• 한국실내디자인학회논문집
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• 제22권3호
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• pp.205-216
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• 2013

Korean cities need sustainable urban regeneration based on the effective application of space and resource. Especially a sustainable urban regeneration needs the activation of community in the urban underground space as urban development center. The purpose of this study is to propose elements and factors of spatial planning of community in urban underground space for sustainable urban regeneration and to propose the characteristics of spatial planning of community in urban underground space according to strategies of sustainable urban regeneration. The research methods of this study used to conduct research include precedent study reviews and survey. The conclusions of this study are as following; The application of various factors related to spatial planning aspect of communication, supportive cultural facilities, accessibility and nature is needed for creating a sustainable urban regeneration. Especially, in urban underground space, the application of spatial planning for community activation considered strategies of sustainable urban regeneration should be necessary. And introduction of cultural facilities, multi-dimensional pedestrian network for accessibility and natural elements for activating community in urban underground space are needed for making sustainable urban regeneration.

• International journal of advanced smart convergence
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• 제7권1호
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• pp.1-6
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• 2018

In addition to the instability of energy import costs caused by the depletion of petroleum resources, which is a representative energy resource, and the strengthening of various regulations such as the convention on climate change, the plant for bio energy production, which is being watched as the next generation energy, and became subject of various complaints. In order to solve this problem, the bio-plant is underground and the ground is parked, making the convenience and accessibility of citizens more and more accessible. In this situation, the development of bioenergy production technology also increases the risk factor in bioenergy production process. Accordingly this paper explains method about apply the wide angle camera based AOA algorithm to the bio plant to prevent the accidents from spreading due to the lack of facilities and safety devices and the aging of the facilities and suggests a technique that can quickly identify the location and direction when it occurs.

• 한국전자통신학회논문지
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• 제16권4호
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• pp.735-742
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• 2021

최근 정부에서 역점 적으로 추진하고 있는 '재생에너지 3020', '그린뉴딜', '2050 탄소중립', 'K-RE100' 정책에 의해 재생에너지 관련 발전설비들이 급증하고 있다. 재생에너지 설비들은 대부분 소규모이고, 분산되어 있어서 효율적인 관리가 어렵고, 1MW 미만의 소규모 분산자원은 판매량 제한, 거래회피 등으로 시장참여에 큰 어려움을 겪고 있다. 특히, 재생에너지의 간헐성 때문에 전력망의 안정성 저하에도 큰 영향을 끼치고 있다. 정부에서는 '소규모 분산자원 중개거래'를 통해서 변동성 및 간헐성 문제를 해결하고, 이종의 대량 소규모 분산자원들의 계통 자원화와 수용성 확대를 추구하고 있다. 본 연구에서는 AI에 기반한 발전량 예측 모델을 분산자원 중개거래 시스템에 적용하여 최적의 운영 솔루션을 제시하고, 에너지신사업 시장 개척의 기반 플랫폼으로 활용될 수 있도록 하고자 한다.

• 한국건설관리학회논문집
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• 제16권6호
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• pp.41-52
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• 2015

군 시설물은 80년대 이후 현대화 계획 및 군 복지의 향상 등으로 인해 그 수가 급격하게 증가하였다. 그러나 이렇게 증가한 시설물에 대해 체계적인 유지관리가 이루어지지 못하여 노후화되면서 이러한 노후시설의 성능향상이 필요하게 되었다. 노후 시설물의 성능향상 방안은 재건축과 리모델링으로 나눌 수 있다.그러나 표준 리모델링 범위 내에서는 리모델링이 더 경제적이라는 연구결과에도 불구하고 군 시설의 리모델링은 성능 향상의 수단으로써 재건축과 동등하게 고려되고 있지 않다. 따라서 본 연구에서는 건축물의 생애주기 동안의 성능 변화와 리모델링 필요 범위의 관계성에 착안하여 재건축보다 리모델링이 경제적인 특정시점(SPT)에 리모델링을 선택하는 방식의 리모델링 프로세스 모델(RPM)을 제안한다. 또한 군 시설물의 자료에 근거하여 이를 위해 필요한 현실성 있는 내용연수와 기능성 평가기준을 함께 제시한다. 이 RPM을 통해 기존프로세스에서 발생하는 안전성에는 문제가 없으나 기능성에 문제가 있는 시설물들이 적절한 리모델링 시기를 놓쳐 어쩔 수 없이 재건축을 하게 되는 사례를 방지할 수 있게 하였다. 또한 준공시기와 유형이 다른 시설물을 관리하는 입장에서의 재건축/리모델링 선택의 의사결정을 보다 간단하게 할 수 있는 가능성을 제시하였다. 이러한 리모델링에 보다 초점을 맞춘 프로세스를 통해 예산절감 효과뿐만 아니라 재건축으로 인한 사회적 낭비를 줄이는데 기여할 수 있을 것이라 판단된다.

