Digital Commons Network^™

The Importance Of Waste Grassland For Potential Biomass And Bio‐Energy Production In China, Liangzheng Yan, Lin Zhang, Shiqiang Wang, Xiaoyu Chen, Lin Hu

IGC Proceedings (1977-2023)

No abstract provided.

Teaching A Social Science Course On Climate Change: Suggestions For Active Learning, Leslie A. Duram

Publications

Previous research indicates the importance of interdisciplinary approaches when teaching about climate change. Specifically, social science perspectives allow students to under-stand the policy, economic, cultural, and personal influences that impact environmental change. This article describes one such college course that employed active-learning techniques. Course topics included community resilience, environmental education, historical knowledge timeline, climate justice, social vulnerability, youth action, science communication, hope versus despair, misinformation, and climate refugees. To unify these concepts, engaging activities were devel-oped that specifically address relevant individual, local, state, national, and international climate resilience themes. Students assessed their personal climate footprint, explored social/cultural influences, wrote policy …

Medical School Watercooler Newsletter - August 6, 2021, Lindsey Lyle

Watercooler Newsletter

This is the August 6, 2021 edition of the Frederick P. Whiddon College of Medicine's newsletter - Watercooler.

Contents include:

• Meet a Med Student: Tiara Dean
• Medical student aids woman in cardiac arrest
• Mark your calendar for upcoming grand rounds
• Register now: Paddle the Delta CME Conference
• USA researchers study cat flea saliva to uncover how diseases are spread
• Faculty Spotlight: Benjamin Niland, M.D.
• Neonatologist Kelechi Ikeri joins pediatrics faculty
• Save the date: OB-GYN Conference set for Oct. 14-15

Enhanced Flexible Pavement Performance Using Treated Compared To Untreated Aggregate Bases: A Comparative Case Study In The Southern United States, Mena L. Souliman, Hemant Gc, Zabi Mohammed

Civil Engineering Faculty Publications and Presentations

One of the important aspects of highway design is aggregates. Aggregates strength and consistency has an effect on pavement structure's overall performance. The consistency of the base material near the site of the construction doesn't always match the requirements of pavement construction and carrying quality aggregate raises the cost of construction. Stabilizing agents such as asphalt cement, lime, fly ash were used to improve the strength of these materials in order to make greater use of locally available materials. Layer materials present in the pavements and the structure of them influence pavement performance. The compressive strain and the tensile strain …

Spring Commencement Program, August 6, 2021, Coastal Carolina University

Commencement Programs

Program of Commencement Exercises at Coastal Carolina University.

Martensitic And Inter-Martensitic Transformations In Magnetocaloric Ni2.15mn0.85ga Heusler Alloy, A. Madiligama, P. Ari-Gur, Y, Ren, V, Shavrov, Y. Ge, J. George, I. Musabirov, V. Koledov

Mechanical and Aerospace Engineering Faculty Publications

The entropy changes of successive martensitic phase transformations in Ni-Mn-Ga Heusler alloys can be utilized to realize enhanced magnetocaloric properties. A detailed study of phase transformations of one such alloy, Ni2.15Mn0.85Ga, (ΔQ = 4900 J/kg at 343 K, under 140 kOe), is reported here. Upon cooling, the paramagnetic cubic (L21) austenitic phase transforms into a ferromagnetic 7M modulated monoclinic martensitic phase. This phase is stable in a narrow temperature range, and upon further cooling, transforms into a non-modulated ferromagnetic tetragonal (L10) phase. The separation between the equilibrium temperatures of the austenitic and tetragonal martensitic phases is only ~50 K. The …

An Analysis Of Human Gait Under Slippery Conditions Using Opensim's Musculoskeletal Simulations, Phong K. Phan

Theses and Dissertations

Computational simulations of gait under abnormal conditions provide insights into the actions of muscles, its relationships with external reaction forces and motions of the body during slips, trips, and falls - the leading causes of occupational injuries worldwide. OpenSimTM, an open-source motion simulation software, was utilized to construct musculoskeletal structures and create dynamic simulations of body movements. Gaits of eighteen subjects were studied to extract experimentally difficult-to-obtained variables under slippery conditions. The joint angles and moments of hip, knee, ankle and the forces of four prime muscle groups were analyzed for body corrective movements during slip events. Besides, the connections …

Cfd Investigation Of The Drag Effects On An Aircraft By Means Of Altering The Wing Or Canard Size And Position, Taylor Brown

