Digital Commons Network^™

Evaluation Of Aggregate Gradation Specifications And The Feasibility Of Harmonization With Aashto Standards, Husam Elgaali, Ayesha Shah, Jan Olek

JTRP Technical Reports

The aggregate gradations specified by the Indiana Department of Transportation (INDOT) differ from those of the American Association of State Highway and Transportation Officials (AASHTO). Preliminary discussions suggest that adopting AASHTO standard gradation sizes could provide national alignment and simplify production for those operating in multiple states and supplying projects not subject to INDOT specifications. A comprehensive study was performed to evaluate the current INDOT specifications for coarse and fine aggregate gradations and to assess the potential impacts and feasibility of adopting AASHTO-specified gradations. A comparative analysis of INDOT gradations against AASHTO, ASTM International (ASTM), and those of neighboring states …

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 …

Implementation Study For In-Place Testing Of Asphalt Treated Cold Recycled Pavements, Pablo Orosa Iglesias, Cheng Zhang, Daniel Mauricio Santamaria, John E. Hadddock

JTRP Technical Reports

This study evaluated the feasibility of rapid in-situ strength test methods for asphalt-treated cold recycled (ATCR) pavements in Indiana, with a secondary objective of characterizing the dynamic modulus of a locally produced ATCR mixture for use as AASHTOWare Pavement ME Design inputs. The long-pin shear test (LPST) and short-pin raveling test (SPRT), developed through National Cooperative Highway Research Program (NCHRP) Project 09-62, were evaluated on a cold in-place recycling (CIR) project on SR 13 in Greenfield, Indiana. Field results for blow counts exceeded the proposed NCHRP threshold moments after compaction, with torque values approaching but not yet reaching the NCHRP …

Simulating Current And Future Ev Growth Scenarios In Indiana, Omar Faruqe Hamim, Xiaowei Chen, Kenny Chandra Wijaya, Lavan Teja Burra, Zengxiang Lei, Rajat Verma, Konstantina (Nadia) Gkritza, Satish Ukkusuri

JTRP Technical Reports

As Indiana transitions toward electric mobility, data-driven planning is essential to guide electric vehicle (EV) charging infrastructure investment and deployment. This study evaluates the current and future performance of Indiana’s EV charging infrastructure using Multimodal Energy-Efficient Trip Simulation in Real Time (METS-R), a high-resolution simulation platform. Five EV adoption scenarios, ranging from pessimistic to optimistic, are modeled for the years 2024 through 2031, to assess spatial and temporal variations in public charging demand. Results reveal increasing public charging demand under high adoption scenarios, with significant disparities between urban and non-urban areas. Accessibility to public charging is found to be uneven …

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 …

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 …

Portable Driving Simulation Platform For Innovative Intersections, Luyang Jiang, Zihao Li, David Chen, Blake Edwards, Angel Rivera Cardenas, George Takahashi, Brandon Pitts, Ziran Wang

JTRP Technical Reports

This report presents a portable driving simulation platform developed to improve public understanding and evaluation of innovative intersection designs. Built in Unity, the system integrates real-world roadway data with modular traffic and vehicle simulation to create realistic, interactive driving scenarios. Results show the platform effectively supports driver learning and stakeholder engagement, demonstrating its feasibility as a tool for education, safety analysis, and deployment support of innovative intersections.

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 …

Demonstration Of Infrared Pavement Heater, Dwayne Harris

JTRP Technical Reports

Indiana Department of Transportation (INDOT) maintenance currently employs several patching methodologies; however, prior to this study, INDOT had little experience with using infrared pavement heaters as a maintenance tool.  The purpose of this research was to introduce pavement heating technologies and provide INDOT maintenance personnel with experience using these technologies.

