Digital Commons Network^™

Reliability And Validity Of The Humboldt Food Addiction Questionnaire, Sarah R. Taylor

Cal Poly Humboldt theses and projects

Current research shows that foods high in sugar, salt, and fat can illicit addictive responses (Pursey, Stanwell, Gearhardt, Collins, & Burrows, 2014). Although measures of overeating pathology exist, only a few are dedicated to food addiction. Two of these measures are the Yale Food Addiction Scale (YFAS; Gearhardt, Corbin, & Brownell, 2009b) and the Eating Behaviors Questionnaire (EBQ; Merlo, Klingman, Malasanos, & Silverstein, 2009). Given the shortage of food addiction measures, the Humboldt Food Addiction Questionnaire (HFAQ) was developed to supplement the need for additional tools. Recruited from both a university and online, 626 participants completed this study. Reliability of …

Public Perceptions Of Homelessness In Humboldt County, John Thomas Krapf

Cal Poly Humboldt theses and projects

Homelessness is a social and political issue of great importance in the United States. For every 10,000 people in the U.S. 17 are experiencing homelessness (Bishop et al. 2017). Despite being a consequence of structural factors in the economy such as a lack of affordable housing and livable wages, the news media often frames the issue as an outcome of individualistic factors such as deviant characteristics, criminality, and personal flaws like drug addiction and mental illness. This study examines public perceptions of homelessness in Humboldt County. To explore this question, I conducted a content analysis of 94 articles on homelessness …

Middle School Natural Disaster Inquiry Unit With Scaffolding, Megan Mali Ireson-Janke

Cal Poly Humboldt theses and projects

Inquiry based learning is complex and challenging. In order to maximize its benefits, it is vital to understand what teaching methods and scaffolds best support different student populations as they are introduced to inquiry-based learning in different contexts. One major challenge of inquiry is organizational: planning the process and organizing the information. This project studied the effectiveness of using a particular scaffolding tool, an advanced organizer template, to support seventh grade science students in an introductory inquiry-based unit. One group of seventh grade students used the advanced organizer template and one group did not. Students chose the type of project …

Rangewide Tidewater Goby Occupancy Survey Using Environmental Dna, Michael Sutter

Cal Poly Humboldt theses and projects

Rangewide monitoring of fish species is critical for determining status and trends in abundance and distribution; however, implementations of large-scale distribution surveys have generally been constrained by time and cost. This study uses environmental DNA (eDNA) to monitor the presence or absence of two endangered tidewater goby species, the northern tidewater goby (Eucyclogobius newberryi) and the southern tidewater goby (Eucyclogobius kristinae), across their combined geographic range that encompasses the entire California coast (1,350 km).A multi-scale occupancy model designed specifically for eDNA methods was used to account for imperfect detection and to estimate true site occupancy. A …

The Effect Of Stride Frequencies On Running Performance At The Velocity Of Vo2max, Boram Lim

Cal Poly Humboldt theses and projects

Running economy(RE) is considered to be a critical factor to improve running performance. Stride frequency(SF) is an important variable for determining RE. The importance of SF has gained more attention in recent years, especially for recreational runners. However, no previous research has investigated the interaction between running performance and SF at the velocity of VO₂max. PURPOSE: To investigate the effect of five different SF variations on running performance until volitional fatigue at the velocity of VO₂max. METHODS: Fourteen male recreational runners (Age = 25.8 ± 4.96 years, Height = 171 ± 6.2cm, Body Mass = 71.9 …

A New Anatomically-Preserved Plant From The Lower Devonian Of Quebec (Canada): Implications For Euphyllophyte Phylogeny And Early Evolution Of Structural Complexity, Selin Toledo

Cal Poly Humboldt theses and projects

An abrupt transition in the fossil record between Early Devonian plants with simple structure and structurally-complex later Devonian plants, has frustrated efforts to understand patterns of phylogeny across the Early/Middle Devonian boundary and the evolution of complex forms. Both these aspects have important implications for lignophyte and seed plant evolution. In the first chapter, I evaluate phylogenetic relationships between the earliest seed plants, Aneurophytales, and Stenokoleales, using comprehensive taxon sampling (28 species, including all relevant permineralized species) and a set of 40 discrete and nine continuous morpho-anatomical characters. Analysis of this dataset supports the three traditional taxonomic groups (seed plants, …

