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Articles 1 - 30 of 1762

Full-Text Articles in Physical Sciences and Mathematics

Numerical Modeling Of Magnetic Fields For Mirror Neutron Search Experiment, Adam Johnston May 2020

Numerical Modeling Of Magnetic Fields For Mirror Neutron Search Experiment, Adam Johnston

Pursuit - The Journal of Undergraduate Research at the University of Tennessee

This paper will outline the configuration of 3D magnetic field model simulated from electric current sources using MATLAB. The model is using 3D arrays allowing for quick and accurate numerical approximations of Bio-Savart integrals, of error < , modeling the behavior of a magnetic field due to current carrying wires. We will discuss the development of a 3D magnetic field configuration produced by the current carrying wires around a large 2.5 m diameter vacuum beam tube in the proposed mirror neutron search experiment at High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL). The simulations demonstrate that the magnetic field with uniformity better than ± 2.5 mG that will allow for optimal results in experiment within the controlled range of net magnetic field magnitudes |B| 500 mG and in the large vacuum tube along 20-m neutron flight path can be achieved for an approximately 6 cm radius section at the center of the tube.


Ecosystem Services Of Urban Tree Canopy For The Mitigation Of Climate Change: Measuring Carbon Sequestration And Understory Temperature Reduction Of Knoxville’S Urban Forest, Tyler Hounshell May 2020

Ecosystem Services Of Urban Tree Canopy For The Mitigation Of Climate Change: Measuring Carbon Sequestration And Understory Temperature Reduction Of Knoxville’S Urban Forest, Tyler Hounshell

Pursuit - The Journal of Undergraduate Research at the University of Tennessee

In the future, the city of Knoxville, Tennessee will be impacted by climate warming due to anthropogenic climate change. Yet, the ecosystem services provided by urban tree canopy in Knoxville’s urban forest can help mitigate the effects of climate warming. In addition to improving air quality, regulating water flow, and reducing noise pollution, Knoxville’s urban forest serves as a carbon sink and sequesters carbon dioxide on an annual basis. Utilizing methods for calculating carbon sequestration by trees in urban and suburban settings developed by the U.S. Energy Information Administration, the sequestration potential and its uncertainty is calculated ...


Measurements Of Fast Alpha Decays In The 100sn Region, Ian Connor Cox May 2020

Measurements Of Fast Alpha Decays In The 100sn Region, Ian Connor Cox

Chancellor’s Honors Program Projects

No abstract provided.


Early Warning Solar Storm Prediction, Ian D. Lumsden, Marvin Joshi, Matthew Smalley, Aiden Rutter, Ben Klein May 2020

Early Warning Solar Storm Prediction, Ian D. Lumsden, Marvin Joshi, Matthew Smalley, Aiden Rutter, Ben Klein

Chancellor’s Honors Program Projects

No abstract provided.


Combating Intersection-Related Imposter Phenomenon In The Workplace Through Career Readiness, Simone Stewart Nov 2019

Combating Intersection-Related Imposter Phenomenon In The Workplace Through Career Readiness, Simone Stewart

Black Issues Conference

Research has determined that Impostor Phenomenon (IP) most likely occurs in members of minority groups, students, first generation professionals and persons for whom success came quickly. Other studies have shown that many professional women are One of the ways to combat IP is through the development of competencies needed in your career. Attend this workshop to learn how to develop strategies to approach career competency while on campus and throughout your career to keep you on top of your game!


Weaponizing Radioactive Medical Waste - The Looming Threat, Shreekumar Menon, Vagish Kumar L.S. Nov 2019

Weaponizing Radioactive Medical Waste - The Looming Threat, Shreekumar Menon, Vagish Kumar L.S.

