Engineering Commons^™

Cmce 2351 Fluid Mechanics Lab, Course Outline, Rosemary Brybag

Open Educational Resources

This course studies the fundamentals of fluid mechanics including: properties of fluids, fluid statics, manometers, center of pressure, buoyancy, stability, principles of fluid flow, flow measurements, frictional head losses, conservation of momentum and energy, pump power and efficient, and open channel flow.

Contributions Of Implicit And Explicit Memories To Sensorimotor Adaptation Of Movement Extent During Goal-Directed Reaching, Devon D. Lantagne, Leigh A. Mrotek, Rebecca Slick, Scott A. Beardsley, Danny G. Thomas, Robert A. Scheidt

Biomedical Engineering Faculty Research and Publications

We examined how implicit and explicit memories contribute to sensorimotor adaptation of movement extent during goal-directed reaching. Twenty subjects grasped the handle of a horizontal planar robot that rendered spring-like resistance to movement. Subjects made rapid “out-and-back” reaches to capture a remembered visual target at the point of maximal reach extent. The robot’s resistance changed unpredictably between reaches, inducing target capture errors that subjects attempted to correct from one trial to the next. Each subject performed over 400 goal-directed reaching trials. Some trials were performed without concurrent visual cursor feedback of hand motion. Some trials required self-assessment of performance between …

Effect Of Ultrasound Pressure On The Distribution Of Bovine Serum Albumin Delivered By Focused Ultrasound-Mediated Blood-Brain Barrier Opening In Cleared Mouse Brains, Yajie Liu

McKelvey School of Engineering Graduate Student Theses & Dissertations

Most common diagnosis and therapeutic methods have low effectiveness when used on brain diseases. The key obstacle is that the blood-brain barrier (BBB) prevents most drugs from entering the brain. Some strategies have been developed to improve the efficiency of drug delivery crossing BBB. Among all these strategies, focused ultrasound-mediated BBB opening (FUS-BBB Opening) stands out since it is noninvasive and can be located to the target area. Detailed studies are required on the distribution of drugs delivered by FUS-BBB opening and the effects of FUS parameters on the distribution. This thesis proposes a pipeline involving tissue clearing and lightsheet …

Study And Design Of Array And Beamsteering Antennas For Millimeter Wave Band Application, Saeideh Shad

Boise State University Theses and Dissertations

Millimeter wave (mmWave) communication systems have attracted significant interest regarding supporting high data rate of Gigabit/s communications for the new generation of wireless communication networks. MmWave communication systems have frequency ranges in between 30 and 300 GHz wherein an enormous amount of unused bandwidth is available. Although the available bandwidth of mmWave frequencies is promising for high data rate communications, the propagation characteristics of mmWave frequencies are significantly different from microwave frequency band in terms of path loss, diffraction and blockage, and atmospheric absorption. In general, the overall losses of mmWave signals are significantly larger than that of microwave signals …

Musculoskeletal Adaptation Of Young And Older Adults In Response To Environmental, Physical, And Cognitive Conditions, Amy E. Holcomb

Boise State University Theses and Dissertations

Accidental falls present a large functional and financial burden among people aged 65 years and older. Falls, injuries associated with falls, and the fear of falling decrease quality of life, physical function, and independence for older adults. To prevent falls, improve stability, and protect joints from damage or injury, the typical response to "challenging" conditions include cautious gait, increase muscle co-contraction, and decreased range of motion. These compensatory strategies are more pronounced in the older adult population with apprehensive "cautious" gait at slower speeds, decreased knee flexion, and increased muscle activation around the knee and ankle. The underlying mechanisms and …

Phase Change Temperature Sensor For High Radiation Environment: Material, Additive Technology And Structure Development, Al Amin Ahmed Simon

Boise State University Theses and Dissertations

Performance of any sensor in a nuclear reactor involves reliable operation under a harsh environment (i.e., high temperature, neutron irradiation, and a high dose of ionizing radiation). In this environment, accurate and continuous monitoring of temperature is critical for the reactor's stability and proper functionality. Furthermore, during the development and testing stages of new materials and structural components for these systems, it is imperative to collect in-situ measurement data about the exact test conditions for real-time analysis of their performance. To meet the compelling need of such sensing devices, we propose radiation-hard temperature sensors based on the phase change phenomenon …

