Oleksandr Kozak
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View article: Prospects for use of smart meters to reduce electricity losses in Ukraine’s power grids
Prospects for use of smart meters to reduce electricity losses in Ukraine’s power grids Open
The aim of this study was to determine the potential for reducing technical and commercial electricity losses through the integration of smart metering technologies into the existing distribution network infrastructure. The research employ…
View article: Modelling the optimal switching scheme of Ukrainian power grids during blackout in one city/region
Modelling the optimal switching scheme of Ukrainian power grids during blackout in one city/region Open
The purpose of the study was to develop effective algorithms and strategies to minimize the negative effects of emergency power outages. A methodology had been developed that defines the steps and processes for efficient modelling and sele…
View article: Constraining safe and unsafe overshoots in saddle-node bifurcations
Constraining safe and unsafe overshoots in saddle-node bifurcations Open
We consider a dynamical system undergoing a saddle-node bifurcation with an explicitly time dependent parameter~$p(t)$. The combined dynamics can be considered as a dynamical systems where $p$ is a slowly evolving parameter. Here, we inves…
View article: Possibilities of landfills and solid waste sites for energy production in Ukraine
Possibilities of landfills and solid waste sites for energy production in Ukraine Open
Dynamic changes in the energy sector towards the priority of renewable energy are stimulated by the political decisions in the European integrated environment aimed at achieving climate neutrality within the framework of the European Green…
View article: Assessment of the Condition of the Project Environment for the Implementation of Technologically Integrated Projects of the “European Green Deal” Using Maize Waste
Assessment of the Condition of the Project Environment for the Implementation of Technologically Integrated Projects of the “European Green Deal” Using Maize Waste Open
In the research carried out by the authors, an approach to the assessment of the project environment of technologically integrated “European Green Deal” projects using corn waste was developed, which takes into account the changing project…
View article: DEVELOPING THE MATHEMATICAL MODEL OF SOLAR PHOTOVOLTAIC INSTALLATION
DEVELOPING THE MATHEMATICAL MODEL OF SOLAR PHOTOVOLTAIC INSTALLATION Open
Розробка математичної моделі сонячної фотоелектричної установки = Developing the mathematical model of solar photovoltaic installation / І. Д. Гарасимчук, П. В. Потапський, Р. В. Семенишена, М. В. Вусатий, О. В. Козак // Зб. наук. пр. НУК.…
View article: Determinig the parameters of the acoustic system for the primary treatment of wool
Determinig the parameters of the acoustic system for the primary treatment of wool Open
We have studied the process of primary treatment of wool in order to remove soil and manure contaminants, vegetable impurities, fat, and sweat. The primary treatment of wool performs a key role in retaining the natural properties of wool f…
View article: Theoretical analysis of the adaptive system for suppression of the interference concentrated on a spectrum
Theoretical analysis of the adaptive system for suppression of the interference concentrated on a spectrum Open
The object of research is the process of interference suppression in a passive radiometric receiver, centered over the interference spectrum, with a random or varying frequency. Noise immunity can be increased by means of special circuits …