Digital Commons Network^™

Quantization Dimension For Inhomogeneous Bi-Lipschitz Ifs, Amit Priyadarshi, Mrinal Kanti Roychowdhury, Manuj Verma

School of Mathematical & Statistical Sciences Faculty Publications

Let ν be a Borel probability measure on a d-dimensional Euclidean space Rd, d≥1, with a compact support, and let (p0,p1,p2,…,pN) be a probability vector with pj>0 for 1≤j≤N. Let {Sj:1≤j≤N} be a set of contractive mappings on Rd. Then, a Borel probability measure μ on Rd such that μ=∑Nj=1pjμ∘S−1j+p0ν is called an inhomogeneous measure, also known as a condensation measure on Rd. For a given r∈(0,+∞), the quantization dimension of order r, if it exists, denoted by Dr(μ), of a Borel probability measure μ on Rd represents the speed at which the nth quantization error of order r …

Classification On Boundary-Equilibria And Singular Continuums Of Continuous Piecewise Linear Systems, Hebai Chen, Zhaosheng Feng, Hao Yang, Linfeng Zhou

School of Mathematical & Statistical Sciences Faculty Publications

In this paper, we show that any switching hypersurface of n -dimensional continuous piecewise linear systems is an (n−1) -dimensional hyperplane. For two-dimensional continuous piecewise linear systems, we present local phase portraits and indices near the boundary equilibria (i.e. equilibria at the switching line) and singular continuum (i.e. continuum of nonisolated equilibria) between two parallel switching lines. The index of singular continuum is defined. Then we show that boundary-equilibria and singular continuums can appear with many parallel switching lines.

Note On Illuminating Constant Width Bodies, Alexey Glazyrin

School of Mathematical & Statistical Sciences Faculty Publications

Recently, Arman, Bondarenko, and Prymak constructed a constant width body in R n whose illumination number is exponential in n. In this note, we improve their bound by generalizing the construction. In particular, we construct a constant width body in R n whose illumination number is at least (τ + o(1))n, where τ ≈ 1.047.

Constrained Quantization For Probability Distributions, Megha Pandey, Mrinal Kanti Roychowdhury

School of Mathematical & Statistical Sciences Faculty Publications

In this paper, for a Borel probability measure P on a Euclidean space Rk, we extend the definitions of nth unconstrained quantization error, unconstrained quantization dimension, and unconstrained quantization coefficient, which traditionally in the literature known as nth quantization error, quantization dimension, and quantization coefficient, to the definitions of nth constrained quantization error, constrained quantization dimension, and constrained quantization coefficient. The work in this paper extends the theory of quantization and opens a new area of research. In unconstrained quantization, the elements in an optimal set are the conditional expectations in their own Voronoi regions, and it is not true …

Equity In Focus : Investigating Gender Disparities In Glioblastoma Via Propensity Score Matching, Solomon Eshun

School of Mathematical & Statistical Sciences Faculty Publications

Gender disparities in health outcomes have garnered significant attention, prompting investigations into their underlying causes. Glioblastoma (GBM), a devastating and highly aggressive form of brain tumor, serves as a case for such inquiries. Despite the mounting evidence on gender disparities in GBM outcomes, investigations specific at the molecular level remain scarce and often limited by confounding biases in observational studies. In this study, I aimed to investigate the gender-related differences in GBM outcomes using propensity score matching (PSM) to control for potential confounding variables. The data used was accessed from the Cancer Genome Atlas (TCGA), encompassing factors such as gender, …

Incidents Of Snake Fungal Disease Caused By The Fungal Pathogen Ophidiomyces Ophidiicola In Texas, Alan Lizarraga, Lezley Hart, Michele Nolen, Lance R. Williams, Joseph S. Glavy

Pharmacy Faculty Publications and Presentations

The pathogen Ophidiomyces ophidiicola, widely known as the primary cause of snake fungal disease (SFD), has been detected in Texas’s naïve snakes. Our team set out to characterize O. ophidiicola’s spread in eastern Texas. From December 2018 until November 2021, we sampled and screened with ultraviolet (UV) light 176 snakes across eastern Texas and detected 27. O. ophidiicola’s positive snakes using qPCR and one snake in which SFD was confirmed via additional histological examination. Upon finding the ribbon snake with a clear clinical display, we isolated and cultured what we believe to be the first culture from Texas. This cultured …