• 지역연구
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• 제34권1호
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• pp.19-30
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• 2018

사회간접자본은 한 사회가 발전하고 정상적으로 작동하는 데 필수적 요소이다. 이러한 중요성에도 불구하고 사회간접자본을 얼마나 투자해야 하는가에 대한 기준은 명확하지 않으며, 투자의 한 축을 담당하고 있는 지방정부의 사회간접자본 투자에 대한 논의는 거의 이루어지지 않았다. 지방정부의 권한이 충분히 보장되면, 지방정부는 주민이 원하는 지방공공재에 대한 투자를 늘린다. 그러한 주민 선호의 반영은 자원배분의 효율성을 가져온다는 것이 분권화 정리의 핵심 개념이다. 본 연구에서는 지방재정을 통해 지방정부의 권한과 자율성을 측정하고 지방정부의 사회간접자본 투자에서도 분권화 정리에 따른 의사결정이 이루어지는가를 살펴본다. 지방정부가 투자에 영향을 줄 수 있는 사회간접자본 시설(도로, 상하수도, 수리치수 시설) 투자에 대한 재원별 탄력성을 추정한 결과 특별 광역시와 그에 속한 기초지자체의 의사결정과 도와 도에 속한 기초지자체의 의사결정은 서로 달랐다. 이러한 차이는 1인당 지방세가 투자에 미치는 영향에서 가장 명확하게 나타났다. 이러한 결과는 지방정부가 주어진 상황에 따라 사회간접자본 투자를 달리하며 투자 결정에 있어 주민 선호를 반영한다는 것을 보여준다. 이것은 사회간접자본 투자에 대한 지방정부의 역할이 커질 때, 자원배분의 효율성이 증가할 수 있음을 보여준다. 그리고 지방정부의 역할 증대는 중앙정부의 재정지원 보다 지방정부의 세입 세출 자율성을 동시에 보장하는 방식이어야 한다는 것을 의미한다.

• 한국주거학회논문집
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• 제26권6호
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• pp.207-216
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• 2015

The purpose of this study is to suggest useful resources concerning the plan to prepare for population aging in the future through investigating architectural characters of the 'Kyungrodang' and its operating systems located near the apartment complex and needs of the 'Kyungrodang'. For this purpose, the study includes field research, interviews, a questionnaire, and a survey targeting each of two apartments located in the Seoul and Gyeonggi-do. A survey targeting the elderly in their late 70 to 80 years 60 to 70 years was conducted and the differences regarding program needs of leisure activities for the elderly and revitalization of 'Kyungrodang' were analyzed. The results of the present study provide suggestions for improvement and solutions to the existing problems of standardized 'Kyungrodang'. Furthermore, the present results can be a basic resource for the elaboration of an appropriate management method and a spatial plan that would respond to the increased needs of facilities and programs for the elderly in the apartment complex. Finally, the results of the present study are expected to make a meaningful contribution to making 'Kyungrodang' the space where the elderly can obtain physical and mental support, as well as enjoy social activities, improve their health, and manage their everyday life.

