Greg F. Piepel

Regulatory Testing of WTP HL W Glasses for Compliance with Delisting Requirements, VSL-03R3780-1, Rev. 1

Hanford Site (HNF), Richland, WA (United States), Wing Kot, USDOE Office of Environmental Management (EM), USDOE Office of River Protection (ORP), Richland, WA (United States) et autres

(Part of the data collected for this work and discussed in this report was subject to data quality and bias issues. All the affected tests have subsequently been repeated, as directed by the Waste Treatment Plant Project, and new statistical analyses have …

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Regulatory Spike Testing of RPP-WTP LAW and HLW Glasses for Compliance with Land Disposal Restrictions, VSL-03R3760-1, Rev. 1

Hanford Site (HNF), Richland, WA (United States), Wing Kot, USDOE Office of Environmental Management (EM), USDOE Office of River Protection (ORP), Richland, WA (United States) et autres

The United States Department of Energy’s (DOE’s) Hanford site is the current location of storage of about 50 million gallons of mixed waste. This waste is stored in underground tanks at the Hanford site and is both a listed and characteristic waste, …

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Regulatory Testing of RPP-WTP HLW Glasses to Support Delisting Compliance, VSL-04R4780-1, Rev. 0 (Sep 2004)

Hanford Site (HNF), Richland, WA (United States), Wing Kot, USDOE Office of Environmental Management (EM), USDOE Office of River Protection (ORP), Richland, WA (United States) et autres

The primary goal of the testing described in this report was to collect data to demonstrate compliance of the immobilized high-level waste (IHLW) glasses with delisting requirements. The collected data will be used to support a petition to delist the IHLW glasses …

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Slack-variable models versus component-proportion models for mixture experiments: Literature review, evaluations, and recommendations

Greg F. Piepel, Dayton C. Hoffmann, Scott K. Cooley

A mixture experiment (ME) combines components in various proportions and observes the values of one or more responses for each mixture. The proportions of the q components in each mixture must sum to 1.0. Two statistical approaches for modeling MEs have been …

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Nonlinear logistic regression mixture experiment modeling for binary data using dimensionally reduced components

Bryan Stanfill, Greg F. Piepel, John D. Vienna, Scott K. Cooley

Abstract This article motivates, presents, and illustrates an approach using nonlinear logistic regression (NLR) for modeling binary response data from a mixture experiment when the components can be partitioned into groups used to form dimensionally reduced components (DRCs). A DRC is formed …

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Repairing constrained experimental regions and designs for mixture or nonmixture variables when some design points are unacceptable

Greg F. Piepel, Scott K. Cooley

A constrained experimental region (CER) involving mixture variables or nonmixture variables is generally specified by lower and/or upper bounds on the variables and possibly by lower and/or upper bounds on linear combinations of the variables. Additionally, the proportions of mixture variables typically …

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Developing a space-filling mixture experiment design when the components are subject to linear and nonlinear constraints

Greg F. Piepel, Bryan Stanfill, Scott K. Cooley, Bradley Jones et autres

This article presents a case study of developing a space-filling design (SFD) for a constrained mixture experiment when the experimental region is specified by single-component constraints (SCCs), linear multiple-component constraints (LMCCs), and nonlinear multiple-component constraints (NMCCs). Traditional methods and software for designing …

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Improvement of a mixture experiment model relating the component proportions to the size of nanonized itraconazole particles in extemporary suspensions

Franco Pattarino, Greg F. Piepel, Maurizio Rinaldi

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Comparison of false‐negative rates and limits of detection following macrofoam‐swab sampling of Bacillus anthracis surrogates via Rapid Viability PCR and plate culture

Janine R. Hutchison, Greg F. Piepel, Brett G. Amidan, Becky Hess et autres

We evaluated the effects of Bacillus anthracis surrogates, low surface concentrations, surface materials and assay methods on false‐negative rate (FNR) and limit of detection (LOD95) for recovering Bacillus spores using a macrofoam‐swab sampling procedure. Bacillus anthracis Sterne or Bacillus atrophaeus Nakamura spores …

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Developing a space-filling mixture experiment design when the components are subject to linear and nonlinear constraints

Greg F. Piepel, Bryan Stanfill, Scott K. Cooley, Bradley Jones et autres

This article presents a case study of developing a space-filling design (SFD) for a constrained mixture experiment when the experimental region is specified by single-component constraints (SCCs), linear multiple-component constraints (LMCCs), and nonlinear multiple-component constraints (NMCCs). Traditional methods and software for designing …

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In Memoriam: John A. Cornell (1941-2016)

Greg F. Piepel

John A. Cornell (1941–2016)

Greg F. Piepel

"John A. Cornell (1941–2016)." Journal of Quality Technology, 48(4), pp. 301–302

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