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【正文】 uction by estimating tradeoffs between price and the other environmental attributes. ? The final part of the questionnaire dealt with the socioeconomic characteristics of the espondent ? . Sample selection and survey method ? The study area of this research covers 7 nationwide metropolitan areas. In proportion to populations in 7 metropolitan areas, a random sampling to draw a representative sample of each population was conducted by a professional polling firmlocated in Seoul. 3. Econometric models ? . Random utility model ? where Vij is the observable deterministic ponent and eij is the unobserved stochastic ponent. Vij is a function of both the attributes of the alternative options and the status quo in choice set (Zij) and the characteristics of the respondent (Si). ? . Model specifications ? Two models were constructed to elicit monthly WTP per household for mitigating environmental impacts caused by the Tong River dam construction. 4. The results ? . Survey results ? . Estimation results ? . MWTP estimates of each attribute ? . Aggregation from the household to the population level . Aggregation from the household to the population level 謝謝！
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