scholarly journals Systematic review of energy efficiency (E.E.). Basis for an alternative vision of E.E. in Colombia

2020 ◽  
Vol 25 (2) ◽  
pp. 329-336
Author(s):  
Cristian Méndez-Rodríguez ◽  
Carlos F. Rengifo-Rodas ◽  
Juan Carlos Corrales-Muñoz ◽  
Apolinar Figueroa-Casas

The management of natural resources, especially energy resources, is a challenge for today's society. For this reason, Energy Efficiency (E.E.) is considered as a key tool to promote economic growth, reduce the consumption of natural energy resources, and help to solve multiple environmental impacts. In this study, a systematic mapping of the literature concerning E.E. is carried out. Based on the research questions formulated in the systematic mapping, a knowledge gap is identified, which is that the problems linked to energy are not being addressed from a systemic and interdisciplinary paradigm. This calls for the development of methodological, sociological, and technological processes that allow understanding of E.E. from a systemic perspective. Finally, the basis for an alternative vision of E.E. in Colombia is proposed, which tends towards the sustainability and conservation of natural energy resources.

2016 ◽  
Vol 23 (1) ◽  
pp. 21-35
Author(s):  
Janusz S. Szmyd

Abstract The development of civilisation is linked inextricably with growing demand for electricity. Thus, the still-rapid increase in the level of utilisation of natural resources, including fossil fuels, leaves it more and more urgent that conventional energy technologies and the potential of the renewable energy sources be made subject to re-evaluation. It is estimated that last 200 years have seen use made of more than 50% of the available natural resources. Equally, if economic forecasts prove accurate, for at least several more decades, oil, natural gas and coal will go on being the basic primary energy sources. The alternative solution represented by nuclear energy remains a cause of considerable public concern, while the potential for use to be made of renewable energy sources is seen to be very much dependent on local environmental conditions. For this reason, it is necessary to emphasise the impact of research that focuses on the further sharpening-up of energy efficiency, as well as actions aimed at increasing society’s awareness of the relevant issues. The history of recent centuries has shown that rapid economic and social transformation followed on from the industrial and technological revolutions, which is to say revolutions made possible by the development of power-supply technologies. While the 19th century was “the age of steam” or of coal, and the 20th century the era of oil and gas, the question now concerns the name that will at some point come to be associated with the 21st century. In this paper, the subjects of discussion are primary energy consumption and energy resources, though three international projects on the global scale are also presented, i.e. ITER, Hydrates and DESERTEC. These projects demonstrate new scientific and technical possibilities, though it is unlikely that commercialisation would prove feasible before 2050. Research should thus be focused on raising energy efficiency. The development of high-efficiency technologies that reinforce energy security is presented, with it being assumed that these new high-efficiency technologies are capable of being applied globally in the near future.


Author(s):  
KVACH Yaroslav ◽  
KUZMYNCHUK Nataliia ◽  
KUTSENKO Tetiana

Background. The energy sector in the structure of the domestic economy remains one of the most vulnerable sectors of the domestic economy. Therefore, solving the problem of reducing energy intensity and energy efficiency of the domestic economy will solve the problem of economic growth of the domestic economy in a global recession due to the effects of the coronavirus pandemic and restrictive measures, which significantly reduced national production. Analysis of recent research and publications. Despite a wide range of research on energy conservation and energy efficiency, most of them are limited to general recom­mendations for sustainable development of the national economy. The aim of this article is to develop the theoretical foundations of energy efficiency as a factor in increasing the financial potential and intensification of economic development of the domestic economy in terms of the need to overcome the effects of the global economic recession. The aim of the paper is to develop theoretical foundations of energy efficiency as a factor of increasing the financial potential and intensification of economic development of the domestic economy while there is the need to overcome the effects of the global economic recession. Materials and methods. The information base of the study were scientific public­cations of foreign and domestic scientists in the field of research on the development of the electricity market, areas of energy efficiency. The research was conducted using such general scientific methods as: generalization and comparison; deductive and inductive analysis; method of statistical analysis to identify and summarize trends in the electricity market, the choice of areas of energy efficiency and the development of energy saving measures. Results. The article presents the results of a study of energy efficiency and energy saving as a basis for economic growth of the domestic economy in terms of overcoming the effects of the global economic crisis. The reasons for the high energy intensity of GDP, which poses a threat to the country’s national security, in particular in the energy sector, have been identified. Conclusion. The necessity of transformation of the electricity market on the prin­ciples of market pricing, energy efficient and energy efficient use and consumption of energy resources, implementation of energy efficiency programs and use of renewable energy sources is proved. Prospects for further research are the development and implementation of modern tools for implementing energy efficient and energy efficient use and consumption of energy resources.


