Physical Sciences and Mathematics Commons^™

Surface Layer Thickness And Velocity Determined Using The Multi Channel Analysis Of Surface Waves (Masw) Method Compared With Microtremor Resonance Analysis-Federal Road, Greene County, Ohio, Daniel R. Blake

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Multi-Channel Analysis of Surface Waves (MASW) was performed on data collected at four locations previously occupied by 3-component broadband seismometers. The goal was to use MASW to define the velocity structure and depth to bedrock locally, and to examine how well the calculated surface layer resonance derived from this velocity structure compares with the surface layer resonance observed in the passive seismic data at that site. At the test site east of Xenia, Ohio, a clear change in lithology (glacial drift to limestone bedrock) on each of the 1-D MASW profiles is indicated by a substantial change in shear-wave velocity …

Optimization Of Spectrum Allocation In Cognitive Radio And Dynamic Spectrum Access Networks, Tao Zhang

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Spectrum has become a treasured commodity. However, many licensed frequency bands exclusively assigned to the primary license holders (also called primary users) remain relatively unused or under-utilized for most of the time. Allowing other users (also called secondary users) without a license to operate in these bands with no interference becomes a promising way to satisfy the fast growing needs for frequency spectrum resources. A cognitive radio adapts to the environment it operates in by sensing the spectrum and quickly decides on appropriate frequency bands and transmission parameters to use in order to achieve certain performance goals. One of the …

Normal Fault Trace-Length Scaling In A Tectonic Transition Zone In Southern Sedna Planitia, Venus, Andrew W. Lyda

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In this study, fault trace-lengths of normal faults are measured in southern Sedna Planitia, Venus between 27° to 32° latitude and 336° to 343° longitude where smooth, lowland plains transition into highland regions which are broken by basin and range style tectonics. The fault trace-lengths are plotted on a cumulative number verses length plot (CNL) and fit with a power function, exponential function, and logarithmic function to determine which function best describes the trace-length distribution. A power function is the best fit with a scaling exponent of 1.73. This result is compared to previous studies of fault trace-lengths on Venus, …

Developing A Semantic Web Crawler To Locate Owl Documents, Ronald Dean Koron

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The terms Semantic Web and OWL are relatively new and growing concepts in the World Wide Web. Because these concepts are so new there are relatively few applications and/or tools for utilizing the potential power of this new concept. Although there are many components to the Semantic Web, this thesis will focus on the research question, "How do we go about developing a web crawler for the Semantic Web that locates and retrieves OWL documents." Specifically for this thesis, we hypothesize that by giving URIs to OWL documents, including all URIs from within these OWL documents, priority over other types …

Comparing Us And Chinese High-School Physics Teaching In Terms Of The Use Of Inquiry, Lingbo Qian

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Inquiry based teaching has been widespread in the United States as well as in China in the last two decades. It was implemented by many teachers and shown to be effective in both countries. This study examines the extent to which inquiry-based teaching in high-school physics is practiced in US and China through the use of lesson observations and a survey. Nineteen lessons taught by 19 teachers (9 US and 10 Chinese) were observed (N=19). Results show that both US and Chinese teachers know well about the inquiry-based teaching. However, in practice, little inquiry-based teaching was observed in the two …

Impacts Of Land Use/Land Cover And Soil On Water Quality In The Upper Little Miami River Sub-Basin, Devendra Kumar Akshaya

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The Little Miami River Basin (LMRB) is increasingly becoming susceptible to the degradation of water quality due to various factors such as increase in urban landscape and agricultural runoff. This study is about understanding the impact of land use/land cover (LULC) and soil on water quality in LMRB. It was assumed that the major sources of solutes in the river mainly originated from the leaching of the land by precipitation and the composition of the leachate is influenced by the type LULC and soil. Least square method was modified to estimate the production coefficient for each of the types of …

Radio-Frequency Heating Of Magnetic Nanoparticles, Mohammud Zafrullah Jagoo

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In the present study, a power supply capable of converting a direct current into an alternating current was built. The frequency of oscillation of the output current could be varied from 174.8 kHz to 726.0 kHz by setting a set of capacitors in resonance. To this power supply is attached a 20-turns copper coil in the shape of a spiral. Because of the high heat generated in the coil, the latter has to be permanently water-cooled. A vacuum pump removes the air between the sample holder and the coil. A fiber optic temperature sensor with an accuracy of 0.001 K …

