2012

Burr, T., Hamada, M.S., Howell, J. , and Suzuki, M. (2012) Loss detection results on simulated tank data modified by realistic effects. Journal of Nuclear Science and Technology, 49 (2). pp. 209-221. ISSN 0022-3131 (doi:10.1080/00223131.2011.649076)

2011

Bevan, G., Howell, J. , and Burr, T.L. (2011) A tank monitoring evaluation system for a standard three-tank arrangement. In: 52nd Annual INMM Meeting, 17-21 July 2011, Palm Desert, CA, USA.

Bevan, G., Howell, J. , Burr, T.L., and Binner, R. (2011) Solution monitoring evaluation system reasoning processes. In: 52nd Annual INMM Meeting, 17-21 July 2011, Palm Desert, CA, USA.

Burr, T., Hamada, M.S., Cremers, T., Weaver, B.P., Howell, J. , Croft, S., and Vardeman, S.B. (2011) Measurement error models and variance estimation in the presence of rounding error effects. Accreditation and Quality Assurance, 16 (7). pp. 347-359. ISSN 0949-1775 (doi:10.1007/s00769-011-0791-0)

Burr, T., Suzuki, M., Howell, J. , Longo, C.E., and Hamada, M.S. (2011) Signal estimation and change detection in tank data for nuclear safeguards. Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 640 (1). pp. 200-212. ISSN 0168-9002 (doi:10.1016/j.nima.2011.02.078)

Frey, K. et al. (2011) A dissolver diversion scenario illustrating the value of process monitoring. In: 52nd Annual INMM Meeting, 17-21 July 2011, Palm Desert, CA, USA.

Krebs, J.F., Bakel, A., Howell, J. , Johnson, S., Ehinger, M., Orton, C.R., Longo, J.F., DeMuth, N.S., Garcia, H.E., and Burr, T.L. (2011) Roles for process monitoring in support of nuclear materials accounting. In: 52nd Annual INMM Meeting, 17-21 July 2011, Palm Desert, CA, USA.

2010

Boyer, B., Erpenbeck, H., Miller, K., Inankiev, K., Reimold, B., Ward, S., and Howell, J. (2010) Gas Centrifuge Enrichment Plants Inspection Frequency and Remote Monitoring Issues for Advanced Safeguards Implementation. In: IAEA Symposium on International Safeguards, Vienna.

Burr, T.L., Howell, J. , and Ehinger, M. (2010) Solution Monitoring Scoring Systems. In: 51st Annual INMM Meeting, 11-15 July 2010, Baltimore, Ma..

Burr, T.L., Howell, J. , Longo, C., and Suzuki, M. (2010) A Comparison Of Change Detection Options For Solution Monitoring. In: 51st Annual INMM Meeting, 11-15 July 2010, Baltimore, Ma..

Cowell, G.T., Howell, J. , and Burr, T.L. (2010) Some Implications Of Applying NRTA To A Mox Facility With Significant Temporary Stores. In: 51st Annual INMM Meeting, 11-15 July 2010, Baltimore, Ma..

DeMuth, S. et al. (2010) Proliferation Resistance and Safeguards. In: Cacuci, D.B. (ed.) Handbook of Nuclear Engineering. Springer. ISBN 978-0-387-98149-9

Whitaker, M., Laughter, M., and Howell, J. (2010) Using process load cell information for IAEA safeguards at enrichment plants. In: Symposium on International Safeguards: Preparing for Future Verification Challenges, 1-5 Nov 2010, Vienna, Austria.

2009

Howell, J. (2009) Towards the re-verification of process tank calibrations. Transactions of the Institute of Measurement and Control, 31 (2). pp. 117-128. ISSN 0142-3312 (doi:10.1177/0142331207086813)

Burr, T.L., Hamada , M., and Howell, J. (2009) Measurement error modeling and simulation in solution monitoring for safeguards. In: 50th INMM Meeting, 12-16 July 2009, Tucson, AZ..

Burr, T.L., Howell, J. , and Bevan, G. (2009) The Optimal Performance of Current Solution Monitoring Evaluation System Approaches. In: 50th INMM Meeting, 12-16 July 2009, Tucson, Az..

Burr, T.L., Howell, J. , Longo, C., and Suzuki, M. (2009) Change Detection in Solution Monitoring for Safeguards. In: 50th INMM Meeting, 12-16 July 2009, Tucson, Az..

