고로슬래그시멘트를 사용한 다공성 황토콘크리트의 성능 평가

김황희,강수만,박종식,박상우,전지홍,이진형,차상선,박찬기,Kim, Hwang-Hee,Kang, Su-Man,Park, Jong-Sik,Park, Sang-Woo,Jeon, Ji-Hong,Lee, Jin-Hyung,Cha, Sang-Sun,Park, Chan-Gi 한국농공학회 2010 한국농공학회논문집 Vol.52 No.3

This study aims to evaluate a porous concrete using hwang-toh, blast furnace slag and blast furnace slag (BFS) cement instead of type I cement. The tests that were carried out to analysis the properties of porous hwang-toh BFS cement concrete included compressive strength, continuous void ratio, absorption rate, and pH value, repeated freezing and thawing test were conducted. Test results indicated that the performance in porous hwang-toh concrete are effective on the kaoline based binder materials. The pH value were shown in about 9.5 ~ 8.5. The compressive strength was increased and void ratio was decreased with increasing the kaoline based binder materials, respectively. The void ratio and compressive strength were in the range of about 21 ~ 30 %, 8 ~ 13 MPa, respectively. The increased in void ratio of more than 25 % is showed to reduce the resistance of repeated freezing and thawing. Also, the resistance of repeated freezing of thawing and the compressive strength of porous hwang-toh BFS cement concrete are independent with hwang-toh content and BFS cement amount. But, the void ratio was decreased with increasing the high volume hwang-toh contents (more than 15 %).

방광질루 치험

황선태,이종찬,양상국,김홍섭,노용수 건국대학교 의과학연구소 1996 건국의과학학술지 Vol.5 No.-

Vesicovaginal fistula is a distressing complication which may follow hysterectomy, prolonged labor, chemical cauterization due to uterine prolapse, radiation therapy and cervix cancer. The management of vesicovaginal fistula still remains controversial in regard to the type of approach and timing of repair but the classic opinion is to wait 3 to 6 months to allow the surgical inflammatory reaction to subside. We experienced 4 cases of vesicovaginal fistula which were as follows; Case 1: 51-year-old The vesicovaginal fistula, about 3.0cm in diameter, after laparascopic hysterectomy 15 days ago was repaired with interposition of a gracilis muscle flap via the transvaginal route. Case 2: 38-year-old The vesicovagianl fistula, about 2.5cm in diameter, after Cesarean section 5 years ago was repaired with interposition of the omental flap via the transabdominal route because she had been accompanied by an overian cyst. Case 3: 46-year-old The vesicovaginal fistula, about 2.5cm in diameter, after manual self abortion at home 30 years ago was repaired with interposition of fibro-fatty tissue in labia via the transvaginal route. Case 4: 43-year-old The vesicovaginal fistula, about 2.0cm in diameter, after prolonged labor 12 years ago was repaired with interposition of the fibro-fatty tissue in labia via the transvaginal route. There noted no complications or recurrence during the minimal 1 year follow-up.

Fuzzy 이론을 이용한 건설공사의 리스크 분석 방법

황지선,한현종,신종현,이찬식 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

The purpose of this paper is to develop a risk analysis method using fuzzy theory for construction projects. Construction risks are generally evaluated as vague linguistic value by subjective decision making. Fuzzy theory is a proper method to quantify vague conditions of construction activities. Therefore, this study utilizes fuzzy theory to analysis construction risks. Risks are identified and classified into two levels such as upper level risk factors and lower level risk factors by RBS(risk breakdown structure). The risk exposure of lower level risk factors is assessed using fuzzy inference individually and their absolute and relative weights are estimated by fuzzy measure and AHP respectively. The estimated risk exposures and weights are aggregated to assess the risk exposure of upper level risks by Choquet fuzzy integral.