Computational Modeling Towards Accelerating Accident Tolerant Fuel Concepts And Determining In-Pile Fuel Behavior, Ember Sikorski

Boise State University Theses and Dissertations

To mitigate global warming, we need to develop carbon-free ways to generate power. Nuclear energy currently generates more carbon-free power in the United States than all other sources combined at 55%. To make nuclear as viable a power source as possible, we need to maximize power density and safety. Both of these can be improved with Accident Tolerant Fuel (ATF) materials. Uranium nitride (UN), a candidate ATF material, offers high fuel economy due to its uranium density and improved safety margins from thermal properties. However, its instability in the presence of water, a reactor coolant, must be addressed. This dissertation …

Industrial Control System Data Resiliency, Daniel A. Bovard

Boise State University Theses and Dissertations

This thesis identifies and fortifies against a critical vulnerability in industrial control system (ICS) security. A properly designed ICS security framework consists of a multi-layered approach starting with heavy fortifications in information technology and ending with control information of operational technology. Currently, ICS security frameworks lack visibility and place blind trust in devices at the lowest level of the control hierarchy. Attaining control data visibility at the lowest level of the control hierarchy is critical to increasing the resiliency of an ICS security posture. This thesis demonstrates how this data can be captured at the lowest level of the control …

Decentralized And Centralized Optimal Control Of Hvac Systems, Ryan S. Montrose

Boise State University Theses and Dissertations

Utility service providers are often challenged with the synchronization of thermostatically controlled loads. Load synchronization, resulting from naturally occurring or demand response events, can damage power distribution equipment and reduce the grid's efficiency. Because thermostatically controlled loads constitute most of the power consumed by the grid at any given time, the proper control of such devices can lead to significant energy savings and improved grid stability. The contribution of this thesis is developing optimal control algorithms for both single-stage and variable-speed heat pump HVAC systems. Our control architecture allows for regulating home temperatures through selective peer-to-peer communication while simultaneously minimizing …

Advances In The Synthesis And Application Of Anti-Fouling Membranes Using Two-Dimensional Nanomaterials, Asif Shahzad, Jae Min Oh, Mudassar Azam, Jibran Iqbal, Sabir Hussain, Waheed Miran, Kashif Rasool

All Works

This article provides a comprehensive review of the recent progress in the application of advanced two-dimensional nanomaterials (2DNMs) in membranes fabrication and application for water purification. The membranes fouling, its types, and anti-fouling mechanisms of different 2DNMs containing membrane systems are also discussed. The developments in membrane synthesis and modification using 2DNMs, especially graphene and graphene family materials, carbon nanotubes (CNTs), MXenes, and others are critically reviewed. Further, the application potential of next-generation 2DNMs-based membranes in water/wastewater treatment systems is surveyed. Finally, the current problems and future opportunities of applying 2DNMs for anti-fouling membranes are also debated.

Alternative Doppler Extraction For Indoor Communication Signals, Thomas L. Bradshaw

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Radar is a common detection system for detecting the speed and velocity of moving objects. Radar is performed by transmitting a radio signal in the direction of a moving object and then processing the received reflected radio waves. The radar system processes the received signal to extract the Doppler frequency of the reflected waves, which reveals information about the velocity of the object. In traditional radar, the system uses one antenna for both the transmitter and the receiver.

