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Formula Car Braking System Design
Dobrovolný, Petr ; Beran, Martin (referee) ; Ramík, Pavel (advisor)
Design of braking system for the formula student car. Calculation of basic forces acting in the braking system, including the design of hydraulic circuits. Mechanical analysis of the most important parts of the braking system and pedal assembly. Thermal analysis of the brake discs. Manufacturing and total cost calculation.
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Internet based control of laboratory models
Dobrovolný, Petr ; Smrčka, František (referee) ; Zezulka, František (advisor)
This award solves design of two models that are designed to teach on PLC and in the future on the Control Web. Both models should be used in LabLink system, which allows you to remotely working on laboratory tasks. The first software model simulates the movement of trains on rail in relation on control from the PLC. The second model is a physical model of drill. In both models are solid managing and type of construction, which allows operation without physical intervention.
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Interned based measurement system
Dobrovolný, Petr ; Kozák, Tomáš (referee) ; Zezulka, František (advisor)
The work is deal with the measuration and distribution of data using microcontroller ATmega64. The measuring system connect is done by Ethernet controller ENC28J60 in communication networks. Communication protocols TCP / IP are taken advantage of transfer data to user. Data view is dealt with the HTTP protocol through the use of HTML code. Web browser are used for disclosure of information. Web page uploading can be replenish with current analogue and digital values using the tags created for this measuring system.
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Nonstationarity of the effects of modes of atmospheric circulation variability on surface climate elements
Hynčica, Martin ; Huth, Radan (advisor) ; Dobrovolný, Petr (referee) ; Beck, Christoph (referee)
Circulation modes are highly correlated, yet often distant areas detected in a field of a circulation variable, such as sea level pressure, geopotential heights, wind speed, and wind components. They consist typically of two or more action centres, which simultaneously weaken or strengthen, hence affecting the intensity and direction of atmospheric circulation and consequently surface climatic elements, such as temperature and precipitation. Temporal variability of action centres affects spatiotemporal distribution of impact on surface climatic variables. The availability of gridded datasets allows investigation of temporal behaviour of action centres and its impact on surface climatic variables on long time scales over large regions, which is, therefore, the main scientific topic of this work. Due to a large amount of reanalyses differing in e.g. assimilated type of data and model used for their calculation, the comparison of representation of circulation modes and their temporal evolution of relationships with surface climatic elements is conducted between reanalyses. Circulation modes in reanalyses assimilating both surface and upper troposphere/satellite data (ERA40, JRA-55, NCEP-1) are mostly similar whereas the 20CRv2c reanalysis, which utilizes surface data only, contains biases. Although...
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Spatial patterns of links between temperature extremes and cardiovascular mortality in the Czech Republic
Urban, Aleš ; Kyselý, Jan (advisor) ; Huth, Radan (referee) ; Dobrovolný, Petr (referee)
Name of the thesis: Spatial patterns of links between temperature extremes and cardiovascular mortality in the Czech Republic Author: Mgr. Aleš Urban Previous studies have examined relationships of high and low air temperatures to mortality due to cardiovascular diseases (CVDs) in the Czech Republic as a whole. Much less has been understood about possible regional differences in the heat and cold effects on mortality. Within four papers published in international peer-reviewed journals, the author of this thesis investigated links between extreme temperatures and CVD mortality in the Czech Republic while considering in particular differences between (i) urban and rural areas, (ii) regions with different socioeconomic status, and (iii) regions with different physical-environmental conditions. Various biometeorological approaches were compared in order to identify meteorological characteristics affecting heat- and cold-related mortality. Excess mortality was determined as differences between observed and expected daily values, the latter being adjusted for long-term changes, annual and weekly cycles, and epidemics of influenza/acute respiratory infections. Air temperature, biometeorological indices (including the Universal Thermal Climate Index, Apparent Temperature, and Physiologically Equivalent...