Burr, T.L., Howell, J. , Suzuki, M., Crawford, J., and Williams, T. (2009) Evaluation of loss detection methods in solution monitoring for nuclear safeguards. In: Sixth American Nuclear Society International Topical Meeting on Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technologies, 5-9 April 2009, Knoxville, Tn..

Howell, J, and Bedell, J (2009) Data Consistency Evaluation in GCEPs. In: 49th Annual INMM Meeting, Tucson, Arizona.

Howell, J. (2009) Differentiating between normal and abnormal situations with solution monitoring systems. In: 50th INMM Annual Meeting, 12-16 Jul 2009, Tucson, Arizona.

Howell, J. (2009) Tank monitoring evaluation systems: methods and algorithms. In: 50th INMM Annual Meeting, 12-16 Jul 2009, Tucson, Arizona.

Howell, J. (2009) The inspector interface in solution monitoring systems. In: 51st INMM Annual Meeting, 11-15 Jul 2010, Baltimore.

Howell, J., Friend, P., Jones, D., and Taylor, C. (2009) Load-cell-based mass evaluation systems re-assessed on the basis of Urenco(Capenhurst) load cell data. In: 31st ESARDA Annual Meeting, 26-28 May 2009, Vilnius, Lithuania.

2008

Binner, R., and Howell, J. (2008) Practical Issues Relating To Tank Volume Determination. Industrial Engineering and Chemistry research, 47 (5). pp. 1533-1545. ISSN 0888-5885 (doi:10.1021/ie061615t)

Binner, R., Howell, J. , Janssens-Maenhout, G., Sellinschegg, D., and Zhao, K. (2008) Practical Issues Relating to Tank Volume Determination. Industrial and Engineering Chemistry Research, 47 (5). pp. 1533-1545. ISSN 0888-5885 (doi:10.1021/ie061615t)

Burr, T.L., Ehinger, M., and Howell, J. (2008) A Review of Process Monitoring for Safeguards. In: ANS-INMM 8th International Conference on Facility Operations Safeguards Interface, Portland, Or..

Burr, T.L., Ehinger, M., Howell, J. , and Pomeroy, G. (2008) Reducing Inspector Uncertainty via Solution Monitoring. In: 49th Annual INMM Meeting, 13-17 July 2008, Tucson, Arizona.

Delbeke, J.F.A., Howell, J. , Eklund, G., Peerani, P., and Janssens, W. (2008) The real time mass evaluation system as a tool for detection of undeclared cascade operation at GCEPs. In: 8th International Conference on Facility Operations-Safeguards Interface, 30 March - 4 April 2008, Portland, Oregon.

2007

Delbecke, JFA, Howell, J , and Janssens, W (2007) The Detection of Undeclared LEU Production at a GCEP by Real-Time Mass Balancing. In: 48th Annual INMM Meeting, Tucson, Arizona.

Xia, C, Zheng, J, and Howell, J (2007) Isolation of whole-plant multiple oscillations via non-negative spectral decomposition. Chinese Journal of Chemical Engineering, 15 . pp. 353-360.

Zang, XY, and Howell, J (2007) Isolating the source of whole-plant oscillations through bi-amplitude ratio analysis. Control Engineering Practice, 15 . pp. 69-76. (doi:10.1016/j.conengprac.2006.03.006)

2006

Boyer, B, Demuth, S, Dixon, E, and Howell, J (2006) Evaluating New MC&A Concepts for Gas Centrifuge Enrichment Plants. In: IAEA Symposium on International Safeguards, Vienna.

Burr, Tl, Doak, J, and Howell, J (2006) Solution monitoring|: a surveillance measure and a component of nuclear material accounting. In: 47th Annual INMM Meeting, Nashville, Tennessee.

Howell, J, and Caviglia, M (2006) Towards the re-verification of in-process tank calibrations. In: IAEA Symposium on International Safeguards, Vienna.

Zang, XY, and Howell, J (2006) The propagation of whole plant oscillations through a chemical process plant. Journal of Process Control, 16 . pp. 959-970. (doi:10.1016/j.jprocont.2006.05.002)

2005

Xia, C, Howell, J , and Zheng, J (2005) Commissioning-stage poor performance of control loops in process plants. In: IEEE Conf. on Control Applications, Toronto, Canada.

