기대손실함수를 이용한 다특성치 파라미터 설계

조용욱,박명규 明知大學校 産業技術硏究所 2000 産業技術硏究所論文集 Vol.19 No.-

When designing the parameter on the multiple quality characteristics, there has been a study for optimization of problems, but there has been no former study on the possible conflicting phenomena in consideration of the correlations among the characteristics. To solve the issue on the optimal design for multiple quality characteristics, this study modelled the expected loss function with cross-product terms among the characteristics and derived range of the coefficients of the terms. The model will be used to determine the global optimal design parameters where there exists the conflict among the characteristics, which shows difference in optimal in optimal design parameters for the individual characteristics.

인위적인 원형질막과 세포내 저밀도막의 접합에 미치는 제4형 당운반체 단백질의 전이 및 조절인자에 대한 연구

조용욱,김창세,Paul F. Pilch 순천향대학교 1994 논문집 Vol.17 No.2

We tried to induce the fusion of plasma membrane and intracellular low density microsomal membrane, and evaluated about the regulatory factors(insulin, cytosol, ATP, GTP, incubation time and temperature) which may affect the fusion and movement of the glucose transporter 4(GLUT 4). We obtained the results as follows; 1) Membrane-associated fusion might be fairely well established, and we could confiremd that fact by western analysis. 2) Insulin stimulated the fusion and movement of the GLUT 4. 3) Cytosol showed the tendency to increase the fusion and movement of the GLUT 4, but its effect was not apparent. 4) Other regulatory factor such as ATP, GTP, incubation time and temperature did not affect to the fusion and movement of the GLUT 4. 5) There might be somewhat non-specific reaction when separate the plasma mem-brane and intracellular low density microsomal membrane after fusion. In conclusion, insulin apparently stimulated the fusion and movement of the GLUT 4, but ATP, GTP, incubtion time and temperature did not. Further study to reseparate more specifically the PM and LDM after fusion must be required to clarify the exact effects of various regulatory factors. Acknowledgments : The author thanks Prof. Paul F. Pilch for advice about manu-script and supply the monoclonal antobody of GLUT 4(1F8).

표면 조도의 변화에 따른 마찰 및 마멸 특성

조용주,이상욱,구영필,서만식 釜山大學校生産技術硏究所 1999 生産技術硏究所論文集 Vol.56 No.-

마찰과 미끄럼 마멸에서 표면 거칠기의 특성에 대한 효과는 실험적으로 볼-디스크 마멸 시험기를 가지고 연구되어졌다. 실험은 서로 다른 하중, 미끄럼 속도, 그리고 윤활유 점도 조건하에서 산술평균값, skewness, kutosis를 변화시켜 수행되었다. 음의 값을 가지는 더 낮은 skewness 또는 더 높은 kutosis의 표면조도를 가진 같은 상술평균 값에 대하여 더 낮은 마찰을 가지는 경향이 있다. The effect of characteristic of surface roughness on friction and sliding wear was studied experimentally with ball-on-disk type wear tester. The test was conducted with specimens those have varying arithmetic mean value, skewness and durtosis under the condition of different load, sliding speed and lubricant viscosity. The surface of the lower skewness in negative value or the higher kurtosis tends to have low friction for the same arithmetic mean value.

물류센터에서의 최적 서비스 수준을 결정하는 방법에 관한 연구

조용욱,박명규 明知大學校 産業技術硏究所 2000 産業技術硏究所論文集 Vol.19 No.-

The main objective of this research is to develop a model to select the optimal input service level for a distribution center-multi branch inventory distribution system. With the continuous review policy, the distribution center places an order for specific order quantity to an outside supplier, and the order quantity is replenished after a certain lead time. Also, each branch places an order for particular order quantity to the distribution center to satisfy the customer demands, and receives the replenishment after a lead time. When an out of stock condition occurs during an order cycle, a backorder is placed to the upper level to fill the unfilled demands. With these situation, variable demand and variable lead time are used for better industrial practice. Further, actual lead times with a generic lead time distribution are used in developing the control model. Under the actual lead time model, the customer service measures actually attained for the distribution center and each branch are explained as the effective customer service measures. Thus, throughout the optimal control (using computer search procedures), we can select the optimal input service levels for the distribution center and each branch to attain the effective service levels for each branch which is consistent with the goal level of service for each branch. At the same time, the entire distribution system keeps minimum inventories.

