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3. Design and Performance Analysis of GaAs-Based P-i-N Photovoltaic Using AlGaAs as Window Layer

Author

Chakma, Rocky, Mahtab, S. S., Alam, M. J., Akter, Rupa, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Bindhu, V., editor, Tavares, João Manuel R. S., editor, Boulogeorgos, Alexandros-Apostolos A., editor, and Vuppalapati, Chandrasekar, editor

Published
2021
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4. Impact Analysis of Anti-Reflection Coating on P-i-N Solar Device

Author

Mahtab, S. S., Akter, Rupa, Mahbub, Tauhidul, Raihan, Ahamed, Anonto, Rapsan Amin, Alam, M. J., Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Bindhu, V., editor, Tavares, João Manuel R. S., editor, Boulogeorgos, Alexandros-Apostolos A., editor, and Vuppalapati, Chandrasekar, editor

Published
2021
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5. Blockchain Implementation Challenges in Developing Countries: An evidence-based systematic review and bibliometric analysis

Author

Abu Naser Mohammad Saif, K. M. Anwarul Islam, Afruza Haque, Hamida Akhter, S.M. Masudur Rahman, Nusrat Jafrin, and Rasheda Akter Rupa and Rehnuma Mostafa

Subjects
bibliometric analysis, blockchain, challenges, developing country, implementation, prisma, systematic review, vosviewer, Technology (General), T1-995, Management. Industrial management, HD28-70
Abstract

Contemporary research on technology and innovation management has gauged blockchain as a catalyst for the electronic-information era. As developing countries around the globe are facing challenges to adopt and implement blockchain, this evidence-based systematic review aims to identify the implementation challenges of blockchain technology for developing countries. A total of 1,298 published documents during the period 2016-2021 from the Scopus, Web of Science, IEEE Xplore, and ScienceDirect databases were explored to recognize 19 appropriate publications for research analysis using a PRISMA flow diagram. Based on the identified challenges from the thorough reviews of these 19 publications, using the association technique, the authors developed four comprehensive themes as broad challenges: technological, governance, organizational and environmental, and knowledge. Later, they performed bibliometric analyses using VOSviewer 1.6.17, and based on the bibliometric evidence constructed term co-occurrence network plots. The results show that developing countries face challenges vis-à-vis technological, governance, organizational and environmental, and knowledge issues when implementing blockchain technology. Hence, to make blockchain adoption and implementation processes successful in developing countries, these broad categories of challenges must be properly addressed. In addition, practitioners of disruptive technology, policymakers, consultants, IT experts, business people, top company managers, and above all, respective governments need to pay attention to these challenges for accelerating the blockchain adoption and implementation process in developing countries.

Published
2022
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7. Impact of Green Supply Chain Management (GSCM) on Business Performance and Environmental Sustainability: Case of a Developing Country

Author

Abu Naser Mohammad Saif and Rasheda Akter Rupa

Subjects
Sustainable development, Supply chain management, Profit (accounting), Strategy and Management, 05 social sciences, Developing country, 010501 environmental sciences, 01 natural sciences, 0502 economics and business, Sustainability, Business, Business and International Management, Industrial Revolution, 050203 business & management, Industrial organization, 0105 earth and related environmental sciences
Abstract

In this Fourth Industrial Revolution (4IR), sustainable development for business firms depends on maintaining sustained performance and environmental sustainability to a great extent. The current study discovers the impact of green supply chain management (GSCM) practices on business performance and the environmental sustainability of a developing country, Bangladesh. Cost and profit are the two important indicators of business performance. On the other hand, environmental sustainability is expressed by waste disposal, resource consumption, and greenhouse gas emission. Primary data were collected through the distribution of web links and direct interaction with the participants of different firms practicing GSCM practices in Bangladesh. A structured questionnaire was used for data collection. Hypotheses were formulated and evaluated accordingly. This study found that the impact of implementation of GSCM practices differs with respect to cost, profit, waste disposal, resource consumption, and greenhouse gas emission. GSCM practices have a statistically significant impact on cost, waste disposal, resource consumption, and greenhouse gas emission. The impact of GSCM practices on profit was statistically insignificant. It was found that lack of IT implementation, high cost of waste disposal, uncertainty and competition in the market, resistance to change, and lack of top management support are the major barriers to implement GSCM practices in Bangladesh.

