• 한국측량학회지
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• 제25권2호
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• pp.165-175
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• 2007

오늘날 도시공간에 건축되는 건축물은 건물사이 공간을 크게 확보하여 건물내부에 충분한 일광을 얻도록 노력하고 있으며, 건물의 일조량은 건물의 높이뿐만 아니라 건물간의 간격이 매우 중요하다. 하지만 오늘날 고밀도 개발로 인하여 건물사이 간격을 충분하게 확보할 수 없고 쾌적한 거주환경에 대한 요구가 강해지면서 일조권 분쟁이 증가되고 있다. 따라서 본 연구에서는 LiDAR 자료와 수치지도를 연계하여 3차원 국토정보를 구축한 후 일조권분석에 적용하여 다음과 같은 결론을 얻었다. 태양의 고도와 방위각을 이용하고 3차원 도시공간을 정확하게 시뮬레이션하여 각각의 세대별 일조권을 총 일조시간과 연속 일조시간으로 구분하여 정량적으로 분석함으로서 일조권 침해 여부를 보다 정밀하게 판단할 수 있는 방법을 제시하였다. 3차원 국토정보를 이용한 일조권분석방법은 지자체에서 도시계획 및 건축 인허가 업무를 수행할 때 보다 정확한 자료를 제공하여 줄 것으로 판단된다.

• 한국정밀공학회지
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• 제26권8호
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• pp.126-131
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• 2009

Acetabular dysplasia is a condition defined by inadequate development of an individual's acetabulum. Individual diversity of the symptoms in this disease needs safe and accurate preoperative planning. Technologies that utilize multidimensional image information are thus important. The assessment method by Janzen et al. was suggested a coefficient method in evaluation of acetabular dysplasia. In this study, we applied it, using a three-dimensional computed tomography (3D CT) on the koreans. 19 cases of the normal hips and 4 cases of the acetabular dysplasia were investigated to evaluate the proved method; 3D CT was used to define the geometric center of the femoral head and to measure center edge angles at $10^{\circ}$ rotational increments around the acetabular rim. Mean and standard deviation in CEAs (Center Edge Angle) of normal 19 hips at $10^{\circ}$ rotational increments from anterior to posterior rim were determined, and termed as a 'normal curve'. Then this normal values were compared with the CEA data measured from 4 cases of acetabular dysplasia patiens. Quantative comparison of the CEA values between the normal cases and dysplasia cases was successfully demonstrated, and thus, we claim that this simple CT method of assessing acetabular dysplasia can be well applicable to diagnosis, quantification and surgical planning for adult acetabular dysplasia patients.

• 한국콘텐츠학회논문지
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• 제6권4호
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• pp.81-88
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• 2006

유비쿼터스 구현에 대한 다양한 연구와 시도들이 진행되고 있다. 현실공간에 익숙한 일부 공간계획가들과 GIS 전문가들은 유비쿼터스의 구현을 위해서는 사이버공간에 3차원 그래픽 공간을 구현하여야 한다고 주장하고 있다. 이러한 주장의 근간에는 유비쿼터스 환경에서 현실공간과 사이버공간이 어떤 식으로 든 결합 혹은 융합될 것이라는 가정을 가지고 있다. 따라서 이러한 주장을 하기 위해서는 사이버공간에 대한 정확한 이해가 필수적이다. 이러한 배경을 바탕으로, 본 연구는 다양한 문헌연구를 검토하여 사이버공간 내 3차원 그래픽 공간 구축 논의에 대한 비판적인 고찰을 시도하였다. 본 연구의 발견은 다음과 같다. 첫째 사이버공간내 3차원 그래픽 공간 구현을 위한 기존의 주장들을 확인하고, 그에 내재된 문제점들을 규정하였다. 두 번째, 유비쿼터스 구현을 위한 다양한 노력들을 살펴보고, 이들 중 새로운 공간으로서 유비쿼터스에 접근하는 논리에 대한 재고찰이 필요함을 확인하였다. 마지막으로, 사이버공간의 자기조직화경향과 비선형적 인간행태에 대하여 살펴봄으로써, 3차원 그래픽 환경이 가져온 단선적 공간에 대한 한계를 명확히 하였다.

