scholarly journals Barrier Analysis for the Deployment of Renewable-Based Mini-Grids in Myanmar Using the Analytic Hierarchy Process (AHP)

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1400 ◽  
Author(s):  
Masako Numata ◽  
Masahiro Sugiyama ◽  
Gento Mogi

Energy access remains a challenge for many countries, as recognized by sustainable development goal 7 of the United Nations Development Programme. Although the Myanmar government has set a target of 100% electrification by 2030, less than half of the households are currently connected to the national grid. To expedite electrification, decentralized approaches should be considered. Mini-grids are an effective alternative that can fill the gap between a solar home system and the national grid; however, many of the existing mini-grids in Myanmar are powered by diesel generators. Diesel fuel is significantly more expensive in rural areas than in urban areas due to high transportation costs. Although mini-grids powered by solar photovoltaics and batteries are cost-competitive with diesel generators, the deployment of renewable energy-based mini-grids is slow. In this study, we analyzed the barriers to mini-grid deployment and prioritized the barriers. We conducted a questionnaire survey with stakeholders using the analytic hierarchy process to identify the prioritization of each barrier factor. The K-means clustering method was used to determine tendencies and showed that there was no single, dominant solution. Our results confirm the difficulty of mini-grid deployment and suggest multi-pronged approaches that go beyond economic considerations.

2021 ◽  
Vol 258 ◽  
pp. 09043
Author(s):  
Ali Maaruf ◽  
Pavel Oleynik

In the construction industry, there are two methods for constructing basements (Top-Down) and (Bottom-UP). The difference between them lies in the sequence of works, since in the (Bottom-Up) method the end of the excavation work is the necessary condition for the beginning of the substructure construction, and this is different from the (Top Down) method where excavation and construction of the substructure and the superstructure are carried out in parallel, which significantly reduces the project duration but at the same time increases the construction cost. Also there is a difference in terms of use for each of these two methods, for example, it is preferable to use the (Top-Down) in dense urban areas, where there is not enough space for the construction and where there are concerns that the adjacent buildings may be deformed as a result of construction, and this is what the (Bottom-Up) method cannot provide. In order to determine the optimal method from a mathematical point of view, 7 main criteria and 25 sub-criteria were identified, and the Analytic Hierarchy Process was used to solve this multi-criteria problem. Using the Expert Choice software, we found that the (Top-Down) method is preferred by 14.8% more than (Bottom-Up), and a sensitivity analysis was performed to determine which criteria dominated our optimal result.


2019 ◽  
pp. 1-13
Author(s):  
Luz Judith Rodríguez-Esparza ◽  
Diana Barraza-Barraza ◽  
Jesús Salazar-Ibarra ◽  
Rafael Gerardo Vargas-Pasaye

Objectives: To identify early suicide risk signs on depressive subjects, so that specialized care can be provided. Various studies have focused on studying expressions on social networks, where users pour their emotions, to determine if they show signs of depression or not. However, they have neglected the quantification of the risk of committing suicide. Therefore, this article proposes a new index for identifying suicide risk in Mexico. Methodology: The proposal index is constructed through opinion mining using Twitter and the Analytic Hierarchy Process. Contribution: Using R statistical package, a study is presented considering real data, making a classification of people according to the obtained index and using information from psychologists. The proposed methodology represents an innovative prevention alternative for suicide.


2020 ◽  
Vol 12 (12) ◽  
pp. 235
Author(s):  
Muhammad Atiq Ur Rehman Tariq ◽  
Cheuk Yin Wai ◽  
Nitin Muttil

Urbanization is a challenge faced by most countries worldwide and leads to several problems. Due to rapid communication capabilities, conforming the megacities into Ubiquitous cities (U-cities) seems to be a potential solution to mitigate the problems caused by urbanization. Extensive reliance and dependencies of U-cities on information and communication technologies (ICTs) bring forth a new set of risks and vulnerabilities to these megacities. This research investigates the vulnerabilities of ICTs against man-made and natural hazards in a systematic way using the Analytic Hierarchy Process. The study identifies the vulnerabilities of different ICTs in U-cities and helps in improving the system’s resistivity against various hazards. The task is performed by evaluating the level of disruption on the different technologies and areas under the identified man-made and natural hazards. The research provides an insight into the working mechanisms of involved ICTs. It also helps to manage U-cities with more secure and sustainable services. The research identified that the new ICTs-based hazards have emerged and have become among the most influential hazards. The research has concluded that the vulnerabilities of U-cities are significantly different from that of conventional cities and need further studies to develop further understandings. The research recommends similar vulnerability studies for regional areas as well.


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