Bridge Data Virtual Validator, Jiansong Zhang, Bo Pang, Meta Soy, Bernard Nartey, Yunfeng Chen

JTRP Technical Reports

This report presents Bridge Data Virtual Validator, which is a prototype web-based tool developed to support automated quality assurance (QA) of INDOT bridge project deliverables. The project focuses on Final Tracings documents, where important bridge data are distributed across bridge plans, cost estimates, and other documents/elements. Two validation components were developed. The first component supports bridge plan format compliance checking by using optical character recognition (OCR), computer vision, and rule-based reasoning to identify missing or inconsistent letting control information such as file numbers, dates, stamps, signatures, and sheet numbers. The second component performs comparative checking of pay items between bridge …

Exploring Autonomous Maintenance Technologies (Amt) In Indot Road Maintenance Activities: A Feasibility Study, Ajuna Puthenpurackal John, Cong Zhang, Yunfeng Chen, Yiheng Feng

JTRP Technical Reports

This project conducted a feasibility study of adopting autonomous maintenance technologies (AMTs) for Indiana Department of Transportation (INDOT) road maintenance activities. It surveyed state DOT representatives on AMT adoption, reviewed candidate AMT products and automation levels, and conducted a preacceptance survey to INDOT maintenance personnel. The market and technology reviews identified 51 AMTs across eight categories: snowplowing, mowing, crack sealing, pothole patching, traffic-control-device setup and retrieval, sweeping, culvert inspection, and roadway inspection and three automation types: full automation, partial automation, and remote operation. The INDOT survey showed cautious, technology-specific acceptance, with highest near-term potential for traffic control device setup, culvert …

Indot Training Gap Analysis, Developing A Training Program For Indot Workforce Development (New, Front-Line, Supervisors) And Smart Tool For Effective Planning For Workforce, Steven R. Dunlop, Satish V. Ukkusuri, Yunfeng Chen, Dutt J. Thakkar, Eunhan Ka, Shagun Mittal, Xinran Hu, Ze Wang, Isha Khanna, Rithesh Tammineni

JTRP Technical Reports

The primary goal of the study was to understand reasons for workforce turnover, addressing INDOT’s employee attraction and retention strategies. This objective was achieved by dividing the project into four tasks, each focusing on different criteria. Task A focused on understanding workforce development needs and gaps by determining training opportunities available at INDOT and understanding the different training methods and frequency of training required. Additionally, Task A also benchmarked workforce development programs with industry and other neighboring states. Task B comprised performing a comprehensive numerical and text data analysis of the workforce using exit interview data to identify the reasons …

Development Of Indiana-Specific Trip Generation Procedures And Models Of E-Commerce Demand: Implications For Indot’S Travel Demand Modeling And Investment Planning, Rishika Srinivasa Tumula, Zhuoli Yin, Hua Cai, Nadia Gkritza

JTRP Technical Reports

This study aims to improve Indiana’s travel demand modeling practices by incorporating locally collected trip generation data and emerging e-commerce travel trends into INDOT’s planning framework. The research focuses on two primary objectives. First, it enhances trip generation procedures for high-impact land uses in Indiana, including warehouses, fast-food restaurants, gas stations, and truck stops. This effort includes reviewing existing ITE land use categories, prioritizing land uses for phased data collection, and developing improved trip generation equations that incorporate Indiana-specific independent variables and adjacent traffic conditions. Second, the study develops models to capture the transportation impacts of rapidly evolving e-commerce behavior. …

Examining The Role Of Transformational Leadership In Reducing Employee Burnout In Vitas Healthcare: The Impact Of Leadership Behaviors On Morale And Job Satisfaction., Sabrina L. Clarke

Doctor of Strategic Leadership (DSL) Capstone Abstracts

The capstone project, Curing the Caregivers: Ending the Burnout Epidemic, examined how transformational leadership can address employee burnout among healthcare professionals. This seminar was an applied leadership project with four modules. The project aimed to educate healthcare employees about burnout and introduce transformational leadership strategies that could create healthier, more supportive work environments. This seminar took place at Vitas Healthcare in Lakeland, Florida. Pre-seminar and post-seminar questionnaires were used to evaluate participants' understanding of transformational leadership. The capstone project addressed five major themes: employee burnout, transformational leadership, employee morale, job satisfaction, leadership strategies for reducing burnout, and supportive workplace environment. …

Developing And Evaluating A Multidimensional Measure Of Pride In The Lgbtqia+ Community, Donovan Edward

