영동 산간지역 민가의 평면 변화에 관한 고찰 - 삼척시 미로면 고천리 마을을 대상으로 -

이용준,Lee, Yong-Jun 한국주거학회 2008 한국주거학회 논문집 Vol.19 No.5

This research considers the characteristics of the plan of the vernacular form of dwelling in KoCheon-Ri village, situated in the Yong-Dong mountain region. As part of this study, an analysis of local diversity is carried out. The current existing village houses in Kocheon-Ri can be categorized according to their floor structure, either as a wooden-floored or an Ondol-floored Kyup-jip(a double row house type). It was found that the wooden-flooded Kyup-jip house has been transformed into Ondol-floorded Kyup-jip due to a range of various factors. In order to clarify the characteristics of the vernacular dwelling type occurring in a particular area, it is important to determine the typical form that appears within the broader area. However, differences is also essential.

상부 구조물 하중의 영향을 받는 기존터널에 직각 교차하는 하부 터널의 종방향 아칭효과

이용준,이상덕,Lee, Yong-Jun,Lee, Sang-Duk 한국터널지하공간학회 2010 한국터널지하공간학회논문집 Vol.12 No.6

기존 터널 하부에 근접 교차하여 새로운 터널을 건설하는 경우에, 신설터널의 종방향 아칭이 기존 상부 터널의 간섭으로 인하여 영향을 받으나 이에 대한 연구는 많지 않다. 특히 기존터널의 상부에 존재하는 지상 구조물에 의한 영향을 연구한 경우는 찾아보기 힘들다. 따라서 본 연구에서는 기존터널 하부에 근접 교차하여 새로운 터널을 굴착하는 경우에, 기존터널과 하부 터널 막장의 상대적 위치에 따른 아칭현상과 지상구조물에 의한 영향을 실내모형실험을 실시하여 규명하고자 하였다. 이를 위하여 기존 원형터널 하부에서 신설터널 막장 위치를 변화시키면서 지중응력과 변위를 측정하였다. 또한, 지상 구조물의 위치에 따른 영향을 측정하였다. 연구 결과 상부 터널의 간섭에 의하여 하부 터널 종방향 응력전이가 영향을 받는 것을 알 수 있었으며, 하부 터널 굴착에 따른 종방향 아칭에 의해 상 하부 터널 사이에서 지반의 토압이 변하는 것을 확인하였다. 또한, 지상구조물의 위치가 막장과 일치하였을 때 종방향 아칭으로 인한 간섭이 가장 크게 측정되었다. In the ease that a new cross tunnel is constructed under the existing tunnel, development of a longitudinal arching would be influenced by the existing tunnel. But it is not enough to investigate. Especially, the influence of the structure loads on the ground surface on the new tunnel, which the under-passes existing tunnel has been rarely studied. This study, therefore, aimed to clarify the effect of the existing tunnel and the structure on the ground surface on the development of a longitudinal ground arching during the excavation of a cross tunnel under the existing tunnel. Two-dimensional model tests were carried out in the test box, whose dimension was 30 cm (wide) ${\times}$ 113 cm (deep) ${\times}$ 87 cm (high). The existing tunnel was made of S21 steel tube in 16 cm diameter and 1 mm thickness. The ground surface load was 4.9 kPa and was loaded on the model structure in the size with 30 cm width ${\times}$ 16 cm height. New tunnel was excavated in 250 mm height by a bench cut method. As results, the longitudinal arching would be developed but it was severely influenced by not only the existing upper tunnel but also the ground surface load. The influence of the ground surface load on the development of longitudinal ground arching around a new tunnel showed the highest value when the tunnel face located direct under the surface load.