Knn-R: Building Secure And Efficient Outsourced Knn Query Service With The Rasp Encryption, Huiqi Xu

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With the wide deployment of public cloud computing infrastructures, outsourcing database services to the cloud has become an appealing solution to save operating expense. However, some databases might be so sensitive or precious that the data owner does not want to move to the cloud unless the security is guaranteed. On the other hand, a secure outsourced service should still provide efficient query processing and significantly reduce the inhouse workload to fully realize the benefits of outsourcing. We summarize these key features for an outsourced service as the CPEL criteria: data Confidentiality, query Privacy, Efficient query processing, and Low inhouse …

The Mechanisms Of Luminescence From Zno Under Electron Irradiation, Devin Marlinjames Todd

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Zinc Oxide has been utilized for centuries in a wide range of applications including medical, food, and materials. It is now that ZnO draws much attention to its potential as a high frequency semiconductor and UV laser. As a result, there has been much investigation into the properties of ZnO and many papers have been published in the area. Despite this fact, there is still much that is unknown about its electronic defect structure. This research investigates the broad region of the Zinc Oxide luminescence spectrum known as the green band, which lies roughly between 480 - 580 nm or …

Near Single-Molecule Sers-Based Detection Using Ultrafiltered, Unfunctionalized Silver Nanoparticles, Joshua Dale Baker

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Silver nanoparticles (AgNPs) are currently widely-used in consumer products, therapeutics, biomedical devices, and electronics. Yet, one application for which AgNPs have been used extensively is surface-enhanced Raman spectroscopy (SERS)-based sensing. However, AgNP size and aggregation state are known to greatly influence these applications. This works aimed 1) to synthesize a large volume of unfunctionalized, Creighton AgNPs, to characterize their chemical and physical properties, 2) then to size-select AgNPs of 1-50 nm and 50-100 nm in diameter and to concentrate them using a three-step, "green" tangential flow ultrafiltration (TFU) process. 3) Finally, to determine and compare the SERS-based sensing capabilities of …

Linked Open Data Alignment & Querying, Prateek Jain

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The recent emergence of the "Linked Data" approach for publishing data represents a major step forward in realizing the original vision of a web that can "understand and satisfy the requests of people and machines to use the web content" i.e. the Semantic Web. This new approach has resulted in the Linked Open Data (LOD) Cloud, which includes more than 295 large datasets contributed by experts belonging to diverse communities such as geography, entertainment, and life sciences. However, the current interlinks between datasets in the LOD Cloud, as we will illustrate,are too shallow to realize much of the benefits promised. …

On The Quantization Problem In Curved Space, Benjamin Bernard

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The nonrelativistic quantum mechanics of particles constrained to curved surfaces is studied. There is open debate as to which of several approaches is the correct one. After a review of existing literature and the required mathematics, three approaches are studied and applied to a sphere, spheroid, and triaxial ellipsoid.

The first approach uses differential geometry to reduce the problem from a three dimensional problem to a two-dimensional problem. The second approach uses three dimensions and holds one of the separated wavefunctions and its associated coordinate constant. A third approach constrains the particle in a three-dimensional space between two parallel surfaces …

Friedel-Crafts Acylation Studies On 3-Alkyl-1-(Phenylsulfonyl)Indoles Using Aluminum Chloride And Bismuth Triflate, Venkateswara Reddy Karrepu

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Using the traditional catalyst, aluminum chloride in stoichiometric amounts, 3-alkyl-1-(phenylsulfonyl)indoles can be regioselectively acylated under Friedel-Crafts conditions at the C-6 position along with 10% of a minor isomer at the C-5 position. Alternatively, using catalytic amounts of the green catalyst, bismuth triflate, C-2 acylation was observed. Therefore, regioselectivity can be controlled by the nature of the Lewis acid catalyst. Moreover, this is the first-time that Friedel-Crafts acylation studies were demonstrated upon 3-alkyl-1-(phenylsulfonyl)indoles.

