Digital Commons Network^™

Ignoring Spatial And Spatiotemporal Dependence In The Disturbances Can Make Black Swans Appear Grey, R. Kelley Pace, Raffaella Calabrese

Faculty Publications

Automated valuation models (AVMs) are widely used by financial institutions to estimate the property value for a residential mortgage. The distribution of pricing errors obtained from AVMs generally show fat tails (Pender 2016; Demiroglu and James Management Science, 64(4), 1747–1760 2018). The extreme events on the tails are usually known as “black swans” (Taleb 2010) in finance and their existence complicates financial risk management, assessment, and regulation. We show via theory, Monte Carlo experiments, and an empirical example that a direct relation exists between non-normality of the pricing errors and goodness-of-fit of the house pricing models. Specifically, we provide an …

The Role Of Motivation Into The Conceptual Model Of Motor Development In Childhood, Cristina Menescardi, An V. De Meester, Sofie Morbée, Leen Haerens, Isaac Estevan

Faculty Publications

The aim of this study was twofold: first, to investigate whether perceived motor competence (PMC) mediates the relation between actual motor competence (AMC) and physical activity (PA) according to the conceptual model of motor development, and second to examine the role of different motivational regulations (i.e., intrinsic, identified, introjected, and external regulation) in the relationship between PMC and PA. A sample of 504 Spanish students (46.2% girls, 8–12 years old) voluntarily participated in this study. In relation to the first aim, structural equation modeling revealed that PMC indeed mediates the association between AMC and PA. In relation to the second …

The Role Of Motivation In The Conceptual Model Of Motor Development In Childhood, Cristina Menescardi, An V. De Meester, Sofie Morbee, Leen Haerens, Isaac Estevan

Faculty Publications

The aim of this study was twofold: first, to investigate whether perceived motor competence (PMC) mediates the relation between actual motor competence (AMC) and physical activity (PA) according to the conceptual model of motor development, and second to examine the role of different motivational regulations (i.e., intrinsic, identified, introjected, and external regulation) in the relationship between PMC and PA. A sample of 504 Spanish students (46.2% girls, 8–12 years old) voluntarily participated in this study. In relation to the first aim, structural equation modeling revealed that PMC indeed mediates the association between AMC and PA. In relation to the second …

Climate Change Compliance, Susan S. Kuo, Benjamin Means

Faculty Publications

Unless corporations prioritize climate change mitigation, efforts to control global warming will fail. Yet, the strategies that have been proposed for enlisting corporations are insufficient to the task. In our era of political polarization, a comprehensive “Green New Deal” to transition the U.S. economy away from fossil fuels is a nonstarter. Nor can we expect corporate risk management or social responsibility to fill the gap; there are practical limits to how far corporate managers can depart from strategies designed to maximize profits for investors.

This Article contends that climate change is a compliance issue. Scholars have overlooked compliance as a …

Comparison Of Ground-Based And Airborne Transient Electromagnetic Methods For Mapping Glacial And Permafrost Environments: Cases From Mcmurdo Dry Valleys, Antarctica, Line M. Madsen, Thue Bording, Denys Grombacher, Nikolaj Foged, Neil Foley, Hilary A. Dugan, Peter T. Doran, Jill Mikucki, Slawek Tulaczyk, Esben Auken

Faculty Publications

The transient electromagnetic (TEM) method is a non-invasive geophysical tool well-suited for subsurface imaging in cold and polar regions, where common targets are associated with strong contrasts in electrical resistivity. By imaging the electrical properties of the subsurface, the TEM methods can discriminate between geological units such as frozen ground (permafrost), fresh/saline groundwater systems, and bedrock/glacier ice. In this study, we compare TEM data acquired with ground-based and airborne TEM systems. We demonstrate the mapping capabilities of these two approaches in high latitude polar environments with datasets from Taylor Glacier, Lake Vanda, and Canada Glacier in the McMurdo Dry Valleys …

Better Colloidal Lithography: Tilt-Rotate Evaporation Overcomes The Limits Of Plasma Etching, Macayla J. Caso, Michael G. Benton, Kevin M. Mcpeak

