Digital Commons Network^™

First-Generation College Students Identifying As Future Engineers, Dina Verdín, Allison Godwin

School of Engineering Education Graduate Student Series

This paper seeks to understand factors that influence how first-generation college students identify as engineers now and in the future. Data used in this study came from four U.S. institutions obtaining a total first-generation college student sample of 596 participants. We used future possible selves as a lens to understand how first-generation college students’ current views of themselves as engineers shape their future identities as engineers. Two separate analyses were conducted. First, a multiple regression analysis was used to determine which career future satisfaction variables predicted first-generation college students current and future identification as engineers. Second, a hierarchical regression analysis …

Engineering Education Research, Michael C. Loui, Maura Borrego

School of Engineering Education Faculty Publications

This chapter describes several aspects of engineering education research with an emphasis on how they might relate to computing education research. We briefly summarize the history of engineering education as a scholarly field, and we describe the current structures that support engineering education research: academic departments, scholarly journals, annual conferences, and professional societies. We identify the theories that often inform engineering education research studies, including theories of cognition, motivation, and identity. We explain how quantitative, qualitative, and mixed methods have been used. We summarize the results of an illustrative selection of empirical studies across a broad range of topics, including …

Foreword To Special Issue On Human-Systems Research Across The U.S. Department Of Energy, Ronald Laurids Boring

Journal of Human Performance in Extreme Environments

No abstract provided.

Research And Efforts In The Human Dimension: A Special Issue On Human-Systems Research In The U.S. Department Of Energy, Phil C. Bennett, Mika Armenta

Journal of Human Performance in Extreme Environments

No abstract provided.

Predicting Urban Reservoir Levels Using Statistical Learning Techniques, Renee Obringer, Roshanak Nateghi

School of Industrial Engineering Faculty Publications

Urban water supplies are critical to the growth of the city and the wellbeing of its citizens. However, these supplies can be vulnerable to hydrological extremes, such as droughts and floods, especially if they are the main source of water for the city. Maintaining these supplies and preparing for future conditions is a crucial task for water managers, but predicting hydrological extremes is a challenge. This study tested the abilities of eight statistical learning techniques to predict reservoir levels, given the current hydroclimatic conditions, and provide inferences on the key predictors of reservoir levels. The results showed that random forest, …

Hdarray: Parallel Array Interface For Distributed Heterogeneous Devices, Hyun Dok Cho, Okwan Kwon, Samuel Midkiff

Department of Electrical and Computer Engineering Technical Reports

Heterogeneous clusters with nodes containing one or more accelerators, such as GPUs, have become common. While MPI provides a mechanism and management of interaddress space communication, and OpenCL provides a way to manage computation and communication within a process with access to heterogeneous computational resources, programmers are forced to write hybrid programs that manage the interaction of both of these systems. This paper describes an array programming interface that provides users with automatic or manual distributions of data and work. Using the distribution and information about what data is used and defined by kernels, communication among processes and among devices …

Improving Intercultural Skills: Developing Communicative Flexibility And Tolerance Of Ambiguity In The Writing Center, Vicki Kennell

Purdue Writing Lab/Purdue OWL Presentations

This presentation shares early results of an IRB-approved, cross-institutional study of the developing intercultural skills of writing center tutors and provides guidance on thinking about the implications of such data for a tutor training context. Intercultural communication involves skills such as communication flexibility, tolerance of ambiguity, and empathy. Initial data showed that many tutors need to develop these skills, that tutoring experience alone is likely insufficient for improvement, and that experience may actually decrease communication flexibility by solidifying tutors into a particular role rather than expanding their ability to flexibly apply strategies.

