abstract: The purpose of this study was to investigate the effects of static pedagogical agents (included and excluded) and gamification practice (included and excluded) on vocabulary acquisition and perceptions of cognitive load by junior high students who studied Navajo language via computer-based instructional program. A total of 153 students attending a junior high school in the southwestern United States were the participants for this study. Prior to the beginning of the study, students were randomly assigned to one of four treatment groups who used a Navajo language computer-based program that contained a combination of static pedagogical agent (included and excluded) and gamification practice (included and excluded). There were two criterion measures in this study, a vocabulary acquisition posttest and a survey designed both to measure students’ attitudes toward the program and to measure cognitive load. Anecdotal observations of students’ interactions were also examined. Results indicated that there were no significant differences in posttest scores among treatment conditions; students were, however, generally successful in learning the Navajo vocabulary terms. Participants also reported positive attitudes toward the Navajo language content and gamification practice and expressed a desire to see additional content and games during activities of this type. These findings provide evidence of the impact that computer-based training may have in teaching students an indigenous second language. Furthermore, students seem to enjoy this type of language learning program. Many also indicated that, while static agent was not mentioned, gamification practice may enhance students’ attitudes in such instruction and is an area for future research. Language learning programs could include a variety of gamification practice activities to assist student to learn new vocabulary. Further research is needed to study motivation and cognitive load in Navajo language computer-based training. / Dissertation/Thesis / Doctoral Dissertation Educational Technology 2018

Background: Type 2 diabetes mellitus (T2DM) is a major health concern among Navajo Indians. Native Americans and Alaskan Natives (NA/AN) currently have the highest rates of T2DM in the United States (Indian Health Service, 2016). The rate of diabetes on the Navajo Indian reservation is 22% (Partnersinhealth.org, 2009). Major health concerns for patients with T2DM include cardiovascular complications. Treatment is essential to prevent high-risk complications such as, cardiovascular disease (CVD). Purpose: The purpose of this quality improvement project was to implement a clinical decision support tool (CDST) to increase primary care provider awareness of current American Diabetes Association (ADA) statin therapy guidelines. The first objective was to increase the prescription rates of statin medications by 10%. The second objective of this project was to increase the performance target rate by 10%. Setting: This project was implemented at the Gallup Indian Medical Center (GIMC) Family Medicine Clinic. GIMC is located in Gallup, New Mexico. Participants: Participants included primary care providers, six Medical Doctors, two Nurse Practitioners, and one Physician Assistant. Methods: An evidence based clinical support decision tool (CDST) was generated the ADA statin therapy guidelines. Participants were educated on these practice guidelines and the CDST. The CDST was implemented into the electronic health record (EHR) over a four-week period. The provider used the CDST as a point-of-care guide when prescribing statin therapy to those with T2DM. Results: There was a 0.5% increase in the GPRA performance rating at GIMC as well as a 10% increase in prescribed statin therapy medications. There were 253 newly prescribed statin medications during data collection. Conclusion: While this project did not result in significant improvement of statin therapy GPRA performance ratings, a new EHR tool that providers can use to improve patient care was implemented. One outcome was met, there was a 10% increase in statin medication prescriptions. Further studies and future PDSA cycles will be required for testing the effectiveness of CDSTs.

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Knowledge of the diet of wildlife can aid wildlife biologists to better understand how a species functions within a given ecosystem. Numerous studies have identified various avenues to examine diet for species throughout the world. Wildlife biologists have used diet composition variables as a means to better understand habitat use and aid in the management and conservation of mule deer, Odocoileus hemionus. The complexity of deer diet is still unknown, and local wildlife management agencies could improve conservation strategies with more information regarding the breadth of plant selection in deer diet. Researchers have used non-invasive methods, such as microhistology via fecal analyses, to assess diet composition for mule deer. However, microhistology has several drawbacks that include accuracy in identification and differentiation of plant species, and even genus, as well as determination of accurate proportions of taxa ingested. Genetic techniques, such as next-generation sequencing (NGS), present new avenues for analyzing herbivore diets, especially through the amplification and analyses of specific regions of chloroplast DNA (cpDNA). Additionally, few studies have directly compared microhistological and NGS diet analyses results for any wildlife species. My objectives were to compare diet composition results of both microhistological and NGS diet analyses through estimating diet richness, taxonomic resolution, percent diet, and frequency of occurrence of plant taxa across samples. Mule deer fecal samples were collected on the Navajo Nation from summer and winter ranges of two distinct mule deer populations, Chuska and Carrizo. I found far greater richness and resolution from NGS of plant taxa through the identification of a greater number of species and genera among all populations, within seasons. Upon testing both methods for both populations, no significant agreement was identified for percent of families identified in the diet with both methods, across all samples. I found trends of positive correlation in the occurrence of families between both methods for Carrizo summer diet, as well as among genera and families in Carrizo winter diet. Upon further statistical analyses, I found no significant positive correlation in the occurrence of genera and families identified with both methods among all samples. Genetic techniques may present innovative methods for determining mule deer diet in various ecosystems, and may also be applied to a broad range of herbivore diet studies.