In passive bistatic radar, the transmit antenna and receiver antenna are separated. In addition, the radar system has no control over the …

Navigation Performance Of Line/Plane Intersection Lidar Model In Conjunction With Opportunistic Feature Tracker, Michael R. Hansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

With NASA awarding numerous contracts to build commercial lunar payload spacecraft and human lunar landers, the need for high precision navigation has increased. Traditional inertial navigation alone is not sufficient to autonomously land a vehicle on hazardous lunar terrain. Terrain relative navigation (TRN) systems have been explored in previous research that exploit camera observations of known landmarks. Such approaches require the flight electronics to correctly match features of the observed landmarks to an onboard database, in the drastically varying lighting conditions of moon. This paper explores the performance of a TRN system that does not rely on apriori landmark identification, …

Exploring Analytical Issues Associated With Oxidation Kinetics In Drinking Water, Shadi Haji Eghrari

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This dissertation contains two different section that pertain to two different subjects.

Section One (Haloamines): Disinfection with ozone and chlorine is critical in protecting the public and animals from pathogens in pools. Disinfection results in in the formation of haloamines from the unintended reactions of human and animal inputs and bromide/chloride with oxidants and disinfectants which cause health problems.

The purpose of this research was to examine the occurrence of haloamines during the chlorination of saltwaters. In this study, the effect of bromide concentration was observed to exert a significant effect on the stability of Haloamines, and with no bromide …

Development And Application Of A Decision Framework To Support Improved River Basin Water Management, Leah Meeks

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Water management decisions made at local levels may have effects throughout an entire river basin. Water managers need better ways to help identify which decisions have broader implications and to quantify those effects to inform decision making. This dissertation presents a framework providing a basin-wide approach to water management using three studies. The first study developed a software tool to quantify how local changes within a water resources network affect the entire network. A case study was conducted on the Lower Bear River in Utah. The second study quantified the basin-wide effects of reducing return flows from irrigation areas to …

Methods Development, Design Analysis, And Testing Of Novel Centrifugal Devices For Mammalian Cell Culture Harvest, W. Aaron Dryden

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Thermo Fisher Scientific is developing a centrifugal device to be used in the biopharmaceutical industry. The novel technology was used to remove cells from cell cultures, which produce drugs and medical treatments. The harvest process of removing cells is the first step towards product purification and is an important unit operation for ensuring high product yield. Since the device is a novel technology, methods to test and evaluate the performance of the centrifuge needed to be developed.

Successful testing methods were developed in this work and were implemented on over 30 different centrifuge designs. Amongst these many designs, different operating …

Investigating The Habits Of Mind Of Practicing Engineers, Theresa K. Green

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One goal of undergraduate engineering education is to prepare students with the knowledge, skills, and decision-making strategies that are necessary for success in engineering practice. One proposed method to teach students these skills is to incorporate habits of mind into K-12 and undergraduate curricula. Habits of mind are the intelligent, social behaviors that engineers should aspire to have when solving problems, engaging with others, and dealing with uncertainty. Previous literature has suggested that incorporating ideas about habits of mind in educational curricula can teach students the disciplinary skills, technical knowledge, and social values that would help prepare them to enter …

Understanding The Marginal Utilities Of Commute Time, Work Time, Travel Cost, And Income Using Stated Preferences Surveys, Niranjan Poudel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In transportation economics, measuring the willingness to pay (WTP) for a reduction in travel time–the monetary value of travel time savings (VTTS) –plays an important role in understanding the social benefits of various transportation projects. These monetary appraisals (WTP, VTTS) are better understood either through expensive daily activity-travel-expenditure diaries or using discrete choice experiments (DCEs). This study made use of data collected from two different stated preference surveys – a type of DCEs - (one from Portland, Oregon, US, and one from all over the US) to understand the marginal utilities of work, commute, income, and travel cost. The marginal …

Active Stability Monitoring And Stability Control Of Dc Microgrids Using Incremental Continuous Injection, Rohail Hassan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Electrified transportation and integration of renewable energy in the electric power grid requires the use of power electronic converters for integrating different forms of power; from ac to dc, dc to ac, dc to dc, etc. Recent trend towards electrifying automobiles, aircraft and ships, and increasing penetration of renewable energy has increased the required power levels and number of the power electronics converters connected together in a dc microgrid system. Stable operation of these interfacing converters for all operating conditions has been a topic of renewed interest in the last couple of decades. Traditionally, dc microgrids have been designed conservatively …