건축조형을 위한 스키마작용과 이미지

조용수,오신욱,김정현 東亞大學校 建設技術硏究所 2006 硏究論文集 Vol.30 No.1

The objectives of this paper aims at investigating the characteristics of image which appears by schema during the concept design process of an architect. The image is an efficient tool for the design process as well as a useful medium for creative design idea. It affects design process to interpretate given conditions and helps to shape the initial form at the elementary stage of design. The image is able to be translated as the expression of an architect's schema. Architects will create the final form of the design from this schematic images including his own design language. This paper searches the images affected on architect's projects, and verifies the influence of schema on the common images, and analyses the relationship between schema and image.

Ni-Zn-Fe₂O₄의 조성비에 따른 전파흡수특성에 관한 연구

조재원,신용진,조치현,문현욱 明知大學校 産業技術硏究所 1993 産業技術硏究所論文集 Vol.12 No.-

This paper describes a study on absorption properties of electromagnetic wave for the composition ratio of Ni-Zn-Fe₂O₄ Ni-Zn-Fe₂O₄was composed of 48∼51mo1% Fe₂O₃,18~22mol% NiO and 27∼34mo1% ZnO. The sintering of the composition was carried out at 1200℃ for 2 hours. Through the experiments, it was found that the resonance phenomenon occured at low frequency range for high permeability and vice versa. In the case .of the composition of 49mo1% Fe₂O₃,20mo1% NiO and 31mo1% ZnO, the bandwidth ranged from 0. 37GHz to 0.95GHz with the absorption thickness of 10mm. Also, In the case of the composition 51mo1% Fe₂O₃, 22mo1% NiO and 27mo1% ZnO. the bandwidth ranged from 0.45GHz to 1.2GHz with the absorbtion thickness of 6mm. Therefore, it is proved that electromagnetic wave absorbers can be fabricated successfully within the bandwidth range mentioned above.

폐탄광 배수에 의한 주변 화천 오염 실태 조사

조경숙,장용근,류희욱 崇實大學校 生産技術硏究所 1996 論文集 Vol.26 No.1

The survey was carried out to investigated the contamination of streams by the acid mine drainage originates from abandoned coal mines and coal refuse piles. The physico-chemical characteristics such as pH, sulfate and elements concentrations of waters and sediments in streams were analyzed, and the microbial activities in the sediments were evaluated by measuring dehydrogenase activities. In sites contaminated by the acid mine dranage, the pH of waters adn sediments declined to acid from neutral due to the accumulation of sulfate. Dehyfrogenase activities ranged from 12 to 170 ㎍-TPF·g-dry soil-¹·24h-¹in the contaminated sites, whereas teh uncontaminated sites had activities of 1,176-4,259 ㎍-TPF·g-dry soil-¹·24h-¹. Dehydrogenase activities were significantly affected by low pH of sediments, indicating that high strength of sulfate inhibited microbial activities. The concentrations of heavy matals such as Pb and Fe in contaminated sediment (37-46 ppm Pb; 46,000 ppm Fe) were much higher than those in the uncontamnated sediments. concentration of Al in the contaminated water acidfied by the abandoned coal drainage was in range of 11 to 42 ppm. compared with those in the uncontaminated sediments, the concentrations of Mn, Mg and Ca in contaminated sediments were low because of the leaching of them from soil to water by acidfied stream water.

