the aim of this study is to find the optimal water pressure and percentage of supply vapour in the feed water heaters (fwhs) of steam power plants, such that they maximize the thermal efficiency of the rankine cycle within pre-specified values of minimum and maximum pressures of the thermodynamic cycle. thermal efficiency is defined as a function of unknown variables (fluid pressure and vapour ...

In the context of global concern for environment and considering observation that very few manufacturing companies have taken a more proactive position on sustainability, it has been suggested stakeholder approach can contribute to study sustainability management. Hence, this paper analyzes relationship between set individual stakeholders pressures (STP) from different groups adoption implement...

Some studies suggest that fishery yields can be higher with reserves than under conventional management. However, the economic performance of fisheries depends on economic profit, not fish yield. The predictions of higher yields with reserves rely on intensive fishing pressures between reserves; the exorbitant costs of harvesting low-density populations erode profits. We incorporated this effec...

Highly rated sovereigns have been hard hit by the ongoing international economic crisis. S&P expects economic activity to fall in each of these sovereigns in 2009. Many of sovereigns' fiscal profiles have deteriorated recently because of the global recession and the need to recapitalize parts of their financial systems. In line with the deteriorating economic environment and financial sector pr...

various human pressures are affecting the aquatic biocoenosis in running waters of iran - similar to many other areas of the world. overall 190 sites, 88 at salmonid (44 reference/impacted respectively) and 102 at cyprinid (50 reference/52 impacted) streams of the southern caspian sea basin were investigated in terms of human pressures present and the related impact on fish assemblages. in tota...

BACKGROUND Pre-eclampsia is a major contributor to maternal and neonatal morbidity and mortality. Our objectives in this study are to economically assess, from the payer perspective, routine screening for pre-eclampsia using placental markers -placental protein 13 and placental growth factor - and uterine artery Doppler compared with standard care. METHODS A decision model was developed, whic...

          The aim of this paper is to simulate the effects of some macroeconomic policy tools on production and inflation of Iran by the current worldwide financial and real crisis. The theoretical framework of the analysis is based on the so-called ‘IMF/World Bank Integrated Model’ which is the synthesis (a merger) of the basic monetary approach of the Balance of Payments used at t...