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Dissertations / Theses on the topic 'Smaller vehicles'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Roca, Ramos Mauro William, and Padilla Leyla Angélica Balboa. "Sistema de control de infracciones y sanciones para vehículos menores “mototaxis”." Bachelor's thesis, Universidad Ricardo Palma, 2015. http://cybertesis.urp.edu.pe/handle/urp/1274.

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Las entidades públicas como las Municipalidades rurales se encuentran agobiadas por los diferentes desafíos a los cuales deben hacer frente a la ciudadanía. En este caso es la transparencia de información en la administración de control de sanciones de los vehículos menores (Mototaxis). El principal problema que existe es que al no contar con un sistema informático que permita administrar el control de sanciones, existen deficiencias en la administración como: pérdidas de información, informalidad administrativa, pérdida de tiempos en registros y consultas de infracciones. Para este problem

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2

Tsui, Bing-cheung, and 徐秉璋. "LPG vehicles: will they replace small diesel vehicles in Hong Kong?" Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31254123.

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3

Tsui, Bing-cheung. "LPG vehicles : will they replace small diesel vehicles in Hong Kong? /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19946041.

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4

Foster, Tyler Michael. "Dynamic Stability and Handling Qualities of Small Unmanned-Aerial-Vehicles UNMANNED-AERIAL-VEHICLES." BYU ScholarsArchive, 2004. https://scholarsarchive.byu.edu/etd/219.

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General aircraft dynamic stability theory was used to predict the natural frequencies, damping ratios and time constants of the dynamic modes for three specific small UAVs with wingspans on the scale from 0.6 meters to 1.2 meters. Using USAF DatCom methods, a spreadsheet program for predicting the dynamic stability and handling qualities of small UAVs was created for use in the design stage of new small UAV concept development. This program was verified by inputting data for a Cessna-182, and by then comparing the program output with that of a similar program developed by DAR Corporation. Pred

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5

Call, Brandon R. "Obstacle Avoidance for Small Unmanned Air Vehicles." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1556.pdf.

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6

Gibbs, John H. "Actuated Continuously Variable Transmission for Small Vehicles." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1238819759.

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7

Ostler, Jon N. "Flight Testing Small, Electric Powered Unmanned Aerial Vehicles." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1223.pdf.

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8

Deucker, Stefan. "An efficient propulsion system for small underwater vehicles." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/44486.

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9

Francis, Richard J. (Richard James) 1974. "A systems study of very small launch vehicles." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9383.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1999.<br>Includes bibliographical references (p. 111-115).<br>Motivated by the continuing miniaturization of small satellites and ballistic payloads, this thesis studies the perform&ace and feasibility of very small launch vehicles (15 kg- 2000 kg liftoff mass). Gross payload performance for several vehicles was calculated with a commercial three degree of freedom trajectory code. The significance of aerodynamic drag on small vehicles is discussed. Both the options of air and ground-launched vehicles w

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10

Bryan, Frank Joseph. "Power-train design for small fuel cell vehicles." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/powertrain-design-for-small-fuel-cell-vehicles(11d5884d-2a09-4f11-b1e4-53240abcc74c).html.

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A comparison of two vehicle power-train topologies is performed for a small fuel cell andsupercapacitor powered delivery vehicle to determine the power-train weight and costtrade-off. The topologies use either a single DC-DC converter to interface the fuel cell,with the supercapacitors directly connected to the traction drive, or two convertersseparating both the fuel cell and supercapacitor from the traction drive. Energymanagement strategies are implemented to increase system efficiency at the expense ofincreased supercapacitor storage. The two converter system results in a lower cost and ma

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11

Seubert, Carl Reiner. "Refrigerant-based propulsion system for small spacecraft." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.umr.edu/thesis/pdf/Carl_Reiner_Seubert_Masters_Thesis_09007dcc8031c34d.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 2007.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 11, 2007) Includes bibliographical references (p. 115-119).

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12

Svanberg, Craig E. "Biomimetic micro air vehicle testing development and small scale flapping-wing analysis /." Wright-Patterson Air Force Base, Ohio : Ft. Belvior, VA : Springfield, Va. : Air Force Institute of Technology, Graduate School of Engineering and Management ; Available to the public through the Defense Technical Information Center ; National Technical Information Service [distributor], 2008. http://www.dtic.mil/dtic/.