Faculty Publications

Colloidal lithography (CL) is a promising method for large-area fabrication of nanohole and nanodot arrays with applications in optical biosensing, separations, and magnetic data storage. However, reducing the diameter of the polystyrene sphere mask by plasma etching unavoidably increases their coefficient of variation (CV) and deforms their shape, thereby limiting the pitch-to-hole-diameter ratio of the resulting nanohole array to less than 3:1 and the minimum hole size to 200 nm with a 10% or better CV. We show that tilt-rotate evaporation colloidal lithography (TRE-CL) breaks the trade-off between hole diameter and polydispersity by leveraging glancing angle evaporation, not plasma etching, …

Droplet Behavior In Overexpanded Supersonic Two-Phase Jets, Shyam Menon, Mohana Gurunadhan

Faculty Publications

The interaction of liquid droplets generated by spray atomization with high-speed co-flowing gas is of interest in various applications including fuel injection, spray cooling, and surface coating. The underlying processes involve interactions between the droplets themselves, and with the carrier gas. Additionally, they are influenced by shock and expansion waves present in high-speed flows, accompanied by resulting velocity and pressure fluctuations. Non-intrusive diagnostics including Shadowgraphy and Phase Doppler Particle Anemometry, along with flow simulations, are used to study droplet behavior, characterized by size and velocity changes, as a finely atomized spray is propelled by a carrier gas through a supersonic, …

Predicting Elastic Constants Of Refractory Complex Concentrated Alloys Using Machine Learning Approach, Uttam Bhandari, Hamed Ghadimi, Congyan Zhang, Shizhong Yang, Shengmin Guo

Faculty Publications

Refractory complex concentrated alloys (RCCAs) have drawn increasing attention recently owing to their balanced mechanical properties, including excellent creep resistance, ductility, and oxidation resistance. The mechanical and thermal properties of RCCAs are directly linked with the elastic constants. However, it is time consuming and expensive to obtain the elastic constants of RCCAs with conventional trial-and-error experiments. The elastic constants of RCCAs are predicted using a combination of density functional theory simulation data and machine learning (ML) algorithms in this study. The elastic constants of several RCCAs are predicted using the random forest regressor, gradient boosting regressor (GBR), and XGBoost regression …

Towards A Fully Autonomous Robotic System For Detection And Removal Of Surface Defects In Fiber Glass Panels, James Oubre, William Ard, Joshua Nguyen, Corina Barbalata

Faculty Publications

Wind blades for turbines are commonly manufactured from fiber glass. A last step in the manufacturing process of such blades is sanding of the surface to remove defects that occur during the process. This paper presents an autonomous robotic system performing sanding operations for surface defect removal in fiber glass panels. The proposed approach uses a collaborative robotic system equipped with a vision system. Surface defects are detected using traditional computer vision algorithms and a path planning strategy is designed that solves multi-goal and coverage path planning problems. The robotic system equipped with a specialized end-effector will autonomously perform sanding …

An Ontology For Cardiothoracic Surgical Education And Clinical Data Analytics, Maryam Panahiazar, Yorick Chern, Ramon Riojas, Omar S.Latif, Usha Lokala, Dexter Hadley, Amit Sheth, Ramin E.Beygui

Faculty Publications

The development of an ontology facilitates the organization of the variety of concepts used to describe different terms in different resources. The proposed ontology will facilitate the study of cardiothoracic surgical education and data analytics in electronic medical records (EMR) with the standard vocabulary.

Beyond The High Ground: A Taxonomy For Earth-Moon System Operations, Adam P. Wilmer, Robert A. Bettinger

Faculty Publications

Situational and space domain awareness in the space domain can no longer be confined to that which is found in geosynchronous orbit. International activities—commercial and military—and threats to the planet itself exist and are increasing across the entire Earth-Moon system. This reality requires a new taxonomy to accurately classify space domain awareness missions and better apply resources to and development of the same. This work presents such a taxonomy for the classification of space domain awareness regions.

Leaders Are Readers: What Journals Do Public School Superintendents Read?, Matt Townsley, Benterah C. Morton

Faculty Publications

This study involving 233 participants from ten states sought to identify the types of educational journals practicing superintendents read. The findings indicate that the majority of superintendents are reading publications provided by professional and trade organizations rather than peer-reviewed journals. Across all subgroups, Educational Leadership, School Administrator, Education Week, and The American School Board Journal were the four most frequently read periodicals. The majority of superintendents are reading publications provided by professional and trade organizations rather than peer-reviewed journals.

