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Articles 1 - 30 of 109
Full-Text Articles in Physical Sciences and Mathematics
A More Efficient Nonparametric Test Of Symmetry Based On Overlapping Coefficient, Hani M. Samawi, Robert L. Vogel
A More Efficient Nonparametric Test Of Symmetry Based On Overlapping Coefficient, Hani M. Samawi, Robert L. Vogel
Biostatistics Faculty Publications
In this paper we provide a more efficient nonparametric test of symmetry based on the empirical overlap coefficient using kernel density estimation applied to an extreme order statistics, namely extreme ranked set sampling. Our simulation investigation reveals that our proposed test of symmetry is at least as powerful as currently available tests of symmetry. Intensive simulation is conducted to examine the power of the proposed test. An illustration is provided using cardiac output and body weight of neonates in a neonatal intensive care unit.
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Georgia Southern ROTC Cadet Ranks Fourth in Nation
Overview Of Inference About Roc Curve In Medical Diagnosis, Jingjing Yin
Overview Of Inference About Roc Curve In Medical Diagnosis, Jingjing Yin
Biostatistics Faculty Publications
Medical diagnosis aims to identify diseased individuals through the evaluation of the measurements of some biomarkers by performing a diagnostic test based on some biomarker measurements. Biomarkers are measured on either discrete or continuous scale and continuous biomarkers are utilized more often in medical practice. This article introduces the most popular tool for evaluating continuous biomarkers: the Receiver Operating Characteristic (ROC) curve.
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Grad Student & Professor featured in GS Foundation Annual Report
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Biology Student & Faculty featured in GS Foundation Annual Report
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- U.S. National Tick Collection Temporarily Closed
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- COSM Faculty Appointed to CSIS
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Graduate Student Completes Research Seminar, MS-APS
Quantum States Localized On Lagrangian Submanifolds, François Ziegler
Quantum States Localized On Lagrangian Submanifolds, François Ziegler
Department of Mathematical Sciences Faculty Presentations
Let X be a symplectic manifold and Aut(L) the automorphism group of a Kostant-Souriau line bundle on X. *Quantum states for X*, as defined by J.-M. Souriau in the 1990s, are certain positive-definite functions on Aut(L) or, less ambitiously, on any “large enough” subgroup G of Aut(L). This definition has two major drawbacks: when G = Aut(L) there are no known examples; and when G is a Lie subgroup the notion is far from selective enough. In this talk I’ll introduce the concept of a quantum state *localized at Y *, where Y is a coadjoint orbit of a subgroup …
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Georgia Southern professor and graduate student replicate the tide
- Scientists replicate the tide with two buckets, aquarium tubing, and a pump
Functions On Adjacent Vertex Degrees Of Trees With Given Degree Sequence, Hua Wang
Functions On Adjacent Vertex Degrees Of Trees With Given Degree Sequence, Hua Wang
Department of Mathematical Sciences Faculty Publications
In this note we consider a discrete symmetric function f(x, y) where f(x; a) + f(y, b) ≥ f(y, a) + f(x, b) for any x ≥ y and a ≥ b, associated with the degrees of adjacent vertices in a tree. The extremal trees with respect to the corresponding graph invariant, defined as Σ uv∈E(T) f(deg(u), deg(v)), are characterized by the “greedy tree” and “alternating greedy tree”. This is achieved through simple generalizations of previously used ideas on similar questions. As special cases, the already known extremal structures of the Randić index follow as corollaries. The extremal structures for …
Symplectic Mackey Theory, Francois Ziegler
Symplectic Mackey Theory, Francois Ziegler
Department of Mathematical Sciences Faculty Publications
Many years ago Kazhdan, Kostant and Sternberg defined the notion of inducing a hamiltonian action from a Lie subgroup. In this paper, we develop the attendant imprimitivity theorem and Mackey analysis in the full generality needed to deal with arbitrary closed normal subgroups.
Information Security Newsletter
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Biology Professor’s research published in the Proceedings of the Royal Society B: Biological Sciences
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Graduate Student Honored with Scholarship by the German Academic Exchange Service
Information Security Newsletter
A Case Study Of How Ninth Grade Mathematics Students Construct Knowledge During A Productive Failure Model, Amy F. Westbrook Dr.
A Case Study Of How Ninth Grade Mathematics Students Construct Knowledge During A Productive Failure Model, Amy F. Westbrook Dr.