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Thesis (M.S. in Engineering and Management)--Air Force Institute of Technology, March 2008.<br>Title from reproduction cover. "March 2008." Thesis advisor: Dr. Mark Reeder. Performed by the Air Force Institute of Technology, Graduate School of Engineering and Management (AFIT/EN); sponsored by the Air Force Research Laboratory. Submitted in partial fulfillment of the requirements for the degree of Master of Science in Aeronautical Engineering from the Air Force Institute of Technology, March 2008.--P. [ii]. "AFIT/GAE/ENY/08-M27." Includes bibliographical references (p. 99-100). Also available

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13

Rivera, Gilbert D. "Turbochargers to small turbojet engines for uninhabited aerial vehicles." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA346353.

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Thesis (Degree of Aeronautical and Astronautical Engineer) Naval Postgraduate School, June 1998.<br>Thesis advisor(s): Garth V. Hobson, David W. Netzer. "June 1998." Includes bibliographical references (p. 73). Also available online.

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14

Pinchin, James Thomas. "GNSS Based Attitude Determination for Small Unmanned Aerial Vehicles." Thesis, University of Canterbury. Mechanical Engineering, 2011. http://hdl.handle.net/10092/5759.

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This thesis is concerned with determining the orientation of small Unmanned Aerial Vehicles(UAVs). To make commercial use of these aircraft in aerial surveying markets their attitude needs to be determined accurately and precisely throughout a survey flight. Traditionally inertial sensors have been used on larger aircraft to estimate both position and orientation in combination with Global Navigation Satellite Systems (GNSS). High quality inertial sensors have many downsides when used on the small UAV. They are expensive, power hungry and often heavy. Inertial sensors are vulnerable to vibra

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15

Garcia, Richard D. "A Modular Onboard Processing System for Small Unmanned Vehicles." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3755.

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This work describes the design and implementation of a generic lightweight onboard processing system for miniature Unmanned Vehicles (UVs) that is computationally powerful and highly adaptable. First, several classical approaches to giant scale and full size UV onboard processing systems are described along with their corresponding limitations. Second, a detailed study is presented that describes the key characteristics of an onboard system along with associated limitations. Next, an implementation of a generic onboard system capable of vision processing and servo based control is presented al

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16

Christiansen, Reed Siefert. "Design Of An Autopilot For Small Unmanned Aerial Vehicles." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd445.pdf.

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17

Mylin, Alicia K. "A COMMUNICATION LINK RELIABILITY STUDY FOR SMALL UNMANNED AERIAL VEHICLES." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_theses/483.

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Dependable communication links for unmanned aerial vehicles (UAV) are crucial to operational reliability and mission success. This study is focused on evaluating the probability of successful communication links for small UAVs. A program based on the Friis Transmission Equation was developed to calculate the power received in a line-of-sight communication link. The program was used to evaluate the probability of success for a variety of flight pa

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18

Tammannagari, Rohit Reddy. "DESIGN AND DEVELOPMENT OF STRUCTURALLY FEASIBLE SMALL UNMANNED AERIAL VEHICLES." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_theses/5.

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This study is focused on designing conformal antennas to be deployed with the inflatable wings for unmanned aerial vehicles (UAV). The main emphasis is on utilizing the structure of the wing to develop antennas for various frequency bands, while maintaining the wing’s aerodynamic performance. An antenna modeler and optimizer software called 4NEC2 and a program called WIRECODE were used to design and determine the characteristics of the antennas. The effect of flexibility of the inflatable wing on the antenna characteristics during flight is also evaluated.

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19

Foster, Tyler M. "Dynamic stability and handling qualities of small unmanned-aerial-vehicles /." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd643.pdf.

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20

Ponda, Sameera S. "Trajectory optimization for target localization using small unmanned aerial vehicles." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/47794.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2008.<br>Includes bibliographical references (p. 189-197).<br>Small unmanned aerial vehicles (UAVs), equipped with navigation systems and video capability, are currently being deployed for intelligence, reconnaissance and surveillance missions. One particular mission of interest involves computing location estimates for targets detected by onboard sensors. Combining UAV state estimates with information gathered by the imaging sensors leads to bearing measurements of the target that can be used to deter

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21

Ofodile, Nkemdilim Anulika. "Decentralized anti-windup compensator designs for small unmanned aerial vehicles." Thesis, University of Leicester, 2017. http://hdl.handle.net/2381/39848.

