Physical Sciences and Mathematics Commons^™

Laser-Spark Multicharged Ion Implantation System ‒ Application In Ion Implantation And Neural Deposition Of Carbon In Nickel (111), Oguzhan Balki

Electrical & Computer Engineering Theses & Dissertations

Carbon ions generated by ablation of a carbon target using an Nd:YAG laser pulse (wavelength λ = 1064 nm, pulse width τ = 7 ns, and laser fluence of 10-110 J/cm²) are characterized. Time-of-flight analyzer, a three-mesh retarding field analyzer, and an electrostatic ion energy analyzer are used to study the charge and energy of carbon ions generated by laser ablation. The dependencies of the ion signal on the laser fluence, laser focal point position relative to target surface, and the acceleration voltage are described. Up to C⁴⁺ are observed. When no acceleration voltage is applied between …

Global Conservation Status And Threat Patterns Of The World’S Most Prominent Forage Fishes (Teleostei, Clupeiformes), Tiffany L. Birge

Biological Sciences Theses & Dissertations

Conserving biodiversity is one of the greatest ethical responsibilities and challenges humans face. Understanding the conservation status of taxonomic groups provides a systematic way to prioritize efforts to combat biodiversity loss. The 405 species within the order Clupeiformes are the herrings, shads, sardines, anchovies, menhadens and relatives that include many of the most important marine forage fishes. These small, schooling fishes are economically, ecologically and culturally significant globally. Despite their contribution to global fisheries and our increasing reliance on these fishes for food and industrial commodities, they are generally poorly known with limited information regarding basic biology and population trends. …

Tick Control Methods For Amblyomma Americanum In Virginia: Applications And Modeling, Alexis Lynn White

Biological Sciences Theses & Dissertations

Tick-borne diseases continue to increase in the United States, and yet no comprehensive method of tick control currently exists. The lone star tick, Amblyomma americanum, is an aggressive human-biting tick and vector of several pathogens which effect both humans and other animals. Standard control methods do not work as well for A. americanum as they do for the more commonly studied blacklegged tick, Ixodes scapularis. TickBot, a tick-killing robot, is a potential method to control A. americanum that lures ticks to its path with carbon dioxide and the ticks die from contact with a permethrin-treated cloth that is …

Spatiotemporal Downscaling Rainfall Predictions Of North American Regional Climate Change Assessment Program For Entire Virginia, Zhaoyi Cai

Civil & Environmental Engineering Theses & Dissertations

This thesis developed a statistical downscaling approach, which consists of a series of linear regression equations, to spatiotemporally downscale the rainfall predictions from North American Regional Climate Change Assessment Program (NARCCAP) in accordance with the 15-min observed rainfall data at the rain gauges across the state of Virginia. NARCCAP has generated twelve different region-global climate models (RCM-GCMs) with a temporal resolution of 3 hr and a spatial resolution of 50 km over the entire America. Although it has been downscaled already, such resolutions are still too coarse to represent the rain gauges. This means that the RCM-GCMs’ predictions need to …

Catalytic Transfer Hydrogenation Reactions Of Lipids, Alexander Asiedu

Civil & Environmental Engineering Theses & Dissertations

Catalytic transfer hydrogenation (CTH) of lipids was investigated using 2-propanol as hydrogen donor for producing liquid hydrocarbons, e.g. jet fuels. The main sources of lipids selected in this study were waste cooking oil (WCO) and oil-laden algae-derived biofuel intermediate (BI). Two different catalysts were employed in this study, namely activated carbon and trimetallic-doped zeolite.

The CTH reaction was between WCO and 2-propanol in a continuous flow reactor over a packed-bed activated carbon at near atmospheric pressure. Results revealed a high level of alkenes and aromatics compounds, which are not stable and are not environmentally unfriendly. To reduce these compounds in …

Molecular Modeling Labs For Freshman Chemistry I, Suzanne Ellenberger, Sara Blankenship, Ana West, Rupa Gokal, Daphne Norton, Nick Nguyen, Cynthia Tope

Chemistry Ancillary Materials

This set of laboratory exercises for Freshman Chemistry I was created under a Round Thirteen Mini-Grant for Ancillary Materials Creation and Revision. The exercises are intended for the AMPAC and Agui chemistry software program, and topics covered include Physical Properties, VSEPR, and a molecular modeling activity.

