the aim of present article is determining economic value of air pollution and environmental effects of mashhad city air pollution. data of 286 households of mashhad was gathered through questionnaire in a survey reaserch using stratified random sampling method in year 2006. in order to detemine environmental effects of air pollution choice experiment approach - which gives the most perfect envi...

AIM Present study calculates and analyzes Cost of illness of tuberculosis in Tehran. PATIENTS AND METHODS This study was a descriptive analytical study conducted among 121 patients in two stages in 2011. In the first stage, questionnaires were collected by reviewing patient records and phone interviews with patients. The second stage deals with the calculation of costs. For cost calculation, ...

abstract by using cross-section data which gathered through a survey research in mashhad ,contingent valuation approach and tobit model this study tries to determine economical value of air pollution and effective factors on wtp. based on contingent valuation approach, air pollution total value of airpollution in high-polluted region equals 7134146560 rials per month and in middle-polluted regi...

eremurus and forage are main by-products in the khazangah rangelands of makoo region. eremurus is harvested and used by local people in a period of 30 days during the spring in this region. at this study, eremurus and forage have been evaluated financially and the data were obtained through field work using unstructured interviews as well as direct observation. the harvested eremurus value was ...

objective: the main objective of this research was the economic valuation of public library services using the contingent valuation. although, estimating the average willingness to pay for public library service, demographics on the willingness to pay, and economic valuation and pricing public library services were other objectives that investigated in this study. methodology: explanatory varia...