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Multivariate List Decoding Of Evaluation Codes With A Gröbner Basis Perspective, Philip Busse

University of Kentucky Doctoral Dissertations

Please download dissertation to view abstract.

Multiple Channel Coherent Amplitude Modulated (Am) Time Division Multiplexing (Tdm) Software Defined Radio (Sdr) Receiver, Veerendra Bhargav Alluri

University of Kentucky Master's Theses

It is often required in communication and navigation systems to be able to receive signals from multiple stations simultaneously. A common practice to do this is to use multiple hardware resources; a different set of resources for each station. In this thesis, a Coherent Amplitude Modulated (AM) receiver system was developed based on Software Defined Radio (SDR) technology enabling reception of multiple signals using hardware resources needed only for one station. The receiver system architecture employs Time Division Multiplexing (TDM) to share the single hardware resource among multiple streams of data. The architecture is designed so that it can be …

Parametrization And Shape Reconstruction Techniques For Doo-Sabin Subdivision Surfaces, Jiaxi Wang

University of Kentucky Master's Theses

This thesis presents a new technique for the reconstruction of a smooth surface from a set of 3D data points. The reconstructed surface is represented by an everywhere -continuous subdivision surface which interpolates all the given data points. And the topological structure of the reconstructed surface is exactly the same as that of the data points. The new technique consists of two major steps. First, use an efficient surface reconstruction method to produce a polyhedral approximation to the given data points. Second, construct a Doo-Sabin subdivision surface that smoothly passes through all the data points in the given data set. …

Adaptive, Multi-Objective Job Shop Scheduling Using Genetic Algorithms, Haritha Metta

University of Kentucky Master's Theses

This research proposes a method to solve the adaptive, multi-objective job shop scheduling problem. Adaptive scheduling is necessary to deal with internal and external disruptions faced in real life manufacturing environments. Minimizing the mean tardiness for jobs to effectively meet customer due date requirements and minimizing mean flow time to reduce the lead time jobs spend in the system are optimized simultaneously. An asexual reproduction genetic algorithm with multiple mutation strategies is developed to solve the multi-objective optimization problem. The model is tested for single day and multi-day adaptive scheduling. Results are compared with those available in the literature for …

Phylogenetic Methods For Testing Significant Codivergence Between Host Species And Their Symbionts, Skyler Speakman

University of Kentucky Master's Theses

Significant phylogenetic codivergence between plant or animal hosts (H) and their symbionts or parasites (P) indicate the importance of their interactions on evolutionary time scales. However, valid and realistic methods to test for codivergence are not fully developed. One of the systems where possible codivergence has been of interest involves the large subfamily of temperate grasses (Pooideae) and their endophytic fungi (epichloae). Here we introduce the MRCALink (most-recent-common-ancestor link) method and use it to investigate the possibility of grass-epichloё codivergence. MRCALink applied to ultrametric H and P trees identifies all corresponding nodes for pairwise comparisons of …

Assessment Of Terrain Attribute Models For The Identification Of Erosion Prone Areas Suitable For The Establishment Of Grassed Waterways In An Agricultural Field Setting In The Out Bluegrass Region Of Kentucky, Adam Clellon Pike

University of Kentucky Master's Theses

The speed and accuracy of conservation planning could be improved if maps indicating areas where grassed waterways should be placed to reduce erosion could be easily created. For five central Kentucky fields, elevation data were obtained with real time kinematic (RTK) global positioning system (GPS) and from US Geological Survey (USGS) digital elevation models (DEMs). Terrain attributes were calculated from these datasets which were used as predictor variables for neural network and logistic regression analyses. Grassed waterway prediction models were developed with these analyses. The type of activation function, type of standardization procedure, number of neurons, number of preliminary runs, …

Syntheses, Structures And Magnetic Characterization Of Di- And Trivalent Hydridotris(3,5-Dimethylpyrazol-1-Yl)Borate Cyanomanganates, Minao Tang

University of Kentucky Master's Theses

The syntheses, structures, and magnetic properties of a series of di/trivalent hydridotris(3,5-dimethylpyrazol-1-yl)borate (Tp*) cyanomanganates were investigated. Treatment of manganese(III)acetylacetonate with KTp* followed by tetra(ethyl)- ammonium cyanide affords [NEt₄][(Tp*)Mn^II(acac)(CN)] (1). Attempts to oxidize 1 with iodine affords {(Tp*)Mn^II(κ²O-acac-CN)}_n (7); a minor complex {[NEt₄][(Tp*)Mn^II(κ²O-acac-3-CN)]₂(µ-CN) (8) was also isolated.

