Auburn Theses and Dissertations: Recent submissions
Now showing items 6841-6860 of 9772
Development and Implementation of a Trajectory Prediction Methodology
(2012-04-16)
Operation of unmanned aircraft in the United States' National Airspace System (NAS) is currently severely restricted, primarily due to the need to ensure adequate separation between manned and unmanned aircraft (UA). A ...
UAV Collision Avoidance using A* Algorithm
(2012-04-13)
Collision avoidance is the essential requirement for unmanned aerial vehicles (UAVs) to become fully autonomous. Several algorithms have been proposed to do the path planning in a simulated environment, but only few can ...
Silvicultural Disturbances Affect on Root-feeding Bark Beetle Populations and the Incidence of Ophiostomatoid Fungal Species Contributing to Southern Pine Decline
(2012-04-12)
Root-feeding beetles and weevils are known to be vectors of ophiostomatoid fungi which contribute to Southern Pine Decline (SPD) in the southeastern United States. This study examined population changes of Hylastes spp. ...
Food Insecurity and Undiagnosed Chronic Conditions among Adults
(2012-04-12)
The purpose of this thesis is to examine the relationship between food insecurity and undiagnosed chronic conditions, including prediabetes, hypertension and hyperlipidemia, among adults (20-64y). Food security status was ...
Oddity-from-Sample Abstract-Concept Learning by Pigeons
(2012-04-11)
The ability to determine whether or not objects are the same has been established as an ability essential to human cognition (James, 1890). Concept formation, such as that of sameness, has been shown to rely on the number ...
Performance Analysis of Collision Avoidance Schemes in Ad Hoc Networks
(2012-04-11)
IEEE 802.11 DCF (Distributed Coordination Function) is a popular protocol used for
the physical and MAC layers in most ad hoc networks. DCF employs carrier sense multiple
access with collision avoidance (CSMA/CA) and a ...
Sound Attenuation Using MEMS Fabricated Acoustic Metamaterials
(2012-04-11)
Unlike traditional rotational gyroscopes, MEMS gyroscopes use a vibrating proof mass rather than a rotational mass to sense changes in angular rate. They are also smaller and less expensive than traditional gyroscopes. ...
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 ...
Evaluation of Processed Corncob and Paulownia tomentosa as Substrate Components in Horticulture Crop Production
(2012-04-11)
The main components in soilless substrates for greenhouse and nursery production include pine bark, peatmoss, and perlite. There have been recent concerns with peatmoss because of availability, and the environmental impact ...
Novel Metal-Polymer Composite with High Percolation threshold
(2012-04-11)
0-3 metal-polymer composite based on nano-size Ni particles was studied.
A nanocomposite with nano-size Ni particles embedded into copolymer poly [vinylidene fluoride-co-trifluoroethylene] P(VDF-TrFE) 70/30 ...
Aspergillus niger Control on Strawberries by Recombinant Tobacco Osmotin for Extending Shelf-life
(2012-04-11)
Osmotin, a pathogenesis-related (PR) protein, possesses antimicrobial activity. The objectives of this study were: 1) to determine the stability of the recombinant tobacco osmotin (rOSM), 2) to define the antimicrobial ...
Prosodic Characteristics Observed in Verbal Children with Autism
(2012-04-11)
Children with autism spectrum disorders (ASD) exhibit difficulties with the
suprasegmental aspects of speech production, more specifically, with prosody. However,
there is a paucity of research regarding the perception ...
Occurrence and Habitat Use of Bats in Central Alabama Forests
(2012-04-10)
Limited information is available on the relationship between characteristics of landscape and seasonal use of habitat for forest-dwelling bats in central Alabama. This study was designed to clarify these relationships and ...
Breaching of Concrete Masonry Unit Walls due to Direst Shear when Subjected to Blast Loading
(2012-04-10)
This report details the steps needed to formulate an engineering design equation to address the potential for breaching of concrete masonry walls in between grout cells when subjected to blast loading. Prior to the beginning ...
Fate and Transformation of Oils and Trace Metals in Alabama and Louisiana Coastal Marsh Sediments Associated with the British Petroleum Gulf Oil Spill
(2012-04-10)
The effects of the 2010 BP Macondo-1 well oil spill on the geochemistry of sediments and water columns at ten Gulf salt-marsh sites were investigated, months after the spill ceased. The ten sampling sites include four ...
Salt and Light Water Purification System
(2012-04-09)
The need for a proposed solution to help mitigate the world’s water crisis is presented. This need is not a new development in the 21st century, nor is the process of using electricity and chemicals to sanitize water. ...
Impact of cogongrass (Imperata cylindrica) presence and management strategies on arthropod natural enemy populations in longleaf pine stands
(2012-04-09)
Cogongrass (Imperata cylindrica Beav.) is an aggressive, invasive weed that is threatening the integrity of longleaf pine (Pinus palustris Mill.) ecosystems in southeast Alabama. Various management strategies are implemented ...
Role of water availability on fish assemblage structure: effects of agricultural land use and spawning mode
(2012-04-09)
The availability of water has been changing as human demands increase, weather patterns change, and land use is altered. This is a common trend throughout the world as well as in the tributaries of the Middle Chattahoochee ...
Non-collocated Control of an Autonomous Robot-Trailer System Using State Estimation
(2012-04-09)
In this work, the author develops an observer and non-collocated controller for a robot-trailer system in which only the position of the trailer is measured. A linearized state-space model of the system is derived using ...
The Role of the Victim-Perpetrator Relationship in the Development of PTSD and Depression Following Sexual Assault
(2012-04-09)
Victims of sexual assault have a high risk for posttraumatic stress disorder (PTSD). However, exposure to sexual assault alone is not sufficient for the development of PTSD. This study examined the impact of victim-perpetrator ...