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불확실성이 지불용의금액 및 수령의사금액과 그 차이에 미치는 효과
김종철 ( Jong Churl Kim ),장경호 ( Kyung Ho Jang ) 한국경제교육학회 2015 경제교육연구 Vol.22 No.1
This study investigates the effects of ambiguity on the willingness-to-pay (WTP), the willingness-to-accept (WTA), and their gaps. It also analyzes how preference reversals depend on the degree of ambiguity in winning the lottery. First, we found that both buyers and sellers prefer clear lotteries rather than ambiguous lotteries under uncertainty. However, this preference is more frequent for the buyers of lotteries. Gaps between WTPs and WTAs tend to be larger for those who select clear lotteries. Second, buyers`` WTPs are higher for the selected lotteries irrespective of the degree of uncertainty. Buyers`` WTPs are higher for the purchased lotteries, while sellers`` WTAs for ambiguous lotteries are higher for the unselected clear lotteries. These results reflect the fact that sellers hope to receive more amount of money from buyers as long as clear lotteries are more advantageous to buyers even in the zero-sum game with uncertainty. Third, buyers`` WTPs are higher than sellers`` WTAs due to endowment effects. Lastly, preference reversals are more frequent for the sellers than the buyers of lotteries.
실험계획법에 의한 GMP용 비구면 광학유리의 성질에 미치는 조성의 효과 연구
맹지헌,김형준,정아름,김종철,최성철,Maeng, Jee-Hun,Kim, Hyeong-Jun,Jung, Ah-Reum,Kim, Jong-Cheol,Choi, Sung-Churl 한국세라믹학회 2011 한국세라믹학회지 Vol.48 No.1
In this study, the composition of optical glass for GMP(glass molding process) was designed with 'Design of Experiments' method. All the composition batch was performed by 'Create Factorial Design' method. Particularly, $SiO_2$, BaO and $Al_2O_3$ were chosen major parameters for investigating the effects of components on optical and thermal properties. BaO and $Al_2O_3$ strongly influenced on optical and thermal properties, respectively. Finally, the approximate values of desired optical and thermal values were obtained by microtuning of compositions. At the composition of $BaO:Al_2O_3:SiO_2$=10:4:48 (molar ratio), refractive index($n_d$) was 1.5833, coefficient of thermal expansion(CTE) was $104{\times}10^{-7}/^{\circ}C$.