Differences In Aggression And Alcohol Use Among Youth With Varying Levels Of Victimization And Popularity Status, Sarah T. Malamut, Molly Dawes, Tessa A.M. Lansu, Yvonne Van Den Berg, Antonius H.N. Cillessen

Faculty Publications

Awareness that high-status adolescents can be targets of aggression has grown in recent years. However, questions remain about the associations of the confluence of victimization and popularity with adjustment. The current study fills this gap by examining the joint and unique effects of victimization and popularity on aggression and alcohol use. Participants were 804 Dutch adolescents (50.2% boys, M_age = 13.65) who were followed for one year. High-status victims were more aggressive and drank more alcohol than lower-status victims. High-status victims were also more proactively and indirectly aggressive and self-reported more bullying than high-status non-victims. Thus, the findings demonstrated …

An Expert Assessment On Playspace Designs And Thermal Environments In A Canadian Context, Daniel J. Vecellio, Jennifer K. Vanos, Eric Kennedy, Heather Olsen, Gregory R.A. Richardson

Faculty Publications

Playgrounds are a hub for child play and concerns that may impact children's play there may hinder their health and well-being. Extreme temperatures can increase risks in children of sunstroke, burns from playground surfaces, and exposure to ultraviolet radiation. Despite health risks from extreme heat to children, existing playground design standards around the world, including in Canada, make little-to-no mention of how to design playgrounds for thermal comfort, particularly in summer. To help fill this gap in the Canadian context, several organizations collaborated to develop guidance for thermally comfortable playgrounds in Canada. As part of this project, an online survey …

Modeling A Decision Support System For Covid-19 Using Systems Dynamics And Fuzzy Inference, Vinayaka Gude

Faculty Publications

Covid-19 has impacted the lives of people across the world with deaths and unprecedented economic damage. Countries have employed various restrictions and lockdowns to slow down the rate of its spread with varying degrees of success. This research aims to propose an optimal strategy for dealing with a pandemic taking the deaths and economy into account. A complete lockdown until vaccination is not suitable as it can destroy the economy, whereas having no restrictions would result in more Covid-19 cases. Therefore, there is a need for a dynamic model which can propose a suitable strategy depending on the economic and …

El Surgimiento De La Idea De Involucramiento Social En La Universidad De Los Estados Unidos De America [The Emergence Of The Idea Of Social Involvement In University In The United States Of America], Gustavo Gregorutti

Faculty Publications

Since its inception, the American higher education system has been rapidly evolving into a highly complex and dynamic set of institutions with a broad spectrum of missions. During the last 35 years, questions have arisen about the relevance of their contributions to society as a whole. In this debate, the involved university is born to interact with communities as a partner to teach, research, and solve common problems. This article presents a global description of the emergence of community engagement, its characteristics, and challenges in the context of the United States.

A Comparison Of Correlation-Agnostic Techniques For Magnetic Navigation, Clark N. Taylor, Josh Hiatt

Faculty Publications

Navigation using a Global Navigation Satellite System (GNSS) is common for autonomous vehicles (ground or air). Unfortunately, GNSS-based navigation solutions are often susceptible to jamming, interference, and a limited number of satellites. A proposed technique to aid in navigation when a GNSS-based system fails is magnetic navigation - navigation using the Earth's magnetic anomaly field. This solution comes with its own set of problems including the need for quality magnetic maps in every area in which magnetic navigation will be used. Many of the currently available magnetic maps are generated from a combination of dated magnetic surveys, resulting in maps …

Normalizing Reproductive Genetic Innovation, Myrisha S. Lewis

Faculty Publications

Many societally accepted techniques were quite controversial at inception and for decades after. For example, historically, dialysis was “unnatural,” vaccination was “the poisoned quill,” and artificial insemination was akin to adultery. Despite social and cultural hurdles, the aforementioned medical techniques have today attained overall public acceptance, permissive legal treatment, and even health insurance coverage in some cases.