2014 ◽  
Vol 9 (2) ◽  
pp. 115-121 ◽  
Author(s):  
Ana Horta ◽  
Harold Wilhite ◽  
Luísa Schmidt ◽  
Françoise Bartiaux

Energy consumption inconspicuously bridges nature and culture. Modern societies and cultures depend on intensive energy use from the extraction of natural resources. In fact, the industrialization process required large amounts of energy, but main sources such as oil and coal, have been gradually depleted and found to be heavily polluting the environment. Despite their environmental impacts, these resources have provided cheap and abundant power to fuel technological progress and economic growth. (See Agustoni and Maretti [2012] for a good historical summary of the relations between energy production and usages.)


2019 ◽  
Vol 29 (2) ◽  
pp. 226-246
Author(s):  
Guilherme Magon Whitacker

Moçambique possui algumas das maiores reservas de recursos naturais de potencial energético do mundo, sobretudo, carvão mineral, gás natural e, mais recentemente descoberto, petróleo, ainda que em menor quantidade. Os recursos naturais energéticos são, ou podem ser, instrumentos de poder ou armas políticas. Destarte, determinam e condicionam ações sobre o uso dos territórios. Território e poder determinam relações instáveis e motivam pretextos para o surgimento de práticas e estratégias geopolíticas e todo recurso é produto de uma relação de poder sobre determinado território. Assim, os recursos naturais energéticos são considerados estratégicos, produtos das relações sociais de produção e do poder que interfere diretamente na posse dos mesmos e controle territorial, o que envolve, também, a conflitualidade gerada a partir da intensificação da questão agrária resultante desses processos.Palavras–chave: Geopolítica dos recursos naturais, questão agrária, território, poder, MoçambiqueAbstract Mozambique has some of the world's largest reserves of natural resources with potential for energy, mainly mineral coal, natural gas and, more recently, oil, although in a smaller amount. Natural energy resources are or may be, instruments of power or political weapons. Thus, they determine and condition actions on the use of territories. Territory and power determine unstable relationships and motivate pretexts for the emergence of geopolitical practices and strategies, and every resource is the product of a power relationship over a given territory. Thus, natural energy resources are considered strategic, products of social relations of production and power that directly interfere in their possession and territorial control, which also involves the conflict generated by the intensification of the agrarian issue resulting from these processes.Keywords: Geopolitics of natural resources, agrarian question, territory, power, Mozambique


10.28945/4505 ◽  
2020 ◽  
Vol 15 ◽  
pp. 039-064
Author(s):  
Rogerio Ferreira da Silva ◽  
Itana Maria de Souza Gimenes ◽  
José Carlos Maldonado

