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Empirical cumulative distribution function of the characteristic sign of the gas environment during fire

Pospelov, Boris and Andronov, Vladimir and Rybka, Evgenіy and Bezuhla, Yuliia and Liashevska, Olena and Butenko, Tetiana and Darmofal, Eleonora and Hryshko, Svitlana and Kozynska, Iryna and Bielashov, Yurii (2022) Empirical cumulative distribution function of the characteristic sign of the gas environment during fire. Eastern-European Journal of Enterprise Technologies, 4/10 (118). pp. 60-66. ISSN 1729-3774

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Abstract

The object of this study is the dynam-ics of a characteristic sign of an incre-ment in the state of the gaseous medium in the premises when a thermal source of fire appears. The subject of the study is the type of an empirical cumulative function of the distribution of dynam-ics of a characteristic sign of an incre-ment in the state of the gaseous medi-um in the absence and appearance of a thermal source of fire in the premises. As a characteristic feature, the probabili-ty of non-recurrence of the increments of the vector of states of the gaseous medium was chosen. The results of the study make it possible to quickly iden-tify thermal sources of fire under uncer-tain conditions. The methodology for studying the empirical cumulative func-tion of the distribution of the dynamics of the probability of non-recurrence of the increments of the vector of the state of the gas medium has been substanti-ated. The technique includes the imple-mentation of seven consecutive proce-dures and makes it possible to explore the specified function for arbitrary time intervals. The empirical cumulative dis-tribution function for two fixed time intervals of equal duration before and after the appearance of test thermal sources of fire in the laboratory cham-ber was investigated. It was established that the features of the empirical cumu-lative functions of the distribution of the dynamics of the probability of non-re-currence of the increments of the vec-tor of the state of the gas environment allow for early detection of fire. The main sign of detection is a decrease in the fixed values of the empirical cumula-tive distribution function. For test ther-mal sources, fixed values of the empiri-cal cumulative distribution function are in the range of 0.15–0.44. These proba-bilities are determined by the different ignition rate of the test thermal sources. The research results indicate the possi-bility of using the identified features of empirical cumulative distribution func-tions of the dynamics of the probability of non-recurrence of increments of the vector of the state of the gas environ-ment for the early detection of fires

Item Type: Article
Subjects: Q Наука > Q Наука (Загальне)
Divisions: Природничо-географічний факультет > Кафедра географії та туризму > Фахові видання
Depositing User: Кафедра географії та туризму
Date Deposited: 11 Jul 2023 14:33
Last Modified: 11 Jul 2023 14:33
URI: http://eprints.mdpu.org.ua/id/eprint/12934

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