Unlike many now-routine treatments like in vitro fertilization (IVF), egg freezing, and organ transplantation, which flourished without significant governmental intervention, today’s controversial medical treatments, especially those involving reproductive genetic innovation, face intense regulatory barriers. Reproductive genetic innovation, which is the combination of IVF …

Biometrics And An Ai Bill Of Rights, Margaret Hu

Faculty Publications

This Article contends that an informed discussion on an AI Bill of Rights requires grappling with biometric data collection and its integration into emerging AI systems. Biometric AI systems serve a wide range of governmental purposes, including policing, border security and immigration enforcement, and biometric cyberintelligence and biometric-enabled warfare. These systems are increasingly categorized as "high-risk" when deployed in ways that may impact fundamental constitutional rights and human rights. There is growing recognition that high-risk biometric AI systems, such as facial recognition identification, can pose unprecedented challenges to criminal procedure rights. This Article concludes that a failure to recognize these …

The Myth Of The All-Powerful Federal Prosecutor At Sentencing, Adam M. Gershowitz

Faculty Publications

Relying on a dataset I assembled of 130 doctors prosecuted for illegal opioid distribution between 2015 and 2019, this Article shows that judges rejected federal prosecutors’ sentencing recommendations over two-thirds of the time. Put differently, prosecutors lost much more often than they prevailed at sentencing. And judges often rejected the prosecutors’ sentencing positions by dramatic margins. In 23% of cases, judges imposed a sentence that was half or even less than half of what prosecutors recommended. In 45% of cases, judges imposed a sentence that was at least one-third lower than what prosecutors requested. In short, prosecutors lost most of …

The Relevance Of The Cisg In Settling International Arbitration Claims Arising Due To Covid-19 In Absence Of Force Majeure And Hardship Clauses, Gilberto Guerrero-Rocca

Faculty Publications

No abstract provided.

Corporate Governance Guidelines: How To Improve Disclosure And Promote Better Corporate Governance In Public Companies, Jennifer O'Hare

Faculty Publications

If you are a shareholder of a public corporation, you may think it would be easy to find basic information about your shareholder rights, such as whether shareholders have the right to call special stockholder meetings. You would probably assume that the information would be disclosed in the company’s “Corporate Governance Guidelines,” (CGGs) which, according to a New York Stock Exchange (NYSE) rule, must be posted on the company’s website for shareholder review. But, as this article shows, companies are not required to disclose information about shareholder rights in their corporate governance guidelines, and most companies have chosen not to …

Perspectives Of African American Women About Barriers To Breast Cancer Prevention And Screening Practices: A Qualitative Study, Abosede F. Obikunle, Jochebed Bosede Ade-Oshifogun

Faculty Publications

Breast cancer is a severe illness that often has fatal consequences. Adherence to the recommendations for breast cancer surveillance is poorly practiced among African American women. The study aimed to identify barriers to preventative screening for breast cancer among African American women (AAW) using a qualitative research design. We explored the influence of personal barriers, stereotypes, socioeconomic status, culture, attitudes, and beliefs on African American women's behavior regarding breast cancer screening. Fourteen African American women were interviewed. Data analysis was completed with Interpretative Phenomenology Approach (IPA). This study's findings demonstrated that African American women perceived the barriers to breast cancer …

Editorial: Enviromics In Plant Breeding, Rafael Tassinari Resende, Karine Chenu, Soren K. Rasmussen, Alexandre Bryan Heinemann, Roberto Fritsche-Neto

Faculty Publications

No abstract provided.

Southwest Pacific Tropical Cyclone Development Classification Utilizing Machine Learning And Synoptic Composites, Rupsa Bhowmick, Jill C. Trepanier, Alex M. Haberlie

Faculty Publications

This study evaluates the ability of machine learning algorithms to classify tropical depressions (TDs) and tropical storms (TSs) in the western region of the southwest Pacific Ocean (SWPO). Decision rules are generated to predict the environment required for a depression to fully develop into a mature storm, and the most influential predictors in the classification decision are ranked. TD and TS are discriminated based on a maximum sustained wind speed threshold (≥17 ms−1). Various aerosol, thermodynamic, and dynamic parameters are extracted closest to the initiation point of each non-developing and developing sample. The covariates associated with each labelled sample are …

