Перегляд за Автор "Oleksandr Dluhopolskyi"

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    Dark personality traits and job performance of employees: The mediating role of perfectionism, stress, and social media addiction
    (Суми: LLC “Consulting Publishing Company “Business Perspectives”, 2021-09-22) Mehmet Kiziloglu; Oleksandr Dluhopolskyi; Viktor Koziuk; Serhii Vitvitskyi; Serhii Kozlovskyi
    The purpose of this study was to explore the indirect and direct relationships of Big5 and dark personality traits (i.e., extroversion, neuroticism, agreeableness, openness, conscientiousness, narcissism, Machiavellianism, psychopathy, sadism, and spitefulness) with job performance via perfectionism, stress, and social media addiction. A total of 514 private sector employees filled out a query sheet that included the assessment tools for the variables. Path analysis using a multiple mediation model indicated that neuroticism was negatively directly and indirectly related to job performance via stress and social media addiction. Machiavellianism and spitefulness were directly positively associated with job performance, and Machiavellianism-related higher social media addiction diminished the direct positive effect of Machiavellianism on job performance, indicating complex relationships. Furthermore, stress, social media addiction, and perfectionism were related to different personality traits positively and negatively. Findings of the present study suggest that an anti-social personality may promote higher job performance. However, job performance may be adversely affected by the adverse consequences relating to these traits. Professionals and firms that attempt to increase job performance should take anti-social personality traits and their complex effects on job performance into account.
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    Determinants of COVID-19 Death Rate in Europe: Empirical Analysis
    (Vinnytsia: Institute of Feed and Agriculture of Podillya National Academy of Agrarian Sciences of Ukraine, 2021) Serhii Kozlovskyi; Daria Bilenko; Oleksandr Dluhopolskyi; Serhii Vitvitskyi; Olha Bondarenko; Oleksandr Korniichuk
    At the end of 2019, the new virus called Coronavirus disease (COVID-19) spread widely from China all over the world (including Europe). Most countries in Europe at the beginning of 2020 have been quarantined. The aim of the work is to develop the system dynamics model for assessing the impact of the different factors on the COVID19 death rate in Europe. There were tested three hypotheses about factors of reducing the COVID-19 death rate with the help of linear regression analysis. The density of the population of European countries doesn’t affect the COVID-19 death rate. Also, COVID-19 death rate does not drastically affect mortality statistics. But the level of country’s economic development is a factor of COVID-19 death rate because in high developed countries the pandemic death rate is lower, regardless of the mechanisms of the spread of the disease and its impact on human health.
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    FORMATION 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 Kozlovskyi
    The 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.
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    Healthcare 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 Saienko
    The 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.