Digital Commons Network^™

Physical Education Major's Knowledge Of Appropriate Instructional Practices In Middle School Physical Education, David C. Barney, Robert Christenson, Frank Pleban

Faculty Publications

For many years students have been exposed to inappropriate instructional practices in physical education, resulting in bad experiences and inadequate learning. Introducing pre service physical education (PE) majors to Appropriate Instructional Practices (AIP) is a recommended method of preparation. Unfortunately, many PE majors have been exposed to inappropriate instructional practice; thus they perceive those practices as appropriate to use in their teaching. To determine PE majors' understanding of AIP, 313 PE majors (161 males & 152 females) from 7 different institutions participated in this study. Based on incorrect responses it was found that PE majors believed that organizing students in …

Looking Inward: Domestic Policy For Climate Change Refugees In The United States And Beyond, Carey Degenaro

University of Colorado Law Review

No abstract provided.

Why Women Don’T Run: Experimental Evidence On Gender Differences In Political Competition Aversion, Jessica Preece, Olga B. Stoddard

Faculty Publications

Women's underrepresentation in leadership positions has been well documented, but the reasons behind it are not well understood. We carry out a field experiment to test a prominent theory about the source of the gender gap in leadership ambition: women's higher aversion to competitive environments. Using politics as a context for our study, we employ two distinct subject pools – highly politically active individuals and workers from an online labor market. We find that priming individuals to consider the competitive nature of politics has a strong negative effect on women's interest in political office, but not on men's interest, hence …

Mode-Multiplexed Transmission Over Conventional Graded-Index Multimode Fibers, Roland Ryf, Nicolas K. Fontaine, H. Chen, B. Guan, B. Huang, Mina Esmaeelpour

Electrical and Computer Engineering Faculty Research & Creative Works

We present experimental results for combined mode-multiplexed and wavelength multiplexed transmission over conventional graded-index multimode fibers. We use mode-selective photonic lanterns as mode couplers to precisely excite a subset of the modes of the multimode fiber and additionally to compensate for the differential group delay between the excited modes. Spatial mode filters are added to suppress undesired higher order modes. We transmit 30-Gbaud QPSK signals over 60 WDM channels, 3 spatial modes, and 2 polarizations, reaching a distance of 310 km based on a 44.3 km long span. We also report about transmission experiments over 6 spatial modes for a …

Eagle Executive Magazine, Georgia Southern University

College of Business: News & Publications

• Fall commencement
• An economic perspective
• Students and Alumni
• "Practice Makes Perfect"
• Entrepreneur Spotlight: Tina Banks

Restoring Community Dignity Following Police Misconduct Reforming The Criminal Injustice System: Essay, John Felipe Acevedo

Essays, Reviews, and Shorter Works

No abstract provided.

Polygamy After Windsor: What's Religion Got To Do With It General Essays, Casey E. Faucon

Essays, Reviews, and Shorter Works

No abstract provided.

A Shear-Based Parameterization Of Turbulent Mixing In The Stable Atmospheric Boundary Layer, Jordan M. Wilson, Subhas K. Venayagamoorthy

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In this study, shear-based parameterizations of turbulent mixing in the stable atmospheric boundary layer (SABL) are proposed. A relevant length-scale estimate for the mixing length LM of the turbulent momentum field is constructed from the turbulent kinetic energy Ek and the mean shear rate S as. Using observational data from two field campaigns-the Surface Heat Budget of the Arctic Ocean (SHEBA) experiment and the 1999 Cooperative Atmosphere-Surface Exchange Study (CASES-99)- is shown to have a strong correlation with LM. The relationship between LM and corresponds to the ratio of the magnitude of the tangential components of the turbulent momentum flux …

Hydraulic Design Of Baffles In Disinfection Contact Tanks, Zachary H. Taylor, Jeremy S. Carlston, Subhas Karan Venayagamoorthy

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This study focuses on understanding the hydraulic design of baffled contact tanks using computational fluid dynamics simulations. In particular, we address the key question: for a given footprint of a rectangular tank with a specified inlet width (Winlet), how does the hydraulic efficiency of a baffled tank depend on the configuration of internal baffles? In an effort to address this question, a carefully conceived parametric study consisting of 30 high-resolution two-dimensional (planar) simulations was conducted to quantify the hydraulic efficiency of a laboratory scale tank as a function of dimensional relationships between key baffle design dimensions (baffle opening length Lbo, …

Comparisons Of Horizontal-Axis Wind Turbine Wake Interaction Models, Jordan M. Wilson, Cole J. Davis, Subhas K. Venayagamoorthy, Paul R. Heyliger

