Digital Commons Network^™

Temperature And Salinity Effects On The Physiology Of Bullfrog Tadpoles (Lithobates Catesbeianus) From A Suburban Temperate Wetland, Angela Brown

Theses, Dissertations and Culminating Projects

One of the most robust amphibians is the American Bullfrog, Lithobates catesbeianus, which is a widespread species that is invasive worldwide, and is broadly tolerant of a range of environmental conditions. Despite this tolerance, survival and performance of adult L. catesbeianus can be negatively affected by increasing temperatures and salinity resulting from anthropogenic impacts, such as climate change and road salts. This study focuses on the effects of acute salinity exposure (mimicking road salt influx into a pond) on L. catesbeianus tadpoles at different larval stages. Increased salinity was predicted to negatively affect two physiological performance measures. Critical maximum temperature …

Exploring The Democracy And Climate Policy Nexus, Democracy Mechanisms, And Policy Volatility, Brenna Magliacane

Theses & ETDs

A growing area of climate research explores the forms of government best equipped to confront the climate crisis and shape long-term environmental policy. The theories amongst this research seem to advocate for polar solutions: authoritarianism or democracy. Climate change and related ecological challenges increasingly test the capacity of existing political systems to deliver timely and effective responses. This research project aims to answer the questions: To what extent does democracy influence the adoption and implementation of national climate policy? How do democracies and autocracies differ in the strength and durability of their climate policies? Investigating this relationship can inform future …

The Startup: Critical Perspectives On Technology Entrepreneurship And Digital Labor, Kochav Koren

All Duquesne Faculty Scholarship

Communication and media studies are rapidly reshaped by socio-technological forces within the framework of informational capitalism, where startups emerge as key drivers of the global creative economy. This study critically examines the global startup movement through political economy, classical sociology, and Southern perspectives to assess whether digital entrepreneurship fosters genuine, decentralized innovation or perpetuates speculative financialization and labor precarity. Employing a multi-layered theoretical framework—including Schumpeterian creative destruction, Marxist commodity fetishism, and Weberian charismatic authority—and qualitative fieldwork across North and Latin American tech hubs, the analysis reveals startups as network enterprises that both disrupt markets and reproduce structural inequalities. The findings …

Using Photovoice And Life Course Theory To Understand The Lived Experiences Of Filipino Teenage Parents, Nina Linly D. Capulong, Liane Peña Alampay, Bernice Landoy Mamauag, Jennel Drezza Fe C. Reyes

Psychology Department Faculty Publications

Teenage parents face the unique challenge of simultaneously navigating adolescence and parenthood. Rising adolescent pregnancy rates in the Philippines necessitate urgent efforts to better understand and support them. Using Photovoice, Filipino teenage parents captured their lived experiences through photographs, resulting in eight themes: (1) Managing stresses and conflicts in partner relationships, (2) Peers as a source of emotional support, (3) Support and strain in family relationships, (4) Shifts in normative adolescent experiences and priorities, (5) Strain and agency in balancing roles, (6) Desire to enhance parenting knowledge and skills, (7) Environmental drivers of early sexual exposure, (8) Sexual knowledge from …

The Misinterpretation Of “Corporation” In Indonesia’S Penal Code No. 1 Of 2023: Ensuring Legal Certainty For Recognized Corporate Forms, Rizaldy Alif Syahrial

Indonesia Law Review

Abstract

Law No. 1 of 2023 on the Indonesian Penal Code expands criminal liability to include entities that do not possess legal personality, allowing informal entities such as commanditaire vennootschappen (CV), partnerships (firm), unincorporated business groups, and unregistered associations to be prosecuted as corporations. This expansion aims to close legal loopholes in addressing modern criminal activity and to align Indonesia with global developments in corporate criminal liability. However, extending criminal liability to non legal persons generates conceptual tension because Indonesian legal doctrine distinguishes between natural persons and legal persons, which possess legal personality, decision making organs, separate assets, and autonomous …

Investigating The Role Of Patient-Provider Interaction Quality And Illness Interference In Patients' Basic Psychological Need Fulfillment And Subjective Well-Being, Rebecca Erin Elwood

All Graduate Theses and Dissertations, Fall 2023 to Present

Patient-provider communication occurs between patients and medical professionals. This type of communication is experienced by most U.S. adults yearly, and it can lead to positive health outcomes. The purpose of this study was to examine the role of this type of communication in patient’s lives overall. Specifically, the study considered if good quality patient-provider communication is associated with people feeling an overall sense of autonomy, competence, relatedness, and an overall positive experience of their life. It also considered how much symptoms or treatment of health issues impact people’s lives. Data in the study was collected through an online survey with …

