Digital Commons Network^™

Dissecting Bayes: Using Influence Measures To Test Normative Use Of Probability Density Information Derived From A Sample, Laurence T. Maloney, Keiji Ota

MODVIS Workshop

Bayesian decision theory (BDT) is used to model human performance in tasks where the decision maker must compensate for uncertainty in order to gain rewards and avoid losses. BDT prescribes how the decision maker can combine available data, prior knowledge, and value to reach a decision maximizing expected winnings. Do human decision makers actually use BDT in making decisions? Researchers typically compare overall human performance (total winnings or overall percent correct) to the predictions of BDT but we cannot conclude that BDT is an adequate model for human performance based on just overall performance. We break BDT down into elementary …

Explaining The Staircase Gelb Illusion, Simultaneous Contrast, And Perceptual Fading Of Stabilized Images With A Neural Model Driven By Fixational Eye Movements, Michael E. Rudd

MODVIS Workshop

A neural model of lightness computation driven by fixational eye movements is described and used to simulate various lightness phenomenon, including the Staircase Gelb illusion and its variants, simultaneous contrast, the Chevreul illusion, and perceptual fading of stabilized images. The model provides a precise account of the lightness matches from several experiments, with an overall error of only 1.5%. In the model, spatial maps of transient ON and OFF cell activations—produced as the eyes traverse the visual scene—are sorted by eye movement direction in visual cortex. At a subsequent processing stage, the activations within these maps are summed across space …

Accounting For The Structure Of Noise In Binocular Rivalry With A Bayesian Sampling Approach, Stella Qian, Jake Spicer, Adam N. Sanborn

MODVIS Workshop

Binocular rivalry occurs when two eyes are presented with incompatible images; observers experience temporal alternations of the two eyes’ images. Such descriptions often mislead readers to assume regular rhythmic rivalry dynamics.

However, rivalry dynamics are noisy: percept durations show high variability. (1) The percept durations follow a gamma distribution. (2) Autocorrelations in the percept durations, although widely known, receive little attention in modelling. (3) Similarly, there is a substantial chance of and individual differences on returning to the same exclusive percept after a mixture percept (van Ee, 2009). These observations are unlikely to be explained by injecting Gaussian noise in …

Information Theory Representation Of Perceptual Processes, Misha Pavel, Yorgos Stratis, Holly B. Jimison, Karen S. Quigley, Deniz Erdogmus

MODVIS Workshop

Human performance in many visual experiments is assessed using probabilities of specific responses to uncertain visual events. Using signal detection theory with specific distributional assumptions, we frequently represent the combination of correct detections with correct negative responses to estimate with measures of discriminability, d', and a response criterion. A shortcoming of this approach involves limitations in generalizing the performance measures across different tasks, especially in experiments with dual or multiple tasks that require comparisons of the performance of simultaneous tasks. Our research aims to develop a framework enabling us to estimate the cognitive resources allocated to different tasks.

We propose …

Algebraic Speed Estimation For Sensorless Induction Motor Control: Insights From An Electric Vehicle Drive Cycle, Jorge Neira-Garcia, Andres Beltran-Pulido, John Cortes-Romero

Purdue University Libraries Open Access Publishing Fund

Induction motors (IMs) must meet high reliability and safety standards in mission-critical applications, such as electric vehicles (EVs), where sensorless control strategies are fundamental. However, sensorless rotor speed estimation demands improvements to overcome filtering distortions, tuning complexities, and sensitivity to IM model mismatch. Algebraic methods offer inherent filtering capabilities and design flexibility to address these challenges without introducing additional dynamics into the control system. The objective of this paper is to provide an algebraic estimation strategy that yields an accurate rotor speed estimate for sensorless IM control. The strategy includes an algebraic estimator with single-parameter tuning and inherent filtering action. …

Pawsitive Training: A Preliminary Investigation Of Animal-Assisted Counseling Competencies In A University-Based Training Program, Elizabeth Kjellstrand Hartwig, Jordan Jalen Evans

People and Animals: The International Journal of Research and Practice

With the proliferation of counselors interested in animal-assisted counseling (AAC), the need for quality AAC training programs is essential. AAC training programs should seek to provide comprehensive training that is specifically targeted to the mental health profession, promotes human and animal wellness, and is aligned with current AAC competencies. The purpose of this study was to identify the efficacy of an AAC training program. This study measured practitioners’ knowledge, skills, and attitudes before and after the training program utilizing a researcher-developed survey instrument based on current AAC competencies. Overall, outcomes identified that practitioners’ knowledge, skills, and attitudes of AAC significantly …

