Digital Commons Network^™

Modification Of The Fundamental Properties Of Light Through Interaction With Nanostructured Materials, David W. Keene Ii

College of Graduate Studies: Theses & Dissertations

The field of photonics has been growing rapidly over the last few decades as it has endeavored to harness the potential of nanostructured materials to utilize the energy and momentum of electromagnetic radiation on the nanoscale. Using metal nanostructures provides the ability to take advantage of the sub-field of plasmonics which holds the promise of opening the world to vast increases in computational power by circumventing the limitations of conventional current that plague today’s processors. With a thorough understanding of this subject we also get one step closer to increasing the efficiency of solar technology, developing a finer scale of …

Discrepancy Analysis Between Close-Range Photogrammetry And Terrestrial Lidar, Sam R. Newsome Jr

College of Graduate Studies: Theses & Dissertations

This study presents a comparison of building measurements performed on 3D models generated by two different approaches. In one approach, the models were produced via close-range photogrammetry. Such models are based on still-frame photographs that are, post-processed with commercially available photogrammetric software. In the second approach, 3D point-cloud models were generated via laser scanning. For this purpose, three case studies were conducted. The first was a simple one story structure, the second was a multi-story Maya ruin, and the third was an earth filled terrace. Several benchmarks within a closed traverse were established to serve as standard georeference points for …

Gorenstein Projective (Pre)Covers, Michael J. Fox

College of Graduate Studies: Theses & Dissertations

The existence of the Gorenstein projective precovers is one of the main open problems in Gorenstein Homological algebra. We give sufficient conditions in order for the class of Gorenstein projective complexes to be special precovering in the category of complexes of R-modules Ch(R). More precisely, we prove that if every complex in Ch(R) has a special Gorenstein flat cover, every Gorenstein projective complex is Gorenstein flat, and every Gorenstein flat complex has finite Goenstein projective dimension, then the class of Gorenstein projective complexes, GP(C), is special precovering in Ch(R).

Gallai-Ramsey Number Of An 8-Cycle, Jonathan Gregory

College of Graduate Studies: Theses & Dissertations

Given a graph G and a positive integer k, define the Gallai-Ramsey number to be the minimum number of vertices n such that any k-edge-coloring of Kn contains either a rainbow (all different colored) triangle or a monochromatic copy of G. In this work, we establish the Gallai-Ramsey number of an 8-cycle for all positive integers.

Stereographic Visualization Of Bose-Einstein Condensate Clouds To Measure The Gravitational Constant, Ed Wesley Wells

College of Graduate Studies: Theses & Dissertations

This thesis describes a set of tools that can be used for the rapid design of atom interferometer schemes suitable for measuring Newton's Universal Gravitation constant also known as "Big G". This tool set is especially applicable to Bose--Einstein--condensed systems present in NASA's Cold Atom Laboratory experiment to be deployed to the International Space Station in 2017. These tools include a method of approximating the solutions of the nonlinear Schrödinger or Gross--Pitaevskii equation (GPE) using the Lagrangian Variational Method. They also include a set of software tools for translating the approximate solutions of the GPE into images of the optical …

Geometric-Based Algorithm For A Full Row-Rank System Matrix Along Multiple Directions In Dt, Igor Lutsenko

College of Graduate Studies: Theses & Dissertations

Discrete tomography (DT) is an image reconstruction procedure that deals with computational synthesis of a cross-sectional image of an object from either transmission or reflection data collected by penetrating an object with X-rays from a small number of different directions, and whose range of the underlying function is discrete. Image reconstruction using algebraic approach is time consuming and the computation cost depends on the size of the system matrix. More scanning directions provide an increase in the reconstructed image quality, however they increase the size of the system matrix dramatically. Deletion of linearly dependent rows of this matrix is necessary …

Gorenstein Projective Precovers In The Category Of Modules, Katelyn Coggins

College of Graduate Studies: Theses & Dissertations

It was recently proved that if R is a coherent ring such that R is also left n-perfect, then the class of Gorenstein projective modules, GP, is precovering. We will prove that the class of Gorenstein projective modules is special precovering over any left GF-closed ring R such that every Gorenstein projective module is Gorenstein flat and every Gorenstein flat module has finite Gorenstein projective dimension. This class of rings includes that of right coherent and left n-perfect rings.

