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Works Published in 2014

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Displaying works 201 - 218 of 218 in total

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

2014 journal article

Unimodal density estimation using Bernstein polynomials

COMPUTATIONAL STATISTICS & DATA ANALYSIS, 72, 13–29.

By: B. Turnbull n & S. Ghosh n 

Contributors: B. Turnbull n & S. Ghosh n 

author keywords: Bernstein polynomials; Density estimation; Mixture models; Unimodal
TL;DR: A flexible class of mixture of Beta densities that are constrained to be unimodal is presented and it is shown that the estimation of the mixing weights, and the number of mixing components, can be accomplished using a weighted least squares criteria subject to a set of linear inequality constraints. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2014 journal article

The effect of initial purity on the stability of solutions in storage

Journal of Biomolecular Screening, 19(2), 308–316.

By: I. Popa-Burke, S. Novick, C. Lane, R. Hogan, P. Torres-Saavedra, B. Hardy, B. Ray, M. Lindsay, I. Paulus, L. Miller

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

2014 journal article

Storage Method Impacts on Ammonia Flux from Broiler Cake and Acid Scrubbers for High Ammonia Concentration Measurements

WATER AIR AND SOIL POLLUTION, 225(1).

By: S. Shah n , H. Yao & J. Osborne n

author keywords: Poultry; Litter; Stockpile; Emission; Cover; Boric acid scrubber; Scrubber efficiency
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Regularized matrix regression

JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES B-STATISTICAL METHODOLOGY, 76(2), 463–483.

By: H. Zhou n & L. Li n

TL;DR: A class of regularized matrix regression methods based on spectral regularization is proposed, and a degrees‐of‐freedom formula is derived to facilitate model selection along the regularization path. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Modeling Endocrine Control of the Pituitary-Ovarian Axis: Androgenic Influence and Chaotic Dynamics

BULLETIN OF MATHEMATICAL BIOLOGY, 76(1), 136–156.

By: A. Hendrix n, C. Hughes n & J. Selgrade n

author keywords: Modeling; Androgens
MeSH headings : Androgens / physiology; Computer Simulation; Feedback, Physiological; Female; Follicle Stimulating Hormone / physiology; Humans; Hypothalamo-Hypophyseal System / physiology; Luteinizing Hormone / physiology; Mathematical Concepts; Menstrual Cycle / physiology; Models, Biological; Nonlinear Dynamics; Ovarian Follicle / physiology; Ovary / physiology; Polycystic Ovary Syndrome / etiology; Polycystic Ovary Syndrome / physiopathology; Systems Biology
TL;DR: It is shown that varying a follicular growth parameter produces preantral stockpiling and a period-doubling cascade resulting in apparent chaotic menstrual cycle behavior and a new model may allow investigators to study possible interventions returning acyclic patients to regular cycles and guide developments of individualized treatments for PCOS patients. (via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
5. Gender Equality (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2014 journal article

MODEL VALIDATION FOR A NONINVASIVE ARTERIAL STENOSIS DETECTION PROBLEM

MATHEMATICAL BIOSCIENCES AND ENGINEERING, 11(3), 427–448.

By: H. Banks n, S. Hu*, Z. Kenz*, C. Kruse, S. Shaw, J. Whiteman, M. Brewin, S. Greenwald, M. Birch n

author keywords: Viscoelastic model; sensitivity analysis; inverse problem; asymptotic theory
MeSH headings : Arterial Occlusive Diseases / diagnosis; Computational Biology; Confidence Intervals; Constriction, Pathologic / diagnosis; Finite Element Analysis; Hemodynamics; Humans; Least-Squares Analysis; Mathematical Concepts; Models, Cardiovascular; Models, Statistical; Phantoms, Imaging
TL;DR: A method has been proposed to detect shear waves in the chest cavity which have been generated by disturbances in the blood flow resulting from a stenosis by using one-dimensional shear wave experimental data from novel acoustic phantoms to validate a corresponding viscoelastic mathematical model. (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

2014 journal article

Feasibility and repeatability of thermal quantitative sensory testing in normal dogs and dogs with hind limb osteoarthritis-associated pain

VETERINARY JOURNAL, 199(1), 63–67.

By: M. Williams  n, A. Kirkpatrick n, E. Griffith n, J. Benito  n, J. Hash n & B. Lascelles  n

author keywords: Canine; Quantitative sensory testing; Osteoarthritis; Thermal threshold
MeSH headings : Animals; Differential Threshold / physiology; Dog Diseases / diagnosis; Dog Diseases / pathology; Dogs; Hindlimb / pathology; Hot Temperature / adverse effects; Neurologic Examination; Osteoarthritis / diagnosis; Osteoarthritis / pathology; Osteoarthritis / veterinary; Pain / diagnosis; Pain / pathology; Pain / veterinary; Pain Threshold
TL;DR: In conclusion, thermal thresholds can be measured in client owned dogs with no prior training and are repeatable from week to week. (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

2014 personal communication

Collaboration To Meet the Statistical Needs in the Chemistry Curriculum

Davidian, M., & Kutal, C. (2014, January).

By: M. Davidian n  & C. Kutal*

author keywords: General Public; First-Year Undergraduate/General; Second-Year Undergraduate; Interdisciplinary/Multidisciplinary; Curriculum
UN Sustainable Development Goal Categories
4. Quality Education (Web of Science)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2014 journal article

Bayesian Binomial Assurance Tests for System Reliability Using Component Data

JOURNAL OF QUALITY TECHNOLOGY, 46(1), 24–32.

