• Horticultural Science & Technology
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• v.33 no.6
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• pp.845-853
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• 2015

The objective of this study was to predict the timing of nitrogen (N) demand through analyzing chlorophyll fluorescence (ChlF), soil-plant analysis development (SPAD), and normalized difference vegetation index (NDVI), which are positively correlated with foliar N concentration in star cluster (Pentas lanceolata). The plants were grown in potting soil under optimal conditions for 30 d, followed by weekly irrigation with five concentrations (0, 4, 8, 16, and 24 mM) of N for an additional 30 d. These five N application levels corresponded to leaf N concentrations of 2.62, 3.48, 4.00, 4.23, and 4.69%, respectively. We measured 13 morphological and physiological parameters, as well as the responses of these parameters to various N-fertilizer treatments. The general increases in Dickson's quality index (DQI), above-ground dry weight (DW), total DW, flowering rate, ${\Delta}F/Fm$', and qP in response to treatment with 0 to 8 mM N were similar to those of SPAD, NDVI, and Fv/Fm. Consistent and strong correlations ($R^2$= 0.60 to 0.85) were observed between leaf N concentration (%) and SPAD, NDVI, ${\Delta}F/Fm$', and above-ground DW. Validation of leaf S PAD, NDVI, and ${\Delta}F/Fm$' revealed that these vegetation indices are accurate predictors of leaf N concentration that can be used for non-destructive estimation of the proper timing for N-solution irrigation of P. lanceolata. Moreover, irrigation with 8 mM N-fertilizer i s recommended w hen leaf N concentration, SPAD, NVDI, and ${\Delta}F/Fm$' ratios are reduced from their saturation values of 4.00, 50.68, 0.64, and 0.137%, respectively.

• 한국태양에너지학회:학술대회논문집
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• 2009.11a
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• pp.205-210
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• 2009

Generally, the building's windows and ventilation for the purpose of mining and the vista and windows by emotional engineering design area is a growing trend. According to the flow of energy is lost from the building, will be achieved through the walls and roof and windows. Among these, the window through the loss of about 45% of the entire building is big enough to rate. In addition, the building regulation U-value Limitation of window is $3.3W/m^2$ K in southern regions, while U-value Limitation of wall is $0.35{\sim}0.58W/m^2$ K. It means that the energy loss through windows is six times more than it through wall. Therefore, the purpose of this study is to evaluate the environmental performance of the super window system by verification experiment. The results of this study are as follows; 1)Thermal performance of insulated Super Window measured as $1.44W/m^2$ $^{\circ}C$ 2)Required energy for heating was cut down about 5.3% from 266.99 $MJ/m^2$ yr to 252.85 $MJ/m^2$ yr 3)Super Window's reduction rates increased 4.1% from 31.48% to 35.58% when it is compared to normal windows. 4)Building energy efficiency rating elevated from 2nd rating to 1st rating.

• The KIPS Transactions:PartD
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• v.12D no.7 s.103
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• pp.947-956
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• 2005

Software(S/W) reengineering is one of the effective technologies to produce a business worth and en and the S/W ROI continuously. In spite of, S/W reengineering has been recognized a cost-consumptive works with inefficient productivity. In fact we have used to transform to confusion system with destructive system architecture by extending and updating legacy system in a temporary expedients. Moreover it is impossible to provide the time-market products for coping with rapid changeable system environment and meeting to complicated customer's requirements. Therefore, we need a systematic reengineering methodology to fulfill the changeable environment, as appearance of new IT techniques, various alteration of business information model, and increment of business logic. Legacy systems can be utilized as the core property in business organization through reengineering methodology. In this paper, we target to establish the reengineering process, proposed MaRMI-RE consisting of initial Planning phase, reverse engineering and component transformation phase. To describe the MaRMI-RE, we presented the concrete tasks and techniques and artifacts per individual phase in process, and the case study is showed briefly.

• Fire Science and Engineering
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• v.33 no.4
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• pp.83-88
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• 2019

This study examined the concentration of combustion gases while considering low ventilation and respiration frequency. A one-quarter-size ISO 9705 room corner test was performed. The concentrations of carbon monoxide and oxygen were measured in each case with the continuous inhalation of combustion gas with low ventilation (2, 6, and 10 LPM) and different respiration frequencies (2 s, 5 s, and infinity). The combustion of a gasoline pool fire in the compartment had a theoretical heat release rate of 5.34 kW. The results show that the deviation of the gas concentrations becomes higher as the low ventilation increases compared to the respiration frequency. In addition, as the respiration frequency increases, the variation in the minimum oxygen concentration is larger than the average value, while in the case of carbon monoxide, the variation in the average value is larger than the maximum value. These results show that the inhalation characteristics of refugees should be considered to investigate fires.