International Journal of Nuclear Security

Across the globe, use of radioactive substances for medical treatment, by hospitals has resulted in generation of toxic wastes on a large scale. Disposal of these wastes are being entrusted to waste disposal vendors. Environmental concerns, pressures, restrictions and high labor costs, compel these vendors to dump these wastes in third world countries, where enforcement and awareness are substantially low. Unrestricted access to these waste dumps is an open invitation to terror organizations to extract toxic substances and fabricate crude dirty bombs to threaten public safety, and cause low-level contamination of sensitive installations. It is therefore imperative to create an ...


Python Script For Homogeneous Aqueous Chemical Reaction Analysis And Associated Data Related To Radiolysis Simulations, Peter James Doyle, David Bartels Sep 2019

Python Script For Homogeneous Aqueous Chemical Reaction Analysis And Associated Data Related To Radiolysis Simulations, Peter James Doyle, David Bartels

Faculty Publications and Other Works -- Nuclear Engineering

No abstract provided.


Analysis Of Hurricane Track Forecast Accuracy During The 2018 Season, Jonathan D. Unger Jul 2019

Analysis Of Hurricane Track Forecast Accuracy During The 2018 Season, Jonathan D. Unger

Pursuit - The Journal of Undergraduate Research at the University of Tennessee

Hurricane track forecasting has become more accurate in recent years due to technological advances in modeling methods. However, due to the complex nature of the relationship between oceanic and atmospheric variables and hurricane tracks, noteworthy errors in track prediction, especially for predictions several days into the future, still remain. In this study, two different methods of forecasting hurricane tracks are compared. Using the four United States landfalling hurricanes of the 2018 season as a sample, the official forecast tracks published by the National Hurricane Center (NHC) and hypothetical tracks based purely on climatology were mapped simultaneously with the preliminary best ...


Lidar-Based Sinkhole Detection And Mapping In Knox County, Tennessee, J Clint Shannon, David Moore, Yingkui Li, Cathy Olsen Jul 2019

Lidar-Based Sinkhole Detection And Mapping In Knox County, Tennessee, J Clint Shannon, David Moore, Yingkui Li, Cathy Olsen

Pursuit - The Journal of Undergraduate Research at the University of Tennessee

Sinkholes are one of the major causes of damage to roads, buildings, and other infrastructure throughout the US. Sinkholes near or on roads are especially costly and occasionally deadly. Knox County and much of East Tennessee are located within karst areas (comprised of porous and soluble limestone and dolomite), deeming it at risk for sinkholes. Currently, Knox County uses contour maps to manually identify sinkholes. Supported by a geographic information system (GIS), we developed a streamlined model to identify the locations and extents of potential sinkholes using 1.3-ft resolution LiDAR (Light Detection and Ranging) data and applied it to ...


High Resolution Validation Of Next Generation Turbulent Flow Models Using Neutron Beams, Laser Fluorescence, And Cryogenic Helium, Landen G Mcdonald May 2019

High Resolution Validation Of Next Generation Turbulent Flow Models Using Neutron Beams, Laser Fluorescence, And Cryogenic Helium, Landen G Mcdonald

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Turbulent fluid flow is an incredibly unpredictable subject that continues to confound scientists and engineers. All of the empirical data that has been the basis of conventional turbulent computational fluid dynamics (CFD) models for decades only extends to roughly the equivalent turbulence created when Michael Phelps swims in a pool. The problem is that this data is then extrapolated out many orders of magnitude in order to design cruise ships, airplanes, and rockets which operate in significantly more turbulent flow regimes. This creates an incredible degree of uncertainty in the design process that demands over-engineering and increased expenditures.

The development ...


Implementing A Self-Corrected Chemical Potential Scheme In Determinant Quantum Monte Carlo Simulations, Kevin Gordon Kleiner May 2019

Implementing A Self-Corrected Chemical Potential Scheme In Determinant Quantum Monte Carlo Simulations, Kevin Gordon Kleiner

Chancellor’s Honors Program Projects

No abstract provided.


