Digital Commons Network^™

Inefficiencies In Water Supply And Perceptions Of Water Use In Peri-Urban And Rural Water Supply Systems: Case Study In Cali And Restrepo, Colombia, Diana Carolina Callejas Moncaleano, Saket Pande, Melissa Haeffner, Juan Pablo Rodríguez Sánchez, Luuk Rietveld

Environmental Science and Management Faculty Publications and Presentations

Introduction:

Water scarcity is a significant global challenge that frequently manifests as inadequate water supply for domestic purposes. However, domestic water insecurity can occur even in regions where water is naturally abundant. Despite Colombia’s plentiful surface water resources, rural and peri-urban communities often experience limited access to water. Existing water supply systems are frequently susceptible to poor maintenance, particularly in remote areas where much of the infrastructure remains outdated. Consequently, water is often lost through leaks or unintentional non-domestic use. Although a regulatory framework for water usage exists, it does not consistently translate into effective implementation.

Methodology:

Based on an …

Investigating The Learning Goals And Expectations Of Laboratory Coordinators, Graduate Teaching Assistants, And Students In General And Organic Chemistry Laboratory Courses, Elizabeth Blanche Vaughan, A. Montoya-Cowan, Christine Kim, Alexandra Stephens, Osie Hamilton, Jack Barbera

Chemistry Faculty Publications and Presentations

As chemistry education researchers and practitioners continue to investigate and improve undergraduate laboratory courses, it is necessary to consider the perspectives held by each of the stakeholders who are directly involved in these courses, including laboratory coordinators, graduate teaching assistants, and students. This study sought to qualitatively investigate the learning goals and expectations held by laboratory coordinators, graduate teaching assistants (GTAs), and students for general and organic chemistry laboratory courses at a single institution. This was completed through the collection and analysis of semistructured interview data from laboratory coordinators and GTAs and open-ended written responses from students. Results indicated that …

Faculty Senate Monthly Packet November 2024, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The November 4, 2024 monthly packet includes the November agenda, appendices, and the Faculty Senate minutes and attachments from the meeting held November 4, 2024.

A Novel Maximum Likelihood Based Probabilistic Behavioral Data Fusion Algorithm For Modeling Residential Energy Consumption, Tanmoy Bhowmik, Naveen Chandra Iraganaboina, Naveen Eluru

Civil and Environmental Engineering Faculty Publications and Presentations

The current research effort is focused on improving the effective use of the multiple disparate sources of data available by proposing a novel maximum likelihood based probabilistic data fusion approach for modeling residential energy consumption. To demonstrate our data fusion algorithm, we consider energy usage by fuel type variables (for electricity and natural gas) in residential dwellings as our dependent variable of interest, drawn from residential energy consumption survey (RECS) data. The national household travel survey (NHTS) dataset was considered to incorporate additional variables that are not available in the RECS data. With a focus on improving the model for …

A 3d Memristor Architecture For In-Memory Computing Demonstrated With Sha3, Muayad J. Aljafar, Rasika Joshi, John M. Acken

Electrical and Computer Engineering Faculty Publications and Presentations

Security is a growing problem that needs hardware support. Memristors provide an alternative technology for hardware-supported security implementation. This paper presents a specific technique that utilizes the benefits of hybrid CMOS-memristors technology demonstrated with SHA3 over implementations that use only memristor technology. In the proposed technique, SHA3 is implemented in a set of perpendicular crossbar arrays structured to facilitate logic implementation and circular bit rotation (Rho operation), which is perhaps the most complex operation in SHA3 when carried out in memristor arrays. The Rho operation itself is implemented with CMOS multiplexers (MUXs). The proposed accelerator is standby power-free and circumvents …

Nfts At The Nexus Of Innovation And Sustainability: A Framework Aligning Nft Affordances With The Sustainable Development Goals, Kristi Yuthas

Business Faculty Publications and Presentations

The United Nations’ Sustainable Development Goals (SDGs) are goals associated with the most significant global issues, which include climate, health, security, and poverty. The goals are part of an agenda for making progress on environmental, social, and economic issues while ensuring peace and leaving no one behind. Meeting these goals requires effort and innovation on all fronts, including technology. Information and communication technologies have long contributed to these efforts, and more recently, blockchain for good projects have begun to bear fruit. Non-fungible tokens (NFTs), which are, in essence, certificates of ownership stored on a blockchain, can also contribute to sustainable …