In this thesis the cultural preservation of the Navajo Nation is analyzed through a multicultural and assimilation framework. The Navajo Nation is a case study in this research. A policy analysis is used in this thesis and analyses policies in three proxy categories of culture: education, land ownership, and self-governance. The main policies analyzed in this thesis are the current (federal) policies regarding education, land ownership, and self-governance. Current means the policies that are in place and in effect today. This thesis also analyses past policies in order to create a foundation. It further analyzes these policies to examine the outcomes and implications of the policies on the cultural preservation of the Navajo Nation. Gerd Baumann’s theories on culture, Kymlicka’s liberal multiculturalism, Margalit and Halbertal’s communitarian multiculturalism, and assimilation are used as the theoretical framework of this thesis. The findings cannot be generalized. Some policies have the outcome that was intended whereas other policies have the opposite outcomes of what was intended in the policy. Thus, multicultural policies do not necessarily have a multicultural outcome, sometimes the outcomes of the policy can have an opposite outcome of what the nature of the policy is.

Geochemistry has been used to determine the provenance and diagenetic history of eolian sandstone deposits. However, the grain size, sorting, cementation, and detrital composition of eolian units can change along dune foreset laminae. The purpose of this study was to test for consistent trends of compositional change along dune foresets. Such trends could increase the quality of geochemical sampling of eolian sandstones and possibly aid in estimating the original height of ancient sand dunes. XRF data was gathered for both major and trace elements from the Pennsylvanian to Permian Weber Sandstone, Early Jurassic Navajo Sandstone, and modern Coral Pink Sand Dunes of southern Utah. Data was plotted using both 2-dimensional scatter plots and 3-dimensional principal components analysis (PCA) plots. The PCA plots proved to be the most informative and suggest that there are no consistent, statistically significant geochemical trends within or between the three units sampled. However, this study found that PCA was able to show significant geochemical differences between the three units sampled, even when they are all dominated by a single mineral (>90% quartz). The Weber Sandstone had the most varied composition, and dunes within the unit could be highly dissimilar to each other. The Navajo Sandstone had less overall geochemical variability than the Weber Sandstone, and individual dunes were similar to each other. The modern Coral Pink Sand Dunes had much less compositional variation than either of the other two units, and dunes in this unit were very similar to each other.

Diné (Navajo) students drop out of high school and postsecondary education at higher than average rates. The purpose of this study was to investigate how Diné students currently enrolled in college describe the factors that supported their pursuit of higher education. Bronfenbrenner’s ecological systems theory was used as a framework and to identify and analyze factors that influence access, enrollment, and participation in higher education. The Diné participants in this study were six students enrolled in postsecondary education at the time of this research, recruited from two university campuses in the Southwestern U.S. Each student participated in a semistructured interview and completed a demographic questionnaire. Open-coding was used to analyze the interviews, and it was observed that factors relating to each of Bronfenbrenner’s five levels of ecological systems theory had an impact on the participants’ access, enrollment, and persistence in postsecondary education. A number of themes emerged that will be useful to stakeholders who work with this population of students. Recommendations are provided that are intended to help these stakeholders retain Diné students at higher rates.

