2+1차로 도로의 국내도입방안 및 88고속도로 적용사례

이성준,허용,진규동,정준화,이동민,이석기,Lee, Seong-Jun,Heo, Yong,Jin, Gyu-Dong,Jeong, Jun-Hwa,Lee, Dong-Min,Lee, Seok-Gi 한국도로학회 2009 도로 : 도로학회지 Vol.11 No.3

항타말뚝과 비교한 현장타설말뚝의 지지력분석

이성준,정상섬,김수일,Lee, Seong-Jun,Jeong, Sang-Seom,Kim, Su-Il 한국지반공학회 1997 지반 : 한국지반공학회지 Vol.13 No.5

본 연구에서는 항타말뚝과 비교한 현장타설말뚝의 극한지지력을 하중전이함수를 적용하여 예측하였으며 이를 토대로 항타말뚝과 비교한 현장타설말뚝의 지지력을 현장재하시험 결과와 비교, 분석하였다. 비교, 분석은 하중전이함수들 중 응력 연화를 고려한 방법, 쌍곡선 함수법 및 탄소성 방법을 대표하는 Vijayvergiya의 방법, Castelli의 방법 및 2중 직선법을 적용하여 지반 종류에 따라 현장타설말뚝의 하중-변위관계를 산정하였다. 본 연구 결과 동일한 지반에 설치된 항타말뚝과 현장타설말뚝의 극한지지력은 총 주면마찰력의 차이로 인하여 항타말뚝이 더 큰 것으로 나타났으며 이러한 차이는 점토질 지반에서 보다는 모래질 지반에서 더 크게 나타났다. 같은 지지력을 발현하기 위해 필요한 말뚝 두부에서의 변위량은 항타말뚝보다는 현장타설말뚝에서 더 크게 나타났으며 현장타설말뚝이 극한지지력을 발현하기 위해 필요한 변위량과 이와 같은 크기의 지지력을 발현하는데 필요한 항타말뚝의 변위량과의 차이는 모래질 지반에서 가장 크게 나타났다. 현장타설말뚝과 항타말뚝의 말뚝직경과 길이의 비(LID)의 변화에 따른 극한지지력의 차이는 점토질 지반의 경우 일정한 것으로 나타났으나 모래질 지반에서는 LID의 비가 증가할수록 극한지지력의 차이가 증가하는 것으로 나타났다. In this study an iterative procedure for the analysis of drilled shafts was proposed on the basis of the load transfer mechanism. Special attention was given to the estimation of bearing capacity of drilled shafts which was compared with driven piles, and then with the results of pile load test. The load displacement at the pile head was calculated by load than sfer curves (t -z curves, q-z curves) by using Vljayvergiya, Castelli and hi -linear models. Bab ed on the analytical results, it is found that the behavior of drilled shafts is different from that of driven piles the smaller the skin friction mobilized at the pile-boil interface, the smaller the development of the bearing capacity. Hence the greater pile head movement is required to mobilize the same mainitride of bearing capacity. This trend is more noticeable in sand than in clay. It is also found that as the length-todiameter ratios increase, the dirtference of ultimate bearing capacity between drilled shafts and driven piles is becoming lass ger in sand, but it is minor in clay.

계지가갈근탕(桂枝加葛根湯)을 투여한 이명 증례 1례

이성준,허주,Lee, Sung-Jun,Heo, Joo 대한상한금궤의학회 2015 대한상한금궤의학회지 Vol.7 No.1

Objective : This study is aimed to report the outcomes of the treatment of a patient with tinnitus during 6 month. Methods : Basic patient's data was analyzed as a CARE guideline. And related symptom was measured with VAS. Results : The symptom of tinnitus reduced from 10 to 2 on VAS. And the symptom of feeling cold get lower. Conclusions : Gyejigagalgeun-tang improved the symptom of tinnitus on this study.