Theses and Dissertations

The stability and maneuverability of aircraft are some key factors for selecting the locations of wings or canards on the fuselage. Another important variable that is considered in the design of an aircraft is drag force which impacts fuel efficiency. This research investigates how drag force of a surrogate aircraft is affected by the placement of the wing or canard along the fuselage. Unique for this study is the placement of the canard in the fuselage nose region, with the leading edge upstream of the nose, resembling the shape of a hammerhead shark's head. When the leading edge of all …

Robust Data Submission Pipeline For Agmip Global Economics Modelers, Raziq Ramli

Discovery Undergraduate Interdisciplinary Research Internship

Agricultural Model Intercomparison and Improvement Project (AgMIP) is an international effort to improve agricultural models and scientific and technological capabilities for assessing the impacts of climate variability and other driving factors on agriculture, food security, and poverty. The Global Economics (GlobalEcon) team in AgMIP conducts extensive model intercomparison to assess the agricultural effects of climate change, bioenergy policies, and socioeconomic factors. Currently, the preparation and sharing of GlobalEcon model data are done manually, which is time-consuming and error-prone. This project aims to address this problem by designing a robust data submission pipeline capable of harmonizing data from diverse modeling groups …

Active Thermography For Additive Manufacturing Processes, Nicholas Jay Wallace

Theses and Dissertations

The goal of the research conducted for this master's thesis is to understand if active thermography is a suitable technique to detect (identify) and measure (approximate depth and or size) defects in additive manufacturing (AM) processes. Although other non-destructive measurement techniques exist, active thermography is an attractive option for AM applications because of the short measurement times that could be implemented between each layer of a print, and because of the relatively inexpensive equipment required. However, pulse thermography is typically applied to detect larger defects (>1 mm) in materials with high thermal conductivity. It was uncertain if active thermography …

Designing Cell-Free Protein Synthesis Systems For Improved Biocatalysis And On-Demand, Cost-Effective Biosensors, Mehran Soltani Najafabadi

Theses and Dissertations

The open nature of Cell-Free Protein Synthesis (CFPS) systems has enabled flexible design, easy manipulation, and novel applications of protein engineering in therapeutic production, biocatalysis, and biosensors. This dissertation reports on three advances in the application of CFPS systems for 1) improving biocatalysis performance in industrial applications by site-specific covalent enzyme immobilization, 2) expressing and optimizing a difficult to express a mammalian protein in bacterial-based CFPS systems and its application for cost-effective, on-demand biosensors compatible with human body fluids, and 3) streamlining the procedure of an E. coli extract with built-in compatibility with human body fluid biosensors. Site-specific covalent immobilization …

Using Machine Learning Techniques To Model The Process-Structure-Property Relationship In Additive Manufacturing, Seyyed Hadi Seifi Shishavan

Theses and Dissertations

Additive manufacturing (AM) is a novel fabrication technique capable of producing highly complex parts. Nevertheless, a major challenge is improving the quality of the fabricated parts. While there are several ways of approaching this problem, developing data-driven methods that use AM process signatures to identify these part anomalies can be rapidly applied to improve the overall part quality during the build. The objective of this dissertation is to model multiple processes within the AM to quantify the quality of the parts and reduced the uncertainty due to variation in input process parameters. The objective of first study is to build …

Nonlinear Pricing With Finite Information, Dirk Bergemann, Edmund M. Yeh, Jinkun Zhang

Cowles Foundation Discussion Papers

We analyze nonlinear pricing with finite information. We consider a multi-product environment where each buyer has preferences over a d-dimensional variety of goods. The seller is limited to offering a finite number n of d-dimensional choices. The limited menu reflects a finite communication capacity between the buyer and seller. We identify necessary conditions that the optimal finite menu must satisfy, for either the socially efficient or the revenue-maximizing mechanism. These conditions require that information be bundled, or "quantized," optimally. We introduce vector quantization and establish that the losses due to finite menus converge to zero at a rate …

Free-Free Absorption In Hot Relativistic Flows: Application To Fast Radio Bursts, Esha Kundu, Bing Zhang

Physics & Astronomy Faculty Research

Magnetic flares create hot relativistic shocks outside the light cylinder radius of a magnetized star. Radio emission produced in such a shock or at a radius smaller than the shock undergoes free–free absorption while passing through the shocked medium. In this work, we demonstrate that this free–free absorption can lead to a negative drift in the frequency-time spectra. Whether it is related to the downward drift pattern observed in fast radio bursts (FRBs) is unclear. However, if the FRB down-drifting is due to this mechanism then it will be pronounced in those shocks that have isotropic kinetic energies ≳1044 erg. …

