Digital Commons Network^™

Self-Processing Photopolymer Materials For Versatile Design And Fabrication Of Holographic Sensors And Interactive Holograms, Dervil Cody, Sabad-E Gul, Tatsiana Mikulchyk, Muhammad Irfan, Anastasia Kharchenko, Kamila Goldyn, Suzanne Martin, Svetlana Mintova, John Cassidy, Izabela Naydenova

Articles

The aim of this paper is to discuss the benefits as well as the limitations of utilizing photopolymer materials in the design of holograms that are responsive to changes in their environment, such as changes in the concentration of a specific substance, temperature, and pressure. Three different case studies are presented, including both surface and volume phase holograms, in order to demonstrate the flexibility in the approach of utilizing holographic photopolymers for the design of sensors and interactive optical devices. First, a functionalized surface relief hologram is demonstrated to operate as an optical sensor for the detection of metal ions …

A Physical Biology, The Electron Neutrino Mass, And The Role Of Quantum Mechanics In Nature, Maurice Goodman

Articles

In science we need to remove physics and earth science from the fundamental sciences and treat Biology as a fundamental natural (physical) science. Attempts to keep Biology autonomous because it is holistic, from the physical sciences, are just disguised anthropocentrism. Physical sciences have holistic features also. The autonomy of Biology is at odds with a holistic, integrated, science and is preventing progress in science. For example, every cell needs a 'global' communication system to keep order and stability with rapid information transfer across cellular scales. We have yet to figure out how this is achieved. Over the last 30 years, …

Absorption Coefficient Dependent Non-Linear Properties Of Thin Film Luminescent Solar Concentrators, S. Chandra, M. Rafiee, John Doran, S. J. Mccormack

Articles

This research article studied absorption coefficient dependent losses and efficiency of thin film luminescent solar concentrator (LSC). The optimum absorption coefficient was determined by fabricating red dye doped thin film LSCs with varying absorption coefficients of 24–202 cm-1. The optical, electrical, and ray-trace model predicted results were compared to establish the optimum absorption coefficient for fabricated thin film LSCs. The optical and electrical efficiencies of thin film LSCs are a function of absorption coefficient; follow linearly at lower values, gradually becoming non- linear at higher values of absorption coefficient which restricts the overall efficiency. The multi layered ray–trace model predicted …

Optical Whispering Gallery Mode Cylindrical Micro-Resonator Devices For Sensing Applications, Vishnu Kavungal

Doctoral

Whispering gallery mode (WGM) micro-resonators are devices attractive for many practical applications including optical sensing, micro-lasers, optical switches, tunable filters and many others. Their popularity is due to the high Q-factors and the exceptional sensitivity of their optical properties to the resonator’s size, refractive index as well the properties of the surrounding medium. The main focus of this thesis is on the cylindrical WGM micro-resonators due to the simplicity of their fabrication and light coupling that they offer in comparison with other WGM devices. At first, an in-depth experimental investigation of the WGM effect in different types of cylindrical micro-resonators …

Common Data Set, 2017-2018, Planning, Research, And Policy Analysis

Common Data Set (2001-present)

Common Data Set 2017-2018 for Illinois State University

Characterizing The Metabolic Intensity And Cardiovascular Demands Of Walking Football In Southeast Asian Women, D. P. Heil, Robert U. Newton, Dee Dee Ayra Salle

Research outputs 2014 to 2021

Given that the recent rise in obesity rates throughout Southeast Asia is disproportionately driven by women, part of the regional solution may be to encourage more habitual physical activity within this population. Taking advantage of the regional popularity of walking football, this study sought to characterize the cardiovascular demands and metabolic intensity of Southeast Asian women competing in walking football matches to determine the sports’ suitability for promoting physical health. It was hypothesized that both cardiovascular and metabolic intensity measures (≥65% HR% and ≥3.0 METs, respectively) would meet or exceed established thresholds for improving fitness and health. Methods: Women’s teams …

Some New And Generalized Distributions Via Exponentiation, Gamma And Marshall-Olkin Generators With Applications, Hameed Abiodun Jimoh

College of Graduate Studies: Theses & Dissertations

Three new generalized distributions developed via completing risk, gamma generator, Marshall-Olkin generator and exponentiation techniques are proposed and studied. Structural properties including quantile functions, hazard rate functions, moment, conditional moments, mean deviations, R\'enyi entropy, distribution of order statistics and maximum likelihood estimates are presented. Monte Carlo simulation is employed to examine the performance of the proposed distributions. Applications of the generalized distributions to real lifetime data are presented to illustrate the usefulness of the models.

