Distributed Situation Awareness by Paul M. Salmon & Neville A. Stanton & Guy H. Walker & Daniel P. Jenkins

Author:Paul M. Salmon & Neville A. Stanton & Guy H. Walker & Daniel P. Jenkins
Language: eng
Format: epub
Tags: Theory, Measurement and Application to Teamwork
Publisher: Ashgate Publishing Limited
Published: 2009-07-18T16:00:00+00:00

Propositional Networks

Further validation for the propositional network methodology as a means for describing and evaluating DSA during complex collaborative activity was offered by this study. In this case, the propositional networks permitted the description of DSA from the point of view of multiple agents within the system, which in turn allowed the definition of the information used by different agents at different times throughout the scenario. The propositional networks developed in this case were also useful in that they depicted how the information related to DSA expanded and how DSA became richer during the experiment. The water example presented in Figure 6.10 demonstrated how an analysis of the different information elements within the propositional networks allows one to evaluate how rich a system’s DSA is at a particular time. This is particularly useful for assessing the quality of the information that is passed around a network and can also be used to identify instances where the key information required for DSA is either not available (i.e. not presented by interfaces) or its dissemination is not supported (i.e. the information cannot be communicated to the people who require it). The usefulness of vignettes, as opposed to whole scenarios, to describe and analyse DSA was also demonstrated by this analysis, which suggests that, in complex, large-scale scenarios it is acceptable to use vignettes rather than the whole scenario (which leads to large and unwieldy outputs).

In closing, it is concluded from the analysis that DSA was affected by both the new process adopted (effects based operations) and the new technology used (e.g. IWS). The new EBO process led to some confusion over the roles of different participants in disseminating information whilst problems with the IWS meant that participants found it difficult to locate and assimilate DSA-related information. It is recommended, therefore, that further study into the effects of new coalition processes and technologies on collaborative SA is undertaken and that measures are taken to design such processes and systems to support, rather than inhibit, SA during multinational operations.

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