User Interface Engineering (Ksu), Yong Shi, Dan Lo, Selena He, Mingon Kang, Sarah North

Computer Science and Information Technology Grants Collections

This Grants Collection for User Interface Engineering was created under a Round Twelve ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

• Linked Syllabus
• Initial Proposal
• Final Report

Mobile Software Development (Ksu), Yong Shi, Dan Lo, Selena He, Sarah North, Mingon Kang

Computer Science and Information Technology Grants Collections

This Grants Collection for Mobile Software Development was created under a Round Twelve ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

• Linked Syllabus
• Initial Proposal
• Final Report

Computer Organization And Architecture (Ksu), Yong Shi, Dan Lo, Selena He, Mingon Kang, Sarah North

Computer Science and Information Technology Grants Collections

This Grants Collection for Computer Organization and Architecture was created under a Round Twelve ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

• Linked Syllabus
• Initial Proposal
• Final Report

Advanced Web Development (Ksu), Meng Han, Jack Zheng

Computer Science and Information Technology Grants Collections

This Grants Collection for Advanced Web Development was created under a Round Twelve ALG Textbook Transformation Grant.

Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.

Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:

• Linked Syllabus
• Initial Proposal
• Final Report

Feature Space Modeling For Accurate And Efficient Learning From Non-Stationary Data, Ayesha Akter

Doctoral Dissertations

A non-stationary dataset is one whose statistical properties such as the mean, variance, correlation, probability distribution, etc. change over a specific interval of time. On the contrary, a stationary dataset is one whose statistical properties remain constant over time. Apart from the volatile statistical properties, non-stationary data poses other challenges such as time and memory management due to the limitation of computational resources mostly caused by the recent advancements in data collection technologies which generate a variety of data at an alarming pace and volume. Additionally, when the collected data is complex, managing data complexity, emerging from its dimensionality and …

A Multicarrier Technique For Monte Carlo Simulation Of Electrothermal Transport In Nanoelectronics, Tyler J. Spence

Doctoral Dissertations

The field of microelectronics plays an important role in many areas of engineering and science, being ubiquitous in aerospace, industrial manufacturing, biotechnology, and many other fields. Today, many micro- and nanoscale electronic devices are integrated into one package. e capacity to simulate new devices accurately is critical to the engineering design process, as device engineers use simulations to predict performance characteristics and identify potential issues before fabrication. A problem of particular interest is the simulation of devices which exhibit exotic behaviors due to non-equilibrium thermodynamics and thermal effects such as self-heating. Frequently, it is desirable to predict the level of …

Communiqué: College Of Humanities, Arts & Sciences Alumni Magazine, Volume 8, Fall 2019, University Of Northern Iowa. College Of Humanities, Arts, And Sciences.

Communiqué: College of Humanities, Arts & Sciences Alumni Magazine

Inside This Issue:
EVERY ISSUE
--4 Message from the Dean
--5 Donor Feature
--34 CHAS Briefs
--42 New Faculty
--44 Class Notes
FEATURES
--6 Cyber Defense Team
--10 Christine Stewart: Poet Laureate
--14 A New Data Degree for the Future
--28 How Puppets Can Teach Art
STORIES
--18 Prairie Dedication
--20 CS Endorsement
--22 Legacy of Light
--25 EMBARC Program
--26 Metal Casting Center
--32 Periodic Table Lecturer
--36 Sertoma Lab
--38 Golf Internship
--40 Art, Biology and Autism
--47 Visiting Author

Proximity Detection With Single-Antenna Iot Devices, Timothy J. Pierson, Travis Peters, Ronald Peterson, David Kotz

Dartmouth Scholarship

Providing secure communications between wireless devices that encounter each other on an ad-hoc basis is a challenge that has not yet been fully addressed. In these cases, close physical proximity among devices that have never shared a secret key is sometimes used as a basis of trust; devices in close proximity are deemed trustworthy while more distant devices are viewed as potential adversaries. Because radio waves are invisible, however, a user may believe a wireless device is communicating with a nearby device when in fact the user’s device is communicating with a distant adversary. Researchers have previously proposed methods for …

Nonlinear Characterizing Of A New Titanium Nitride On Aluminum Oxide Metalens, Michael A. Cumming

