Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Yong Kwan Lee"'
Publikováno v:
Discover Artificial Intelligence, Vol 4, Iss 1, Pp 1-15 (2024)
Abstract This study examines factors influencing leisure life satisfaction (LLS) through machine learning techniques based on the data from the 2019 National Leisure Activity Survey in Korea. The results show that using machine learning techniques in
Externí odkaz:
https://doaj.org/article/66cdfad18af14edeaa2f629eec83537c
Autor:
Yong-Kwan Lee, Jae-Jin Sim, Jong-Soo Byeon, Yong-Tak Lee, Yeong-Woo Cho, Hyun-Chul Kim, Sung-Gue Heo, Kee-Ahn Lee, Seok-Jun Seo, Kyoung-Tae Park
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 66, Iss No 4, Pp 935-939 (2021)
In this study, high-purity tantalum metal powder was manufactured via self-propagating high-temperature synthesis. During the process, Ta2O5 and Mg were used as the raw material powder and the reducing agent, respectively, and given that combustion r
Externí odkaz:
https://doaj.org/article/754c53b204334d0d83bd3578f686f276
Autor:
Yeong-Woo Cho, Jae-Jin Sim, Sung-Gue Heo, Hyun-Chul Kim, Yong-Kwan Lee, Jong-Soo Byeon, Yong-Tak Lee, Kee-Ahn Lee, Seok-Jun Seo, Kyoung-Tae Park
Publikováno v:
Archives of Metallurgy and Materials, Vol vol. 66, Iss No 3, Pp 683-687 (2021)
In this study, the effect of the addition of ZrO2 and Al2O3 ceramic powders to Cu-Mo-Cr alloy was studied by examining the physical properties of the composite material. The ceramic additives were selected based on the thermodynamic stability calcula
Externí odkaz:
https://doaj.org/article/bb741cae2aca48dcab0986acd641c905
Autor:
Yong-Kwan Lee
Publikováno v:
World Leisure Journal. 65:79-100
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed8897970e8519ce475c4f857892def1
https://doi.org/10.1080/16078055.2022.2136746
https://doi.org/10.1080/16078055.2022.2136746
Autor:
Yong-Kwan Lee
Publikováno v:
Socail Science Review. 53:225-242
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::412969c9fb68e078cff412e6fbac36c6
https://doi.org/10.31502/ssri.53.1.9
https://doi.org/10.31502/ssri.53.1.9
Autor:
Yong-Kwan Lee
Publikováno v:
Korea Association Of Cultural Economics. 25:27-44
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9757195e9e3db15cf31357cc96b776ab
https://doi.org/10.36234/kace.2022.25.1.27
https://doi.org/10.36234/kace.2022.25.1.27
Autor:
Yong-Kwan Lee
Publikováno v:
Youth & Society. 54:982-999
This study examined allocation of adolescents’ free time differs depending on financial and spatial availability by exploiting the exogenous change on the school day. Using Korea Time Use Survey data, I found that adolescents allocate free time cre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6539a91c4adf8b249f4986e3be39e934
https://doi.org/10.1177/0044118x211012257
https://doi.org/10.1177/0044118x211012257
Autor:
Jungmin Lee, Yong-Kwan Lee
Publikováno v:
Education Economics. 29:143-157
Shortening the school week is a controversial policy with little empirical investigation. We examine how shortening the school week can affect the time allocation of children and their parents. In ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a560bfd1f5dbde2e836b440f99b1b010
https://doi.org/10.1080/09645292.2020.1867961
https://doi.org/10.1080/09645292.2020.1867961
Autor:
Seok-Jun Seo, Sang-Hoon Choi, Taek-Soo Kim, Jae-Jin Sim, Yong-Kwan Lee, Sung Gue Heo, Kyoung-Tae Park
Publikováno v:
Metals and Materials International.
Tantalum (Ta) is a heavy refractory metal with an atomic weight of 180.95 g/mol, a density of 16.6 g/cm3, and a high melting point of 3017 °C. With its refractory characteristics, it shows excellent chemical and physical stability as well as corrosi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4de46e6f3ed7cd076890784ad731fe7
https://doi.org/10.1007/s12540-020-00948-7
https://doi.org/10.1007/s12540-020-00948-7
Autor:
Yong-Kwan Lee, Jungmin Lee
Publikováno v:
Labour Economics. 40:25-36
Long working hours are considered as one of the major risk factors for workplace accidents and workers' health. In this paper, we estimate the causal effect of working hours on industrial injury rates. We exploit a quasi-natural experiment in South K
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49fbbfeca0595d8602bdeb3f1766c57a
https://doi.org/10.1016/j.labeco.2016.02.004
https://doi.org/10.1016/j.labeco.2016.02.004