Digital Commons Network^™

Holla Back: The African American Rhetorical Tradition Of Call And Response And The Montgomery Riverfront Brawl, Solomon Cochren

Electronic Theses and Dissertations Archive

Call and Response is a common production and performance within the African/African American community. Traditionally, it has been synonymous with African/African American preaching/oratory and African/African American music (spirituals, blues, gospel, jazz, soul, and rap). When the discourse of Call and Response is engaged often, it is regulated to these two major contexts. Unfortunately, this is a common and unostentatious understanding of Call and Response in the primary sectors of the African/African American (A/AA) community. The discourse of Call and Response outside of preaching and music within the densely populated African and African American life provides limited discourse of conceptualization and …

Transcranial Ultrasound Investigation Toward Rapid Stroke Detection, Taylor Nickole Christian

Electronic Theses and Dissertations Archive

Ischemic strokes entail a blockage of vessels in the brain and account for 87% of all strokes. When these blockages occur in large cerebral arteries, there is a 95% post-stroke mortality rate. Given these statistics, rapid identification and treatment is crucial for positive patient outcomes. Transcranial Doppler (TCD) is a noninvasive ultrasound technique that transmits ultrasonic pulses through the skull to assess arterial flow velocities to determine whether any large vessel occlusions (LVOs) are present. However, identifying both an acoustic window that allows ultrasonic pulses to propagate well and the angle to align the beam with large vessels proves to …

Engineering Redshirt: Implementation Of An Engineering Summer Bridge Program And A Year-Long Cohort For Students Who Start Below Calculus 1 Within Engineering., Isaiah Surbrook

Electronic Theses and Dissertations Archive

The Engineering Redshirt Program (ERP) was designed to address the challenges first-year engineering students face when starting below Calculus 1. Students who are under prepared in math often struggle as engineering majors, and in turn, experience lower retention and graduation rates. The ERP aims to increase student success by utilizing peer mentors, a summer bridge program, academic support, and social connections during the student's first year of enrollment. The ERP was funded by a grant from the Tennessee Board of Regents. This study examines the implementation and preliminary outcomes of the ERP’s first cohort, which consists of eight students during …

Power-Beaming: Wireless Energy Transfer Using Lasers, Spencer L. Barnett

ATU Scholars Symposium

The objective of the project is to implement a wireless energy transfer system utilizing laser technology. This system involves modulating the laser’s beam profile and spatial distribution through precise optical manipulation. The energy transmitted by the laser is captured by a photovoltaic array, commonly referred to as a solar panel, which is engineered to convert incident photons into direct current (DC) electrical power. The current challenge is to develop a reliable wireless energy transfer mechanism capable of operating over extended distances, thereby overcoming the constraints imposed by wired connections, particularly in environments where wiring is impractical, such as in space. …

Dual Colorimetric And Fluorometric Detection Of Hydrogen Peroxide In Aqueous Samples, Nathan F. Surles, Kaitlin A. Edwards

ATU Scholars Symposium

In this project, a simple, inexpensive colorimetric and fluorometric method for determining hydrogen peroxide in aqueous samples is described. In this method, aryl boronic acid is de-protected to produce a red dye that absorbs and emits in the red/near infrared region of the electromagnetic spectrum. Upon deprotection by the hydrogen peroxide, an intramolecular charge transfer occurs between a strong phenolate donor and a TCF acceptor to produce the strong absorption and bright fluorescence. This allows naked eye detection of hydrogen peroxide within seconds in water under physiological conditions. The detection limit is impressive and falls in the sub-micromolar (µM) range. …

Method For Low-Cost In Situ Measurement Of Dissolved Total Volatile Organic Compound Concentrations In Surface Waters, Teagan A. Jones

ATU Scholars Symposium

Increases in volatile organic compounds (VOC) in developing areas poses risks to aquatic health. Water quality changes in surface waters, if measured, are often only for field parameters of pH, specific conductance, water temperature, and major ions, e.g. Ca2+, Mg2+, Na, Cl. Elevated VOC concentrations can negatively impact aquatic ecosystems even at low concentrations, but do not cause changes in commonly measured parameters and may go undetected based on monitoring these common parameters. Traditional sampling and benchtop analysis for VOC can be both time and cost prohibitive. Here we demonstrate the use of a low-cost in situ dissolved total VOC …

