economics analysis
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2021 ◽  
Vol 9 ◽  
Author(s):  
Hao Pan ◽  
Shichang Xu ◽  
Zidi Wang ◽  
Zijian Liang ◽  
Lingdong Zeng

Based on the perspective of political economics analysis, this article conducts research on the national new energy strategy as the economic situation changes differently from the past. Under the socialist market economy system with Chinese characteristics, the new energy strategy is not only an inevitable choice for China as a responsible major country, but also a key measure to promoting high-quality economic development. Through the analysis of the main dilemmas faced by China’s implementation of new energy strategy, this article proposes to design policies in terms of core technology research, innovative industry financing, cultivating professional talents, and continuous expansion of opening up, to originate a high-quality development path for China.


2021 ◽  
Author(s):  
Mohammed El Hadi Attia ◽  
Abd Elnaby Kabeel ◽  
Ayman Refat Abd Elbar ◽  
Mohamed Abdelgaied

Abstract The present study aims to achieve the highest cumulative yield of the hemispherical distillers, by designing and constructing new reflector mirrors, which are truncated circular cone-shaped reflector mirrors (TCC-RM). To obtain the optimum inclination of TCC-RM that achieves a highest hemispherical distiller’s performance, eight inclination angles (10o, 15o, 20o, 25o, 30o, 35o, 40o and 45o with vertical) was experimentally studied. To achieve this, a series of experimental tests were carried out on the three hemispherical solar distillers, the first represents the reference distiller (traditional hemispherical solar distiller- THSD) and the other two devices are the hemispherical solar distiller with truncated circular cone-shaped reflector mirrors (HSD-TCCRM) with different inclination angles. The experimental results indicate that utilizing TCC-RM with a 25o inclination angle achieve the maximum cumulative yield of 8.35 L/m2 with an improvement of 42.74% compared to THSD. While the utilization of TCC-RM with the inclination angles by 30o, 35o, 20o, 40o, and 15o achieves the cumulative yield of 7.9, 7.3, 7.05, 6.67, 6.6 L/m2 compared with 5.85 L/m2 for THSD. On the contrary, adjusting the inclination angle of TCC-RM at 10o, and 45o affects negatively the cumulative yield of the HSD with TCC-RM in comparison with THSD. Based on the data of cumulative yield, daily efficiency, and the economics analysis its recommended to utilized TCC-RM with a 25o inclination angle to achieve the highest performance and minimum distillate cost of hemispherical solar distillers.


2021 ◽  
Vol 52 (2) ◽  
pp. 373-412
Author(s):  
Jeremiah McLanahan

The most interesting recent developments in economics have come from behavioural economics, which attempts to model how people will behave in real life situations. The insights offered by behavioural economics can also be applied to law. This article discusses law and behavioural economics generally, and then applies it to the New Zealand high-cost loan industry. The high-cost loan industry is responsible for a great deal of harm in New Zealand, and in 2019 Parliament passed sweeping amendments to the Credit Contracts and Consumer Finance Act 2003 to insulate consumers from that harm. Law and behavioural economics suggest alternative strategies to those amendments that can address the harms while retaining the benefits that high-cost loans can provide. This article designed an experimental survey to test one such strategy, and the results and implications for policy are discussed.


Author(s):  
Dr. Osama Mohammed Elmardi Suleiman ◽  
Nafea Mostafa Muki Nafea

Engineering economics, previously known as engineering economy, is a subset of economics concerned with the use and application of economic principles in the analysis of engineering decisions. As a discipline, it is focused on the branch of economics known as microeconomics in that it studies the behavior of individuals and firms in making decisions regarding the allocation of limited resources. Thus, it focuses on the decision making process, its context and environment. It is pragmatic by nature, integrating economic theory with engineering practice. But, it is also a simplified application of microeconomic theory in that it avoids a number of microeconomic concepts such as price determination, competition and demand/supply. As a discipline though, it is closely related to others such as statistics, mathematics and cost accounting. It draws upon the logical framework of economics but adds to that the analytical power of mathematics and statistics. Engineers seek solutions to problems, and the economic viability of each potential solution is normally considered along with the technical aspects. Fundamentally, engineering economics involves formulating, estimating, and evaluating the economic outcomes when alternatives to accomplish a defined purpose are available. The study includes an introduction to the application of economic techniques to the evaluation of design and engineering alternatives, cash flow concepts, interest factors, comparison of alternatives, benefit - cost analysis, and conclusions of the study. One of the objectives of the economic analysis in engineering projects is the good management which consists primarily of making wise decisions; wise decisions in turn involve making a choice between alternatives. Engineering considerations determine the possibility of a project being carried out and point out the alternative ways in which the project could be handled. Economic considerations also largely determine a project's desirability and dictate ho


2021 ◽  
Author(s):  
Rahmatia Safitri ◽  
Denny Setiawan ◽  
Anna C. Situmorang

2021 ◽  
Vol 38 ◽  
pp. 102568
Author(s):  
Wan Syakirah Wan Abdullah ◽  
Miszaina Osman ◽  
Mohd Zainal Abidin Ab Kadir ◽  
Renuga Verayiah ◽  
Nur Fadilah Ab Aziz ◽  
...  

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