Tài liệu miễn phí Năng lượng
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Climate policies of G20 and new threats for russian energy and transportation complex
The aim of this study is tracking the goals of national climate policies and real trends in the carbon intensity of the economies of the G20 countries. A comparative content analysis of the Intended Nationally Determined Contributions (INDC) of the G20 countries was performed. The trends of mean were built for the carbon intensity indicator of G20 countries in the period 1991-2014. The countries, which already passed the peak of the carbon intensity of the economy, were identified.
3/18/2021 11:16:58 AM +00:00
Finance and renewable energy development nexus: Evidence from sub-Saharan Africa
This paper examined the relationship between financial development and renewable energy development using data from 17 selected sub-Saharan Africa countries for a 17-year period from 2000 to 2016. The study sought to understand whether financial development is associated with increased renewable energy generation capacity. The investigation adopted a fixed effects and system generalised methods of moments estimation approaches to understand the relationship between financial development and renewable energy development. The results show that financial development is positively correlated with renewable energy production capacity. These results imply that policy makers in sub-Sahara Africa must foster financial development in their respective countries to ensure increased investment in renewable energy production capacity.
3/18/2021 11:16:51 AM +00:00
Analysis of energy conservation behavior at the Kuwaiti academic buildings
Understanding user’s behavior in buildings is crucial since user behavior significantly contributes to the overall building’s energy consumption. Therefore, this study aims to identify a user’s pro-environmental behavior, in particular, the energy conservation behavior (ECB) of university users in Kuwait. For this reason, this study creates a model whereby two variables, namely, environmental knowledge and awareness of consequences, are introduced and incorporated into the existing theory of planned behavior (TPB).
3/18/2021 11:16:45 AM +00:00
Analysis of the relationship between renewable energy and economic growth in selected developing countries
The main purpose of this study is to determine whether renewable energy consumption has a positive effect on economic growth for selected developing countries (Brazil, India, Indonesia, China, Chile, Mexico, South Africa and Turkey). Fossil energy consumption and CO2 emissions variables are also included in the model established for this purpose. GMM estimator, one of the dynamic panel data methods, was used for empirical analysis of the relationship between these variables.
3/18/2021 11:16:29 AM +00:00
The economic cost and environmental effects of paper consumption and computer usage
The study aims at investigating the environmental and economic effects of paper consumption and computer usage in the Banking sector in Palestine. The research mainly depends on the descriptive and quantitative method. In addition, it collects the data annually and it covers the period from 2016 to 2018. The study has found out that the total cost of using paper in the banks in Palestine is about 3.24 million dollars because they consume about 658.4 tons of paper.
3/18/2021 11:15:54 AM +00:00
The role of renewable energy consumption and FDI in testing the existing of environmental Kuznets curve in Vietnam
This study tests the environmental Kuznets curve (EKC) while examining the role of renewable energy sources and FDI to potentially effect the amount of CO2 emissions in Vietnam. Using Autoregressive Distributed Lag (ARDL) approach, the relationship between CO2 emissions and GDP, FDI and sources of energy consumption has been investigated during 1980-2018 in Vietnam. The results of study reveal that there is non-existence EKC for Vietnam in long run and a sign of inverted U- shape in short run in this period. The analysis also shows that the coefficient of energy consumption from hydro-power renewable sources which correlates to CO2 emissions is negative and significant while FDI leads to increasing carbon dioxide emissions in the long run. That implies Vietnam could have been benefited from a drop in CO2 emissions at some point in the early stage of the period, however, the country has been facing environmental pollution increase as GDP and FDI growth.
3/18/2021 11:15:39 AM +00:00
The dilemma of natural resources: Economic opportunities and challenges post-conflict
The aim of this paper is to find out how natural resources are able to strengthen economic recovery after the conflict while at the same time maintaining peace. Natural resources in the form of coal mining are a new arena for former rebels to create greater economic opportunities after the conflict. The objective of the economic sovereignty of the rebels is to preserve the social and political existence of the community that had faded as a result of the peace agreement signed in 2005, which caused the rebels to lose many of the previously owned effects created by the possession of weapons, troops and loyalist support. This study uses a qualitative method with a case study approach in West Aceh, Indonesia, by interviewing former rebels on economic activities before and after the conflict.
3/18/2021 11:15:14 AM +00:00
Oil and non-oil export and its impact on economic performance in Saudi Arabiaa
Oil and non-oil export played essential role in economic activity in Saudi Arabia with amount average of 841816.0 and 162654.6 Saudi riyal respectively in the period 2005-2019. This study investigates from an empirical point of view the impact of oil and non-oil export on economic performance in Saudi Arabia during the period 2005-2019.