Eagle Educator, Georgia Southern University

College of Education: News & Publications (2003-2023)

• Changes in the College of Education
• Join Bruce Field ...
• Synovus Lends EAGLE Academy More Than Just Financial Assistance
• Institute hosts several opportunities for regional involvement
• School Psychology Program Receives NASP Approval
• Year-Long Field Placement Offers New Benefits To Student Teachers
• Educator Brings Federal-Level Training to Statesboro-Bulloch County Law Enforcement
• Faculty Awards, Honors and Promotions
• Fox Receives 2017 COE Staff Award
• Two COE Faculty Named University Excellence Award Recipients
• Four Faculty Members Recognized for Jack Miller Awards
• Georgia Southern and Synovus recognize educators during football season
• Cartee Honored as College of Education Alumna of the Year
• Student Veteran Finds Second …

Cosm News, Georgia Southern University

College of Science & Mathematics: News & Publications (2012-2022)

• COSM
• News from the Biology Department
• News from Chemistry & Biochemistry
• News from Geology & Geography
• News from Mathematical Sciences Department
• News from Physics & Astronomy Department
• Get to Know Your Dean-Featuring Dr. Delana Gajdosik- Nivens
• News You Can Use

Terrestrial Lidar Raw Dataset For: Stemflow Dynamics In Relation To Individual Tree Canopy Structure, Neighborhood Conditions, And Meteorological Factors, Sandra A. Yankine, John T. Van Stan Ii, Jean-Francois Cote, Anke Hildebrandt, Dylan C. Mesta, Gustavo O. Maldonado, Jan Friesen

Datasets

These are raw 3-D (x,y,z) point files of a forest plot. Scans were collected at Herty Pines in Statesboro, Georgia, USA. Scans were collected using a Leica ScanStation C-10. Files were co-registered using Leica Cyclone II. Although file extension is ".pts" these are in ASCII format.

A Multicultural Education Praxis: Integrating Past And Present, Living Theories, And Practice, Peggy A. Shannon-Baker

Curriculum, Foundations & Reading: Faculty Publications

In our current climate of heightened conservatism and criticism, multicultural education is as important as ever. This article argues for the need to reframe multicultural education as a praxis based on its social justice- oriented principles, values, and practices. Using practitioner action research, I examine my implementation of such a praxis in a college course. I discuss critical reflections on demonstrating the interconnections between current and historical social movements, theory and lived experiences, and the students’ and my learning. I conclude by arguing that reframing multicultural education as a praxis could encourage more coalitions within and beyond schools.

2018 Georgia Southern University Men's Soccer Media Guide, Georgia Southern University

Men's Soccer Records

• Media Guide 2018 Men's Soccer

2018 Georgia Southern University Men's Soccer Roster, Georgia Southern University

Men's Soccer Records

• Georgia Southern University Athletics 2018 Men's Soccer Roster

2018 Georgia Southern University Softball Media Guide, Georgia Southern University

Women's Softball Records

• Georgia Southern 2018 Softball Media Guide

Temporal Changes In Submarine Groundwater Discharge In A Georgia Salt Marsh, Tanner C. Avery, Jacque L. Kelly

Earth, Environment & Sustainability: Faculty Presentations (1988-2022)

No abstract provided.

Pico Grid-Smart Home Energy Management System, Kristina Istre, James E. Conaway Mr.

ENgaging Educators in Renewable enerGY (ENERGY): Lesson Plans & Slideshows (2017-2019)

No abstract provided.

