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Designation and Application Status of State-Designated Cultural Property, Scenic Sites
Jaehyun Rho,Heekyung Son,Inae Kang,Taehie Park 전북대학교 휴양및경관계획연구소 2017 휴양및경관연구 (J East Asian Landscape Studies) Vol.11 No.1
While designation status of state-appointed cultural properties, promotion status of scenic sites, overlap with natural parks, and relationship with both nine river bends and eight views were reviewed, application and promotion status of scenic sites were analyzed by exploring culture and tourism websites of local governments and tourist leaflets on scenic sites. The results of the analysis are as follows. There are totally 109 designated scenic sites in Korea and these are distributed in 59 local governments, which account for 26.1% of local governments. Accordingly, unequal regional distribution was found to be significant. As a result of the exploration of the status of overlapping between scenic site-designated areas and national, provincial, and county parks, altogether 53 designated scenic sites that account for 48.6%, overlapped with natural parks. Thus, there is a great need for role sharing and cooperation with natural park management entities in terms of experience programs within scenic sites and cultural commentaries. Meanwhile, there is a significant difference among the local governments regarding the efforts in highlighting cultural properties as tourist resources while universal awareness and promotion of scenic sites was found to be very low. Marking scenic sites on leaflets were prone to lag behind those on homepages. The analysis on status of scenic sites revealed that festivals and events were being held in 39.4% of scenic sites and those with longer designation- lapsed years were associated with the prevalence of festivals. Moreover, natural scenic sites located in natural parks were unwilling to be used through local government’s awareness and tourism endeavors compared to historical and cultural scenic sites. Additionally, several wrong descriptions were found on the markings of scenic sites and thus, promotion of scenic site culture and operational management requires urgent improvement.
Contorted polycyclic aromatic hydrocarbon: promising Li insertion organic anode
Park, Jaehyun,Lee, Cheol Woo,Joo, Se Hun,Park, Ju Hyun,Hwang, Chihyun,Song, Hyun-Kon,Park, Young Seok,Kwak, Sang Kyu,Ahn, Seokhoon,Kang, Seok Ju The Royal Society of Chemistry 2018 Journal of Materials Chemistry A Vol.6 No.26
<P>Enhancing the performance of carbon-based anode materials in Li-ion battery (LIB) systems is of considerable interest in terms of next-generation LIB host electrodes, because the unique reversible intercalation-de-intercalation process of such materials ultimately facilitates increases in LIB performance and longevity. This study explored the potential of a new class of carbon-based contorted hexabenzocoronene (c-HBC) as an anode material for high-performance LIB systems. The exploitation of the polymorphic crystalline nature of c-HBC resulted in successful development of a LIB anode based on a newly found crystal phase of trigonal <I>R</I>3̄ by solvent and subsequent thermal annealing. Our in-depth analysis based on cross-sectional transmission electron microscopy, grazing incidence X-ray diffraction, and computational investigation revealed further advantages of using contorted molecules in LIB systems. For instance, the resulting electrochemical characteristics using half-cell architecture clearly reflected single-stage Li insertion behavior associated with the large interspacing and short diffusion length of c-HBC molecule during the discharging process. In addition, the battery exhibited excellent rate capability and cycle endurance, highlighting the suitability of c-HBC as an anode material for high-performance LIBs.</P>
Gyeong Yeol PARK(Gyeong Yeol PARK),Jaehyun HA(Jaehyun HA) 한국스포츠과학회 2023 스포츠과학연구(JSAS) Vol.7 No.2
Purpose: The purpose of this study is to examine the structural relationship among relationship marketing, relationship quality, and behavioral intention toward children sports centers. Research design, data, and methodology: To achieve this purpose, this study employed a convenience sampling method via a questionnaire dissemination. A total of 427 responses were collected from the parents of six children sports centers. Among those, 21 responses were excluded as they were not completed, leaving 406 valid data. For hypotheses test, the collected data was computed in SPSS 27.0 and AMOS 27.0, and analyzed with frequency analysis, correlation analysis, reliability analysis, confirmatory factor analysis, and structural equation modeling analysis. Results: First, relationship marketing had a positive influence on relationship quality. Second, relationship marketing had a positive influence on behavioral intention. Third, relationship quality had a positive influence on behavioral intention. Conclusions: Results showed that relationship marketing had a positive influence on relationship quality and behavioral intention. Moreover, relationship quality had a positive influence on behavioral intention. These findings indicate a positive function of relationship marketing in building psychological and behavioral outcomes in the context of children sport industry. Given this, implications of relationships among research variables were discussed.
