Digital Commons Network^™

Sound Speed Estimation For Distributed Aberration Correction In Laterally Varying Media, Rehman Ali, Trevor M Mitcham, Melanie Singh, Marvin M Doyley, Richard R Bouchard, Jeremy J Dahl, Nebojsa Duric

Faculty, Staff and Student Publications

Spatial variation in sound speed causes aberration in medical ultrasound imaging. Although our previous work has examined aberration correction in the presence of a spatially varying sound speed, practical implementations were limited to layered media due to the sound speed estimation process involved. Unfortunately, most models of layered media do not capture the lateral variations in sound speed that have the greatest aberrative effect on the image. Building upon a Fourier split-step migration technique from geophysics, this work introduces an iterative sound speed estimation and distributed aberration correction technique that can model and correct for aberrations resulting from laterally varying …

Behavior Of Wild Pigs Toward Conspecific Carcasses: Implications For Disease Transmission In A Hot, Semiarid Climate, Samantha Leivers, Tyler Campbell, Michael J. Bodenchuk, John Tomeĉek

United States Department of Agriculture Wildlife Services: Staff Publications

Wild pigs (Sus scrofa) are a prolific, invasive species in the United States of America and act as vectors for many pathogens. An emerging pathogen of concern to the USA is African swine fever (ASF), a deadly viral disease affecting swine that is endemic to Africa and has spread to parts of Europe, Asia, and the Caribbean. ASF affects both wild and domesticated pigs and can be transmitted via several avenues, including interactions between and consumption of dead pigs by their live conspecifics. As wild pigs are considered a serious threat in the transmission of ASF, understanding the …

Why Do Students Attend Stem Clubs, What Do They Get Out Of It, And Where Are They Heading?, Margaret R. Blanchard, Kristie S. Gutierrez, Kylie J. Swanson, Karen M. Collier

Teaching & Learning Faculty Publications

This research investigated what motivated and sustained the involvement of 376 students in culturally relevant, afterschool STEM clubs at four rural, under-resourced schools. A longitudinal, convergent parallel mixed methods research design was used to investigate participants’ participation in and perceptions of the clubs, their motivations to attend, and their future goals, over three years. Situated Expectancy-Value Theory (SEVT) served as a guiding theoretical and analytical framework. Overall, students who attended the clubs were African American (55%), female (56%), and 6th graders (42%), attended approximately half of the clubs (43%), and agreed with quality measures on the STEM Club Survey (M …

Social Construction Of Race Undergirds Racism By Providing Undue Advantages To White People, Disadvantaging Black People And Other People Of Color, And Violating The Human Rights Of All People Of Color, Adjoa A. Aiyetoro

University of Colorado Law Review

No abstract provided.

Slave Law, Race Law, Gabriel J. Chin

University of Colorado Law Review

No abstract provided.

La Descortesía En Los Comentarios Digitales De La Prensa Deportiva. El Tenis, Mucho Más Que Un Juego, David Sánchez-Jiménez

Publications and Research

Comments on sports news published on the digital platforms of newspapers have turned these spaces into forums for debate in which homogeneous social communities are established. The aim of this research is to find out how the participants of these platforms interact in the sports press and what impoliteness strategies they use when evaluating the text of the news and the comments of other users. For this purpose, a qualitative textual analysis of a corpus of 1,000 digital comments produced on the Australian Open 2022 final in four of the most widely distributed Spanish newspapers with the highest national circulation, …

Insights: Qualitative Study To Reevaluate And Redesign Online Learning Self-Guided Tools For English First Year Writers Learning Self-Guided Tools For English First Year Writers, Nandi Prince

Publications and Research

The library faculty teaches approximately three hundred one-time instructional classes per year. This study explored the role of the library instructor in support of serving the needs of first-year writers (FYW) in a discourse community (DC). The English faculty teach English Composition I, the FYW develop their writing skills in a community with shared goals and an established means of communicating. This qualitative study explored: (1) in-depth experiences of the English faculty during library one-time instructional classes; (2) their perceptions of what students need most, in the new curriculum; (3) new findings that would guide the design of digital tools …

The Political Consequences Of Racialized Ethnic Identities, Kimberly Cardenas, Heather Silber Mohamed, Melissa R. Michelson

