대기-해양 결합 자료동화가 서해 연안지역의 기상예측에 미치는 영향 연구

이성빈,송상근,문수환 한국환경과학회 2022 한국환경과학회지 Vol.31 No.7

The effect of coupled data assimilation (DA) on the meteorological prediction in the west coastal region of Korea was evaluated using a coupled atmosphere-ocean model (e.g., COAWST) in the spring (March 17 26) of 2019. We performed two sets of simulation experiments: (1) with the coupled DA (i.e., COAWST_DA) and (2) without the coupled DA (i.e., COAWST_BASE). Overall, compared with the COAWST_BASE simulation, the COAWST_DA simulation showed good agreement in the spatial and temporal variations of meteorological variables (sea surface temperature, air temperature, wind speed, and relative humidity) with those of the observations. In particular, the effect of the coupled DA on wind speed was greatly improved. This might be primarily due to the prediction improvement of the sea surface temperature resulting from the coupled DA in the study area. In addition, the improvement of meteorological prediction in COAWST_DA simulation was also confirmed by the comparative analysis between SST and other meteorological variables (sea surface wind speed and pressure variation).

도시관광요소가 방문객 만족도에 미치는 영향: 혼잡도의 매개효과를 중심으로

이성빈,정형우,이종현 (사)한국관광레저학회 2019 관광레저연구 Vol.31 No.8

A city is a central place of citizen’s activity and has many kinds of attraction which can attract many people. Especially, shopping is one of the most important and attractive activities of urban tourism. So this study aims to know urban tourism factors which are derived from visitors of the multi-complex shopping mall and mediating effect of crowdedness between urban tourism factors and satisfaction of visitors. For achieving the purpose of this study, data was collected from the 800 visitors of Starfield Mall, COEX on a weekday and a weekend day(June 30, July 3). The results were as follows: First, Urban tourism factor(Convenience of facility) had a significant influence on Crowdedness. Second, Urban tourism factor(Cleanliness and Safety, Convenience of facility and tour attraction) had a significant influence on Satisfaction. Third, Crowdedness had a significant influence on Satisfaction. Lastly, Crowdedness carried out partial mediating effect between Urban tourism factor(Convenience of facility) and Satisfaction. Based on those results, this study not only can suggest the way to activate urban tourism, but also make it possible to know which urban tourism factors have influence on satisfactio

식품이력관리시스템 개선방안에 대한 연구

이성빈,양성범,Lee, Sung-Been,Yang, Sung-Bum 한국식품영양학회 2019 韓國食品營養學會誌 Vol.32 No.6

The purpose of this study was to derive practical improvement measures for the food traceability system that could improve food reliability and secure food safety. To this, in our survey May-June, 2019, 567 adult males and females were analyzed for recognition and experience of the food traceability system, measures to improve the system, and intention to make additional payments to improve the system. In the case of a food safety accident, 2.54 of 5 points were given on if the food was recalled or not. Approximately 77.4 percent of the respondents had never seen indication of a food traceability system, and approximately 93.8 percent had no access to, or experience with, using the system. Most respondents said that the food traceability system should be applied to items that need to be applied. As the volume of data that is recorded and managed by the government is recognized as high, improvement is needed. Finally, it was analyzed that the company intends to pay an additional 1.34% on average to expand its food traceability system. A more sophisticated cost analysis is needed to apply the improvements proposed to complement the plans that are acceptable to consumers and the industry.

식품이력관리시스템 개선방안에 대한 연구

이성빈,양성범 한국식품영양학회 2019 한국식품영양학회 학술대회논문집(학술심포지움) Vol.2019 No.11

확률형 배팅게임 DApp 분석을 통한 블록체인 환경에서의 사후검증 가능한 소프트웨어 기반 의사난수 발생 방법 연구

이성빈,신운섭,김기형 한국정보통신설비학회 2019 한국정보통신설비학회 학술대회 Vol.2019 No.08

In a block environment, generated data should be able to verify that the same result is output when the same procedure is performed as the procedure for generating the data. However, if pseudo-random numbers are involved in data generation, the same procedure does not result in the same number of occurrences and results may differ. The analyzed DApp generates random numbers using unpredictable values in advance, and then discloses these values for post-verification. Through this research, methods are studied for generating pseudo-random numbers that can be post-verified in blockchain environment.