The manganese(II) complex [NEt₄][(Tp*)Mn^II(κ²O-acac-3-CN)(κ¹N -3-NC-acac)] (2) was obtained via treatment of Mn(3-acacCN)₃ with KTp* and [NEt₄]CN. [NEt₄]₂[Mn …

Quantifying Cellulase In High-Solids Environments, Alicia Renée Abadie

University of Kentucky Master's Theses

In recent years, fungal and bacterial cellulases have gained popularity for the conversion of lignocellulosic material to biofuels and biochemicals. This study investigated properties of fungal (Trichoderma. reesei) and bacterial (Clostridium thermocellum) cellulases. Enzymatic hydrolysis was carried out with T. reesei using nine enzyme concentration and substrate combinations. Initial rates and extents of hydrolysis were determined from the progress curve of each combination. Inhibition occurred at the higher enzyme concentrations and higher solids concentrations. Mechanisms to explain the observed inhibition are discussed. Samples of C. thermocellum purified free cellulase after 98% hydrolysis were assayed to determine …

An Evaluation Of Earthquake Ground-Motion Site Effects At Two Sites Underlain By Deep Soils In Western Kentucky, Jonathan Larry Mcintyre

University of Kentucky Master's Theses

Six earthquake acceleration time histories were used to evaluate the groundmotion response of two sites, VSAP and VSAS, near the New Madrid Seismic Zone. These earthquakes ranged in magnitude from M_w 3.6 to M_w 5.2 and were located 46 to 173 km away from the recording instruments. These two sites are underlain by thick sequences (100 and 590 m) of unlithified soil that have been shown to greatly influence earthquake ground motions.

Near-surface soil dynamic properties were characterized at the two sites using seismic SH-wave refraction, P-S suspension logging, borehole electrical logs, and geotechnical logging methods. The soil …

Subsurface Characterization And Seuqence Stratigraphy Of Late Mississippian Strata In The Black Warrior Basin, Alabama And Mississippi, Carrie A. Kidd

University of Kentucky Master's Theses

A depositional framework for the Mississippian (Chesterian) Pride Mountain Formation/Hartselle Sandstone clastic tongue and the lower Bangor Limestone carbonate ramp in the Black Warrior basin, Mississippi and Alabama, is constructed from approximately 250 geophysical well logs, 15 well cuttings descriptions, and outcrop data. The framework is based upon cross sections, isopach maps, and transgressive-regressive sequence stratigraphy.

The Lowndes-Pickens synsedimentary fault block controlled sediment dispersal in during Pride Mountain/Hartselle deposition. The basin filled from the southwest, which pushed the depocenter northeastward during Hartselle deposition. The Hartselle sub-basin is composed of the Hartselle barrier-island and back-barrier deposits to the southwest, including the …

Thermal Degradation And Aging Of High Temperature Piezoelectric Ceramics, Sunil W. Gotmare

University of Kentucky Master's Theses

Piezoelectric materials have numerous applications like high temperature accelerometers, pressure, flow and NDT transducers, acoustic emission, ultrasonic cleaning, welding, high voltage generators, medical therapy etc. The commonly used piezoelectric material, PZT continues to dominate the commercial market for piezoelectric actuators applications. The primary limitations of PZT are the lower Curie temperature T_C <390^oC and rapid thermal degradation avobe 200^oC.