Light As A Lasso: The Design And Construction Of An Optical Trap, Joseph E. Temple

ATU Scholars Symposium

The goal of our work is the design and construction of an optical trap, also known as an "optical tweezer," using equipment commonly available to the undergraduate physics laboratory. Such devices allow us to observe and manipulate micron-scale (on the order of one-thousandth of a millimeter) objects in 3-dimensional space using only light.

The system consists primarily of five components: a laser, two mirrors to collimate (make parallel to the optical table) the beam, two lenses forming a beam expander, two more lenses granting control over the trapping plane, and a microscope objective to focus the beam. Thus far we …

Analyzing Quantum Mechanical Properties Of Electrons Via The Anomalous Zeeman Effect To Verify The Bohr Magneton, Gunner W. Hodges, Anthony J. Mclain

ATU Scholars Symposium

At the turn of the 19th century, scientists were gradually realizing that nature did not behave as it had been thought for centuries. Many thought the concrete laws governing nature were soon to be completed. As we now know, their deterministic optimism was far from reality. Electromagnetic theory predicted that the spectral line emissions from a bulb would split into three distinct bands in the presence of a uniform magnetic field. This behavior was proven in what is known as the Normal Zeeman Effect. What was not expected though was the host of extraneous bands that accompanied the predicted triplet …

College Market, Krysta L. Ray, Sijan Panday, Janniebeth Melendez, Gavin Kent

ATU Scholars Symposium

Each year, according to planetaid.org, college students generate 640 million pounds of waste with items like clothes, furniture, books, and other belongings to avoid the hassle of moving them, contributing to unnecessary waste. Current marketplace applications are overloaded with listings, making it difficult for students to buy and sell items efficiently. For example, 250 million sellers worldwide user Facebook Marketplace. To address this, College Market offers a solution that reduces waste while facilitating seamless connections between students selling unwanted goods and those seeking affordable, local items. College Market is a secure, campus-centered application designed to address both environmental and economic …

An Investigation Into Continued Fraction Expansions Of √ N, Sara R. Ladik, Abdulkadir Hassen

STEM Student Research Symposium Posters

A continued fraction represents a number using an integer part and a sequence of positive integers in the denominators, with all numerators equal to one. This research examines the infinite continued fraction expansions of square roots of non-perfect squares. We observed and proved patterns in these expansions.

Discovering And Characterizing Novel Temperate Bacteriophage Infecting Arthrobacter Globiformis B-2979, Paige M. Baldwin, Michael Bennet, Evangelia A. Buonamici, Hanan E. Isik, Niran E. Isik, Vienna Li, Mia R. Mazakas, Aaryan M. Modi, Nikita Muppoor, Kylie A. Oliver, Vidhi M. Patel, Kylie Tabak, Jamie K. Yu, Laura Weber

STEM Student Research Symposium Posters

AmiCi24 is a novel temperate bacteriophage collected from a soil sample originating in Sewell, NJ, USA and cultivated with Arthrobacter globiformis B-2979. AmiCi24 is a Siphoviridae morphotype, belonging to the cluster AS and subcluster of AS3. The AmiCi24 genome consists of 38,466 basepairs, encoding 68 genes.

Stability Analysis & Analytic Solutions To Unforced Kinematic Property Equations, James Turbett

STEM Student Research Symposium Posters

We present analytic solutions and a stability analysis for a system of nonlinear coupled differential equations that describe the time evolution of kinematic properties of geophysical fluids. Solution curves in phase space are interestingly hyperbolic, elliptical, or parabolic in nature, depending on the initial conditions we input and have interesting geometrical properties.

Fixed-Size Ledger Of Fungible Tokens, Sky P. Waterpeace, Nick Ivanov

STEM Student Research Symposium Posters

Hypotheses:

1. Using a fixed number of fixed-size tokens, the storage of transaction history can be outsourced to the owners of the tokens or to the network.