Feasibility Of And Experience Using A Portable Mri Scanner In The Neonatal Intensive Care Unit., Maura Sien, Amie L. Robinson, Houchun H. Hu, Christopher R. Nitkin, Ara Hall, Marcie G. Files, Nathan S. Artz, John T. Pitts, Sherwin S. Chan

Manuscripts, Articles, Book Chapters and Other Papers

OBJECTIVE: A portable, low-field MRI system is now Food and Drug Administration cleared and has been shown to be safe and useful in adult intensive care unit settings. No neonatal studies have been performed. The objective is to assess our preliminary experience and assess feasibility of using the portable MRI system at the bedside in a neonatal intensive care unit (NICU) at a quaternary children's hospital.

STUDY DESIGN: This was a single-site prospective cohort study in neonates ≥2 kg conducted between October and December 2020. All parents provided informed consent. Neonates underwent portable MRI examination in the NICU with support …

Interrelationships In Inventory Turnover Performance Between Supplier And Customer Firms, Joseph J. Henry, Peter Christensen, James C. Brau

Faculty Publications

Using inventory turnover to measure the efficiency of corporate inventory management, we perform econometric analyses to verify whether the inventory efficiency of a firm’s supply chain partners is a statistically significant driver of the firm’s own inventory efficiency. We test two mutually exclusive hypotheses. First, suppliers hold inventory on behalf of customers, effectively displacing inventory up the supply chain and resulting in a negative correlation between supplier and customer inventory turnover. Alternatively, inventory efficiency is integrated along the supply chain, resulting in a positive correlation between supplier and customer inventory turnover. Our bivariate and multivariate analyses of both firm- and …

Qualitative Oral-Presentation Feedback: Comparisons From Business Professionals, Instructors, And Student Peers, Matt Baker, William H. Baker

Faculty Publications

Previous studies compare quantitative feedback ratings of student peers and instructors, but new presentation-feedback technologies enable qualitative-feedback comparison. This study extends previous research by comparing qualitative feedback and business professionals’ feedback. Compared to the professionals, the instructors provided similar feedback types and sentiment; students, however, de-emphasized message delivery and made fewer suggestions for improvement. The results suggest that students may need additional practice in critiquing message delivery and in suggesting needed improvements in their peers’ oral presentations. The study also provides a methodology using the new technologies for instructors to calibrate their own and their students’ feedback with professionals’ feedback.

Theming, Service Performance, And Downstream Effects Of Subjective Leisure Experiences, Brian J. Hill, Patti Freeman, Gary Ellis, Emily Catalan

Faculty Publications

We examined determinants (i.e., theming and service performance) and results (proclivity to recommend, enjoyment, perceived value of time spent) of structured leisure experiences. Structured leisure experiences were measured in terms of intensity of engagement (focus on unfolding narrative), absorption (focus on sensory stimuli), and immersion (focus on performance) during participation. Experience measures (n=310) reported by 168 young adults upon exiting a variety of leisure, recreation, and hospitality venues supported the research hypotheses.

The Pacifican January 2023, University Of The Pacific

All Issues - Student Newspaper, The Pacifican, Pacific Weekly

No abstract provided.

The Challenge Of Measuring Traditional And Digital Audiences In A Global Market, Jorge Gallardo-Camacho, César García, Belén Puebla-Martínez

All Faculty Scholarship for the College of Arts and Humanities

This monograph titled Audiences and new forms of broadcast: linear, on-demand, streaming and/or social has five articles that represent the complexity of the phenomenon of audiences across fields and from different perspectives: Traditional television consumption, viewing of Netflix, the social audience of video platforms, the new tastes of viewers for vertical formats driven by mobile phones, and the relationship of influencers with their audiences. This number raises the problem of audience measurement, quantification, and comparison in the new digital age. The measurement of audiovisual audiences faces the problem of the lack of a measurement system accepted in all regions and …

Toxic Timescapes: Examining Toxicity Across Time And Space, Simone M. Müller, May-Brith Ohman Nielsen

Ohio University Press Open Access Books

An interdisciplinary environmental humanities volume that explores human-environment relationships on our permanently polluted planet.