• 농촌계획
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• 제11권2호
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• pp.43-49
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• 2005

As information has been brought to public attention, information storage as well as information usability has been important. Rural information is produced in many areas and institutions. However, it is difficult to use rural information comprehensively. Since formats for management are various, it is difficult to have unified frame. In this research, a schema of database fer integrating rural data is designed to improve usability using dimensional modeling. First of all, rural data are analyzed for designing integrated rural database schema. Rural data used are 'National Agricultural Statistics' and 'Gun annual statistical report'. Analysis shows that there are three considerations; administrative district, time-dependency and classification of data. Considering these three requisite, we designed database schema using dimensional modeling. The reason of using dimensional modeling is to improve usability and effectiveness. If the database was designed using ER modeling, many tables have to be joined every searching time. Separately from integrated rural database schema, user's database schema is designed considering usability. Through user's database, users can modify data or generate new data and save these processes. These make it possible to use generated data repeatedly. We evaluate usability, contribution, and effectiveness of data manipulation on the integrated rural database. We propose an integrated rural database structure improving the accessibility and usability of rural data and information and verified the data model based on a practical example.

• 한국콘텐츠학회논문지
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• 제4권2호
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• pp.7-12
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• 2004

다양한 도시의 형태를 입체적으로 조망해 볼 수 있도록 하기 위하여 입체 지형조감도를 작성하였고, 이를 시공간에서 동영상으로 보여주기 위하여 3차원 시뮬레이션을 실시할 수 있도록 하였다. 입체 조감도의 제작은 투시기법을 이용한 이미지 제작 기법을 이용하였으며, 그 기본 재료가 되는 영상들은 다음과 같이 준비하도록 하였다. 준비영상으로는 우리나라 아리랑 위성의 EOC(Electro optical Camera) 영상을 이용하였으며, 국토지리정보원에서 국가기본도로 제작한 1/5,000수치지도의 등고선으로부터 추출하여 임의로 오차가 보정된 DEM(Digital Elevation Model) 생성과 1/1,000 수치지도의 도로 레이어 벡터파일로 제작된 도로선을 분류하여 대상지의 3차원 영상 위에 중첩시켜 처리하는 것으로 하였다. 특히 이번 연구에 사용한 도심지역의 도로망 구성 데이터는 새주소 부여를 위해 제작된 1/1,000축척의 간선도로를 최대한 이용함으로서 새주소에서 사용하게 될 주소체계와의 연계성을 크게 염두에 두어 제작하도록 연구하였다.

• 한국지리정보학회지
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• 제5권3호
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• pp.1-8
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• 2002

지형에 대한 입체적인 조감도의 작성기술은 여러 건설공사의 계획수립과 설계를 위하여 매우 중요한 요소로 활용될 수 있다. 본 연구에서는 원격탐지된 위성영상을 이용하여 기존의 수치지형도와의 결합을 통한 3차원 영상 지도의 제작을 시도하여 다차원적인 분석이 가능한 입체 영상 조감도를 작성하였다. 이를 위하여 GCP에 의한 정사투영된 영상 및 등고선으로부터 생성된 DEM의 결합으로 3차원 지형분석이 가능한 지형의 입체화를 실험하여 건설공사 예정지역의 도로 노선의 연계에 의한 입체적인 접근이 가능한 3차원 조감도를 제작할 수 있는 기술을 개발하였다. 이러한 입체 영상 조감도의 작성에 의한 다각적인 지형분석이 가능하도록 하였고, 건설공사 예정 지역의 실시간적 가상적인 접근이 가능한 연구결과를 얻어냄으로써 균형적인 국토개발 및 건설분야에서의 다양한 활용을 유도할 수 있었다.

