경제 불황이 광고 제작에 미치는 영향

이채현,이채현 한국마케팅관리학회 2021 한국마케팅관리학회 학술대회 Vol.2021 No.11

COVID-19 팬데믹의 지도화 동향에 대한 비판적 검토

이채현,하은혜,김감영 한국지도학회 2021 한국지도학회지 Vol.21 No.2

코로나바이러스감염증-19(COVID-19) 팬데믹 이후 시공간적 차원이 확대된 방대한 데이터를 보다 효과적으로 시각화할 필요성이 대두되었다. 본 연구의 목적은 COVID-19의 지도화 동향을 검토하고, 지도상에서 감염병의 시공간적 차원을 함께 재현하는 대안적 지도화 방안을 모색하는 것이다. 이를 위하여 COVID-19 데이터의 지도화 또는 지리적 시각화 관련 지도학적 논의를 포함하는 연구들을 광범위하게 검토하였다. COVID-19 정보 제공을 위해 가장 보편적으로 사용되는 기법인 대시보드는 정적 지도로서, 시공간적 차원이 동시에 변화하는 COVID-19의 역동성을 보여주지 못한다는 한계를 지닌다. 이러한 한계를 보완하기 위하여 지도 기호로서 그래프의 활용, 애니메이션 등 지도상에 시간적 차원을 반영하는 다양한 시도가 있었다. 선행연구 검토를 토대로, 본 연구는 시계열 스트립과 Dorling 카토그램 알고리즘을 적용하여 지도상에서 현상의 공간적 패턴과 시간에 따른 추이를 직관적으로 인지할 수 있는 대안적인 지리적 시각화 방안을 제시하였다. 본 연구는 팬데믹 시대에서 시공간적 차원이 확대된 지도 제작의 가능성을 확인하였다는 점에서 지도학적 의의를 가진다. Coronavirus Disease 2019 (COVID-19) Pandemic has raised the necessity of more effective visualization of vast data with expanded spatiotemporal dimensions. The purpose of this paper is to review the COVID-19 mapping trends and to suggest alternatives of mapping techniques that represent the spatiotemporal dimensions of the epidemic. To this end, this paper has reviewed studies that include discussions regarding mapping or geovisualization of COVID-19. The most commonly used technique for providing COVID-19 information is dashboard, which has limitations that they can’t reflect the dynamic of the epidemic as static map. To make up for these limitations, there have been various attempts to reflect temporal dimensions on the map, including the utilization of graphs as map symbols, and animations. Based on the review of prior study, this paper applied temporal strips and the Dorling catogram algorithm to suggest an alternative geovisualization techniques that can help map readers intuitively recognizes spatial patterns and temporal trends of phenomena on maps. This paper has cartographic significance in that it identified the possibility of map-making with expanded spatiotemporal dimensions in the Pandemic era.

Strategy to Obtain Photostability of Organic-inorganic Hybrid Perovskite

이채현,이수정,우연수,박득희,신예지,이유정,박세은,윤석준 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-

From late 20^th century, the alternative energy resources have been studied to satisfy the energy demand, one of serious social issues. Among the renewable energy resources, solar energy can have the biggest potential of resources. To use the solar energy, researchers have been developed various field, such as solar cells, photocatalysis, hydrogen production, water splitting, and so on. Since 2009, research field about organic-inorganic hybrid perovskite has boomed in current next-generation solar cell research field, then the photoconversion efficiency of the perovskite solar cell (PSC) got the record over 24 % last year. To practicalize the PSCs, it is important to obtain photostability to get long-term stability. However, the early PSCs have one of the critical issues about the photostability: phase segregation. In this presentation, story will be given about fundamentals of the phase segregation of perovskite and how to overcome it to obtain the photostability.

From the Beginning, the Synthetic Strategies of the Perovskite Quantum Dots with High Quality

이채현,강동우,전병민,정지원,김경수,한동훈,박종인,윤석준 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-

Obtaining independent synthetic method for key materials of perovskite quantum dot for next-generation energy industry, are required to be localized due to Japanese export regulations. Perovskite quantum dots formed CsPbI₃-structure using synthesized and purified precursor, PbI₂. This study seeks to find correlation of the main material’s purity and the effect of perovskite quantum dot by making up a way for the main materials of the perovskite quantum dot. Quantitative analysis about the quantum dot were performed through tunneling electron microscope, X-ray diffractometer, scanning electron microscope, UV-visible absorption spectrophotometer, photoluminescence spectrophotometer, and so on. Photoluminescence quantum yield and stability measurements were able to inform that the correlation between purity of the materials and the performance of quantum dots. As a result, as the materials were refined, the performance of the quantum dots were improved.

