Annealing Effect of Fluorine-Doped SnO2/WO3 Core-Shell Inverse Opal Nanoarchitecture for Photoelectrochemical Water Splitting

조서윤,강순형,윤근,Maheswari Balamurugan,안광순 한국물리학회 2017 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.70 No.2

Fluorine-doped SnO2 inverse opal (FTO IO) was developed on a polystyrene bead template with a size of 350 nm (± 20 nm) by using the sol-gel-assisted spin-coating method. The resulting FTO IO film exhibited a pore diameter of 270 nm (± 5 nm), and a WO3 layer was electrodeposited with a constant charge of 400 mC/cm2, followed by a high-temperature annealing process (400, 475, and 550 C) to increase the crystallinity of the IO films. The annealing temperature affected the morphology and the overall resistance of the thin film, thus significantly affecting the photoelectrochemical performance. In particular, the FTO/WO3 IO film annealed at 475 C exhibited a photocurrent density of 2.9 mA/cm2 at 1.23 V versus normal hydrogen electrode, showing more than a three times higher photocurrent density in comparison with the other samples (550 C), which is attributed to the large surface area and low resistance for the charge transport. Therefore, the annealing temperature significantly affects the morphological and the photoelectrochemical features of the FTO/WO3 IO films.

기상 입력장의 AWS 및 윈드프로파일러 자료동화가 입자기원추적모델에 미치는 영향

조서윤,이지원,이영희,주상원,민기홍 한국기상학회 2023 한국기상학회 학술대회 논문집 Vol.2023 No.10

일부 시판 하드셀처의 특성 및 치아 표면에 미치는 영향

조서윤,김지은,정기호,최충호 대한예방치과·구강보건학회 2023 大韓口腔保健學會誌 Vol.47 No.3

Objectives: To investigate the effect of commercially available hard seltzer on the tooth enamel surface. Methods: Some commercially available hard seltzer were purchased at the market and the characteristics of the beverages were surveyed. Subsequently, Cloud hard seltzer mango was selected for the hard seltzer group (group 4), Jeju Samdasoo for the mineral water group (group 1), Coca-Cola for the cola group (group 2), and Cloud Original for the beer group (group 3). The specimens were immersed in the experimental beverage for 30 minutes, then the surface microhardness and surface condition of the specimens were evaluated. Results: The average pH of the twelve types of hard seltzer in this study were 3.51±0.01 (before stirring) and 3.46±0.01 (after stirring). The pH of experimental beverage were 7.92±0.03 (group 1),2.55±0.01 (group 2), 4.41±0.01 (group 3), and 3.31±0.01 (group 4). Paired t-test of the surface microhardness of enamel before and after beverage immersion found no significant difference ingroup 1 (P>0.05), but a significant difference was observed in groups 2, 3, and 4 (P<0.05). One way ANOVA of the surface microhardness change values (∆VHN, before - after immersion) amonggroups found a statistically significant difference between groups 1 and 3 (9.20±34.82 ∆VHN and 20.20±6.52 ∆VHN) and groups 2 and 4 (82.90±18.08 ∆VHN and 67.10±18.27 ∆VHN) (P<0.05). On scanning electron microscopy, hard seltzer group showed rough and ruined surface condition. Conclusions: This study found a risk of dental erosion due to the low pH of hard seltzer. Therefore, it is suggested that when ingesting hard seltzer, dental erosion should be considered for oral health.

TV 메타버스 예능 프로그램 제작 애로사항과 개선 방안 연구

조서윤,이영주 한국애니메이션학회 2023 애니메이션연구 Vol.19 No.1

As the number of contents grafted with Metaverse technology increases along with the Covid pandemic, TV broadcasters’ production crews are also starting to produce programs in earnest by combining digital human Avatar and AI technology. In this study, the background of TV broadcasters producing entertainment programs incorporating Metaverse technology that require high technology and high production costs, the difficulties in the production process, and the challenges for Metaverse entertainment programs to succeed were examined by conducting in-depth interviews. As a result, the core message of the Metaverse, which is the realization of dreams through merging reality and virtuality, is the main background of production. Difficulties in the production process were found to be the supply and implementation of technology and equipment, huge production costs, and insufficient technical level. Securing production costs and establishing broadcasters’ production and programming policies were essential. 코로나 팬데믹과 함께 메타버스(metaverse) 개념과 기술이 접목되는 콘텐츠가 증가하면서 TV 방송에서도 디지털 아바타(avatar)와 AI 기술을 접목한 프로그램 제작이 본격화되고 있다. 본 연구에서는 고도의기술과 높은 제작비가 필요한 메타버스 기술 접목 예능 프로그램을 TV 방송사가 제작하게 된 배경과 제작 과정에서의 애로사항 그리고 메타버스 예능 프로그램이 성공하기 위한 해결 과제에 대해 알아보고자 프로그램 제작진과 관계자들을 대상으로 심층 인터뷰를 실시하였다. 연구결과, Web 3.0 시대에 발맞춘 새로운 프로그램 형식을 시도하는 방송사 제작진과 기술력을 갖춘 외부 제작자들과의 이해 부합, 현실과 가상의 만남을 통해 꿈을실현하고자 하는 희망이 제작 배경으로 나타났다. 제작 과정에서의 애로사항은 기술·장비 공급 및 구현 과정, 막대한 제작비, 기술 수준의 미흡함인 것으로 드러났다. 향후 TV 메타버스 예능 프로그램 성공을 위해서는 기술개선, 방송사와 외부 기술 제작진의 협업 시스템 구축, 제작비 확보와 방송사의 제작·편성 정책 확립 등이 필수적인 것으로 나타났다.

