Digital Commons Network^™

Resilience Attributes Of Certificated Flight Instructors, David Cross, Kristine Kiernan

Publications

The aviation industry has extensive vocabulary, data sources, and theoretical models to investigate human errors. However, the industry does not have commensurate ways to think about and analyze human success. Learning from successful routine operations is challenging because the corresponding common language and data streams are less robust. This paper explores the use of the critical incident debrief method to collect data on routine resilient performance among Certificated Flight Instructors (CFI). CFI thoughts and behaviors were coded in accordance with resilience theory. The critical incident debrief method is a valuable source of data for exploring resilient performance as it provides …

Assessing Unstabilized Approaches: A Phenomenology Study Of The Risk Perceptions And Decision-Making Thought Process Of General Aviation Pilots., Shlok Misra, Jorge L. D. Albelo Ph.D., Victor Fraticelli Rivera

Publications

The Federal Aviation Administration emphasized the need to focus on and develop human factors training as early as 1993 in official Human Factors Policy Order 9550.8. The purpose of this study was to conduct a detailed qualitative phenomenological analysis of the risk perceptions and decision-making model of collegiate aviation pilots for unstabilized approaches. The study focused on understanding how collegiate aviation pilots perceive unstable approaches, the risk associated with unstable approaches, and the factors that trigger pilots to execute a go-around. The International Air Transportation Association warns that continuing an unstabilized approach can lead to runway excursions, hard landings causing …

A Qualitative Single-Case Exploring The Impact Of A Mentor And Cohort On Students’ Academic And Career Decisions., Kevin Adkins, Samantha Bowyer, Jorge L. D. Albelo Ph.D.

Publications

Exposure to research is known to play a positive role in undergraduate education. However, robust research responsibilities are oftentimes not formally incorporated into a student’s academic experience until master level studies. Further, a variety of intimidation factors often inhibit many undergraduate students from participating on a research team. In this case study, the research team evaluated a unique group of undergraduate researchers who matriculated to the same university after beginning to participate in research as concurrently enrolled students. Following matriculation, each student continued to participate in research throughout the entirety of their undergraduate studies. All of the study’s students were …

Demographics, Workforce, And Housing Review Of North Omaha, Josie Gatti Schafer, Tara Grell

Publications

Data was compiled and analyzed by the University of Nebraska at Omaha Center for Public Affairs Research, a partner with the U.S. Census Bureau’s State Data Center program. The mission of the Center for Public Affairs Research is to collaboratively produce and disseminate high quality public scholarship on topics that impact the lives of Nebraskans. This brief provides data on demographics, the workforce, and housing in North Omaha. The majority of the data presented comes from the American Community Survey by the U.S. Census Bureau for the year 2020. Other data sources and years used in the analyses are notated. …

Nebraska’S Women In Stem | Listen Then Act, Josie Gatti Schafer, Morgan Vogel, Tara Grell, Amanda Parker, Barbara Gomez-Aguinaga, Shawn Maxwelll, Yeonkyung Kim

Publications

A large and vibrant science, technology, engineering, and math (STEM) workforce has a range of benefits for the economic and social well-being of communities; yet, women continue to be underrepresented in these occupations. Nationally, in 2017, women accounted for over half of the college-educated workforce but made up only 29% of those employed in science and engineering occupations, while being overrepresented in STEMrelated fields like healthcare. Nebraska’s STEM workforce is reflective of national trends. In 2019, about 27% of Nebraska women 25 years or older worked in a core STEM occupation, which we can estimate to be about 15,300 women …

Designing With And For Youth: A Participatory Design Research Approach For Critical Machine Learning Education, Golnaz Arastoopour Irgens, Ibrahim Adisa, Cinamon Bailey, Hazel Vega Quesada

Publications

As big data algorithm usage becomes more ubiquitous, it will become critical for all young people, particularly those from historically marginalized populations, to have a deep understanding of data science that empowers them to enact change in their local communities and globally. In this study, we explore the concept of critical machine learning: integrating machine learning knowledge content with social, ethical, and political effects of algorithms. We modified an intergenerational participatory design approach known as cooperative inquiry to co-design a critical machine learning educational program with and for youth ages 9 - 13 in two after-school centers in the southern …

