of economic agents when these changes are made. The experiment results indicate that an important factor is the risk …Tax evasion is an illegal activity combated by the tax administration through different tools. Implicitly the risk is … present in this type of activity. Therefore, the risk assessment is an important component on the decision of evasive behavior …

Financial markets currently offer various investment alternatives, including a variety of assets, which are … risk. Given the above, this paper presents a model of efficient portfolio optimization based on Markowitz's theory, using … EWMA methodology for the calculation of portfolio risk. …

Financial markets currently offer various investment alternatives, including a variety of assets, which are … risk. Given the above, this paper presents a model of efficient portfolio optimization based on Markowitz´s theory, using … EWMA methodology for the calculation of portfolio risk. …