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This thesis studies the design and implementation of anti windup compensators for UAVs with magnitude and rate saturated actuators. The focus is on two types of UAVs; a Quadrotor UAV and a Fixed wing UAV. Decentralized anti-windup compensators are designed to address the problem of magnitude saturation in Quadrotor UAVs. The developed anti-windup compensators are founded on an LMI-based approach previously used in literature to provide global stabilty guarantees with some level of performance guarantees. The work on the decentralized anti-windup compensators for Quadrotor UAVs are further impr

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22

Witushynsky, Tim C. "Experimental Investigation into the Aerodynamics of Small Air Vehicles with Thin Flexible Wings." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1212714988.

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23

Blomberg, Magnus. "High Bandwidth Control of a Small Aerial Vehicle." Thesis, Linköpings universitet, Reglerteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119622.

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Small aerial vehicles such as quad-rotors have been widely used commercially, for research and for hobby for the last decade with use still growing. The high interest is mainly due to the vehicles being small, simple, cheap and versatile. Among rigid body dynamics fast dynamics exist cohering to motors and other fast actuators. A linear quadratic control design technique is here investigated. The design technique suggests that the linear quadratic controller can be designed with penalties on the slow states only. The fast dynamics are modeled but the states are not penalised in the linear quad

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24

Kim, Jong Young. "Modeling and control of a small autonomous vehicle." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43408.

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25

Clauberg, Bernd. "Adaptive control of a small autonomous underwater vehicle." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13024.

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26

Wilkman, Dennis, and Oscar Andersson. "Propulsion system for a small unmanned aerial vehicle." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276078.

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For unmanned aerial vehicles there is a wide variety of selection for propulsion systems. Depending on the specific choice of system, the characteristics of the aircraft vary significantly. The choice is also dependent on the size of the UAV itself as well as desired performance and utility. Propulsion systems have made significant advancements over the last decades in the UAV sector. The Skywalker X8 is a popular small UAV and most commonly flown electrically. What propulsion would then be fitting for the originally 2 m wingspan Skywalker X8 if its size in dimensions were doubled. This study

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27

Wikman, Dennis, and Oscar Andersson. "Propulsion system for a small unmanned aerial vehicle." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276078.

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For unmanned aerial vehicles there is a wide variety of selection for propulsion systems. Depending on the specific choice of system, the characteristics of the aircraft vary significantly. The choice is also dependent on the size of the UAV itself as well as desired performance and utility. Propulsion systems have made significant advancements over the last decades in the UAV sector. The Skywalker X8 is a popular small UAV and most commonly flown electrically. What propulsion would then be fitting for the originally 2 m wingspan Skywalker X8 if its size in dimensions were doubled. This study

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28

Jones, George Pierce. "The feasibility of using small unmanned aerial vehicles for wildlife research." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0002620.

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29

Souanef, Toufik [Verfasser]. "Adaptive Guidance and Control of Small Unmanned Aerial Vehicles / Toufik Souanef." Düren : Shaker, 2019. http://d-nb.info/1202219098/34.

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30

Prince, Robert A. "Autonomous visual tracking of stationary targets using small unmanned aerial vehicles." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FPrince.pdf.

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31

Jackson, Joseph A. "Panoramic video for efficient ground surveillance from small unmanned air vehicles /." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1811.pdf.

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32

Jackson, Joseph Aaron. "Panoramic Video for Efficient Ground Surveillance from Small Unmanned Air Vehicles." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/870.

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As unmanned air vehicle (UAV) utilization increases in Wilderness Search and Rescue (WiSAR) efforts, onboard sensors yielding more information will be desired. UAVs can assist WiSAR efforts by accelerating the ground search process through returning quality aerial footage of the terrain. Additionally, tracking the progress of a search by populating a digital map with video resolution data increases confidence that a comprehensive search of the region has been made. This thesis presents methods for acquiring video from multiple video sensors and fusing them into a single rendered video stream a

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33

Barnett, Shane. "Development of a Tow Capacity Test Device for Small Unmanned Vehicles." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/30968.