Clemson University’S Teacher Learning Progression Program: Personalized Advanced Credentials For Teachers, Luke J. Rapa, Jeff C. Marshall, Stephanie M. Madison, Christopher Flathmann, Bart Knijnenburg, Nathan J. Mcneese

Publications

This chapter provides an overview of Clemson University's Teacher Learning Progression program, which offers participating middle school science, technology, engineering, and/or mathematics (STEM) teachers with personalized advanced credentials. In contrast to typical professional development (PD) approaches, this program identifies individualized pathways for PD based on teachers' unique interests and needs and offers PD options through the use of a “recommender system”—a system providing context-specific recommendations to guide teachers toward the identification of preferred PD pathways and content. In this chapter, the authors introduce the program and highlight (1) the data collection and instrumentation needed to make personalized PD recommendations, (2) …

Pediatric Cardiac Devices: Recent Progress And Remaining Problems, Kyle Crawford, Martine Leberge, Dan Simionescu, Naren Vyavahare

Publications

Pediatric cardiology is a field that largely relies on translation of innovation in its adult counterpart in order to improve patient outcomes and introduce new technology to the field. Few FDA-approved pediatric cardiac devices are available for clinical use, thus leading to widespread off-label use within the field. Nonetheless, adaption of devices and technology from the adult field has proven to improve patient outcomes and overall wellness. However, the diversity of congenital heart disease, in terms of basic anatomy and treatment response, continues to complicate results. The combination of diversity of anatomy and small population size make it difficult for …

Advanced Anti-Buckling Device Coupled With Real-Time Digital Image Correlation For Complex Cyclic Tension-Compression Testing Of Lightweight Materials, Akshat Agha, Fadi Abu-Farha

Publications

In sheet metal forming and stamping operations, modeling the behavior of sheet metal alloys for springback prediction is known to be very challenging, not only because of the complex models needed to account for kinematic hardening (such as the Yoshida-Uemori Model) but more importantly because of the experimental limitations of our ability to perform the complex tests needed to calibrate such models. For instance, reliable monotonic uniaxial compression tests and then cyclic tension-followed-by-compression tests are essential for characterizing the response of the material under those loading conditions, providing quantitative evaluation of the Bauschinger Effect and tension/compression asymmetry in the material, …

The Pauline Tradition, Benjamin L. White

Publications

No abstract provided.

Tunable Blood Shunt For Neonates With Complex Congenital Heart Defects, Ellen Garver, Christopher B. Rodell, Kristen Shema, Krianthan Govender, Samantha E. Cassel, Bryan Ferrick, Gabriella Kupsho, Ethan Kung, Kara L. Spiller, Randy Stevens, Amy L. Throckmorton

Publications

Despite advancements in procedures and patient care, mortality rates for neonatal recipients of the Norwood procedure, a palliation for single ventricle congenital malformations, remain high due to the use of a fixed-diameter blood shunt. In this study, a new geometrically tunable blood shunt was investigated to address limitations of the current treatment paradigm (e.g., Modified Blalock-Taussig Shunt) by allowing for controlled modulation of blood flow through the shunt to accommodate physiological changes due to the patient’s growth. First, mathematical and computational cardiovascular models were established to investigate the hemodynamic requirements of growing neonatal patients with shunts and to inform design …

The Extended Effect Of Top-Dressed Recovered Struvite Fertiliser On Residual Irish Grassland Soil Phosphorus Levels Compared To Commercial Phosphorus Fertiliser, Ciarán O’Donnell, Denise Barnett, Joe Harrington, Niamh Power

Publications

Phosphorus (P) is an essential growth-limiting nutrient that cannot be synthetically produced. Mineral P fertilisers are typically applied to crops to sustain modern farming practice and food production. These fertilisers are generally derived from finite phosphate ore, for which there is much concern over long-term sustainability. To address these concerns, various technologies have been developed to recover P from municipal wastewater treatment plants. One product recovered from these processes is struvite, which is a precipitate formed of magnesium, ammonium, and phosphate. To analyse the fertilisation value of the recovered struvite, field trials were conducted on perennial ryegrass (Lolium perenne) over …