Published
2021

8. Blockchain in Online Learning: A Systematic Review and Bibliographic Visualization

Author

Mao Zhao, Wei Liu, Abu Naser Mohammad Saif, Bo Wang, Rasheda Akter Rupa, K. M. Anwarul Islam, S.M. Masudur Rahman, Nusrat Hafiz, Rehnuma Mostafa, and Mohammad Anisur Rahman

Subjects
Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction, Management, Monitoring, Policy and Law
Abstract

In the contemporary era of global and sustainable information management, blockchain has made a cutting-edge transformation in online learning. To apprehend this new trajectory, this current systematic review with bibliographic visualization aims to identify the thematic clusters of underlying aspects concerning the sustainable nexus of blockchain and online learning. Using the updated guidelines of the PRISMA flowchart, a total of 434 scholarly research papers from the mainstream research databases, i.e., Web of Science, Scopus, IEEE Xplore, and ScienceDirect, were inspected to be categorized into 15 relevant publications. Bibliographic data were assembled and analyzed accordingly to construct network visualization maps, such as co-authorship, citation, co-citation, bibliographic coupling, and term co-occurrence using VOSviewer 1.6.18. Significant terms were reported and later cross-mapped with those identified by critically reviewing the applicable 15 papers. Standardized scholarship, behavior pattern, and digital badging have been found and derived as themes from the connected clusters. Therefore, current research findings reveal these three broad clutches of themes concerning the sustainable nexus of blockchain and online learning.

Published
2023

12. Generation of electrical energy using road transport pressure at speed breaker.

Author

Hossain, MD. Iqbal, Akter, Rupa, Hasan, Mahedi, Raihan, Ahamed, Khan, M. F. Shahriar, Ali, Fahad Bin, Chakma, Rocky, Alam, M. J., Mahtab, S. S., and Baraneetharan, E.

Subjects
*ELECTRICAL energy, *ENERGY consumption, *ELECTRIC generators, *OCEAN waves, *ROTATIONAL motion
Abstract

This electric generator is a simple operated electro mechanical system which is controlled by gear and electricity is produced by the generator. This electric generator has been designed by using Sprocket and Chain, Gear, Flywheel, Bearing, spring, Generator, and Battery. Our target was to design and Construct a system that will produce Electricity using road transport pressure. When pressure is created on the pressure lever, the wheels of designated system rotate thoroughly and this rotation of wheels produce electricity in dc generator. The generated electricity may be used to meet the local demand. This may solve partially the national power generation problem. [ABSTRACT FROM AUTHOR]

Published
2020
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13. Solar cells: Varieties and utilization-A short review.

Author

Akter, Rupa, Mahin, Md. Mohaiminul Islam, Mahbub, Tauhidul, Nahreen, Kashphya, Raihan, Ahamed, Chakma, Rocky, Alam, M. J., Mahtab, S. S., and Baraneetharan, E.

Subjects
*SOLAR cells, *CLEAN energy, *ELECTRICAL energy, *ENERGY consumption, *SOLAR energy, *PHOTOVOLTAIC effect, *PHOTOVOLTAIC cells, *SILICON solar cells
Abstract

Now-a-days, power from Sun (solar light) is generated universally. At present, there is a claim of clean energy and we can get a great amountof power from sun. Energy from sun is boundless andhuge amount of energy (heat and light) falls on ground per day andif we can use that energy properly then there is a hope of satisfactoriness in energy. To get energy from sun, we use various kinds of solar cells. Solar cell converts light into electricity directly by using photovoltaic effect and there are many varieties of them. Solar cell is also well-known as photovoltaic cell (PV cell) and is used to switch sun's energy into electrical energy. Getting power from sun is considered as the solution of sustainable energy.But for that, we need to know how and where we can use solar energy and where it will be supplementary proficient to apply. In this paper, we have discussed about the types of solar cells and good things about solar concentrated tower. Mainly remarkable, to produce electricity, a block diagram has been discussed with some important applications to make this energy efficient in this paper. In the direction of gettinghuge power, only solar panel is not satisfying as solar power tower with mirror (solar energy concentrated tower) gives a large amount of power. So, in our block diagram, we are using both solar panel and solar concentrated tower as both solar panel and tower will be more efficient if connected together. [ABSTRACT FROM AUTHOR]

Published
2020
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14. Design and implementation of a time-based Sun tracking solar system.