3/18/2021 11:15:07 AM +00:00
Policy learning for generating green electricity
An important challenge for any developing country is to achieve their green energy targets for clean electricity generation. In this respect, Iran is no exception. This paper sets out a reference point for Iran as a less developed country by learning the green electricity production policies from developed countries; Germany and Denmark. We used a mixed research approach. The most significant lessons learnt includes the relevance of the financial and regulatory tools and policies that have been successfully applied in Denmark and Germany. Our findings show the structure of fuel allocation to energy generation plants needs reforming.
3/18/2021 11:15:01 AM +00:00
On the analysis of food and oil markets in Nigeria: What prices tell us from asymmetric and partial structural change modeling?
In this paper, using data spanning from January 2000 to September 2019, we applied asymmetric and partial structural change models to examine the impact of oil price on food prices in Nigeria. Results from the asymmetric model showed that positive margins in crude oil price reduce the price of food, while negative margins co-move with food price in the long-run. The story is different in the short-run, where both positive and negative changes in oil price exert positive effects on food price.
3/18/2021 11:14:54 AM +00:00
Does gold retain its hedge and safe haven role for energy sector indices during COVID-19 pandemic? A crossquantilogram approach
The rest of the paper is structured out as follows: Section 2 reviews the literature. Section 3 outlines the details of the dataset and Methodology adopted while Section 4 discusses the empirical results. Finally, Section 5 summarises findings and provides concluding remarks.
3/18/2021 11:14:40 AM +00:00
The central ASIAN Economies of water-energy security: The future role of hydro and fuel-based systems
The objective of this article is to achieve profitable capital investment in a 250 MW coal-fired thermal power plant situated in east part of Tajikistan. In this context, the article applies a mathematical model to estimate the quantitative advantages of coal alternatives. The cost analysis of the plant was carried out on the basis of total capital investment, operating cost (i.e. coal feedstock, maintenance and labour, and cost of pumping power) and revenue. Furthermore, the article discusses the main concerns of the government of Tajikistan in sustaining its economic development, and finally, describes the future role that hydro-coal power will play in this development.
3/18/2021 11:14:20 AM +00:00
Audit committee chair’s legal expertise and real activities manipulation: Empirical evidence from Malaysian energy and utilities sectors
The study uses a sample of all energy and utilities companies listed on Bursa Malaysia between 2013 and 2018. Ordinary least squares (OLS) regression is applied to analyse the study data. The study finds that AC chairs with legal expertise are positively and significantly associated with REM, suggesting that they have not yet ceased REM practices. The findings add to the corporate governance and earnings management literature, and inform regulators and other readers of financial reports about the monitoring role of the AC chair.
3/18/2021 11:14:07 AM +00:00
Nexus between foreign direct investment, energy consumption, natural resource, and economic growth in Latin American countries
This study examines the nexus between FDI, energy consumption, natural resource, and economic growth in Latin American countries for the period of 1990 to 2018. We apply Structural Equation modeling approach to examine the relationship among these variables. The empirical results suggest that FDI, Energy consumption and Natural resources have significant and positive association with Economic growth in Latin American countries. Likewise, FDI and Energy consumption also show positive and significant effect on Natural resource, while FDI show a positive and statistically significant effect on Energy consumption. The results imply that to fuel the fast-paced economic growth, the respective governments in these countries need to reform their energy sectors by tapping renewable energy resources and deploy green technologies with a view to avoid environmental degradation. In addition, respective government in this region should formulate robust business strategies and environment to encourage FDI inflow.
3/18/2021 11:13:59 AM +00:00
A new formula to quantify the national energy security of the world’s top ten most populous nations
This research is aimed at measuring the EPME variables, producing ES material quantities (Qes). Qes is derived after a 4-stage unification and is defined in a formula. The formula is then applied to calculate the top ten populous nations in the world from 1990 to 2015. Based on the top Qes values, the rankings are Russia (Fed.), USA, Japan, Brazil, China, Indonesia, India, Nigeria, Pakistan, and Bangladesh. The results also highlighted the Qes disparities between nations. A relationship between Qes and National Power Indicator (NPI) was also explored, indicating the ES saturation in the USA and Japan; and the macro energy-policy instability phenomenon in Nigeria. In addition, a comparison of Qes ranking to those of other scholars’ results was presented. Finally, the macro sustainable energy policy implication is also highlighted.