Neurological Disease Detection Using Surface Enhanced Spatially Offset Raman Spectroscopy (Sesors), Taylor D. Payne May 2019

Neurological Disease Detection Using Surface Enhanced Spatially Offset Raman Spectroscopy (Sesors), Taylor D. Payne

Chancellor’s Honors Program Projects

No abstract provided.


Extraction Of Thorium Oxide From Monazite Ore, Makalee Ruch, Chloe Frame, Molly Landon, Ralph Laurel, Annabelle Large May 2019

Extraction Of Thorium Oxide From Monazite Ore, Makalee Ruch, Chloe Frame, Molly Landon, Ralph Laurel, Annabelle Large

Chancellor’s Honors Program Projects

No abstract provided.


Constructions Of Hadamard Matrices, Jacob Steepleton May 2019

Constructions Of Hadamard Matrices, Jacob Steepleton

Chancellor’s Honors Program Projects

No abstract provided.


Computational Studies Of Small Molecule Activation In Catylsis And Green Chemistry, Alexa N. Griffith Ms. May 2019

Computational Studies Of Small Molecule Activation In Catylsis And Green Chemistry, Alexa N. Griffith Ms.

Chancellor’s Honors Program Projects

No abstract provided.


Thornado-Hydro: Generalizing Discontinuous Galerkin Methods For A Nuclear Equation Of State For Supernova Hydrodynamics, Brandon Lynn Barker, Eirik Endeve, Anthony Mezzacappa May 2019

Thornado-Hydro: Generalizing Discontinuous Galerkin Methods For A Nuclear Equation Of State For Supernova Hydrodynamics, Brandon Lynn Barker, Eirik Endeve, Anthony Mezzacappa

Chancellor’s Honors Program Projects

No abstract provided.


Potential Contamination Risk In Tennessee Aquifers From Oil And Gas Drilling, Emma Reed May 2019

Potential Contamination Risk In Tennessee Aquifers From Oil And Gas Drilling, Emma Reed

Chancellor’s Honors Program Projects

No abstract provided.


A Raman Spectroscopic Investigation Of Neurotransmitters And Photon Migration, Ian C. Bennie May 2019

A Raman Spectroscopic Investigation Of Neurotransmitters And Photon Migration, Ian C. Bennie

Chancellor’s Honors Program Projects

No abstract provided.


Analysis Of Hurricane Track Forecast Accuracy During The 2018 Season, Jonathan Unger May 2019

Analysis Of Hurricane Track Forecast Accuracy During The 2018 Season, Jonathan Unger

Chancellor’s Honors Program Projects

No abstract provided.


Fungal Response To Wildfire In A Southeastern Wildland-Urban Interface, Vanessa Rosanne Harpe Apr 2019

Fungal Response To Wildfire In A Southeastern Wildland-Urban Interface, Vanessa Rosanne Harpe

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Fungi are key to belowground ecosystem function, yet post-fire recovery of fungal communities has not been examined in many ecosystems. A massive wildfire in 2016 in the Great Smoky Mountains National Park (GSMNP) and surrounding urban landscape (Gatlinburg, TN) presented a novel opportunity to study post-fire fungal response within an urban-forest ecosystem. We surveyed soils and plants in GSMNP and Gatlinburg, TN 1.5-2 years post-fire to assess colonization of arbuscular mycorrhizal fungi (AMF, aseptate hyphae) and decomposers/pathogens (septate hyphae) from 13 plant species across 18 sites, (9 park, 9 urban).

Overall, colonization by aseptate (intraradical R2= 0 ...


Assessing The Habitability Of Mars Using Impact Crater Statistics, Emily N. Shaver Apr 2019

Assessing The Habitability Of Mars Using Impact Crater Statistics, Emily N. Shaver

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Because Mars lacks a global magnetic field or protective ozone layer, its surface is unshielded to harsh radiation from space. This ionizing radiation breaks down any organic components in the soil at the martian surface on timescales of tens to hundreds of millions years (10–100 Ma). In planetary geology, we use the density of impact craters as a proxy for time: older surfaces tend to accumulate more craters. Using impact craters, we can assess the exposure age and therefore organic preservation potential of the Martian surface from orbit.