Adapting Colorado River Basin Depletions To Available Water To Live Within Our Means, Jian Wang, David E. Rosenberg

Publications

The Colorado River’s two largest reservoirs are drawing down because releases exceed inflows and releases adapt to reservoir elevations instead of elevation and inflow triggers. To help slow reservoir drawdown and sustain target elevations, we introduced a new rule that adapted basin depletions to available water. We simulated inflow-based operations and validated existing operations in a new open-source exploratory model for the Colorado River Basin. We developed the exploratory model to more easily adapt Upper and Lower Basin depletions to available water, reduce run time, and lower costs to use compared to the proprietary RiverWare Colorado River Simulation System (CRSS) …

Modeling Crash Severity And Collision Types Using Machine Learning, Amit Kumar, Hari Krishnan Melempat Kalapurayil

Publications

Traffic safety analysis is the fundamental step for reducing economic, social, and environmental cost incurred due to traffic accidents. The essence of traffic safety is understanding the factors affecting crash occurrence, injury severity and collision type and their underlying relationships and predict-prevent future crash instances. Crash injury severity studies in past have utilized numerous statistical, econometric and Machine Learning (ML) and Artificial Intelligence (AI) tools to extract the underlying relationship between the crash causal factors and the consequent severity or collision type. The study aims to explore the Multi-Label Classification (MLC) tool from the domain of Artificial Intelligence (AI) for …

Instructional Efficiency In Asynchronous Online Discussions, Emily Faulconer, Darryl Chamberlain, Beverly Wood

Publications

Cognitive load mitigation strategies & community of inquiry framework are not discipline specific.

Demographics, Workforce And Housing Review Of South Omaha, Josie Gatti Schafer, Tara Grell

Publications

Data was compiled and analyzed by the University of Nebraska at Omaha Center for Public Affairs Research, a partner with the U.S. Census Bureau’s State Data Center program. The mission of the Center for Public Affairs Research is to collaboratively produce and disseminate high quality public scholarship on topics that impact the lives of Nebraskans. This brief provides data on demographics, the workforce, and housing in South Omaha. The majority of the data presented comes from the American Community Survey by the U.S. Census Bureau for the year 2020. Other data sources and years used in the analyses are notated. …

Peer Learning In Introductory Engineering, Kimberly Luthi, Mohua Kar, Lisa Macon

Publications

Observed characteristics of non-traditional student populations: low retention, low grades, low participation, low confidence in mathematical and problem-solving abilities. Research question: Does participation in peer-led team-learning (PLTL) activities support underrepresented and female students’ performance in introductory engineering courses and retention in engineering pathways?

Institutional Choice For Software Safety Standards, Bryan H. Choi

Publications

The pursuit of software safety standards has stalled. In response, commentators and policymakers have looked increasingly to federal agencies to deliver new hope. Some place their faith in existing agencies while others propose a new super agency to oversee software-specific issues. This turn reflects both optimism in the agency model as well as pessimism in other institutions such as the judiciary or private markets.

This Essay argues that the agency model is not a silver bullet. Applying a comparative institutional choice lens, this Essay explains that the characteristic strengths of the agency model—expertise, uniformity, and efficiency—offer less advantage than one …

Assessment Of Scientific Payload Carrying Spirulina Onboard Blue Origin’S New Shepard Vehicle, Pedro J. Llanos, Morgan Shilling, Kristina Andrijauskaite, Kody Kidder, Vijay V. Duraisamy

Publications

The research team at ERAU and UTHSCSA analyzed the effects of suborbital flight stressors and various light conditions (red, white, no light) on the Arthrospira platensis (Spirulina), onboard Blue Origin’s New Shepard vehicle. Commercially available cyanobacterium species were cultivated and closely monitored in mother colonies several months before the suborbital flight mission. The aim of this study was to estimate the biomass production and growth as a potential dietary alternative for prospective human spaceflight's life support system. Spirulina samples were flown in a NanoLab with adjacent avionics supporting the light conditions and sensors to monitor the temperature, relative humidity, and …

