Skip to Main Content U.S. Department of Energy
Fundamental and Computational Sciences Directorate

Staff information

Gregory Piepel

Stat Modlng & Expr Design
Lab Fellow
Pacific Northwest National Laboratory
PO Box 999
MSIN: K7-20
Richland, WA 99352

PNNL Publications

2016

  • Piepel GF. 2016. "In Memoriam: John A. Cornell (1941-2016)." Journal of Quality Technology 48(4):301-302. 
  • Hutchison JR, GF Piepel, BG Amidan, MA Sydor, and BLD Kaiser. 2016. False Negative Rates of a Macrofoam-Swab Sampling Method with Low Surface Concentrations of Two Bacillus anthracis Surrogates via Real-Time PCRPNNL-24204 Rev. 1, Pacific Northwest National Laboratory, Richland, WA. 
  • Piepel GF, SK Cooley, JD Vienna, and JV Crum. 2016. "Designing a Mixture Experiment When the Components are Subject to a Nonlinear Multiple-Component Constraint." Quality Engineering 28(2):220-230.  doi:10.1080/08982112.2015.1086003
  • Piepel GF, BLD Kaiser, BG Amidan, MA Sydor, CA Barrett, and JR Hutchison. 2016. "False-negative rate, limit of detection and recovery efficiency performance of a validated macrofoam-swab sampling method for low surface concentrations of Bacillus anthracis Sterne and Bacillus atrophaeus spores." Journal of Applied Microbiology 121(1):149-162.  doi:10.1111/jam.13128

2015

2014

2013

2012

  • Krauter P, GF Piepel, R Boucher, MS Tezak, BG Amidan, and W Einfeld. 2012. "False-Negative Rate and Recovery Efficiency Performance of a Validated Sponge Wipe Sampling Method." Applied and Environmental Microbiology 78(3):846-854.  doi:10.1128/AEM.07403-11
  • Meyer PA, JA Bamberger, CW Enderlin, JA Fort, BE Wells, SK Sundaram, PA Scott, MJ Minette, GL Smith, CA Burns, MS Greenwood, GP Morgen, EBK Baer, SF Snyder, MK White, GF Piepel, BG Amidan, and A Heredia-Langner. 2012. Pulse Jet Mixing Tests With Noncohesive SolidsPNNL-18098 Rev. 1, Pacific Northwest National Laboratory, Richland, WA. 
  • Piepel GF, SK Cooley, WL Kuhn, DR Rector, and A Heredia-Langner. 2012. Methods for Quantifying the Uncertainties of LSIT Test Parameters, Test Results, and Full-Scale Mixing Performance Using Models Developed from Scaled Test DataPNNL-22033; WPT-RPT-226, Rev0, Pacific Northwest National Laboratory, Richland, WA. 
  • Piepel GF, B Pasquini, SK Cooley, A Heredia-Langner, S Orlandini, and S Furlanetto. 2012. "Mixture-process variable approach to optimize a microemulsion electrokinetic chromatography method for the quality control of a nutraceutical based on coenzyme Q10." Talanta 97:73-82. 
  • Piepel GF, BG Amidan, and R Hu. 2012. "Laboratory studies on surface sampling of Bacillus anthracis contamination: summary, gaps, and recommendations." Journal of Applied Microbiology 113(6):1287-1564.  doi:10.1111/j.1365-2672.2012.05381.x
  • Snee RD, and GF Piepel. 2012. "Assessing Component Effects in Formulation Systems." Quality Engineering 25(1):46-53.  doi:10.1080/08982112.2012.731628