The goal of this ongoing project is to better understand exposure ...


Using Atran Telluric Correction To Investigate The 3Μm-Region, Lucas Trent Mcclure Apr 2019

Using Atran Telluric Correction To Investigate The 3Μm-Region, Lucas Trent Mcclure

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Small-bodies of the Solar System, such as asteroids, provide an abundant amount of information about planetary formation and evolution. In particular, the characterization of asteroids is vital to understanding the distribution and abundance of water throughout the Solar System. Recent findings in asteroid spectroscopy have provided evidence for the surface presence of water-ice and hydroxide, likely due to silicates on asteroid surfaces interacting with H+ ions from the solar wind. To investigate surface hydration, astronomers analyze the 3µm region, where an absorption feature is exhibited. Atmospheric water, however, affects the quality of the data around this particular region, but a ...


Movement Of Lifetime Maximum Intensity Locations During The North Atlantic Hurricane Season, Morgan Steckler Apr 2019

Movement Of Lifetime Maximum Intensity Locations During The North Atlantic Hurricane Season, Morgan Steckler

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Where a storm reaches its lifetime maximum intensity (LMI) can be a powerful indicator of tropical cyclone intensification patterns. Any changes in this location may demonstrate how hurricanes are affected by climate change. Studies on the annual and decadal trends in LMI location have shown that the latitude where storms are reaching their LMI is shifting, but at different rates and in different directions depending on the ocean basin. In the North Atlantic, for example, LMI location seems to be moving slightly closer to the equator, especially for those storms with the greatest intensities. LMI location patterns have yet to ...


Computational Studies Of Alkanol Reaction Pathways On A Srtio3 Perovskite Surface, Kyle R. Mason Apr 2019

Computational Studies Of Alkanol Reaction Pathways On A Srtio3 Perovskite Surface, Kyle R. Mason

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

No abstract provided.


Measurement And Analysis Of The Extreme Physical Shock Environment Experienced By Crane-Mounted Radiation Detection Systems, Matthew Boyd, Jennifer Erchinger, Craig M. Marianno, Gene Kallenbach Jan 2019

Measurement And Analysis Of The Extreme Physical Shock Environment Experienced By Crane-Mounted Radiation Detection Systems, Matthew Boyd, Jennifer Erchinger, Craig M. Marianno, Gene Kallenbach

International Journal of Nuclear Security

At ports of entry, radiation detectors could be mounted on container gantry crane spreaders to monitor cargo containers entering and leaving the country. These detectors would have to withstand the extreme physical conditions experienced by these spreaders during normal operations. Physical shock data from the gable ends of a spreader were recorded during the loading and unloading of a cargo ship by two hard mounted PCB Piezotronics model 340A50 accelerometers and two Lansmont SAVER 9X30 units (with padding). The majority of large shocks were observed in the vertical direction. The Lansmont units recorded mean shocks of 22.215 ± 1.174 ...


A Story Of Data Won, Data Lost And Data Re-Found: The Realities Of Ecological Data Preservation, Alison Specht Nov 2018

A Story Of Data Won, Data Lost And Data Re-Found: The Realities Of Ecological Data Preservation, Alison Specht

DataONE Sociocultural and Usability & Assessment Working Groups

This paper discusses the process of retrieval and updating legacy data to allow on-line discovery and delivery. There are many pitfalls of institutional and non-institutional ecological data conservation over the long term. Interruptions to custodianship, old media, lost knowledge and the continuous evolution of species names makes resurrection of old data challenging. We caution against technological arrogance and emphasise the importance of international standards.

We use a case study of a compiled set of continent-wide vegetation survey data for which, although the analyses had been published, the raw data had not. In the original study, publications containing plot data collected ...


