Hemminger, Thomas Lee

Underwater acoustic transients can develop from avariety of sources ranging from the cry of a whale to the soundof a torpedo launch. Accordingly, detection and classification ofsuch transients by automated means can be an exceedinglydifficult task. This thesis describes the design andimplementation of a new approach to this problem based onadaptive pattern recognition employing neural networks andadditional techniques including the Hausdorff metric. This systemuses self-organization to both gene...

Morton, Douglas Wilson

The marine mollusc Aplysia californica carries outbiting, swallowing, and rejection responses using differentmovements of its radula, a structure that is used to grasp andmove food. Video records during feeding show that the timing ofradula closure during the radula protraction-retraction cycleconstitutes a major difference between ingestion (biting orswallowing) and rejection. During ingestion, the radula is closedas it retracts. During rejection, the radula is closed as itprotracts. Using in v...

Shafique, Naseer Ahmed

Mesozoic to Cenozoic biostratigraphy of NW Pakistan hasbeen conducted in order to document the temporal and spatialrelationship between different marine strata with the help ofremote sensing and Geographic Information Systems (GIS). Theserelationships were then used to help distinguish differenttectonostratigraphic units in the Waziristan and the Kurram areaslocated at the northwestern margin of the Indo-Pakistani craton.Extensive biostratigraphic work in the Waziristan and Kurramareas enabled t...

Sullivan, Sean Robert

This study looks at the behavior of transverse joints inprecast deck panel systems that are used in the construction ofbridge decks. An extensive background provides information onthe types of transverse joints commonly used by differentMidwest state departments of transportation, discussions on themechanical behavior and failure modes of the transverse joints,and applicable code provisions. SAP 2000 and Ansys 6.1 wereused to carry out a finite element analysis to investigate thecause cracking i...

Dobrucki, Wawrzyniec L.

The purpose of this work was to examine the role played by adeficit in nitric oxide (NO) and overproduction of superoxide(O2��) and peroxynitrite (ONOO��) in contributing to thelarge cerebral infarcts seen in hypertensive and/or oldanimals. The role of NO-mediated mechanism in hypobaric hypoxiahas been also studied. Additionally, the positive effect of thehypoxic adaptation on cerebral ischemia and reperfusion (I/R)has been demonstrated.Cerebral infarction was produced in rats by occlusion of th...

Deependra, Kantha

Hydrodynamic pumping effect in a two dimensional electronsystem is a new phenomenon. In this thesis, we areinvestigating hydrodynamic pumping in a GaAs/Ga0.70Al0.30Asheterostructure. The mesoscopic structure was written byelectron beam lithography and photolithography. An electronbeam was injected from one aperture into the Fermi sea ofelectrons. We observed that electrons were extracted fromanother aperture as the beam of electrons swept past thataperture at low magnetic fields. Both voltage an...

Liao, Bo

As energy and material industries develop faster than everin modern society, and air pollution has been one of the mostimportant issues in environmental protection, the electrostaticprecipitator (ESP) has become more important than ever inindustry. The ESP technique has been developed over almost 400years and is widely applied in industry plants at the presenttime. Recent research has focused on every characteristic ofit. Cross-discipline technology and science were applied in itsstudy: physics,...

McBrayer, Lance D.

In fish, mammals, and birds the functional morphology of the feeding apparatus has been well studied. However in lizards (non-ophidian squamates), much less is known about the functional variation that may result from their diverse cranial morphologies. Here, I present four functional studies of the lizard feeding apparatus.Initially, the feeding kinematics of lizards were quantified and used to test two existing models of prey transport for all amniotes. To do so, I devised a method to quantita...

Hollingsworth, Bradley K

Order picking costs typically account for 50% of theoperating costs in distribution center (DC) operations. ManyDCs use a forward-reserve storage strategy to minimize thesecosts. This research is focused on minimizing replenishmentcosts while maintaining pick savings through a dock-to-forward(DTF) technique, which bypasses reserve storage to reduceadditional handling.Four decision strategies for allocating SKUs todiscretionary pick faces to utilize the DTF technique weredeveloped and tested unde...

Last, Jennifer L.

Streams that are heavily impacted by acid mine drainagetypically exhibit low diversity of macroinvertebrates and fish.The overall goal of this thesis was to analyze the relationshipbetween benthic macroinvertebrate community parameters and waterchemistry from sites in southeastern Ohio. Three studies werecompleted to accomplish this goal: field sampling ofmacroinvertebrates, metal and pH laboratory bioassays performedonSialissp., and a colonization study using AMD contaminated substrate.The resu...

