Physical Sciences and Mathematics Commons^™

Effects Of Technical Debt On Software Interoperability, Leonard Peter Binamungu

Tanzania Journal of Engineering and Technology (TJET)

Technical debt (TD) refers to sub-optimal development decisions that make the software costly to maintain and evolve. Examples of TD include structural complexity, violation of coding styles, and code complexity. Existing research has investigated the nature, causes and indicators of TD, as well as tools and strategies for managing TD. However, although TD could hinder the ability of a software system to be interoperable with others, existing literature has limited evidence on how TD affects systems interoperability. This limits the ability of software engineering teams to manage TD in ways that do not hinder systems interoperability. To fill this void, …

Detection Of Extended X-Ray Emission Around The Pevatron Microquasar V4641 Sgr With Xrism, Hiromasa Suzuki, Naomi Tsuji, Yoshiaki Kanemaru, Megumi Shidatsu, Laura Olivera-Nieto, Samar Safi-Harb, Shigeo S. Kimura, Eduardo De La Fuente, Sabrina Casanova, Kaya Mori, Xiaojie Wang, Sei Kato, Dai Tateishi, Hideki Uchiyama, Takaaki Tanaka, Hiroyuki Uchida, Shun Inoue, Dezhi Huang

Physics Faculty Research & Creative Works

A recent report on the detection of very-high-energy gamma rays from V4641 Sagittarii (V4641 Sgr) up to ≈0.8 PeV has made it the second confirmed "PeVatron" microquasar. Here we report on the observation of V4641 Sgr with X-Ray Imaging and Spectroscopy Mission (XRISM) in 2024 September. Thanks to the large field of view and low background, the CCD imager Xtend successfully detected for the first time X-ray extended emission around V4641 Sgr with a significance of ≳4.5σ and >10σ based on our imaging and spectral analysis, respectively. The spatial extent is estimated to have a radius of 7′ ± 3′ …

Butte Priority Soils Operable Unit (Bpsou) 2024 Monthly Progress Report. Consent Decree For The Butte Priority Soils Operable Unit. Civil Action No. Cv 89-039-Bu-Seh, Josh Bryson

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Approval Letter For Final Bpsou Insufficiently Reclaimed Sites Belle Of Butte (Bres No. 8 & Ur-39) Remedial Action Work Plan (Rawp) Request For Change Ir-2024-Ra-01, Revision 1 (Dated December 13, 2024), Molly Roby

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Developing Real-Time, Online Beam Control Of Uhdr Irradiators To Facilitate Flash Translational Investigations, Austin M. Sloop

Dartmouth College Ph.D Dissertations

The field of radiation oncology seeks novel techniques to increase the therapeutic ratio to treat malignancies while minimizing damage and toxicities in healthy tissues. While it was observed that delivering therapeutic doses at high dose rate could elicit lower biological effects over a half-century ago, the field of ultra-high dose rate (UHDR) radiation therapy (colloquially known as FLASH RT) has seen a resurgence in recent years due to an alignment of accelerator capability, dosimetric advances, and improved biotechnological techniques. This has opened the door to studying potential underlying mechanisms such that we may leverage the effects of FLASH tissue sparing …

Thermal Noise Measurement Below The Standard Quantum Limit, Ronald Pagano

LSU Doctoral Dissertations

Quantum mechanics places sensitivity restrictions on physical measurements. These limitations manifest themselves in interferometric force and displacement measurements as uncertainty both in the photon number measured at a photodetector (shot noise), and in the quantum radiation pressure applied to the interferometer (quantum back action noise manifested as quantum radiation pressure noise). The balance between shot noise and quantum radiation pressure noise imposes the Standard Quantum Limit (SQL). A large body of work has been dedicated to measuring these quantum effects and mitigating them. Owing to the inherently small scale at which quantum effects are visible, classical effects must be subverted …

Glacial Lakes Outburst Susceptibility And Risk In The Eastern Himalayas Using Analytical Hierarchy Process And Backpropagation Neural Network Models, Sandeep Kumar Mondal, Jyotindra Narayan, Chitesh Sharma, Rishikesh Bharti, Santosha Kumar Dwivedy, Pinaki Roy Chowdhury