Data: New Age Estimates And Microscopic Charcoal Data For The 1976-B Core From Anderson Pond, Tennessee, Usa, Sally P. Horn, Mathew S. Boehm, Joanne P. Ballard Aug 2018

Data: New Age Estimates And Microscopic Charcoal Data For The 1976-B Core From Anderson Pond, Tennessee, Usa, Sally P. Horn, Mathew S. Boehm, Joanne P. Ballard

Geography Publications and Other Works

The deposited data include new estimated ages along with microscopic charcoal data for a sediment core from Anderson Pond, Tennessee, recovered in 1976 by H.R. Delcourt (Ecological Monographs 49:255–280, 1979). These data supplement the paper by S.P. Horn, M.S. Boehm, and J.P. Ballard, "An improved chronology for the microscopic charcoal and pollen records from Anderson Pond, Tennessee, USA" (Palynology, forthcoming). The microscopic charcoal data were developed under NSF grant #0822824 to Sally Horn and Zheng-Hua Li. The new age estimates build upon research supported by that award and by NSF grants #0823131 to Steven ...


Recommended Corrective Security Measures To Address The Weaknesses Identified Within The Shapash Nuclear Research Institute, Khadija Moussaid, Oum Keltoum Hakam Jun 2018

Recommended Corrective Security Measures To Address The Weaknesses Identified Within The Shapash Nuclear Research Institute, Khadija Moussaid, Oum Keltoum Hakam

International Journal of Nuclear Security

The Shapash Nuclear Research Institute (SNRI) data book was issued by the International Atomic Energy Agency (IAEA) in 2013. The hypothetical facility data book describes the hypothetical site, which is divided into two areas: the low-security area, known as the administrative area, and the very high-security area, known as the protected area. The book contains detailed descriptions of each area’s safety and security measures, along with figures of multiple buildings in both areas, and also includes information about the site’s computer networks.

This paper aims to identify security weaknesses related to the institute’s location, the Administrative Area ...


Conducting Nuclear Security Culture Self-Assessments In Nuclear Research Facilities Using The Iaea Methodology, Anhar Riza Antariksawan, Khairul Khairul, Heru Umbara, Endang Kristuti, Bayu Purnomo Jun 2018

Conducting Nuclear Security Culture Self-Assessments In Nuclear Research Facilities Using The Iaea Methodology, Anhar Riza Antariksawan, Khairul Khairul, Heru Umbara, Endang Kristuti, Bayu Purnomo

International Journal of Nuclear Security

The National Nuclear Energy Agency of Indonesia (BATAN) has promoted the culture and assessment of nuclear security in Indonesia since 2010. After conducting a successful trial assessment in 2012, BATAN performed a second self-assessment in 2015 in three nuclear facilities. The assessment's methodology followed the guidelines set by the International Atomic Energy Agency (IAEA). The objective of this paper is to demonstrate the techniques used in applying the IAEA methodology and to discuss the primary outcomes of the assessment. The data collection consisted of surveys, interviews, document reviews, and observations. A total of about 50% of the three facilities ...


Path Creation By Continuous Flocking As An Example Of A Morphogenetic Programming Language, Bruce J Maclennan Jun 2018

Path Creation By Continuous Flocking As An Example Of A Morphogenetic Programming Language, Bruce J Maclennan

Faculty Publications and Other Works -- EECS

Artificial morphogenesis uses processes inspired by embryology to control massive swarms of robots to assemble complex physical structures. First, we use an example morphogenetic program to illustrate a prototype implementation of morphgen, a morphogenetic programming language. The syntax and semantics are described informally as illustrated by the example program, which is included in its entirety in an appendix. Another appendix includes a complete formal grammar for the current version of the language. Next, we describe the results of a series of experiments with the program, which simulates a continuous swarm of microscopic agents creating paths from an origin to a ...