This paper tests the presence of multiple independent submarkets in the Italian motor insurance industry. Independence is motivated by administrative boundaries among provinces and by further locational reasons. We find that the independence effects are sufficient to induce a minimum degree of inequality in the size distribution of firms once submarkets are aggregated. These results are fully c...

Stress has deleterious effects on brain, body, and behavior in humans and animals alike. The present work investigated how 30-min acute photic stress exposure impacts on spatial information processing in the main sub-regions of the dorsal hippocampal formation [CA1, CA3, and dentate gyrus (DG)], a brain structure prominently implicated in memory and spatial representation. Recordings were perfo...

Many discrete optimization problems amount to selecting a feasible set of edges least weight. We consider in this paper the context spatial graphs where positions vertices are uncertain and belong known uncertainty sets. The objective is minimize sum distances chosen for worst their first prove that these [Formula: see text]-hard even when sets consist either all spanning trees or s – t paths. ...

Due to decarbonisation and decentralisation of energy sectors, the rise distributed generation (DG) will modify demand patterns at grid supply points (GSPs), where interface between distribution transmission systems takes place. With increasing penetration such devices, methodologies able evaluate its contribution both local network system become crucial. This paper proposes an analytical metho...

In this paper, we extend the concepts of demand data aggregation error to location problems involving coverage. These errors, which arise flora losses in locational information, may lead to suboptimal location patterns. They are potentially more significant in covering problems than in p-median problernsIbecause the distance metric is binary in covering problems. We examine the Hillsirtan and R...

This paper proposes a novel technique for representing system security in the operations of decentralized electricity markets, with special emphasis on voltage stability. An Interior Point Method is used to solve the Optimal Power Flow problem with a multi-objective function for maximizing both social benefit and the distance to maximum loading conditions. A 6-bus system with both supply and de...