Digital Commons Network^™

First Opinion: El Doctorcito / The Little Doctor, Andrew Jamison

First Opinions, Second Reactions

No abstract provided.

Editorial: Building Belonging Across Languages: Spanish-English Picturebooks In Conversation Construyendo Pertenencia Entre Lenguas: Libros Bilingües En Diálogo, Brenda Sarmiento-Quezada, Dafne Zanelli

First Opinions, Second Reactions

No abstract provided.

Model-Based Investigation Of The Influence Of Environmental Conditions On The Energy Supply Of Multirotor Uavs, Morten Roßberg, Hanna Dibbern, Claudia Werner

Journal of Aviation Technology and Engineering

Flight time of unmanned aerial vehicles (UAVs) is limited by available energy, which is affected by the mission profile and external factors, such as environmental conditions. Two main environmental conditions that need to be considered are the impact of wind and ambient temperature on the UAV and its energy supply. The purpose of this study is to examine the effects of wind and ambient temperature to conduct a preliminary evaluation of flight performance and flight limitations. For this reason, three locations in the United States—New York City, Miami, and Fairbanks—are selected and the impact of the considered environmental conditions of …

Human Vaccine Hesitancy Spillover In The Field Of Veterinary Medicine: A Systematic Narrative Review Of Impacts And Veterinary Responses, Allison Schimpf

HEAL Project Outputs

Human vaccine hesitancy spillover in the veterinary field is a relatively new concept that has gained traction since the COVID-19 pandemic. Concerns about vaccine safety have increased among pet owners leading to questions about the potential impacts of reduced vaccination and how veterinarians can address these attitudes. A systematic search strategy following PRISMA 2020 guidelines was used with 3 different databases to collect peer-reviewed research articles from 2022 until now. The initial search yielded 376 articles for review and 11 were included after screening. Articles were analyzed using a narrative review format. Results showed that pet owners are more vaccine …

Ms-Ls2-1: Resource Availability, Maddie Epler, Eden Jasicki

5th Grade

No abstract provided.

5-Ls2-1: Ecosystems, Emily Koone, Lilly Cadwallader

5th Grade

No abstract provided.

Ms-Ess1-1: Moon Phases, Kaela Cortese, Olivia Johnson, Piper Ellis

5th Grade

No abstract provided.

4-Ps3-1, Elise Louk, Carlie Cox, Avery Kelker

4th Grade

No abstract provided.

Physics-Based Modelling Of Concrete Degradation Phenomena: Impact Of Construction Defects On Long Term Cost And Material Properties, Manuel Salmeron, Oscar D. Forero, Talha Faiz Mohammed, Kabir Shrivastava, Shirley J. Dyke, Julio A. Ramirez

JTRP Technical Reports

The quality of workmanship and adherence to specifications during the bridge construction phase of concrete decks, slabs, and continuous T-beams, are key factors on which future structural performance and durability hinge. If construction practices do not meet the required standards of quality, they may trigger early onset of deterioration processes that shorten the service life leading to unplanned interventions or unscheduled repairs, thus intensifying the need for maintenance actions and increasing costs during the service life of the bridge. Despite the consensus view that substandard construction practices reduce the performance of concrete structures, quantifying the impact is challenging. This difficulty …

Assessment Of Temperature Correction Factors For Falling Weight Deflectometer Deflections, Pablo Orosa Iglesias, Jin Li, Bongsuk Park, Seonghwan Cho, John E. Haddock

JTRP Technical Reports

This study presents the development of an improved temperature correction methodology for falling weight deflectometer (FWD) deflections in full-depth asphalt pavements. The objective was to address the limitations of existing correction methods by integrating viscoelastic pavement behavior, structural properties, and realistic thermal gradients. Field temperature data from instrumented sites in Indiana were used to train a machine learning model capable of predicting pavement temperature profiles in flexible pavements. These predictions informed a series of finite element simulations that captured pavement responses to FWD loading under a range of thermal and structural conditions. Temperature correction factors were then derived and modeled …

Research Support To Indot On Systemwide Asset Condition Assessment Using Connected Vehicle Data, Andrew Thompson, Jairaj Desai, Rahul Suryakant Sakhare, Darcy M. Bullock

JTRP Technical Reports

Crowdsourced pavement roughness data using connected vehicles now provides cost-effective, high-resolution condition monitoring in near real-time. This study evaluates how connected vehicle data can support effective investment prioritization across Indiana’s road network and improve upon traditional data sources using surveys that are often done annually or biennially. A key challenge is handling terabyte-scale geospatial roughness datasets and integrating them meaningfully into asset management workflows. A scalable data processing methodology is outlined to address this issue and is used for the subsequent analysis.

