Digital Commons Network^™

First Opinion: Patron Saint Of Ireland, Xiaowen Zhang

First Opinions, Second Reactions

No abstract provided.

Editorial, Wonki Lee

First Opinions, Second Reactions

No abstract provided.

Desktop-Scale Robot Tape Manipulation For Additive Manufacturing, Nahid Tushar, Rencheng Wu, Yu She, Wenchao Zhou, Wan Shou

School of Industrial Engineering Faculty Publications

Advancements in additive manufacturing and robotic automation have enabled diverse fabrication techniques using various materials. However, small-scale tape placement for three-dimensional (3D) printing remains underexplored, with most research focused on large-scale composite manufacturing using carbon fiber prepreg tapes. This work presents an innovative, automated, and cost-effective tape placement system that extends traditional methods beyond carbon fiber prepreg. We developed a customized tape print module (TPM) integrated with a robotic arm, enabling precise and versatile tape placements. Our system supports non-linear toolpaths, complex patterns, and controllable placements on multi-plane surfaces, creating overhangs without support. We demonstrate circuit printing with copper tape …

The Problem Of Reducing The Wave Resistance Of Blunt Bodies At Supersonic And Hypersonic Velocities, Oleksandr M. Shyiko, Olexii A. Оbukhov

Journal of Aviation Technology and Engineering

A new method for reducing the aerodynamic wave drag of blunt bodies in supersonic and hypersonic flows is considered. The method is based on the destruction of the detached head shock wave by placing a family of thin needle elements of a cone-shaped or cylindrical type on the blunt surface. This qualitatively changes the gas-dynamic flow pattern and leads to a new positive quantitative effect. The bow shock wave breaks up into a series of local interacting shock waves of lower intensity, which leads to a decrease in the wave drag of the streamlined body. Variants of hemispherical blunting of …

Trends In Wildlife Strikes To Aircraft In Brazil: Implications For Airport Operators, Flavio A. C. Mendonca, Chenyu Huang, Julius Keller, Carolina Anderson

Journal of Aviation Technology and Engineering

Purpose. Brazilian airport operators face persistent challenges from wildlife hazards to aircraft operations, necessitating the development and implementation or review of existing wildlife hazard management plans. Enhancing airport operators’ ability to allocate resources effectively requires a deeper understanding of past wildlife strikes. This study aimed to provide empirical insights derived from the analyses of wildlife strike and aircraft operations data in Brazil to support accident prevention endeavors.

Design/methodology. The researchers utilized two main datasets: the Brazilian National Wildlife Strike Database and the annual reports on aircraft traffic operations published by the Brazilian Department of Airspace Control. For this study, wildlife …

Was Spinoza A Deleuzian? Rethinking The Politics Of Emotions And Affects, Ahmet Aktas

Department of Philosophy Student Publications

A salient tradition in contemporary affect theory heavily relies on distinguishing between emotions and affects. The former refers to structured categories of socially coded affective states, while the latter denotes the pre-social libidinal flow underlying emotions. This distinction is commonly attributed to Spinoza and is thought to have been further developed by Deleuze. In this article, I argue that this overall historical picture is misleading and inaccurate. Deleuze radically transforms Spinoza’s theory of affect for the ends of his own ethical-political philosophy. Moreover, I argue that Deleuzian and similar conceptualizations of affect fail to fulfill their political and ethical promises …

Public Relations And Marketing On Websites Of Guide Dog Organizations, Sakura Mizuta, Mayuko Kato-Shimizu, Naoko Koda

People and Animals: The International Journal of Research and Practice

This study investigates websites of organizations that train and provide guide dogs to visually impaired people and present marketing methods as social welfare services. The study also makes suggestions for improving the websites. Among the members of the International Guide Dog Federation, 110 official websites of the organizations were analyzed. Websites were evaluated based on criteria including organizational basics, staff details, top page images, donation information, guide dog application guidance, user comments, and specific guide dog information. The websites play various roles, such as providing both general and visually impaired people with information on organizational activities, while calling for donations. …

Bunkong Tuon's Poetry Collection, Bunkong Tuon

Journal of Southeast Asian American Education and Advancement

This is a poetry collection by Bunkong Tuon.

Imagining Better: Requiring Trust And Imagination In Formal Engineering Education, Sneha Rathi, Jacqueline Handley

Journal of Pre-College Engineering Education Research (J-PEER)

Teachers and students bear the brunt of enacting K–12 engineering while having little input into engineering practices or values. In this reflective essay, a high school engineering teacher and an engineering education researcher reflect on a class bridging engineering and social justice. We describe the development of politicized trust with each other and students while partnering around shared commitments at a predominately Black school (e.g., Vakil et al., 2016). We also explore challenges in decentering conceptions of engineering derived from depoliticized, exclusionary practice. We demonstrate an urgent need to center educators and students from marginalized identities in formal engineering education.

