Digital Commons Network^™

Clarifying Costs Can Increased Price Transparency Reduce Healthcare Spending?, Jaime S. King, Morgan A. Muir, Stephanie A. Alessi

Faculty Scholarship

No abstract provided.

Calliope, Armstrong Atlantic State University

Calliope Magazine

Volume 29

2013-2014 Graduate Catalog, Armstrong Atlantic State University

Armstrong Office of the Registrar: Graduate Catalogs (Archived)

Academic catalog for Armstrong Atlantic State University.

Effect Of Fly Ash On The Shear Strength Of Concrete Beams Without Shear Reinforcement, Mahdi Arezoumandi, Jeffery S. Volz, Carlos A. Ortega

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The following paper presents the results of an experimental investigation of the shear strength of full-scale reinforced concrete beams constructed with both high-volume fly ash concrete (HVFAC)-concrete with at least 50% of the cement replaced with fly ash-and conventional concrete (CC). This study includes two HVFAC mixes and one CC mix. The two HVFAC mixes are identical except for the amount of Class C fly ash replacement of cement, with one mix replacing 50% of the cement with fly ash and the other replacing 70 %. The test matrix included 18 beams-six for each concrete type-with three different longitudinal reinforcement …

2013-2014 Undergraduate Catalog, Armstrong Atlantic State University

Armstrong Office of the Registrar: Undergraduate Catalogs (Archived)

Academic catalog for Armstrong Atlantic State University.

Effect Of High-Volume Fly Ash On Shear Strength Of Concrete Beams, Mahdi Arezoumandi, Jeffery Volz, John Myers

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Every year concrete production exceeds 6.5 billion tons worldwide, nearly 1 ton for every man, woman, and child on the planet. In fact, concrete is used 10 times more than any other building material in the world, primarily because of its incredible versatility, availability, and relatively low cost. Unfortunately, the production of Portland cement - the key ingredient in concrete - generates approximately a pound of carbon dioxide for every pound of cement produced. One method of reducing concrete's carbon footprint is to replace a significant amount of the cement with fly ash, a by-product of coal-burning thermal power stations. …

Biol 4903: Senior Capstone, Steelman Library, Jerm J. Day-Storms Dr.

Syllabus Repository

No abstract provided.

Fundamentals Of Speech, Steelman Library, David Yates

Syllabus Repository

No abstract provided.

Fundamentals Of Speech, Steelman Library, David Yates

Syllabus Repository

No abstract provided.

Fundamentals Of Speech, Steelman Library, David Yates

Syllabus Repository

No abstract provided.

Fundamentals Of Speech, Steelman Library, David Yates

Syllabus Repository

No abstract provided.

Fundamentals Of Speech, Steelman Library, David Yates

Syllabus Repository

No abstract provided.

Western Art Appreciation, Steelman Library, Jan Hurndon

Syllabus Repository

No abstract provided.

2013 Spring Commencement, Georgia Southern University

Commencement Programs

No abstract provided.

Precocious Puberty: Pathology, Related Risks, And Support Strategies, Linda B. Synovitz, Joanne Chopak-Foss

Community Health: Faculty Publications

Children are currently starting pubertal development much earlier than 20 to 30 years ago. Data from the National Health and Nutrition Examination Survey (NHANES III) conducted from 1988-1994 revealed that the median age for breast development in white girls was approximately 9.7 years and 8 years in African-American girls versus 10.9 years ago. More recent data, however, indicate that some children are starting pubertal development even earlier (age 7 or 8 in girls or age 9 in boys). Very early pubertal development is identified as precocious puberty, a phenomenon that brings great concern to others besides parents: the child, their …

Tailoring A Physical Activity Promotion Program For A Rural Area, Gavin T. Colquitt, Moya L. Alfonso, Ashley Walker, Vanessa Dunmore

Community Health: Faculty Presentations (1993-2018)

Background/Purpose: VERBTM Summer Scorecard (VSS) has used social marketing to successfully promote physical activity for urban and suburban youth. The purpose of this study was to adapt the program to meet the needs of a minority, rural population.

Method: Qualitative marketing research methods including focus groups were used to gather data from parents (N = 12) and their children (N =12) in April 2012. A structured, open-ended focus group guide was developed specific to parents and youth and based on the social marketing framework. Marketing topics covered included Product, Price, Place and Promotion. Attention was given to testing two previously …

Advances In Blind Source Separation, Christopher Osterwise

Doctoral Dissertations

"Blind Source Separation (BSS) is a classic problem that attempts to separate unknown sources from observed mixtures. A common framework of this is the Cocktail Party problem, where multiple individuals speaking in a noisy room are recorded by a configuration of microphones, with the challenge being to split the observed signals into individual conversations. This dissertation covers the evaluation of an existing algorithm known as Cascaded ICA with Intervention Alignment (CICAIA), the establishment of a new parameter for characterizing blind mixtures, and three new algorithms, of which two are capable of separating any number of sources given more microphones than …

