배자기 중 인간 사지의 형태발생에 관한 연구

박형우,민양기,심용운 대한해부학회 1992 Anatomy & Cell Biology Vol.25 No.1

위성자료를 이용한 지점 호우모형에 관한 연구

이재형,김운중,김경수 全北大學校 1995 論文集 Vol.39 No.-

The physically based heavy rainfall model was developed by Ceon(1994) for storm event. This is a modified version of the model. The input variable of the model are temperature, pressure, dew point temperature on the ground level and cloud top temperature by the satellite. The results show that there is significant deviation between the hourly calculated rainfall rate and the observed data. But the difference is very small in the total rainfall rate. The deviation is due to not well fitted for the saturate evaporation, which are calculated from cloud top temperature, at the lower 253°K.

스포츠활동과 골절의 관계분석

김형곤,백경운 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.1

If the treatment of acetabular fractures are not satisfactory, there will be serious complication such as traumatic arthritis of avascrlar necrosis of the frmoral head. There is much continuing discussion as to where conservative or sugical treatment should be used. The authors experienced 33 cases of acetabular fractures, that were treated aut the Department of Orthopaedic surgery, Maryknoll Hospital from May 2002 to 1999. The results of 32 cases who were followed ovwe a 1 year period are as follow: 1. According to Letournel's classification the most common type of elementray fracture was posterior wall(22.3%)and a T-shaped fracture was 11.4% and bitg column fractures were 10.9%. 2. Complication were traumatic arthritis(15 cases), superficial infection(6 cases), ectopic ossification(6 cases), osteomyelitis(2 case), AVN of the femoral head(2 case), and iartrigenic femoral shaft fractusre(nl case). 3. According to matta's assessment, satisfactory results of conservative treament were 36% clinically and 36% radiologically, and by surgical treatment , 70% clincally and 69% radiologically. 4. Surgical treatment in acetabular fractures, such as an anatomical reduction and rigid fixation followed by early joint motion were improved the result and decresed the rate of traumatic arthritis.

폭풍시 사구의 침식각에 따른 해안단면의 침식에 관한 연구

이보형,표순보,이홍식,조원철 中央大學校 建設環境硏究所 1999 環境科學硏究 Vol.9 No.2

This EDUNE model developed by Kriebel was used for predicting storm-induced beach and dune erosion due to elevated water levels and waves. This model was based on the convolution integral involving a erosion-force function and an exponential erosion-response function. This numerical model adopted the equation of sediment continuity and a dynamic equation governing the cross-shore sediment transport due to a disequilibrium of wave energy dissipation levels. These equations are solved numerically by an implicit, double-sweep method to obtain the changes in position of elevation contours in the profile. In this study, the changes of a beach profile and dune erosion have been simulated for varying the dune erosion angle due to storm. The range of angle was 0.1~0.4 radian. It is shown that erosion rate is increasing according to the decrease of erosion angle.

파라콰트 중독에서의 항산화치료

권운용,조유환,송형곤,김명천,이중의,서길준,윤여규 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: Paraquat causes severe tissue toxicity when ingested, but has no effective treatment modality. We have shown that high dose vitamin C has effective antioxidant activities against the paraquat intoxication in a previous animal experiment. This study was designed to evaluate the effect of antioxidant therapy with high dose vitamin C and vitamin E in human cases of paraquat intoxication. Methods: From August 1999 to August 2001, 19 paraquat intoxication patients who visited the emergency department of the Seoul National University Hospital and the Kyounghee University Hospital were enrolled to this study. They were devided into two groups, a control group(9 patients) and a study group(10 patients). The control group received only conservative managements including gastro-intestinal decontaminati-on. The study group received conservative managements plus the antioxidant therapy which was composed of vitamin C 24 gm/day intravenously and 20 gm/day orally, and vitamin E 1.6 gm/day orally. Results: In the study group, 5 of 10 patients(50%) survived, but all patients of the control group died(p=0.003). There were no significant differences in age, sex, and usage of gastric lavage and activated charcoal between the two groups. Difference in ingested amount of paraquat between the two groups could not be analyzed due to the inexact and subjective measuring methods based on patients' histories. Conclusion: Antioxidant therapy with high dose vitamin C and vitamin E is effective in vival rate in paraquat intoxicated patients.

DFF알고리즘을 이용한 깊이 정보 추출

김충원,이형근,노경완 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.2

영상으로부터 물체의 깊이를 추출하는 방법은 structured light, texture, stereo, focusing 등의 방법이 사용되고 있는데 본 논문에서는 focusing을 이용하여 물체의 깊이정보를 획득하는 알고리즘을 논의하였다. 기존의 stereo 방식은 서로 다른 위치에서 얻어진 두 장의 영상 사이의 관계를 해석하여 3차원 정보를 얻는다. 그러나 이 방법은 두 영상간의 대응 관계를 정하는 알고리즘이 매우 복잡하며, 일치되는 대응점을 구하지 못하면 3차원 거리를 구할 수 없다는 단점이 있다. 본 논문에서는 이와 같은 대응점의 문제가 발생하지 않고 초점으로부터 비교적 정확한 깊이정보를 획득할 수 있는 DFF(Depth From Focus)에 대해 논하고 실험을 통하여 효과적으로 3차원 정보를 추출함을 보였다.

