Conceptual, Semantic and Information Models for Medicine

. This paper presents the intensional requirements of the medical record. It suggests that at least four models are required in order to cover the complexity of the medical domain. It goes onto propose that description logics are more appropriate to the modelling of medicine information than conventional prescriptive semantic data models and propose a description logic capable of constrained generation of complex compositional concepts from elementary ones and their relationships. This formalism, named GRAIL, is described in detail as a representation for medical concepts, and is shown to be capable of integrating all the intensional and extensional requirements of a medical record. Experiences with GRAIL in use in a clinical workstation, PEN&PAD, and a large medical terminology server, part of the EU-funded project GALEN, are extensively described. The support requirements of distributed large-scale collaborative modelling for re-use, as required for GALEN, are discussed. Examples, bo..

GNU Radio

GNU Radio is a free & open-source software development toolkit that provides signal processing blocks to implement software radios. It can be used with readily-available, low-cost external RF hardware to create software-defined radios, or without hardware in a simulation-like environment. It is widely used in hobbyist, academic, and commercial environments to support both wireless communications research and real-world radio systems