Digital Commons Network^™

Electron Bernstein Wave-X-O Mode Conversion And Electron Cyclotron Emission In Mast, Josef Preinhaelter, Pavol Pavlo, Vladimir Shevchenko, Martin Valovic, Linda L. Vahala, George Vahala

Electrical & Computer Engineering Faculty Publications

Electron cyclotron emission (ECE) from overdense plasmas can only occur due to electron Bernstein waves (EBW) mode converting near the upper hybrid region to an electromagnetic wave. Experimental data of ECE observations on MAST are studied and compared with EBW-X-O mode conversion modeling results.

Query-Based Learning For Aerospace Applications, Donald C. Wunsch, Emad W. Saad, J. J. Choi, J. L. Vian

Electrical and Computer Engineering Faculty Research & Creative Works

Models of real-world applications often include a large number of parameters with a wide dynamic range, which contributes to the difficulties of neural network training. Creating the training data set for such applications becomes costly, if not impossible. In order to overcome the challenge, one can employ an active learning technique known as query-based learning (QBL) to add performance-critical data to the training set during the learning phase, thereby efficiently improving the overall learning/generalization. The performance-critical data can be obtained using an inverse mapping called network inversion (discrete network inversion and continuous network inversion) followed by oracle query. This paper …

Optical Properties Of Materials For 157 Nm Lithography, Anatoly Bourov

Theses

A survey of optical properties of sputtered materials in the spectral range of 145 nm to 800 nm has been performed. The optical constants n and k have been measured using ellipsometric techniques. Four combination materials have been created with the properties suitable for application in Attenuated Phase Shift Mask (APSM) manufacturing. The four combination materials have also been characterized, with the results presented.

A Two-Step Approach Bayesian Network Model Selection, Michael John Kane

Theses

It is often desirable to show relationships between unstructured, potentially related data elements, or features, composing a knowledge database (KD). By understanding the interaction between these elements, we may gain insight into the underlying process from which the KD is derived, and as a result, we can often model the process. Bayesian Belief Networks (BBN) in particular, are adept at modeling knowledge databases for two reasons. The first is that BBNs give a structural representation of data elements through a directed acyclic graph (DAG). This ability may make BBNs invaluable in areas such as data mining, where statistical relationships between …

Minimum Inhibitory Concentrations Of Two Common Food Phenolic Compounds And Their Effect On The Microbial Ecology Of Swine Feces In Vitro, Jennifer I. Zaffarano

University of Kentucky Master's Theses

Feeding sub-therapeutic levels of antibiotics to livestock has been associated withdevelopment and spread of antibiotic resistant bacteria. The present experiment was conductedto investigate the effect of antibiotic alternatives (caffeic acid, chlorogenic acid, and carbadox)on the microbial ecology of swine feces in vitro.Minimum inhibitory concentrations of caffeic and chlorogenic acids were determined forseveral pathogens using macrobroth and agar dilution techniques. Gram-negative bacteria werenot inhibited. Caffeic acid inhibited four Staphylococcus aureus strains at 200 ppm or less, andtwo Clostridium perfringens strains at 300 ppm. Chlorogenic acid inhibited all S. aureus strainsat 500 ppm, and one C. perfringens strain at 400 ppm.Effects of …

Inhibitory Properties Of Microplitis Croceipes Teratocyte Secretory Products And The Recombinant Protein Tsp14 On Protein Synthesis, Francis Anthony Diluna

University of Kentucky Master's Theses

Microplitis croceipes is a solitary endoparasitic wasp that oviposits in the hemocoel of Heleothis virescens larvae. Upon parasitization, the host larvaes physiology is altered; resulting in a compromised immune system and a decrease in the production of some vital proteins resulting in a terminal post-wandering prepupal state. Teratocytes, cells derived from the extraembryonic serosa of the parasitic wasp, mimic symptoms of parasitization when injected into host larvae, independent of other factors like polydnavirus and venom. Some of the inhibition of protein synthesis can be attributed to proteins secreted by the teratocytes (teratocyte secretory proteins or TSP). A fraction of TSP …