The Ability Of Phyllospadix Spp., A Pair Of Intertidal Foundation Species, To Maintain Biodiversity And Ameliorate Co2 Stress In Rocky Shore Tidepools, Tayler M. Tharaldson

Cal Poly Humboldt theses and projects

Ocean acidification (OA) is often demonstrated to have negative effects on marine organisms, but less is known about whether marine organisms can mediate OA effects. I examined relationships between surfgrass (Phyllospadix spp.), a foundation species and tidepool biodiversity, and its ability to mediate fluctuations in pH and dissolved oxygen (OA; DO) which are stressors in tidepools. I surveyed tidepools in northern California, where I quantified biodiversity, pH, and DO, and related those variables to surfgrass abundance. Laboratory and field experiments manipulating CO₂ and surfgrass presence were done to examine surfgrass effects on day/night pH and DO fluctuations …

Stormwater Management In Philadelphia: The Importance Of Green Stormwater Infrastructure And Community Involvement In Greater Citywide Sustainability, Julie Groff

Cal Poly Humboldt theses and projects

In 2000, the Environmental Protection Agency (EPA) found the City of Philadelphia to be in violation of the Clean Water Act (CWA) of 1972 due to insufficient stormwater infrastructure. In 2011, Philadelphia initiated a 25-year, citywide plan called Green City, Clean Waters to reduce stormwater runoff by implementing green stormwater infrastructure (GSI). The plan promised significant community involvement in the process. I conducted semi-structured interviews with City employees and individuals in the community that have partnered with the City to administer GSI and participant observation of community meetings and used them to explore different neighborhoods’ experiences with Green City, Clean …

The Effects Of Self-Adherent Taping On Peak Inversion Angle And Eversion Moment Upon Landing During A Maximal Vertical Jump And A Depth Drop, Christopher M. Gregoire

Cal Poly Humboldt theses and projects

Ankle injuries are the most common injury in physically active adults with roughly 15% to 30% of all physical activity injuries being ankle injuries. The purpose of this study is to evaluate the effectiveness of a self-adherent ankle taping in reducing peak ankle inversion angle and peak ankle eversion moment upon landing during a max vertical jump and depth drop compared to jumping without a prophylactic ankle stabilizer.

Twelve volunteers participated in testing procedure on two separate days. Day one consisted of orientation while day two consisted of experimental data collection. The participant’s peak inversion angle and eversion moment were …

S100b As A Potential Biomarker For Concussion In Male And Female Collegiate Rugby Athletes, Monica L. Ortiz

Cal Poly Humboldt theses and projects

Sport related concussions are among the top ten most common sport injuries. Substantial and mounting evidence points to extensive short and long term negative consequences from mismanaged sport related concussions. Consequently, researchers have called for better diagnostic concussion tests that are rapid, reliable, sensitive, specific and objective. The purpose of this research was to determine the ability of salivary S100B to detect concussions, predict concussion symptom resolution time, and correlate with changes in neurocognitive performance over the course of one athletic season. A repeated measures of salivary S100B and neurocognitive performance using the ImPACT test and a concussion symptom questionnaire …

The Impact Of An Exercise Intervention On Stereotypical Behaviors In A Child With Autism Spectrum Disorder., Kirsten Nouzovsky

Cal Poly Humboldt theses and projects

The purpose of this study is to investigate the impact of an exercise intervention in reducing stereotypical behaviors in a child with autism spectrum disorder (ASD). A single subject A-B-A-B design with a repeating baseline was used for this investigation. The research design will be implemented to determine if an exercise program (i.e., cycling) impact the frequency of stereotypical behaviors demonstrated by a child with ASD. Results indicate that an exercise intervention has the potential to decrease stereotypical behaviors in a child with ASD. While stereotypical behaviors have always been shown to decrease immediately after physical exercise-based interventions (Kern et …

Predictive Mapping Of Two Nearshore, Demersal Fish Species On Northern California Reefs Using Scuba-Based Visual Surveys And Remote Sensing, Christopher H. Teague