A Finite-Horizon Approach To Active Level Set Estimation, Phillip Kearns, Bruno Jedynak, John Lipor

Mathematics and Statistics Faculty Publications and Presentations

We consider the problem of active learning for level set estimation (LSE), where the goal is to localize all regions where a function of interest lies above/below a given threshold as quickly as possible. We present a finitehorizon search procedure to perform LSE in one dimension while optimally balancing both the final estimation error and the distance traveled during active learning for a fixed number of samples. A tuning parameter is used to trade off between the estimation accuracy and distance traveled. We show that the resulting optimization problem can be solved in closed form and that the resulting policy …

How Management Disclosure And Auditor Disclosure Affect Auditor Liability: The Case Of The Going Concern Financial Accounting Standard, Joel Owens, K. Kelli Saunders, Samantha Schachner, Todd A. Thornock

Business Faculty Publications and Presentations

A current FASB standard requires management to assess the ability of the entity to continue as a going concern (GC) and disclose any substantial doubt about such. Using contextualized experiments wherein the auditor does not issue a GC opinion for an entity that subsequently fails, we study the effects of management disclosure, increased management disclosure responsibility, and auditor disclosure on auditor blame, a proxy for auditor liability. Consistent with predictions based on the Culpable Control Model, we find (1) management disclosure of substantial doubt increases auditor liability; (2) when management has not disclosed substantial doubt, auditor liability is greater under …

The Crime Of Luring A Minor For Contact Sexual Abuse: Exploration Of Demographic Patterns & Criminal Records Of Convicted Offenders., Bridget Diamond-Welch, Anna E. Kosloski, Christopher P. Carey, Molly Mcdade

Criminology and Criminal Justice Faculty Publications and Presentations

Background

Child sexual abuse (CSA) is a significant public health problem, with a small but important subset of crimes committed by strangers, often facilitated through luring. Understanding the characteristics of individuals who engage in luring is essential for developing effective prevention and intervention strategies.

Objective

This study aimed to analyze the demographic characteristics and criminal histories of individuals convicted of luring a minor and to examine the types of crimes committed before and after conviction.

Participants and setting

The study included all individuals (N = 115) convicted of “luring a minor” between 2011 and 2021 in one county in …

An Exploration Of Self-Efficacy And Its Associated Factors Among Rheumatoid Arthritis Patients In Taiwan, I-Yu Hsiao, Hanoch Livneh, Wei-Jen Chen, Ming-Chi Lu, Tzung-Yi Tsai

Counselor Education Faculty Publications and Presentations

Self-efficacy is an important ingredient in successful disease management, especially in patients with chronic conditions such as rheumatoid arthritis (RA). However, the information on self-efficacy and its influencing factors among RA patients is scarce. This study investigated the level of self-efficacy and its pertinent predictors among RA patients in Taiwan. This cross-sectional study recruited patients with RA from a hospital in Taiwan between January and October 2023. A structured questionnaire was used to collect data on respondents’ demographic and job characteristics and included a Chinese version of the Arthritis Self-Efficacy Scale (ASES). Multiple linear stepwise regression analysis was employed to …

Readiness Of Cybersecurity In The Usa Energy Industry, Aaron Cavanaugh

Dissertations and Theses

Cybersecurity Readiness shows an organizations ability of applicant and application to be able to fully utilize computing resources through behaviors (e.g., training employees), practices, and processes, while managing risk through efficient controls in order to prevent, detect, and respond to outage scenarios using audit and assessment techniques. An evaluation of cybersecurity readiness for the USA energy industry assists industry decision makers to comprehensively assess readiness gaps for prioritizing a risk-based cybersecurity implementation plan. There is a currently a lack of a Multi-Criteria Decision Model (MCDM) to assist decision makers to comprehensively assess Readiness of Cybersecurity in the USA Energy Industry. …

Book Review Of, Calling Family: Digital Technologies And The Making Of Transnational Care Collectives, Michele Gamburd

Anthropology Faculty Publications and Presentations

Book Review: Calling Family: Digital Technologies and the Making of Transnational Care Collectives

Dcai: The 4th International Workshop On Data-Centric Ai, Yanjie Fu, Kunpeng Liu, Dongjie Wang