College of Graduate Studies: Theses & Dissertations

Pride in LGBTQIA+ spaces has thus far been an ethereal concept with no universally agreed-upon definition. Previous literature frequently connects pride to traits such as resilience, comfort, confidence, and identity expression. This is a critical oversight, as most measures of LGBTQIA+ experiences focus on the negative aspects of queer experiences (e.g., vulnerability, victimization) or are created to evaluate non-LGBTQIA+ perceptions of LGBTQIA+ people, falsely characterizing this community in a deficit-based light. In response, this study aimed to offer a holistic definition of pride and develop a psychometrically sound measure of pride stemming from culturally salient expressions by using rigorous analytical …

Remember To Say Her Name - Addressing Black Women's Experiences Of Vicarious Police Brutality And Testing A Racial Trauma Meditation, Gabriella A. Roper

College of Graduate Studies: Theses & Dissertations

Black women and girls are disproportionately impacted by police violence, as some are victims of brutality but also as viewers of police violence videos and advocates for police reform (Williams, 2021). Yet, most media coverage centers on police brutality against Black men, rendering the suffering of Black women largely invisible. Studies indicate heightened rates of distress experienced by Black women as a result of race-based stressors, compounded by their limited access to adaptive coping mechanisms (Beauliere, 2022; Hawkins, 2022). This study investigated the psychological effects of vicarious police brutality exposure on Black women. In addition, this study evaluated the effectiveness …

Advancing Interoperability Through Governance And Sustainability: A Qualitative Comparative Case Study Of State Health Information Exchanges In The United States, Karterria Finkley

College of Graduate Studies: Theses & Dissertations

This study presents a comprehensive comparative analysis of state-level Health Information Exchanges (HIEs) across all 50 U.S. states and the District of Columbia, examining how governance structures, consent frameworks, funding models, and technical infrastructure influence interoperability maturity, sustainability, and adoption. Guided by Systems Theory and Donabedian’s Structure Process Outcome framework, the research employs a mixed-methods comparative case design integrating systematic documentary review, qualitative thematic analysis, and a policy-anchored analytic scoring methodology. Structural and policy characteristics were operationalized through standardized ordinal (1-5) metrics and aggregated into composite indices representing governance capacity, consent inclusivity, financial sustainability, and technical readiness. This approach enabled …

Examining How Engagement Strategies Of Principals Influence Teacher Retention In Urban Title I Schools, Bridgette Allen

College of Graduate Studies: Theses & Dissertations

As the teacher shortage continues to rise, it is critical for educational leaders to focus on teacher retention. Principals play a significant role in teacher retention, teacher engagement, and job satisfaction; therefore, they must implement effective engagement strategies to improve teacher retention. The purpose of this basic qualitative study is to explore how engagement strategies employed by principals at urban Title I schools contribute to teachers’ decisions to remain at these schools. The research question for this study examines teachers’ perspectives on how the engagement strategies used by their school principals influence their decision to remain in an urban Title …

Exploring Teacher Perceptions: A Comparative Analysis Of Departmentalized And Self-Contained Instructional Models In First And Second Grades, Jason R. Trotter

College of Graduate Studies: Theses & Dissertations

This qualitative multiple-case study examined the perceptions of first- and second-grade teachers who have taught in both the departmentalized and traditional self-contained instructional models. The study explored teachers’ perceived advantages and disadvantages of each model, examined how their experiences within each model influenced instructional strategies and classroom management approaches, and assessed their perceived impacts on student engagement and learning outcomes. Each grade level was a bounded case. This study was conducted at a Title I elementary school in Southeast Georgia, where both models were implemented.