2. With distributed transaction histories, disjunctive (targeted) proof becomes possible.

Enabling Localized Execution Of Smart Contracts Via Distributed Event Beacons, Rakesh Vasa, Sky P. Waterpeace, Nick Ivanov

STEM Student Research Symposium Posters

Modern smart contracts save their state transitions on a distributed ledger, such as blockchain [3, 4] or a particularly configured cloud [1]. These approaches necessitate storage and synchronization of large amounts of distributed data, leading to scalability deficiencies in decentralized permissionless smart contract platforms. In this poster, we introduce a novel concept of local execution of smart contracts which only required synchronizing the transaction data between the members of the private channel, without the need to storing state transitions on the distributed storage. To achieve this, we design a distributed storage-free decentralized beacon network that allows to perform provenance signatures …

Generating More Equitable Fair Use, Jacqueline Kessel

Pepperdine Law Review

From advancing healthcare and education to threatening democratic systems, generative artificial intelligence (AI) has demonstrated a capacity to positively and negatively impact society. And these benefits and consequences are not shared equitably. Copyright law, however, stands as a powerful mechanism in monitoring AI system development. Several complaints have charged generative AI system developers with copyright infringement, alleging that (1) ingesting copyrighted works as training data infringes the copyright owner’s exclusive right to reproduce works in copies and (2) generating AI outputs infringes the exclusive right to prepare derivative works because the outputs are based upon the works on which the …

High Temperature Performance Of Geopolymer: Contribution Of Boron Tincal Waste, Zinnur Çelik, Emrah Turan, Meral Oltulu

Journal of Sustainable Construction Materials and Technologies

The world's largest boron deposits are in Turkey, Russia, and the U.S.A. Türkiye holds about 73% of the world's reserves of oil. The tincal mineral accounts for approximately 25.3% of Türkiye's boron reserves. Annually, around 900,000 tons of boron-derived waste are produced to obtain 1 million tons of borax pentahydrate from the tincal mine. This waste is stored in pools, causing considerable environmental issues. This study investigates the potential use of tincal waste, an environmental problem, in cement and concrete applications. Tincal waste (T.W.) was utilized to produce geopolymer mortar. Geopolymer samples were created by replacing ground blast furnace slag …

Dewatering Process For Reuse Of Seabed Dredging Material And Time And Cost Optimization Of The Process By Value Engineering Method, Cansu Kayabaşı Aksu, Şenay Atabay

Journal of Sustainable Construction Materials and Technologies

The decrease in resources in the world has led people to produce new solutions for the more efficient use of resources and to use various management techniques. One of the techniques used is Value Engineering. Value Engineering strives to increase the value of structures by optimally organizing each component that makes up the structure. Increasing the value of a structure is possible by eliminating all the unnecessary costs in line with specific criteria and by providing the optimal solution between the owner, the user, and the contractor's objectives, that is, the duration, cost, and quality. This study includes the changes …

Rheology Of Superabsorbent Polymer-Modified And Basalt Fiber-Reinforced Cement Paste With Silica Fume: Response Surface Methodology, Hasan Dilbas

Journal of Sustainable Construction Materials and Technologies

A composite's rheology can be changed by adding superabsorbent polymer (SAP) and basalt fibers and using silica fume. This study aimed to investigate the effects of these components on the viscosity and shear stress parameters of the paste. The proportions of the components were varied, with SAP content ranging from 0.01% to 0.03%, basalt fiber from 0% to 0.50%, silica fume (micro silica) at 15%, and water content from 0.40 to 0.50. Response surface methodology was used to optimize the mixture proportions, and the rheological properties of the resulting pastes were characterized using a rheometer. Results showed that the addition …

An Architectural Query Of Anthropocene Era: Planned Obsolescence, H.Gül Aydın, Emel Birer