SNS 뷰티정보 이용이 여대생들의 외모관리동기 및 화장행동에 미치는 영향

이채현,김경희 한복문화학회 2020 韓服文化 Vol.23 No.3

As the penetration of smartphones in societies increases, there is a significant growth in the use of social network systems (SNS), especially among female college students. Female students show considerable interest in their physical appearance, and they are potential customers of the cosmetic industry. Hence, This research surveyed 395 female college stud-ents to determine the relationship between the usage of beauty information on SNS, motiv-ation for their appearance management, and make-up behavior. As a research method, a survey using a questionnaire was used. Statistical analysis was performed using SPSS 25.0 statistic program, with Frequency Analysis, Reliability Analysis, Factor Analysis, Analysis of Variance, Correlation Analysis, Multiple regression Analysis. The results of this study were as follows. First, the information usefulness factor and information diffusion factor among usage characteristics of beauty information on SNS had significant trend acceptance and expressions of sexual attractiveness among appearance management motivations. Second, the information usefulness factor and information diffusion factor had a significant correlation with makeup trend acceptance, conformity, and expression among makeup behavior factors, and the info-rmation diffusion factor and information sharing factor had a significant impact on ostent-atiousness. Also, the information diffusion factor had a significant effect on subjectivity. Third, trend acceptance and expression on sexual attractiveness had a significant relationship with makeup trend acceptance and subjectivity among makeup behavior factors. Trend accep-tance, appearance self-development, and the expression of sexual attractiveness were significant influence factors on conformity. As a result of this study, when beauty information on SNS is useful, the motivation of appearance management increases. Further, it impacts makeup behaviors. Therefore, to meet the needs of the female college student, the development of diverse, useful beauty information contents on SNS is essential. Increasing the motivation of appearance management and make-up behavior can lead to an increase in revenue growth of cosmetics companies.

소득에 따른 신 재생 가능 에너지 소비의 구성 및 기술 효과 연구를 중심으로

이채현 한국정책학회 2021 한국정책학회 춘계학술발표논문집 Vol.2021 No.-

향수

이채현 국제보건미용학회 2022 국제보건미용학회 학술컨퍼런스 Vol.2022 No.11

서비스 현장코칭품질이 서비스접점직원의 자기효능감과 회복탄력성에 미치는 영향

이채현,오해영,오선미,최정일 한국서비스경영학회 2019 서비스경영학회지 Vol.20 No.5

The purpose of this study is to examine the relationship between the coaching quality in service encounter and relationship quality on the self-efficacy and resilience of service encounter staff to improve capacity and service quality of service staff. For the purpose of this study, a structured questionnaire was conducted for those who participated in the coaching program, and the available 276 responses were collected and used for empirical analysis. In the hypothesis test, SPSS 22.0 ver and R-programming were used to analyze the effects of coaching program factor, coaching environment factor, coaching administrative factor, and relationship quality factors, trust and commitment on self-efficacy and resilience. As a result of statistical analysis, coaching program factors, coaching environment factors, and coaching administration factors showed positive effect on trust. Coaching program factors and coaching administrative factors also had a positive effect on commitment, but coaching environment factors don’t affect commitment. In addition, both trust and commitment were found to be significant for self-efficacy and positive effect on resilience. The implications of this study are that organizations recognize the importance of coaching and it could increase self-efficacy and resilience of organizational members through continuous coaching program.

과천 골목에서 바다 건너로…공수처 ‘통신 조회’ 논란

이채현 관훈클럽 2022 관훈저널 Vol.- No.162

Sinter/HIP 공정으로 제조한 SiC whisker/$Al_2O_3$ 복합재료의 소결 및 기계적 물성에 관한 연구

이채현,김종옥,김종희,Lee, Chae-Hyun,Kim, Jong-Ock,Kim, Chong-Hee 배재대학교 자연과학연구소 1995 自然科學論文集 Vol.8 No.1

Alumina 세라믹스의 기계적 물성 증진을 위하여 SiC whisker로 강화시키고 소결 조제 및 소결 온도의 영향을 고찰하였다. Whiker의 소결억제 효과로 인하여 고상소결을 촉진하는 MgO나 $TiO_2$를 소결조제로 사용한 경우에서는 치밀한 소결체를 얻을 수 없었으나, 액상을 형성하는 $Y_2O_3$를 2wt% 첨가한 경우에 양호한 소결밀도를 얻을 수 있었다. whisker 첨가에 의한 기지의 기계적 물성의 증진 효과도 함께 얻을 수 있었다. 강화 효과는 보강재인 whiker 자체의 보강 효과와 함께 입성장 억제 효과가 복합적으로 작용한 것으로 판단되었다. 소결체를 HIP 처리한 경우에는 거의 이론 밀도까지 이르는 아주 치밀한 소결체의 제조가 가능하였으며, 기계적 물성은 상압소결 후의 결과에 비하여 향상됨을 확인할 수 있었다. Effects of sintering additives and sintering temperatures on the sintering behavior and mechanical properties of SiC whisker reinforced alumina composites have been investigated in this study. Dense (>95% TD) composites were obtained by using 2 wt% $Y_2O_3$ as liquid phase sintering additive. But only porous composite could be obtained when the sintering additives were MgO and $TiO_2$, which were known as the sintering additives for solid state sintering of alumina. Bending strength and fracture toughness were enhanced by reinforcement of SiC whisker. It is belived from the microstructure investigation that the enhanced by strength and toughness could be attribute to the reinforcing and grain growth inhibition effects of SiC whisker. After HIP treatment, fully dense composites were obtained and further enhanced mechanical properties achieved.