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1. Pointwise estimates of the Bergman kernel with an exponential weight on the unit ball

Author

Cho, Hong Rae and Park, Soohyun

Subjects
Mathematics - Complex Variables
Abstract

We consider the weighted Bergman space $A^2_\psi(\Bn)$ of all holomorphic functions on $\Bn$ square integrable with respect to a particular exponential weight measure $e^{-{\psi}} dV$ on $\Bn$, where \begin{align*} \psi(z):=\frac{1}{1-|z|^2}. \end{align*} We prove the following estimate for the Bergman kernel $K_\psi(z,w)$ of $A^2_\psi(\Bn)$: \begin{align*} |K_\psi(z,w)|^2\le C\frac{e^{\psi(z)+\psi(w)}}{{\rm Vol}(B_\psi(z,1)){\rm Vol}(B_\psi(w, 1))}e^{-\varepsilon d_\psi(z,w)}, \quad z, w\in\Bn, \end{align*} where $d_\psi$ is the Riemannian distance induced by the potential function $\psi$ and $B_\psi(z,1)$ is the $d_\psi$-ball of center $z$ and radius $1$. The result is motivated by Christ \cite{Chr}., Comment: arXiv admin note: text overlap with arXiv:2207.13937

Published
2024

9. Impact of proton pump inhibitor use on clinical outcomes in East Asian patients receiving clopidogrel following drug-eluting stent implantation

Author

Kim, Ju Hyeon, Hong, Soon Jun, Cha, Jung-Joon, Lim, Subin, Joo, Hyung Joon, Park, Jae Hyoung, Yu, Cheol Woong, Ahn, Tae Hoon, Jeong, Young-Hoon, Kim, Byeong-Keuk, Chang, Kiyuk, Park, Yongwhi, Song, Young Bin, Ahn, Sung Gyun, Suh, Jung-Won, Lee, Sang Yeub, Cho, Jung Rae, Her, Ae-Young, Kim, Hyo-Soo, Kim, Moo Hyun, Shin, Eun-Seok, and Lim, Do-Sun

Published
2024
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11. Different association of atherogenic index of plasma with the risk of high platelet reactivity according to the presentation of acute myocardial infarction

Author

Won, Ki-Bum, Kim, Hyeon Jeong, Cho, Jun Hwan, Lee, Sang Yup, Her, Ae-Young, Kim, Byeong-Keuk, Joo, Hyung Joon, Park, Yongwhi, Chang, Kiyuk, Song, Young Bin, Ahn, Sung Gyun, Suh, Jung-Won, Cho, Jung Rae, Kim, Hyo-Soo, Kim, Moo Hyun, Lim, Do-Sun, Kim, Sang-Wook, Jeong, Young-Hoon, and Shin, Eun-Seok

Published
2024
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14. High platelet reactivity strongly predicts early stent thrombosis in patients with drug-eluting stent implantation

Author

Lim, Subin, Hong, Soon Jun, Kim, Ju Hyeon, Cha, Jung-Joon, Joo, Hyung Joon, Park, Jae Hyoung, Yu, Cheol Woong, Kim, Byeong-Keuk, Chang, Kiyuk, Park, Yongwhi, Song, Young Bin, Ahn, Sung Gyun, Suh, Jung-Won, Lee, Sang Yeub, Cho, Jung Rae, Her, Ae-Young, Jeong, Young-Hoon, Kim, Hyo-Soo, Kim, Moo Hyun, Shin, Eun-Seok, and Lim, Do-Sun

Published
2024
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16. Carleson embedding theorem for an exponential Bergman space on the unit ball

Author

Cho, Hong Rae, Lee, Han-Wool, and Park, Soohyun

Subjects
Mathematics - Complex Variables, 32A36 (Primary), 47B35 (Secondary)
Abstract

We characterize the Carleson measures for an exponential Bergman space on the unit ball of $\mathbb C^n$ in terms of the ball induced by the complex Hessian of the logarithm of the weight function. The boundedness (or compactness) of integral operators, Ces\`{a}ro operators and Toeplitz operators, is given using the Carleson measure (or vanishing Carleson measure) characterization.

Published
2022

29. Impedance characterization of dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene diodes: Addressing dielectric properties and trap effects.

Author

Cho, Hong-rae, Hyung Park, Joon, Kim, Somi, Udaya Mohanan, Kannan, Jung, Sungyeop, and Kim, Chang-Hyun

Subjects
*DIELECTRIC properties, *DIODES, *ORGANIC semiconductors, *THIOPHENES, *P-type semiconductors, *ELECTRONIC equipment
Abstract

Dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene (DNTT) is a widely used small-molecular p-type organic semiconductor. Despite the broad availability of high-performance DNTT transistors, there is a lack of investigation into other devices based on this semiconductor. In this study, rectifying diodes with DNTT as a single transport medium are fabricated and characterized. Realizing unipolar current rectification from asymmetric metal contacts, a number of physical and electrical properties of DNTT are made accessible. Current–voltage measurement, broad-band impedance spectroscopy, drift-diffusion simulation, and equivalent-circuit modeling are combined to quantify important parameters such as dielectric constant, trap energy, and lifetime. These results provide a practical reference for the design and optimization of diverse electronic devices incorporating DNTT. [ABSTRACT FROM AUTHOR]

Published
2024
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31. Mitigating Memorization in Sample Selection for Learning with Noisy Labels

Author

Kong, Kyeongbo, Lee, Junggi, Kwak, Youngchul, Cho, Young-Rae, Kim, Seong-Eun, and Song, Woo-Jin

Subjects
Computer Science - Machine Learning
Abstract

Because deep learning is vulnerable to noisy labels, sample selection techniques, which train networks with only clean labeled data, have attracted a great attention. However, if the labels are dominantly corrupted by few classes, these noisy samples are called dominant-noisy-labeled samples, the network also learns dominant-noisy-labeled samples rapidly via content-aware optimization. In this study, we propose a compelling criteria to penalize dominant-noisy-labeled samples intensively through class-wise penalty labels. By averaging prediction confidences for the each observed label, we obtain suitable penalty labels that have high values if the labels are largely corrupted by some classes. Experiments were performed using benchmarks (CIFAR-10, CIFAR-100, Tiny-ImageNet) and real-world datasets (ANIMAL-10N, Clothing1M) to evaluate the proposed criteria in various scenarios with different noise rates. Using the proposed sample selection, the learning process of the network becomes significantly robust to noisy labels compared to existing methods in several noise types., Comment: 14 pages, 9 figures, spotlight presented at the ICML 2021 Workshop on Subset Selection in ML

Published
2021

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