Elk Calf Survival, Mortality, And Neonatal Habitat Use In Eastern Kentucky, Nathan W. Seward

University of Kentucky Master's Theses

I estimated survival, cause-specific mortality, and neonatal habitat use of elk (Cervus elaphus nelsoni) calves in eastern Kentucky. I also measured habitat characteristics of elk parturition sites and annual calf production . Radio-collared females were fitted with vaginal implant transmitters and monitored for parturition behavior to locate, capture, and radio-collar calves during the springs of 2001 and 2002. Thirty-seven adult females with implant transmitters were translocated from Logan, Utah, to Addington Wildlife Management Area (WMA) in eastern Kentucky. Additional females from previous releases during 1997 and 1998 were monitored for parturition behavior. Mean calf production for all females monitored (n=77) …

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 …

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 …

Understanding Ethnicity: The Relation Among Ethnic Identity, Collectivism, And Individualism In African Americans And European Americans, Ignacio David Acevedo

University of Kentucky Master's Theses

This study examined the relation among ethnic group membership, ethnic identity, collectivism and individualism in a sample of European American and African American college students. Findings suggest that African Americans are more collectivist than European Americans only in reference to their ethnic group. There were no significant differences between ethnic groups in collectivism toward friends, family, strangers or colleagues. Contrary to findings of previous research, there was no significant moderating effect of gender on collectivism differences between ethnic groups. In congruence with previous research, ethnic identity mediated the relation between ethnic group membership and collectivism toward the ethnic group. African …

Soil And Colloidal Phosphorus Dynamics In Three Ky Soils: Bioavailability, Transport And Water Quality Implications, Konstantinos Christos Makris

University of Kentucky Master's Theses

Particulate P constitutes a significant portion of the total P found in surface runoff water. Water dispersed P-containing particles can travel long distances via surface runoff and reach water bodies causing decrease in water quality. The main objective of the study was to evaluate the potential facilitation of P transport by the water dispersed soil colloids (WDC) using three KY soils with a long-term record of poultry manure, and fertilizer P applications. Sequential fractionation for both whole soils and colloidal samples revealed that the WDC had a greater total and labile P content than the soil as a whole. Also, …

Roadway Related Tort Liability And Risk Management: 5th Edition, Kenneth R. Agent, Daniel S. Turner

Kentucky Transportation Center Research Report

This training material has been prepared to address the tort liability problems faced by the Kentucky Transportation Cabinet and Kentucky local governments. The manual defines the problem by reviewing the national picture of generally growing numbers of suits and escalating financial losses from suits against highway agencies.

The manual also sets out solutions, and reviews actions, which can decrease the exposure of highway agencies to these suits. This risk management concept is emphasized throughout the manual.

Million City Traveling Salesman Problem Solution By Divide And Conquer Clustering With Adaptive Resonance Neural Networks, Samuel A. Mulder, Donald C. Wunsch

Electrical and Computer Engineering Faculty Research & Creative Works

The Traveling Salesman Problem (TSP) is a very hard optimization problem in the field of operations research. It has been shown to be NP-complete and is an often-used benchmark for new optimization techniques. One of the main challenges with this problem is that standard, non-AI heuristic approaches such as the Lin-Kernighan algorithm (LK) and the chained LK variant are currently very effective and in wide use for the common fully connected, Euclidean variant that is considered here. This paper presents an algorithm that uses adaptive resonance theory (ART) in combination with a variation of the Lin-Kernighan local optimization algorithm to …

Optimization Of An Automotive Generator Using Evolutionary Programming, A. Koenig, J. Williams, Steven Pekarek