Kanuckel, Corey

The primary goal of this study was to quantify the effectsfrom two point sources of acid mine drainage (AMD) upon thereceiving biotic assemblages, specifically fish andmacroinvertebrates, along the main branch of Sunday Creek,Southeastern OH. This study focused upon the response zonedownstream from the Corning and Truetown point sources of AMDthrough the establishment of sample monitoring stations. Thesesample stations were analyzed to determine the extent of AMDdisturbance over the spatial grad...

Cubukcu, Ebru

Wayfinding is the spatial knowledge about one��scurrent location, destination, and the spatial relation betweenthem. Wayfinding problems threaten people��s sense ofwell-being, and cause loss of time and money. Designers andplanners can improve wayfinding when they understand how physicalenvironmental factors affect people��s wayfindingperformance. This study explores the effect of personal andphysical environmental characteristics on wayfinding performance.The personal characteristics include ge...

Grim, Melissa L

Rates of physical activity have been shown to declineacross the lifespan, particularly between adolescence andadulthood. The purpose of the study was to complete a constructvalidation of a web-based physical activity intervention forcollege students and to pilot-test the efficacy of theintervention in changing physical activity. The study involvedthree groups: an online group (n=46), a traditional group (n=22),and a health group (n=22). The online group received a fitnessand self-regulatory know...

Samaranayake, Chaminda Padmal

Electrochemical reactions, chemical reactions atelectrode/solution interfaces induced by current, are undesirableduring ohmic heating. These reactions may be avoidable orsuppressible through an understanding of electrochemical behaviorof ohmic heaters. Though numerous studies have dealt with theapplications of ohmic heating, little is known regardingelectrochemical aspects. Electrochemical behavior of four typesof electrode materials: titanium, stainless steel,platinized-titanium, and graphite, ...

Tew, Kwee Siong

A series of experiments in an Ohio state fish hatcheryexamined possible causes of variation in larval percid survivalincluding: over-fertilization, pond age, copper sulfatetreatment, phosphorus and copper residues in the pond sediment,fish density, and cannibalism. Also, addition of a blue dye andraising water level were evaluated as substitutes for CuSO4 useto control algal growth during catfish culture. First, I comparedpercids raised in the traditional 30 �Ggg P/l treated pondsto those raised...

Wakoko, Florence

In the 1990s Ugandan farmers became increasinglyinterested in microfinancial resources (MFRs) that were beingpromoted nationally as important means for poverty alleviationand for women��s empowerment. In Arua and Mukono, householdsdiversified their income generating strategies through formal,semi-formal and informal financial institutions. However, littlehas been done to neither assess the position of women incredit/savings initiatives nor to assess the capacity of MFRs inempowering women. There...

Fineran, Stacey A.

The spatial and temporal vegetative dynamics at MentorMarsh between 1796 and 2000 A.D. are assessed in a landscapehistory of the region, an ecological synthesis detailing theeffect of change in environmental stress within the marsh basin,and a preliminary model using fuzzy logic. A conceptual model ormethodology is developed to guide the application of theGleasonian individualistic concept of vegetative dynamics in theanalyses of vegetative-landscape systems. The ecologicalsynthesis links the in...

Koechlin, Kathleen Marie

Using longitudinal data recently (1999-2001) collectedfrom 4-H youth in central Ohio, this dissertation��sobjective was to develop Composite Measurement Scales (CMSs) thatparents can use to assess injury risk among youth who performagricultural tasks. Variables available for modeling includeseveral youth-based (e.g., selected physical andneuropsychological characteristics) and parent-based (e.g.,parenting style) factors. For up to 13 weeks, daily data wereobtained on time spent on each of 52 cho...

Ali, Tarig Abdelgayoum

In this dissertation, four positional quality measuresfor linear features presented by Ramirez (2000) were thoroughlyinvestigated on shoreline features including GeneralizationFactor, Distortion Factor, Bias Factor, and Fuzziness Factor. Theinvestigation addresses the uniquness of each one of the fourmeasures and the effect of random errors, systematic errors andblunders in the shoreline on the four measures. The results showthat these four measures describe different characteristics of ashoreli...

Martinez, Felix A

Simple optimality processes and decisions can lead tocomplex temporal variability and variability among individuals.We pursued this question in relation to coral reef fishsettlement decisions and their implications on social groupdynamics. We developed a model of optimal "choice" rather thanoptimal group size. The optimality model assumed a cost tosettling fish and no post-settlement movement. The modelpredicted that settling DASCYLLUS ALBISELLA should show nopreference for particular ...

