PURPOSES : This study analyzed the amount of fuel consumption and atmospheric emissions by type of asphalt concrete mixtures. METHODS : Asphalt concrete mixture was produced directly at the plant, fuel consumption was measured compared to daily production, and atmospheric emissions emitted during the production process were measured. Hot and warm asphalt mixtures were produced, and analyses were conducted according to weather conditions and production volume. RESULTS : The fuel use per ton was confirmed to reduce energy by approximately 23.5% in WMA compared to HMA due to differences in the production temperature during the production of asphalt mixtures. Additionally, HMA production yielded 1.6 times higher atmospheric emissions for CO2 and 3.8 times higher for NOx than that for WMA, indicating that CO2 and NOx emissions tended to increase as fuel consumption increased. CONCLUSIONS : When producing asphalt mixtures, the production temperature, production volume, atmospheric conditions, and site conditions have a significant impact on fuel usage and atmospheric emissions.

The purpose of this study is to analyze the amount of willingness to pay for environment-friendly agricultural processed foods by the level of consumption intention. To accomplish the objective of the study a consumer survey was conducted for quantitative analysis regarding consumption pattern. The ordered-probit selection model, Heckman-type two-stage method was employed for an empirical analysis on determining the amount of willingness to pay. The estimation results showed that in the case of consumers who are to keep their consumption at the present level, those with high quality contentment compared to price, brand contentment, and purchasing chiefly in the special store, have the higher amount of willingness. The estimation results also showed that in the case of consumers who are to increase their consumption, those with high quality contentment compared to price, brand contentment, certificate contentment, and having family members who suffer from diseases such as atopy, cancer, diabetes, high blood pressure, have the higher amount of willingness. Therefore For those who are to increase their consumption, enhancement of quality, enhancement of contentment with certificate, promotion are useful to increase the amount of willingness to pay.