Theses and Dissertations

A sample metalens generated from Titanium Nitride deposited onto Aluminum Oxide was designed to focus at 10 microns with a beam centered at 800nm, and when analyzed with high intensity illumination was found to have a focal length of 9.650 ±.003µm at an intensity of 16.93[MW/cm² ]. Analyzing this change by comparing it to a Fresnel Lens’ physics shows that for this lens, the effective nonlinear index of refraction is certainly greater than the nonlinear index of just Titanium Nitride itself, at −1.6239 × 10⁻¹⁵[m²/W] compared to the materials −1.3 × 10⁻¹⁵[m^{2 …}

เรื่องจากปก: "พืชน้ำ" ความสำคัญต่อระบบนิเวศ, ขวัญฤทัย คำฝาเชื้อ

Thai Environment

No abstract provided.

บทความ: การทำนาข้าวสังข์หยดเมืองพัทลุงแบบอินทรีย์เพื่อความยั่งยืนของชุมชน, มลฤดี จันทรัตน์, ดวงกมล พิหูสูตร

Thai Environment

No abstract provided.

บทความ: การประยุกต์ใช้จลนศาสตร์ไฟฟ้าบำบัดและฟื้นฟูพื้นที่ปนเปื้อนโลหะหนัก, กฤษฎี วานิชสวัสดิ์วิชัย, พันธวัศ สัมพันธ์พานิช

Thai Environment

No abstract provided.

บทความ: ไม้กระถินเหลือใช้.....มวลชีวภาพสำหรับการฟื้นฟูดินปนเปื้อน, อโณทัย โกวิทย์วิวัฒน์, พันธวัศ สัมพันธ์พานิช, พินิจภณ ปิตุยะ

Thai Environment

No abstract provided.

บทความ: ผลสำเร็จของงานบริการวิชาการแก่สังคมด้านสิ่งแวดล้อม...สู่การพัฒนา 1 คณะ 1 โมเดล (The Achievement Of Academic Services To Society For The Environment...To The Development Of One Faculty - One Model), ณรงค์ ใจเที่ยง, ปฏิพัทธ์ วงค์เรือง, ศรีสดา เจริญดี, ประกาศิต ทอนช่วย, ภากรณ์ ภู่สุวรรณ, แสงชัย วงศ์มานะกูล, อรทัย เกตุขาว

Thai Environment

No abstract provided.

บทความ: การพัฒนาชุมชนสุขภาวะต้นแบบการป้องกันปัญหาหมอกควัน อำเภอปง จังหวัดพะเยา (Development Of Healthy Community Model For Smog Pollution Prevention In Pong District, Phayao Province), ณรงค์ ใจเที่ยง, ปฏิพัทธ์ วงค์เรือง

Thai Environment

No abstract provided.

บทความ: รูปแบบและผลสำเร็จการฟื้นฟูปะการังด้วย "โดมปะการัง" โดยการมีส่วนร่วมของชุมชนเกาะสีชัง-เกาะขามใหญ่ จังหวัดชลบุรี (Khamyai Island Community Coral Rehabilitation By "Coral Dome"), สมภพ รุ่งสุภา

Thai Environment

No abstract provided.

Complete Matching For Quasidistribution Functions In Large Momentum Effective Theory, Wei Wang, Jian-Hui Zhang, Shuai Zhao, Ruilin Zhu

Physics Faculty Publications

We complete the procedure of extracting parton distribution functions (PDFs) using large momentum effective theory at leading power accuracy in the hadron momentum. We derive a general factorization formula for the quasi-PDFs in the presence of mixing and give the corresponding hard matching kernel at O(α_s), both for the unpolarized and for the polarized quark and gluon quasi-PDFs. Our calculation is performed in a regularization-independent momentum subtraction scheme. The results allow us to match the nonperturbatively renormalized quasi-PDFs to normal PDFs in the presence of mixing and therefore can be used to extract flavor-singlet quark PDFs as well …

Numerical Exploration Of Three Relativistic Particles In A Finite Volume Including Two-Particle Resonances And Bound States, Fernando Romero-López, Stephen R. Sharpe, Tyler D. Blanton, Raúl A. Briceño, Maxwell T. Hansen