Primary neurocritical care involving therapeutic hypothermia for acute ischemic stroke patients with malignant infarct cores

이성준,Kyu Sun Lee,Jin Soo Lee,최문희,이성은,홍지만 대한신경집중치료학회 2019 대한신경집중치료학회지 Vol.12 No.1

Background: Acute ischemic stroke patients with malignant infarct cores were primarily treated with neurocritical care based on reperfusion and hypothermia. We evaluated the predictors for malignant progression and functional outcomes. Methods: From January 2010 to March 2015 ischemic stroke patients with large vessel occlusion of the anterior circulation with infarct volume >82 mL on baseline diffusion weighted image (DWI) within 6 hours from onset, with National Institutes of Health Stroke Scale ≥15 were included. All patients were managed with intent for reperfusion and neurocritical care. Malignant progression was defined as clinical signs of progressive herniation. Predictive factors for malignant progression and outcomes of decompressive hemicraniectomy (DHC) were evaluated. Results: In total, 49 patients were included in the study. Among them, 33 (67.3%) could be managed with neurocritical care and malignant progression was observed in the remainder. Decompressive surgery was performed in nine patients (18.4%). Factors predictive of malignant progression were initial DWI volumes (odds ratio [OR], 1.01; 95% confidence interval [CI], 1.00 to 1.02; P=0.046) and parenchymal hematoma (OR, 6.77; 95% CI, 1.50 to 30.53; P=0.013) on computed tomography taken at Day 1. Infarct volume of >210 mL predicted malignant progression with 56.3% sensitivity and 90.9% specificity. Among the malignant progressors, 77.7% resulted in grave outcomes even with DHC, while all patients who declined surgery died. Conclusion: Acute ischemic stroke patients with malignant cores between 82 to 209 mL can be primarily treated with neurocritical care based on reperfusion and hypothermia with feasible results. In patients undergoing surgical decompression due to malignant progression, the functional outcomes were not satisfactory.

유전체 다층 거울이 유기발광다이오드의 광효율 향상에 미치는 영향에 관한 광학 시뮬레이션 연구

이성준,고재현,Lee, Sung-Jun,Ko, Jae-Hyeon 한국광학회 2015 한국광학회지 Vol.26 No.3

본 논문에서는 유전체 다층 거울을 이용해 구성된 파브리-페롯 미소공진 구조가 유기발광다이오드(OLED)의 광효율에 미치는 영향을 유한차분 시간영역법과 광선추적법을 결합해 분석하였다. SiN과 $SiO_2$ 층을 교대로 쌓아 구성한 유전체 다층박막의 적용은 미소공진 효과를 강화시켜 OLED의 발광 스펙트럼의 협소화를 유도하였고 광추출효율도 수 % 증가하였다. 유전체 다층박막의 두께를 최적화함으로써 특정 파장에 대해 미소공진 효과를 일으킬 수 있었고 이는 OLED 발광색의 순도를 증가시키는데 활용될 수 있다. 광추출효율을 극대화하는 전자수송층의 최적 두께는 발광파장에 따라 달라졌는데, 이는 유기층 물질이 보이는 굴절률의 분산 때문인 것으로 생각된다. The effects of a dielectric multilayer mirror on the efficiency of organic light-emitting diodes (OLEDs) were investigated by using optical simulation. Adoption of a dielectric mirror consisting of alternating SiN and $SiO_2$ layers narrowed the emission spectrum due to the microcavity effect, and increased the outcoupling efficiency by a few percent. The layer thicknesses of the dielectric mirror were adjusted to change the wavelength of the resonance mode, which may be used to increase the color purity.

