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이형옥(Lee Hyeong Ok),최정(Choi Jung),박승배(Park Seung Bae),임형석(Lim Hyeong Seok) 한국정보처리학회 1999 정보처리학회논문지 Vol.6 No.7
Parallel paths in an interconnection network have some significance in that message transmission time can be reduced because message is divided into packets and transmitted in parallel through several paths, and also an alternative path can be established when nodes and edges fault on routing path. A Folded Hyper-Star graph FHS(2n,n), whose nodes has 2n binary bit string, is an interconnection network which has a lower network cost than hypercube and its variation. In this paper, we analyze node disjoint parallel path in a Folded Hyper-Star graph FHS(2n,n) proposed as the topology of parallel computers and, using the result, prove that the diameter of Folded Hyper-Star graph FHS(2n,n) is 2n-1.
박승옥(Seung Ok Park),박원(Weon Park),김도연(Do Yeon Kim),허남진(Nam Jin Huh),최광해(Kwang Hae Choi),정철주(Chul Zoo Jung) 대한소아신경학회 1997 대한소아신경학회지 Vol.5 No.1
연구배경 : 소아에서 뇌척수압은 정확한 측정이 필요한 경우는 드물지만 압력이 정상인지 증가 되었는지를 아는 것은 중요할 수 있다. 요추천자 시술 중 협조가 되지 않은 소아에게 압력계를 이용해 뇌척수압을 측정하는 것이 쉽지 않다. 이에 저자들은, 소아에서 흔히 사용되는 척수천자침으로, 뇌척수액이 떨어지는 방울 수와 시간을 뇌척수압과 연관시키는 counting period를 결정함으로써, 뇌척수업을 측정할 수 있는 간단한 방법을 발견해 보고자 본 연구를 시행하였다. 방법 : 1997년 4월부터 5월까지 본원 소아과에 입원한 환자 중 뇌막 자극증상이나 패혈증으로 뇌척수액검사를 필요로 하는 15명을 대상으로, 소아의 척수천자 시술에 가장 많이 사용되는 22-guage 3.5-inch와 23guage 3.5-inch 척수천자침을 척수강내에 삽입한 후, 먼저 압력계로 척수액 방울 수를 1분 동안 센 다음, 상호 관계를 비교해 counting period를 결정하였다. Counting period가 결정된 다음에는, 전형적으로 10명의 환아에서 먼저 counting period동안 떨어지는 뇌척수액 방울수를 뇌척수압으로 결정하고, 압력계를 이용한 뇌척수압과 비교하였다. 결과 : 22 G 3.5inch 천자침을 이용한 counting period는 40초. 23 G 3.5-inch 천자침을 이용한 coungting period는 54초였다. 일정한 시간 동안에 천자침을 통해 떨어지는 뇌척수액 방울 수를 세어서, 그것을 뇌척수압으로 결정하는 counting period를 적용해, 전향적으로 10명의 환아에서 뇌척수압을 먼저 정한 후, 다시 압력계로 측정해 본 결과와 비교해 보았더니 모든 환아에서 10% 범위 내에 있었다. 결론 : 소아에서 뇌척수압을 측정하는 방법으로 counting period가 연구되었고 전향적으로 몇 명의 환자에서 시험되어졌다. 뇌척수액을 시험관에 받으면서 counting period동안 떨어지는 척수액 방울 수를 세기 때문에, 압력계로 측정하는 것보다 시술이 간단하고, 편리하며, 압력계를 파손할 염려가 없고 비용을 줄일 수 있으며 시술 중 오염의 빈도를 줄일 수 있을 것으로 사료된다. Background: Precise measurement of cerebrospinal(CSF) pressure rarely is needed, but it is frequently helpful to know whether CSF pressure is normal or elevated. It is often difficult to measure CSF pressure by manometer during lumbar puncture in uncooperated children. The purpose of this study was to determine appropriate counting periods for two commonly used spinal needles. Methods: Fifteen infant and children(from 1½ months to 9 years of age) with sepsis or meningeal irritation sign between April 1997 and May 1997 had measured CSF pressure. In this study, No. 22 or 23-guage, 3.5-inch, sharp, beveled spinal needle with a properly fitting stylet were used. After spinal needle is inserted in the lumbar subarachnoid space, estimated CSF pressure by manometer, and then counted drops of CSF during one minute period. A counting period can be dertermined such that the unmber of drops counted will approximate the CSF pressure in centimeters of H₂O. After these times were calculated, the method was verified in patients by comparing manometric pressure to drop count. Results: Counting periods for which the number of drops equals the pressure were then established for each needle size. Counting periods were determined at 40 seconds for 22-guage 3.5-inch needles, and 54 seconds for 23-guage 3.5-inch needles. The method was prospectively tested in 10 patients by comparing drop count over the calculated counting period to manometric pressures. In all cases, drop counts were within 10% of manometric pressure. Conculsions: This conting period method enables simple, rapid estimation of CSF pressure during lumbar puncture. Because drops can be counted while fluid is collected, the technique is more convenient than manometric pressue measures. Elimination of the manometer also reduced costs and may reduce the frequency of breaks in sterile technique.
우수축구선수의 체형 , 체지방 및 심폐기능에 관한 연구
박승옥(Seung Ok Park),허정행(Jeong Haeng Huh) 한국사회체육학회 2002 한국사회체육학회지 Vol.17 No.-
In this research, to find out the form, the fat, and the lung functions of football players, we measured and analyzed them with a total of 203 - 54 players of 6 teams in elementary school, 57 players of 6 teams in middle school and 55 players of 5 teams inhigh school and 37 players of 4 teams in university-in Seoul 1. The somatotype by groups were 3.56-2.07-4.07 for elementary school players, 2.18-2.17-4.48 for middle school players, 2.63-5.55-3.32 for high school players and 2.90-5.39-3.71 for university players. 2. The Pro-fat by groups was 20.28±6.96% for elementary school players, 14.21±3.67% for middle school players, 15.51±2.30% for high school players and 16.65±3.18% for university players. 3. The body fat by groups was 8.75±3.42kg for elementary school players, 7.36±2.21kg for middle school players, 10.07±1.74kg for high school players and 11.25±3.28kg for university players. 4. % LBM by groups was 33.92±4.70% for elementary school players, 44.26±7.27% for middle school players, 54.76±3.86% for high school players and 55.61±5.91% for university players. 5. VC by groups was 3.00±0.09ℓ for elementary school palyers, 3.98±0.24ℓ for middle school players, 4.84±0.25ℓ for high school players and 5.22±0.10ℓ for university players. 6. FVC by groups was 2.49±0.18ℓ for elementary school players, 3.52±0.27ℓ for middle school players, 4.53±0.22ℓ for high school players and 4.93±0.09ℓ for university players. 7. FEV1.0 by groups was 2.03±0.17ℓ for elementary school players, 2.99±0.17ℓ for middle school players, 3.99±0.25ℓ for high school players and 4.31±0.08ℓ for university players. 8. FEV1.0% by groups was 81.53±6.89% for elementary school players, 84.96±4.69% for middle school players, 88.12±4.79% for high school players and 87.52±2.16% for university players. 9. FEV/VC by groups was 82.79±5.12% for elementary school players, 88.46±3.47% for middle school players, 93.47±4.94% for high school players and 94.47±1.88% for university players.