Nonfatal Heroin Overdoses in Queensland, Australia: an Analysis of Ambulance Data
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چکیده
منابع مشابه
THE UNIVERSITY OF QUEENSLAND Queensland 4072 Australia
This document presents a formal abstract syntax in Z for fragments in the CARE language. Constraints are included which deene the \semantic checks" which deene well-formedness of fragments.
متن کاملTHE UNIVERSITY OF QUEENSLAND Queensland 4072 Australia
We have recently extended the sequential refinement calculus to handle real-time programs. A novel deadline command allows execution time limits to be expressed in a high-level language. The calculus allows refinement steps that separate timing constraints from non-timing requirements. Rules are provided for handling timing constraints, but the refinement of components implementing non-timing r...
متن کاملTHE UNIVERSITY OF QUEENSLAND Queensland 4072 Australia
This paper presents a framework for compositional verification of Object-Z specifications. Its key feature is a proof rule based on decomposition of hierarchical Object-Z models. For each component in the hierarchy local properties are proven in a single proof step. However, we do not consider components in isolation. Instead, components are envisaged in the context of the referencing super-com...
متن کاملTHE UNIVERSITY OF QUEENSLAND Queensland 4072 Australia
The demands placed on programmers by the needs of safety-critical systems mandate the use of formal methods, supported by an integrated toolkit, throughout software development. Many formal speciication, design and veriication techniques have been proposed in the past. As the next step in the maturation of these techniques we are aiming to integrate previously disparate methods. Our overall met...
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Opportunity for Change? M than 90% of patients who survive a prescription opioid overdose continue to be prescribed opioids after the event, usually by the same prescriber. This is the astonishing finding of the study by Larochelle and colleagues (1) published in this issue. Using the Optum database of claims for a large national insurer, the authors found that among 2848 patients who survived ...
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ژورنال
عنوان ژورنال: Journal of Urban Health: Bulletin of the New York Academy of Medicine
سال: 2003
ISSN: 1099-3460,1471-8505
DOI: 10.1093/jurban/jtg027