색상 정보를 이용한 관절체의 3차원 모션 파라메타 추정

신수미,이칠우 전남대학교 전자통신기술연구소 2002 전자통신기술논문지 Vol.5 No.1

In this paper describes a method of inducing three dimensional motion parameters sampling human figure's features from the images, which are obtained from two stereo cameras. In this method, the images are acquired from attaching minimum numbers of color markers to joints, and features of the joints are gained from using Color Segmentation Algorithm. Three dimensional points can be obtained using Stereo Geometry after calculating of the correspondence of two images' points, and then three dimensional parameters can be induced through analyzing these values with time axis. One of the distinctive features of this pater is that recognition results are not influenced by the input images' noise, for using previously arranged color markers. In addition, remarkably practical system production will be possible due to utilizing Stereo Geometry.

T-stub으로 접합된 H형강보의 거동에 관한 연구

신수미,박성수 대한건축학회 1998 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.18 No.2

문맥담도병증의 MRI 소견

신수미,김석,이준우,김창원,정연주,추기석,이태홍,이석홍,김광하,조몽 대한영상의학회 2005 대한영상의학회지 Vol.52 No.2

Purpose: We wanted to evaluate the MR imaging findings of portal biliopathy. Materials and Methods: We retrospectively reviewed the MR imaging of twelve patients having biliary abnormalities and portal cavernoma. Two radiologists working in consensus analyzed the presence of extrahepatic portal vein obstruction, cavernous transformation, portosystemic collaterals and bile ducts abnormalities that included irregular contour, stricture, ductal dilatation, wall thickening and enhancement of the ductal wall. Results: Extrahepatic portal vein obstruction was replaced by cavernous transformations in all patients. The cavernous transformations depicted on the MR scans were paracholedochal veins in 12 patients and epicholedochal veins in 6 patients. Three different types of biliary abnormalities were present: 1) the pseudocholangiocarcinoma type (3 patients) that resembled extrahepatic cholangiocarcinoma, 2) the varicoid type (6 patients) that was mainly distinguished by the multiple smooth extrinsic impressions along the common bile duct and 3) the mixed type (3 patients). The highly specific findings for the pseudocholangiocarcinoma type disease were thickening and delayed enhancement of the biliary ductal wall. Conclusion: The MR findings of portal biliopathy include cavernous transformation of the portal vein and morphological alterations of the biliary tracts such as irregular contour, biliary stricture with proximal ductal dilatation and thickening of the ductal wall with delayed enhancement. Recognition of these MR findings should facilitate the accurate diagnosis of portal biliopathy and prevent the misinterpretation or inappropriate management of this disease as malignancy or sclerosing chloangitis. 목적: 문맥담도병증은 문맥압항진증을 가진 환자에서 나타나는 담도계의 이상소견을 일컫는다. 문맥담도병증의 자기공명영상(MRI) 소견을 알아보고자 하였다. 대상과 방법: 해면상변형과 담관이상을 보인 환자 12명을 대상으로 자기공명영상소견을 후향분석하였다. 2명의 영상의학과 의사가 간외문맥폐쇄의 유무, 해면상변정도, 문맥-전신측부순환발달정도, 담관이상(담관벽의 불규칙한 외형, 담관협착, 담관확장, 담관벽비후, 담관벽의 조영증강) 여부를 분석하였다. 결과: 모든 환자에서 간외문맥폐쇄는 해면상변형으로 대체되어 있었다. 해면상변형은 모든 예에서 담도주위정맥총이 있었고, 6예에서는 담도위정맥총도 있었다. 담관이상은 3가지 형태로 나타났다; 1) 간외담관암과 비슷한‘유사담도암 형태’가 3예, 2) 총담관벽에 외인성 압박을 야기시키는‘정맥류형태’가 6예, 3) 두가지의 혼합형태가 3예. ‘유사담도암형태’에서 가장 특징적 소견은 담관벽비후와 지연조영증강이었다. 결론: 문맥담도병증의 MR소견은 해면상변형으로 대체된 간외문맥폐쇄와 담관벽의 불규칙한 외형, 담관협착과 동반된 상부담관확장, 담관벽비후와 지연조영증강 등의 변화들이다. 이러한 소견은 문맥담도병증의 정확한 진단과 담도암 혹은 경화담도염으로의 오진과 불필요한 시술의 위험을 줄일 수 있다.

