Strong Band-Filling Effect in Mixed Pb-Sn Perovskite Based Concentrator-Type Photovoltaics

최원빈,오준학 한국공업화학회 2023 한국공업화학회 연구논문 초록집 Vol.2023 No.0

Fundamental Components of Urban Resilience: A Review

최원빈,김현정 한국지역개발학회 2023 韓國地域開發學會誌 Vol.35 No.2

Urban resilience is a concept that is gaining importance among cities, and accepting more acknowledgments as urban hazards approach. Despite the interest it faces, due to the term having various features it has uncertainties and needs rearrangements. In this paper, a review of the studies regarding urban resilience is done by arranging the components through analysis regarding author, time, usage. The arranged components will then be classified into four groups to understand the features urban resilience has. The classification of the components was done into four groups based on the interpretation of the words the components had in the lower hierarchy, its form, and how it explains a city. The classification showed that urban resilience shows a strong tendency towards being an urban function itself.

Cryptol을 이용한 국내 표준 블록 암호 모듈의 자동 정형 검증

최원빈,김승주 한국정보보호학회 2018 정보보호학회논문지 Vol.28 No.1

Cryptographic algorithms are being standardized globally, and the security of cryptographic algorithms has been wellproven. However, there is a need for an improved verification method to verify that the existing verification method iscorrectly implemented according to the standard, because there is a weakness in implementation and it can cause seriousdamage. Therefore, in this paper, we selected ARIA and LEA to be verified among 128-bit or more block cipher modulesperformed by the National Intelligence Service, and propose a method to verify whether it is implemented correctly usingCryptol for high-assurance cryptographic module. 암호 알고리즘은 세계적으로 표준화가 진행되고 있으며, 암호 알고리즘의 안전성은 충분히 입증되어 왔다. 하지만, 기존 검증 방법으로는 구현상의 취약점이 존재하여 심각한 피해를 야기할 수 있기 때문에 표준에 따라 올바르게구현되었는지에 대한 개선된 검증 방법이 필요하다. 그러므로 본 논문에서는 국가정보원에서 수행하는 128비트 이상 블록 암호 모듈 중에서 검증 대상인 ARIA와 LEA를 선정하였고, 고신뢰 암호 모듈을 위해 Cryptol을 이용하여 올바르게 구현되었는지 검증하는 방법을 제시하고자 한다.

New extended conjugated chiral ligand embedded 2D chiral perovkites for circularly polarized light detector

최원빈,박종현,오준학 한국공업화학회 2023 한국공업화학회 연구논문 초록집 Vol.2023 No.1

Therapeutic Duplication as a Medication Error Risk in Fixed-Dose Combination Drugs for Dyslipidemia: A Nationwide Study

최원빈,구현지,정경혜,김은영,유승훈,이민택,정선영 한국임상약학회 2023 한국임상약학회지 Vol.33 No.3

Background & Objectives: Fixed-dose combinations (FDCs) offer advantages in adherence and cost-effectiveness compared to free combinations (FCs), but they can also complicate the prescribing process, potentially leading to therapeutic duplication (TD). This study aimed to identify the prescribing patterns of FDCs for dyslipidemia and investigate their associated risk of TD. Methods: This was a retrospective cohort study involving drugs that included statins, using Health Insurance Review & Assessment Service- National Patient Sample (HIRA-NPS) data from 2018. The unit of analysis was a prescription claim. The primary outcome was TD. The risk ratio of TD was calculated and adjusted for patient, prescriber, and the number of cardiovascular drugs prescribed using a multivariable Poisson model. Results: Our study included 252,797 FDC prescriptions and 515,666 FC prescriptions. Of the FDC group, 46.52% were male patients and 56.21% were aged 41 to 65. Ezetimibe was included in 71.61% of the FDC group, but only 0.25% of the FC group. TD occurred in 0.18% of the FDC group, and the adjusted risk ratio of TD in FDC prescriptions compared to FC was 6 . 44 (95% CI 5 . 30-7. 82). Conclusions: Prescribing FDCs for dyslipidemia was associated with a higher risk of TD compared to free combinations. Despite the relatively low absolute prevalence of TD, the findings underline the necessity for strategies to mitigate this risk when prescribing FDCs for dyslipidemia. Our study suggests the potential utility of Clinical Decision Support Systems and standardizing nomenclature in reducing medication errors, providing valuable insights for clinical practice and future research.

Effect of the Size of Heteroatoms on the Morphology and Charge Transport of Organic Transistors and Their Optoelectronic Properties

최원빈,김서영,이도영,양창덕,오준학 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2

Backbone engineering in organic transistors has become the prominent strategy to enhance their electrical performance. Herein, we report the effects of chalcogen atoms on organic transistors by appending different sizes of chalcogenophenes (furan, thiophene, and selenophene) to thiophene-flanked diazapentalene (DAP) polymer, where long alkyl chain is used as solubilizing group. The phototransistor with a device configuration of Si/SiO2/active layer/Au was fabricated using DAP polymer as active layer and exhibited optical properties in near-infrared (NIR) region. The electrochemical properties, charge transport characteristics, and microfilm analysis are discussed as a function of size of the chalcogenophenes. As the size of the heteroatom increases, dihedral angle of copolymer structure decreases, leading to minimization of steric hindrance and thus, better crystallinity. This study provides insight into structureproperty behaviors in organic transistor characteristics.

