월악산을 중심으로 한 교육수준별 휴양자원의 이용자 실태

정대성, 민두식, 김병로 忠北大學校 1986 論文集 Vol.32 No.-

-본문참고-

原木 표고 栽培 收益性 調査

崔泰鎬,閔斗植,趙南奭,趙修玉 충북대학교 농업과학기술연구소 1993 農業科學硏究 Vol.11 No.1

For the investigation of the economics of mushroom(Lentinus erodes) cultivation in the oak bed- log, the items of production costs were examined. The results are as follows ; 1. Among the items of cultivation costs in the first year, the material bed-log cost(62.4% ) was the highest, then the labor cost was. 2. The labor costs for management(27.6-28.1%), bed-log handling(26.8-27.9% ) and mushroom harvesting(26.2-27.9%) were higher than the others from the 2nd year to the sixth year. 3. The gross income and the cultivation cost per one bed- log were 15,672 won and 3,170 won for six years. 4. For six years, the total net income was 12,500 won and the annual income was 2,080 won per one bed- log.

괴사를 동반한 특발성 위확장증

이태훈,이재백,양두현 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Acute gastric dilatation without obstructive or organic disease is rare, but is possible after a gastric or an abdominal operation in cases of trauma, retroperitoneal hematoma, diabetic gastroparesis, hypoxemia, electrolyte imbalance, etc. However ischemic necrosis due to acute gastric dilatation is very rare and has been reported only in patients who has anorexia nervosa or overeat suddenly. If the distended stomach is not decompressed successfully by using a conservative method or if the process proceeds to ischemic necrosis, operative treatment is necessary. We experienced a case in which the stomach was acutely distended, and mutiple ischemic necroses had developed. The patient was a 27-year-old woman and had no specific underlying disease in her medical history. After overeating, the stomach was distended acutely. During the operation, mutiple ischemic necroses were found in the stomach. A total gastrectomy and Roux-en-Y esophagojejunostomy were performed.

마이크로 엔드밀을 이용한 측면가공에서의 공구변형에 의한 가공오차 보상

전두성,서태일,윤길상,장호수 한국공작기계학회 2007 한국공작기계학회 추계학술대회논문집 Vol.2007 No.-

This paper presents an integrated machining error compensation without measuring cutting force in micro end-mill. To compensate machining error, we consider new tool path. In order to determine the compensated tool path, two machining error parameters are defined and modeled using the SEM images. Experiments are carried out to validate the approaches proposed in this paper. In result, we identify the proposed methods are effective to compensate for machining errors.

과잉양수에 의한 지하수고갈 영향에 대한 연구

김종태,배두원,김만일,정교철 7개 국립대학교 환경연구논문집 공동발행 위원회 2005 공업기술연구 Vol.5 No.-

To study the relations of underground/surface-water exhaustion and excessive pumping, we have analyzed river, geological characteristics, recharge rate of rainfall and underground-water level. The ground water recharge rate from the SCS-CN analysis is 8.4%, and the recharge is computed in 6.4111 x 10^(5)㎥/y. This results mean that a big drawdown in observation holes may be occurred by excessive pumping. From in-situ hydraulic conductivity test, hydraulic conductivity in basement of the study area is calculated in 7.996 x 10^(-6)-2.067 x 10^(-6)m/sec. The underground/surface-water in the study area with small underground-water recharge rate will be exhausted by long time pumping.

사용자 만족도가 시스템 이용과 성과에 미치는 영향

박두태,이병철 서울市立大學校 1997 論文集 Vol.31 No.-

지금까지 사용자 만족도를 시스템 성과 평가의 척도로 개발하여 사용하여 왔다. 본 연구는 시스템 사용자 만족도가 시스템 사용빈도와 시스템 성과에 미치는 영향에 관하여 연구하였다. LISREL 2단계 잠재변수 모형을 사용하였다. 사용자 만족도는 Doll과 Torkzadeh (1988)가 제시한 설문을 사용하였고 시스템 성과는 시스템 수준, 원가절감, 경쟁우위로 측정하였다. 시스템 이용빈도는 거래처리시스템, 전략정보시스템, 전반적 시스템으로 세분하여 이용빈도를 측정하였다. 관측변수들은 대체적으로 사용자 만족도, 시스템 성과, 시스템 이용빈도 등을 적절히 설명하고 있다. 그러나 잠재변수인 사용자 만족도는 종속잠재변수인 시스템 성과와 시스템 이용빈도를 적절히 설명하고 있지 못하다. This study examines whether user satisfaction affects on system performance and system usage. Two tier LISREL latent variable model is constructed. User satisfaction is estimated using the measure suggested by Doll and Torkzadeh(1988). System performance is evaluated by three variables such as corporate system level, cost saving derived from information technology investment, and competitive advantage. System usage is measured by the observed variables of usages of transactional system, strategic informational system, and overall system. Observed variables explain factors (latent variables) of user satisfaction, system performance, and system usage properly. However, the latent variable of user satisfaction does not explain latent variables of system usage and performance.