Automated Detection Of Vaping-Related Tweets On Twitter During The 2019 Evali Outbreak Using Machine Learning Classification, Yang Ren, Dezhi Wu, Avineet Singh, Erin Kasson, Ming Huang, Patricia Cavazos-Rehg

Publications

There are increasingly strict regulations surrounding the purchase and use of combustible tobacco products (i.e., cigarettes); simultaneously, the use of other tobacco products, including e-cigarettes (i.e., vaping products), has dramatically increased. However, public attitudes toward vaping vary widely, and the health effects of vaping are still largely unknown. As a popular social media, Twitter contains rich information shared by users about their behaviors and experiences, including opinions on vaping. It is very challenging to identify vaping-related tweets to source useful information manually. In the current study, we proposed to develop a detection model to accurately identify vaping-related tweets using machine …

Consent To Research In Madagascar: Challenges, Strategies, And Priorities For Future Research A Scoping Review Of Interprofessional, Elysée Nouvet, Simon Grandjean Lapierre, Astrid Knoblauch, Laurence Baril, Andry Andriamiadanarivo, Mihaja Raberahona, Chiarella Mattern, Lorie Donelle Phd, Rn, Fcan, Faan, Jean Rubis Andriantsoa

Publications

The ethical conduct of research in any setting hinges on the voluntary and informed consent of research participants. Working towards consent that is truly voluntary and informed, however, is far from straightforward, and requires attention to contextual factors that may complicate achievement of this ideal in specific research settings. This paper is based on Madagascar’s first “Consent complexities in health research in Madagascar” workshop, held in Antananarivo, Madagascar, in October 2018. It identifies a number of challenges encountered by individuals responsible for the conduct or oversight of health research in Madagascar related to informed and voluntary consent. Key challenges identified …

What Are The Desired Properties Of Recycling-Derived Fertilisers From An End-User Perspective?, Aoife Egan, Amrita Saju, Ivona Sigurnjak, Erik Meers, Niamh Power

Publications

The circular economy aims to promote the use of recycled products and to close the nutrient cycle loop by avoiding nutrient leakage and detrimental environmental effects, while also reducing the dependency on fossil fuels. The production of nitrogen is energy-intensive, requiring natural gas, whereas, finite resources like phosphorus and potassium are mined. Recent developments in nutrient recovery technologies have resulted in different types of recycling-derived fertilisers (RDFs) with the potential to substitute commonly used synthetic mineral fertilisers. This study aims to understand perceptions and preferences regarding the properties and parameters that end-users find important in RDFs. A better understanding of …

Investigating The Performance Of Green Roof For Effective Runoff Reduction Corresponding To Different Weather Patterns: A Case Study In Dublin, Ireland, Arunima Sarkar Basu, Bidroha Basu, Francesco Pilla, Srikanta Sannigrahi

Publications

This article aims to analyse the performance of green roof in runoff reduction. A case study has been conducted through a deployed green roof at the custom house quay building in Dublin, Ireland. Modular green roofs have been deployed which have IoT scales associated to it for measuring the effective reduction in runoff. Hydro-meteorological variables such as rainfall, temperature, relative humidity and wind speed values were corresponded to the amount of runoff reduction by means of a regression-based relationship. Comparison of the observed runoff reduction from a modular green roof and that estimated based on the developed regression relationship yielded …

Assessment Of Climate Change Impact On The Annual Maximum Flood In An Urban River In Dublin, Ireland, Arunima Sarkar Basu, Laurence William Gill, Francesco Pilla, Bidroha Basu