While toxicity and pollution are ever present in modern daily life, politicians, juridical systems, media outlets, scholars, and the public alike show great difficulty in detecting, defining, monitoring, or generally coming to terms with them. This volume’s contributors argue that the source of this difficulty lies in the struggle to make sense of the intersecting temporal and spatial scales working on the human and more-than-human body, while continuing to acknowledge race, class, and gender in terms of global environmental justice and social inequality.

The term toxic …

Settling Ohio: First Peoples And Beyond, Timothy G. Anderson, Brian Schoen

Ohio University Press Open Access Books

Scholars working in archaeology, education, history, geography, and politics tell a nuanced story about the people and dynamics that reshaped this region and determined who would control it.

The Ohio Valley possesses some of the most resource-rich terrain in the world. Its settlement by humans was thus consequential not only for shaping the geographic and cultural landscape of the region but also for forming the United States and the future of world history.

Settling Ohio begins with an overview of the first people who inhabited the region, who built civilizations that moved massive amounts of earth and left an archaeological …

Indication Of Pedestrian’S Travel Direction Through Bluetooth Low Energy Signals Perceived By A Single Observer Device, Mayank Parmar, Paula Kelly, Damon Berry

Conference papers

This paper presents a study to understand the directional sensitivity of a Bluetooth Low Energy (BLE) monitoring device (Observer) and whether, using a single such Observer, the characteristics of its antenna can be used to identify the direction of a pedestrian’s movement. To comprehend the directional characteristics of the antenna of the Observer employed for this study, the device is subjected to BLE signals emitted from a BLE beacon (Broadcaster) in an anechoic chamber. The results of this study confirmed that in the clean, noiseless environment of the chamber, the antenna we employed is clearly more receptive to signals emerging …

The Role Of Soc In Ensuring The Security Of Iot Devices: A Review Of Current Challenges And Future Directions, Hajar Bennouri, Abdiaziz Abdi, Iqbal Hossain, Alexandre Pujol

Conference papers

The growing popularity and deployment of Internet of Things (IoT) devices has led to serious security concerns. The integration of a security operations center (SOC) becomes increasingly important in this situation to ensure the security of IoT devices. In this article, we will present a summary of IoT device security issues, their vulnerabilities, a review of current challenges to keep these devices secure, and discuss the role that SOC can bring in protecting IoT devices while considering the challenges encountered and the directions to consider when implementing a reliable SOC for IoT monitoring.

Robustness Of Image-Based Malware Classification Models Trained With Generative Adversarial Networks, Ciaran Reilly, Stephen O Shaughnessy, Christina Thorpe

Conference papers

As malware continues to evolve, deep learning models are increasingly used for malware detection and classification, including image based classification. However, adversarial attacks can be used to perturb images so as to evade detection by these models. This study investigates the effectiveness of training deep learning models with Generative Adversarial Network-generated data to improve their robustness against such attacks. Two image conversion methods, byte plot and space-filling curves, were used to represent the malware samples, and a ResNet-50 architecture was used to train models on the image datasets. The models were then tested against a projected gradient descent attack. It …

Bilstm−Bigru: A Fusion Deep Neural Network For Predicting Air Pollutant Concentration, Prasanjit Dey, Soumyabrata Dev, Bianca Schoen-Phelan

Conference papers

Predicting air pollutant concentrations is an efficient way to prevent incidents by providing early warnings of harmful air pollutants. A precise prediction of air pollutant concentrations is an important factor in controlling and preventing air pollution. In this paper, we develop a bidirectional long-short-term memory and a bidirectional gated recurrent unit (BiLSTM−BiGRU) to predict PM 2.5 concentrations in a target city for different lead times. The BiLSTM extracts preliminary features, and the BiGRU further extracts deep features from air pollutant and meteorological data. The fully connected (FC) layer receives the output and makes an accurate prediction of the PM 2.5 …

Combinedeepnet: A Deep Network For Multistep Prediction Of Near-Surface Pm2.5 Concentration, Prasanjit Dey, Soumyabrata Dev, Bianca Schoen-Phelan

