Engineering Commons^™

A Methodology For Assessing And Monitoring Risk In The Industrial Wastewater Sector, Anna Trubetskaya, William Horan, Paul Conheady, Ken Stockil, Shane Merritt, Sean Moore

Publications

The concept of sustainable risk assessment in industrial wastewater treatment is vital to determine the causes and consequences of plant failure. The potential wastewater-related risks that could hamper the operation of the entire manufacturing facility are currently inadequately defined and under researched. This work proposes a framework that includes the comparison of literature and experimental data to quantify the impact of the significant process parameters on the critical process outputs. From the business perspective, managing and minimising risks will be possible when the number of impact parameters is low and the relationships between different parameters are clearly understood. The results …

Metallic Surface Doping Of Metal Halide Perovskites, Yuze Lin, Yuchuan Shao, Jun Dai, Tao Li, Yi Liu, Xuezeng Dai, Xun Xiao, Yehao Deng, Alexei Gruverman, Xiao Cheng Zeng, Jinsong Huang

Department of Mechanical and Materials Engineering: Faculty Publications

Intentional doping is the core of semiconductor technologies to tune electrical and optical properties of semiconductors for electronic devices, however, it has shown to be a grand challenge for halide perovskites. Here, we show that some metal ions, such as silver, strontium, cerium ions, which exist in the precursors of halide perovskites as impurities, can n-dope the surface of perovskites from being intrinsic to metallic. The low solubility of these ions in halide perovskite crystals excludes the metal impurities to perovskite surfaces, leaving the interior of perovskite crystals intrinsic. Computation shows these metal ions introduce many electronic states close to …

Recurrence Network Analysis Of Design-Quality Interactions In Additive Manufacturing, Ruimin Chen, Prahalada K. Rao, Yan Lu, Edward W. Reutzel, Hui Yang

Department of Mechanical and Materials Engineering: Faculty Publications

Powder bed fusion (PBF) additive manufacturing (AM) provides a great level of flexibility in the design-driven build of metal products. However, the more complex the design, the more difficult it becomes to control the quality of AM builds. The quality challenge persistently hampers the widespread application of AM technology. Advanced imaging (e.g., X-ray computed tomography scans and high-resolution optical images) has been increasingly explored to enhance the visibility of information and improve the AM quality control. Realizing the full potential of imaging data depends on the advent of information processing methodologies for the analysis of design-quality interactions. This paper presents …

Ce 200a-002: Surveying Lab, Allison Lapatka

Civil and Environmental Engineering Syllabi

No abstract provided.

Are Entrepreneurial Capabilities And Prior Knowledge The Silver Bullet For The Generation Of New Digital Venture Ideas In A Digital Context?, Meifang Yao, Dan Ye, Gao Yang, Hui Shi, Xianrong Zheng

Information Technology & Decision Sciences Faculty Publications

Digital technology has had an important impact on entrepreneurship. It has changed the uncertain nature of the process of new venture idea generation, and it has also brought unprecedented opportunities for the generation of new digital venture ideas. In order to explore how startups can deal with major challenges brought by digital technology and create new digital venture ideas, this paper focuses on micro level entrepreneurial actions and constructs a theoretical model of the relationship among networking capabilities, IT capabilities, prior knowledge, and new digital venture ideas. Furthermore, through the hierarchical linear regression analysis of 278 sample data, the paper …

Impacts Of The Pandemic In Metropolitan Nebraska: 2021 Nebraska Metro Poll Results, Rebecca J. Vogt, Heather Akin, Cheryl A. Burkhart-Kriesel, Bradley Lubben, L. J. Mcelravy, Timothy Meyer, Steven A. Schulz

Rural Futures Institute: Publications

Most metropolitan Nebraskans felt various impacts from the pandemic. While many metropolitan Nebraskans had someone in their household that quarantined because of possible coronavirus exposure or who contracted COVID-19, most have friends or family in their community that quarantined or contracted the virus. Many metropolitan Nebraskans also have friends or family both inside and outside their community who were hospitalized as a result of COVID-19.