이동통신 주파수 핵심 우량대역에 관한 탐색 연구

이성준,한성수,Lee, Seong-Jun,Han, Sung-Soo 한국디지털정책학회 2014 디지털융복합연구 Vol.12 No.12

이동통신 서비스 제공을 위한 필수적인 요소자원인 주파수는 그 대역의 특성에 따라 사업자의 서비스 제공 경쟁력을 크게 좌우할 수 있다. 이에 본 연구에서는 주파수 자원에서도 상대적으로 우수한 특성을 가져 서비스 제공 상 우위를 가지며 경쟁정책적인 관리가 필요한 이동통신 주파수 대역을 핵심 우량대역이라고 정의한다. 이를 위해서 기술적 특성이 아닌 시장상황을 고려한 주파수의 활용성 및 경제적 효율성 측면의 4가지 기준(글로벌소싱 및 호환성, 비용-효율성, 주파수 활용 경험, 현재의 활용가능성)을 수립하였다. 이러한 기준들을 순차적으로 적용하여, 우량 주파수 대역 후보들을 추출하고 단계적인 평가기준을 통해서 현재시점에서의 최종적인 핵심 우량대역을 식별하였다. 또한 이러한 결과는 기술의 발전과 시간의 흐름에 따라 변화하는 특성을 보여준다. 본 연구의 분석결과는 이동통신 주파수에 대한 경쟁관리정책뿐만 아니라 할당정책에도 논리적 근거로 활용될 수 있는 실용적 의의를 지닌다. The characteristics of the spectrum, which are necessary for mobile telecommunication services, may determine the advantage of operators' competition for mobile services. We have a focus on the possibility that there would be the core spectrum within the frequencies. We define the core spectrum of frequencies in terms of 4 criteria (global source/roaming, cost-effectiveness, the experience of utilization and the possibility of use). They are based on the aspects of applicative and economic effectiveness by not technological and but market conditions. We have explored the current core spectrum by using the stepwise selection from these criteria. Our result indicates that the core spectrum may be movable with the development of technology and the flow of time. The results of this paper could be practically used as the reasonable justifications of the policies for not only the competition management but also the alignment about the frequencies for mobile telecommunication.

"도로의 구조.시설 기준에 관한 규칙" 개정 소개

이성준,허용,남영국,최동식,Lee, Seong-Jun,Heo, Yong,Nam, Yeong-Guk,Choi, Dong-Sik 한국도로학회 2009 도로 : 도로학회지 Vol.11 No.2

한국재래산양 골성골반계측에 대한 해부학적 연구

이성준,이흥식,강태천,Yi, Seong-joon,Lee, Heungshik S,Kang, Tae-cheon 대한수의학회 1995 大韓獸醫學會誌 Vol.35 No.3

This study was carried out to observe the differences of bony pelvis between male and female Korean native goat by the pelvimetry. The results represented that the middle transverse diameter(1:1.35), ventral transverse diameter(1:1.12), transverse diameter of pelvic outlet(1:1.22), right oblique diameter(1:1.09), the width between ruber ischii(1:1.15) and width of pubis(1:1.11) were shown significant differences(p<0.01) between male and female Korean native goat.

대형 운행 경유 자동차 자연재생DPF 재생 개선을 위한 정비방안 마련 연구

이성준,한검승,하성용,Lee, Sungjun,Han, Geomseung,Ha, Sungyong 한국자동차안전학회 2021 자동차안전학회지 Vol.13 No.3

Diesel engines emit PM and NOx during combustion. This is the main culprit of fine dust, which seriously affects the atmospheric environment. In particular, large-sized diesel vehicles over 3.5 tons emit a greater amount of pollutants because of their large displacement. The occurrence of vehicle abnormalities in this large-scale diesel vehicle causes even greater problems in the atmospheric environment. It was confirmed that there were many problems caused by natural regeneration DPF among large-sized diesel vehicles. Therefore, the most effective maintenance plan is suggested.

양명병(陽明病) 인진호탕(茵蔯蒿湯)으로 호전된 유두 습진 1례

이성준,이자복,Lee, Sung-Jun,Lee, Ja-Bok 대한상한금궤의학회 2014 대한상한금궤의학회지 Vol.6 No.1

Objective : This study aims to explain the effect of Injinho-tang on Eczema which a Yangmyung-byeong patient has. Methods : This is a case report on a female patient who has been suffering from Eczema. According to Diagnostic system based on Shanghanlun provisions, Injinho-tang was provided for six months. Results : After a series of Injinho-tang treatments, the patient's symptoms and result improved. Conclusions : This case study showed an effectiveness of using Injinho-tang according to Diagnostic system based on Shanghanlun provisions on Eczema.