Guided by social constructivism, semi-structured interviews were conducted with seven teachers (four first-grade and three …

Staff Perceptions Of The Roles, Responsibilities, And Effectiveness Of School Resource Officers In Ensuring School Safety, Jana B. Collins

College of Graduate Studies: Theses & Dissertations

School safety remains a critical concern in education, particularly in rural settings where resources, staffing, and community dynamics may differ from urban and suburban environments. The purpose of this quantitative study was to examine staff perceptions of the roles, responsibilities, and effectiveness of school resource officers in maintaining and enhancing school safety within a rural school system. A researcher-designed survey using a 4-point Likert scale was administered to teachers and staff members (N = 417). Descriptive statistics summarized overall staff perceptions, and analyses of variance (ANOVAs) examined differences based on demographic and professional characteristics. Findings indicated that staff generally …

Extracurricular Activities' Influence On High School Students' Academic Achievement, Michael Jones Jr

College of Graduate Studies: Theses & Dissertations

This quantitative study investigates the relationship between participation in extracurricular activities and academic achievement among high school students, as measured by Grade Point Average (GPA). This study uses a cross-sectional research design to analyze GPA data from Greenbrier High School in Evans, Georgia. Greenbrier is a part of the Columbia County School District and serves approximately 2,000 students. Historical data were collected from 2024-2025 school records and analyzed using t-tests and ANOVA to compare the impact of ECAs on academic achievement. The study analyzed differences in academic performance based on (a) participation versus non‑participation in ECAs, (b) the type of …

The Impact Of A Nf-Κb Signaling Inhibitor On The Antibacterial Activity Immune Response In The Cat Flea (Ctenocephalides Felis), Caroline M. Singer

College of Graduate Studies: Theses & Dissertations

Ctenocephalides felis are vectors of several bacterial pathogens that cause disease in humans and animals, including Bartonella henselae and Rickettsia felis. Successful pathogen transmission requires that microbes survive the immune defenses of the flea digestive tract following blood feeding. In insects, humoral immune responses are regulated primarily by the Toll and immune deficiency (IMD) signaling pathways, with the IMD pathway serving as the principal defense against Gram-negative bacteria. Although genomic and transcriptional evidence indicate that cat fleas encode and express components of the IMD signaling pathway, the functional roles of individual pathway components within the flea digestive tract remain …

The Efflorescence Of Apocalypticism (Imminent & Prepping Beliefs): Considering Informational And Motivational Regulatory Mechanisms, James T. Good Mr.

College of Graduate Studies: Theses & Dissertations

In the last quarter of the 21st century, apocalyptic beliefs emerged in scholarly and lay representations notably doubling over the last decade. With nearly forty percent of United States citizen reporting this belief, unfulfilled questions arose: What drives discrepancies in beliefs of an imminent end of the world? Additionally, what drives beliefs in the need to prepare for an end of the world? These individual questions were examined together in this study using Construal Level Theory (CLT) and Regulatory Focus Theory (RFT) in an attempt to identify how psychological mechanisms are significantly affecting the fluctuations, in these self-reported beliefs. A …

Experiencing Followership: A Hermeneutic Phenomenological Study Of Executive Assistants In Higher Education, Trina R. Smith

College of Graduate Studies: Theses & Dissertations

The burgeoning study of followership needs more follower-centric qualitative research that describes follower beliefs, attitudes, perceptions, and experiences. The traditional view of leadership is that a single person is responsible for the success or failure of a project, team, or organization. However, scholars have suggested that 80% of the success of a team or organization may be attributed to followership. Followership research is rapidly expanding, and scholars are calling for more empirical follower-centric research to add to the discipline. Likewise, the executive assistant (EA) position is one of increasing responsibility, but there are few empirical studies on EAs' experiences across …

Viscoelastic Behavior Of Magnetically Filled Pdms Elastomers: Influence Of Filler Loading And Particle Type, Madison Procyk

College of Graduate Studies: Theses & Dissertations

Magnetorheological elastomers (MREs) offer a promising pathway for soft, magnetically actuated drug‑delivery systems, yet material‑selection guidelines remain unclear due to limited comparative data across particle chemistries, size scales, and concentrations. This study systematically evaluates how magnetic filler type (carbonyl iron and magnetite) and particle size (micro vs. nano), at two weight percentages – 40 wt% and 50 wt% – in Sylgard 184 PDMS influence the viscoelastic behavior of MREs intended for compliant biomedical actuation. Eight particle formulations were prepared through sieving, controlled mixing, vacuum degassing, and isotropic curing, producing nineteen total specimens (16 with filler particles and 3 without). Dynamic …

