The purpose of this study is to segment foreign tourists who are visiting rural tourism village based on importance attributes of rural experiences tourism. From the literature review, rural experience tourism and its' importance attributes were discussed and these are, peculiar cultural experience, rural experience tourism price, food, natural scenery, accessibility, accommodation and convenient facility. On-site survey was conducted to collect the data from 8 rural tourism villages and a total of 258 useful samples were collected and analyzed. Frequent, cluster analysis, MDA, and MANOVA were performed to produce the results. The cluster analysis showed that three clusters solution was appropriate and named as moderated satisfaction group, high satisfaction group, and highly satisfaction group. The results of MANOVA showed that there were differences among the groups in terms of satisfaction and loyalty of rural experiences tourism. Theoretical and practical implications were discussed in the conclusion section.

Sludge minimization from wastewater treatment plant is becoming more important to save disposal costs and to contribute to sustainable development. For the reduction of sludge production, solubilization and dewaterability of sludge are important factors in sludge processing. Ultrasonic treatment has been used to enhance sludge solubility and dewaterability with anaerobic digestion sludge, primary sludge, and activated sludge. At the ultrasonic power of 0.2 kW/L for 1 hour, anaerobic sludge and activated sludge showed higher solubilization efficiency than the primary sludge in terms of COD, proteins, and suspended solids. Ultrasonic treatment decreased sludge dewaterability and sludge settling characteristics up to 720 kJ/L of ultrasonic energy. In conclusion, ultrasonic treatment was effective for sludge solubilization but it deteriorate dewaterability (specific resistance) and settling characteristics (SVI) of sludge at the experimental conditions.