abstract water pricing is a policy instrument for improving water efficiency, reducing water demand, management of the irrigation systems and recovering costs. the underlying principle of water pricing is that it should reflect the opportunity cost of water. in this study, parametric mathematical programming approache were used to estimate the willingness of farmers to pay for groundwater under...

economic valuation of water is useful in the administration and management of water. population growth and urbanization caused municipal water demand increase in iran. limited water resource supply and urban water network capacity raised complexity in water resources management. present condition suggests using economic value of water as a criterion for allocating policies and feasibility study...

forests and rangelands are the most important natural ecosystems which provide many economic benefits to the society due to their biodiversity and ecological functionalities. dashtenaz wildlife refuge, sari, is a sylvan region, covering 55 ha of rangeland with abundant diversity, is refuge of an endangered species of deer called dama mesopotamica. in this study, contingent valuation method (cvm...

Given the significance of teacher care and its impact on student motivation, stroke as a unit of recognition seems to be related to motivation for class attendance and language learning. In this regard, this paper aimed to investigate the role of stroke in students’ willingness to attend classes (WTAC) and their foreign language achievement (FLA) in the foreign language context. To this end, a ...

This study was an attempt to investigate the relationship among EFL learners’ language aptitude, anxiety, and willingness to communicate (WTC). Accordingly, two questionnaires and a battery were used: Language Aptitude Battery for Iranian Learners (LABI), Foreign Language Classroom Anxiety Scale (FLCAS), and WTC Scale. A total of 164 undergraduate students majoring in English literature and Eng...