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Computer Sciences

2002

Predictable assembly

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Full-Text Articles in Physical Sciences and Mathematics

Predictable Assembly Of Substation Automation Systems: An Experiment Report, Scott A. Hissam, John Hudak, James Ivers, Mark H. Klein, Magnus Larsson, Gabriel A. Moreno, Linda M. Northrop, Daniel Plakosh, Judith Stafford, Kurt C. Wallnau, William G. Wood Aug 2002

Predictable Assembly Of Substation Automation Systems: An Experiment Report, Scott A. Hissam, John Hudak, James Ivers, Mark H. Klein, Magnus Larsson, Gabriel A. Moreno, Linda M. Northrop, Daniel Plakosh, Judith Stafford, Kurt C. Wallnau, William G. Wood

Gabriel A. Moreno

The Predictable Assembly from Certifiable Components (PACC) Initiative at the Software Engineering Institute (SEI) is developing methods and technologies for predictable assembly. A software development activity that builds systems from components is predictable if the runtime behavior of an assembly of components can be predicted from known properties of components and their patterns of interactions (connections), and if these predictions can be objectively validated. A component is certifiable if these known properties can be obtained or validated by independent third parties. The SEI's technical approach to PACC rests on prediction-enabled component technology (PECT). At the highest level, PECT is a …

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Packaging And Deploying Predictable Assembly, Scott A. Hissam, Gabriel A. Moreno, Judith Stafford, Kurt C. Wallnau May 2002

Packaging And Deploying Predictable Assembly, Scott A. Hissam, Gabriel A. Moreno, Judith Stafford, Kurt C. Wallnau

Gabriel A. Moreno

Significant economic and technical benefits accrue from the use of pre-existing and commercially available software components to develop new systems. However, challenges remain that, if not adequately addressed, will slow the adoption of software component technology. Chief among these are a lack of consumer trust in the quality of components, and a lack of trust in the quality of assemblies of components without extensive and expensive testing. This paper describes predictionenabled component technology (PECT). A PECT results from integrating component technology with analysis models. An analysis model permits analysis and prediction of assembly-level properties prior to component composition, and, perhaps, …

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Statistical Models For Empirical Component Properties And Assembly-Level Property Predictions: Toward Standard Labeling, Gabriel A. Moreno, Scott A. Hissam, Kurt C. Wallnau Apr 2002

Statistical Models For Empirical Component Properties And Assembly-Level Property Predictions: Toward Standard Labeling, Gabriel A. Moreno, Scott A. Hissam, Kurt C. Wallnau

Gabriel A. Moreno

One risk inherent in the use of software components has been that the behavior of assemblies of components is discovered only after their integration. The objective of our work is to enable designers to use known (and certified) component properties as parameters to models that can be used to predict assembly-level properties. Our concern in this paper is with empirical component properties and compositional reasoning, rather than formal properties and reasoning. Empirical component properties must be measured; assessing the effectiveness of predictions based on these properties also involves measurement. This, in turn, introduces systematic and random measurement error. As a …

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