Search Results - "Park, Ki Hyeon"

Optimal Families of Perfect Polyphase Sequences From the Array Structure of Fermat-Quotient Sequences by Ki-Hyeon Park, Hong-Yeop Song, Dae San Kim, Golomb, Solomon W.

“…We show that a p-ary polyphase sequence of period p 2 from the Fermat quotients is perfect. That is, its periodic autocorrelation is zero for all non-trivial…”
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A New Driving Method of the Magnetron Power Supply for a Sulfur Plasma Lamp by Kim, Min-Jae, Choi, Won-Shik, Jeong, Il-Woo, Park, Hyun-Chul, Park, Ki-Hyeon

“…This paper presents a new driving method for a sulfur plasma lamp in low-power applications. The newly developed magnetron power supply (MPS) is a…”
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The effects of ankle strategy exercises on unstable surfaces on dynamic balance and changes in the COP by Park, Ki-Hyeon, Lim, Jin-Yong, Kim, Tae-Ho

“…[Purpose] The objective of this study was to examine the effect of ankle strategy exercises on unstable surfaces on balance and walking ability in stroke…”
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The effect of step climbing exercise on balance and step length in chronic stroke patients by Park, Ki-Hyeon, Kim, Da-Yeon, Kim, Tae-Ho

“…[Purpose] The objective of this study was to examine the effect of step climbing exercise on the walking ability of stroke patients. [Subjects and Methods]…”
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Hard X-ray free-electron laser with femtosecond-scale timing jitter by Kang, Heung-Sik, Min, Chang-Ki, Heo, Hoon, Kim, Changbum, Yang, Haeryong, Kim, Gyujin, Nam, Inhyuk, Baek, Soung Youl, Choi, Hyo-Jin, Mun, Geonyeong, Park, Byoung Ryul, Suh, Young Jin, Shin, Dong Cheol, Hu, Jinyul, Hong, Juho, Jung, Seonghoon, Kim, Sang-Hee, Kim, KwangHoon, Na, Donghyun, Park, Soung Soo, Park, Yong Jung, Han, Jang-Hui, Jung, Young Gyu, Jeong, Seong Hun, Lee, Hong Gi, Lee, Sangbong, Lee, Sojeong, Lee, Woul-Woo, Oh, Bonggi, Suh, Hyung Suck, Parc, Yong Woon, Park, Sung-Ju, Kim, Min Ho, Jung, Nam-Suk, Kim, Young-Chan, Lee, Mong-Soo, Lee, Bong-Ho, Sung, Chi-Won, Mok, Ik-Su, Yang, Jung-Moo, Lee, Chae-Soon, Shin, Hocheol, Kim, Ji Hwa, Kim, Yongsam, Lee, Jae Hyuk, Park, Sang-Youn, Kim, Jangwoo, Park, Jaeku, Eom, Intae, Rah, Seungyu, Kim, Sunam, Nam, Ki Hyun, Park, Jaehyun, Park, Jaehun, Kim, Sangsoo, Kwon, Soonam, Park, Sang Han, Kim, Kyung Sook, Hyun, Hyojung, Kim, Seung Nam, Kim, Seonghan, Hwang, Sun-min, Kim, Myong Jin, Lim, Chae-yong, Yu, Chung-Jong, Kim, Bong-Soo, Kang, Tai-Hee, Kim, Kwang-Woo, Kim, Seung-Hwan, Lee, Hee-Seock, Lee, Heung-Soo, Park, Ki-Hyeon, Koo, Tae-Yeong, Kim, Dong-Eon, Ko, In Soo

“…The hard X-ray free-electron laser at the Pohang Accelerator Laboratory (PAL-XFEL) in the Republic of Korea achieved saturation of a 0.144 nm free-electron…”
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Efficient Reduction of Graphite Oxide by Sodium Borohydride and Its Effect on Electrical Conductance by Shin, Hyeon‐Jin, Kim, Ki Kang, Benayad, Anass, Yoon, Seon‐Mi, Park, Hyeon Ki, Jung, In‐Sun, Jin, Mei Hua, Jeong, Hae‐Kyung, Kim, Jong Min, Choi, Jae‐Young, Lee, Young Hee

“…The conductivity of graphite oxide films is modulated using reducing agents. It is found that the sheet resistance of graphite oxide film reduced using sodium…”
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Fermi Level Engineering of Single-Walled Carbon Nanotubes by AuCl 3 Doping by Kim, Ki Kang, Bae, Jung Jun, Park, Hyeon Ki, Kim, Soo Min, Geng, Hong-Zhang, Park, Kyung Ah, Shin, Hyeon-Jin, Yoon, Seon-Mi, Benayad, Anass, Choi, Jae-Young, Lee, Young Hee

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Absorption spectroscopy of surfactant-dispersed carbon nanotube film: Modulation of electronic structures by Geng, Hong-Zhang, Lee, Dae Sik, Kim, Ki Kang, Han, Gang Hee, Park, Hyeon Ki, Lee, Young Hee