BANYAS, JEANNE M

Urban waterfronts developed as areas of intense,industrial use. The water and its edge often became polluted tothe point where they were toxic. Cities moved away from thisenvironmental degradation by re-centering inland. After years ofthinking of the waterfront as a contaminated, industrial areaunfriendly to normal life, highways and other massive pieces ofinfrastructure were built, decisively separating city and water.Now, through the decentralization of industry, the shift from anindustrial to...

ARMSTRONG, KRISTOPHER MARK

This thesis investigates the socio-political characterof Late Bronze Age (LBA) Cyprus during the sixteenth tofourteenth centuries BC primarily from an archaeological point ofview. Past theories concerning this subject suggest that acentralized political authority ruled Cyprus during this timeperiod. Such suggestions are used to support the hypothesis thatCyprus was Alashiya (a kingdom mentioned in contemporaryfourteenth century texts from various kingdoms). While it is thegeneral assumption of s...

ZOBRIST, KURT DANIEL

When you bring together two seemingly dissonantelements, the results usually are not pleasing to the senses.However, by striking a balance between the two and finding a waythat both can co-exist in harmony, the outcome can be innovativeand even revolutionary. This thesis combines the desire of humansto live near exotic environments with the reality of the fragileecosystems of the world. A growing segment of the population, theBaby Boomers, is looking for exciting new ways to spend theirretiremen...

HAGEN, JOSHUA A.

Deoxyribonucleic Acid (DNA) extracted and purified fromsalmon sperm was investigated for use in electro-optic devices asa cladding layer. This DNA material is derived from the wasteproduct from salmon fisheries, thus it is a completely��green�� material. The experiments were conducted intwo phases; material characterization and devicecharacterization. Both of these phases conclude that thisbiologically-derived material is suitable for use inelectro-optic waveguiding devices. The 500,000 molecula...

CAO, PETER M.

Soil strength sampling is both labor-intensive and timeconsuming. In most cases, soil strength sampling requires humanlabor in collecting samples and doing tests on-site in anunstructured environment or in a laboratory. The purpose of thisresearch is to make an unprecedented attempt of establishing afully autonomous soil strength sampling system. Two major issueswere considered. 1. How to navigate a multi-sensor autonomousvehicle (mobile robot) in an unstructured environment. 2. How tomeasure th...

Weisser, Jennifer Anne

The marking of sacred places, particularly fatalities,is a long practiced human tradition. This study focuses on microsacred sites in Warren County, Ohio from 1988 through mid 2003.Micro sacred sites are briefly defined as roadside memorialsdedicated to victims who have lost their lives via automobileaccidents. Numerous mechanisms may influence the memorializationof a site, but this thesis concentrates on quantifying onlypreviously discussed variables from other studies. Thememorialization ratio...

JONES, MYRA SUSAN

The purpose of this study was to identify the variablesthat influence the frequency of personal respiratory protection(PRP) use by workers in swine confinement buildings (SCBs). Thestudy was designed to answer four research questions: 1). What isthe validity and reliability of the Personal RespiratoryProtection Survey (PRPS)? 2). How frequently do workers in SCBswear PRP? 3). How do demographics, occupational histories, andself-reported respiratory health histories influence the use ofPRP in SCB...

TREGO, KRISTINE M.

Over the past fifty years, Nautical Archaeology hasbeen shedding light on the ways by which people of the ancientworld moved commodities between cities across the Mediterranean,while they consequentially also spread culture and technology.The academic community, however, has been slow to realize theimportance of this information and utilize it for understandingthe mechanics and magnitude of ancient maritime trade. Byexamining the results of underwater excavations, we can gain muchknowledge about...

FERGUSON, CHAD ALLEN

To better understand the processes that producetime-averaged fossil assemblages, paleontologists have longinvestigated the formation of subfossil assemblages on modernseafloors. Generally, it has been demonstrated that theseassemblages faithfully reflect the living assemblages and benthicenvironments from which they were derived. Nevertheless, they maytypically contain skeletal material that is hundreds to thousandsof years old, and few researchers have considered how subfossilassemblages change...

Butzler, Julia M

The effects of nutrient input into aquatic systems has been studied frequently; typically, these studies report an increase in algal biomass and a decrease in species diversity in response to an increase of nutrients. However, it is not clear why similar aquatic communities will respond differently to nutrient additions of similar magnitudes, resulting in alternative communities. Because variance in natural ecosystems is pervasive, perhaps it is this variability that helps determine the final co...

Luo, Yupeng

Fiber Reinforced Polymer (FRP) composites have been considered as good alternatives for the repair and rehabilitation of damaged or deteriorating structures (e.g. highway bridges) recently. The present study reports on the field study of a steel beam-FRP deck composite bridge in Pennsylvania. The objective of the study is to assess the composite action between the steel beam-FRP deck system by evaluating the neutral axis location, the effective compression flange width and the distribution facto...