This report’s analysis uses more than 3 billion daily CV-estimated roughness measurements (IRICVe) from 2022–2025, in addition to …

Pedestrian And Bicyclist Trespassing Impacts On Rail Grade Crossings Safety And Mobility, Shanyue Guan, Siqi Chen, Shufan Liu, Samy Noureldin, Bridgette Hail, Brandon Burgoa, Elizabeth Mouser, Alison Shaner, Paige Story, Karen Stippich

JTRP Technical Reports

Highway roads intersect with a railroad track, forming a multimodal transportation system. The intersection is called a highway railroad grade crossing (HRGC). Because of the multiple transportation operations, induced conflict at the grade crossing, crashes may happen between road users (e.g., automobiles, pedestrians, bicyclists, etc.) and trains in operations at highway railroad grade crossings. This is a global challenge for many countries around the world. According to the 2022–2026 Indiana Strategic Highway Safety Plan and 2022 Indiana Highway-Rail Grade Crossing Safety Action Plan, one of the biggest challenges facing Indiana is the higher numbers of pedestrians in and around crossing …

Utilizing Emergency Management Audio Messages For Traffic Incident Management Performance Measures, Christopher Gartner, Vihaan Vajpayee, Jairaj Desai, Darcy M. Bullock

JTRP Technical Reports

Timely and accurate information regarding roadway incidents is critical for Traffic Management Centers (TMCs) to maintain safety and mobility. While Intelligent Transportation Systems (ITS) cameras and crowdsourced data provide significant visibility, rural interstate corridors often suffer from coverage gaps, or "blind spots," where incidents go undetected until significant queuing occurs. Public safety radio communications serve as the primary coordination method for first responders, creating a "verbal infrastructure" that contains vital information regarding incident location and severity. This study evaluates the feasibility of using Automatic Speech Recognition (ASR) to bridge these gaps by monitoring and analyzing radio traffic. The project developed …

Feasibility Study On The Development Of Indiana’S Connected And Automated Vehicle Roadmap And Strategic Plan, Can Cui, Juanwu Lu, Yupeng Zhou, Abin Mathew, Jue Zhou, Ziran Wang, Yaobin Chen

JTRP Technical Reports

This study provides INDOT with critical insights into major OEMs’ connected and autonomous vehicle (CAV) development plans and related research and demonstration activities in several surrounding states, guiding infrastructure investment and policy decisions. The report delivers three outputs that guide the CAV technologies implementation in Indiana. First, it synthesizes the best regional practices and industry direction to distinguish what is feasible now from what requires further development. Second, it establishes a technical baseline that links priority applications to sensing and communications architectures with explicit attention to interoperability, security, and maintainability. Third, it defines an implementation framework that connects capital and …

Guidelines For Use And Design Of Deep Foundations For Three-Sided Structures, Yao Wang, Rodrigo Salgado, Monica Prezzi

JTRP Technical Reports

Buried three-sided structures are widely used for roadway crossings and underpasses. Whereas spread footings are common, deep foundations are required when weak soils, scour risk, or site constraints exist. This study aimed to improve understanding of load-transfer mechanisms and develop guidance for the design of deep foundations supporting buried three-sided structures.

A nationwide survey of 34 state DOT engineers and 12 three-dimensional finite element analyses were conducted. Results show that greater stem wall height and thicker earth cover lead to a more uniform live-load distribution between piles. The most critical condition occurs when the design truck is placed near the …

Rampcast Phase Ii: Connected Vehicles Traffic Management Application On Indiana Highways, Abin Mathew, Agnideven Palanisamy Sundar, Juntong Peng, Jue Zhou, Yaobin Chen, Feng Li

JTRP Technical Reports

This project advances connected vehicle applications by developing and testing an enhanced RampCast system, a comprehensive traffic management system using C-V2X technology for Indiana highways. The system features a dual-mode architecture integrating both short-range (PC5) and long-range cellular (Uu) C-V2X communication pathways, utilizing commercial-grade Cohda MK6 hardware and adhering to SAE J2735 standards to ensure interoperability. A key innovation is the integration of an AI-based prioritization framework, which leverages a large language model to enhance the contextual relevance of traffic messages. This AI system introduces two intelligent agents: one to dynamically estimate the appropriate display distance for an event based …

Integration Of Bim For Bridge Modeling, Jiansong Zhang, Hang Li, Temitope Akanbi, Hosam Hegazy, Fan Yang, Meta Soy, Yunfeng Chen, Hazar Nicholas Dib

JTRP Technical Reports

Existing INDOT bridge projects mainly use PDF plans for the official deliverables and records to be communicated, transferred, and stored among different stakeholders. With the Industry Foundation Classes (IFC) BIM standard (ISO 16739) adopted by AASHTO as the national standard for modeling bridge projects, there comes a great opportunity to upgrade the documentation of INDOT bridge projects to 3D BIM in compliance with this national standard, while at the same time addressing the need to manage and retrieve project information in a more convenient and efficient way. In addition, INDOT needs to achieve the goal of meeting new Specifications for …

Identify Bridge Design Guidelines For Wildlife Crossings, Jon Padfield, Kyle Squillace

JTRP Technical Reports

Annual vehicle miles driven in the United States doubled, from 1.6 trillion to 3.2 trillion in the 40 years between 1983 and 2023. Unfortunately, one side effect of the increase in vehicle miles driven has been the prevalence of Animal-Vehicle Collisions (AVCs).