조직정치지각이 경찰공무원의 직무소진에 미치는 영향

임운식,김무형 치안정책연구소 2011 치안정책연구 Vol.25 No.2

조직 내 정치행동은 조직구성원들에게 여러 가지 부작용을 초래할 수 있다. 그동안 조직정치에 관한 연구들이 있어왔지만 경찰공무원들을 대상으로 한 연구는 찾아보기 어렵다. 따라서 이 연구에서는 조직정치지각이 경찰공무원들의 직무소진에 어떠한 영향을 미치는지 살펴보기 위해 대구지역에 근무하는 경찰공무원들을 대상으로 자료를 수집하였다. 독립변인으로 조직정치지각을 선정하였고 종속변인으로는 직무소진을 선정하였는데, 직무소진은 정서적 소진, 비인격화, 개인성취감 등 세 가지 하위 구성요소로 구분하였다. 그리고 통제변인으로 성별, 연령, 학력, 계급을 선정하였다. 다중회귀분석 결과 조직정치지각은 직무소진 요인인 정서적 소진, 비인격화에 정(+)의 영향을 미치는 것으로 나타났으며, 개인성취감에는 부(-)의 영향을 미치는 것으로 나타났다. 즉 조직정치지각을 높게 인식하는 구성원일수록 정서적인 탈진이 높고, 사람들에게 비인격적인 태도를 가지게 되며, 개인성취감이 낮음을 알 수 있다. 경찰공무원들이 직무소진에 장기간 노출될 경우 여러 가지 심각한 부작용이 초래될 수 있으므로 직무소진을 최소화하기 위해서는 조직 내 정치행동을 잘 관리하고 개선해 나가야 할 것이다. The purpose of this study was focused on the relationship between perceptions of organizational politics and police officers' job burnout. In this study, the perception of organizational politics is selected as an independent variable and the job burnout is selected as a dependent variable, and the job burnout is again composed with emotional exhaustion, depersonalization, personal accomplishment. Moreover, the sex, age, level of education and rank were selected as a control variable. To test the hypotheses, survey data from police officers in Dae-Gu are collected analyzed. Principal component method is used to see which items cluster together in each factors and to calculate factor scores. Multiple regression analysis identifies several factors which have significant effects on job burnout. Key findings can be summarized as follow. The perception of organizational politics have a positive influence on the emotional exhaustion and depersonalization. On the contrary to this, the perception of organizational politics have a negative influence on the personal accomplishment. In other words, as the police officers who more realize the perception of organizational politics also they are better for emotional exhaustion and depersonalization, but not for the personal accomplishment. There might be happen some serious side effects for police officers in case of the long-term exposure from the job burnout, so that the political behavior need to be well managed and improved to minimize the job burnout.

차량 시뮬레이터를 이용한 적응순항제어시스템의 성능 평가

남형권,이운성 국민대학교 생산기술연구소 2003 공학기술논문집 Vol.26 No.-

Adaptive Cruise Control (ACC) system can automatically adjust the headway-time and driver vehicle's speed between a driver vehicle and a preceding vehicle. Driving simulator a is virtual reality tool that allows Driver-In-the-Loop Simulation in a laboratory. This paper addresses driving behavior with Adaptive Cruise Control (ACC) system using driving simulator. Participants with different driving styles have driven the simulator with and without ACC through a highway route. Participants are divided by Driving Style Questionnaire (DSQ)-Focus, Speed and Total DSQ scores. Driving behavior in terms of average headway-time, lateral position of a car, and head and gaze movement has been investigated.

강산 및 강알칼리 음독에서 냉각 용액을 사용한 희석 요법과 중화 요법의 가능성

이중의,송형곤,김동훈,권운용,곽영호,서길준,윤여규 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3

Background: There is no effective treatment modality for caustic agent ingestion. Dilution and neutralization are prohibited because of the risk of secondary thermal injury. This experiment is designed to evaluate the amount of dilution and neutralization heat and to gauge the applicability of dilution and neutralization therapy using cold solutions to suppress the peak temperature. Methods: This is an in-vitro chemical experiment. HCl, CH3COOH, NaOH, and NH4OH are selected as representatives of strong and weak acids and strong and weak alkali, respectively. 20℃, 11.6M, 5.8M, and 2.9M solutions of each acid and alkali are made and mixed using a magnetic stirrer at a room air temperature of 28℃. The peak temperature, the duration above 40℃, and the heat amount are measured or calculated. Results: When a 11.6M HCl or NaOH solution is diluted with same amount of water, 32 or 18cal. per mL of HCl or NaOH is produced, respectively. HCl produces a significant peak temperature, but NaOH does not. The lower the concentration, the lower the amount of heat production. 11.6M CH3COOH and NH4OH solutions don't produce dilution heat.11.6M and 5.8M solutions of all acids and alkali produce destructive neutralization heat. However, 2.9M solutions produce neutralization heat which might be controllable. When a 11.6M HCl or NaOH solution is neutralized with a -10℃ 2.9 M NaOH or HCl solution, respectively, the peak temperature produced is below 40℃ and seems to add little thermal damage to viable tissue. Conclusion: Dilution and neutralization with a cold solution in cases of strong acid or alkali ingestion is a promising method to avoid thermal injury.

바람에 의한 정사각주형 건물주위의 유동해석

서상호,노형운,심준완,이광열 崇實大學校 生産技術硏究所 1994 論文集 Vol.24 No.-

It is necessary to understand fully the effects of wind forces on buildings, specially high-rise buildings in a large city. Air flows around a cubic-shaped model are investigated experimentally in the wind tunnel and simulated numerically. Pressure distributions and the corresponding pressure coefficients are determined by the experimental results. The pressure distribution results are compared with the numerical analysis. The software of FLOW3D Release 3.2.1 is used for numerical analyses. The numerical results for pressure distribution are in fairly good agreement with those of experiments.