Preparation And Characterization Of Multimodal Hybrid Organic And Inorganic Nanocrystals Of Camptothecin And Gold, Christin P. Hollis, Alan K. Dozier, Barbara L. Knutson, Tonglei Li

Department of Industrial and Physical Pharmacy Faculty Publications

We demonstrate a novel inorganic-organic crystalline nanoconstruct, where gold atoms were imbedded in the crystal lattices as defects of camptothecin nanocrystals, suggesting its potential use as simultaneous agents for cancer therapy and bioimaging. The incorporation of gold, a potential computed tomography (CT) contrast agent, in the nanocrystals of camptothecin was detected by transmission electron microscope (TEM) and further quantified by energy dispersive X-ray spectrometry (EDS) and inductively coupled plasma-optical emission spectrometers (ICP-OES). Due to gold's high attenuation coefficient, only a relatively small amount needs to be present in order to create a good noise-to-contrast ratio in CT imaging. The imbedded …

Enhanced, Risk-Based Faa Oversight On Part 145 Maintenance Practices: A Qualitative Study, Bryan G. Sheehan, Timm J. Bliss, Chad L. Depperschmidt

Journal of Aviation Technology and Engineering

The purpose of this qualitative study was to examine the phenomenon of enhanced, risk-based Federal Aviation Administration (FAA) oversight of Part 145 repair stations in Oklahoma that performed aircraft maintenance for Part 121 air carriers. Specifically, this research was utilized to explore the lived (personal) experiences of Part 145 repair station managers concerning operational changes in air carrier maintenance practices. The researchers’ intent was not to examine the effectiveness of changes implemented by the FAA; instead, to explore how management has experienced the enhanced changes in their Oklahoma-based Part 145 repair stations. Forty-two percent of the participants indicated a weak …

Efficiency Driver In Nigerian Airports: A Bootstrap Dea–Censored Quantile Regression Approach, Obioma Reuben Nwaogbe, Peter Wanke, Innocent Chukwuka Ogwude, Carlos Pestana Barros, Abul Kalam Azad

Journal of Aviation Technology and Engineering

This paper reports on the use of a novel two-stage approach for assessing the efficiency of 30 major Nigerian airports from 2003 to 2013 based on bootstrapped data envelopment analysis (DEA) and censored quantile regression. In the first stage, bootstrapped efficiency estimates are computed. They enable bias correction and testing for significant differences in efficiency levels among airports. Subsequently, bootstrapped DEA results are combined with censored quantile regression to assess the impact of contextual variables—related to the airports’ ownership, location, and network connectivity—on different efficiency percentiles. The results reveal that the intensity of significant impacts regarding airports’ contextual variables may …

Synthesis And Characterization Of Polymer-Silica Composite Hydrogel Particles And Influence Of Hydrogel Composition On Cement Paste Microstructure, Matthew J. Krafcik, B Bose, Kendra Erk

School of Materials Engineering Faculty Publications

The objective of this research is to define the fundamental structure-property relationships of water-swollen polymer hydrogel particles that are employed as internal curing agents in cementitious mixtures, in addition to reporting a novel synthesis procedure for combining pozzolanic materials with hydrogel particles. Solution polymerization was performed to incorporate amorphous nanosilica particles within acrylic-based polymer hydrogel particles of varying chemical compositions (i.e., monomer ratio of acrylic acid (AA) to acrylamide (AM)). Experiments were designed to measure the absorption capacity and kinetics of hydrogel particles immersed in pure water and cementitious pore solution, as well as determine the impact of particles on …

In Vitro Exploration Of Acat Contributions To Lipid Droplet Formation During Adipogenesis, Yuyan Zhu, Chih-Yu Chen, Junjie Li, Jin-Xing Cheng, Miran Jang, Kee Hong Kim

Department of Food Science Faculty Publications

As adipose tissue is the major cholesterol storage organ and most of the intracellular cholesterol is distributed to lipid droplets (LDs), cholesterol homeostasis may have a role in the regulation of adipocyte size and function. ACATs catalyze the formation of cholesteryl ester (CE) from free cholesterol to modulate the cholesterol balance. Despite the well-documented role of ACATs in hypercholesterolemia, their role in LD development during adipogenesis remains elusive. Here, we identify ACATs as regulators of de novo lipogenesis and LD formation in murine 3T3-L1 adipocytes. Pharmacological inhibition of ACAT activity suppressed intracellular cholesterol and CE levels, and reduced expression of …

The Geopolitics Of Canadian Defense White Papers: Lofty Rhetoric And Limited Results, Bert Chapman

