SMAC법을 이용한 물기둥 붕괴의 수치시뮬레이션

김남형,김남국 제주대학교 해양연구소 2000 해양자원연구소연구보고 Vol.24 No.-

SMAC method is, one of the numerical simulation techniques. modified from the original MAC for the time-dependent variation of fluid flows. The Navier-Stokes equation for incompressible time-dependent viscous flow is applied. and also marker particles which move with the fluid are used. Two-dimensional numerical simulations of the collapse of water column are carried out. This paper has shown the very well computation results of the collapse of water column using SMAC method.

100M 競技의 2000년대 記錄推定에 관한 硏究

徐國雄,南基喆,尹良津 부산대학교 사범대학 1991 교사교육연구 Vol.22 No.-

This study compared and analyzed the time-records between two books that is, the best new world record book issued by I.A.A.F and the track and field record book issued by A.T.F.S by using the regression and ratio-increasing method. Two books consist of the world records and the annual world records, respectively. This study aims to predict how the 2000-year world record and the annual world record would be changed. Based on the analysis, time recorded of 2000 year 100m race would be predicted as follows; 1. Men's world record was estimated to 9.68 seconds (regression method), and 9.66 seconds (ratio-increasing method). And annual world record was estimated to 9.75 seconds (regression method), and to 9.74 seconds (ratio-increasing method), respectively. 2. Women's world record was estimated to 10.34 seconds (regression method) and 10.14 seconds (ratio-increasing method). And annual world record was estimated to 10.43 seconds (regression method), and 10.11 seconds (ratio-increasing method), respectively.

호주의 정부회계제도개혁과 그 시사점

이남국 한국행정연구원 2003 韓國行政硏究 Vol.12 No.3

결과중심 관리개혁이 그 의도한 목표를 달성하기 위해서는 성과를 정확히 측정·평가하고 이에 따른 보상과 제재가 이루어질 수 있어야 한다. 그런데, 각 국 정부가 주로 채택하고 있던 현금주의에 기초한 정부회계제도는 기본적으로 자산, 부채, 그리고 자본에 대한 인식을 하지 않고 수익과 비용의 대응이 이루어지지 않아, 결과중심 관리개혁에 필요한 재정(비용)정보를 제공하는데 많은 어려움이 있었다. 이로 인해 결과중심 관리개혁을 추진하고 있는 각 국의 정부개혁에 공통적으로 정부회계제도개혁이 등장하게 된 것이다. 이러한 인식 하에 정부회계제도개혁의 성공적 수행사례로 평가되고 있는 호주에 대한 검토결과, 호주의 정부회계제도개혁은 분권화와 책임성 확보를 중심으로 한 정부개혁의 자연스러운 결과로 이루어졌으며, 변화하는 환경에 적합한 정부회계제도모델을 제시하기 위해 민간과 공공부문의 체계적이며 지속적인 노력이 이루어진 것으로 나타났다. 또한 뉴질랜드, 영국 등과 마찬가지로 정당과 정권을 초월한 정치적 지지, 실무담당 회계공무원의 인식변화를 기초로 한 전문성 제고 노력, 그리고 새로운 정보를 활용하려는 관리자의 의지와 능력 등이 중요한 역할을 한 것으로 나타났다. 마지막으로 새로운 정부회계제도가 산출하는 재정정보의 한계에 대한 인식을 기초로 예산제도 개편을 비롯한 기타 적실성 있는 정부의 재정활동 정보를 제공·활용할 수 있는 제도적 보완조치 또한 병행되어야 함을 시사하고 있다. constituents. Ultimately, the vision of Young Weol Gun was established as 'Pro-Environmental and Cultural Tourist and Relaxation City. The OECD countries have been practicing a series of government reform programs in order to cope with the pressures of the environmental change. These programs are basically aimed at enhancing public sector productivity and customer satisfaction through the adoption of result-oriented management system. The development of accounting system is an indispensable step toward a successful result-oriented management in government. Especially the cash-based governmental accounting system makes it hardly provide accurate information on the status and soundness of governmental financial management. Thus, many OECD countries are transforming the accounting system from cash accounting to accrual accounting. This study explores the causes, consequences, performance, and limitations of Australian governmental accounting system reform for the successful adoption of the new accounting system in Korea. This study shows the successful Australian experience with its decentralization and strengthened accountability of the public bureaucracy, and the new system provides valuable information for better management decisions. Continuous efforts based on active participation of private and public sector, an official's will and capability to apply new information can play an important role in the system. But to reform the governmental accounting system successfully, it needs to clarify the limitation of financial information that new system products. And finally, under this circumstances, this study implies that supplemental measures like budget system reform and performance management system of measuring policy effects should be accompanied. This paper investigates the factors which have influenced on the local public services contracting-out outcomes. This study aims to provide the theoretical grounds of the

SMAC법에 의한 유체입자 충돌의 수치시뮤레이션

김남형,김남국 제주대학교 해양연구소 1996 해양자원연구소연구보고 Vol.20 No.-

It is important to clarify the collision of water particles which change rapidly due to the time and space. SMAC method modified the original MAC, which is one of the numerical techniques for the handling time dependent variation of fluid flows, is employed. The Navier-Stokes equation for incompressible time-depe-ndent viscous flow is applied and, Also marker particles which move with the fluids are used. The transient aspects can be computed for as much elapsed time as desired. Two-dimensional numerical analysis problems of the collision of water particles are carried out.

