assessment of energy self-sufficiency of block of flats. The introductory part deals with the block of flats itself. In the second part, it is thoroughly discussed whether there is sufficient amount of rainwater falling on the roof of the huse and it’s further use. The third part deals with the use of photovoltaic panels.
|
|
|
Local Control of Seat Ventilation and Its Impact on Human Thermal Comfort
Matuška, Jaroslav ; Toma, Róbert (referee) ; Fišer, Jan (advisor)
Diplomová práce je zaměřena na měření ventilovaného sedadla s ohledem na tepelný komfort člověka. Popisuje a shrnuje tepelný přenos lidského těla s okolím a termoregulaci člověka. Dále zachycuje a zhodnocuje vybrané přístupy hodnocení tepelného komfortu. Zabývá se komplexním přehledem tepelně komfortních jednotek v automobilu. Představuje použitou metodu měření tepelného komfortu u ventilovaného sedadla, načež analyzuje a vyhodnocuje jednotlivá získaná data.
|
|
|
Proving by finite automata
Fišer, Jan ; Holub, Štěpán (advisor) ; Chvalovský, Karel (referee)
In 2016, Hamoon Mousavi published Walnut which is a program that implements automated theorem proving of propositions about automatic sequences. The main purpose of this thesis was to show the theoretical functi- onality of Walnut on the basis of the relation between automatic sequences and Presburger (resp. B¨uchi) arithmetic that is a decidable theory. Another goal was to describe adequately how the decision procedure of Walnut really works, and finally, to show the practical use of Walnut on several particular problems. One of these particular problems that are solved in the thesis is computation of the critical exponent of the Rudin-Shapiro sequence - this exercise was presented as an open problem in a book of 2003 (however, this exercise does not belong among open problems any more since Shallit proved in 2011 that the critical exponent is computable for all automatic sequences.) The last chapter itself can be also used as a brief manual for newcomers to Walnut that want to use this program for their own applications. 1
|
|
|
Stony routes in the Broumov walls and their importance for identity formation of landscape and region
Fišer, Jan ; Kučera, Zdeněk (advisor) ; Tůmová, Martina (referee)
The thesis deals with the analysis of current condition and heritage of old stony routes in the Broumov walls. These routes were built from variously sized sandstone blocks of local origin. The routes are specific for the area of interest and they have their long history. The aim of the thesis is, with the example of the Broumov walls, to discuss the importance of the old routes as specific historical landscape structures and local heritage for shaping of the identity of the region and its specific character. Regional identity, heritage and historical landscape structures belong to key concepts introduced in the theoretical part. Significance of the routes as a specific kind of the heritage and an integral part of local cultural landscape is discussed. In the empirical part of the thesis, results of a partial inventory of stony routes in the Broumov walls, which have been done during research, are introduced. The result is shown in attached maps. The inventory was focused on classification of the routes by degree of conservation of the original character and by ways of use today. The thesis also deals with the research on perception of route heritage and contemporary ways of its use by local authorities. Possibilities for protection and future reconstruction of the stony routes are searched. The...
|
|
|
Ways to influence amateur's athletes postural stability
Fišer, Jan ; Zahálka, František (advisor) ; Nováková, Tereza (referee)
Title Ways to influence amateur s athletes postural stability Objectives The aim of this study is to describe the selected parameters of body composition and postural stability of the amateur s athletes (floorball players) group and to assess the efficiency of short-term intervention exercise based on senzomotor stimulation, acral coactivation therapy and plyometrics. Methods This work is a descriptive work, one part of it is the intervention. Two groups of amateur s athletes (floorball players) were examined during the study - intervention group(n = 16, average height = 178,23 cm (std 7,18), average weight = 80,04 (std 11,53), average age = 25,15 years (std3,31 )) and control group(n = 8, ave- rage height = 181,48 cm (std 5,59), average weight = 82,29 kg (std 11,20), average age = 27,07 let (2,68)). Each participant underwent the entrance measurement both on Footscan to evaluate the level of postural stability by selected parameters and on InBody 3.0 a Tanita to evaluate the level of body composition by selected parame- ters. Then the intervention group took part in the intervention exercise. After the six week intervention period underwent both groups the second measurement. The results of both measurements were evaluated, compared and statistically analyzed. Results The results showed great...
|
|
|
Continued fractions in coding theory
Fišer, Jan ; Šťovíček, Jan (advisor) ; Holub, Štěpán (referee)
The first part of the thesis acquaints us with the Reed-Solomon codes, methods of their construction and encoding. At the same time we provide the evi- dence of their most important properties including the relevant theoretical basis. In the second chapter we introduce the theory of continued fractions over a field and examine their structure. Applying the executed general ob- servations on the specific case of the formal Laurent series we get to efficient Reed-Solomon decoding algorithm. Without complete proofs we also men- tion other two decoding algorithms that are based on solving the key equation as well, namely Berlekamp-Massey and Euclidean algorithm. In the end we show the equivalence of these three algorithms.
|
|
|
Foundation and creation of a limited liability company
Fišer, Jan ; Patěk, Daniel (referee) ; Zahradníčková, Marie (referee)
Summary: In my thesis I focus on foundation and creation of a limited liability company under Czech law. Special attention is given to the explanation of limited liability of the partners of this type of company. The paper also focuses on distinction of the terms foundation of a company and creation of a company and the difference between them. The theoretical definition of the limited liability company is then followed by examining, explaining and analysing the foundation and subsequent creation of a limited liability company. The text also presents besides the actual law, the new law, regulating inter alia limited liability companies, that comes into effect on 1st January 2014 and its new regulations. The thesis is, apart the introduction and conclusion, composed of two chapters, each of them dealing with different aspects of foundation and creation of limited liability companies. Chapter one is introductory and defines the basic terminology and juridical institutes that are then used in other chapters of the paper. One part also describes the history of limited liability companies on the territory of the Czech Republic and its predecessor countries. Another part also introduces the new law that comes into effect on 1st January 2014. Chapter two introduces the process of foundation and creation of a...
|
|
|
Accumulation of energy from renewable sources
Charvátová, Marie ; Bajko, Jaroslav (referee) ; Fišer, Jan (advisor)
This bachelor’s thesis deals with the issue of accumulation of energy from renewable sources with a closer focus on electricity storage in the "small/home" scale. Delivering energy from renewable sources is highly variable and, in order to cover the time shift between production and consumption, energy must be stored. In the paper are described individual types of energy used in residential housing, sources of renewable energy are presented and various ways of energy accumulation are analyzed. The greatest attention is paid to chemical accumulators, because they are the most suitable solution for home use due to their practicality. At the end of the thesis, operational data from a small demonstration photovoltaic power plant with accumulation of electric energy in chemical accumulators are processed and evaluated.
|
|
|
Heating and ventilation in the „Emotivní dům“
Brázda, Jan ; Fišer, Jan (referee) ; Charvát, Pavel (advisor)
This master’s thesis deals with the design of the heating and ventilation system for the ‘Emotivní dům’ which was designed by the author of this thesis. The first part of the thesis provides an overview of the project and the architectural design of the house. In the next part, the calculation of the heat loss and the design of the heating and ventilation system is described. War-air heating/ventilation is used in in the habitable rooms of the house with the hydronic system utilized in other spaces. The floor heating is used in the bathrooms and the other non-habitable spaces, such as the garage, are heated with radiators. A natural gas boiler is used as a heat source for both space heating and domestic hot water heating. The thesis contains the floor plans of the house as well as technical drawings of the heating and ventilation system.
|
guest ::
RSS feed.