Libraries Faculty and Staff Scholarship and Research

As the United States northern neighbor, Canada serves as a NATO ally and a strategic partner with Washington through the North American Aerospace Defense Command (NORAD). Canadian forces have fought honorably and bravely in concert with American forces in many wars. Canada's government, however, has been less consistent in promoting a credible vision of Canadian national security policy and geopolitical interests in its defense white papers. These documents have often contained idealistic rhetoric about adhering to a rules-based international order and defending freedom. In reality, Canadian governments of varying political parties have consistently failed to provide the sustained funding and …

Of Levinas And Shakespeare: "To See Another Thus", Sandor Goodhart, Moshe Gold, Kent Lehnhof

Purdue University Press Book Previews

Scholars have used Levinas as a lens through which to view many authors and texts, fields of endeavor, and works of art. Yet no book-length work or dedicated volume has brought this thoughtful lens to bear in a sustained discussion of the works of Shakespeare. It should not surprise anyone that Levinas identified his own thinking as Shakespearean. "The play’s the thing" for both, or put differently, the observation of intersubjectivity is. What may surprise and indeed delight all learned readers is to consider what we might yet gain from considering each in light of the other.

Comprising leading scholars …

Editor's Introduction, Krista Glazewski

Interdisciplinary Journal of Problem-Based Learning

No abstract provided.

Engineering Women’S Attitudes And Goals In Choosing Disciplines With Above And Below Average Female Representation, Dina Verdín, Allison Godwin, Adam Kirn, Lisa Benson, Geoff Potvin

School of Engineering Education Graduate Student Series

Women’s participation in engineering remains well below that of men at all degree levels. However, despite the low enrollment of women in engineering as a whole, some engineering disciplines report above average female enrollment. We used multiple linear regression to examine the attitudes, beliefs, career outcome expectations, and career choice of first-year female engineering students enrolled in below average, average, and above average female representation disciplines in engineering. Our work begins to understand how the socially constructed masculine cultural norms of engineering may attract women differentially into specific engineering disciplines. This study used future time perspective, psychological personality traits, grit, …

Best Practices In Engaging Online Learners Through Active And Experiential Learning Strategies, Gamze Ozogul

Interdisciplinary Journal of Problem-Based Learning

No abstract provided.

Use Of Excel Spreadsheet Calculators In Handling Data Generated From Uv- Spectrometer, Mercy Okezue, Kari Clase, Steve Byrn

BIRS Symposium

To ease the complexities of handling data generated from different analytical procedures, validated excel spreadsheet containing relevant formulas are developed to ensure the process of data handling will consistently produce the expected results. This paper introduces the use of Excel spreadsheets in handling data generated from using a UV-Spectrometer in determination of analyte concentration in various dosage forms

Instituting Process Control Mechanisms In A Quality Control Analytical Chemistry Laboratory, Mercy Okezue, Kari Lynn Clase, Stephen Byrn

BIRS Symposium

Statistical Process Control by means of using control charts was a means of monitoring performance of analytical equipment. Quality control checks on test items using these equipment generated data used for plotting X-bar charts. The charts generated had warning and control limits which helped monitor system performance

Deciding Where To Publish Or Present Your Work, Dave Zwicky, Margaret L. Phillips

Libraries Faculty and Staff Creative Materials

Are you having trouble choosing the best place to publish or present your work? Which publications have the biggest impact? This workshop will provide a general overview of factors to consider when choosing venues to publish and present. We will include a discussion of available tools and resources you can use to gather information and make informed decisions.

Examining The Relationship Between Safety Management System Implementation And Safety Culture In Collegiate Flight Schools, Michael F. Robertson

Journal of Aviation Technology and Engineering

Safety management systems (SMS) are becoming the industry standard for safety management throughout the aviation industry. As the Federal Aviation Administration continues to mandate SMS for different segments, the assessment of an organization’s safety culture becomes more important. An SMS can facilitate the development of a strong aviation safety culture. This study describes how safety culture and SMS are integrated.