Publications

Hydrological modelling to address the problem of flood risk corresponding to climate change can play an important role in water resources management. This paper describes the potential impact of climate change on an urban river catchment using a physically based hydrological model called Soil Water Assessment Tool (SWAT). The study area considered is the Dodder River basin located in the southern part of Dublin, the capital city of Ireland. Climate projections from three regional climate models and two representative concentration pathways (RPC 4.5 and RCP 8.5) were used to evaluate the impact of flooding corresponding to different climate change scenarios. …

Assessment Of Variations In Runoff Due To Landcover Changes Using The Swat Model In An Urban River In Dublin, Ireland, Arunima Sarkar Basu, Laurence William Gill, Francesco Pilla, Bidroha Basu

Publications

Investigating the impact of land cover change in hydrological modelling is essential for water resources management. This paper investigates the importance of landcover change in the development of a physically-based hydrological model called SWAT. The study area considered is the Dodder River basin located in southern Dublin, Ireland. Runoff at the basin outlet was simulated using SWAT for 1993–2019 using five landcover maps obtained for 1990, 2000, 2006, 2012 and 2018. Results indicate that, in general, the SWAT model-simulated runoff for a chosen time-period are closer to the real-world observations when the landcover data used for simulation was collated as …

A Downscaled Economic Model Validated And Applied To Sediment Management Projects In Ireland And Scotland, Joe Harrington, R O'Sullivan, A Hamilton, Requested Lord, K Torrance, A Wijdeveld, T Debuigne, E Masson, B Batel

Publications

Purpose

This paper presents a regionally downscaled economic model developed to assess the impacts of the management of dredged sediments on Gross Domestic Product (GDP) and jobs created; the model is validated and applied using real project data from sediment management projects in Ireland and Scotland. The model provides significant insight into and allows impact analysis for the economic aspect of sediment management projects with the potential to facilitate and inform stakeholders across the sediment management sector.

Methods

The economic model facilitates regional analysis of the impacts of sediment management projects on GDP and job creation for direct, indirect and …

On-Site Analyses As A Decision Support Tool For Dredging And Sustainable Sediment Management, Bruno Lemière, Valérie Laperche, Arjan Wijdeveld, Marco Wensveen, Richard Lord, Alasdair Hamilton, Laurence Haouche, Mathieu Henry, Joe Harrington, Branislav Batel, Pascal Lehette

Publications

Beneficial use of dredged sediments, either in harbours or waterways, is based on their potential as alternative resources. Such sediments can be considered as bulk materials for industrial needs, which is predicated on their current waste status or meeting end-of-waste constraints. They also can be an integral part of beneficial use projects using sediments as a bulk component, including civil engineering and landscaping. This is particularly important for beneficial use projects focusing on climate change effects mitigation, such as flood protection works, coastline defence or littoral urban areas redevelopment. When dredged sediment is used as a bulk material, its acceptability …

Criminal Law Exceptionalism, Benjamin Levin

Publications

For over half a century, U.S. prison populations have ballooned and criminal codes have expanded. In recent years, a growing awareness of mass incarceration and the harms of criminal law across lines of race and class has led to a backlash of anti-carceral commentary and social movement energy. Academics and activists have adopted a critical posture, offering not only small-bore reforms, but full-fledged arguments for the abolition of prisons, police, and criminal legal institutions. Where criminal law was once embraced by commentators as a catchall solution to social problems, increasingly it is being rejected, or at least questioned. Instead of …

With Great (Computing) Power Comes Great (Human Rights) Responsibility: Cloud Computing And Human Rights, Vivek Krishnamurthy

Publications

Cloud computing underlies many of the most powerful and controversial technologies of our day - from large-scale data processing to face recognition systems - yet the human rights impacts of cloud computing have received little scrutiny. This article explains what cloud computing is, how it works, and what some of its most significant human rights impacts are through three case studies. It offers some initial thoughts on the human rights responsibilities of cloud computing providers under the United Nations Guiding Principles on Business and Human Rights and concludes by suggesting directions for future research.

Reserve System Design For Allocation Of Scarce Medical Resources In A Pandemic: Some Perspectives From The Field, Govind Persad, Govind C. Persad, Tayfun Sönmez, M. Utku Unver

Publications

No abstract provided.