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7,512 results on '"Kang, Ji"'

159. Incidence and disease burden of autoimmune inflammatory rheumatic diseases after non‐pharmaceutical interventions in the COVID‐19 era: A nationwide observational study in Korea

Author

Shin, Je Hee, primary, Pyo, Jung Yoon, additional, Han, Minkyung, additional, Lee, Myeongjee, additional, Lim, Sung Min, additional, Baek, Jee Yeon, additional, Lee, Ji Young, additional, Kang, Ji‐Man, additional, Jung, InKyung, additional, and Ahn, Jong Gyun, additional

Published
2024
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161. Reconfigurable heterogeneous integration using stackable chips with embedded artificial intelligence

Author

Choi, Chanyeol, Kim, Hyunseok, Kang, Ji-Hoon, Song, Min-Kyu, Yeon, Hanwool, Chang, Celesta S., Suh, Jun Min, Shin, Jiho, Lu, Kuangye, Park, Bo-In, Kim, Yeongin, Lee, Han Eol, Lee, Doyoon, Lee, Jaeyong, Jang, Ikbeom, Pang, Subeen, Ryu, Kanghyun, Bae, Sang-Hoon, Nie, Yifan, Kum, Hyun S., Park, Min-Chul, Lee, Suyoun, Kim, Hyung-Jun, Wu, Huaqiang, Lin, Peng, and Kim, Jeehwan

Published
2022
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164. Robust curvelet domain watermarking technique that preserves cleanness of high quality images

Author

Kim, Wook-Hyung, Nam, Seung-Hun, Kang, Ji-Hyeon, and Lee, Heung-Kyu

Subjects
Computer Science - Multimedia, 94A08
Abstract

Watermarking inserts invisible data into content to protect copyright. The embedded information provides proof of authorship and facilitates tracking illegal distribution, etc. Current robust watermarking techniques have been proposed to preserve inserted copyright information from various attacks, such as content modification and watermark removal attack. However, since the watermark is inserted in the form of noise, there is an inevitable effect of reducing content visual quality. In general, more robust watermarking techniques tend to have larger effect on the quality, and content creators and users are often reluctant to insert watermarks. Thus, there is a demand for a watermark that maintains maximum image quality, even if the watermark performance is slightly inferior. Therefore, we propose a watermarking technique that maximizes invisibility while maintaining sufficient robustness and data capacity enough to be applied for real situations. The proposed method minimizes watermarking energy by adopting curvelet domain multi-directional decomposition to maximize invisibility, and maximizes robustness against signal processing attack by watermarking pattern suitable for curvelet transformation. The method is also robust against geometric attack by employing watermark detection method utilizing curvelet characteristics. The proposed method showed very good results of 57.65 dB peak signal-to-noise ratio in fidelity tests, and mean opinion score showed that images treated with the proposed method were hardly distinguishable from the originals. The proposed technique also showed good robustness against signal processing and geometric attacks compared with existing techniques., Comment: 12 pages

