期刊名称：Scientific Journals of the Maritime University of Szczecin
印刷版ISSN：1733-8670
电子版ISSN：2392-0378
出版年度：2005
卷号：7
页码：91-102
语种：English
出版社：MUS
摘要：The paper presents analysis results based on cases of power plant system damage from 10 ships,registered during a voyage lasting about six months on the average.For the verification of the hypothesis that they stem from one population,or to put it in a different way,that they can be treated as realisations of the same random trial,Kruskal Wallis ranks sum test was applied.The test was carried out both for the moments of successive damage and for the time intervals for successive installation damage.For the verification of the hypothesis about the conformity of the empirical distribution with selected four dis– tributions:exponential,Weibull's,log normal and gamma distribution for the analysed power plant installations,the Kolmogorov–Snimov goodness offt test was used.
其他摘要：The effects of mass media on the formation of public opinion on vaccination have been investigated.A questionnaire survey of parents about their attitude to vaccination on the page of the group 'SOS Parents’ on Facebook (67,000 participants) was conducted as well.The respondents’ feedback made it possible to identify the attitude of Ukrainians towards vaccination and the source they were using when making decision on vaccination.
关键词：power plant components failures;failure probability distributions;hypothesis verification tests
