• Journal of Korean Society for Geospatial Information Science
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• v.18 no.4
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• pp.87-92
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• 2010

With recent localized heavy rain, the collapsing accident of the cut slopes occur repeatedly every year. The maintenance of the cut slopes is very crucial as the collapsing of cut slopes causes various calamities such as human causalities and sweeping away of the roads. By looking at the study of current situation of the cut slopes, designed for maintenance of cut slopes, the locations of the damaged districts are hard to figure out as they are represented through distance mark and longitude and latitude. In this paper has used NDGPS methods and VRS service through GPS signal corrections that are received by DGPS standard department to correctly analyze the exact location and the shape of the slope. The result of this analysis shows that both methods produce similar shape of the slope. Therefore, these two methods, NDGPS methods and VRS service, can be applied to other analysis of cut slopes in different areas.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.1
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• pp.101-114
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• 2008

Ubiquitous City (u-City) and Intelligent Transport System (ITS) provide services, which are different from each other yet have close relation to each other partially. Thus, since a redundancy issue occurs or it is difficult to efficiently provide services depending on the relation degree, it is required to analyze the relation of services between the two systems and to elicit a priority. A table of relation among the services was created and the relation degree was analyzed by performing a survey for experts. As a result of calculating the total marks by accumulating and summing up the survey results, the incident management service and u-accident/calamity and disaster service of the ITS had the lowest value. The project priority was as follows: The basic principle of the project was that services with high relation degrees shall be worked on first. The services were categorized in each step and packaging the services could result in the synergy effect. This study is significant since it analyzed the relation degree between u-City and ITS and proposed schemes for efficiently working on the project by eliciting the priority of the services based on the analysis results.

• Journal of the Economic Geographical Society of Korea
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• v.13 no.4
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• pp.681-696
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• 2010

This paper aims to evaluate the importance of risk factors at each stage of real estate development projects, and to propose risk management plans. For this purpose, possible risk factors at each stage of real estate development projects are extracted through previous studies, questionnaire survey by real estate experts is conducted next. And finally, the importance of risk factors at each stage evaluated using the AHP method. The results of this study are as follows. First, according to the results of evaluating the risk factors by main categories, planning risks in predevelopment stage, licensing risks in developing preparation stage, and cash flow risk in development stage are appreciated as most important risks. Second, according to the results by sub categories, changes in consumer preferences in pre-development stage, contracts and licensing-related work in developing preparation stage, bankruptcy of developers and construction companies in development stage, and compensation for any kinds of accidents in management and operation stage are appreciated as most important risks. Third, the major risk management plans at each stage based on the analysis results are suggested.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.24 no.5
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• pp.106-113
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• 2010

If leakage current is neglected, it can become a cause for disasters such as electric shock and fire, therefore a continuous monitoring is necessary. However in most cases, because management of substations is performed by unmanned systems, or walk-around inspections, continuous monitor is difficult. So when an accident occurs and the cause is not immediately resolved causing the emergency generator's OCGR getting activated by the leakage current that in turn cut off the ACB, the emergency generator may stop working. To prevent such a problem, a real-time integrated monitoring system for monitoring the leakage current returning to the grounding wire of neutral point of the low voltage side of transformer is proposed. Therefore in this paper, the effects of flow of leakage current, which is caused by insulation degradation phenomena or insulation destroy phenomena, were identified by simulation. And through cases studies; the excellence of integrated monitoring system was verified.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1983.05a
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• pp.14.3-14
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• 1983

In recent years there has been considerable interest in reconstructive surgery of the trachea for cervical tracheal stenosis developed by complication of endotracheal intubation or tracheotomy, or trauma of the neck. The methods used to reconstruct the tracheal defects can be repaired with end-to - end anastomosis, cervical flaps, and autogenous graft materials. Since Grillo had undertaken tracheal reconstruction after circumferential resection in dogs, resection and end - to - end anastomosis was used in cases of circumferential stenosis. And, costal, nasal septal and auricular cartilage have been used for the autogenous graft materials. Since Caputo and Consiglio had undergone tracheoplasty with auricular cartilage, Morgenstein reported successful repair of a tracheal defect with a composite postauricular cartilage graft. The advantages of the auricular cartilage graft are its easy accessibility, availability and familiarity to the otolaryngologist. In past 2 years, We performed the tracheoplasty with auricular cartilage graft and end- to end an astomosis after segmental resection in 5 patients who had suffered from tracheal stenosis. And we obtained good results. So, we reported the cases with review of the literatures.

