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738 results on '"Park, Jeong-Hwan"'

1. Resolving tissue complexity by multimodal spatial omics modeling with MISO

Author

Coleman, Kyle, Schroeder, Amelia, Loth, Melanie, Zhang, Daiwei, Park, Jeong Hwan, Sung, Ji-Youn, Blank, Niklas, Cowan, Alexis J., Qian, Xuyu, Chen, Jianfeng, Jiang, Jiahui, Yan, Hanying, Samarah, Laith Z., Clemenceau, Jean R., Jang, Inyeop, Kim, Minji, Barnfather, Isabel, Rabinowitz, Joshua D., Deng, Yanxiang, Lee, Edward B., Lazar, Alexander, Gao, Jianjun, Furth, Emma E., Hwang, Tae Hyun, Wang, Linghua, Thaiss, Christoph A., Hu, Jian, and Li, Mingyao

Published
2025
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4. Author Correction: Resolving tissue complexity by multimodal spatial omics modeling with MISO

Author

Coleman, Kyle, Schroeder, Amelia, Loth, Melanie, Zhang, Daiwei, Park, Jeong Hwan, Sung, Ji-Youn, Blank, Niklas, Cowan, Alexis J., Qian, Xuyu, Chen, Jianfeng, Jiang, Jiahui, Yan, Hanying, Samarah, Laith Z., Clemenceau, Jean R., Jang, Inyeop, Kim, Minji, Barnfather, Isabel, Rabinowitz, Joshua D., Deng, Yanxiang, Lee, Edward B., Lazar, Alexander, Gao, Jianjun, Furth, Emma E., Hwang, Tae Hyun, Wang, Linghua, Thaiss, Christoph A., Hu, Jian, and Li, Mingyao

Published
2025
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11. PAIP 2020: Microsatellite instability prediction in colorectal cancer

Author

Kim, Kyungmo, Lee, Kyoungbun, Cho, Sungduk, Kang, Dong Un, Park, Seongkeun, Kang, Yunsook, Kim, Hyunjeong, Choe, Gheeyoung, Moon, Kyung Chul, Lee, Kyu Sang, Park, Jeong Hwan, Hong, Choyeon, Nateghi, Ramin, Pourakpour, Fattaneh, Wang, Xiyue, Yang, Sen, Jahromi, Seyed Alireza Fatemi, Khani, Aliasghar, Kim, Hwa-Rang, Choi, Doo-Hyun, Han, Chang Hee, Kwak, Jin Tae, Zhang, Fan, Han, Bing, Ho, David Joon, Kang, Gyeong Hoon, Chun, Se Young, Jeong, Won-Ki, Park, Peom, and Choi, Jinwook

Published
2023
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21. InGaN-based blue and red micro-LEDs: Impact of carrier localization.

Author

Park, Jeong-Hwan, Pristovsek, Markus, Han, Dong-Pyo, Kim, Bumjoon, Lee, Soo Min, Hanser, Drew, Parikh, Pritesh, Cai, Wentao, Shim, Jong-In, Lee, Dong-Seon, Seong, Tae-Yeon, and Amano, Hiroshi

Abstract

Herein, we investigate micro-light-emitting diodes (μLEDs) ranging in size from 160 × 160 to 10 × 10 μm2 and report that the differences in the behavior of InGaN-based blue (∼460 nm) and red (∼600 nm) μLEDs are related to carrier localization. The external quantum efficiency (EQE) of blue μLEDs decreases with size regardless of sidewall conditions, whereas that of red μLEDs is insignificant due to carrier localization. Atomic probe tomography examination of 30%, 15%, and 7.5% indium-concentrated InGaN layers used in red μLEDs shows that higher indium concentrations result in greater indium fluctuations, which promote carrier localization and thus shorten the diffusion length of carriers. Finally, by observing the peak wavelength of electroluminescence and the current density at peak EQE for both blue and red μLEDs, we find that radiative recombination rate in μLEDs is likely to be chip size dependent. [ABSTRACT FROM AUTHOR]

Published
2024
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26. PAIP 2019: Liver cancer segmentation challenge

Author

Kim, Yoo Jung, Jang, Hyungjoon, Lee, Kyoungbun, Park, Seongkeun, Min, Sung-Gyu, Hong, Choyeon, Park, Jeong Hwan, Lee, Kanggeun, Kim, Jisoo, Hong, Wonjae, Jung, Hyun, Liu, Yanling, Rajkumar, Haran, Khened, Mahendra, Krishnamurthi, Ganapathy, Yang, Sen, Wang, Xiyue, Han, Chang Hee, Kwak, Jin Tae, Ma, Jianqiang, Tang, Zhe, Marami, Bahram, Zeineh, Jack, Zhao, Zixu, Heng, Pheng-Ann, Schmitz, Rüdiger, Madesta, Frederic, Rösch, Thomas, Werner, Rene, Tian, Jie, Puybareau, Elodie, Bovio, Matteo, Zhang, Xiufeng, Zhu, Yifeng, Chun, Se Young, Jeong, Won-Ki, Park, Peom, and Choi, Jinwook

Published
2021
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27. Resilience of Family Caregivers of People With Dementia in South Korea: A Scoping Review.