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Unmanned ground vehicles (UGVs) will increasingly be used for tasks such as retrieving injured soldiers from a battlefield, transporting supplies, and towing other small vehicles and payloads. To date, the unmanned test community has not standardized on an apparatus or test operating procedure (TOP) specifically for evaluating the towing capacity of small unmanned ground vehicles. Draw-bar testing has been adapted by several groups to quantify small unmanned ground vehicle (SUGV) tow capacity; however, these devices are inherently limited to measuring peak static towing force. This paper de

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34

Gurtner, Alex. "Investigation of fisheye lenses for small UAV aerial photography." Queensland University of Technology, 2008. http://eprints.qut.edu.au/19323/.

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Aerial photography obtained by UAVs (Unmanned Aerial Vehicles) is an emerging market for civil applications. Small UAVs are believed to close gaps in niche markets, such as acquiring airborne image data for remote sensing purposes. Small UAVs will be able to fly at low altitudes, in dangerous environments and over long periods of time. However, the small lightweight constructions of these UAVs lead to new problems, such as higher agility leading to more susceptibility to turbulence and limitations in space and payload for sensor systems. This research investigates the use of low-cost fisheye l

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35

French, Jr William David. "A Conceptual Design and Economic Analysis of a Small Autonomous Harvester." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/47787.

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Current trends in agricultural equipment have led to an increasing degree of autonomy. As the state of the art progresses towards fully autonomous vehicles, it is important to consider assumptions implicit in the design of these vehicles. Current automation in harvesters have led to increased sensing and automation on current combines, but no published research examines the effect of machine size on the viability of the autonomous system. The question this thesis examines is: if a human is no longer required to operate an individual harvester, is it possible to build smaller equipment that is

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36

McKeon, James Bernard. "Incorporation of GPS/INS small autonomous underwater vehicle navigation." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23924.

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37

Dyer, Kyrilian G. (Kyrilian Gawan) 1977. "Aerodynamic study of a small, ducted VTOL aerial vehicle." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/17539.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.<br>Includes bibliographical references (p. 119-121).<br>The Perching Unmanned Aerial Vehicle (PUAV) is a 9-inch diameter ducted vertical takeoff and landing reconnaissance vehicle with the capability of fast-forward cruise flight. Currently in the development stage, the program is envisaged to yield a man-portable craft that a foot soldier can use to provide over-the-hill observation. Several prototypes have been constructed and tested, with mixed results. Concerns regarding duct aerodynamics led

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38

Toohey, Damian. "Development of a small parafoil vehicle for precision delivery." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32457.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2005.<br>"June 2005."<br>Includes bibliographical references (leaf 84).<br>The goal of the MIT Draper Partnership Program is to develop a system capable of deploying a cluster of ISR (intelligence, surveillance, reconnaissance) sensors over an area of interest. One of the proposed methods is a guided parafoil vehicle that is deployed from a UAV. After unfurling its canopy, it is envisioned that the vehicle would follow a planned trajectory to the target, and vision-based targeting system would be emplo

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Midha, Raj Chander 1977. "Path following control system for a small autonomous vehicle." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/89321.

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40

Zhou, Yan. "Development of a data collection system for small Unmanned Aerial Vehicles (UAVs)." Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/1299.

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Dissertation (MTech (Mechanical Engineering))--Cape Peninsula University of Technology, 2011<br>This paper presents the development of a data collection system for a small unmanned Aerial Vehicle (UAV) flight. The following three facets comprise of a UAV system: (1) a UAV aircraft; (2) onboard avionics; and (3) a ground control station subsystem (Taha et al., 2010:1). In this project, the UAV aircraft is based on the low-cost autonomous quad-rotator system named “Arducopter Quad”, where the onboard avionic system utilizes both an ArduPilot Mega (APM) on-board controller and IMU sensor shi

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41

Perry, John Hendrix. "A synthesized directly georeferenced remote sensing technique for small unmanned aerial vehicles." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0025070.

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42

Landon, Steven D. "Development of Deployable Wings for Small Unmanned Aerial Vehicles Using Compliant Mechanisms." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1917.pdf.