Physics Faculty Publications

In this work, we use an extension of the quantization condition, given in ref. [1], to numerically explore the finite-volume spectrum of three relativistic particles, in the case that two-particle subsets are either resonant or bound. The original form of the relativistic three-particle quantization condition was derived under a technical assumption on the two-particle K matrix that required the absence of two-particle bound states or narrow two-particle resonances. Here we describe how this restriction can be lifted in a simple way using the freedom in the definition of the K-matrix-like quantity that enters the quantization condition. With this in hand, …

Comparing Proton Momentum Distributions In A = 2 And 3 Nuclei Via 2H 3H And 3He (E,E′P) Measurements, R. Cruz-Torres, F. Hauenstein, A. Schmidt, D. Nguyen, D. Abrams, H. Albataineh, S. Alsalmi, D. Androic, K. Aniol, W. Armstrong, J. Arrington, H. Atac, D. Bulumulla, C. E. Hyde, V. Khachatryan, M. N.H. Rashad, L. B. Weinstein, Z. Y. Ye, J. Zhang, Jefferson Lab Hall A Tritium Collaboration

Physics Faculty Publications

We report the first measurement of the (e, e' p) reaction cross-section ratios for Helium-3 (³He), Tritium (³H), and Deuterium (d). The measurement covered a missing momentum range of 40 ≤ p_miss ≤ 550 MeV/c, at large momentum transfer ({Q²} ≈ 1.9 (GeV/c)²) and x_B > 1, which minimized contributions from non quasi-elastic (QE) reaction mechanisms. The data is compared with planewave impulse approximation (PWIA) calculations using realistic spectral functions and momentum distributions. The measured and PWIA-calculated cross-section ratios for ³He/d and ³H/d extend to just above the typical …

Seasonal Variations In Temperature–Suicide Associations Across South Korea, Adam J. Kalkstein, Miloslav Belorid, Paul Grady Dixon Ph.D., Kyu Rang Kim, Keith A. Bremer

Geosciences Faculty Publications

South Korea has among the highest rates of suicide in the world, and previous research suggests that suicide frequency increases with anomalously high temperatures, possibly as a result of increased sunshine. However, it is unclear whether this temperature–suicide association exists throughout the entire year. Using distributed lag nonlinear modeling, which effectively controls for nonlinear and delayed effects, we examine temperature–suicide associations for both a warm season (April–September) and a cool season (October–March) for three cities across South Korea: Seoul, Daegu, and Busan. We find consistent, statistically significant, mostly linear relationships between relative risk of suicide and daily temperature in the …

Biophysics In Applications, Marilyn R. Gunner

Open Educational Resources

No abstract provided.

2019 October - Tennessee Monthly Climate Report, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Monthly Report

No abstract provided.

Building A Green Dorm: How Colleges And Universities Across America Have Embraced Sustainable Communal Living, Theresa M. Blickenstaff

Student Publications

Building a dorm is hard work. Building a green, sustainable dorm is doubly so. With their extensive lighting, appliances, heating and cooling needs, fans, and laundry machines, traditional college residence halls are notorious for their large energy footprints. Particularly for colleges such as Gettysburg where dorm living is mandatory for some or all four years, the environmental impact of residence halls is particularly large. As leaders with long histories of inspiring change, colleges and universities in the United States have an obligation to promote sustainable practices. Gettysburg College has announced that in the next few years, it is planning to …

Iodane-Guided C-H Cleavage To Synthesize Densely Functionalized Arenes, Aleksandra Nilova, Paul A. Sibbald, Edward J. Valente, Gisela Gonzalez-Monteil, H. Camille Richardson, Kevin S. Brown, Paul Cheong, David Stuart

Chemistry Faculty Publications and Presentations

We describe a strategy for the iodane-guided functionalization of sterically congested C-H bonds, which is distinct from electronic, steric or proximity guided C-H functionalization methods. Readily accessible aryl(Mes)iodonium salts serve as the starting materials in these reactions and produce complex 1,2,3,4-substituted arenes via aryne intermediates. This approach is especially powerful when coupled with the innate C-H functionalization reactivity of simple arenes, to replace two C-H bonds with two C-C or C-heteroatom bonds while over-riding steric effects that typically inhibit such reactions. DFT stud-ies reveal a contribution of inductive, resonance, and steric effects on the regioselectivity of C-H cleavage and aryne …