이하선에 발생한 소관 선종

신동우,정웅윤,심정연,박정수,Shin Dong-Woo,Chung Woung-Youn,Shim Jeong-Yun,Park Cheong-Soo 대한두경부종양학회 1997 대한두경부 종양학회지 Vol.13 No.2

Parotid canalicular adenoma is a benign neoplasm that is predominantly composed of branching and interconnecting cords of single or double rows of columnar epithelium in a very loose stroma. There has been considerable confusion in the literature concerning the terminology of canalicular adenoma. However, thesedays it has been newly-recognized as a discrete entity of the monomorphic adenoma group. Canalicular adenoma has a remarkable predilection for occurrence in the minor salivary glands such as the upper lip, in contrast with basal cell adenoma that occurs predominantly in major salivary glands such as the parotid gland. We have experienced a case of canalicular adenoma of the parotid gland in a 65-year-old woman. The patient had a palpable mass on the preauricular area for the last 15 years and recently noticed a mild pain and discomfort on the mass. Neck ultrasonography showed a low echogenic mass of 1.0cm in diameter in the right parotid gland and a neck CT scan showed a well-enhanced rectangular-shaped mass. A superficial parotidectomy was performed for the lesion and the final pathologic diagnosis turned out to be 'multifocal canalicular adenoma'.

탄소-아라미드 복합소재 로봇암의 진동감쇠 물성시험과 전산해석

신동우,권일준,박성민,박용민,최진경,Shin, Dong-Woo,Kwon, Il-Jun,Park, Sung-Min,Park, Yong-Min,Choi, Jin-Kyung 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.6

In accordance with the increase in demand for LCDs and the increasing industry competition with higher productivity, the size of LCD glass has been gradually increasing. When transferring a robot hand by setting up an LCD panel, the vibration increases the inertia and load of up and down motion, rotational motion, and mobile motion of the whole robot. With regards to the up and down motion of the robot hand, when time is short on study of the vibration reduction. In this paper, we evaluate the structural arm of an LCD robot by using finite element analysis and fast Fourier transform (FFT). An impact test of the arm, which is made from the composite materials of carbon fiber reinforced plastics (CFRP) and Kevlar fiber reinforced plastics (KFRP) for lightweight and damping, was conducted.

조기 위암의 근치적 절제술 후 재발예측인자

신동우,형우진,노성훈,민진식,Shin Dong Woo,Hyung Woo Jin,Noh Sung Hoon,Min Jin Sik 대한위암학회 2001 대한위암학회지 Vol.1 No.2

Purpose: Even with excellent surgical outcome, recurrence of early gastric cancer (EGC) after a curative resection is not declining because the incidence of EGC is increasing. The aim of this study was to propose an appropriate treatment strategy by assessing the risk factors for recurrence of curatively resected early gastric cancer. Materials and Methods: Of 3662 patients who had undergone gastric resections for gastric cancer from 1987 to 1996, the cases of 1050 curatively resected EGC patients were reviewed retrospectively. Among those 1050 patients, 50 patients ($4.8\%$) were diagnosed as having recurrent cancer, which was confirmed by clinico-radiological examination or re-operation. The risk factors that determined the recurrence patterns were investigated by using univariate and multivariate analyses. Results: The mean time to recurrence was 30.9 months, and hematogenous recurrence was the most frequent type ($32.0\%$). Among the 50 recurred patients, peritoneal recurrence showed the shortest mean time to recurrence ($18.5\pm17.7$months). Between the recurred and the non-recurred patients, there was no statistically significant difference with respect to age, sex, operation type, tumor size, tumor location, gross appearance, or histological differentiation. However, depth of invasion (submucosal invasion) and nodal involvement were significantly different (P<0.001) between the two groups. Using logistic regression analyses, nodal involvement was the only significant risk factor for recurrence in early gastric cancer (P<0.001). The median survival after the recurrence had been diagnosed was 4 months. Conclusion: Although the prognosis for EGC patients is excellent and recurrence of EGC after a curative resection is rare, the time to recurrence and the patterns of recurrence in EGC patients were diverse and unpredictable, and the result after recurrence is dismal. Considering the impact of lymph node metastasis on recurrence of EGC, a systematic lymphadenectomy, rather than limited surgery, should be performed if lymph node involvement is confirmed pre- or intraoperatively. Also if the postoperative pathologic findings reveal lymph node involvement, adjuvant chemotherapy is recommended.