Mathematics, Physics, and Computer Science Faculty Articles and Research

The Himalayan cryosphere is dynamic, and changing climate conditions threaten breach of glacial lakes. A number of glacial lake outburst floods (GLOFs) occurred in the Himalayas in the recent past, affecting people and infrastructures. Assessment of high-altitude glacial lakes is required to avoid associated hazards and mitigate the impacts. In this study, we have made an inventory of naturally formed lakes within the Sikkim Himalayas, including Nepal, Bhutan, and China, and discussed the GLOF susceptibility. A total of 399 lakes have been identified, out of which 281 lakes have an areal coverage greater than 0.01 Km2. Monitoring temporal changes shows …

Uc-221 Accounting Treasury Industries Web Application, Ibrahima Diallo, Alexandra Baker, Tyler J Hood

C-Day Computing Showcase

This accounting software project is designed to provide a comprehensive and efficient solution for financial management within an organization. By focusing on ease of usability, accuracy, and compliance, the software enables users to record, manage, and analyze accounts, journals, and financial transactions seamlessly. Core features include transaction journalization, chart of accounts setup, financial statement generation, and robust account management, all of which are supported by strong data validation and secure access controls. This system seeks to streamline accounting workflows, minimize human/manual errors, and enhance user experience. The ultimate aim is to deliver an intuitive yet powerful tool that supports effective …

Mosaicos De La Comunidad (Mosaics Of The Community): Community-Engaged Participatory Muraling With Madres Emprendedoras, Jesica S. Fernandez, Laura A. Nichols

Ethnic Studies

In this paper, we describe a collaborative community-based research project that centered on community members’ lived experiences, which led to the identification of key community issues that resulted in a representative art project in the form of a public mural. Eleven mothers who were long-time residents of the community were the drivers of the issue identification and mural creation. The issues identified, and subsequently depicted in the mural, revealed the importance of the environment in neighborhoods, with residents dealing with encampments, illegal dumping, prostitution, eviction, and gentrification. In the mural Mosaicos de la Comunidad (Mosaics of the Community), a group …

2025 January 9 - Tennessee Weekly Drought Summary, Tennessee Climate Office, East Tennessee State University

Tennessee Climate Office Weekly Drought Summaries

No abstract provided.

Community-Engaged Research Projects In School Settings: Science Teachers’ Practices And Reflections, Won Jung Kim

Teacher Education

Community-engaged research (CER) is a justice-oriented research paradigm that emphasizes equitable and reciprocal knowledge co-production with community members and organizations, sharing power, benefits, contributions, and responsibilities among all participants. This study explores nine teachers’ cases of facilitating CER projects in their respective school settings, aimed to support students’ critical consciousness and action for environmental issues and injustices. This study contributes to educational research by adapting an existing framework for CER for environmental justice that can guide K-12 teaching and research on it. By analyzing data from teacher community meetings and individual interviews in the CER framework, this study articulates classroom …

Global Estimates Of The Storage And Transit Time Of Water Through Vegetation, Andrew Felton, Joshua B. Fisher, Koen Hufkens, Adam J. Purdy, Seth A. Spawn-Lee, Lou F. Duloisy, Gregory R. Goldsmith

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The time it takes for water to transit from the ground back to the atmosphere affects weather, climate, biogeochemistry and ecosystem function. The transit time of water through vegetation, defined as the age of water transpiring from vegetation since time of entry, is a particularly understudied aspect of the terrestrial hydrologic cycle. Here we use a synergy of satellite remote sensing measurements over a five-year period to estimate global aboveground vegetation water storage to be on average 484 km³, roughly half of which is stored in Earth’s water-limited savannah, grassland and shrubland ecosystems. We then combine these storage …

