CAM-Shift 알고리즘을 이용한 MPEG-4 Visual의 VOP(Video Object Plane) 추출

황의성,정재진,김태형,김두영 동아대학교 정보기술연구소 2006 情報技術硏究所論文誌 Vol.14 No.1

MPEG-4 for an object base coding after extracting the region from image, the coding for a real-time requirements is quick and must be accurate. The object crisis algorithms of existing calculation quantity are many and with image transformation or video conferencing system to same real-time application they are not suitably. The object real-time tracking it tried to apply the CAM-Shift algorithm which is possible from the dissertation which it sees consequently. Tracking the object which it moves or wants the VO where (Video Object) tracking the user wants in bounding box form defines the object where is started. Tracking the object of after uses a CAM-Shift algorithm and are extracted and the VOP with the VO which it is composed. It defines one bounding box with the method which is proposed consequently about lower only one VOP there to be it will be able to compose, it becomes.

Effect of low processing rate on homogeneous microstructural evolution of polyacrylonitrile‑based carbon fibers

Doo‑Won Kim,Dae Ho Kim,Sung Ryong Kim,Bo‑Hye Kim,Yun Hyuk Bang,Duck Joo Yang,Go Bong Choi,Yoong Ahm Kim,Kap Seung Yang 한국탄소학회 2019 Carbon Letters Vol.29 No.5

This study demonstrates that low processing rate for producing polyacrylonitrile (PAN)-based carbon fiber is a critical to obtain a homogeneous radial microstructure with high resistance to oxidation, thereby resulting in their improved mechanical strength. The dry-jet wet spun PAN organic fibers were processed (e.g., stabilized and then carbonized) utilizing two different rates; one is 1.6 times longer than the other. The effect of processing rate on the microstructural evolutions of carbon fibers was analyzed by scanning electron microscopy after slow etching in air, as well as Raman mapping after graphitization. The rapidly processed fiber exhibited the multilayered radial structure, which is caused by the radial direction stretching of the extrusion in the spinning. In case of the slowly processed fiber, the layered radial structure formed in the spinning process was changed into a more homogeneous radial microstructure. The slowly processed fibers showed higher oxidation resistance, higher mechanical properties, and higher crystallinity than the rapidly processed one. Raman mapping confirmed that the microstructure developed during spinning was sustained even though fiber was thermally treated up to 2800 °C.

경막외 혈액 봉합술을 시행받은 자발성 두개내 저압 환자의 분석

김두식,유수봉,윤상호 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.2

Background : Spontaneous intracranial hypotension(SIH) is found as a not uncommon cause of headache recently. We wanted to study its demographic characteristics, presenting symptoms and findings and the effect of autologous epidural blood patch (AEBP). Methods : We retrospectively analyzed medical records of 11 patients who were diagnosed of spontaneous intracranial hypotension and treated with AEBP from March of 2006 to October of 2009. Results : Age of patients(10 female and 1 male) was ranged from 29 to 51 years (mean 38.8 years). Their presenting symptoms included typical postural headache(11/11), nausea and vomiting(7/11), dizziness(2/11), stiff neck or neck pain(2/11), shoulder pain(2/11), and back pain(1/11). In nine patients CSF pressure was checked, CSF pressure was less than 6 cmH2O in 8 patients. In nine of eleven patients, CSF leakage was detected in cisternography. Brain MRI showed diffuse meningeal enhancement in six patients and subdural hematoma in one. VAS of postural headache decreased from 8-10(mean 9.6) to 1-5(mean 1.6) after AEBP. Conclusion : Most of the SIH patients were otherwise healthy people. It was prevalent among women, especially young adult. AEBP showed as an excellent treatment modality.

