Digital Commons Network^™

Mems 411: Hydroponic Gardening System, Tiger Lu, Aj Shanahan, Jaquelin Guzman, Brandon Lacy

Mechanical Engineering Design Project Class

This report summarizes the engineering design process undertaken for the development of a hydroponic gardening system. The project began with selecting a concept, as a team, we decided to focus on designing a system tailored to community gardening needs. The report is organized into five main sections: Problem Understanding, Concept Generation, Concept Selection, Concept Embodiment, and Design Refinement. In the Problem Understanding phase, the team conducted extensive research on patents, codes and standards, user needs, design metrics, and project management. This foundational research was critical to ensure all aspects were considered before beginning the building process. User needs were identified …

Mems 411: Diving Surface Breaker, Chandler Gartner, Freddy Phillips, Maya Sumra, Olivia Slemmer

Mechanical Engineering Design Project Class

We have been recruited by the WashU diving team to design and construct a surface breaker for the Millstone Pool so the divers can have an affordable way to stay safe while practicing dives.

Mems 411: Timed Mosquito Egg Container Design Project, Paige Warren, Witt Ciesla, Ethan Sobel

Mechanical Engineering Design Project Class

The goal of this project is to design and construct a device that allows for the controlled study of mosquito egg-laying behavior in response to artificial light and temperature variations. Specifically, the device will limit access to cups of standing water, which serve as egg-laying sites, to preprogrammed times of day over a 7-day period.
The device should ensure the following:

• Control Access: The container should be open and closed at predetermined intervals, allowing mosquitoes to access the cups of standing water only during these times.
• Programmability: It should be easy for a novice to specify the opening and closing …

Mems 411: Ball Bearing Sorter, Abdissa Effa, Juliet Whitehead, Ayub Shifa

Mechanical Engineering Design Project Class

The challenge is to design and fabricate a compact device capable of autonomously sorting and transporting ball bearings of varying materials (chrome steel, brass, nylon) and sizes (¼” and ½”) into designated packaging stations. The device must operate efficiently, accurately, and within the constraints of a 20x20x20-inch enclosure, meeting industrial assembly line standards of speed and precision while minimizing human intervention. It aims to address the need for high-rate sorting systems in manufacturing environments, ensuring accurate material identification and classification for streamlined operations.

Mems 411: Asme Ball Bearing Sorter, Ryan Lively, Joseph Huster, Wil Collins

Mechanical Engineering Design Project Class

The ASME Student Design Competition focused on the design and construction of a ball bearing sorter. This ball bearing sorter must be capable of sorting 2 sizes of ball bearings, being 1/2 inch and 1/4 inch. For each size, there are 3 different bearing materials, brass, steel, and acetal plastic. The device is intended to have the bearings fed into a hopper, and then fully autonomously sort the bearings. The autonomous sorting was to transport the various bearings into 6 different packing stations, one for each size and material bearing. These packing stations must be easily removable. This design project …

Mems 411: Automated Assistive Toilet, Alex Scaff, Kenna Mcgahren, Daniel Sibley

Mechanical Engineering Design Project Class

How do we make toilets more accessible for all people - regardless of physical, mental, emotional impediments - while also ensuring simplicity and cost-effectiveness? Utilizing sensors, our toilet device is designed to automatically open and close the toilet lid upon approach, increasing ease of use and general hygiene of the user while being friendly to those who struggle with certain disabilities or impairments.

Mems 411: Adjustable Desk, Catryn Cattoor, Natalia Pilpil, Jamie Burgasser, Adam Wong

Mechanical Engineering Design Project Class

Design and create a desk for a special education classroom of kindergarteners to third graders. The desk needs slanting capabilities, wheel chair accessibility, raising/lower capabilities, distraction prevention capabilities, and light board capabilities. These capabilities need to be configurable for students with different needs. This desk also needs to be very durable, safe, and mobile. The main motivation for this project is the desire to provide the teacher and her students with a single, cost-effective product that is safe, easy to use, and meets their desired needs.