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In this study, Reynolds-averaged Navier-Stokes (RANS) simulations are performed using the k-ϵ and k-ω shear stress transport (SST) turbulence closure schemes to investigate the interactions of horizontal-axis wind turbine (HAWT) models in the neutrally stratified atmospheric boundary layer (ABL). A comparative study of actuator disk, actuator line, and full rotor models of the National Renewable Energy Laboratory (NREL) 5 MW reference turbine is presented. The open-source computational fluid dynamics (CFD) code open foam 2.1.0 and the commercial software ANSYS fluent 13.0 are used for simulations. Single turbine models are analyzed for turbulent structures and wake resolution in the downstream region. …

Biases In Thorpe-Scale Estimates Of Turbulence Dissipation. Part I: Assessments From Large-Scale Overturns In Oceanographic Data, Benjamin D. Mater, Subhas K. Venayagamoorthy, Louis St Laurent, James N. Moum

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Oceanic density overturns are commonly used to parameterize the dissipation rate of turbulent kinetic energy. This method assumes a linear scaling between the Thorpe length scale LT and the Ozmidov length scale LO. Historic evidence supporting LTLO has been shown for relatively weak shear-driven turbulence of the thermocline; however, little support for the method exists in regions of turbulence driven by the convective collapse of topographically influenced overturns that are large by open-ocean standards. This study presents a direct comparison of LT and LO, using vertical profiles of temperature and microstructure shear collected in the Luzon Strait-a site characterized by …

The Formation And Fate Of Internal Waves In The South China Sea, Matthew H. Alford, Thomas Peacock, Jennifer A. Mackinnon, Jonathan D. Nash, Maarten C. Buijsman, Luca A. Centurioni, Shenn-Yu Chao, Ming-Huei Chang, David M. Farmer, Oliver B. Fringer, Ke-Hsien Fu, Patrick C. Gallacher, Hans C. Graber, Karl R. Helfrich, Steven M. Jachec, Christopher R. Jackson, Jody M. Klymak, Dong S. Ko, Sen Jan, T. M. Shaun Johnson, Sonya Legg, I-Huan Lee, Ren-Chih Lien, Matthew J. Mercier, James N. Mourn, Ruth Musgrave, Jae-Hun Park, Andrew I. Pickering, Robert Pinkel, Luc Rainville, Steven R. Ramp, Daniel L. Rudnick, Sutanu Sarkar, Alberto Scotti, Harper L. Simmons, Louis C. St. Laurent, Subhas Karan Venayagamoorthy, Yu-Huai Wang, Joe Wang, Ying J. Yang, Theresa Paluszkiewicz, Tswen-Yung David Tang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Internal gravity waves, the subsurface analogue of the familiar surface gravity waves that break on beaches, are ubiquitous in the ocean. Because of their strong vertical and horizontal currents, and the turbulent mixing caused by their breaking, they affect a panoply of ocean processes, such as the supply of nutrients for photosynthesis¹, sediment and pollutant transport² and acoustic transmission³; they also pose hazards for man-made structures in the ocean⁴. Generated primarily by the wind and the tides, internal waves can travel thousands of kilometers from their sources before breaking⁵, making it …

Undergraduate Catalog

Undergraduate & Graduate Catalogs

No abstract provided.

2015-2016 Graduate Catalog, Armstrong State University

Armstrong Office of the Registrar: Graduate Catalogs (Archived)

Academic catalog for Armstrong Atlantic State University.

Flexural Behavior Of High-Volume Fly Ash Concrete Beams: Experimental Study, Mahdi Arezoumandi, Carlos A. Ortega, Jeffery S. Volz

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

An experimental investigation was conducted to study both mechanical properties and the flexural strength of full-scale reinforced concrete beams constructed with both high-volume fly ash concrete-concrete with 70% of the cement replaced with fly ash-and conventional concrete (CC). The beams were tested under a simply supported four-point loading condition. The experimental cracking, yielding, and ultimate moments as well as deflection on ultimate load of the beams were compared with both the ACI 318-11 and Eurocode 2-05 provisions. Furthermore, the experimental flexural strengths of the beams were compared with both the modified compression field theory method and a flexural test database …

Evaluation Of An Improved Technique For Geosynthetic-Reinforced And Pile-Supported Embankment, Jun Zhang, Shao Wen Liu, He Fu Pu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

With a large number of applications of conventional technique for geosynthetic-reinforced and pile-supported (GRPS) embankment (called CT embankment), many deficiencies have been exposed. In view of the deficiencies, an improved technique, fixed-geosynthetic-reinforced and pile-supported embankment (called FGT embankment), is developed. To investigate the performance of the FGT embankment, the comparison analyses and parametric studies are conducted by Finite Element Method (FEM). The influencing factors investigated include elastic modulus of soil, tensile stiffness of geosynthetics, pile length, pile spacing, and pile elastic modulus. In addition, the cost evaluation for the FGT embankment and CT embankment is also made. The results show …

