회원작품 - 아트홀 마당

고영주,Ko, Youngju 대한건축사협회 2023 建築士 Vol.649 No.-

핫스팟 분석을 이용한 도시열섬 취약지 특성 분석 - 전주시를 대상으로 -

고영주,조기환,Ko, Young-Joo,Cho, Ki-Hwan 한국조경학회 2020 韓國造景學會誌 Vol.48 No.5

도시열섬 완화를 위한 계획을 세울 때 가장 먼저 해결해야 할 문제는 도시 내 어느 곳이 열 환경에 가장 취약한 곳인지를 파악하는 것이다. 즉, 도시 내 온도가 상대적으로 더 높은 지역과 낮은 지역(핫스팟과 콜드스팟)이 존재하는지 여부를 파악해야 한다. 본 연구는 전주시를 공간적 범위로 도시열섬의 공간적 밀집지역을 도출하고, 밀집요인을 알아보는데 목적이 있다. 먼저 도시열섬이 밀집해서 발생하는 지역을 알아보기 위해 2017년 Landsat 8 위성영상을 활용해 지표면온도(Land Surface Temperature : LST)를 추출한 뒤 국지적 Moran's I 분석과 Getis-Ord Gi^* 분석을 통해 핫스팟 분석을 실시하였다. 그 결과, 통계적으로 유의한 밀집지역은 전주시 원도심이라 불리는 중심부와 공업지역으로 나타났다. 또한 높은 LST를 유발하는 요인을 알아보고자 토지피복도 중 시가화·건조지역의 상세분류로 상관분석과 회귀분석을 진행한 결과, 주거지역의 단독주거시설, 공업지역의 공업시설, 상업지역의 상업·업무시설이 LST를 높이는 요인으로, 별도의 항목이 존재하지 않는 녹지율을 대신해 변수로 선정한 NDVI가 LST를 낮추는 요인으로 작용하고 있었다. 본 연구의 결과는 도시열섬 저감 정책이 어느 곳을 중심으로 이루어져야 하는지, 가장 먼저 고려해야 할 요인은 무엇인지를 판단하고자 할 때 근거가 된다는 점에서 의의를 찾을 수 있다. Plans to mitigate overheating in urban areas requires the identification of the characteristics of the thermal environment of the city. The key information is the distribution of higher and lower temperatures (referred to as "hotspot" or "coldspot", respectively) in the city. This study aims to identify the areas within Jeonju City that are suffering from increasing land surface temperatures (LST) and the factors linked to such this phenomenon. To identify the hot and cold spots, Local Moran's I and Getis-Ord Gi^* were calculated for the LST based on 2017 images taken using the thermal band of the Landsat 8 satellite. Hotspot analysis revealed that hotspot regions, (the areas with a high concentration of Land Surface Temperature) are located in the old town area and in industrial districts. To figure out the factors linked to the hotspots, a correlation analysis, and a regression analysis taking into account environmental covariates including Normalized Difference Vegetation Index (NDVI) and land cover. The values of NDVI showed that it had the strongest effect on the lowering LSTs. The results of this study are expected to provide directions for urban thermal environment designing and policy development to mitigate the urban heat island effect in the future.

자색당근 첨가가 돈육 햄버거 패티의 품질에 미치는 영향

고영주,유승석,Ko, Young-Joo,Yoo, Seung-Seok 한국식품영양학회 2018 韓國食品營養學會誌 Vol.31 No.3

The purpose of this study was to investigate the effects of black carrot (Daucus carota L.) on the quality characteristics and antioxidant activity of pork patties. Patties were provided with different amounts (0, 2, 4, 6 and 8%) of black carrot. Notably, the cooking loss rate of the group added with 8% black carrot was lowest (p<0.001). As the content of black carrot increased, the L value decreased and the a, b value increased. The texture analysis results showed that the hardness and chewiness to decrease as the amount of black carrot increased (p<0.05). Evaluation of consumer acceptability revealed that the 4% black carrot groups had a higher score in respect to overall preference and taste to the other groups (p<0.05). For antioxidant activities, both total phenolic compounds content and DPPH were increased (p<0.001) as the amount of added black carrot was increased. As a result, it can be concluded that adding the black carrot to patties in processing can improve antioxidant activities and quality of the patties. Considering various aspects of quality, the suitable amount is 4% of total weight.

