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Articles 151 - 180 of 424

Full-Text Articles in Engineering

Application Of Net-Centric Communications For Disasters (Panel 1: First Responder), Norman Jones Aug 2021

Application Of Net-Centric Communications For Disasters (Panel 1: First Responder), Norman Jones

Online Journal of Space Communication

Norman Jones, Transformational Communications Engineering presents: Application of Net-Centric Communications for Disasters


Stream Sediment Monitoring In Morehead Kentucky, Kristopher Krolikowski, Jen O'Keefe Jul 2021

Stream Sediment Monitoring In Morehead Kentucky, Kristopher Krolikowski, Jen O'Keefe

2021 Celebration of Student Scholarship - Oral Presentations

Sediment loads in stream systems play a big role in how overall runoff behaves. Streams naturally transport sediment at various ratios depending on precipitation. When vegetation is removed in upstream environments, sediment loads on streams increase. Sudden increases of sediments in streams can cause many issues, such as flooding or stream re-direction. In Morehead, KY, large-scale logging operations on the ridge above Knapp Avenue and on the ridge above the north end of Allen Avenue have caused increased sediment load in a small stream called Oxley Branch. This stream flows south parallel to Knapp Avenue and along the eastern property …


Preventing Transmission Of Covid 19 In Hvac Duct Systems: Implementations Of Hvac System Design Upgrade, Jacob S. Lopez, Adama Barro Jun 2021

Preventing Transmission Of Covid 19 In Hvac Duct Systems: Implementations Of Hvac System Design Upgrade, Jacob S. Lopez, Adama Barro

Publications and Research

The recent pandemic outbreak has triggered a global alarm to increase efforts on finding the best methods to mitigate contagious viral pathogens. This project is a continuation of our mission to study engineering guidelines needed to implement upgrades to HVAC Systems in order to deter airborne pathogens such as the covid-19 virus. In our previous projects we researched how covid-19 can possibly flow through the ambient air inside of restaurants, office spaces, and locomotive train cabins. As we continued our research, we were able to find some solutions that will be best used to deactivate and prevent the virus from …


Perfromance Improvement Of High Bypass Turbofan Engine Through Optimization Of High-Pressure Compressor Blade – A Case Study, Vlad Mandzyuk May 2021

Perfromance Improvement Of High Bypass Turbofan Engine Through Optimization Of High-Pressure Compressor Blade – A Case Study, Vlad Mandzyuk

Symposium of Student Scholars

This research determines the relation between the High-Pressure Compressor (HPC) blade characteristics, compressor pressure ratio, and lift-to-drag ratio of a high bypass turbofan engine. Alterations in the HPC blades airfoil, span, chord, taper ratio, twist, aspect ratio, sweep, and angle of incidence are performed and their effect on the engine’s performance is observed. The metrics used to compare engine performance include thrust, specific thrust, exit velocity, fuel/air ratio, power, and efficiency. Parametric cycle analysis and computational fluid dynamics are performed to compare and validate findings. The goal of this study is to optimize the design of HPC to maximize the …


Do I Have Your Attention ? Predicting Users' Engagement During Interviews With Biofeedback, Voice, And Supervised Machine Learning, Thaide Huichapa May 2021

Do I Have Your Attention ? Predicting Users' Engagement During Interviews With Biofeedback, Voice, And Supervised Machine Learning, Thaide Huichapa

Symposium of Student Scholars

Studies show that the quality of the information collected during an elicitation interview, and consequently the quality of the software product that needs to be developed, highly depends on the interviewee's engagement. Because of social expectations, interviewees tend to hide if they are bored or not engaged. To overcome this problem and support the analyst during the interviews, this research uses biometric data and voice features, together with supervised machine learning algorithms, to predict the interviewee's engagement. We built our solution on an experiment consisted of interviewing 31 participants. We collected the data using an Empatica wristband and a default …


Classroom Room Acoustics And Effect On Speech With And Without Face Coverings In Direct And Reverberant Sound Fields, Danny Hernandez-Borjas May 2021

Classroom Room Acoustics And Effect On Speech With And Without Face Coverings In Direct And Reverberant Sound Fields, Danny Hernandez-Borjas

Symposium of Student Scholars

Prior to the COVID-19 pandemic, life consisted of seeing people in dense public areas such as malls, parks, and schools. But the life these people once knew has changed with face coverings becoming more prevalent in society along with social distancing which caused these public places to limit their capacity. However, a certain faction of society-this being students, have been affected immensely due to this transition of life at school which includes mandatory face coverings in the classroom and social distancing. This research focuses on the effects on speech with and without face coverings in a classroom setting in certain …