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43

Goicoechea, Misael. "Methodology for the Assessment of the Effect of Wave Wash on Moored Small Craft." Thesis, KTH, Marina system, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-265634.

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Wake wash problems are a rather recent issue within the maritime industry. They involve the potential harmful effects that the waves generated by ships can produce. Erosion of the shore, smothering of local fauna and excessive motion of vessels are just examples of these effects. Having accurate infor-mation about the probability and severity of wake wash problems is funda-mental in the design stage of a vessel, a shipping route or a channel passage. A detailed study of previous works and existing tools for simulating the poten-tial different harmful effects of wake wash is performed in order

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Ward, Garrett. "Design of a Small Form-Factor Flight Control System." VCU Scholars Compass, 2014. http://scholarscompass.vcu.edu/etd/3448.

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This work outlines a design for a small form-factor flight control system designed to fly in a wide variety of airframes. The system was designed with future expansion in mind while providing a complete, all-in-one solution to meet present needs. This system as presented meets most needs while remaining relatively low cost. It has a completely integrated IMU solution as well as on- board GPS. It is capable of basic waypoint navigation. This solution was testing using software and hardware-in-the-loop simulation which proved its functionality.

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Chase, Adam Thomas. "Flight Testing Small UAVs for Aerodynamic Parameter Estimation." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1191.

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A flight data acquisition system was developed to aid unmanned vehicle designers in verifying the vehicle's design performance. The system is reconfigurable and allows the designer to choose the correct combination of complexity, risk, and cost for a given flight test. The designer can also reconfigure the system to meet packaging and integration requirements. System functionality, repeatbility, and accuracy was validated by collecting data during multiple flights of a radio-controlled aircraft. Future work includes sensor fusion, thrust prediction methods, stability and control derivative est

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Giavis, Konstantinos C. "Catalytic control of individual hydrocarbons from a small utility gasoline engine." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09292009-020311/.

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Gromadski, Christopher R. "Extending the endurance of small unmanned aerial vehicles using advanced flexible solar cells." Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/27836.

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Most currently fielded small unmanned aerial vehicles (SUAV) have flight times limited to 90 minutes due to battery life and are often forced to work in teams of multiple craft to provide tactical level units with continuous observation of the battlefield. Continuous operations additionally place a strain on logistics trains by requiring either more batter-ies or fuel to support recharging. Prior theses have examined the ability of solar cells to extend the flight endurance and capabilities of SUAVs during peak sunlight conditions. This research demonstrated the viability of augmenting the onb

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Macdonald, John Charles. "Efficient Estimation for Small Multi-Rotor Air Vehicles Operating in Unknown, Indoor Environments." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3496.

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In this dissertation we present advances in developing an autonomous air vehicle capable of navigating through unknown, indoor environments. The problem imposes stringent limits on the computational power available onboard the vehicle, but the environment necessitates using 3D sensors such as stereo or RGB-D cameras whose data requires significant processing. We address the problem by proposing and developing key elements of a relative navigation scheme that moves as many processing tasks as possible out of the time-critical functions needed to maintain flight. We present in Chapter 2 analysis

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Burns, Meghan Colleen. "Safety of Flight Prediction for Small Unmanned Aerial Vehicles Using Dynamic Bayesian Networks." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83381.

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This thesis compares three variations of the Bayesian network as an aid for decision-making using uncertain information. After reviewing the basic theory underlying probabilistic graphical models and Bayesian estimation, the thesis presents a user-defined static Bayesian network, a static Bayesian network in which the parameter values are learned from data, and a dynamic Bayesian network with learning. As a basis for the comparison, these models are used to provide a prior assessment of the safety of flight of a small unmanned aircraft, taking into consideration the state of the aircraft and w

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Moses, Kenneth C. "A Durable Terrestrial Drive Train for a Small Air Vehicle." Cleveland, Ohio : Case Western Reserve University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=case1270233578.

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Thesis (Master of Sciences (Engineering))--Case Western Reserve University, 2010<br>Department of EMC - Mechanical Engineering Title from PDF (viewed on 2010-05-25) Includes abstract Includes bibliographical references and appendices Available online via the OhioLINK ETD Center

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