Programmable Controller와 Micro-Computer의 비교

이용준,Lee, Yong-Jun 한국전자통신연구원 1984 전자통신 Vol.6 No.3

원추각막 진단에서 강화된 확장 표시방법의 유용성 평가

이용준,김선웅,Yong Jun Lee,Sun Woong Kim 대한안과학회 2010 대한안과학회지 Vol.51 No.5

Purpose: To estimate the utility of the enhanced ectasia display mode of Pentacam in discriminating keratoconus and keratoconus suspect from normal cornea. Methods: Corneal topography was measured using the Pentacam in keratoconus, keratoconus suspect and a normal control group. A best-fit sphere (BFS) and an enhanced best-fit sphere (EBFS) were used as reference surfaces for corneal elevation measurements, and measured values from both the anterior and posterior surfaces were compared among the three groups. Receiver operating characteristic (ROC) curves were used to identify the optimal posterior corneal elevation cutoff points for maximal sensitivity and specificity in discriminating keratoconus and keratoconus suspect from the normal control group. Results: Mean anterior and posterior corneal elevation were statistically higher in keratoconus than in keratoconus suspect and normal corneas. The optimal cutoff point of posterior elevation was 23 μm for the keratoconus group, and this value was associated with a sensitivity and a specificity of 96.7% and 98.6%, respectively for keratoconus. The optimal cutoff point of enhanced posterior elevation was 43 μm for the keratoconus group, and this value was associated with a sensitivity and a specificity of 96.7% and 95.5%, respectively. Conclusions: The enhanced ectasia display mode showed similar diagnostic power to that of the conventional elevation map, and the former could be more useful in a clinical setting due to the pronounced visualization of corneal elevation. J Korean Ophthalmol Soc 2010;51(5):651-657

The Effect of Recombinant Human Bone Morphogenetic Protein-2/Macroporous Biphasic Calcium Phosphate Block system on Bone Formation in Rat Calvarial Defects

이용준,정성원,채경준,조규성,김창성,Lee, Young-Jun,Jung, Sung-Won,Chae, Gyung-Joon,Cho, Kyoo-Sung,Kim, Chang-Sung The Korean Academy of Periodontoloy 2007 Journal of Periodontal & Implant Science Vol.37 No.2

골형성 유도 단백질(bone morphogenetic protein, BMP)은 성장이나, 골형성과정에서 중용한 역할을 한다고 입증되었고 그것의 운반체에 대한 연구가 이뤄져 왔다. 하지만 수직압이 존재하는 곳에서 골증대술에 적용할 수 있을 만큼 강한 공간유지능력이 있는 운반체에 대한 연구는 그리 많지 않았다. Macroporous biphasic calcium phosphate block (MBCP block)은 공간유지능력이 뛰어나며 강한 수직압을 견딜수 있는 골대체물질이다. 이 연구의 목적은 MBCP block을 골형성유도 단백질(rhBMP-2)의 운반체로 사용하여 백서 두개골 결손부에 적용하였을 때, 골 형성 효과를 평가하는 것이다. 36마리의 웅성백서에서 8mm 지름을 갖는 임계크기의 두 개부 결손을 형성하였다. 20마리씩 2개의 군으로 나누어 MBCP block만 이식한 군, MBCP block을 운반체로 사용하여 농도 0.025mg/ml rhBMP-2를 이식한 군으로 나누어 술 후 2주와 8주에 치유결과를 조직학적, 조직계측학적으로 비교 관찰 하였다. 조직계측학적 관찰 결과, rhBMP-2/MBCP block 군에서 MBCP block군에서 보다 2, 8주 모두 골밀도(bone density)가 유의성있게 증가하였다 (P<0.01). 각 군에서도 8주째가 2주째보다 골밀도가 유의성있게 증가하였다(P<0.01). 총조직 형성량 (augmented area)에서는 변화가 없었다. 이 연구 결과, 백서 두개골 결손부에서 MBCP block은 rhBMP의 운반체로 사용하였을 때 신생골 형성에 유의한 효과가 있을뿐 아니라 공간유지능력이 우수해서 수직압이 존재하는 골증대술(bone augmentation)시 rhBMP의 운반체로 가능성이 있다고 사료된다.

보 결구를 통해 본 중국 절강지역과 고려시기 목조건축과의 관계 - '차견(箚牽)'과 초방(草枋), '묘량(猫梁)'과 우미량(牛尾梁)을 중심으로 -

이용준,Lee, Yong-Jun 한국건축역사학회 2006 건축역사연구 Vol.15 No.4

Korea is closed to China in the geographical position and is related to China as two countries have developed similar culture, art, and social systems. Architecture is a kind of culture and has advanced in the wooden architecture with a considerable change. The study investigated a phylogenetic relationship between two countries based on characteristics of architectural universality. With comparison and analysis on the common feature and difference of the beam and structure in the wooden architecture from the Koryo and Zhejiang Province(China), the systemicity of the wooden architecture was examined. The beam is a part of timber which is consist of the wooden structure frame and also a crucial subject to understand a development process of the wooden architecture.