Development Of Composite Pcms By Incorporation Of Paraffin Into Various Building Materials, Shazim Ali Memon, Wenyu Liao, Shuqing Yang, Hongzhi Cui, Syed Farasat Ali Shah

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In this research, we focused on the development of composite phase-change materials (CPCMs) by incorporation of a paraffin through vacuum impregnation in widely used building materials (Kaolin and ground granulated blast-furnace slag (GGBS)). The composite PCMs were characterized using environmental scanning electron microscopy (ESEM), Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) techniques. Moreover, thermal performance of cement paste composite PCM panels was evaluated using a self-designed heating system. Test results showed that the maximum percentage of paraffin retained by Kaolin and GGBS was found to be 18% and 9%, respectively. FT-IR results show that …

Fundamentals Of Speech, Steelman Library, Richard C. Harris Dr.

Syllabus Repository

No abstract provided.

Astrocytes Increase Atp Exocytosis Mediated Calcium Signaling In Response To Microgroove Structures, Ajay V. Singh, Michael Raymond, Fabiano Pace, Anthony Certo, Jonathan M. Zuidema, Christopher A. Mckay, Ryan J. Gilbert, X. Lucas Lu, Leo Q. Wan

Chemical and Biochemical Engineering Faculty Research & Creative Works

Following central nervous system (CNS) injury, activated astrocytes form glial scars, which inhibit axonal regeneration, leading to long-term functional deficits. Engineered nanoscale scaffolds guide cell growth and enhance regeneration within models of spinal cord injury. However, the effects of micro-/nano size scaffolds on astrocyte function are not well characterized. In this study, a high throughput (HTP) microscale platform was developed to study astrocyte cell behavior on micropatterned surfaces containing 11/4m spacing grooves with a depth of 250 or 500â €...nm. Significant changes in cell and nuclear elongation and alignment on patterned surfaces were observed, compared to on flat surfaces. The …

Sensing Performance Study Of Sic, A Wide Bandgap Semiconductor Material Platform For Surface Plasmon Resonance Sensor, Wei Du, Feng Zhao

Electrical and Computer Engineering Faculty Research & Creative Works

The sensing properties of a surface plasmon resonance (SPR) based waveguide sensor on a wide bandgap semiconductor, silicon carbide (SiC), were studied. Compared to other waveguide sensors, the large bandgap energy of SiC material allows the sensor to operate in the visible and near infrared wavelength range, while the SPR effect by a thin gold film is expected to improve the sensitivity. The confinement factor of the sensor at various wavelengths of the incident light and refractive index of the analyte were investigated using an effective index method. Since the change of analyte type and concentration is reflected by the …

High-Performance Extreme Learning Machines: A Complete Toolbox For Big Data Applications, Anton Akusok, Kaj Mikael Bjork, Yoan Miche, Amaury Lendasse

Engineering Management and Systems Engineering Faculty Research & Creative Works

This Paper Presents a Complete Approach to a Successful Utilization of a High-Performance Extreme Learning Machines (Elms) Toolbox for Big Data. It Summarizes Recent Advantages in Algorithmic Performance; Gives a Fresh View on the Elm Solution in Relation to the Traditional Linear Algebraic Performance; and Reaps the Latest Software and Hardware Performance Achievements. the Results Are Applicable to a Wide Range of Machine Learning Problems and Thus Provide a Solid Ground for Tackling Numerous Big Data Challenges. the Included Toolbox is Targeted at Enabling the Full Potential of Elms to the Widest Range of Users.

Efficient Skin Segmentation Via Neural Networks: Hp-Elm And Bd-Som, C. Swaney, A. Akusok, K. M. Björk, Y. Miche, Amaury Lendasse

Engineering Management and Systems Engineering Faculty Research & Creative Works

This Paper Presents Two Novel Methods for Skin Detection: Hp-Elm and Bd-Som. Both Som and Elm Are Fast for Large Data Sets, But Not Yet Suitable for Big Data. We Show How They Can Be Improved in Order to Fulfill the Strict Requirements for Big Data. Both New Methods Are Described and their Implementations Are Explained. a Comparison on a Large Example is Presented in the Experiment Section. We Find that Bd-Som is More Accurate but Not as Computationally Efficient as Hp-Elm. as a Result, We Show that Both Methods Work Well on a Big Data Task. the Given Task …

Extreme Learning Machine On High Dimensional And Large Data Applications, Zhiping Lin, Jiuwen Cao, Tao Chen, Yi Jin, Zhan Li Sun, Amaury Lendasse

Engineering Management and Systems Engineering Faculty Research & Creative Works

No abstract provided.

