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RFID 리더를 위한 중재 알고리즘의 모델링 및 시뮬레이션
류원상 ( Won Sang Ryu ),안시영 ( Si Young Ahn ),김용택 ( Yong Taek Kim ),배성우 ( Sung Woo Bae ),송의석 ( Eui Seok Song ),정명섭 ( Myoung Sub Jeong ),성영락 ( Yeong Rak Seong ),오하령 ( Ha Ryoung Oh ),박준석 ( Jun Seok Park ) 한국정보처리학회 2007 한국정보처리학회 학술대회논문집 Vol.14 No.2
RFID (Radio Frequency IDentification) 리더의 동작 영역은 리더의 감도와 전력이 도달할 수 있는 거리에 의해 제한된다. RFID Shower 는 근접한 리더로부터 전송되는 신호를 증폭하여 리더의 동작 영역을 확장한다. 그러나, RFID Shower의 동작 영역 안에 여러 리더들이 있을 경우 리더들간의 신호충돌이 발생한다. 이를 해결하기 위해 중재 알고리즘이 제안되었다. 본 논문에서는 RFID 리더들을 위한 중재 알고리즘을 DEVS 형식론에 기반하여 모델링하고 시뮬레이션 하여 성능을 측정, 비교하였다.
김태훈,김형석,홍기도,하성식,류의석 대한골절학회 1997 대한골절학회지 Vol.10 No.4
Supracondylar fracture of the humerus is the most common elbow fracture in children. It can be complicated by Volkmann's ischemic contracture, nerve injury, deformity of elbow, joint stiffness, and myositis ossificans, etc. even after the treatment. Various methods of treating displaced supracondylar fracture have been described, and the indications for open reduction and internal fixation are relatively established well. The surgeon, however, might be in trouble with making decision for closed reduction, whether to maintain by casting or by percutaneous pinning. From Jan. 1990 to May 1996, 117 patients of supracondylar fracture had been treated in Seoul Adventist Hospital, and 82 patients of them were challenged initially by closed reduction and casting. Among them, 51 cases have been followed more than 1 year, and they are reviewed. 1. The average age was 7.2 years, and the patient population consisted of 33 boys and 18 girls. 2. 3 cases of nerve injuries, 2 cases of ipsilateral forearm bone fractures, 2 cases of impending Volkmann's ischemic contracture and I case of cerebral contusion were associated with supracondylar fracture. 3. Fracture pattern were classified as flexion type of 1 case and extension type of 50 cases. According to Gartland classification, type II was 16 cases(31.4%), type III-A was 27(52.9%) and III-B was 7(13.7%). Of all, 28 cases(54.9%) were comminuted and 23 were non-comminuted. On the other hand, 14 cases(27.5%) were oblique fracture and 37(72.5%) were transverse one, classified by pattern of fracture line. 4. Success rate of closed reduction and casting were 56.3% in Gartland type II, 33.3% in type III-A, 42.9% in type III-B. In comminuted fracture, it was 21.4% and 65.2% in non-comminuted one. Success rate was 7.1% in oblique fracture, and 54.1% in transverse one. This suggests that comminuted fracture or oblique fracture should not be tried by closed reduction and casting but by percutaneous pinning. 87.5% of non-comminuted and transverse fractures were treated successfully by initial closed reduction and casting, and it also suggests that closed reduction and casting should be done only in this case selectively. 5. By Flynn's criteria the results were excellent in 9 cases, good in 8, fair in 3 and poor in 1 with casting. Percutaneous pinning resulted in 15 excellent, 10 good, and 1 fair cases. Open reduction and internal fixation resulted in 2 excellent and 2 good cases.
김원규(Won-Kyu Kim),류의석(Eui-Suk Lew),박형우(Hyoung-Woo Park),정호삼(Ho-Sam Chung) 대한체질인류학회 2000 해부·생물인류학 (Anat Biol Anthropol) Vol.13 No.2
간추림 어깨관절의 발생은 1855 년 Luschka 가 최초로 언급한 이래 1975 년 O’Rahilly 및 Gardner 가 사람 배자 에서 어깨판정의 발생과정을 집대성하여 연구 보고한 바 있으나 발생초기부터 출생직전에 이르기까지 어깨관절의 발생과정이 체계적 3 로 연구된 것은 없는 실정이며, 특히 한국인에서 어깨관절의 발생과정을 배자 및 태아에서 시기별호 체계적으로 연구된 것은 거의 전무한 실정이다. 이에 본 연구자는 한국인 배자 및 태아에서 어깨관절의 발생을 시기별로 연구하고자 발생기에 따라 발생 11 기부터 발생 23 기까지의 배자 37 예와 대령 재 9 주부터 태령 제 32 주까지의 태아 18 예 등 총 55 예를 연구대상으로 정하였다. 연구대상은 업체현미경과 디지탈카메라를 이용하여 외형관찰을 시도하였으며, 조직표본을 제작하고 hematoxylin 및 eosin 염색과 Masson ’ s trichrome 염색을 시행하고 광학현미경으로 관찰하여 다음과 같은 결과를 얻었다. 발생 12 기에 상지싹이 처음으로 출현하였다. 발생 17 기에서 상완골과 견갑골의 중간엽농축이 관찰되었다. 발생 19 기에서 상완골과 견갑골의 관절오목 사이에 한층의 중간대 (interzone)가 관찰되었으며, 오목테두리가 형성되기 시작하였다. 발생 22 기에서 상완골과 오옥테두리 사이에 3 층의 중간대가 관찰되었다. 발생 23 기에서 상완골과 견갑골의 관철오목 사이에 3 층의 중간대가 형성되기 시작하였다. 태령 제 9 주 및 10 주에서 상완골과 오목테두리 사이에 분명한 관절강이 관찰되었고, 상완이두근의 긴갈래가 관절오목위결절 및 오목테두리에 부착된 소견을 관찰하였다. 태령 제 11 주에서 상완골과 견갑골의 관절오목 중앙부에서 관정공간이 형성되기 시작하였으며, 위팔두갈래근 긴갈래는 보다 치밀해졌다. 대령 제 16 주에서 오옥테두리는 섬유연골의 형태를 띠기 시작하였고, 관절공간은 보다 넓어진 소견을 관찰하였다. 태령 제 20 주부터 32 주에서 어깨관절은 관절공간이 분명하였고, 오목테두리가 완성되어 태령에 따라 크기성장하는 소견을 관찰하였다.