A Qualitative Examination Of The Needs Of Mothers In College In The Rural Southeast, Danielle N. Bostick

College of Graduate Studies: Theses & Dissertations

The purpose of my study was to understand student mothers that attended college in the rural southeast by using an ecological framework to examine the barriers and challenges that they encounter on college campuses. Additionally, the study identified support and the lack of support that the mothers received. The theoretical concepts of intensive mothering, role strain, and role conflict were also used to comprehend how parental obligations can conflict with the expectations of being a college student. In total, 14 participants that attended a mid-size university in the rural southeast agreed to be a part of the study. The criteria …

A Study Of Black Teachers’ Perceptions Of The Academic Achievement Of Black Male Students In Elementary Schools In Rural Georgia, Marshall F. Aker

College of Graduate Studies: Theses & Dissertations

Presently, numerous research studies, articles and reports have shown troubling outcomes regarding the education of Black male students in the United States (Darensbourg, Perez, & Blake, 2010; Lewis, Simon, Uzzell, Horwitz, & Casserly, 2010; Prager, 2011). The performance of Black males on national achievement assessments is lower in comparison to the performance of most other subgroups. The high school graduation rate for Black males in the United States is below most other ethnic subgroups (Schotts Foundation, 2015). Although various strategies are often implemented at the national, state, and local level in attempts to address achievement disparities, these efforts have not …

Design, Analysis, Implementation And Evaluation Of Real-Time Opportunistic Spectrum Access In Cloud-Based Cognitive Radio Networks, Nimish Sharma

College of Graduate Studies: Theses & Dissertations

Opportunistic spectrum access in cognitive radio network is proposed for remediation of spectrum under-utilization caused by exclusive licensing for service providers that are intermittently utilizing spectrum at any given geolocation and time. The unlicensed secondary users (SUs) rely on opportunistic spectrum access to maximize spectrum utilization by sensing/identifying the idle bands without causing harmful interference to licensed primary users (PUs). In this thesis, Real-time Opportunistic Spectrum Access in Cloud-based Cognitive Radio Networks (ROAR) architecture is presented where cloud computing is used for processing and storage of idle channels. Software-defined radios (SDRs) are used as SUs and PUs that identify, report, …

Performance Analysis Of Secondary Users In Heterogeneous Cognitive Radio Network, Tanjil Amin

College of Graduate Studies: Theses & Dissertations

Continuous increase in wireless subscriptions and static allocation of wireless frequency bands to the primary users (PUs) are fueling the radio frequency (RF) shortage problem. Cognitive radio network (CRN) is regarded as a solution to this problem as it utilizes the scarce RF in an opportunisticmanner to increase the spectrumefficiency. InCRN, secondary users (SUs) are allowed to access idle frequency bands opportunistically without causing harmful interference to the PUs. In CRN, the SUs determine the presence of PUs through spectrum sensing and access idle bands by means of dynamic spectrum access. Spectrum sensing techniques available in the literature do not …

A Partition Function Connected With The Göllnitz-Gordon Identities, Nicolas A. Smoot

College of Graduate Studies: Theses & Dissertations

Nearly a century ago, the mathematicians Hardy and Ramanujan established their celebrated circle method to give a remarkable asymptotic expression for the unrestricted partition function. Following later improvements by Rademacher, the method was utilized by Niven, Lehner, Iseki, and others to develop rapidly convergent series representations of various restricted partition functions. Following in this tradition, we use the circle method to develop formulas for counting the restricted classes of partitions that arise in the Gollnitz-Gordon identities. We then show that our results are strongly supported by numerical tests. As a side note, we also derive and compare the asymptotic behavior …