Electrical and Computer Engineering Faculty Research & Creative Works

One of the primary design requirements of automotive generation systems is maximizing power density subject to the constraint of minimizing overall system cost. However, with progress made in reduction of automotive drive train noise, the torque ripple of the generator has been found to be a dominant noise source under idle conditions at high electrical load. Thus, an added design constraint is the minimization of torque ripple produced by the machine. in order to meet these objectives, numerical tools have been developed to automate the design process. a primary tool is an evolutionary algorithm that has been integrated within a …

Training Teachers To Meet The Developmentally Appropriate Needs Of Preschool Children, Sharon R. Brown

Abraham S. Fischler College of Education ETD Archive

Teachers were having great difficulty meeting the developmental needs of the children. This was evidenced by the teachers’ restriction of unstructured playtime, lack of interaction by the teachers with the children during outdoor play, and the children’s inability to engage in probing, exploratory dialogue.

The solution strategy combined a series of trainings for teachers to learn how to engage children actively in meaningful and age-appropriate learning activities to meet their developmental needs. There were two inservice trainings for the teachers. The topics of the trainings were The Use of Outdoor Space as a Learning Environment for Preschoool Children and How …

Development Of A Training Program On The Policies At Mohave Community College With A Plan For Evaluation, Susan Looney

Abraham S. Fischler College of Education ETD Archive

The purpose of this applied dissertation project was to develop a training program on the policies at Mohave Community College. In May, 2001, the Institute of Research at Mohave Community College created a survey to determine both the importance and understanding of college policies. The survey, which was distributed to all full-time and part-time faculty, as well as to staff members, indicated a gap between the importance of college policies and the understanding of college policies. Ultimately, the results of the survey indicated a need for training in the areas concerning the sexual harassment policy, copyright laws, the intellectual property …

Social Sector Participatory Development In Honduras: A Process Across Institutions, Culturesval And Continents, Denese Ashbaugh Vlosky

LSU Doctoral Dissertations

This research was conducted to determine whether our participatory process of curriculum development for vocational technical schools in Honduras was successful. This study analyzed program documents and correspondence to answer two questions: a) How did individual stakeholders perceive and negotiate the participatory process? and b) What factors --individual and environmental-- promoted and impeded the participatory process of development in this project? Participatory development concepts applied to Human Ecology Theory guided this research. Qualitative methodologies were utilized to develop the curriculum—Phenomenology-- and to evaluate the process of development—Grounded Theory and Matrix Analysis. An analysis of individual counterpart contacts revealed that stakeholder …

The Integration Of Si-Based Resonant Interband, Stephen Sudirgo

Theses

eports the first demonstration of the integration of CMOS and Si/SiGe resonant interband tunnel diode (RITD). In Si-based material, recent breakthrough in Si/SiGe RITD grown using molecular beam epitaxy (MBE) made the integration with CMOS possible. The resultant devices enabled the realization of RITD CMOS circuitry, and a NMOS-RITD MOBILE latch was demonstrated in Si, all enabling digital and ternary circuit design for density storage

Experimental Study Of Heat Transfer From A Moving And Evaporating Meniscus On A Heated Surface, Wai Keat Kuan

Theses

A stable meniscus is formed between a needle dispensing water over a heated circular face of a rotating copper block. The needle is offset from the axis of rotation and thus forms a moving meniscus. The water flow rate, heater surface temperature and the speed of rotation are controlled to provide a stable meniscus with complete evaporation of water without any meniscus break-up. The experimental heat transfer rate is compared with the transient heat conduction model. The results indicate that the transient heat conduction plays a major role in the heat transfer process from a moving meniscus. The study provides …

Photo Binge, Colette Fu

Theses

Not Included

The Natural Center, Brian Frus

Theses

Not Included

Energized Fluid Forms In Metal Work, Yoonjin Kim

Theses

Not listed.

