Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Woojin Chang"'
Autor:
Junhyung Jeong, Kyujun Cho, Honggu Ji, Woojin Chang, Jongmin Lee, Byoung‐gue Min, Dongmin Kang
Publikováno v:
Electronics Letters, Vol 60, Iss 10, Pp n/a-n/a (2024)
Abstract This paper proposes an X‐band quasi Class‐F high power amplifier (HPA) monolithic microwave integrated circuit (MMIC) using DynaFET gallium nitride (GaN) high electron mobility transistor (HEMT) modelling. To enhance efficiency, a novel
Externí odkaz:
https://doaj.org/article/2fb37fe8a39e4199a24bf2067d615ca6
Publikováno v:
IEEE Access, Vol 11, Pp 88152-88160 (2023)
Pneumonia is an inflammation of the lungs caused by pathogens or autoimmune diseases, with about 450 million patients worldwide each year. Chest X–ray analysis is the most common radiographic method used to diagnose pneumonia, and advances in deep
Externí odkaz:
https://doaj.org/article/81910b84f8864472a630ab42df3c5868
Publikováno v:
ETRI Journal, Vol 42, Iss 5, Pp 784-792 (2020)
AbstractIn this study, an E‐band low‐noise amplifier (LNA) monolithic microwave integrated circuit (MMIC) has been designed using silicon‐germanium 130‐nm bipolar complementary metal‐oxide‐semiconductor technology to suppress unwanted sig
Externí odkaz:
https://doaj.org/article/b954632aaa8e46c89c0cdab35c42a8d7
Publikováno v:
IEEE Access, Vol 8, Pp 111660-111682 (2020)
This study aims to predict the direction of US stock prices by integrating time-varying effective transfer entropy (ETE) and various machine learning algorithms. At first, we explore that the ETE based on 3 and 6 months moving windows can be regarded
Externí odkaz:
https://doaj.org/article/d0a3ae3f59b14dd1afb8005cc24987c3
Publikováno v:
IEEE Access, Vol 7, Pp 16925-16939 (2019)
Loan status prediction is an effective tool for investment decisions in peer-to-peer (P2P) lending market. In P2P lending market, most borrowers fulfill the repayment plan; however, some of them fail to pay back their loans. Therefore, an imbalanced
Externí odkaz:
https://doaj.org/article/abce26121d214d05b5976e2f373ba8e3
Publikováno v:
IEEE Access, Vol 7, Pp 115317-115330 (2019)
Our research aims to develop the regime switching Markov chain (RSMC), a discrete time Markov chain whose underlying regime is depending on a hidden Markov model, which express the dynamics of sovereign credit rating migration. Estimated based on a v
Externí odkaz:
https://doaj.org/article/0b3f24eb34b1461796b435e4df6508e2
Autor:
Woo-Seok Jang, Woojin Chang
Publikováno v:
Journal of Technology Management & Innovation, Vol 3, Iss 1 (2008)
We analyzed the impact of financial support system on technological innovation of small and medium manufacturing firms in Korea, with a special interest in technology guarantee system. This was done using a sample of 1,014 Korean manufacturing firms
Externí odkaz:
https://doaj.org/article/939d9e9f73b24317ac6011574d859d58
Publikováno v:
Information Sciences. 623:592-606
Autor:
Jong Yul Park, Byoung-Gue Min, Jong-Min Lee, Woojin Chang, Dong Min Kang, E-San Jang, Junhyung Kim, Jeonggil Kim
We propose criteria for recess etching to fabricate T-gate used in InGaAs HEMTs. By patterning additional rectangular pads on the source and drain metals in the e-beam lithography step, it is possible to measure the drain-to-source resistance (R) and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d58a1cefbb65f8947ac767e4299b0178
https://doi.org/10.22541/au.168149167.72785496/v1
https://doi.org/10.22541/au.168149167.72785496/v1
Publikováno v:
Intelligent Data Analysis. 26:723-750
In this study, we propose a deep learning related framework to analyze S&P500 stocks using bi-dimensional histogram and autoencoder. The bi-dimensional histogram consisting of daily returns of stock price and stock trading volume is plotted for each