Molecular and Cytogenetic Analysis of Transgenic Plants of Rice(Oryza sativa L.) Produced by Agrobacterium-mediated Transformation

Cho,Joon-Hyeong,Kim,Yong-Wook 한국자원식물학회 2004 Plant Resources Vol.7 No.1

To demonstrate the importance of transformation efficiency in independent event, molecular and cytogenetic analysis were conducted with genomic DNA and chromosome of transgenic plants produced by Agrobacterium tumefeciens LBA4404 (pSBM-PPGN: gusA and bar). Selection ratios of putative transgenic calli were similar in independent experiments, however, transformation efficiencies were critically influenced by the type of regeneration media. MSRK5SS-Pr regeneration mediun, which contains 5 mgL$^{-1}$ 수식 이미지 kinetin, 2% (w/v) sucrose in combination with 3% (w/v) sorbitol, and 500 mgL$^{-1}$ 수식 이미지 proline, was efficient to produce transgenic plant of rice from putative transgenic callus in the presence of L-phosphinotricin (PPT). With MSRK5SS-Pr medium, transformation efficincies of Nagdongbyeo were significantly enhanced from 3.7% to 6.3% in independent callus lines arid from 7.3% to 19.7% in plants produced, respectively. Stable integration and expression of bar gene were confirmed by basta herbicide assay, PCR amplification and Southern blotting of bar gene, and fluorescence in situ hybridization (FISH) analysis using pSBM-PPGN as a probe. In Southern blot analysis, diverse band patterns were observed in total 44 transgenic plants regenerated from 20 independent PPT resistant calli showing from one to five copies of T-DNA segments, however, the transformants obtained from one callus line showed the same copy numbers with the same fractionized band patterns.

가중치를 고려한 다특성치 파리미터 설계에 관한 연구

조용욱,박명규 明知大學校 産業技術硏究所 1999 産業技術硏究所論文集 Vol.18 No.-

Taguchi's parameter design is to determine optimal settings of design parameters of a product or a process such that the characteristics of a product exhibit small variabilities around their target values. the critical problem in dealing with mutiple characteristics is how to compromise the conflicts among the selected levels of the design parameters for each individual characteristic. In this paper, Methodology using SN ratio optimized by univariate technique is proposed and a parameter design procedure to achive the optimal compromise among several different response variables is developed. one new case studies are solved by the proposed method and the results are compared with ones by the sum of SN ratios, the expected weighted loss, the desirability function, and EXTOPSIS model.

Chitosan 濾過 System을 利用한 새로운 中水道 工程의 開發과 溫泉水 淨化에 관한 硏究

김용범,백광욱,안병제,조영주,심재용 서울産業大學校 1994 논문집 Vol.39 No.1

각종 금속이나 중금속을 비롯하여 각종 오염물(SS, COD, BOD, CI 등)을 강력히 흡착제거하는 성능을 가진 chitosan(Cs)응집제와 여과사(SF) 및 활성탄 column(ACC)을 병용하여 hotel잡수와 온천사용수등의 정화실험을 행하여 생물학적 처리과정을 생략할 수 있는 사용수의 재활용 process(Fig. 1)를 개발하였다. 이 process에서 hotel 잡수의 경우 20ppm의 chitosan 투입으로 1차응집 처리하여 약 60%이상의 오염물을 제거한 후 여과사와 활성탄 column을 이용하여 최종적으로는 80~99%의 오염물을 제거할 수 있었다. 또한 온천수의 경우 20ppm의 chitosan 투입으로 1차응집 처리하여 약 50%이상의 COD와 BOD의 제거율을 달성할 수 있었다. 따라서 이러한 process를 산업현장에 적용할 경우 종전의 생물학적 공정을 생략하거나 소규모화하여 보다 간편하며 처리공간이나 경비등을 절감하면서도 사용수를 방류수 또는 재활용수 기준이내로 처리할 수 있음을 확인하였다. 본 연구는 수자원 보호나 수자원 재활용면에서 크게 기여 되리라 믿는다. A simplifid and economic process for recycling the used water discharged from a large scale residence(e. g. hotel and apartment etc.) was developed. The used water was purified through adsorption and flocculation of contaminants by chitosan at the first stage where the average removal rates of COD and BOD of the used water were found more than 60%. The previously treated water through flocculation by chitosan was subjected to filtration systems of a sand filter and an activated carbon column, and the average removal rates of COD and BOD were found more than 80%. The experimental results suggest that the biological process which is very popular in the treatment of the used water for the removal of COD and BOD can be omitted and expected to reduce a spacial and running expenditure. On the other hand, testing the used water discharged from hot springs with chitosan proves a possibility of development of a simple and economical process for the treatment of the used water to the criteria of recycled water quality without any addition of more complicated equipments and facilities.