Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Hyun-Jong Yoo"'
Publikováno v:
Journal of Materials Research and Technology, Vol 16, Iss , Pp 373-385 (2022)
In this study, a high-power Nd:YAG laser is used to remove a corrosion layer on the surface of 304L stainless steel (SS304L). A laser power of 1140 W with different hatch distances and the number of repetitions is employed for corrosion removal. As s
Externí odkaz:
https://doaj.org/article/f7d153497ddd40cda17d4b80853a91c3
Autor:
Won-Sang Shin, Hyun Jong Yoo, Jeoung Han Kim, Jiyeon Choi, Eun-Joon Chun, Changkyoo Park, Yoon-Jun Kim
Publikováno v:
Metals, Vol 10, Iss 11, p 1487 (2020)
Laser heat-treatment and laser nitriding were conducted on an AISI P21 mold steel using a high-power diode laser with laser energy densities of 90 and 1125 J/mm2, respectively. No change in surface hardness was observed after laser heat-treatment. In
Externí odkaz:
https://doaj.org/article/0be01e560dfe43f98c70efeb3ae7c509
Publikováno v:
Optics & Laser Technology. 163:109434
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::732632843c1fb50ca8ca367612c50240
https://doi.org/10.1016/j.optlastec.2023.109434
https://doi.org/10.1016/j.optlastec.2023.109434
Autor:
유현종 ( Hyun-jong Yoo )
Publikováno v:
Korean Journal of Public Administration. 58:55-91
과거의 발전국가는 경제발전의 목표를 달성하였지만 자유의 억압과 권한 남용, 행정 내부 과정이 권위주의적인 통제와 조정에 의하여 움직인다는 점에서 민주적 가치와 상충되는 측면이
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b15519f89c41d85c5ba9b9e676c21c9
https://doi.org/10.24145/kjpa.58.3.3
https://doi.org/10.24145/kjpa.58.3.3
Autor:
Hyun-Jong Yoo
Publikováno v:
Korean Public Administration Review. 52:331-354
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08eff60da7a015e7d610fb2d4187fbb6
https://doi.org/10.18333/kpar.52.4.331
https://doi.org/10.18333/kpar.52.4.331
Autor:
Eun Joon Chun, Changkyoo Park, Hyun Jong Yoo, Jeoung Han Kim, Jiyeon Choi, Won Sang Shin, Yoon Jun Kim
Publikováno v:
Metals
Volume 10
Issue 11
Metals, Vol 10, Iss 1487, p 1487 (2020)
Volume 10
Issue 11
Metals, Vol 10, Iss 1487, p 1487 (2020)
Laser heat-treatment and laser nitriding were conducted on an AISI P21 mold steel using a high-power diode laser with laser energy densities of 90 and 1125 J/mm2, respectively. No change in surface hardness was observed after laser heat-treatment. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::341a7d7b19370bc76582b7e4cbad785f
Autor:
Hyun-Jong Yoo, Moo-Kwon Chung
Publikováno v:
Institute for Poverty Alleviation and International Development. 27:33-82
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61b0d57d5a31f4f113f8514f9cbb25c3
https://doi.org/10.18350/ipaid.2018.27.2.33
https://doi.org/10.18350/ipaid.2018.27.2.33
Autor:
Hyun-Jong Yoo
Publikováno v:
Korean Public Administration Review. 49:419-450
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec80c6a7db1bc6ea673aa0bffb3c9cc7
https://doi.org/10.18333/kpar.49.4.419
https://doi.org/10.18333/kpar.49.4.419
Publikováno v:
The Korean Journal of Policy Studies. 27:73-99
This article analyzes the institutionalization of the presidential secretariat(PS) in Korea from 1948 to the present. The PS was poorly institutionalizedfrom the 1940s to the 1960s, but it has rapidly expanded and differentiated since1968. Although p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb392e4bb93486fa892b32e61a308cb0
https://doi.org/10.52372/kjps27304
https://doi.org/10.52372/kjps27304
Publikováno v:
The Journal of Korea Information and Communications Society. :1022-1032
In OFDMA-based wireless mesh networks, synchronization of carrier frequencies among adjacent nodes is known to be difficult. In this paper, a distributed synchronization technique is proposed to solve the synchronization problem in OFDMA-based wirele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17fa65417cba8d660d7e1cfc93563311
https://doi.org/10.7840/kics.2012.37b.11.1022
https://doi.org/10.7840/kics.2012.37b.11.1022