Phage 항원성에 미치는 trypsin의 영향

이현국,양남웅,서재홍 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.1

In order to investigate the effect of trypsin(TP) on the phage antigenicity, the Klebsiella phage-host cell system and sheep red blood cells were used, and the results were as follows. The neutralization velocity of Tp-treated phage(Tp phage) by anti-normal phage serum was faster than that of normal phage. And, the neutralization of normal phage by anti-Tp phage serum was remarkably worse than that of Tp phage. The normal phage - neutralizing activity of the anti-normal phage serum absorbed with Tp phage was very weak. However, the anti-Tp phage serum absorbed with normal phage still considerably neutralized the Tp phage. The cold phage hemagglutination(CPH) by normal and Tp phage was most favourable when the reactions are carried out with each phage-correspondig antiserum. The anti-normal phage serum absorbed with Tp phage and the anti-Tp phage serum absorbed with normal phage still formed, with each corresponding phage, the CPH. The neutralization of Tp phage, by anti-normal phage serum, Passed two times through host bacteria and that of Tp phage, by anti-Tp phage serum, Passed three times through host bacteria were similar to the neutralization of normal phage by each antiserum. If the Tp phage is passed two times or three times through host bacteria, the forming capability of CPH by each phage bacame similar, under the anti - normal and anti - Tp phage sera, to that of normal phage. The absorption of Tp phage to host bacteria was a little faster than that of normal phage. If the Tp tretment of phage is done for 48hours at 37℃, the surviving titer was reduced to around 40%.

SMAC법을 이용한 물기둥 붕괴의 수치시뮬레이션

김남형,김남국 제주대학교 해양연구소 2000 해양과환경연구소 연구논문집 Vol.24 No.-

SMAC method is, one of the numerical simulation techniques, modified from the original MAC for the time-dependent variation of fluid flows, The Navier-Stokes equation for incompressible time-dependent viscous flow is applied, and also marker particles which move with the fluid are used. Two-dimensional numerical simulations of the collapse of water column are carried out. This paper has shown the very well computation results of the collapse of water column using SMAC method.

Ti 鎔接材의 機械的 特性 및 殘留應力의 分布에 關한 硏究

최병기,장경천,국중민,정장만,구남열 한국산업안전학회 2003 한국안전학회지 Vol.18 No.1

The objective of this paper was to investigate the welding characteristics according to the restraint condition, the pass number, and the shield gas quantity with titanium commonly using in power stations, aircrafts, ships, and so forth. The residual stress distribution was measured under restraint and nonrestraint welding conditions. The tensile strength and elongation of the 4 pass welded specimen were shown higher about 10% and 30% than those of the 7 pass welded specimen at the same welding conditions respectably. Also, the more shield gas quantity and the shorter natural cooling time, the higher tensile strength and the lower elongation.

폴리에스테르 섬유 감량시스템용 프로세서 타이트레이터 개발

조진호,이흥락,이종현,김명남,구성모,김무영,진경찬,유병희,강민수,김국진 경북대학교 센서기술연구소 1993 연차보고서 Vol.1993 No.-

폴리에스테르 섬유 감량시스템의 제어를 위해서는 처리조 내에서 감량되는 섬유가 목표 감량치에 도달했는지를 판단해 주는 장치가 필요하다. 본 연구에서는 가성소다용액의 초농도 및 섬유 감량 정도의 정확한 측정과 감량 종료시간의 산출 및 이에 따른 종료신호를 발생할 수 있는 폴리에스테르 섬유 감량기 전용의 자동적정장치를 개발하였다. To control caustic soda treatment system for the polyester fabric reduction, we need the device to determine that the fabric has been arrived target reduction value. In this study, we develope an automatic process titrator for the caustic soda treatment system. Major functions of the target titrating system are accurate measurements of the caustic soda concentration and then producing the end point signal for caustic soda treatment system.

성장발육에 따른 흰쥐의 악관절 신경분포의 변화

배용철,김영진,박국필,김현정,남순현 大韓小兒齒科學會 1999 大韓小兒齒科學會誌 Vol.26 No.1

The purpose of this study was to investigate the distribution of CGRP immunoreactive nerve fibers in rat squamosomandibular joint with postnatal development. Squamosomandibular joint with adjacent tissue of 8 groups of rats(1,5,10,15,20,25,35-postnatal day and adult groups) were removed en bloc and processed for immunohistochemistry and were subjected to light microscopic examination. The results obtained were as follows; 1. The anterior portion of the articular disk was most densely innervated, followed by the posterior, lateral, and medial portions in each group. 2. Increase of CGRP immunoreactive nerve fibers was evident in 10,15,20 postnatal day groups. 3. Almost no CGRP immunoreactive nerve fibers were observed in articular surface of disk proper, mandibular fossa and condyle head of each group. These result suggest that CGRP immunoreactive nerve fibers increased in synovial membrane and peripheral portion of articular disk during 10-20 postnatal day may play a important role in squamosomandibular joint function after weaning period.

나트륨-수증기 반응에 대한 실험적 연구

정지영,정경채,김병호,김태준,최종현,박남국 한국공업화학회 2002 응용화학 Vol.6 No.2

An experimental study for the investigation of the sodium-steam reaction phenomena was carried out. No significant aggressive explosion phenomena were observed as compared with that of sodium-water reactions. It was also observed that the rate of increase of reaction temperature decreases with increasing initial temperature of liquid sodium and that the temperature of the target depends upon the flow rate of injected steam.