Zobrazeno 1 - 10
of 38
pro vyhledávání: '"JaeHwan Park"'
Publikováno v:
Nuclear Engineering and Technology, Vol 55, Iss 2, Pp 546-554 (2023)
The cyclical behavior of Alloy 617 was examined at 25 °C and high temperatures of 800, 850, 900, and 950 °C in air to obtain its fatigue life curves. The specimens tested at 25, 800, and 850 °C cyclically hardened, whereas those tested above 900
Externí odkaz:
https://doaj.org/article/9b997e4711d14002bccd5111d1db1809
Autor:
Jaehwan Park, Changhee Hahn
Publikováno v:
IEEE Access, Vol 11, Pp 89409-89422 (2023)
Machine learning is widely used for autonomous driving because it can recognize surrounding circumstances feasibly from sensor and determine appropriate actions. Most of these sensors are based on micro-electro-mechanical systems (MEMS), which enable
Externí odkaz:
https://doaj.org/article/e402433c413e414ca37cd17a28c00dc0
Publikováno v:
IEEE Access, Vol 10, Pp 112134-112149 (2022)
Under-constrained cable-driven parallel robots (UCCDPRs) manipulate the end-effector (EE) by employing fewer number of cables than the degree of freedom of the EE, which causes unwanted swaying motions and oscillations. These unwanted vibrations can
Externí odkaz:
https://doaj.org/article/547e5cdabd494e989835b58030d88d5c
Publikováno v:
IEEE Access, Vol 9, Pp 43775-43784 (2021)
Powered lower limb orthoses have been commercially available for patients with Spinal Cord Injuries (SCI) or stroke. However, studies have shown that there are adverse effects on kinematics as well as metabolic energy of the users due to the addition
Externí odkaz:
https://doaj.org/article/a3703b3d08bf40d8aa3af3cc6983595d
Publikováno v:
Risks, Vol 9, Iss 5, p 93 (2021)
Forecasting of LME (London Metal Exchange) nickel prices remains an interesting topic but lacks consensus. This study aims to fill knowledge gaps by demonstrating the announcement effect of export bans by the Indonesian government. This article focus
Externí odkaz:
https://doaj.org/article/a2fe31eb4d6b48b3876949840c1b6a29
Publikováno v:
International Journal of Financial Studies, Vol 8, Iss 3, p 55 (2020)
This study explored the option value embedded in a reverse mortgage in Korea through an empirical analysis, using the Black–Scholes option-pricing model. The value of a reverse mortgage is affected by the variation in house prices. However, older h
Externí odkaz:
https://doaj.org/article/efaab0acc99d4d179aea347850322f22
Publikováno v:
Economies, Vol 8, Iss 2, p 36 (2020)
The motivation of this paper is to identify the effect of treatment charge (TC) on LME (London Metal Exchange) copper prices. It is a fundamental variable as a supply side factor, because it is related to the smelting process and reflects the level o
Externí odkaz:
https://doaj.org/article/0df033560f354204a77c4f54e7c18908
Autor:
Jaehwan Park
Publikováno v:
International Journal of Financial Studies, Vol 7, Iss 2, p 32 (2019)
This paper employs Granger causality tests to analyze the role of speculators using weekly COTR (commitment of traders reports) data covering the period of August 2014 to July 2017. The paper presents statistically significant evidence that the posit
Externí odkaz:
https://doaj.org/article/9c0d9a993d574420a95fe1c11c3574f4
Autor:
Jaehwan Park
Publikováno v:
International Journal of Financial Studies, Vol 7, Iss 1, p 10 (2019)
This article visits the question of whether canceled warrants (CWs) have a positive effect on LME metal prices. To examine this question carefully, a regression model is applied. This paper finds a statistically significant positive link between CWs
Externí odkaz:
https://doaj.org/article/91894ce4721c45cb96128a5c709b4d6a
Autor:
Jaehwan Park, Byungkwon Lim
Publikováno v:
International Journal of Financial Studies, Vol 6, Iss 1, p 32 (2018)
This paper explores the market efficiency of the six base metals traded on the LME (London Metal Exchange) using daily data from January 2000 to June 2016. The hypothesis that futures prices 3M (3-month) are unbiased predictors of spot prices (cash)
Externí odkaz:
https://doaj.org/article/1fc96258aa014d47b4059e35ad08f4b0