Particle Swarm Optimization Based Selective Ensemble Of Online Sequential Extreme Learning Machine, Yang Liu, Bo He, Diya Dong, Yue Shen, Tianhong Yan, Rui Nian, Amaury Lendasse

Engineering Management and Systems Engineering Faculty Research & Creative Works

A Novel Particle Swarm Optimization based Selective Ensemble (PSOSEN) of Online Sequential Extreme Learning Machine (OS-ELM) is Proposed. It is based on the Original OS-ELM with an Adaptive Selective Ensemble Framework. Two Novel Insights Are Proposed in This Paper. First, a Novel Selective Ensemble Algorithm Referred to as Particle Swarm Optimization Selective Ensemble is Proposed, noting that PSOSEN is a General Selective Ensemble Method Which is Applicable to Any Learning Algorithms, Including Batch Learning and Online Learning. Second, an Adaptive Selective Ensemble Framework for Online Learning is Designed to Balance the Accuracy and Speed of the Algorithm. Experiments for Both …

Assessment Of Phonological And Orthographic Differences In Adults With Reading Disabilities, Christina P. Hyers Mrs.

College of Graduate Studies: Theses & Dissertations

There is debate surrounding how to effectively identify and distinguish reading disabilities from other deficits in college populations. Although several theories have proposed a positive relationship between nonword decoding weaknesses and higher intelligence levels, currently there is no conclusive evidence supporting these claims. The primary purpose of the current study was to determine if individuals of diverging levels of verbal intellectual functioning display profile differences with regard to accuracy for spelling and single word reading of regular words and nonwords. Identifying the specific deficits displayed in populations with reading disabilities assists in formulating interventions targeted at areas of weakness and …

The Obama Effect On African American High School Males, Aundra Simmons Vaughn

College of Graduate Studies: Theses & Dissertations

“Of all the challenges in education today, I can think of none greater than the challenge of motivating, educating, and empowering black male learners” (Kafele, 2012, p. 67). Research documents the struggles of African American males in society and education. There is concern among educators for role models for young people to emulate (Lines, 2001). To explore President Obama as a role model and the impact of his historic election on African American recent high school male graduates, a qualitative research study was used. A phenomenological design helped described the “essence” of the phenomenon— the election of an African American …

Principal Instructional Leadership In Ga High Poverty Elementary Schools, Ginger W. Spires

College of Graduate Studies: Theses & Dissertations

The purpose of this quantitative study was to investigate teachers’ perceptions of principal instructional leadership practices in Georgia Reward Highest Performing and Georgia Reward Highest Progress elementary schools. As such, this causal-comparative study identified the frequency of principal instructional leadership practices and attempted to determine if these practices can be related to school effectiveness in high poverty schools. The sample of this study consisted of Georgia classroom teachers in high poverty elementary schools, specifically in the categories of Georgia Reward Highest Performing and Georgia Reward Highest Progress elementary schools. Hallinger’s (1983) Principal Instructional Management Rating Scale (PIMRS) was utilized to …

"What Are You?" Sharing The Biracial/Multiracial College Student Experience, Kelly Brophy

College of Graduate Studies: Theses & Dissertations

This study explored the ways in which biracial/multiracial students experience race on a college campus and beyond. Twelve semi-structured, in-depth interviews were conducted with students during the spring of 2015 at a Southeastern University. This study focuses on how participants negotiate being racialized by others because of physical appearances and how racial ambiguity (i.e., shifting from one race category to another) is experienced. The research questions used were broad and geared toward identity development and social environment which included experiences at school and with family. Thematic analysis was used with inductive coding (Braun & Clarke, 2006). The constant comparative method …

A Test Score Comparison Between Block And Traditional Scheduling, Yancy J. Ford

College of Graduate Studies: Theses & Dissertations

The purpose of this study was to examine how schools utilizing block scheduling and traditional scheduling models differ in achievement levels on the five Georgia End-of-Course Exams (EOCT) and the Georgia High School Graduation Writing test (GHSWT) at two high schools in ruralSouth Georgia. The researcher will investigated if there is a differential benefit in terms of higher EOCT/GHSWT scores during block or traditional scheduling when considering demographic variables student gender, race, or SES. No experimentation occurred as the study relied on historical data. Both high schools were examined individually; comparing the five EOCT’s and the GHSWT under the block …

Perception Of The School Experiences Of Five Generations Of Deaf Students, Charles Depew

College of Graduate Studies: Theses & Dissertations

The purpose of this study was to investigate deaf participants’ perspectives of their educational experiences within the last 50 years. The study was comprised of five deaf participants educated in the public school setting, and four deaf participants educated in the residential setting. The qualitative study utilized three in-depth interviews, a survey, and the researcher’s reflections/notes. The findings suggest deaf students’ educational experiences are impacted by low academic expectations. Sign language can be a powerful learning tool or a barrier for deaf students as deaf students depend on sign language and visuals to support their learning. Both spoken and written …