Digital Commons Network^™

Water Well And Spring Map Of The Murray 30 X 60 Minute Quadrangle, Kentucky, Bart Davidson

Map and Chart--KGS

No abstract provided.

Water Well And Spring Map Of The Hopkinsville 30 X 60 Minute Quadrangle, Kentucky, Bart Davidson

Map and Chart--KGS

No abstract provided.

Water Well And Spring Map Of The Madisonville 30 X 60 Minute Quadrangle, Kentucky, Bart Davidson

Map and Chart--KGS

No abstract provided.

Geologic Maps And Geologic Issues In Kentucky: A Citizen's Guide, Carol Ruthven, John D. Kiefer, Stephen F. Greb, William M. Andrews Jr.

Special Publication--KGS

Citizens in all walks of life benefit from the information on geologic maps. Geologic maps are used to:

• Identify areas prone to natural hazards, such as landslides, erosion, sinkholes, and flooding
• Select locations that are suitable for tunnels, bridges, dams, and quarries
• Identify suitable sites for safe construction of homes and commercial buildings
• Select safe places for building septic systems and landfills to minimize the risk of polluting soils and groundwater
• Help farmers, landowners, and government officials locate groundwater resources and protect water quality
• Help citizens understand geologic features (such as faults, mineral deposits, and impact structures) in the landscape …

Generalized Geologic Map For Land-Use Planning: Butler County, Kentucky, E. Glynn Beck, David A. Williams, Daniel I. Carey

Map and Chart--KGS

This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site to site basis.

Water Well And Spring Map Of The Tell City 30 X 60 Minute Quadrangle, Kentucky, Bart Davidson

Map and Chart--KGS

No abstract provided.

Mapped Karst Groundwater Basins In The Harrodsburg 30 X 60 Minute Quadrangle, James C. Currens, Randall L. Paylor, Joseph A. Ray

Map and Chart--KGS

This map shows karst groundwater basins in the Harrodsburg quadrangle, determined primarily by groundwater tracer studies. It can be used to quickly identify the groundwater basins and springs to which a site may drain. Major springs and the relative size of their basin or catchment areas can be evaluated for potential as water supplies. The map also serves as a geographic index to literature on karst groundwater in the area.

Temperature Variations From Hubble Space Telescope Spectroscopy Of The Orion Nebula, R. H. Rubin, P. G. Martin, R. J. Dufour, Gary J. Ferland, K. P. M. Blagrave, X.-W. Liu, J. F. Nguyen, J. A. Baldwin

Physics and Astronomy Faculty Publications

We present Hubble Space Telescope (HST)/STIS long-slit spectroscopy of NGC 1976. Our goal is to measure the intrinsic line ratio [O III] 4364/5008 and thereby evaluate the electron temperature (T_e) and the fractional mean-square T_e variation (t²_A)across the nebula. We also measure the intrinsic line ratio [N II] 5756/6585 in order to estimate T_e and t²_A in the N⁺region. The interpretation of the [N II] data is not as clear cut as the [O III] data because of a higher sensitivity to knowledge …

Inner-Shell Photoexcitation Of Fe Xv And Fe Xvi, R. Kisielius, A. Hibbert, Gary J. Ferland, M. E. Foord, S. J. Rose, P. A. M. Vanhoof, F. P. Keenan

Physics and Astronomy Faculty Publications

The configuration-interaction method as implemented in the computer code CIV3 is used to determine energy levels, electric dipole radiative transition wavelengths, oscillator strengths and transition probabilities for inner-shell excitation of transitions in Fe XV and Fe XVI. Specifically, transitions are considered of the type 1s²2s²2p⁶3s²–1s²2s²2p⁵3l3l′3l′′ (l, l′ and l′′= s, p or d) in Fe XV and 1s²2s²2p⁶3s–1s²2s²2p⁵3l3l′ (l …

Evaluation Of Flow Dynamics Through An Adjustable Systemic-Pulmonary Artery Shunt, Timothy Brown

University of Kentucky Master's Theses

An adjustable systemic-pulmonary artery (SPA) shunt is being developed that consists of apolytetrafluoroethylene (PTFE) graft with a screw plunger mechanism. This device would allowfull control of flow through SPA shunts used to augment pulmonary blood flow in neonates bornwith single ventricle physiology. The objective of this study is to evaluate the changes this mechanismhas on flow fields for a 4 mm and 5 mm adjustable SPA shunt. Two in vitro models wereexamined; an idealized model with an axisymmetric constriction and a model developed from 3-Dreconstruction of the actual shunt under asymmetric constriction. These models were used to measurethe instantaneous velocity …

Entrainment Of Electrical Activation By Spatio-Temporal Distributed Pacing During Ventricular Fibrillation, Yiping Gu

University of Kentucky Master's Theses

Spatio-temporal variation in action intervals during ventricular fibrillation (VF) suggestthat the excitable gap may also be distributed spatio-temporally. The observation leadus to hypothesize that distributed pacing can be used to modify and entrain electricalactivation during VF. We tested this hypothesis using simulated VF and animal studies.

