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Ilyushin Pavel Yurievich, Vyatkin Kirill Andreevich and Kozlov Anton Vadimovich
The modern oil industry is characterized by a strong trend towards the digitalization of all technological processes. At the same time, during the transition of oil fields to the later stages of development, the issues of optimizing the consumed electric...
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Ivan Pavlenko, Olaf Ciszak, Vladyslav Kondus, Oleksandr Ratushnyi, Oleksandr Ivchenko, Eduard Kolisnichenko, Oleksandr Kulikov and Vitalii Ivanov
The reliability of pumping units at nuclear power plants (NPPs) is critical in terms of their energy efficiency and safety. Remarkably, WWER-1000 reactors at Ukrainian NPPs are equipped with outdated pumping units that have already served their full-serv...
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Ivan Pavlenko, Serhii Kononenko, Krystian Czernek, Stanislaw Witczak, Sergey Dobrotvorskiy, Yevhenia Basova, Vitalii Ivanov, Andzelika Krupinska, Magdalena Matuszak, Sylwia Wlodarczak and Marek Ochowiak
Ensuring the vibration reliability of power equipment is one of the fundamental problems in modern power machinery. This problem has become more critical due to a permanent increase in the machining performance of high-speed milling of axial turbine blad...
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Vyacheslav Arsenyev, Ján Pitel, Oleksandr Korol, Serhii Sharapov, Jana Mi?áková, Ivan Pavlenko and Vitalii Ivanov
This article deals with improving waste heat transformation in heat-using thermotransformers. Based on the directives of the European Commission on refrigeration equipment requirements, the possibility of using carbon dioxide (R744) in heat-using thermot...
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Michele Bonnin, Fabio L. Traversa and Fabrizio Bonani
Circuit theory and nonlinear dynamics are instrumental to design efficient energy harvesters for ambient mechanical vibrations. In this work, we show that an impedance matching networks can be designed that maximizes the harvested power, and improves the...
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Heangwoo Lee, Sowon Han and Janghoo Seo
Some recent research in the area of light shelves has been focused on applying photovoltaic modules to light shelves to save building energy. However, due to the modules installed on the light shelf reflectors, most such light shelves have failed to impr...
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Wenhui Zhao, Jibin Ma, Zhanyang Wang, Youting Li and Weishi Zhang
Hydrogen energy is a clean, zero-carbon, long-term storage, flexible and efficient secondary energy. Accelerating the development of the hydrogen energy industry is a strategic choice to cope with global climate change, achieve the goal of carbon neutral...
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V. Y. Ulyanov
Pág. 84 - 91
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Y. V. Litvinova, O. D. Baranovsky
Pág. 22 - 31
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Dominika Matuszewska and Piotr Olczak
Power conversion systems based on the Organic Rankine Cycle (ORC) have been identified as a potential technology especially in converting low-grade renewable sources or waste heat. However, it is necessary to improve efficiency of ORC systems. This paper...
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Cheng-Jung Yang, Tzu-Chun Yang, Po-Tuan Chen and K. David Huang
With the goal of increasing energy efficiency and passenger comfort in an automobile cabin, we developed a regional air-conditioning design to control cold air in specific regions, and an air management strategy that can keep air circulation when the car...
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S. M. Epoyan,V. A. Yarkin,G. I. Sukhorukov,S. P. Babenko
Pág. 24 - 32
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Pratystya Ika Wardhani,Abdul Mongid
Pág. 379 - 389
The purpose of this research is to examine the right strategy in increasing production efficiency in Sharia commercial banks in Indonesia. This research was conducted in two stages of testing. The first stage is estimating the level of production efficie...
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Byung Moo Lee and Youngok Kim
Large-scale (LS) multi-user (MU) multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) is considered to be a desirable signal transmission scheme because it can significantly improve the energy efficiency (EE) and spectral...
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Gottfried Sachs
The power required by flapping and fixed wing vehicles in level flight is determined and compared. Based on a new modelling approach, the effects of flapping on the induced drag in flapping wing vehicles are mathematically described. It is shown that fla...
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N. G. Cherkunova
Pág. 37 - 42
The article deals with the problems connected with the marketing strategy formation under the higher educational institutions functioning. There are considered the main preconditions to implement the full-scale marketing investigation into the educationa...
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Olof Moen
Pág. 861 - 873
The efficiency of a transport system is dependent on how resources in the system are utilized. The freight transport sector in Sweden is fragmented, composed predominantly of small operators affiliated with intermediary companies that handle sales and co...
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O. I. Kharchenko
Pág. 52 - 59
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Mathew Drennan, Charles Brecher
This paper explores the relationship between the scale of public transit services in urban areas of the U.S. and the efficiency of those economies, with efficiency measured by commercial office rents. Panel regressions are estimated in which real office ...
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Tapan Biswas, Jolian McHardy
Pág. 39 - 51
We examine the effects of and the incentives for increasing input efficiency within a spatially segregated Cournot duopoly with monopoly trade unions whose utility functions depend on both wages and employment. We show that with neoclassical as wel...
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