칠복음(七福飮)이 Glucose Oxidase에 의해 손상(損傷)된 대뇌피질(大腦皮質) 신경세포(神經細胞)에 미치는 영향(影響)
최공한,박승택,류도곤,최민호,엄상섭,허진영,강성도,고정수,서의석,성은경,조남수,이춘우,황일택,선성규,류영수,Choi, Kong-Han,Park, Seung-Taeck,Ryu, Do-Gon,Choi, Min-Ho,Um, Sang-Sub,Hea, Jin-Young,Kang, Sung-Do,Go, Jeong-Soo,Sou, Eui-Suk,Sung, Yeun-Ky 대한동의생리학회 1999 동의생리학회지 Vol.14 No.2
As the average life span have been lengthened and the rate of senile population have been raised, chronic degenerative diseases incident to aging has been increased rapidly and become a social problem. With this social background, recently, the facts that oxygen radicals(OR) have toxic effects on Central Nervous System and Peripheral Nervous System and cause neuropathy such as Parkinson's Disease, Alzheimer Disease have been turned out, and accordingly lots of studies on the mechanism of the toxic effects of OR on nerves, the diseases caused by OR and the approaches to curing the diseases have been made. The purpose of this study is to examine the toxic effects caused by Glucose Oxidase(GO) and the effects of herbal extracts such as Chilbokyeum(CBY) on the treatment of the toxic effects. For this purpose, experiments with the cultured cell from the cerebrums of new born mice were done. The results of these experiments were as follows. 1. GO, a oxygen radical, decreased the survival rate of the cultured cells on NR assay and MTT assay 2. GO, a oxygen radical, increased lipid peroxidation and the amount of LDH. 3. CBY have efficacy of decreasing lipid peroxidation. 4. CBY have efficacy of decreasing the amount of LOH. From the above results, It is concluded that Chilbokyeum has marked efficacy as a treatment for the damages caused in the GO-mediated oxidative process. And Chilbokyeum is thought to have certain pharmacological effects on controlling over aging and treating Dementia. Further clinical study of this pharmacological effects of Chilbokyeum should be complemented.
석창포(石菖蒲) 전탕액(煎湯液)이 Glucose Oxidase에 의해 손상(損傷)된 대뇌피질(大腦皮質) 신경세포(神經細胞)에 미치는 영향(影響)
최공한,박승택,류도곤,최민호,허진영,강성도,고정수,양상철,성은경,조남수,이춘우,서의석,류영수,Choi, Kong-Han,Park, Seung-Taeck,Ryu, Do-Gon,Choi, Min-Ho,Hea, Jin-Young,Kang, Sung-Do,Go, Jeong-Soo,Yang, Sang-cheal,Sung, Yeun-Kyung,Cho, Nam-Su,L 대한동의생리학회 1999 동의생리학회지 Vol.14 No.2
The purpose of this study is to examine the toxic effects caused by Glucose Oxidase(GO) and the effects of herbal extracts such as Acori Rhizoma(AR) on the treatment of the toxic effects. For this purpose, experiments with the cultured cell from the cerebrums of new born mice were done. The results of these experiments were as follows. 1. GO, a oxygen radical, decreased the survival rate of the cultured cells on NR assay and MTT assay. 2. GO, a oxygen radical, decreased the amount of neurofilaments and total protein. 3. AR have efficacy of increasing the amount of neurofilament. 4. AR have efficacy of increasing the amount of total protein. From the above results, It is concluded that AR has marked efficacy as a treatment for the damages caused in the GO-mediated oxidative process. And AR is thought to have certain pharmacological effects on controlling over aging. Further clinical study of this pharmacological effects of AR should be complemented.