We simulated VF in a 400 by 400 cell matrix. Simulation results showed that activationpattern could be entrained using spatially distributed stimulation. Up to a certain limit,increasing stimulus strength and density led to improved entrainment. Best entrainmentwas obtained by pacing at a cycle length similar to the intrinsic cycle length.

In order to verify …

Issues In The Control Of Halfspace Systems, Ramprasad Potluri

University of Kentucky Doctoral Dissertations

By the name HALFSPACE SYSTEMS, this dissertation refers to systems whose dynamics are modeled by linear constraints of the form Exk+1 <= Fxk + Buk (where E, F 2 andlt;mn, B 2 andlt;mp). This dissertation explores the concepts of BOUNDEDNESS, STABILITY, IRREDUNDANCY, and MAINTAINABILITY (which is the same as REACHABILITY OF A TARGET TUBE) that are related to the control of halfspace systems. Given that a halfspace system is bounded, and that a given static target tube is reachable for this system, this dissertation presents algorithms to MAINTAIN the system in this target tube. A DIFFERENCE INCLUSION has the form xk+1 = Axk + Buuk, where xk, xk+1 2 andlt;n, uk 2 andlt;p, A 2 andlt;nn, Bu 2 andlt;np, Ai 2 andlt;nn, Bj 2 andlt;np, and A and Bu belong to the convex hulls of (A1,A2, . . . ,Aq) and (B1, B2, . . . , Br) respectively. This dissertation investigates the possibility that halfspace systems have equivalent difference inclusion representation for the case of uk = 0. An affirmitive result in this direction may make it possible to apply to halfspace systems the control theory that exists for difference inclusions.

Analysis Of Electron Transport And Luminance Mechanisms In Srs Based Blue Emitting Actfel Devices, Praveen Sivakumar

University of Kentucky Master's Theses

The purpose of this thesis is to contribute to the understanding of SrS based ACTFEL devices. Better understanding of the processes in the host phosphor will give us the possibility to design more efficient blue emitting ACTFEL devices. Towards this aim, a physical model, that describes the optoelectronic processes taking place in the phosphor, was developed and analytical equations were written. The analytical model was numerically simulated and the plots of flux flowing through the device and luminance output by the device were obtained. Experiments were performed to obtain the plots of current flowing through the device and luminance output …

Analysis Of Hydrodynamic Effects Of Microasperity Shapes On Thrust Bearing Surfaces, Ravinder Babu Siripuram

University of Kentucky Master's Theses

The present thesis is a comparative study of the hydrodynamic effects of a few deterministic microasperity shapes in a thrust slider application. Numerical study based on finite difference methods is used to find the trend of important tribological properties such as friction and leakage. Also, this work utilizes a distinctive and practical approach for comparison by considering constant load conditions, instead of constant film thickness, as is expected in an operating thrust bearing. The results are encouraging and clearly reveal the existence of a transition point for asperity area fraction where a reversal in trends for both the coefficient of …

Tunneling Study Of Superconductivity In Magnesium Diboride, Mohamed Hosiny Badr

University of Kentucky Doctoral Dissertations

Although the pairing mechanism in MgB2 is thought to be phonon mediated, there are still many experimental results that lack appropriate explanation. For example, there is no consensus about the magnitude of the energy gap, its temperature dependence, and whether it has only one-gap or not. Many techniques have been used to investigate this, like Raman spectroscopy, farinfrared transmission, specific heat, high-resolution photoemission and tunneling. Most tunneling data on MgB2 are obtained from mechanical junctions. Measurements of energy gap by these junctions have many disadvantages like the instability to temperature and field changes. On the other hand, sandwich-like planar junctions …

Controls On Middle To Late Ordovician Synorogenic Deposition In The Southeastern Corner Of Laurentia, German Bayona

University of Kentucky Doctoral Dissertations

Middle and Upper Ordovician strata in the southernmost Appalachians document initial collision along the southeastern margin of Laurentia during the Blountian orogeny, an early phase of the Taconic orogeny. Coeval drowning and exposure of different parts of the former platform and variations in stratal architecture have been attributed to tectonic and depositional loading along the collisional margin. Stratigraphic correlations, using a bentonite-graptoliteconodont time framework, a palinspastic map, and a map of subsurface basement structures, suggest that basement-fault reactivation, flexural subsidence, and eustasy variously controlled uplift, subsidence, and deposition at different sites within the peripheral foreland basin. This dissertation documents how …

