• 한국측량학회지
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• 제27권1호
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• pp.701-711
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• 2009

건물의 형태가 고층화되고 대규모의 복합공간을 이루게 되면서 건물의 실내공간은 더욱 복잡하고 다양한 활동들이 일어나는 공간으로 새롭게 인식되고 있기 때문에, 실내공간을 3차원으로 모델링하여 위치정보를 기반으로 다양한 분야에서 활용될 수 있도록 할 필요가 있다. 본 연구에서는 GIS 표준 웹서비스 기술과 3차원 시각화 기술을 화재 대피 시설물 관리 상권 분석과 같은 건물과 관련된 어플리케이션에 활용하여 효율적인 의사결정을 내릴 수 있도록 3차원 실내모델의 정보를 제공할 수 있도록 하였다. GIS 표준 웹 서비스를 활용하여 건물정보를 공유할 수 있도록 건물의 3차원 실내공간을 효율적으로 모델링하고 시각화하기 위한 방안을 제시하기 위해 실내모델의 다양한 구성요소들을 분할하여 모델링 된 공간데이터베이스의 지정된 데이터테이블에 저장하고, 각각을 GIS 웹 서버를 이용하여 웹서비스 할 수 있도록 설정하였다. 3차원 그래픽 렌더링 엔진을 이용하여 GIS 웹서비스로 전달되는 실내모델을 동적으로 재구성함으로써 효율적으로 3차원 시각화할 수 있는 모듈을 개발하여 다양한 어플리케이션에 활용할 수 있는 방안을 제시하였다.

• 항공우주시스템공학회지
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• 제16권6호
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• pp.24-34
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• 2022

본 연구에서는 우주 그물의 우주 물체 포획 성능을 향상시키기 위하여 충격 흡수의 이점을 가지는 거미집 구조의 생체 모방 우주 그물을 이용한 우주 물체 포획 시뮬레이션을 수행하였다. 포획 시뮬레이션은 비선형 구조 동역학 해석 프로그램인 ABAQUS를 이용하여 수행하였다. 우주 물체는 12U 크기의 CubeSat을 강체로 모델링하였다. 거미집 구조의 우주 그물은 대각선 길이가 2.828 m이며, 탄성보 요소를 이용하여 구현하였다. 동일 중량의 정사각형 우주 그물의 포획 시뮬레이션 결과와 비교하여 생체 모방 우주 그물의 포획의 우수성을 확인하였다. 또한, 거미집 구조의 우주 그물을 이용하여 우호적 및 비우호적으로 운동하는 우주 물체를 포획하는 수치 시뮬레이션을 수행하였으며, 우주 물체의 포획 성공 및 실패 사례를 조사하였다.

• International Journal of Aeronautical and Space Sciences
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• 제9권1호
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• pp.137-146
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• 2008

Proper amount of entrained air and nip force should be also considered to minimize ballooning phenomenon since tight contact between a roller and web is required. In this paper, various web materials, PET(Polyester) and OPP(Oriented Poly Propylene) have been selected and investigated to satisfy high-speed printing requirement. Several web speeds, web tensions, and temperature conditions are imposed on each web materials and the pressure and gap profiles as well as nip force have been calculated. Increase of both the winding roller radius and the incoming wrap angle is considered under proper taper tension at 500 m/min of rewinding roller. By solving coupled Reynolds equation and web deflection equation simultaneously, the fluid-structure interaction process has been developed and is applied to the rewinding roller to investigate the ballooning phenomenon which causes guiding problems in high-speed printing performance conditions. By adjusting the linear taper tension, stress distribution between rewinding webs can be remarkably reduced and stable pressure and gap profile with ignorable ballooning phenomenon have been found.

• 천문학회보
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• 제43권2호
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• pp.49.3-50
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• 2018

Korea has kept its records of astronomical phenomena since around 2,000 years ago. However, the contents and scope of relevant service have been limited for researchers who need those records due to lack of complete data collection. In this regard, it is necessary to establish efficient collection and management systems of Korean astronomical records by utilizing an environment that is easily accessible. This study is intended to complete the development of a testbed system that allows researchers to systematically input and validate, in a Web environment, multiple astronomical records among the historical documents until Modern Joseon after the Three Kingdoms Period. Recognition of the pre-translated data and tables in advance is followed by its storage in the database built on the Web. Then, data validation is implemented by providing a retrieval service according to a specific form to only a finite number of researchers who have access authority. This study is targeted at a testbed system that takes around three months to be completely developed. The completed testbed system is expected to allow internal and external researchers of an organization to easily access the service on the Web. This will ensure that the accuracy of the data can be verified mutually and help identify areas of service improvement. The opinions collected regarding service improvement will be reflected in the future system. Eventually, domestic astronomical records will subsequently be able to be utilized internationally through the multilingual service.

• 디지털융복합연구
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• 제5권2호
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• pp.135-154
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• 2007

Web 2.0 is a platform which produce various service offered data from many people and it is activity open space depend on user focused community in diversity web environment. Web 2.0 is simple link structure with web site connectivity in informations such as page to page in other words, it is meaning of developing of semantical and circumstantial connection. The core of web 2.0 is user participation. RSS, Mash-up, UCC are main service of web 2.0 which make user directly participate from center of service offer to center of user manufactured an informations and then they offer re-information to other areas, also user freely express what they want through UCC and blogger. However, recently it comes the argument of skeptic of web 2.0 problem. Thus, In this research I will try to give an right comprehension and will try to have more accurate prediction of web 2.0 with the study of open service of web which is the key of web 2.0 success in a future.