콘크리트의 불안정 균열성장에 관한 연구

고영주,배주성,Ko, Young Zoo,Bae, Ju Seong 대한토목학회 1991 대한토목학회논문집 Vol.11 No.3

본 연구에서는 ASTM E561-80에서 제안한 방법과는 달리, 반복하중시 측정된 각각의 compliance를 상호비교인자로 활용하여 증가 균열길이를 간접적으로 구하고, 이 값들을 균혈성장 동안에 흡수된 비탄성 에너지를 고려한 변형에너지 해방율개념에 적용하여 구한 저항곡선의 해석으로부터 콘크리트의 불안정 균열성장 개시점을 구하였으며, 또한 굵은골재 최대수치와 시편의 두께변화가 임계파괴인성치에 미치는 영향 등을 고찰하였다. This experimental research evaluated the length of crack extension with the measured compliances as the mutual comparison factors instead of the method proposed in ASTM E561-80. And this research measured the R-curves with the application to the concept of the strain energy release rate that was formulated from the inelastic energy absorbed during the crack growth. With the interpretation of R-curves, this research obtained the starting point of the unstable crack growth, and compared the values of critical fracture toughness with each other, and then examined the effects of variations of the maximum size of coarse aggregate and the thickness of specimen on the values of the critical fracture toughness.

시멘트콘크리트 포장체의 거동연구를 위한 축소모델 배합의 재료적 상사성

고영주,이용우,배주성,Ko, Young-Zoo,Lee, Yeoung-Woo,Bae, Ju-Seong 한국콘크리트학회 1999 콘크리트학회지 Vol.11 No.2

본 연구는 시멘트콘크리트 포장체의 거동연구를 위한 축소모형실험에 앞서 모형시험체의 제작에 가장 중요한 변수인 재료적 상사성을 확보하기 위한 방법론을 기술하였다. 현재 고속도로의 콘크리트 포장 배합설계기준과 동일한 배합비로 제작한 시험편과 골재의 최대치수를 축소하고 W/Cm C/a, S/a, 골재종류를 변수로 하여 총 224개의 원형공시체를 제작하여 그들의 응력-변형률 거동을 분석하므로써 재료적 상사성을 만족하는 모형배합비를 도출하였다. 모형콘크리트 배합비로 쇄석은 C/a 31%에서 S/a 28%, 강자갈은 C/a 30%일 때 S/a 27%가 가장 적합한 것으로 나타났다. 이는 실내 모형실험에 의해 콘크리트포장체의 거동연구를 하고자 할때 모형실험에 대한 신뢰성을 향상시키고, 향후 연구의 기초자료를 제공할 수 있으리라 판단된다. The objective of this study is to provide the information on the small-scale model mix proportion when the behavior of prototype concrete pavement is studied through small-scale model experiments. However it is difficult to obtain a model material to simulate the prototype concrete by scaling the individual components according to the laws of similitude. In this paper, the stress-strain behavior in uniaxial compression is used as a means to correlate material similitude between the prototype and the model concrete. Based on the results of experiments, we compared the stress-strain curves of prototype and model concrete mixes using a nondimensional basis. In order to simulate the stress-stain curves of prototype concrete, it is important that various mix proportions of model concrete selected properly which are varied from aggregate grading, cement-aggregate and sand-aggregate ratio.