Published
2018

165. Magnetic fields towards Ophiuchus-B derived from SCUBA-2 polarization measurements

Author

Soam, Archana, Pattle, Kate, Ward-Thompson, Derek, Lee, Chang Won, Sadavoy, Sarah, Koch, Patrick M., Kim, Gwanjeong, Kwon, Jungmi, Kwon, Woojin, Arzoumanian, Doris, Berry, David, Hoang, Thiem, Tamura, Motohide, Lee, Sang-Sung, Liu, Tie, Kim, Kee-Tae, Johnstone, Doug, Nakamura, Fumitaka, Lyo, A-Ran, Onaka, Takashi, Kim, Jongsoo, Furuya, Ray S., Hasegawa, Tetsuo, Lai, Shih-Ping, Bastien, Pierre, Chung, Eun Jung, Kim, Shinyoung, Parsons, Harriet, Rawlings, Mark, Mairs, Steve, Graves, Sarah F., Robitaille, J. -F., Liu, Hong-Li, Whitworth, Anthony P., Eswaraiah, Chakali, Rao, Ramprasad, Yoo, Hyunju, Houde, Martin, Kang, Ji-hyun, Doi, Yasuo, Choi, Minho, Kang, Miju, Coude, Simon, Li, Hua-bai, Matsumura, Masafumi, Matthews, Brenda C., Pon, Andy, Di Francesco, James, Hayashi, Saeko S., Kawabata, Koji S., Inutsuka, Shu-ichiro, Qiu, Keping, Franzmann, Erica, Friberg, Per, Greaves, Jane S., Kirk, Jason M., Li, Di, Shinnaga, Hiroko, van Loo, Sven, Aso, Yusuke, Byun, Do-Young, Chen, Huei-Ru, Chen, Mike C. -Y., Chen, Wen Ping, Ching, Tao-Chung, Cho, Jungyeon, Chrysostomou, Antonio, Drabek-Maunder, Emily, Eyres, Stewart P. S., Fiege, Jason, Friesen, Rachel K., Fuller, Gary, Gledhill, Tim, Griffin, Matt J., Gu, Qilao, Hatchell, Jennifer, Holland, Wayne, Inoue, Tsuyoshi, Iwasaki, Kazunari, Jeong, Il-Gyo, Kang, Sung-ju, Kemper, Francisca, Kim, Kyoung Hee, Kim, Mi-Ryang, Lacaille, Kevin M., Lee, Jeong-Eun, Li, Dalei, Liu, Junhao, Liu, Sheng-Yuan, Moriarty-Schieven, Gerald H., Nakanishi, Hiroyuki, Ohashi, Nagayoshi, Peretto, Nicolas, Pyo, Tae-Soo, Qian, Lei, Retter, Brendan, Richer, John, Rigby, Andrew, Savini, Giorgio, Scaife, Anna M. M., Tang, Ya-Wen, Tomisaka, Kohji, Wang, Hongchi, Wang, Jia-Wei, Yen, Hsi-Wei, Yuan, Jinghua, Zhang, Chuan-Peng, Zhang, Guoyin, Zhou, Jianjun, Zhu, Lei, Andre, Philippe, Dowell, C. Darren, Falle, Sam, Tsukamoto, Yusuke, Kanamori, Yoshihiro, Kataoka, Akimasa, Kobayashi, Masato I. N., Nagata, Tetsuya, Saito, Hiro, Seta, Masumichi, Hwang, Jihye, Han, Ilseung, Lee, Hyeseung, and Zenko, Tetsuya

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present the results of dust emission polarization measurements of Ophiuchus-B (Oph-B) carried out using the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) camera with its associated polarimeter (POL-2) on the James Clerk Maxwell Telescope (JCMT) in Hawaii. This work is part of the B-fields In Star-forming Region Observations (BISTRO) survey initiated to understand the role of magnetic fields in star formation for nearby star-forming molecular clouds. We present a first look at the geometry and strength of magnetic fields in Oph-B. The field geometry is traced over $\sim$0.2 pc, with clear detection of both of the sub-clumps of Oph-B. The field pattern appears significantly disordered in sub-clump Oph-B1. The field geometry in Oph-B2 is more ordered, with a tendency to be along the major axis of the clump, parallel to the filamentary structure within which it lies. The degree of polarization decreases systematically towards the dense core material in the two sub-clumps. The field lines in the lower density material along the periphery are smoothly joined to the large scale magnetic fields probed by NIR polarization observations. We estimated a magnetic field strength of 630$\pm$410 $\mu$G in the Oph-B2 sub-clump using a Davis-Chandeasekhar-Fermi analysis. With this magnetic field strength, we find a mass-to-flux ratio $\lambda$= 1.6$\pm$1.1, which suggests that the Oph-B2 clump is slightly magnetically supercritical., Comment: 17 pages, 10 figures, Accepted for publication in ApJ

Published
2018
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166. A First Look at BISTRO Observations of The $\rho$ Oph-A core

