인천국제공항 탑승동에 적용 가능한 적정 공조시스템에 관한 연구

석호태,정만석,김지현,여명석,김광우 대한건축학회 2005 대한건축학회논문집 Vol.21 No.1

Generally, indoor thermal environment control consumes much energy in the building Appropriate performance evaluation of the building and HVAC facilities are achieved by an energy simulation The result Which does the energy simulation of property HVAC system in airport Primary, there seems to be reasonable method which save window conduction loads and solar radiation loads on the element for an energy saving Secondly, According to the existence of contact outside in building Loads, the Important factor of influence is divided into solar radiation, window conduction loads and interior loads(lighting, equivalent, occupancy etc) The last, the result which does the energy simulation of each HVAC system, CAV + V AV System is determined profitably in energy performance

동영상에서 배경프레임을 이용한 차량 프레임 검출

정지문,남석우 남서울대학교 공학연구센터 1999 공학연구 Vol.1 No.-

As the result of recent rapid development of multimedia technology, video database system to retrieve video data efficiently seems to be core technology field. This paper describes an efficient automatic frame detection and location method for content based retrieval of video. Frame extraction part consists of incoming / outgoing car frame extraction and car number frame extraction stage We measure start/end time of car video also car number frames. Frames are selected at fixed time interval from video and key frames are selected by color scale histogram and edge operation method Car frame can be recognized by content based retrieval method

딜티아젬 함유 코아 펠렛으로부터 약물의 용출에 미치는 폴록사머 함량의 영향

이승우,감성훈,홍지웅,최기송,박은석,지상철 한국약제학회 2002 Journal of Pharmaceutical Investigation Vol.32 No.4

In order to evaluate the effect of poloxamer 407 content on the dissolution profiles of pellets, diltiazem HCl (DTL) core pellets were prepared with poloxamer 407 (50∼90% w/w, with lactose as filler) using an extruder and a spheronizer. Any possible interaction between the drug and excipients was evaluated using DSC, IR and TLC. Dissolution tests were performed using USP basket method. In addition, scanning electron micrograph was performed to examine the surface roughness and cross sections. The release of DTL from the core pellets was decreased with increasing poloxamer 407 content. Cracks appeared on the surface of the core pellets with increasing the poloxamer 407 content, which may play a role on the retardation of the release of DTL from core pellets. There was no any significant interaction between the drug and excipients employed to prepare the core pellets.

建物 디자인 槪念 導出因子의 選好에 관한 硏究

류임우,정지석,최무혁 대한건축학회 2004 대한건축학회논문집 Vol.20 No.3

The purposes of this study were two facts. The one is to analyze the preference of concept determinants according to the use of building and the characteristics of site. The other is to propose value through comparing preference of concept determinants of applicants and investigators. In order to acquire those, the literal investigation of domestic bimonthly which is A&C is employed as a means. Targets of research were 418 buildings which were attended domestic competition from 1996 to 2001. Survey of research investigated frequency of concept determinants that apply in these buildings. In the results, We could find two categories, five dimensions and 18 elements from the concept determinants. Also, we could prove that it was difference in preference of design concepts, according to use of building and characteristics of site, and difference partially between applicants and investigators in concept preference. These results can be used for measure for building estimation and can be used for guide, when architects establish concepts for design of buildings in design field.

퍼지시스템과 진화알고리즘 기반 지역부하예측 시스템개발

張右晳,指眩旻,姜渙一 명지대학교 산업기술연구소 2006 産業技術硏究所論文集 Vol.25 No.-

This paper proposes a time series prediction method for the nonlinear system using the fuzzy system and the evolutionay strategy and the genetic algorithm. At first, we obtain the optimal fuzzy membership function using the evolutionary strategy or genetic algorithm. With the optimal fuzzy rules and its input differences, a better time prediction series system may be obtained. We obtain a good result for the time prediction of the regional electric load. In addition we implement the graphic user interface for the proposed algorithms.