Data-Driven Indoor Localization In The Internet Of Things, Shervorn Mathews May 2021

Data-Driven Indoor Localization In The Internet Of Things, Shervorn Mathews

Publications and Research

Indoor localization is difficult because of issues regarding the physics of signal propagation and multipath interference. Satellite-based technologies such as Global Positioning Systems (GPS) are unreliable indoors due to the signal attenuation during propagation and the multi-path interference. A data-driven process using the massive amounts of data available in smart devices may be the solution to this problem as they don’t rely on sophisticated indoor propagation models like traditional methods. The emergence of methods in machine learning society can be used to fulfill this task. The objective is to estimate the location of a person in a room using Received …


Understanding Of Aerosol Transmission Of Covid 19 In Indoor Environment - Part 2: Approaches To Mitigation, Adama Barro, Cathal O'Toole, Jacob S. Lopez, Matthew Quinones, Sherene Moore May 2021

Understanding Of Aerosol Transmission Of Covid 19 In Indoor Environment - Part 2: Approaches To Mitigation, Adama Barro, Cathal O'Toole, Jacob S. Lopez, Matthew Quinones, Sherene Moore

Publications and Research

The challenge we face in implementing solutions for new HVAC ventilation and filtration design, is to effectively improve air quality for virus mitigation without losing performance efficiency. The purpose of this improvement is to decontaminate the occupied enclosed areas, reducing the transmission of the corona virus aerosol transmission. Our research seeks reliable approaches to mitigate the further spread of aerosol transmission in indoor spaces. The methodology is to examine innovative HVAC engineering solutions that combat epidemiological problems of Covid-19 for the post-pandemic era, by researching scholarly articles and ASHRAE journals. We are achieving the goal of finding highly efficient resolutions …


Student Academic Conference, Caitlin Brooks Apr 2021

Student Academic Conference, Caitlin Brooks

Student Academic Conference

No abstract provided.


Preliminary Analysis For A Campus-Wide Energy Prediction Strategy At Liberty University, Bethany Matsick, Hector Medina Apr 2021

Preliminary Analysis For A Campus-Wide Energy Prediction Strategy At Liberty University, Bethany Matsick, Hector Medina

Liberty University Research Week

Graduate

Three Minute Thesis


From Waste To Power: Efficient Conversion Of Human Waste To Usable Energy, Daniel Wilson, Wayne Strasser Apr 2021

From Waste To Power: Efficient Conversion Of Human Waste To Usable Energy, Daniel Wilson, Wayne Strasser

Liberty University Research Week

Graduate

Three Minute Thesis


Groundbreaking Self-Breathing Ventilator Investigation, Hayley Yukihiro, Wayne Strasser Apr 2021

Groundbreaking Self-Breathing Ventilator Investigation, Hayley Yukihiro, Wayne Strasser

Liberty University Research Week

Undergraduate

Three Minute Thesis


Implementing Gasification Of Organic Matter In Developing Countries, Nicholas Veeder, Wayne Strasser Apr 2021

Implementing Gasification Of Organic Matter In Developing Countries, Nicholas Veeder, Wayne Strasser

Liberty University Research Week

Undergraduate

Three Minute Thesis


Integrating Temperature Dependence Into A Microstructure-Sensitive Fatigue Model For Titanium Alloys, Jared Darius, Marcos Lugo Apr 2021

Integrating Temperature Dependence Into A Microstructure-Sensitive Fatigue Model For Titanium Alloys, Jared Darius, Marcos Lugo

Liberty University Research Week

Graduate

Three Minute Thesis


Developing Smart Simulations For Computational Fluid Dynamics Studies, Eric Turman, Wayne Strasser Apr 2021

Developing Smart Simulations For Computational Fluid Dynamics Studies, Eric Turman, Wayne Strasser

Liberty University Research Week

Graduate

Three Minute Thesis


Modeling A Novel Method To Diminish Covid-19 Transmission In A Hospital Room, Reid Prichard, Wayne Strasser Apr 2021

Modeling A Novel Method To Diminish Covid-19 Transmission In A Hospital Room, Reid Prichard, Wayne Strasser

Liberty University Research Week

Graduate

Three Minute Thesis


Smart Pacifier For Measuring Infant Bite Force, Greta Wilkins, Joshua Ingram, Aleck Tilbrook, Ephraim Zegeye Apr 2021

