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상추 생육에 적합한 식물공장의 LED 광환경에 관한 문헌연구
심수빈, 이훈수 忠北大學校 農業科學硏究所 2008 農業科學硏究 Vol.36 No.2
Recently, there have been brisk research on plant production systems in plant factories that can???? control the environment. The development of LEDs as artificial light provides new possibilities in plant factories operation. In this paper, we will analyze the existing research on the design of LED lighting conditions that is efficient for productivity and quality enhancement of lettuce cultivated in plant factories and summarize it for optimal LED lighting conditions. The effect of different kinds of artificial lightings on the reproduction of lettuce in plant factories was investigated and the effect of RGB ratio of LEDs on the growth and quality of lettuce were investigated. LED lighting is a light developed to replace ordinary artificial lighting. It is effective in reducing power and is environmentally friendly. And it is effective as an artificial light source for plant cultivation because it can selectively use red light and blue light which are effective in plant photosynthesis. RGB Ratio of LED affect the growth and development of lettuce and its nutritional quality. The selection of light source should be considered according to the plant variety cultivated in the plant factory and the nutient to be promoted. Blue light has more effect on quality such as vitamin C than red light, but red light rather than blue light on appearance changes such as increase of body weight and leaf shape. The gene expression and nutrient accumulation of lettuce are relatively superior in mixed light than in single light. Considering the various conditions, the ratio of RGB for lettuce cultivation in a fully controlled plant production system is approximately appropriate 5~7 : 0~2 : 1~3. As a result, appropriate light sources shall be selected according to the breed of lettuce, functional material and the plant growth stages.
전기화학 수소 압축기 성능 및 기계적 특성에 대한 셀 디자인 변수의 영향 조사
심규동,이재승,윤수빈,주현철 한국유체기계학회 2024 한국유체기계학회 논문집 Vol.27 No.1
An electrochemical hydrogen compressor (EHC) is considered as promising technology for hydrogen compression. In this study, the influence of cell design variables on performance and mechanical behavior was numerically investigated for efficient and reliable operations of EHC. The distributions of stress and water concentration were examined by coupling computational fluid dynamics (CFD) and finite element method (FEM) methodology. First, the EHC model is validated against the experimental data with different Nafion membranes of N115, N117, and NR212. In general, the gas diffusion layer (GDL) intrusion toward the low-pressure side (anode) is observed induced by cell assembly and pressure gradient between the anode and cathode. While the stress level tends to be decreased with increase of the membrane, GDL thickness. Regarding the cell performance, the dehydration which i s critical i ssue for EHC operation, i s mainly a ffected by ohmic potential due to the proton transport through the membrane. In previous studies, specific causes of the anode dehydration issue and structural problems in the cell due to pressure differences in the electrochemical hydrogen compressor (EHC) were not well elucidated. Through this research, using the computational science approach, we have identified and analyzed these underlying causes and conducted simulations to assess the performance and structural stability of the cell based on various cell design factors required for design optimization and solution. Particularly, the simulations also show that when common GDL materials such as carbon paper, carbon cloth, and carbon felt are employed, breaking of GDL could not be avoided with high hydrogen compression ratio (e.g., 100), which clearly indicates that the structure strength and resistance of GDL should be improved.
브랜드 믹스를 통한 웰빙 라이프 스타일 식음공간 제안 -Workout kitchen 브랜드 개발을 중심으로-
심민주(주저자) ( Min Joo Shim ),설수빈(주저자) ( Soo Bin Seul ),양정은(주저자) ( Jung Eun Yang ),조해인(주저자) ( Hae Inn Joe ),이진민(공동저자) ( Jin Min Rhie ),이미연(공동저자) ( Mi Yeon Lee ),장미정(공동저자) ( Mi Jeong Jang ) 숙명여자대학교 산업디자인연구소 2015 숙명디자인학 연구 Vol.20 No.-
지금까지의 브랜드 믹스 전략에 관한 연구는 여러 가지 브랜드 마케팅 요소들의 믹스 전략이 인지도, 이미지, 충성도 등 소비자 관련 변수에 어떻게 영향을 미치고 또, 브랜드 성과에 어떤 관련성이 있는가에 대하여 소비자 입장에서 접근하는 것이 대부분이었다. 본 연구는 기존 연구들과는 달리 브랜드를 표현하는 디자인을 전략적 요소의 핵심으로 보고, 이를 2차원, 3차원 및 4차원의 공간환경에 구현하여 브랜드 믹스를 성공적으로 이끄는 공간 사례를 제시한다. 브랜드 디자인은 브랜드에 충성도가 높은 고객과 잠재 고객을 공유하기 때문에 그 중요도는 가중되며 브랜드 믹스의 중요성은 가중된다. 본 연구에서는 기존의 두 브랜드의 디자인 및 마케팅 전략을 각각 분석하여 이를 기반으로 하는 새로운 브랜드 아이덴티티를 제시한다. 또한 이 브랜드 아이덴티티를 입체적으로 구현하는 브랜드 공간을 실제 사례를 통해 그래픽 디자인과 제품디자인, 그리고 공간에 구현되는 디자인 요서들을 통해 통합적으로 제시되는 마케팅 전략의 효과를 확인할 수 있다. The studies of brand mix strategy so far are mostly about the consumer-level approaches to what effects the mixed strategies of various brand marketing elements have on the consumer-related variables such as awareness, image, and loyalty, in addition to what kind of relevance the mixed strategies have with the brand performance. Unlike the existing studies, this study is planned to view designs that describe a brand as the core of the strategic elements and suggests the spatial model case that can lead the brand mix to its success by implementing the designs in a two-dimensional, three-dimensional and four-dimensional spatial environments. Because the brand design is to share the highly loyal and potential customers to the brand, its importance as well as the significance of brand mix is weighted. This study analyzes the design and marketing strategies of two existing brands respectively and suggests a new brand identity that is based on the analysis. Also, in this study, it will be possible to identify the effectiveness of marketing strategies that are presented in an manner integrated through actual cases where the brand identity are embedded in stereospecific and through the graphic design, the product design and the design elements to be materialized in the space.