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도심권 공항 터미널 환경 개선을 위한 빅 데이터 기반의 항공수요예측
조힘찬,곽동기,배정환 한국융합학회 2019 한국융합학회논문지 Vol.10 No.8
2018년 국토교통부의 통계에 따르면, 연평균 항공교통이용자만 국내선 5.07%, 국제선 8.84%가 증가하였다. 한류의 열풍으로 인해 지속적인 외국인 관광객의 수요가 증가하고 있다. 동시에 개인의 삶의 질을 중요시하는 새로운 생활 문화가 자리잡아가고 있으며 이와 더불어 저가 항공사의 출현으로 인해 내국인의 해외 관광 또한 증가하고 있다. 따라서 효율적이고 정확한 항공 수요예측을 진행하여 체계적인 공항 인프라를 조성하는 것이 중요하다. 본 연구에서는 빅 데이터(big data)를 기반으로 하여 도심권 공항의 국내선 및 국제선 장기 수요예측을 진행하였다. 국내선의 경우 2028년 이후 인구 감소에 따라 공항이용객이 다소 감소할 것이며, 국제선은 GDP증가에 따라 지속적으로 증가할 전망이다. 따라서 미래의 항공수요에 대처하기 위해서는 국내 공항의 여객터미널 개선 및 확충이 절실하다. According to the statistics of the Ministry of Land Transport and Transportation in 2018, the average annual average number of air traffic users for has increased by 5.07% for domestic flights and 8.84% for international flights. Korea is facing a steady rise in demand from foreign tourists due to the Korean Wave. At the same time, a new lifestyle that values the quality of life of individuals is taking root, along with the emergence of LCC, and Korean tourists' overseas tours are also increasing, so improvement and expansion of domestic airport passenger terminals is urgently needed. it is important to develop a structured airport infrastructure by making efficient and accurate forecasts of aviation demand. in this study, based on the Big Data, long-term domestic and international demand forecasts for urban airports were conducted.. Domestic flights will see a decrease in the number of airport passengers after 2028, and international flights will continue to increase. It is imperative to improve and expand passenger terminals at domestic airports.
수동적 어깨뼈정렬운동과 유지이완기법이 대학생의 머리척추각(C1~C7)에 미치는 영향 비교
조힘찬,김민지,김보림,김수경,김정은,김지수,박원우,배인한,이석환,엄희지,장명우,장현정,정혜림,조은성,김근조,장상훈,Jo, Him-Chan,Kim, Min-ji,Kim, Bo-rim,Kim, Soo-kyung,Kim, Jung-eun,Kim, Ji-soo,Park, Won-woo,Bae, In-han,Lee, Suk-hwan,Eum, Hee-jee,Jang, 대한물리치료과학회 2019 대한물리치료과학회지 Vol.26 No.2
Purpose: This study purpose to comparison the effects of passive scapular alignment exercise and hold & relaxation technique on craniovertebral angle (C1~C7) with forward head posture due to using variety bag and using computer in healthy subjects. Design: Randomized Controlled Trial. Methods: 22 subjects were divide into two groups: PSAEx group and H/R group two groups. After exercise, the CVA were measured using C7 and tragus. Collected data were statistically analyzed by SPSS 20.2 Results: There were significant differences pre and post the exercise. Conclusion: PSAEx and H/R technique was effective to correct a abnormal CVA posture. The result of this study may helpful as basic data for orthopedic physical therapy.
Influence of A-site cation on the thermal stability ofmetal halide perovskite polycrystalline films
조힘찬,김주성,김영훈,이태우 한국정보디스플레이학회 2018 Journal of information display Vol.19 No.1
This paper reports a comparative study of thermal stability between all-organic metal halide perovskite (MHP) CsPbBr3 and organic–inorganic hybrid MHP (methylammonium lead bromide MAPbBr3). The film morphology, crystal structure, steady-state photoluminescence intensity, and photoluminescence lifetime of CsPbBr3 and MAPbBr3 polycrystalline films were measured after thermal annealing at temperatures from 70°C to 230°C. The CsPbBr3 films exhibited little change in their structural and luminescent properties after being annealed even at 230°C, whereas the MAPbBr3 films exhibited a significant change in such properties due to their decomposition into PbBr2 when annealed at ≥180°C. This study increased the understanding of the difference in the thermal stability of MHP polycrystalline films with different A-site cations.