• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.14 no.4
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• pp.257-268
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• 2021

As the variety and scale of facilities increase due to industrialization and urbanization, blind spots for facility safety management have occurred, resulting in numerous casualties.To meet safety and security needs of citizens living in smart cities, we present a procedure for establishing an integrated platform for facility safety management by combining 5G and digital twin technologies. It can be used to perform inspection according to risk factors and aging of facilities. In this paper, the current status of facility management and application directions of new 5G digital twin-based smart city technologies are reviewed and digital twin implementation procedures are presented. Five cities were selected as target areas: Osan, Gwangmyeong, Guri, Uijeongbu, and Anyang. Old and emergency facilities of each local government were selected. A total of 33 digital twin facilities reflecting policy directions of each city were selected. Focusing on facilities determined by each city, the purpose of this study was to define information technology infrastructure elements for the application of the 5G digital twin facility safety management integrated platform, define categories of implementation services, and suggest a concrete integrated platform configuration plan.

• 한국정보통신설비학회:학술대회논문집
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• 2007.08a
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• pp.169-172
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• 2007

The word of U-City means next generation information city. U-City mixes both high technology information infrastructure and ubiquitous information in city to improve easy life in city, quality of life, personal security in city life, and well-fare service and to make business in new area. To provide information and joy of life to citizen in U-city, we will design U-Booth among IT infrastructure solutions. In this article, we will study designing city-type U-Booth and summarize designing point of U-Booth in terms of the specific place. At last, we want to say about the role of U-Booth in U-city. In this article, we want to study designing point of U-Booth and important parts in terms of the specific place of U-Booth.

• Journal of Environmental Impact Assessment
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• v.19 no.1
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• pp.29-38
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• 2010

At recent the number of livestock is increased and the size of farm has changed to large facilities in Korea. So the livestock facilities have become one of major sources of odor emission. The purpose of this study is to analyze the concentration and assessment of odor unit from livestock facilities for cow, dairy, swine and poultry. The eleven odor pollutants such as $H_2S$, ($CH_3$)SH, $(CH_3)_2S$, $(CH_3)_2S_2$, $CH_3N$, $NH_3$, $(CH_3)_2N$, $(CH_3)_3N$, butyric acid, valeric acid and isovaleric acid, measured for assessment of the odor concentrations from livestock facility. As the results, it is found that the major matters of odor from livestock facilities were $NH_3$ and $H_2S$. The highest concentration of $NH_3$ is measured as 15 ppm at henhouse and $H_2S$ is measured as 858 ppb at penpig facilities. In the comparison of the average odor unit from livestocks, it is found that the highest odor unit was from swine and the lowest odor unit was from cow facility. So odor unit from swine facilities was 12 to 30 times higher than the odor unit from cow facilities.

• Journal of the Korean Institute of Educational Facilities
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• v.1 no.1
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• pp.49-61
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• 1994

This study aims to indicate fundamental problems and also to supply basic data for the reasonable distribution of the educational facilities in an effort to build better educational environments by examining and analyzing their changing process in primary and secondary schools in accordance with the changes in school year system in the period between 1900 to 1993. The following conclusion can be drawn : a. Separation of Middle and high schools due to the change of the school year system in 1951 into 6 - 3 - 3 - 4, has had great influence upon the arrangement of the educational facilities. b. Educational facilities in primary and secondary school are expanding, but they do not meet the criterion on an appropriate scale. Especially educational facilities of high schools need to be extended.

• Industrial Engineering and Management Systems
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• v.11 no.2
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• pp.170-175
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• 2012

In this paper, a procedure using a genetic algorithm (GA) and a heuristic local search (HLS) is proposed for solving facility rearrangement problem (FRP). FRP is a decision problem for stopping/running of facilities and integration of stopped facilities to running facilities to maximize the production capacity of running facilities under the cost constraint. FRP is formulated as an integer programming model for maximizing the total production capacity under the constraint of the total facility operating cost. In the cases of 90 percent of cost constraint and more than 20 facilities, the previous solving method was not effective. To find effective alternatives, this solving procedure using a GA and a HLS is developed. Stopping/running of facilities are searched by GA. The shifting the production operation of stopped facilities into running facilities is searched by HLS, and this local search is executed for one individual in this GA procedure. The effectiveness of the proposed procedure using a GA and HLS is demonstrated by numerical experiment.

• Journal of Environmental Impact Assessment
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• v.8 no.3
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• pp.35-47
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• 1999

The purpose of this study is to research the environmental amenity factors of a city to devise the strategies to preserve the factors. For this study, the area of Masan city in Korea was chosen, and questionnaires, field studies, and statistical researches were used. Based on the results, the research showed the city surveyed had expanded by 1,069%, and the population of the city had increased by 272% from 1970 to 1995. In the city-life environment, the traffic was not smooth and the streets were not safe. The number of cars increased by 40,797% from 1970 to 1995, but the total length of roads increased only by 333%. The number of traffic accidents increased by 850%. Buildings were not preserved or maintained and did not have any traditional value. Additionally, buildings were not harmonious with environmental surroundings. Land allocation for utilization was not mixed well with tradition. In relation with the surroundings, there were not enough spaces for old people, and parking spaces were limited. In the field of public policy and finance, economic support and fundamental facilities were not enough. The survey of the household environment and the neighborhood environment showed that the room temperature, sunshine, air condition, and space were medial in the household environment. Public social facilities and entertainment culture had the lowest quality in the neighborhood environment. The city-life environment, the neighborhood environment, and the household environment affected the quality of life in order. The above results showed that cities should be planned upon sustainable development with the idea of emphasizing ecological harmony and considering people first, that citizen should be planned upon sustainable life by the harmony between people and the environment. Cities should be places where all people can live together pleasantly and cooperate with each other.

• Journal of the Korean Institute of Educational Facilities
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• v.8 no.5
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• pp.17-29
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• 2001

• Journal of the Korean Institute of Educational Facilities
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• v.9 no.4
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• pp.87-94
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• 2002

• 한국정보통신설비학회:학술대회논문집
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• 2009.08a
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• pp.165-169
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• 2009

도로, 교량, 하폐수처리장, 공동구와 같은 도시기반시설은 u-City 구축에 있어 근간이 되는 요소로서, 도시민에게 편리한 삶을 제공해주는 동시에 지속적인 유지관리가 수반되어야 할 시설들이다. u-City는 이러한 도시기반시설을 u-IT기술을 활용하여 융복합, 지능화 함으로써 도시민에게 보다 유이한 서비스를 제공하고, 관리자에게 보다 효율적인 유지관리 업무를 수행할 수 있도록 하는 공간으로서, 현재 이에 대한 연구개발이 활발히 진행되고 있는 추세이다. 본 논문에서는 이러한 취지에서 도출된 도시기반시설 서비스와 관련 요소기술 개발 내용을 소개하고, 현장 적용성 시험에 필요한 테스트 베드 구축 내용을 고찰하고자 한다. 이 테스트 베드는 현장 적용 상태에서의 성능을 검증하고 실용 가능한 수준으로 고도화 하기 위하여 구축된 횡단보도가 포함된 왕복 6차선 도로로서, USN 센서 및 싱크노드, 봉합 콘트롤러가 설치되어 원격으로 상황을 감시할 수 있도록 구성되어 있다.

• Journal of the Korean Institute of Educational Facilities
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• v.10 no.5
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• pp.113-127
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• 2003