Correlates Of Zero-Dose Vaccination Status Among Children Aged 12–59 Months In Sub-Saharan Africa: A Multilevel Analysis Of Individual And Contextual Factors, Chamberline E. Ozigbu, Bankole Olatosi Ph.D., Zhenlong Li, James W. Hardin, Nicole L. Hair

Faculty Publications

Despite ongoing efforts to improve childhood vaccination coverage, including in hard-to-reach and hard-to-vaccinate communities, many children in sub-Saharan Africa (SSA) remain unvaccinated. Considering recent goals set by the Immunization Agenda 2030 (IA2030), including reducing the number of zero-dose children by half, research that goes beyond coverage to identify populations and groups at greater risk of being unvaccinated is urgently needed. This is a pooled cross-sectional study of individual- and country-level data obtained from Demographic and Health Surveys Program and two open data repositories. The sample includes 43,131 children aged 12–59 months sampled between 2010 and 2020 in 33 SSA countries. …

Correlates Of Zero-Dose Vaccination Status Among Children Aged 12-59 Months In Sub-Saharan Africa: A Multilevel Analysis Of Individual And Contextual Factors, Chamberline Ozigbu, Bankole Olatosi, Zhenlong Li, James W. Hardin, Nicole L. Hair

Faculty Publications

Despite ongoing efforts to improve childhood vaccination coverage, including in hard-to-reach and hard-to-vaccinate communities, many children in sub-Saharan Africa (SSA) remain unvaccinated. Considering recent goals set by the Immunization Agenda 2030 (IA2030), including reducing the number of zero-dose children by half, research that goes beyond coverage to identify populations and groups at greater risk of being unvaccinated is urgently needed. This is a pooled cross-sectional study of individual- and country-level data obtained from Demographic and Health Surveys Program and two open data repositories. The sample includes 43,131 children aged 12–59 months sampled between 2010 and 2020 in 33 SSA countries. …

“Where The Truth Really Lies”: Listening To Voices From African American Communities In The Southern States About Covid-19 Vaccine Information And Communication, Ran Zhang, Shan Qiao, Brooke Mckeever, Bankole Olatosi, Xiaoming Li

Faculty Publications

The high uptake of COVID-19 vaccines is one of the most promising measures to control the pandemic. However, some African American (AA) communities exhibit vaccination hesitancy due to mis- or disinformation. It is important to understand the challenges in accessing reliable COVID-19 vaccine information and to develop feasible health communication interventions based on voices from AA communities. We conducted 2 focus group discussions (FGDs) among 18 community stakeholders recruited from 3 counties in South Carolina on 8 October and 29 October 2021. The FGDs were conducted online via Zoom meetings. The FGD data were managed and thematically analyzed using NVivo …

Listening To Voices From African American Communities In The Southern States About Covid-19 Vaccine Information And Communication: A Qualitative Study, Ran Zhang, Shan Qiao, Bankole Olatosi Ph.D., Xiaoming Li Ph.D.

Faculty Publications

The high uptake of COVID-19 vaccines is one of the most promising measures to control the pandemic. However, some African American (AA) communities exhibit vaccination hesitancy due to mis- or disinformation. It is important to understand the challenges in accessing reliable COVID-19 vaccine information and to develop feasible health communication interventions based on voices from AA communities. We conducted 2 focus group discussions (FGDs) among 18 community stakeholders recruited from 3 counties in South Carolina on 8 October and 29 October 2021. The FGDs were conducted online via Zoom meetings. The FGD data were managed and thematically analyzed using NVivo …

Active 2d-Dna Fingerprinting Of Wirelesshart Adapters To Ensure Operational Integrity In Industrial Systems, Willie H. Mims, Michael A. Temple, Robert F. Mills

Faculty Publications

The need for reliable communications in industrial systems becomes more evident as industries strive to increase reliance on automation. This trend has sustained the adoption of WirelessHART communications as a key enabling technology and its operational integrity must be ensured. This paper focuses on demonstrating pre-deployment counterfeit detection using active 2D Distinct Native Attribute (2D-DNA) fingerprinting. Counterfeit detection is demonstrated using experimentally collected signals from eight commercial WirelessHART adapters. Adapter fingerprints are used to train 56 Multiple Discriminant Analysis (MDA) models with each representing five authentic network devices. The three non-modeled devices are introduced as counterfeits and a total of …