The Augmented Matching Law, Matias A. Avellaneda

All Graduate Theses and Dissertations, Fall 2023 to Present

Every living organism, including humans, has a finite amount of time available: 24 hours in a day, 365 days in a year, and a certain number of years in its life. At every moment, such an organism will be engaging in one of a multitude of possible activities, such as eating, sleeping, or reading this dissertation. We use the term choice to denote the way in which the organism distributes its time among all these activities, and some of these choice patterns are more beneficial to the organism than others, showcasing the importance of understanding the mechanisms underlying choice. A …

Cash, Cleats, And Carpools: A Multi-Method Investigation Of Resource Allocation In Families With Youth Athletes, Emily Susan Delisle

All Graduate Theses and Dissertations, Fall 2023 to Present

The current thesis is an investigation of time and financial resource allocation in families with youth athletes. Study 1 used a survey questionnaire to explore how the number of athletes in a family impacted the way parents allocated time and financial resources to their oldest child’s youth sport participation. Results indicate that an increase in the number of athletes in a family does not decrease parents’ time or financial commitments to their oldest child’s youth sport participation. Study 2 used interviews to explore how nine parents with multiple athletes experienced the intersecting demands of time, finances, and family life while …

Bees In The Trap: Leveraging Bumble Bee (Hymenoptera: Apidae: Bombus) Bycatch For Ecological And Genetic Insights, Tori L. Strausser

All Graduate Theses and Dissertations, Fall 2023 to Present

Managers rely on insect monitoring traps to detect insect pests that harm crops and protect food and other agricultural production. However, these traps also capture non-target insects, including bumble bees, raising concerns about whether repeated trapping could harm pollinator populations. This thesis explores whether bees caught as non-targets, also called bycatch, in routine pest monitoring traps can be used to better understand bumble bee populations, and whether traps pose risks to their long-term persistence. Using bumble bees collected from pest surveillance traps placed in crop fields across Utah, this research examined seasonal patterns in body size, timing of capture, and …

Advancing Management Strategies For Two Promising Mason Bee Species (Osmia Ribifloris And Osmia Bruneri) For Berry Pollination, Miranda L. Jones

All Graduate Theses and Dissertations, Fall 2023 to Present

Bee management can broadly refer to human manipulation of one or multiple parts of a bee’s lifecycle. Managing honey bees, commonly referred to as beekeeping, is responsible for providing most pollination for global food crops. However, using more than one bee species for crop pollination can have many benefits. Benefits include better crop pollination and insurance in case one bee species underperforms or its population collapses. Some bees within the genus Osmia are already widely managed for crop pollination because their developmental lifecycle allows bee managers to readily deploy pollinating bees in sync with varying crop blooms, and for certain …

"In Any Other Circumstance I Am Not In Work Mode. I Am Clocked Out": Chappell Roan And The Objectified Persona, Aubry Louise

All Graduate Theses and Dissertations, Fall 2023 to Present

It is known that celebrities have influence on their audience’s attitudes and behaviors. Within the last few decades, multiple celebrities have created distinctions between their public/stage self and their private self, however, less is known about the ways that they differentiate between the two. This paper looks at celebrity public persona’s and how these persona’s influence their audience. I use Kayleigh Amstutz, otherwise known as Chappell Roan, as my case study. This thesis offers an analysis of how Amstutz talks about Kayleigh differently than Chappell within social media posts, interviews, and commentary from media outlets. I use the concepts of …

Integrated Soil-Water Processes And Irrigation Management For Agricultural Water Optimization In Semi-Arid Regions, Tejinder Singh

All Graduate Theses and Dissertations, Fall 2023 to Present

Water is one of the most important resources for agriculture in the western United States. In semi-arid regions, farmers depend on irrigation to grow crops, but water supplies are becoming less reliable because of drought, declining snowpack, groundwater depletion, and increasing competition for limited water. Improving agricultural water use is therefore not simply about applying less water. It also requires understanding where water goes after it enters a field, how long it remains available to crops, and how farmers can use that information to make better irrigation decisions. This dissertation follows water through irrigated agricultural systems to better understand how …

Understanding And Predicting Precipitation Characteristics In The United States Through Machine Learning, Numerical Modeling And Measurements, Cody Luther Ratterman