Cal Poly Humboldt theses and projects

California's shallow rocky reefs provide critical habitat for a diverse assemblage of fishes. Effective management strategies for these species require both accurate stock assessments as well as a spatially explicit understanding of the relationship between fishes and characteristics of their habitat. We used a generalized additive model framework to create spatially predictive maps of the abundance and biomass of two demersal fish species prevalent on northern California reefs: lingcod (Ophiodon elongatus) and kelp greenling (Hexagrammos decagrammus). These models incorporated data from SCUBA-based fish and habitat surveys at depths from 12-26 meters as well as measures of …

Impacts On Soils And Residual Trees From Cut-To-Length Thinning Operations In California's Redwood Forests, Kyungrok Hwang

Cal Poly Humboldt theses and projects

In northern California, a cut-to-length (CTL) system was used for the first time to harvest young redwood forests (Sequoia sempervirens (Lamb. ex D. Don) Endl.). However, landowners and public agencies are concerned about the potential negative impacts of CTL logging to soils and residual trees since the extent and amount of CTL impacts are unknown in these forests. This study was designed to (1) determine soil physical property using bulk density (BD) and hydraulic conductivity (HC) (2) examine the characteristics of stand damage after CTL harvesting, and (3) compare the scar size differences between tree growing patterns (individuals vs. …

License To Ill: Slang And Uncertainty As Motivational Accounts For Group Identification, Benny Chu

Cal Poly Humboldt theses and projects

People use verbal communication with other group members as unique social identity markers. Individual’s word choices adjust and change based on the group to which the individual belongs. For example, regional slang allows for people to view themselves as a distinct group represented in a particular geographic location (e.g., Northern Californians and the term “hella”). As a result, when individuals recognize the informal language (slang) of their fellow group members, they should feel confident and included in their group. However, when individuals hear their peers communicate norms by using slang with which they are unfamiliar, it should create …

Words To Cook By: Changing Meanings Of Eating Local In Humboldt County, Nora E. Mounce

Cal Poly Humboldt theses and projects

Humboldt County has an active food system of small, sustainable farms and a vibrant cottage food industry. Yet, this system fails to address the needs of a diverse population that struggles with a disproportionate degree of poor health outcomes. In order to understand the unique challenges facing the region’s food system – and how local government and advocacy groups should begin to address healthy food policy - this research thesis analyzes key texts about food, which illustrate the language and ideologies of eating local in Humboldt County. This research thesis found that the concept of eating local – consuming foodstuffs …

Dynamic Balance Of Experienced And Novice Rock Climbers, Brian G. Shea

Cal Poly Humboldt theses and projects

Climbing requires heavy use of the upper body muscles in the torso and arms to pull the body vertically or traverse horizontally. The upper body profile of climbers has been characterized, however there is little research that has examined the lower body and its contribution to climbing performance. There are studies that have examined postural control while climbing, but no study has evaluated the dynamic balance of the lower extremities in climbers. For this study, lower body dynamic balance was measured using normalized reach distances of the Star Excursion Balance Test (SEBT). Eighteen adult, indoor climbers (n=12) and non-climbers (n=6) …

Low Income Housing Energy Efficiency Improvement Program For The Yurok Tribe Of Northern California, Keivan Branson

Cal Poly Humboldt theses and projects

Housing on the Yurok reservation in California is a major concern for the local Tribal Government. This report details a study of the energy situation for housing of the Yurok Tribe to provide a framework for implementing housing energy efficiency to benefit low-income members of the Tribal community residing in substandard housing. The report briefly details the history of the reservation as it pertains to the current housing situation, as well as the authors personal context of living for 16 years in the reservation town of Klamath, CA. The analysis draws on information obtained from mixed methods, including information collected …

Tracing Writer/Reader Identity In, And In Response To, Queer Latinx Autohistoria-Teorìa, Corrina Wells

Cal Poly Humboldt theses and projects

This project examines how diverse representation changes the discourse around queer latinx identities. This project extends theories of representation that show how a text changes the imaginary of the reader through a two-part methodology. First, through explicating Spit & Passion and A Cup of Water Under My Bed, this project examines how these texts construct a readers’ imaginary. Then, through a corresponding qualitative assessment on readers’ responses to the texts, this project identifies the extent to which the texts change the beliefs and understandings of a small group of students. Articulating an ecology of identity using the texts under examination, …

Characterizing Habitat Preference In Three Nearshore Reef-Associated Fishes Through Collaborative Research, Public Data, And Open Source Software, Ian D. Kelmartin

Cal Poly Humboldt theses and projects

Black rockfish (Sebastes melanops), canary rockfish (S. pinniger), and lingcod (Ophidion elongatus) are important species in Northern California’s nearshore recreational and commercial fisheries. These species are associated with nearshore rocky reefs and are among a suite of species intended to benefit from the establishment of the marine protected area (MPA) network along the Northern California Coast in 2012.

