Engineering Commons^™

Role Of Occupational Therapy Assessment And Office Ergonomics To Support Students With Accommodations In Higher Learning: A Narrative Review, Behdin Nowrouzi-Kia, Christi Tam, Raabia Khan, Bushra Alam, Sujatha Alla

Engineering Management & Systems Engineering Faculty Publications

Postsecondary students with disabilities (SWDs) face significant challenges to their academic and personal well-being. There is a demand for more supportive strategies to facilitate fulfilling and equitable academic experiences for SWDs. This review aimed to (1) determine the effectiveness of various interventions, programs, and accommodations for enhancing the overall well-being of postsecondary SWDs and (2) evaluate the implications of these support strategies for disability service providers at postsecondary institutions. A narrative review was conducted, examining 13 studies aimed at enhancing the well-being of postsecondary SWDs. Studies were classified using the International Classification of Functioning, Disability and Health (ICF) Model. Ergonomics, …

Reinforcement Learning For Optimal Kicking Actions In Humanoid Robotics: Advancing Robotic Autonomy And Versatility, Suresh Dodda, Sathish Kumar Chintala, Sukender Reddy Mallreddy, Sharath Chandra Macha, Yashwanth Vasa, Sapan Bharadwaj Bonala, Navin Kamuni, Sujatha Alla

Engineering Management & Systems Engineering Faculty Publications

Acquiring the necessary skills to perform a work effectively and efficiently requires a significant investment of time and computing power. Previous applications of Reinforcement Learning (RL) for action optimization in humanoid robotics have shown how promising this technology is for moving robotics towards true autonomy and versatility. Therefore, this study offers the first use of RL to create an entirely optimal kicking action for the Alderbaran Nao robot. Kicking motions that were steady, precise, quick, and able to kick farther than any existing RoboCup squad were generated by optimizing for a multi-objective reward function. We demonstrate that the ideal kicking …

Data Driven Trade-Off Analysis For Cybersecurity, Goskel Kucukkaya, Murat Ozer, Murat Balci, Emrah Ugurlu

Engineering Management & Systems Engineering Faculty Publications

Trade-off analysis, a specialization of systems engineering, addresses design criteria like security, cost, performance, and compliance. Monte Carlo simulations are commonly employed to generate impact scenarios for trade-off analysis combined with solution alternatives that accommodate industry-specific considerations and uncertainties. In the cyber domain, this paper proposes a methodology for data-driven trade-off analysis in cybersecurity, leveraging industry reports as primary data sources using confidentiality, integrity, and availability as trade-off analysis objectives. Distribution functions are derived to manage and model uncertainties for various industries. The approach given in this study aims to facilitate informed choices and to enhance cybersecurity decision making and …

Engineering Management And Industrial Engineering Industry And Educational Workforce Development Strategy, Robert J. Gies, Resit Unal, Charles B. Keating

Engineering Management & Systems Engineering Faculty Publications

This paper provides an overview of the development and resulting product of a collaborative industry-academia engineering management and industrial engineering workforce development strategy. In the spring of 2017, Old Dominion University's (ODU) Engineering Management and Systems Engineering Department (EMSE) approached Newport News Shipbuilding (NNS) with a concept to develop an educational initiative to support the preparation and development of the future workforce. The concept came to fruition over the next two years as a certification program in Engineering Systems and Industrial Engineering for NNS working professionals. This paper examines the primary aspects of the development of the certification program. Emphasis …

System Of Systems Engineering: A Literature Review And Research Frontiers, Charles B. Keating, Polinpapilinho F. Katina, James C. Pyne

Engineering Management & Systems Engineering Faculty Publications

System of Systems Engineering (SoSE) has existed and been developing for well over 2 decades. The time is appropriate to take a reflective look at the past and examine the future evolution of this nascent field. To address this challenge, this paper is focused on two primary objectives. First, a literature review of the SoSE field is conducted. This literature review (1) organizes the SoSE body of knowledge and provides a synthesis of major crosscutting themes, and (2) provides a scholarly critique and identifies gaps in the current state of the SoSE field. The second objective is focused on providing …

Navigating The Complexities Of Engineering Management: Insights Into Metrics, Measurements, And Pitfalls, Charles Daniels

Engineering Management & Systems Engineering Faculty Publications

In the realm of Engineering Management, the reliance on metrics and measurements stands as a cornerstone for effective decision-making processes. These quantitative tools offer insights into performance dynamics and facilitate informed strategic choices. However, the uncritical application of metrics devoid of profound domain expertise presents significant challenges. This abstract explores the pitfalls inherent in utilizing metrics and measurements within Engineering Management without comprehensive understanding, emphasizing the potential consequences and proposing strategies for navigating this complex terrain.