궤도차량 현수장치 고압용 시일의 피로마모 개선 연구

이용준,김형현,김경로,구융서,Lee, Yongjun,Kim, Hyeonghyeon,Kim, Kyungro,Koo, Yungseo 한국군사과학기술학회 2017 한국군사과학기술학회지 Vol.20 No.1

In this paper, causes of wear on high pressure seals for suspension are analyzed, and the result of reproduction test and verification on improved design are described. First, by performing the observation of worn surfaces and its failure analysis, the primary cause of wear on the seals are analyzed. The result of analysis shows that the main failure mechanism of wear is a fatigue wear, and test criteria for failure reproduction are set up with consideration for frequency condition, surface roughness and pressure. Durability comparison test on the condition of low amplitude and high frequency is carried out. And, it is found that the durability of wear on seals by increasing hardness of cylinder and managing for surface roughness is enhanced.

학술논문-e-Book콘텐츠 수익구조

이용준,Lee, Yong-Jun 대한인쇄문화협회 2006 프린팅코리아 Vol.45 No.-

한동안 인쇄-출판계의 관심에서 멀어졌던 e-Book이 새롭게 각광을 받고 있다. 시장규모가 점차 커지고 e-Book 콘텐츠의 숫자도 대폭 늘어나고 있다. 하지만 이러한 시장의 외형적인 성장에도 불구하고 e-Book 산업은 아직까지 견실한 수익구조를 제대로 갖추지 못하고 있는 상황이다. 지금까지의 전자책 회사의 수익구조는 B2C와 B2B에 의존하는 단순한 수익모델을 가지고 있었다. 그러나 최근 출판 및 학계를 중심으로 우리나라 e-Book 산업의 수익구조 개선방안을 모색하기 위한 다각적인 연구가 활발히 진행되고 있다. 다음은 지난 해 한국출판연구소가 주최한 '2005 한국출판평론.학술상'공모에서 출판학술상을 수상한 이용준 교수의 논문을 발췌,요약한 것이다.

당뇨황반부종의 치료: 비교 연구

이용준,최경식,이성진,Yong Jun Lee,MD,Kyung Seek Choi,MD,PhD,Sung Jin Lee,MD,PhD 대한안과학회 2010 대한안과학회지 Vol.51 No.6

Purpose: To compare the effect and complications of treatments for diabetic macular edema. Methods: Literature review using the Korean medical database and the Korean Ophthalmological Society database was performed. Studies used consisted of patients with diabetic macular edema, comparing intravitreal triamcinolone acetonide (IVTA) injection with posterior subtenon triamcinolone acetonide (STTA) injection or intravitreal bevacizumab (IVB) injection, according to visual acuity (VA) outcomes, central macular thickness (CMT), and intraocular pressure (IOP) at 1, 3, and 6 months. Results: In the three studies comparing IVTA injection with STTA injection, IVTA injection demonstrated greater improvement in VA at 1 month and CMT at 6 months. The patients who received IVTA injection had significantly higher IOP at 3 months. In the three studies comparing IVTA injection with IVB injection, IVTA injection demonstrated greater improvement in VA at 3 months and CMT at 6 months. Conclusions: The functional and anatomical improvements are achieved by IVTA injection, STTA injection, and IVB injection for diabetic macular edema, and the effect of IVTA injection is more prominent than other injection types with longer duration. J Korean Ophthalmol Soc 2010;51(6):849-859

송(宋) 《영조법식(營造法式)》 중 월량(月梁) 보머리 가공 규범에 대한 고찰

이용준,Lee, Yong-Jun 한국농촌건축학회 2019 농촌건축 : 한국농촌건축학회논문집 Vol.21 No.3

Woolyang(月梁) is a beam which whole shape is curved like a so-called moon(月). According to the ${\ll}$Yeongjobeosig(營造法式)${\gg}$, In the case of beams installed under the ceiling of a wooden building, it is used by manufacturing them in Woolyang(月梁) for maximum visual decorative effects as the shape is exposed. In order to achieve the end of a beam that is manufacturing in Woolyang(月梁), it is important to process it in a suitable size and shape for a given situation to achieve a combination with other members around it. However, in the "營造法式", the standard of production of the Woolyang(月梁) is divided into Myeongbog(明?), Chagyeon(箚牽), Pyeonglyang(平梁), and the height of each beam head is divided into 21分$^{\circ}$, 15分$^{\circ}$, 25分$^{\circ}$, but it is not possible to look at any more specific reference. In this paper, try to consider the principle of Woolyang(月梁) manufacturing and its normative contents which were indirectly proposed in the ${\ll}$Yeongjobeosig(營造法式)${\gg}$.