Many aspects of the North Coast’s nearshore ecosystem remain poorly studied, including the spatial distribution and habitat associations of nearshore fish species. This study used data collected from Cape Mendocino State Marine Reserve (SMR), Ten Mile …

Foraging Habitat Of Pileated Woodpeckers In Relation To A Managed Landscape On The Hoopa Valley Reservation, Northwestern California, Dawn Michelle Blake

Cal Poly Humboldt theses and projects

The Pileated woodpecker (Dryocopus pileatus) is associated with older forest stages—larger diameter trees and snags for roosting, nesting and foraging, but they also use managed forests. The Hoopa Reservation is approximately 37,000 ha of mostly forested area with an array of seral stages. The Hoopa Tribe manages timber, and explicitly provides habitat for woodpeckers according to the Tribe’s Forest Management Plan (FMP). No formal study has assessed woodpecker habitat at Hoopa, and habitat has not been well described in this region. I captured eleven woodpeckers and outfitted them with transmitters between 2009 and 2014, and I used resource …

Community-Based Initiatives For Neighborhood And Community Rehabilitation: A Case Study Of The Mission District, San Francisco, California, Francesca Monique Gallardo

Cal Poly Humboldt theses and projects

Through the case study of San Francisco, CA’s Mission District, this research project addresses how community-based affordable housing development is operationalized to rehabilitate communities and neighborhoods experiencing effects of gentrification, mass displacement, and cultural dilution. My goals were to identify how the processes of building a sense of community, trust, and cohesion- rehabilitating and critical to affordable housing development efforts in the Mission District? And, how are nonprofit community development organizations engaging with these processes in collaboration with citizen and community partners? The final objective is to provide evidence-based strategies to assist other at-risk minority communities and neighborhoods in the …

Trace Element And Isotopic Fingerprinting Of Olivine Phenocrysts As Recorders Of Magmatic Processes In The Golden Trout Volcanic Field, Kern Plateau, Ca, Mark E. Szymanski

Cal Poly Humboldt theses and projects

Quaternary mafic volcanism in the western Basin and Range and in the southeastern Sierra Nevada is largely controlled by extensional stresses that promote magma generation through decompression melting of the lithospheric and asthenospheric mantle. Where volcanism occurs in the Sierra Nevada, like at the Golden Trout Volcanic Field GTVF), the eruption rate, number of vents, and eruption volume is an order of magnitude less than at neighboring Basin and Range volcanic fields such as the Big Pine Volcanic Field (BPVF). To determine the factors that cause these differences in adjacent and contemporaneous volcanic fields, I sampled rocks from both fields …

Key Themes For Identifying Trauma Informed Care Best Practices Within Secondary Education, Mathew Dean Bigham

Cal Poly Humboldt theses and projects

Trauma informed care is a growing trend present today in multiple organizations and institutions. There are a variety of methods, theories, and interventions currently being employed that directly relate to trauma and a trauma informed care approach. This study investigates those trauma and trauma informed care practices to better understand which work, under what conditions, and which ones do not. The information gathered will help to provide a foundation for a sustainable trauma informed care system and approach.

This was a qualitative study utilizing interviews and questionnaires to reveal trauma informed care best practices. Five participants with varying degrees of …

The Effects Of Increased Camp Levels On Neuronal Differentiation In Murine Embryonic Stem Cells, And The Creation Of A Crispr-Induced C.1252c>T Point Mutation In The Adcy5 Gene, Elizabeth Zepeda

Cal Poly Humboldt theses and projects

ADCY5-related dyskinesia is a rare movement disorder with early onset in childhood and adolescence. Previous studies linked this disease to various point mutations in the ADCY5 gene. Recent studies show that two of the point mutations cause an increase in cyclic adenosine monophosphate (cAMP) levels. However, it remains unknown how increased levels of cAMP result in the phenotypes associated with this disease. My study examines the effects of increased cAMP levels on neuronal differentiation of mouse embryonic stem cells (mESCs). My experiments demonstrated successful differentiation of mESCs into the dopaminergic neuronal lineage, indicated by the presence of Tuj 1 (a …