초보운전자 교통사고 심각도 요인 분석

최원빈,최미선 대한교통학회 2021 대한교통학회 학술대회지 Vol.85 No.-

본 연구 목적은 사고유형별로 교통사고 피해 심각도에 영향을 미치는 초보운전자의 사고요인을 분석하는데 있다. 교통사고 심각도를 종속변수로 설정하고 사고유형별로 사고심각도에 영향을 미칠 것으로 판단되는 인적요인, 사고요인, 도로요인, 환경요인 중 주요 변수들을 독립변수로 설정하여 운전경력에 따라 분류한 후 이항 로지스틱 회귀분석을 이용하여 분석하였다. 분석 결과, 운전경력이 1년 미만의 그룹에서는 곡선, 경사, 야간에 사고심각도 증가에 영향을 미치며, 1년 이상 ~ 2년 이하 그룹에서는 과속이 사고심각도 증가에 큰 영향을 미치는 것으로 나타나 운전경력이 많아질수록 도로환경요인보다는 인적요인에 의한 사고심각도가 높아지는 것으로 나타났으며 공통된 사고요인 외에 차대 차 사고의 경우 음주운전, 차대사람 사고의 경우 남성운전자, 고령피해자, 보도통행중, 안전운전의무불이행 요인이 운전경력에 따라 사고심각도 증가에 영향을 미치는 것으로 나타났다. 향후에는 다양한 분석기법을 통한 심각도 분석 및 초보운전자 교통안전대책에 활용될 수 있을 것으로 기대된다.

Eco-friendly Solubilizing Phosphonate chain-end group-based copolymers for P-channel Organic Field-Effect Transistors

최원빈,오준학 한국공업화학회 2022 한국공업화학회 연구논문 초록집 Vol.2022 No.1

경관영향 요소별 경관 대비성 평가 - 자연경관에 도입되는 건축물을 중심으로 -

최원빈,신지훈,Choi, Won-Bin,Shin, Ji-Hoon 한국농촌계획학회 2018 농촌계획 Vol.24 No.3

While cities became bigger and bigger since 1990s, many indiscretely high buildings started to be built in the mountain areas inside a city and in the rural areas in the suburb of each city. To regulate such indiscrete developments, the government prepared for some relevant legal and institutional criteria by having enacted the "Landscape Act" and established a strong management means in the legal and institutional aspects by having introduced the natural landscape deliberation system and the landscape deliberation one into the "Natural Environment Conservation Act." However, since some uniform levels of absolute height and no. of stories are suggested legally and institutionally, it is hard to consider the effects of a real building structure onto the relevant landscape. Accordingly, this thesis is intended to grasp the contrast of the landscape elements in the allowable height section, which is presented through landscape sensitivity. As the results from the visual contrast rating on a small apartment complex located in Dangjin and a large scale of apartment complex in Seosan as the apartment complexes surrounded with natural landscapes that were selected as the subjects of this study, the following conclusion can be finalized. First, there were deducted some factors, that is, forms, lines, colors, textures and sizes as the ones with which can measure and evaluate the contrasting properties when a structure gets into a natural landscape. Second, in case of a small scale of apartment complex (in the foreground) compared to a large one (in the foreground), it was found that the contrasting properties were bigger. In addition, it was also found that the contrasting property of the landscape factor of the foreground compared to that of the middle one becomes bigger depending on a distance. Third, as the results from an evaluation on the contrasting properties of the landscape factor depending on the changes of each floor of a structure, it was found that the factors, that is, forms, lines, colors, textures and sizes are very significant. Among those factors, the factors, forms and lines in a small scale of apartment complex (in the foreground) showed each log regression. But in all of the other cases, they showed each line regression. Fourth, as the results from examining the regression coefficients of the landscape factor, the coefficients of the shapes and lines have similar coefficients and the colors and the textures have similar ones, too. In case of the sizes of apartment complexes, the colors and the textures of a large apartment complex (in the foreground) have similar coefficients, in case of that in the middle ground, the shapes and lines have similar coefficients. Fifth, as the results from estimating the contrasting properties of the landscape factor on the floors within the allowed scope of the landscape sensitivity, it was found that the contrasting property was 3.5 to 4.9 in case of a small scale of apartment complex (in the foreground), but 2.5to 3.7 in case of a small scale of one. In case of a large scale of apartment complex, the value was 3.5 to 5.3, but in case of a large one in the middle ground was 2.9 to 4.9. Sixth, it was comprehended that the contrasting properties of the landscape factor become different depending on each size of apartment complex and the distance of a view point. In this study, it is intended to find the meaning from the aspect that the results can be used as the baseline data for comprehending a proper range of heights of structures objectively during a natural landscape deliberation or a landscape deliberation.

다양한 C-rate을 이용한 장주기 응용을 위한 BESS 전력피크 대응 Peak Shaving 알고리즘

최원빈(Won-Bin Choi),카푸노 말론(Capuno Marlon),송화창(Hwa-Chang Song) 대한전기학회 2015 대한전기학회 학술대회 논문집 Vol.2015 No.7