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KIST-NOMAD - a Repository to Manage Large Amounts of Computational Materials Science Data
Samuel Boateng,이광열,Deepika,조한얼,이규환,김찬수 대한금속·재료학회 2020 대한금속·재료학회지 Vol.58 No.10
We introduce the Korea Institute of Science and Technology-Novel Materials Discovery (KISTNOMAD) platform, a materials data repository. We describe its functionality and novel features from an academic viewpoint. It is a data repository designed for computational material science, especially focusing on managing and sharing the results of molecular dynamics simulation results as well as quantum mechanical computations. It consists of three main components: a database, file storage, and web-based front end. The database hosts material properties, which are extracted from the computational results. The front end has a graphical user interface and an open application programming interface, which allow researchers to interact with the system more easily. KIST-NOMAD’s panel displays the searched results on a well-organized and research-oriented web page. All the open access data and files are available for downloading in comma-separated value format as well as zipped archives. This automated extraction function was developed by utilizing database parsers and JSON scripts. KISTNOMAD also has an efficient option to download simulation and computation results on a large-scale. All of the above functions are designed to satisfy academic and research demands, and make highthroughput screening available, while incorporating machine learning for computational material engineering. We finally stress that the repository platform is user-driven and user-friendly. It is clearly designed to follow the modern big-data architecture and re-use principles for scientific data, such as being findable, accessible, and interoperable.
Signal Combining for Reliable WiFi Backscatter Communication
Richard Boateng Nti(리차드),Ji-Hoon Yun(윤지훈) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.10
The application of frequency shift in WiFi backscatter communication is efficient in minimizing the effect of the intrinsic fluctuation of WiFi signals, especially in bistate backscatter system. Nonetheless, because the backscattered signal is weak, additional signals from dominant transmitters may emerge in the shifted frequency channels, interfering with the backscattered signal substantially. To address this issue in a seamless manner to incumbent transmitters, we propose code repetition wherein the information bit is repeated a number of times equivalent to the code length from the transmitter side. Decoding at the receiver end is implemented on the basis of majority voting in the shifted channels, to reduce bit errors caused by residual interference. The focus is to investigate the impact of code repetition for WiFi backscatter communication regarding transmission reliability. We show that the proposed method improves performance as code length increases using system prototyping and testbed experiments.
The Basis of the Grant of Interim Injunctions in Ghanaian Law ― Outline of a Theory ―
EUGENE KWADWO BOATENG MENSAH 전남대학교 법학연구소 2013 법학논총 Vol.33 No.3
This paper, examines how Ghanaian courts have dealt with applications for interim injunctions. I identify the archetypical situation in which courts make determinations about interim injunctions and show that the archetypical situation raises the control rights problem. The control rights problem leads to three further questions - the strength of A’s claim question, the damages question and the irreparable harm question. An adequate theory justifying the basis of the grant of interim injunctions must provide satisfactory answers to these issues. When courts make determinations about interim injunctions they exercise discretionary powers. I identify and evaluate various theories upon which the basis of interim injunctions can be founded. Although I reject Scanlon’s consequentialist theory, I develop some of his insights to form the basis of the modified prima facie test, which I argue should form the basis for determining interim injunctions. I argue that the modified prima facie test is acceptable because it protects rights and the interests of vulnerable applicants. I then examine Leubsdorf’s theory on interim injunctions. I also analyze Lord Diplock’s decision in American Cyanamid v. Ethicon and Amissah JA decision in Vanderpuye v. Nartey - the case upon which interim injunctions are granted in Ghana. I reject all of these approaches because they do not sufficiently protect rights and consequently do not provide adequate answers to the control rights problem and the other questions identified above.