Digital Commons Network^™

Visual Programming Language (Vpl) For Generative Architecture Design: A Literature Review, Cansu Coskun, Tianru Zhao, Jingyi Lai, Meta Soy, Clark Cory

CIB Conferences

Advancements in the construction sector have revolutionized design and project management processes with the contribution of cutting-edge technologies. Generative design is a transformative design process that uses algorithms and computational tools to automatically explore and generate multiple design options. By defining specific constraints, goals, and input parameters, the process would be able to create, analyze, and optimize the designs to meet alternative requirement. The Visual Programming Language (VPL) and Textual Programming Language (TPL) are two dominant approaches in the field of generative design. However, the use of TPL require users to understand coding process with one or more programming languages, …

The Best Value Approach 4.0 - Advanced Air Mobility Case Study, Jacob Kashiwagi, Joseph Kashiwagi, Alfredo Rivera

CIB Conferences

The Best Value Approach (BVA) has been researched and developed for 25 years in the procurement and project management sectors. It has documented test projects showing a high level of performance for organizations. Although the approach has been successful, changes in technology continue to alter the landscape of the procurement industry. BVA 4.0 was created to adapt the approach to meet current industry demands. In this paper, the researcher wanted to better understand the impact of the changes of BVA 4.0 and better understand its implications. BVA 4.0 was tested ith an organization to determine whether it is an improvement …

Construction Company Insolvencies: State-Of-The-Art Review, Dennis Jayan, Niluka Domingo Dr, Ravindu Kahandawa, Suzanne Wilkinson, Priya Vishnu, Inoka Withana Gamage

CIB Conferences

The surging tendency of insolvencies has emerged as a contemporary issue in the global construction industry. Moreover, these insolvencies have led to project failures, financial losses, and reputational damage within the construction industry. Despite the severity of the issue, there is a lack of research dedicated to introducing practical solutions to mitigate insolvencies. Accordingly, this research aims to pioneer a research direction to find practical and real-world methods to reduce insolvencies. To achieve this, the research combined a bibliometric analysis with a systematic literature review to map current research trends and systematically categorize insolvency factors into themes. Findings reveal that …

Developing A Conceptual Model To Predict Disputes In Construction Projects Using Artificial Intelligence Technologies, Mathusha Francis, Srinath Perera, Wei Zhou, Samudaya Nanayakkara

CIB Conferences

The construction industry is a complex and competitive environment and disputes become more prevalent. The construction disputes negatively effect the cost, time and quality of the project. Further, disputes could result in the abandonment of projects and even the financial collapse of construction companies. Many researchers have attempted to mitigate disputes by addressing the causes of disputes, dispute avoidance techniques, and resolution methods from different perspectives. However, recent literature has evidenced that disputes remain a persistent threat in construction projects. The construction industry is attempting to transform into a technology-driven industry through the adoption of innovative concepts and technologies. In …

Effects Of Shocks On The New Zealand Building Construction Sector: Evidence From Time Series Datasets, Diocel Harold M. Aquino, Mostafa Jelodar, Niluka Domingo Dr

CIB Conferences

The construction industry serves as a vital driver of economic growth and societal development, responding to both demographic pressures and evolving infrastructure needs. However, it is also highly sensitive to external shocks, including financial crises, natural disasters, and regulatory changes, all of which influence construction trends over time. By analyzing historical data, this study identifies key patterns of growth, contraction, and recovery across the past three decades. This paper examines the trends and dynamics of building construction activity in New Zealand from 1990 to the present, with a focus on the total construction value and a detailed breakdown of residential …

Preface: Cib World Building Congress 2025, Makarand Hastak, Zeljko Torbica, Bryan J. Hubbard, Deniz Besiktepe, Sogand Hasanzadeh, Kyubyung Kang

CIB Conferences

The CIB World Building Congress 2025, held at Purdue University and online from May 19–23, 2025, convened global experts to explore the theme “Sustainable Built Environment – The Role of the Construction Community in Meeting the UN SDGs.” The Congress featured 420 peer-reviewed papers presented across 126 sessions and organized by 41 CIB Working Commissions and Task Groups. This preface outlines the significance of the congress, its international scope, and its role in advancing research and practice in the built environment.

Expanding Access To Cybergis-Compute Through Support For Heterogeneous Workflows, Alexander C. Michels, Ian Zhang, Anand Padmanabhan, John Speaks, Rebecca Vandewalle, Shaowen Wang

I-GUIDE Forum

CyberGIS-Compute is a geospatial middleware tool designed to lower technical barriers to High-Performance Computing (HPC) resources. It provides end-users with a Graphical User Interface (GUI) for submitting models to HPC and allows model developers to contribute their workflows by adding a manifest to their repositories. However, the simplification of the user interface and streamlining of model contribution have unintentionally limited the scope of models that could be run on CyberGIS-Compute. In this paper, we discuss recent developments to the CyberGIS-Compute project that are aimed at supporting a wider variety of workflows including performance enhancements, supporting additional configuration options for jobs, …

Assessing Vulnerabilities Associated With High-Risk Dams In Utah, Courtney Flint Dr., Michael Englert, Upmanu Lall Dr.

