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Analysis of the time evolution of selected parameters of fires for the period 1977-2016 on the territory of the present Czech Republic
HRNČÍŘ, Miroslav
The thesis deals with the fulfilment of the following objectives: Objective 1: System Analysis of emergency events associated with fire protection, the causes of fires and the link to the system environment. Objective 2: Examination of the homogeneity of the selected time period in terms of the survey of selected parameters (number of fires, damage, number of injured people, number of people killed). Objective 3: Examination of paired dependence of selected parameters (number of fires, damage, number of injured people, number of people killed). Objective 1 was fulfilled on the basis of the system analysis performed and evidenced on individual chapters of 1.1 to 1.7 of the theoretical part, which describe the examined problem as a system with structure and with links to the system surroundings and the system superior. Compliance with Objectives 2 and 3 was associated with the verification of the H1 hypothesis (and its sub-hypotheses H11, H12) and H2 hypothesis. The thesis explored the following hypotheses: Hypothesis H1: The selected fire parameters in the monitored period are statistically dependent. Due to the system analysis, this hypothesis was divided into two partial hypotheses: Hypothesis H11: Statistical dependence will be demonstrated for selected parameters in terms of time development. Hypothesis H12: Statistical dependence will be demonstrated for selected parameters from the viewpoint of paired bonds between the parameters. Hypothesis H2: The theoretical distribution of selected fire parameters is the normal distribution. The H11 hypothesis was accepted. In terms of time development, determination coefficients from 0.4234 to 0.8271 were found. Correlation coefficients from 0.65 to 0.91 corresponded to this. The values of all the examined parameters, i.e. "number of fires", "damage", "number of injured people", "number of people killed" increased with the time. The H12 hypothesis was accepted. The examined paired relationships correlated with values of 0.72, 0.80, 0.69 and 0.67. The global H1 hypothesis was adopted. Contrary to the H1 hypothesis, the H2 hypothesis was basically rejected - normality was proved only in one parameter ("number of people killed"), in the other three cases it would be necessary to look for another theoretical division. The rejection of the H2 hypothesis was supported by both acceptance of the H1 hypothesis and the detection of the inhomogeneity of the 1977-1991 period (some homogeneity emerged for the partial periods of 1977-1991 and 1992-2016). The benefits of the diploma thesis can be seen in theoretical part (justified application of mathematical statistics without scaling in time development, justified application of mathematical statistics with scaling in paired dependencies) as well as in the practical part (finding specific time and pair correlations). Based on the description of obtained results, the possible suggestions for follow-up work were described. To carry out partial investigation from the viewpoint of two identified partial periods with possible data homogeneity, to carry out an investigation with an extended number of parameters based on e.g. factor analysis.
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Possibilities for the use of fire extinguishing equipment for extinguishing fires
HRNČÍŘ, Miroslav
In my bachelor thesis about the Possibility of usage fixed fire extinguishing systems for extinguishing fires I was mainly interested in the topic of fixed fire extinguishing systems and their usage and also in the problematics of fixed fire extinguishing systems installed and used in the SYNTHOS Kralupy a. s., SYNTHOS PBR s. r. o. and TAMERO INVEST s. r. o. (companies) For this purpose, four fixed fire extinguishing systems were chosen based on the used fire extinguishing agent. According to these criteria were chosen water, foam, powder and gas based fixed fire extinguishing systems, which are described in the thesis with regard to their construction, operation and usage. Chosen fixed fire extinguishing systems were further evaluated regarding their capabilities for extinguishing fire. According to the conducted research current options for fixed fire extinguishing systems are used. Even though current options of usage fixed fire extinguishing systems are used it is possible to improve the usage of them by introducing technical and organizational measures. As a crucial technical measure, there is proposed a technical adjustment of the water based fixed fire extinguishing system. For improving the usage of this fixed fire extinguishing system and increasing the level of fire safety of the guarded object it is proposed to change this non-automatic fixed fire extinguishing system to automatic. Other devices are automatic and the proposed improvements do not have such underlying character as it in case of the evaluated water based fixed fire extinguishing system. In the theoretical part of the thesis there are described terms like fire, burning and conflagration (fire). There are named conditions and possibilities for the origin of fire and its spreading and is described the spreading of conflagration in time and space. Furthermore, the theoretical part of the thesis is concerned about named fixed fire extinguishing systems. There is the history of their use for fighting fire, the overview of fixed fire extinguishing systems based on the used agent and the description on the different kinds of fixed fire extinguishing systems along with the description of the possibilities of their use for fighting fire. In the theoretical part are also mentioned new technologies used in the field of fixed fire extinguishing systems. The conclusion of the thesis is focused on the problematics of operation and operational capability of fixed fire extinguishing systems.
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Labe IV: Modelování pohybu vody a rozpuštěných látek ve vadózní zóně
České vysoké učení technické v Praze, Fakulta stavební ; Zumr, David ; Votrubová, Jana ; Sněhota, Michal ; Šanda, Martin ; Jelínková, V. ; Hrnčíř, Miroslav ; Dušek, Jaromír ; Dohnal, Michal ; Vogel, Tomáš ; Císlerová, Milena
Výzkumné práce vykonané ve třetím roce projektu týmem Fakulty stavební byly plynulým pokračováním aktivit z prvních dvou let řešení. V souhlase s metodikou byla pozornost zaměřena jednak na další vývoj simulačních modelů a vedle toho na měření a vyhodnocení hydraulických charakteristik. Pokračovaly experimenty určené na posouzení časoprostorové variability nasycených hydraulických vodivostí doplněných geofyzikálním měřením. Intenzivní zapojení studentů inženýrského i doktorandského studia do výzkumu umožnilo věnovat se v této fázi velmi podrobně možnostem zpřesnění popisu dynamiky proudění vody ve vadózní zóně, která je z hlediska transportních procesů determinující pro všechna řešení pohybu polutantů pod zemským povrchem.
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