Continuing efforts are focused on the development of piezoelectric materials suitable for high temperature applications >200^oC. These materials will be very useful for making sensors for space exploration, oil and geothermal well drilling tools, oil …

Performance Optimization Of A Structured Cfd Code - Ghost On Commodity Cluster Architectures, Pavan K. Kristipati

University of Kentucky Master's Theses

This thesis focuses on optimizing the performance of an in-house, structured, 2D CFD code – GHOST, on commodity cluster architectures. The basic philosophy of the work is to optimize the cache usage of the code by implementing efficient coding techniques without changing the underlying numerical algorithm. Various optimization techniques that were implemented and the resulting changes in performance have been presented. Two techniques, external and internal blocking that were implemented earlier to tune the performance of this code have been reviewed. What follows is further tuning effort in order to circumvent the problems associated with using the blocking techniques. Later, …

Elastic-Plastic Indentation Deformation In Homogeneous And Layered Materials: Finite Element Analysis, Siva Naga Venkata Ravi Kiran Kurapati

University of Kentucky Master's Theses

The complex phenomenon of indentation deformation is studied using finite element analysis for both homogeneous and layered materials. For the homogeneous materials, the elastic-plastic deformation at large indentation depth is studied. The variation of the load-displacement curves as well as the variation of the energy ratio with the applied indentation depth for different strain hardening indices is presented. The power law relation between the indentation load and depth for shallow indentation becomes invalid for deep indentation. The ratio of plastic energy to total mechanical work is a linear function of the ratio of residual indentation depth and maximum indentation depth. …

Merged Ionization/Dissociation Fronts In Planetary Nebulae, William J. Henney, R. J. R. Williams, Gary J. Ferland, Gargi Shaw, C. R. O'Dell

Physics and Astronomy Faculty Publications

The hydrogen ionization and dissociation front around an ultraviolet radiation source should merge when the ratio of ionizing photon flux to gas density is sufficiently low and the spectrum is sufficiently hard. This regime is particularly relevant to the molecular knots that are commonly found in evolved planetary nebulae, such as the Helix Nebula, where traditional models of photodissociation regions have proved unable to explain the high observed luminosity in H₂ lines. In this paper we present results for the structure and steady state dynamics of such advection-dominated merged fronts, calculated using the Cloudy plasma/molecular physics code. We find …

Spitzer Irs Observations Of Seyfert 1.8 And 1.9 Galaxies: A Comparison With Seyfert 1 And Seyfert 2, R. P. Deo, D. M. Crenshaw, S. B. Kraemer, M. Dietrich, Moshe Elitzur, H. Teplitz, T. J. Turner

Physics and Astronomy Faculty Publications

We present Spitzer mid-infrared spectra of 12 Seyfert 1.8 and 1.9 galaxies over the 5-38 μm region. We compare the spectral characteristics of this sample to those of 58 Seyfert 1 and 2 galaxies from the Spitzer archives. An analysis of the spectral shapes, the silicate 10 μm feature and the emission-line fluxes have enabled us to characterize the mid-IR properties of Seyfert 1.8/1.9s. We find that the EWs of the 10 μm silicate feature are generally weak in all Seyfert galaxies, as previously reported by several studies. The few Seyfert galaxies in this sample that show …

Membranous Dysmenorrhea: A Case Series, Hatim A. Omar, Shawn J. Smith

Pediatrics Faculty Publications

The purpose was to illustrate the variability of hormonal contraception of patients that presented with membranous dysmenorrheal. A case analysis chart review was completed on six patients referred to a Pediatric Gynecologist in an academic setting. In each case the patient underwent a thorough pelvic and bimanual exam. Following the initial presentation, each patient continued to be followed on a regular visits. Cases: Two were using the transdermal contraceptive patch and oral contraceptive, but following the expulsion of decidual cast, they were both placed on depot medroxyprogesterone acetate (DMPA) without further complications. Three of the six cases were on DMPA …

Nonsexual Transmission Of Anogenital Warts In Children: A Retrospective Analysis, Valerie Jones, Shawn J. Smith, Hatim A. Omar