Rapid Mid-Infrared Spectral Timing With Jwst: Grs 1915+105 During An Mir-Bright And X-Ray-Obscured State, P. Gandhi, E.S. Borowski, J. Byrom, R.I. Hynes, T.J. Maccarone, A.W. Shaw, O.K. Adegoke, D. Altamirano, M.C. Baglio, Y. Bhargava, C.T. Britt, D.A.H. Buckley, D.J.K. Buisson, P. Casella, N. Castro Segura, P.A. Charles, J.M. Corral-Santana, V.S. Dhillon, R. Fender, A. Gurpide, C.O. Heinke, A.B. Igl, C. Knigge, S. Markoff, G. Mastroserio, M.L. Mccollough, M. Middleton, J.M. Miller, J.C.A. Miller-Jones, S.E. Motta, J.A. Paice, D.D. Pawar, R.M. Plotkin, P. Pradhan, M.E. Ressler, D.M. Russell, T.D. Russell, P. Santos-Sanz, T. Shahbaz, T. Shahbaz, G.R. Sivakoff, D. Steeghs, A.J. Tetarenko, J.A. Tomsick, F.M. Vincentelli, M. George, M. Gurwell, R. Rao

Publications

No abstract provided.

Re: December 2024 Berkeley Pit Migratory Waterfowl Protection Monthly Report, Mark Thompson, Loren Burmeister

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Studying The Low-Lying Structure Of 9b Via The 10b(3he,A)9b Reaction, Rachel M. Shaffer

LSU Doctoral Dissertations

The unstable nature of ⁹B makes it a challenging isotope to study. The first-excited state of ⁹B has been particularly difficult to characterize. Since the first experimental observation of this state in 1955, many experimental and theoretical nuclear structure studies have sought to classify it, but with large discrepancies in the energy and width values from these results, the properties of the state remain inconclusive.

An experiment using the ¹⁰B(³He,α)⁹B reaction was performed at the John D. Fox Superconducting Linear Accelerator Laboratory at Florida State University in an effort to populate and characterize …

Baryon Number Violation Search, Tyler D. Stokes

LSU Doctoral Dissertations

Understanding the fundamental forces and symmetries of nature has long been a central goal of particle physics. While the Standard Model (SM) provides a successful framework, it does not guarantee the conservation of baryon number B or lepton number L, thus motivating searches for their violation. Proton decay, a fundamental process violating B, has been at the forefront of experimental searches for decades.

The discovery of the weak neutral current in 1973 unified the electromagnetic and weak forces and inspired the creation of Grand Unified Theories (GUTs) that also unify the strong force. In 1974, the first-ever GUT, …

Impartial Geodetic Building Games On Graphs, Bret J. Benesh, Dana C. Ernst, Marie Meyer, Sarah K. Salmon, Nándor Sieben

Mathematics Faculty Publications

A subset of the vertex set of a graph is geodetically convex if it contains every vertex on any shortest path between two elements of the set. The convex hull of a set of vertices is the smallest convex set containing the set. We study variations of two games introduced by Buckley and Harary, where two players take turns selecting previously-unselected vertices of a graph until the convex hull of the jointly-selected vertices becomes too large. The last player to move is the winner. The achievement game ends when the convex hull contains every vertex. In the avoidance game, the …

Effects Of Fire Recurrence And Severity On Mediterranean Vegetation Dynamics: Implications For Structure And Composition In Southern Spain, Macarena Ortega, Ángel Lora, Larissa Yocom, Rafael Zumaquero, Juan Ramón Molina

Wildland Resources Faculty Publications

Most Mediterranean ecosystems have been profoundly shaped by wildfires, driving the evolution of plant species. Through photo interpretation and field inventories, this research assessed vegetation dynamics from 1984 to 2021, examining how fire severity and recurrence, key fire regime variables, influenced changes in structure and woody species diversity. Using two burn scars (1988 and 2006), we identified four scenarios dominated by Pinus pinea tree species: control (unburned), areas burned once (either in 1988 or 2006), and twice (in both 1988 and 2006).