Author

Kwon, Jungmi, Doi, Yasuo, Tamura, Motohide, Matsumura, Masafumi, Pattle, Kate, Berry, David, Sadavoy, Sarah, Matthews, Brenda C., Ward-Thompson, Derek, Hasegawa, Tetsuo, Furuya, Ray S., Pon, Andy, Di Francesco, James, Arzoumanian, Doris, Hayashi, Saeko S., Kawabata, Koji S., Onaka, Takashi, Choi, Minho, Kang, Miju, Hoang, Thiem, Lee, Chang Won, Lee, Sang-Sung, Liu, Hong-Li, Liu, Tie, Inutsuka, Shu-Ichiro, Eswaraiah, Chakali, Bastien, Pierre, Kwon, Woojin, Lai, Shih-Ping, Qiu, Keping, Coude, Simon, Franzmann, Erica, Friberg, Per, Graves, Sarah F., Greaves, Jane S., Houde, Martin, Johnstone, Doug, Kirk, Jason M., Koch, Patrick M., Li, Di, Parsons, Harriet, Rao, Ramprasad, Rawlings, Mark, Shinnaga, Hiroko, Van Loo, Sven, Aso, Yusuke, Byun, Do-Young, Chen, Huei-Ru, Chen, Mike C. -Y., Chen, Wen Ping, Ching, Tao-Chung, Cho, Jungyeon, Chrysostomou, Antonio, Chung, Eun Jung, Drabek-Maunder, Emily, Eyres, Stewart P. S., Fiege, Jason, Friesen, Rachel K., Fuller, Gary, Gledhill, Tim, Griffin, Matt J., Gu, Qilao, Hatchell, Jennifer, Holland, Wayne, Inoue, Tsuyoshi, Iwasaki, Kazunari, Jeong, Il-Gyo, Kang, Ji-Hyun, Kang, Sung-Ju, Kemper, Francisca, Kim, Gwanjeong, Kim, Jongsoo, Kim, Kee-Tae, Kim, Kyoung Hee, Kim, Mi-Ryang, Kim, Shinyoung, Lacaille, Kevin M., Lee, Jeong-Eun, Li, Dalei, Li, Hua-Bai, Liu, Junhao, Liu, Sheng-Yuan, Lyo, A-Ran, Mairs, Steve, Moriarty-Schieven, Gerald H., Nakamura, Fumitaka, Nakanishi, Hiroyuki, Ohashi, Nagayoshi, Peretto, Nicolas, Pyo, Tae-Soo, Qian, Lei, Retter, Brendan, Richer, John, Rigby, Andrew, Robitaille, Jean-Franois, Savini, Giorgio, Scaife, Anna M. M., Soam, Archana, Tang, Ya-Wen, Tomisaka, Kohji, Wang, Hongchi, Wang, Jia-Wei, Whitworth, Anthony P., Yen, Hsi-Wei, Yoo, Hyunju, Yuan, Jinghua, Zhang, Chuan-Peng, Zhang, Guoyin, Zhou, Jianjun, Zhu, Lei, Andre, Philippe, Dowell, C. Darren, Falle, Sam, Tsukamoto, Yusuke, Nakagawa, Takao, Kanamori, Yoshihiro, Kataoka, Akimasa, Kobayashi, Masato I. N., Nagata, Tetsuya, Saito, Hiro, Seta, Masumichi, and Zenko, Tetsuya

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present 850 $\mu$m imaging polarimetry data of the $\rho$ Oph-A core taken with the Submillimeter Common-User Bolometer Array-2 (SCUBA-2) and its polarimeter (POL-2), as part of our ongoing survey project, BISTRO (B-fields In STar forming RegiOns). The polarization vectors are used to identify the orientation of the magnetic field projected on the plane of the sky at a resolution of 0.01 pc. We identify 10 subregions with distinct polarization fractions and angles in the 0.2 pc $\rho$ Oph A core; some of them can be part of a coherent magnetic field structure in the $\rho$ Oph region. The results are consistent with previous observations of the brightest regions of $\rho$ Oph-A, where the degrees of polarization are at a level of a few percents, but our data reveal for the first time the magnetic field structures in the fainter regions surrounding the core where the degree of polarization is much higher ($> 5 \%$). A comparison with previous near-infrared polarimetric data shows that there are several magnetic field components which are consistent at near-infrared and submillimeter wavelengths. Using the Davis-Chandrasekhar-Fermi method, we also derive magnetic field strengths in several sub-core regions, which range from approximately 0.2 to 5 mG. We also find a correlation between the magnetic field orientations projected on the sky with the core centroid velocity components., Comment: 22 pages, 11 figures, accepted for publication in ApJ

Published
2018
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172. Tunneling of two-dimensional surface polaritons through nanogaps in atomically thin crystals

Author

Kang, Ji-Hun, Wang, Sheng, and Wang, Feng

Subjects
Physical Sciences, Condensed Matter Physics, Chemical sciences, Engineering, Physical sciences
Abstract

We theoretically investigate the tunneling of two-dimensional surface polaritons (2DSPs) through nanometer-wide gaps in atomically thin crystals. For quantitatively accurate results, we developed a rigorous model based on the diffraction of 2DSPs for strongly confined surface polaritons (i.e., the polariton wavelength much shorter than the free-pace photon wavelength). We find distinctive features of the tunneling of 2DSPs. First, radiation loss during the tunneling is shown to be negligible. Second, the reflection coefficient R and tunneling coefficient T are shown to exhibit an anomalous logarithm singularity in their dependency on the gap width. Even for a gap size over two orders of magnitude smaller than the surface polariton wavelength, an appreciable reflection coefficient was observed in our calculation. Finally, we show that when the gap size increases, the phase of R saturates very rapidly to a nontrivial value of π/4. Based on these results, we further examine resonant tunneling of 2DSP through two identical gaps separated by a distance L, and establish a resonance condition defined by L≈λsp(4n-1)/8 with a positive integer n.