The Effect Of Visual Art On Music Listening, Jennifer Sue Shank

University of Kentucky Doctoral Dissertations

The purpose of this study was to examine the effect of visual stimuli on music listening skills in pre-service elementary teachers. Visual Stimuli in this study refers to the presentation of arts elements in selected visually projected images of paintings. Music listening skills are defined as those skills needed to identify and interpret musical excerpts. A Pretest-Posttest Control-group Design was used in this study. Subjects were pre-service elementary general educators enrolled in a large southern university (N=93). Students from intact classes were randomly placed into either the experimental group or the control group. The treatment consisted of six music listening …

An Approach To The Measurement Of Sexual Behavior In The Bull (Bos Taurus) Using Variable Female Stimulus Conditions, John Denver Bailey

University of Kentucky Doctoral Dissertations

Most researchers studying sexual behavior of the bull have adopted the practice of severely restraining and sedating female stimuli, utilizing so-called "service stanchions" and quantifying behavioral events expressed by each bull. Based on these observations, bulls are classified as having high, medium, or low libido and ranked according to their ability to "service" the inanimate stimuli. It has been assumed that these methods represent appropriate measurements of reproductive behavior that will be expressed in a natural mating scenario and that bull sexual behavior can be studied in a manner that is independent of the context of the female. Hence, conventional …

A Spatial Model For Evaluating Variable-Rate Fertilizer Application Accuracy, John Patrick Fulton

University of Kentucky Doctoral Dissertations

The popularity of variable-rate technology (VRT) has grown. However, the limitations and errors ofthis technology are generally unknown. Therefore, a spatial data model was developed to generate "asapplied"surfaces to advance precision agricultural (PA) practices. A test methodology based on ASAEStandard S341.2 was developed to perform uniform-rate (UR) and variable-rate (VR) tests to characterizedistribution patterns testing four VRT granular applicators (two spinner spreaders and two pneumaticapplicators). Single-pass UR patterns exhibited consistent shapes for three of the applicators with patternsshifts observed for the fourth applicator. Simulated overlap analysis showed that three of the applicatorsperformed satisfactorily with most CVs less than 20% while …

Transmission Electron Microscopy And Flow Field-Flow Fractionation: Exploration Of The Nanoscopic Components In Partially Reduced Polyoxomolybdates By Kinetic Precipitation With De Novo Organic Molecules, Yan Zhu

University of Kentucky Doctoral Dissertations

Although molybdenum blue solutions have been known for more than twocenturies, an understanding of their chemical nature is only beginning to emerge.This dissertation aimed at elucidating the structural nature of the polydisperse,nanoscopic components in the solution phases and the solid states of partiallyreduced polyoxomolybdate (Mo-POM). The study offered at least fourcontributions to the area: (1) a rational protocol for the molecular recognition ofMo-POM with de novo organic hosts. (2) demonstration of kinetic precipitation ofa dynamic mixture of polyoxomolybdates and application of the technique to thestudy of the dynamic mixture by TEM (3) characterization of the Mo-POMnanostructures by an unusual combination …

Experimental Investigation Of Separation In A Low Pressure Turbine Blade Cascade Model, Brian Hollon

University of Kentucky Master's Theses

The flow field around a low pressure turbine blade is examined using smoke-wire flow visualization, static surface pressure measurements, and particle image velocimetry (PIV). The purpose of the experimental study is to investigate the transition and separation characteristics on low pressure turbine blades under low Reynolds number (Re) and varying freestream turbulence intensity (FSTI). A cascade model consisting of 6 Pratt andamp; Whitney PAK-B low pressure turbine blades was examined in a wind tunnel using PIV and flow visualization. Smoke-wire visualization was performed for test section exit angles of 93°, 95°, and 97°, in the range Re = …

A Survey Of Limited Nondeterminism In Computational Complexity Theory, Matthew Asher Levy

University of Kentucky Master's Theses

Nondeterminism is typically used as an inherent part of the computational models used incomputational complexity. However, much work has been done looking at nondeterminism asa separate resource added to deterministic machines. This survey examines several differentapproaches to limiting the amount of nondeterminism, including Kintala and Fischer's βhierarchy, and Cai and Chen's guess-and-check model.