Behavior And Effects Of Nanoparticles In Complex Fluid Systems, Chen Wang

Doctoral Dissertations

"The development of nanoscale technologies has greatly expanded the scientific and engineering horizons and also has the potential to turn molecular discoveries into worldwide benefits on multiple fronts. Despite recent extensive efforts, the focus of nanoparticle studies has been on their synthesis and various possible derivatives. In this dissertation, molecular based modeling and simulation studies have been performed to characterize and understand the behavior, properties, and effects of nanoparticles in some important material systems. The results show that small nanoparticles that are highly faceted have significant shape effects, which are not captured by classical continuum-based approaches. When dissolved in confined …

Development Of An Integrative Commissioning Methodology For New-Building Construction, William L. Gillis Iii

Doctoral Dissertations

"Commissioning (Cx) is a quality process for building construction used to verify that the owner's project requirements (OPR) are being met by the final design, construction, and operations and maintenance. The goal is to confirm that each phase of the project is linked back to the OPR through quality assurance methods. Leadership in Energy and Environmental Design (LEED) certification is an OPR which contributes to difficulties within the design and construction (D&C) process. Though LEED certification is only part of the OPR, too often the design drifts from the OPR and simply focuses on meeting the LEED certification.

Quality function …

Integration Of Nanoporous Zeolite With Optical Fiber Devices For Chemical Sensing, Xinwei Lan

Doctoral Dissertations

"Label-free optical fiber chemical sensors have provoked significant research interest in recent years due to their unique advantages of small size, low cost, potential for distributed sensing, capability of in situ and remote operation, and tolerance to harsh environments. However, existing optical fiber chemical sensors lack the desired sensitivity and specificity for many applications such as chemical and biological analysis, industrial process control, environmental monitoring, and national security.

The dissertation summarizes our research efforts and results in functional integration of nanoporous zeolites with optical fiber devices for development of label-free optical fiber chemical sensors with high sensitivity and selectivity. Fundamental …

Modeling And Analysis Of Dynamic Behavior Of Adsorption Stratified Column Beds Packed With Partially Fractal Porous Adsorbent Particles, Min Li

Doctoral Dissertations

"In this work novel porous adsorbent media having partially fractal structures and stratified packed-beds are constructed and their dynamic performance with respect to their adsorptive capacity through the construction and solution of rigorous models is studied. The results show that conventional columns packed with partially fractal porous adsorbent particles provide larger breakthrough times and dynamic utilization of the adsorptive capacity of the column when compared with those of conventional columns employing conventional adsorbent particles which do not possess a partially fractal structure. Furthermore, stratified column beds exhibit superior species separation performance than conventional columns when they are packed with either …

Source Reconstructions For Ic Radiated Emissions Based On Magnitude-Only Near-Field Scanning, Ji Zhang

Doctoral Dissertations

"In this dissertation, a source reconstruction method is proposed to model the emission behavior of an IC by using magnitude-only information during near-field scanning. The phase-retrieval is accomplished during the back-forth iterations between two scanning planes of different heights. The magnitudes of fields on two planes of different heights are recorded and used to constrain the amplitude of the calculated fields during iterations. Three essential transformations among dipoles and fields are continued at each iteration step, until the convergence condition is achieved. The proposed algorithm has been verified by using a set of dipole-array as the original emitting sources, and …

Position Control Of Electro-Hydraulic Actuator System Using Fuzzy Logic Controller Optimized By Particle Swarm Optimization, Daniel M. Wonohadidjojo, Ganesh Kothapalli, Mohammed Hassan

Research outputs 2014 to 2021

The position control system of an electro-hydraulic actuator system (EHAS) is investigated in this paper. The EHAS is developed by taking into consideration the nonlinearities of the system: the friction and the internal leakage. A variable load that simulates a realistic load in robotic excavator is taken as the trajectory reference. A method of control strategy that is implemented by employing a fuzzy logic controller (FLC) whose parameters are optimized using particle swarm optimization (PSO) is proposed. The scaling factors of the fuzzy inference system are tuned to obtain the optimal values which yield the best system performance. The simulation …

Development And Testing Of A Survey Instrument To Assess Ethical Perceptions Of It And Is Students, Omosalewa Aderonmu, Cheryl L. Aasheim, Paige Rutner

Computing: Faculty Publications

The purpose of this research study is to design a survey instrument to determine the effectiveness of the information technology (IT) and information systems (IS) programs in teaching ethics and ethical behavior as it relates to the IT profession. As researchers and as teachers, we want to know if students learn what constitutes ethical behavior in the information technology and information system programs and understand the obligations of an information technology professional with regards to ethical behavior in the workplace. A survey was

designed as a tool to assess the effectiveness of teaching ethics in IT and IS curricula. The …