Published
2019

173. Profile and dynamics of infectious diseases: a population-based observational study using multi-source big data

Author

Lin Zhao, Hai-Tao Wang, Run-Ze Ye, Zhen-Wei Li, Wen-Jing Wang, Jia-Te Wei, Wan-Yu Du, Chao-Nan Yin, Shan-Shan Wang, Jin-Yue Liu, Xiao-Kang Ji, Yong-Chao Wang, Xiao-Ming Cui, Xue-Yuan Liu, Chun-Yu Li, Chang Qi, Li-Li Liu, Xiu-Jun Li, Fu-Zhong Xue, and Wu-Chun Cao

Subjects
Infectious disease profile, Big data, Incidence density, Epidemiological characteristics, Spatiotemporal dynamics, Infectious and parasitic diseases, RC109-216
Abstract

Abstract Background The current surveillance system only focuses on notifiable infectious diseases in China. The arrival of the big-data era provides us a chance to elaborate on the full spectrum of infectious diseases. Methods In this population-based observational study, we used multiple health-related data extracted from the Shandong Multi-Center Healthcare Big Data Platform from January 2013 to June 2017 to estimate the incidence density and describe the epidemiological characteristics and dynamics of various infectious diseases in a population of 3,987,573 individuals in Shandong province, China. Results In total, 106,289 cases of 130 infectious diseases were diagnosed among the population, with an incidence density (ID) of 694.86 per 100,000 person-years. Besides 73,801 cases of 35 notifiable infectious diseases, 32,488 cases of 95 non-notifiable infectious diseases were identified. The overall ID continuously increased from 364.81 per 100,000 person-years in 2013 to 1071.80 per 100,000 person-years in 2017 (χ 2 test for trend, P

Published
2022
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175. Synthesis and biological evaluation of 4-(4-aminophenyl)-6-methylisoxazolo[3,4-b] pyridin-3-amine covalent inhibitors as potential agents for the treatment of acute myeloid leukemia

Author

Kang, Ji-Bo, Chen, Lu, Leng, Xue-Jiao, Wang, Jing-Jing, Cheng, Yang, Wu, Shi-Han, Ma, Yi-Yuan, Yang, Li-Jin, Cao, Yu-Hao, Yang, Xiao, Tong, Zhen-Jiang, Wu, Jia-Zhen, Wang, Yi-Bo, Zhou, Hai, Liu, Jia-Chuan, Ding, Ning, Dai, Wei-Chen, Yu, Yan-Cheng, Xue, Xin, Sun, Shan-Liang, Dai, Xiao-Bin, Chang, Liang, Wang, Xiao-Long, Li, Nian-Guang, and Shi, Zhi-Hao

Published
2022
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185. A Phase 1/2 Study of Lazertinib 240 mg in Patients With Advanced EGFR T790M-Positive NSCLC After Previous EGFR Tyrosine Kinase Inhibitors

Author

Cho, Byoung Chul, Han, Ji-Youn, Kim, Sang-We, Lee, Ki Hyeong, Cho, Eun Kyung, Lee, Yun-Gyoo, Kim, Dong-Wan, Kim, Joo-Hang, Lee, Gyeong-Won, Lee, Jong-Seok, Shim, Byoung Yong, Kim, Jin-Soo, Chun, Sang Hoon, Lee, Sung Sook, Kim, Hye Ryun, Hong, Min Hee, Ahn, Jin Seok, Sun, Jong-Mu, Lee, Youngjoo, Lee, Dae Ho, Kang, Ji Ah, Lee, NaMi, Kwon, Mi-Jung, Espenschied, Carin, Yablonovitch, Arielle, and Ahn, Myung-Ju

Published
2022
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197. The AUTOTAC chemical biology platform for targeted protein degradation via the autophagy-lysosome system

Author

Ji, Chang Hoon, Kim, Hee Yeon, Lee, Min Ju, Heo, Ah Jung, Park, Daniel Youngjae, Lim, Sungsu, Shin, Seulgi, Ganipisetti, Srinivasrao, Yang, Woo Seung, Jung, Chang An, Kim, Kun Young, Jeong, Eun Hye, Park, Sun Ho, Bin Kim, Su, Lee, Su Jin, Na, Jeong Eun, Kang, Ji In, Chi, Hyung Min, Kim, Hyun Tae, Kim, Yun Kyung, Kim, Bo Yeon, and Kwon, Yong Tae

Published
2022
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198. Author Correction: The AUTOTAC chemical biology platform for targeted protein degradation via the autophagy-lysosome system

Author

Ji, Chang Hoon, Kim, Hee Yeon, Lee, Min Ju, Heo, Ah Jung, Park, Daniel Youngjae, Lim, Sungsu, Shin, Seulgi, Ganipisetti, Srinivasrao, Yang, Woo Seung, Jung, Chang An, Kim, Kun Young, Jeong, Eun Hye, Park, Sun Ho, Bin Kim, Su, Lee, Su Jin, Na, Jeong Eun, Kang, Ji In, Chi, Hyung Min, Kim, Hyun Tae, Kim, Yun Kyung, Kim, Bo Yeon, and Kwon, Yong Tae

Published
2022
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