Výsledky vyhledávání

Report

PKS 1424-418: A persistent candidate source of the mm$-\gamma$-ray connection?

Autor: Kim, Dae-Won, Ros, Eduardo, Kadler, Matthias, Krichbaum, Thomas P., Zhao, Guang-Yao, Rösch, Florian, Lobanov, Andrei P., Zensus, J. Anton

We present a long-term strong correlation between millimeter (mm) radio and $\gamma$-ray emission in the flat-spectrum radio quasar (FSRQ) PKS 1424-418. The mm$-\gamma$-ray connection in blazars is generally thought to originate from the relativistic

Externí odkaz: http://arxiv.org/abs/2411.19737

Zobrazit plný text záznamu

Report

Estimation of Distribution Algorithms with Matrix Transpose in Bayesian Learning

Autor: Kim, Dae-Won, Ko, Song, Kang, Bo-Yeong

Estimation of distribution algorithms (EDAs) constitute a new branch of evolutionary optimization algorithms, providing effective and efficient optimization performance in a variety of research areas. Recent studies have proposed new EDAs that employ

Externí odkaz: http://arxiv.org/abs/2407.18257

Zobrazit plný text záznamu

Report

On selection of centroids of fuzzy clusters for color classification

Autor: Kim, Dae-Won, Lee, Kwang H.

A novel initialization method in the fuzzy c-means (FCM) algorithm is proposed for the color clustering problem. Given a set of color points, the proposed initialization extracts dominant colors that are the most vivid and distinguishable colors. Col

Externí odkaz: http://arxiv.org/abs/2407.17423

Zobrazit plný text záznamu

Report

Fuzzy color model and clustering algorithm for color clustering problem

Autor: Kim, Dae-Won, Lee, Kwang H.

The research interest of this paper is focused on the efficient clustering task for an arbitrary color data. In order to tackle this problem, we have tried to model the inherent uncertainty and vagueness of color data using fuzzy color model. By taki

Externí odkaz: http://arxiv.org/abs/2407.06782

Zobrazit plný text záznamu

Report

A new validity measure for fuzzy c-means clustering

Autor: Kim, Dae-Won, Lee, Kwang H.

A new cluster validity index is proposed for fuzzy clusters obtained from fuzzy c-means algorithm. The proposed validity index exploits inter-cluster proximity between fuzzy clusters. Inter-cluster proximity is used to measure the degree of overlap b

Externí odkaz: http://arxiv.org/abs/2407.06774

Zobrazit plný text záznamu

Report

First GMVA observations with the upgraded NOEMA facility: VLBI imaging of BL Lacertae in a flaring state

Autor: Kim, Dae-Won, Janssen, Michael, Krichbaum, Thomas P., Boccardi, Bia, MacDonald, Nicholas R., Ros, Eduardo, Lobanov, Andrei P., Zensus, J. Anton

We analyze a single-epoch Global mm-VLBI Array (GMVA) observation of the blazar BL Lacertae (BL Lac) at 86 GHz from April 2021. The participation of the upgraded, phased Northern Extended Millimetre Array (NOEMA) adds additional sensitivity to the GM

Externí odkaz: http://arxiv.org/abs/2312.05191

Zobrazit plný text záznamu

Akademický článek

TAT-PPA1 protects against oxidative stress-induced loss of dopaminergic neurons

Autor: Kwon, Hyun Jung ^{a, 1}, Jung, Hyo Young ^{b, 1}, Choi, Soo Young ^a, Hwang, In Koo ^c, Kim, Dae Won ^{d, ⁎}, Shin, Min Jea ^{a, ⁎}

Publikováno v: In Molecular and Cellular Neuroscience December 2024 131

Zobrazit plný text záznamu

Report

Radio and $\gamma$-ray activity in the jet of the blazar S5 0716$+$714

Autor: Kim, Dae-Won, Kravchenko, Evgeniya V., Kutkin, Alexander M., Böttcher, Markus, Gómez, José L., Gurwell, Mark, Jorstad, Svetlana G., Lähteenmäki, Anne, Marscher, Alan P., Ramakrishnan, Venkatessh, Tornikoski, Merja, Trippe, Sascha, Weaver, Zachary, Williamson, Karen E.

We explore the connection between the $\gamma$-ray and radio emission in the jet of the blazar 0716$+$714 by using 15, 37, and 230 GHz radio and 0.1$-$200 GeV $\gamma$-ray light curves spanning 10.5 years (2008$-$2019). We find significant positive a

Externí odkaz: http://arxiv.org/abs/2111.03006

Zobrazit plný text záznamu