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Lingkai Yang, Sally McClean, Mark Donnelly, Kevin Burke and Kashaf Khan
Concept drift, which refers to changes in the underlying process structure or customer behaviour over time, is inevitable in business processes, causing challenges in ensuring that the learned model is a proper representation of the new data. Due to fact...
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Alexander Skatkov,Dmitry Voronin,Olga Yarmak,Pavel Kuznetsov,Vladislav Evstigneev
Pág. 59 - 64
The Republic of Crimea and Sevastopol are multinational regions and, thus, the problem of inter-ethnic harmony in them was relevant at various periods of history. It remains extremely important at the moment, taking into account the new information, digi...
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Andrzej Swiderski, Anna Borucka, Malgorzata Grzelak and Leszek Gil
This article uses Markov and semi-Markov models as some of the most popular tools to estimate readiness and reliability. They allow to evaluate of both individual elements as well as entire systems?including production systems?as multi-state structures. ...
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David Suda and Luke Spiteri
We implement hidden Markov models (HMMs) and hidden semi-Markov models (HSMMs) on Bitcoin/US dollar (BTC/USD) with the aim of market phase detection. We make analogous comparisons to Standard and Poor?s 500 (S and P 500), a benchmark traditional stock in...
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Harish S. Bhat and Nitesh Kumar
The Markov Tree model is a discrete-time option pricing model that accounts for short-term memory of the underlying asset. In this work, we compare the empirical performance of the Markov Tree model against that of the Black-Scholes model and Heston?s st...
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Nikolay Solakov, Milena Kostova, Kamelia Loginovska, Zlati Markov, Ana Caroline de Oliveira and Yordan Muhovski
Adenosine, known as an endogenous neuroprotective agent and acting as a cytoprotective modulator in organisms, is the subject of considerable scientific interest. Medicinal mushrooms represent a good source of bioactive compounds due to their composition...
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Natalia Hrudkina,Leila Aliieva,Oleg Markov,Khrystyna Malii,Liudmyla Sukhovirska,Mykola Kuznetsov
Pág. 110 - 117
Using the calculation schemes CS-1 (with the presence of a trapezoid module) and CS-1a (with rectangular kinematic modules) has been proposed for the process of the combined radial-direct extrusion of parts with a flange and an axial protrusion. The appl...
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Natalia Hrudkina,Leila Aliieva,Oleg Markov,Irina Marchenko,Alexander Shapoval,Payman Abhari,Mariia Kordenko
Pág. 55 - 62
The simulation of the process of combined radial reverse extrusion of hollow parts with a flange has established two fundamentally different, in terms of the components of the kinematic modules, calculation schemes CDZ-1.i and CDZ-2.j, taking into consid...
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Leila Aliieva,Natalia Hrudkina,Igramotdin Aliiev,Iaroslav Zhbankov,Oleg Markov
Pág. 15 - 22
A possibility has been investigated to use an energy method to calculate the energy-force parameters for the cold extrusion processes involving components of complex configuration. A mathematical model has been proposed for the process of combined sequen...
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Oleh Zachko, Dmytro Kobylkin, Oleh Kovalchuk, Viacheslav Markov
Pág. 49 - 56
The subject of the study is the personnel management information system. Infrastructure design processes of the framework model of complex socio-technical systems for project management and human resource management programs, formation of a database of m...
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Oleg Markov,Yurii Diachenko,Leila Aliieva,Serhii Zharikov,Natalia Hrudkina,Volodymyr Bondarenko,Mykhailo Pohorielov
Pág. 14 - 21
The features of obtaining coatings on carbon steel, structural steel St 3 are studied during diffusion metallization ? simultaneous saturation of steel with boron, chromium and aluminum (boron chromium aluminizing), without the use of special heat t...
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Oleg Markov,Maksym Kosilov,Volodymyr Panov,Volodymyr Kukhar,Sergii Karnaukh,Nadiia Ragulina,Pavlo Bochanov,Pavlo Rizak
Pág. 19 - 25
A new technological process of forging massive stepped hollow rings has been investigated based on modeling. This process implies the saddling of a hollow blank with a stepped deforming tool. We have devised a procedure of experimental modelling based on...
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Natalia Hrudkina,Leila Aliieva,Payman Abhari,Oleg Markov,Liudmyla Sukhovirska
Pág. 49 - 57
The possibilities of using an energy method to forecast defect formation in the form of shrinkage depression in the combined extrusion processes have been investigated. We have proposed a mathematical model of the combined radial-reverse extrusion proces...
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Biljana Stankov, Jasmina Markov, Ivana Milo?evic
Pág. 61 - 69
Since 2007, when Bulgaria became a full member of the EU and 2012, when Serbia was granted the status of candidate for EU membership, these countries have become very attractive investment destinations. The object of this research is the movements of FDI...
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O. S. Chernyshova,M. I. Umanov,V. V. Kovalev,Y. S. Markov,O. V. Gubar
Pág. 63 - 72
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Francesca Gagliardi, Stefano Alvisi, Zoran Kapelan and Marco Franchini
This paper proposes a short-term water demand forecasting method based on the use of the Markov chain. This method provides estimates of future demands by calculating probabilities that the future demand value will fall within pre-assigned intervals cove...
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Francesca Gagliardi, Stefano Alvisi, Zoran Kapelan, Marco Franchini
Pág. 1 - 15
This paper proposes a short-term water demand forecasting method based on the use of the Markov chain. This method provides estimates of future demands by calculating probabilities that the future demand value will fall within pre-assigned intervals cove...
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Ályson Brayner Sousa Estácio,Samiria Maria Oliveira da Silva,Francisco de Assis Souza Filho
Droughts affect basic human activities, and food and industry production. An adequate drought forecasting is crucial to guarantee the survival of population and promote societal development. The Standard Precipitation Index (SPI) is recommended by the Wo...
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Xiaozhou Guo, Yi Liu, Kaijun Tan, Wenyu Mao, Min Jin and Huaxiang Lu
In password guessing, the Markov model is still widely used due to its simple structure and fast inference speed. However, the Markov model based on random sampling to generate passwords has the problem of a high repetition rate, which leads to a low cov...
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Raziyeh AmirTeymoori, Seyed AbdolMajid Jalaee, Mohsen ZayandehRoodi
Pág. 124 - 134
The synchronization of business cycles is one of the new topics that have been raised in recent decades in the field of international business at the same time of increased economic integration between countries. Accordingly, considering the influenced I...
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