Effect Of Water Vapor Desorption On The Performance Of Gallium Nitride Field Emitter Array, Ranajoy Bhattacharya, Pao-Chuan Shih, Tomás Palacios, Jim Browning

Electrical and Computer Engineering Faculty Publications and Presentations

We are exploring the potential of gallium nitride (GaN) field emitter arrays in vacuum channel transistors. This study investigated the impact of ultraviolet (UV) light on the emission properties of large arrays of GaN field emitters. Arrays of 150 × 150 emitters were analyzed before and after UV exposure. With a constant collector voltage of 200 V DC, gate voltage sweeps from 0 to 60 V were applied. The initial I–V measurements showed a rapid increase in emission current, indicating a conditioning effect, settling at a stable value of 1.25 μA after three to five sweeps. Remarkably, exposure to …

A Systematic Review Of Phenotypic And Epigenetic Clocks Used For Aging And Mortality Quantification In Humans, Brandon Warner, Edward Ratner, Anirban Datta, Amaury Lendasse

Engineering Management and Systems Engineering Faculty Research & Creative Works

Aging is the leading driver of disease in humans and has profound impacts on mortality. Biological clocks are used to measure the aging process in the hopes of identifying possible interventions. Biological clocks may be categorized as phenotypic or epigenetic, where phenotypic clocks use easily measurable clinical biomarkers, and epigenetic clocks use cellular methylation data. In recent years, methylation clocks have attained phenomenal performance when predicting chronological age and have been linked to various age-related diseases. Additionally, phenotypic clocks have been proven to be able to predict mortality better than chronological age, providing intracellular insights into the aging process. This …

Exploring Service Quality Among Us Hajj Pilgrims In Compliance With Vision 2030 Objectives, Majid Abdulmalik Alshaibi

Graduate Thesis and Dissertation 2023-2024

Saudi Arabia is progressing with Vision 2030, an ambitious blueprint for economic variation, global connection, and improved quality of life. The Hajj pilgrimage is addressed by the Doyof Al Rahman Program (DARP), one of the vision's programs aiming to enhance the Hajj experience. The Hajj pilgrimage is one of the world's largest annual massive gatherings and it has already received increased attention from researchers combining elements of pilgrimage and tourism. This dissertation aims to explore Hajj service quality and pilgrims' satisfaction. To attain this objective, a narrative and systematic literature review was conducted to develop a framework with standardized …

Adaptive Beyond Von-Neumann Computing Devices And Reconfigurable Architectures For Edge Computing Applications, Mousam Hossain

Graduate Thesis and Dissertation 2023-2024

The Von-Neumann bottleneck, a major challenge in computer architecture, results from significant data transfer delays between the processor and main memory. Crossbar arrays utilizing spin-based devices like Magnetoresistive Random Access Memory (MRAM) aim to overcome this bottleneck by offering advantages in area and performance, particularly for tasks requiring linear transformations. These arrays enable single-cycle and in-memory vector-matrix multiplication, reducing overheads, which is crucial for energy and area-constrained Internet of Things (IoT) sensors and embedded devices.

This dissertation focuses on designing, implementing, and evaluating reconfigurable computation platforms that leverage MRAM-based crossbar arrays and analog computation to support deep learning and error …

Neurogaze In Virtual Reality: Assessing An Eeg And Eye Tracking Interface Against Traditional Virtual Reality Input Devices, Wanyea Barbel

Graduate Thesis and Dissertation 2023-2024

NeuroGaze is a novel Virtual Reality (VR) interface that integrates electroencephalogram (EEG) and eye tracking technologies to enhance user interaction within virtual environments (VEs). Diverging from traditional VR input devices, NeuroGaze allows users to select objects in a VE through gaze direction and cognitive intent captured via EEG signals. The research assesses the performance of the NeuroGaze system against conventional input devices such as VR controllers and eye gaze combined with hand gestures. The experiment, conducted with 20 participants, evaluates task completion time, accuracy, cognitive load through the NASA-TLX surveys, and user preference through a post-evaluation survey. Results indicate that …