American Indian tribes face the phenomenon known across the world as the brain drain. They invest millions of dollars in educating their members, only to have little return on their investments. Many nation members leave reservations to get postsecondary education but never return, contributing to the brain drain. Those who get education off the reservation and choose to return are the exceptions to this rule. Although there is an abundance of literature regarding the brain drain across the world, there has been little research done with American Indians. In order to begin to understand the brain drain phenomenon this study analyzed unstructured qualitative interviews of 17 Navajo Nation members who left their reservation, obtained a degree and returned to work on the reservation. Themes resulting from the hermeneutic analysis of texts that describe the reason why these individuals returned were (a) Family Support, (b) Cultural Identity, (c) Simple Lifestyle, (d) Community and (e) Reservation Economy. The analysis found that constant, lengthy, and meaningful relationships were motivating factors in drawing participants back to contribute to their reservations. Those principles and teachings in the home of these returnees prompts further research in identifying the reasons they were drawn back to their American Indian communities.

Reservoir heterogeneity plays an important role in oil field economics and completion strategies. We herein characterize the reservoir heterogeneity of the Early Jurassic Navajo Sandstone in the Justensen Flat/Devils Canyon area of the San Rafael Swell, Utah. These outcrops are located approximately 60 kilometers (45 mi) east of the recently discovered Covenant oil field which is located in the central Utah thrust belt exploration play. The reservoir for the Covenant field is the Navajo Sandstone. This study can serve as an outcrop analogue for this developing play and other eolian reservoirs worldwide. There are eight facies within the Navajo Sandstone in the Justensen Flat/Devils Canyon area based on differences in primary and secondary sedimentary structures, sedimentary texture, petrology, porosity/permeability, and other macro-scale features of the outcrop. Three facies were deposited by eolian dunes. These serve as the primary reservoir facies of the Navajo in the Justensen Flat/Devils Canyon area, displaying relatively high porosity and permeability (approximately 28 percent porosity and 100 mD of permeability). Five interdune facies display finer grain size, more abundant cement, and relatively lower porosity and permeability (approximately 18 percent porosity and 29 mD of permeability). Four of the five inderdune facies have variable porosity and permeability or are not laterally extensive (tens of meters). These four facies act as baffles to fluid flow within the reservoir. One interdune facies, the Wavy Algal Matted facies (WAM), displays very low porosity (10 percent) and permeability (0.265 mD) based on 4 samples, and is laterally extensive in the field area (greater than 1 km2). There are nine facies in the Wolverine Federal 17-3 core from the Covenant Field, four of which are tidally influenced. This is unique compare to the Justensen Flat/Devils Canyon outcrop. Tidal influence was apparently present in western Utah but did not have a direct influence on sedimentation 60 kilometers (45 mi) to the east. The Large Trough Cross-stratified (LTC) facies, which serves as the primary reservoir of the Navajo Sandstone, was observed in both outcrop and core. The laterally extensive, low permeability WAM facies was also present in both core and outcrop, suggesting the possibility of reservoir partitioning within oil fields having eolian reservoirs similar to the Navajo Sandstone.

The stated purpose of this study was to facilitate Navajos through a process of determining for themselves what poverty is, what indicators determine well-being, and what factors contribute to the phenomenon of poverty on the Navajo Indian reservation. The study used a Q-Squared Participatory Poverty Assessment to gain a better understanding of how the Navajo culture and Navajo people themselves view and operationalize wealth and poverty. Semi-structured participatory interviews performed with 22 Navajo Indians, in the reservation communities of Chinle, Arizona, and San Juan, New Mexico, discussed and determined what it means to be poor in Navajo households and communities, and defined various levels of well- being on the reservation. The analysis provided themes which comprised four stages of poverty description: definitional, summative, experiential, and derivational. The main findings of the analysis and description process were that (1) wealth and poverty are defined by a combination of non- material assets and non-income material assets, rather than income, and that the most important of these are family and cultural values; (2) based on these established indicators of well-being, the Navajo do not see themselves as poor; (3) the difficulties experienced on the reservation include extrinsic factors in control of the state, while the benefits of reservation living are primarily intrinsic factors at individual levels; (4) there is a generational devaluation of Navajo values occurring on the reservation, where the Navajo consider themselves wealthy on account of their rich cultural heritage, but this decline in cultural values constitutes a "cultural recession" and an increase of own poverty on the reservation; and (5) this cultural devaluation and increase of poverty is caused by factors of instrumental and imperialistic education and globalization.