Author

Ali, Fahad Bin, Chakma, Rock, Raihan, Ahamed, Hasan, Mahedi, Khan, M. F. Shahriar, Alam, M. J., Akter, Rupa, Mahtab, S. S., and Baraneetharan, E.

Subjects
RENEWABLE energy sources, SOLAR system, SOLAR cells, GEOTHERMAL resources, ENERGY conversion, SOLAR energy
Abstract

Because of continuous decrease fuel of fossil reserve in earth, the whole world is now turning to renewable energy sources like solar, wind, geothermal, hydropower etc. In addition, it can be said that the ultimate source of energy on earth is sun with a few exceptions. And it is also the cleanest energy source without any pollution. The power value of 1.74 x 1017 watts receives by earth and the world consumes about 1.2 x 1013 watts of power per day. We are attempting to devour more energy from the sun utilizing the panel of solar. Changing of solar energy from electrical energy is expanding where the panels position of solar is situated vertically from the sun. In this way, the sun's tracking location and the panels position of solar is significant. In this paper, a new design of automatic tracking system to track the position of sun's has been focused. Though it is positioned vertically from the sun for the maximum conversion of energy in every times as move as solar panel with this system. In this tracking system, Light Depending Resistors (LDR) are applied as sensors. This system includes a microcontroller, LDR, gear motor system, and solar panels. This system is designed as dual axis tracking system. We also added a Real Time Clock and limit switch to reset the position of the solar panels at the end of the day. [ABSTRACT FROM AUTHOR]

Published
2020
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16. Coronavirus pandemic world wide

Author

Sayed, Abu, primary, Fariha, Rahisa, additional, akther, Shume, additional, polock, Rebeka Sultana, additional, Sikder, Abdur Rahman, additional, and Akter, Rupa, additional

Published
2019
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17. Blood Donation Systems in Bangladesh: Problems and Remedy

Author

Rasheda Akter Rupa, Md. Rakibul Hoque, Hasina Mushrofa, Sahariar Hasan Jiisun, and Monzur Hussain Chowdhury

Subjects
Coping (psychology), Seekers, Blood donor, business.industry, Anemia, Thalassemia, Medicine, Health related, Developing country, Medical emergency, Rural area, business, medicine.disease
Abstract

Every year patients of various diseases need blood. Among them some need regular transfusion of blood. Hence, safe blood save life but unsafe one takes life. Ensuring regular flow of safe blood is a great challenge for the community in developing countries. Various public and private organizations are working for this purpose. Although the number of blood donor is increasing, there is still a huge gap in demand and supply of blood. A study has conducted to find out problems in getting blood donor in Bangladesh. Data have been collected from 430 respondents in different urban and rural areas of Bangladesh. Moreover, in depth interviews have conducted with hospital authority, blood donating organizations, public and private organizations and volunteers who work for various blood donating organizations. This study finds that patients need blood for delivery case (76%), surgery (55%), kidney diseases (33%), thalassemia (37%) and anemia (41%). About 48% blood seekers report that they require about 19-24 hours for managing each bag of blood. The seekers also report that they collect blood from relatives (77%), blood donating organizations (33%) and blood bank (26%). About 26% donors report that they have to pass more than 6 km for blood donation. They also spend money more than 100 taka (12%) for this purpose. Before and during blood donation, donors face several problems such as transportation problem (38%), coping with emergency case (32%), unskilled staff (29%), health related problem (15%) and lengthy cross checking process (35%). There are a number of people want to donate blood willingly. However, they can’t donate due to lack of available communication with blood seekers. Maintaining database of donors, training staffs and using technologies and machines for blood donation process can solve problems in blood donation.

Published
2019

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