2011

2010

2009

  • Piepel GF, and SM Landmesser. 2009. "Mixture Experiment Alternatives to the Slack Variable Approach ." Quality Engineering 21(3):262-276.  doi:10.1080/08982110902862095
  • Piepel GF. 2009. "Discussion of “Response Surface Design Evaluation and Comparison” by C.M. Anderson-Cook, C.M. Borror, and D.C Montgomery." Journal of Statistical Planning and Inference 139(2):653-656.  doi:10.1016/j.jspi.2008.04.008
  • Borkowski JJ, and GF Piepel. 2009. "Uniform Designs for Highly Constrained Mixture Experiments." Journal of Quality Technology 41(1):35-47. 
  • Meyer PA, JA Bamberger, CW Enderlin, JA Fort, BE Wells, SK Sundaram, PA Scott, MJ Minette, GL Smith, CA Burns, MS Greenwood, GP Morgen, EBK Baer, SF Snyder, M White, GF Piepel, BG Amidan, A Heredia-Langner, SA Bailey, JC Bower, KM Denslow, DE Eakin, MR Elmore, PA Gauglitz, AD Guzman, BK Hatchell, DF Hopkins, DE Hurley, MD Johnson, LJ Kirihara, BD Lawler, JS Loveland, OD Mullen, MS Pekour, TJ Peters, PJ Robinson, MS Russcher, S Sande, C Santoso, SV Shoemaker, SM Silva, DE Smith, YF Su, JJ Toth, JD Wiberg, XY Yu, and N Zuljevic. 2009. Pulse Jet Mixing Tests With Noncohesive SolidsPNNL-18098, Pacific Northwest National Laboratory, Richland, WA. 
  • Piepel GF, and SK Cooley. 2009. "Automated Method for Reducing Scheffé Linear Mixture Experiment Models ." Quality Technology and Quantitative Management 6(3):255-270. 
  • Piepel GF, BG Amidan, and BD Matzke. 2009. Experimental and Sampling Design for the INL-2 Sample Collection Operational TestPNNL-18187, Pacific Northwest National Laboratory, Richland, WA. 
  • Sahni NS, GF Piepel, and T Naes. 2009. "Product and Process Improvement Using Mixture-Process Variable Designs and Robust Optimization Techniques." Journal of Quality Technology 41(2):181-197. 

2008

  • Landmesser S, and GF Piepel. 2008. "Comparison of Slack Variable and Mixture Experiment Approaches." In Proceedings of the American Statistical Association, Statistical Computing Section, Joint Statistical Meetings [CD-ROM], pp. 1711-1717.  American Statistical Association, Alexandria, VA. 
  • Piepel GF, SK Cooley, and MR Paul. 2008. "Upper Tolerance Intervals Adjusted for Multiple Nuisance Uncertainties ." Journal of Quality Technology 40(3):245-258. 
  • Piepel GF, A Heredia-Langner, and SK Cooley. 2008. "Property-Composition-Temperature Modeling of Waste Glass Melt Data Subject to a Randomization Restriction ." Journal of the American Ceramic Society 91(10):3222-3228.  doi:10.1111/j.1551-2916.2008.02590.x
  • Piepel GF, BG Amidan, and BD Matzke. 2008. "Environmental Sampling Procedures and Methods to Respond to Biological Contamination (White Powder)." In Office of Standards 2007/2008 Annual Report: Programs and Accomplishments, pp. 41-42.  Department of Homeland Security, Science and Technology Directorate, Washington, DC. 

2007

  • Piepel GF. 2007. "Mixture Experiments." In Encyclopedia of Statistics in Quality and Reliability, ed. F Ruggeri, R Kenett, and FW Faltin, pp. 1099-1112.  John Wiley & Sons Ltd., Chichester, United Kingdom. 
  • Amidan BG, GF Piepel, BD Matzke, JJ Filliben, and B Jones. 2007. Experimental Design for the INL Sample Collection Operational TestPNNL-17129, Pacific Northwest National Laboratory, Richland, WA. 
  • Piepel GF. 2007. "A Component Slope Linear Model for Mixture Experiments." Quality Technology and Quantitative Management 4(3):331-343. 

2006

  • Piepel GF. 2006. "50 Years of Mixture Experiment Research: 1955-2004." In Response Surface Methodology and Related Topics, ed. A.I. Khuri, pp. 283-327.  World Scientific Press, Singapore, Singapore. 
  • Piepel GF. 2006. "A Note Comparing Component-Slope, Scheffé, and Cox Parameterizations of the Linear Mixture Experiment Model ." Journal of Applied Statistics 33(4):397-403. 