유산망아지에서 말herpesvirus 의 면역조직학적 및 immunogold 기법에 의한 전자현미경적 진단

신태균,이두식,진재광,임윤규,조길재 濟州大學校 農科大學 動物科學硏究所 1997 動物科學論叢 Vol.12 No.1

To investgate the causative Virus in aborbon of horse in Cheju, we examined the spleen of affected foal by immunohtochemistq and immunogold electron microscopy using EHV - specific antisera. Immunohistochemical staining revealed that a large number of EHV immunoreadive cells were deteded in the red pulp as well as in the sinudoidal cells in the affected spleen. By the immunogold electron microxopy(EM) of crude preparation of EHV culture, electron dense gold paricles were labelled along the envelope of amorphous virus parhcles with vanng sizes of 50-200nm. We suppose that immunohistochemical method is good for the diagnosis of tissues in EHV infections, and immunogold EM is recommended for the study of virus dia gnosis of fluid specimen as well as the ultrastustural study.

알코올 금단 발작 환자에서 진전 섬망 예방에 대한 Nimodipine과 Chlordiazepoxide의 효과 비교

정두신,양광익,이보람,방차옥,이태경,성기범,안무영,박형국 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

Background & objectives : An increase of calcium influx during alcohol withdrawal state may contribute to neuronal hyperexitability, which cause delirium tremens(DT). Some investigators have found calcium channel blockers effects in prevention of DT in experimental animals. Therefore we evaluated the preventive effects of calcium channel blocker(nimodipine) and benzodiazepine(chlordiazepoxide) on the development of DT in alcohol withdrawal seizure(AWS) patients. Method : A total 59 patients with AWS were divided into three groups according to the management nimodipine-treated, chlordiazepoxide-treated, and control(no specific medication) groups. We compared the incidence rates of DT in the three groups. Results : Total incidence rate of DT was 30.5%(18 of 59 patients). There were 6 DTs of 18 patients(33.5%) in nimodipine-treated group, 4 of 21 patients(22.5%) in chlordiazpoxide-treated group, and 8 of 20 patients(44.0%) in control. Conclusion : The control group(44.0%) showed the highest incidence rate of DT. And nimodipine-treated(33.5%) and chlordiazepoxide-treated group(22.5%) were followed. However, this result failed to demonstrated statistically significant differences due to small numbers size.

구조화된 불확실성을 고려한 지능형 외팔보의 강인제어

권대규,방두열,소순선,유기호,이성철 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2003 工學硏究 Vol.34 No.-

This paper presents the robust control of a composite beam using μ-synthesis. The natural frequencies of the composite beam featured by a piezo-film sensor and piezo-ceramic actuator are calculated by using the modal analysis method and then modal coordinates are introduced to obtain the state equations of the structural system. Two-natural frequency were considered in the modelling, because robust control theory which has inherent robustness to structured uncertainty is adopted to suppress the transients vibrations of a glass fiber reinforced(GFR) composite beam. A robust controller satisfying the nominal performance and robust performance is designed using μ-synthesis theory based on the structured singular value. Simulations and experiments were carried out with the designed controller and effectiveness of the robust control strategy was verified by results.

大學 男女 球技選手들의 最大無機的 Power

김태운,유재충,안덕균,선우섭,이한,손두욱,박충서 慶熙大學校 社會體育硏究所 1994 體育科學論叢 Vol.- No.7

The purpose of the present research is to compare characteristics of maximal anaerobic power observed in different types of sports and player's sex differences. We have reached the following conclusions from the results we obtained by measuring maximal anaerobic power and blood lactate concentration of 60 elite university male and female players during the exercise of bicycle ergometer: 1. As to absolute and relative values of maximal anaerobic power, male players are higher in the order of rugby and handball, whereas female players are higher in the order of hockey and soccer, but no significant differences are observed between types of sports. 2. Male players are noticably higher in absolute values of maximal anaerobic power(p<0.001), but relative value is very simi1ar to that of female players. 3. It is estimated that the fact, that female players show obvious higher mean anaerobic power(p<0.001) during the 3,4KP excercise is due to sex differences in ocdurrence work load of maximal anaerobic power. 4. Comparison of blood lactate concentration at each work load in different types of sports and player's sex differences show an increase in proportion to mean anaerobic power. The results given above clearly show the differences between the type of sports such as rugby and hockey requiring power and speed, and the type of sports such as handball and soccer requiring edurance.