Most metropolitan Nebraskans say the following were affected a fair amount or a great deal by the pandemic: their socialization with others, their life overall, their company/ workplace and their mental health. Conversely, most rural …

Trust In Media, Institutions, And Health Information In Metropolitan Nebraska: 2021 Nebraska Metro Poll Results, Rebecca J. Vogt, Heather Akin, Cheryl A. Burkhart-Kriesel, Bradley Lubben, L. J. Mcelravy, Timothy Meyer, Steven A. Schulz

Rural Futures Institute: Publications

Overall, most metropolitan Nebraskans have confidence in their local institutions (public safety agencies in their community, public schools in their community, and voting and election systems in their county). However, many have very little confidence in many national institutions (the U.S. Senate, the U.S. House of Representatives and the Presidency) as well as the Governor.

Metropolitan Nebraskans most trust information received from friends/family/ acquaintances, local news sources (TV and newspapers), public sources (PBS and public radio) and state newspapers. They least trust information from social networking sites, Internet blogs, and Fox News.

Most metropolitan Nebraskans trust local health professionals for …

Multiparametric Quantitative Acoustic Imaging Of Cervical Remodeling During Pregnancy, Yan Yan

Wayne State University Dissertations

The uterine cervix plays a central role in the maintenance of pregnancy and the process of parturition. Untimely cervical ripening in early gestation predisposes to preterm labor and delivery, the leading cause of infant mortality worldwide. The current approach to evaluate the status of the cervix relies on digital and sonographic examination, which indicates the morphological changes of the cervix (cervical length). Therefore, assessing cervix tissue composition changes may provide more sensitive evaluations about cervix status beyond cervical length. Photoacoustic (PA) imaging is a relatively new, non-invasive ultrasound (US) based technology that captures acoustic signals emitted by tissue components in …

Hydraulic Balsa Wood Rising Bridge, Kaitlyn Greenfield

All Undergraduate Projects

What is the solution to allowing tall vessels to navigate past a vehicle bridge that is less than 10 [ft] above the water? To answer this question, a balsa wood bridge was designed, constructed, and tested. The bridge needed to articulate by mechanical means, allow for travel through the bridge, and be able to withstand ample force while the main structure only being constructed of balsa wood and glue. The project was analyzed in sections. These sections include: the bridge structure and its members, the hydraulic lift, and the pins needed for the bridge and hydraulic lift to operate. The …

Balsa Wood Bridge, Logan Bronemann

All Undergraduate Projects

Abstract: The objective of the project undertaken is to design and build an articulating bridge which can be raised and lowered constructed from only balsa wood. To meet the objective set forth for this project a series of requirements were set to determine the design parameters such as height, length, weight and more. Using these requirements, a series of analysis can be undertaken upon the bridge design and structure. These analyses consist of column buckling, tensile stress analysis, and compressive stress analysis. The analysis determined the dimensional requirements of the structural members to include a ½”x ½” lower support beam …

Nrj Rc Baja Car: Chassis & A-Arms, Naoki B. Masuda

All Undergraduate Projects

Three students from Central Washington University have come together to design and manufacture a unique RC Car for the annual regional RC Baja Car competition held by the American Society of Mechanical Engineers (ASME). The RC car will compete in three events, Baja, Slalom and Sprint. The objective for this project was to create a unique build based off previous team’s projects. The new design was optimized for functionality and performance to compete in each event and excel above other competition as well. The design process before finalizing on a design that resembled that of a real car was thoroughly …

Asme Rc Baja Car Drivetrain, Gizan G. Gando

All Undergraduate Projects

The purpose of the RC Baja Car is to compete in the American Society of Mechanical Engineers (ASME) competition, a series of events to prove the functionality of the vehicle. This series of events includes the Slalom, Drag, and Baja race. The Slalom is a test in the steering capability of the car. The Drag is a test in the acceleration of the car in a straight line. Lastly, the Baja puts all factors together in a race to test every component of the car. This project is about building an RC car that can function under these conditions and …

A Methodology For Autonomous Roof Bolt Installation Using Industrial Robotics, Anastasia Xenaki

Theses and Dissertations--Mining Engineering

The mining sector is currently in the stage of adopting more automation, and with it, robotics. Autonomous bolting in underground environments remains a hot topic for the mining industry. Roof bolter operators are exposed to hazardous conditions due to their proximity to the unsupported roof, loose bolts, and heavy spinning mass. Prolonged exposure to the risk inevitably leads to accidents and injuries.

