벤처기업에 대한 투자기준 : Venture Capitalist들의 시각을 중심으로

원상호,전영걸 慶熙大學校 大學院 院友會 2000 高凰論集 Vol.26 No.-

Application of RTI to Improve Image Clarity of a Trace Fossil Cochlichnus Found from the Jinju and Haman Formations

원상호,공달영 대한자원환경지질학회 2023 자원환경지질 Vol.56 No.4

A total of 64 specimens of trace fossils were collected from the Jinju Formation of the construction site of Jinju Aviation Industrial Complex, and from the Haman Formation of Namhae Gain-ri fossil site. The fossils are continuously and regularly meandering sinecurve in shape. The fossil varies in morphology: width between 0.2 and 5.6 mm, wavelength between 1.5 and 28 mm, and amplitude between 0.9 and 7.9 mm; the Jinju specimens are commonly wider than the Haman ones. The ratio of wavelength to amplitude is more or less regular regardless of width of the specimen, and the linear correlation of the ratios shows that the Jinju specimens fit better than the Haman specimens. Taking all morphometric parameters, specimens in all size ranges are temporarily identified as ichnospecies Cochlichnus anguineus. In order to obtain more distinct and clearer images of Cochlichnus, we selected two specimens and applied a new imaging technology RTI. For photography of the trace fossils, 50 to 80 images were taken per set with photometric lighting close to the surface and horizontally. RTI technology clearly showed that the images of tiny fossils were improved: the surface contrast become sharper and messy and unnecessary information disappeared. Currently, RTI technology is used in many fields including preservation of cultural properties and archaeology. As a consequence, we hope to apply this technique to the field of paleontology, especially to the study of trace fossils of very small size.

ICT기반 융합기업의 성공 요인 및 정책방향에 대한 연구

원상호,양해술 한국디지털정책학회 2015 디지털융복합연구 Vol.13 No.4

Biosensor of micro-arrayed Polydiacethylene(PDA) Liposome conjugated with gold nanoparticles for signal enhancement

김우현,원상호,심상준 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0

Micro arrayed polydiacetylene liposome biosensor using gold nanoparticles for signal enhancement

김우현,원상호,심상준 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1

Polydiacetylene (PDA) liposomes which possess unique properties and that properties allow liposomes to change color and emit fluorescence in response to stimulus such as temperature, antibody-antigen interaction, variations in pH, mechanical stress and organic solvent. This material has been extensively studied as signal transducers in biosensor applications. In this research, we demonstrated an antibody-based biosensor using PDA liposomes for detection of hIgE. Target hIgE chemically bound to antibodies-immobilized PDA liposomes and the fluorescence responses were a little bit increased depending on target protein concentration. On the other hand, in case of the addition of gold nano particles-conjugated polyclonal antibody on the liposomes, fluorescent responses dramatically increased depending on target protein concentration. As the results, we could confirm that gold nano particles-conjugated polyclonal antibody affect fluorescent signal amplification of PDA liposomes chip. This strategy can be useful to detect proteins of ultra low concentration.

개인용 이동 수단용 안전모 보관함의 설계 및 제작에 관한 연구

조장현,김동준,원상호,정민재,정형권 한국기계기술학회 2023 한국기계기술학회지 Vol.25 No.3

In this paper, we introduce the result of the locker of the safety helmet to protect the user’s life from accidents of personal mobility, i.e. electrical-scooter, electrical bicycle and kick-board. Through Arduino kit which is the one of common open source computing platform, electric circuit and equipment to fulfil the functions of the locker of the safety helmet is designed and made. Especially the functions which are protected from the damage of humidity and sterilization of bacteria will be automatically operated in locker by Arduino board and bluetooth module with various sensors. The dimension of the locker is designed using CATIA program and made with ABS(Acrylonitrile Butadiene Styrene) resin to keep and lock the helmet.

침수피해 영향인자 분석을 통한 호우침수위험도 예측 모델 연구

이현종,류성현,원상호,조은주,김승욱,조기훈 한국방재학회 2016 한국방재학회논문집 Vol.16 No.3

In this study, we calculated the risk of flooding rains in Seoul districts through a regression analysis. The Results of regression analysis present it to us that ‘weighted hourly rainfall’, ‘capacity of rainwater recycling facility’, ‘vulnerable housing’(single·multiplex housing density, basement·semi-basement housing rate), ‘topography drainage’(lowlands rate, average slope, drainage pump capacity), imperviousness ratio are powerful factors to damage by order. Non-standardized regression coefficients multiplied by time duration to hourly rainfall classified section created a derived variable indicating the risk of flooding. Capacity of rainwater recycling facility were identified to affect a significant negative flood damage. The Model of this study could be used as basis to establish adapt disaster prevention against heavy rainfall damage. 본 연구에서는 회귀분석을 통하여 서울시의 자치구별 호우침수위험도를 산출하였으며, 호우에 의해 발생하는 침수피해의 주요 영향인자를 제시하고자 하였다. 주요 영향인자 중 가중시강우, 저류조 용량, 취약주택(단독다세대주택 밀집도, 지하·반지하주택비율), 지형배수(저지대율, 평균경사도, 배수펌프량), 불투수율 순으로 영향력이 크게 나타남을 알 수 있었으며, 주요 영향인자를 바탕으로 호우침수 위험도 예측 모델을 개발하였다. 시강우량 구간대의 횟수와 침수 피해 데이터의 상관성을 분석하여 시강우량 구간 횟수별 침수위험도를 나타내는 파생변수를 만들었다. 회귀분석을 통해 산출된 비표준화 회귀계수를 시강우 구간대별로 지속한 시간만큼 곱해 침수위험도를 추정하는 방식을 사용하였다. 빗물저류조 용량이 침수 피해에 유의하게 음의 영향을 미치는 것을 규명하였다. 본 연구에서 제시한 모델은 호우침수피해에 대한 객관적이고 합리적인 방재 대책을 수립할 수 있는 기초 자료로서 활용될 수 있을 것이다.

