Safety-critical medical device development using the UPP2SF model translation tool

Software-based control of life-critical embedded systems has become increasingly complex, and to a large extent has come to determine the safety of the human being. For example, implantable cardiac pacemakers have over 80,000 lines of code which are responsible for maintaining the heart within safe operating limits. As firmware-related recalls accounted for over 41% of the 600,000 devices recalled in the last decade, there is a need for rigorous model-driven design tools to generate verified code from verified software models. To this effect, we have developed the UPP2SF model-translation tool, which facilitates automatic conversion of verified models (in UPPAAL) to models that may be simulated and tested (in Simulink/Stateflow). We describe the translation rules that ensure correct model conversion, applicable to a large class of models. We demonstrate how UPP2SF is used in themodel-driven design of a pacemaker whosemodel is (a) designed and verified in UPPAAL (using timed automata), (b) automatically translated to Stateflow for simulation-based testing, and then (c) automatically generated into modular code for hardware-level integration testing of timing-related errors. In addition, we show how UPP2SF may be used for worst-case execution time estimation early in the design stage. Using UPP2SF, we demonstrate the value of integrated end-to-end modeling, verification, code-generation and testing process for complex software-controlled embedded systems. © 2014 ACM.

A politics of what: the enactment of peritoneal dialysis in indigenous Australians

This paper explores, on the one hand, the requirements of the technologies and practices that have been developed for a particular type of renal patient and health network in Australia. On the other, we examine the cultural and practical specificities entailed in the performance of these technologies and practices in the Indigenous Australian context. The praxiographic orientation of the actor-network approach – which has been called 'the politics of what' (Mol 2002) – enabled us to understand the difficulties involved in translating renal healthcare networks across cultural contexts in Australia; to understand the dynamic and contested nature of these networks; and to suggest possible strategies that make use of the tensions between these two disparate networks in ways that might ensure better healthcare for Indigenous renal patients.

Succession and Indigenous Australians : addressing Indigenous customary law notions of 'property' and 'kinship' in a succession law context

The purpose of this article is to critically evaluate the existing capacity of Indigenous people to exercise succession rights against their estate. This article begins with a discussion of the sources of the general succession laws in Australia, noting that they have derived from UK law, where the common law notions of property, property rights and family, including the expectational right to succeed to property, are all important factors. These common law notions do not easily fit within the spectrum of Indigenous customary law. Generally, many Indigenous Australians will die without executing a valid will (ie, they die intestate) and it is here that this article undertakes an examination of the general intestacy laws in all Australian jurisdictions noting the inadequacy of the provisions to recognise Indigenous persons’ spiritual and cultural obligations to property, land or otherwise, together with a failure to distinguish extended Indigenous kinship relationships under Indigenous customary law. It is argued that Indigenous people who die intestate should be supported by a flexible and adaptive intestacy framework, responsive to the full customary and cultural responsibilities of the deceased, thus promoting an organic and developmental approach to succession entitlements.

Social and emotional wellbeing in Indigenous Australians: identifying promising interventions

Objective: