Engineering Commons^™

Computational Study Of Mos2/Hfo2 Defective Interfaces For Nanometer-Scale Electronics, Santosh Kc, Roberto Longo, Robert Wallace, Kyeongjae Cho

Faculty Publications

Atomic structures and electronic properties of MoS2/HfO2 defective interfaces are investigated extensively for future field-effect transistor device applications. To mimic the atomic layer deposition growth under ambient conditions, the impact of interfacial oxygen concentration on the MoS2/HfO2 interface electronic structure is examined. Then, the effect on band offsets (BOs) and the thermodynamic stability of those interfaces is investigated and compared with available relevant experimental data. Our results show that the BOs can be modified up to 2 eV by tuning the oxygen content through, for example, the relative partial pressure. Interfaces with hydrogen impurities as well as various structural disorders …

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• Six New Programs for CEIT

Hysteresis Heating Of Railroad Bearing Thermoplastic Elastomer Suspension Element, Oscar O. Rodriguez, Arturo A. Fuentes, Constantine Tarawneh, Robert E. Jones

Mechanical Engineering Faculty Publications

Thermoplastic elastomers (TPE’s) are increasingly being used in rail service in load damping applications. They are superior to traditional elastomers primarily in their ease of fabrication. Like traditional elastomers they offer benefits including reduction in noise emissions and improved wear resistance in metal components that are in contact with such parts in the railcar suspension system. However, viscoelastic materials, such as the railroad bearing thermoplastic elastomer suspension element (or elastomeric pad), are known to develop self-heating (hysteresis) under cyclic loading, which can lead to undesirable consequences. Quantifying the hysteresis heating of the pad during operation is therefore essential to predict …

Nanomaterials As Stationary Phases And Supports In Liquid Chromatography: A Review, Sandya Beeram, Elliott Rodriguez, Suresh Doddavenkatanna, Zhao Li, Allegra Pekarek, Darin Peev, Kathryn Goerl, Gianfranco Trovato, Tino Hofmann, David S. Hage

David Hage Publications

The development of various nanomaterials over the last few decades has led to many applications for these materials in liquid chromatography (LC). This review will look at the types of nanomaterials that have been incorporated into LC systems and the applications that have been explored for such systems. A number of carbon-based nanomaterials and inorganic nanomaterials have been considered for use in LC, ranging from carbon nanotubes, fullerenes and nanodiamonds to metal nanoparticles and nanostructures based on silica, alumina, zirconia and titanium dioxide. Many ways have been described for incorporating these nanomaterials into LC systems. These methods have included covalent …

Bioreactor Design For Viable Recellularization Of Whole Porcine Kidney, Kennedy Wandelt, Dr. Alonzo Cook

Journal of Undergraduate Research

Kidney failure affects tens of thousands of individuals annually causing many to rely on dialysis to replace this organ’s function. Most of these individuals are on a waiting list to receive a transplant for years, and unfortunately many die before they are able to reach the top of the list. The bodies of those who do receive kidneys often reject the organs. This rejection can have devastating defects, including mortality. In an effort to change this ongoing cycle we have been researching the idea of creating organs synthesized with the DNA of each specific patient. The process would significantly increase …

Toward Quality Attribute Driven Approach To Software Architectural Design, Payel Bajpayee, Hassan Reza

Computer Science Faculty Publications

It has been well-documented that the software architecture of any system plays a critical role in success or failure of software intensive systems. In this paper, a method has been proposed to evaluate the software architecture’s fitness with respect to key quality attributes for a web-based system. To the end, a comparative analysis based on quality attributes scenarios and tactics is carried out to select an optimal software architecture that meets the system level requirements of a web-based system, namely, Student and Course Evaluation System (SCES). The comparative study was driven by study of quality attributes and tactics with the …

Multi-Robot Cluster Control, Ethan Head, Addison Fattor

Electrical and Computer Engineering Senior Theses

Robotic systems, when used in real world situations, often have many control modes that need to be switched between in real time. These control modes may be addressing the robots in many different ways and may be executing in different locations. Conventional robot control software platforms do not provide a flexible way of switching between all of the different types of control modes in real time. In this paper, we present a system architecture that seeks to solve this problem of real time controller switching using industry standard software. The architecture implemented is one that allows for robot control regardless …

Speed, Power Efficiency, And Noise Improvements For Switched Capacitor Voltage Converters, Orhun Aras Uzun

USF Tampa Graduate Theses and Dissertations

Switched-capacitor (SC) DC-DC converters provide a viable solution for on-chip DC-DC conversion as all the components required are available in most processes. However, power efficiency, power density characteristics of SC converters are adversely affected by the integration, and characteristics such as response time and noise can be further improved with an on-chip converter. An analysis on speed, power efficiency, and noise performance of SC converters is presented and verified using simulations. Based on the analysis two techniques, converter-gating and adaptive gain control, are developed. Converter-gating uses a combination of smaller stages and reconfiguration during transient load steps to improve the …

