Search Results - "David J. Worthington"

Detecting bias due to input modelling in computer simulation by Morgan, Lucy E., Nelson, Barry L., Titman, Andrew C., Worthington, David J.

“…•Simulation output bias caused by input modelling error is considered.•A delta-method approach to bias estimation is presented.•A test for detecting a bias of…”
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A Spline-Based Method for Modelling and Generating A Nonhomogeneous Poisson Process by Morgan, Lucy E., Nelson, Barry L., Titman, Andrew C., Worthington, David J.

“…This paper presents a spline-based input modelling method for inferring the intensity function of a non-homogeneous Poisson process (NHPP) given arrival-time…”
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MULTI-FIDELITY SIMULATION OPTIMISATION FOR AIRLINE DISRUPTION MANAGEMENT by Rhodes-Leader, Luke, Worthington, David J., Nelson, Barry L., Onggo, Bhakti Stephan

“…The airline industry faces many causes of disruption. To minimise financial and reputational impact, the airline must adapt its schedules. Due to the…”
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Inter-Island Dispersal of the Mariana Common Moorhen: A Recolonization by an Endangered Species by WORTHINGTON, D. J

“…Mariana Common Moorhens (Gallinula chloropus guami) rapidly colonized a human-made wetland on the Island of Rota in Micronesia. Although prehistoric evidence…”
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Mongooses (Urva auropunctata) as reservoir hosts of Leptospira species in the United States Virgin Islands, 2019-2020 by Cranford, Hannah M, Browne, A Springer, LeCount, Karen, Anderson, Tammy, Hamond, Camila, Schlater, Linda, Stuber, Tod, Burke-France, Valicia J, Taylor, Marissa, Harrison, Cosme J, Matias, Katia Y, Medley, Alexandra, Rossow, John, Wiese, Nicholas, Jankelunas, Leanne, de Wilde, Leah, Mehalick, Michelle, Blanchard, Gerard L, Garcia, Keith R, McKinley, Alan S, Lombard, Claudia D, Angeli, Nicole F, Horner, David, Kelley, Thomas, Worthington, David J, Valiulis, Jennifer, Bradford, Bethany, Berentsen, Are, Salzer, Johanna S, Galloway, Renee, Schafer, Ilana J, Bisgard, Kristine, Roth, Joseph, Ellis, Brett R, Ellis, Esther M, Nally, Jarlath E

“…During 2019-2020, the Virgin Islands Department of Health investigated potential animal reservoirs of Leptospira spp., the bacteria that cause leptospirosis…”
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Mongooses by Schlater, Linda, Nally, Jarlath E, LeCount, Karen, Angeli, Nicole F, Wiese, Nicholas, Mehalick, Michelle, Salzer, Johanna S, Anderson, Tammy, Roth, Joseph, de Wilde, Leah, Valiulis, Jennifer, Taylor, Marissa, Matias, Katia Y, Ellis, Esther M, Kelley, Thomas, Schafer, Ilana J, Bisgard, Kristine, Hamond, Camila, Stuber, Tod, Ellis, Brett R, Browne, A. Springer, Harrison, Cosme J, Lombard, Claudia D, Worthington, David J, Galloway, Renee, Berentsen, Are, Jankelunas, Leanne, Cranford, Hannah M, McKinley, Alan S, Burke-France, Valicia J, Rossow, John, Garcia, Keith R, Blanchard, Gerard L, Medley, Alexandra, Bradford, Bethany, Horner, David

“…During 2019-2020, the Virgin Islands Department of Health investigated potential animal reservoirs of Leptospira spp., the bacteria that cause leptospirosis…”
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Mongooses (Urva auropunctata) as reservoir hosts of Leptospira species in the United States Virgin Islands, 2019–2020 by Hannah M. Cranford, A. Springer Browne, Karen LeCount, Tammy Anderson, Camila Hamond, Linda Schlater, Tod Stuber, Valicia J. Burke-France, Marissa Taylor, Cosme J. Harrison, Katia Y. Matias, Alexandra Medley, John Rossow, Nicholas Wiese, Leanne Jankelunas, Leah de Wilde, Michelle Mehalick, Gerard L. Blanchard, Keith R. Garcia, Alan S. McKinley, Claudia D. Lombard, Nicole F. Angeli, David Horner, Thomas Kelley, David J. Worthington, Jennifer Valiulis, Bethany Bradford, Are Berentsen, Johanna S. Salzer, Renee Galloway, Ilana J. Schafer, Kristine Bisgard, Joseph Roth, Brett R. Ellis, Esther M. Ellis, Jarlath E. Nally

“…During 2019–2020, the Virgin Islands Department of Health investigated potential animal reservoirs of Leptospira spp., the bacteria that cause leptospirosis…”
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Effects of gestation dating in Down's screening by Worthington, D J

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Input uncertainty quantification for simulation models with piecewise-constant non-stationary Poisson arrival processes by Morgan, Lucy E., Titman, Andrew C., Worthington, David J., Nelson, Barry L.

“…Input uncertainty (IU) is the outcome of driving simulation models using input distributions estimated by finite amounts of real-world data. Methods have been…”
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Detecting bias due to input modelling in computer simulation by Morgan, Lucy E., Nelson, Barry L., Titman, Andrew C., Worthington, David J.

“…Bias due to input modelling is almost always assumed negligible and ignored. It is known that increasing the amount of real-world data available for modelling…”
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Evaluation of different weight correction methods for antenatal serum screening using data from two multi-centre programmes by Kennedy, D M, Edwards, V M, Worthington, D J

“…Weight correction of serum markers is widely used when screening for Down's syndrome and open neural tube defects (NTD) because marker concentrations decrease…”
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Human Glutathione Reductase: Purification of the Crystalline Enzyme from Erythorocytes by WORTHINGTON, David J., ROSEMEYER, Michael A.

“…Glutathione reductase from human erythrocytes has been purified 40 000‐fold in 10 steps with an overall yield of 36%. The procedure included bulk separations…”
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Glutathione Reductase from Human Erythrocytes by WORTHINGTON, David J., ROSEMEYER, Michael A.

“…The catalytic properties of glutathione reductase from human erythrocytes have been studied over a range of buffer conditions and substrate concentrations…”
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Glutathione Reductase from Human Erythrocytes by WORTHINGTON, David J., ROSEMEYER, Michael A.

“…Glutathione reductase from human erythrocytes exists predominantly as an entity of 100000 molecular weight under various conditions of pH and ionic strength…”
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Maternal serum screening for trisomy 18: assessing different statistical models to optimize detection rates by Kennedy, David M., Edwards, Vicky M., Worthington, David J.

“…We have evaluated three alternative models for trisomy 18 screening using the maternal serum markers alpha‐fetoprotein (AFP) and intact human chorionic…”
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Abundance, distribution, and sexual segregation of bats in the Pryor Mountains of south central Montana by Worthington, David J

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Glutathione reductase from human erythrocytes. Catalytic properties and aggregation by Worthington, D J, Rosemeyer, M A

“…The catalytic properties of glutathione reductase from human erythrocytes have been studied over a range of buffer conditions and substrate concentrations…”
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Glutathione reductase from human erythrocytes. Molecular weight, subunit composition and aggregation properties by Worthington, D J, Rosemeyer, M A

“…Glutathione reductase from human erythrocytes exists predominatly as an entity of 100 000 molecular weight under various conditions of pH and ionic strength…”
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