가새의 위치를 고려한 튜브 구조물의 횡적거동에 관한 연구

신수미,이정훈,박성수 釜山大學校生産技術硏究所 2002 生産技術硏究所論文集 Vol.61 No.-

본 연구는 수평하중 하에서의 가새 튜브 구조 시스템의 거동을 분석하기 위하여 기본 골조 튜브 모델에 위치가 다른 가새를 추가한 가새 튜브 모델에 대한 해석을 수행하였다. 구조해석은 3차원 탄성해석 프로그램인 MIDAS GENw를 사용하여 수행하였으며, 구조 해석을 수행한 후, 각각의 거동 특성을 비교 분석하여 가새의 특성에 따른 횡변위 감소 효과 및 전단지연 현상의 완화를 고찰하고자 한다. The braced tube structure is a solution to increasing the efficiency of the framed tube structure, which is to add the substantial diagonal bracing to the faces of the tube. Due to additional braces, the flexural rigidity of structure is increased and the shear lag effect is decreased. Therefore the structure behaves like a cantilever tube. To analyze the behavior of the braced tube structure under the lateral load, the braced tube model, which adds diagonal members of the various characteristics - location, shape, stiffness - to the framed tube model, is used.

유전자 알고리즘을 이용한 고층철골 구조물의 최적설계에 관한 연구

신수미,신미영,박성수 부산대학교 생산기술연구소 2001 生産技術硏究所論文集 Vol.60 No.-

본 연구는 유전자알고리즘을 이용하여 고층철골 구조물의 층수에 따라 층간변위, 최상층변위, 부재강도, 층간변위와 부재강도 등의 구속조건으로 최적설계를 수행하였다. 그 결과 횡하중만을 고려한 경우에는 층간변위가 부재강도보다 전체거동에 더 영향을 줌을 알 수 있었다. 또한 구조물의 층수의 증가에 따라 강성 구속조건이 전체거동에 지배적임을 알 수 있었다. In this study, the optimum design is performed with the restrained condition such as the story drift, the maximum displacement, the strength of members and the story drift, strength of members. When considering lateral loads except for vertical load, the optimum weight based ort the lateral drift constraint is more heavy than that based on strength constraint. As the frame works become higher, stiffness governs the performance of frame.

개질된 가스를 이용한 PEMFC운전에 있어서의 전기화학적 특성 연구

申秀美,孫太源 弘益大學校 科學技術硏究所 2002 科學技術硏究論文集 Vol.13 No.-

Proton exchange membrane fuel cells(PEMFCs) are gaining popularity due to their benefits such as environmental friendliness and increased fuel efficiency. Because of the difficulties inherent to storing hydrogen, liquid fuel are reformed into hydrogen rich gas. This reformate also contains carbon monoxide that has been shown to poison the platinum catalyst used in PEMFC systems at concentrations as low as 10 ppm. The aim of this work is to study kinetic parameters of the electrochemical oxidation of hydrogen and carbon monoxide on the catalyst layer such as Pt/C, Ru/C, Pt/C+Ru/C. This study was examined using the rotating disk electrode technique in 0.5M H2SO4. Electrooxidation current density was Pt/C 〉 Ru/C 〉 Pt/C+Ru/C at Ar/H2 mixture gas purging. In the presence of CO, electrooxidation current density was increased at RDE electrode with rotating speed of 2500rpm higher than 0rpm and it was Pt/C〉Ru/C〉 Pt/C+Ru/C of descending series (between 600mV and 1000mV).

