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Now showing items 1654-1673 of 9119
Descriptions and Phylogenetic Relationships of the Guiana Shield Pencil Catfishes
(2022-07-21)
The systematics of the catfish genus Trichomycterus Valenciennes 1832 are complicated and unresolved. This genus is paraphyletic, containing all members of the Trichomycterinae that cannot be adequately placed into an ...
A Descriptive Case Study of Rural Turnaround Superintendents: What Matters Most in Sustaining Turnaround?
(2017-12-01)
This descriptive qualitative case study examined how rural superintendents implement the eight turnaround principles to foster and sustain improvement in the school district organization. The eight turnaround principles ...
A Descriptive Study of Dual Enrollment in Alabama
(2018-12-19)
The purpose of this study was to investigate the status of the Dual Enrollment Program in the State of Alabama. Dual enrollment programs allow high school students to enroll in college courses for college credit prior to ...
A Descriptive Study of the Relationship between Graduation Rates, Amounts of Financial Aid, and Tuition Cost for Student Athletes in Higher Education
(2019-12-09)
The purpose of this study was to examine the graduation success rates, amounts of
financial aid, and tuition costs for student athletes in higher education. This study sought to
determine whether financial scholarships ...
Desegregation at Auburn University: A Historical Look at the Uses of Media
(2005-08-15)
This thesis examines desegregation at Auburn University, focusing on the role of the media. Why is the desegregation of Auburn University less well known than other southern schools and what role, if any, did the media ...
Desiccation Cracking Behavior of Sustainable and Environmentally Friendly Reinforced Cohesive Soils
(2020-04-17)
Desiccation cracking of cohesive soils is the development of cracks on the soil surface as a result of a reduction in soil water content. The decrease in soil surface area owing to the desiccation of cohesive soils has an ...
Design & Construction Planning of Rapid Bridge Deck Replacement Systems for I-59 Bridges at Collinsville, AL
(2011-12-13)
Many bridges in the Birmingham area have deteriorated decks that need to be rehabilitated or replaced. Several of these are major interstate bridges that carry large volumes of traffic. Rehabilitation or replacement of the ...
Design and Analysis of Acoustic Metamaterials in Order to Isolate Microelectromechanical Systems Devices from High Frequency Acoustic Noise
(2021-07-30)
The effects of high frequency acoustic noise can be rather damaging to Microelectromechanical Systems (MEMS) devices. The use of MEMS devices is widespread; therefore, some operational environments for MEMS devices can ...
Design and Analysis of Air and Coolant Control for a Polymer Electrolyte Membrane Fuel Cell
(2007-08-15)
The polymer electrolyte membrane (PEM) fuel cell is an alternative engine that can potentially replace the internal combustion engine in the vehicles of the future. When hydrogen, stored in a tank, and oxygen, from the ...
Design and Analysis of Joining Methods for Open Architecture Composite Structures
(2016-03-25)
Recent research has shown that ¬Open-Architecture Composite Structures (O-ACS or simply Open Structures) can be utilized to create structures with characteristics that traditional composite structures cannot achieve. The ...
Design and Analysis of Low-Cost X-Ray Imaging System Incorporating Add-On Mouse Rotation System in Pre-Clinical Research
(2022-07-21)
Computed tomography (CT) has become an essential tool in diagnostic and sports medicine. It is able to generate a three-dimensional rendering that can be used to interrogate a given region or desired structure from any ...
Design and Analysis of Optimal Braided Composite Lattice Structures
(2014-07-11)
This work applies to structural optimization within geometric constraints of braided truss structures. Prototypes of the newly developed open-structures have proven useful for their high specific stiffness and rapid ...
Design and Analysis of Woven Shape Memory Alloy Fabric
(2018-11-27)
Shape Memory Alloys (SMA) are smart materials that can memorize a shape and return to that shape after deformation upon the application of stress or heat. The most commonly used SMA is Nitinol (NiTi) which consists of ...
Design and Calibration of Stress Sensors on 4H-SiC
(2022-03-07)
Stresses in electronic packages due to thermal and mechanical loadings can cause premature mechanical failures such as fracture of die, severing of connections, die bond failure, solder fatigue, and encapsulant cracking. ...
Design and Characterization of a Novel Filling Yarn Insertion System for Weaving Machines
(2012-04-11)
Weaving is a textile manufacturing process in which weft yarns are inserted by machines through a gap in the warp yarns called a shed to form a woven fabric through interlacing. The filling insertion systems that are ...
Design and Characterization of Cold Recycled Foamed Asphalt Mixtures with High RAP Contents
(2018-04-24)
Cold recycling with foamed asphalt has been considered as a sustainable pavement rehabilitation technology. Although different mix design methods have been proposed, there is no widely accepted standard. The effects of ...
Design and Characterization of Nonwoven Fabrics for Gas Diffusion Layer in Polymer Electrolyte Membrane Fuel Cell
(2007-05-15)
The aim of this research is to develop and evaluate materials for polymer electrolyte membrane fuel cells. Gas diffusion layer (GDL) is a part of membrane electrode assembly (MEA) that is the locomotive of polymer electrolyte ...
Design and Construction of a Mach 2 Wind Tunnel For Cavity Acoustics Research
(2013-04-17)
Cavity flow is encountered in many practical applications of ground and air vehicles operating at high speed. Examples include airflow past open windows, sunroofs, and wheel-wells of automobiles as well as landing gear and ...
Design and Construction of a Rainfall Simulator for Large-Scale Testing of Erosion Control Practices and Products
(2017-04-14)
Soil erosion and the resulting sediment deposition constitutes one of the greatest pollutants in our nation’s waterways. Construction projects often generate large areas of exposed soil that remain disturbed throughout the ...
Design and Construction of Carbon NanoTubes (CNTs) Triggered Pseudospark Switch
(2012-05-07)
Pseudospark switches have been used as fast closing switches in pulsed power systems. Advantages include high hold off voltage of 10s kV, high conduction current of ~104 A, fast current rise time of 1011 A/s, low delay and ...