Digital Commons Network^™

Development Of Design Method For Fiber Reinforced Slab On Ground, Abdullah Albogami

Theses and Dissertations

All the present methods of designing the slab-on-ground (SOG) are based on the flexural slab capacity (FSC) to determine the required thickness by calculating the modulus of rupture (MOR) of the concrete beam, depending on ASTM C78 or AASHTO T 97 specifications. All previous experimental results have confirmed that the MOR is much lower than the FSC and it cannot be used to predict FSC accurately. Hence, using the MOR to predict the FSC would lead to the underestimation of FSC and require more unnecessary thickness. Therefore, this study aims to develop accurate equation for estimating the FSC based on …

Development Of A Pediatric Heart Assist Device Monitoring System, Natalie Hill

Theses and Dissertations

Heart failure (HF) is one of the leading causes of deaths for adults worldwide, but has disproportionately significant effects on pediatric patients that are often overshadowed. Treatment options for pediatric patients with HF are extremely limited, resulting in increased mortality rates within hospitals. Patients often depend on ventricular assist device (VAD) support as a bridge to transplant. The Berlin Heart EXCOR is the only FDA approved device for pediatric use in the US. However, many hemodynamic and neurological complications continue to arise; for instance, up to 30% of EXCOR patients suffer from stroke. Currently, there is no effective way to …

Water-Soluble Iron Porphyrin Complex For The Catalytic N-Dealkylation Of Fentanyl, Amanda Pitt

Theses and Dissertations

An increase in the misuse of opioids in the United States and the increasing potency of analogs necessitates novel treatments of opioid overdose. The chemical structure of synthetic opioids, such as fentanyl, carfentanil, and morphine possess a trialkyl amine functional group (-NR3) which makes for a promising target for potential catalysts. Iron (III)-tetrasulfonatophenyl porphyrin (complex 9) was synthesized as a potential catalyst for degradation of fentanyl. Complex 9a was prepared from the direct reaction of the free porphyrin and FeSO4. Complex 9b was prepared from the direct reaction of the free porphyrin and FeCl2 in refluxing DMF. The complexes were …

Development Of A Customizable Framework For Data Driven Hemodynamic Analysis With Applications In Neurovascular And Cardiovascular Scenarios, Rachel Mae Hillner

Theses and Dissertations

Cardiovascular disease, including but not limited to heart failure and aneurysms, remain a leading cause of death worldwide. Persons over the age of 40 experience upwards of a 20% chance of developing heart failure in their lifetime. With a decrease in viable donor hearts, the reliance on mechanical heart assist devices is on the rise. However, such devices are not without their complications. Specifically, for left heart failure, a common treat, the left ventricular assist device, is characterized by clotting, stroke, and low survival rates as a result. Many studies suggest that such unfavorable results are correlated to adverse hemodynamic …

A Reduced Order Model For Estimation Of Fractional Flow Reserve (Ffr) In Coronary Artery Disease: Assessing The Impact Of Side Branches, Arber Vila

Theses and Dissertations

Coronary Artery Disease (CAD) affects millions of people worldwide and remains a leading cause of morbidity and mortality. To effectively plan treatment and risk stratification, assessing CAD severity is of paramount importance. Fractional flow reserve (FFR) is a critical clinical parameter used to evaluate CAD severity, measured by the ratio of mean distal coronary pressure to mean aortic pressure during hyperemic conditions. Although non-invasive FFR estimation methods have gained popularity, computational fluid dynamics (CFD) is impractical for routine clinical use due to the time and resources required. To address this issue, a reduced order model is proposed that accurately captures …

Self-Assembly Of Exfoliated Graphene Flakes As Anticorrosive Coatings For Additive Manufactured Steels, Kaleb Hood, Wen Qian, Savannah Krupa, Annie Dao, Sarah Ahmed, Samuel Olson, Jun Jiao, Multiple Additional Authors

Mechanical and Materials Engineering Faculty Publications and Presentations

This study demonstrates the feasibility of using liquid exfoliation of expandable graphite into multilayer exfoliated graphene flakes (EGFs) to form a self-assembled thin film on an air–water interface. The film can coat the surface of additive manufactured (AM) steel substrates to enhance surface properties, specifically AM 316 stainless-steel (AM316), AM 8620 steel (AM8620), and samples of the same alloys made by conventional manufacturing (CM) processes. Liquid exfoliation offers a high yield route for an EGF coating that can cover up to 95% of the sample surface with a single application. The thin, flexible EGFs can coat a rough AM metal …