Jaehyun Park,Shihong Park 전력전자학회 2017 JOURNAL OF POWER ELECTRONICS Vol.17 No.5
This paper presents a high-side switch driver IC capable of improving the current sensing accuracy and providing reverse battery protection. Power semiconductor switches used to replace relay switches are encumbered by two disadvantages: they are prone to current sensing errors and they require additional external protection circuits for reverse battery protection. The proposed IC integrates a gate driver and current sensing blocks, thus compensating for these two disadvantages with a single IC. A p-sub-based 90-V 0.13-μm bipolar-CMOS-DMOS (BCD) process is used for the design and fabrication of the proposed IC. The current sensing accuracy (error ≤ ±5% in the range of 0.1 A–6.5 A) and the reverse battery protection features of the proposed IC were experimentally tested and verified.
Outcoupling Efficiency Analysis of OLEDs Fabricated on a Wrinkled Substrate
Park, Jun-Hwan,Chu, Woo-Sung,Oh, Min-Cheol,Lee, Keunsoo,Moon, Jaehyun,Park, Seung Koo,Cho, Hyunsu,Cho, Doo-Hee IEEE 2016 Journal of display technology Vol.12 No.8
<P>Enhancement of outcoupling efficiency of OLEDs by using a buckled or wrinkled substrate has been recently reported by several groups, while an optical analysis for understanding the coupling between various modes in OLED devices has not been conducted. For various wrinkle shape, FDTD simulation was conducted to find the external quantum efficiency improved by the coupling into a radiation mode, and the power fraction of various modes existing in the OLED device was examined. Consequently, we found that the coupling between TE mode and surface plasmon mode was critically affecting the fraction of outcoupled mode. For confirming the simulation results with an experiment, the wrinkled OLED device was fabricated by incorporating a novel UV curable liquid prepolymer material. The experimental result corresponded well to the prediction from FDTD analysis.</P>
Methylation quantitative trait loci analysis in Korean exposome study
Jaehyun Park,Sung Ok Kwon,San‑Ha Kim,Seung Jun Kim,Eun Jung Koh,Sungho Won,Woo Jin Kim,Seung Yong Hwang 대한독성 유전단백체 학회 2020 Molecular & cellular toxicology Vol.16 No.2
Background Environmental exposure and genotype variation influence DNA methylation. Studies on the effects of genotype variation were performed mainly on European ancestries. We analyzed the genetic effects on cord blood methylation of Koreans. Methods As part of the Korean Exposome study project, DNA was extracted from 192 cord blood samples for analysis. Cord blood samples were genotyped via Asian Precision Medicine Research Array analysis and methylation was measured using the Methylation EPIC Beadchip kits. The associations between genotypes and CpG methylation were analyzed with matrix eQTL. Results Conditional analysis revealed 34,425 methylation quantitative trait loci (mQTLs), and trans-mQTLs constituted 7.2% of all the associated CpG sites. About 80% of the total trans-associations were trans-chromosomal and the related SNPs were concentrated on chromosome 19. According to the results of DAVID, cis-mQTL-related SNPs resulting in amino acid substitutions were related to signal peptides or glycosylation. Conclusion We identified genotype variations associated with DNA methylation in the cord blood obtained from Koreans.