Playing And Learning Through Text And Images: Examining Features Of Adolescent Literacy And The Potential Of Graphic Novels As A Supportive Tool, Emily Ann Bushta

Cal Poly Humboldt theses and projects

Graphic novels have been making their way into the classroom steadily during the past two decades. Whether their use is for a pedagogical purpose or pleasure, graphic novels are grabbing the attention of adults and youth alike. As general interest arises surrounding graphic novels, increased scholarship discussing their purpose, structure, and use has appeared across a variety of disciplines. Educators, especially those with younger students, are drawn to the genre. Their interest has produced a growing body of literature; however, these publications often lack quantitative data and typically offer qualitative conclusions about the benefits of graphic novels in classroom contexts. …

Café Para Todos: A Critical Narrative Of Bilingual Education Policy And Practice In Monolingual Spain, Grant A. Skoglund

Cal Poly Humboldt theses and projects

This research presents an ethnographic account of English bilingual programs in public Spanish high schools, exploring not only how such programs currently function in the eyes of stakeholders, but also the significance of bilingualism in the context of an English Imperative perspective. This perspective, shown to be widely adopted by research participants, sees English as a practical necessity in contemporary Spanish society for future success in a globalized world. The objective of this research is to situate bilingual policy and programing within a larger socio-economic and political context and elucidate the attitudes and opinions of key policy actors – students …

The Historical Evaluation And Significance Of The Old Joerger Ranch, Martis Valley, California, Hope Caroline Schear

Cal Poly Humboldt theses and projects

United States history is full of adventure and pioneering but building the regional histories of the nation allows one to dig deeper into what it took to make this country develop socially and economically. In the mid 1800’s California experienced a boom like never before. In 1848, mill workers found gold at Sutter’s Mill in Coloma, California, which led to a huge influx of people and population spike that changed California forever. Once the Gold Rush subsided, agriculture replaced gold in California as a wealth generator. Early settlers discovered that the mild climate of the region allows a wide variety …

Changing Parental Perceptions Of Children With Disabilities Physical Capability In Physical Activity Through A Family Fitness Program, Katelyn R. A. Knupper

Cal Poly Humboldt theses and projects

Children with disabilities are not participating in enough physical activity to meet the recommendations for health benefits. Parental perceptions of their child’s physical competence has a role in influencing physical activity levels. Parental perceptions can be improved through observations of their children in successful physical situations. Therefore, the purpose of this study was to analyze change in parental perceptions of their child’s physical competence after participating in a family-centered physical activity program. Five parents with a child aged six to 21 years with a disability participated in this study. Parental perceptions were assessed with the Perceived Competence Scale for Children, …

Differential Predictors Of Opposition To Same-Sex Marriage And Sexual Prejudice, Latishia E Y Jett-Dias

Cal Poly Humboldt theses and projects

This study investigated attitudes toward same-sex marriage and its beneficiaries from the frameworks of social dominance orientation (SDO) and political conservatism. Unlike past research that focused mainly on sexual prejudice, the current paper explicitly examined both opposition to same-sex marriage and sexual prejudice. Additionally, the current study explored subcomponents of SDO (i.e., opposition to equality [OEQ] and group-based dominance [GBD]). Study One examined relationships and predictive difference between attitudes toward same-sex marriage and its beneficiaries before California legalized same-sex marriage. Study Two addressed attitudes before and recently after California legalized same-sex marriage. OEQ, GBD, and conservatism predicted opposition to same-sex …

Effects Of Collaborative Teaching Evaluation Process On Teacher/Administrator Collegiality, Gary A. Storts Jr.

Cal Poly Humboldt theses and projects

The job of the professional educator is becoming ever more complex. Research has shown that effective teacher evaluation processes and collegial relationships between the teacher and the principal both positively impact student achievement. This study investigates how a collaborative teacher evaluation process effects collegiality between the teacher and the site administrator. Four teachers who had experienced both traditional and collaborative reviews in a small rural school district in Northern California were interviewed to assess the impact that a collaborative evaluation had on their professional relationship with their principal.

The results of this research confirmed that teaching evaluations, however they are …