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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
Email

 

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Steve P. Verrill
Steve P. Verrill

Steve P. Verrill

Economics, Statistics and Life Cycle Analysis Research
Unit: FPL-4851
Mathematical Statistician
One Gifford Pinchot Drive
Madison, WI
United States
53726-2398

Phone: 608-231-9375
sverrill@fs.fed.us

Research Interest

  • X-ray determination of microfibril angle
  • Predictor-sort sampling
  • Coefficient of variation estimation and testing
  • Modeling air-drying of logs
  • Repetitive member reliability calculations


Below are the 57 US Forest Service publications sorted by year. You may re-sort the list by: Title, Date Posted, Category, Publication or Year.

Publication Year: 2018
 
Title: A fit of a mixture of bivariate normals to lumber stiffness—strength data
Source: Res. Paper FPL-RP-696. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 1-46.
Author(s) Verrill, Steve P.; Owens, Frank C.; Kretschmann, David E.; Shmulsky, Rubin
Year: 2018   view abstract, download publication »
Title: Distributions of MOE and MOR in a full lumber population
Source: Wood and Fiber Science. 50(3): 265-279.
Author(s) Owens, Frank C.; Verrill, Steve P.; Shmulsky, Rubin ; Kretschmann, David E.
Year: 2018   view abstract, download publication »
Publication Year: 2017
 
Title: Effect of sample moisture content on XRD-estimated cellulose crystallinity index and crystallite size
Source: Cellulose. 24(5): 1971-1984.
Author(s) Agarwal, Umesh P.; Ralph, Sally A.; Baez, Carlos; Reiner, Richard S.; Verrill, Steve P.
Year: 2017   view abstract, download publication »
Title: Reminder about potentially serious problems with a type of blocked ANOVA analysis
Source: Research Paper, FPL-RP-683. Madison, WI: USDA, Forest Service, Forest Products Laboratory. 117 p.
Author(s) Verrill, Steve; Kretschmann, David E.
Year: 2017   view abstract, download publication »
Title: Simulations of solid lumber strength property monitoring tests
Source: FPL-RP-684. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 32 p.
Author(s) Verrill, Steve; Kretschmann, David E.; Evans, James W.
Year: 2017   view abstract, download publication »
Title: Statistical models for the distribution of modulus of elasticity and modulus of rupture in lumber with implications for reliability calculations
Source: Res. Pap. FPL-RP-692. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 51 p.
Author(s) Verrill, Steve P.; Owens, Frank C.; Kretschmann, David E.; Shmulsky, Rubin
Year: 2017   view abstract, download publication »
Publication Year: 2016
 
Title: JMFA3--confirmation study looking into rotation and tilt effects on x-ray diffraction microfibril angle estimation
Source: fplrip-4851-017-UW-Verrill-Kretschmann-Evans
Author(s) Evans, Paul G.; Verrill, Steve; Kretschmann, David E.
Year: 2016   view abstract, download publication »
Title: Maximum likelihood estimation of the parameters of a bivariate Gaussian-Weibull distribution from machine stress-rated data
Source: USDA Forest Service, Forest Products Laboratory, Research Paper, FPL-RP-685
Author(s) Verrill, Steve P.; Kretschmann, David E.; Evans, James W.
Year: 2016   view abstract, download publication »
Publication Year: 2015
 
Title: Acoustic Evaluation of Thinning and Biosolid Fertilization Effects on Wood Quality of a Douglas-fir stand
Source: USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-239, 2015; pp. 365-377.
Author(s) Wang, Xiping; Ross, Robert J.; Verrill, Steve; Lowell, Eini; Barbour, Jamie
Year: 2015   view abstract, download publication »
Title: Asymptotically Efficient Estimation of a Bivariate Gaussian-Weibull Distribution and an Introduction to the Associated Pseudo-truncated Weibull
Source: Communications in Statistics - Theory and Methods
Author(s) Verrill, Steve P.; Evans, James W.; Kretschmann, David E.; Hatfield, Cherilyn A.
Year: 2015   view abstract, download publication »
Title: Problems with a Type of Matched Subjects Design and Analysis
Source: In: Proceedings of the 2015 American Statistical Association Joint Statistical Meetings, Section on Physical and Engineering Sciences, pages 3491-3505
Author(s) Verrill, Steve P.; Kretschmann, David E.
Year: 2015   view abstract, download publication »
Publication Year: 2014
 
