ABSTRACT AUTOMATED PRODUCTION OF INFORMATION MODELS FOR USE IN MODELBASED DIAGNOSIS (2009)
The most difficult part of system maintenance is diagnosing failures. System expertise is needed, but manuals cannot cover all the unique situations and in-house experts are difficult to retain...
Fault Isohion in an Integrated Diagnostic Environment (2008)
William R. Simpson, John W. Sheppard
integrated diagnostics permits engi-neers to design complex systems that make effective use of test re-sources. The information flow mod-el, which we detailed in part 2 of this series, consists of...
budgets, the number of new systems being developed is decreasing, and the lives of existing systems are being extended. Consequently, aging systems are experiencing failures more frequently than...
Applying Testability AnaIysis br Integrated Diagnostics AN IMPORTANT STEP in the integrated (2008)
John W. Sheppard, William R. Simpson
diagnostic process is developing requirements and gathering resources to test a system. In the third article in this series, ’ we described a number of measures that evaluate system testability at...
Chapter 6 Managing Conflict in System Diagnosis (2008)
Abstract: Advanced diagnostic techniques have become essential for supporting reliable testing of modern systems due to the rapid growth in complexity of these systems. Errors in the test process...
Douglas, Thomas A, Sturm, Matthew, Simpson, William R, Blum, Joel D, Alvarez-Aviles, Laura, Keeler, Gerald J, ...
Mercury is deposited to the Polar Regions during springtime atmospheric mercury depletion events (AMDEs) but the relationship between snow and ice crystal formation and mercury deposition is not well...
PRIMARY QUANTUM YIELDS FROM PEROXYACETYL NITRATE PHOTOLYSIS (2004)
Flowers, Bradley A., Stanton, John F., Simpson, William R.
Author Institution: Department of Chemistry and Biochemistry, The University of Texas at Austin; Department of Chemistry and Geophysical Institute, University of Alaska Fairbanks
Author Institution: Department of Chemistry and Geophysical Institute, University of Alaska Fairbanks
PHOTOLYSIS OF PEROXYACETYL NITRATE (PAN) STUDIED BY CAVITY RING-DOWN SPECTROSCOPY (2003)
Simpson, William R., Angerhofer, Mark, Phillips, Gavin, Nakayama, T., Matsumi, Yutaka, Flowers, Bradley A., ...
Author Institution: Department of Chemistry and Geophysical Institute, University of Alaska Fairbanks; Solar and Terrestrial Physics Laboratory, Nagoya University; Department of Chemistry, University...
Simpson,William R., Bailey,John H., Barto,Katherine B., Esker,Eugene
A program was undertaken to develop prediction procedures for organizational-level testability attributes. This report describes the first phase of that effort: the establishment of definitions and...
Predictors of Organizational-Level Testability Attributes (2000)
Simpson, William R., Gilreath, A. Elizabeth, Kelley, Brian A.
A program was undertaken to develop analysis and prediction procedures for evaluation testability attributes of complex electronic equipment at the organizational level of maintenance. The...
Brown, Herbert R., Morton, Richard P., Simpson, William R., Rolfe, Robert M.
This paper reports on analysis of opportunities for applying defense product definition models and simulations (M&S) that are based on computer-aided design, manufacturing, engineering, and test...
Managing Conflict in System Diagnosis (1998)
John W. Sheppard, William R. Simpson
: Advanced diagnostic techniques have become essential for supporting reliable testing of modern systems due to the rapid growth in complexity of these systems. Errors in the test process become more...
Activities and Results of the 1996 Joint Service Integrated Diagnostics Workshop. (1997)
Rolfe, Robert M., Brown, Herbert R., Savage, Howard S., Scalia, August, Simpson, William R.
This paper documents the activities and results of a Joint Service Integrated Diagnostics Workshop hosted by IDA on August 8, 1996, and provides an IDA study team's analyses of workshop results....
Levine, Daniel B., Retterer, Bernard L., Simpson, William R., Richardson, Scott C., Savage, Howard S.
This study is an extension of previous IDA work (Paper P-2848) on improvements to the Consolidated Automated Support System (CASS). Part 1 of the current study identifies improvements to increase the...
Improving the Accuracy of Diagnostics Provided by Fault Dictionaries (1996)
John W. Sheppard, William R. Simpson
Using nearest neighbor classification with fault dictionaries to resolve inexact signature matches in digital circuit diagnosis is inadequate. Nearest neighbor focuses on the possible diagnoses...
Multiple Failure Diagnosis (1994)
John W. Sheppard, William R. Simpson
: Model based diagnostic systems have generally avoided the issue of multiple failure diagnosis due to the computational complexity of covering all possible multiple faults and still providing an...
Fault Diagnosis Under Temporal Constraints,” IEEEAutotestcon Conf Record (1992)
Currently, intelligent diagnostic systems are applied to problems in which the state of the system is fmd. Unfortunately, with systems increasing in complexity at high rates coupled with...
Test Strategy Component of an Open Architecture for Electronics Design and Support Tools (1992)
Leonard Haynes, Sharon Goodall, Floyd Phillips, William R. Simpson, John Sheppard
Functional Path Analysis: An Approach to Software Verification (1988)
A widely accepted approach to software development involves successive refinement of design and requirements specifications from a top-level description of the system down to the code level. As the...