• Korean Journal of Construction Engineering and Management
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• v.10 no.6
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• pp.99-106
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• 2009

In modern society the population of disabled goes on increasing rapidly not only in congenital deformities but also in acquired handicapped persons due to various factors such as car accidents and industrial disaster. And the number of disabled passengers in airports is growing every year with economic growth and globalization in Korea as well. That is the reason why the effort to the convenient facilities for the disabled in airports is needed more. The real situation in airports which are the public buildings is that the effort to install the facilities for the disabled is only perfunctory to meet the legal standard and cannot answer to the expectation of the facilities for the disabled. In this study I would like to give the airport operators the guide line to expand the facilities and the disabled an opportunity to use airports more freely and conveniently through the presentation on the problems and solutions with the current situation of the facilities for the disabled and the satisfaction of users in all airports in Korea.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.6
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• pp.605-610
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• 2016

The ELCB(: Earth Leakage Circuit Breaker) is the only way being used to prevent accidents from happening caused by electrical disaster. However, the existing ELCB has a limit to prevent damages to life and property due to a electric fire and a human body electric shock caused by the resistive leakage current, because of detecting the total leakage current in the block range of 15mA~30mA. It also has problems such as reduced productivity and reliability due to malfunctions by capacitive leakage currents. In this study, we have implemented the algorithm for the resistive leakage current detection technique and developed the resistive leakage current detection module based on a MSP430 processor, 16bit signal processor and this module can be operated in a desired block threshold within 0.03 seconds as specified in KS C 4613.

• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.6 s.165
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• pp.933-941
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• 2007

Nowadays the numbers of the disabled and elderly have been increasing, and the development of adaptive clothing for these people is in demand. The purpose of this study was to give ideas and solutions for the special needs clothing design. The knowledge of medical situation of the individuals with special needs has been examined and factors affecting adaptive clothing were suggested. Twenty-one web sites were investigated and the most practical, functional, fashionable adaptive clothes were suggested by items. Construction and location of openings, number and type of fastenings, and design of garments for comfort and ease of movement were carefully considered in these clothes. Better appearance through improvement of clothing will help these people to believe that they have worth in the sight of others and in their own view of themselves. Disabled and elderly can obtain the quality of life, maintain the dignity, and make the access to the world a little bit easier by solving the particular clothing problems with all these convenient as well fashionable adaptive clothing.

• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.479-483
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• 2012

최근 국내외에서 기상이변에 따른 물 부족에 대응하고 먹는 물의 생산과 공급 효율성 향상을 위하여 스마트워터그리드에 대한 연구가 활발히 진행되고 있는 경향으로 이는 상수도 인프라시설의 운영오류, 자연재해, 사이버를 통한 의도적 공격 등에 대해 안전하고 신뢰성이 높은 시스템을 구축하기 위한 것이다. 또한 상수도 분야에서는 스마트 미터링 개념을 도입하여 상수관망에서 발생되는 각종 사고나 물 손실을 저감하기 위한 노력이 시도되고 있는 실정이다. 일반적으로 누수량이 많을 경우에는 누수의 징후가 지표면에서 확인이 가능하나 미세한 경우 탐사장비의 운영이나 인력의 투입을 통해 가능하다. 물 공급계통인 상수관망에서 물 손실을 저감시키기 위한 방법중 하나로서 수도미터로부터 기록되는 물 사용량 데이터를 이용하여 누수패턴을 추출함으로써 누수감시가 가능하도록 하는 모형을 개발하고자 하였다. 이는 탐사장비에 의한 누수감지와 상호 보완적을 활용할 수 있는 것으로서 사용량 자료를 분석하여 사전에 처리된 자료의 노이즈와 결함 있는 계측값을 필터링시키는 기법이 도입된 것이며 신속한 감지를 통해 누수 지속시간을 감소시킴으로서 누수량의 저감을 목표로 한다. 물 공급 네트워크를 보다 더 효율적 만들 수 있는 누수 감시모형은 상수관망의 운영에 필요한 정보를 도출하기 위하여 보다 정확하고 다양한 수학적 및 통계적 분석을 기반으로 구성되어 누수 외에도 각종 결함을 찾아내는 역할을 수행할 수 있다. 향후 다양한 지역을 이러한 수용가의 물 사용량 미터링 결과를 토대로 실제 사용량과 누수량을 분리하여 분석함으로써 국내 실정에 적합한 누수감시 기술배발 토대를 마련할 수 있을 것으로 판단되며, 누수저감을 위한 실질적인 상수관망의 운영관리 효율향상의 정보로서 활용이 가능할 것으로 판단된다.

• Fire Science and Engineering
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• v.23 no.6
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• pp.32-38
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• 2009

Owing to increase of the large-scaled, high-raised and complexed building construction, the escape design of the building became very important issue to insure the safety of occupant. Specially, it is demanded to have building escape regulation considering for inconvenient movers such as disables elders pregnant women. However, building regulations for inconvenient movers are divided into "Regulation of Escape and Fire-prevention of Building" and "Act on the Promotion and Guarantee of Access for the Disabled, the Aged and Pregnant Women to Facilities and Information". But, for the escape security of inconvenient movers, the connection of each regulation are necessary. So this study suggested the improvement direction of the building escape regulation considering inconvenient movers through the compared analysis on the "Regulation of Escape and Fire-prevention of Building" and "Act on the Promotion and Guarantee of Access for the Disabled, the Aged and Pregnant Women to Facilities and Information".