Pediatrics Faculty Publications

The purpose was to evaluate the prevalence of sexual abuse in patients who were referred to a pediatric gynecologist for evaluation based on the clinical findings of anogenital warts. A retrospective analysis was performed on 131 patients between the ages 6 month and 9 years referred to a pediatric gynecologist after the finding of anogenital warts by a clinical provider, parent or caregiver. A complete physical examination under colposcopy by a the same, trained pediatric gynecologist was completed, and a complete medical and family history including maternal and sibling history for evidence of Human Papillomavirus (HPV) and anogenital warts. The …

Resilient Modulus Of Compacted Crushed Stone Aggregate Bases, Tommy C. Hopkins, Tony L. Beckham, Charlie Sun

Kentucky Transportation Center Research Report

In recent years, the American Association of State Highway Transportation Officials (AASHTO) has recommended the use of resilient modulus for characterizing highway materials for pavement design. This recommendation evolved as result of a trend in pavement design of using mechanistic models. Although much progress has been made in recent years in developing mathematical, mechanistic pavement design models, results obtained from those models are only as good as the material parameters used in the models. Resilient modulus of aggregate bases is an important parameter in the mechanistic models. The main goal of this study was to establish a simple and efficient …

Forage Spokesman Information, Lowell J. Clifford, Barry Drury, John Mcglone, Mac Stone

Kentucky Grazing Conference

No abstract provided.

Techniques For Reducing Mud Problems And Improving Pasture Abused Areas, Ken Johnson

Kentucky Grazing Conference

I would like to approach this topic from two directions, mud control and then problem areas. Mud control in concentrated areas almost impossible with forages alone. Using a mud control product is usually advised. I will talk about several.

My Experiences With Summer Lovegrass, Tim Phillips

Kentucky Grazing Conference

I first heard about teff (Eragrostis tef) being used as a hay crop in early 2006 at a meeting near the Shenandoah Valley area of Virginia. The meeting was about orchardgrass production, so I was speaking about new varieties that are available for producers to grow. Several farmers had experienced massive stand losses of their established orchardgrass hay fields, so they had tried this ‘new’ summer annual grass. Some of the farmers were surprised that I knew about this grass, but I didn’t know about its use as a hay or pasture grass. Teff is the Ethiopian name for a …

Experiences With "Teff" (Summer Love Grass) In Kentucky, Bob Jaynes

Kentucky Grazing Conference

Following publicity about the Klamath Experiment Station evaluation of Teff as an annual forage in 2003 and 2004, requests for more information and seed sources kept KES staff busy for weeks last spring. We received over 300 contacts from 41 states. Local seed salesman Laverne Hankins processed over 150 orders for more than 5 tons of seed. Those who received seed were sent a questionnaire this fall in hopes that we would get feedback on growers experience with this new forage species. To date we have received responses from about 15 growers.

Options For Summer Grazing, David C. Ditsch

Kentucky Grazing Conference

Summer is the time during the growing season when shortages of forage most often occur in Kentucky. The summer of 2007 will long be remembered as one the warmest and driest in recent years and cause many livestock producers to evaluate their current forage systems. Most Kentucky pastures are predominately cool-season grasses such as tall fescue, orchardgrass and bluegrass. During the historically hot, dry periods in July and August, these species produce very little growth and can quickly become overgrazed. At this point, some producers have no alternative except to buy feed or begin feeding stored forage intended for winter …

Does Grazing Method Matter?, Garry D. Lacefield

Kentucky Grazing Conference

Interest in and opportunities for grazing continues to increase not only in Kentucky, but throughout the U.S. In Wisconsin, 12% or approximately 5000 dairymen are now using grazing. In Michigan, over 40% of the dairymen are using grazing for a significant part of their feed requirements. Over 15% of these dairymen are using intensive grazing. Similar numbers exist for Pennsylvania.