Monte Carlo Algorithm To Study Performance Parameters Of Shuttle Systems, Wolfgang Trummer, Dirk Jodin

14th IMHRC Proceedings (Karlsruhe, Germany – 2016)

Shuttle systems provide alternative solutions in storage technology. Ma-terial flow analyses of these systems are extensive due to complex interac-tion of several shuttles and lift elements. Besides classic cycle time calcu-lation, it also requires advanced analyzing methods. At the Institute of Logistics Engineering (ITL), Graz University of Technology, an innovative, software-based approach has been developed to investigate the performance of shuttle systems. This approach is based on the Monte Carlo method. The software tool takes into account a variety of different systems and operating parameters to reflect operative behavior of shuttle systems.

An Extremal Problem For Finite Lattices, John Goldwasser, Brendan Nagle, Andres Saez

Theory & Applications of Graphs

For a fixed M x N integer lattice L(M,N), we consider the maximum size of a subset A of L(M,N) which contains no squares of prescribed side lengths k(1),...,k(t). We denote this size by ex(L(M,N), {k(1),...,k(t)}), and when t = 1, we abbreviate this parameter to ex(L(M,N), k), where k = k(1).

Our first result gives an exact formula for ex(L( …

2016 Spring Commencement, Georgia Southern University

Commencement Programs

No abstract provided.

2016-2017 Graduate Catalog, Armstrong State University

Armstrong Office of the Registrar: Graduate Catalogs (Archived)

Academic catalog for Armstrong State University.

Eagle Executive Magazine, Georgia Southern University

College of Business: News & Publications

• Eagles on Wall Street 2016
• Living Their Dreams
• Why I Give

Undergraduate Catalog, Georgia Southern University

Undergraduate & Graduate Catalogs

No abstract provided.

2016 - 2017 Undergraduate Catalog, Armstrong State University

Armstrong Office of the Registrar: Undergraduate Catalogs (Archived)

Academic catalog for Armstrong State University.

Crystal Structure Of (E)-2-[(2- Bromo-3-Pyridyl)Methylidene]-6-Methoxy-3,4-Dihydronaphthalen-1-One And 3-[(E)-(6- Methoxy-3,4-Dihydronaphth-2-Oylidene)Methyl]-1h-Pyridin-2-One, Sarah K. Zingales, Morgan E. Moore, Andrew D. Goetz, Clifford W. Padgett

Chemistry: Faculty Publications (1990-2023)

The title compounds C17H14BrNO2, (I), and C17H15NO3, (II), were obtained from the reaction of 6-meth­oxy-3,4-di­hydro-2H-naphthalen-1-one and 2-bromo­nicotinaldehyde in ethanol. Compound (I) was the expected product and compound (II) was the oxidation product from air exposure. In the crystal structure of compound (I), there are no short contacts or hydrogen bonds. The structure does display [pi]-[pi] inter­actions between adjacent benzene rings and adjacent pyridyl rings. Compound (II) contains two independent mol­ecules, A and B, in the asymmetric unit; both are non-planar, the dihedral angles between the meth­oxy­benzene and 1H-pyridin-2-one mean planes being 35.07 (9)° in A and 35.28 (9)°in B. In …

The Effects Of Thermal Opportunity And Habitat On Physiological Performance In Ecologically Distinct Populations Of The Florida Scrub Lizard Sceloporus Woodi, Lauren K. Neel

College of Graduate Studies: Theses & Dissertations

An ectotherm’s ability to thermoregulate affects many physiological traits. Therefore, thermal factors are paramount when considering behavior, activity time, body temperatures, energy budget, and performance capabilities. The Florida scrub lizard (Sceloporus woodi) is a ground-dwelling lizard that occupies longleaf pine and sand pine scrub habitats in the Ocala National Forest. Here, this species’ habitat is maintained by either clear-cut logging in scrub stands, or prescribed burning in long leaf pine stands. These habitat types differ in their dominant vegetation, canopy cover, and availability of vertical perches and thus are ecologically different. I used biophysical models to measure the …