2005

  • Nguyen NK, and GF Piepel. 2005. "Computer-Generated Experimental Designs for Irregular-Shaped Regions." Quality Technology and Quantitative Management 2(2):147-160. 
  • Piepel GF, SK Cooley, and B Jones. 2005. "Construction of a 21-Component Layered Mixture Experiment Design Using a New Mixture Coordinate-Exchange Algorithm." Quality Engineering 17(4):579-594. 

2004

2003

  • Cooley SK, GF Piepel, H Gan, W Kot, and IL Pegg. 2003. "A Two-Stage Layered Mixture Experiment Design for a Nuclear Waste Glass Application-Part 1." In 2003 ASA Proceedings. Papers presented at the Annual Meeting of the American Statistical Association. Joint Statistical Meetings, San Francisco, California, August 3-7, 2003, pp. 1036-1043.  American Statistical Association, Alexandria, VA. 
  • Cooley SK, GF Piepel, H Gan, W Kot, and IL Pegg. 2003. "A Two-Stage Layered Mixture Experiment Design for a Nuclear Waste Glass Application-Part 2." In 2003 ASA Proceedings. Papers presented at the Annual Meeting of the American Statistical Association. Joint Statistical Meetings, San Francisco, California, August 3-7, 2003, pp. 1044-1051.  American Statistical Association, Alexandria, VA. 

2002

  • Piepel GF, JM Szychowski, and JL Loeppky. 2002. "Augmenting Scheffe Linear Mixture Models With Squared and/or Crossproduct Terms." Journal of Quality Technology 34(3):297-314. 
  • Piepel GF, RD Hicks, JM Szychowski, and JL Loeppky. 2002. "Methods for Assessing Curvature and Interaction in Mixture Experiments." Technometrics 44(2):161-172. 
  • Piepel GF, SK Cooley, DK Peeler, JD Vienna, and TB Edwards. 2002. "Augmenting a Waste Glass Mixture Experiment Study with Additional Glass Components and Experimental Runs." Quality Engineering 15(1):91-111. 
  • Smith GLL, HD Smith, MJ Schweiger, and GF Piepel. 2002. "Vitrification and Testing of Hanford Pretreated Low Activity Waste." In Environmental Issues and Waste Management Technologies in the Ceramic and Nuclear Industries VII, proceedings, 103rd Annual Meeting of The American Ceramic Society, held April 22-25, 2001, in Indianapolis, Indiana, USA., vol. 132, ed. Gary L. Smith, S.K. Sundaram, and Dane R. Spearing, pp. 129-140.  The American Ceramic Society, Westerville, OH. 

2001

2000

  • Hrma PR, JD Vienna, JV Crum, GF Piepel, and M Mika. 2000. "Liquidus Temperature of High-Level Waste Borosilicate Glasses with Spinel Primary Phase ." In Scientific Basis for Nuclear Waste Management XXIII, Materials Research Society Symposium Proceedings, vol. 608, ed. Robert W. Smith; David W. Shoesmith, pp. 671-676.  Materials Research Society, Warrendale, PA. 
  • Piepel MG, and GF Piepel. 2000. "How Soil Composition Affects Density and Water Capacity-A Science Fair Project Using Mixture Experiment Methods ." Stats 28:14-20. 
  • Smith GL, LR Greenwood, GF Piepel, MJ Schweiger, HD Smith, MW Urie, and JJ Wagner. 2000. Vitrification and Product Testing of AW-101 and AN-107 Pretreated WastePNNL-13372, Pacific Northwest National Laboratory, Richland, WA. 

1999

  • Piepel GF. 1999. "Modeling Methods for Mixture-of-Mixtures Experiments Applied to a Tablet Formulation Problem." Pharmaceutical Development and Technology 4(4):593-606. 
  • Hrma PR, JD Vienna, M Mika, JV Crum, and GF Piepel. 1999. Liquidus Temperature Data for DWPF GlassPNNL-11790, Pacific Northwest National Laboratory, Richland, WA. 

1998

Science at PNNL

Core Research Areas

User Facilities

Centers & Institutes

Research Highlights

View All Research Highlights & Staff Accomplishments

RSS Feed

Contacts