• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2003.04a
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• pp.562-567
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• 2003

최근 고해상도 위성영상정보의 민간 사용이 활발해지면서 기존에 널리 알려진 위성영상정보 응용분야 뿐만 아니라 새로운 응용 분야에 대한 적용 가능성이 국제적으로 여러 가지 방향으로 모색되고 있다. 본 연구는 이러한 추세를 반영하여 교통 또는 도시교통 환경분야에서의 위성영상정보의 활용 가능성 및 기존 방법론과의 연계를 분석하고, 시험적으로 프로토타입 프로그램을 소개하고자 한다. 일반적으로 교통문제에서의 접근성 분석은 일종의 중력모델로 설명이 가능하며, 교통계획 수립시에 대안 도로 계획선정이나 대중교통 노선결정시에 많이 이용되고 있다. 접근성 분석에 대한 개념은 비교적 간단하여, 교통분석대상구역의 임의 지역에서 유인 요인과 거리를 변수로 하여 적용 목적에 부합되는 대상 지점까지의 정량적 지수정보를 얻도록 하여 몇 가지 결과로부터 출발지점에서 목적지점 또는 대상 지점까지의 손익비용산출에 대한 정보를 얻는 방식이다. 최근에 GIS를 통하여 구축된 교통 데이터베이스정보와 공간분석 기법을 통하여 수행하는 경우가 많으나 현재까지 위성영상정보가 이용된 경우는 거의 보고된 바가 없다. 따라서 본 연구에서는 정사위성 실제 교통시설물이나 교통 대상 객체의 육안 식별이 가능한 고 해상도 위성영상정보는 이러한 출발지-목적지 선정에 적용될 수 있다는 점에 착안하여 기존에 교통분야에서 개발된 몇 가지의 교통 접근성 산출 알고리듬에 위성영상정보가 연계되어 적용될 수 있는 가능성을 검토하였다.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.270-270
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• 2020

자연재해저감종합계획의 주요 사항은 하천, 내수, 사면, 토사, 바람, 가뭄, 대설재해 등 자연재해로 인명피해나 재산피해가 발생할 수 있는 지역을 선정하고, 이에 적절한 저감대책을 수립하는 것이다. 다른 부분별 계획과 달리 자연재해저감종합계획은 다양한 자연재해를 대상으로 하므로 재해 유형별로 서로 다른 공학적 기법을 적용해야 한다. 실무에서는 자연재해저감종합계획 수립시 HEC-RAS, HEC-HMS(하천재해), XP-SWMM(내수재해), RUSLE(토사재해) 등 다양한 수치모형과 ArcGIS, QGIS 등 GIS 분석도구를 종합적으로 활용한다. 이 때, 모형별로 요구되는 입·출력 자료의 형식이 다양하다 보니 자료를 변환하는 등 번거로움이 발생한다. 이러한 배경에서 자연재해저감종합계획 수립에 GDP Tools의 적용가능성을 검토하고자 한다. GDP Tools는 방재설계 편의를 위해 개발된 도구로 자연재해저감종합계획에서 다루는 대부분의 재해유형에 대한 분석을 지원한다. GDP Tools를 이용하면 별도로 자료 형식을 변환할 필요가 없고, 분석 결과를 도면화하는 등 다양한 편의 기능을 활용할 수 있는 장점이 있다. 본 논문에서는 GDP Tools를 활용하여 자연재해 발생가능성을 검토하고, 그 결과를 기존 방법(상용 모형)의 결과와 비교하여 GDP Tools의 성능을 평가하고자 한다.

• Proceedings of the KIEE Conference
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• 2004.04a
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• pp.238-240
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• 2004

현재 우리나라에서 사용 중인 신호시스템은 지상신호 방식인 자동폐색장치(ABS)를 사용한다 이는 선로를 패색구간으로 배분한 후, 각각의 패색 구간에 설치된 신호기에 의해 열차의 이동을 실행한다 이러한 신호체계에 문제점이 발생할 경우, 기관사에게 주의를 환기시켜 강제적으로 열차를 정지시키는 역할을 하는 자동열차정지장치(ATS)가 1969년부터 도입, 사용 중에 있다. 본 논문에서는 ATS 시스템의 고속, 고밀도 운전 적용 가능성 및 차상신호방식 사용시의 ATS 적용 가능성에 대해 분석한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.529-530
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• 2009

웹 브라우저 환경에서 통신 및 화면 갱신 기능을 제공하기 위해서 최근까지 ActiveX를 제공하였다. 하지만 ActiveX 배포에 따른 보안 문제 또는 Spyware 등으로 인한 개인 정보 노출 가능성을 배제할 수 없게 되었다. 따라서 본 논문에서 제안하는 웹 브라우저 환경에서의 통신 모듈 및 화면 갱신 기법을 통해서 ActiveX의 단점을 보완하려 한다. 또한, 여러 분야에서 적용 가능하지만 NMS 원격 감시 모니터링의 시뮬레이션을 통해서 적용 가능성을 검증하였다.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2002.05a
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• pp.227-230
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• 2002

The Loose Part Monitoring System(LPMS) has been designed to detect, locate and evaluate detached or loosened parts and foreign objects in the reactor coolant system. In this paper, at first, we presents an application of the back propagation neural network. At the preprocessing step, the moving window average filter is adopted to reject the low frequency background noise components. And then, extracting the acoustic signature such as Starting point of impact signal, Rising time, Half period, and Global time, they are used as the inputs to neural network. Secondly, we applied the neural network algorithm to LPMS in order to estimate the mass of loose parts. We trained the impact test data of YGN3 using the backpropagation method. The input parameter for training is Rising Time, Half Period, Maximum amplitude. The result showed that the neural network would be applied to LPMS. Also, applying the neural network to the Practical false alarm data during startup and impact test signal at nuclear power Plant, the false alarms are reduced effectively. 1.

