Marcia Lynn Gumpertz

Works (47)

Updated: April 5th, 2024 00:12

2021 journal article

Genotype, Environment, Year, and Harvest Effects on Fruit Quality Traits of Five Blueberry (Vaccinium corymbosum L.) Cultivars

AGRONOMY-BASEL, 11(9).

author keywords: blueberry; Vaccinium corymbosum; genotype by environment; fruit quality; Maker-Assisted-Selection
TL;DR: Assessment of genotypic performance of five blueberry cultivars indicated that genotype was a significant source of variation for most phenotypic characteristics and clonal plant replicates within a genotype, harvest, and environment, in addition to individual fruit measures, were the most significant sources of variability. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: September 8, 2021

2020 journal article

Comparison of the Effectiveness of Online Homework With Handwritten Homework in Electrical and Computer Engineering Classes

IEEE TRANSACTIONS ON EDUCATION, 63(3), 209–215.

By: H. Trussell n & M. Gumpertz n

author keywords: Electronic mail; Software; Education; Standards; Electrical engineering; Testing; Programming; Effectiveness; handwritten homework; online homework; statistical analysis; traditional homework; WeBWorK
TL;DR: The result is that there is no significant statistical difference in the two modalities to predict final exam scores, indicating that the advantages of using the automated online system can be obtained with no detrimental effect on the students’ learning. (via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 24, 2020

2020 journal article

Tenure and Promotion Outcomes at Four Large Land Grant Universities: Examining the Role of Gender, Race, and Academic Discipline

RESEARCH IN HIGHER EDUCATION, 61(5), 628–651.

By: R. Durodoye*, M. Gumpertz n, A. Wilson n, E. Griffith n & S. Ahmad*

author keywords: Tenure; Faculty; Race; Gender; Discipline
UN Sustainable Development Goal Categories
5. Gender Equality (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 13, 2020

2017 journal article

Retention and promotion of women and underrepresented minority faculty in science and engineering at four large land grant institutions

PLoS One, 12(11).

By: M. Gumpertz, R. Durodoye, E. Griffith & A. Wilson

Source: NC State University Libraries
Added: August 6, 2018

2010 journal article

Prediction of whole-stem alpha-cellulose yield, lignin content, and wood density in juvenile and mature loblolly pine

Southern Journal of Applied Forestry, 34(2), 84–90.

By: M. Aspinwall, B. Li, S. McKeand, F. Isik & M. Gumpertz

Source: NC State University Libraries
Added: August 6, 2018

2010 journal article

Selection efficiency for solid wood traits in pinus taeda using time-of-flight acoustic and micro-drill resistance methods

Forest Science, 56(3), 233–241.

By: J. Eckard, F. Isik, B. Bullock, B. Li & M. Gumpertz

Source: NC State University Libraries
Added: August 6, 2018

2009 journal article

Avian Response to Microclimate in Canopy Gaps in a Bottomland Hardwood Forest

SOUTHEASTERN NATURALIST, 8(1), 107–120.

By: T. Champlin n, J. Kilgo*, M. Gumpertz n & C. Moorman n

UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
14. Life Below Water (Web of Science)
15. Life on Land (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2009 article

Introduction to this special issue on statistics for wildfire processes

Gumpertz, M. (2009, June). ENVIRONMENTAL AND ECOLOGICAL STATISTICS, Vol. 16, pp. 105–106.

By: M. Gumpertz n

UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

An evaluation of selection for volume growth in loblolly pine

SILVAE GENETICA, 57(1), 22–28.

By: J. Sherrill*, T. Mullin*, B. Bullock n, S. McKeand n, R. Purnell*, M. Gumpertz, F. Isik n

author keywords: bark thickness; genotype by treatment interaction; stem taper; volume gain; Pinus taeda L.; stem volume; tree improvement; stem form
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2008 journal article

Analysis of cellulose microfibril angle using a linear mixed model in Pinus taeda clones

CANADIAN JOURNAL OF FOREST RESEARCH, 38(6), 1676–1689.

