Software Upgrading in a CT Scanner

Upgrading software? Developing the RFP.

Toward a Flexible and Portable CT Scanner

The very hot and power-hungry x-ray filaments in today's computed tomography (CT) scanners constrain their design to be big and stationary. What if we built a CT scanner that could be deployed at the scene of a car accident to acquire tomographic images before moving the victim? Recent developments in nanotechnology have shown that carbon nanotubes can produce x-rays at room temperature, and wi...

Onboard Guarded Software Upgrading: Motivation and Framework

The goal of the guarded software upgrading (GSU) framework is to minimize mission performance loss due to onboard software upgrading activities and that due to system failure caused by residual faults in an upgraded version. We exploit inherent system resource redundancies as the means of fault tolerance to meet the development cost and onboard resource constraints. Furthermore, we devise a mes...

Software Reclamation : Upgrading Code for Reusability Acknowledgements

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Dynamic Upgrading of Network Management Software by Software Hot- Swapping

This paper provides a summary of the research performed by the Perpetuum Mobile Procura group into the problem of Software hot-swapping and its application to network management software. The motivation and the problem are first described, followed by an analysis of issues associated with software swappability. The SModule, the atomic unit of software swappability, is then introduced in the con...