대용량 기후모델자료를 위한 통합관리시스템 구축

이재희,성현민,원상호,이조한,변영화 한국기상학회 2019 대기 Vol.29 No.1

In this paper, we introduce a novel Climate & Environment Database System (CEDS). The CEDS is developed by the National Institute of Meteorological Sciences (NIMS) to provide easy and efficient user interfaces and storage management of climate model data, so improves work efficiency. In uploading the data/files, the CEDS provides an option to automatically operate the international standard data conversion (CMORization) and the quality assurance (QA) processes for submission of CMIP6 variable data. This option increases the system performance, removes the user mistakes, and increases the level of reliability as it eliminates user operation for the CMORization and QA processes. The uploaded raw files are saved in a NAS storage and the Cassandra database stores the metadata that will be used for efficient data access and storage management. The Metadata is automatically generated when uploading a file, or by the user inputs. With the Metadata, the CEDS supports effective storage management by categorizing data/files. This effective storage management allows easy and fast data access with a higher level of data reliability when requesting with the simple search words by a novice. Moreover, the CEDS supports parallel and distributed computing for increasing overall system performance and balancing the load. This supports the high level of availability as multiple users can use it at the same time with fast system-response. Additionally, it deduplicates redundant data and reduces storage space.

전동 킥보드용 안전모 보관함 설계 및 제작

김동준,김수호,원상호,정민재,정형권,하재호,조장현 한국기계기술학회 2022 한국기계기술학회 학술대회논문집 Vol.2022 No.11

천연기념물 진주 충무공동 익룡·새·공룡발자국 화석산지의 오염물 형성 메커니즘과 관리방안

최명주(Myoungju Choie),원상호(Sangho Won),이태종(Tea Jong Lee),이성주(Seong-Joo Lee),공달용(Dal-Yong Kong),이명성(Myeong Seong Lee) 대한자원환경지질학회 2023 자원환경지질 Vol.56 No.6

익룡 발자국의 개체 및 밀집도 측면에서 세계 최대 규모로 알려진 진주 충무공동 익룡·새·공룡발자국 화석산지는 2011년 천연기념물로 지정된 이래, 2018년 일부 화석층을 현장 보존하기 위해 보호각을 설치하였다. 이 중 제2보호각에 관리중인 화석층은 기 보고된 발자국 중 약 17%에 달하는 익룡·수각류·조각류 발자국(총 679개)이 단일 층준에서 발견되어 학술적 가치가 크지만 물리적, 화학적 손상이 지속적으로 발생하여 발자국의 관찰에 어려움이 있다. 특히 화석층 표면을 피복하는 유백색 오염물은 석고와 대기오염물로 구성된 복합체의 누적현상에서 기인한다. 오염물을 구성하는 석고는 화석층 하부층준에서 기원한 칼슘과 잔디의 생육활동으로 공급되는 황이 보호각 후방의 잔디가 식재된 토양층에서 집수된 지하수에 의해 용출되고, 보호각의 일대의 수분 순환 과정에서 화석층 표면에 증발잔류하며 결정화된다. 또 다른 오염물 구성체인 화분·광물 등은 분진 배출이 어려운 보호각 갤러리창을 통해 풍성으로 유입된다. 따라서 상이한 기원을 가진 두 오염물로부터 화석층을 보존하기 위해서는 보호각의 수분 및 대기 순환 제어와 지속적인 오염물 제거가 필요하다. 분진상의 석고와 대기 오염물은 스팀 세정법으로 충분한 제거 효과가 있으며, 암회색 셰일인 화석층은 레이저 흡수능이 커 흔적화석과 퇴적구조의 물리적 손실을 동반하는 레이저 세정법은 가급적 지양하는 것이 바람직하다. Tracksite of pterosaurs, birds, and dinosaurs in Chungmugong-dong in Jinju was designated as a natural monument in 2011 and is known as the world's largest in terms of the number and density of pterosaur footprints. This site has been managed by installing protection buildings to conserve in 2018. About 17% of the footprints of pterosaur, theropod, and ornithopod in this site under management in the 2nd protection building are of great academic value, but observation of footprints has difficulties due to continuous physical and chemical damage. In particular, the accumulation of milk-white contaminants is formed by the gypsum and air pollutant complex. Gypsum remains evaporated with a plate or columnar shape in the process of water circulation around the 2nd protection building, and the dust is from through the inflow of the gallery windows. The aqueous solution of gypsum, consisting of calcium from the lower bed and sulfur from grass growth, is catchmented into the groundwater from the area behind the protection building. Pollen and a few minerals other constituents of contaminants, go through the gallery window, which makes it difficult to expel dust. To conserve the fossil-bearing beds from two contaminants of different origins, controlling the water and atmospheric circulation of the 2nd protection building and removing the contaminants continuously is necessary. When cleaning contaminants, the steam cleaning method is sufficiently effective for powder-shaped milk-white contaminants. The fossil-bearing bed consists of dark gray shale with high laser absorption power; the laser cleaning method accompanies physical loss to fossils and sedimentary structures; therefore, avoiding it as much as possible is desirable.