Aim/Purpose: This paper presents a study of Virtual Communities of Practice (VCoP) evaluation methods that aims to identify their current status and impact on knowledge sharing. The purposes of the study are as follows: (i) to identify trends and research gaps in VCoP evaluation methods; and, (ii) to assist researchers to position new research activities in this domain. Background: VCoP have become a popular knowledge sharing mechanism for both individuals and organizations. Their evaluation process is complex; however, it is recognized as an essential means to provide evidences of community effectiveness. Moreover, VCoP have introduced additional features to face to face Communities of Practice (CoP) that need to be taken into account in evaluation processes, such as geographical dispersion. The fact that VCoP rely on Information and Communication Technologies (ICT) to execute their practices as well as storing artifacts virtually makes more consistent data analysis possible; thus, the evaluation process can apply automatic data gathering and analysis. Methodology: A systematic mapping study, based on five research questions, was carried out in order to analyze existing studies about VCoP evaluation methods and frameworks. The mapping included searching five research databases resulting in the selection of 1,417 papers over which a formal analysis process was applied. This process led to the preliminary selection of 39 primary studies for complete reading. After reading them, we select 28 relevant primary studies from which data was extracted and synthesized to answer the proposed research questions. Contribution: The authors of the primary studies analyzed along this systematic mapping propose a set of methods and strategies for evaluating VCoP, such as frameworks, processes and maturity models. Our main contribution is the identification of some research gaps present in the body of studies, in order to stimulate projects that can improve VCoP evaluation methods and support its important role in social learning. Findings: The systematic mapping led to the conclusion that most of the approaches for VCoP evaluation do not consider the combination of data structured and unstructured metrics. In addition, there is a lack of guidelines to support community operators’ actions based on evaluation metrics.


1998 ◽  
Vol 37 (3) ◽  
pp. 305-307
Author(s):  
Afia Malik

Given the demographic realities in the developing world, it is not possible to solve the problems of poverty in these countries following the neoclassical model of economic growth. Since the majority of people are ruralites in these countries, the focus should be on rural development directly rather than on waiting for the benefits to trickle down to the rural poor. What is needed is to improve the quality of life and productivity of the small-holders or landless whose livelihood is based on natural resources which are depleting and require urgent attention. More options should be available for the rural people in their own area.


2019 ◽  
pp. 30-44
Author(s):  
Konstantin Igorevich Alekseev ◽  
Andrey Nikolaevich Osipov ◽  
B.O. Hashir ◽  
Elena Nikolaevna Zakharchenko

2021 ◽  
Vol 13 (13) ◽  
pp. 7102
Author(s):  
Ana Carolina V. Nadalini ◽  
Ricardo de Araujo Kalid ◽  
Ednildo Andrade Torres

The objective of this paper is to present a review of current research on the valuation of ecosystem services, using emergy evaluation methodology (EME). A bibliometric analysis and a systematic review were carried out between 2000 and 2020, using all of Web of Science database subfields that collected 187 papers, selected through the keywords “emergy” and “ecosystem services”. In the second part of the research, we carried out a new search on Web of Science of the 187 initial articles produced, with the words “valuation” and “economic”, in order to analyze those directly related to the evaluation of ecosystem services. The results showed that the EME method is an effective tool to evaluate ecosystem services, since it relates economic and ecological aspects in the evaluations. The research also indicated that the use of isolated methods does not appear to be the most appropriate solution, and that emergy used in combination with other methodologies can be used to obtain more accurate and comprehensive results to evaluate natural resources.


Author(s):  
Martina Caruso ◽  
Rui Pinho ◽  
Federica Bianchi ◽  
Francesco Cavalieri ◽  
Maria Teresa Lemmo

AbstractA life cycle framework for a new integrated classification system for buildings and the identification of renovation strategies that lead to an optimal balance between reduction of seismic vulnerability and increase of energy efficiency, considering both economic losses and environmental impacts, is discussed through a parametric application to an exemplificative case-study building. Such framework accounts for the economic and environmental contributions of initial construction, operational energy consumption, earthquake-induced damage repair activities, retrofitting interventions, and demolition. One-off and annual monetary expenses and environmental impacts through the building life cycle are suggested as meaningful performance metrics to develop an integrated classification system for buildings and to identify the optimal renovation strategy leading to a combined reduction of economic and environmental impacts, depending on the climatic conditions and the seismic hazard at the site of interest. The illustrative application of the framework to an existing school building is then carried out, investigating alternative retrofitting solutions, including either sole structural retrofitting options or sole energy refurbishments, as well as integrated strategies that target both objectives, with a view to demonstrate its practicality and to explore its ensuing results. The influence of seismic hazard and climatic conditions is quantitatively investigated, by assuming the building to be located into different geographic locations.


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