scholarly journals Choosing of the FEC critical objects in model researches of energy security problems and its features

2018 ◽  
Vol 58 ◽  
pp. 03004 ◽  
Author(s):  
Natalia Beresneva ◽  
Natalia Pyatkova
Keyword(s):  
Energy Security ◽  
Energy Systems ◽  
Hierarchical System ◽  
Analysis And Evaluation ◽  
Energy Complex ◽  
Its Regions

The overall objective of the proposed work is to formulate the main provisions of the approach to the determination of critical objects for the fuel and energy complex within the framework of hierarchical system studies of the energy security problems for the country and its regions. This approach involves the use of a hierarchical system of models, presupposes a preliminary choice of critical objects for energy systems. The approach is focused on the analysis and evaluation of interrelated systems functioning when implementing threats to energy security (in the form of contingencies), requires the accounting for changes in the work of critical objects for industries. To assess the criticality of these objects for the energy complex as a whole, a criterion is proposed for the significance of objects by the most important model indicators.

scholarly journals Analysis of the scale of the implementation of the energy security threats in Russia up to 2030 and the main directions for the neutralization of these threats

2018 ◽  
Vol 69 ◽  
pp. 02011 ◽  
Author(s):  
Viktor Rabchuk ◽  
Sergey Senderov
Keyword(s):  
Energy Security ◽  
Energy Systems ◽  
Primary Energy ◽  
Energy Resources ◽  
Security Threats ◽  
Factors Affecting ◽  
Energy Complex ◽  
The Future ◽  
Main Factors

In the paper the scales of implementation of strategic threats to energy security are compared for different time stages. The main factors affecting the strengthening or weakening of these threats are shown. The estimation of the country’s total needs in primary energy resources and the required volumes of gas to fully cover these needs (taking into account the capabilities of other energy systems of the fuel and energy complex) is made. The total possible levels of Russian gas exports for the future are estimated. The possibilities of fuel and energy complex industries for the perspective satisfaction of the needs of domestic and export consumers are considered in detail.

The Politics of Energy Security

2019 ◽  
pp. 247-274 ◽  
Author(s):  
Jessica Jewell ◽  
Elina Brutschin
Keyword(s):  
Energy Security ◽  
Energy Systems ◽  
Future Research ◽  
Policy Makers ◽  
Social Actors ◽  
Academic Communities ◽  
Policy Goals ◽  
Main Driver ◽  
Productive Research

Energy security has long been a main driver of energy policies, but its meaning has been contested by policy makers and scholars. The concept incorporates both material and intersubjective aspects, finding different expressions in different contexts and attracting the interest of diverse social actors and academic communities. This chapter identifies, compares, and contrasts five major approaches for analyzing energy security rooted in different scholarly traditions. It argues that in order to facilitate a dialogue among these approaches as well as policy comparison and learning, it is useful to conceptualize energy security as “low vulnerability of vital energy systems.” This definition opens avenues for productive research, unpacking the interplay between material and intersubjective aspects of “vulnerability” and “vitality” of energy systems. Future research should investigate the role of material factors alongside power, values, and trust in defining energy security; explain the gap between energy securitization and action; and explore the interaction between energy security and other energy policy goals.

scholarly journals Influence of the Share of Renewable Energy Sources on the Level of Energy Security in EECCA Countries

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 903 ◽  
Author(s):  
Ivan Trifonov ◽  
Dmitry Trukhan ◽  
Yury Koshlich ◽  
Valeriy Prasolov ◽  
Beata Ślusarczyk
Keyword(s):  
Renewable Energy ◽  
Energy Security ◽  
Structural Characteristics ◽  
Renewable Energy Sources ◽  
Energy Resource ◽  
Energy Sources ◽  
Structural Content ◽  
High Degree

In this study we aimed to determine the extent to which changes in the share of renewable energy sources, their structural complex, and the level of energy security in Eastern Europe, Caucasus and Central Asia (EECCA) countries in the medium- and long-term are interconnected. The study was performed through modeling and determination of the structural characteristics of energy security in the countries. The methodology of the approach to modeling was based on solving the problem of nonlinear optimization by selecting a certain scenario. For the study, the data of EECCA countries were used. The ability of EECCA countries to benefit from long-term indirect and induced advantages of the transformation period depends on the extent to which their domestic supply chains facilitate the deployment of energy transformation and induced economic activity. This study provides an opportunity to assess the degree of influence of renewable energy sources on the level of energy security of countries in the context of energy resource diversification. The high degree of influence of renewable energy sources on energy security in the EECCA countries has been proven in the implementation of the developed scenarios for its increase. Energy security is growing. At the same time, its level depends not only on an increase in the share of renewable sources but also on the structure of energy resources complex of countries, and the development of various renewable energy sources. Therefore, today the EECCA countries are forced not only to increase the share of renewable energy sources but also to attach strategic importance to the structural content of their energy complex.