위해 근무환경에 대한 간호사의 경험: 현상학적 접근

고영주(Ko, Yeong Ju),홍(손 )귀령(Hong, Gwi-Ryung Son) 한국간호행정학회 2018 간호행정학회지 Vol.24 No.3

Purpose: This study was conducted to expand nurse`s experience of harmful work environments Methods: Data were collected through in-depth dividual interviews and analyzed using Colaizzi phenomenological analysis methodology. Results: Harmful work environments experienced by nurses were categorized as followed: ‘Neglect concerning infections’, ‘Being thrown into a violent working environment’, ‘The hard times of being alone’, ‘Struggling with the harmful work environments’. Conclusion: The results of this study provide a deep understanding of the harmful work environments. It is necessary to create safe work environments and it is important to improve awareness in the system of organizations as well as individuals. Also, it is necessary to develop tools to measure work environment including risk factors.

제주 지역 고혈압 환자의 혈압조절 관련 요인

고영주(Ko, Yeong Ju),박은옥(Park, Eunok) 한국보건간호학회 2013 韓國保健看護學會誌 Vol.27 No.2

Purpose: This study was conducted to identify blood pressure control rate and related factors in hypertensive patients. Methods: Data were collected using face to face survey with measuring blood pressure from 268 hypertensive patients. Results: Subjects without spouses were 2.19 times more likely to control their blood pressures (p=.002). Whenever subjects came up 1 score in the low sodium diet score, they were 1.37 times more likely to control their blood pressures (p=.044). The possibility of blood pressure control rose 1.58 times per point in the stress management score (p=.011) and the sleep and rest score (p=.002). Conclusion: It is important to develop education and intervention program of lifestyle regarding low sodium diet, stress management and sleep and rest, in order to improve the blood pressure control.

작동유체가 양방향성 태양열 열다이오드의 열성능 변화에 미치는 영향 분석

고영주(Ko Yung-Joo),이헌주(Lee Heon-Ju),천원기(Chun Wongee),Chen Kuan,임상훈(Lim Sang-Hoon) 한국태양에너지학회 2008 한국태양에너지학회 논문집 Vol.28 No.1

An experimental investigation has been carried out to study the effects of different working fluids on the behavior and thermal performance of a bi-directional thermodiode. The thermodiode was made up of two rectangular loops mounted between a collector plate and a radiator plate. Rotatable joints between thehorizontal and inclined segments of the loops enable easy alteration of the direction of heat transfer. The loops and the tank were filled with a working fluid for effective heat transfer when the thermodiode was forwarded biased. Six different working fluids were tested with thermal conductivity values ranging from 0.1 to 0.56 W/m-℃, thermal expansion coefficient values ranging from 1.8 x 10⁻⁴ to 1.3 x 10⁻³ K⁻¹, and kinematic viscosity values ranging from 0.65 x 10⁻⁶ to 100 x 10⁻⁶ ㎡/s. Especially, mixtures of Al₂O₃ (30㎚ particle) in deionized water have been tested for the volumetric ratios of 0.01, 0.02, 0.03, 0.1, 0.2%. Each experiment was carried out after the loop was filled with a working fluid for effective heat transfer and the thermodiode was forwarded biased. The solar thermodiode was heated by a radiant heater consisting of 20 halogen lamps that generated a heat flux of about 1000 W/㎡ on the collector surface. Results are given in terms of temperature development in different parts of the loop as heat is delivered from its hot end to the surrounding atmosphere by the radiator made of copper plates.

소화성 십이지장궤양에서 복강경수술에 대한 임상적 고찰

고영주(Young Ju Ko),최상용(Sang Yong Choi),김진승(Chin Seoung Kim) 대한외과학회 1995 Annals of Surgical Treatment and Research(ASRT) Vol.48 No.4

이상유동장의 기포분율 측정을 위한 다전극 임피던스 기법

고영주(Yung Joo Ko),이경진(Kyung Jin Lee),김신(Sin Kim) 한국가스학회 2005 한국가스학회 학술대회논문집 Vol.2005 No.5