The Dim Prospects Of A Child Find: Journal Entries Of An Academic, Engineer, And Mother Navigating Special Education Services, Idalis Villanueva Alarcon

Journal of Pre-College Engineering Education Research (J-PEER)

This provocation is a journaling exercise to uncover the author’s experiences of navigating child find, a process to identify specific learning disability needs for my oldest child. While the Individuals with Disabilities Education Act provides provisions to protect and support children with special needs, private schools do not operate equally. When considering how these inequities in the educational system overlap with precollege engineering education, there is a large gap the literature, positioning a dire need to move disability studies into the precollege engineering education space. The critical authoethnographic journal sheds light on the inequities and educational gaps that are present …

Editors’ Introduction To The 20th Anniversary Volume, Phitsamay S. Uy, Vichet Chhuon, Bryan Thao Worra, Chhany Sak-Humphry, Vikrant Chap, Wayne E. Wright

Journal of Southeast Asian American Education and Advancement

2025 is a momentous year as we launch Volume 20—and thus celebrate—the 20^th Anniversary of the Journal of Southeast Asian American Education and Advancement (JSAAEA)! For two decades now JSAAEA has provided readers from all over the world with an interdisciplinary online academic peer-reviewed journal featuring scholars and writers from diverse fields who share a common interest in Southeast Asian (SEA) Americans and their communities. And it has done so through a completely free and fully accessible Open Access publishing model without any author publishing fees or reader subscription charges. 2025 also marks another important historical milestone—the 50^{th …}

A Poetry Collection, Jenna Le

Journal of Southeast Asian American Education and Advancement

This is a poetry collection by Jenna Le.

Literacy Skills And Practices In Cambodian-American Families: A Portraiture Of Ten Women, Sothy Tep

Journal of Southeast Asian American Education and Advancement

Abstract:This research article describes the literacy skills and practices in ten Cambodian-American (CA) families within their home environment. It also investigates such contextual problems as CA students not being a part of the Asian model minority and the invisibility that some experience at school.Its literature review addresses the evolving concept of family literacy scholarship, specifically diversity scholarship, with a conceptual framework focusing on Dewey’s (1916) ideas linking family literacy ultimately to human empowerment, hope, progress, growth, and meaning within society. A narrative inquiry technique called portraiture is employed to collect the data of its ten participants’ …

Midwest Entrepreneurship Case Competition Page In The Pitch Platform, Zoeanna A. Mayhook, Annette H. Bochenek, O'Neill Terence, Ilana Stonebraker

Libraries Faculty and Staff Supplemental Materials

This is an archived version of the competition page for the 2024 Midwest Entrepreneurship Case Competition, a regional, library-led business case competition held from February 10–24, 2024. The page was hosted on Purdue University’s Pitch Platform, an in-house system for managing case competitions. This page was captured on January 7, 2025.

Book Review Of A Career In Student Affairs, Brandon Xiong

Journal of Southeast Asian American Education and Advancement

A Career in Student Affairs: Reflections from Hmong Student Affairs Educators is a collection of unique experiences from Hmong professionals who work in student affairs, edited by Dr. Soua Xiong and Dr. Brian V. Xiong. This volume highlights different stories about how Hmong students came into their current student affairs careers. Each chapter has important advice for Hmong students considering a career in student affairs and examine what it means to be a first-generation Hmong student affairs professional. The collection of stories beautifully captures the hopes and dreams of those who immigrated from Thailand to America. In comparison, the book …

#35 Understanding In Lao, Victoria Gill

Journal of Southeast Asian American Education and Advancement

This piece is a celebration, an interpretation, and translation of Lao words and of the Lao language as poetry. This poem dissects and discuss the differences between how the word "understand" is conceptualized and embodied in the Lao language versus English. Further, it shows how in Lao, there are even deeper nuances between what it means "to know" versus "to understand" in Lao.

A Continuum Mechanical Model Of The Brain During Closed Head Injury, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Working Papers

Exactly how traumatic axonal injury happens as a result of brief, intense acceleration of the head remains a mystery. The same can be said about traumatic microbleeds observed in MRI scans of people suffering concussions. This paper explores the mechanism of injury in terms of continuum biomechanics. A full-sized viscoelastic model of the human brain is developed that is subjected to impact with the rigid skull after crossing the subarachnoid space in response to brief, intense whole head acceleration, as might occur in falls or in contact sports. The brain is considered a compressible viscoelastic body of approximately uniform density, …

Sound Sensor Networks And Sub/Urban Health: A Transdisciplinary Approach Using The Purdue Campuses As A Living Lab, Kurt Khaustov, Harshitha Pathania, Sophia Victoria Pimentel, Irem Ucar, Linda Ronglin Xu, Santosh Sai Ramesh, Zhengyi Jiang, Elian Inigo Turcal Rieza, Nathan Sing Lee, Ryce Pi, Atandrila Chowdhury, Felipe Saavedra Cardona, Tae Hong Park

Discovery Undergraduate Interdisciplinary Research Internship

Our project investigates environmental soundscapes in West Lafayette and on the Purdue campus - including the Purdue Airport with its newly reopened commercial terminal - treating these sites as a living laboratory. Conducted under the Discovery Undergraduate Interdisciplinary Research Internship (DUIRI) with mentorship from Dr. Tae Hong Park and his Citygram research, the study integrates engineering, data science, and acoustic ecology.