As early as 1975, efforts began in some Western states to create safe animal passages such as the wildlife overpass over I-15 in Beaver, Utah. Wildlife passages increased in popularity from the 1970s through the 1990s, but they were mainly being designed and constructed in the Western United States.

Today, there is increasing and broader interest in safe …

Influence Of Nanomaterials-Based Admixtures And Polymeric Microspheres On Entrained Air Void System And Freeze-Thaw (F/T) Resistance Of Concrete, Alberto Castillo, Jan Olek, Mirian Velay-Lizancos,

JTRP Technical Reports

This study investigated the feasibility of using colloidal nanosilica (nS) as microstructure modifier and polymeric microspheres (MS) as alternative air-entrainment systems for Indiana Department of Transportation (INDOT) bridge deck concrete. These admixtures have gained interest due to their potential to modify the air-void system, enhance freeze–thaw (F/T) resistance, reduce permeability, and improve early-age performance. However, their field applicability depends on understanding their sensitivity to mixture composition, type of batching process, consolidation practices, and water-to-cement (w/c) ratio. The objectives of this research were to: (1) conduct field trials incorporating nS and MS and evaluate both fresh and hardened properties, (2) compare …

The Business Case For Sustainable Road Infrastructure Development, David Holguin Mejia, Deepak Benny, Dong Yoon Song, Konstantina Gkritza, Kumares Sinha, Samuel Labi

JTRP Technical Reports

This study developed a business-case framework for embedding sustainability into the Indiana Department of Transportation’s (INDOT) practices. The study first identified the role of sustainability in road infrastructure development, and then discussed strategic plans, sustainability programs, and institutional challenges that shape how sustainability actions are conceived and executed. The study reviewed existing sustainability rating systems, established exposure metrics, and subsequently developed a business-case framework called the Road Infrastructure Sustainability Evaluation (RISE) to guide INDOT in embedding sustainability across the full infrastructure lifecycle, from planning through end-of-life. RISE follows a multicriteria analysis approach, incorporating indicator selection, criteria evaluation, weighting, normalization, and …

Receiver, Vehicle, And Roadway Systems For A Dynamic Wireless Power Transfer Roadway Testbed, Oscar Andrés Moncada, Isaac Abram, Nicholas Frooninckx, Vatan Mehar, Chiara Cervini, O'Brien Ben, Bruno Cesar Krause Moras, Steve Pekarek, John E. Haddock, Dionysios Aliprantis, Aaron Brovont, Konstantina Gkritza, Rob Swanson

JTRP Technical Reports

A dynamic wireless power transfer (DWPT) system using a novel three-phase transmitter/receiver design was embedded 2.4 in beneath the surface of an existing rigid pavement on US 52/US 231 in West Lafayette, Indiana, with 85 coils installed and paired with a retrofitted Class-8 Cummins electrified truck. The system successfully delivered 50–190 kW at speeds up to 65 mph with efficiencies approaching 85%, and all coils met electromagnetic balance targets; similar results were validated on a 3-coil testbed at Utah State University, with magnetic flux densities well below human exposure limits. Testing also demonstrated strong misalignment tolerance and reliable high-power delivery …

Agricultural Evidence Synthesis At A Critical Juncture: Quality Gaps And Implications For Evidence-Based Agriculture, Chao Cai, Jane Yatcilla, Justyna Czader, Sylvie Brouder, Jeffrey Volenec

Libraries Faculty and Staff Scholarship and Research

Systematic reviews and meta-analyses have become essential tools for synthesizing evidence to guide agricultural policy and practice, yet whether these syntheses are themselves conducted with sufficient rigor has rarely been systematically assessed. This study provides a field-wide assessment of reporting quality in agricultural evidence synthesis, examining whether existing reviews are conducted with sufficient transparency and rigor to support the policy and practice decisions they are meant to inform. We drew a random sample of 244 systematic reviews and meta-analyses from a bibliometric dataset of 1,709 articles published between 1997 and 2023, evaluating reporting quality using a 12-indicator rubric across four …

Shifting Attitudes Toward Healthy Food Choices In Schoolchildren, Krishna Nemali

Purdue Extension Numbered Publications

Nearly a third of Indiana children ages 10 to 17 are overweight or obese. Healthier food choices could make a difference. This publication details what happened when a Purdue professor coupled experiential learning (gardening) with a plant sciences curriculum in a rural Indiana intermediate school.