Computer Science Faculty Publications and Presentations

Machine learning traditionally emphasizes developing models for given datasets, but real-world data is often messy, making model improvement insufficient for enhancing performance. Data-Centric AI (DCAI) is an emerging field that systematically improves datasets, leading to significant practical ML advancements. While experienced data scientists have manually refined datasets through trial-and-error and intuition, DCAI approaches data enhancement as a systematic engineering discipline. DCAI represents a shift from focusing on models to the underlying data used for training and evaluation. Despite the dominance of common model architectures and predictable scaling rules, building and using datasets remain labor-intensive and costly, lacking infrastructure and best …

The Carbon Crater: Comparing Anthropogenic Greenhouse Gas Emissions To Historical Planetary Events, Hal T. Nelson, Paul Reynolds, Brian W. Jewett

Public Administration Faculty Publications and Presentations

Equilibrium climate sensitivity modeling relies heavily on paleoclimate records that were affected by meteorite impacts and volcanic explosions. This paper conducts a thought experiment by re-assembling known data and theories to shed new light on anthropogenic carbon waste. Anthropogenic activity, meteorite impacts and volcanic explosions all extract material from the Earth’s crust and deposit it in the atmosphere. This thought experiment tests if the mass of anthropogenic greenhouse gas emissions from 1851 to 2021 is comparable to the mass of atmospheric emissions from historical planetary events. Approximately 3.60 trillion tons of anthropogenic carbon dioxide equivalents are converted into volume and …

Re-Evaluating Hypertragulid Diversity In The John Day Basin, Oregon, Usa, Nicholas A. Famoso, Lana K. Jewell

Geology Faculty Publications and Presentations

Despite their relative abundance, members of the family Hypertragulidae (Artiodactyla, Mammalia) have proved a conundrum regarding species diversity in the Turtle Cove Member (Oligocene) of the John Day Formation, located in central and eastern Oregon. Three species and two separate genera are described in the area, but previous research lacks statistical support for this level of variation. We use coefficients of variation (V) on measurements of dentition and astragali of hypertragulid specimens designated Hypertragulus hesperius, Hypertragulus minutus, and Nanotragulus planiceps as a metric for determining whether there were multiple species present in the population. Asymptotic and modified signed-likelihood ratio V …

Planting The Seed: Using Research As A Tool To Revitalize Puberty Ceremonies In Anishinaabe Communities, Miigis B. Gonzalez, Alexandra Ziibiins Johnson, Lisa Awan Martin, Jillian Naawakwe, Jillian Fish, Lalaine Sevillano, Melissa L. Walls, Lee Obizaan Staples

School of Social Work Faculty Publications and Presentations

Purpose: The purpose of this work is to honor the wisdoms of Anishinaabe Elders, community and culture by interweaving these teachings with my own (first author) Anishinaabe experiences and a research project. Ceremonies are an important health practice for Anishinaabe people. This project aimed to gain a clearer conceptualization of the protective role of Anishinaabe puberty ceremonies on health in adolescence and across the lifespan. Design/methodology/approach Spiritual offerings guided this project at every stage including inviting Elders and community members into shared spaces of storytelling and teaching elicitation and grounding me as I carefully adopted the use of a western …

Win Your Race Goal: A Generalized Approach To Prediction Of Running Performance., Sandhyarani Dash

Electrical and Computer Engineering Faculty Publications and Presentations

We introduce a novel approach for predicting running performance, designed to apply across a wide range of race distances (from marathons to ultras), elevation gains, and runner types (front-pack to back of the pack). To achieve this, the entire running logs of 15 runners, encompassing a total of 15,686 runs, were analyzed using two approaches: (1) regression and (2) time series regression (TSR). First, the prediction accuracy of a long short-term memory (LSTM) network was compared using both approaches. The regression approach demonstrated superior performance, achieving an accuracy of 89.13% in contrast, the TSR approach reached an accuracy of 85.21%. …

Under Pressure: Employee Work Stress, Supervisory Mentoring Support, And Employee Career Success, Berrin Erdogan, Selin Kudret, Emily D. Campion, Talya N. Bauer, Julie Mccarthy, Bonnie Hayden Cheng

Business Faculty Publications and Presentations

Despite consistent findings that stressed employees benefit from social support, these employees do not always have access to such support. We propose and test a conceptual model suggesting employee work stress will negatively affect supervisory career and psychosocial mentoring support. Drawing from social exchange theory, we predict this will indirectly affect employee career success (lower career satisfaction and promotability ratings, fewer promotions), and that the relationship between employee work stress and lower supervisory mentoring support can be explained by lower levels of work engagement experienced by, and attributed to, stressed employees. We tested our model across three studies. In Study …

Searching For Authentic Cultural Engagement In The Classroom, James H. Lyle Jr.