Production Of Hydrogen From Sodium Borohydride Using Bimetal Catalyst, Haitham I. Attia, Hani Mahanna, M.M. El-Halwany, Mahmoud H Mahmoud

Mansoura Engineering Journal

Here, in this paper we try to focus on the bi-metal non-semiconductor photo catalyst for the Production of hydrogen from sodium borohydride instead of semi conductor photo catalyst which have an excellent performance in photo-catalysis. In this paper , we studied the combination of CuNi bi-metal(developed and reinforced on MWCNTs) as a non-semiconductor photo-catalyst that generates electrons for the Production of hydrogen from sodium borohydride with led light as source of light , We also added CuNi on multi wall carbon nano tubes (MWCNTs) for increasing the surface area of the reaction. We studied the effect of different quantity of …

Assessing The Utilization Of Glazing Types And Alternatives In Office Buildings To Reduce Energy Consumption And Carbon Emissions, Eman Badawy Ahmed

Mansoura Engineering Journal

According to Egypt's Vision 2030 and the recommendations of the Climate Conference, Cop 27, Egypt seeks to reduce energy consumption and emissions, especially carbon, by calculating the carbon footprint and moving towards issuing carbon certificates.
The elements of the building envelope have a strong impact on energy consumption and carbon emissions. Glass is one of the most influential elements. Therefore, it is necessary to study the effect of glassing on energy consumption.
The study aims to evaluate the use of glazing types and their alternatives to reduce energy and carbon consumption in administrative buildings by developing an estimation approach for …

Addressing Challenges In Utilizing Gpus For Accelerating Privacy-Preserving Computation, Ardhi Wiratama Baskara Yudha

Graduate Thesis and Dissertation 2023-2024

Cloud computing increasingly handles confidential data, like private inference and query databases. Two strategies are used for secure computation: (1) employing CPU Trusted Execution Environments (TEEs) like AMD SEV, Intel SGX, or ARM TrustZone, and (2) utilizing emerging cryptographic methods like Fully Homomorphic Encryption (FHE) with libraries such as HElib, Microsoft SEAL, and PALISADE. To enhance computation, GPUs are often employed. However, using GPUs to accelerate secure computation introduces challenges addressed in three works.

In the first work, we tackle GPU acceleration for secure computation with CPU TEEs. While TEEs perform computations on confidential data, extending their capabilities to GPUs …

Internet-Of-Things Privacy In Wifi Networks: Side-Channel Leakage And Mitigations, Mnassar Alyami

Graduate Thesis and Dissertation 2023-2024

WiFi networks are susceptible to statistical traffic analysis attacks. Despite encryption, the metadata of encrypted traffic, such as packet inter-arrival time and size, remains visible. This visibility allows potential eavesdroppers to infer private information in the Internet of Things (IoT) environment. For example, it allows for the identification of sleep monitors and the inference of whether a user is awake or asleep.

WiFi eavesdropping theoretically enables the identification of IoT devices without the need to join the victim's network. This attack scenario is more realistic and much harder to defend against, thus posing a real threat to user privacy. However, …

Novel Phase Shifters Using Reconfigurable Filters, Georgiy Brussenskiy

Graduate Thesis and Dissertation 2023-2024

Phase shifters play a crucial role in radar, satellite communications, and 5G networks. Recently, the idea of using filters as phase shifters have attracted much interest due to providing many benefits such as smaller area, lower noise figure, easier fabrication method as compared with other technologies, reduced cost, and the ability to work as multi-functioning device. This work focuses on the implementation of bandstop-based and bandpass-based filtering phase shifters. For the bandstop-based approach, some of the resonating structures that were examined are stubs, LC tanks, L-shaped/U-shaped half wavelength resonators and many others. Periodic stub loading filter design method was compared …

Enhancing Scanning Tunneling Microscopy With Automation And Machine Learning, Darian Smalley

Graduate Thesis and Dissertation 2023-2024

The scanning tunneling microscope (STM) is one of the most advanced surface science tools capable of atomic resolution imaging and atomic manipulation. Unfortunately, STM has many time-consuming bottlenecks, like probe conditioning, tip instability, and noise artificing, which causes the technique to have low experimental throughput. This dissertation describes my efforts to address these challenges through automation and machine learning. It consists of two main sections each describing four projects for a total of eight studies.