노인 인구에서 신경인지기능저하와 혈청 지질농도와의 상관성

유영선,최석주,정성수,김지은,윤성욱,전동욱,백준형,박성우,이정구,추일한,김영훈 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.6

Objectives : In this study, the authors evaluated the correlation between eurocognitive impairments and serum lipids levels among Korean elderly over the age of 65. Methods : A total of 609 elderly individuals participated in this study. Screening for cognitive impairments were carried out using the Mini-Mental Status Examination-Korean version (MMSE-KC). There were 197 subjects above 1.5SD Of MMSE- KC and they were evaluated using the Korean versions of the Consortium to Establish a Registry for Alzheimer's Disease (AD) (CERAD-KC) and Geriatric Depression Scale (GDS-K). Results : There was a correlation between old age/low levels of education and AD (p<0.05, P<0.01). There was an inverse correlation between the serum level of total cholesterol and the word list recognition test scores. The serum levels of LDL cholesterol were inversely correlated with the scores on the constructional praxis test, word list recall test and word list recognition test. Inverse correlations between the serum level of triglyceride and scores on the word list recall test and word list recognition test were also observed. Conclusion : There were inverse correlations between the serum levels of lipids and language/memory function in subjects with AD.

사질지반 NATM 터널의 강관보강 효과에 대한 모형실험

임종철,장지건,홍석우 釜山大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.55 No.-

사질지반에서 얕은 터널 굴착시 지표면의 침하억제와 막장의 안정은 필수적이다. 이를 위해 적정한 보조공법을 사용하여 지반을 개량하여야 한다. 그러나 이러한 보조공법에 관한 메터니즘이 아직 명확하게 밝혀지지 않고 있다. 본 연구에서는, 강관을 사용한 보조공법의 메커니즘을 연구하기 위해 모래로 지반을 조성하여 실험을 실시하엿다. 그 결과는 아래와 같다. 1) 주동상태는 건조모래(w=0.28%)에서는 ΔL/D≒0.0025일 때, 함수비 (w)=1.8% 에서는 ΔL/D≒0.005일 때 발생하였다. 여기서, D : 터널의 지름, ΔL : 막장의 후퇴변위 2) 모형지반의 함수비가 1.8%일 때는 보강재의 길이가 0.7D이상이면 충분한 지지력을 얻을 수 있다. 3) 막장전면에 작용하는 주동토압은 무라야마(村山)의 방법에 의한 이론값이 모형실험에서 구한 실측값보다 크게 나타났다. To excavate the shallow tunnel in sandy ground, it is essential to Keep stablity of face and to reduce the settlement of ground surface. For these purpose, we should improve the strength of the ground by using appropirate auxiliary method. But the effect and mechanism of the auxiliary method is not proved clearly yet. In this study, the model tests were preformed on the sandy ground to study the mechanism of auxiliary structure by steel pipe. Test results are as follows; 1) The active state occurred at ΔL/D≒0.0025 on dry sand and ΔL/D≒0.005 on wet sand (w=1.8%). where, D;diameter of tunnel, ΔL:backward displacement of tunnel face. 2) The enough bearing capacity was obtained. when the length of reinforcement is larger than 0.7D in the case of wet sand. 3) The active earth pressure on the face, the value by Murayama's method is larger than the measurement value by the model test.

하수 2차 처리수 재이용을 위한 저압 및 중압 고도산화시스템의 성능평가

안규홍,안석,맹승규,김기팔,홍준석,정민우,권지향,Ahmed, Zubair 대한상하수도학회 2003 상하수도학회지 Vol.17 No.4

In the present study, the feasibility of UV/H₂O₂ systems was investigated using low and medium-pres sure lamps on biologically treated wastewater effluents for secondary effluent reclamation. Two types of UV lamps were used as the light sources (a 33W lowpressure mercury lamp and a 350-W mediumpressure mercury lamp). The results from these UV systems showed that the removal of organic compounds could be achieved in the contact time of longer than 30min (i.e., low UV doses). Efficiencies of color removal and disinfection were far better than those of organic matters measured as TOC, DOC and TCOD_(cr). In the low pressure lamp UV system, it has been found that DOC and color removals were 60.9 and 86.2% with 50㎎/L of H₂O₂ and contact times of 30 minute, respectively. Whereas, with the mediumpressure lamp UV system, TOC, DOC and color removal were 27.1, 5.6 and 95% with 14.3㎎/L of H₂O₂ and 14 minute of contact times, respectively. Both systems could be applied for the reclamation of secondary effluent treated with biological treatment processes.

