Works Published in 2011

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Displaying all 14 works

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

2011 journal article

A Phenomenographic Analysis of Three Real-World Experiences in Clemson University’s Industrial Engineering Program

Journal of Applications and Practices in Engineering Education.

By: G. Bhattacharyya, M. Mayorga & B. Melloy

Source: NC State University Libraries
Added: August 16, 2021

2011 journal article

Evaluating the impact of performance goals on dispatching decisions in emergency medical service

IIE Transactions on Healthcare Systems Engineering, 1(3), 185–196.

TL;DR: Examination of how the goal of maximizing coverage for different response time thresholds impacts patient survival rates in the context of emergency medical dispatch indicates that dispatching ambulances to maximize an eight minute response time threshold simultaneously maximizes patient survival. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Crossref, ORCID
Added: May 17, 2021

2011 journal article

Joint management of capacity and inventory in make-to-stock production systems with multi-class demand

European Journal of Operational Research, 212(2), 312–324.

By: M. Mayorga* & H. Ahn*

author keywords: Inventory; Dynamic programming; Flexible capacity; Joint control; Multi-class demand
TL;DR: The model is formulated as a Markov decision process (MDP) and it is proved that a solution to the optimal joint control problem exists and that a simple heuristic that can adjust production capacity but uses a static production/rationing policy can result in significant savings. (via Semantic Scholar)
Sources: Crossref, ORCID
Added: May 17, 2021

2011 journal article

The minimump-envy location problem: a new model for equitable distribution of emergency resources

IIE Transactions on Healthcare Systems Engineering, 1(2), 101–115.

TL;DR: The minimum p-envy facility location model is proposed which aims to find optimal locations for facilities in order to balance customers’ perceptions of equity in receiving service. (via Semantic Scholar)
Sources: Crossref, ORCID
Added: January 24, 2021

2011 journal article

Predicting the solution time of branch-and-bound algorithms for mixed-integer programs

INFORMS Journal on Computing, 23(3), 392–403.

By: O. Özaltin*, B. Hunsaker* & A. Schaefer*

Contributors: O. Özaltin*, B. Hunsaker* & A. Schaefer*

author keywords: solution time prediction; mixed-integer programming; branch-and-bound algorithm
TL;DR: A double exponential smoothing technique is proposed to predict the solution time of B&B algorithms and an evaluation method is evaluated using three MIP solvers to show that accurate predictions of the solutionTime are possible, even in the early stages of B &B algorithms. (via Semantic Scholar)
Source: ORCID
Added: May 6, 2020

2011 journal article

Nonparametric Independence Screening in Sparse Ultra-High-Dimensional Additive Models

Journal of the American Statistical Association, 106(494), 544–557.

author keywords: Additive model; Independent learning; Nonparametric independence screening; Nonparametric regression; Sparsity; Sure independence screening; Variable selection
TL;DR: This work shows that with general nonparametric models, under some mild technical conditions, the proposed independence screening methods have a sure screening property and the extent to which the dimensionality can be reduced by independence screening is also explicitly quantified. (via Semantic Scholar)
Sources: Crossref, ORCID
Added: January 20, 2020

2011 journal article

Deciphering a methylome: what can we read into patterns of DNA methylation?

Journal of Experimental Biology, 214(19), 3155–3163.

By: K. Flores* & G. Amdam*

author keywords: CG methylation; DNA sequencing; genome analysis; honeybee genome; epigenetics
MeSH headings : Animals; Bees / genetics; Computational Biology / methods; Cytosine / metabolism; DNA Methylation / genetics; Epigenomics / methods; Genome / genetics
Source: Crossref
Added: July 20, 2019

2011 journal article

Optimizing the Societal Benefits of the Annual Influenza Vaccine: A Stochastic Programming Approach

OPERATIONS RESEARCH, 59(5), 1131–1143.

TL;DR: This work quantifies the trade-offs involved through a multistage stochastic mixed-integer program that determines the optimal flu shot composition and its timing in a Stochastic and dynamic environment and incorporates risk sensitivity through mean-risk models. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2011 journal article

Timing of HAART initiation and clinical outcomes in human immunodeficiency virus type 1 seroconverters

Archives of Internal Medicine, 171(17), 1560–1569.