The Acoustics Of Absorbers Comprising A Flexible Perforated Membrane Backed By A Stack Of Granular Material, Zhuang Mo, Guochenhao Song, Huawei Yang, Tongyang Shi, J Stuart Bolton

Publications of the Ray W. Herrick Laboratories

It has been found that when a layer of activated carbon partially fills the space behind a finite, edge-constrained, tensioned impermeable membrane, the absorption peaks due to the modal response of the membrane can be significantly enhanced in the low frequency range. In the present work, the modeling aspects of the latter work have been extended to allow the membrane to be both tensioned and flexurally-stiff, and further, to be micro-perforated, thus expanding the treatment design space. Secondly, the particle layer behind the membrane is modeled by using a two-dimensional finite difference implementation of the Biot poro-elastic theory which then …

Exploring Inventions In Self-Directed Language Learning With Generative Ai: Implementations And Perspectives Of Youtube Content Creators, Belle Li, Chaoran Wang, Curtis J. Bonk, Xiaojing Kou

Department of Curriculum and Instruction Faculty Publications

This study explores the integration of generative AI, specifically ChatGPT, in selfdirected language learning (SDLL) as perceived by YouTube content creators. Through thematic analysis of in-depth interviews with 14 prominent online language educators with related YouTube videos on ChatGPT, the present study investigates: (1) their perceptions of GenAI as a tool for SDLL, (2) strategies that they recommend to effectively utilize ChatGPT for enhancing SDLL, and (3) the guidelines they suggest for fostering SDLL with AI. The findings show that YouTube-based language educators acknowledged ChatGPT as a vital tool for SDLL as it offers availability, versatility, and transformative potential. Besides …

Granular Activated Carbon Sound Absorption Predictions Made Using Measured Material Parameters, Huawei Yang, Tongyang Shi, Guochenhao Song, J Stuart Bolton

Publications of the Ray W. Herrick Laboratories

Granular Activated Carbon (GAC) is hierarchical porosity material that yields better in low frequency sound absorption performance compared with many traditional porous materials due to the sorption effect created by nanometer-scale pores within the particles. In 2017, a triple porosity model accounting for the sorption effect in the micropores was proposed by Venegas et al. In the proposed model, some of input parameters (i.e., mesopore size and micropore effective diffusion coefficient) were fitted by matching the model to measured the surface impedance of a GAC stack; however, some fitted values are questionable from an inorganic material perspective. In the present …

Second Reaction: The Arrival, Cassie Cloninger

First Opinions, Second Reactions

No abstract provided.

First Opinion: The Arrival, Natalya Stepanova

First Opinions, Second Reactions

No abstract provided.

Second Reaction: Isla To Island, Skylar Buckmaster Edgerton

First Opinions, Second Reactions

No abstract provided.

First Opinion: Isla To Island, Sarah Vander Zanden

First Opinions, Second Reactions

No abstract provided.

Second Reaction: The Only Child, Rebecca L. Knapp

First Opinions, Second Reactions

No abstract provided.

First Opinion: The Only Child, Natalya Stepanova

First Opinions, Second Reactions

No abstract provided.

Second Reaction: Letters To A Prisoner, Polly Parkinson

First Opinions, Second Reactions

No abstract provided.

First Opinion: Letters To A Prisoner, Kristen Friesen

First Opinions, Second Reactions

No abstract provided.

Second Reaction: Small Things, Erin K. West

First Opinions, Second Reactions

No abstract provided.

First Opinion: Rebuilding Resilience: A Child’S Journey Through “Small Things”, Amanda Deliman

First Opinions, Second Reactions

No abstract provided.

Editorial: Wordless Graphic Novels: The Power Of Silence Beyond Words Across Themes, Rong Zhang

First Opinions, Second Reactions

No abstract provided.