By: F. Isik n, M. Gumpertz n, B. Li n, B. Goldfarb n & X. Sun n

UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2008 journal article

Effect of prior tillage and soil fertility amendments on dispersal of Phytophthora capsici and infection of pepper

EUROPEAN JOURNAL OF PLANT PATHOLOGY, 120(3), 273–287.

By: B. Liu n, M. Gumpertz n, S. Hu n & J. Ristaino n

Contributors: B. Liu n, M. Gumpertz n, S. Hu n & J. Ristaino n

author keywords: Phytophthora capsici; epidemiology; organic amendment; physical; chemical and biological parameters; disease spread
TL;DR: Both the previous tillage and fertility amendments affected the incidence of disease and dispersal of the pathogen and soil water content, soil porosity, humic matter content, and net mineralizable levels nitrogen were positively correlated and bulk density was negatively correlated with final incidence of Disease. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2008 journal article

Septic tank additive impacts on microbial populations

Journal of Environmental Health, 70(6), 22–27.

By: S. Pradhan, M. Hoover, G. Clark, M. Gumpertz, A. Wollum, C. Cobb, J. Strock

Source: NC State University Libraries
Added: August 6, 2018

2007 journal article

Effect of organnic, sustainable, and conventional management strategies in grower fields on soil physical, chemical, and biological factors and the incidence of Southern blight

APPLIED SOIL ECOLOGY, 37(3), 202–214.

By: B. Liu n, C. Tu n, S. Hu n, M. Gumpertz n & J. Ristaino n

Contributors: B. Liu n, C. Tu n, S. Hu n, M. Gumpertz n & J. Ristaino n

author keywords: chemical and biological properties; organic and conventional farms; microbial communities; functional diversity; species diversity; biolog; DGGE
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2007 journal article

Groundwater nitrate spatial and temporal patterns and correlations: Influence of natural controls and nitrogen management

VADOSE ZONE JOURNAL, 6(1), 53–66.

By: N. Hong*, J. White n, R. Weisz n, M. Gumpertz n, M. Duffera n & D. Cassel n

UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2007 journal article

Long-term effects of organic and synthetic soil fertility amendments on soil microbial communities and the development of southern blight

SOIL BIOLOGY & BIOCHEMISTRY, 39(9), 2302–2316.

By: B. Liu n, M. Gumpertz n, S. Hu n & J. Ristaino n

Contributors: B. Liu n, M. Gumpertz n, S. Hu n & J. Ristaino n

author keywords: Sclerotium rolfsii; soil physical; chemical and biological parameters; organic and synthetic fertility amendments; disease; microbial communities; BIOLOG; DGGE
TL;DR: Results demonstrate that organic soil fertility amendments and cotton gin trash in particular, reduced the development of the disease and affected soil physical, chemical and biological parameters. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2006 journal article

A likelihood ratio test for separability of covariances

JOURNAL OF MULTIVARIATE ANALYSIS, 97(5), 1025–1043.

By: M. Mitchell*, M. Genton* & M. Gumpertz n

author keywords: Kronecker product; multivariate regression; multivariate repeated measures; nonstationary; separable covariance; spatio-temporal process
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Geographic patterns of advanced breast cancer in Los Angeles: Associations with biological and sociodemographic factors (United States)

CANCER CAUSES & CONTROL, 17(3), 325–339.

