An Active Robust Optimisation Problem (AROP) aims at finding robust adaptable solutions, i.e. solutions that actively gain robustness to environmental changes through adaptation. Existing AROP studies have considered only a single performance objective. This study extends the Active Robust Optimisation methodology to deal with problems with more than one objective. Once multiple objectives are ...

We introduce the Stochastic multistage fixed charge transportation problem in which a producer has to ship an uncertain load to a customer within a deadline. At each time period, a fixed transportation price can be paid to buy a transportation capacity. If the transportation capacity is used, the supplier also pays an uncertain unit transportation price. A unit inventory cost is charged for the...

In the deregulated electricity market, demand side participation has become a very important solution to real-time energy balance. Demand response programs are offered by the utility companies to reduce the load on the customer side with monetary incentives when the power demand is high. It is a popular tool used by electricity utilities to manage the supply load and reduce the operating cost. ...

The optimal responses for many decisions faced by humans are ill defined, yet we are able to choose well by associating choices with outcomes, and employing this information in decision making. Previous studies suggest that the parietal cortex is involved in "uncertain" decision making, yet uncertainty is confounded with increased difficulty and attention. Here we aim to dissociate the role of ...

Abstract Friction force is a crucial factor causing power loss and fatigue spalling of rolling element bearings. A combined experimental analytical method proposed to quantitatively determine the elastohydrodynamic lubrication (EHL) friction distribution between rollers outer raceway in cylindrical roller bearing (CRB). An system with instrumented housing was developed for measuring radial load...

Recently, cluster computers become a viable and less expensive alternative to multiprocessor systems. However, a serious difficulty in concurrent programming of a cluster computer system is how to deal with scheduling and load balancing of such a system which may consist of heterogeneous computers. Based on the four-tuple DLBM (dynamic load balancing model) which is proposed by other scholars, ...

Load frequency control forms an essential component of Automatic Generation Control, which helps to maintain the power system frequency constant while maintaining the tie-line power flow with neighbouring áreas at scheduled values for an interconnected power system. With deregulation, the structure of electric power industry is changed thoroughly with multiple bilateral transactions taking plac...

This paper considers a class of networked Permanent Magnet Synchronous Motors PMSMs , whose feedback loops are closed over a shared data network. Although the installation and maintenance cost of the networked PMSM system can be lowered by replacing the conventional point-to-point feedback cables with a network, the network packet dropouts and transmission delay may degrade the system’s perform...