[논문]고층공동주택 스카이라인에 대한 선호도에 관한 연구 -부산시 수영강변을 대상으로-

이두휘,이성호 釜山大學校 都市問題硏究所 2004 都市硏究報 Vol.17 No.-

현대 시각 정보 디자인의 사고 전환에 대한 비평적 고찰

성낙양,박두성 永同大學校 1998 硏究論叢 Vol.4 No.1

본 소고의 목적은 전자정보시대에로의 세계적 흐름 속에서 시각 정보디자인이 나아가야 할 방향을 비평적 고찰을 통해 개략해 보고자 한다. 나아가 다원적인 디자인 실천의 시대적 추세 속에서 뚜렷이 제기되고 있는 시각 정보 디자인의 사고 전환과 디자인 가치의 재 설정을 범주별로 특성화하여 고찰한다. 전통적으로 디자인 가치는 도구성·효율성·미적 가치의 세 범주를 통해 정의되어 왔다. 이러한 디자인 개념이 오늘날에도 여전히 유효한 것이 사실이나, 정보전달과 사용자의 안전성이라는 관점에서 이 세 가지 디자인 가치를 통합적으로 아우를 수 있는 새로운 개념의 디자인 가치가 요구된다. 새로운 개념에 의해 통합될 디자인 개념은 자연적 요소와의 성공적 관계라고 생각된다. The aim of this study is critically to survey some directions of visual information design in the digitalized society, and then categorically to criticize a transposition of design thinking and design values which are clearly issued in main trends of polycentric design practice. Traditionally, the concept of design has been identified by three categories; utility, efficiency, and aesthetic value. It's true that those conceptions are still available, but from the point of view of safety for the communication and user-perception, I suggest that new idea for design which can overarch them is requested. I can say that a design concept will be unified by new idea is friendly relationships among the natural entities.

골반통증을 동반한 폐쇄신경 기원의 퇴행성 신경초종

이상욱,김두상,조현득,이창호,전윤수,이남규 순천향의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.1

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Paraquat 투여로 인한 흰쥐 폐장변화에 대한 면역 조직화학적 연구

도재원,김의한,강상균 순천향대학교 1992 논문집 Vol.15 No.2

Paraquat에 의해서 유발되는 간질 및 폐포내 섬유조직 증식증의 진행과정을 알아보기 위하여 20마리의 흰쥐를 대상으로 10mg/kg, 20mg/kg를 복강내 주사하고 3일, 5일, 7일, 10일, 15일 간격으로 폐장을 적출하여 조직학적 및 면역조직 화학적 방법을 통해 관찰하여 다음과 같은 결론을 얻었다. 1. 10mg/kg를 투여한 군에서는 뚜렷한 손상을 보이지 않고 7일후에는 거의 정상으로 나타나 Paraquat에 의한 독성 효과는 투여된 양에 의존됨을 알 수 있었다. 2. 나타나는 폐장의 변화는 2단계로 분류될수 있는데 폐포내에 출혈, 부종 및 초자막 형성은 초기에 나타나는 병변이었으며, 간질 및 폐포내 섬유 조직 증식증은 후기에 나타나는 병변으로 일반적인 급성 호흡곤란 증후군때 보이는 소견과 비슷하였다. 3. 관찰 초기부터 폐포세포 Ⅱ형의 증식이 나타나는 것으로 보아 중독 초기에 이미 폐포세포 Ⅰ형에 손상이 나타남을 알 수 있었다. 4. 간질 및 폐포내 간엽조직은 시간이 경과됨에 따라 Vimentin에 강하게 염색되는 것을 볼 수 있는데 이는 간질 및 폐포내 섬유조직 증식증이 시간 경과에 따라 진행되고 있음을 의미한다. 5. 7일 이후에 상피세포가 다시 EMA에 강한 양성 반응을 보였으며 이는 이들 세포들이 재생되고 있음을 뜻하고 있으나 더욱 시간을 두고 관찰 할 필요가 있다고 본다. To investigate the progress of the Paraquat-induced pulminary interstitial and intralveolar fibrosis, 10 white rats were administered 10mg/kg and 10 white rats were administered 20mg/kg of Paraquat intraperitoneally. Three, five, seven, ten and fifteen days after this injection, the rats were sacrificed. The removed lungs were evaluated by immunohistological and histological study, so following results were obtained. 1. Toxic effects of Paraquat seem to depend on the dose of administrated Paraquat since the groups of rats treated with 10mg/kg revealed no significant tissue damage after 7 days. 2. The pulmonary changes by Paraquat can be classified into two stages : the early change such as hemorrhage, edema and hyaline membrane formation, and the late change characterized by interstitial and intra-alveolar fibrosis. These changes are similar to the findings observed in acute respiratory distrees syndrome. 3. Proliferation of Type Ⅱ alveolar cell at the time of the initial observation (3days) suggested that the damage of type Ⅰ alveolar cell had been occured prior to observation. 4. Strong Vimentin positive staining of the interstitial and intra-alveolar mesenchymal cell with time indicated the progression of the interstitial and intra-alveolar fibrosis. 5. Strong positive reaction of epithelial cells to EMA after 7 days of Paraquat adminstration indicated the regeneration of these cells. However, due to short duration of observation, it was hard to obtain conclusion whether this regeneration completed or not.