“…The electronic structures of SWCNTs were monitored systematically using acid treatment through peak intensities and peak positions of absorption spectrum. The…”
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FEL performance achieved at PAL‐XFEL using a three‐chicane bunch compression scheme by Kang, Heung-Sik, Yang, Haeryong, Kim, Gyujin, Heo, Hoon, Nam, Inhyuk, Min, Chang-Ki, Kim, Changbum, Baek, Soung Youl, Choi, Hyo-Jin, Mun, Geonyeong, Park, Byoung Ryul, Suh, Young Jin, Shin, Dong Cheol, Hu, Jinyul, Hong, Juho, Jung, Seonghoon, Kim, Sang-Hee, Kim, KwangHoon, Na, Donghyun, Park, Soung Soo, Park, Yong Jung, Han, Jang-Hui, Jung, Young Gyu, Jeong, Seong Hun, Kim, Min Jae, Lee, Hong Gi, Lee, Sangbong, Lee, Woul-Woo, Oh, Bonggi, Suh, Hyung Suck, Park, Ki-Hyeon, Lee, Heung-Soo, Khan, D. Z., Raubenheimer, T. O., Wu, Juhao

“…PAL‐XFEL utilizes a three‐chicane bunch compression (3‐BC) scheme (the very first of its kind in operation) for free‐electron laser (FEL) operation. The…”
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Restorable Type Conversion of Carbon Nanotube Transistor Using Pyrolytically Controlled Antioxidizing Photosynthesis Coenzyme by Kang, Bo Ram, Yu, Woo Jong, Kim, Ki Kang, Park, Hyeon Ki, Kim, Soo Min, Park, Yongjin, Kim, Gunn, Shin, Hyeon‐Jin, Kim, Un Jeong, Lee, Eun‐Hong, Choi, Jae‐Young, Lee, Young Hee

“…Here, a pyrolytically controlled antioxidizing photosynthesis coenzyme, β‐Nicotinamide adenine dinucleotide, reduced dipotassium salt (NADH) for a stable…”
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Machine Performance of PAL-XFEL by Kang, Heung-Sik, Yang, Haeryong, Nam, Inhyuk, Kim, Gyujin, Heo, Hoon, Min, Chang-Ki, Kim, Changbum, Lee, Heung-Soo, Park, Ki-Hyeon

“…The hard XFEL operation procedure established at PAL-XFEL using e-BBA and incorporating undulator radiation spectrum analysis proved to be highly reliable and…”
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Laminated magnetic flux sensor for thick-steel-plate control by Park, Ki-Hyeon, Kim, Dong Eon, Jeong, Seong-Hoon, Kang, Bongkoo

“…This paper presents a rugged magnetic flux sensor, which can measure the thickness of steel plates and can operate reliably in the poor environment of a…”
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Design consideration of CC-CV controller of LLC resonant converter for Li-ion battery charger by Ki-Hyeon Park, Yeong-Jun Choi, See-Young Choi, Rae-Young Kim

“…In this paper, the design consideration of the dual control scheme of a LLC resonant converter for a Li-ion battery charger is proposed to stabilize operation…”
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Families of perfect polyphase sequences from the array structure of Fermat-Quotient sequences and Frank-Zadoff sequences by Park, Ki-Hyeon, Song, Hong-Yeop, Kim, Dae San

“…We show that a p-ary polyphase sequence of period p 2 from the Fermat quotients is `perfect.' That is, its periodic autocorrelation is zero for all non-trivial…”
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A novel adaptive magnetizing inductance control scheme for high-efficiency LLC resonant converter for PV applications by Ki-Hyeon Park, Yeong-Jun Choi, See-Young Choi, Rae-Young Kim

“…In this paper, A novel control scheme of LLC resonant converter is proposed to maximize energy harvest of photovoltaic resources by adapting an integrated…”
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Development of a magnetic field measurement instrument for compact cyclotrons by Lee, Byeong-No, Kim, Hyun-Wook, Oh, Jin-Hwan, Park, Ki-Hyeon, Chai, Jong-seo

“…A magnetic field measurement instrument for compact cyclotrons has been developed. Forty-eight Hall sensors are used for magnetic measurements, and a set of…”
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Rate allocation for component codes of Plotkin-type UEP codes by Jin Soo Park, Ki-Hyeon Park, Hong-Yeop Song

“…In this paper, we present an analysis on the performance of Plotkin-type UEP codes by using threshold and equivalent channel model under the Gaussian…”
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Properties and crosscorrelation of decimated Sidelnikov sequences by Young-Tae Kim, Ki-Hyeon Park, Hong-Yeop Song, Dae San Kim

“…In this paper, we show that the d-decimation of a Sidelnikov sequence is the d-multiple of another Sidelnikov sequence and vice versa. Also, we calculate the…”
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Quasi-Hadamard matrix by Ki-Hyeon Park, Hong-Yeop Song

“…We apply the Hadamard equivalence to all the binary matrices of size m × n and study various properties of this equivalence relation and its classes. We…”
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A note on classification of binary signal set in the view of Hadamard equivalence by Ki-Hyeon Park, Hong-Yeop Song

“…In this paper, we derive a kind of classification of binary signal set by adopting Hadamard equivalence of binary matrices. We propose a fast algorithm for…”
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