Conference papers

PM2.5 is a type of air pollutant that can cause respiratory and cardiovascular problems. Precise PM2.5 ( μg/m3 ) concentration prediction may help reduce health concerns and provide early warnings. To better understand air pollution, a number of approaches have been presented for predicting PM2.5 concentrations. Previous research used deep learning models for hourly predictions of air pollutants due to their success in pattern recognition, however, these models were unsuitable for multisite, long-term predictions, particularly in regard to the correlation between pollutants and meteorological data. This article proposes the combine deep network (CombineDeepNet), which combines multiple deep networks, including a …

Actor-Centric Spatio-Temporal Feature Extraction For Action Recognition, Anil Kunchala, Bianca Schoen-Phelan, Mélanie Bouroche

Conference papers

Action understanding involves the recognition and detection of specific actions within videos. This crucial task in computer vision gained significant attention due to its multitude of applications across various domains. The current action detection models, inspired by 2D object detection methods, employ two-stage architectures. The first stage is to extract actor-centric video sub-clips, i.e. tubelets of individuals, and the second stage is to classify these tubelets using action recognition networks. The majority of these recognition models utilize a frame-level pre-trained 3D Convolutional Neural Networks (3D CNN) to extract spatio-temporal features of a given tubelet. This, however, results in suboptimal spatio-temporal …

Optimizing Deep Q-Learning Experience Replay With Shap Explanations: Exploring Minimum Experience Replay Buffer Sizes In Reinforcement Learning, Robert S. Sullivan, Luca Longo, Artificial Intelligence And Cognitive Load Research Lab

Conference papers

Explainable Reinforcement Learning (xRL) faces challenges in debugging and interpreting Deep Reinforcement Learning (DRL) models. A lack of understanding for internal components like Experience Replay, which samples and stores data from the environment, risks burdening resources. This paper presents an xRL-based Deep Q-Learning (DQL) system using SHAP (SHapley Additive exPlanations) to explain input feature contributions. Data is sampled from Experience Replay, creating SHAP Heatmaps to understand how it influences the neural network Q-value approximator's actions. The xRL-based system aids in determining the smallest Experience Replay size for 23 simulations of varying complexities. It contributes an xRL optimization method, alongside traditional …

Educate Or Litigate? The Mindsets Of Advancing Knowledge And Maintaining Financial Stability In Higher Education, Cherri Brown, Cheryl Lentz

Publications

The educational mindset for online higher degrees, specifically the master’s and doctoral journey, shifted from the refractive thinking perspective as transformational experiences, producing objective decision-making processes, to transactional business exchanges, and in some institutions, an exchange for investors and stakeholders. Nehrlich (2006) coined “transactional exchange” as an exchange of one thing for another involving some form of gain. This chapter presents the business of marketing higher education programs (i.e., master’s and doctoral degrees) and the front-line faculty positioned to achieve an institution’s profit margin derived from degree production. Our goal is to discuss the losses and gains when faculty, who …

Editorial: International Myopia Institute White Paper Series 2023, Nina Tahhan, James S. Wolffsohn, Padmaja Sankaridurg, Jost B. Jonas, Mark A. Bullimore, Ian Flitcroft, Lisa A. Ostrin, Christine Wildsoet, Serge Resnikoff

Research Outputs: 2025-Present

No abstract provided.

Behavioral Health Grants Overview 2022, Parkview Health

Health Services and Informatics Research

2022 List of Externally and Internally Funded Research for our Behavioral Health Outreach Initiatives.

Our Mission: To strengthen awareness around mental health, support needs in our community, reduce stigma, and encourage people to connect with care.

Conceptualizing Care Partners' Burden, Stress, And Support For Reintegrating Veterans: A Mixed Methods Study., Nicholas A Rattray, Mindy Flanagan, Allison Mann, Leah Danson, Ai-Nghia Do, Diana Natividad, Katrina Spontak, Gala True

Health Services and Informatics Research

BACKGROUND: People who support Veterans as they transition from their military service into civilian life may be at an increased risk of psychological distress. Existing studies focus primarily on paid family caregivers, but few studies include spouses and informal non-family "care partners." We sought to identify key challenges faced by care partners of Veterans with invisible injuries.