A-Z Database Discovery Using Alma: Eliminate Redundancy And Simplify Your Workflow, Travis Clamon

ETSU Faculty Works

Frustrated by having to maintain an A-Z databases list separately on our library website and in Alma/Primo, East Tennessee State University embarked on a goal to eliminate redundancy by using Alma as our primary source of metadata for eResources. This presentation will cover our entire workflow and the issues we encountered along the way. I'll first go over our process in Alma including MARC record creation, electronic collection setup, and the top level collection module. Next, I'll cover our workflow in Primo including normalization rules, scoping, and PNX display. The last section will cover the Alma API's and how they …

Opportunities And Benefits Of Commercial Truck Platooning, Greg Shaver, Katie England

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Capacity And Safety Opportunities And Challenges In The Transition Period, Andrew Tarko, Brad L. Steckler

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Materials And Maintenance Considerations For Infrastructure Critical To Connected And Autonomous Vehicles, Timothy Wells, Tony Mcclellan

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Indot 2017 Connected Vehicle Deployments On Us 30 And Us 31, John Mcgregor, Howell Li

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Geomatics Engineering And Autonomous Vehicles, Ayman Habib, Jim Sturdevant

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Field Testing In Peer States And Emerging Partnership Opportunities, Srinivas Peeta

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Connected And Autonomous Vehicle Summit, Jim Poturalski

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Purdue Connected Autonomous Transportation Initiative, Tomas Diaz De La Rubia

Indiana Connected and Autonomous Vehicle Summit

No abstract provided.

Multi-Bot Easy Control Hierarchy, Ryan Cooper, Marton Demeter, Jonathan Ho, Alan Nguyen

Computer Science and Engineering Senior Theses

The goal of our project is to create a software architecture that makes it possible to easily control a multi-robot system, as well as seamlessly change control modes during operation. The different control schemes first include the ability to implement on-board and off-board controllers. Second, the commands can specify either actuator level, vehicle level, or fleet level behavior. Finally, motion can be specified by giving a waypoint and time constraint, a velocity and heading, or a throttle and angle. Our code is abstracted so that any type of robot - ranging from ones that use a differential drive set up, …

Scudent Books: A University-Focused Bookselling Platform, Winston Chang, Christina Ciardella, Renee Prescilla

Computer Science and Engineering Senior Theses

As the beginning of each university semester or quarter commences, so does the rush to acquire books for classes. The search for school books is a busy and important task for many students. However, an entire slew of problems and frustrations emerge with this academic race to gather books. To begin, students have to deal with the traditional frustrations of expensive textbooks sold at the university bookstore which is especially troublesome for those on a tight budget. Additionally, required textbooks for classes may not be available at the bookstore or require restocking which can take an unknown amount of time. …

Smartmirror: A Glance Into The Future, Jason Chen, Matthew Koken

Computer Science and Engineering Senior Theses

In todays society, information is available to us at a glance through our phones, our laptops, our desktops, and more. But an extra level of interaction is required in order to access the information. As technology grows, technology should grow further and further away from the traditional style of interaction with devices. In the past, information was relayed through paper, then through computers, and in todays day and age, through our phones and multiple other mediums. Technology should become more integrated into our lives - more seamless and more invisible. We hope to push the envelope further, into the future. …

Low Cost Sms-Enabled Ekg For Use In Developing Countries, Gabriel Christ, Shachi Kakkar, Michael Mcelroy, Augustus Boling

Interdisciplinary Design Senior Theses

According to official estimates, cardiovascular disease will become the leading cause of death in the developing world by 2020 [1]. This makes regular screening and early detection a priority for these regions. At present, such screening relies on stationary electrocardiogram (ECG) machines, but this technology has several drawbacks. Most machines are costly, stationary, and require a physician onsite to collect and interpret the data; as a result many isolated rural communities lack access to basic heart disease screening. In order to better meet the screening needs of these populations, we propose a twopart solution involving a simplified, inexpensive ECG device …

Hybrid Fuzzy Logic And Extremum Seeking Attitude Control Of Solar Sail Spacecraft, Nikolai Kalnin

Mechanical Engineering Master's Theses

This thesis explores four controllers applied to the attitude control of a solar sail craft with control masses with the goal of showing benefits over more standard control schemes. The controllers examined in this paper are: 1) a PID controller that incorporates a discrete extremum seeking algorithm, 2) a type-1 fuzzy logic controller that incorporates a discrete extremum seeking algorithm, 3) a type-1 fuzzy logic controller, and 4) a type-2 fuzzy logic controller. The first two controllers are examined for their ability to quickly converge to a set of optimal gains over time. The latter two controllers are evaluated for …

Human-Powered Concrete Mixer, Connor Mcloughlin, Nathan Metzger, Nicholas Szychowski, Madelyn Bustard-Gustafson