Reduction Of Clabsi In Telemetry Patients Through Limiting Central Line Blood Draw, Caselyn Lok

Student Scholarly Projects

CLABSI is known to be one of the many healthcare-associated infections that has led to an increase in health complications, length of hospital stays, and increased in healthcare cost. There is about 25000 bloodstream infection that occurs annually (Haddadin, Annamaraju, & Regunath, 2020). The PICOT question that guided this project was “How does limiting blood-draw from central venous catheter lines influence the rate of central-line associated bloodstream infections (CLABSI) post-implementation compared to rate of CLABSI pre-implementation after eight weeks?” CLABSI prevention bundles were already being used to guide healthcare providers in handling CVC access. There were 15 scholarly articles that …

Numerical Investigation Of The Effect Of Trailing Edge Deformations On Noise From Jets Exhausting Over Flat Plates, Colby N. Horner

Theses and Dissertations

The design of aircraft propulsion configurations must digress from the typical configurations that are utilized on the majority of aircraft in order to consider the effects of environmental issues as well as the noise that is generated from the engines. One unconventional approach under consideration involves rectangular jets near flat surfaces that are parallel to the jet axis. This type of configuration makes an attempt to muffle the noise that propagates to the ground, but previous experimental work showed that the noise generated by this configuration was actually increased due to the effect that the plate trailing edge exerts on …

Sclerostin As A Potential Therapy For Medial Vascular Calcification Through The Inhibition Of The Wnt/Beta-Catenin Pathway, Jada S. Boone

Theses and Dissertations

Cardiovascular disease is among the leading causes of death in the US. It stems from the pathological buildup of plaque within the vasculature known as vascular calcification. Medial calcification, or arteriosclerosis is the buildup of plaque within the medial layer of the arteries resulting in artery wall stiffening and reduction of blood flow. Evidence suggests that the vascular smooth muscles cells (VSMCs) that line the medial layer of the arteries, undergo a phenotypic switch to osteoblast-like cells to deposit calcium while in this pathological state. The Wnt/BETA-catenin pathway could potentially play a role in the phenotypic modulation. Inhibition of the …

Development Of A Detect-And-Avoid Sensor Solution For The Integration Of A Group 3 Large Unmanned Aircraft System Into The National Airspace System, Kyle Bradley Ryker

Theses and Dissertations

Unmanned Aircraft Systems (UAS) face one common challenge when integrating with the existing manned aircraft population in the National Airspace System (NAS). To unlock the full efficiency of UAS, the UAS integrator must comply with an onboard pilot’s requirement to see-and-avoid other aircraft while operating. Commercially available Detect-and-Avoid (DAA) sensor technologies have been developed to attempt to comply with this requirement. UAS integrators must use these sensors to meet or exceed the performance of a human pilot. This thesis covers research done to integrate an array of commercially made DAA sensors with a large Group 3 UAS both in hardware …

August 6, 2021 Ereporter, University Of Alabama At Birmingham

eReporter (campus newsletter)

No abstract provided.

Final 2021 Residential Metals Abatement Program (Rmap) School Soil Sampling Field Sampling Plan (Fsp) Submittal #6 [Covering Small World Daycare], Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Analysis Of Liquefied Natural Gas (Lng) Systems With Innovative Waste Heat Recovery, Shisir Acharya

LSU New Orleans Theses and Dissertations

Due to the increase in energy needs all over the world, many nations do not have sufficient indigenous energy resources and have turned towards importing Liquefied Natural Gas (LNG). LNG production is an energy intensive process that produces a lot of wasted heat. The objective of this study is to review the current LNG processes and identify areas of improvement. To begin with, this study analyzes wasted energy recovery methods currently used in various power plants, followed by validation of the capability of the software, Thermoflex, against the published performance data of various power plants and corresponding gas cleanup processes. …

"We Can (All) Be Heroes" The American Monomyth And The Problem With A Queer Captain America, Carlos Rodriguez Rosa

All HCAS Student Capstones, Theses, and Dissertations

The quintessential superhero is an American Monomyth; a figure who is selfless, cunning, and headstrong, seeking nothing for themself in favor of the collective. What this figure is not, however, is queer. This project examines how queer audiences utilize slash fanfiction to queer the Marvel Cinematic Universe’s Captain America in order to “write back” to the canon that excludes them. This thesis does not simply look at what fans do within slash fanfiction; rather, it explicitly examines how the practice challenges the original text the piece is responding to. The project applies a queer rhetorical analysis, utilizing José Esteban Muñoz’s …

Fairview Junior High School, Fair Views, Memphis, 3:3, 1933

Shelby County, Tennessee

Volume 3, No. 3 of "Fair Views" published by the students of Fairview Junior High School, Memphis, Tennessee, on December 19, 1933. Fairview opened as a junior high school in 1930 on the corner of Central Avenue and East Parkway and later became a middle school.

