On June 2013 a workshop at the University of Siena (Italy) was organized to review current knowledge and to clarify what is known, and what remains to be investigated, concerning plastic litter in the sea. The content of the workshop was designed to contribute further to the European Marine Strategy Framework Directive (MSFD) following an inaugural workshop in 2012. Here we report a number of s...

unsustainability and precarious conditions of agricultural production have caused this sector be associated with risk . crops insurance is efficient tool for controlling and reducing production and market risk and stabilizing farmers' income. in this study, the thinking system approach by using of i think software is used for analyzing and modeling of the effects of different alternatives of po...

There are fragmentations in Iran’s health insurance system. Multiple health insurance funds exist, without adequate provisions for transfer or redistribution of cross subsidy among them. Multiple risk pools, including several private secondary insurance schemes, have resulted in a tiered health insurance system with inequitable benefit packages for different segments of the population. Also fra...

The ecological insurance hypothesis predicts a positive effect of species richness on ecosystem functioning in a variable environment. This effect stems from temporal and spatial complementarity among species within metacommunities coupled with optimal levels of dispersal. Despite its importance in the context of global change by human activities, empirical evidence for ecological insurance rem...

feeding habits of caspian marine shad alosa braschnikowii (borodin, 1904), inhabiting in the western part of caspian sea such as prey spectrum and seasonal dynamics have been studied. as in other parts of caspian sea, throughout the year, the main hunt of caspian marine shad constituted kilkas, gobies and shrimps while other groups of zoobenthos were represented in a lesser extent. importance o...

Crop insurance is a risk management tool with the potential of dealing with risk more efficiently, the study uses a dichotomous contingent valuation method to elicit the willingness to pay for crop insurance among cereal farmers in the Eastern region of Ghana. The study employed descriptive statistical techniques to analyse primary data obtained from 208 sampled farmers in the region. Approxima...