By: M. Gumpertz n, L. Pickle*, B. Miller* & B. Bell*

author keywords: breast neoplasms; sociodemographic factors; mammography; logistic models; spatial patterns
MeSH headings : Adult; Aged; Aged, 80 and over; Breast Neoplasms / epidemiology; California / epidemiology; Carcinoma, Ductal, Breast / epidemiology; Demography; Female; Forecasting; Humans; Middle Aged; Models, Statistical; Odds Ratio; Risk; SEER Program; Socioeconomic Factors
TL;DR: These models explain most of the geographical patterns and eliminate differences between White and Hispanic but not Asian or Black women, identify subpopulations at high risk of advanced disease, and suggest cancer control opportunities. (via Semantic Scholar)
UN Sustainable Development Goal Categories
1. No Poverty (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2006 conference paper

Predicting whole-stem wood properties in loblolly pine

Information Exchange Group 40 Conference, Incorporating Genetic Advances into Forest Productivity Systems: Value for All Landowners. Exchange Group 40 Conference, Incorporating Genetic Advances into Forest Productivity Systems: Value for All Landowners., 40.

By: M. Aspinwall, B. Li, S. McKeand, F. Isik & M. Gumpertz

Source: NC State University Libraries
Added: August 6, 2018

2006 journal article

Remote Sensing-Informed Variable-Rate Nitrogen Management of Wheat and Corn

Agronomy Journal, 98(2), 327–338.

By: N. Hong*, J. White n, R. Weisz n, C. Crozier n, M. Gumpertz n & D. Cassel n

UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2006 journal article

Spatio-temporal analysis of wildfire ignitions in the St Johns River Water Management District, Florida

INTERNATIONAL JOURNAL OF WILDLAND FIRE, 15(1), 87–97.

By: M. Genton*, D. Butry*, M. Gumpertz n & J. Prestemon*

author keywords: clustering; confidence envelope; fire occurrence; L-function; point process
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Spatial analysis of precision agriculture treatments in randomized complete blocks: Guidelines for covariance model selection

AGRONOMY JOURNAL, 97(4), 1082–1096.

By: N. Hong*, J. White n, M. Gumpertz n & R. Weisz n

UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2005 journal article

Stability of a pancreatic enzyme cocktail during in vitro protein digestibility assays

JOURNAL OF FOOD BIOCHEMISTRY, 29(2), 205–220.

By: Y. Qiao*, M. Gumpertz n & T. Van Kempen*

TL;DR: The results indicated the optimum time for utilization of the enzymes depended on pH, enzyme concentration and presence of substrate. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2005 journal article

Testing for separability of space-time covariances

ENVIRONMETRICS, 16(8), 819–831.

By: M. Mitchell*, M. Genton* & M. Gumpertz n

author keywords: elevated CO2; FACE; Kronecker product; separable space-time covariance
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
15. Life on Land (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2005 conference paper

Total inside-bark volume estimation for loblolly pine (Pinus taeda L.) in genetic trials

Proceedings of the 28th Southern Forest Tree Improvement Conference, 123–125.

By: J. Sherrill, T. Mullin, B. Bullock, S. McKeand, R. Purnell & M. Gumpertz

Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Methane production by mixed ruminal cultures incubated in dual-flow fermentors

JOURNAL OF DAIRY SCIENCE, 87(1), 112–121.

By: J. Eun n, V. Fellner n & M. Gumpertz n

author keywords: continuous culture; methane production; stoichiometric equation; microbial energetics
MeSH headings : Animals; Cattle / metabolism; Diet; Energy Metabolism; Fatty Acids, Volatile / biosynthesis; Female; Fermentation; Hydrogen-Ion Concentration; Lactation; Medicago sativa; Methane / metabolism; Minerals / administration & dosage; Rumen / metabolism; Rumen / microbiology; Soybeans; Vitamins / administration & dosage; Zea mays
TL;DR: Dilution rate and forage-to-concentrate ratio altered the partition of substrate by microbes and underestimated methane output at higher dilution rates and with high forage diets. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2004 book

Planning, construction, and statistical analysis of comparative experiments

By: F. Giesbrecht* & M. Gumpertz*

UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2004 journal article

Quantifying fluid food texture

JOURNAL OF TEXTURE STUDIES, 35(6), 643–657.

