Journal of Security and Sustainability Issues

The study presents a multidimensional comparative analysis of two dependent variables: the number of passengers transported by air in 28 European countries and the price of one barrel of crude oil in dollars. The conducted analysis shows that in the historical data concerning the identical periods (months) in both tested series, dependencies can be found. This allowed for the construction of a zero-one multiple regression model in order to confirm the impact of the number of passengers travelling by air on the price of one barrel of crude oil and describe this phenomenon with an analytical function.

Progressive changes in many areas of the business environment and internal processes in business entities are increasingly the cause of crises occurring in them, in extreme cases resulting in the need to declare bankruptcy. Bankruptcies can be considered, on the one hand, as a manifestation of maladaptation to the requirements and transformations of the market, but more and more often they become a derivative of phenomena over which entrepreneurs have absolutely no influence. The paper attempts to analyze the scale of business bankruptcies in Poland in 2009-2021, which was based on data from the Central Statistical Office and the Central Economic Information Center. Exploratory research was carried out on a time sample of 12,960 entities for the years 2009-2021, which declared bankruptcy in the analyzed period and represented all enterprises of the Polish market from the time period adopted for the research. The analyzed sample took into account the number of bankruptcies of enterprises falling on particular years. The purpose of the article is to analyze the scale of the bankruptcy phenomenon in Poland over the period 2009-2021 and to try to identify the existing dependencies.

The study comprises a multidimensional comparative analysis of the number of passengers transported by rail in twelve European countries between 2019-2021; the considered data were grouped and analyzed. The dynamics indices with a constant base were used in the study. The aim of the article was a comparative analysis of the number of passengers transported by rail in the European countries under consideration between 2019-2021. The result of the research is the observation of an increase in the number of passengers transported by rail in twelve European countries in 2021 compared to 2020 by 374 965 people. It was visible in nine out of the twelve countries considered. The largest one was observed in France, with around 170 544 passengers. Considering the percentage increase between 2020 and 2021 in respective countries in rail passenger transport, it was observed that the most significant increase was in Italy, which amounted to 25,61%.

The analysis of the training needs for the crews of police multi-purpose Black Hawk S70i helicopters serving in Polish Police Forces has been an impulse to attempt the construction of the simulation system within the research and development project financed by the National Centre for Research and Development entitled “Helicopter Simulator for Police Aviation” consisting of three components, i.e. a training stand for a pilot (cockpit), a stand for a cargo handler, a training stand for the police officers practicing the air drop operations. The simulator is supposed to provide an opportunity to drill various emergency situations, which consequently will allow to prepare the crews and technical personnel in the full range to perform the tasks as far as theoretical knowledge and practical skills are concerned. Replacing real exercises by the training held in virtual environment will contribute to the decreased costs to be incurred by Police and increased safety for any persons participating in the actions remaining the subject matters of the said trainings. The article presents the designing assumptions resulting, among other things, from multidisciplinary research performed over the determination of the detailed training needs and equipment requirements with regards to the Full Flight Simulator. The said research was conducted in collaboration with the officers of the Police Aviation Board in the High Command of the Police Headquarters as well as the operators of the counter terrorism sub-units of Polish Police Forces.