the economic burden of human immunodeficiency virus/acquired immunodeficiency syndrome (hiv/aids) is far greater than its direct medical costs. this study estimated annual indirect costs of the hiv/aids epidemic in islamic republic of iran in 2006-2007 from societal perspective. a patient cost diary in sets of six booklets covering a total of 6 months (from october 2006 and fallowed until march...

cost of quality analysis is emerged as an effective tool for the industrial managers for pinpointing the deficiencies in the system as well as for identifying the improvement areas by highlighting the cost reduction opportunities. however , this analysis will be fully effective only if it is further extended to identify the cost incurred in ensuring quality in all areas of the supply chain incl...

this paper explores the leverage determinants across firms’ sizesbased on the two main theories behind the capital structure, the trade-offand the pecking order theories. a panel data is sued to find therelationship between capital structure and the variables that proxy forbenefits and costs of debt during 1990 to 2006. our findings show thatboth principles help to explain the capital structure...

In real-world applications, costs for products are not deterministic: neither static nor dynamic. They actually tend to be non-stationary and cross-correlated. To overcome this drawback, there have been some efforts by researchers to extend the Wagner–Whitin algorithm to consider stochastic costs. However, they assume that the information of probability density function of random costs exists. ...

in future, soil erosion will be a great challenge for biosphere. if the soils today are notprotected carefully hunger crises all over the world will be widespread. the present article endeavorsto survey soil erosion process and approaches to prevent it. furthermore the article tries to review therelation between soil character and soil production capability shedding light on the effect of erosi...