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.

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.

Programmable Controller와 Micro-Computer의 비교

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

포화 사질토에서 전방 차수층이 쉴드터널 초과 이수압에 미치는영향

이용준,이상덕,Lee, Yong-Jun,Lee, Sang-Duk 한국터널지하공간학회 2011 한국터널지하공간학회논문집 Vol.13 No.4

이수가압식 쉴드공법은 이수압을 적정 수준으로 관리하면 특히 사질토에서 적용성이 우수하지만, 이수압이 낮으면 이수 유출 및 지반변형이 발생하기도 한다. 따라서 이수가압식 쉴드공법에서는 초기 막장압보다 큰 초과 이수압을 가하여 막장의 안정을 유지한다. 그러나 이수압이 너무 높으면 전방 지반의 수동 파괴를 유발하므로 전방 지반의 수동 파괴 위험성을 배제하고 이수압을 증가시키는 방법으로 막장 전방에 수평 차수층을 설치하는 방안이 있으나 그 위치와 규모 및 효과가 잘 알려져 있지 않다. 따라서 본 연구에서는 포화된 사질토에서 막장 전방에 차수 그라우팅을 적용할 경우에 발생하는 효과를 규명하기 위하여 모형실험을 수행하였다. 실험에서는 차수층의 위치와 길이를 변화시거면서 이수의 유출이나 지반 파괴 이전까지 이수압을 가하여 최대 이수압과 지반 변위 및 이수의 유출로 인한 파괴 형상을 측정하여 분석하였다. 실험 결과, 전방 차수층이 없는 경우에 최대 이수압과 초과 이수압은 토피고에 선형비례 하였으며, 차수층이 존재하는 경우에는 차수층이 없는 경우보다 이수압을 크게 가할 수 있어서 전방 차수층이 막장 안정성을 증대시킬 수 있다는 것을 확인할 수 있었다. 막장 안정성 증대에 가장 큰 영향을 주는 적정 차수층의 규격은 길이 1.0 ~ 1.5D, 설치높이 1.0D로 나타났다. 초기 막장압 대비 최대 이수압의 비로 막장의 자립 안전율(F)을 제안할 수 있으며, 전방 차수층을 적정 위치에 설치할 경우 초기 막장압보다 3.5~4.0배 크게 이수압을 가할 수 있는 것으로 나타났다. Slurry type shield would be very effective for the tunnelling in a sandy ground, when the slurry pressure would be properly adjusted. Low slurry pressure could cause a tunnel face failure or a ground settlement in front of the tunnel face. Thus, the stability of tunnel face could be maintained by applying an excess slurry pressure that is larger than the active earth pressure. However, the slurry pressure should increase properly because an excessively high slurry pressure could cause the slurry flow out or the passive failure of the frontal ground. It is possible to apply the high slurry pressure without passive failure if a horizontal impermeable layer is located in the ground in front of the tunnel face, but its location, size, and effects are not clearly known yet. In this research, two-dimensional model tests were carried out in order to find out the effect of a horizontal impermeable layer for the slurry shield tunnelling in a saturated sandy ground. In tests slurry pressure was increased until the slurry flowed out of the ground surface or the ground fails. Location and dimension of the impermeable layer were varied. As results, the maximum and the excess slurry pressure in sandy ground were linearly proportional to the cover depth. Larger slurry pressure could be applied to increase the stability of the tunnel face when the impermeable layer was located in the ground above the crown in front of the tunnel face. The most effective length of the impermeable grouting layer was 1.0 ~ 1.5D, and the location was 1.0D above the crown level. The safety factor could be suggested as the ratio of the maximum slurry pressure to the active earth pressure at the tunnel face. It could also be suggested that the slurry pressure in the magnitude of 3.5 ~4.0 times larger than the active earth pressure at the initial tunnel face could be applied if the impermeable layer was constructed at the optimal location.

송(宋) "영조법식(營造法式)" 을 통해 본 목조건축(木造建築) 평면(平面) 척도구성(尺度構成)의 고찰(考察)

이용준,Lee, Yong-Jun 한국건축역사학회 2005 건축역사연구 Vol.14 No.3

In ancient times, architectural design was seen as a critical task in building technologies. Specifically, form, dimension and structural design are of significant. These aspects are associated with each other and to be emerged as a whole. Designing plan dimension was deemed to be the core of design technology due to its close relationship with module system. Thus, its evolution as well as development process typically represents and reflects the spirits and contents of design technologies in ancient China. In China, the materials regarding ancient architectural technology include Yingzaofashi(營造法式) of Song Dynasty and Gongchengzuofazeli(工程做法則例) of Qing Dynasty. They show many aspects concerning materials, structure, scale system and building. In Yingzaofashi, although the length of objects are decided by 'cai(材)' and 'fen(分)', there are no regulations on length, width and height of a building. However, in the construction of ancient buildings, the above mentioned basic scales are very important in both design and construction. The present paper attempts to discuss the significance, namely, the design principles of length, with and height of ancient chinese architecture.

