• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.578-589
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• 2018

Building Integrated Photovoltaic (BIPV) system is a typical integrated system that simultaneously performs both building function and solar power generation function. To maximize its potential advantage, however, the solar photovoltaic power generation function must be integrated from the early conceptual design stage, and maximum power generation must be designed. To cope with such requirements, preliminary research on BIPV design process based on architectural design model and computer simulation results for improving solar power generation performance have been published. However, the requirements of the BIPV system have not been clearly identified and systematically reflected in the subsequent design. Moreover, no model has verified the power generation design. To solve these problems, we systematically model the requirements of BIPV system and study power generation design based on the system requirements model. Through the study, we consistently use the standard system modeling language, SysML. Specifically, stakeholder requirements were first identified from stakeholders and related BIPV standards. Then, based on the domain model, the design requirements of the BIPV system were derived at the system level, and the functional and physical architectures of the target system were created based on the system requirements. Finally, the power generation performance of the BIPV system was evaluated through a simulated SysML model (Parametric diagram). If the SysML system model developed herein can be reinforced by reflecting the conditions resulting from building design, it will open an opportunity to study and optimize the power generation in the BIPV system in an integrated fashion.

• Aerospace Engineering and Technology
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• v.4 no.2
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• pp.192-198
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• 2005

SI(System Integration) process in KSLV-I development project is integrate whole assemblies which was submitted to system integration supervising team to one complete launch vehicle with proper quality control through test and verification and launch KSLV-I. It is not a one or a few teams' separate job but overall comprehensive job which request all related function group and manufacturing companies' voluntary cooperation. This paper was intended to provide entire SI process outline to whole related function groups and manufacturing companies for better cooperation in SI process and will be revised through continuos discussion among SI supervising group, whole function groups and manufacturing companies.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.658-661
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• 2008

As network security is coming up with significant problem after the major Internet sites were hacked nowadays, IDS(Intrusion Detection System) is considered as a next generation security solution for more trusted network and system security. We propose the new IDS model which can detect intrusion in the expanded distribute environment in host level, drawback of existing IDS, and implement prototype. We used pattern extraction agent so that we extract automatically audit file needed in intrusion detection even in other platforms.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2008.11a
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• pp.434-437
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• 2008

In this study, we developed a fuel moisture variation prediction model on each day after precipitation during a spring forest fire exhibition period. For this research, we selected plots in pine forest on Sam-Chuck si and Dong-hae si in Kangwon do according to a forest density(low, mediate, high) and classified a surface woody fuel by a diameter.(below 0.6cm, $0.6{\sim}3cm$, $3{\sim}6cm$, and above 6cm). A validity of this model was verified by applying a fuel moisture variation after precipitation in this spring. In the result, $R^2$ was $0.76{\sim}0.92$. This model will be a useful for improvement of a forest fire danger rate forcast through a prediction a fule moisture in forest.

• The Journal of the Korea Contents Association
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• v.8 no.12
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• pp.414-423
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• 2008

The purpose of this article is identify the difference of selection attributes on super-deluxe hotel and economy hotel, which business travellers consider important and understand satisfaction with the results of it so as to seek the way for economy hotel to take superior competition differentiated from the super-deluxe hotel and towards world wide competitive level. And also it is to offer necessary basic concept for new investors or experienced investors who construct economy hotel. The results indicated that this article has an implication to offer basic data for the understand of a model of economy hotel and market segmentation for business travellers who want to the service of super-deluxe hotel level but prefer economy hotel which costs relatively inexpensive.

• Journal of Digital Convergence
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• v.11 no.2
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• pp.51-58
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• 2013

There is an increasing discussion about new teaching and learning methods in smart education environment due to the dissemination of smart devices. In this trend, in order to understand the smart education system, this study analyzed the domestic and foreign cases in K-12 smart education based on CTLA (Creation Teaching Learning Assessment) model through access to educational contents, environments, methods, and its curriculums. The teaching and learning methods in smart education are analyzed in foreign cases, domestic cases, and teaching-learning models presenting the positive part of the currently being implemented smart education and the further research for its improvement. Accordingly this study contributes to the specific formulation and successful realization of smart education.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.11 no.1
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• pp.125-134
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• 1991

Since comprehensive examination of flexible pavement is complex, evaluation of its condition has been based on subjective judgements. Especially, qualitative measure of pavement has been based on linguistic expressions which often cause misinterpretation. There has been no such a criterion that can appropiately assess pavement status. Therefore, this study was devised to develop an approach, using fuzzy set concept, for evaluation of current and expected service conditions of flexibel pavement surface course. An example study was conducted to verify its usefulness. Since arithematic operation of fuzzy set can quantify the linguistic values and translate them into illustrative models, the results shown in the example was easy for anyone to understand.

• Journal of Digital Convergence
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• v.10 no.3
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• pp.143-148
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• 2012

QR Code is available in many areas(business cards, coupons, advertising, billing, etc) due to the increase in the smart phones. In particular, the company's image and marketing are also available and using the Internet address, personal and corporate PR and publicity are also available. I was implemented the mobile web platform by the case wine information that easily seen but difficult to understand the information. Using QR Code, consumers can get information easily and quickly. In addition, based on the idea of using mobile web platform, variety of services and benefits will be able to expected.

• Journal of Agricultural Extension & Community Development
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• v.13 no.1
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• pp.227-234
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• 2006

산림관리에 있어 공동체는 중심에서 풀-뿌리단계로 관심을 받아왔다. 베트남에서, 공유림은 오랜 기간 산림에 의존하고 있는 서로 다른 공동체의 존재 그리고 종교와 긴밀히 연결되어 있다. 지난 몇 년 동안, 지속가능한 산림경영의 필요성에 기초하여, 몇몇 지역 공동체는 산림 또는 임지를 마을과 가구를 포함하여 산림에 대해 소유권을 가진 지역공동체에 할당되었다. 게다가 공동체는 또한 산림을 보호, 천연갱신과 신규조림 등 정부기구의 프로그램에 참여하였다. 산림관리에 근거한 지역공동체의 경험은 경제-사회적으로 적합한 산림관리 모델로 이것은 베트남의 서로 다른 민족의 전통관습에 따른다. 그러나 법적인 면에서, 지역공동체는 아직 산림 또는 임지에 연결된 실체로 인식되지 않고 있다. 공동체 산림관리의 두가지 형태는 (i) 그들에게 속한 산림과 임지를 공동체가 직접 관리하는 경우와 (ii) 공동체가 국가기관이 소유한 산림의 보호와 조림에 참여하는 경우이다. 이 논문은 공동체 산림관리에 대한 현재의 상황, 잠재력, 경향 및 이슈를 명확히 하여 정책담당자의 이러한 산림관리에 대한 이해를 돕는 데 있다.

• Journal of KIBIM
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• v.7 no.3
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• pp.11-20
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• 2017

BIM technology, which is widely used in the construction industry, has been introduced in various fields for the purpose of saving construction cost and reducing construction schedule. However, in the case of BIM-based cost estimate, there are various trials and errors in applying BIM technology which can be applied for calculating quantity and cost estimate. BIM-based cost estimate can improve the quantity accuracy and allow to easy modifications that were not expected in 2D-based construction process. However, for this purpose, it is necessary to take into consideration that interoperability between BIM data and cost information should be planed in advance. Besides, the definition of a BIM data specification is also required for the seamless data exchange and integrity in each phase of the construction process. Therefore, in this study, we propose a BIM - based cost estimation method and technology in each type of work applicable to the current domestic construction industry.