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Specifics of building design from recycled building materials
Dobrovolný, Petr ; Pifko, Henrich (referee) ; Innemanová,, Petra (referee) ; Žabičková, Ivana (advisor)
Nowadays, the developed societies increasingly adhere to the ideas of sustainability, which also include the issues of raw material intensity and waste management. EU countries declare their intention to move towards so-called circular economy, where production, consumption, waste management and the market of secondary raw materials function in predominantly closed cycles. Due to its high share of raw material consumption and the amount of waste generated, the construction industry is one of the priority sectors in which these changes should take place. Consequently, the interest in recycling of construction and demolition waste will probably grow. This thesis examines the chosen topic from the architect's point of view. The issue of recycling of building materials is dealt with in the context of contemporary construction industry. The introductory part describes main material flows: the most used building materials, the method of waste management and the possibilities of its further use. The relationships between the design of the building and the production of construction waste are defined. The issue of building with recycled building materials is handled in more detail. In the main part, the design of a model object made of recycled building materials is elaborated. The individual building structures are analyzed in terms of the suitability of the use of recycled building materials and waste management after the end of a lifecycle of the building and a comparison is made with alternative structures made of conventional building materials. At the end of the work, an evaluation of the usability of recycled building materials in building structures and their economic potential is performed. There is also an evaluation of the specifics of working with recycled building materials in the design of the building.
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Statistical analyses of Land Surface Temperature in Local Climate Zones: Case study of Brno and Prague (Czech Republic)
Geletič, Jan ; Dobrovolný, Petr ; Lehnert, M.
The classification of "local climate zones" (LCZs) emerged in urban climatology to standardize description of urban climate research sites. One of the goals of classification was to get beyond urban-rural dichotomy which enabled to study urban air temperature field in more detail. Based on empirical and modelling work LCZ have proven effective in examining intra-urban air temperature differences, however a robust examination of intra-urban land surface temperatures using the LCZ framework remains elusive. In this study a GIS-based method is used for LCZ delimitation in Prague and Brno (Czech Republic), while land surface temperatures (LSTs) derived from LANDSAT and ASTER satellite data are employed for exploring the extent to which LCZ classes discriminate with respect to LSTs. Results indicate that LCZs demonstrate the features typical of LST variability, and thus typical surface temperatures differ significantly among most LCZs. ANOVA and subsequent multiple comparison tests demonstrated that significant temperature differences between the various LCZs prevail in both cities (89.3% and 91.6% significant LST differences for Brno and Prague respectively). In general, LCZ 8 (large low-rise buildings), LCZ 10 (heavy industry) and LCZ D (low plants) are well-distinguishable, while LCZ 2 (compact midrise), LCZ 4 (open high-rise), and LCZ 9 (sparsely built-up) are less distinguishable in terms of their LST. In most of the scenes LCZ 10 (heavy industry), LCZ 2 (mid-rise buildings) and LCZ 3 (low-rise building) are the warmest and LCZ G (water bodies) and LCZ A (dense forest) are the coolest zones in term of their LST. Further studies are needed to account for observational errors (such as seasons differences or thermal anisotropy) on LCZ LST patterns.
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Spatial patterns of links between temperature extremes and cardiovascular mortality in the Czech Republic
Urban, Aleš ; Kyselý, Jan (advisor) ; Huth, Radan (referee) ; Dobrovolný, Petr (referee)
Name of the thesis: Spatial patterns of links between temperature extremes and cardiovascular mortality in the Czech Republic Author: Mgr. Aleš Urban Previous studies have examined relationships of high and low air temperatures to mortality due to cardiovascular diseases (CVDs) in the Czech Republic as a whole. Much less has been understood about possible regional differences in the heat and cold effects on mortality. Within four papers published in international peer-reviewed journals, the author of this thesis investigated links between extreme temperatures and CVD mortality in the Czech Republic while considering in particular differences between (i) urban and rural areas, (ii) regions with different socioeconomic status, and (iii) regions with different physical-environmental conditions. Various biometeorological approaches were compared in order to identify meteorological characteristics affecting heat- and cold-related mortality. Excess mortality was determined as differences between observed and expected daily values, the latter being adjusted for long-term changes, annual and weekly cycles, and epidemics of influenza/acute respiratory infections. Air temperature, biometeorological indices (including the Universal Thermal Climate Index, Apparent Temperature, and Physiologically Equivalent...
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