In distributed control system Ethernet is invading communication areas reserved so far to other specific and/or proprietary networks, due to its wide bandwidth, reliability and reduced cost. However this fact obliges to carefully evaluate the delay that messages undergo in order to fulfill with the application temporal requirements. In this paper the delay model is studied, its main components ...

Given a set of entities associated with points in Euclidean space, minimum sum-of-squares clustering (MSSC) consist in partitioning this set into clusters such that the sum of squared distances from each point to the centroid of its cluster is minimized. A column generation algorithm for MSSC was given in du Merle et al. [15]. The bottleneck of that algorithm is resolution of the auxiliary prob...

Synopsis: Some trucking companies have begun to look outside their operations for additional efficiencies by “cooperating with competitors,” i .e. with other carriers. This has been referred to as Collaborative Transportation Management. We present simple examples where a firm (i .e. a trucking company or an organization that has its own private fleet ) can enhance its transportation efficienci...

The simplest examples where the simplex method cycles and conditions where expand fails to prevent cycling 1 This paper introduces a class of linear programming examples which cause the simplex method to cycle indeenitely and which are the simplest possible examples which show this behaviour. The structure of examples from this class repeats after two iterations. Cycling is shown to occur for b...

Frith's original notion of 'weak central coherence' suggested that increased local processing in autism spectrum disorder (ASD) resulted from reduced global processing. More recent accounts have emphasised superior local perception and suggested intact global integration. However, tasks often place local and global processing in direct trade-off, making it difficult to determine whether group d...