• Journal of the Society of Disaster Information
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• v.16 no.4
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• pp.842-848
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• 2020

Purpose: It is important to operate safely and economically in obsolescent power plant facilities. Economical operation is related in the balance of the supply and demand. Safety operation predicts the possible risks in the facilities and then, takes measures to the facilities. For the monitoring of the power plant facilities, we needs several kinds of the sensing system. From the sensors data, we can predict the possible risk. Method: We installed the acoustic, vibration, electric and smoke sensors in the power plant facilities. Using the data, we developed 3 kinds of prediction models, such as, demand prediction, plant engine abnormal prediction model, and risk prediction model. Results: Accuracy of the demand prediction model is over 90%. The other models make a stable operation of the system. Conclusion: For the sustainable operation of the obsolescent power plant, we developed 3 kinds of AI prediction models. The model apply to JB company's power plant facilities.

• Journal of Korea Port Economic Association
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• v.30 no.3
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• pp.15-37
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• 2014

Sustainability is a broad concept involving economic, social and environmental issues in operational and managerial processes. To assist ports to implant sustainability practices into their operations, this paper conceptualizes the structure of sustainability practice in port operations, based on interviews undertaken at Busan port in early 2013. Results revealed that, as a strategic practice to improve their internal business processes, sustainability practices necessitate the simultaneous pursuit of container traffic growth, low environmental impacts and corporate responsible image making, operational efficiency, efficiency of the use of the port area and sustainable growth. Through thematic analysis, the relevant practices were clustered into four sub-dimensions incorporating environmental technologies, continual monitoring and upgrading, internal process improvement, and cooperation and communication. Further, reporting the relevant issues such as barriers and challenges in carrying out sustainability practices, the findings provide useful insights for strategic agenda to assist ports to incorporate sustainability practices in their operations.

• The Journal of the Convergence on Culture Technology
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• v.10 no.1
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• pp.325-335
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• 2024

In this study, I investigated cases of operating Sustainable Development Goals (SDGs) sustainable design courses based on interdisciplinary education for diverse design major students in the fashion design department. Through literature review, we examined the necessity of this course operation and analyzed the course through class design, execution, and operational results. Sustainable design courses were organized for 2nd to 4th-year students, promoting integrated learning for fashion design and various design majors to enhance interdisciplinary skills based on the in-depth study of SDGs issues. The educational content in the classes focused on the sustainable development goals achieved through upcycling design of waste PET bottle fibers developed by local industries, aiming to pursue sustainable values of designers through problem discovery and resolution. Students developed various upcycled products, evaluated metrics, and assessed satisfaction levels. Through this process, students gained an understanding of the practical value of SDGs, recognized the importance of sustainable development through design approaches for solving local issues, and acknowledged the significance of interdisciplinary education with various design majors.

• Journal of Korea Port Economic Association
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• v.31 no.3
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• pp.61-74
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• 2015

Amid intense port competition in Northeast Asia, international ports require sustainable growth based on competitiveness that incorporates economic, social, and environmental perspectives. Despite the importance of sustainability issues in port competition, prior studies on port competitiveness have focused on ports' own handling capacities. Moreover, sustainability concerns have focused on environmental issues such as environmental impact minimization and environmental index development. The prior literature makes distinctions between studies of port competitiveness and works relating to port sustainability. Therefore, this paper aims to redefine sustainable port competitiveness based on the "triple bottom line," comprising sustainability, analysis of the relevant issues, and practices. The findings offer not only important steps in building knowledge about sustainable port competitiveness, but also provide practical implications for strategic agendas and guidance for future improvements in port operations.

• Journal of the Korean Regional Science Association
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• v.40 no.2
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• pp.39-55
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• 2024

This study attempted to derive a plan for sustainable operate by identifying the status and operation condition of the community facilities of the Youth Jochiwon Project through case studies and interviews. Examining at the status and operation condition, 13 facilities are scheduled to be built in Jochiwon by 2025, but many facilities have not yet been prepared for specific operation plans. Second, the possibility of sustainable operation is positively evaluated based on creating jobs and profits through connection with other facilities and the introduction of paid system. Third, administrative support is being provided in various aspects, but there was a regret due to the limitation of the budget. It is expected that the function of health/welfare and leisure/culture can be strengthened for sustainable operation, support in term of administrative support is needed, and support and management function can be strengthened by utilizing the urban registration support center.

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.425-425
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• 2023

상수도시스템의 지속가능한 운영을 위해서는 에너지를 효율적으로 활용하는 것이 필수적이다. 따라서, 본 연구에서는 상수도시스템에서 고압구간의 압력조절을 통해 에너지 측면의 최적 운영기법을 제안하였다. 제안된 최적 운영기법은 마이크로 터빈을 이용하여 에너지 회수를 통한 압력저하와 이로 인한 누수량 저감을 동시에 고려하였다. 본 연구에서 사용한 최적화기법으로는 Multi-objective harmony search 알고리즘을 사용하였으며, 상수도 시스템에서 마이크로 터빈을 모의하기 위해서 EPANET의 압력조절 밸브 (Pressure reduction valve)를 활용하여 압력강하에 따른 에너지 회수를 고려하였다. 제안된 최적운영 기법을 검증하기 위해 Benchmark networks (e.g., 5-nodes network, 25-nodes network)을 적용하였으며, 본 연구를 통해 마이크로 터빈의 최적 규모와 설치위치, 개수를 결정할 수 있으며, 이에 따른 에너지 회수와 누수감소 측면에서 상수도시스템의 지속가능한 운영에 효과적으로 이용될 수 있을 거라 기대된다.

• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.215-215
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• 2022

현재 국내 정수시설은 정수공정별 감시제어-데이터수집시스템(SCADA: Supervisory Control And Data Acquisition)에 기반하여 감시제어 및 모니터링 위주로 운영·관리를 실시하고 있다. 또한, 주요 핵심 공정인 응집제 약품투입, 소독 및 여과 설비 공정의 운영방식에 있어서 선험적 운영지식에 의한 방식으로 운영되고 있기 때문에 지속적인 안정적 운영을 위해서는 표준적이고 체계적인 운영관리 수단이 필요하다. 국외에서는 다양한 운영 조건에 기반한 정수처리 효율을 예측할 수 있는 모의(simulation) 도구의 개발을 통해 기존 운영되고 있는 정수장의 효율을 예측하는 데 활용하고 있는 실정이다. 본 논문은 실시간 운영관리가 가능한 기반을 구축하여 정수처리의 효율을 예측할 수 있는 시뮬레이터 개발을 통해 정수처리 공정별 기본 및 조합의 공정 시뮬레이션 모의 모듈 기술을 개발하기 위한 연구를 수행하였다. 또한 개발된 기술의 실증 운영을 통해 검증된 모듈을 반영한 정수장 시뮬레이터 시스템을 개발을 위한 연구를 수행하였다. 정수장 시뮬레이터는 수질정보, 물질수지, 수두손실등의 운영현황 데이터를 수집하는 기능, 착수-혼화-응집-침전-여과-소독 등 개별 공정별 주요 운전변수의 모니터링 및 제어를 통한 운영관리 기능, 원수 수질변화에 신속한 대응을 위한 정수처리 공정제어 의사결정지원 기능, 그리고 온라인 관망해석을 포함한 정수처리 전(단위)공정 시뮬레이터 기능 및 공정별 운영인자 최적화 기능 등으로 구성되어 있다. 현재 운영 중인 정수장의 공정별 운전 상태를 평가·관리하여 정수공정 운영 안정화 체계를 확보하고, 정수장의 유량과 수질의 갑작스런 변화에 따른 모의를 통한 수질예측으로 실시간 정수장 최적운영관리가 가능하다. 또한 원수 성상에 따른 적정 공정운영 자동화로 운영비 절감 및 효율적 인력 활용으로 정수장 운영 효율성을 제고함으로써 지속적이고 안정적인 정수장 운영 체계를 확보할 수 있다.

• Journal of Korea Port Economic Association
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• v.32 no.4
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• pp.211-220
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• 2016

In accordance with the environmental changes that surrounds the port, there seems to be a trend of increasing interest in a sustainable development and operation of port. Considering that sustainability assessment utilizing Triple Bottome Line(TBL) has been conducted actively in various fields of research, it is essential to evaluate port sustainability including not only economic aspect but also social as well as environmental ones. In this regard, this study aims to measure the relative importance of port sustainability index using AHP. Moreover, sustainability of Korean four major ports has been tested by adopting the newly developed index in this study. From the results, it can be concluded that in addition to securing high value cargoes, increasing efficiency of port operation and infrastructure together with capital investment are essential. Growth harmonized with surrounding area of port and environment-friendly port operation should not be disregarded.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.133-134
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• 2017

본 연구는 산복도로 르네상스사업의 1~4차 년도 사업지의 거점시설을 사용하는 운영자를 대상으로 한 설문조사자료와 분석의 틀을 통해 주민역량강화사업의 개선방안을 제시하는 것을 목적으로 한다. 분석 결과, 주민역량강화사업에도 불구하고 거점시설들의 운영은 원활하지 못한 것으로 판단된다. 앞으로 남은 기간 사업들의 실효적인 운영을 위해서는 주민역량강화를 위한 프로그램이 사업기간 전반에 걸쳐 지속적으로 배분하여야 한다.

• Journal of Korean Library and Information Science Society
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• v.47 no.4
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• pp.443-464
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• 2016

A great number of institutions around the world have been building digital repositories to communicate scholarly information. Meanwhile, digital repositories have been struggling with how to preserve increased volume of digital contents for the long term and how to build a sustainable information environment. The HathiTrust partnership was established to meet the need of a sustainable collaborative model of digital repositories in research libraries, mainly in North America, and has been expanded globally by signing with other libraries around the world. This paper is dealt with the establishment, operation and policy, construction status, and user service of the HathiTrust. The results presented in this paper include the benefits and potential opportunities of the HathiTrust as a participating member. Partnership in HathiTrust would allow each member institution to provide more cost-effective operations, shared management and long-term preservation of digital content, ease of copyright management, and increased accessibility. In the future it is expected to provide a shared storage of printed materials and to facilitate a big data research center.