• The Bulletin of The Korean Astronomical Society
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• v.46 no.1
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• pp.40.3-41
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• 2021

사람들의 우주에 대한 관심이 커지면서 전국 각지에 천문 관측 시설을 갖춘 기관의 수가 점점 늘어나고 있다. 하지만 대부분의 천문 교육은 밤하늘의 천체를 육안으로 관측하는 데에 초점을 맞추고 있어 최신 천문우주 분야의 내용을 공유하는 데에 한계가 있다. 과학동아천문대는 서울의 용산전자상가에 위치한 사설 천문대로서 2013년에 개관한 이래로 도심 속에서 밤하늘을 만날 수 있는 공간으로서 역할을 하고 있다. 우리는 그동안 쌓은 커뮤니티와 자사의 네트워크를 기반으로 천문대가 현재와 같이 단순히 별을 보는 장소에 그치지 않고 천문우주문화를 확산하는 플랫폼이 되도록 변화 시키려고 한다. 이를 통하여 천문우주에 관심 있는 사람들은 더 쉽게 최신 소식을 접하고, 연구자들은 자신의 연구를 수시로 알릴 수 있는 소통의 장을 마련하려고 한다. 이번 발표를 통해 동아사이언스 미래세대 C 플랫폼 본부와 함께하는 과학동아천문대의 새로운 비전을 외부에 처음으로 소개하며 관계자들의 관심과 참여를 요청드린다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.4D
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• pp.459-467
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• 2008

Because of the insufficiency of ground space, the utilization of underground is getting more and more in these days. Moreover, underground space is being used not only buildings but multipurpose space for movement, storage and shopping. However, ground space has vital weakness for fire compared to ground space. Especially in case of underground shopping center, there are various stuffs to burn and poisonous gas can be exposed on this count when the space is burned. A large number of casualties can be also occurred from conflagration as underground space has closed structures that prevent rapid evacuation and access. Therefore, this research proposes the guidance methodology for evacuation from conflagration in large-sized underground facilities. In addition, suggested methodology uses high technology wireless sensor information from up-to-date ubiquitous sensor networks. Fire information collected by sensors is integrated with existing underground facilities information and this is sent to guidance systems by inducing process. In the end, this information is used for minimum time paths finding algorithm considering the passageway capacity and distance. Also, usefulness and inadequacies of proposed methodology is verified by a case study.

• Journal of the Economic Geographical Society of Korea
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• v.14 no.4
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• pp.642-656
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• 2011

As a part of the Saemangeum development, the Gunsan Bi-eung port is underway to be developed for a tourism complex. Since the perception and preferences of the residents are one of the most important steps for the project, those were surveyed and analyzed to generate a proposed vitalization plan. Based on the survey, most of residents had negative opinions on the current development and condition as well as the effectiveness of the development in the future. Residents also pointed out that leisure facilities and higher level of accommodation were necessary, and desired a coastal deck in the Bi-eung beach. Therefore, for vitalization of Bi-eung port area, construction of a comprehensive resort with sports and leisure facility is suggested to attract visitors. Also, efforts from residents and administrative supports are required in marketing, advertizement, and sound business environment.

• Journal of the Korean Society for Railway
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• v.19 no.3
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• pp.380-387
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• 2016

Considering that the Seoul subway sector is expected to see extension of lines, addition of stations, and changes of operating companies, a review is needed to identify ways to eliminate or minimize financial deficits in its operation. As for deficits from the operation, additional businesses for extra income have been suggested as alternatives, but inasmuch as Western urban development (that of the subway containment area) may not be applicable to Korean settings, a practical alternative is to maximize income by efficient use of rental facilities that are located inside station properties. This alternative requires the estimation of appropriate facility size and rent for each station; few, however, have addressed this topic. At this juncture, this study aimed to draw an equation for estimating the sizes and rents of station properties by reflecting characteristics of lines and locations; a case study was performed for Subway Lines 5 and 6. Analytical findings are that rental facility sizes and rental incomes are affected mainly by the subway ridership and transport revenues, whereas the influence of ground-level commercial activity is relatively weak. A particularly great influence was found to be the value of apartment housing in areas through which the subway lines run. Stations on Line 5, which runs through areas of high-value housing, were assigned smaller facility sizes and higher rents than those on Line 6, which covers areas with relatively low housing value. The equation suggested in this study would make possible more practical feasibility studies when the need arises to estimate sales of new or extended facilities affiliated with stations.

• Journal of Environmental Health Sciences
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• v.42 no.5
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• pp.345-351
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• 2016

Objectives: The objective of this study was to conduct risk assessment using indoor radon concentration and exposure times. Methods: The target facilities were military facilities before and after the application of radon reduction processes and underground commercial facilities in major subway stations in Seoul. Indoor radon concentrations were measured by passive sampler. Results: Radon concentrations in 13 military facilities were initially higher than the guidelines, but the levels were below guidelines after the application of radon reduction processes. Underground shopping mall radon concentrations near subway stations in Seoul satisfied the guidelines. However, indoor radon effective doses after radon reduction processes in some military facilities and those in underground shopping malls belonged to International Commission on Radiological Protection (ICRP) groups needing control management. Conclusion: Indoor radon management requires risk assessment data that takes into account working time (or residence time) in addition to management according to concentration guidelines.