Title: Reliability Implications in Wood Systems of a Bivariate Gaussian-Weibull Distribution and the Associated Univariate Pseudo-truncated Weibull
Source: Journal of Testing and Evaluation, Volume 42, Number 2, MARCH 2014; 9 p.
Author(s) Verrill, Steve P.; Evans, James W.; Kretschmann, David E.; Hatfield, Cherilyn A.
Year: 2014   view abstract, download publication »
Publication Year: 2013
 
Title: Acoustic sorting models for improved log segregation
Source: Wood and Fiber Science, Volume 45, Number 4, 2013; pp 343–352
Author(s) Wang, Xiping; Verrill, Steve; Lowell, Eini; Ross, Robert J.; Herian, Vicki L.
Year: 2013   view abstract, download publication »
Title: An Evaluation of a Proposed Revision of the ASTM D 1990 Grouping Procedure
Source: USDA Forest Service, Forest Products Laboratory, Research Paper, FPL-RP-671, 2013. 36 p.
Author(s) Verrill, Steve P; Evans, James W.; Kretschmann, David E.; Hatfield, Cherilyn A.
Year: 2013   view abstract, download publication »
Title: Durability of Hardboard Lap Siding
Source: USDA Forest Service, Forest Products Laboratory, Research Paper, FPL-RP-674, 2013; 29 p.
Author(s) Carll, Charles; Boardman, Charles R.; Verrill, Steve P.
Year: 2013   view abstract, download publication »
Publication Year: 2012
 
Title: Approaching zero cellulose loss in cellulose nanocrystal (CNC) production: recovery and characterization of cellulosic solid residues (CSR) and CNC
Source: Cellulose, Published online: 22 August 2012.
Author(s) Wang, Q.Q.; Zhu, J.Y.; Reiner, R.S.; Verrill, S.P.; Baxa, U.; McNeil, S.E.
Year: 2012   view abstract, download publication »
Title: Asymptotically efficient estimation of a bivariate Gaussian–Weibull distribution and an introduction to the associated pseudotruncated Weibull
Source: USDA Forest Service, Forest Products Laboratory, Research Paper, FPL-RP- 666, 2012: 78 p.
Author(s) Verrill, Steve P.; Evans, James W.; Kretschmann, David E.; Hatfield, Cherilyn A.
Year: 2012   view abstract, download publication »
Title: Small Sample Properties of Asymptotically Efficient Estimators of the Parameters of a Bivariate Gaussian–Weibull Distribution
Source: USDA Forest Service, Forest Products Laboratory, Research Paper, FPL-RP-667, 2012: 48 p.
Author(s) Verrill, Steve P.; Evans, James W.; Kretschmann, David E.; Hatfield, Cherilyn A.
Year: 2012   view abstract, download publication »
Title: Sources of Confusion in the Determination of ASTM Repetitive Member Factors for the Allowable Properties of Wood Products
Source: J. Struct. Eng. 2012.138:130-133
Author(s) Verrill, S.; Kretschmann, D.
Year: 2012   view abstract, download publication »
Publication Year: 2011
 
Title: Concerns about a Variance Approach to X-ray Diffractometric Estimation of Microfibril Angle in Wood
Source: Wood and Fiber Science, Volume 43, Number 2, 2011, pp. 153-168; 2011
Author(s) Verrill, Steve P.; Kretschmann, David E.; Herian, Victoria L.; Wiemann, Michael C.; Alden, Harry A.
Year: 2011   view abstract, download publication »
Title: On Polydispersity of Plant Biomass Recalcitrance and Its Effects on Pretreatment Optimization for Sugar Production
Source: Bioenerg. Res. (2011) 4:201-210; 2011
Author(s) Zhu, J.Y.; Verrill, Steve V.; Liu, Hao; Herian, Victoria L.; Pan, Xuejun; Rockwood, Donald L.
Year: 2011   view abstract, download publication »
Publication Year: 2010
 
