Following the increasing awareness of the risk from volatility fluctuations, the market for hedging contracts written on realized volatility has surged. Companies looking for means to secure against unexpected accumulation of market activity can find over-the-counter products written on...

The rows and columns of an arbitrary coefficient matrix of large numerical problems can often be permuted so that substantial time can be saved in computations. For example, if a large linear programming problem has a suitable block-angular structure, one of the time-saving decomposition...

Purpose: We investigate causes for the cost overrun and delay of the railway project Stuttgart 21. Besides, we try to forecast the actual costs and completion date at an early stage. Design/methodology/approach: The results of exploratory research show the causes for the cost overrun and delay...