By: M. Hamada*, A. Wilson n , B. Weaver *, R. Griffiths & H. Martz

Contributors: M. Hamada*, A. Wilson n , B. Weaver *, R. Griffiths & H. Martz

author keywords: Consumer's and Producer's Posterior Risk; Demonstration Test; Hierarchical Model
Sources: Web Of Science, ORCID
Added: August 6, 2018

2014 journal article

Adaptive Elastic Net for Generalized Methods of Moments

JOURNAL OF BUSINESS & ECONOMIC STATISTICS, 32(1), 30–47.

By: M. Caner* & H. Zhang*

author keywords: GMM; Oracle property; Penalized estimators
TL;DR: A new technique is introduced that can simultaneously estimate and select the model in generalized method of moments (GMM) context and has the oracle property, meaning that it can estimate nonzero parameters with their standard limit and the redundant parameters are dropped from the equations simultaneously. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2014 journal article

A flexible observed factor model with separate dynamics for the factor volatilities and their correlation matrix

STATISTICAL MODELLING, 14(1), 1–20.

By: Y. Ku, P. Bloomfield n & S. Ghosh n 

Contributors: Y. Ku, P. Bloomfield n & S. Ghosh n 

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

2014 journal article

VH1-44 gene usage defines a subset of canine B-cell lymphomas associated with better patient survival

VETERINARY IMMUNOLOGY AND IMMUNOPATHOLOGY, 157(3-4), 125–130.

By: H. Chen n, G. Small *, A. Motsinger-Reif n, S. Suter n & K. Richards n

author keywords: Immunoglobulin heavy chain variable region (VH); B-cell lymphoma; Diffuse large B-cell lymphoma; Survival; VH1-44
MeSH headings : Animals; Dog Diseases / genetics; Dog Diseases / immunology; Dog Diseases / mortality; Dogs / immunology; Humans; Immunoglobulin Heavy Chains / genetics; Immunoglobulin Variable Region / genetics; Lymphoma, B-Cell / genetics; Lymphoma, B-Cell / immunology; Lymphoma, B-Cell / mortality; Lymphoma, B-Cell / veterinary
TL;DR: It is found that VH1-44 was preferentially expressed in the majority of the 52 cBCLs as well as in themajority of the cDLBCL subset of patients, and may have functional implications for c BCL lymphomagenesis, in addition to being a useful prognostic biomarker. (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

2014 journal article

NPHMC: An R-package for estimating sample size of proportional hazards mixture cure model

COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE, 113(1), 290–300.

By: C. Cai *, S. Wang *, W. Lu n & J. Zhang *

author keywords: Proportional hazards mixture cure model; Power; Sample size; Weighted log-rank test; R package
MeSH headings : Proportional Hazards Models; Statistics, Nonparametric; Survival Analysis
TL;DR: An R package NPHMC is developed to determine the sample size needed for a trial with cure fractions, and the PH mixture cure model is an important tool in handling the survival data with possible cure fractions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Multidimensional In Vivo Hazard Assessment Using Zebrafish

Toxicological Sciences, 137(1), 212–233.

By: L. Truong, D. Reif, L. St Mary, M. Geier, H. Truong & R. Tanguay

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

2014 journal article

MM algorithms for geometric and signomial programming

MATHEMATICAL PROGRAMMING, 143(1-2), 339–356.

By: K. Lange * & H. Zhou n

author keywords: Arithmetic-geometric mean inequality; Geometric programming; Global convergence; MM algorithm; Linearly constrained quadratic programming; Parameter separation; Penalty method; Signomial programming
TL;DR: New algorithms for signomial programming, a generalization of geometric programming, are derived based on a generic principle for optimization called the MM algorithm, which can converge to a boundary point or to one point of a continuum of minimum points. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Goodness-of-fit testing-based selection for large-p-small-n problems: A two-stage ranking approach

JOURNAL OF STATISTICAL PLANNING AND INFERENCE, 145, 148–164.

By: X. Ding, L. Li* & L. Zhu

author keywords: Backward screening; Linear model; Marginal effect; Sequential goodness-of-fit testing
TL;DR: A k-step marginal F-test (MFTk) screening in the first stage is developed, equivalent to that used in the sure independence screening (SIS) proposed by Fan and Lv (2008) and makes improvement over the MFT1 mainly on better handling correlations among predictors. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Interquantile shrinkage and variable selection in quantile regression

COMPUTATIONAL STATISTICS & DATA ANALYSIS, 69, 208–219.

By: L. Jiang  n, H. Bondell n & H. Wang n

author keywords: Fused adaptive Lasso; Fused adaptive sup-norm; Oracle; Quantile regression; Smoothing; Variable selection
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Flexible modeling of survival data with covariates subject to detection limits via multiple imputation

COMPUTATIONAL STATISTICS & DATA ANALYSIS, 69, 81–91.

By: P. Bernhardt n, H. Wang n & D. Zhang n

author keywords: Accelerated failure time model; Censored predictor; Complete case; Detection limit; Multiple imputation; Seminonparametric distribution
TL;DR: A computationally-efficient multiple imputation procedure for modeling survival data with covariates subject to detection limits is proposed in the context of an accelerated failure time model with a flexible seminonparametric error distribution. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

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