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Safety analysis of clinical workflows: The case of the workflow within a radiology department (2014)
Conference Proceeding
Gordon, N., Sharvia, S., Walker, M., & Al-Qora'n, L. (2014). Safety analysis of clinical workflows: The case of the workflow within a radiology department. https://doi.org/10.1109/sai.2014.6918174

This paper was originally presented at the Science and Information Conference, 2014, 27-29 August, London. Abstract: Radiology Information Systems (RIS) and Picture Archiving and Communication systems (PACS) are used widely to help in the workflow ma... Read More about Safety analysis of clinical workflows: The case of the workflow within a radiology department.

A hierarchical method for the reduction of temporal expressions in Pandora (2010)
Conference Proceeding
Papadopoulos, Y., & Walker, M. (2010). A hierarchical method for the reduction of temporal expressions in Pandora. doi:10.1145/1772630.1772634

Fault Tree Analysis (FTA) is a popular safety analysis technique used to determine the logical combination of events needed to cause a particular system failure. However, FTA is purely combinatorial and cannot analyse the effects of sequences of even... Read More about A hierarchical method for the reduction of temporal expressions in Pandora.

Automatic allocation of safety integrity levels (2010)
Conference Proceeding
Papadopoulos, Y., Walker, M., Reiser, M., Weber, M., Chen, D., Törngren, M., …Sandberg, A. (2010). Automatic allocation of safety integrity levels. doi:10.1145/1772643.1772646

In this paper, we describe a concept for the automatic allocationof general Safety Integrity Levels (SILs) to subsystems andcomponents of complex hierarchical networked architectures thatdeliver sets of safety critical functions. The concept is gener... Read More about Automatic allocation of safety integrity levels.

A translation of state machines to temporal fault trees (2010)
Conference Proceeding
Papadopoulos, Y., Mahmud, N., & Walker, M. (2010). A translation of state machines to temporal fault trees. doi:10.1109/dsnw.2010.5542620

State Machines (SMs) are increasingly being used to gain a better understanding of the failure behaviour of safety-critical systems. In dependability analysis, SMs are translated to other models, such as Generalized Stochastic Petri Nets (GSPNs) or c... Read More about A translation of state machines to temporal fault trees.

A language for failure patterns and application in safety analysis (2008)
Conference Proceeding
Wolforth, I., Walker, M., & Papadopoulos, Y. (2008). A language for failure patterns and application in safety analysis. doi:10.1109/depcos-relcomex.2008.44

Components and families of components in mechatronic systems often exhibit failure characteristics that are independent of system context and repeatable across applications. In this paper, we show that it is possible to capture and reuse such pattern... Read More about A language for failure patterns and application in safety analysis.

Semi automatic failure analysis based on simulation models (2008)
Conference Proceeding
Hamann, R., Uhlig, A., Papadopoulos, Y., Rüde, E., Grätz, U., Walker, M., & Lien, R. (2008). Semi automatic failure analysis based on simulation models. doi:10.1115/omae2008-57256

Classical risk assessment and risk management which is gaining importance in many industries is usually based on well defined processes and uses techniques like FTA and FMEA. However, classical risk analysis techniques like FTA and FMEA should ideall... Read More about Semi automatic failure analysis based on simulation models.


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