능동규칙에서 시간사건의 처리 모델

옥수호,홍규완 동의공업대학 1999 論文集 Vol.25 No.1

In this paper, We have classified temporal events in active rule, studied the properties of them, and implemented the SQL-like temporal event definition language and the temporal event processor. Temporal events are classified into primitive events and composite events. Primitive events are defined as absolute-time events and database operation events with an event modifier, PRE or POST. Composite events are defined as relative time events, periodic events, aperiodic events, disjunction, conjunction and sequence. For processing temporal events we have designed the Temporal Event Preprocessor(TEP) and the Temporal Event Detector(TED). The TEP consists of parser, database operation event transformer, and query executor. The TED consists of initializer, absolute-time event detector, database operation event detector, and composite event detector. TEP and TED have been implemented as a front-end system running on the extended relational active database system, PostgreSQL V6.0, and tested using various business applications.

양친매성 유기점토를 이용한 중금속과 유기 오염물질 동시제거 기술

옥용식,임수길,김정규 한국환경농학회 2003 한국환경농학회지 Vol.22 No.3

Although clay can sorb significant amounts of inorganic contaminants from soils and waste-water, the hydration of exchangeable cations in clay minerals makes it hydrophilic at the clay mineral surfaces and interlayers. Thus, natural clays are often ineffective in complexing and stabilizing toxic organic contaminants in soils and groundwater environment. But, substituting these hydrated cations with cationic surfactant such as QAC(Quaternary ammonium Compound) can change the natural clay from hydrophilic to hydropobic. Furthermore functionalized organoclay can act as a powerful dual function sorbent for both toxic metals and organic compounds. It also can be used as landfill clay liners, slurry walls, nano-composite materials, petroleum tank farms, waste treatment, and fflter systems. To use this modified clay minerals effectively, it is required to understand the fundamental chemistry of organoclay, synthetic procedures, its engineering application, bioavailability of sorbed ion-clay complex, and potential risk of organoclay. In this review, we investigate the use, application and historical background of the organoclay in remediation technology. The state-of-the-art of organoclay research is also discussed. Finally, we suggest some future implications of organoclay in environmental research.

영도지역 교육기관을 위한 가상교실 모델에 대한 연구

옥수호 고신대학교 영도발전연구소 2000 영도연구 Vol.2 No.-

Virtual class is an alternative methodology overcoming temporal and/or spatial limitations. Virtual class is applied to educational contents made by hypermedia, to discussion of special topics, to annoucement of news and notices, and to assignments for students and for teachers. To develop a model of local based virtual class in Youngdo-Gu, Busan there are several requirements. These are as follows: a. Inexpensive cost for implementing and for managing of open softwares, b. Easy pathway to nearby offices for the supports of professional skills and tools of humanwares as well as for those of hardwares and softwares. c. Good cooperation among main developers for making specific contents and for managing them. In this study, a virtual class running on the Linux machine was designed and implemented for the students of 3rd to 6th grades of elementary schools using Apache web server, MySQL DBMS, and PHP script language.

봉지종류 및 괘대시기가 ‘원황’ 및 ‘화산’ 배 과실의 수확기 품질에 미치는 영향

정억근,이욱용,안영직,이혁재,황용수,천종필 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

We tested fruits quality and skin coloration of two pear cultivar ‘Wonhwang’ and ‘Whasan’ produced by bagging with different kinds of paper bags in the Cheonan area, Chungnam Province, Korea. The fruits were bagged at 35, 45, 55 or 65 days after full bloom (DAFB) with 3 kinds of double layer paper bag which consisted of grey color, yellow color and newspaper for outer layer. The great extent of light interruption was observed in grey colored outer paperbag among three kinds of paperbag which showed only 0.46% of lowest light transmittance when compared with 43.7% and 40.0% of yellow paper and newspaper, respectively. The development of skin redness (a*) increased with the delay of bagging time in two pear cultivars. But the fruits treated at 65 DAFB showed uneven coloration and excessive development of redness which represented low fruit external appearance value. Uniform flesh firmness was attained at the fruits bagged with grey outer color paperbag regardless of bagging time, although the fruit quality indices including soluble solids and titratable acidity did not change significantly by using different kind of fruit bags and bagging time in two pear cultivar. Based on our results, it was explained that the grey-colored fruit bag had positive effect on the development of skin coloration without any detrimental effect on fruit quality factors in ‘Wonhwang’ and ‘Whasan’ pears.

직업성 천식에 관한 보건관리 체계

신수옥 京畿專門大學 1999 京畿專門大學 論文集 Vol.- No.27

A research on the occupational asthma occurred in the various industrial field has not been carried on intensively so far, even though there are a lot of studies on the occupational disease such as the lead poisoning, pneumonitis, noise-induced hearing loss etc. Which were typical occupational diseases in the past. It has been reported in the literature that about 10% of the asthma occurs due to the job oriented cause. A work in this paper is a study on the management of occupational asthma through the surveillance of occupational asthma occurred in industry. The results obtained are as follows. (1) Workers who handle the occupational asthma causing materials and have a job related to the occupational asthma should be checked carefully when they have medical examination. (2) A district department of industrial medicine should have an ability to carry on the work place management, to examine and treat the job-related patients.