Surviving The 2007 Drought, Roy Burris

Kentucky Grazing Conference

Kentucky beef producers could feel the effects of the ’07 drought for a long time. Decisions made now will impact the ’08 and ’09 calf crops. The current hay/feed shortage has stimulated a lot of “panic buying”. Feedstuffs with very low nutritive values are being purchased at an alarming rate. These “feeds” are being purchased at much higher costs than we normally pay for good quality hay. If properly supplemented, they can be used successfully. However, their use to replace the normal hay supply could have disastrous results.

Recovering From The "Freeze" And "Drought" Of 2007, S. Ray Smith

Kentucky Grazing Conference

As all of you know, 2007 has been a devastating year for forage agriculture in Kentucky. The season started with an abnormally warm 7 weeks during late winter and early spring, which promoted lush vegetative growth. Normally this would have been a “good thing”, but it actually made forage plants more vulnerable to below freezing temperatures. Then the severe freeze occurred, with April 7, 8, and 9 the coldest 3 day period in April in KY history. Pastures were stunted for weeks and first cut hay yields were reduced by 35 to 100%. At this point we were still hopeful …

Foreword And Kfgc Award Winners [2007], Garry D. Lacefield, Christi L. Forsythe

Kentucky Grazing Conference

No abstract provided.

A Simple Array Platform For Microrna Analysis And Its Application In Mouse Tissues, Xiaoqing Tang, Jozsef Gal, Xun Zhuang, Wang-Xia Wang, Haining Zhu, Guiliang Tang

Plant and Soil Sciences Faculty Publications

MicroRNAs (miRNAs) are a novel class of small noncoding RNAs that regulate gene expression at the post-transcriptional level and play a critical role in many important biological processes. Most miRNAs are conserved between humans and mice, which makes it possible to analyze their expressions with a set of selected array probes. Here, we report a simple array platform that can detect 553 nonredundant miRNAs encompassing the entire set of miRNAs for humans and mice. The platform features carefully selected and designed probes with optimized hybridization parameters. Potential cross-reaction between mature miRNAs and their precursors was investigated. The array platform was …

Suppression Of Peroxisomal Enzyme Activities And Cytochrome P450 4a Isozyme Expression By Congeneric Polybrominated And Polychlorinated Biphenyls, Larry W. Robertson, Isabelle Berberian, Tim Borges, Li-Chuan Chen, Ching K. Chow, Howard P. Glauert, Johannes G. Filser, Helmut Thomas

Toxicology and Cancer Biology Faculty Publications

The purpose of this study was to determine the effects of PCBs and PBBs on peroxisome proliferator-activated receptor-alpha-(PPARalpha-) associated enzyme activities or protein levels. Male Sprague-Dawley rats were administered a single IP injection (150 mu mol/kg) of either 3,3',4,4'-tetrabromobiphenyl, 3,3',4,4'-tetrachlorobiphenyl, 3,3',5,5'-tetrabromobiphenyl, 2',3,3',4,5-pentachlorobiphenyl, 3,3',4,4',5-pentachlorobiphenyl, 2,2',3,3',5,5'-hexachlorobiphenyl, or 3,3',4,4',5,5'-hexabromobiphenyl in corn oil (10 ml/kg). One week later, the activities of catalase, peroxisomal fatty acyl-CoA oxidase, and peroxisomal beta-oxidation as well as cytochrome P450 4A (CYP4A) protein content were determined in subcellular liver fractions. None of the peroxisomal enzyme activities were significantly increased by any of the halogenated biphenyl congeners tested. Except for minor …

The Agn-Obscuring Torus: The End Of The "Doughnut" Paradigm?, Moshe Elitzur, Isaac Shlosman

Physics and Astronomy Faculty Publications

Unified schemes of active galactic nuclei (AGNs) require an obscuring dusty torus around the central engine. The compact sizes (only a few parsecs) determined in recent high-resolution observations require that the obscuring matter be clumpy and located inside the region where the black hole gravity dominates over the galactic bulge. This location is in line with the scenario depicting the torus as the region of the clumpy wind coming off the accretion disk in which the clouds are dusty and optically thick. We study here the outflow scenario within the framework of hydromagnetic disk winds, incorporating the cloud properties determined …