국내 SOC 사업의 기획업무 개선에 관한 연구

신동우,김예상,Shin Dongwoo,Kim Yea-Sang 한국건설관리학회 2000 한국건설관리학회 논문집 Vol.1 No.1

국내의 SOC 사업은 그 기획단계에서 업무 추진의 근거가 될 수 있는 업무 절차와 의사결정의 기준 등이 미비하거나 표준화되지 못한 상태에서 추진되고 있으며, 이로 인하여 사업수행 과정에서 여러 가지 시행착오를 겪고 있는 것이 현실이다. 따라서 SOC사업의 기획업무 과정에서 모든 사업목표와 관리대상에 대한통합관리의 기능을 수행할 수 있는 정형화된 절차 모델의 개발이 필요하며, 본 연구는 SOC사업의 기획업무 개선을 위한 기획관리 모델 개발의 기반을 구축하는데 그 목적을 두었다 모델 개발의 적용범위는 도로, 철도, 공항, 항만을 포함하는 교통시설로 한정하였고 주요 연구결과로서, 현행 SOC 사업의 문제점 제시와 함께 기획단계의 업무 프로세스, 각 단계별 중점 고려사항, 기획업무 개선을 위한 핵심적 개선방향을 SOC사업 기획관리 모델 개발의 기반으로 제시하였다. In Korea, demand for the Social Overhead Capital(SOC) projects has tremendously increased since 1970's and is expected to keep growing to support national economic development as well as to enhance the quality of life. In these projects, project planning and feasibility study phase is one of the most critical phases because it determines the success of later phases. However, we have experienced trial and errors repeatedly such as cost overruns and schedule delays in many of the SOC projects. These problems can be prevented or at least expected in the earlier phase and it requires well-developed and standardized project planning process and systems before design, procurement, and construction phases begin. Therefore, the purpose of this research is to investigate current problems in this phase and provide framework for a model for the project planning management which can be used for the SOC projects to insure the whole project success.

이종소재인 CFRP와 알루미늄의 접착력 향상을 위한 Bead의 영향 평가

신동우,김진재,이종혁,권일준,박성민,Shin, Dong-Woo,Kim, Jin-Jae,Lee, Jong-Hyuk,Kwon, Il-Jun,Park, Sung-Min 한국복합재료학회 2017 Composites research Vol.30 No.4

In this paper, we investigated the application method and properties of 0.1 mm, 0.2 mm and 0.3 mm beads, which can secure a certain thickness due to the molding stability of joint surfaces of different materials (aluminum and composite). In order to verify this, the influence was evaluated according to the thickness of the adhesive in the Double lap test and the FEM simulation. As a result, it was confirmed that as the content of the bead of the adhesive increased more than 1%, the strength of the adhesion increased and the elongation decreased. We confirmed as the size of the bead became larger, the rigidity became lower and the elongation increased. 본 논문에서는 알루미늄과 복합재료에 대한 이종소재 접합면의 성형안전성을 위해 일정한 두께를 확보할 수 있는 0.1 mm, 0.2 mm, 0.3 mm bead의 적용 방법과 물성변화에 대해 연구하였고, 이를 검증하기 위해 더블랩 시험과 FEM 시뮬레이션으로 접착제의 두께에 따라 미치는 영향을 평가하였다. 그 결과, 접착제에 bead의 양을 1% 이상 함량이 증가함에 따라 접착 소재의 강도가 높아지고 신율이 감소함을 확인하였고, bead의 크기가 커질수록, 강성은 낮아지고, 신율은 증가함을 확인하였다.

신체 부위에 따른 지방조직의 특성: 컴퓨터단층촬영 및 조직학적 소견

신동우,손대구,박무식,김준형,한기환,Shin, Dong-Woo,Son, Dae-Gu,Park, Mu-Shik,Kim, Jun-Hyung,Han, Ki-Hwan 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.5