Control Of Series Connected Battery Powered Modules, Joshua K. Wooten

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Batteries are a very common type of power source used for all sorts of applications. However, these batteries do not last forever. The purpose of this thesis is to explain and implement a strategy which allows batteries to have a second life; to be able to be re-charged and re-used for another set period of time once they no longer meet a system’s requirements. The preferable way to do this is to make each cell have the same state of charge (SOC) which will lead to a longer lasting battery pack. These batteries will be hooked up to a battery …

Exact And Approximate Relaxation Techniques For Computational Guidance, Sheril Avikkal Kunhippurayil

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The focus of this dissertation is in the development and application of relaxation techniques that enable efficient and real-time solution of complex computational guidance problems. Relaxations transform a non-convex constraint into a convex constraint and provides proof that the optimal solutions to the relaxed problem are optimal for the original problem. Unique contributions of this work include: 1) a relaxation technique for solving fixed final time problems between fixed points, 2) a performance analysis on the application of computational guidance for the Mars Ascent Vehicle, and 3) establishment of sufficient conditions for non-singularity of optimal control for problems on a …

Analysis Of Large Embankment Dam In Case Of Rapid Drawdown And Earthquake Aftershock, Pothikul Vivithkeyoonvong

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Dams and reservoirs are important as a source of freshwater as well as for regulating flooding and producing hydroelectricity. The same as with any other manmade structure, dams need to monitored and maintained to prevent disastrous failure.

One of the events that can reduce the stability of an embankment dam is rapid drawdown. Rapid drawdown is when the water level decreases at such a rapid rate that the dam material(s) cannot drain and adjust to the change in time. Without the buttressing effect of the water, the upstream slope of the dam becomes less stable. Another threat to dam stability …

3d-Printed Morphing Wings For Controlling Yaw On Flying-Wing Aircraft, Benjamin C. Moulton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The flaps on an airplane wing are used to control the aircraft during flight. These flaps traditionally have at most three articulation or hinge points. Recent studies have shown improved flap efficiency using a conformal flap, which deforms following a curved shape. Much of aircraft improvement comes through increasing its efficiency during flight. This efficiency is generally improved by decreasing the drag force on the aircraft. A potential solution to decrease drag is to remove additional lifting surfaces, such as the horizontal and vertical stabilizer ubiquitous on general aviation aircraft. These additional lifting surfaces are used to trim and control …

Attitude And Reflection Parameter Estimation Of Resident Space Objects Using Ground-Based Photometry, Arun J. Bernard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

There are currently thousands of objects orbiting Earth, and this number is only going to increase. Larger number of satellites will require that operators have a greater knowledge of the state their assets. Electro-optical telescopes are currently being used to observe and track many of these objects. When using these telescopes to take images of satellites, they often appear as dots in the image. Depending on the surface properties of the satellite, and its orientation at a given time, the dots in the image can appear brighter or dimmer. Photometry measurements are a quantification of how bright the object appears. …

Safety In Numbers: Models Of Pedestrian And Bicycle Crash Frequency And Severity At Signalized Intersections In Utah Using Innovative Measure Of Exposure, Ahadul Islam

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Recent trends indicate a dramatic increase in both the number and share of pedestrian and bicyclist injuries and fatalities nationally and in many states. This study aimed at understanding (geometric, traffic, operational, and other) factors associated with pedestrian and bicycle safety and also to assist in the prioritization and selection of countermeasures to improve pedestrian and bicycle safety at signalized intersections. Several negative binomial models were estimated to investigate factors affecting pedestrian and bicycle crash frequency. The models suggested several characteristics of the road network, land use, built environment, and neighborhood sociodemographics were significantly associated with more (or fewer) pedestrian …

An Analysis Of Electromagnetic Flowmeters: A Numerical Study, Kade J. Beck

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As water scarcity increases, improved water management through better water measurement is of critical global significance. Today, the most common way to measure water in drinking water and wastewater systems is to use an electromagnetic (magnetic) flowmeter. A magnetic flowmeter has many components, and their accuracy can be compromised if not installed or calibrated correctly. The purpose of the present study was threefold. Each of the three components has been named to help the reader understand the context of the study without getting lost in the details.