scholarly journals The Ability of Honey Bee Drones to Ejaculate

2015 ◽  
Vol 59 (2) ◽  
pp. 127-133 ◽  
Author(s):  
Krystyna Czekońska ◽  
Bożena Chuda-Mickiewicz
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Reproductive Organs ◽  
Seminal Vesicles ◽  
Analysis And Evaluation ◽  
Anatomical Changes ◽  
Manual Method ◽  
Delayed Development

Abstract The effectiveness of two methods of collecting semen from honeybee Apis mellifera drones was compared, and the reasons for problems with ejaculating semen were analysed. Among 275 drones, 100 were stimulated to release semen using a manual method, 100 with the use of chloroform, and from 75 drones the reproductive organs were dissected for analysis and evaluation. It was found that the principal causes of problems that drones had with ejaculating their semen were anatomical changes or a delay in the development of the mucus glands. It was also found that the method employing chloroform was less efficient in the first phase of eversion of the endophallus, compared with the manual method. The method with the use of chloroform allows the determination of the proportion of drones, which do not evert the endophallus because of poor or delayed development of mucus glands, as well as the proportion of drones which evert the organ, but do not ejaculate semen because of the absence of semen in the seminal vesicles.

scholarly journals Mexico’s energy reform: experience and lessons of the energy sector transformation in South America

2018 ◽  
Vol 26 (4) ◽  
pp. 609-619
Author(s):  
Elvis Ojeda Kalluni ◽  
Elmira A Chadaeva
Keyword(s):  
South America ◽  
Energy Security ◽  
Energy Demand ◽  
Energy Sector ◽  
Important Place ◽  
Safe Delivery ◽  
Energy Complex ◽  
Current State ◽  
History Of ◽  
Energy Reform

The study of fuel and energy complex of Mexico occupies a very important place in the world’s leading research centers. Among Russian and foreign studies there are a number of works that consider the problems and peculiarities of fuel and energy complex of the countries of Latin America including Mexico. This article is devoted to the analysis of Mexico’s energy reform and use their experiences to transform the energy sector of the countries of South America. Presents the history of the Mexican energy reform. Discusses basic principles of energy reform and energy security of the country. It also examines the factors that Mexico should include in its energy policy and management system to ensure the safe delivery of energy across the country. Offers a brief overview of the current state of TEK of Mexico. Mexico has a large and varied potential for producing energy from renewable sources. With the recent opening of the energy sector, the country has the necessary conditions to attract major investments to develop projects on renewable energy. The liberalization of the sector allows Mexico to meet the growing energy demand and to diversify its productive matrix, creating at the same time as energy security and reduce greenhouse gases, positively affecting the environment. Reform of the energy sector of Mexico and the analysis of the sector in this country can be of great importance for the transformation of the energy sector in many countries of the region, especially in places such as Argentina, Brazil and Venezuela.

scholarly journals From Energy Security to the Security of Energy Services: Shortcomings of Traditional Supply-Oriented Approaches and the Contribution of a Socio-Technical and User-Oriented Perspectives

2014 ◽  
Vol 27 (1) ◽  
pp. 97-108
Author(s):  
Yael Parag
Keyword(s):  
Energy Security ◽  
Energy Systems ◽  
Point Of View ◽  
Complex Nature ◽  
Low Carbon ◽  
Discussion Paper ◽  
Energy Services ◽  
The Public ◽  
Cultural Aspects ◽  
Low Carbon Energy

Traditional literature and policy approach to energy security focus on the security of energy supply. It is argued here that a supply-centric approach to energy security is too narrow to account for the complex nature of energy systems and tends to overlook energy users, their expectations from, interaction with and roles in future low carbon energy systems. From users’ point of view, be they households, businesses or governments, the supply of kWh or oil barrels is often meaningless. What matters is not the source of energy, but rather the services provided by it. Therefore, securing energy services seems to be the public and the government’s concern, and the security of supply is only one mean to achieving it. Stemming from science, technology and society studies, this discussion paper suggests that applying a multi-level socio-technical and user-oriented perspectives which focus on the energy services and considers also psychological, social and cultural aspects of energy consumption, could reveal new and overlooked actors, roles, means and strategies that may provide and contribute to energy services security.Keywords: energy security, energy services, socio-technical systems

scholarly journals Experimental determination of the efficiency of the solar collector integrated into the light transparent building facade

2019 ◽  
Vol 14 (2) ◽  
pp. 31-38
Author(s):  
Vasyl Zhelykh ◽  
Peter Kapalo ◽  
Stepan Shapoval ◽  
Iryna Venhryn ◽  
Khrystyna Kozak
Keyword(s):  
Renewable Energy ◽  
Solar Collector ◽  
Heat Supply ◽  
Energy Systems ◽  
Heat Supply System ◽  
Optimal Operation ◽  
Supply System ◽  
Energy Sources ◽  
Further Development

AbstractOne of the most promising energy sources is solar energy, which is confirmed by the growth in the development of renewable energy for European countries. The main goal of research is to design and implement the latest energy systems for passive buildings using renewable energy. In this paper is documented the optimal operation stages of the solar heat supply system were investigated with recommendations for further development of the design and construction of passive buildings in Ukraine South.

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