All Graduate Theses and Dissertations, Fall 2023 to Present

Precipitation is one of the most important yet uncertain variables in the climate system. It varies dramatically in terms of timing, accumulation, rate, and phase, depending on location, season, circulation patterns, and atmospheric conditions. Precipitation forecasts, especially snowfall, are essential to supporting drought mitigation and water management in the Intermountain West. Because rainfall and snowfall lead to opposite effects on snowpack, accurately partitioning rain and snow is important to estimate snowpack levels, winter recreation, mountain ecosystems and runoff. The research findings in this dissertation have advanced the understanding and prediction of precipitation and snowpack in the U.S. by addressing the …

Experimental And Numerical Investigation Of Flow Coefficients In Three-Way, T-Port, Ball Valve, Tyler A. Mindrum

All Graduate Theses and Dissertations, Fall 2023 to Present

Many systems that move fluids, like water distribution networks and heating, ventilation, and air conditioning (HVAC) systems, rely on valves to control flow. This study evaluates a three-way valve, which can direct flow in multiple directions, but has not been extensively researched. Testing included physical data collection and computer simulations to compare how the valves behaved under different valve openings and flow conditions. The results showed that computer simulations can predict the general flow behavior of three-way valves, but that physical testing is still important, especially for valves with complex internal geometries.

Llm-As-A-Judge For Software Engineering: Literature Review, Vision, And The Road Ahead, Junda He, Jieke Shi, Terry Yue Zhuo, Christoph Treude, Jiamou Sun, Zhenchang Xing, Xiaoning Du, David Lo

Research Collection School Of Computing and Information Systems

The rapid integration of Large Language Models (LLMs) into software engineering (SE) has revolutionized tasks from code generation to program repair, producing a massive volume of software artifacts. This surge in automated creation has exposed a critical bottleneck: the lack of scalable and reliable methods to evaluate the quality of these outputs. Human evaluation, while effective, is very costly and time-consuming. Traditional automated metrics like BLEU rely on high-quality references and struggle to capture nuanced aspects of software quality, such as readability and usefulness. In response, the LLM-as-a-Judge paradigm, which employs LLMs for automated evaluation, has emerged. This approach leverages …

The Relationship Between Maintenance And Overhaul Employee Spending, Business Model, Geographic Region, And The Financial Performance Of Commercial Airlines, Naumaan Khalid Sheikh

Walden Dissertations and Doctoral Studies

After nearly 5 decades of deregulation, commercial airline leaders still lack the capability to improve financial performance by structuring their maintenance operations to gain competitive advantages in highly competitive global markets. Without an effective strategy, airline maintenance affects service and financial performance. Framed with Porter’s competitive advantage theory, this quantitative nonexperimental correlational project was to examine the relationships between airline in-house maintenance and overhaul employee spending, business model, geographic region, and financial performance of global commercial full-service carrier (FSC) and low-cost carrier (LCC) airlines. Longitudinal panel data were collected from 121 LCCs and FSCs operating from 2001 to 2019 in …

Exploring The Experiences Of Teacher Assistants Who Remain In A Rural Michigan Head Start Program, Melissa Thiebaut

Walden Dissertations and Doctoral Studies

The problem addressed in this study was the approximately 35% attrition rate of teacher assistants (TAs) in a rural Head Start program. Grounded in Bakker’s job resources and job demands theory, the purpose of this basic qualitative study was to explore the experiences of TAs who chose to remain working in a rural Head Start program and the factors that influenced their decisions to stay. Data were collected by conducting semistructured interviews with 12 TAs from one Head Start program. Data analysis involved a deductive data analysis method with two categories, job resources and job demands, being predetermined by the …

Measuring Health System Readiness In Saint Lucia Using International Health Regulations Capacity Indicators, Melissa Steele

Walden Dissertations and Doctoral Studies

Emerging infectious diseases continue to challenge national health systems, particularly in small island developing states with limited preparedness resources. Limited evidence comparing the International Health Regulations (2005) State Party Self-Assessment Annual Reporting (IHR SPAR) capacities of small island developing states with those of high-income countries limits efforts to identify preparedness gaps and strengthen health systems. The purpose of this quantitative comparative study was to evaluate Saint Lucia's preparedness using IHR SPAR indicators, compare its preparedness with the United States, and assess changes between 2023 and 2024. Guided by the World Health Organization Health System Framework, a quantitative cross-sectional design using …

