background: health care workers are facing certain occupational hazards because of sharp injury and exposure to human blood and body fluids as a result of handling wastes. though much attention is paid for the protection of these workers, the number of exposures and injuries do not show a sign of decline from time to time. objective: to examine the occurrence of sharp injury and exposure to blo...

This paper uses newly available data from the IRS to assess the distributional consequences of U.S. federal income tax noncompliance for the tax year 2001. We fi nd that, when taxpayers are arrayed by their estimated “true” income, defi ned as reported income adjusted for underreporting, the ratio of aggregate misreported income to true income generally increases with income, although it peaks ...

Markowitz model is the first modern formulation of portfolio optimization problem. Relyingon historical return of stocks as basic information and using variance as a risk measure aretow drawbacks of this model. Since Markowitz model has been presented, many effortshave been done to remove theses drawbacks. On one hand several better risk measures havebeen introduced and proper models have been ...

The main criterion in investment decisions is to maximize the investors utility. Traditional capital asset pricing models cannot be used when asset returns do not follow a normal distribution. For this reason, we use capital asset pricing model with independent and identically asymmetric power distributed (CAPM-IIAPD) and capital asset pricing model with asymmetric independent and identically a...

Aluminum and magnesium alloys are of materials for decreasing vehicle weight and consequently reducing fuel consumption. However, forming limitations regarding their low formability at room temperature are found when being manufactured by conventional forming processes. For this reason, development of new forming techniques, such as warm tube hydroforming, is needed to overcome such limitations...