Building on the Soundscaper system, we are developing an interactive sound-mapping interface that allows users to hear synthetic soundscapes representing real-world conditions. We implement a geospatial-audio pipeline that links OpenStreetMap (OSM) data to our Object-Oriented Soundscape Synthesis (OS2) framework. …

Application Of Physics-Informed Neural Networks On Crop Yield Prediction At Multiple Scales, Aditya P. Prabhu, Pratishtha Poudel, James V. Krogmeier

Discovery Undergraduate Interdisciplinary Research Internship

Accurately predicting crop yields is a critical challenge in sustainable agriculture, food security, and farm management. Traditional process-based models rely on agronomic domain knowledge, crop physiology and statistical approaches, while purely data-driven approaches leverage machine learning or deep learning models using meteorological and spatial data. Unfortunately, these black-box models(Data-drive approaches) often lack interpretability and fail to incorporate well-established physical principles. This project explores a hybrid approach by implementing Physics Informed Neural Networks, mainly, physics-based recurrent neural networks (PI-RNNs) for time-series yield prediction. PINNs allow for the integration of scientific knowledge directly into the model by embedding physical laws as constraints …

Identifying Doxorubicin-Induced Cardiotoxicity Using 4d Echocardiography, Bea O. Cabot, Cortland Johns, Benjamin Zeidler, Anna Webb, Wilhelm Smith, Aasish Karuturi, Craig J. Goergen

Discovery Undergraduate Interdisciplinary Research Internship

Doxorubicin is an effective, commonly used chemotherapeutic drug. However, this drug is accompanied with disadvantages. Specifically, doxorubicin is associated with cardiotoxicity, characterized by left ventricle dysfunction. We hypothesize that 4D ultrasound imaging can reveal cardiac changes associated with doxorubicin-induced cardiotoxicity earlier in disease progression than 2D ultrasound imaging. To test this hypothesis, C57BL/6J mice were separated into treatment or control groups. Intraperitoneal injections were administered weekly for 4 weeks, each dosage equivalent to 4 mg/kg of either doxorubicin (treated) or saline (control). A Vevo3100 high frequency ultrasound system (FUJIFILM VisualSonics) was used to collect 2D and 4D ultrasound images of …

Mapping Pilot Stress And Fatigue During Flight Sessions, Atandrila Chowdhury, Sudip Vhaduri, Julius Keller, Mark Wilson, Debra Henneberry

Discovery Undergraduate Interdisciplinary Research Internship

This study examined physiological and self-reported indicators of stress and fatigue in four student pilots during training flights at Purdue University. Each pilot wore a wrist sensor that recorded heart rate, electrodermal activity, temperature, and acceleration, and completed pre and post-flight ratings of stress, fatigue, and sleep questionnaire. The pilots flew different types of training sessions, providing variation in environmental and flight conditions. All physiological data were cleaned and standardized before analysis. Across pilots, temperature and electrodermal activity generally increased during flight, showing a gradual rise in arousal that can come from several factors, including heat, physical effort, and normal …

Jase 5.1 Table Of Contents

Journal of the Arts and Special Education

No abstract provided.

Jase 5.1 Cover, Kathy Nimmer

Journal of the Arts and Special Education

No abstract provided.

Stone Matrix Asphalt (Sma) Overlay Performance Evaluation, Jusang Lee, Jongmyung Jeon, Abdullah Al Mamun, Maya Khajehvand, John E. Haddock

JTRP Technical Reports

Stone matrix asphalt (SMA) is a specialized asphalt mixture designed to improve pavement performance by combining a coarse aggregate skeleton with a high-binder content mortar. This innovative design, adopted by the Indiana Department of Transportation (INDOT) in the late 1990s, offers distinct advantages over conventional hot mix asphalt (HMA). Currently, INDOT SMA-surfaced pavements are undergoing a second round of rehabilitation, which presents a valuable opportunity to assess their performance and return on investment (ROI). In Indiana, steel slag is used as the primary SMA coarse aggregate because of its toughness and durability. However, it may be possible to use other, …

Effective Shoulder Width On Rural Highway System Related To Roadway Departure Crashes, Mario A. Barahona, Vamsi Krishna Bandaru, Mario A. Romero, Andrew Tarko