Solar Tracking Sustainable Energy Education, Tara Hart, Donita Legonas

ENgaging Educators in Renewable enerGY (ENERGY): Lesson Plans & Slideshows (2017-2019)

Two middle school science teachers collaborated with Georgia Southern lab students to conduct research and experimentation on the benefits of utilizing a dual-axis solar tracking system to assess the amount of voltage received during various times of the day. A smaller similar dual-axis solar tracking system was designed and fabricated to utilize in the teachers’ middle school classrooms in the study of renewable energy and the engineering and design process.

Grey Wolf Optimization-Based Optimum Energy-Management And Battery-Sizing Method For Grid-Connected Microgrids, Kutaiba Sabah Nimma, Monaaf D. A. Al-Falahi, Hung Duc Nguyen, S. D. G. Jayasinghe, Thair Mahmoud, Michael Negnevitsky

Research outputs 2014 to 2021

In the revolution of green energy development, microgrids with renewable energy sources such as solar, wind and fuel cells are becoming a popular and effective way of controlling and managing these sources. On the other hand, owing to the intermittency and wide range of dynamic responses of renewable energy sources, battery energy-storage systems have become an integral feature of microgrids. Intelligent energy management and battery sizing are essential requirements in the microgrids to ensure the optimal use of the renewable sources and reduce conventional fuel utilization in such complex systems. This paper presents a novel approach to meet these requirements …

Ontologies And The Semantic Web For Digital Investigation Tool Selection, Hayden Wimmer, Lei Chen, Tom Narock

Computing: Faculty Publications

The nascent field of digital forensics is heavily influenced by practice. Much digital forensics research involves the use, evaluation, and categorization of the multitude of tools available to researchers and practitioners. As technology evolves at an increasingly rapid pace, the digital forensics field must constantly adapt by creating and evaluating new tools and techniques to perform forensic analysis on many disparate systems such as desktops, notebook computers, mobile devices, cloud, and personal wearable sensor devices, among many others. While researchers have attempted to use ontologies to classify the digital forensics domain on various dimensions, no ontology of digital forensic tools …

The Cosm Corner, Georgia Southern University

College of Science & Mathematics: News & Publications (2012-2022)

• News from the Biology Department
• News from Chemistry & Biochemistry
• News from Geology & Geography
• News from the Mathematical Sciences Department
• News from the Physics & Astronomy Department
• Get to Know Your Dean- Featuring Dr. Delana Gajdosik- Nivens
• News You Can Use

2018 Spring Commencement, Georgia Southern University

Commencement Programs

No abstract provided.

Mixed-Criticality Real-Time Task Scheduling With Graceful Degradation, Samsil Arefin

Masters Theses

”The mixed-criticality real-time systems implement functionalities of different degrees of importance (or criticalities) upon a shared platform. In traditional mixed-criticality systems, under a hi mode switch, no guaranteed service is provided to lo-criticality tasks. After a mode switch, only hi-criticality tasks are considered for execution while no guarantee is made to the lo-criticality tasks. However, with careful optimistic design, a certain degree of service guarantee can be provided to lo-criticality tasks upon a mode switch. This concept is broadly known as graceful degradation. Guaranteed graceful degradation provides a better quality of service as well as it utilizes the system resource …

Design Of A Multifunctional Sample Probe For Transport Measurements, Mustafa Öztürk, Numan Akdoğan

Turkish Journal of Physics

Herein, we describe a multifunctional sample probe equipped with a two-axis goniometer for transport measurements. The two-axis goniometer enables both computer-controlled 360$^{\circ}$ out-of-plane and manual 360$^{\circ}$ in-plane rotations. The multifunctional sample probe was successfully implemented to a host dewar and an electromagnet system. The developed probe is capable of performing transport measurements while fully controlling the parameters such as the magnetic and electrical fields, the angle, the temperature, and the current/voltage parameters in a wide range. The design of the multifunctional sample probe allows easy installation into different dewar and magnet systems and connection of a wide range of external …

