Economic valuation of green hydrogen charging compared to gray hydrogen charging: The case of South Korea

C Park, M Koo, JR Woo, BI Hong, J Shin - International Journal of …, 2022 - Elsevier
The South Korean government promotes hydrogen-powered vehicles to reduce greenhouse
gas (GHG) emissions but these vehicles use gray hydrogen while charging, which causes …

An approximation by neural networkswith a fixed weight

N Hahm, BI Hong - Computers & Mathematics with Applications, 2004 - Elsevier
Neural networks are widely used in many applications including astronomical physics,image
processing, recognition, robotics, and automated target tracking, etc. Their ability to …

Approximation order to a function in C (R) by superposition of a sigmoidal function

BI Hong, N Hahm - Applied mathematics letters, 2002 - Elsevier
We investigate the approximation error to a continuous function defined on the whole real
line by superposition of a sigmoidal function. With the minimal constraints on a continuous …

Performance characteristics of long-period fiber-gratings made from periodic tapers induced by electric-arc discharge

MW Kim, DW Lee, BI Hong, HY Chung - Journal of the Korean Physical …, 2002 - osti.gov
The authors report the characterization of periodically tapered long-period fiber gratings (LPFG's)
induced by using an electric-arc discharge. A distinctly strong LP{sub 01}{sup core} to …

High-order regularity and approximation for Hamilton-Jacobi equations

BI Hong - 1990 - search.proquest.com
We prove new regularity results for solutions of first-order partial differential equations of
Hamilton-Jacobi type posed as initial value problems on the real line. We show that certain …

[PDF][PDF] A Note on neural network approximation with a sigmoidal function

BI Hong, N Hahm - Applied Mathematical Sciences, 2016 - m-hikari.com
Bum Il Hong … Copyright c 2016 Bum Il Hong and Nahmwoo Hahm. This article is
distributed under the Creative Commons Attribution License, which permits unrestricted use …

Analysing the failure factors of eco‐friendly home appliances based on a user‐centered approach

J Shin, S Kang, D Lee, BI Hong - Business Strategy and the …, 2018 - Wiley Online Library
Pro‐environmental consumption is necessary for sustainable development, but the sales of
eco‐friendly products have been limited. In this regard, the present study analyses the failure …

How consumers value improving energy efficiency policy in the electricity market: A contingent valuation experiment in South Korea

S Nam, J Shin, BI Hong - Energy & Environment, 2024 - journals.sagepub.com
Global warming concerns have emphasized the need for carbon neutrality. Improving the
efficiency of the electricity industry is one method of reducing CO 2 emissions. There is a …

[HTML][HTML] Complete position synchronization in the power grid system

SH Choi, I Ryoo, BI Hong - Applied Mathematics Letters, 2018 - Elsevier
We present a sufficient condition for synchronization of power grid model when the moment
of inertia is zero. Unlike the Kuramoto model, the power grid model contains nonlinear terms …

Extension of localised approximation by neural networks

N Hahm, BI Hong - Bulletin of the Australian Mathematical Society, 1999 - cambridge.org
We prove generalised results for localised approximation by generalised translation
networks. We also show the relationship between the minimum number of neurons in the …