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    Analysis of the internal factors of the formation of crisis conditions on the position of Ukraine in the global economy
    (Maltepe Üniversitesi, 2019) Dorokhov, Oleksandr; Sabadash, Lyudmila
    The article deals with the problems of studying economic crises in different periods of development of the economy of Ukraine. Crisis conditions have become an important issue of the Ukrainian economy. Despite the growth of nominal GDP, the modernization of production and the attraction of foreign investment, Ukraine is still under the influence of crisis conditions. Unfortunately, as a result of the global economic crisis of 2008–2010 and the political crisis in Ukraine of 2013–2014, this negative trend persisted. Therefore, it is important to investigate the dynamics of changes in key economic indicators of Ukraine and analyze the influence of external factors on its economy.
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    Fuzzy models in logistics: Approaches and examples
    (Maltepe Üniversitesi, 2018) Dorokhov, Oleksandr; Chernov, Vladimir; Dorokhova, Liudmyla
    The difficulties of using classical probability-statistical methods in the problems of logistics are described. The necessity and expediency of using for these problems (under conditions of uncertainty and indistinctness of actual information) the methods based on the theory of fuzzy sets is substantiated. Fuzzy multiple approaches to such tasks as optimization of transport distribution and customer service processes, risk assesment using fuzzy conditional certificates, placement of distribution warehousing centers at the service ground have been conceptually presented. Also, are given features of the application for logistics tasks so-called fuzzy sets of the second order. The proposed approaches provide a more capacious and adequate representation of logistics information, which allows to realize more accurate calculations and thereby increase the economic efficiency of logistical optimization.