Revising Horn Formulas, Jignesh Umesh Doshi

University of Kentucky Master's Theses

Boolean formulas can be used to model real-world facts. In some situation we may havea Boolean formula that closely approximates a real-world fact, but we need to fine-tune itso that it models the real-world fact exactly. This is a problem of theory revision where thetheory is in the form of a Boolean formula. An algorithm is presented for revising a class ofBoolean formulas that are expressible as conjunctions of Horn clauses. Each of the clausesin the formulas considered here has a unique unnegated variable that does not appear inany other clauses, and is not `F'. The revision algorithm uses equivalence …

Linear And Nonlinear Modeling Of Asperity Scale Frictional Melting In Brittle Fault Zones, Ravi V. S. Kanda

University of Kentucky Master's Theses

Study of pseudotachylytes (PT) (frictional melts) can provide information on the physical and chemical conditions at the earthquake source. This study examines the influence of asperityscale fault dynamics on asperity temperature distribution, and therefore, the potential for frictional melting to occur. Frictional melting occurs adiabatically, and is initiated between opposing asperity tips during fault slip. Our model considers 2-D heat conduction in elastic, isotropic, hemispherical asperities, with temperature dependent thermal properties. The only heat source is a point heat flux pulse at the asperity tip. The non-linear problem was solved using the -form of Newton-Kantorovich procedure coupled with the -form …

Design Of A Lorentz, Slotless Self-Bearing Motor For Space Applications, Barrett Alan Steele

University of Kentucky Master's Theses

The harsh conditions of space, the stringent requirements for orbiting devices, and the increasing precision pointing requirements of many space applications demand an actuator that can provide necessary force while using less space and power than its predecessors. Ideally, this actuator would be able to isolate vibrations and never fail due to mechanical wear, while pointing with unprecedented accuracy. This actuator has many space applications from satellite optical communications and satellite appendage positioning to orbiting telescopes. This thesis presents the method of design of such an actuator a self-bearing motor. The actuator uses Lorentz forces to generate both torque and …

Pattern Evaluation For In-Plane Displacement Measurement Of Thin Films, Phanikrishna Thota

University of Kentucky Master's Theses

The term Gossamer is used to describe ultra-lightweight spacecraft structures that solve the aerospace challenge of obtaining maximum performance while reducing the launch costs of the spacecraft. Gossamer structures are extremely compliant, which complicates control design and ground testing in full scale. One approach is to design and construct smaller test articles and verify their computational models experimentally, so that similar computational models can be used to predict the dynamic performance of full-scale structures. Though measurement of both in-plane and out-of-plane displacements is required to characterize the dynamic response of the surface of these structures, this thesis lays the groundwork …

Analysis And Application Of Capacitive Displacement Sensors To Curved Surfaces, Philip T. Smith Jr.

University of Kentucky Master's Theses

Capacitive displacement sensors have many applications where non-contact, high precision measurement of a surface is required. Because of their non-contact nature they can easily measure conductive surfaces that are flexible or otherwise unable to be measured using a contact probe. Since the output of the capacitance gage is electrical, data points can be collected quickly and averaged to improve statistics. It is often necessary for capacitive displacement sensors to gage the distance from a curved (non-flat) surface. Although displacements can easily be detected, the calibration of this output can vary considerably from the flat case. Since a capacitance gage is …

Study Of The "Poor Man's Navier-Stokes" Equation Turbulence Model, Stewart Andrew Bible

University of Kentucky Master's Theses

The work presented here is part of an ongoing effort to develop a highly accurate and numerically efficient turbulence simulation technique. The paper consists of four main parts, viz., the general discussion of the procedure known as Additive Turbulent Decomposition, the derivation of the "synthetic velocity" subgrid-scale model of the high wavenumber turbulent fluctuations necessary for its implementation, the numerical investigation of this model and a priori tests of said models physical validity. Through these investigations we have demonstrated that this procedure, coupled with the use of the "Poor Mans Navier-Stokes" equation subgrid-scale model, has the potential to be …

The Road To Vouchers: The Supreme Court's Compliance And The Crumbling Of The Wall Of Separation Between Church And State In American Education, Klint Alexander

Kentucky Law Journal

No abstract provided.

He Ii Reverberation In Active Galactic Nucleus Spectra, Mark C. Bottorff, Jack A. Baldwin, Gary J. Ferland, Jason W. Ferguson, Kirk T. Korista

Physics and Astronomy Faculty Publications

This paper compares the observed reverberation response lags and the intensity ratios of the broad-line region (BLR) emission lines He II λ1640, He II λ4686, and C IV λ1549 with predictions. Published observations indicate that the He II λ1640 lag is 3 times shorter than the lags of He II λ4686 or C IV λ1549. Diverse models, however, do not reproduce this observation. Extensive improved numerical simulations of the hydrogenic isoelectronic sequence emission show that the He II spectrum remains especially simple, even in the central regions of a luminous quasar. Line trapping never builds up a significant population of …