• Journal of Global Scholars of Marketing Science
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• v.7
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• pp.25-53
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• 2001

Two of most important industries in Changwon, the distribution industry and the construction industry have been threatened by the recent economic downturn. Rehabilitating plans for traditional markets tend to focus on renovation of facilities rather than on the managerial solution. Traditional market plays vital roles as a social safety net and a source of development of regional economy. Modernization of facilities and differentiation of business areas are two most important issues for the revitalization of the traditional market. Traditional markets should adopt a strategy which can make a difference in characteristics of the market, regional culture, regional industry and consumer behavior of the region. Purposes of this study are: first, to understand characteristics of traditional markets in Changwon, second, to draw implications for administrative and financial supports for traditional markets in Changwon.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.3
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• pp.633-642
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• 2018

Solar power plants are rapidly spreading, and various design, development, construction and maintenance related technologies and corporations coexist. In addition to private real estate development, they are also profitable in various forms such as building facilities, land, And continues to operate. In this paper, however, we have reviewed and studied the economic feasibility of photovoltaic power generation system based on the investment of off - the - shelter and mall investment, which is a generalized form of real estate asset management.

• Journal of the Korean Institute of Intelligent Systems
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• v.17 no.3
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• pp.310-315
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• 2007

When a mail was given to users, each user's response could be different according to his or her preference. This paper presents a solution for this situation by constructing a u!;or preferred ontology for anti-spam systems. To define an ontology for describing user behaviors, we applied associative classification mining to study preference information of users and their responses to emails. Generated classification rules can be represented in a formal ontology language. A user preferred ontology can explain why mail is decided to be spam or non-spam in a meaningful way. We also suggest a nor rule optimization procedure inspired from logic synthesis to improve comprehensibility and exclude redundant rules.

• Proceedings of the Korean Geotechical Society Conference
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• 2008.10a
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• pp.1585-1592
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• 2008

산업사회의 발전에 따라 사회 기반시설분야도 복잡다양해지고 특히 도시기능이 활발해지면서 지금의 도심지에는 지하철, 상수도, 하수도, 전력구, 통신구, 지하보차도, 지하상가, 지하주차장 등 여러 가지 용도의 지하공간이 요구되고 있으며, 이러한 지하 구조물을 축조하는데 있어 도로상에 차량 증가로 인한 교통 혼잡이나, 지하매설물의 장애로 인하여 기존의 개착식 공법으로 시행하지 못하고 지하터널공사로 시행하는 경우가 빈번하다. 기존 국내 외 터널공법 관련문헌과 현재 사용되는 터널공법의 실제 시공에 관한 정보를 수집하여 장 단점, 시공시 주의사항, 적용조건등의 조사내용을 바탕으로 RPS 공법을 고안하였다. 소규모 지하구조물을 구축하기 위한 RPS 공법은 출발갱내에서 상부에 파이프 루프를 시공한 후 광폭 유압 패널이 장착된 철제 선도관을 추진시켜 선도관을 원압잭에 의하여 압입한 후 P.C. 콘크리트 구조물을 거치하고 원압으로 압입 추진토록 하였다. 또한, 대규모 지하구조물 축조시에는 구조물 예정상단부에 지반조건에 따라 파이프 루프공법 또는 소구경 Semi-Shield 공법을 이용하여 루프를 시공함으로써 상부의 침하를 방지하고, 측벽은 광폭유압 패널을 이용하여 여굴의 최소화 및 곡선부 시공을 용이하게 하였다.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.47-47
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• 2017

급격한 산업화와 도시화는 인구, 산업시설, 교통 등의 증가를 가져왔고, 점차 부족해지는 지상공간의 효율적 활용을 위해 건물이 고도화되고 건물의 공간 배치 계획이 수립되었다. 그럼에도 불구하고 확장하는 도시화에 따른 지상공간의 부족은 공간이용의 고도화를 위해 지하도로, 지하상가, 지하철, 지하공동구, 변전소와 같은 다양한 형태의 지하공간 개발로 이어져 도시는 지상공간과 지하공간이 혼재하는 매우 복잡한 구조를 가지게 되었다. 최근 기후변화와 국지성 집중호우로 인해 도시 배수시스템의 설계용량을 초과하는 유효강우량의 발생빈도가 증가하고 있고, 이것은 지상의 침수뿐만 아니라 지하공간에서의 침수로 이어지고 있다. 하지만, 도시홍수 모델링 연구는 주로 지상에서의 홍수류가 지하공간으로 유입되는 것을 고려하지 않거나, 지상과 지하공간의 침수를 독립적으로 구분하거나, 두 공간의 연계를 고려하더라도 지상과 지하공간의 침수 해석을 모두 수행하는 방향으로 이루어져 왔다. 본 연구에서는 도시침수해석에서 지상과 지하공간을 간단한 연계를 위한 2가지 방법 (경계조건형과 폰드형)을 제안하고, 지하공간이 도시침수해석에 미치는 영향을 분석하였다. 제안한 방법을 2010년 9월 21일 발생한 집중호우로 인하여 큰 침수피해가 발생한 효자배수분구의 광화문 일대에 적용하기 위해, 1차원 SWMM으로 계산된 맨홀의 월류량으로 2차원 도시침수모형에 경계조건으로 이용하였으며, 지하공간을 고려하지 않은 경우와 고려한 경우(경계형, 폰드형)에 대한 해석을 수행하고 실측된 홍수범람범위와 침수심을 실측치와 비교하여 계산의 정확성과 효율성을 분석하였다.