I-GUIDE Forum

Across the United States, the age of dam infrastructure presents a substantial threat. The potential for structural failure associated with these aging dams is exacerbated by increased climate uncertainty and the threat of dam overtopping due to extreme and prolonged precipitation events. These compound threats place downstream areas at pronounced risk. These downstream areas vary widely. Some are relatively free of vulnerable elements, while others have a complex mix of infrastructure, populations, and ecologically important elements. This paper highlights the risk situation associated with aging dams and hydroclimatic extremes, the methodological and geospatial challenges and opportunities associated with mapping the …

Exploring Dynamic Human Mobility Of Diverse Social Groups Under Heat Conditions: A Simulation-Based Approach, Xin Gu, Su Yeon Han, Soe Win Myint, Eunsang Cho, Yuanhui Zhu, Joonseok Kim

I-GUIDE Forum

Extreme heat events, exacerbated by climate change, present significant risks to human health and disproportionately affect vulnerable populations. Traditional assessments of heat exposure often rely on static residential data, which fails to account for the dynamic human mobility pattern of the population in space and time. Recent work utilizes mobility data to explore exposure dynamics in heat-related studies. However, these studies are primarily focused on the general population or the differences in human mobility across varying income levels in response to heat exposure. Unlike previous studies, this research employs a Monte Carlo simulation that integrates mobility data with American Community …

History In Motion: Applying The Archival Collections Of Frank And Lillian Gilbreth’S Time And Motion Studies To Business Education, Annette Bochenek

Libraries Faculty and Staff Scholarship and Research

No abstract provided.

Comparative Analysis Of Loss Of Control Definitions, Owen D. Poborsky

Journal of Aviation Technology and Engineering

“Loss of control” (LOC) is a broad term in aviation used to describe an event or series of events that resulted in an accident or incident of an aircraft. Many definitions of LOC exist for aircraft while maneuvering on the ground and in the air. The purpose of this study is to synthesize the numerous LOC definitions found in the literature and from government and rulemaking organizations to better understand the importance of airspeed awareness as it relates to LOC events at low altitudes. Furthermore, emphasis shall be placed specifically on flight training within general aviation, as significant LOC statistical …

E-Taxi Technology: Assessing Operational Benefits And Sustainability In Modern Aviation, Arthur C. Dela Peña

Journal of Aviation Technology and Engineering

This study evaluates the operational benefits and sustainability impacts of electrically driven landing gear systems (e-taxi technology) in the aviation industry, focusing on the Philippine context. The objective was to assess improvements in fuel savings, emissions reductions, and maintenance costs associated with e-taxi systems. Using a mixed-methods approach, data were collected through interviews with airline operators, and secondary data were collected from industry reports. Results showed that e-taxi systems reduced taxiing time by 15–22%, fuel consumption by 150–180 kg per flight, and engine wear by 10–14%. Carbon emissions were reduced by 472–566 kg per flight, while noise levels decreased by …

Selective Anti-Tumor And Normal Tissue Sparing Effects Of Flash Radiotherapy In A Simple Algebraic Model Of Radiochemical Kinetics, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Working Papers

Background: This short paper presents the solution to an open problem in medical physics: how and when FLASH radiotherapy can have a selective anti-tumor effect. FLASH radiotherapy gives a single large dose of ionizing radiation to a cancer patient within a time span of a few milliseconds, unlike conventional radiotherapy which is divided into several dose fractions given weekly, each lasting about 10 minutes. In some animal models FLASH seems to improve tumor cell killing without damaging normal tissues. However, the mechanism of the selective anti-tumor effect remains elusive. Methods: To explore effects of tissue hypoxia in tumors, a model …

Synergizing Stem And Ela: Exploring How Small-Group Interactions Shape Design Decisions In An Engineering Design-Based Unit, Deana Lucas, Emily Haluschak, Christine H. Mcdonnell, Selcen Guzey, Greg J. Strimel, Morgan Hynes, Tamara J. Moore

School of Engineering Technology Faculty Publications

While small group learning through engineering design activities has been shown to enhance student achievement, motivation, and problem-solving skills, much of the existing research in this area focuses on undergraduate engineering education. Therefore, this study examines how small-group interactions influence design decisions within a sixth-grade engineering design-based English Language Arts unit for multilingual learners. Multilingual Learners make up 21% of the U.S. school-aged population and benefit from early STEM opportunities that shape future educational and career trajectories. Grounded in constructivist learning theories, the research explores collaborative learning in the engineering design process, using a comparative case study design. Specifically, this …