Direct Spectroscopic Observation Of Cross-Plane Heat Transfer In A Two-Dimensional Van Der Waals Heterostructure, Du Chen, Matthieu Fortin-Deschênes, Yuchen Lou, Huiju Lee, Kenji Watanabe, Takaaki Taniguchi, Fengnian Xia, Peijun Guo, Multiple Additional Authors

Mechanical and Materials Engineering Faculty Publications and Presentations

Two-dimensional (2D) transition metal chalcogenides (TMDs) have drawn significant attention in recent years due to their extraordinary optical and electronic properties. As heat transfer plays an important role in device performance, various methods such as optothermal Raman spectroscopy and time-domain thermoreflectance have been developed to measure the thermal conductivity and interfacial thermal conductance in 2D van der Waals (vdW) heterostructures. Here, we employ the vibrational-pump-visible-probe (VPVP) spectroscopy to directly visualize the heat transfer process in a heterostructure of multilayer h-BN and monolayer WS2. Following an impulsive vibrational excitation of h-BN in the mid-infrared, we probe the heat transfer …

Flow Development And Entrainment In Turbulent Particle-Laden Jets, Laura K. Shannon, Bianca Viggiano, Raúl Bayoán Cal, L. G. Mastin, Alexa R. Van Eaton, Stephen Solovitz

Mechanical and Materials Engineering Faculty Publications and Presentations

Explosive eruptions expel volcanic gases and particles at high pressures and velocities. Within this multiphase fluid, small ash particles affect the flow dynamics, impacting mixing, entrainment, turbulence, and aggregation. To examine the role of turbulent particle behavior, we conducted an analogue experiment using a particle-laden jet. We used compressed air as the carrier fluid, considering turbulent conditions at Reynolds numbers from approximately 5,000 to 20,000. Two different particles were examined: 14-μm diameter solid nickel spheres and 13-μm diameter hollow glass spheres. These resulted in Stokes numbers between 1 and 35 based on the convective scale. The particle mass percentage in …

“Brute Force Teacher”: Outlasting The Turbulent Cycle Of Teacher Turnover, Anne Marie Light

Education Policy and Leadership Theses and Dissertations

The purpose of this study is to debunk negative stereotypes that surround educators in urban schools and depict how high-performing veteran teachers became the resilient educators they are now. Teachers are the greatest determiner of student success (Marzano et al., 2001). Therefore, understanding our highest-performing teachers in our schools is imperative. Skaalvik and Skaalvik (2011) found that a staggering percentage of the teachers who entered the field left within their first three to five years of teaching. Understanding our highest performing teachers with five plus years of experiences through research is necessary.

This generic qualitative study utilized Polidore’s Theoretical Model …

An International Expert Delphi Consensus On Defining Textbook Outcome In Liver Surgery (Tols), Horacio Asbun

All Publications

Objective: To reach global expert consensus on the definition of TOLS in minimally invasive and open liver resection among renowned international expert liver surgeons using a modified Delphi method.

Background: Textbook outcome is a novel composite measure combining the most desirable postoperative outcomes into one single measure and representing the ideal postoperative course. Despite a recently developed international definition of Textbook Outcome in Liver Surgery (TOLS), a standardized and expert consensus-based definition is lacking.

Methods: This international, consensus-based, qualitative study used a Delphi process to achieve consensus on the definition of TOLS. The survey comprised 6 surgical domains with a …

Systemic Risk Analysis Of Human Factors In Phishing, Mark Guilford

Engineering Management & Systems Engineering Theses & Dissertations

The scope of this study is the systemic risk of the role of humans in the risk of phishing. The relevance to engineering managers and systems engineers of the risks of phishing attacks is the theft of data which has significantly increased in the past couple of years. Phishing has become a systemic persistent threat to all internet users. Understanding the role of humans in phishing from a systemic perspective is a critical objective towards creating a strong defense against complex and manipulative phishing attacks. The systemic view of phishing concentrates on how phishing affects the entire organizational system, not …

A Neutrosophic Evaluation Method Of Engineering Certification Teaching Effect Based On Improved Entropy Optimization Model And Its Application In Student Clustering, Jingyuan Li, Fangwei Zhang, Y Jun, Yuanhong Liu, Jianbiao Hu

Neutrosophic Sets and Systems

No abstract provided.