Mechanical Engineering Senior Theses

There are currently many non-profit organizations and social enterprises working to alleviate the hardships of living in a developing economy, such as lack of proper homes, schooling, and bathrooms. The solutions to these problems rely on concrete, and are currently limited by the mixing time for these batches of concrete in rural and remote areas. Mixing with shovels is inefficient and imprecise, and the possible solution of a portable gas-powered concrete mixer is too expensive and too immobile for remote areas. The Human-Powered Concrete Mixer (HPCM) provides an alternative to these methods that is more efficient and more precise than …

Exosome Membrane Bound Tnf-Receptor For The Treatment Of Rheumatoid Arthritis, Natalie Duong, Kevin Curley

Bioengineering Senior Theses

Rheumatoid arthritis (RA) is an autoimmune disease that causes painful inflammation of the synovium of the patient’s joints. However, current treatments for RA have a variety of drawbacks. They often are ineffective, expensive, invasive, risky, cause an immune response, and/ or only provide short term relief. Thus, we developed a new treatment for preventing inflammation: TNF-receptors anchored onto exosome surfaces. Exosomes are nanovesicles that are naturally secreted by most of the cells in our bodies. The many benefits of using exosomes include non-immunogenicity, natural stability in the body, and non-invasiveness. We have demonstrated that exosome membrane bound TNF-receptors have the …

Machine Learning Offers Predictive Insight Into The Silver Nanomaterial Protein Corona, Matthew Findlay

Bioengineering Senior Theses

The use of engineered nanomaterials (ENMs) in consumer and commercial products is increasing rapidly. The small size and high surface reactivity of ENMs gives them a range of attractive properties, and allows them to be incorporated into various materials. These properties make ENMs very appealing to modern industry, but also make ENMs toxic, causing serious health and environmental concerns. This toxicity is largely driven by the formation of a protein corona on the surface of ENMs. This protein corona is caused by proteins encountered in biological systems that bind to the surface of (ENMs). Despite the importance of the protein …

John Brown University Disaster Shelter Competition, Julia Anderson, Katie Bipes, Antonio Gonzalez, Danny O’Malley, Colin Skaggs, La’Akea Warren

Civil, Environmental and Sustainable Engineering Senior Theses

John Brown University hosted the 6th annual Disaster Shelter Relief Competition in April 2017 for which the team built a prototype shelter and proposed a camp plan. Both the shelter and the camp plan were designed to house refugees coming into Greece from the Middle East. The shelter would accommodate a family of four and the camp plan was designed to hold 1250 shelters, or 5000 people. The shelter was built on site at John Brown University and was required to take less than two hours to fully construct. This report summarizes the work the team did for the competition, …

Smart And Sustainable Aquaponics, Ryan Toal, Kevin Claggett, Justin Goh

Electrical and Computer Engineering Senior Theses

As the global population increases, new ways of sustainable and efficient food production need to be explored in order to meet the growing demand from society. In this paper we explore the methods and functionality of an off-grid, semi-autonomous aquaponics system. This system will serve as a proof of concept for a large scale aquaponics system which can be modelled in other parts of the world where arable land is scarce. It was found that though the initial startup costs are high, it will be able to reduce the cost of food in the long run. The system implements a …

Waterless Light Fountain, Lucas Villalba Eirea

Electrical and Computer Engineering Senior Theses

The Waterless light fountain is born from the need for art projects for Franklin street in Santa Clara University than is going to be remodeled into an arts and history paseo, one of the ideas discussed was to determine if there may be a way to develop a waterless light fountain that could be displayed either on a temporary or permanent basis. In this paper, we will explain the design process and build of the fountain, using Neopixels (RGB LEDs) to generate the light used as the main art element. An Arduino is used as the control unit, controlling the …

Development And Physicochemical Characterization Of Acetalated Dextran Aerosol Particle Systems For Deep Lung Delivery, Zimeng Wang, Sweta K. Gupta, Samantha A. Meenach

Chemical, Biomolecular, and Materials Engineering Faculty Publications

Biocompatible, biodegradable polymers are commonly used as excipients to improve the drug delivery properties of aerosol formulations, in which acetalated dextran (Ac-Dex) exhibits promising potential as a polymer in various therapeutic applications. Despite this promise, there is no comprehensive study on the use of Ac-Dex as an excipient for dry powder aerosol formulations. In this study, we developed and characterized pulmonary drug delivery aerosol microparticle systems based on spray-dried Ac-Dex with capabilities of (1) delivering therapeutics to the deep lung, (2) targeting the particles to a desired location within the lungs, and (3) releasing the therapeutics in a controlled fashion. …

Techno-Economic Analyses Of Large-Scale Electric Vehicle Systems, Florida Solar Energy Center, Zhihua Qu

FSEC Energy Research Center®

This project developed the process, methodology and algorithms for computer models to evaluate the techno-economic implications of a large-scale electrified transportation sector. The model factors include developing and interacting with a network of electric vehicles and the electric grid, the infrastructure for electric vehicle charging, integrating the transportation and power systems into the urban setting, studying the impact of distributed energy storage and determining the economic impact of increased renewable energy and EVs on the electricity grid and its stability. The modeling related project results are presented in five journal articles and two conference papers. In this final report, the …