Relationship Between Log Permeability And Fraction Of Finer Grains In Bimodal Sediment Mixtures, Steven M. Verdibello

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In sediment mixtures of two grain-size components, the mixture porosity (Φ) and permeability (k) both vary non-linearly as a function of the grain size and the volume fraction of each component. A porosity minimum (Φmin) occurs near the mixture fraction at which the volume of the finer grains equals the original pore volume of the coarser grains. An abrupt change in slope has been observed in the non-linear relationship between log(k) and the volume fraction of finer grains (rf). This slope change should occur at the rf where coarser pore pathways change from continuous to discontinuous. In this study, fine …

The Influence Of Streambed Heterogeneity On Hyporheic Exchange In Gravelly Rivers, Yaoquan Zhou

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Hyporheic exchange can be influenced by channel meanders, by streambed topography, and by the heterogeneity within subsurface sediments. Fluvial systems with streambed sediments composed of sandy gravel can be heterogeneous and contain open-framework gravel stratasets that comprise roughly one-third of the sedimentary deposit by volume. The open-framework gravel stratasets have an average lateral length scale on the order of 10 m, average thickness on the order of a decimeter, and an average dip on the order of 10 degrees downstream. The hydraulic conductivity of open-framework gravel stratasets is on the order of 10-1 m/s, and for the larger volume of …

A Hardware Compact Genetic Algorithm For Hover Improvement In An Insect-Scale Flapping-Wing Micro Air Vehicle, Kathleen M. Timmerman

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Wing and airframe damage to insect scale micro air vehicles potentially cause significant losses in pose and position control precision. Although one can imagine many possible means of adapting the flight controllers to restore precise pose and position control, severe limits on computational resources available on-board an insect sized vehicle render many of them impractical. Additionally, limits on sensory capability degrade any such vehicle's ability to critique its own performance. Any adaptive solutions one would propose to recover flight trajectory precision, therefore, would require a resource light implementation, preferably without need for relatively expensive floating-point operations, along with the capability …

Among-Locus Heterogeneity In Genetic Diversity And Divergence In Two Pairs Of Duck Species (Genus: Anas), Kirandeep K. Dhami

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Genetic diversity and divergence at a locus are the result of interactions among the fundamental evolutionary forces of mutation, genetic drift, gene flow and natural selection. Variation in the strength of these forces can cause high heterogeneity in diversity and divergence across the genome. The overall objective of this thesis was to examine the role of population history vs. selection in generating heterogeneity in genetic diversity and differentiation. In Chapter 1, I examine the role of dispersal behavior in causing genetic differentiation and population structure within and between two morphologically distinct Australian duck species that differ in ecology and life …

Knowledge Acquisition In A System, Christopher J. Thomas

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I present a method for growing the amount of knowledge available on the Web using a hermeneutic method that involves background knowledge, Information Extraction techniques and validation through discourse and use of the extracted information.

I present the metaphor of the "Circle of Knowledge on the Web". In this context, knowledge acquisition on the web is seen as analogous to the way scientific disciplines gradually increase the knowledge available in their field.

Here, formal models of interest domains are created automatically or manually and then validated by implicit and explicit validation methods before the statements in the created models can …

Factors Controlling Nickel Bioavailability And Effects On Benthic Invertebrates In Hardwater Freshwater Streams, Kevin Wayne Custer

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Sediments in aquatic ecosystems function ecologically as habitat, food, and refugia that aid in reproduction processes, and chemically as sources and sinks for contaminants. Sediment contamination from metals and organics has been linked to numerous health and ecological effects, extending from fish consumption advisories to endangered species listings. This dissertation research examines Ni bioavailability (simultaneously extracted metal (SEM)/acid volatile sulfide (AVS) models) and toxicity in five separate studies using Ni-spiked sediments in a variety of designs, and mainly with two different sediment types (low AVS, total organic carbon (TOC), and high AVS, TOC).