Former 'Snl' Writer Brings 'The Heartbreak Henry' To Oxford, Lareeca Rucker

University of Mississippi News

No abstract provided.

The Determinants Of Environmental Performance: A Study On Indonesia Listed Firms, Amalia Tresna Fadhilah, Harry Suharman, Sofik Handoyo

Journal of Accounting Auditing and Business

This study aims to analyse and examine the determinants of environmental performance in companies. The results of this study are expected to increase the company's concern for environmental sustainability. The population in this study were all companies listed on the Indonesia Stock Exchange in the 2017-2020 period. The samples in this study were 11 companies listed on the Indonesia Stock Exchange for the 2017-2020 period. This research was conducted with a quantitative approach. The results show that financial performance, corporate governance, and market capitalisation positively and significantly affect environmental performance.

Additive Manufacturing Supply Chain Design And Modeling Using Customer Product Choices: An Application With Biomedical Implants, Julekha Hussain Ranta

Theses and Dissertations

This study proposed a utility-driven two-stage stochastic mixed-integer linear programming model to understand how the patient preferences impact the additive manufacturing (AM) supply chain design decisions. The goal of the mathematical model is to maximize the utilities derived from the customer preferences by appropriately allocating the AM facilities in the targeted region under customer decision and demand uncertainty. The mathematical model is visualized and validated by developing a real-life case study that utilizes the biomedical implants data for the state of Mississippi. A number of sensitivity analyses are conducted to understand how the patients' behavioral decisions (e.g., price-centric versus time- …

Secularism: A Measure Of Explicit Agreement With Assumptions Of Secularism (Meaas), Conner Douglas Jones

Theses and Dissertations

Values are inherent within cultures, relationships, and many other systems, however, little study has been done on the extent to which individuals may explicitly agree with the metaphysical assumptions that much of psychological science relies upon. Psychological science, which uses scientific methodology, is a trusted source of knowledge for many students. Scientific methodology is conceptually linked to assumptions of naturalism, which makes claims about the truth of reality. These naturalistic assumptions pertain to ideas of disenchantment, which describe the world as free from any transcendent quality. These same ideas have become popular among people of the Western world and are …

An Investigation Of The Impact Gender-Specific Course Grouping Has On Female Middle-School Students' Concept Of And Interests Toward Technology And Engineering, Thomas Broderick Walsh

Theses and Dissertations

Attempts to improve retention, interest, and enrollment of females in Technology & Engineering Education courses have included a variety of approaches including female-only classes. However, the implications of such courses have not been thoroughly investigated. Therefore, an investigation of female-only classes was undertaken; the findings revealed that the overall enrollment of females went up in the course and in subsequent classes, these students maintained their interests and attitudes towards Technology and Engineering, their perceptions of an engineer's gender changed from that of mostly male to mostly female, and their concepts of what an engineer does changed from mostly building or …

Analysis Of Closed-Loop Digital Twin, Andrew Stuart Eyring

Theses and Dissertations

Given recent advancements in technology and recognizing the evolution of smart manufacturing, the implementation of digital twins for factories and processes is becoming more common and more useful. Additionally, expansion in connectivity, growth in data storage, and the implementation of the Industrial Internet of Things (IIoT) allow for greater opportunities not only with digital twins but closed loop analytics. Discrete Event Simulation (DES) has been used to create digital twins and in some instances fitted with live connections to closely monitor factory operations. However, the benefits of a connected digital twin are not easily quantified. Therefore, a test bed demonstration …

The Role Of A Sickled Microenvironment In Cardiac Dysfunction, Allison Nicole Healey

Theses and Dissertations

This study helps to fill a remaining knowledge gap surrounding the mechanisms and pathways that contribute to cardiomyopathies in SCD. A better understanding of the pathophysiological mechanisms could lead to more accurate therapeutic targets to improve quality of life as well as life expectancy. In this study I recapitulate cardiac dysfunction in vitro by exposing engineered mouse cardiac tissues to ANG II or the sickled microenvironment. Experimental results include gene expression profiles and oxidative stress generation. Gene expression profiles in the ANG II treated tissues indicated a pathological state with upregulation in biomarkers for inflammation, cell adhesion, wall stress and …