This study was to investigate the effect of the addition of red ginseng powder in Dasik. The addition of red ginseng powder in Dasik that we used with was in the ratio of 0%, 2%, 4%, 6% and 8% of red ginseng powder to Dasik in weight. Also, we used two different kinds of Dasik. One was made of starch and the other was made of flour. The physic-chemical analysis and sensory test were performed on the Dasik. The red ginseng powder added flour and starch Dasik showed lower moisture content and higher ash content compared with the non-added control group. In color analysis, whereas L value lowed at the addition of red ginseng powder, a and b value increased at the addition of red ginseng powder. In mechanical texture test, addition of red ginseng powder starch Dasik showed high hardness, cohesiveness and brittleness. Addition of red ginseng powder flour Dasik showed high springiness and gumminess. In the sensory test, the addition of the red ginseng powder reduced the sweetness and increased the surface color and the flavor. There was no difference in preference between the Dasik with up to 4% of red ginseng powder added and the control group, but the Dasik with 6% or more red ginseng was found undesirable (p<0.05). In conclusion, the Dasik with up to 4% addition of red ginseng powder would be the useful method to fulfill the traditional quality of Dasik. It was also found that the flour Dasik was to be more preferable than the starch Dasik.

Acrylic adhesives for automobiles protection were prepared by emulsion polymerization. Monomers used were n-butyl acrylate(BA), acrylonitrile (AN), butyl methacrylate(BMA), glycidyl methacrylate(GMA), and acrylic acid (AA). Emulsifiers used were sodium lauryl sulfate and polyoxyethylene lauryl ether, which are an anionic emulsifier and a nonionic emulsifier respectively. Potassium persulfate was used as an initiator and polyvinyl alcohol was used as a stabilizer. Emulsion polymerization was carried out in a semi-batch reactor at 70℃ and agitation speed was kept at 200 rpm. Water resistance, heat resistance, acid resistance, alkali resistance and smoke resistance were examined. As a result, when each 0.03 mole of GMA and AA was introduced, the adhesion properties and various above mentioned resistances of the prepared adhesives were satisfied the standard for automobiles.

본 연구에서는 두 나라에 걸쳐 경영활동이 전개되는 경우 기업에서의 다양한 문화적 배경이 동일한 조직성과에 대한 귀인양식(attribution pattern)에 어떤 체계적인 차이를 보이는지를 알아보고자 하였다. 이를 위해 한국의 반도체 제조 기업에 근무하는 미국인과 한국인 근로자를 대상으로 이들이 자기 회사의 성과를 어떻게 귀인 시키는지를 살펴보았다. 연구 결과, 미국인 근로자는 기업 실적의 책임에 있어서 시장 요인을 더 중요하게 인식한 반면, 한국인 근로자는 오히려 정부 요인을 기업 실적의 중요한 원인으로 인식하고 있었다. 그리고 한국인 근로자가 미국인 근로자보다 회사의 저조한 실적에 대해 더 많은 개인적 책임감을 인식하는 경향을 발견하였으나 연구방법론에 따라 통계적 유의성에 대한 해석에 차이를 보였다. 또한 집단기여에 대한 추가 분석을 실시한 결과 한국인 근로자와 미국인 근로자가 회사의 저조한 실적을 회사 자체의 책임으로 보는 정도에는 차이가 나타나지 않았다. 마지막으로 본 연구 결과의 시사점과 한계, 후속 연구가 논의 되었다.

This paper was concerned about case study for preventing WMDSs(Work-related Musculoskeletal Disorders) by using Thinking Process of TOC(Theory Of Constraints), Unfortunately, the number of WMDSs are rising steadily in auto-part manufacturer. These WMDSs have on worse and worse influence not only on the competition of enterprise but on the life quality of a worker. The research results are helpful to establish the preventing WMDSs and improvement of workplace environments for small-medium sized auto-part company.