Assessment Of Optimized Electrode Configuration In Electrical Impedance Myography Study Using Genetic Algorithm Via Finite Element Model, Somen Baidya

College of Graduate Studies: Theses & Dissertations

Electrical Impedance Myography (EIM) is a neurophysiologic technique in which high- frequency, low-intensity electrical current is applied via surface electrodes over a muscle or muscle group of interest and the resulting electrical parameters (resistance, reactance and phase) are analyzed to isolate diseased muscles from healthy ones. Beside muscle properties, some other anatomic and non-anatomic factors like muscle shape, subcutaneous fat (SF) thickness, inter-electrode distance, etc. also impact the major EIM parameters and thus affect the EIM analysis outcomes. The purpose of this study is to explore the effects of variation in some of these factors impose on EIM parameters and …

Experimental And Numerical Investigation Of Aerodynamic Performance For Vertical-Axis Wind Turbine Models With Various Blade Designs, Travis E. Salyers

College of Graduate Studies: Theses & Dissertations

The demand for wind energy as a renewable source is rising substantially. A growing interest exists in utilizing potential energy conversion applications in areas with less powerful and less consistent wind conditions. In these areas, vertical-axis wind turbines (VAWTs) possess several advantages over the conventional horizontal-axis type. Savonius turbines are drag-based rotors which operate due to a pressure difference between the advancing and retreating blades. These turbines are simpler in design, less expensive to install, non-dependent of wind direction, and more efficient in lower wind speeds. In the present study, six different rotor designs with equal swept areas are analyzed …

Optimization Of Electroencephalograph-Based Classification For Imaginary Motion Brain Computer Interface Study, Sylvia Bhattacharya

College of Graduate Studies: Theses & Dissertations

Using Electroencephalography (EEG) to detect imaginary motions from brain waves, to interface human and computer is a very nascent and challenging field that started developing rapidly in the past few decades. The technique involves some electrodes attached on the scalp of the patient and the signals generated by the brain while the thought process of the patient is captured and recorded in a computer. This technique of human and computer interfacing is termed as Brain Computer Interface (BCI). Disability is a serious problem of our nation and hence BCI is extremely important in case of people who are incapable of …

Missing Data In Clinical Trial: A Critical Look At The Proportionality Of Mnar And Mar Assumptions For Multiple Imputation, Theophile B. Dipita

College of Graduate Studies: Theses & Dissertations

Randomized control trial is a gold standard of research studies. Randomization helps reduce bias and infer causality. One constraint of these studies is that it depends on participants to obtain the desired data. Whatever the researcher can do, there is a possibility to end up with incomplete data. The problem is more relevant in clinical trials when missing data can be related to the condition under study. The benefits of randomization is compromised by missing data. Multiple imputation is a valid method of treating missing data under the assumption of MAR. Unfortunately this is an unverified assumptions. Current practice advise …

Faculty Senate Librarian's Report 2016 Combined, Georgia Southern

Faculty Senate: Librarian's Reports

No abstract provided.

Faculty Handbook, Georgia Southern University

Faculty Handbooks

Faculty Handbook for Georgia Southern University for the 2016-2017 academic year. The Faculty Handbook is published online by the Office of the Vice President for Academic Affairs and archived in Digital Commons@Georgia Southern.

2016 Georgia Southern University Men's Soccer Media Guide, Georgia Southern University

Men's Soccer Records

• 2016 Media Guide & Record Book Georgia Southern Men's Soccer

2016 Georgia Southern University Women's Soccer Media Guide, Georgia Southern University

Women's Soccer Records

• Women's Soccer 2016 Media Guide & Record Book

2016 Georgia Southern University Softball Media Guide, Georgia Southern University

Women's Softball Records

• Georgia Southern Softball 2016 Media Guide