Mems 411: Group V Ball Bearing Sorter, Matthew Hernandez, Sean Huffert, Ethan Delair

Mechanical Engineering Design Project Class

After a semester of hard work, Team V is proud to unveil its finished prototype for the 2024-2025 ASME Student Design Competition. The theme of this challenge was "Assembly Line Sorting and Packaging." The goal of this challenge was to make a device able to satisfy the criteria of sorting between six different bearings of different sizing and material properties, and meeting spatial and time limitations. This device needed to be fast, accurate, compact, and able to sort in bulk. Team V feels like we have met most of these requirements with our final design prototype. For this project, a …

Mems 411: Rc Plane Mount For Cfd Validation, Jake Schwartz, Margot Jay, Ian Torres, Sam Ehrman

Mechanical Engineering Design Project Class

Washington University in St. Louis’ Design/Build/Fly team (WashU DBF) participates in an annual international competition with over 100 teams where they create a Remote Control (RC) plane that can perform various missions. One of the difficulties in developing a plane each year is testing the forces on the plane. Currently, Ansys and XFLR5 are used to create computational fluid dynamics (CFD) models for the plane. CFD modeling simulates air flow over the plane’s wings to analyze how to optimize the aircraft’s aerodynamics. While this is a useful strategy to predict the plane’s theoretical performance, WashU DBF Technical President, Eleni Kambouris, …

Mems 411: Mini Syringe Pump, Rachel Foulk, Braxton Hart, Camilo Hernandez

Mechanical Engineering Design Project Class

In many research and medical settings, small amounts of liquids are dispensed using syringes. Very often, syringe pumps like those shown in the left image, are used to control the amount (i.e., flow rate) of dispensed/collected fluid. There are single- or multi-style syringe pumps; the one shown is single-style; multi-style have 2-8 parallel syringes that are all pushed/pulled at the same flow rate. However, these syringe
pumps are bulky and heavy, making them impractical for many experimental setups. Commercial alternatives include very expensive syringe pumps with remote dispensers. Furthermore, it is often necessary to have two syringe pumps operate in …

Intouch Week Of December 9, 2024, New York Medical College

InTouch

• NYMC Donors Make an Impact This Giving Tuesday
• Medical Students Inspire Youth During Black Men in White Coats Summit
• 29th Annual MSRF Set for December 13
• GSBMS Celebrates Friendsgiving
• NYMC Alumni/Student Fall Mixer Builds Connections and Professional Insights
• Human Milk for Extreme Preemies: A Kosher Option
• Artificial Intelligence Can Revolutionize Acute Stroke Care
• Design the Next NYMC T-Shirt
• NYMC and TU Hosts “Ninety Minutes: The Medical Magazine of the Web”
• In The Community: GSA 5K Raises Awareness for Food Insecurity, Fundraising Continues
• Faculty Spotlight: From Pupil to Professor: Alumni Lighting the Way at NYMC

Chimes: December 9, 2024, Calvin University

Chimes

“That’s not true inclusion:” For disabled students, full campus accessibility remains elusive by Sarah Sparling

Umm al-Jimal archaeological site added to UNESCO World Heritage by Grace Buller and Elisabeth Stevens

2025 January Series sees restructure and big names by Graham Kort

Changes to dining hall hours, staffing benefits leave students broadly dissatisfied by Maya Oeverman

Making worship more accessible: A Q&A with Eleanor Plutz about ASL chapel interpretation by Anna Caruso

“The Holy Spirit Made Me Dance” by Natasha Jayaputra

Development Of A Rapid Method For Pfas Detection And Quantitation In Human Hair, Justin M. Allen

Student Theses

In recent years, per- and polyfluoroalkyl substances (PFAS) have emerged as a critical focus in environmental and public health research due to their persistent nature and widespread use in products ranging from non-stick cookware to firefighting foams. These "forever chemicals" resist degradation, posing significant ecological and human health risks. While extensive studies have explored PFAS in environmental matrices, research into their presence in human hair remains limited, with only a handful of studies addressing this biomarker's potential. This thesis aims to develop a robust analytical method for detecting PFAS in human hair, leveraging its unique properties to provide a long-term …