3/18/2021 11:13:52 AM +00:00
Volatilitiy of world food commodity prices and renewable fuel standard policy
This research uses coefficient of variation and volatility analysis with the ARCH GARCH method. Based on the results, the price of food commodities is more volatile after the adoption of the Renewable Fuel Standard 2 (RFS) policy in 2007. The results of the study show that development of biofuels (from corn and soybeans) have a higher level of volatility than the other two commodities (rice and wheat) due to the variance of rice and wheat was lower than corn and soybeans. It means that the greater the relevance of a commodity to the development of biofuels, the higher the price volatility of the commodity. Meanwhile, the expansion of biofuels also made US reduce the amount corn and soybean exports, of course this is what makes the supply of US corn and soybeans decreased and makes the price will increase.
3/18/2021 11:13:30 AM +00:00
The first auction of non-conventional renewable energy in Colombia: Results and perspectives
This paper presents a review of auction in various countries of South America in order to compare final prices for technology. Finally, this paper discusses perspectives for the energy sector in Colombia according to the implications of this auction.
3/18/2021 11:13:23 AM +00:00
The nexus between energy, environment and growth: Evidence from latin-american countries
The purpose of this research is to explore the association among energy, environment and economic growth in Latin-American countries from 1990- 2014 by using multivariate Structure. This study used number of co-integration techniques to confirm log run relationship among environment, and energy. The study findings also show the effect of the energy on environment in the long run by using FMOLS and DOLS. In addition, this research also employed the causality test to study the causal relation among the variables. The outcomes of the various tests of co-integration endorse a longrun relationship among renewable energy (REN) and non-renewable (NREN) consumption and environment. The long run results show that the use of renewable energy source can reduce the CO2 emissions in selected countries. Moreover, the non-renewable energy consumption is increasing CO2 emissions.
3/18/2021 11:13:17 AM +00:00
Macroeconomic factors affecting natural gas export management
Indonesia as a rich country with its natural resources to be one of the countries in the world to play an active role in increasing international trade flows. One of the energy which is very beneficial to human life is a natural gas. The use of this energy will meet to household needs and another important needs for industry. The data presented is a secondary data in the form of time series for 22 years, a period 1995-2017. The variables of this study are domestic consumption, exchange rate, international price, and GDP per capita of the importing country. Then, the analytical method used is auto-regressive distributed lag (ARDL). The results of the analysis shown that in the short term all variables such as domestic consumption, exchange rates, natural gas prices and GDP per capita significantly influence to volume of natural gas exports. While in the long run term, the results which is the same as the short run, that is, all the independent variables such as domestic consumption, the exchange rate, international prices and GDP per capita have a significant effect on the volume of natural gas exports.
3/18/2021 11:13:10 AM +00:00
Government expenditure, manufacturing growth and CO2 emission: A causality analysis in Malaysia
The main objective of the study is to explore government expenditure, CO2 emission and manufacturing output in one model. These comprehensive literature reviews related to this topic of interest prove evidence upon variations towards the causality relationship that exists between government expenditure, CO2 emission and manufacturing output. Most of past literatures had studied on the relationship of these variables, however separately.
3/18/2021 11:12:57 AM +00:00
Guiding principles for establishing energy consumption reduction and increase production performance in manufacturing
This study provides a review, framework and guiding principles for constructing energy consumption reduction disciplines, with examples of application to international industries. It reviews the work of agencies and governments in creating energy efficiency models that help policy makers to assess changes in energy efficiency. A possibility to reduce costs incurred in product manufacturing and energy consumption constitutes energy-efficient consumption at industrial enterprises.
3/18/2021 11:12:35 AM +00:00
Các tham số mật độ mức cập nhật của hạt nhân 153Sm trong mẫu khí Fermi dịch chuyển ngược
Trong nghiên cứu này, các tác giả đánh giá lại giá trị tham số mật độ mức a, tham số mật độ mức tiệm cận aasy và tham số năng lượng dịch ngược trong mẫu khí Fermi dịch chuyển ngược của hạt nhân 153Sm. Quá trình đánh giá dựa trên các số liệu thực nghiệm về sơ đồ mức hạt nhân trong Thư viện số liệu cấu trúc hạt nhân được đánh giá (ENSDF - Evaluated Nuclear Structure Data File), khoảng cách mức trung bình tại năng lượng liên kết của neutron (D0 ), và số liệu cập nhật về sơ đồ mức hạt nhân trong nghiên cứu thực nghiệm phân rã gamma nối tầng được thực hiện trên Lò phản ứng hạt nhân Đà Lạt.