Xia, CM, and Howell, J (2005) Isolating multiple sources of plant-wide oscillations via independent component analysis. Control Engineering Practice, 13 . pp. 1027-1035. (doi:10.1016/j.conengprac.2004.12.003)

Xia, CM, Howell, J , and Thornhill, NF (2005) Detecting and isolating multiple plant-wide oscillations via spectral independent component analysis. Automatica, 41 . pp. 2067-2075. (doi:10.1016/j.automatica.2005.02.011)

Zang, X, and Howell, J (2005) Correlation Dimension and Lyapunov Exponent Based Isolation of Plant Wide Oscillations. In: IFAC Symposium on the Dynamics and Control of Process Sytems, Boston.

Zang, XY, and Howell, J (2005) Isolating the root cause of propagated oscillations in process plants. International Journal of Adaptive Control and Signal Processing, 19 . pp. 247-265. (doi:10.1002/acs.860)

2004

Zang, X, and Howell, J (2004) Comparison of Methods to Identify the Root Cause of Plant-wide Oscillations. In: IEEE Conference on Control Applications, Tapei.

2003

Xia, C., and Howell, J. (2003) Loop status monitoring and fault localisation. Journal of Process Control, 13 (7). pp. 679-691. ISSN 0959-1524 (doi:10.1016/S0959-1524(02)00123-3)

Burr, T.L.., Coulter, C.A.., Howell, J. , and Wangen, L.E. (2003) Solution monitoring: quantitative and qualitative benefits to nuclear safeguards. Journal of Nuclear Science and Technology, 40 (4). pp. 256-263. ISSN 0022-3131

Xia, C, and Howell, J (2003) Isolating multiple sources of plant-wide oscillations via independent component analysis. In: IFAC Symposium Safeprocess, Washington DC.

Zang, X, and Howell, J (2003) Discrimination Between Bad Tuning and Non-linearity Induced Oscillations Through Bispectral Analysis. In: Society of Instrument and Control Engineers' (SICE) Annual Conference, Fukui, Japan.

2002

Chen, J., and Howell, J. (2002) Towards distributed diagnosis of the Tennessee Eastman process benchmark. Control Engineering Practice, 10 (9). pp. 971-987. ISSN 0967-0661 (doi:10.1016/S0967-0661(02)00050-3)

Thornhill, NF, Xia, C, Howell, J , Cox, J, and Paulonis, M (2002) Analysis of plant-wide disturbances through data-driven techniques and process understanding. In: 15th IFAC World Congress, Barcelona.

Xia, C, and Howell, J (2002) Loop status monitoring with fault localisation. In: 52nd CSCHE, Vancouver.

Xia, C., and Howell, J. (2002) Fault localisation based on loop status monitoring. In: IEEE International Conference on Control Applications, 17-20 September 2002, Scottish Exhibition and Conference Centre, Glasgow, Scotland.

Xia, C., and Howell, J. (2002) Loop status monitoring. In: IEE Seminar on Control Loop Performance Monitoring, 26 Nov 2002, London.

Xia, C., and Howell, J. (2002) PI loop status monitoring. In: IEEE International Conference on Control Applications, 17-20 September, 2002., Scottish Exhibition Centre, Glasgow, Scotland..

2001

Chen, J., and Howell, J. (2001) A self-validating control system based approach to plant fault detection and diagnosis. Computers in Chemical Engineering, 25 (2-3). pp. 337-358. ISSN 0098-1354 (doi:10.1016/S0098-1354(00)00661-X)

Howell, J., and Miller, E.C. (2001) Estimation of gross systematic multiplicative biases in reprocessing plant in-process tanks. In: Symposium on International Safeguards: Verification and Nuclear Material Security, October - 2 November 2001, Vienna.

Xia, C., and Howell, J. (2001) Fault localisation in a number of interacting control loops by closed loop monitoring. In: IFAC Workshop on On-Line Fault Detection and Supervision in the Chemical Process Industries, 7-8 June 2001, Korea.

Xia, C., and Howell, J. (2001) Loop Status Statistics. In: IFAC Workshop on On-Line Fault Detection and Supervision in the Chemical Process Industries, 7-8 June 2001, Korea.