Works Published in 2013

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Displaying all 18 works

Sorted by most recent date added to the index first, which may not be the same as publication date order.

2013 journal article

A model for optimally dispatching ambulances to emergency calls with classification errors in patient priorities

IIE Transactions, 45(1), 1–24.

author keywords: Emergency medical dispatch; Markov decision processes
TL;DR: A model for determining how to optimally dispatch ambulances to patients to maximize the long-run average utility of the system, defined as the expected coverage of true high-risk patients. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: May 17, 2021

2013 journal article

Joint location and dispatching decisions for Emergency Medical Services

Computers & Industrial Engineering, 64(4), 917–928.

By: H. Toro-Díaz*, M. Mayorga*, S. Chanta* & L. McLay*

author keywords: Location/allocation in healthcare; Hypercube model; Genetic algorithm
TL;DR: A mathematical formulation that combines an integer programming model representing location and dispatching decisions, with a hypercube model representing the queuing elements and congestion phenomena is developed, concluding that the joint approach can give insights of the implicit trade-offs between several conflicting optimization criteria. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: May 17, 2021

2013 journal article

Districting and dispatching policies for emergency medical service systems to improve patient survival

IIE Transactions on Healthcare Systems Engineering, 3(1), 39–56.

By: M. Mayorga*, D. Bandara* & L. McLay*

TL;DR: Computational results show that integrated districting and dispatching policies are vital in increasing patient survivability. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: May 17, 2021

2013 chapter

Adaptive Q-learning

In M. Bannerjee, F. Bunea, J. Huang, V. Koltchinskii, & M. H. Maathuis (Eds.), From Probability to Statistics and Back: High-Dimensional Models and Processes (pp. 150–162). Beachwood, Ohio: Institute of Mathematical Statistics.

By: Y. Goldberg, R. Song & M. Kosorok

Ed(s): M. Bannerjee, F. Bunea, J. Huang, V. Koltchinskii & M. Maathuis

Source: NC State University Libraries
Added: September 27, 2020

2013 journal article

A Dispatching Model for Server-to-Customer Systems That Balances Efficiency and Equity

Manufacturing & Service Operations Management, 15(2), 205–220.

author keywords: emergency medical services; server-to-customer systems; public health; equity; Markov decision processes; linear programming
TL;DR: This paper forms a model for determining how to optimally dispatch distinguishable servers to prioritized customers given a set of equity constraints and draws upon the decision analytic and social science literature to compare the effects of different notions of equity on the resulting dispatching policies. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: August 28, 2020

2013 chapter

Bias Reduction in Logistic Regression with Estimated Variance Predictors

In ISS-2012 Proceedings Volume On Longitudinal Data Analysis Subject to Measurement Errors, Missing Values, and/or Outliers (pp. 33–51).

By: L. Thomas*, L. Stefanski n & M. Davidian n

UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Crossref, ORCID
Added: March 13, 2020

2013 journal article

Building the Biostatistics Pipeline: Summer Institutes for Training in Biostatistics (SIBS)

CHANCE, 26(1), 4–9.

By: L. Sullivan*, M. Davidian n, A. DeStefano* & R. Stone*

TL;DR: Behind all these discoveries is biostatistics—the science of development of statistical theory and methods for application to data-driven challenges in the health sciences. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 23, 2020

2013 journal article

Prioritization strategies for patient evacuations

Health Care Management Science, 17(1), 77–87.

By: A. Childers*, M. Mayorga* & K. Taaffe*

author keywords: Hospitals; Evacuation; Prioritization; Policy-making
MeSH headings : Algorithms; Computer Simulation; Disaster Planning / organization & administration; Health Care Rationing / organization & administration; Hospital Administration; Policy; Systems Analysis; Transportation of Patients / organization & administration
TL;DR: A dynamic programming model for emergency patient evacuations is presented to show that a greedy, “all-or-nothing” policy is not always optimal as well as discuss insights of the resulting optimal prioritization strategies for unit- or floor-level evacuations. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: December 15, 2019

2013 journal article

A mathematical model of RNA3 recruitment in the replication cycle of Brome Mosaic Virus

International Journal of Pure and Applied Mathematics, 89(2), 251–274.

By: T. Huffman, K. Link, J. Nardini, L. Poag, K. Flores, H. Banks, B. Blasco, J. Jungfleisch, J. Diez

Source: Crossref
Added: August 18, 2019

2013 journal article

The Role of Methylation of DNA in Environmental Adaptation

Integrative and Comparative Biology, 53(2), 359–372.

By: K. Flores*, F. Wolschin* & G. Amdam*

MeSH headings : Adaptation, Physiological / genetics; Animals; Base Sequence / genetics; Bees / genetics; Bees / physiology; DNA Methylation / genetics; Environment; Evolution, Molecular; Genetic Variation; Genome, Insect / genetics; Mutation / genetics; Phenotype
TL;DR: It is proposed that environmentally-induced DNA methylation causes phenotypic heterogeneity that provides a substrate for selection via forces that act on the epigenetic machinery, and selectively favored transitory alterations in the genome invoked byDNA methylation could ultimately become selectable genetic variation through mutation. (via Semantic Scholar)
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: Crossref
Added: July 20, 2019

2013 journal article

Assortment and inventory decisions with multiple quality levels

Annals of Operations Research, 211(1), 301–331.