후유장애 평가 의뢰된 외상성 뇌손상 환자에 있어서 기억장애의 임상적 특성

신수미,김민정,정영인 대한신경정신의학회 2003 신경정신의학 Vol.42 No.6

Objectives:The purpose of this study is to investigate the characteristics of memory disturbance caused by traumatic brain injury. Methods:We measured the memory functions of 90 patients who complained of memory impairment after traumatic brain injury and were referred for mental disability evaluation, using Rey-Kim Memory Test. The patients were divided into three groups according to Memory Quotient and brain imaging studies. We also examined their intelligence and emotional characteristics using K-WAIS and MMPI. Results:1) Among the patients who complained of memory impairment and had abnormal brain imaging after traumatic brain injury, more than half showed no actual memory disturbance. 2) The group with actual memory disturbance showed normal verbal short-term memory but showed deficits in verbal long-term memory. And their visuospatial functions were preserved but visual short- and long-term memory were impaired. 3) There was notable correlation between memory function and intelligence in patients with traumatic brain injury. 4) The group with abnormal brain imaging showed more social withdrawal than the group without abnormal brain imaging. The group without abnormal brain imaging showed more somatization than the group with abnormal brain imaging. Conclusion:We suggest the special memory function test as well as brain imaging studies for patients who complain of memory impairment after traumatic brain injury

색각이상 보정용 콘택트렌즈의 분광투과율에 관한 표준화

신수미,이민재,이경문,성아영 표준인증안전학회 2021 표준인증안전학회지 Vol.11 No.2

본 연구는 색각이상 보정용 콘택트렌즈의 광학적 물성 중의 하나인 분광투과율의 시험방법을 분석하기 위해진행되었다. 실험을 위해 기본적인 하이드로겔 콘택트렌즈 재료에 착색 첨가제를 비율별로 첨가하여 색각이상보정용 콘택트렌즈를 제조한 후 각 렌즈의 분광투과율을 평가하였다. 고분자 중합을 위해 2-Hydroxyethyl methacrylate(HEMA)와 Methyl acrylate(MA), Methyl methacrylate(MMA), 교차결합제인 Ethylene glycol dimethacrylate(EGDMA) 그리고 개시제인 Azobisisobutyronitrile(AIBN)를 기본조합으로 사용하였다. 또한 색각이상 보정을 위한 착색 렌즈를 제조하기 위해 Platinum Octaethylporphyrin(PO)를 첨가제로사용하였으며 각 조합에 비율별로 첨가하여 물성을 분석하였다. 제조된 색각이상 보정용 콘택트렌즈의 분광투과율을 측정한 결과, 동공 중심부의 진한 착색 영역으로 인해 일반 시력보정용 콘택트렌즈의 분광투과율 표준화 규격에 부합하지 않는 것으로 나타났다. 따라서 색각이상 보정용 콘택트렌즈 및 착색 콘택트렌즈를 위한 가시광선및 자외선 투과율 시험방법이 별도로 필요하며, 이를 통해 다양한 기능을 가진 콘택트렌즈의 정확한 성능 평가가이루어져야 할 것으로 판단된다.

소프트 콘택트렌즈의 습윤성 측정에 관한 필요성 연구

신수미,이민재,성아영 대한시과학회 2019 대한시과학회지 학술대회 Vol.2019 No.07

Behavior of H-Shaped Beams with Tee-Stub Connections

신수미,박현정 대한건축학회 2004 Architectural research Vol.6 No.1

Deformation characteristics of H-shaped beams with T-stub connections are investigated for the effect of these joints on inelastic behavior of the beams in this paper. T-stub can show semi-rigid or behavior which is close to rigid connections, making it possible to adjust the ultimate load and deformation ability. This research is applied the model of exponential function based on the equations of equilibrium and compatibility equations at the location of bolts. It is not considered that the prying action reducing both the ultimate load capacity and the fatigue of the bolts in this study. The elasto-plastic behavior has been studied through various model with parameters of the diameter of bolt, span of beam, the thickness of T-stub web, the size of flange and the web of the beam. The results indicate that the thickness of T-flange has a great effect on the ultimate strength and deformation capacity of T-stub connections. The presented method may be an useful tool for the design of T-stub connections.