The current thesis presents the development of a robotic assembly capable of carrying out the entire sequence of roof bolting operations in full and partial autonomous sensor-driven rock bolting operations to achieve a high-impact health and safety intervention …

Evaluation Of Racetrack Roughness, Cara Ditmar, Jason Liu, David Ouma, Afia Semin, Noah White

ENGS 89/90 Reports

Significance: On the Formula One circuits, cars operate at the upper limits of vehicle performance, pushing racing technology to exciting new boundaries. To achieve this, it is critical to understand in detail the inter- actions between the car tires and the track surface itself. As such, Pirelli—the tire manufacturer responsible for selecting tire specifications for each race—has systems in place to measure the macro and micro roughness of the asphalt at the track surface. Formula One itself, however, wants the ability to collect their own mea- surements so that they can provide insight into Pirelli’s decisions and create internal specifications …

Remote Sensing, Kentin Codispot, Gracie Durham, Reese Guo, Trevor Hopkins, Vanessa Pinney

ENGS 89/90 Reports

Significance: The Organic movement seeks to protect and encourage fertile soil maintenance, as healthy soils sequester CO2, improve human health, and ensure farmland will remain usable in the future. Unfortunately, the original intent of organic certification has been lost due to increased industrialization of organic farms, which focus on generating profit over soil health. The goal of our sponsor, Real Organic Project (ROP), is to help protect the integrity of organic farming by creating an add-on label to USDA Certified Organic which would improve transparency and encourage communication between the farmers, consumers, and scientists. Our project aims to augment ROP’s …

Positive Tracks Platform, Chikezie Prosper Onungwa, Chloe Baker, Rafi Khaled, Seungjae Jason Lee

ENGS 89/90 Reports

Positive Tracks (PT) is a non-profit organization that seeks to empower and equip teens and young adults to make social change in their communities and beyond using movement based activism to “sweat for good”. Be it collecting signatures, raising funds, or running an education campaign, organizers can host any physical event from an online burpee challenge to a city marathon to achieve their goals. Positive Tracks supports these youth by offering one-on-one advising and online resources. They sometimes can support in other ways such as extending marketing campaigns, connecting organizers to other people or organizations, or matching donations. Positive Tracks …

Respiratory Monitoring Device, Haley Richards, Peyton Weber, Brygitte De La Cruz, Margaret Deppe-Walker, Chris Bacotti

ENGS 89/90 Reports

Introduction: Respiratory monitoring devices are vital to improving the efficacy of prescribed medications and treatments of patients with respiratory diseases such as asthma and Chronic Obstructive Pulmonary Disease (COPD). With an annual increase of respiratory disease diagnosis and fatalities, physicians and pharmaceutical companies are progressively more concerned with clinical trials dealing with the monitoring of medical respiratory treatment efficacy. However, there is a significant concern with the current methodology of monitoring this efficacy: absence of reliable constant surveillance data. This is due to modern wearable respiratory monitoring devices being unable to continuously identify the respiratory metrics of interest (wheezing, coughing …

Tiny Research Station, Emma Doherty, Bradley Hart, Jack Lipson, Andrew Moura, Grace Neiswander, Soon-Young Shimizu

ENGS 89/90 Reports

Problem Statement and Significance: In 2018, Professor Vicki May began a project to construct a living space in the form of a tiny house for Dartmouth’s Organic Farm. Her aim was to create an experiential learning opportunity for her students, and she received a $45,000 grant from the Dartmouth Center for the Advancement of Learning (DCAL) to complete the project. However, due to permitting problems, this original plan was unable to come to fruition. Since then, iterations on how to complete the project and uses for the structure have been discussed, with the most recent application coming forth in spring …

Off-Grid Energy System To Empower The People Of El Chorro In Peru, Henry Baldwin, Moon Cheong, Jenny Kane, Sofia Maeztu, Skylar Widman