The first section details two studies on nanoscale sample fabrication and two studies on STM tip preparation. The first two studies describe the fabrication of …

Response Characterization And Prediction Of Uhpc Flat Plates Subjected To Perpendicular Axisymmetric Concentrated Loads, Furkan Cakmak

Wayne State University Dissertations

A methodology is presented that accurately and consistently predicts the complete moment-curvature (M-χ) response of UHPC cross-sections. Furthermore, a computational framework is presented to characterize the response of UHPC flat plates subjected to perpendicular axisymmetric concentrated loads. The presented framework is concerned with the prediction of the complete flexural response and punching shear capacity of UHPC flat plates thus addressing two fundamental limit states related to the design of UHPC flat plates. Guidance is provided for how to convert continuous flat plates supported by discrete columns into isolated plates supported by a single column in terms of plate dimensions and …

Lidar Technology For Future Wireless Networks: Use Cases And Challenges, Omar Rinchi, Ahmad Alsharoa

Electrical and Computer Engineering Faculty Research & Creative Works

Next-generation wireless networks are beset with challenges such as line-of-sight (LoS) shadowing and multipath scattering, significantly impacting service quality and reliability. Despite technological advances aimed at mitigating these issues, achieving consistent quality of service (QoS) standards continues to be an uphill task, particularly within the ever-changing urban landscapes and the intricate process of melding new technologies with pre-existing infrastructures. This paper delves into the integration of light detection and ranging (LiDAR) sensors as a novel solution to these persistent problems. We explore two potential use cases of LiDAR integration in wireless networks, offering detailed insights into the underlying motivation, technical …

Generation Of Micro-Fracture Clouds In Rocks: Mechanisms And Applications, U. Mutlu, G. Boitnott, A. Lisjak, O. Mahabadi, Taghi Sherizadeh, D. Guner, S. Nowak, A. Ghassemi

Mining Engineering Faculty Research & Creative Works

Volume increasing or decreasing processes in rocks can lead to inter or intragranular fractures in subsurface formations. The volume change can be caused by chemical reactions involving fluid, reactive transport, and coupling with the mechanical deformation of the grains. Depending on stress, material properties and coupled thermo-hydro-mechanical-chemical (THMC) conditions, grain scale fractures may propagate and coalesce, forming a cloud of well-connected fracture networks. The mechanisms responsible for propagation, coalescence and inhibition of cloud fractures are not well known. In this study, we review coupled micro-fracture network generation mechanisms as published in the literature and observed in field, experiments, and models. …

Towards Performance Guarantee For Federated Computing, Stoddard A. Rosenkrantz

Computer Science and Engineering Dissertations - Archive

In federated computing environments, where multiple independent devices collaborate without centralized resource control, ensuring reliable and predictable performance is crucial for meeting Service Level Objectives (SLOs). This dissertation presents a novel framework for achieving SLOs by utilizing measured subtask response times, which are obtained and processed locally on the client devices. Each device generates a performance curve based on its subtask response times, and only the essential parameters of this curve are transmitted to a centralized client selector. The client selector then uses these parameters to determine which devices are best suited to meet predefined SLOs for specific tasks, ensuring …

Sustainable Additive Manufacturing Of Polysulfone Membranes For Liquid Separations, Brian Leonard, Harrison Loh, David Lu, Ebuka A. Ogbuoji, Isabel Escobar, Konstantinos Sierros, Oishi Sanyal

UK CARES Faculty Publications

Membranes serve as important components for modern manufacturing and purification processes but are conventionally associated with excessive solvent usage. Here, for the first time, a procedure for fabricating large area polysulfone membranes is demonstrated via the combination of direct ink writing (DIW) with non-solvent induced phase inversion (NIPS). The superior control and precision of this process allows for complete utilization of the polymer dope solution during membrane fabrication, thus enabling a significant reduction in material usage. Compared to doctor blade fabrication, a 63% reduction in dope solution volume was achieved using the DIW technique for fabricating similarly sized membranes. Cross …

