http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 황시영(See-Young Hwang) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
오석근(Seok-Kun Oh),차규일(Gyu-Il Cha),황시영(See-Young Hwang),유혁(Hyuck Yoo) 한국정보과학회 1999 정보과학회논문지 : 시스템 및 이론 Vol.26 No.5
본 논문은 유닉스웨어의 가상 메모리 시스템에서 자원을 보다 효율적으로 공유하는 방법에 관해 논한다. 기존의 유닉스웨어는 가상 메모리 자원을 프로세스 단위로 할당하며 공유하지 않는다. 그런데 가상 메모리의 요구량과 이 자원을 사용하는 프로세스의 수가 증가함에 따라 가상 메모리 자원은 시스템의 성능을 저하시키는 요인이 된다. 본 논문은 유닉스웨어의 가상 메모리 최적화 방안으로써 가상 메모리 자원을 공유하는 방법에 대해 고찰한다. 본 논문은 유닉스웨어에서 가상 메모리 자원의 공유 방법으로써 ‘공유 페이지 디렉토리’ 기법을 제시하고 이를 구현하였다. 또한 상용 시스템상의 실험 결과를 통해 제안된 기법이 전체 시스템 성능을 향상시킴을 보이고 있다. In the virtual memory system of Unixware, virtual memory resources are allocated per process basis. As the demands on virtual memory resources increase in volume and the number of processes using virtual memory grows, virtual memory resources degrade the performance of system significantly. In this paper, we propose and implement a method of sharing resources more effectively under the virtual memory system of Unixware and analyze the performance of the method. The proposed method is called ‘shared page directory’. We extensively evaluate the method in a real environment similar to TPC-B along with Oracle. The experimental results show that the shared page directory can improve the system performance by 10%.
-
H2-receptor Blocker 가 Succinylcholine 및 Vecuronium 의 작용시간에 미치는 영향
김일호,황경호,옥시영,김성열 대한마취과학회 1988 Korean Journal of Anesthesiology Vol.21 No.1
Cimetidine, an H_2-receptor blocker, is associated with a direct inhibition of liver microsomal enzymes and a decrease in liver blood flow which results in a variety of clinically significant drug interactions, but its effects on the action of muscle relaxants have not been established. Recently, Kambam et al(1987) reported that the duration of action of succinylcholine was prolonged 2∼2.5 times by cimetidine. The effects of cimetidine, ranitidine, and famotidine, on duration of action of succinylcholine and vecuronium were studied. Sixty ASA class 1 or 2 patients scheduled for elective expoloratory laparotmies were randomly divided into two groups as follows: Succinylcholine group(n=40, 1 mg/kg) control group(n=10) cimetidine group(n=10) : 300 mg po hs & 1hour before induction ranitidine group(n=10) : 40 mg po hs only. Vecuronium group(n=20, 0.08 mg/kg) control group(n=10) famotidine group(n=10) : 40 mg po hs only. All patients were premedicated with hydroxyzine(1.5 mg/kg) and Robinul 0.2 mg IM, I hour before anesthesia. Anesthesia was induced with thiopental sodium 5∼6 mg.kg and succinylcholine 1 mg/kg or vecuronium 0.08 mg/kg. Tracheal intubation was performed at 75∼100% block as monitored by train-of-four stimulation of the ulnar nerve at 2Hz, 20 seconds apart(ABM, Datex). Anexthesia was maintained with 50% nitrous oxide, oxygen, and 2% enflurane. The duration of action of the muscle relaxants was measured from injection of muscle relaxant to the time of 25% recovery of first twitch height on train-of-four stimulation. The results were as follows: 1) The duration of succinylcholine was prolonged significantly by the H_2-receptor blockers, 8.3±1.49 minutes with cimetidine, 9.8±1.98 minutes with ranitidine, and 10.3±2.48 minutes in the famotidine group as compared to 6.9±1.43 minutes in the control(p<0.05). 2) The duration of action of vecuronium was not affected significantly by the H_2-receptor blocker, 26.5±4.72 minutes in the famotidine group as compared to 23.6±4.52 minutes in the control(p>0.05).
-
김선종,옥시영,황경호 순천향대학교 1986 논문집 Vol.9 No.1
Succinylcholine and Pancuronium were compaired with Vecuronium which is new non-depolarizing neuromuscular blocking agents, in clinical agents. Vecuronium 0.08mg/kg, Succinylcholine 1mg/kg and Pancuronium 0.08mg was injected respectively when consciousness was lost after induction of thiopental sodium and immediately low concentration of enflurance with 50% N₂O was inhaled by positive pressure ventilation. The degree of neuromuscular transmission was measured using the train of four simulation of the ulnar nerve repeated every 20 second and the time was checked when the first twitch height(T₁) was depressed to 85%, 75%, 50% and 25% and when T₁was recovered to 25%, 50% and 75% after administration of three muscle relaxants respectively. The results were as follows; 1) There were not a significant difference in arterial blood pressure, pulse, and serum electrolytes(??) before and after vecuronium injection. 2) The onset times when T₁was reduced from 100% normal height to 85,75,50 and 25% after administration of three muscle relaxants respectively, were 24±14.5, 28±10.3, 46±9.7, and 54±13.5 seconds in succinylcholine, 33±14.5, 55±22.0, 83±21.2, and 115±22.2 seconds in vecuronium, and 61±24.5, 79±25.3, 112±22.4, and 188±25.1 seconds in pancuronium(Table 1). 3) In the recovery times when T₁was recovered to 25,50 and 75% without anticholinesterase after administration of three muscle relaxants respectively, these were 7.3±1.37, 9.2±1.54 and 13.6±1.99, minutes in succinylcholine, 24.0±6.7, 31.0±9.9, and 45.0±17.8, minutes in Vecuronium, and 89.0±27.0, 115.0±28.2 and 114.±38.6 minutes in Vecuronium, and 89.0±27.0, 115.0±28.2 and 144.0±38.6minutes in pancuronium(Table 2). Recovery index which is the time from 25% to 75% recovery as a parameter of the speed of recovery was 20.27±12.60 minutes in vecuronium with comparison of 66.0±39.88 minutes in pancuronium. The onset and recovery time of Vecuronium was fast than Pancuronium, but later than succinylcholine, and endotracheal intubation was easily done without any difficulties in all cases at 50% depression of T₁when was on 83±21.2 seconds after vecuronium injection. 4) Averge minutes volume of respiration was 7.1±0.73ℓ/ min, and the time of head lift was 11.45±8.87% seconds at 75% recovery of T₁after vecuronium without any reversal agents, and at this 75% recovery of T₁, T₄was recovered to 64.3±3.27%. 5) The cumulative effect, cardiovascular effect and histamine release of vecuronium were discussed.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