ENGS 89/90 Reports

Significance & Objectives: In 2006, more than six million people living in rural regions of Peru lacked access to electricity, resulting in a lower quality of life, limited educational opportunities, difficult means of communication, and worsened healthcare. Furthermore, the use of kerosene lamps and candles exacerbates respiratory illnesses, and dimmed lights can cause unnecessary eye strain with long term consequences. While the traditional strategy for increasing access to electricity is based around expanding the national electric grid, the complex terrain and remote location of many rural communities in Peru make this infeasible. In conjunction with WindAid, our goal is to …

Looma Education System For Developing Countries, Lylia Eng, Yefri Figueroa, Tony Kirumba, Grace King, Jesse Lin

ENGS 89/90 Reports

Significance: Looma Education Corp. (LE) supports education development in rural Nepal by providing a device that delivers engaging educational content without requiring internet access or stable electricity. The all-in-one Looma box serves as an A/V system with an offline library of educational content in both English and Nepali. LE implemented its pilot program in 2019 and currently has a network of 13 schools. LE aims to extend its reach to 100 schools in rural Nepal, specifically schools which lack basic educational materials. Despite its successes, LE is unable to upscale its production to meet increasing demand. Without the significant improvements …

Warner Rail Trail, Andres Rosales, Evan Christo, Keoni Ocalvey, Chris Drake, Savannah Cochran, Camille Pauley

ENGS 89/90 Reports

The goal of our project is to facilitate the design and development of the Bagley Fields to Warner Village section of the Concord Lake Sunapee Rail Trail (CLSRT). This section of trail has three primary goals, in no particular order: (1) to connect the town of Warner with its surrounding natural environment, (2) to provide safe access for everyone, including children, to the Bagley Field recreational facilities, and (3) to establish a challenging, key connection point along the planned 34-mile multi-use trail. The trail section may also serve as a form of alternative transportation for local residents.

The project area …

Protein Analyzer Autosampler, Julia E. Bonzanini, Samran A. Khalid, Sayuri M. Magnabosco, Jeferson A. Mendoza

ENGS 89/90 Reports

Significance & Problem Statement: Amidst the COVID-19 pandemic, the pharmaceutical industry is under increasing pressure to get high quality antibodies for vaccine production in the hopes of saving millions of lives. To accomplish this, the bioprocessing industry has transitioned to automated processing of samples. IDEX, the company behind the Tridex Protein Analyzer, hopes to extend Tridex's capabilities to automated sample processing to expand into this market segment. This is because, despite a fast readout of protein concentration, manual sampling of proteins into the Tridex can be a tedious and time consuming process. However, the Tridex machine lacks a compatible autosampler …

The Ice Chuck, Joseph Chavez, Joshua Putter, Ledane Ram, Nicholas Washington

ENGS 89/90 Reports

Significance: Brazing is one of the most important methods currently used in the production of the complex electronics that drive aerospace, medical, and many other industries. This process of brazing involves joining components together by melting thin metal foils between them. To ensure strong bonds between small components, braze foils are often machined into complex shapes called preforms. Since these foils are so thin (0.0005” - 0.002”) and have relatively low melting points compared to other metals, they are often difficult to cut accurately without either damaging them by clamping or causing them to warp from the heat added during …

Surface Autonomous Vehicle For Emergency Rescue (Saver), Mit N. Patel, Garrett L. Rawlings, Rafael G. Rosas-Soto, Andrew E. Skow, Ty P. Teodori

ENGS 89/90 Reports

Problem Significance: Advances within the space industry are expected to continue with the development of NASA’s Artemis missions, which are due to launch in 2024. To mitigate the risks inherent to spaceflight, NASA Search­and- Rescue (SAR) must be prepared and equipped to respond to unpredictable and dangerous scenarios, such as a launch abort. According to NASA studies, 26 out of 28 launch aborts culminate in a capsule splashdown in the open ocean. Former NASA astronaut Jay C. Buckey emphasized that launch aborts are violent procedures, during which the crew capsule may become damaged and present a hazardous environment; in …

