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698 results on '"So Young Joo"'

12. Hepatocellular carcinoma risk in patients with chronic hepatitis B receiving tenofovir- vs. entecavir-based regimens: Individual patient data meta-analysis

Author

Choi, Won-Mook, Yip, Terry Cheuk-Fung, Wong, Grace Lai-Hung, Kim, W. Ray, Yee, Leland J., Brooks-Rooney, Craig, Curteis, Tristan, Cant, Harriet, Chen, Chien-Hung, Chen, Chi-Yi, Huang, Yi-Hsiang, Jin, Young-Joo, Jun, Dae Won, Kim, Jin-Wook, Park, Neung Hwa, Peng, Cheng-Yuan, Shin, Hyun Phil, Shin, Jung Woo, Yang, Yao-Hsu, and Lim, Young-Suk

Published
2023
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39. Lunar Orbit acquisition of the Korea Pathfinder lunar orbiter: Design reference vs actual flight results.

Author

Song, Young-Joo, Bang, Jun, Bae, Jonghee, and Hong, SeungBum

Subjects
*LUNAR orbit, *ORBIT determination, *ORBITS (Astronomy), *ASTRONAUTICS, *SPACE exploration
Abstract

The Korea Pathfinder Lunar Orbiter (KPLO), officially named as Danuri, is the Republic of Korea's first spacecraft to orbit the Moon. The goal of KPLO is to secure core deep space technology for future space exploration in Korea and contribute to lunar science by gathering data from the lunar orbit for one year. This paper presents the results of KPLO's Lunar Orbit Acquisition (LOA) phase in detail, with a particular focus on the operational results of Flight Dynamics (FD). During the LOA phase, the KPLO FD team experienced many expected and unexpected issues. These issues were mitigated by making real-time updates to the LOA phase Design Reference Mission (DRM). The paper also presents the results of the Orbit Determination (OD) and performance of each Lunar Orbit Insertion (LOI) maneuver conducted during the actual flight operation. The importance of considering operational constraints when designing the DRM is emphasized by presenting lessons learned based on actual flight experiences. Unlike the original KPLO LOA phase DRM, KPLO successfully achieved the final mission orbit using only three LOI burns, instead of the planned five LOI burns and an Orbit Trim Maneuver (OTM). Despite the extensive revisions made to the DRM, all mission requirements were still fulfilled during the final lunar orbit insertion, taking into account the significant operational constraints. • Real flight operation results of the Korea Pathfinder Lunar Orbiter's lunar orbit acquisition phase are presented. • Orbit determination and lunar orbit insertion maneuver performance are analyzed based on actual flight data. • Unexpected issues during the actual flight operation were mitigated through real-time updates on the design reference mission. • Considering real-world operational constraints while designing the design reference mission is very critical. [ABSTRACT FROM AUTHOR]

Published
2023
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40. Examining the heterogeneity by employment status in dynamics between BMI and cognition: a longitudinal cohort study of the Korean aging population.

Author

Kim, Young-Joo and Yeom, Hyun-E

Subjects
*OLDER people, *BODY mass index, *POPULATION aging, *COHORT analysis, *COGNITIVE ability, *LONGITUDINAL method
Abstract

This study investigated the potential heterogeneity by employment status in the relationship between body mass index (BMI) trajectory and cognitive function among an aging population. We analyzed 2010–2018 cohort data from the Korean Longitudinal Study of Aging involving 4889 individuals aged over 45. We used statistical techniques of quadratic terms, interaction terms, time-invariant unobserved fixed effects, and time-lag effects to estimate the dynamic and interactive relationships among study variables. The effect of BMI on cognitive function was heterogeneous based on employment status. For the nonemployed group, the impact of BMI on cognitive function showed an inverted U-shape with a turning point (BMI 25); a higher BMI (up to 25) was associated with higher cognitive function, but further increases beyond this threshold led to decreased cognitive function. For the employed group, however, the impact of BMI on cognitive function was nonsignificant. The nonlinear effect of BMI on cognitive function for the nonemployed group was robust across various subgroups and specifications. The findings highlight the risk of obesity (BMI ≥ 25) on cognitive decline, particularly among nonemployed individuals. This illuminates the critical role of labor activity in regulating the impact of BMI on cognitive function among an aging population. [ABSTRACT FROM AUTHOR]

Published
2023
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41. Lazertinib Versus Gefitinib Tyrosine Kinase Inhibitors in Treatment-Naíve Patients With EGFR-Mutated Advanced NSCLC: Analysis of the Asian Subpopulation in LASER301.

Author

Reungwetwattana, Thanyanan, Cho, Byoung Chul, Lee, Ki Hyeong, Pang, Yong Kek, Fong, Chin Heng, Kang, Jin Hyoung, Lee, Yun-Gyoo, Lim, Chun Sen, Danchaivijitr, Pongwut, Lim, Yueh Ni, Lee, Youngjoo, How, Soon Hin, Geater, Sarayut, Lee, Sung Sook, Min, Young Joo, Kim, Joo-Hang, Lee, Jong-Seok, Lee, Gyeong-Won, Soo, Ross A., and Lee, Sae Young

Published
2023
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