On Closed-Form Preintegration For A Class Of Mixed-Invariant Systems In Seₙ(3), Li-Yu Lin, Kartik A. Pant, Benjamin Perseghetti, James Goppert

School of Aeronautics and Astronautics Faculty Publications

A large class of nonlinear systems in engineering and robotics evolves on geometric manifolds, such as fixed-wing aircraft, quadrotors, etc., whose kinematic motion can be described using Lie groups, in particular SEn(3) . The existing techniques involve numerical integration methods such as Runge-Kutta integration to propagate their motion forward in time. However, these methods are approximate solutions and do not respect the geometric constraints of the nonlinear differential equation, leading to higher computational costs and numerical integration errors. To this end, we propose a geometric closed-form approach to solve the initial value problem for a class of nonlinear systems that …

From Context To Connection: Client Letters In Stem Integration Curricula, Christine Mcdonnell, Imani N. Adams, Morgan Hynes, Selcen Guzey, Mary K. Pillotte, Greg J. Strimel, Kristina M. Tank, Tamara J. Moore

School of Engineering Technology Faculty Publications

Real-world contexts play a crucial role in engaging students and promoting disciplinary synergy in integrated STEM education. One underexplored pedagogical tool for supporting such integration is the “client letter”—a narrative device used to frame engineering design challenges around authentic, real-world problems. This study investigates the role of client letters in synergizing knowledge within immersive engineering design-based STEM integration curricula. We conducted a qualitative document analysis of 107 client letters embedded in 18 freely available K-12 STEM integration curricular units. Using a theoretical framework that aligns immersive education principles with the STEM Integration Framework, we analyzed how these letters support curricular …

Safe Human–Robot Collaboration With Risk Tunable Control Barrier Functions, Vipul K. Sharma, Pokuang Zhou, Zhengtong Xu, Yu She, S. Sivaranjani

School of Industrial Engineering Faculty Publications

In this article, we consider the problem of guaranteeing safety constraint satisfaction in human–robot collaboration (HRC) with uncertain human position. We pose this problem as a chance-constrained problem with safety (chance) constraints represented by uncertain control barrier functions, where the probability of safety constraint satisfaction under uncertainty is bounded by a tunable user-defined risk. We solve this stochastic optimization problem using a sampling-based approach and obtain a risk-tunable controller to safely accomplish HRC tasks. We demonstrate the safety and performance of this approach through both simulation and hardware experiments on a 7 degree-of-freedom Franka–Panda manipulator and characterize the tradeoff between …

Agricultural Research Facilities And Equipment, Brad Joyce, Purdue University Office Of Research

University General Facility Boilerplate Descriptions

This overview document describes Purdue University’s on and off-campus research facilities and key equipment related to agriculture, air and water quality, agronomy, and environmental regulation.

A Survey On Identifying Deepfake Risks In Newspapers For Enhanced Cybersecurity Protection, Young B. Choi

KAUPA Letters

The increasing sophistication of deepfake technology poses significant challenges to cybersecurity, particularly in the realm of information dissemination. While deepfakes have historically been associated with social media and video platforms, their potential impact extends to traditional news outlets, such as newspapers. This brief survey paper explores the presence of deepfake flavors in newspaper articles and the potential cybersecurity implications they introduce. It also provides strategies for detection, mitigation, and protection, focusing on maintaining the integrity of media content and protecting against emerging cybersecurity threats.

Why English Matters: The Case For Majoring In It, John J. Han

KAUPA Letters

No abstract provided.

The Challenges Of Academic Publishing, Young B. Choi

KAUPA Letters

No abstract provided.

Words Of Wisdom, Semoon Chang

KAUPA Letters

No abstract provided.

Co-Creating Ai Learning Solutions: A Qualitative Analysis Of Student And Faculty Deliverables In An Algorithmic Literacy Learning Community, Samantha Legrand, Zoeanna Mayhook, Jing Lu

Libraries Faculty and Staff Scholarship and Research

This research describes the conceptual development and insights from implementation of Partners for Algorithmic Literacy (PAL) - a groundbreaking student-faculty learning community model, facilitated by academic librarians, where undergraduates and instructors partner to co-design curricular plans integrating or interrogating AI in the classroom. In the fall of 2023 and 2024, two cohorts in this learning community were partnered. In weekly sessions, partners experimented with AI tools and engaged PAL’s novel Algorithmic Literacy Pedagogy Framework to guide their conversations and co-design process.