• Proceedings of the KIPE Conference
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• 2007.11a
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• pp.63-65
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• 2007

본 논문에서는 변압기를 이용한 단일형 전력회수회로 및 구동 회로를 제안한다. 제안된 회로는 변압기를 이용하여 회수 콘덴서 대체 및 다이오드를 제거하여 전력회수회로를 단순화 한다. 양전원을 이용하여 기존 구동회로의 소거방전시 필요한 주 경로상 직렬 단방향 스위치도 제거된다. 모의 실험을 통해 이용하여 제안된 회로의 타당성을 검토한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.11a
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• pp.369-372
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• 2005

최근 소프트웨어의 수요가 증가함에 따라 수요를 충족시키기 위한 다양한 응용 소프트웨어 개발 방식 중 컴포넌트 기반 소프트웨어 개발(CBSD: Component-Based Software Development) 기술이 빠르게 발전하였고, 이에 실제 개발된 컴포넌트의 합성을 통한 커다란 응용 소프트웨어 개발이 활발히 진행되고 있다. 또한 컴포넌트들이 서로 정확하게 합성되고, 작동할 수 있는 방법으로 소프트웨어 아키텍쳐 기반의 합성 환경에 대한 연구들이 진행되고 많은 방법들이 제안되었다[1]. 이에 본 논문에서는 지금껏 제안된 아키텍쳐 모델들이 갖고 있는 소프트웨어 개발에 있어 전체적인 흐름파악의 어려움과 변경의 파급효과라는 문제점들을 해결 및 최소화 시킬 수 있는 방법으로 제안된 워크플로우라는 개념을 사용한 소프트웨어 아키텍쳐 모델에 대한 추가 연구와 더불어 아키텍쳐의 명세를 XML로 정의하므로, 명세 구문의 수정 및 확장이 용이하도록 하였다.

• Magazine of the Korean Society of Agricultural Engineers
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• v.43 no.4
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• pp.79-88
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• 2001

Agricultural facilities can be designed by conceptual preliminary primary and detailed design stages. because each stage has a different objective, it must be applied to dissimilar design and analysis level. Engineers have to judge from evaluation that is estimated agricultural resources in the conceptual design stage. Methods of computer aided design are achieved to individual functions however it is inefficient to perform entire processes of design and hard to systematically accumulate results o design. Study on the integrated structural design system has been continued. but those system have adopted “closed architecture”which is known to inflexible method for developing applications. In this study the design platform is an environment that can support to integrated design system independently and an design platform is proposed by analyzing design processes using object oriented method. The concepts of software platform have resulted from several practical ideas, OOA/OOP and related some points. This paper aims at developing the software platform of a software environment to support the design phases of the agricultural facilities.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.190-191
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• 2007

본 연구는 소프트웨어 컴포넌트 플랫폼에 독립적으로 컴포넌트를 개발하여 소프트웨어 간에 상호 운용성과 이식성을 확보할 수 있는 컴포넌트 모델변환 기술과 소프트웨어 아키텍쳐를 기반으로 컴포넌트를 조립하여 소프트웨어를 생산할 수 있는 기술을 개발하는 것이다. 본 연구에서는 이러한 기술을 개발하기 위해 세부적으로 영역 전용 아키텍쳐 기술언어를 개발하고 아키텍쳐 기술 언어를 이용하여 개발된 응용 모델을 모델 기반 개발 방법으로 변환할 수 있는 변환 기술과 코드 생성 기술, 그리고 아키텍쳐를 구성하는 컴포넌트를 조립해 낼 수 있는 컴포넌트 조립 기술을 개발하고자 한다. 본 연구를 통하여 개발될 최종 결과물은 영역 아키텍쳐 기반 소프트웨어 개발 시스템 시제품의 개발이다.

• Journal of Satellite, Information and Communications
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• v.9 no.1
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• pp.65-69
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• 2014

The Communication, Ocean and Meteorological Satellite(COMS) data processing system(CMDPS) has developed to support the meteorological observation and weather prediction by NMSC(National Meteorological Satellite Center) and it is generating the 16 kind of meteorological data(Level 2 product). Unfortunately, currently CMDPS has some problems in terms of the system maintenance and the integrated software efficiency, and the extension to support the next generation meteorological satellite data processing. To solve this problems, in this paper, we suggest the extensible component-based system architecture for COMS meteorological data processing with consideration of identified issues. Proposed system is adapted the component-based frameworks with extensible architecture. We expects that this system will be provide easy ways to develop new satellite data processing algorithms and to maintain the system.

• The Journal of Society for e-Business Studies
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• v.12 no.2
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• pp.75-93
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• 2007

Recently, Service-Oriented Architecture(SOA) is on the rise to reduce the complexity of IT infrastructure, minimize cost for maintaining it and maximize the productivity and flexibility in business. SOA increases the adaptability by loosely coupling and it's main feature is that three elements such as service provider, service requester and service registry are connected with each other systematically. These make difficult to adopt traditional development methodologies to implement SOA. In this paper, we suggest a service-oriented development process with regard to the aspect of service provider and service requester. The process consists of six phases and each phase sets up with guidelines and artifacts. It can choose the process type along with the goal in Development Planning.