Political Science

Racial classifications are a social construct with no basis in biology; yet, race is an omnipresent and powerful factor in U.S. politics, shaping electoral boundaries, disbursement of resources, and political alliances (Omi and Winant 1994, Haney López 1994). Race, then, is a malleable construct wielded by varying interests, with racial definitions changing in response to social and political battles. Some new immigrant groups initially classified as not white have been reclassified as white over time, thereby benefitting from associated legal, economic, and sociopolitical privileges. More recently, however, some Latinos have sought recognition as a distinct non-white racial group, in acknowledgment …

Who Farms The Future? Producing The Next Generation Of Agriculturalists, Jordyn L. Mcmaster Neely

Cal Poly Humboldt theses and projects

The proportion of young farmers and ranchers (ages 18-35 years old) within the agricultural workforce has been declining, raising concerns about the sustainability of the food supply. To gather more tools for solving this problem, this thesis research seeks to understand why young people want to work in agriculture by studying how they develop aspirations for an agricultural career. This thesis employed both survey and interview processes to gather data on how participants think about the field of agriculture in the context of both the challenges and opportunities for entry. Participants were asked how wide range of factors contributed to …

Genetic Evaluation Of The Current Distribution And Possible Diffrentations Between Lasiurus Borealis And Lasiurus Frantzii In Southwestern North America, Zeinab M. Haidar

Cal Poly Humboldt theses and projects

Several recent accounts of overlap and historic misidentifications regarding two species of the genus Lasiurus, Western red bat (Lasiurus frantzii) and Eastern red bat (Lasiurus borealis), have cast doubt on our understanding of their distribution, assumed spatial allopatry, and interactions in the United States Southwest. With the use of morphometrics and genetic sequencing, utilizing tissue collected from specimens throughout California and adjoining states, we have reassessed the current distribution, best practices for field identification, and genetic differentiation between both species. Appropriate species classification by region was achieved utilizing mitochondrial DNA, targeting the cytochrome c oxidase …

Participant Perceptions Of Changes In Psychosocial Domains Following Participation In An Adaptive Deep Brain Stimulation Trial, Amanda R Merner, Kristin Kostick-Quenet, Tiffany A Campbell, Michelle T Pham, Clarissa E Sanchez, Laura Torgerson, Jill Robinson, Stacey Pereira, Simon Outram, Barbara A Koenig, Philip A Starr, Aysegul Gunduz, Kelly D Foote, Michael S Okun, Wayne Goodman, Amy L Mcguire, Peter Zuk, Gabriel Lázaro-Muñoz

Faculty, Staff and Students Publications

BACKGROUND: There has been substantial controversy in the neuroethics literature regarding the extent to which deep brain stimulation (DBS) impacts dimensions of personality, mood, and behavior.

OBJECTIVE/HYPOTHESIS: Despite extensive debate in the theoretical literature, there remains a paucity of empirical data available to support or refute claims related to the psychosocial changes following DBS.

METHODS: A mixed-methods approach was used to examine the perspectives of patients who underwent DBS regarding changes to their personality, authenticity, autonomy, risk-taking, and overall quality of life.

RESULTS: Patients (n = 21) who were enrolled in adaptive DBS trials for Parkinson's disease, essential tremor, obsessive-compulsive …

Public Relations Revision, Clas

Executive Actions

No abstract provided.

Ant 2200g, Clas

Executive Actions

No abstract provided.

Ghost Stories, Peggy L. Roske

Archives History Lessons

A compilation of what is known, rumored or fabricated about ghosts at Saint John’s and Saint Ben’s and the basis some of the ghost stories have in historical facts.

2d-3d Facial Image Analysis For Identification Of Facial Features Using Machine Learning Algorithms With Hyper-Parameter Optimization For Forensics Applications, Gangothri Sanil, Krishna Prakash, Srikanth Prabhu, Vinod C. Nayak, Saptarshi Sengupta

Faculty Research, Scholarly, and Creative Activity

Recognizing a face is a remarkable process that humans naturally use. Computer vision has tried to resemble this ability of human vision as a biometric tool to identify humans. Commercial and law enforcement applications are increasingly using face recognition technology to identify people. Currently, it is one of the most sought-after detection methods used in forensics for criminal identification purposes. Owing to similarities in the appearance of certain faces, especially in criminal cases, this problem poses a great challenge in forensic investigation and detection. The novelty of this work lies in the development of a framework for face recognition using …