S-63 위암으로 오인된 위결핵 1례

이성빈,박형열,박세령,박종익,민준식,제갈문,양민주,김윤수 대한내과학회 2016 대한내과학회 추계학술대회 Vol.2016 No.1

서론: 복부 결핵은 폐외 결핵의 가장 흔한 형태중 하나로 복막 및 복부 장기의 mycobacterium tuberculosis (Mtb) 감염으로 정의된다. 그 중 위 결핵은 상대적으로 매우 드물며 특징적인 증상, 방사선학적, 내시경적 소견이 부족하여 진단에 어려움이 있어 악성종양으로 오인하여 수술 통한 위절제 후 결핵으로 진단되는 경우가 많다. 이에 저자 등은 위의 악성종양으로 오인되었으나 항결핵제 사용 후 호전된 1예를 경험하여보고하는 바이다. 증례: 79세 남자환자로 수개월 전부터 경구 식이섭취 감소하며 밤에 소화 잘되지 않으며 간헐적인 복부전반의 통증 호소로 본원 내원하였다. 신체 검진에서 의식은 명료하였으며 흉부 진찰 및 심폐음 청진에서 특이 소견은 없었으며 경부 림프절 종대, 간 비장종대도 없었다. 흉부 X-선 검사에서 양 상엽의 과거 결핵병소 관찰, 복부 전산화 단층촬영에서 위 분문부 및 체부를 따라 저음영의 위벽 비후가 관찰되었으며 총간동맥 및 이자 체부 주위에 최대 3.8 cm의 임파선들이 관찰되었다 상부소화관 내시경상 분문부 소만 측에 완만한 융기성 팽륜소견과 중심부 함몰및 궤양 변화 보이는 부위 있어 생검 시행하였으며 생검상 미란, 장화생, 화농 동반한 만성 활동성 위염 소견 있었으며 악성종양 및 결핵을 시사 하는 소견은 없었다. 내시경 생검 조직에서 암세포가 없었지만 복부 전산화 단층촬영 및 내시경 소견에서 악성종양을 배제할 수 없어 개복후 절제 수술 필요성 설명 하였으나 환자 고령으로 환자, 보호자 개복술 원하지 않으시며, 보전적 치료 원하였다. 6개월 뒤 식이 힘들어지며 간헐적 복부 통증 악화로 입원 하였으며 경과관찰 위해 시행한 상복부 내시경 소견에서 이전의 분문부 소만 측의 융기성 팽륜과 궤양 병변 호전되어 반흔성 변화 관찰되었다. 내시경적 소견 호전 양상으로 보아 악성 종양 가능성 떨어지며 결핵 가능성 배제할 수 없어 경험적 항결핵제 3제 요법 시행하였으며, 환자 투약 이후 빠르게 증상 호전되어 1개월 뒤 퇴원 후 외래 진료 지속중이다. 6개월 항결핵제 복용 종료 후 경과관찰 위해 시행한 복부 전산화 단층촬영에서 위벽의 비후소견 다소 호전되었으며 총 간 동맥 및 이자 체부 주위 임파선의 크기 감소 있었다(최대 3.8 cm->1 cm 미만). 고찰: 우리나라와 같이 결핵의 이환율이 높은 지역에서는 위의 궤양성 병변이 있는 경우 조직검사 에서 육아종이나 결핵균이 발견되지 않는다 해도 위결핵 가능성을 배제 할 수 없어 본 증례를 보고하는 바이다.

농업회계 기반 경영컨설팅 속성의 중요도-만족도 분석

이성빈,오상헌,박지인,김근아,정재원 한국국제농업개발학회 2020 한국국제농업개발학회 학술대회 Vol.2020 No.12

국내 제약 산업 수출지원서비스 품질이 기업의 수출 기대치에 미치는 영향

이성빈,이상원 보건의료산업학회 2019 보건의료산업학회지 Vol.13 No.3

Objectives: This study aimed to provide a comprehensive analysis of the relationship between the service quality of the Korea Health Industry Development Institute (KHIDI), along with the utilization of and customer satisfaction with its export supporting program, and the export performance of Korean pharmaceutical companies. Methods: An online and offline survey was conducted on Korean pharmaceutical companies that have used the export supporting program provided by KHIDI. Data on the service quality of KHIDI, utilization of and customer satisfaction with the export supporting program, and company export performance were collected via survey. Results: Results indicated that systemizing and reliability service factors of the export supporting program have a significant impact on customer satisfaction, and customer satisfaction has a significant impact on utilization of the export supporting program. Furthermore, customer satisfaction and utilization of the program have a significant impact on company expectations regarding future export performance. Conclusions: As a result, service quality, utilization, and customer satisfaction were found to affect Korean pharmaceutical company’s expectations regarding their future export performance. The results of this study can significantly impact the development of export supporting programs.

대기-해양 결합모델을 이용한 서해 연안지역 국지기상에 미치는 자료동화 효과

이성빈,송상근,문수환 한국기상학회 2022 한국기상학회 학술대회 논문집 Vol.2022 No.10

1P-482 Cerium-metal oxides prepared by nanocasting synthesis for CO oxidation

이성빈,이정호,박진서,이정화,이정양,김범년,김지만 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1

Combustion of fossil fuels in power plants, motor vehicles, and other incineration processes emits different toxic pollutants (CO, NO_x, SO₂ etc), which are very dangerous to the environment. Particularly, the emission of carbon monoxide poses serious threat to human health as well as global climate change. Thus, the mitigation of CO emission is a paramount interest with the increasing demands of environmental protection. In this work, a series of mesoporous ceria based binary metal oxide catalysts prepared by nano-replication method was evaluated in the CO oxidation reaction. The structure of the catalysts were characterized using powder X-ray diffraction (XRD), nitrogen adsorption & desorption isotherms, Raman spectrums, scanning electron microscopy (SEM), temperature programmed study experiments.