Shea, Laura R.

A novel myosin binding protein designated 53K (p53EMBP)has been identified in unfertilized sea urchin eggs. (Yabkowitzand Burgess, 1987). Antibody against p53EMPB was used to selectrecombinant cDNAs from a sea urchin oocyte library. Anapproximately 1,000 base pair sequence was obtained, a very smallfragment of a much larger gene. Based on Southern blot analysisit was found that this gene codes for a very large mRNA. Thisindicated that the gene was much larger than the approximately1,000 base pai...

Tsai, Hui-Ju

Complex diseases such as type 2 diabetes, hypertension and psychiatric disorders have been major public health problems in US. In order to increase the power in the linkage analysis of complex traits, genetic heterogeneity has to be taken into account. During the past few years, several methods have been proposed for dealing with this issue by incorporating covariate information into the affected sib pair (ASP) analysis. However, it is still not clear how these approaches perform under different...

Aluko, Obadamilola

In wave propagation, the phenomenon of dispersion, whereby different frequencies travel at different velocities, can result in significant nonstationarities, i.e., time- and spatially-varying characteristics of the wave. This effect is particularly strong in shallow water sound propagation, due to the waveguide-like action of the ocean bottom and surface.These channel-induced nonstationarities can have a deleterious impact on automatic detection and classification in the absence of signal proces...

Dvorznak, Michael Joseph

It is estimated that there are 85,000 serious wheelchair accidents annually, of which 80% are attributable to tips and falls. Despite the increasing trend in wheelchair accidents every year, there is little literature on the cause and prevention of these accidents. Test dummies provide an ethical and practical alternative to subjects when assessing the risks and prevention mechanisms of tips and falls in controlled studies. However, design criteria for anthropomorphic test devices (ATDs) were ba...

Keelor, D. Christian

The portable field data acquisition system consists of four components: datalogger, Wheatstone bridges, multiplexers, and portable computer. The data acquisition system fulfills the role of a portable, self-powered measurement device necessary for structural field monitoring and will also serve as a measurement platform for future field tests conducted by the University of Pittsburgh.To better illustrate the capabilities of the field data acquisition system, an application is illustrated using t...

Claybaugh, Brodie G.

Most bridges located in major cities experience large traffic volumes, which require bridge decks to be extremely durable under this constant loading. Concrete filled steel grid bridge decks have exhibited extended service lives under severe urban traffic conditions, and in some instances, have been in use for more than 60 years. Concrete filled steel grid decking can be a viable option for both decking and re-decking operations since it can be installed quickly, and because it can be equipped w...

Delgado-Espinoza, Florencio German

This dissertation examines the relationship between intensive agriculture and the development of chiefly societies in the Lower Guayas Basin, coastal Ecuador. The Yaguachi chiefdom arose in the area at least during the Integration Period AD 700-Spanish contact. This social formation built intensive agriculture technology (raised fields) and large earth mounds. Two approaches, top-down and a bottom-up, are contrasted to identify where along a socio-political continuum the organization of the Yagu...

Taheri-Ardebili, Abdolreza

The utilization of Electroless Nickel-Phosphorus (EN) coatings has witnessed a staggering increase during the last two decades. Many outstanding characteristics of the EN coating method have generated a lot of interest in various industries including oil and gas, electronic, chemical, automotive, aerospace, and mining. Some of the highlighted characteristics of EN coatings aresuperior corrosion and wear resistance especially in environments containing H2S and CO2, superior mechanical properties,...

Wu, Duqiang

Heavy load equipment, such as tractors, shovels, cranes, airplanes, etc, often employ fluid power (i.e. hydraulic) systems to control their loads by way of valve adjustment in a pump-valve control configuration. Most of these systems have low energy efficiency as a consequence of pressure losses across throttle valves. Much of the energy is converted into heat energy which can have determinantal effects on component life and the surrounding environment.From an energy efficiency point of view, an...

Peterhänsel, Arndt

ABSTRACTCarbonate platforms dominated by great thicknesses of ostensibly uniform, thick bedded, poorly fossiliferous and burrow-mottled, subtidal limestones are found throughout the Phanerozoic, yet are poorly understood. Deposited in the aftermath of the FrasnianFamennian extinction event, the Palliser/Wabamun Formation with a thickness of up to 600 m and an extent of about 600 000 km2 represents one of the largest of such platforms to have ever existed.The architecture and palaeoenvironment of...