Permanent Magnet Motion In A Copper Tube, Jaroslav Franek, Martin Soka

Turkish Journal of Physics

This paper deals with the investigation of braking forces induced by eddy currents, which have effects on the permanent magnet moving at a constant speed in the direction of the conductive tube axis. The analysis is based on calculation of an action of a force between the current density, representing the magnet, and the eddy currents. The chosen solution is based on classical electrodynamics and can serve as a guide for the calculation of other cases, where braking forces are created between the moving cell, which is a source of the magnetic field, and a close conductive subject. The obtained …

Control Of Laser-Induced Nonadiabatic Molecular Alignment In Dissipative Media, Gamze Kaya

Turkish Journal of Physics

Laser-induced nonadiabatic alignment in nitrogen and mixtures of nitrogen with Ar gas was investigated using the ultrafast optical Kerr effect in the collinear pump-probe setup. We find that dissipative media produce desired alignment characteristics in distinct manners to decoherence and to population relaxation. The results show that the intense laser alignment can be used as a control tool of molecular dynamics in dissipative environments.

Quantum Many-Body Interactions In The Presence Of Disordered Potentials, Riza Oğul

Turkish Journal of Physics

The time evolution of the quantum nonequilibrium states of many-body particles is described with a set of hierarchies of quantum kinetic equations with quantum wave functions. A collision term is obtained in terms of two-body interactions in the mean-field with a disordered potential, which is proposed for the first time. The implications and the limits of applicability of the resulting kinetic equations are discussed.

Thermodynamics Of Cosmological Models With Generalized $G$ And $\Lambda $, M Saratchandra Singh, Sanasam Surendra Singh

Turkish Journal of Physics

Here we investigate spatially flat Friedmann-Robertson-Walker space-time models of the universe to study the thermodynamic behaviors in light of variables $G$ and $\Lambda $. A particular method to find the solutions of Einstein's field equations and mathematical expressions for temperature and entropy of the perfect fluid cosmological models is introduced by using both the equation of state and the assumption $G=G_{0} \,a^{n}$. It is observed that the phantom field of ($\omega

Silicon Nitride As Antireflection Coating To Enhance The Conversion Efficiency Of Silicon Solar Cells, Rajinder Sharma

Turkish Journal of Physics

The aim of this work is to investigate the effect of single and double layer antireflection coating (ARC) on the performance of silicon solar cells. In this regard, various previous works on single and double layer ARCs have been consulted. Silicon nitride (Si3N4) has been used as ARC material because of its varying refractive index (1.8-3.0). Numerical calculations have been performed to obtain the reflectance for single and double layer Si3N4 using the transfer matrix method. Double layer antireflection coating (DLARC) of Si3N4 is found to have significant advantages over single layer antireflection coating (SLARC). Calculated reflectances have been further …

An Experimental Study On The Angular Dependence Of Coherent To Compton Scattering Differential Cross-Section Ratios Of Calcium, Tuba Akkuş

Turkish Journal of Physics

The coherent to Compton scattering cross-section ratio of calcium was measured experimentally for several polar scattering angles (90°, 100°, 110°, 120°, and 130°) and azimuthal scattering angles (30°, 20°, 10°, 0°, -10°, and -20°). A high purity germanium semiconductor detector with a resolution of 199.6 eV at 5.9 keV was used. The theoretical values of the coherent to Compton scattering differential cross-section of calcium were calculated on the basis of nonrelativistic form factors, relativistic form factors, and S-matrix theories. It was observed that the experimental results were most compatible with the nonrelativistic form factor theory.

Size Investigation Of Silicon Nanoclusters Deposited On Hopg Using Noncontact Atomic Force Microscopy, Mümi̇n Mehmet Koç

Turkish Journal of Physics

The sizes of silicon nanoparticles produced using two different novel methods are investigated in this report. The method of production used to generate silicon oxide nanoparticles was achieved via gas aggregation codeposition with water on a cold target, and also via a liquid jet method. The nanoparticles were drop-cast on a highly oriented pyrolytic graphite (HOPG) substrate and assessed using ultrahigh vacuum atomic force microscopy (AFM). Noncontact constant force mode was used in the AFM investigations. The silicon nanoparticles produced using the gas aggregation and water codeposition method were found to be smaller than 2 nm. A degree of deviation …