Перегляд за Автор "Vira Butenko"
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- ДокументAssessing the probability of bankruptcy when investing in cryptocurrency(Суми: ТОВ «Консалтингова видавнича компанія «Перспективи бізнесу», 2022-09-14) Serhii Kozlovskyi; aroslav Petrunenko; Hennadii Mazur; Vira Butenko; Natalya IvanyutaThe cryptocurrency market is not regulated, people and companies wishing to invest in cryptocurrency do not have the same protection as when investing in other assets. In the absence of information and regulatory laws, investors should decide if cryptocurrencies make sense for their financial goals and what kind of investment strategy to choose not to go bankrupt. The aim of the study is to determine the probability of “tail events” and to assess in this way the probability of bankruptcy when investing in cryptocurrency using the Monte Carlo method. The analysis is carried out on the period from September 1, 2014 up to July 1, 2022. Despite the fact that today there are more than 10,000 types of cryptocurrencies, Bitcoin was chosen to assess the probability of bankruptcy. The reason is that Bitcoin is the world’s first decentralized cryptocurrency and its data is stored in a long-term history, which allows testing a long-term investment strategy. Besides, Bitcoin has not gone through a period of persistent inflation that makes the result of testing a short-term investment strategy more reliable. To date, there are around 25 million Bitcoin holders, representing 42.2% of the crypto market. Almost all cryptocurrencies have been proven to follow Bitcoin. The probability of bankruptcy for a short-term cryptocurrency investment strategy is about 17%-23%. For a long-term cryptocurrency investment strategy, the probability of bankruptcy fluctuates from 13% to 16%. Contrary to popular belief, investors looking to avoid bankruptcy should prefer a long-term strategy. The best way for cryptocurrency investors to protect themselves from bankruptcy is to alternate long and short investment periods.
- ДокументComparison and Assessment of Factors Affecting the COVID-19 Vaccination in European Countries(Kyiv: PHEI European University, 2021) Serhii Kozlovskyi; Daria Bilenko; Mykhailo Kuzheliev; Natalya Ivanyuta; Vira Butenko; Ruslan LavrovThe Covid-19 spread has become a major challenge for humanity in the last decade. It was believed that the Covid19 vaccine development would have to end the pandemic. On the contrary, society has faced a new challenge which is that there are both countries that cannot afford to purchase the Covid-19 vaccine and inhabitants who do not trust new vaccine. Without adequate Covid-19 vaccination level, the global pandemic is not going to end. The object of this study is factors affecting the vaccination Covid-19 in European countries. The subject of the study is the statistical analysis methods to compare and assess of factors affecting the vaccination Covid-19 in European countries. The aim of the study is to find out which concerns about vaccination are more important and have an impact on the Covid-19 vaccination level in European countries. It is examined six factors; three of them relate to the government vaccine administration, the other three are about a public opinion on Covid-19 vaccination. The analysis is carried out in 22 European countries. The result of the study allows to state that public opinions factors are more important in pandemic and have more impact on the vaccination rate.
- ДокументFORMATION OF THE MODEL OF SUSTAINABLE ECONOMIC DEVELOPMENT OF RENEWABLE ENERGY(2023-11-04) Oleksandr Dluhopolskyi; Serhii Kozlovskyi; Yurii Popovskyi; Svitlana Lutkovska; Vira Butenko; Taras Popovskyi; Hennadii Mazur; Andrii KozlovskyiThe article considers the use of sustainable energy as a potentially effective alternative energy source capable of replacing traditional natural fuels. The aim of the research is to develop a complex model of sustainable economic development able to promote introducing and expanding sustainable power engineering as potential alternative energy source, providing sustainable economic development, energy efficiency and reducing damages to the environment. The hypothesis lies in introduction of a model for sustainable economic development due to expansion of renewable energy which will result in economic growth, rise in energy efficacy and reducing hazards to the environment. A comparative analysis of costs and revenues of various types for using energy sources was carried out to estimate the economic efficiency and feasibility of renewable energy. The data analysis toolkit uses MS Power BI software, in which the data model was created. The conducted regression analysis provided valuable nu-merical and practical results on formation of the model of sustainable economic development of renewable power engineering. The research is based on the analysis of the impact “share of energy” on the level of electric energy import and CO₂ emissions. It is recommended to intensify efforts to develop renewable energy as a key direction for sustainable economic development to ensure energy security, reduce negative environmental impact and achieve global sustainable development goals.