Title: Concerns about a Variance Approach to the X-ray Diffractometric Estimation of Microfibril Angle in Wood
Source: USDA Forest Service, Forest Products Laboratory, Research Paper FPL-RP-658, 2010
Author(s) Verrill; Steve P.; Kretschmann; David E.; Herian; Victoria L.; Wiemann; Michael; Alden; Harry A.
Year: 2010   view abstract, download publication »
Title: Repetitive Member Factors for the Allowable Properties of Wood Products
Source: US Forest Service, Forest Products Laboratory, Research Paper FPL-RP-657, 2010
Author(s) Verrill; Steve P.; Kretschmann; David E.
Year: 2010   view abstract, download publication »
Publication Year: 2009
 
Title: Acoustic Sorting Models for Log Segregation
Source: In: Proceedings of the 16th international symposium on nondestructive testing and evaluation of wood. 2009 October 12-14. Beijing, China. Beijing Forestry University, Beijing, China. Dr. Houjian Zhang and Dr. Xiping Wang, eds. p. 45-51.
Author(s) Wang, Xiping; Verrill, Steve; Lowell, Eini; Ross, Robert; Herian, Vicki
Year: 2009   view abstract, download publication »
Title: Heat-Treatment Options and Heating Times for Ash Firewood
Source: USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-187, October 2009
Author(s) Xiping Wang; Richard Bergman; William T. Simpson; Steve Verrill; Terry Mace
Year: 2009   view abstract, download publication »
Title: Material Variability and Repetitive Member Factors for the Allowable Properties of Engineered Wood Products
Source: Journal of Testing and Evaluation, Vol. 37, No. 6, pp. 1-9; 2009
Author(s) Verrill, Steve; Kretschmann, David E.;
Year: 2009   view abstract, download publication »
Title: Statistical Framework for Comparing Lumber Sorting Procedures
Source: USDA Forest Service, Forest Products Laboratory, Research Paper, FPL-RP-651, July 2009
Author(s) Steve Verrill; Richard A. Johnson; James W. Evans
Year: 2009   view abstract, download publication »
Publication Year: 2008
 
Title: Material variability and repetitive member allowable property adjustments in forest products engineering
Source: Research Paper FPL-RP-649. Madison, WI: U.S. Department of Agriculture,Forest Service, Forest Products Laboratory. 36 pages.
Author(s) Verrill, Steve; Kretschmann, David
Year: 2008   view abstract, download publication »
Title: The distribution of McKay's approximation for the coefficient of variation
Source: Statistics & Probability Letters 78 (2008) 10 - 14 ; 2008
Author(s) Forkman, Verrill
Year: 2008   view abstract, download publication »
Publication Year: 2007
 
Title: Confidence bounds and hypothesis tests for normal distribution coefficients of variation
Source: Research Paper FPL-RP-638. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 57 pages
Author(s) Verrill, Steve P.; Johnson, Richard A.
Year: 2007   view abstract, download publication »
Title: Confidence Bounds and Hypothesis Tests for Normal Distribution Coefficients of Variation
Source: Communications in Statistics-Theory and Methods, 36: 2187-2206, 2007
Author(s) Verrill, Johnson
Year: 2007   view abstract, download publication »
Title: Rate of convergence of k-step Newton estimators to efficient likelihood estimators
Source: Statistics & probability letters. Vol. 77 (2007): Pages 1371-1376.
Author(s) Verrill, Steve
Year: 2007   view abstract, download publication »
Publication Year: 2006
 
Title: JMFA2-A Graphically Interactive Java Program That Fits Microfibril Angle X-ray Diffraction Data
Source: Research Paper FPL-RP-635. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 69 pages
Author(s) Verrill, Steve P.; Kretschmann, David E.; Herian, Victoria L.
Year: 2006   view abstract, download publication »
Publication Year: 2005
 
