Numerical comparison and efficiency analysis of three vertical axis turbine of H-Darrieus type
Angie Guevara-Munoz, Diego Hincapie-Zuluaga, Jorge Sierra-Del Rio, Miguel Angel Rodriguez-Cabal, Edwar Torres-Lopez Hydropower is an important source of energy in Latin America. Many countries in the region, including Brazil, Peru, Colombia, and Chile, rely heavily on hydropower plants to meet their energy needs. However, there are also challenges related to the use of hydropower in […]
An assessment of the governance efficiency of agricultural farms
Hrabrin Bachev Despite the fundamental progression of the theory of economic organizations, Farm continues to be studied as a “production function” and its efficiency is assessed with “factors productivity”. The report incorporates the New Institutional Economics and adequately defines and assesses the economic efficiency of Bulgarian farms. If inputs supply and marketing transactions of a […]
Enhancement efficiency of Michell-Banki turbine using NACA 6512 modified blade profile via CFD
Steven Galvis-Holguin, Jorge Sierra-Del Rio, D. Hincapié-Zuluaga The small hydroelectric power plants (SHPP) are implemented in non-interconnected zones (NIZ) of developing countries. In which, the provision of electrical energy from the national interconnected system is not economically feasible. Therefore, in the literature, hydroelectric generation technologies have been implemented taking advantage of the energy available in […]
EFFICIENCY ASSESSMENT OF IMPLEMENTATION OF THE MECHANISM OF INNOVATIVE RISK MANAGEMENT OF THE FAT AND OIL INDUSTRY IN UKRAINE
Yuliya Zhadan Object of research: risk management processes of enterprises of the oil and fat industry in Ukraine. Investigated problem: to assess the efficiency of the implementation of the mechanism of innovative risk management for enterprises of the oil and fat industry in Ukraine Main scientific results: the paper proposes a scientific and methodological approach to quantifying the […]
DEVELOPMENT OF A MATHEMATICAL MODEL OF THE FUNCTIONING OF MULTI-ANTENNA RADIO COMMUNICATIONS WITH SPECTRALLY EFFECTIVE SIGNALS UNDER THE INFLUENCE OF DESTABILIZING FACTORS
Viktor Ostapchuk, Oleg Sova, Andrii Shyshatskyi, Olexander Harashchuk The necessity of developing a mathematical model for the functioning of multi-antenna radio communication facilities with spectrally effective signals under the influence of destabilizing factors has been substantiated. The results of the study of the influence of destabilizing factors on the multi-antenna systems with spectrally effective […]
DEVELOPMENT OF A MATHEMATICAL MODEL OF THE FUNCTIONING OF ADAPTIVE ROUTING PROTOCOLS IN TELECOMMUNICATION NETWORKS WITH THE POSSIBILITY OF SELF-ORGANIZATION
Oleksii Nalapko The necessity of developing a mathematical model for the functioning of adaptive routing protocols in telecommunication networks with the ability to self-organize has been substantiated. The results of the study of the information transmission route choice in communication networks with the possibility of self-organization under the influence of deliberate interference and cyber-attacks […]
INSTITUTIONAL APPROACHES TO THE ORGANIZATION OF COMPLEX SELF-GOVERNING SOCIAL AND ECONOMIC SYSTEMS
Konstantin Zavgorodniy, Vladimir Tkachenko , Sergey Voit The object of research is complex self-regulatory socio-economic systems (such as: enterprise, company, corporation, civil society). Investigated problem: the problem to be solved consists in substantiating conceptual approaches in the principles of organizing complex self-governing socio-economic systems and substantiating the concepts of their management system. The main scientific results of the […]
EFFECT OF FLOW STEERING ANGLE TOWARD THE HYDROKINETIC TURBINE PERFORMANCE
Rudy Soenoko, Hastono Wijaya The kinetic turbine is one of the solutions for use in low-speed river flows ranging from 0.01–2.8 m/s. This kinetic turbine is used as a conversion equipment to convert the water kinetic energy into an electrical energy. The working principle of a kinetic turbine is utilizing and relies on the water kinetic […]
EXPERIMENTAL STUDY THE PERFORMANCE OF RAM WATER PUMP
Hussein T. Dhaiban Ram water pump is one types of renewable energy that work without any source when used to provide energy from water power for changing the potential energy to kinetic energy to use for agriculture fields. The device must find near the rivers to useful from water to work and the waste water […]