JTRP Technical Reports

Roadway design plays a crucial role in traffic safety, particularly on rural roads. This research investigates the safety effectiveness of shoulder width on Indiana’s rural two-lane highways, and to use this understanding to provide a basis for more effective shoulder improvement programs. Although previous studies have established the benefits of shoulder widening in other states, limited research has been conducted in Indiana conditions. This research aims to evaluate the safety effectiveness of shoulders on rural roads in Indiana and to propose a practical and systemic approach to identifying road segments that require additional attention and possible need for shoulder improvements. …

Advancing Accelerated Bridge Construction And Fabrication In Indiana, Camila Duarte, Ashley Thrall

JTRP Technical Reports

The aim of this research was to increase the use of the accelerated bridge construction (ABC) and accelerated bridge fabrication (ABF) in Indiana. Specific research objectives included: (1) understand barriers to implementing ABC and evaluate ABF capabilities in Indiana, (2) investigate the benefits and limits of various ABC/ABF strategies specific to Indiana, and (3) develop guidelines and recommendations for implementing ABC/ABF in Indiana. The focus was on the scoping stage, with the goal of triggering which projects are candidates for ABC or ABF early in the process. Research culminated in (1) a system-level analysis tool that scores all bridges in …

Chondrogenic And Chondroprotective Response Of Composite Collagen I/Ii-Hyaluronic Acid Scaffolds Within An Inflammatory Osteoarthritic Environment, Carly M. Battistoni, Javier Munoz Briones, Douglas K. Brubaker, Alyssa Panitch, Julie C. Liu

School of Chemical Engineering Faculty Publications

Inflammation plays a key role in cartilage damage that occurs in osteoarthritis (OA). However, in vitro assessments of tissue-engineered constructs for cartilage regeneration generally do not consider their performance in the presence of inflammation. In this work, the chondrogenic differentiation potential of mesenchymal stromal cells (MSCs) was evaluated in the presence of both chondrogenic factors and inflammatory cytokines, and cartilage formation, degradative response, and inflammatory response were characterized. The addition of cytokines reduced cartilage production, increased cell proliferation, and resulted in an increase in inflammatory markers. Incorporation of hyaluronic acid (HA) had little impact on both collagen fibril microstructure and …

Assessing The Asset Management Programs Of Locals: Bridges And Pavement Conditions, Richard Ajagu, Dongyoon Song, David Holguin Mejia, Deepak Benny, Mohammadhosein Pourgholamali, Isaiah C. Mwamba, Kumares Sinha, Samuel Labi

JTRP Technical Reports

Indiana’s 2016 House Enrolled Act (HEA) 1001 provided a funding mechanism for transportation infrastructure that required Local Public Agencies (LPAs) to have an Asset Management Plan (AMP) to be eligible for funding. In 2022, the Indiana General Assembly desired to know the extent to which LPAs had adopted AMPs in response to this legislation. This study’s literature review found that LPAs nationwide are increasingly adopting asset management practices. Analysis of aggregate data on local road expenditures and revenues in Indiana showed significant reductions in maintenance expenditures in post-HEA 1001-2016 years, suggesting the efficacy of the 2016 legislation. The data trend …

Development Of Web Portal For The Management, Visualization, And Analysis Of Collected Mobile Lidar Data Along Indiana’S Transportation Corridors, Sang-Yeop Shin, Hanjin Kim, Arnav Goel, Jinha Jung, Ayman Habib

JTRP Technical Reports

Efficient road management requires collecting and analyzing various geospatial data related to transportation corridors. Mobile Mapping Systems (MMS), integrated with GNSS/INS units, RGB cameras, and LiDAR technology, enable the collection of geo-tagged imagery and 3D point cloud data across roadway networks. Acquired data helps in the inventory and management of transportation networks. However, users face challenges in accessing high data volumes, especially when considering hardware and software requirements. To address these challenges, the Purdue research team developed a web portal to efficiently store and provide easy access to geospatial data collected along Indiana’s transportation corridors. The web portal provides an …

Autonomous Mower Pilot Project, John T. Evans, Greg M. Shaver, Michael A. Mardikes, Nathan C. Sprauge, Timothy J. Wiegman, Shreyas Supe, Ethan M. Brown

JTRP Technical Reports

The Indiana Department of Transportation (INDOT) spends approximately $19 million annually on roadside mowing, which is a process that is time-consuming, costly, and poses safety risks. Automated mowing solutions have the potential to reduce costs and increase safety, but they will need to be extremely well tested before being deployed. In this work, data from current mowing practices was collected using machine mounted cameras, which was used to inform the creation of a digital twin environment that allows for rigorous initial testing of potential autonomous solution with no risk. The digital twin was created using digital elevation models of Indiana …