박리형 고무계 점착제의 합성과 점착특성에 관한 연구

서영옥,설수덕 東亞大學校 大學院 1999 大學院論文集 Vol.24 No.-

The protective sheet does not suffer deformations such as gaps and no adhesive remains when the sheet is stripped off after use. The sheet maintains its initial adhesion strength even under elevated temperature conditions and retains good balance between protective properties over a long period due to good adhesion and strippability. We were investigated performance of pressure-sensitive rubber adhesive for automobile bodies that blending of acrylic adhesive by batch reactor. and we grafted acrylic monomer, styrene onto rubber and silicon bfore blending with acrylic adhesive. we examinated viscosity, temperature, heat treatment rate and peel adhesion. we can have good result in case of styrene in grafting on rubber. and silicon was accelerant for pressure-sensitive rubber adhesive used automobile bodies protection. in graft copolymerization with styrene concentration of styrene decided 35% of all. 35% grafted copolymers was blended well onto silicon.

Rifampicin에 의한 것으로 추정되는 위막성 대장염1예

김수현,이은우,정종혁,문승현,김동한,양혁승,오영상,김호동,김도현,박혁,박정환,박경옥,이영직 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.2

Pseudomembranous colitis, caused by altering the normal colonic flora and allowing the multiplication of Clostridium difficile, is an deleterious adverse effect of antibiotics. But it is rarely reported by rifampicin. Rifampicin is one of the first line drug in the treatment of tuberculosis and many patients are exposed to its potential adverse effects. We experienced a patient that had abdominal discomfort and hematochezia due to pseudomembranous colitis after receiving antituberculous medication, and which was probably caused by rifampicin. A 82 years old man was admitted with abdominal discomfort and hematochezia for one week. On the past history he had been diagnosed as endobronchial tuberculosis about 4 months ago. Colonoscopy revealed multiple discrete whitish mucosal lesion on rectosigmoid colon, and histologic findings were consistent with pseudomembranous colitis. The antituberculous agents were discontinued and vancomycin was administered. The patient's symptoms were resolved within several days. There was no recurrence after reinstitution of the antituberculous agents excluding rifampicin. We report here on a case of pseudomembranous colitis probably due to rifampicin.

Urban Entertainment Center 사업과 지역경제의 파급효과 분석

주수현,허정옥,진금옥,강상주 동의대학교 경제경영전략연구소 2006 經濟經營硏究 Vol.4 No.1

This research is designed for conducing spreading effects of regional economy by analyzing Input-Output Model(i.e. production model, employment model, value model, and income model). These measures of spreading effects in regional economy were determined by precise analyses of feasibility and demands of public businesses. That would be effective and confident polices and supportive for long time in the regional ecinimy. One of the most effectibe analysis on the spreading effects of regional economy is draw up Input-Output Model(IOM). This article, based on 2000 IOM of Busan Area, is focused that how the turbulence level of final demands affected spreading effects of regional economy, such as industrial production, value added, employment, incom etc. Also there were included the analysis of economic analyses of spreading effects on the UEC in the Centum City businesses.

인체 자궁암 세포에서 천연 성분이 P-당단백질의 활성에 미치는 영향

정수연,고은정,김나형,성민경,장정옥,이화정 이화여자대학교 약학연구소 2005 藥學硏究論文集 Vol.- No.15

Multidrug resistance (MDR) of cancer cells is, at least in part, associated with the overexpression of P-gly-coprotein (P-gp). Many studies hve demonstrated that natural compounds obtained from fruits, vegetables, teas and medicinal plants may modulate P-gp activity. The objective of the present investigation was to examine the effect of seven natural compounds on the P-gp activity in human uterine sarcoma cell line, MES-SA/DX5. Daunomycin uptake was significantly increased by biochanin A and silymarin (p<0.0001) whereas it was reduced by morin (p<0.01). The efflux of daunomycin from the cells was significantly inhibited by biochanin A, morin, cephalotaxine, berberine (p<0.05) and silymarin (p<0.0001). Biochanin A, berberine and silymarin significantly decreased IC_(50) value of daunomycin (p<0.05) while morin increased it (p<0.05). These results suggest that some natural compounds such as biochanin A and silymarin may inhibit P-gp funciton and can by developed as MDR reversing agents to improve the efficacy of chemotherapeutic drugs when administered concomitantly.

섬유상 담체 종류에 따른 생물학적 오수처리 비교연구

이수구,임병란,한종옥 서울産業大學校 1994 논문집 Vol.40 No.1

This study was performed to investigate the treatability of sewage from department store by attached growth biological treatment method using several fibrous media such as Supermodule made of polyvinylidine chloride and acry fiber(FBC), ringlace made of polyvinylidine chloride(HBC) and polypropylene(PP). The pilot plant was set up in the field of K department store and four consecutive aerated reactors were packed with each media and maintained in the condition of hydraulic retention time 12 hours. Experimental results showed that the effluent BOD concentration was stable even though the influent concentration was largely fluctuated in the range of 300~900㎎/L. BOD removal efficiencies in HBC, PP and FBC systems were 90%, 87% and 94%, respectively. The influent BOD was mainly removed in the first, second and third reactors and the removal rate in the fourth reactor was the lowest due to the low concentration and low influent load. The concentration of biomass attached to fibrous media was the highest in the FBC system compared with HBC and PP systems. Total concentration of volatile solids in the FBC system was 5,900 ㎎/L which was high compared with the other media systems. The production ratios of waste sludge were 9.2, 8.45 and 7.3 gDS/㎥ of influent sewage in HBC, PP and FBC systems, respectively.