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Korea-India Software Industry Technological Cooperation: Projects and Strategies for Cooperation
서상혁 한국기술혁신학회 2014 기술혁신학회지 Vol.17 No.4
The purpose of this paper is to examine the current status of the SW industry and technology in Korea and India, and to suggest future strategies for cooperation. To accomplish the goal, this study outlines the characteristics of the SW industry, its market size, and the current statuses of SW technologies in the two countries; and presents strategies for future cooperation by comparing the level of technology in the two countries while considering the need for vitalizing their cooperation. For comparing level of the SW industry’s technology, so-called 4P evaluation (professionals, patents, papers, and products) was used, and a total of 21 projects were selected as future projects for cooperation through the analysis. In addition, the new approaches for future cooperation were presented; the exchange of manpower as a form of priority cooperation, more effort to develop and accumulate intellectual property rights to build conditions suitable for cooperation from India as well as a cooperation fund to bring continuous cooperation between the two countries.
전하량적정법에 의한 Ni<sub>1-X</sub>O의 Nonstoichiometry 측정
서상혁,오승모,Suh, Sang-hyuk,Oh, Seung-Mo 한국공업화학회 1991 공업화학 Vol.2 No.4
전하량적정법에 의해 $Ni_{1-x}O$의 비화학양(nonstoichiometry)를 측정하였고 결함모델을 확인하였다. 0.1-0.21atm의 산소분압과 1123-1198K의 온도범위에서 $Ni_{1-x}O$의 비화학양은 $Po_2{^{1/4}}$에 비례하였다. 이러한 산소분압의 의존성으로부터 $Ni_{1-x}O$의 주 결함은 singly 이온화한 Ni 빈자리임을 확인할 수 있었다. T=1173K와 $Po_2=0.21atm$인 조건에서 $x=1.21{\times}10^{-4}$의 값을 가졌다. 제안된 결함모델로 부터 결함의 표준생성엔탈피를 계산하였는데 0.95 eV의 값을 가졌다. 1248K 이상의 온도에서는 doubly 이온화된 빈자리로의 전이가 나타나기 시작하였다. Nonstoichiometry and defect model for $Ni_{1-x}O$ were determined by coulometric titration method. In the temperature range of 1123-1198K and oxygen partial pressure of 0.21-0.1 atm, the nonstoichiometry was found to be proportional to the fourth root of the oxygen partial pressure. This pressure dependence can be explained by the fact that nonstoichiometric $Ni_{1-x}O$ contains singly ionized metal vacancies as the predominant point defects. At T=1173K and $Po_2=0.21atm$, the nonstoichiometry, x was $1.21{\times}10^{-4}$. The standard formation enthalpy of defects in $Ni_{1-x}O$ was found, on the basis of this defect model, to be 0.95 eV. Also the result indicates that both of singly and doubly ionized metal vacancies are simultaneously present at above 1248K.
Inventory Policies and Contracts in a Two-Stage Serial Supply Chain with Asymmetric Cost Information
서상혁,김성식 한국SCM학회 2005 한국SCM학회지 Vol.5 No.2
Inventory policies of two-stage serial supply chain under asymmetric cost information and contracts to reveal the private information are investigated. Inventory holding costs are charged at each stage, but are unknown to each other. A consumer backorder generates cost. The backorder cost is split between the retailer and the supplier. Therefore, the supplier’s backorder cost is increased while his holding cost is lowered. The supplier and the retailer choose their base stock policies independently to minimize their own costs. The utility under asymmetric information environment is inefficient compared to that under complete information environment. Firms are keen on procuring the inside information of their counter parts, but are reluctant to reveal their own. Therefore the contract is developed under which each stage improve their utility as if in the complete cost information environment. Each firm pays information purchasing fee to buy the other’s private information. Activities such as accepting or rejecting of a contract could make your private information more public. The developed contract considers these activities as well. The entire supply chain’s utility is also improved with the contract. The contract satisfies individual-rationality conditions of both information seller and information buyer.