• Journal of Korea Multimedia Society
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• v.10 no.3
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• pp.303-315
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• 2007

This paper proposes a 3D structure recovery and registration method that uses four or more common points. For each frame of a given video, a partial structure is recovered using tracked points. The 3D coordinates, camera positions and camera directions are computed at once by our improved scaled orthographic factorization method. The partially recovered point sets are parts of a whole model. A registration of point sets makes the complete shape. The recovered subsets are integrated by transforming each coordinate system of the local point subset into a common basis coordinate system. The process of shape recovery and integration is performed uniformly and linearly without any nonlinear iterative process and without loss of accuracy. The execution time for the integration is significantly reduced relative to the conventional ICP method. Due to the fast recovery and registration framework, our shape recovery scheme is applicable to various interactive video applications. The processing time per frame is under 0.01 seconds in most cases and the integration error is under 0.1mm on average.

• Journal of the Korea Convergence Society
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• v.8 no.7
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• pp.219-224
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• 2017

This paper investigates equivalent stress and deformation happening at inner fiber structure when the tensile force acts on the specimen with arch type composed of carbon fiber. The countless many each fiber is applied on the unidirectional axis at CFRP and has the high specific strength and stiffness by comparing with iron. In this study, the distribution of stress due to radius is investigated at the structure of arch type composed with the optimum stacking angle of $60^{\circ}$. And the durability is seen to be lower as the radius increases at the same stacking angle. By applying the result of this study to the design of structure with arch type, it can be devoted to the safe design for the prevention of damage and the durabilty improvement. And it is possible to be grafted onto the convergence technique at the designed factor and show the esthetic sense.

• Journal of the Korea Convergence Society
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• v.10 no.11
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• pp.181-188
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• 2019

The purpose of this study is to implement the convergence thinking in problem-based learning (PBL) on paramedic education. PBL scenario course was conducted for 78 students in the third year of emergency medical technology during the first semester of 15 weeks in 2017. After 15 weeks, data of 73 students were analyzed. Among questions about learning interest in PBL, 'neutral' was the most frequent response with 38% for "PBL scenario classes were more effective in learning and acquiring knowledge than lecture class". For "The lessons learned in the class helped to improve the ability to come up with appropriate solutions for problem solving", 57.5% responded 'agree', and for "The lessons learned in the class helped with confidence in the emergency scene", 50.7% responded 'agree'. PBL will be an effective and efficient way of teaching as a learning curriculum for understanding the field situation.

• Journal of the Korea Convergence Society
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• v.10 no.7
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• pp.149-154
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• 2019

This paper is to study the durability through structural analysis on the front undercover of SUV car for offroad. It was investigated which model became structurally best by analyzing three kinds of models which are similar to the configuration of undercover for the protection of the part under car body which has been used really. The models of undercover were designed through CATIA program and analyzed by using ANSYS program as three kinds of models A, B and C. Through the analysis results, model B was expressed to have the best durability as model B has the least equivalent stress and the longest fatigue life among three models. As the design data with the durability of undercover obtained on the basis of this study result are utilized, the esthetic sense can be shown by being grafted onto the machine or structure at real life.

• Journal of the Korea Convergence Society
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• v.11 no.12
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• pp.155-159
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• 2020

In this study, the structural analyses were performed on the number of leaf springs in large truck. The deformations were small for all four models. The maximum stress of model A was found to be the largest, and that of model D was the smallest. Model A was seen about 1.87 times larger than model D and about 1.52 times larger than model B. The maximum stresses of models C and D were seen to be less. In terms of the effect to reinforce one more overlapping spring, The effect of the enhancement of the strength of model D was shown to be small by comparing with model C. Therefore, model C with three overlapping springs is thought to be efficient in design and good in strength. The structural strength of leaf spring can be evaluated by applying this study result to the leaf spring at large truck. And it is seen that the result can be the design of the leaf spring with durability at large truck and the aesthetic convergence.

• Electronics and Telecommunications Trends
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• v.23 no.2 s.110
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• pp.46-55
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• 2008

융합환경 하에서 새로운 기술과 서비스의 제공이 가능해지고 차세대 네트워크의 투자가 확대되면서 미래 통신시장에서 유선부문 지배적 사업자의 시장지배력이 전이될 가능성이 높아지고 있다. 이러한 통신시장의 환경변화에 대응하여 영국, 이탈리아, 스웨덴, 아일랜드 등 유럽의 많은 국가가 구조분리를 추진하였거나 진행중에 있다. 또한 EU는 2007년 11월 통신법 개정안을 통해 EU 27개 회원국 규제기관에 영국식 기능분리 권고안을 제안하였고, 개별 회원국의 찬성을 전제로 2009년 구조분리가 현실화 될 예정이다. 특히 EU의 통신법 개정안은 기존 병목설비에 적용되던 필수성과 독점성의 원칙을 상당히 탄력적이고 포괄적으로 해석하고 있다. 또한 유선시장의 경쟁 상황이 점차 개선되고 있음에도 구조분리를 강력하게 추진하고 있다. 이처럼 컨버전스 환경에 대비한 EU 및 유럽 각국의 강력한 구조분리 추진현황은 유선시장의 경쟁이 활발하지 않고, 구조분리 논의가 필수설비의 필수성과 독점성의 원칙에서 진전되지 못하고 있는 우리나라의 유선시장에 많은 시사점을 제시하고 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.5
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• pp.2150-2156
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• 2013

This study attempts to identify how the value network of mobile industry has evolved in the value creating process. The longitudinal case study on SK Telecom was conducted by measuring the SK Telecom's investment structure during from 1999 to 2008. Results show that the convergence services based on the advanced mobile networks changed the revenue structure, and enabled SK Telecom to reposition as a media company. For the value creation, SK Telecom's value network has flexibly adapted to convergence environment through dynamic asset reconfiguration.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2014.10a
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• pp.109-127
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• 2014

• Electrical & Electronic Materials
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• v.34 no.4
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• pp.24-35
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• 2021

• Journal of Korean Association for Spatial Structures
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• v.21 no.4
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• pp.4-9
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• 2021