Staff Education To Improve Provider Knowledge Of Marijuana Use And Mental Health In A Community Mental Health Setting, Kalubi Florence Muganguzi

Walden Dissertations and Doctoral Studies

This staff education doctoral project addressed a practice gap in provider knowledge, confidence, and consistency when assessing, educating, and documenting marijuana use among patients receiving mental health services. The practice-focused question was the following: For staff in a community mental health setting, does a structured staff education intervention on marijuana use and mental health improve knowledge and confidence related to assessment, patient education, documentation, and psychotropic treatment monitoring? The purpose was to translate current evidence into a practical education session, screening guidance, patient counseling points, and documentation prompts. The evidence base included 10 peer-reviewed articles addressing cannabis use, mental health …

Leveraging Artificial Intelligence To Enhance Marine Biosecurity, Marnie L. Campbell, Chi T.U. Le, Jumana Abu-Khalaf, Craig D.H. Sherman

Research outputs 2022 to 2026

Marine biosecurity stands at the crossroads of innovation and necessity, with artificial intelligence (AI) offering promising tools to enhance risk assessment, surveillance, and response strategies for invasive species management. Despite the rapid growth of AI applications in marine science, there has been no comprehensive overview of its potential role in enhancing and supporting marine biosecurity. Our literature review aims to fill this gap, showing that AI use in this field remains limited and underdeveloped. Through our literature analysis, we identify key opportunities for AI research and innovation across the marine biosecurity continuum, while also highlighting both general and domain-specific challenges. …

Attraction Of Nocturnal Scarab Beetles By Unusual Floral Volatiles In A Banksia (Proteaceae) With Functionally Diverse Pollinators, S. K. Wawrzyczek, B. Bohman, S. L. Krauss, I. M. Butler, G. R. Flematti, K. Farnier, S. E. Hoebee, R. A. Davis, R. D. Phillips

Research outputs 2022 to 2026

Pollination by beetles has evolved multiple times in flowering plants but with relatively few plant species adapted specifically to pollination by scarab beetles (Coleoptera: Scarabaeidae). However, some plant species may produce floral scents and offer floral rewards that attract scarabs alongside other pollinator functional groups. In Banksia attenuata (Proteaceae), nocturnal observations led to the discovery of extensive floral visitation by beetles, alongside birds, mammals and diurnal insects. Given the distinctive melon-like floral scent of B. attenuata, we predicted long-distance attraction of beetles by chemical cues. We undertook floral visitor surveys aided by camera traps and video recordings, and quantified insect …

Plant-Based Diets, Ultra-Processed Foods, And Risks Of Mortality And Major Chronic Diseases: A Prospective Cohort Study, Alysha S. Thompson, Amy Jennings, Nicola P. Bondonno, Aedín Cassidy, Tilman Kühn

Research outputs 2022 to 2026

Background: Higher-quality plant-based diets (PBDs) are associated with lower risks of mortality and chronic disease, but whether ultra-processed food (UPF) content affects these associations remains unclear. We examined whether UPF content influences the relationship between plant-based dietary patterns and risks of mortality and major chronic diseases, accounting for nutrient quality. Methods: This prospective cohort study included 124,836 UK Biobank participants aged 40–70 years (recruited 2006–2010). Dietary intake was assessed using the Oxford WebQ 24-h recall. Four modified Plant-Based Diet Indices (PDIs) were derived to distinguish healthy (hPDI) and unhealthy (uPDI) patterns with high- and low-UPF content, using the Nova classification …

Patients’ And Carers’ Experiences Of The Postoperative Care Pathway Following Coronary Artery Bypass Grafting: A Descriptive Qualitative Study, Dima Nasrawi, Sharon Latimer, Debbie Massey, Brigid M. Gillespie

Research outputs 2022 to 2026

Aim: This study aimed to understand patients’ and carers’ experiences of the inpatient postoperative care pathway during Phase 1 cardiac rehabilitation, including patients’ recommendations to improve its delivery, their engagement, and discharge preparation.

Methods: This was a descriptive qualitative study. Recruitment occurred over 1 month (February to March 2023) in a cardiac surgical ward at a large tertiary hospital. Adult patients who had recently undergone coronary artery bypass grafting and their carers were interviewed. Inductive content analysis was used to analyse interviews.

