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MDA기반 컴포넌트 설계정보 관리도구의 개발에 관한 연구
안용수 ( Yong-soo Ahn ),황상원 ( Sang-won Hwang ),남영광 ( Young-kwang Nam ),이병윤 ( Byeong-yun Lee ),권오천 ( Oh-cheon Kwon ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.1
MDA(Model Driven Architecture)는 추상적인 모델 계층을 사용하기 때문에 다양한 플랫폼에 적용가능하고, 각 모델 계층과 코드 생성의 자동화를 통해 개발의 효율성을 극대화한다. 본 연구에서는 XML 형태로 저장된 설계정보를 분석하여 MDA 기반 컴포넌트 설계 정보를 관리하는 도구를 개발하였다. 이 도구는 UML로 작성된 설계모델를 XMI(XML Metadata Interchage) 형태로 저장하여 각종 설계도구에서 Java, C++과 같은 언어에 대한 실제 프로그램 골격코드가 자동으로 생성되도록 하였다. 역으로 골격코드를 기반으로 구현된 콤포넌트의 원시코드를 수집하여 다시 컴포넌트 설계모델 정보를 추출하는 기능을 구현하였고, 이를 다시 시각적 정보로 재구성 하였다. 이러한 기능들은 기존의 단방향적 개발 구조 방식에서 벗어나 이미 개발되거나 개발 중인 프로그램에 대한 분석 및 평가 등을 통해서 재사용성을 높여주는 순환적인 개발 구조 방식을 제공한다.
수확 후 고농도 CO₂ 단기처리가 ‘매향’ 딸기의 저장에 미치는 영향
안선은(Sun-Eun Ahn),왕무화(Mao-Hua Wang),이아연(Ah-Youn Lee),황용수(Yong-Soo Hwang) 충남대학교 농업과학연구소 2014 농업과학연구 Vol.41 No.1
This experiment was conducted to examine the effects of a short-term treatment of high pressure CO₂ on shelf-life of strawberry fruit. A short-term treatment (12 hr) of 100% CO₂ resulted in the increase of fruit firmness up to 71.9% compared to that at harvest. The firmness of CO₂ treated fruit remained a significantly higher than that of control (air) up to 15 days. The alteration of pectic polymers was observed by CO₂ treatment such as an increase of EDTA soluble pectins and decrease of water soluble ones. The CO₂ treatment resulted in the increase of total amount of wall bound calcium. Pectate lyase activity, an important agent of strawberry fruit softening, was also significantly reduced by CO₂ treatment. Contents of soluble solids and acids of CO₂ treated fruit were higher than those of control fruit. Short-term treatment of high pressure CO₂ affected shelf-life through firmness increase whereas the visual quality and decay incidence of strawberry fruit were not affected.
수확 전후 칼슘-키토산 및 고농도 CO₂ 단기처리에 의한 ‘설향’ 딸기 과실의 저장성 증진
안선은(Sun-Eun Ahn),이아연(Ah-Youn Lee),왕무화(Mao-Hua Wang),황용수(Yong-Soo Hwang) 한국원예학회 2014 원예과학기술지 Vol.32 No.5
This experiment examined the effects of preharvest Ca-chitosan spraying and short-term post-harvest treatment with high pCO₂ on the shelf-life of ‘Seolhyang’ strawberry fruit. Fruit firmness decreased when harvested late in the season and was little affected by Ca-chitosan spray treatments. Short-term treatment with high pCO₂ after harvest, however, significantly increased fruit firmness regardless of preharvest treatment. The combined treatment of Ca-chitosan spray and high pCO₂ led to an additional increase in shelf-life through delay of skin disorder, fruit decay incidence and firmness loss during simulated marketing. The residual effects of both treatments, however, were reduced when fruit were harvested late in the season. Fruit firmness was more affected by high pCO₂ treatment whereas decay and visual quality were affected by preharvest spraying with Ca-chitosan. Although more research is required to determine the optimum concentration of calcium and chitosan, and the optimal spray interval, our results show that the combined treatment of preharvest Ca-chitosan spray and postharvest high pCO₂ is effective in improving strawberry fruit shelf-life by increasing firmness and delaying decay.
수확 후 고농도 CO<sub>2</sub> 단기처리가 '매향' 딸기의 저장에 미치는 영향
안선은,왕무화,이아연,황용수,Ahn, Sun-Eun,Wang, Mao-Hua,Lee, Ah-Youn,Hwang, Yong-Soo 충남대학교 농업과학연구소 2014 농업과학연구 Vol.41 No.1
This experiment was conducted to examine the effects of a short-term treatment of high pressure $CO_2$ on shelf-life of strawberry fruit. A short-term treatment (12 hr) of 100% $CO_2$ resulted in the increase of fruit firmness up to 71.9% compared to that at harvest. The firmness of $CO_2$ treated fruit remained a significantly higher than that of control (air) up to 15 days. The alteration of pectic polymers was observed by $CO_2$ treatment such as an increase of EDTA soluble pectins and decrease of water soluble ones. The $CO_2$ treatment resulted in the increase of total amount of wall bound calcium. Pectate lyase activity, an important agent of strawberry fruit softening, was also significantly reduced by $CO_2$ treatment. Contents of soluble solids and acids of $CO_2$ treated fruit were higher than those of control fruit. Short-term treatment of high pressure $CO_2$ affected shelf-life through firmness increase whereas the visual quality and decay incidence of strawberry fruit were not affected.