The Mechanism By Which Thermal Coupling Leads To An Asymptotic Maldistribution Stability Boundary For Flow Boiling In Parallel Microchannels, Md Emadur Rahman, Justin A. Weibel

CTRC Research Publications

Phase change heat transfer processes are attractive for the efficient thermal management of advanced semiconductor devices, with flow boiling in parallel microchannel heat sinks being one promising solution. However, there are several implementation challenges associated with two-phase flow in parallel microchannels, particularly flow maldistribution, which can adversely affect performance and reliability. Two-phase flow models can be useful in predicting and understanding the instability mechanisms that leads to maldistribution, such that parametric performance trends and safe regions of operation can be identified. Channel-to-channel thermal coupling has been shown to alleviate maldistribution, but it is not yet understood why this effect is …

Pso Scoring Instruction Guide, Adrian Gentry, Tiantian Li, Eric Holloway, Kerrie A. Douglas, Julie P. Martin

School of Engineering Education Working Papers

This document is a scoring guide to assist higher-education administrators, faculty, and researchers who wish to use the Professional Skills Opportunities instrument (PSO). There are four aspects, or factors, that the PSO is intended to measure relative to engineering undergraduate students’ opportunities to practice professional skills and an overall PSO score. Detailed scoring instructions are provided. The PSO was developed to assess students’ opportunities to develop and practice a range of professional skills. Utilizing a rigorous instrument development process, the PSO was shown to be a tool that can reliably and validly be used to assess engineering undergraduate students' professional …

Centerless? Making Sense Of Disruptions In The Graduate Writing Center, Shannon Mcclellan Brooks

The Writing Center Journal

This critical self-reflection is not a success story; rather, it is an effort of decolonial thinking that reckons with the idea, experience, and practice of centerlessness during pandemic-induced online transitions and operations in a graduate writing center (GWC). By tracing the contours of a series of interlocking disruptions the author and her graduate writing center community experienced during COVID-19, this article brings into sharp focus present colonial legacies inhibiting effective developments, moves, and adaptations to the GWC physical center space and praxis. Through retrospectively following pandemic-induced disruptions to her center, the author critically engages how epistemologies of coloniality and modernity …

Reflexiones Sobre La Construcción De Espacios Bilingües: Los Centros De Escritura Como Puentes De Diálogo Académico En Torno A La Escritura Y A La Cultura, Andrea Salamanca Mesa, Ana Sofía Ramírez Viancha

The Writing Center Journal

This article reflects on the creation of bilingual spaces, focusing on writing centers as facilitators of academic dialogue regarding academic writing and culture. The writing centers of Pontifical Javeriana University and Florida International University jointly explore how these centers can serve as bridges to promote effective communication and cultural exchange in educational environments where different languages coexist. The analysis addresses the significance of these spaces in fostering linguistic diversity and the impact on academic development. Este artículo reflexiona sobre la creación de espacios bilingües, centrándose en los Centros de Escritura como facilitadores del diálogo académico en torno a la escritura …

Front Matter

The Writing Center Journal

Front matter for The Writing Center Journal 42:1 (2024).

Decolonizing Writing Centers: An Introduction, Glenn Hutchinson, Andrea Torres Perdigón

The Writing Center Journal

Guest editors' introduction to The Writing Center Journal 42.1 (2024).

Re/Searching (For) Hope: Archives And (Decolonizing) Archival Impressions, Romeo Garcia

The Writing Center Journal

On archives and archival impressions, this essay extends archival research to the elsewhere and otherwise. The essay asks, how do we reposition the contents of archives so that we can position ourselves in relation to it otherwise? It puts forward a theory of (decolonizing) archival impressions.

Decolonizing Tutor And Writing Center Administrative Labor: An Autoethnography Of A South Asian Writing Center’S Personnel, Saurabh Anand

The Writing Center Journal

This piece informs my journey of thinking and contextualizing the validity of autoethnography as a decolonial qualitative research method in writing center scholarship. This piece provides the lilt of everyday writing center initiatives, labor, and workings using five email exchanges as data depicting my interactions with various writing center stakeholders as a transnational writing center studies student-tutor, administrator, and doctoral student from South Asia, specifically India. This piece also argues how I used my experiences as one of a writing center’s personnel as a tool of empowerment in my liminal position in my writing center and elaborates on those experiences, …

Beyond Accommodations: Imagination, Decolonization, And The Cripping Of Writing Center Work, Karen Moroski-Rigney

The Writing Center Journal

This article examines connections among disability, colonization, university policies, and writing center work in North America. By positing that university policies have long mimicked medical and scientific processes for creating—and then discriminating against—perceived categories of disability, this article makes interventions into traditional writing center practices and pedagogies without dismissing the spirit with which these aspects of our field came to be. The article has several central claims:

• Disability has been constructed by nondisabled entities (including doctors, scientists, and institutions).
  
  
• Disability’s “drift” and myriad forms act as both specter and insidious insurance against progress or inclusive design.
  
  
• Writing center scholarship has …

Back Matter

The Writing Center Journal

Back Matter for Writing Center Journal 41.3. Contains a Call for Nominations for the 2024 Muriel Harris Outstanding Service Award.