교육과정 모델 설정을 위한 실증적 연구 - 경영정보계열의 교과교육과정을 중심으로 -

김찬곤,이종성,황성윤 東國專門大學 2002 金龜論叢 Vol.9 No.1

현대의 교육은 학생 개개인의 기본 능력을 함양하는 동시에 수준별, 직업과정별, 전공별로 각자가 지닌 소질과 적성, 창의력을 최대한 신장시켜주는 것이 필요할 것인 바, 따라서 사회적 변화와 다양한 문화에 능동적으로 대처할 수 있는 교육과정의 설정은 매우 중요한 의미를 지닌다고 할 수 있을 것이다. 이에 본 연구는 교육의 목표를 달성하기 위해 '교과 내용학적 측면'의 변수들과 '교과 교육학적 측면'의 변수들이 '교육의 목표 달성'에 어떠한 영향을 미치는지를 통계적으로 검정하고자 하였다. 본 논문에서는 상업교육, 경영교육 등의 진공분야인 상업·정보에 대한 교육과정을 이론적으로 검토하고, 새로운 지식정보화사회에 부응할 수 있고 사회의 상황변화에 능동적으로 대처 할 수 있는 미래지향적인 교육과정의 모델을 제시하여 그 타당성을 분석하였다. 연구목적을 달성하기 위하여 교과내용학적 측면의 변수와 교과 교육학적측면의 변수들은 교육의 목표달성에 정(+)의 영향을 내칠 것이다라는 가설을 세웠다. 연구결과, "교과 내용학적 측면의 변수들은 교육의 목표에 정(+)의 영향을 미칠 것이다"와 "교과 교육학적 측면의 변수들은 교육의 목표에 정(+)의 영향을 미칠 것이다."는 모두 채택이 되었으며, 특히, 교과 교육학적 측면의 변수들과 교육의 목표간 서로 관련성이 높은 것으로 드러났다. 이와 같은 연구의 결과는 다음과 같은 시사점을 제공한다고 볼 수 있다. 즉, 교과 교육학적 측면의 변수들과 교육의 목표간의 영향을 미치는 정도는 교과 내용학적 측면의 변수들보다 상호 관련성이 높은 것으로 나타났다. 특히, 교과 교육학적 측면의 변수들은 '직업과정별 교과교육'이 교육의 목표 달성에 미치는 영향의 정도가 높은 것으로 드러나 효율적인 교과 과정의 문제에 대하여는 이 변수에 대한 교육학적 배려가 반드시 필요할 것으로 나타났다. 그러나 본 연구는 교육과정개발 설정에 대한 소수의 응답자들의 응답결과를 일반화하는데 따른 보편적인 문제와, 응답결과의 타당도와 신뢰도 검정이 선행되지 못함에 기인하는 일차적 오류의 가능성을 지적할 수 있으며, 특정시점에서의 특정 집단을 대상으로 조사 연구한 것임으로 인한 통계적 결함도 있을 수 있는 바, 앞으로는 보다 정교하고 세련된 연구가 필요할 것으로 여겨진다.

민간투자 사업시행자 선정절차 모델 개발

한현종,황지선,신종현,이찬식 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

Since「the Act on Private Participation in Infrastructure(PPD)」was established in 1998, a number of projects have been procured by private-sector-initiatived system for infrastructure development. However, there are many shortcomings in the procedure of selecting project promoter for the domestic-PPI projects due to deficient regulations, lack of investment appetites, necessary skills and experiences, etc. An improved promoter selection procedure is necessary to select a competent project promoter and to foster participation of the private party. The purpose of this study is to suggest a procedural model for selecting competent project promoter. This model was made by comparing our regulations and procedures with foreign nation's. The suggested model is comprised of PQ, two phased evaluation system for proposals. To manage the overall procedure well, an involvement of professional "project promoter selection team" would be highly recommended.

당뇨병 환자의 안면부 파라핀 주사부위에 발생한 피부 모균병

김종현,황소민,전재용,배용찬 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3

Mucormycosis is an opportunistic fungal infection caused by the mucorales, which consist of the Rhizophus, Absidia, Mortierella, and Mucor. The diverse clinical forms of mucormycosis can be categorized as rhinocerebral, pulmonary, disseminated, gastrointestinal, cutaneous and miscellaneous. Although it can cause disease in healthy people, it most commonly affects patients who are diabetic or immunosup-pressed. Rarely, mucormycosis develops confined to the subcutaneous tissue. We experienced a case of cutaneous mucormycosis developed in a well-controlled diabetic patient who had previously injected foreign material on her face for an aesthetic purpose at the behest of an unlicensed physician. The patient had tissue necrosis and purulent discharge on her left cheek. Following histologic examination, we diagnosed the condition as cutaneous mucormycosis and treated it by wide excision combined with amphotericin B therapy. The disease was cured without any significant sequelae within 6 months of follow up. Cutaneous mucormycosis is rarely reported but it can cause facial deformity due to tissue necrosis, so that early diagnosis and appropriate treatment are important. Currently, foreign material injection for aesthetic purposes is still performed by unlicensed physicians. We present a case report concluding that one should consider the possibility of fungal infection in skin lesion in diabetic or other immunosup-pressed patients. We also emphasize the seriousness of illegal injection of foreign material.

홍국균의 최적배양조건에 관한 연구

정순택,임종환,박양균,황금택,박현진,안찬영,강성국,문길만 木浦大學校 工業技術硏究所 1994 工業技術硏究誌 Vol.4 No.-

Cell growth and pigment productivity of Monascus anka KCCM 11832 and Monascus sp. has isolated from the Korean Maeju(soybean koji) were determined for effect of culture medium composition and incubation conditions. Increase of NH₄NO₃, and KH₂PO₄ concentration as mineral source promoted mycelium growth, and the highest cell growth was showed in the medium with 0.05% KH₂PO₄ when C/N ratio is 20:1, but pigment production was significantly inhibited at higher concentration than this level. Cell growth and pigment production in porato dextrose medium were higher than those in czapeck-dox broth and malt extract medium. In terms of temperature, the highest cell growth was showed at 34℃, but pigment productivity was the highest at 26℃.

