• 한국CDE학회논문집
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• 제13권6호
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• pp.429-439
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• 2008

With a remote operated manipulator system, the situation at a remote site can be rendered through remote visualized image to the operator. Then the operator can quickly realize situations and control the slave manipulator by operating a master input device based on the information of the virtual image. In this study, the remote operator visual support system (ROVSS) was developed for viewing support of a remote operator to perform the remote task effectively. A visual support model based on virtual environment was also inserted and used to fulfill the need of this study. The framework for the system was created by Windows API based on PC and the library of 3D graphic simulation tool such as ENVISION. To realize this system, an operation test environment for a limited operating site was constructed by using experimental robot operation. A 3D virtual environment was designed to provide accurate information about the rotation of robot manipulator, the location and distance of operation tool through the real time synchronization. In order to show the efficiency of the visual support, we conducted the experiments by four methods such as the direct view, the camera view, the virtual view and camera view plus virtual view. The experimental results show that the method of camera view plus virtual view has about 30% more efficiency than the method of camera view.

• 한국압력기기공학회 논문집
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• 제11권2호
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• pp.68-74
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• 2015

Time domain response analysis for vibro-impact nonlinear behavior of multi-span tube with loose supports was performed using commercial FEA code and user subroutine. Support geometry of multi-span tube with a finite gap is realistically modeled by analytical rigid surface. Model of hydrodynamic force is based on the Qusai-steady model which accounts for the inclined angle of relative flow velocity and time delay between flow force and resulting tube motion. During tube vibration from flow loading, impact and friction at the support location is simulated using commercial FEA code with master slave contact algorithm. Analysis results has reasonable agreement with those of references and test experience. Plan of further refinement of analysis model and future test verification is briefly introduced.

• 한국주거학회논문집
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• 제9권2호
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• pp.57-66
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• 1998

The purpose of this study is to provide a basic for a desirable bathroom plan of apartments. As a first step in this process, we analyzed the bathroom plans of the apartments(area: 10-69 pyung) constructed in 8 sections in Seoul from 1971 to 1995 where 65,801 households live. In this study, the numbers, location, size, and proportion of the bathroom and dressing room, and the direction of the bathroom door in apartments are examined. The major frindings are as follows; 1) We have found that the numbers of bathrooms to increase in more than 20s pyung apartment since 1990. 2) Except a master bathroom, the another one for the guest is located in enterance in more than 40s pyung apartment. 3) The door of the bathroom faces corridor in more than 40s pyung apartment. So, it is possible for them to lessen discomfortness when they coming in and out of the bathroom. 4) It was found that the size of bathroom were decreased in most cases. 5) They did not plan a dressing room in 10s pyung - 60s pyung and the size of dressing room was decreased in 60s pyung apartment.

• Smart Structures and Systems
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• 제5권1호
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• pp.43-54
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• 2009

This study introduces a novel approach for locating damage in a structure using wireless sensor system with local level computational capability to alleviate data traffic load on the centralized computation. Smart wireless sensor systems, capable of iterative damage-searching, mimic an optimization process in a decentralized way. The proposed algorithm tries to detect damage in a structure by monitoring abnormal increases in strain measurements from a group of wireless sensors. Initially, this clustering technique provides a reasonably effective sensor placement within a structure. Sensor clustering also assigns a certain number of master sensors in each cluster so that they can constantly monitor the structural health of a structure. By adopting a voting system, a group of wireless sensors iteratively forages for a damage location as they can be activated as needed. Since all of the damage searching process occurs within a small group of wireless sensors, no global control or data traffic to a central system is required. Numerical simulation demonstrates that the newly developed searching algorithm implemented on wireless sensors successfully localizes stiffness damage in a plate through the local level reconfigurable function of smart sensors.

• 한국전통조경학회지
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• 제34권1호
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• pp.18-39
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• 2016