METHODS: Semi-structured interviews were conducted with 36 individuals involved in supporting a recently separated US military Veteran enrolled in a 2-year longitudinal study. CPs completed validated measures on perceived stress, caregiving burden, quality of their relationship, life satisfaction, and flourishing. Independent

RESULTS: Care …

Chemosensory System Of Tsetse Flies (Diptera: Glossinidae), M. N. Getahun, R. W. Macharia, S. G. Nyanjom, G. F. Obiero, S. Diallo, P. O. Mireji, D. Masiga

All Peer-Reviewed Publications

Tsetse flies are exclusively hematophagous and vectors of trypanosomes, which cause human and animal African trypanosomiasis. They are widely distributed in Africa, with 33 extant taxa and 22 species in three sub-genera. Despite a low reproductive rate, tsetse can maintain populations large enough to cause the restriction of the economic use of large areas of tropical Africa through the transmission of trypanosomiases. This success is largely due to their ability to navigate in their environments, using olfactory signals, which elicit critical behavioural phenotypes, such as attraction to hosts for blood meals, larviposition and resting sites, as well as avoidance of …

Birth Of A Narrative: Santa Anna Satanized On The Silver Screen, Eddie Anthony Paniagua Jr.

Capstone Projects

“Birth of a Narrative” is a documentary project looking at the history of how former President of Mexico, Antonio López de Santa Anna, has been depicted in movies, television shows, and other visual media in the United States. American film producers have used the power of motion pictures to create a racialized narrative villainizing Antonio López de Santa Anna and Mexicans so as to aggrandize expansionists bent on eliminating or subordinating Tejanos. Films like “Birth of Texas: Martyrs of the Alamo” by DW Griffith and “The Alamo” by John Wayne pulled no punches as they project racial stereotypes of Latinos …

San Antonio At The Military City, Santos Mencio

Capstone Projects

The San Antonio as the Military City project aims to create a digital medium available to the public that recounts the long history of the many military installations scattered across San Antonio. Exploring the role of these bases in the myriad conflicts the United States has participated in and the impact the bases have had on veterans and the people of San Antonio. This information is conveyed using ArcGIS story maps, and the personal stories of those who have served on these bases will provide a more personal perspective on the role of these bases.

Relationships Among Perceptions Of Support, Experiences Of Gatekeeping, And Burnout In Counselor Educators And Supervisors, Alicia Lamar

Dissertations

Counselor educators and supervisors carry out the responsibility of ensuring that counselors in training are competent and fit for practice. Burnout can occur when stressors in the workplace are not addressed. Engagement in the role of gatekeeper and perceptions of support can be factors that impact burnout in counselor educators. The exploration of variables that may relate to counselor educator burnout would benefit the counseling community including counselor educators, counseling students, counseling clients, and the community at large. There has been a paucity of research exploring the relationships among faculty members’ perceptions of support, experiences of gatekeeping, and burnout in …

Response Of Some Mango-Infesting Fruit Flies To Aqueous Solutions Of The Basil Plant Ocimum Tenuiflorum L, Saliou Niassy, Samira Abuelgasim Mohamed, Xavier Cheseto, Evanson Rigan Omuse, John Bwire Ochola, Fathiya Mbarak Khamis, Boubacar Badji, Sheppard Ndlela, Levi Ombura, Noelah Leah Okun, David Mfuti Kupesa, Thomas Dubois, Yeneneh Taye Belayneh, Sevgan Subramanian, Sunday Ekesi

All Peer-Reviewed Publications

Introduction: Horticulture is an important sub-sector for many African countries. Tephritid fruit flies continue to cause serious direct and indirect damage to the sub-sector. The male annihilation technique (MAT) using methyl eugenol (ME) is among the most revered techniques in fruit fly management. However, ME-based lures are only available to some farmers in Africa. Several basils of the genus Ocimum produce ME. Methods: In laboratory experiments, we used a dual choice olfactometer to assess the attraction of adult oriental fruit fly Bactrocera dorsalis to intact plants, 100 µL commercial methyl eugenol (ME) (positive control), 10 mg/mL of O. tenuiflorum aqueous …