Pinder, Shane Donald

A design approach for an aircraft takeoff performance monitoring system (TOPMS) is described. In this approach, it is proposed that the Global Positioning System (GPS) in conjunction with a discrete Kalman Filter be used to determine aircraft acceleration, ground speed, and position relative to the end of the runway. A practical evaluation of the feasibility of this proposal showed clear superiority of a GPS-derived acceleration over a more traditional method employing accelerometers. This study...

Winquist, Brandace

Hormone replacement therapy (HRT) has been studied as a protective factor for cognitive decline and dementia. However, study findings have been inconsistent. Variation in study findings may be due to differences in study designs, small sample size, exposure ascertainment, diagnostic procedures, and inclusion of relevant risk and confounding factors. Moreover, there may be significant differences between the characteristics of women choosing to use HRT and those opting not to use the therapy.Usin...

Wiwattarangkul, Pornpat, 1976-

Title from title page screen (viewed on Feb. 28, 2003). | Thesis advisor: Kim L. Jensen. | Document formatted into pages (viii, 72 p. : ill., col. maps). | Vita. | Thesis (M.S.) -- University of Tennessee, Knoxville, 2002. | Includes bibliographical references (p. 60-63). | Mode of access: World Wide Web. | Environmental wood certification programs could play an important role in conserving forests across countries such that several studies on the feasibility of certification programs have been ...

Catoire, Philippe A., 1964-

Mode of access: World Wide Web. | Title from title page screen (viewed on Sept. 11, 2003). | Thesis advisor: Robert B. Richards. | Document formatted into pages (vii, 52 p. : ill. (some col.)). | Thesis (M.S.) -- University of Tennessee, Knoxville, 2003. | Vita. | Includes bibliographical references (p. 45-46). | The Office of the Secretary of Defense chartered the Joint Shipboard Helicopter Integration Process (JSHIP), Joint Test and Evaluation (JTandE) Program to improve Joint interoperability...

Ellis, John D., 1972-

Mode of access: World Wide Web. | Title from title page screen (viewed on Sept. 24, 2003). | Thesis advisor: Robert B. Richards. | Document formatted into pages (ix, 52 p. : ill. (some col.). | Thesis (M.S.) -- University of Tennessee, Knoxville, 2003. | Vita. | Includes bibliographical references (p. 49-51). | The Precision Approach and Landing System (PALS) is an Electronic Landing Aid (ELA) installed aboard all operational Naval Aircraft Carriers and is designed to provide an all-weather appr...

Callender, Mark N. (Mark Nate), 1976-

Mode of access: World Wide Web. | Title from title page screen (viewed on Sept. 23, 2003). | Thesis advisor: Ralph D. Kimberlin. | Document formatted into pages (xv, 106 p. : ill.). | Thesis (M.S.) -- University of Tennessee, Knoxville, 2003. | Vita. | Includes bibliographical references (p. 75-78). | In this project the concept of Hands-on-Throttle and Stick (HOTAS) was applied to a general aviation (GA) aircraft. HOTAS had seen limited use in GA aircraft, but nothing that would compare to its ...

Burnette, Benjamin Thomas, 1977-

Title from title page screen (viewed on Feb. 26, 2003). | Thesis advisor: Reid Kress. | Document formatted into pages (vii, 64 p. : ill. (some col.), map). | Vita. | Thesis (M.S.) -- University of Tennessee, Knoxville, 2002. | Includes bibliographical references (p. 46-48). | Mode of access: World Wide Web. | The purpose of this thesis was to construct a discrete event model of the waste handling activities inside of the Waste Isolation Pilot Plant (WIPP) in order to examine "what-if" ...

Fukami, Tadashi, 1972-

Mode of access: World Wide Web. | Title from title page screen (viewed on Sept. 23, 2003). | Thesis advisor: James A. Drake. | Document formatted into pages (ix, 119 p. : ill.). | Thesis (Ph. D.) -- University of Tennessee, Knoxville, 2003. | Vita. | Includes bibliographical references (p. 115-118). | Despite its academic and applied importance, it has proven difficult to understand patterns of species diversity. This is in large part because multiple processes operating at various scales intera...

Fette, Martin Vincent, 1971-

Title from title page screen (viewed on Mar. 4, 2003). | Thesis advisor: Bruce W. Bomar. | Document formatted into pages (vii, 61 p. : ill. (some col.)). | Vita. | Thesis (M.S.) -- University of Tennessee, Knoxville, 2002. | Includes bibliographical references (p. 53-54). | Mode of access: World Wide Web. | The Propulsion Wind Tunnel (PWT) facility at Arnold Engineering Development Center is devoted to aerodynamic and propulsion integration testing of large-scale aerodynamic models. Models of ai...