Journal of Sustainable Construction Materials and Technologies

After Modernity, the human has become the subject, and the world redefined by the human has turned into a painting. However, the efforts of human subjectivity to reveal the world in the Anthropocene Era, with negative practices such as the “planned obsolescence theory,” which is the research subject, even prepares for the end of its existence. According to the research hypothesis evaluated through the theory’s effect on architectural problems, “secular- ization should take place against planned obsolete architecture.” The research aims to show that positive feedback can be provided in society and ecology by reversing architectural consump- tion. It is …

Assessment Of A New Rigid Wall Permeameter For The Slurry Like Barrier Materials: Zeolite Example, Gökhan Çevikbilen

Journal of Sustainable Construction Materials and Technologies

Areas vulnerable to catastrophic disasters such as hurricane, landslide and earthquake require ready and sustainable solutions for the post-pollution scenarios. Clinoptilolite type zeolite re- sources of Türkiye can serve economical and sustainable solutions as a quick response. While the studies on compacted zeolite-bentonite mixture at optimum water content for the landfill liners applications or dry zeolite-sand mixtures in permeable reactive barrier (PRB)s are com- mon, the slurry form of zeolite emplacement at subsurface reactive barriers has not received an attention by the researchers. In this context, this experimental study presents the prelimi- nary findings on one-dimensional consolidation and hydraulic conductivity …

Thermal Conductivity, Abrasion Resistance And Compressive Strength Of End-Of-Life Tire Aggregate Incorporated Concrete, Kasım Mermerdaş, Süleyman İpek, Yusuf Işıker, Alparslan Ulusoy

Journal of Sustainable Construction Materials and Technologies

Recycling end-of-life tires is a global problem that requires an urgent solution. Storing and preserving these tires is a challenge that delays facing potential problems instead of solving the problem. In this context, recycling waste tires without harming the environment and at low costs has been the focus of many researchers. For several decades, the possibility of grinding these tires to aggregate size for concrete and substituting them with natural aggregate has been the subject of research by scientists working in this field. In this regard, this study aims to experimentally investigate the influence of waste rubber aggregate on some …

Influence Of Porosity On The Free Vibration Response Of Sandwich Functionally Graded Porous Beams, Sura Kareem Al-Itbı, Ahmad Reshad Noorı

Journal of Sustainable Construction Materials and Technologies

Functionally graded materials are composite materials used to build a variety of structures. These structures are used in ships industries, marine, automotive, high building structures, energy engineering applications, and many more. The porosity made in these materials may negatively affect some behavior aspects like stiffness, and strength, but it may provide superior performance in other fields like vibration reduction, thermal isolation, energy absorption, and others. In this paper, we will discuss the effect of porosity on the natural frequencies for functionally graded porous (FGP) sandwich beams. The mechanical properties of the FGP sandwich beams are changing with the porosity in …

An Investigation On Effect Of Aggregate Distribution On Physical And Mechanical Properties Of Recycled Aggregate Concrete (Rac), Hasan Dilbas

Journal of Sustainable Construction Materials and Technologies

The aim of the study is to optimize the aggregate gradation curve (AGC) for recycled aggregate concrete (RAC). Accordingly, TS 802 aggregate gradation curves such as A16, B16 and C16 and, also two proposed AGCs such as G1 and G2 are examined in the experiments. Hence, in total, 10 mixes are designed in consideration of A16, B16, C16, G1 and G2. The physical (density and water absorption) and the mechanical (compressive strength) properties are determined conducting the standard tests at the age of 28th days after a standard 22±2oC water curing. Also, a criterion weighting method such as Entropy Method …

Study Of Thermal And Mechanical Properties Of Typha Leaf - Clay Panels, Younouss Dıeye, Pape M. Toure, Seckou Bodıan, Prince M. Gueye, Mactar Faye, Vincent Sambou

Journal of Sustainable Construction Materials and Technologies

This study contributes to the valorization of typha as local materials of building for thermal insulation. We will examine the influence of the binder content and granulometry on the mechanical and thermal properties of typha - clay panels. The plant of typha is used in different granulometries such as powdered typha and defibrated typha. The results showed that compressive strength, thermal conductivity and effusivity depend on the particle size of the typha and also the binder. The panels of defibrated typha have a better thermal insulation performance (0.085 W.m-1.K-1 for 66.66 %), which is comparable with many of natural insulating …