• 한국태양에너지학회 논문집
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• 제31권5호
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• pp.105-112
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• 2011

The purpose of this study was to analyze and compare the management group' and the teaching group' perception of energy education in Korea. For this purpose, this study carried out a questionnaire survey at schools participating in the energy saving policy. The data was collected from six managers and 171 teachers in middle schools. First, the results indicated that both the management group and teachers have a considerable interest in teaching energy saving practice. How ever the management group showed more preference toward teacher-leading courses, such as lecture, compared to the teachers Second, both the management group and teachers tended to take extracurricular activities. Third, the manager group mostly got energy educational resource from the teacher training program, textbook and teacher's companion. However the teachers mostly did from the mass media. Fourth, compared to the teachers, the managers preferred to allot more budgets to school facilities than to activities related to educating students related to energy. Fifth, the management group pointed out curriculum-making and more budget as the necessity to enhance energy education but the teaching groups did students' interest. Sixth, both the management group and teachers emphasis on the need of energy education.

• 대한조선학회논문집
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• 제46권3호
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• pp.362-371
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• 2009

Shipbuilding is a typical 'build to order' industry. It has a business model that generates revenues from building various ships and offshore products in accordance with owner's requirements at each production stage. Under uncertainty in shipping market, it is very essential for the shipbuilder to prepare the fast and competitive decision for product portfolio strategy in order to maximize contribution margin by exploiting production facilities and constraints. In this study, we introduce the unique decision supporting methodology for the optimal product portfolio sets based on Theory of Constraints(TOC). This methodology is established by adopting the concept of Drum Buffer Rope(DBR) in constraints planning and Throughput Accounting (TA) in management accounting of TOC. In addition, Decision Supporting System(DSS) is implemented. This DSS system provides a throughput estimator with reflecting the cost structure of shipbuilding industry and a resource simulator built on heuristic algorithms to operate major constraint-resources in shipyard such as dock, quay and pre-erection area etc. Several examples are presented to show that the proposed methodology and system can effectively support the strategic decision-making process of a global shipbuilding company.

• Nuclear Engineering and Technology
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• 제51권2호
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• pp.626-630
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• 2019

After several significant nuclear accidents, public attitudes toward nuclear energy technologies and facilities are considered to be one of the essential factors in the national energy and electricity policy-making process of several nations that employ nuclear energy as their key energy resource. However, it is difficult to explore and capture such an attitude, because the majority of prior studies analyzed public attitudes with a limited number of respondents and fragmentary opinion polls. In order to supplement this point, this study suggests a big data analyzing method with K-LIWC (Korean-Linguistic Inquiry and Word Count), sentiment and query analysis methods, and investigates public attitudes, positive and negative emotional statements about nuclear energy with the collected data sets of well-known social media and network services in Korea over time. Results show that several events and accidents related to nuclear energy have consistent or temporary effects on the attitude and ratios of the statements, depending on the kind of events and accidents. The presented methodology and the use of big data in relation to the energy industry is suggested as it can be helpful in addressing and exploring public attitudes. Based on the results, implications, limitations, and future research areas are presented.

• 전기학회논문지
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• 제58권8호
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• pp.1504-1511
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• 2009

By development of renewable energies and high-efficient facilities and deregulated electricity market, the operation cost of distributed generation(DG) becomes more competitive. The amount of distributed resource is considerably increasing in the distribution network consequently. Also, international environmental regulations of the leaking carbon become effective to keep pace with the global efforts for low-carbon paradigm. It contributes to spread out the business of DG. Therefore, the operator of DG is able to supply electric power to customers who are connected directly to DG as well as loads that are connected to entire network. In this situation, community energy system(CES) having DGs is recently a new participant in the energy market. DG's purchase price from the market is different from the DG's sales price to the market due to the transmission service charges and etc. Therefore, CES who owns DGs has to control the produced electric power per hourly period in order to maximize the profit. If there is no regulation for carbon emission(CE), the generators which get higher production than generation cost will hold a prominent position in a competitive price. However, considering the international environment regulation, CE newly will be an important element to decide the marginal cost of generators as well as the classified fuel unit cost and unit's efficiency. This paper will introduce the optimal operation of CES's DG connected to the distribution network considering CE. The purpose of optimization is to maximize the profit of CES and Particle Swarm Optimization (PSO) will be used to solve this problem. The optimal operation of DG represented in this paper is to be resource to CES and system operator for determining the decision making criteria.