본 연구는 조선시대 궁궐에 나타난 핵심전각의 배치형식을 주산과의 관계로 검토하여 궁궐 축선에 투영된 풍수개념과 그에 따른 계획원리를 고찰하는 것이다. 조선 건국 직후 창건된 경복궁은 거대한 분지의 중앙에 입지한 자금성과는 달리 도성 서북쪽에 치우친 곳이면서 백악산의 산줄기가 끝나는 지점에 입지하였다. 태종 때 창건된 창덕궁도 마찬가지로서 삼각산의 또 다른 지맥인 응봉 아래에 궁궐터가 마련되었는데, 모두 산의 정기를 궁궐에 담으려 했던 의도를 담고 있다. 이러한 관념은 구체적으로, 궁궐 내부의 정전, 편전, 침전 등 임금과 관련된 주요 건물의 배치가 주산의 내맥에 따라 배치되는 것으로 이행되었다. 특히 대내에 들어와 있는 아미사는 궁궐터가 정해졌던 근거지형이기도 했지만 전각배치가 이루어진 기준점으로 작용하였다. 아미사를 기점으로 하는 축선은 풍수적 의미의 좌향이 건축적 형식으로 구현되는 형식이었으며, 주례에 근거한 전조후침과 삼문삼조를 실현하는 형식으로 통합되어 나타났다. 한편 양궐 모두 아미사가 혈진처(穴盡處)를 이루고 있는 곳 가까이에는 임금의 정침이 우선적으로 입지되었다. 침전의 남쪽에는 보통 편전이 배치되었는데, 이는 임금이 아미사 혈의 순수한 지기를 가장 먼저 점유하고 누리고자 하는 실리를 따른 결과로 판단된다. 중축선 배치가 뚜렷한 경복궁의 경우, 하나의 주맥 하에 침전, 편전, 정전이 일원적으로 배치되었고, 내맥이 분산된 창덕궁은 정전과 침전의 축이 형편에 따라 나뉘어 졌다. 정전의 입지형식은 최소한의 풍수적 이점을 취하되 왕의 권위를 드러내는 공간의 질서와 형식이 보다 중시된 것으로 조사되었다.

• 건축역사연구
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• 제15권2호
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• pp.95-114
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• 2006

This study was conducted on the premise that plan types of the public residential houses proposed after the 1945 implicatively showed the developing process of the modern housing. The formal characteristics created through the developing process were analyzed in Micro-Historically. Moreover, by providing a new viewpoint on the changes of the residential houses that occurred around 1945, we tried to provide the fundamental research background for the research on the developing processes of the future housing cultures. The research pursued mainly on the major spaces that became the modern change indices of housing plan changes from the traditional housings in 1940s to the modern housings such as the master bedrooms(An-Bang), kitchen, the main floored-space(Maru), and the secondary bedroom (Kune-Bang). The major experimental subjects are the 87 public residential plan types designed and supplied by the Korea Housing Cooperation in between 1945 and 1970. The study synthesized the developing process of the public residential houses from the traditional residential houses in 1940s through modern situation and intrusion of foreign housing cultures. Following results were derived from the study: First, various and experimental housing plan types had been proposed as public residential houses since 1945. Among them, the plan having the main floored-space(Maru) were the representative type of public residential houses and various series of houses were constructed based on this type. Second, the main floored-space(Maru) type had continued building connection order of the R-M-R that were used in the traditional houses. On the other hand, with decomposition of connecting ring between the main floored-space(Maru) and the kitchen, rationalization of women circulations and introduction of family-centered spaces had been resolved the demands of modern society. It had greate effect on settlement of the current double-row Maru plan type. Third, in Korea most of plan types for the public residential houses were proposed in between 1945 and 1965. Forth, the location of kitchen and relation between Maru and the master bedroom were arranged visually on the corner and center of the rear row with the micro change characteristics of the public residential houses. In this process, the front row was similar with traditional residential houses but the rear row was differentiated and developed with expansion of Maru and Ondol rooms, increase of closet spaces, and introduction of kitchen that divided spaces for sleeping and eating.

• 한국ITS학회 논문지
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• 제21권2호
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• pp.33-43
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• 2022

자동차의 증가에 따른 사고는 꾸준히 증가하고 있다. 교통사고로 인한 사망자수를 줄이기 위해 많은 안전정책이 추진되고 있으며 교통사고 사망자수를 제로로 만들기 위한 노력이 계속되고 있다. 2016년에 수립된 「제3차 교통안전기본계획」에 따르면 안전시설에 대한 개선사업은 누적사망자수가 가장 많은 지역을 우선으로 하도록 되어있다. 이는 시에서 관할하는 도로의 경우 어느 정도 합당한 방법이기는 하지만 구에서 관리하는 20m미만도로의 경우 사망자수가 기준치에 크게 미치지 못하는 현실에서 단순히 사망자수가 많은 지역을 위주로 개선방안을 내는 것은 합리적이지 않을 수 있다. 또한, 사망사고의 발생 원인이 특별한 안전시설이나 제도의 미비 때문인지 우연의 발생인지를 알아내기에는 사고건수가 상대적으로 미미하기 때문에 전체 사고를 기준으로 하는 것이 장래 더 많은 효과를 볼 수 있는 개연성이 있다. 본 연구는 사고비용을 토대로 사망사고 발생지역과 사고다발지역에 대한 비용분석을 통하여 이를 비교하였다. 3개의 산정방식을 이용한 사고비용 분석결과 모든 교통사고의 비용이 포함되었을 때에 사망자수가 없는 신촌네거리의 비용이 기존에 사고누적지역으로 채택된 시온보육원입구 삼거리의 비용보다 높게 나타나는 것으로 나타났다. 연구결과를 고려했을 때 교통사고 누적지점 선정 시 사고에 따른 비용, 사고 심각도에 대한 가중치 등을 고려하여 지점을 선정할 필요가 있다.