By: M. Mayorga n, H. Ahn* & G. Aydin

author keywords: Assortment planning; Inventory management; Consumer choice models
UN Sustainable Development Goal Categories
Sources: Web Of Science, Crossref, NC State University Libraries
Added: August 6, 2018

2013 journal article

Assessing the Causal Effect of Organ Transplantation on the Distribution of Residual Lifetime

BIOMETRICS, 69(4), 820–829.

author keywords: Causal inference; G-estimation; Lung transplantation; Martingale theory; Structural nested failure time models
MeSH headings : Adolescent; Adult; Age Distribution; Aged; Aged, 80 and over; Causality; Data Interpretation, Statistical; Humans; Internationality; Life Expectancy; Lung Diseases / mortality; Lung Diseases / surgery; Lung Transplantation / mortality; Middle Aged; Outcome Assessment, Health Care / methods; Survival Rate; Young Adult
TL;DR: A version of G‐estimation is developed that accounts for the fact that treatment assignment is not independent across individuals to estimate the parameters of a structural nested failure time model and leads to valid inference of the effect of transplantation on the distribution of residual lifetime. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 article

The International Year of Statistics: A Celebration and A Call to Action

Davidian, M. (2013, December). JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION, Vol. 108, pp. 1141–1146.

By: M. Davidian n

UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 journal article

Simulated estimates of pre-pregnancy and gestational diabetes mellitus in the US: 1980 to 2008

PLoS One, 8(9).

MeSH headings : Adolescent; Adult; Black People; Body Mass Index; Diabetes, Gestational / epidemiology; Female; Humans; Models, Statistical; Pregnancy; Pregnancy in Diabetics / epidemiology; Prevalence; Risk Factors; United States / epidemiology; White People; Young Adult
TL;DR: Racial disparities in diabetes prevalence during pregnancy appear to stem from a higher prevalence of prepregnancy diabetes, but not GDM, in NHB than NHW. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2013 journal article

Moment adjusted imputation for multivariate measurement error data with applications to logistic regression

COMPUTATIONAL STATISTICS & DATA ANALYSIS, 67, 15–24.

By: L. Thomas*, L. Stefanski n & M. Davidian n

author keywords: Moment adjusted imputation; Multivariate measurement error; Logistic regression; Regression calibration
TL;DR: Moment Adjusted Imputation is method for measurement error in a scalar latent variable that is easy to implement and performs well in a variety of settings and the extension of MAI to the setting of multivariate latent variables involves unique challenges. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 journal article

Robust estimation of optimal dynamic treatment regimes for sequential treatment decisions

BIOMETRIKA, 100(3), 681–694.

By: B. Zhang*, A. Tsiatis n, E. Laber n & M. Davidian n

author keywords: A-learning; Double robustness; Outcome regression; Propensity score; Q-learning
TL;DR: This work proposes an alternative to Q- and A-learning that maximizes a doubly robust augmented inverse probability weighted estimator for population mean outcome over a restricted class of regimes. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2013 journal article

DATA AND IMPLICATION BASED COMPARISON OF TWO CHRONIC MYELOID LEUKEMIA MODELS

MATHEMATICAL BIOSCIENCES AND ENGINEERING, 10(5-6), 1501–1518.

By: R. Everett, Y. Zhao, K. Flores* & Y. Kuang

author keywords: Chronic myeloid leukemia; clinical data; drug resistance; cancer modeling
MeSH headings : Algorithms; Benzamides / administration & dosage; Computer Simulation; Drug Resistance, Neoplasm; Fusion Proteins, bcr-abl / metabolism; Hematopoietic Stem Cells / metabolism; Humans; Imatinib Mesylate; Leukemia, Myelogenous, Chronic, BCR-ABL Positive / epidemiology; Leukemia, Myelogenous, Chronic, BCR-ABL Positive / physiopathology; Models, Biological; Mutation; Piperazines / administration & dosage; Pyrimidines / administration & dosage; Randomized Controlled Trials as Topic; Time Factors; Treatment Outcome
TL;DR: It is suggested that including sub-cellular mechanisms in a mathematical model of CML can increase the accuracy of parameter estimation and may help to predict long-term drug resistance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

A structured population modeling framework for quantifying and predicting gene expression noise in flow cytometry data

APPLIED MATHEMATICS LETTERS, 26(7), 794–798.

By: K. Flores n

author keywords: Structured population models; Distributed parameters; Gene regulatory networks; Gene expression noise; Synthetic biology
TL;DR: The results suggest that cellular switching between high and low expression states and transcriptional re-initiation are important factors needed to accurately describe gene expression noise with a structured population model. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

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