Ⅲ급 부정교합의 치료후 예후에 관한 후향적 고찰

성재현,권오원,김상두 대한치과교정학회 1998 대한치과교정학회지 Vol.28 No.2

본 연구는 치료후 빈번한 재발로 인해 치료에 어려움을 겪는 Ⅲ급 부정교합의 치료후 예후를 예측하는데 도움을 주고자, 교정치료후 관찰기간동안 측모와 교합이 양호한 상태로 유지된 안정군(Stable group, n=12)과 그렇지 않고 재발의 경향을 보인 재발군(Relapse group, n=13)으로 나누고 초진시 계측항목을 이용한 t-test, 상관분석 그리고 판별분석을 시행한 결과 다음과 같은 결론을 얻었다. 1. 상하악골의 전후방적인 위치와 관계를 나타내는 항목인 SNA, SNB, ANB, Angle of convexity 그리고 APDI에서 두 군간 통계학적으로 유의성 있는 차이를 보여주지 않아 (p<0.05) 두군간 전후방적인 골결형태에 있어서는 차이가 나지 않음을 알 수 있었다. 2. 교합평면의 경사도와 관련된 항목인 Wits, AB to Occlusas plane angle 그리고 Occlusal plane to Mandihular plane angle에서 두 군간 통계학적으로 유의성있는 차이를 보여 (P>0.05)재발군의 교합평면이 안정군에 비해 전하방으로 많이 경사져 있음을 알 수 있었다. 3. 상하치열관계를 나타내는 항목인 Overjet에서 안정군이 재발군에 비해 절대치로 더 커(P<0.01) 전후방 골격부조화에 의한 것이 아닐 경우 치열의 전후방부조화가 클수록 치료후 예후가 좋음을 알 수 있었다. 4. 상관분석결과 Overjet과 Occlusal plane to Mandibular plane angle만이 통계학적으로 유의성있는 상관관계를 보여주었다(P<0.001, P<0.01). 5. 판별에 기여도가 높은 3항목 즉 Overjet, AB to Occlusas plane angle 그리고 Articular angle을 이용한 판별식을 도출하였으며, 이를 이용할때 본 연구에 사용한 표본의 88%를 올바르게 판별할 수 있었다. The purpose of this study was to predict the prognosis of class Ⅲ malocclusion treatments. 25 patients selected for this study were devided into two groups by the stability of dentitional, skeletal and soft tissue profile improvement. One was stable group which consisted of 12 children and the other was relapse group with 13 children. Various measurements in initial cephalogram were calculated and analyzed by t-test, correlation coefficient and discriminant analysis. The results of this study were summarized as follows: 1. In both stable and relapse groups, there was not distinct difference in the antero-posterior skeletal relationship(p<0.05). 2. As the result of wits, AB to occlusal plane angle and occlusal plane to mandubular plane angle, the occlusal plane of relapse group was slopper than that of the stable group. 3. In correlation coefficient analysis, the overjet and the occlusal plane to mandibular plane angle showed significant correlations(P<0.001, P<0.01). 4. The discriminant function was obtained from three major influential measurements; overjet, AB to occlusal plane angle and articular angle, and this function could discriminate correctly in 88% of these samples.

한국 남성의 노화에 따른 혈중 Androgen과 골밀도의 변화

김두상,김영호,이남규 大韓泌尿器科學會 2001 Korean Journal of Urology Vol.42 No.9

성별, 연령 및 생리주기에 따른 대장 통과시간의 변이

이상전,이두한,송영진,최재운,장이찬 대한대장항문학회 1995 Annals of Coloproctolgy Vol.11 No.1