Georgia Educational Research Association Conference
The purpose of this qualitative study was to explain how ninth grade mathematics students at a rural high school in Georgia constructed knowledge through student talk when problem solving using Kapur’s (2012) productive failure design. An embedded case study design was used to understand how a group of students constructed knowledge through their use of talk, persistence during the task, and use of prior knowledge while working on a productive failure modeled task. Triangulation resulted from the collected data from multiple sources, which included videotaping, interviewing, and analyzing student artifacts. Utilization of the constructivist perspectives of Vygotsky (1934/1962), Piaget (1971), …
Information Security Newsletter
Information Security Newsletter
The Cosm Newsletter
The COSM Newsletter (2008-2018)
- The College of Science and Mathematics Welcomes New Administration in the Dean’s Office
- COSM Faculty and Staff Recognized at College and University Levels
- College Awards
- University Awards
- Summer SOAR Project: Books for Back Pack Buddies
- COSM Alum Honored in Promotion Ceremony at the Pentagon
- Altrusa partners with Georgia Southern Pre-Vet Students for First Annual Dog Wash
- Two COSM Undergrads selected for Prestigious Summer Research Programs
- The Department of Biology Welcomes New Faculty
- Dr. Ed Mondor Named 2014 Outstanding Advocate for First Year Students
- Distinguished Alumnus Chosen
- Honor’s Day Ceremony Resumes
- Professor Gives Talk at 11th Congress on the Biology of …
Synthetic Lethality As A Promising Approach For Targeted Cancer Prevention, Wei Tu, Hua Wang, Guang Peng
Synthetic Lethality As A Promising Approach For Targeted Cancer Prevention, Wei Tu, Hua Wang, Guang Peng
Department of Mathematical Sciences Faculty Publications
Carcinogenesis is recognized as a multistep process. It occurs over a relative long span of time, which offers intervention opportunities for cancer prevention [1] . Using drugs to prevent cancer rather than treat cancer is the major research goal in the field of ‘chemoprevention’. Tremendous research efforts have been devoted toward using natural, synthetic or biological agents to prevent, suppress or delay the initiation and or the progression of premalignant cells to cancer [1] . However a big challenge for effective cancer prevention is to identify chemoprevention agents with demonstrable efficacy and safety for healthy general …
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Biology Professor Invited to United Nations Meeting in Rome
- Math Faculty Launch Open Source Journal: TAG
Lung Flute Improves Symptoms And Health Status In Copd With Chronic Bronchitis: A 26 Week Randomized Controlled Trial, Sanjay Sethi, Jingjing Yin, Pamela K. Anderson
Lung Flute Improves Symptoms And Health Status In Copd With Chronic Bronchitis: A 26 Week Randomized Controlled Trial, Sanjay Sethi, Jingjing Yin, Pamela K. Anderson
Biostatistics Faculty Publications
Background: Chronic obstructive pulmonary disease (COPD) is characterized by mucus hypersecretion that contributes to disease related morbidity and is associated with increased mortality. The Lung Flute® is a new respiratory device that produces a low frequency acoustic wave with moderately vigorous exhalation to increase mucus clearance. We hypothesized that the Lung Flute, used on a twice daily basis will provide clinical benefit to patients with COPD with chronic bronchitis.
Methods: We performed a 26 week randomized, non-intervention controlled, single center, open label trial in 69 patients with COPD and Chronic Bronchitis. The primary endpoint was change in respiratory symptoms measured …
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Molecular Biology Initiative Named a STEM Education Awards Finalist
Fast Inverse Distance Weighting-Based Spatiotemporal Interpolation: A Web-Based Application Of Interpolating Daily Fine Particulate Matter Pm2.5 In The Contiguous U.S. Using Parallel Programming And K-D Tree, Lixin Li, Travis Losser, Charles Yorke, Reinhard E. Piltner
Fast Inverse Distance Weighting-Based Spatiotemporal Interpolation: A Web-Based Application Of Interpolating Daily Fine Particulate Matter Pm2.5 In The Contiguous U.S. Using Parallel Programming And K-D Tree, Lixin Li, Travis Losser, Charles Yorke, Reinhard E. Piltner
Department of Mathematical Sciences Faculty Publications
Epidemiological studies have identified associations between mortality and changes in concentration of particulate matter. These studies have highlighted the public concerns about health effects of particulate air pollution. Modeling fine particulate matter PM2.5exposure risk and monitoring day-to-day changes in PM2.5 concentration is a critical step for understanding the pollution problem and embarking on the necessary remedy. This research designs, implements and compares two inverse distance weighting (IDW)-based spatiotemporal interpolation methods, in order to assess the trend of daily PM2.5 concentration for the contiguous United States over the year of 2009, at both the census block group level and county level. …
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Georgia Southern University and the Phinizy Center Talk Ogeechee River Project
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- COSM Graduate Student Presents Research at the 247th National ACS Meeting
Epistasis In Predator-Prey Relationships, Iuliia Inozemtseva, James P. Braselton
Epistasis In Predator-Prey Relationships, Iuliia Inozemtseva, James P. Braselton
Department of Mathematical Sciences Faculty Publications
Epistasis is the interaction between two or more genes to control a single phenotype. We model epistasis of the prey in a two-locus two-allele problem in a basic predator-prey relationship. The resulting model allows us to examine both population sizes as well as genotypic and phenotypic frequencies. In the context of several numerical examples, we show that if epistasis results in an undesirable or desirable phenotype in the prey by making the particular genotype more or less susceptible to the predator or dangerous to the predator, elimination of undesirable phenotypes and then genotypes occurs.
Cosm News, Georgia Southern University
Cosm News, Georgia Southern University
College of Science and Mathematics News (2012-2019)
- Ryan Fortenberry’s publication featured by the American Institute of Physics
Fejér And Suffridge Polynomials In The Delayed Feedback Control Theory, Dmitriy Dmitrishin, Anna Khamitova, Anatolii Korenovskyi, Alexander M. Stokolos
Fejér And Suffridge Polynomials In The Delayed Feedback Control Theory, Dmitriy Dmitrishin, Anna Khamitova, Anatolii Korenovskyi, Alexander M. Stokolos
Department of Mathematical Sciences Faculty Publications
A remarkable connection between optimal delayed feedback control (DFC) and complex polynomial mappings of the unit disc is established. The explicit form of extremal polynomials turns out to be related with the Fejer polynomials. The constructed DFC can be used to stabilize cycles of one-dimensional non-linear discrete systems.