OBJECTIVES To estimate the health and economic benefits that would result from two scenarios of improved air quality in 57 municipalities of the metropolitan area of Barcelona. METHODS We used attributable fractions and life tables to quantify the benefits for selected health outcomes, based on published concentration-response functions and economic unit values. The mean weighted concentratio...

Pricing policies play an important role in water demand management and its optimal allocation. Determining proper water price leads to optimal allocation of water especially in agricultural consumptions. Applying new subsidy targeting law in Iran which insists on pricing water based on its supply cost, will effects considerably on water resource management in agriculture sector. So, in this stu...

value of tourism and recreation are direct values of the forest ecosystem and parks, which include the use of parks and forest for recreation, leisure, hiking, and aesthetic. in this study, hasht behesht park recreational value and willingness to pay (wtp) is defined and measured by using contingent valuation method (cv) and double-bounded dichotomous choice (ddc). for measuring the willingness...

Elderly suicide rates have been shown to be low in countries with low socioeconomic status, including those with greater income inequality and those with reduced life expectancy (Shah et al., 2007). It is therefore possible in such countries that people at risk of suicide in old age do not reach the age of increased risk. Moreover, selective survival of those at reduced risk for suicide due to ...

introduction agricultural research is important and one of the determinant factors of development of technologies in agricultural sector. among agricultural research disciplines, breeding programs, especially, wheat breeding programs are one of the applied approaches in improving of production and food security. based on a study by byerlee & traxler (1995), economic benefits and internal rate o...