Zobrazeno 1 - 10
of 184
pro vyhledávání: '"Ki-Man Kim"'
Autor:
Ji-Ae Hong, Hae-ju Ko, Kyo-Nyeo Oh, Moonjong Kim, Jung-Soon Mo, Chul Yung Choi, Ki-Man Kim, Donghyuk Bae
Publikováno v:
Journal of Photochemistry and Photobiology, Vol 20, Iss , Pp 100228- (2024)
Ultraviolet (UV) irradiation has been identified as a key trigger for skin photoaging, characterized by the overproduction of matrix metalloproteinases (MMPs) and reactive oxygen species (ROS), along with the accelerated decomposition of extracellula
Externí odkaz:
https://doaj.org/article/5cf82610795a4882918ea9d7574784a3
Publikováno v:
ETRI Journal, Vol 45, Iss 2, Pp 277-290 (2023)
This paper proposes a method that can reduce the complexity of a system matrix by analyzing the characteristics of a pseudoinverse matrix to receive a binomial frequency division multiplexing (BFDM) signal and decode it using the least squares (LS) m
Externí odkaz:
https://doaj.org/article/2315da308ab44d0aa9b69d1859ef4b3f
Publikováno v:
IEEE Access, Vol 11, Pp 61412-61421 (2023)
The performance of underwater acoustic communication is significantly affected by multipath propagation and Doppler spread. In this paper, we propose a new communication technique called overlapped chirp spread carrier (OCSC) by modifying the existin
Externí odkaz:
https://doaj.org/article/8056ce4b69d242489e9c874f17e4fb98
Publikováno v:
ETRI Journal, Vol 43, Iss 4, Pp 660-673 (2021)
To efficiently use frequency resources, the next 6th generation mobile communication technology must solve the problem of out‐of‐band emission (OoBE) of cyclic prefix (CP) orthogonal frequency division multiplexing (OFDM), which is not solved in
Externí odkaz:
https://doaj.org/article/66b9fb7c39e24a51a54abccccf14f788
Publikováno v:
Foods, Vol 12, Iss 8, p 1675 (2023)
The study investigated the effects of Petasites japonicus (Siebold & Zucc.) Maxim. extract (PJE) and fenofibrate on diet-induced obesity (DIO) in mice. PJE was found to contain various bio-active polyphenolic compounds, including kaempferol, p-hydrox
Externí odkaz:
https://doaj.org/article/1ef5a16493a64eef8a8c5dcaff1a9012
Publikováno v:
ETRI Journal, Vol 42, Iss 6, Pp 859-871 (2020)
A spectrally encapsulated (SE) orthogonal frequency‐division multiplexing (OFDM) precoding scheme for wireless short packet transmission, which can suppress the out‐of‐band emission (OoBE) while maintaining the advantage of the cyclic prefix (C
Externí odkaz:
https://doaj.org/article/5c9b9f9c1dc842c6a9d1516f8bb11c86
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 12 (2016)
An underwater acoustic communication channel is time varying and has multipath propagation with bottom and surface reflection. A rake receiver has time diversity effects in multipath propagation environments. We have to recognize the correct path for
Externí odkaz:
https://doaj.org/article/ab213281dd734b5f8d9b032309024d85
Doppler Estimation Based on Frequency Average and Remodulation for Underwater Acoustic Communication
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 11 (2015)
Underwater acoustic communication channel is time varying and has Doppler effect due to wind, sea surface roughness, and platform motion. We have to recognize the changing channel state and apply it to communication technique for increasing transmiss
Externí odkaz:
https://doaj.org/article/8754de42e42c4031bd8741c24a777656
Autor:
Seung-Yong Chun, Ki-Man Kim
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 9 (2013)
Passive acoustic source tracking using underwater distributed sensors has been a severe problem because of the complexity of the underwater channel and the limited resources of the sensors. In this paper, we propose an acoustic source tracking algori
Externí odkaz:
https://doaj.org/article/6bb4a8fc3de547c6b0380e1479cb9d11
Publikováno v:
The Journal of Korean Institute of Communications and Information Sciences. 47:1895-1897