3/18/2021 7:49:38 AM +00:00
Tổng hợp hạt nhân: Nguồn năng lượng của tương lai
Các nhà vật lý hạt nhân đã tiến đến gần thời điểm có thể chế ngự một nguồn năng lượng sạch hầu như vô tận - năng lượng tổng hợp hạt nhân trong tương lai gần (2030-2035). Phản ứng tổng hợp hạt nhân đang được xem là nguồn năng lượng của tương lai khi mà nó có thể giải quyết đồng thời hai vấn đề nóng của nhân loại: biến đổi khí hậu và bảo đảm năng lượng bền vững trong nhiều triệu năm
3/18/2021 7:47:26 AM +00:00
Phân tích xác suất dừng của việc lựa chọn UAV thu thập năng lượng
Bài viết này phân tích hiệu năng của hệ thống truyền thông chuyển tiếp được hỗ trợ bởi các thiết bị bay không người lái (Unmanned Aerial Vehicle - UAV) trong đó chỉ một UAV trong số nhiều UAV được chọn làm thiết bị chuyển tiếp.
3/18/2021 7:44:10 AM +00:00
Khảo sát sự thay đổi công suất lò phản ứng theo vị trí thanh điều khiển sử dụng phần mềm mô phỏng e-CORSIM.
Bài báo khảo sát sự thay đổi công suất của lò phản ứng nước áp lực (PWR) khi thay đổi vị trí của các thanh điều khiển. Thực nghiệm được tiến hành mô phỏng bằng phần mềm e-CORSIM.
3/17/2021 10:14:15 PM +00:00
Khả năng sản xuất 177Lu từ bia lutetium tự nhiên trên lò phản ứng hạt nhân Đà Lạt
Sản phẩm của chúng tôi thu được có hoạt độ riêng 17.7 mCi/mg Lu, độ sạch hạt nhân phóng xạ và độ sạch hóa phóng xạ trên 99.99%. Sản phẩm trước mắt được sử dụng cho các nghiên cứu cơ bản ban đầu về khả năng đánh dấu với DOTATATE và đặc biệt là nghiên cứu về khả năng điều chế 177Lu-EDTMP dùng để điều trị giảm đau xương di căn.
3/17/2021 5:23:59 PM +00:00
Determining the working status of the production organization structure in the mechanized longwall when the negative impact factor has appeared
For the purpose of ensuring sustainable development, one of the important factors is to increase labor productivity and minimize the number of workers directly working in the mine. In the context of increasing requirements for underground coal mining, the number of workers tends to decline due to shifting to other types of economy. Therefore, the mechanization investment in coal mining is the inevitable destination, which guarantees the long - term strategic development of the coal mining industry.
3/17/2021 4:47:25 PM +00:00
Tổng luận Chuyển dịch hệ thống năng lượng - Kinh nghiệm của một số nước Châu Á
Nội dung của tổng luận này trình bày tổng quan chuyển dịch năng lượng toàn cầu; một số bài học về chuyển dịch năng lượng cho Việt Nam. Để nắm chi tiết hơn nội dung, mời các bạn cùng tham khảo tổng luận.
3/17/2021 2:51:22 PM +00:00
Đánh giá hiệu suất của hệ thống solar tracking trục đơn sử dụng quang trở
Bài viết này trình bày về thiết kế, thi công và phân tích hiệu suất của hệ thống solar tracking năng lượng mặt trời trục đơn (Single Axis Solar Tracking System). Hệ thống tracking năng lượng mặt trời sẽ tự động hướng theo vị trí của mặt trời để thu được tối đa cường độ ánh sáng phát xạ từ mặt trời.
3/17/2021 2:36:42 PM +00:00
Nghiên cứu cải tiến giải thuật dò tìm điểm công suất cực đại của tấm pin năng lượng mặt trời sử dụng thuật toán BAT và bộ điều khiển mờ
Bài viết trình bày phương pháp cải tiến giải thuật dò tìm điểm công suất cực đại (MPPT) sử dụng trong các hệ thống pin năng lượng mặt trời (PV). Hệ thống được thiết kế dựa trên bộ điều khiển mờ và thuật toán tối ưu hóa BAT (BATFLC) để điều chỉnh các thông số điều khiển.
3/17/2021 11:40:16 AM +00:00