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김광식,박훈립 국민대학교 생산기술연구소 2002 공학기술논문집 Vol.25 No.-
Vehicles must be parked at least temporarily at each end of a vehicular trip before the occupants can partake in their activity. Parking is therefore a fundamental component of urban transportation system. The parking problems however have been got from bad to worse due to high cost of parking improvement. The city governments have formulated the synthetic policies to solve the parking problems without considering the characteristics of night-parking. In this study the direction of the parking policies is presented.
Jung, Jae-Woon,Park, Ha-Na,Yoon, Kwang-Sik,Choi, Dong-Ho,Lim, Byung-Jin The Korean Society for Applied Biological Chemistr 2013 Applied Biological Chemistry (Appl Biol Chem) Vol.56 No.6
Characteristics of non-point source (NPS) pollution runoff from a public park in Gwangju, Korea were investigated. Results exhibited the highest pollutant concentrations at the start of the rainfall events due to their build-up and wash off processes. The average event mean concentrations (EMCs) were 27.8, 7.2, 56.3, 7.5, and 0.84 mg/L (range: 4.2-54.8 mg/L) for COD, (0.5-20.8 mg/L) for TOC, (22.3-138.4) for SS, (1.4-18.5 mg/L) for T-N, and (0.17-2.02 mg/L) for T-P, respectively. The study site presented a strong first flush effect for most rainfall events. However, no first flush effect was observed in rainfall events with small rainfall factors (e.g. intensity, amount, and runoff depth). On the other hand, the ratios of total pollution loads discharged by the first 20% of runoff volume were 32% for COD, 34% for TOC, 36% for SS, 42% for T-N, and 50% for T-P. Especially, $MFF_{20}$ (mass first flush) values of T-N and T-P were larger than those of other pollutants (COD, TOC, SS), indicating that T-N and T-P are easily transported by stormwater runoff from the public park. First flush management of T-N and T-P, therefore, is required for efficient water quality management of the public park.
Behavioural Semantics를 추가한 Database Transactions의 Modelling 및 Design
박영배,김광식 명지대학교 공학기술연구소 1986 공학기술연구소 논문집 Vol.1 No.-
Designing DB, in the conventional relational/network DBMS, the DB designer doesn't deal with behavioural aspect, but only with structural aspect. And semantic integrity control is needed for the relational/network DBMS based on extended E-R model for representing semantics of real world precisely. In this paper, defining the structure of extended E-R model and semantic integrity rules on this structure, Dynamic Operation has been designed by analyzing behaviour for maintaining the semantic integrity rules in the relational/network DBMS. Also, proposing the modelling technique of transaction to represent the behaviour of objects in this structure, we have designed the transaction using transaction scheme which is the result of modelling.
GIS에 의한 의사결정 시스템 구축에서 AHP의 적용기법
박재훈,양인태,최광식 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-
According to growing interest in environmental quality with improvements of a standard of livign site selection problems such as waste landfill sites, caused regional conflicts. This study investigates a waste landfill estimation method that was used to for storage, management, analysis and dispaly of encironmental information provided by geo-spatial information system(GLS) and analytic hieracchy process (AHP) as a decision-making method. If GLS is integrated with AHP, site selection problems of environmental hatred facilities shall be able to be very useful, because of AHP with flexibility which appropriately reflects opinions of the related group.
원광 뇌졸중 등록 자료를 통한 허혈성 뇌졸중의 임상 양상과 위험인자
박현영,장혁,박성욱,김요식,조광호 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.2
Background: To investigate clinical features and risk factors of stroke patients who lived in Korean rural area, we analysis Wonkwang Stroke Registry and compared with other studies. Methods: We filled out Stroke Registry in the consecutive patients with acute ischemic stroke from march 1997 to February 1999. We analyzed demographic data, risk factors and subtypes of stroke. All patients were divied into 3 groups according to their age. Stroke subtype was classified into large artery atherosclerosis(LAA),small vessel occlusion(SVO), cardioembolism(CE), stroke of other determined etiology(SOE), and stroke of undetermined etiology(SUE) by TOAST(Trial of Org 10172 in Actue Stroke Treatment). Results: Five hundred nine patients were included in Wonkwang Stroke Registry from march 1997 to February 1999. Mean age was 65.47±0.48 years old. The ratio of males to females was 1 : 0.78. SVO was the most frequent subtype(49%) of ischemic stroke, and then followed by LAA(27.5%), CE(7%), SOE(8.1%), and SUE(8.4%). The internal carotid artery(ICA) territory was involved in 59.3% patients. Vertebrobasilar artery territory involvement was noted in 37.5%, and 3.2% of patients showed multiple artery territory involvement. All patients had risk factor of ischemic stroke except for 14 patients. Mean number of risk factors was 1.7/patient. Hypertension(62.1%) was the most frequent risk factor, and follwed by smoking(26.3%), diabetes mellitus(25.9%), and hyperlipidemia(25.55%). Conclusions: These results showed that the proportion of ischemic stroke subtype was not concordant with other studies. It may be caused by different mode of living and ethnic difference. This study may afford further information on the characteristics of Korean rural area stroke.
朴元柱,李廣植 영남대학교 공업기술연구소 1984 연구보고 Vol.12 No.1
This paper shows the characteristics of sparkover discharge in flowing air with needle-needle gap. The results abtained from this study are as follows. 1) The sparkover voltage shows the nearly maximum value when the Reynolds number of flowing air ranges 9×10⁴to 10??. 2) Discharge path of flowing air can be analyzed by the theories of velocity for the gas. 3) The proportion of Sparkover voltage to Reynolds number increase with decreasing Reynolds number.