Theses and Dissertations
https://scholarsbank.uoregon.edu/xmlui/handle/1794/13076
2024-03-29T06:14:14ZSet Class Conceptualizations: A Pedagogical and Theoretical Framework
https://scholarsbank.uoregon.edu/xmlui/handle/1794/29302
Set Class Conceptualizations: A Pedagogical and Theoretical Framework
King, John
Set Class Conceptualizations has two main goals: one, facilitate a student’s learning of set classes; and two, demonstrate multiple ways in which they could benefit from doing so. The intended audience of this dissertation is music professionals and teachers. The main gist of this approach is: one, as the student studies individual set classes, they refine a “bigger picture” of how the set classes relate; two, they relate “new” set classes to ones that they are already familiar with; and three, they let their own musical interests guide them. Part I and the Appendices provides general background information and resources that can act as an aid and inspiration towards the student’s development of their own “bigger picture.” Part II, the heart of this pedagogy, provides tools and resources that are specifically tailored towards the learning of the set classes. Part III provides examples of how an increased knowledge of set classes may enhance various musical endeavors.
2024-03-25T00:00:00ZSystemic Cardiovascular and Carotid Baroreflex Support of Blood Pressure during Recovery from Passive Heat Stress in Young and Older Adults
https://scholarsbank.uoregon.edu/xmlui/handle/1794/29301
Systemic Cardiovascular and Carotid Baroreflex Support of Blood Pressure during Recovery from Passive Heat Stress in Young and Older Adults
Larson, Emily
Much like exercise, heat stress is a profound thermoregulatory, cardiovascular, and autonomic stressor which may promote a distinct post-stress recovery period marked by altered cardiovascular support of blood pressure. For example, several studies have noted a sustained reduction in blood pressure following a single session of heat exposure or “post-heating hypotension,” which is comparable to the sustained hypotension which follows a single session of exercise. While post-heating hypotension, like post-exercise hypotension, may act as a valuable “window of opportunity” in promoting blood pressure management, very little is known about the mechanisms supporting blood pressure regulation during recovery from passive heat stress. Furthermore, as advancing age increases the prevalence of hypertension and alters the thermoregulatory and cardiovascular responses to acute heat stress, it is clinically and scientifically important that investigations into the post-heating recovery period are conducted in both young and older individuals.
This dissertation aimed to characterize and compare the systemic cardiovascular and carotid baroreflex support of blood pressure during recovery from whole-body, passive heating in young and older individuals. Temperature, central, and peripheral hemodynamics were evaluated in sixteen young and nine older individuals at normothermic baseline and during 60 min of passive heating (water perfused suit) and 2 h of normothermic recovery. The neck pressure technique was additionally used to assess carotid baroreflex control of heart rate, the peripheral vasculature, and blood pressure across these time points. Contrary to our hypothesis, a single session of passive heat stress did not promote a sustained reduction in blood pressure in young or older individuals. Furthermore, the systemic cardiovascular and baroreflex responses which accompanied acute heat stress were transient and did not persist beyond 1 h of post-heating recovery in young or older individuals despite continued elevations in core temperature. While these findings do not support the notion that the post-heating recovery period promotes robust and sustained alterations in the cardiovascular support of blood pressure, our novel characterization of the time course of thermal, systemic cardiovascular, and neurovascular recovery from whole-body, passive heat stress in young and older individuals fills important gaps in knowledge as we begin to understand the post-heating recovery profile.
2024-03-25T00:00:00ZCuerpo-Territorio: Embodied Transformative Memory and Cartographies of Healing among GuateMaya Feminist Groups
https://scholarsbank.uoregon.edu/xmlui/handle/1794/29300
Cuerpo-Territorio: Embodied Transformative Memory and Cartographies of Healing among GuateMaya Feminist Groups
Macal Montenegro, Carla
My dissertation presented case studies of two GuateMaya feminist groups that are challenging state-dominant narratives of the Guatemalan 36-year- war (1960-1996) and foregrounding counter-memory with art, Maya cosmovision spirituality, and gendered embodied memory production. The groups also denounced contemporary feminicide cases through the cosmo-political praxis of cuerpo-territorio. Cuerpo-territorio declares the body our first territory and advocates for a communal subject agency. I develop this deeply embodied framework to examine how 8 Tijax and GuateMaya Mujeres en Resistencia-Los Angeles (GMR-LA) challenge the state’s hegemonic memory by actively engaging in embodied transformative memory experiences, or what I describe as healing cartographies. I asserted that such healing cartographies at the scale of the intimate contribute to hemispheric decolonial solidarity. These healing cartographies contradict and actively challenge the Guatemalan state’s claims of what can be remembered or erased when the evidence is embodied and reiterated, told through stories, and brought into being by active remembrance. I use a community-based participatory approach and feminist ethnographic methods to examine and support the transnational affective solidarity connecting GuateMaya women throughout the hemisphere. My research is a political project of unearthing the counter-memory, silences, fear, and intergenerational trauma from the oral and embodied testimonios of GuateMaya women survivors of genocide who are currently involved in collective projects to recover Guatemala’s historical memory. While GuateMaya feminist groups are connected across the United States, Mexico, and Canada, my dissertation focused on the relational testimonios of GuateMaya feminist groups in Guatemala and Los Angeles.
2024-03-25T00:00:00ZEvolution of Developmental Pattern and Larval Form in the Ophiuroids of Oregon and Beyond
https://scholarsbank.uoregon.edu/xmlui/handle/1794/29299
Evolution of Developmental Pattern and Larval Form in the Ophiuroids of Oregon and Beyond
Nakata, Nicole
Despite the ubiquity and known impacts of transitions in developmental pattern in marine invertebrates, many taxa have been insufficiently analyzed. In Chapter II, I report the effects of larval feeding in an undescribed facultative planktotroph, Amphiodia sp. opaque. By culturing larvae with and without food and observing development, I found that larval feeding led to faster development times, greater percent metamorphosis, and larger juveniles able to evade starvation longer than individuals that did not receive food. We compared metrics of early life stages using a series of generalized linear models, and model fitting was determined using Akaike’s Information Criterion (AIC). Scores for each model and test are included as supplementary tables.
In Chapter III, I present a summary of developmental diversity in the ophiuroids of the northeast Pacific Ocean. We used DNA barcoding to identify eighteen species from the plankton of the southern Oregon coast. We found four species with reduced plutei, one with vitellaria, three with pelagic direct development, and ten with planktotrophic ophioplutei (including one followed by a vitellaria).
This diversity of larval forms suggests multiple transitions from feeding to nonfeeding larvae in the Amphiuridae, which I tested for in Chapter IV using comparative phylogenetic analyses. To do so, I constructed a four-gene phylogenetic hypothesis for species with known development pattern in the family Amphiuridae. Single-gene trees were made to check for congruence between loci and the multi-gene dataset and are included as supplementary figures. This analysis inferred a brooding ancestor, an instance of re-acquisition of feeding, and multiple transitions back to nonfeeding larvae. The analysis inferred multiple transitions from brooding to nonfeeding planktonic development via pelagic direct development.
Altogether, this work introduces new examples of the developmental patterns in Ophiuroidea, including an example of facultative planktotrophy, a rare developmental pattern that may represent an evolutionary intermediate between feeding and nonfeeding larvae. We show the effectiveness of DNA barcoding for identifying the early life stages of benthic marine invertebrates. Finally, I found that reconstructed ancestral states of developmental pattern are influenced by tree topology and completeness of the dataset.
This dissertation includes previously published and unpublished co-authored material.
2024-03-25T00:00:00Z