• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제15권6호
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• pp.450-453
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• 2009

3D 가상공간이 협업을 지원하기 위해서는 관계자들 간에 직접적으로 의사를 표현할 수 있는 기술을 필요로 한다. 이때 의사표현으로 사용되는 Annotation은 내용표현이 쉽고, 빠를 뿐만 아니라 다양한 형태의 면에 대해서도 의미의 내용이 정확히 전달될 수 있도록 입력 가능해야 하고, 나아가 3차원의 의미를 지니는 내용에 대해서도 다양한 각도에서 이를 인식할 수 있도록 표현되어야 한다. 이 논문에서는 다양한 형태의 면에서도 입력이 가능한 Sketch-Box를 이용한 Sketch Annotation 기법을 제안하고 있으며, 이 Sketch-Box는 3D Annotation으로서 3차원의 의미를 지니는 내용도 효과적으로 전달할 수 있다.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2007년도 한국컴퓨터종합학술대회논문집 Vol.34 No.1 (A)
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• pp.214-215
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• 2007

• 한국멀티미디어학회논문지
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• 제12권10호
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• pp.1466-1477
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• 2009

3D 가상공간은 도시 및 건축 설계 분야에 매우 적합한 활용 기술로 인식되어 다양한 연구가 시도 되고 있다. 그러나 도시 및 건축 설계의 과정이 다양한 관계자들의 협업에 의해 이루어지는 반면, 이를 지원하는 연구는 아직 미흡한 상황이다. 3D 가상공간이 협업을 지원하기 위해서는 무엇보다 가상공간 내에 의사소통을 지원해야 하며, 이를 위해서는 빠르고 직접적인 의사 표현 기술을 필요로 한다. 이러한 의사 표현 방법으로는 Sketch 기법이 효과적이며, Sketch의 부 정확한 선은 협업과정의 아이디어 단계에서 사고의 폭을 넓혀줄 수 있다는 점에서도 매우 효과적인 표현 방식이다. 그러나 이러한 전통적인 Sketch 기법만으로는 사실상 3D 가상공간에서 협업을 지원하기 어렵다. Sketch 기법을 협업에 적용한 기존의 연구들이 있지만 주로 3D 가상공간에 Sketch Annotation을 입력하는 것에만 중점을 두고, 입력된 Sketch가 담고 있는 내용을 잘 전달할 수 있는 지에 대해선 고려하지 못하였다. 따라서 평면이 아닌 객체에는 Sketch Annotation 입력이 불가능하거나, 입력되더라도 그 내용전달이 어려운 경우가 발생한다. 이 논문에서는 3차원 공간에서도 효과적으로 의사를 전달 할 수 있도록, 어떠한 형태의 면에 대해서도 Sketch Annotation의 내용이 정확히 전달될 수 있는 Sketch-Box를 이용한 Annotation기법을 연구한다.

• 한국CDE학회논문집
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• 제12권4호
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• pp.283-297
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• 2007

Seamless data integration in the CAx chain of the CAD/CAPP/CAM/CNC has been achieved to a high degree, but research concerning the transfer of data from conceptual sketches to a CAD system should be carried out further. This paper presents a method for reconstructing a 3D model from a freehand sketch. Sketch-based modeling research can be classified into gestural modeling methods and reconstructional modeling methods. This research involves the reconstructional modeling method. Here, Mitani's seminal work, designed for box-shaped 3D model using a predefined template, is improved by leveraging a relational template and specialized for automotive design. Matching between edge graphs of the relational template and the sketch is formulated and solved as the assignment problem using the feature vectors of the edges. Including the stroke preprocessing method required to generate an edge graph from a sketch, necessary procedures and relevant techniques for implementing the template-based modeling method are described. Examples from a working implementation are given.

• EDISON SW 활용 경진대회 논문집
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• 제5회(2016년)
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• pp.384-388
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• 2016

This paper proposed a m.Sketch to search the optimal link lengths for a legged walking robot. In order to apply the m.Sketch for the proposed, set the design parameters of the constraints and use the m.Skecth to get optimal GL(Groud Length) and GAC(Ground Angle Coefficient). The legged robot designed based on four-bar linkage theory and Theo Jansen mechanism. The stride length of the legged walking robot was defined based on the proposed kinematic analysis. Use the Edison Design m.Sketch simulate and find the optimal link length having the best of the Ground Length (GL) and Ground Angle Coefficient(GAC). And use these length implemented the Theo Jansen mechanism both in Science box parts and acrylic. In addition to the further expansion of the legs to reach the goaltranslating heavy objects or person.