Analysis Of Teaching-Learning Efficiency Using Attribute Based Double Bounded Rough Neutrosophic Set Driven Random Forests, B Praba, Balambal Suryanarayanan, D. Nagarajan, Said Broumi

Neutrosophic Sets and Systems

No abstract provided.

Generalized Owa Operator Of Orthopair Neutrosophic Numbers And Their Application In Multiple Attribute Decision-Making Problems, Jiancheng Chen, Jun Ye, Angyan Tu

Neutrosophic Sets and Systems

No abstract provided.

Neutrosophic Speech Recognition Algorithm For Speech Under Stress By Machine Learning, D. Nagarajan, S. Broumi, Florentin Smarandache

Neutrosophic Sets and Systems

No abstract provided.

Water Quality Evaluation Using Generalized Correlation Coefficient For M-Polar Neutrosophic Hypersoft Sets, Muhammad Saqlain, Muhammad Riaz, Natasha Kiran, Poom Kumam, Miin-Shen Yang

Neutrosophic Sets and Systems

No abstract provided.

Madm For Assessment The Nurses Knowledge And Their Attitudes During Covid-19 Spread In Mosul City In The Perspective Of Neutrosophic Environment, Ihsan H. Zainel, Huda E. Khalid

Neutrosophic Sets and Systems

No abstract provided.

Expression And Analysis Of Scale Effect And Anisotropy Of Joint Roughness Coefficient Values Using Confidence Neutrosophic Number Cubic Values, Zhenhan Zhang, Jun Ye

Neutrosophic Sets and Systems

No abstract provided.

Novel Subsethood Measures For Totally Dependentneutrosophic Sets And Their Usage In Multiple Attribute Decision-Making, Sait Gül, Ali Aydoğdu

Neutrosophic Sets and Systems

No abstract provided.

Theory On Duplicity Of Finite Neutrosophic Rings, T. Chalapathi, K. Kumaraswamy Naidu, D. Harish Babu, F. Smarandache

Neutrosophic Sets and Systems

No abstract provided.

An Integrated Model For Ranking Risk Management In Industrial Internet Of Things (Iiot) System, Abdullah Ali Salamai

Neutrosophic Sets and Systems

No abstract provided.

An Asymmetric Measure Of Comparison Of Neutrosophic Sets, Surender Singh, Sonam Sharma

Neutrosophic Sets and Systems

No abstract provided.

On Novel Hellinger Divergence Measure Of Neutrosophic Hypersoft Sets In Symptomatic Detection Of Covid-19, Himanshu Dhumras, Rakesh Kumar Bajaj

Neutrosophic Sets and Systems

No abstract provided.

Neutrosophic Fuzzy Ideals In �� Rings, P Durgadevi, Ezhilmaran Devarasan

Neutrosophic Sets and Systems

No abstract provided.

A Comparative Study Of Fuzzy Cognitive Maps And Neutrosophic Cognitive Maps On Covid Variants, Regan Murugesan, Yamini Parthiban, R. Narmada Devi, Kala Raja Mohan, Sathish Kumar Kumarave

Neutrosophic Sets and Systems

No abstract provided.

A Study On N-Hyperspherical Neutrosophic Matrices, V. Muthukumaran, M. Sathish Kumar, I. Silambarasan, R. Udhayakumar, Said Broumi

Neutrosophic Sets and Systems

No abstract provided.

Decision-Making Techniques Based On Similarity Measures Of Possibility Neutrosophic Soft Expert Sets, Faisal Al-Sharqi, Yousef Al-Qudah, Naif Alotaibi

Neutrosophic Sets and Systems

No abstract provided.

A Total Order On Single Valued And Interval Valued Neutrosophic Triplets, V Lakshmana Gomathi Nayagam, Bharanidharan R

Neutrosophic Sets and Systems

No abstract provided.

Neutrosophic 2−Normed Spaces And Generalized Summability, Sajid Murtaza, Archana Sharma, Vijay Kumar

Neutrosophic Sets and Systems

No abstract provided.

New Approach To Bisemiring Theory Via The Bipolar Valued Neutrosophic Normal Sets, M. Palanikumar, G. Selvi, Ganeshsree Selvachandran, Sher Lyn Tan

Neutrosophic Sets and Systems

No abstract provided.