Greenhouse Construction, Krishna Nemali

Purdue Extension Numbered Publications

Modern greenhouses do not resemble their hobby-scale 19th-century predecessors. Knowledge of construction requirements, location considerations, orientation, structural stability, etc., is vital. In this six-page publication, a Purdue University professor provides detailed, clear introductory knowledge about greenhouse construction.

Pitch Report: Purdue Ivy Tech Chips Evaluation Report, Jennifer Sdunzik

Evaluation and Learning Research Center Reports

The Purdue Ivy Tech CHips (PITCH) program is a university-industry-community partnership aimed at developing an educational pipeline capable of providing a qualified workforce for the growing semiconductor industry in the region. Increasing student interest in microelectronics, awareness of current and future microelectronics careers, and self-efficacy to pursue microelectronics opportunities are foundational to building the industry’s workforce. The PITCH program addressed these needs by offering a summer experience that introduced high school students to the semiconductor industry.

The PITCH leadership team engaged Purdue's Evaluation and Learning Research Center (ELRC) to (1) identify (short and longer-term) impacts of the summer program on …

“It Feels Like A Safe Container”: Experiences Of Finding Solid Ground Groups For Adults With Dissociative Disorders., Laura Hawkins, Sarah Chipps, Kim Foreman, Stephanie Johnson, Aimee Mccann, Rebecca Braughton, Abidemi Mary Ajuwon, Dongjuan Xu

School of Nursing Faculty Publications

Objective: Dissociative disorders (DD) are trauma-related conditions marked by disruptions in memory, identity, and consciousness. Despite high prevalence, DDs are underdiagnosed and undertreated. This study explores the experiences of adults with DD participating in a 31-week Finding Solid Ground (FSG) psychoeducational group. Method: Participants (N=72) were mostly women (81%), who experienced a DD or PTSD dissociative subtype, along with multiple mental health comorbidities. Eight groups (seven virtual, one in-person) completed 31 weekly 90-minute sessions based on the FSG curriculum as adjunctive to individual psychotherapy. Thematic qualitative analysis was used to analyze participants’ hopes, challenges, helpful and unhelpful aspects, and perceived …

Simplified Traffic Studies For Local Agencies, Laura Slusher

Indiana Local Technical Assistance Program (LTAP) Publications

Traffic studies are critical in the decision-making process for many transportation-related projects, funding requests, paving and plowing priorities, and in reporting to elected officials and the public. It is often difficult for local jurisdictions with limited equipment, staff, and time to perform these studies or have the funds available to hire them out. This handbook describes simplified procedures that are easy to apply and are written for all potential users.

Advancing The Iot4ag Agbridge Program Through Continuous Improvement Practices, Yury A. Kuleshov, Yaguang Zhang

Indiana STEM Education Conference

The authors are implementing improvements to the pilot AgBridge program. The AgBridge program is a mentorship program that brings together graduate students in engineering and/or engineering technology and education and matches them with educators in agriculture-related fields with support from faculty members and volunteers. Each team creates an educational product for use in a K-12 classroom, such as school curriculum focused on a research project. The program approach differs from a conventional post-secondary classroom, where students of different majors have minimal interaction with one another and have limited input from practitioners and/or industry professionals. The authors used feedback data to …

Proceedings Of The Eleventh Annual Indiana Stem Education Conference: Stem Journeys, William S. Walker Iii, S. Selcen Guzey

Indiana STEM Education Conference

The Proceedings of the Eleventh Annual Indiana STEM Education Conference are edited by the Center for Advancing the Teaching and Learning of STEM (CATALYST, https://www.education.purdue.edu/catalyst/) at Purdue University. The theme for the 2026 conference is STEM Journeys, celebrating the multiple pathways and experiences that advance student learning in STEM education.

Renewable Energy Innovation: A Mathematics-Driven Integrated Stem Approach For K-12 Classrooms, Humphrey Chinenye Ochulor, Dayat Hidayat

Indiana STEM Education Conference

This research brief presents Renewable Energy Innovation (REI) as a mathematics-driven Integrated STEM (iSTEM) approach for engaging upper elementary and middle school students to design, analyze, test, and refine solar cars and wind turbines through mathematical modeling (MM) and problem solving (PS). Research suggests that renewable energy activities support students’ abilities to design systems, quantify variables, construct multiple representations, and refine mathematical models to clarify relationships between energy output and design features. Positioning mathematics as the driver in REI iSTEM engineering design contexts aligns with the Common Core State Standards for Mathematics and foregrounds mathematics as a primary organizing discipline …