Author

Seo, Hyun‐Ju, Park, Song‐I, Choi, Min‐Jung, Choo, Il‐Han, and Park, Jeong‐Hwan

Subjects
PSYCHOLOGICAL resilience, MEDICAL information storage & retrieval systems, SATISFACTION, CONCEPTUAL models, CINAHL database, PSYCHOLOGICAL adaptation, CAREGIVERS, SYSTEMATIC reviews, BURDEN of care, MEDLINE, PSYCHOLOGY, PSYCHOLOGICAL stress, CONCEPTUAL structures, QUALITY assurance, SOCIAL support, DEMENTIA patients, PSYCHOLOGY information storage & retrieval systems
Abstract

Background: Due to rapid increases in the number of Korean people with dementia, dementia has become a priority health issue in South Korea. Likewise, the well‐being of family caregivers of people with dementia has also become an issue of concern. However, little is known about the resilience of Korean family caregivers because there is a lack of review studies from a Korean cultural perspective about the resilience of family caregivers of people with dementia. Objectives: The purpose of this scoping review was to investigate quantitative studies related to resilience theories, measurement instruments, correlates and resilience interventions for family caregivers of people with dementia. Method: This review was conducted according to the Joanna Briggs Institute based on Arksey and O'Malley. Nine databases were searched to retrieve evidence published in English or Korean between January 2000 and September 2022. Studies with a quantitative research design reporting the resilience of family caregivers of people with dementia based on a resilience theory framework were included. Results: A total of 13 studies were included in this review. All studies used either a modified McCubbin and McCubbin's family stress, adjustment and adaptation model or Walsh's family resilience model. All resilience instruments were used without cross‐cultural adaptation. Family adaptation, social support, life satisfaction, family (di)stress and caregiver burden were associated with resilience among family caregivers. A few family resilience‐enhancing programmes showed a positive effect on caregiver resilience. Conclusion: This review noted that all the resilience measures documented in this study need to test for cultural adaptation in a Korean context. Further research is required to develop and implement family‐based, culturally tailored interventions to effectively enhance Korean resilience for family caregivers of people with dementia. Implications for Practice: Gerontological nurses should include Korean family caregivers in their nursing care and assess whether family caregivers have depression or suicidal thoughts to promote better health outcomes for caregivers and their family members. [ABSTRACT FROM AUTHOR]

Published
2024
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39. An artificial intelligence‐powered PD‐L1 combined positive score (CPS) analyser in urothelial carcinoma alleviating interobserver and intersite variability.

Author

Lee, Kyu Sang, Choi, Euno, Cho, Soo Ick, Park, Seonwook, Ryu, Jeongun, Puche, Aaron Valero, Ma, Minuk, Park, Jongchan, Jung, Wonkyung, Ro, Juneyoung, Kim, Sukjun, Park, Gahee, Song, Sanghoon, Ock, Chan‐Young, Choe, Gheeyoung, and Park, Jeong Hwan

Subjects
TRANSITIONAL cell carcinoma, PROGRAMMED death-ligand 1, IMMUNE checkpoint inhibitors, ARTIFICIAL intelligence
Abstract

Aims: Immune checkpoint inhibitors targeting programmed death‐ligand 1 (PD‐L1) have shown promising clinical outcomes in urothelial carcinoma (UC). The combined positive score (CPS) quantifies PD‐L1 22C3 expression in UC, but it can vary between pathologists due to the consideration of both immune and tumour cell positivity. Methods and Results: An artificial intelligence (AI)‐powered PD‐L1 CPS analyser was developed using 1,275,907 cells and 6175.42 mm2 of tissue annotated by pathologists, extracted from 400 PD‐L1 22C3‐stained whole slide images of UC. We validated the AI model on 543 UC PD‐L1 22C3 cases collected from three institutions. There were 446 cases (82.1%) where the CPS results (CPS ≥10 or <10) were in complete agreement between three pathologists, and 486 cases (89.5%) where the AI‐powered CPS results matched the consensus of two or more pathologists. In the pathologist's assessment of the CPS, statistically significant differences were noted depending on the source hospital (P = 0.003). Three pathologists reevaluated discrepancy cases with AI‐powered CPS results. After using the AI as a guide and revising, the complete agreement increased to 93.9%. The AI model contributed to improving the concordance between pathologists across various factors including hospital, specimen type, pathologic T stage, histologic subtypes, and dominant PD‐L1‐positive cell type. In the revised results, the evaluation discordance among slides from different hospitals was mitigated. Conclusion: This study suggests that AI models can help pathologists to reduce discrepancies between pathologists in quantifying immunohistochemistry including PD‐L1 22C3 CPS, especially when evaluating data from different institutions, such as in a telepathology setting. [ABSTRACT FROM AUTHOR]

Published
2024
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40. Recent advances in micro-pixel light emitting diode technology.

Author

Park, Jeong-Hwan, Pristovsek, Markus, Amano, Hiroshi, and Seong, Tae-Yeon

Subjects
*LED displays, *LIGHT emitting diodes, *DISPLAY systems, *STIMULUS & response (Psychology)
Abstract

Display technology has developed rapidly in recent years, with III–V system-based micro-light-emitting diodes (μLEDs) attracting attention as a means to overcome the physical limitations of current display systems related to their lifetime, brightness, contrast ratio, response time, and pixel size. However, for μLED displays to be successfully commercialized, their technical shortcomings need to be addressed. This review comprehensively discusses important issues associated with μLEDs, including the use of the ABC model for interpreting their behavior, size-dependent degradation mechanisms, methods for improving their efficiency, novel epitaxial structures, the development of red μLEDs, advanced transfer techniques for production, and the detection and repair of defects. Finally, industrial efforts to commercialize μLED displays are summarized. This review thus provides important insights into the potential realization of next-generation display systems based on μLEDs. [ABSTRACT FROM AUTHOR]

Published
2024
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