Northwest Journal of Teacher Education

Many teachers in the current public education system in the United States do not fully consider the unique societal and cultural aspects of African American and Latinx learners. As a result, many teachers could benefit from developing skills that strengthen their understanding of authentic engagement, cultural competency, and cultural congruency to aid in implementing culturally relevant and sustaining pedagogical practices that benefit the diverse learning styles of these students. Additionally, some African American/Black teachers have adopted a standalone Eurocentric approach to teaching that could further alienate and disenfranchise students of Color. To address these issues, I describe and explain the …

Promoting Equity In Culturally Diverse Schools: A Literature Review Of Third Space Pedagogy, Sarah E. Harrison, Heidi Curtis

Northwest Journal of Teacher Education

The increasingly culturally diverse settings present within today’s P-12 schools necessitate improved pedagogical practices to develop more culturally inclusive and equitable learning environments. Third-space pedagogical practices demonstrate potential as an approach for increasing educational equity by promoting cultural hybridity among diverse students and stakeholders through negotiated sociocultural perspectives and interactions. This literature review summarizes recent scholarship surrounding third-space pedagogy, including discussions of how educators can foster third-space relationships and design third-space learning opportunities in diverse educational settings. In addition, lessons from COVID-19 third-space learning opportunities are discussed as a model for re-envisioning equitable instructional practices post-pandemic.

Teacher Retention Challenges: What We Learned Before And After Covid-19, Brenda Morton, Edd., Joel Maresh Edd

Northwest Journal of Teacher Education

The COVID-19 pandemic exacerbated the already elevated stress levels among teachers, leading to contemplation of leaving the profession. As educators were compelled to transition to online teacher, they suddenly found themselves immersed in the households of their students, an entirely novel experience. This newfound proximity granted teachers insight into various aspects of the students’ lives, including family dynamics, home environments, levels of household stress, and the accessibility of essential resources. In addition to the teaching duties, educators were tasked with the development of online curricula, the acquisition of online learning resources, and providing support to parents and families during a …

Education And Tolerance Of Homosexuality In Diverse Islamic Contexts, Camila Swift

Dissertations and Theses

This study examines the relationship between educational attainment and moral tolerance of homosexuality among Muslims in Algeria, Malaysia, Pakistan, and Turkey. Utilizing human development theory to understand how educational attainment affects social values, the analysis draws on data from over 5,000 respondents from the Pew Research Center's "World's Muslims" dataset, which includes responses from a nationally representative sample of Muslims in these four countries. Logistic regression models and predicted probabilities are used to explore how educational attainment relates to moral tolerance of homosexuality, adjusting estimates for various alternate explanations through the use of control variables. The findings reveal that the …

Projected Loss Of Rock Glacier Habitat In The Contiguous Western United States With Warming, Abigail C. Lute, John T. Abatzoglou, Andrew G. Fountain, Timothy C. Bartholomaus

Geology Faculty Publications and Presentations

Rock glaciers support alpine biodiversity and may respond more slowly to warming than snow or glaciers. While responses of snow and glaciers to climate change are relatively well understood, a robust assessment of rock glacier environmental niche, future distributions of rock glaciers and potential for development of rock glaciers from current glaciers is lacking. Using process-relevant, high-resolution environmental descriptors, we develop a species distribution model of the topographic, geologic and hydroclimatic niche of rock glaciers that provides novel estimates of potential rock glacier distributions for different climates. We identify mean annual air temperature and headwall area as the dominant controls …

Online Crime Reporting: A New Threat To Police Legitimacy?, Kris Henning, Kimberly Kahn, Kathryn Wuschke, Christian Peterson, Stephen Yakots

Criminology and Criminal Justice Faculty Publications and Presentations

Police are more likely to be perceived as legitimate when officers are procedurally just during interactions with the public (i.e. impartial, transparent, fair and respectful). Efforts to reinforce these skills have largely focused on contacts initiated by officers. Less attention has been paid to interactions with crime victims. Moreover, in recent years many police departments have sought to increase efficiency by directing victims to report online, rather than communicating directly with an officer. Very little is known about how victims experience online reporting systems. This study surveyed 1,198 property crime victims who used a large US police department’s online reporting …