A Real-Time Autonomous Mobile Robotic System For Crack Detection And 3d Laser Profiling In Construction Using Two-Stage Deep Learning, Emmanuella Ogun

College of Graduate Studies: Theses & Dissertations

This thesis presents an autonomous mobile robotic system that integrates real-time visual crack detection with laser-based three-dimensional profiling for building inspection. The system coordinates SLAM-based navigation, deep learning perception, and manipulator-guided measurement within a unified ROS 2 framework, enabling scan-on-demand workflows where laser profiling occurs selectively at visually detected defect locations. The detection pipeline employs a two-stage architecture combining U-Net semantic segmentation with Pix2Pix residual refinement, achieving 73.9% mean intersection-over-union and 76.4% F1-score on the CrackSeg9k benchmark while maintaining 16 frames-per-second real-time throughput. Real-world validation demonstrated 95% detection success on 80 campus images under challenging conditions. The profiling subsystem utilizes …

Ai-Driven Real-Time Detection Of Zero-Day Browser Exploits Using Webassembly-Based Instrumentation, Temitope Damilola Elijah

College of Graduate Studies: Theses & Dissertations

The rapid evolution of web browsers into fully fledged application execution environments has significantly expanded their attack surface, making them prime targets for sophisticated zero-day exploits that evade traditional signature-based security mechanisms. To address this challenge, this research proposes an AI-driven framework for real-time detection and analysis of zero-day exploits in web browsers by integrating browser-level telemetry monitoring, unsupervised anomaly detection, and large language model–based threat interpretation. The framework introduces a lightweight WebAssembly telemetry agent embedded within the browser runtime to capture low-level execution behaviors, including WASM module instantiation, memory growth patterns, network interactions, and runtime API activity. These telemetry …

Independent And Interactive Effects Of Stack Height And Heel Width On Spatiotemporal Parameters, Knee Joint Kinetics, And Ground Reaction Forces During Running, Hao Cai

College of Graduate Studies: Theses & Dissertations

This study investigated the independent and interactive effects of stack height (SH) and heel width (HW) on lower-extremity biomechanics during running. Specifically, the study examined how variations in midsole geometry influenced spatiotemporal parameters, knee joint kinetics, and ground reaction forces (GRF). Twelve recreational runners (8 males, 4 females) completed treadmill running trials at 16 km/h under nine shoe conditions that systematically varied in SH (25, 45, and 65 mm) and HW (81, 93, and 105 mm). Lower-extremity kinematics were collected using a Theia3D markerless motion capture system, and GRF data were recorded using an instrumented treadmill. A two-way repeated-measures ANOVA …

Influence Of Footwear Geometry On Lower Limb Stiffness During Running, Hongjiao Duan

College of Graduate Studies: Theses & Dissertations

This study examined how footwear geometry, specifically stack height and heel width, influences lower-limb stiffness during treadmill running. Twelve recreationally active runners completed treadmill running trials at 4.44 m/s in nine prototype shoe conditions that differed in stack height (25, 45, and 65 mm) and heel width (81, 93, and 105 mm). Vertical stiffness, leg stiffness, and sagittal-plane hip, knee, and ankle joint stiffness were calculated from synchronized markerless motion capture and force data. A two-way repeated-measures ANOVA (stack height X heel width) was used to test footwear effects. Leg stiffness was not significantly affected by stack height or heel …

Recruitment Strategies For Rural Black Students At Georgia Colleges And Universities: From An Admissions Counselor Perspective, Jayde B. Nelson

College of Graduate Studies: Theses & Dissertations

This dissertation explores the recruitment practices of admissions counselors at colleges and universities in the state of Georgia, with a focused lens on their efforts to engage and enroll Black students from rural high schools. The study investigates how geographic isolation, racial identity, and systemic inequalities converge to shape the college access landscape for underrepresented students in rural communities. Using a qualitative approach grounded in Culturally Responsive Leadership as the theoretical framework, this research examines the strategies, barriers, and institutional priorities that influence outreach efforts and recruitment outcomes. By analyzing admissions counselor perspectives and institutional approaches, the study found that …