Evaluating The Importance Of Construction Activities For Sustainable Construction Practices In Building Projects In Nigeria, Peter Okoye, Isaac Odesola, Kevin Okolie

Journal of Sustainable Construction Materials and Technologies

Construction activities inherently impact the environment, economy and the society positively and negatively. Optimisation of these activities for attainment of sustainable construction and development is very essential. Therefore, this study categorised and evaluated the construction activities necessary for sustainable construction practices in building project delivery. It employed the distribution of questionnaires to the consultants, professional, and building contractors, including the relevant employees of different Government ministries, departments and agencies responsible for the delivery of building projects across the five states of South East Nigeria. Through the application of the relative importance index (RII) analysis, the study revealed that out of …

Physical Characterization And Optimization Of Fineness Moduli Of Natural Sand From The North Region Of Cameroon Used In Construction, Bertin Kagonbé

Journal of Sustainable Construction Materials and Technologies

This paper deals with the physical characterization and the optimization of fineness moduli of some natural sand samples for their appropriate valorization in construction in North Cameroon. Five sands samples (SN5, SB1, SB2, SB3 and SB4) were selected from various locations. Tests conducted include Particle size analysis, Organic impurities, Sand Equivalent and Bulk density. Fineness Modulus (FM), Mean grain, Sorting index (Si), Skewedness index and Uniformity coefficient have been deducted mathematically. Results shown that the particle size distribution curves of the studied sands have an "S" shape. The sand equivalent values vary between 91.1 and 96.8 %, characteristic of very …

Prediction Of Compressive Strength Of Calcined Clay Based Cement Mortars Using Support Vector Machine And Artificial Neural Network Techniques, Joseph Marangu

Journal of Sustainable Construction Materials and Technologies

Prediction of strength in cement based materials is vital in construction industry as it forms the basis upon which important tasks can be performed such as the time for mortar form removal, project scheduling and quality control among others. The paper reports both experimental and simulated findings on compressive strength of laboratory prepared blended cement mortars. The blended cement was prepared by blending calcined clays with Ordinary Portland Cement (OPC) at replacement levels ranging from 35% to 50% by mass of OPC. In the experimental approach, mortars measuring 160 mm x 40 mm x 40 mm were cast using the …

Thermomechanical Characterization Of Particleboards From Powder Typha Leaves, Younouss Dieye

Journal of Sustainable Construction Materials and Technologies

New composite boards with low-thermal conductivity produced from a mixture of powder Typha leaves and a binder as gum arabic have been developed. The goal of this paper was to investigate the effect of binder content on compressive strength and thermal properties of typha panels. The results showed that the panels with a binder content of 33.33–50 % had the thermal conductivity values ranging from 0.055 to 0.083 W.m-1.K-1, which was close to that of many natural insulating materials. The compressive strength values obtained were comparable to those of the lime – hemp concrete. This study showed that typha possesses …

Investigating High-Speed Railways In Terms Of The Economy For Our Country And The Region, Onur Şahin, Mehmet Fatih Altan

Journal of Sustainable Construction Materials and Technologies

High-speed railways have a history of more than 40 years. Railways continued to be popular especially in various parts of Eastern Europe and Asia until the end of the 1980s. As of today, we can talk about a high-speed railway that continues to develop in the continents of Africa, Asia and the Americas around the world. At this point, one of the most significant factors in railways, in particular high-speed railways, is planning. Planning determines the effect of the railway on the economy, as well. Within this scope, with the proper planning of transportation investments, our country and the region …

Roof Surface Color And Its Influence On Indoor Temperature, Jana Šabíková, Lucia Krčmárová

Journal of Sustainable Construction Materials and Technologies

The paper presents results of simplified small-scale modelling of three buildings with different roof colour - covering. The aim of the measurement is to compare the influence of different roof covering (material, colour) onto the indoor temperature. The models are very simplified, used only to compare results among themselves, especially heat gains via conduction, and not between models and the real buildings under real conditions.