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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. …
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All economic action is embedded in social contexts (Granovetter 1985). However, contingent work practices make work relations more episodic, transient and marketlike. They produce dislocated and time-space spanning social contexts and, therefore, contribute to what Giddens (1990) has called the...
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leader's decision of how much risk to take, we study the effects of two treatment variables: (1) whether group members can …
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