기상 입력장의 AWS 및 윈드프로파일러 자료동화가 입자기원추적모델에 미치는 영향

조서윤,이지원,이영희,주상원,민기홍 한국기상학회 2023 한국기상학회 학술대회 논문집 Vol.2023 No.11

자료동화를 통한 라그랑지안 모델 이산화탄소 역궤적 개선

조서윤,이지원,민기홍 한국기상학회 2023 한국기상학회 학술대회 논문집 Vol.2023 No.4

1998년 및 2020년의 장마 특성 비교 분석

조서윤,민기홍,이지원 한국기상학회 2022 한국기상학회 학술대회 논문집 Vol.2022 No.10

피부미용사의 근무환경이 직무만족도와 이직의도에 미치는 영향

조서윤,하준호 한국뷰티경영학회 2016 한국뷰티경영학회지 Vol.4 No.2

In recent years, the beauty industry has been rapidly growing, and the personal care skin salon has shown remarkable growth. The area has been diversified and classified through the skin care and clinic of the hospital or the oriental medicine clinic, and the franchise beauty salon competition in scale also intensified. However, most of the beauty salons have strengthened their quantitative competitiveness through the expansion of facilities and advertising and publicity, but the qualitative lack of knowledge and information on skin beauty is revealed, and such quantitative expansion and lack of qualities make the opportunity of leaving. In addition, it recognizes the importance of talent development and job environment of the skin beauty salon and helps the management of the skin beauty salon by understanding the cause of the turnover phenomenon, thereby improving the quality level of the service in the skin beauty industry as a whole, We will use this data as basic data to overcome the problems of beauty industry and to study reasonable manpower management and alternatives to actively cope with various and rapid changes.

윤치호 번역의 『찬미가』(1908) 연구

조서윤 ( Jo Seo-yoon ) 한국음악사학회 2018 한국음악사학보 Vol.61 No.-

By making reference to the study of Ch'anmiga 『讚美歌』(1908), i. e. Christian Hymn, translated by Yun Ch’i-ho 尹致昊, this research looks at a complicated social phenomenon at the time. In his point of view, this was a good way to overcome internal and external difficulty of the late 19th century Choson. In a national effort to become free from the Japanese colonial rule of the time, he intended to deliver useful information through analyzing themes of 15 hymnal songs from Ch'anmiga (1908) by bringing it from church to the public. Yun Ch’i-ho believed that the only way to save Choson citizens from several corrupted politicians was to abolish its dynasty and government and to strengthen patriotism and the will of enlightenment by making use of Western civilization and Christian gospel in Ch'anmiga (1908). Next year marks the 100th anniversary of March First Independence Movement. As it enters 2019, with lots of attention in the study of music of the time and a paradigm shift, study of modern music would open a new horizon and meaningful challenges from different levels would be newly arranged.

이상준(李尙俊) 속곡집 연구

조서윤 ( Jo Seo-yoon ) 민족음악학회 2020 음악과 민족 Vol.0 No.59

이 논문은 전통과 근대의 음악매개자로서의 이상준을 살펴보고 이상준의 속곡집을 분석하였다. 이상준은 1914년 조선정악전습소를 졸업하던 해에 근대전환기의 새로운 음악에 대한 고민과 성찰의 결과로 『조선속곡집 상권』을 편찬하였고, 『신찬속곡집』과 『조선속곡집』을 차례로 발간하였다. 이상준의 속곡집 연구는 상호문화적인 관점에서 전통음악을 계승하여 발전시키면서 새로운 서양음악을 받아들이고자 하였음을 밝히는데 의의가 있다. 이상준은 조선이 문명화된 서양의 음악문화를 수용하여 진보해 나가야 한다고 생각하였고, 이러한 조선악과 서양악의 공존만이 20세기 초의 조선이 당면한 조선악의 음악적인 위기를 극복하는 방법이라 생각했던 것으로 보여진다. This thesis is written to examine Yi Sang Jun as a mediator between traditional music and modern music and to analyze his folk song collection. In the year of 1914, when he graduated from Joseon Court Music School, after giving much thought to new music in the transitional period of modern era, he complied the first volume of Joseon Sokgokjib(Traditional Folk Song Collection in Joseon Dynasty) in 1914 and published Sinchan Sokgokjib in 1921 and Joseon Sokgokjib in 1929 one after another. This study of his song collection carries a significant meaning in that it reveals that he accepted western music culture while inheriting and developing traditional music. It seems that with the perspective of interculturalism, he thought that Joseon should make progress by accepting civilized western music and that coexistence of Joseon and Western music is the only way to overcome Joseon's musical crisis that Joseon faced in the early of 20th century.