Title: Improved utilization of small-diameter ponderosa pine in glulam timber
Source: Res. Pap. FPL-RP-625. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 38 p.
Author(s) Hernandez, Roland; Green, David W.; Kretschmann, David E.; Verrill, Steven P.
Year: 2005   view abstract, download publication »
Title: The decline and fall of Type II error rates
Source: Research Paper FPL-RP-628. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 11 p.
Author(s) Verrill, Steve; Durst, Mark
Year: 2005   view abstract, download publication »
Title: The Decline and Fall of Type II Error Rates
Source: The American Statician, November 2005, Vol. 59, No. 4, pp. 287-291; 2005
Author(s) Verrill, Steve; Durst, Mark
Year: 2005   view abstract, download publication »
Publication Year: 2004
 
Title: Estimating the board foot to cubic foot ratio
Source: Res. Pap. FPL-RP-616. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 18 pages
Author(s) Verrill, Steve P.; Herian, Victoria L.; Spelter, Henry N.
Year: 2004   view abstract, download publication »
Title: Predictor Sort Sampling and Confidence Bounds on Quantiles I Asymptotic Theory
Source: FPL-RP-623, August 2004; Forest Products Laboratory Research Paper
Author(s) Verrill, Steve; Herian, Victoria L.; Green, David W.
Year: 2004   view abstract, download publication »
Publication Year: 2003
 
Title: Confidence bounds for normal and lognormal distribution coefficients of variation
Source: Res. Pap. FPL-RP-609. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 13 pages
Author(s) Verrill, Steve
Year: 2003   view abstract, download publication »
Title: Heat sterilization time of ponderosa pine and Douglas-fir boards and square timbers
Source: Res. Pap. FPL-RP-607. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 24 p.
Author(s) Simpson, William T.; Wang, Xiping; Verrill, Steve
Year: 2003   view abstract, download publication »
Publication Year: 2002
 
Title: Predictor sort sampling and one-sided confidence bounds on quantiles
Source: Proceedings, 2001 American Statistical Association Annual Meeting, Physical Sciences and Engineering Section, 2001 August 5-9, Atlanta, GA. Alexandria, VA : American Statistical Association, 2002.
Author(s) Verrill, Steve; Herian, Victoria L.; Green, David W.
Year: 2002   view abstract, download publication »
Publication Year: 2001
 
Title: An inverse moisture diffusion algorithm for the determination of diffusion coefficient
Source: Drying technology. Vol. 19, no. 8 (2001): Pages 1555-1568
Author(s) Liu, Jen Y.; Simpson, William T.; Verrill, Steve P.
Year: 2001   view abstract, download publication »
Title: Rolling your own : linear model hypothesis testing and power calculations via the singular value decomposition
Source: [Statistical computing & statistical graphics newsletter]. Vol. 12, no. 1 [2001]: Pages 15-18
Author(s) Verrill, Steve
Year: 2001   view abstract, download publication »
Publication Year: 2000
 
Title: An inverse moisture diffusion algorithm for the determination of diffusion coefficient
Source: [Proceedings of the 12th International Drying Symposium IDS2000 : 28-31 August 2000 : Noordwijkerhout, The Netherlands. Amsterdam, The Netherlands : Elsevier, 2000].:9 p. : ill.
Author(s) Liu, Jen Y.; Simpson, William T.; Verrill, Steve P.
Year: 2000   view abstract, download publication »
Title: Estimating Dry-Kiln Schedules for Hardwoods
Source: USDA Forest Service, Forest Products Laboratory, Techlines, 2000
Author(s) Simpson, William; Verrill, Steve
Year: 2000   view abstract, download publication »
Publication Year: 1999
 
Title: When Good Confidence Intervals Go Bad: Predictor Sort Experiments and ANOVA
Source: The American Statistician, February 1999, Volume 53, Number 1; pp. 38-42.
Author(s) Verrill, Steve
Year: 1999   view abstract, download publication »
Publication Year: 1998
 