일부 자동차 공장 근로자들의 職業的 特性과 社會 心理的 Stress의 相關性 硏究

김성삼,홍지우,한현정,최희석,권소희,정해경,김삼태,송용선,이기남 한국전통의학연구소 2004 한국전통의학지 Vol.14 No.1

〈Objective〉 This study were carried out to study to assess the relationship between job characteristics, general characteristics, health behaviors, and psychosocial distress and suggested the preventive oriental medicine approaches in occupational health area. 〈Methods〉 We measured job characteristics(job demand, job control, jop insecurity) by The Karasek's Job Content Questionnaire, health behaviors(smoking, drinking, exercise, coffee), general characteristics at work by a self-administered questionnaire. Psycho social distress was measured by PWI(Psychosocial Well-being Index), a 18-item self- administered instrument. 370 data for research were collected through the process of oriental health examination with questionnaire in workplace. Statistical analysis was done by t test, oneway ANOVA, and hierarchical multiple regression analysis with SPSSWIN (version 10.0) 〈Results〉 Among the 152 respondents, the prevalence of high job strain was 27%(41 persons). The Odds ratio of high job strain was 3.11(95 2.12~4.11), and those of passive group and active group were 2.01(95 0.83~2.76) and 1.80(95 0.83~2.76), respectively. Our results supported the association between psychosocial distress and job strain. 〈Conclusion〉 The odds ratio of high strain isolated group(high strain group+low social support) was 3.59(95 2.05 5.13), but the odds ratio of high strain collective group was 1.32(95 0.23 2.41). Social support at work was modifing factor of the association between psycho social distress and job strain. Therefore we reviewed the evidence that economic depression was associated with psycho social distress in this study, and that the strength of the social support was important in maintain health.

법랑아세포종에서의 p53 및 MIB-1 발현 : 임상 및 병리학적 요인들간의 연관성 Correlation Between Clincopathologic Parameters

이수운,한지용,권창석,윤혜경,김우형,이희철 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.4

Thirty five patinets' paraffin embedded biops block , which was previously diagnosed ameloblastoma and obtained from oral and maxillofacial surgery dept. of pusan paik hospital and OMS dept of collage dentistry, pusan national university hospital, from January 1994 to march 1999, were performed immunohistochemistry with p-53 and MIB-1. On investigating the expression, correlation between clinical and histologic factor and correlation between prognosis and moleculopathologic property were examined. And we obtained the following results; 1. Age over forty, recurrence rate was 58.5%. 91.4% of the tumor was developed on mandibule, recurrence rate of maxilla area tumor was 66.7% On radiologic and histologic feature, multilocular and follicular type has high recurrence rate but no significance statistical difference was found 2. Expression of p-53 was 25.7%, When underage of forty. location on mandibule, multilocular and plexiform type, the expression of p-53 was somewhat higher and recurred cases of tumor, expression rate was 12.5%. 3. MIB-1 expression rate was 77.1%. When location on mandibule, unilocular, plexiform type tumor and previously recurred case, MIB-1 expression was 87.5% which was somewhat higher than no recurrence case of 74.1%. 4. 33.3.% of positive on MIB-1 have expression of p-53 and all p-53 positive case express MIB-1 positive. All p-53 positive case have high cell proliferation rate. From this result, age and location have closely related with the prognosis of tumor, histologic feature and MIB-1 expression has related with the prognosis of tumor. But p-53 has highly expressed on cell proliferation area, not closely related with the prognosis of tumor.