By: M. Funk, J. Fusco, S. Cole, J. Thomas, K. Porter, J. Kaufman, M. Davidian, A. White, K. Hartmann, J. Eron

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

2011 journal article

A Moment-Adjusted Imputation Method for Measurement Error Models

BIOMETRICS, 67(4), 1461–1470.

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

author keywords: Conditional score; Measurement error; Nonlinear models; Regression calibration
MeSH headings : Algorithms; Blood Pressure Determination / methods; Computer Simulation; Data Interpretation, Statistical; Heart Failure / diagnosis; Heart Failure / epidemiology; Humans; Models, Statistical; Reproducibility of Results; Sensitivity and Specificity
TL;DR: An imputation approach called moment‐adjusted imputation that is flexible and relatively automatic that can be used to adjust a variety of analyses quickly, and it performs well under a broad range of circumstances is proposed. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2011 journal article

Inference on treatment effects from a randomized clinical trial in the presence of premature treatment discontinuation: the SYNERGY trial

BIOSTATISTICS, 12(2), 258–269.

By: M. Zhang*, A. Tsiatis n, M. Davidian n, K. Pieper* & K. Mahaffey*

author keywords: Dynamic treatment regime; Inverse probability weighting; Potential outcomes; Proportional hazards model
MeSH headings : Acute Coronary Syndrome / drug therapy; Algorithms; Computer Simulation; Endpoint Determination; Enoxaparin / administration & dosage; Enoxaparin / adverse effects; Enoxaparin / therapeutic use; Hemorrhage / etiology; Heparin / administration & dosage; Heparin / adverse effects; Heparin / therapeutic use; Humans; Intention to Treat Analysis; Models, Statistical; Monte Carlo Method; Mortality; Multicenter Studies as Topic; Probability; Proportional Hazards Models; Randomized Controlled Trials as Topic / methods; Survival Analysis; Treatment Outcome; Withholding Treatment / statistics & numerical data
TL;DR: The Superior Yield of the New Strategy of Enoxaparin, Revascularization, and GlYcoprotein IIb/IIIa inhibitors (SYNERGY) was a randomized, open-label, multicenter clinical trial comparing 2 anticoagulant drugs on the basis of time-to-event endpoints. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2011 journal article

Connections between survey calibration estimators and semiparametric models for incomplete data discussion

International Statistical Review, 79(2), 221–223.

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

2011 journal article

Doubly Robust Estimation of Causal Effects

AMERICAN JOURNAL OF EPIDEMIOLOGY, 173(7), 761–767.

By: M. Funk, D. Westreich, C. Wiesen, T. Stuermer, M. Brookhart & M. Davidian*

author keywords: causal inference; epidemiologic methods; propensity score
MeSH headings : Causality; Computer Simulation; Confidence Intervals; Confounding Factors, Epidemiologic; Epidemiologic Methods; Humans; Likelihood Functions; Models, Statistical; Monte Carlo Method; Propensity Score; Regression Analysis
TL;DR: The authors present a conceptual overview of doubly robust estimation, a simple worked example, results from a simulation study examining performance of estimated and bootstrapped standard errors, and a discussion of the potential advantages and limitations of this method. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2011 journal article

Improved Doubly Robust Estimation When Data Are Monotonely Coarsened, with Application to Longitudinal Studies with Dropout

BIOMETRICS, 67(2), 536–545.

author keywords: Coarsening at random; Discrete hazard; Dropout; Longitudinal data; Missing at random
MeSH headings : Acquired Immunodeficiency Syndrome; Biometry / methods; Computer Simulation; Humans; Longitudinal Studies; Models, Statistical; Statistical Distributions
TL;DR: This work proposes a DR estimator applicable in general monotone coarsening problems that achieves comparable or improved performance relative to existing DR methods, which is demonstrated via simulation studies and by application to data from an AIDS clinical trial. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

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