Title: Influence of Cambial Age and Growth Conditions on Microfibril Angle in Young Norway Spruce (Picea abies [L.] Karst.)
Source: Holzforschung, 52 (1998) 573-581
Author(s) Lindstrom, Hakan; Evans, James W.; Verrill, Steve P.
Year: 1998   view abstract, download publication »
Publication Year: 1997
 
Title: Estimating kiln schedules for tropical and temperate hardwoods using specific gravity
Source: Forest Prod. J. 47(7/8):64-68
Author(s) Simpson, William T.; Verrill, Steve P.
Year: 1997   view abstract, download publication »
Title: TT : a program that implements predictor sort design and analysis
Source: General Technical Report FPL-GTR-101):21 p. ; 28 cm.
Author(s) Verrill, S. P.; Green, D. W.; Herian, V. L.
Year: 1997   view abstract, download publication »
Title: Variations of microfibril angle in loblolly pine: comparison of iodine crystallization and x-ray diffraction techniques
Source: Proc of the IAWA/IUFRO Intl Workshop on the Significance of Microfibril Angle to Wood Quality; Westport, New Zealand, November 1997; pp. 157-177
Author(s) Kretschmann, David E.; Alden, Harry A.; Verrill, Steve
Year: 1997   view abstract, download publication »
Publication Year: 1996
 
Title: Predictor sort sampling, tight t`s, and the analysis of covariance : theory, tables, and examples
Source: (Research paper FPL-RP-558):105 p. : ill. ; 28 cm.
Author(s) Verrill, S. P.; Green, D. W.
Year: 1996   view abstract, download publication »
Title: VACUUM-PRESSURE SOAK PLUS OVENDRY AS AN ACCELERATED-AGING TEST FOR WOOD-BASED PANEL PRODUCTS
Source: Forest Prod. J. 46(9):84-88.
Author(s) Karlsson, Per O.A.; McNatt, J. Dobbin; Verrill, Steven P.
Year: 1996   view abstract, download publication »
Publication Year: 1995
 
Title: GAS PERMEABILITY OF PLANTATION LOBLOLLY PINE
Source: Wood and Fiber Science. 27(1), 1995, pp. 34-40
Author(s) Milota, Michael R.; Tschernitz, John L.; Verrill, Steve P.; Mianowski, Theodore
Year: 1995   view abstract, download publication »
Title: Laboratory test for grouping tropical species for kiln drying
Source: Wood Science and Technology, Vol. 29, 1995, pp. 353-362
Author(s) Mendes, A. de Souza; Simpson, W. T.; Verrill, S. P.
Year: 1995   view abstract, download publication »
Publication Year: 1993
 
Title: Predictor sort sampling, Tight T's and the Analysis of covariance
Source: Journal of the American Statistical Association March 1993. Volume 88 Number 421. 1993; pp. 119-124.
Author(s) Verrill, Steven
Year: 1993   view abstract, download publication »
Publication Year: 1991
 
Title: Bending Properties of Reinforced and Unreinforced Spliced Nail-Laminated Posts
Source: FPL-RP-503, August 1991; Forest Products Laboratory Research Paper
Author(s) Bohnhoff, David R.; Moody, Russell C.; Verrill, Steve P.; Shirek, Leo F.
Year: 1991   view abstract, download publication »
Publication Year: 1983
 
Title: Mechanical Properties of Longleaf Pine Treated with Waterborne Salt Preservative
Source: FPL-RP-434, August 1983; Forest Products Laboratory Research Paper
Author(s) Bendtsen, B.A.; Gjovik, L.R.; Verrill, S.P.
Year: 1983   view abstract, download publication »
 
Publication Year: 2013
Forest Service researcher conducts an in-grade bending test on Southern pine. David Kretschmann, USDA Forest Service
Highlight ID: 440
Traditional Grading System Updated for Structural Lumber

The Forest Products Laboratory has traditionally provided unbiased information on the properties, characteristics, design, and use of structural wood products to groups and agencies that develop or control standards for ensuring public safety and hea ...