Quantifying The Impact Of A Constructed Wetland On Downstream Nitrate Concentrations And Loads In The U.S. Midwest, Elliot Anderson, Keith E. Schilling, Craig L. Just, Bong Chul Seo

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Constructed wetlands are standard conservation practices used to reduce nitrate loads in agricultural watersheds. Many studies have examined the efficiency of denitrification in wetlands under various scenarios, but quantifying the watershed-scale impact of wetlands on downstream nitrate levels is rarely done using field observations. In this study, we estimated nitrate removal in a constructed wetland in the headwaters of Mud Creek, a HUC12 watershed in eastern Iowa, from May–September 2022 and May–September 2023 (a ten-month period). We also measured nitrate loads at four successive downstream sites, three along Mud Creek and one below its confluence with the larger Cedar River. …

Analysis Of Sediment-Discharge Hysteresis With The Interaction Of Hydrologic And Landscape Factors In The Upper Ping And Nan River Basin, Thailand, Soklin It

Chulalongkorn University Theses and Dissertations (Chula ETD)

Understanding landscape and climate influences on sediment transport is critical for managing river basins sustainably. This study investigates hydrological-sediment dynamics in the upper Ping and Nan River Basins in northern Thailand. The research focuses on three objectives: (1) identifying types and temporal trends of hysteresis between discharge and sediment concentration (Q–SSC); (2) quantifying interactions among hydrological and vegetation variables using Principal Component Analysis (PCA); and (3) analyzing structural relationships among climate, vegetation, and sediment transport through Partial Least Squares Structural Equation Modeling (PLS-SEM). Hysteresis analysis revealed significant spatial and temporal variability in sediment dynamics. The Ping River Basin (stations P.75, …

Table Of Contents, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Academy Presidents And Institutional Members, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Business Meeting Report (Secretary's And Treasurer's Report), Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Probable Extirpation Of The Jackrabbit (Lepus Californicus) From Arkansas, D.B. Sasse

Journal of the Arkansas Academy of Science

The black-tailed jackrabbit (Lepus californicus) was first documented in Arkansas during the modern era in Franklin County in 1927. Over the next few decades records were reported from multiple counties in northwest Arkansas and the species was locally common in Benton, Crawford, and Washington counties in the 1950s. The last Arkansas record documented in the scientific literature was from 1968 and since then there have only been three credible reports, with the last being from the late 1980s. The Arkansas Game and Fish Commission solicited reports of jackrabbits from the public and failed to find evidence of them from a …

A Review Of Herpetofaunal Distributions In Arkansas With Special Emphasis On Contributions From Citizen Science: Part I – Snakes, R. Jacobs, N. Ortiz, J. Jackson, J.D. Willson, K.G. Roberts, R. Kannan

Journal of the Arkansas Academy of Science

We present a comprehensive updated review of the distributions of the 38 species of snakes in Arkansas. We compare historical and current distributions with citizen science data uploaded and verified in iNaturalist, a leading biodiversity monitoring online citizen science database. The Arkansas Herpetological Atlas, a website maintaining species occurrence records, is also used and compared. We highlight the role played by iNaturalist in enhancing our knowledge of snake distributions in Arkansas. 10,885 verified and vetted Research Grade (RG) observations of Arkansas snakes have been recorded in iNaturalist, expanding the known distributions of 36 of the 38 species. This is the …

Ultrastructure Of The Biflagellated Spermatozoon In The Western Siren, Siren Nettingi (Caudata: Sirenidae), Using Scanning Electron Microscopy, S.E. Trauth

Journal of the Arkansas Academy of Science

I investigated the ultrastructure of the biflagellated spermatozoon of the Western Siren, Siren nettingi, using scanning electron microscopy from salamanders collected in northeastern Arkansas. My primary goal in this study was to reveal the general morphology of the distinctive sperm cell components (two axonemes, two undulating membranes, and two axial fibers), which run nearly the entire length of the spermatozoon. These remarkable gamete structures are found in members of the salamander family Sirenidae and do not conform to spermatozoal ultrastructure of any other salamander species. Moreover, the biflagellated sperm are the end product of an extraordinary assemblage of complex maturation …