Family Ties: How Families Of Origin And Procreation Influence Women’S Migration And Integration, Becca Goldrup

Undergraduate Honors Theses

Women's migration is an increasingly important focus of interest in understanding the family-level factors shaping individual and family-level migration decisions. Utilizing interviews with 30 immigrant women residing in Utah who migrated to the US at three different ages (childhood, young adulthood, and later adulthood), I ask: “How do familial relationships impact the immigration experience for women in the US, and how does this vary by age at migration?” I find that family significantly shapes women's migration decisions and experiences post-migration for women of all ages, but this influence has subtle differences based on their age at migration. Women who migrated …

Appropriateness Of Ambulatory Antibiotic Prescribing In South Carolina, 2012–2017, Pamela Bailey, Majdi N. Al-Hasan, Julie Royer, Max Habicht, Julie Ann Justo, P. Brandon Bookstaver Pharm.D., Sharon Weissman, Hana R. Winders

Faculty Publications

This population-based cohort study examines the appropriateness of antibiotic prescribing in South Carolina via aggregated pharmacy claims data matched with diagnosis codes from medical claims. Inappropriate antibiotic prescribing decreased from 30.2% in 2012 to 22.6% in 2017 (P < 0.001) and was more common in adults >40 years old.

Inference For Regression With Variables Generated By Ai Or Machine Learning, Laura Battaglia, Timothy Christensen, Stephen Hansen, Szymon Sacher

Cowles Foundation Discussion Papers

It has become common practice for researchers to use AI-powered information retrieval algorithms or other machine learning methods to estimate variables of economic interest, then use these estimates as covariates in a regression model. We show both theoretically and empirically that naively treating AI- and ML-generated variables as “data” leads to biased estimates and invalid inference. We propose two methods to correct bias and perform valid inference: (i) an explicit bias correction with bias-corrected confidence intervals, and (ii) joint maximum likelihood estimation of the regression model and the variables of interest. Through several applications, we demonstrate that the common approach …

Staff Education On Type 2 Diabetes Management, Ngozi Nwasuruba

Walden Dissertations and Doctoral Studies

Summary The Doctor of Nursing Practice (DNP) project involved a staff education program resulting from an identified practice gap. The nursing staff lacked the knowledge and skills necessary about Type 2 diabetes to teach their patients self-care management of their condition. The setting was an outpatient family practice clinic in Houston, Texas. The facility director reported that the clinic patients were experiencing unstable and high blood sugar due to their lack of knowledge about diabetes self-care management. The nurses were not knowledgeable enough about diabetes care to teach the patients. The practice-focused question was whether staff education could increase nurses’ …

Special Education Teachers' Perceptions Regarding Inadequate Transition Planning Services For Students With Severe Intellectual Disabilities, Jennifer Garcia Villanueva

Walden Dissertations and Doctoral Studies

The problem that was addressed in this study was that students with severe intellectual disabilities (SwSID) enrolled in life skills settings are not receiving adequate transition planning services at local rural public schools in a southwestern state. The purpose of this study was to investigate special education teachers’ (SET) perceptions about transition services for SwSID and explore SETs’ suggestions about how to improve delivery of transition planning services. The conceptual framework for this study was Schlossberg’s transition model. For this basic qualitative design, 12 semistructured interviews with SET of SwSID were conducted. Data analysis was conducted using open coding, axial …

Deputy Sheriffs’ Experience With Inmate Suicide, Tiffany Buco

Walden Dissertations and Doctoral Studies

Deputy sheriffs working in correctional facilities are responsible for enforcing rules and regulations of the facility, supervising inmates, ensuring security, and preventing inmates from escaping. The purpose of this qualitative phenomenological study was to explore the lived experiences of deputy sheriffs experiencing an inmate’s death by suicide. The sample for this study consisted of six deputy sheriffs who had been a deputy sheriff for at least 3 years and experienced an inmate suicide. The theoretical foundation applied to this study is the personal construct theory because it requires constructs that are used to make sense of people’s experiences, in this …