By: N. Pollen n, C. Daubert n, R. Prabhasankar n, M. Drake n & M. Gumpertz n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Eastern gamagrass evaluated as hay or silage for lactating dairy cows

Professional Animal Scientists, 19(5), 362.

By: J. Eun n, V. Fellner n, J. Burns n & M. Gumpertz n

Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2003 journal article

Effects of free-air CO2 enrichment and nitrogen supply on the yield of temperate paddy rice crops

FIELD CROPS RESEARCH, 83(3), 261–270.

By: H. Kim*, M. Lieffering*, K. Kobayashi*, M. Okada*, M. Mitchell n & M. Gumpertz n

author keywords: elevated carbon dioxide [CO2]; free-air CO2 enrichment (FACE); global change; nitrogen (N); N x CO2 interaction; rice; yield
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Relationships among rheological and sensorial properties of young cheeses

JOURNAL OF DAIRY SCIENCE, 86(10), 3054–3067.

By: J. Brown n, E. Foegeding n, C. Daubert n, M. Drake n & M. Gumpertz n

author keywords: cheese; texture; rheology; sensory
MeSH headings : Cheese / analysis; Elasticity; Food Technology; Humans; Rheology; Sensation; Viscosity
TL;DR: Analysis of the sensory and rheological properties of young cheeses showed that the cheeses' solid-like response decreased during aging, while phase angle, maximum compliance, and retardation time increased. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Spatio-temporal prediction inside a free-air CO2 enrichment system

JOURNAL OF AGRICULTURAL BIOLOGICAL AND ENVIRONMENTAL STATISTICS, 8(3), 310–327.

By: M. Mitchell & M. Gumpertz n

author keywords: EGLS; elevated CO2; FACE; nonlinear mixed models; nonstationary mean and variance; REML; separable space-time covariance
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2002 article

Stability of pepsin (EC 3.4.23.1) during in vitro protein digestibility assay

Qiao, Y. R., Gumpertz, M., & Van Kempen, T. (2002, September). JOURNAL OF FOOD BIOCHEMISTRY, Vol. 26, pp. 355–375.

By: Y. Qiao*, M. Gumpertz* & T. Van Kempen*

TL;DR: It was found that increase of pH and concentration of pepin increased pepsin's half-life for both specific activity decay and peptide bond hydrolysis, and the results indicated the time needed to maximize pepingin utilization depended on pH and the concentration. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2001 journal article

Comparison of GEE, MINQUE, ML, and REML estimating equations for normally distributed data

AMERICAN STATISTICIAN, 55(2), 125–130.

By: C. Wu n, M. Gumpertz n & D. Boos n

author keywords: correlated data; estimated generalized least squares; generalized estimating equations; marginal model; variance-covariance parameter estimation
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Spatial variability of water and bromide transport through variably saturated soil blocks

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 65(6), 1607–1617.

By: J. Strock*, D. Cassel n & M. Gumpertz n

UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Logistic regression for southern pine beetle outbreaks with spatial and temporal autocorrelation

Forest Science, 46(1), 95–107.

By: M. Gumpertz, C. Wu & J. Pye

Source: NC State University Libraries
Added: August 6, 2018

2000 review

New frontiers in the study of dispersal and spatial analysis of epidemics caused by species in the genus Phytophthora

[Review of ]. ANNUAL REVIEW OF PHYTOPATHOLOGY, 38(2000), 541-+.

By: J. Ristaino n & M. Gumpertz n

Contributors: J. Ristaino n & M. Gumpertz n

author keywords: dispersal; epidemiology; management; molecular epidemiology; spatial pattern analysis; Phytophthora diseases
TL;DR: This chapter discusses the mechanisms of dispersal of members of this important genus and describes several methods that can be used to statistically analyze data for which spatial coordinates are known and testing spatial autocorrelation for binary data or continuous data, semivariograms, and regression models for spatial data. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2000 journal article

Temporal dynamics of Phytophthora blight on bell pepper in relation to the mechanisms of dispersal of primary inoculum of Phytophthora capsici in soil

PHYTOPATHOLOGY, 90(2), 148–156.