• 건축역사연구
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• 제18권4호
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• pp.81-99
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• 2009

The study is on the analysis of Adalberto Libera's works, which are those of the competition works for international congress hall in 'E42'. I exerted a conclusion from analysis and studies of congress palace as well as informed data about architect Libera and uninformed original sketch of it. 1. Through analysis of original sketch data in possession of archives of paris Centre Pompidue and relevant sketch from the works, Libera adopts the modern architecture of Italy to the formalization process of concept as one of architectural methods. 2.In contrast to the way of elucidation of historicity of classicism architect, Libera's initial sketch is one of the traits from modernist's architectural concept process. Libera completes his architectural style to have developed new architecture vocabulary from 'Floating transparent box' which was result from intuition and imagination. 3 By comparing all the first plan, the second plan and constructed project, we can infer that Libera's plan was influenced by E42's classicism urban environment and masterplanner Piacentini. In addition, through historicity explanation method of modernist, it is adjudicated that the front side of facade with classism and the back side of facade with modern are partially accepted. 4. By analysing architectural concept's formalization process from original sketch of Congress palace, outstanding architect of Italian Fascism architecture, it provided new methods of architectural programming with the concrete examples.

• EDISON SW 활용 경진대회 논문집
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• 제5회(2016년)
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• pp.434-442
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• 2016

Jansen mechanism is composed of mechanical walking linkages that are designed and optimized by Theo Jansen in 1990. Although he has made optimum values for linkage dimensions for Jansen Mechanism, there are still various applications for this mechanism and also various optimum values for each application. In this paper, Jansen Mechanism optimization has been processed for the Science Box. The Science Box has its own linkage dimensions and related components and makes space for optimization process. For the optimization 3 to 4 linkage were selected which had no similar ratios of linkages between other applied Jansen mechanisms and to reduce experiment numbers. Response Surface Method was used with Minitab 17 for optimization and m.sketch was used for experimentation. Intuitive method had to be used to find optimum values as with RSM optimum value could not be found. EDISON Designer was used to make final CAD model with optimum values and laser cutter was used to get appropriate acryl panels for legs.

• EDISON SW 활용 경진대회 논문집
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• 제5회(2016년)
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• pp.485-488
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• 2016

In this paper, the mechanism that works by using eight legs is proposed. The walker has eleven bars instead of wheel, it shows a Biologically-inspired movement method. their driving appearance is very similar with creature which walks by its legs. For example, a crab and spider so on. This mechanism has simple style that can expand its size and attach more legs beside. For the competition regulation, we had to find working parts in the science box and some other things that can be found easily in the surroundings only usual material. The mission is making a machine that is enable to pass obstacle and to walk well. This paper followed the rules by regulation.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1998년도 봄 학술발표회논문집(II)
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• pp.415-420
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• 1998

In this paper, 2D SUB-3D STM approach for analysis and design of 3D structural concrete is presented. In the approach several 2D sub strut-tie models which are representations of compressive and tensile stress flows of each projected plane of 3D structural concrete are utilized in the sketch of a 3D strut-tie model, in the evaluation of effective strengths of compressive concrete struts, and in the verification of geometric compatibility and bearing capacity of critical nodal zones of 3D strut-tie model. To prove the validity and rationality of the suggested approach, the behavior and strength of a prestressed box girder diaphragm tested to failure are evaluated.

• EDISON SW 활용 경진대회 논문집
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• 제5회(2016년)
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• pp.397-403
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• 2016

Various walking robot platforms have been developed to carry out missions such as explorations, pass of obstacle or inspections of dangerous environments. In this work, a four legs mechanism based on Jansen mechanism is developed, which can follow a certain track and overcome obstacles. To find the ideal locus, computer programs are used such as M. sketch and Working model. Using these program tools, moderate linkage sizes are selected in Science Box. Furthermore, in order to optimize design of legs, a level average analysis is used as well as Edison S/W. Through the design optimization, improved stride of locus is found.