Areas affected by two high-severity fires experienced the most pronounced expansion of dense shrubland. However, when fire severity …

Tribological, Thermal, Kinetic, And Surface Microtextural Characterization Of Prime P-Type <100> Silicon Wafer Cmp For Direct Wafer Bonding Applications, Michelle Yap, Catherine Yap, Yasa Sampurno, Glenn Whitener, Jason Keleher, Len Borucki, Ara Philipossian

Chemistry Department Faculty Articles

We investigated the tribological, thermal, kinetic, and surface microtextural characteristics of chemical mechanical polishing (CMP) of 300 mm p-type <100> prime silicon wafers (and their native oxide) at various pressures, sliding velocities, and starting platen temperatures. Results showed the dominant tribological mechanism for both native oxide and silicon polishing to be boundary lubrication. Using frictional data, we pinpointed the exact time that corresponded to the total removal of the native oxide and the onset of silicon polishing. This allowed us to separately characterize removal rates of each layer. For native oxide, while the rate depended on temperature, the presence of a …

Using Satellite Image Segmentation To Detect Trails, Jeremy Reynolds

Theses and Dissertations

This masters thesis proposes an innovative approach to satellite image segmentation by focusing on the detection and mapping of walking, hiking, and biking trails. The motivation behind this project comes from the underexplored area in segmentation techniques for trail identification and offers potential benefits for urban planning, environmental monitoring, and public health. The problem statement addresses the need for a model that can differentiate between various trail types and other natural or man-made elements. The project aims for efficiency and scalability in processing satellite imagery across different compute hardware. The work details several stages: researching existing segmentation techniques, specifically road …

Cloud Microphysical Response To Entrainment Of Dry Air Containing Aerosols, Jae Min Yeom, Hamed F. Sadi, Jesse Anderson, Fan Yang, Will Cantrell, Raymond Shaw

Michigan Tech Publications

Impacts of aerosol particles on clouds, precipitation, and climate remain one of the significant uncertainties in climate change. Aerosol particles entrained at cloud top and edge can affect cloud microphysical and macrophysical properties, but the process is still poorly understood. Here we investigate the cloud microphysical responses to the entrainment of aerosol-laden air in the Pi convection-cloud chamber. Results show that cloud droplet number concentration increases and mean radius of droplets decreases, which leads to narrower droplet size distribution and smaller relative dispersion. These behaviors are generally consistent with the scenario expected from the first aerosol-cloud indirect effect for a …

Malliavin Calculus On The Clifford Algebra, Takayoshi Watanabe

Journal of Stochastic Analysis

No abstract provided.

Modelling Uncertain Volatility Using Quantum Stochastic Calculus: Unitary Vs Non-Unitary Time Evolution, Will Hicks

Journal of Stochastic Analysis

No abstract provided.

Analysis And Description Of The Iridescent Film On Calcites In Eastern Iowa, Cavit Schempp, John Oostenryk

Geology: Student Scholarship & Creative Works

During the Devonian Period, eastern to central Iowa experienced multiple transgressive and regressive intervals. This study focuses on the Cou Falls and Gizzard Creek Members of the Coralville Formation, deposited during the Eifelian Stage. Sometime after the formation of the limestone, the interiors of various brachiopods, gastropods, and other fauna began to weather out, creating vugs within the limestone, which gave rise to the first of three growth phases of calcite in the form of rhombohedrons and scalenohedrons. After these primary calcites were formed, new fluids flowed through these vugs, depositing a previously misidentified iridescent film on the calcite crystals, …

Impact Of Arctic And Antarctic Sudden Stratospheric Warmings On Thermospheric Composition, Jiarong Zhang, Jens Oberheide, Nicholas M. Pedatella, Guiping Liu

All Physics Faculty Publications

Using the Global‐scale Observations of the Limb and Disk (GOLD) and the Global Ultraviolet Imager (GUVI), we examine the impact of sudden stratospheric warmings (SSWs) on the changes of thermospheric composition during the 2018–2019 and 2020–2021 Arctic SSWs and the 2019 Antarctic SSW. Contributions of planetary waves, gravity waves, and migrating tides are assessed by performing numerical experiments with the NSF National Center for Atmospheric Research (NCAR) vertically extended version of the Whole Atmosphere Community Climate Model (WACCM‐X). The variations in the column integrated O and N2 density ratio (∑ O/N₂) are generally similar among WACCM‐X, GOLD, …