Using Natural Language Parsers For Authorship Attribution, Westerly A D Magnera

Theses

The goal of authorship attribution is to find a set of unconscious writing characteristics or style features that distinguish text written by one person from text written by another. Once these features are found, they can be used to pair a text with the individual who wrote it. It is now well accepted that authors develop distinct and unconscious writing features. Over one thousand stylometric features (style markers) have been proposed in a variety of research disciplines [44] but none of that research has looked at the syntactic structure of the text. I conjectures that the distinct writing features of …

The Broadband Impact: Asymmetric Regulations Restrict Growth, Brent P. Thurn

Theses

Though the growth of broadband has increased dramatically in the last decade, asymmetric government regulations are impeding its continued growth. The Federal Communication Commission (FCC) has placed additional regulations on advanced telecommunications capability services (broadband). This report will show that asymmetric government regulations have limited the future growth of broadband by local exchange carriers (LECs1). Broadband technology has had a significant impact on today's Internet culture because it has changed the way that we work and use the Internet as a means for communicating. Most of the broadband regulations only apply to the telephone incumbents as compared to cable, satellite, …

Filter Selection For Spectral Estimation Using A Trichrmatic Camera, David C. Day

Theses

Current imaging practices are based on exploiting metamerism to record and reproduce images. As a result, the data obtained in these images are dependent on the viewing conditions and the observer. While these methods produce acceptable results for day to day use, they often do not exhibit the type of accuracy and control required for scientific purposes such as art conservation. As a solution, many research institutions are now advocating the use of multispectral imaging to record the objects fundamental spectral properties to remove the data's dependency on the observer and viewing environment. The research described in this thesis involved …

The Effects Of Multi-Channel Visible Spectrum Imaging On Perceived Spatial Image Quality And Color Reproduction Accuracy, Ellen A. Day

Theses

Two paired-comparison psychophysical experiments were performed. The stimuli consisted of six image types resultingfrom several multispectral image-capture and reconstruction techniques. A seventh image type, color-managed images from a high-end consumer camera, was also included in thefirst experiment to compare the accuracy of commercial RGB imaging. The images were evaluated under simulated daylight (6800K) and incandescent (2700K) illumination. The first experiment evaluated color reproduction accuracy. Under simulated daylight, the subjects judged all of the images to have the same color accuracy, except the consumer camera image which was significantly worse. Under incandescent illumination, all the images, including the consumer camera, had …

Image Processing Techniques To Separate Linear And Curvilinear Features In Textures, Bhavani Pidaparthi

Theses

Varied image processing techniques have been developed to extract or detect linear features from images. However, these techniques are targeted at extracting or detecting linear features, and it has been shown in an existing technique that the Fourier transform can be used in conjunction with the polar transformation to essentially lift or separate linear features from the background image. Extracting or detecting linear features in images involves locating these features in the image while separating or lifting them involves separating them from the background image such that we get two images: one image containing the linear features and the other …

Automatic Classification Of One-Dimensional Cellular Automata, Daniel R. Kunkle

Theses

Cellular automata, a class of discrete dynamical systems, show a wide range of dynamic behavior, some very complex despite the simplicity of the system's definition. This range of behavior can be organized into six classes, according to the Li-Packard system: null, fixed point, two-cycle, periodic, complex, and chaotic. An advanced method for automatically classifying cellular automata into these six classes is presented. Seven parameters were used for automatic classification, six from existing literature and one newly presented. These seven parameters were used in conjunction with neural networks to automatically classify an average of 98.3% of elementary cellular automata and 93.9% …

Near-Lossless Bitonal Image Compression System, Jeremy Pyle

Theses

The main purpose of this thesis is to develop an efficient near-lossless bitonal compression algorithm and to implement that algorithm on a hardware platform. The current methods for compression of bitonal images include the JBIG and JBIG2 algorithms, however both JBIG and JBIG2 have their disadvantages. Both of these algorithms are covered by patents filed by IBM, making them costly to implement commercially. Also, JBIG only provides means for lossless compression while JBIG2 provides lossy methods only for document-type images. For these reasons a new method for introducing loss and controlling this loss to sustain quality is developed. The lossless …

Cultural Sensitivity In Visual Communication, Yih-Chi Wang

Theses

Not Included