• Journal of Korean Society of Transportation
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• v.23 no.3 s.81
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• pp.61-71
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• 2005

We evaluated the availability of Origin-Destination Matrix from traffic counts Using conjugate gradient method to large scale networks by applying it to the networks in 246 zones. As a result of the analysis of the consistency of the model on Nationwide Networks, the upper and lower levels in model had the systematic relationship internally. From the analysis of the estimable power or the model according to the number of traffic counting links, the error in traffic volume had the estimable power in the range of permissible error. In addition, the estimable power of estimation of an Origin-Destination Matrix was more satisfactory than that of existing methods. We conclude that conjugate gradient method cab be applied to nationwide networks if we can make sure that the algorithm of the developed model is reliable by doing various kinds of experiment.

• Korean Journal of Construction Engineering and Management
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• v.23 no.6
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• pp.119-124
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• 2022

Recently a method of constructing architectural products using additive manufacturing technology has been proposed. The additive manufacturing technology automates the construction process and it can secure the safety of workers. In addition, due to the high implementation efficiency of atypical shapes, the applicability to the manufacturing process of buildings and infrastructure is drawing attention. Additive manufacturing technology has the ability of satisfying computer-based construction automation, resource management and construction period prediction which is required in the modern construction industry. However, the industrial application is still limited by insufficient data, standards, regulations, and operating methods. In this study, in order to analyze the applicability of architectural additive manufacturing technology, we manufacture each architectural product with two additive manufacturing systems. In addition, we apply an application of each building product into an appropriate manufacturing system through the AM production decision model. And identify problems in the manufacturing process through empirical experiments. As a result, we propose an extended additive production decision model to improve the quality of building products.

• 한국체육학회지인문사회과학편
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• v.55 no.6
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• pp.417-435
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• 2016

The purpose of this study was to develop a valid, reliable instrument to measure perceived value for Taekwondo performance spectators. The perceived value scale for Taekwondo performance spectators was developed in eight phases. For the development spectators perceived value scale (1) literature review, (2) preliminary factors and items selected, (3) assessment of the items, (4) pilot test, (5) data sampling, (6) validity of development scale, (7) assess reliability of items and, (8) predictive validity of development items. Based on three processes, a new perceived value of Taekwondo performance spectators scale with six factors(cultural, social, hedonic, aesthetic, moral and utilitarian value) and 19 items were developed. The result of predictive validity of development items: first, cultural, social, aesthetics, moral of perceived value had significantly influence on spectators attitude. Second, social, hedonic, utilitarian of perceived value had significantly influence on spectators satisfaction. Third, cultural, social, aesthetics perceived value had significantly influence on future consumption behavior of spectators.

• Journal of Music and Human Behavior
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• v.19 no.1
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• pp.21-41
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• 2022

The purpose of this research was to develop and verify applicability of a musical play program aimed at promoting interaction between immigrant preschoolers and Korean preschoolers. A daycare center serving the preschool-age children of Korean nationals and immigrant families were the site for this research. Utilizing the elements of a musical play (e.g., role playing, narration, and joint music activity), the program was developed for improving interaction among preschoolers, while promoting intercultural acceptance by providing the opportunity to be exposed to music from different cultures and engage in the joint activity using such music. For the purpose of investigate the applicability of the developed program, the program was implemented with two groups of preschoolers and each group received the musical play program for 30 minutes twice a week for a total of 6 sessions. The results of this preliminary study indicate that the musical play program promoted interaction between peers from different cultural background. Based on the results of this study, musical play programs may be helpful in promoting interactions between preschoolers from different cultural backgrounds and increase of acceptance of immigrant students in Korean daycares and schools.

• Korean Journal of Construction Engineering and Management
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• v.14 no.2
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• pp.56-64
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• 2013

New construction technologies, especially automated equipment, are rarely deployed on a construction site where many accidents and claims occur. This study analyzed and derived impact factors for technology adoption to improve the chance of adopting automated construction equipment to the field. First, impact factors were classified into functional and non-functional factors. Then the functional factors were divided into usability and functionality factors, and the non-functional factors into cost, construction property, and organization factors. Next, the importance and realization possibility of each impact factor were analyzed through a survey with experts. Usability and functionality were analyzed to have the highest importance and realization possibility. Lastly, the differences between construction companies and equipment development companies in the importance and realization possibility of each factor were analyzed. Construction companies recognized previous relationship, operator's attitude, members' will, and construction quality more important than equipment development companies.. The equipment development companies should consider these differences between the view of construction companies and that of equipment development companies on the impact factors. The result of this study can be used as a basis for evaluating for automated construction equipment in the preliminary development phase.