Results: Nine patients and five carers were interviewed. Patients were mainly male (n=8), while carers were mostly female …

Right-Sized Glycolysis In Growing Children: A Muscle Mass-Based Scaling Perspective, Sébastien Ratel, Joffrey Bardin, Anthony J. Blazevich

Research outputs 2022 to 2026

No abstract provided.

Efficient Test-Time Retrieval Augmented Generation, Hailong Yin, Bin Zhu, Jingjing Chen, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

Although Large Language Models (LLMs) demonstrate significant capabilities, their reliance on parametric knowledge often leads to inaccuracies. Retrieval Augmented Generation (RAG) mitigates this by incorporating external knowledge, but these methods may introduce irrelevant retrieved documents, leading to inaccurate responses. While the integration methods filter out incorrect answers from multiple responses, but lack external knowledge like RAG methods, and their high costs require balancing overhead with performance gains. To address these issues, we propose an Efficient Test-Time Retrieval-Augmented Generation Framework named ET2RAG to improve the performance of LLMs while maintaining efficiency. Specifically, ET2RAG is a training-free method, that first retrieves the …

Continuous Query For Top-K Maximal Sum Intervals Over Streaming Data, Zhongshuai Zhang, Xiaochun Yang, Baihua Zheng, Rui Zhu, Haomin Li, Bin Wang

Research Collection School Of Computing and Information Systems

The continuous identification of top-k maximal sum intervals using a sliding window over a data stream is a critical operation for applications in IoT and beyond. A maximal sum interval is a non-overlapping, contiguous subsequence with the maximal sum in a sequence of signed values. Existing algorithms are ill-suited for streaming contexts: they either exhaustively enumerate all intervals even for small k values, or depend on indexes that require frequent and costly restructuring. We propose a novel partition-based strategy. Our core insight is a partitioning scheme that guarantees that any maximal sum interval is fully contained within a single partition, …

Success Of New Ideas In Online Platforms: An Idea Network Perspective, Yimei Zhou, Qian Tang, Vincent Z.W. Mack Mack, Shao Yi Liaw

Research Collection School Of Computing and Information Systems

On online platforms, new ideas often emerge by recombining existing ones within idea networks. Unlike traditional knowledge networks, idea networks represent curated, meaning-based associations among ideas, offering a distinct lens on recombination. Drawing upon a hypergraph perspective, we investigate how new idea success depends on their structural and content attributes, and how collaborative participation shapes these attributes. Using data from an ideation platform, we find that both structural embeddedness and bridging benefit new idea success. Content diversity has no direct effect, but it amplifies the benefits of bridging while constraining those of embeddedness. Both crowd contributions and ideator expertise strengthen …

Parameterized Approximation Schemes For Fair Clustering In Doubling Metrics, Xiaoliang Wu, Ting Liang, Zhize Li, Qilong Feng

Research Collection School Of Computing and Information Systems

Fair clustering has garnered considerable attention, with various fairness notions proposed to ensure equitable representation across demographic groups. In this paper, we focus on the k-center problem in bounded doubling metrics under two popular fairness requirements: group fairness and data summarization fairness, referred to Group Fair k-Center (Gf-k-Cen) and Data Summarization Fair k-Center (Dsf-k-Cen), respectively. Both fairness notions extend classical clustering formulation by associating each data point with a demographic label. Motivated by recent advances in parameterized approximation results for fair clustering, we investigate whether these problems admit Fixed-Parameter Tractable (FPT) approximation schemes in bounded doubling metrics. The previous algorithms …

Final Master's Portfolio On Writing Transfer, Clarence Snell

Master of Arts in English Plan II Graduate Projects

This final portfolio shows how gauging student interest can help to transfer their knowledge from subject to subject, whether it be by using Resident Evil to help with ethics or creative writing to help with grammar. The first essay goes into detail on the ethics of Resident Evil: The Official Strategy Guide, written for the original 1996 game. It elaborates on the guide and the game itself, using framing systems like that of Kant to gain a deeper understanding of the source material. Then, the second essay explains how creative writing can help students learn grammar, showing how both …

A Practical Guide To Science Writing & Publishing, Ryan W. Mcewan

Department of Biology Open Educational Resources

This document contains advice that I developed for students working in my research lab and represents an approach to science writing that is in some ways very basic, and in others, quite idiosyncratic.

Writing is a creative process and as you advance as a science writer you will get stronger, and stronger, and you will develop your own process. At some point, someone might give you different advice about science writing than what you find here. If you join a research lab your PI might have their own program. You should absorb all of the good advice you can find. …