The purpose of this study was to examine the relationship between an organization’s safety culture and SMS implementation in collegiate flight schools. The research study was designed to determine (a) the relationship between SMS implementation and safety culture, (b) the …

Using Portable Traffic Signals To Solve Common Work Zone Dilemmas, Kirk Thrasher

Purdue Road School

Recent technological advancements now allow portable traffic signals to solve a myriad of long-standing work zone dilemmas. How do you efficiently manage residential driveways within a work zone? What is the best method for communicating signal information to the motorist? What happens if a vehicle needs more time to clear the work area? This presentation focuses on how portable traffic signals are being used in these situations and more.

Ind Taxiway H Rehabilitation, Melanie Reddick, Sean Smith, Matt Lewis

Purdue Road School

In this session we present the Indianapolis International Airport Taxiway H rehabilitation project. We will review pavement restoration construction, lighting, standard adjustments to connecting taxiways, and operational considerations for construction.

Helipad Design And Best Practices, Andrew Swanson

Purdue Road School

Heated Permeable Concrete Helipads for Safety and Surety - The latest in helipad construction technologies has combined with aeronautical consultant-guided design to create helipads that are safe and environmentally friendly and that meet the guidelines of the FAA, state, local agencies, and first responders. Join us to learn about heated permeable concrete helipads, which offer safety to flight crew, patient, and helicopter by eliminating ice and snow on the pad and pathways.

High-Efficiency Control Systems For Connected Class 8 Trucks, Alexander Taylor, Cody M. Allen, Greg Shaver

Purdue Road School

The Department of Energy–sponsored project Next-Generation Energy Technologies for Connected and Automated On-Road Vehicles (NEXTCAR) aims to develop technologies that utilize emerging connectivity infrastructure. A Purdue University–led team of industry leaders, along with the National Renewable Energy Laboratory, is focusing on technologies that benefit line-haul Class 8 trucks, with an emphasis on platooning vehicles. The goal is an integrated, connectivity-enabled vehicle and powertrain control system for diesel-powered on-highway trucks. Join us for a discussion.

Impact Of Subgrade Strength On Hma Section Thickness, William Vavrik

Purdue Road School

Flexible pavements are built from the soil up, and the quality and characteristics of each layer have a significant impact on performance. Soft soils and thin base layers can require thicker asphalt. Properly preparing and constructing asphalt bases can be a cost-effective way to achieve a perpetual pavement. In this session we will explore the impact of subgrade and base layers and how you can optimize pavement design for maximum performance.

Designing Safer Work Zones, Bob Tally, Calvin Lee

Purdue Road School

This presentation will take you through the yearlong joint cooperative process between industry and state government that is making our work zones safer. Projects are being designed and executed in a safer manner as all concerned are taking a proactive approach to address the spike in incidents and fatalities in our work zones. The results and ongoing efforts of this large-scale, multi-jurisdictional effort will be addressed.

Designing For Safer Work Zones, Calvin Lee

Purdue Road School

This presentation will take you through the yearlong joint cooperative process between industry and state government that is making our work zones safer. Projects are being designed and executed in a safer manner as all concerned are taking a proactive approach to address the spike in incidents and fatalities in our work zones. The results and ongoing efforts of this large-scale, multi-jurisdictional effort will be addressed.

Rehabilitation Of Central Avenue Historic Stone Arch, Katlyn Shergalis

Purdue Road School

Indianapolis’s Central Avenue Historic Arch over Fall Creek was in immediate need of rehabilitation. Due to the historic nature of the structure, coordination was required with all of the state agencies to resolve issues and conflicts while maintaining the original integrity. We will share lessons learned as they relate to the complexity of the design with regard to the historic arch, the mapping of stones, and the plan details required to identify all features.

Acrp 01-32 Updating Report 16: Guidebook For Managing Small Airports, Susan Zellers

Purdue Road School

ACRP Project 01-32, Updating Report 16 Guidebook for Managing Small Airports, will provide a guidebook and electronic resource library for small airport managers to assist in addressing their multiple responsibilities and challenges, including operations, planning, development, and airport revenue growth. Publication is anticipated in the first half of 2018. This presentation provides an advanced introduction to the resources produced by the project for airport managers and their consultants.