Everhot, Mason Brady, Isabel Burgess, Blair Stratman, Devon Mattie

ENGS 89/90 Reports

Significance: There is seemingly nothing more frustrating than running out of hot water during your morning shower or having to wait minutes for the water to heat up. Despite these shortcomings, water heating is the average homeowner’s second largest energy expense, accounting for almost 20% of total household energy consumption in the US. Additionally, roughly 12,000 gallons of a household’s annual water use is wasted in waiting periods for adequately hot water, representing over 22% of the household’s yearly water usage. The most common residential Domestic Hot Water (DHW) systems today focus on low upfront costs. EverHot’s optimized system has …

Molten Regolith Electrolysis Processing For Lunar Isru: Financial And Physics Analysis Of Spacex Starship Transportation, Cheyenne Harper

Honors Undergraduate Theses

The purpose of the following research is to explore molten regolith electrolysis (MRE) methodology for in-situ resource utilization (ISRU) of Highlands lunar regolith, to be explored during the initial Artemis missions. An analysis of potential commercial launch providers for MRE-equipment based on technology-readiness level (TRL), payload mass support, and $ USD/kg payload price is provided. SpaceX is ultimately proposed as a launch provider of MRE equipment following multi-factorial analysis, with the SpaceX Starship human landing system (HLS) variant proposed for supporting MRE payload. Finally, customers of regolith-derived oxygen, aluminum, and silicon are distinguished to form the business case for operating …

Impact Of Climate Change On Storms And Coastal Morphodynamics, Kelsey Perez

Honors Undergraduate Theses

Storms have been impacting coastal morphodynamics directly due to its intensifying effects over the years. Climate change has caused an exponential impact on storms and therefore morphodynamic changes in the coasts. A specific land that has constantly been threatened is Dauphin Island, a barrier island in Alabama. Over time, it has experienced a total land loss of 100 ft of shoreline over the past of 3 decades and an overall 16% land loss of the island due to the intensifying effects of storms due to a changing climate. In this study, we use Hurricane Ivan as an example. In order …

A Finite Difference Model For Induced Hypothermia During Shock, Dylan S. Lyon

Honors Undergraduate Theses

The modified Fiala model from Westin was implemented with conditions for circulatory shock and hypothermia. The purpose is to model Emergency Preservation and Resuscitation (EPR), a procedure for inducing hypothermia in patients. Cold tissue temperatures reduce metabolism exponentially, greatly extending the window of anaerobic metabolic activity before permanent deoxygenation damage. EPR in patients undergoing hypovolemic shock can preserve the patient until primary surgical care and blood transfusions are attainable., thereby increasing survival rates. The main applications of EPR are military in-situ stabilization for transit to clinical care and extending the survivability of patients requiring prolonged surgery before blood transfusion. The …

Fluid-Structure Interaction For A Deformable Anisotropic Cylinder: A Case Study, Jared T. Decker

Honors Undergraduate Theses

For a structure designed to interact with the surrounding fluid, structural deformation under loads induced by fluid flows is an important factor to consider, and one which is traditionally difficult to account for analytically. Coupling the finite element method for structural analysis with the finite volume method for the determination of fluid response allows for accurate simulation of the pressure and shearing loads applied by the fluid onto the fluid-structure interface, while also determining localized structural displacements that would cause changes to the geometry of the interface. This work seeks to simulate the behavior of cylinders with varying heights and …

Targeting T Cell Glycolysis To Mitigate Graft-Versus-Host Disease, Kevin Ezhakunnel

Honors Undergraduate Theses

Hematological cancers account for nearly ten percent of cancer cases diagnosed annually in the United States. Patients who fail to respond to chemotherapy or radiotherapy must often undergo a bone marrow transplant to treat their malignancy. A significant complication following this procedure is Graft versus Host Disease (GvHD), which occurs when donor T cells mount an immune response against recipient tissues. Immunological research has highlighted the role of aberrant T cell metabolism, specifically a shift toward aerobic glycolysis, as a key driver behind the occurrence of this condition. The transcription factor FoxK1 has been revealed to be a key regulator …