National Parks For Future Generations?: The Covid-19 Pandemic’S Impacts On National Parks And Tourism, Colin Cummings '25

Student Research

This paper explores the complex relationship between tourism and the environment in U.S. National Parks, with a focus on the impact of the COVID-19 pandemic. It examines how increased visitation affects wildlife, the spread of invasive species, and the overall health of natural ecosystems. The author argues for a shift in public perception of national parks, emphasizing education, community engagement, and a deeper understanding of the interconnectedness of nature to ensure the preservation of these areas for future generations. The paper also discusses the role of park rangers and historical interpretations of wildlife and the environment, as well as the …

Order On Impact Of Truck Inds. And Discovery Issues

Catholic Dioceses in Bankruptcy

No abstract provided.

Nature-Derived Flame Retardant For Cotton Fabrics With Green Coconut Shells, Tarikul Islam, Abdullah Al Rakib Shikder, Md Shahabul Hossen, Md Mazbah Uddin, Md Tanvir Hossain, M. Mahbubul Bashar

Michigan Tech Publications

This study presents an eco-friendly flame-retardant solution for cellulosic fabrics using green coconut shell (GCS) extract and phytic acid (PA). Cellulosic materials are highly flammable and release harmful gases during combustion. Conventional flame retardants may pose environmental and health risks while impacting the fabric quality. GCS extract is a rich source of tannins, phosphorus, silicates, metallic salts, and oxides and is explored as a novel flame retardant (FR) for cotton fabrics. Cotton samples were pretreated with PA and then with varying concentrations of GCS extract using a padding technique. Comprehensive characterization followed, including limiting oxygen index (LOI), thermogravimetric analysis (TGA), …

Greenmind: A Climate-Positive News Portal, Surabhi Singh

Theses

Greenmind is a website that promotes positive climate narratives for environmentally conscious individuals seeking hope and actionable solutions. It redefines how we approach climate change narratives by focusing on hope and progress. Unlike traditional media that often rely on fear to grab attention, Greenmind delivers stories showcasing actionable solutions and positive impacts already happening across the globe. Its core mission is to empower individuals to see themselves as agents of change, fostering collective action rather than promoting fear as a tactic for change. Greenmind’s approach to climate narratives is supported by research emphasizing the power of positive storytelling. Studies from …

Delirium Screening Practices For Older Adults In Emergency Departments Across United States: A Scoping Review, Azmat Sidhu, Joy K. Luzingu, Sheneil Agyemang, Arushi M. Chalke, Grace M. Leito, Joseph A. Molina, Zhao Chen, Deborah Jean Mcclelland, Nimit Agarwal, Leah Steckler, Angela Wu

Journal of Geriatric Emergency Medicine

Delirium is commonly missed among older patients in the Emergency Department (ED). Identifying and managing patients with delirium in ED is critical to help improve health outcomes and prevent falls and readmission. There are several validated delirium screening tools but their utilization for assessing delirium in emergency department settings are still under investigation. The overall purpose of this review was to summarize information on current screening practices for delirium among older adults (65 or older) in EDs across United States and to identify current gaps in knowledge and evidence to help inform future research and practice. A comprehensive literature search …

¿Qué Dijo El Médico?: Creating A Procedural Preparation Booklet For Spanish-Speaking Patients And Families In The Pediatric Hospital Setting, Caitlyn Bockbrader

Honors Projects

The purpose of my Honors Project is to demonstrate the need for and creation of a resource that supports Spanish-speaking children’s ability to cope through commonly stressful medical procedures. In developing this project, I conducted a literature review on the efficacy of preparation booklets in lessening pre-procedural anxiety, cultural considerations for the Hispanic community, and current barriers to equitable language access in healthcare settings. My final product was designed to answer the following question: How can the psychosocial outcomes of Spanish-speaking children in U.S. hospitals be improved through the use of Child Life procedural preparation materials? In answering this question, …

Physical Fitness And Nutrition In Collegiate Musical Theater Programs, Alexis Ochi, Amy Morgan Ph.D, Mary-Jon Ludy Ph.D.