• Journal of International Society for Simulation Surgery
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• 제3권1호
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• pp.36-38
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• 2016

Fibrous dysplasia is a relatively rare disease but the management would be quite challenging. Because this is not a malignant tumor, the preservation of the facial contour and the various functions seems to be important in treatment planning. Until now the facial bone reconstruction with autogenous bone would be the standard. Although the autogenous bone would be the ideal one for facial bone reconstruction, donor site morbidity would be the inevitable problem in many cases. Meanwhile, various types of allogenic and alloplastic materials have been also used. However, facial bone reconstruction with many alloplastic material have produced no less complications including infection, exposure, and delayed wound healing. Because the 3D printing technique evolved so fast that 3D printed titanium implant were possible recently. The aim of this trial is to try to restore the original maxillary anatomy as possible using the 3D printing model, based on the mirrored three dimensional CT images based on the computer simulation. Preoperative computed tomography (CT) data were processed for the patient and a rapid prototyping (RP) model was produced. At the same time, the uninjured side was mirrored and superimposed onto the traumatized side, to create a mirror-image of the RP model. And we molded Titanium mesh to reconstruct three-dimensional maxillary structure during the operation. This prefabricated Titanium-mesh implant was then inserted onto the defected maxilla and fixed. Three dimensional printing technique of titanium material based on the computer simulation turned out to be successful in this patient. Individualized approach for each patient could be an ideal way to restore the facial bone.

• 농촌계획
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• 제25권4호
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• pp.129-149
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• 2019

This study is to give a three-dimensional view of the concept of rurality and ruralness in terms of time-span, perceived object and awareness level. In the precedent studies ruralness or rurality has been approached as the category of usefulness resources called amenity. This overlooked the perceived representation, institutional reference and rurality of ideological values. Rurality appears as a cumulative representation of being rural from the past to the present, but ruralness exists as a desirable form or value for the future. Through this study, it has been analyzed that ruralness consists of six realms such as environment, community, self-reliance, aesthetics, enjoyable amenity and settlement, and of three or four sub-realms by each amounting to 20 in total. According to the vocabulary listing by the survey to 30 experts, rurality for the past-present is mainly imagined as of natural environment, agriculture, landscape, and community history, while ruralness for the future is frequently described as of communities, settlement and self-reliance by number of references. Through the vocabulary extraction, 17 words in the level of mid-conception are induced including ecology, comfort, history, agriculture, landscape, place, culture, convenience, etc. In conclusion the concept of ruralness along with rurality could be organized into three different layers of perception consisting of representation, norms and usefulness.

• 대한기계학회논문집
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• 제19권2호
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• pp.568-579
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• 1995

An off-line programming (OLP) system was proposed and developed in order to save cost and time in adjusting a robot to new workcells or applying new algorithms to actual trajectory planning. The developed OLP system was especially designed to be operated in a PC level host computer. A SCARA robot with four axes was selected as an objective robot. The OLP system developed in this study consisted of such modules as data base, three-dimensional graphics, kinematics, trajectory planning, dynamics, control, and commands. Each module was constructed to form an independent unit so that it can be easily modified or improved. The OLP system was programmed for a graphic user interface in Borland $C^{++}$ language. Some of system operating commands and an interpreter were devised and used for more convenient programming of robot simulations.s.

• 한국실내디자인학회논문집
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• 제24권6호
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• pp.30-37
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• 2015

This study has the purpose to investigate the landscape plans focused on the public sector housing complexes in the Seoul Metropolitan Area in the 2000s. The targeted subjects of this study are 24 districts conducted by the Corporation, and the spatial extent is limited to Seoul metropolitan area. The scope of the research is limited to the public sector, because this sector has been conducted preferentially for public needs rather than the development profit, and has positively reflected the will "pre plan - post development". In view of the study methodologies, this study examined the transition process in Korea housing complex and analyzed the design reports to extract the key planning concepts and planning methods of landscape planning. The main concepts of landscape planning analyzed in this study were urban landscape, natural landscape, streetscape, architectural landscape, axis for viewing, landmark, skyline and landscape by areas. The key planning methods of landscape planning were landmark, which is a point landscape element, axis for viewing and skyline, which are linear landscape elements, landscape by areas which is an area landscape element, and finally complex landscape, walking landscape and nightscape, which are three-dimensional landscape elements.