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김형석,신남철,이태호,박승조 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.2
To conditioning sludge to occure in the course of food processing industry, after culturing Rhoodotorula glutinis, dosing a certain amount of culture solution into the sludge and measured the variation of total suspended solids and then, in the aerobic and anaerobic conditions after manage sludge, examining the result of measured specific resitance, the coefficient of cmopressibility to know the dewateability. Arrangements of this result are as follows : 1) As the result of total suspended solids concentration by change of aeration time and the amount of Rhodotorula glutinis dose, optimal dose was Rhodotorula glutinis 10㎖ by 20㎖ sludge. The very suitable aeration time was 4-5days. 2) After dosing biological conditioner(Rhodotorula glutinis) 60㎖ by 11 sludge in aerobic condition, aeration for five days. The results of specific resistance, the coefficient of compressibility were 22.71×10^(5)m/㎏ 1.6, respectively. 3) In the cases of using Rhodotoruls glutinis for biological conditioner, using polymer for chemical conditioner. This results are as follows : Biological conditioner ; the moisture content of sludge cake 77.7% Chemical conditioner ; the moisture content of sludge cake 70.3% But, I author propose that biological conditioner is more useful than chemicals in the total operating and maintenance cost.
RFID를 적용한 항공물류 SCM 시스템의 설계 및 구현
형대진,김승구,이재윤,조현준,박경환 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
The present the information sharing among the subjects was not enough in Airway Logisctics Industry, because each subject use the independent system. The Airway Logistics Network is suggestion, but the Airway Logistics Network dose not operate with efficient connection, because each subject attached to the connection among the internal system. If the RFID system which one of Auto-ID systems is introduce into Airway Logistics, an efficient management of Airway Logistics will be possible. In this Paper, we introduce the RFID system into Airway Logistics SCM system for an efficient management and an efficient information sharing. We also develop Airway Logistics SCM system with priority given to Forwarder which is occupy an important position in Airway Logistics industry.
MgO 버퍼층을 이용한 PZT 박막의 형성 및 특성 평가
김지미,전호승,강재경,최형봉,김철주 서울시립대학교정보기술연구소 2001 정보기술연구소 논문집 Vol.3 No.-
In this paper, we fabricated the MgO layer by sol-gel method and estimated possibility as a buffer layer for ferroelectric such as PZT. MgO(Magnesium Oxide) proposed as buffer layer of ferroelectric is already for much used as buffer layer in optic technology. There are many formation methods of MgO layer, but in this study, we selected the sol-gel method which is easy to control the content of material and possible for fabrication of uniform layer, then we formed thin layer through the composition of MgO and PZT solution, spin coating and annealing. To estimate the possibility as buffer layer about ferroelectric layer, we analyzed the physical and electrical characteristics about PZT on MgO layer.By SEM, AFM and XRD analysis, we could know facts that the surface condition of PZT on MgO was relatively smooth and the crystal orientation of PZT was enhanced by MgO layer. Due to the measurements of P-V, C-V and I-V characteristics of PZT/MgO capacitor structure, the polarization, fatigue and breakdown properties of PZT on MgO were much improved than those of PZT without MgO layer. Also, in MFIS structure, the PZT on MgO showed the stable memory property. These results could be compared to those of MgO buffer layer formed by sputtering, so, if studies about the composition of MgO solution and the formation of MgO layer are executed continuously, the fabrication process of MgO layer by sol-gel method can be applied as the process for buffer layer of ferroelectric.
RFID를 활용한 3차원 물류 창고 관리 시스템의 설계 및 구현
형대진,김승구,이재윤,박경환 東亞大學校附設 淸報技術硏究所 2006 情報技術硏究所論文誌 Vol.13 No.2
At present, a business management is managing to minimize a investment or a stock cost for a warehouse. So the essential point of warehouse's function is exchanged to attach greate important to information technology and client services. But the existing warehouse management systems have many weak points in part of information technology and client services. In this paper, we suggest the plan of introducing the RFID system into warehouse management system for an efficient management. We also develop warehouse management system to show in realtime 3D a location information of goods in the warehouse.
OpenGL에 기반한 전자부품 3D 그래픽 툴의 설계 및 구현
김승구,조현준,형대진,박경환 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1
Up to the present, we have used general 3D modelling tool for 3 dimensions visualization of electronic parts. If we use general 3D modelling tool, we are consumed many time and effort because it is not optimized modelling of electronic parts. Therefore we need technical 3D modelling tool for electronic parts. In this paper, in order to solve this problem, we develop the graphic tool that model and visualize the electronic parts as 3 dimensions.
상악동에 발생한 거대한 Cholesterol 육아종 1례
김승찬,박형욱,김용기,나한조,도남용 朝鮮大學校 附設 醫學硏究所 1991 The Medical Journal of Chosun University Vol.16 No.1
The cholesterol granuloma is not a specific clinical or pathologic entity but merely a term used to describe a tissue response to cholesterol crystal. The cholesterol granuloma in paranasal sinuses is rare disease. Recently the authors had experienced a case of huge cholesterol granuloma, which involved the right maxillary sinus. The cholesterol granuloma was removed successfully by mean of enucleation through the Caldwell-Luc approach. So, we report a case with brief review of the literature.
GIS 및 지진취약도 분석기법을 활용한 창원시 교통망의 내진위험도 분석
이형진,김성훈,최승용 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-
Recently seismic fragility analysis method has been widely used for the seismic probabilistic risk assessment of infrastructures such as nuclear power plants, buildings and bridges because of its probabilistic characteristics. Furthermore, this technique has been applied to large-scale social system consisted of each infrastructures by combing GIS. In this paper, the applicability of this technique to domestic infrastructure system. Example studies were performed about Changwon city. Nonlinear time history analysis, with a maximum likelihood approach were analysis of whole infrastructure systems. The results shows that it can be very useful to predict seismic probabilistic risk assessment of this domestic transportation network. However, it is also shown that further studies such as more suitable damage criterion to domestic structure and precise nonlinear analysis techniques should be developed to predict more precise results.
형대진,김승구,조현준,박경환 동아대학교 정보기술연구소 2006 情報技術硏究所論文誌 Vol.14 No.1
In this paper, we introduce the method for developing the mobile 3D game engine based on the WIPI platform which has been proposed as the mobile standard platform. Our game engine is designed so that it supports OpenGL-ES and JSR-184 that are mobile 3D graphic APIs. Our game engine has a mobile emulator operated on PC and SDK to support mobile programming in PC environments. Mobile 3D game developers can use the APIs at various levels. Also, the game engine is developed in modular in order to support various game genres.