Upgrading anaesthetic machines

Development of anaesthetic machines.

It is abundantly clear that, during the past few years, there has been a remarkable resurgence of interest in all aspects of the history of anaesthesia, and not least in that of anaesthetic apparatus. Not only academic departments of anaesthesia, but also smaller general hospitals are now admitting to some form of collection of historical anaesthetic apparatus which has been garnered by devotee...

The hidden dangers of anaesthetic machines.

Upgrading Bottleneck Constrained Forests

We study bottleneck constrained network upgrading problems. We are given an edge weighted graph G = (V; E) where node v 2 V can be upgraded at a cost of c(v). This upgrade reduces the delay of each link emanating from v. The goal is to nd a minimum cost set of nodes to be upgraded so that the resulting network has a good performance. The performance is measured by the bottleneck weight of a con...

Learning for Upgrading

Upgrading Narrow Gauge Standards

When the railways were nationalized between 1906 and 1907, the skeleton of the nationwide trunk rail network was nearly completed, as mandated in the Railway Construction Act of 1892. At the end of 1907, nationalized railway lines in operation totalled 7,165 km. Construction continued and 2,677 km of line were added by the end of 1919. In addition to active line expansion, the first decade afte...