H2d: Hierarchical Heterogeneous Graph Learning Framework For Drug-Drug Interaction Prediction, Ran Zhang, Xuezhi Wang, Sheng Wang, Kunpeng Liu, Yuanchun Zhou, Pengfei Wang

Computer Science Faculty Publications and Presentations

Accurately predicting Drug-Drug Interactions (DDIs) is critical to designing effective drug combination therapies. Recently, Artificial Intelligence (AI)-powered DDI prediction approaches have emerged as a new paradigm. However, most existing methods oversimplify the complex hierarchical structure within molecules and overlook the multi-source heterogeneous information external to molecules, limiting their modeling and predictive capabilities. To address this, we propose a Hierarchical Heterogeneous graph learning framework for DDI prediction, namely H2D. H2D employs an internal-toexternal, local-to-global hierarchical perspective, exploiting intramolecular multi-granularity structures and inter-molecular biomedical interactions to mutually enhance across hierarchical levels. Extensive experimental results demonstrate H2D’s effectiveness on three …

Exploring The Radical Potential Of Queer Azn And Pasifika Crt For Clinical Social Work Praxis, Antonia R. G. Alvarez, Gita R. Mehrotra, Sameena Azhar, Anne S. J. Farina, Alma M. Ouanesisouk Trinidad

School of Social Work Faculty Publications and Presentations

In the wake of the COVID-19 pandemic, the crisis in Palestine, and the continued rise in hate crimes against Asian American and Pacific Islander (AAPI) communities, clinical social work praxis centering on the intersectional identities of queer and transgender AAPI communities has never been more vital. Through the visioning of an approach that addresses these intersecting identities and our own experiences with racism, cisheterosexism, and transphobia, we propose a theoretical framework, Queer AZN and Pasifika Critical Race Theory (CRT), for clinical social work praxis. Specifically, we describe six tenets of a Queer AZN and Pasifika CRT approach, which include (1) …

On Localization Of Eigenfunctions Of The Magnetic Laplacian, Jeffrey S. Ovall, Hadrian Quan, Robyn Reid, Stefan Steinerberger

Mathematics and Statistics Faculty Publications and Presentations

Let Ω ⊂ ℝd and consider the magnetic Laplace operator given by H(A) = (–i∇ – A(x))2, where A : Ω → ℝd, subject to Dirichlet boundary conditions. For certain vector fields A, this operator can have eigenfunctions, H(A)ψ = λψ, that are highly localized in a small region of Ω. The main goal of this paper is to show that if |ψ| assumes its maximum at x0 ∈ Ω, then A behaves 'almost' like a conservative vector field in a -neighborhood of x0 in a precise sense. In particular, we expect localization in regions where |curl A| is small. …

Bht-Qaoa: The Generalization Of Quantum Approximate Optimization Algorithm To Solve Arbitrary Boolean Problems As Hamiltonians, Ali Al-Bayaty, Marek Perkowski

Electrical and Computer Engineering Faculty Publications and Presentations

A new methodology is introduced to solve classical Boolean problems as Hamiltonians, using the quantum approximate optimization algorithm (QAOA). This methodology is termed the “Boolean-Hamiltonians Transform for QAOA” (BHT-QAOA). Because a great deal of research and studies are mainly focused on solving combinatorial optimization problems using QAOA, the BHTQAOA adds an additional capability to QAOA to find all optimized approximated solutions for Boolean problems, by transforming such problems from Boolean oracles (in different structures) into Phase oracles, and then into the Hamiltonians of QAOA. From such a transformation, we noticed that the total utilized numbers of qubits and quantum gates …

Stalemate At Port Arthur: William James On War, Vulnerability, And Pluralist Personalism, Bennett Gilbert

History Faculty Publications and Presentations

Using a close reading of a single clause and its context in a section in A Pluralist Universe, we see the moral dangers James saw in traditional ontology, in particular its relation to war and peace. This analysis opens up James’s combining the personalist philosophy of his friend Borden Bowne (and others) with the pluralism he developed late in his career. This leads, further, to reflection of James’s performative philosophizing. Finding in James a theory of “pluralistic personalism” gives us a fresh look at the far-reaching power of his basic concepts of moral philosophy.

Pathos, Fall 2024, Portland State University. Student Publications Board

Pathos

Editor: Adriana Stanzione