Honors Projects

BACKGROUND: Athleticism and physical fitness are often not the first characteristics one identifies when visualizing someone in musical theater. Watching just one performance can make it clear that dancing, acting, running, all while singing and keeping near perfect pitch requires a theater actor to be extremely fit. As well as fitness, nutrition considerations and injury prevention should also be considered due to the high physiological demand placed on these performers. Minimal research has been conducted regarding the fitness and nutritional habits of musical theater performers. PURPOSE: This study investigated the prevalence of discussions about fitness and nutrition in collegiate musical …

The Role Of Full-Time Job Postings For Postsecondary Cte Faculty In Curriculum Design: A Document Analysis, James Bartlett Ii, Michelle Bartlett

Journal of Research in Technical Careers

This study examines job postings for full-time postsecondary Career Technical Education (CTE) faculty to explore job duties. Document analysis was used on the job postings collected on JobsEQ Real-Time Intelligence for CTE instructors in North Carolina. Over a year, 318 job postings were found through specific search terms in JobsEQ, with 205 retained. Discarded postings were due to duplication, not postsecondary CTE, or part-time positions. Examination of job postings revealed six thematic areas that tie to curricular skills: development process, inputs and standards, content of the CTE curriculum for students, uses of curriculum in the CTE instructor’s role, goals, and …

Making A Career Out Of Teaching: Exploring Longevity And Resiliency In Tennessee School-Based Agriculture Teachers, S. Sirrena Wiggins, Blake C. Colclasure, Tyler Granberry, Christopher T. Stripling

Journal of Research in Technical Careers

The need for qualified school-based agricultural education (SBAE) teachers is often discussed in terms of teacher recruitment; however, retaining those teachers is also necessary to ensure the stability and longevity of SBAE programming. Through the lens of teacher resilience, this qualitative study sought to answer the question: What individual and social-ecological characteristics of Tennessee career agriculture teachers contributed to their resiliency and longevity in the profession? In response, we conducted a phenomenological study of Tennessee agriculture teachers with 15 or more years in the profession. After coding data from 15 interviews, six themes emerged: (1) Passion, (2) Support, (3) Adaptability, …

Comparing Recovery Volumes Of Steady And Unsteady Injections Into An Aquifer Storage And Recovery Well, Saeid Masoudiashtiani, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

Aquifer Storage and Recovery (ASR) can involve injecting available surface water into an unconfined aquifer and then extracting it to provide secondary water for irrigation. This study demonstrates a method for evaluating the appropriateness of steady injection versus unsteady injection for an assumed situation. In design, it can be important to affect the transient: the proportion of the injected water that would be subsequently extracted (versus that remaining in the aquifer) and the proportion within the extracted water that would be an injectate (versus ambient groundwater). These proportions can be predicted from the predicted value of an ASR well's Recovery …

Factors Associated With Receipt Of Tobacco Treatment Integrated With Nurse Navigation In A Centralized Lung Cancer Screening Program At An Urban Academic Medical Center, Christine S. Shusted, Sarah Mukhtar, James Lee, Brooke Ruane, Emily Muse, Lawrence Emeigh-Mcbride, Eboni Gatson-Anderson, Gregory C. Kane, Kuang-Yi Wen, Hee-Soon Juon, Julie A. Barta

Division of Pulmonary, Allergy, and Critical Care Medicine Faculty Papers

PURPOSE: Optimal approaches for tobacco treatment counseling among individuals who currently smoke and are undergoing shared decision-making (SDM) and lung cancer screening (LCS) are unknown. The objective of this cross-sectional study was to determine the rate of reported interest in tobacco treatment counseling and pharmacotherapy among individuals who currently smoke and are receiving integrated nurse navigation for LCS and tobacco treatment in a centralized LCS Program.

METHODS: We identified individuals undergoing SDM through our centralized LCS Program between March 2021 and March 2022. The LCS Program tobacco treatment protocol includes counseling both in-person and via telephone during SDM, LCS results …