The Idealist. Using mathematical programs, the spacing of two types of magnetic flowmeter …

Embracing Low-Power Systems With Improvement In Security And Energy-Efficiency, Pramesh Pandey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As the economies around the world are aligning more towards usage of computing systems, the global energy demand for computing is increasing rapidly. Additionally, the boom in AI based applications and services has already invited the pervasion of specialized computing hardware architectures for AI (accelerators). A big chunk of research in the industry and academia is being focused on providing energy efficiency to all kinds of power hungry computing architectures. This dissertation adds to these efforts.

Aggressive voltage underscaling of chips is one the effective low power paradigms of providing energy efficiency. This dissertation identifies and deals with the reliability …

Analysis And Design Of 3-Phase Unfolding Based Ac-Dc Battery Chargers, Rees R. Hatch

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis presents the analysis and design of high-efficiency battery chargers for heavy duty EV applications. The rise in popularity of the electric vehicles (EVs) due to their increased efficiency over conventional internal combustion engines, has driven the need for more battery charging infrastructure. Furthermore, heavy duty vehicles are also being converted to electric to fill needs such as public transportation via bus fleets as well as cargo delivery via semi-trucks. Such heavy duty vehicles require more energy than personal transportation vehicles and thus require larger battery packs. To charge heavy duty battery packs in the same amount of time …

Movement Analysis For Neurological And Musculoskeletal Disorders Using Graph Convolutional Neural Network, Ibsa K. Jalata, Thanh-Dat Truong, Jessica L. Allen, Han-Seok Seo, Khoa Luu

Computer Science and Computer Engineering Faculty Publications and Presentations

Using optical motion capture and wearable sensors is a common way to analyze impaired movement in individuals with neurological and musculoskeletal disorders. However, using optical motion sensors and wearable sensors is expensive and often requires highly trained professionals to identify specific impairments. In this work, we proposed a graph convolutional neural network that mimics the intuition of physical therapists to identify patient-specific impairments based on video of a patient. In addition, two modeling approaches are compared: a graph convolutional network applied solely on skeleton input data and a graph convolutional network accompanied with a 1-dimensional convolutional neural network (1D-CNN). Experiments …

Incorporating The 10th Edition Institute Of Traffic Engineers (Ite) Trip Generation Rates Into Virginia Department Of Transportation Guidelines, Kun Xie, Mecit Cetin, Hong Yang, Xiaomeng Dong

Civil & Environmental Engineering Faculty Publications

The Institute of Transportation Engineers (ITE) released the Trip Generation (TG) 10th edition in 2017, which significantly updated its database, and some of its trip generation rates were substantially lower than those of earlier editions. This study aims to investigate the applicability of the TG 10th edition in various Virginia contexts and to recommend how to incorporate the TG 10th edition into state guidelines. The research team surveyed 31 state transportation agencies to obtain a clear understanding of current practices in the adoption of trip rates and trip estimation approaches. We systematically compared trip rates of TG 9th and 10th …

Study Of Halide Gradient Formation Via Solution–Solid Halide Exchange In Crystalline Ch3Nh3Pbbr3 Thin Films, Behnaz Akbari

Department of Chemistry: Dissertations, Theses, and Student Research

In this thesis, attempts have been made to understand halide exchange and mass transport inside the solid lattice of Lead Halide Perovskites (LHPs). We aim for the transformation of MAPbBr₃ using ionic solutions including 1-Butyl-3-methylimidazolium iodide (BMIMI), and 1-Butyl-3-methylimidazolium chloride (BMIMCl) as halide ion sources to observe the halide diffusion across the thin film sample and to have LHPs with a gradient of mixed halides (MAPbBr_3-x (I/Cl)_x, 0 ≤ x ≤ 3). Successfully, MAPbBr₃ single-crystalline thin film was fabricated with different configurations. Surface analysis of the LHPs, elemental composition, halide diffusion, roughness, and size of …