Purpose: The subcutaneous fat tissue is separated into 2 layers by the subcutaneous fascia: the superficial and deep fat layers. The two fat layers have different structures according to the body regions. The purpose of this study is to evaluate the distribution and pattern of the two fat layers in the human body by computed tomography (CT) and histological analysis according to age, sex, anatomical region, and body mass index (BMI). Methods: This study included 200 males and 200 females who underwent 64-channel dynamic CT in our hospital. The patients were divided into 5 groups according to 10 years of their ages separately in either male or female gender. The thickness of the superficial and deep fat layers was measured in the abdominal, pelvic, and femoral regions, and we analyzed the values. Statistical analyses were performed using SPSS software. The $3{\times}3$-cm whole fat layers were harvested from the same sites of 3 cadavers for histological examination, and one cadaver was dissected for gross evaluation. Results: The total thickness of subcutaneous fat tissue was greater in females than in males, and the ratio of the superficial fat layer to the whole fat layer was higher in females. The superficial fat layer became thinner with increasing age in males. As BMI increased, the total fat layer became thicker, and the superficial fat layer became thicker than the deep fat layer. On histological examination, the superficial fat layer had small adipose lobules and showed a densely distributed pattern in the abdominal region, whereas in the femoral region, it had large adipose lobules and showed a sparsely distributed pattern. There were no significant differences in the histological findings of the deep fat layer between the 3 body regions. Conclusion: Significant differences in histological findings of the two fat layers were found in relation to age, sex, anatomical region, and BMI. The superficial fat layer became thinner with increasing age in males, but it was constant in females. As BMI increased, the total thickness of subcutaneous fat tissue became greater, and the superficial fat layer became thicker than the deep fat layer. Our measurements can be used to understand the characteristics of the fat layers in relation to age, sex, anatomical region, and BMI.

상용차 독립현가식 너클의 진동시험 및 해석에 관한 연구

신동우(Dongwoo Shin),김태준(Taejun KIM),권상석(Sangsuk Kweon) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5

기존에 사용되는 Rigid Axle에 적용되는 King Pin 방식의 Knuckle의 개요를 나타내며 차량 좌우 방향으로 연결된 Rigid 타입의 Front Axle 양쪽 끝단에 Knuckle이 King Pin으로 연결되어 차체를 지지하는 방식이며, 차량의 좌우가 연동되어 작동을 하므로 승차감, 진동, 직진성 등 불리한 조건을 가지고 있으나 기존에는 트럭 또는 버스의 특성으로 불편함을 감안하고 적용되고 있는 방식이다. 독립현가 방식은 차량의 좌우가 동시에 움직이는 Rigid 방식에 비해 좌우가 독립적으로 작동함으로써 승용차에 비해 비포장도로 및 공사장 등 안좋은 도로조건에서 승차감을 향상할 수 있는 방식이다. 상용차의 주행 특성 상 승용차보다 많은 시간을 운전하게 되고 도로조건 또한 비포장로, 공사장 등 험로를 주행하는 운행 조건이 더 많은 주행조건을 가지고 있으므로 과거와 같은 Rigid 방식으로는 한계를 가지고 있다. 트럭과 버스에 적용토록 재료의 강도를 높이고 제품의 신뢰성 확보를 위해 수요처에서 요구하는 내구수명을 가지도록 개발 하고자 하는 제품이다. 따라서, 본 연구에서는 설계된 너클에 대한 시제품의 모달테스트를 통하여 모드 쉐입을 구하고, 진동해석 결과와 비교하여 제품의 건전성에 대하여 연구하였다.

실내 이동 객체의 초정밀 위치 측정을 위한 실시간 시스템의 설계 및 구현

신동우(Dongwoo Shin),김태훈(Taehoon Kim),탁성우(Sungwoo Tak) 한국멀티미디어학회 2006 한국멀티미디어학회 학술발표논문집 Vol.2006 No.1

본 논문에서는 정확하고 효율적으로 객체의 위치를 인식할 수 있는 실시간 위치 인식 시스템을 설계하고 구현하였다. 제안한 시스템은 실내에 설치된 위치인식 노드와 이동하는 객체 사이의 거리를 계산하기 위하여 RF신호와 초음파의 전송 시간 차를 이용하였으며, 삼각측량법을 이용하여 실시간으로 객체의 위치를 측정할 수 있는 기능을 제공한다. 또한, 실내에서 이동하는 객체의 초정밀 위치정보를 계산하는데 필요한 핵심기술인 RF신호와 초음파 신호간의 시간동기화 기법을 제공한다. 실험을 통해서 본 논문이 제안하는 위치인식 시스템의 효율성과 정확성을 검증하였다.

구연 / 제 1 회의장 / 위장관 6 : 가족성 위암과 조기검진의 필요성

신동우(D . W . Shin),노성훈(S . H . Noh),허지헌(J . H . Huh),형우진(W . J . Hyung),라기혁(K . H . Lah),민진식(J . S . Min) 대한소화기학회 1999 대한소화기학회 추계학술대회 Vol.1999 No.-

메가기둥-테두리보 접합부의 구조성능 검증에 대한 실험연구

신동우(Shin, Dong Woo),최경규(Choi, Kyoung Kyu),박홍근(Park, Hong Gun) 한국콘크리트학회 2012 한국콘크리트학회 학술대회 논문집 Vol.2012 No.5