Two separate streamside mesocosm Ni experiments indicated …

Computing Inconsistency Measure Based On Paraconsistent Semantics, Pascal Hitzler, Yue Ma, Guilin Qi

Computer Science and Engineering Faculty Publications

Measuring inconsistency in knowledge bases has been recognized as an important problem in several research areas. Many methods have been proposed to solve this problem and a main class of them is based on some kind of paraconsistent semantics. However, existing methods suffer from two limitations: (i) they are mostly restricted to propositional knowledge bases; (ii) very few of them discuss computational aspects of computing inconsistency measures. In this article, we try to solve these two limitations by exploring algorithms for computing an inconsistency measure of first-order knowledge bases. After introducing a four-valued semantics for first-order logic, we define an …

Overview Of Contrast Data Mining As A Field And Preview Of An Upcoming Book, Guozhu Dong, James Bailey

Kno.e.sis Publications

This report provides an overview of the field of contrast data mining and its applications, and offers a preview of an upcoming book on the topic. The importance of contrasting is discussed and a brief survey is given covering the following topics: general definitions and terminology for contrast patterns, representative contrast pattern mining algorithms, applications of contrast mining for fundamental data mining tasks such as classification and clustering, applications of contrast mining in bioinformatics, medicine, blog analysis, image analysis and subgroup mining, results on contrast based dataset similarity measure, and on analyzing item interaction in contrast patterns, and open research …

Transition From Static To Dynamic Macroscopic Friction In The Framework Of The Frenkel-Kontorova Model, Naum I. Gershenzon, Gust Bambakidis

Physics Faculty Publications

A new generation of experiments on dry macroscopic friction has revealed that the transition from static to dynamic friction is essentially a spatially and temporally non-uniform process, initiated by a rupture-like detachment front. We show the suitability of the Frenkel-Kontorova model for describing this transition. The model predicts the existence of two types of detachment fronts, explaining both the variability and abrupt change of velocity observed in experiments. The quantitative relation obtained between the velocity of the detachment front and the ratio of shear to normal stress is consistent with experiments. The model provides a functional dependence between slip velocity …

Configuration As A Source Of Information, Joseph W. Houpt, Robert D. Hawkins, Ami Eidels, James T. Townsend, Michael J. Wenger

Joseph W. Houpt

No abstract provided.

Configuration As A Source Of Information, Joseph W. Houpt, Robert D. Hawkins, Ami Eidels, James T. Townsend, Michael J. Wenger

Psychology Faculty Publications

No abstract provided.

Fundamental Properties Of Simple Emergent Feature Processing, Robert D. Hawkins, Joseph W. Houpt, Ami Eidels, James T. Townsend, Michael J. Wenger

Joseph W. Houpt

No abstract provided.

Fundamental Properties Of Simple Emergent Feature Processing, Robert D. Hawkins, Joseph W. Houpt, Ami Eidels, James T. Townsend, Michael J. Wenger

Psychology Faculty Publications

No abstract provided.

Terahertz Spectroscopic Reflection And Scattering Measurements Of Aligned Cnt Arrays As A Function Of Carbon Nanotube Length, Satya Ganti, Lindsay Owens, Stanley Smith Iv, Jason A. Deibel

Physics Faculty Publications

No abstract provided.

Crucible Coating Analysis By Thz Spectroscopy, Ryan Shaver, Hannah R. Jones, Jason A. Deibel

Physics Faculty Publications

No abstract provided.

The Knowledge-Driven Exploration Of Integrated Biomedical Knowledge Sources Facilitates The Generation Of New Hypotheses, Vinh Nguyen, Olivier Bodenreider, Todd Minning, Amit P. Sheth

Kno.e.sis Publications

Knowledge gained from the scientific literature can complement newly obtained experimental data in helping researchers understand the pathological processes underlying diseases. However, unless the scientific literature and experimental data are semantically integrated, it is generally difficult for scientists to exploit the two sources effectively. We argue that, in addition to the semantic integration of heterogeneous knowledge sources, the usability of the integrated resource by scientists is dependent upon the availability of knowledge visualization and exploration tools. Moreover, the integration techniques must be scalable and the exploration interfaces must be easy to use by bench scientists. The end goal of such …

Characterization Of Metameterial Devices Using Terahertz Time-Domain Spectroscopy, Hannah R. Jones, Satya Ganti, Jason A. Deibel, Ronald A. Coutu Jr.

Physics Faculty Publications

No abstract provided.