• 한국주거학회논문집
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• 제17권2호
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• pp.97-106
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• 2006

The purpose of this study is to provide basic data for the planning of adolescents preferred space, and fur the purpose of the study analyzed the spaces made by them in the web site where 3-dimension space manipulating is possible and captured their consciousness of space. The study was to interview 60 adolescents in the web-site by video chatting and observation by video ethnography. The results are as follows. 1) Three-dimension space is where adolescents express their present preference for spaces of residence, leisure and outer activities, and where they reveal their desire to be realized in the future. 2) Adolescents foster friendship in the cyberspace, where they meet friends and enjoy talking and share their desire for space creation which is hardly come true in reality. 3) It is possible to grasp their latent preference of space, and actualization of the cyber preference would give them more satisfaction.

• 한국실내디자인학회논문집
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• 제16권1호
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• pp.126-134
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• 2007

This study researches the effectiveness of virtual experiences as an evaluation method in design. For the study, I researched the result on the spatial recognition before, abstracted visual objects and factors in recognition process and made up 43 inquiries for the evaluation through the experts group. Besides, set the analytical code between recognition factor and spatial constituents, made analysis the result from it. From April 1st to June 30th in 2004, the virtual model of educational place, college main building and city library was established as a subject of the research and studied the result. The methods that are used for the study are frequent analysis, T-test, reliability analysis, factor analysis etc. and SPSSWIN Package is used for the statistic analysis. There were two times of analysis on the evaluation to analyze the effect of virtual models on the web basis, one group evaluated the virtual building same as real and the other group evaluated the building site. Then analyzed the differences and correlation between the two. In result, college building, the first subject of study, and the second city library shows that made little differences between on the spot evaluation and virtual evaluation. Therefore, it is considered that the design evaluation with virtual model on the web basis has a vantage. But some problems founded that solved between preceding and present research through the feedback. It is as follows, 1. detection of problems that insufficience validity in the first survey. 2. found some not-validity inquiries. 3. detection of necessities that qualitative improvement and technical repletion in virtual environment.

• 한국항공우주학회지
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• 제35권12호
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• pp.1121-1128
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• 2007

다분야 통합 최적설계(MDO)는 여러 설계분야가 복잡하게 얽혀서 설계가 진행되어야 하는 항공기나 우주발사체등의 설계에 매우 유용하게 적용되고 MDO 시스템은 다양한 설계 분야의 통합적이고 동시적인 해석 및 설계 최적화를 위한 통합 환경 또는 시스템이다. MDO 시스템은 이기종의 환경에서 분산되어있는 다양한 해석 코드 및 최적화 코드, CAD, DBMS, GUI등의 자원들을 통합하고 효율적으로 사용할 수 있어야하며 협업설계환경을 제공해야한다. 본 논문에서는 웹 서비스 기반의 글로버스 툴킷을 이용해 설계자원들을 통합하고 워크플로우, 에이전트 등의 자동화 기술을 이용해 유기적인 자동실행을 제공하며 웹 유저 인터페이스를 통해 협업설계환경을 제공하는 웹 서비스 기반 MDO 시스템의 구축방안을 제시한다.

• 정보처리학회논문지D
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• 제10D권7호
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• pp.1177-1188
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• 2003

본 논문에서는 H.323 표준을 만족하는 게이트키퍼와 웹 서비스를 이용한 멀티미디어 회의 사이버 공간을 설계하고, 구현한다. 본 논문에서 구현된 게이트키퍼는 H.323 영상회의용 단말기들의 등록 및 호 제어 관리를 담당하며, 웹 서비스를 이용하여 디렉토리 서비스를 제공함으로써 등록된 사용자의 효율적 관리를 가능하게 한다. 또한, 웹에서의 컨트롤 자동 다운로드 기능을 통하여 영상회의 시스템 소프트웨어의 유지 보수를 사용자가 아닌 서비스 공급자가 직접 설정하게 함으로써 보다 향상된 영상회의 시스템의 관리 방법을 제공한다. 마지막으로 디렉토리 서비스의 다양한 응용을 통한 영상회의 서비스의 활용 방안을 제시한다.

• 제어로봇시스템학회논문지
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• 제13권12호
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• pp.1167-1172
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• 2007

The existing building control and automation systems which have been applied to buildings are provided by many different vendors and each vendor has its own proprietary protocol. There are many problems in system integration since those building control and automation systems belong to each vendor. Also, the problems of cost and space increase, due to the usage of personal computers as the control servers of DDC(Direct Digital Control) in each facility. Those problems mentioned above can be effectively resolved by using XML Web Services and Embedded Web Server. Embedded Web Server and XML Web Services are technologies emerging out of the IT industries and there are many researches to apply them into many fields. In this paper, Embedded Web Server and XML Web Services are proposed to be used in building control and automation system to resolve problems in building system integration.