• 한국산학기술학회논문지
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• 제15권4호
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• pp.2460-2468
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• 2014

본 최근 이상기후 현상으로 인하여 단시간동안 특정지역에 집중되는 국지성호우가 빈번하게 발생하고 있어, 잠재적인 침수재해에 대비하기 위해 적합한 설계빈도를 적용할 필요가 있다. 그러나 하천설계기준을 살펴보면 배수문의 수문설계빈도는 20년 이상으로만 명시되어 그 설계빈도에 대한 기준이 상세하지 않음을 알 수 있다. 하지만 침수피해를 저감하기 위해 외수를 고려한 제내지 침수모의가 수행되어 정량적 평가를 요한다. 내수침수모의는 보통 수리 수문학적 특성을 동시에 고려하여 매우 복잡하고 시간이 오래 소요되었다. 따라서, 본 연구에서는 기 설립된 하천관련 보고서를 이용하여 간단하면서도 단시간에 평가할 수 있는 방법을 제안하였고, 하천의 중류 및 하류에 배수문이 설치된 5개소의 제내지를 대상으로 설계빈도에 따른 9가지 확률강우량을 적용하여 설계빈도 및 위치에 따른 영향을 평가하였다.

• 한국지리정보학회지
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• 제4권4호
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• pp.29-38
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• 2001

본 연구는 도시계획의 중요한 의사결정 중의 하나로서 토지이용계획을 위한 적지분석에 지리정보시스템의 접목을 시도한 것이다. 도 농 통합 이전의 구미시 지역을 대상지역으로 하여 관련 환경인자들과 가중치 등의 분석기준을 결정하고, GIS 데이터베이스를 구축하였다. 또한 위성영상처리를 통하여 추출한 토지이용/피복도와 NDVI 식생도를 데이터베이스에 포함시켰다. 중첩법을 이용하여 주거, 상업, 공업, 녹지지역의 토지용도별 적지를 등급별로 도출하였다. 연구지역의 4가지 기능공간에 대한 적지분석 결과는 기존 토지이용 및 도시기본계획상 토지이용구상도와 비교되었다. 더 나은 분석을 위해서는 실제적인 개발계획, 지가자료, 토양자료 등이 포함되어야 하며, 토지 이용별 수요추정 자료를 추가한다면 토지이용별 입지 배분 및 분포면적의 신뢰도를 더 높일 수 있을 것이다.

• 한국환경복원기술학회지
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• 제6권6호
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• pp.14-24
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• 2003

This study had researched use conditions of forty-seven arboreta in the inside and outside of the country for the suggestion of activation plan of provincial arboretum. Chungnam Keum-Kang Arboretum in Kongju-Si, Chung-Cheong Nam-Do, had been surveyed as a case study. The survey was focused on current condition, location, ecological resources, characteristics and so on. In addition, questionnaire of users of Keum-Kang arboretum were conducted. Chungnam Keum-Kang arboretum is located in the inland area and has many vegetations. It is a provincial arboretum which was planted by trees, shrubs and vines, and a public garden which was used by paid admission. It has natural recreation forests, tropical green houses and breeding grounds for birds and wild animals. It, however, has many problem in the use and management system. And the shortages of attraction and program for user are serious problem. For the use activation and the improvement of management of this arboretum, this study suggested as follows ; (1) The responsible experts in charge of the general management of arboretum are demanded. (2) Term master plan for improvement of arboretum must be established. (3) It is necessary to manage for collection, propagation, display and preservation of plant species. (4) It is necessary to hold suitable and variety events for the seasons. (5) It is needed to arrange fitly convenience facilities.