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

다양한 토양수분 측정 방법 소개와 발전 방향

이용준,김기영,이연길,정재환,최민하,Lee, Yong-Jun,Kim, Gi-Yeong,Lee, Yeon-Gil,Jeong, Jae-Hwan,Choe, Min-Ha 한국수자원학회 2020 물과 미래(한국수자원학회지) Vol.53 No.10

스펙트럼 영역 빛간섭단층촬영 결과에 영향을 주는 다양한 인자 분석

이용준,Yong Jun Lee,MD 대한안과학회 2012 대한안과학회지 Vol.53 No.5

Purpose: To identify factors associated with variability in measures obtained by spectral domain optical coherence tomography (SD-OCT). Methods: One hundred ninety-six subjects (370 eyes) with no ophthalmic evidence of retinopathy and with corrected visual acuities better than 0.6 were included. Macular thickness and retinal nerve fiber layer (RNFL) thickness were measured using SD-OCT and were analyzed according to sex, laterality, age, spherical equivalent and signal strength. Results: The central subfield thickness was significantly lower in the female subjects (r = -0.260, p = 0.000). As age increased, average inner and outer macular thickness increased significantly (r = 0.153, p = 0.010; r = 0.193, p = 0.001). Spherical equivalent correlated negatively with central subfield thickness (r = -0.352, p = 0.000) but correlated positively with average inner macular thickness, average outer macular thickness, overall average thickness, overall macular volume, and average RNFL thickness (r = 0.181, p = 0.002; r = 0.287, p = 0.000; r = 0.346, p = 0.000; r = 0.341, p = 0.000; and r = 0.261, p = 0.000, respectively). Signal strength correlated negatively with average inner macular thickness (r = -0.136, p = 0.023). Conclusions: SD-OCT shows that retinal thickness is related to age, sex, spherical equivalent and signal strength. Analysis of retinal thickness by SD-OCT should be interpreted in the context of these findings. J Korean Ophthalmol Soc 2012;53(5):639-646

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

SWAT 모형을 이용한 미래 기후변화 및 토지이용 변화에 따른 안성천 유역 수문 - 수질 변화 분석 (II)

이용준,안소라,강부식,김성준,Lee, Yong Jun,An, So Ra,Kang, Boosik,Kim, Seong Joon 대한토목학회 2008 대한토목학회논문집 B Vol.28 No.6B

본 연구에서는 SWAT(Soil and Water Assessment Tool) 모형을 이용하여 (I)연구에서 기구축된 현재의 유역 수문환경 조건을 활용하여 미래수문환경에 따른 유역 수문-수질 변화 분석하는데 목적이 있다. 미래의 수문자료 중 기후변화 시나리오는 Downscaling된 GCMs 자료를 이용하였으며, 미래 토지이용 시나리오는 미래 토지이용 예측 기법인 개선된 CA-Markov 기법으로 분석하여 구축하였다. 그 결과 미래의 토지이용 시나리오에 따라 주거지와 나지 등의 도시지역의 꾸준한 증가와 산림과 농경지 등의 감소가 예측되었고 미래의 기후변화 경우 강우의 변동성이 커 현재보다 더욱 더 기후변화의 대응전략이 필요할 것으로 판단된다. 미래 토지이용 시나리오와 기후변화 시나리오를 결합한 미래의 수문환경을 30-40년 주기로 나누어 장기적인 미래의 특정기간에 대한 자료를 가지고 수문 변화 분석을 실시한 결과, 강우에 의해 양상이 변할 수 있으며 그에 따라 영양물질의 부하량 또한 Sediment는 120%, T-N은 16%, T-P는 10% 증가할 수 있는 것으로 분석되었다. 따라서 수문환경의 전반적인 변화에 따른 유출 영향의 평가가 필요하다고 판단되고 향후 수자원 분배와 물자원 관리와 기후변화 적응전략을 수립하는데 있어 본 연구가 도움이 될 것이라고 판단한다. This study is to assess the future potential climate and land use change impact on streamflow and stream water quality of the study watershed using the established model parameters (I). The CCCma (Canadian Centre for Climate Modelling and Analysis) CGCM2 (Canadian Global Coupled Model) based on IPCC SRES (Special Report Emission Scenarios) A2 and B2 scenarios were adopted for future climate condition, and the data were downscaled by Stochastic Spatio-Temporal Random Cascade Model technique. The future land use condition was predicted by using modified CA-Markov (Cellular Automata-Markov chain) technique with the past time series of Landsat satellite images. The model was applied for the future extreme precipitation cases of around 2030, 2060 and 2090. The predicted results showed that the runoff ratio increased 8% based on the 2005 precipitation (1160.1 mm) and runoff ratio (65%). Accordingly the Sediment, T-N and T-P also increased 120%, 16% and 10% respectively for the case of 50% precipitation increase. This research has the meaning in providing the methodological procedures for the evaluation of future potential climate and land use changes on watershed hydrology and stream water quality. This model result are expected to plan in advance for healthy and sustainable watershed management and countermeasures of climate change.