Voltage-Gated Sodium Channel Nav1.7 Subtype: A Promising Therapeutic Target For Metastatic Medullary Thyroid Cancer, Piyasuda Pukkanasut

All ETDs from UAB

Medullary thyroid carcinoma (MTC), a rare neuroendocrine tumor, presents considerable clinical challenges due to its tendency to metastasize to organs such as the liver, bones, and brain, resulting in poor patient outcomes. Voltage-gated sodium channels (VGSCs) have emerged as potential therapeutic targets in various malignancies due to their crucial role in promoting cancer cell progression, migration, invasion, and metastasis. This dissertation investigates the specific contributions of the VGSC NaV1.7 subtype in MTC, evaluating its potential as a therapeutic target and elucidating its mechanistic involvement in MTC. Initially, we assessed VGSC subtypes expression in MTC cells. The screening revealed an overexpression …

Development Of Momordica Saponin-Based Vaccine Adjuvants, Hyunjung Kim

All ETDs from UAB

Vaccine adjuvants are indispensable substances that help induce a fast, potent, and durable immune response when administered with vaccine antigens. Among the FDA-approved vaccine adjuvants for human use, three of the most recently approved ones contain saponin adjuvant QS-21. To address QS-21’s inherent drawbacks, we investigated the adjuvant activity of a series of saponin-based semisynthetic vaccine adjuvants, including VSA-1 and VSA-2, prepared from natural Momordica saponins I and II in one-step. The natural saponins precursors are isolated from the widely available and inexpensive seeds of Momordica cochinchinensis SPRENG. In general, VSA adjuvants can enhance both humoral and cellular immune responses …

Targeting Streptococcus Mutans Diadenylate Cyclase For The Prevention Of Dental Caries, Edwin Miguel Rojas

All ETDs from UAB

Streptococcus mutans (S. mutans) is the primary etiological agent involved in the initiation and progression of dental caries. S. mutans forms robust biofilms on the tooth surface, and current preventative treatments, such as oral rinses, eliminate both pathogenic and commensal oral species. Therefore, there is an urgent need for therapeutics which selectively inhibit S. mutans biofilms while keeping the oral microbiome intact. The diadenylate cyclase (DAC) enzyme in S. mutans plays a key role in biofilm formation. DAC converts adenosine triphosphate (ATP) into cyclic di-AMP (c-di-AMP), a secondary messenger involved in several cellular pathways. Increased levels of c-di-AMP have shown …

New Frontiers In Synthesis Of High-Entropy Materials Enabled By Microwave-Induced Plasma, Bria Christina Storr

All ETDs from UAB

This dissertation presents the novel approach for synthesizing high entropy borides (HEBs) and high entropy alloys (HEAs) using microwave-induced plasma as a rapid and efficient processing tool. High entropy materials (HEMs) have peaked interested in recent years due to their unique properties and practical applications such as thermal stability, and corrosion and wear resistance. HEMs are designed by combining multiple principal elements in near-equimolar ratios, enhancing stability, and offering a broad spectrum of tailored mechanical properties. The inclusion of multiple transition metals within these structures increases hardness and oxidation resistance, and the flexibility in element selection enables precise tuning for …

Synthesis And Characterization Of Bimetallic Plasmonic Nanoparticles Using Linear And Nonlinear Spectroscopy, Daniel Babayode

LSU Doctoral Dissertations

Recent exploration in the field of nanomaterials has led to the investigation of noble metal nanoparticles for various nanomedical applications. The spectroscopy of these nanoparticles is studied using both linear and nonlinear optical processes such as second harmonic generation (SHG), two-photon fluorescence (TPF), and extinction spectroscopy. Details pertaining to the growth dynamics of silver-gold core-shell (Ag@Au CS) nanoparticles (NPs) and gold-silver-gold core-shell-shell (Au@Ag@Au CSS) nanoparticles (NPs) are currently being investigated in order to obtain better control and optimization of the nanoparticle size and surface morphology. Transmission electron microscopy (TEM) images show that the nanoparticles have tunable core and shell sizes …