여름철 팽이버섯 병재배시 톱밥배지에서 발생하는 균사생장 억제증상의 원인을 구명하고 그 경감대책을 확립하기 위하 여 톱밥배지 배합시 물온도를 24℃(상온수)와 6℃(저온수)로 하고, 배지제조후 살균전 경과시간을 0, 3, 6, 9시간으로 달 리하여 팽이버섯의 재배시험을 수행하였다. 배지제조 후 살균전 시간이 경과함에 따라 배지온도가 24℃에서 31℃까지 상 승하고, pH는 6.5에서 5.2까지 낮아지는 경향이었다. 이때 톱밥배지 내에서 세균밀도가 증가하였으며, 물온도 24℃에서는 6℃보다 6시간 이후의 세균밀도가 1.9∼4.1배 높았다. 톱밥배지에서 분리한 세균과 대치배양시 팽이버섯균의 생장이 억 제되었다. 또한 배지제조후 살균전 시간이 경과함에 따라 배지내의 전질소 함량이 감소하였으며 유리당의 함량도 종류에 따라서 증가 또는 감소하였다. 배지배합 시 24℃ 물 처리구는 6℃ 물에 비하여 팽이버섯 병재배사에서 균배양기간 및 버섯 발생기간이 각각 1∼2일 지연되는 경향이었으며, 자실체 수량도 저온수 처리구에서 안정적이었다. 그리고 9시간 경과한 배지에서는 균사생장이 정지되었다. 배지제조 후 경과시간에 따라 팽이버섯 발생기간은 1∼3일이 지연이 되었으며, 자실 체수량은 6시간이 경과된 배지에서 7∼12% 감소하는 경향이었다. 이상의 결과를 통하여 여름철 고온기의 팽이버섯 병재 배시 배지제조에 6℃ 이하의 저온수를 사용하여 배지내 미생물의 증식을 억제시키고, 입병작업을 마치는 즉시 고압살균을 하여 배지 성분을 안정화시키는 것이 버섯의 안정생산에 도움이 될 것으로 생각한다.

  본 연구에서는 철강 제조 공정에서 발생하는 생산 계획 문제를 설명하고 해결 방법을 제시한다. 철강 제품 중에서도 판재류(냉연, 아연도, 석도, 칼라 제품)를 생산하는 공정으로 연구 범위를 제한하고 적용하는 부분은 철강 공정의 스케줄링 분야를 배제한 생산 계획 분야만을 대상으로 한다. 특히, 철강 제조 공정의 생산 계획 문제들 중에서 가장 중요하게 고려되는 원료 충당 문제, 용량 할당 문제, Batched Annealing Furnace(BAF) 설비

Al-Cu alloy nano powders were produced by the electrical explosion of Cu-plated Al wires. The composition and phase of the alloy could be controlled by varying the thickness of Cu deposit on Al wire. When the Cu layer was thin, Al solid solution and were the major phases. As the Cu layer becomes thicker, Al diminished while phase prevailed instead. The average particle size of Al-Cu nano powders became slightly smaller from 63 nm to 44 nm as Cu layer becomes thicker. The oxygen content of Al-Cu powder decreased linearly with Cu content. It is well demonstrated that the electrodeposition combined with wire explosion could be simple and economical means to prepare variety of alloy and intermetallic nano powders.

The effect of use of as PCA(process control agent) to prevent the carbon contamination during mechanical alloying process and the precipitation behavior in Ni-20Cr-20Fe-5Nb bulk alloy after aging were investigated. NbC and were formed during mechanical alloying and consolidation processes in the Ni-20Cr-20Fe-5Nb alloy in which methanol() was added as PCA. Formation of NbC in this alloy decreased the amount of Nb dissolved in the Ni matrix. The use of as PCA in Ni-20Cr-20Fe-5Nb alloy prevented the formation of NbC and increased the hardness. The increase of hardness in this alloy was attributed to the increased amount of Nb dissolved in the Ni matrix. After aging treatment for 20 hours at of Ni-20Cr-20Fe-5Nb bulk alloy in which added as PCA, precipitates were formed, respectively. The precipitation temperatures of and in this bulk alloy were lower than those in commercial IN 718 alloy. It seemed that the lower precipitation temperatures for and in this bulk alloy than in commercial IN 718 alloy were due to severe plastic deformation during mechanical alloying.

A manufacturing information system, which collects manufacturing information from the shop floors and supply them to higher level systems, should be maintained and upgraded according to the change of production environment such as new product introduction. This situation leads to the need of a cost-effective system development methodology. In this paper, a methodology based on the classification and the similarity comparison of manufacturing processes is proposed. In this, a new product is classified according to the similarity of its manufacturing processes, which enables recycling of existing system modules. The proposed methodology has been tested in the case of an electronics parts manufacturing company, where an information system is implemented. The result shows that the proposed methodology can save time and efforts for system implementation