Employing qualitative content analysis, an in-depth exploration is underway to glean valuable insights from the student-faculty partners’ personal reflections, …

Selected Artificial Intelligence Provisions In U.S. Fiscal Year 2025 National Defense Authorization Act, Bert Chapman

Libraries Faculty and Staff Presentations

The 2025 Fiscal Year National Defense Authorization Act contains multiple provisions relating to artificial intelligence (AI). These congressionally mandated provisions direct various sections of the Department of Defense (DOD) and individual U.S. armed service branches to execute congressional intent for AI policymaking. Examples of such intent include identifying and planning DOD's AI workforce, demonstrating AI biotechnology applications for national security, improving the human usability of AI systems, and establishing an AI security center. This presentation will note that reports on these initiatives must be prepared for relevant congressional oversight committees, and, in many cases, are in many cases, publicly released …

Bell Telephone System’S Preeminent Role In The Growth Of Industrial Design, Ralph O. Meyer, Russell A. Flinchum

Purdue University Press Books

Histories of design pay scant attention to the corded telephone, which played an immeasurable role in early communication. Although the Bell System, with many Nobel Prizes, is justly acknowledged for its technical prowess, it should also be recognized for its early and considerable impact on the developing discipline of industrial design. In 1930, young Henry Dreyfuss, who would later become known as a pioneer of industrial design, was retained by the Bell System as a design consultant and matured in that environment. With substantial input from Bell System engineers, Dreyfuss and his staff produced attractive telephone designs that were manufactured …

In-Hand Singulation, Scooping, And Cable Untangling With A 5-Dof Tactile-Reactive Gripper, Yuhao Zhou, Pokuang Zhou, Shaoxiong Wang, Yu She

School of Industrial Engineering Faculty Publications

Manipulation tasks often require a high degree of dexterity, typically necessitating grippers with multiple degrees of freedom (DOF). While a robotic hand equipped with multiple fingers can execute precise and intricate manipulation tasks, the inherent redundancy stemming from its high-DOF often adds complexity that may not be required. In this paper, we introduce the design of a tactile sensor-equipped gripper with two fingers and five-DOF. We present a novel design integrating a GelSight tactile sensor, enhancing sensing capabilities and enabling finer control during specific manipulation tasks. To evaluate the gripper's performance, we conduct experiments involving three challenging tasks: 1) retrieving, …

Using Speakers As Sensors: Detecting Acoustic Loads With Dense Neural Networks And Impedance Features, Max Chen, Keisuke Alexander Nakamura, Noori Kim

Purdue Polytechnic Graduate Student Poster Symposium

The use of speakers as sensors to detect ear canal conditions has been previously demonstrated using variable syringe lengths attached to earphones. Building on this foundation, our research explores the potential of a single speaker to function as both an actuator and sensor by leveraging electrical impedance measurements under varying acoustic loads, analyzed with Dense Neural Networks (DNN). Electrical impedance data, including magnitude and phase, were collected from four speakers across fourteen distinct acoustic load conditions, yielding a dataset of 5,600 samples. The raw data were processed through the DNN model, achieving an 87% accuracy in length prediction independent of …

The Role Of Oxygen During Thermal Runaway Of Lithium-Ion Batteries, Nicholas Baehl, Jason Ostanek

Purdue Polytechnic Graduate Student Poster Symposium

Energy storage has become an important technology due to the increasing utilization of renewable resources. Although LIB usage continues to rise, latent defects and abuse pose safety risks. Modeling and simulation tools are applied to simulate failure conditions such as thermal runaway. CFD tools may be used to simulate thermal runaway with consideration of important physics including: gas generation, venting, and combustion of evolved gases. Previous CFD-based studies have investigated thermal runaway and venting, but none have considered the instantaneous composition of gases which may lead to ignition within the cell body. This work explores the progression of thermal runaway …

Pulse Flow Reverse Osmosis With Feed Flow Reversal, Jarrod Robbins, John Murray, Jose M. Garcia-Bravo

Purdue Polytechnic Graduate Student Poster Symposium

The purpose of this study is to increase the efficiency and water recovery of household scale reverse osmosis systems. Due to the small membranes and simple design, current household RO systems send much of the feed water to the drainage system. This system will be capable of implementing Feed Flow reversal in order to increase the lifespan of the RO membrane as Pulse Flow RO may lead to uneven loading due to variances in salinity and increased pressure spikes.

Personalizing Engineering Education Through Environmental Backgrounds And Augmented Reality, Mohammed Metwaly, Farid Breidi

Purdue Polytechnic Graduate Student Poster Symposium

This study aims to design, develop, and evaluate a Personalized Engineering Playground (PEP) that connects students' environmental backgrounds with engineering applications. It investigates the impact of early outdoor experiences on students' motivation to pursue engineering careers. Utilizing a comprehensive survey of over 150 engineering technology students, the study collected both quantitative and qualitative data on nature-related activities, career influences, and environmental perceptions. The findings indicate that activities such as building (23%), exploring (17%), and observing nature (20%) play a significant role in shaping engineering interest. Approximately 45% of the students reported that outdoor experiences had a positive influence on their …