- ДокументHealthcare sector in European countries: Assessment of economic capacity under the COVID-19 pandemic(Суми: LLC “Consulting Publishing Company “Business Perspectives”, 2022-04-07) Anastasiia Simakhova; Oleksandr Dluhopolskyi; Serhii Kozlovskyi; Vira Butenko; Volodymyr SaienkoThe year 2020 showed certain unpreparedness of the world’s countries for the challenges of the COVID-19 pandemic due to the unpopular measures of closed borders and total quarantine. The leading social component that opposes a pandemic is the healthcare system. Thus, the purpose of this paper is to assess the ability of European countries to respond to the COVID-19 pandemic. The cluster modeling was performed using the STATISTICA 7.0 package. As a result of modeling, the studied countries were divided into 4 clusters. The first cluster included nine countries. According to the smallest distance, the core countries in this cluster are Ireland and Bulgaria. The second cluster included seven European countries. The core country in this cluster is Sweden. Five of the studied countries were part of the third cluster. The core country in this cluster is Estonia. The fourth cluster included economically developed European countries with a Scandinavian social economy model and countries with a transitive social economy model. The core country in the fourth cluster is Germany. The recommendations for European countries can be introducing educational activities at the state level among the population on the importance of vaccination against COVID-19, increasing the staffing of the healthcare system, conducting the audit on the effectiveness of using public funds, and developing the medical infrastructure.
- ДокументThe Impact of the War in Ukraine on the Food Security of Low-Income Countries(Польща: Люблінський технологічний університет, 2023) Olena Shevchuk; Olha Ilyash; Serhii Kozlovskyi; Nadiia Roshchyna; Svitlana Hrynkevych; Vira Butenko; Glib MazharaThe article reveals the expediency of revising the fundamental provisions of the formation of the food security system of low-income countries, since the world food system is significantly vulnerable to crisis-forming factors. The problem of the imbalance of the world's food systems and, consequently, the change in the production model in low-income countries is substantiated. It is proposed to study the impact of the war between Russia and Ukraine on the world’s food security, in particular: to outline the main stages of the formation of Ukraine as a guarantor of food security in the world food system; to determine the impact of the war on the production and export of agricultural goods; to analyse the food situation in developing and low-income countries; to model the impact of inflation on the food security in developing and low-income countries; to form scenarios for ensuring Ukraine's food security in the short- and long-term periods. Food inflation rate, Core Consumer Price Index and Consumer Price Index have been selected for the analysis of the inflationary impac.
- ДокументThe Influence of the World Grain Market on Prevalence of Mankind’s Undernourishment in the Times of War on the Ukraine(Польща: Люблінський технологічний університет, 2024) Serhii Kozlovskyi; Allam Yousuf; Vira Butenko; Tetiana Kulinich; Olena Bohdaniuk; Liudmyla Nikolenko; Ruslan LavrovThe world cereal production and supply as well as their trade, stock and losses are important indicators of the world market of cereals. They play a huge role in ensuring food security. The aim of this research is to identify the relation of the indicators of the world grain crops market (production, supply, losses, trade, stocks) and the level of malnutrition Prevalence of Undernourishment (PoU) among the world's population. Based on data from the Food and Agriculture Organization of the United Nations (FAO), a correlation-regression analysis was conducted between indicators of the global grain crops market, in particular: the wheat market, the fodder market of grain crops, the rice market and PoU of the world population for the period 2013/14 – 2020/2021 marketing years. It has been proven that there is a close, statistically reliable relationship between the above mentioned indicators, except for grain stocks and POU. The analysis of the world cereal market showed that among the indicators characterizing its conditions, the indicator trade in grain crops (r = 0.851; D = 0.724; F = 3.968, (F > F t ); z = 1.26; rL = 0.37; rU = 0.97) has the highest level of correlation. It was found that with an increase in the volume of world cereal trade by 1 million tons, the PoU level will increase by 0.018%. A review of literary sources proves that the problem of ensuring food security, in particular with regard to reducing the level of starvation and malnutrition, cannot be solved only by fighting climate change, overcoming socio-economic and military problems, fighting pandemics, etc. Its solution to a large extent depends on fair, uniform export and import of food products, as evidenced by the calculations. A separate direction for solving the problem of the spread of malnutrition is the elimination of the policy of highly developed countries regarding the application of individual sanctions against countries with high PoU values, in particular, the Central African Republic, Madagascar, Haiti, Afghanistan, Chad, Congo, Lesotho, Liberia, Mozambique, etc.