지역사회 정신의학 전공의 교육과정 실태조사

홍진표,황순찬,이영문,이선형,신나리,이종일,박종익,장동원,정인원 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.1

Objectives : There is a increasing need to recruit and retain more psychiatrists who can plan and implement organized programs to work with chronic mentally ill patients in community settings. The aim of study is to discover what training is currently in place to prepare psychiatrist for work in "community" or "public" settings. Methods : Survey questionnaires were mailed to 85 residency training directors and 10 leaders of community mental health in 2005. Response rate was 75%. Results : Academic seminar about community mental health were not administered to residents in 63% of training hospitals. Forty one out of 64 training hospitals had community mental health rotation programs, Community mental health center (50%) and day hospital (36%) were the most common type of programs. Few general hospital had affiliation with community mental health programs. The amount of time for clinical rotation varied from less than three months part time to 6 months fulltime, with most frequent form of one day per week for three month in second or third year of psychiatry residents. Conclusion : Further steps are needed to improve residency training curricula and to encourage well qualified psychiatrist to choose careers in community psychiatry.

도시특성을 고려한 교통유발계수 산정에 관한 연구 : 대전시를 중심으로 In the City of Daejeon

김명수,전찬용,황현종 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-

The biggest problem in urban transport is congestion. The purpose of this study is to understand "Electronic Road Pricing System, which is one of the traffic demand control plan for relieving such a traffic congestion, and look for the plans to improve it. For this, traffic inducement coefficient was selected, which shows the regional characteristic of Daejeon through investigation on each facility. As one can see from the investigated inducement coefficient, the same type of facilities show different characteristics. Also, it is thought that per unit burden charge that has been maintained for over 20 years should be raised relevantly in consideration to inflation. Also, it is thought that several ways have to be sought for the facility owners' active participation in the traffic volume reduction program. Studies like this research would bring the following items as their effect; Relieve traffic congestion(partly) and reduce the passage time. Personal benefits following fuel cost etc. Socio-economic effect following logistics cost and environmental pollutants etc.

선인장 양심실 보조장치의 설계 및 임상적용을 위한 평가

민병구,박찬영,최재순,이혁수,황창모,김삼성,윤걸중,김종원,선경,이경갑,정종태,김원곤 제주대학교 인공심장이식연구소 2001 인공심장 연구 Vol.2 No.1

현재 개발되고 있는 맥동형 이식형 인공심장은 완전이식형 인공심장과 좌심실보조장치 뿐이다. 좌심실보조장치를 장착한 환자의 10~15%가 우심실의 보조를 필요로하고 완전이식형 인공심장의 장착을 위해서는 자연심장을 제거해야하는 상황에서 이식형 양심실보조장치에 대한 필요성이 대두되고 있다. 본 연구진은 완전이식형 인공심장으로 개발된 한국형 인공심장을 개선하여 양심 실 보조장치를 개발하였다. 양심실보조장치는 이동형 작동기식 미케니즘을 이용하고 있으며 에너지 변환장치와 감속기로 구성된 작동기와 혈액주머니, 그리고 내장형 제어기로 구성되어 있다. 선인장 펌프로 명명된 KAH350은 캐뉼라의 연결을 위한 커넥터를 포함하여 길이 177mm, 폭 164mm, 높이 67 이고 무게 780g이며 최대 심박출량은 5L/min 이다. 양심실보조장치로 개발된 선인장펌프는 좌심실보조장치로도 응용이 가능하다. 이식적합성과 생체적합성을 평가하기 위하여 좌심실보조장치로 5회, 양싱실보조장치로 6회의 동물실험을 수행하였다. 각각 최장 28일간 생존하였으며 11회의 동물실험중 장치의 결함에 의한 것이 3회 있었는데 이들은 모두 전자장치의 결함과 방수처리문제였다. 현재 이식적합성과 일박출량을 향상시킨 KAH400모델이 개발중이다. The types of pulsatile implantable artificial hearts that are on the way of development and have been developed are totally implantable artificial heart and implantable left ventricular assist device (LVAD). Approximately 10% to 15% of all patients Implanted with wearable VADs have required right heart support with another device. And it is reluctant to patient who should remove his or her own heart to be implanted with total artificial heart. These situations drive the development of implantable bi-ventricular assist device (BVAD). The Korean BVAD was develophed by modifying the moving actuator type Korean artificial heart. This electro-mechanical BVAD comprises actuator including energy converter and reduction gear train, blood sacs, and internal motor and energy controllers. The KAH350 which is named as 'Cactus Pump' is 177mm in length, 164mm in width, and 67mm in thickness including connectors and nuts. The weight and maximum cardiac output of Cactus Pump is 780g and 5L/min, respectively. The Cactus Pump that was developed as BVAD could be used as LVAD by attaching compliance caps on the 2 ports of one ventricle. The animal experiments were undergone 5 times for LVAD, and 6 times for BVAD. The best records were 28 days survival in both applications. There were 3 times of device failure and they were all associated with electrical connection and hermetic sealing. The KAH400 that has improved anatomical fitting characterisitcs and stroke volume is on development.