Smart Pacifier For Measuring Infant Bite Force, Greta Wilkins, Joshua Ingram, Aleck Tilbrook, Ephraim Zegeye

Liberty University Research Week

Undergraduate

Applied


Determining The Effect Of Embedding Sensors In The Hosting Composite’S Mechanical Properties, Arianna Verbosky, Ephraim Zegeye Apr 2021

Determining The Effect Of Embedding Sensors In The Hosting Composite’S Mechanical Properties, Arianna Verbosky, Ephraim Zegeye

Liberty University Research Week

Undergraduate

Applied


Simulating Chemical Reactors To Reduce Shutdowns Due To Overheating, Eric Turman, Wayne Strasser Apr 2021

Simulating Chemical Reactors To Reduce Shutdowns Due To Overheating, Eric Turman, Wayne Strasser

Liberty University Research Week

Graduate

Applied


Confocal Laser Microscopy On Acid-Etched Titanium Surfaces And Roughness Measurements, Caleb Schaible, Gabriel Weiss, Holly Monson, Hector Medina Apr 2021

Confocal Laser Microscopy On Acid-Etched Titanium Surfaces And Roughness Measurements, Caleb Schaible, Gabriel Weiss, Holly Monson, Hector Medina

Liberty University Research Week

Undergraduate

Applied


Observations On The Use Of Chemical Treatment For The Modification Of Dielectric Elastomer’S Mechanical Properties: A Work In Progress, Isaac Liu, Hector Medina Apr 2021

Observations On The Use Of Chemical Treatment For The Modification Of Dielectric Elastomer’S Mechanical Properties: A Work In Progress, Isaac Liu, Hector Medina

Liberty University Research Week

Undergraduate

Applied


Modeling A Novel Method To Diminish Covid-19 Transmission In A Hospital Room, Reid Prichard, Wayne Strasser Apr 2021

Modeling A Novel Method To Diminish Covid-19 Transmission In A Hospital Room, Reid Prichard, Wayne Strasser

Liberty University Research Week

Graduate

Applied


Testing Dielectric Elastomers In Uniaxial Tension, Carolyn Haase, Hector Medina Apr 2021

Testing Dielectric Elastomers In Uniaxial Tension, Carolyn Haase, Hector Medina

Liberty University Research Week

Undergraduate

Applied


Anti-Roll Bar Fatigue Analysis And Redesign, Jared Darius, Daniel Kenney, Marcos Lugo Apr 2021

Anti-Roll Bar Fatigue Analysis And Redesign, Jared Darius, Daniel Kenney, Marcos Lugo

Liberty University Research Week

Graduate

Applied


Drones And Spatial Artificial Intelligence For Improving Crop Yield, Carson Farmer, Hector Medina Apr 2021

Drones And Spatial Artificial Intelligence For Improving Crop Yield, Carson Farmer, Hector Medina

Liberty University Research Week

Undergraduate

Applied


Development Of Uavs And Propulsion Systems For Exploration On Other Planets, Aaron Young, Wayne Strasser Apr 2021

Development Of Uavs And Propulsion Systems For Exploration On Other Planets, Aaron Young, Wayne Strasser

Liberty University Research Week

Undergraduate

Theoretical Proposal


Bombardier Beetle Fire Extinguisher, Elijah Yoder, Wayne Strasser Apr 2021

Bombardier Beetle Fire Extinguisher, Elijah Yoder, Wayne Strasser

Liberty University Research Week

Undergraduate

Theoretical Proposal


How Much Mucus Do You Exhale?, Andres Del Valle, Wayne Strasser Apr 2021

How Much Mucus Do You Exhale?, Andres Del Valle, Wayne Strasser

Liberty University Research Week

Undergraduate

Theoretical Proposal


Hydrogen Combustion Engines In Fluid Dynamics, Isabelle Ambrose, Wayne Strasser Apr 2021

Hydrogen Combustion Engines In Fluid Dynamics, Isabelle Ambrose, Wayne Strasser

Liberty University Research Week

Undergraduate

Theoretical Proposal


Machine Learning Models For Energy Consumption Prediction In Buildings, Kolton Musgrove, Hector Medina Apr 2021

Machine Learning Models For Energy Consumption Prediction In Buildings, Kolton Musgrove, Hector Medina

Liberty University Research Week

Undergraduate

Theoretical Proposal