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.

수치모델 자료동화를 위한 GK-2A 적외채널 관측오차 개선에 따른 강수 예측성 분석

조서윤,민기홍 한국기상학회 2024 한국기상학회 학술대회 논문집 Vol.2024 No.4

기상 입력장의 AWS 및 윈드프로파일러 자료동화가 입자기원추적모델에 미치는 영향

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

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.

자료동화를 통한 라그랑지안 모델 이산화탄소 역궤적 개선

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

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.

TV 방송 제작진의 생성형 AI 기술 수용에 영향을 미치는 요인: 제작진 인식을 중심으로

조서윤,이영주 한국소통학회 2024 한국소통학보 Vol.23 No.3

본 연구는 생성형 AI 기술이 TV 방송 제작진에 의해 어떻게 인식되는지 살펴보고자기술수용모델을 토대로 생성형 AI 기술 사용에 대한 사용자 태도와 기술 수용 의사에영향을 미치는 요인을 알아보았다. 방송제작진은 PD, 작가, 기타 제작진으로 구성되었으며, 편의적 표본 추출을 통해 설문조사를 수행하였다. 연구 결과, 생성형 AI 사용에대한 제작진의 인식은 크게 긍정적 요인, 부정적 요인, 그리고 기술 완성도 요인으로 분류되었다. 생성형 AI 사용에 대한 긍정적 요인만 인지된 유용성에 유의미한 영향을 미치는 것으로 나타났으며, 인지된 용이성에는 긍정적 요인과 부정적 요인이 모두 유의미한 영향을 주는 것으로 조사되었다. 마지막으로 생성형 AI에 대한 인지된 유용성과 용이성은 사용자 태도에 유의미한 영향을 미치는 것으로 분석되었다. 본 연구결과를 토대로 TV 방송 제작에 있어서 생성형 AI 기술 활용 활성화를 위한 개선점을 제시하였다. This study aims to examine how generative AI technology is perceived by TV production crews, based on the technology acceptance model, and to identify the factors influencing attitudes towards the use of generative AI technology and the intention to accept the technology. The TV production crew consisted of producers (PDs), writers, and other staff, and a survey was conducted using convenience sampling. The study found that the production crew's perceptions of generative AI usage could be categorized into positive factors, negative factors, and technological completeness factors. Only positive factors regarding the use of generative AI had a significant impact on perceived usefulness, while both positive and negative factors significantly affected perceived ease of use. Finally, perceived usefulness and ease of use of generative AI were found to have a significant impact on user attitudes. Based on the results of this study, improvements to promote the use of generative AI technology in TV production were suggested.

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.