By: L. Sujkowski*, G. Parra*, M. Gumpertz* & J. Ristaino*

author keywords: root disease; spatial dynamics
TL;DR: The data from both field and growth-chamber studies demonstrate that the mechanism of dispersal of the primary inoculum in soil can have large effects on the temporal dynamics of disease. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1999 journal article

Bayesian analysis of agricultural field experiments - Discussion

Journal of the Royal Statistical Society. Series B, Methodological, 61(1999), 717–7464.

Marcia Gumpertz

Source: NC State University Libraries
Added: August 6, 2018

1998 chapter

Random coefficient regression

In Samuel Kotz (Editor-in-chief), Encyclopedia of statistical sciences (pp. 581–588). New York: Wiley.

By: M. Gumpertz & S. Pantula

Source: NC State University Libraries
Added: August 6, 2018

1997 journal article

Autologistic model of spatial pattern of Phytophythora epidemic in bell pepper: effects of soil variables on disease presence

Journal of Agricultural, Biological, and Environmental Statistics, 2(2), 131–156.

By: M. Gumpertz, J. Graham & J. Ristaino

Source: NC State University Libraries
Added: August 6, 2018

1997 chapter

Geostatistical applications in epidemiology

In L. J. Francl & D. A. Neher (Eds.), Exercises in plant disease epidemiology (pp. 94–99). St. Paul, Minn.: APS Press.

By: M. Gumpertz, R. Larkin & J. Ristaino

Ed(s): . L. J. Francl & D. Neher

Source: NC State University Libraries
Added: August 6, 2018

1997 chapter

Spatial autocorrelation: Methods for continuous variables

In L. J. Francl & D. A. Neher (Eds.), Exercises in plant disease epidemiology (pp. 72–77). St. Paul, Minn.: APS Press.

By: M. Gumpertz & J. Ristaino

Ed(s): . L. J. Francl & D. Neher

Source: NC State University Libraries
Added: August 6, 2018

1997 chapter

Testing spatial autocorrelation for binary or categorical response variables

In L. J. Francl & D. A. Neher (Eds.), Exercises in plant disease epidemiology (pp. 78–84). St. Paul, Minn.: APS Press.

By: M. Gumpertz

Ed(s): . L. J. Francl & D. Neher

Source: NC State University Libraries
Added: August 6, 2018

1997 journal article

Validity of spatial analyses for large field trials

Journal of Agricultural, Biological, and Environmental Statistics, 2(1), 1–23.

By: C. Brownie & M. Gumpertz

Source: NC State University Libraries
Added: August 6, 2018

1997 chapter

Visualizing spatial patterns

In L. J. Francl & D. A. Neher (Eds.), Exercises in plant disease epidemiology (pp. 59–63). St. Paul, Minn.: APS Press.

By: M. Gumpertz

Ed(s): . L. J. Francl & D. Neher

Source: NC State University Libraries
Added: August 6, 2018

1993 journal article

REPEATED-MEASURES IN RANDOMIZED BLOCK AND SPLIT-PLOT EXPERIMENTS

CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, 23(4), 625–639.

By: M. Gumpertz* & C. Brownie

TL;DR: The analysis is similar to repeated-measures analysis for a completely randomized design, but test statistics must allow for random block × time effects, and standard errors for treatment means must also incorporate block to block variation and variation among plots within a block. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1992 journal article

NONLINEAR-REGRESSION WITH VARIANCE-COMPONENTS - MODELING EFFECTS OF OZONE ON CROP YIELD

CROP SCIENCE, 32(1), 219–224.

By: M. Gumpertz n & J. Rawlings n

TL;DR: A nonlinear model with variance components combines a non linear model for the mean with additive random effects to describe the covariance structure of a nested or split-plot design. (via Semantic Scholar)
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

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