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Brigham Young University

2015

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Facing A Changing World: Thermal Physiology Of American Pikas (Ochotona Princeps), Hans W. Otto, James A. Wilson, Erik A. Beever Dec 2015

Facing A Changing World: Thermal Physiology Of American Pikas (Ochotona Princeps), Hans W. Otto, James A. Wilson, Erik A. Beever

Western North American Naturalist

American pikas (Ochotona princeps) are of concern with respect to warming montane temperatures; however, little information exists regarding their physiological ability to adapt to warming temperatures. Previous studies have shown that pikas have high metabolism and low thermal conductance, which allow survival during cold winters. It has been hypothesized that these characteristics may be detrimental, given the recent warming trends observed in montane ecosystems. We examined resting metabolic rate, surface activity, and den and ambient temperatures (Ta) of pikas in late summer (August 2011 and 2012) at 2 locations in the Rocky Mountains. Resting metabolic rate was calculated …


Production And Nutrient Content Of Two Shrub Species Related To Fire In Central Idaho, James M. Peek Dec 2015

Production And Nutrient Content Of Two Shrub Species Related To Fire In Central Idaho, James M. Peek

Western North American Naturalist

Nutrient content and weight of current year’s growth of Cercocarpus ledifolius Nuttall and Physocarpus malvaceus (Greene) Kuntze in central Idaho were obtained during early July in the years 1987–2007. The purpose of this work was to determine whether there was significant variation between years and whether mean monthly temperatures and total monthly precipitation could predict the variation. A wildfire in August 2000 causedP. malvaceus to vigorously resprout. Significant differences between years occurred for all nutrients for both species. October temperatures best predicted weight of current year’s growth in C. ledifolius, whereas prediction equations for nutrients involved spring temperatures and …


Using Detection Dogs And Rspf Models To Assess Habitat Suitability For Bears In Greater Yellowstone, Jon P. Beckmann, Lisette P. Waits, Aimee Hurt, Alice Whitelaw, Scott Bergen Dec 2015

Using Detection Dogs And Rspf Models To Assess Habitat Suitability For Bears In Greater Yellowstone, Jon P. Beckmann, Lisette P. Waits, Aimee Hurt, Alice Whitelaw, Scott Bergen

Western North American Naturalist

In the northern U.S. Rockies, including the Greater Yellowstone Ecosystem (GYE), connectivity is a concern because large carnivores have difficulties dispersing successfully between protected areas. One area of high conservation value because of its importance for connecting the GYE to wilderness areas of central Idaho is the Centennial Mountains and surrounding valleys (2500 km2) along the Idaho–Montana border just west of Yellowstone National Park. The current expansion of grizzly bears (Ursus arctos) and other large carnivore populations outside protected areas of Yellowstone National Park and Grand Teton National Park has placed a greater emphasis on potential linkage zones …


Phenetic Analyses And Revised Classification Of The Ptelea Trifoliata Complex (Rutaceae), Erin Skornia, Muxi Yang, Wendy L. Applequist Dec 2015

Phenetic Analyses And Revised Classification Of The Ptelea Trifoliata Complex (Rutaceae), Erin Skornia, Muxi Yang, Wendy L. Applequist

Western North American Naturalist

The current classification of Ptelea divides the widespread and highly variable Ptelea trifoliata L. into 5 subspecies and 11 varieties, while additionally terming many specimens “intermediate.” Although there are visually observable differences among regional variants, principal component analyses of quantitative characters failed to separate subspecies or to even incompletely separate most varieties within subspecies. Some recognized subgroups are also not well distinguished by discontinuous qualitative characters. Where multiple varieties appear to be part of a single continuum of variation or are extremely similar, it is suggested that a reduction in the number of infraspecific taxa would improve the utility of …


Maternity Roost Selection By Fringed Myotis In Colorado, Mark A. Hayes, Rick A. Adams Dec 2015

Maternity Roost Selection By Fringed Myotis In Colorado, Mark A. Hayes, Rick A. Adams

Western North American Naturalist

Fringed myotis (Myotis thysanodes) is a bat species of conservation concern in western North America that may be impacted by increased recreational activity near roost sites, changes in water resource availability caused by increased urban and agricultural water use, and anthropogenic climate change. Our purpose was to describe and model maternity roost use by fringed myotis in Colorado. We compared differences between roosts occupied by maternal fringed myotis and randomly selected potential roosting locations that were not known to be occupied by this species during the maternity period. We evaluated the strength of evidence for competing hypotheses on …


Black-Tailed And White-Tailed Jackrabbits In The American West: History, Ecology, Ecological Significance, And Survey Methods, Matthew T. Simes, Kathleen M. Longshore, Kenneth E. Nussear, Greg L. Beatty, David E. Brown, Todd C. Esque Dec 2015

Black-Tailed And White-Tailed Jackrabbits In The American West: History, Ecology, Ecological Significance, And Survey Methods, Matthew T. Simes, Kathleen M. Longshore, Kenneth E. Nussear, Greg L. Beatty, David E. Brown, Todd C. Esque

Western North American Naturalist

Across the western United States, Leporidae are the most important prey item in the diet of Golden Eagles (Aquila chrysaetos). Leporids inhabiting the western United States include black-tailed (Lepus californicus) and white-tailed jackrabbits (Lepus townsendii) and various species of cottontail rabbit (Sylvilagus spp.). Jackrabbits (Lepus spp.) are particularly important components of the ecological and economic landscape of western North America because their abundance influences the reproductive success and population trends of predators such as coyotes (Canis latrans), bobcats (Lynx rufus), and a number of raptor species. …


Front Matter, Vol. 75 No. 4 Dec 2015

Front Matter, Vol. 75 No. 4

Western North American Naturalist

No abstract provided.


A Herpetological Inventory Of Naval Air Station Fallon, Churchill County, Nevada, Jonathan P. Rose, Oliver J. Miano, Gary R. Cottle, Robert E. Lovich, Robert L. Palmer, Brian D. Todd Dec 2015

A Herpetological Inventory Of Naval Air Station Fallon, Churchill County, Nevada, Jonathan P. Rose, Oliver J. Miano, Gary R. Cottle, Robert E. Lovich, Robert L. Palmer, Brian D. Todd

Western North American Naturalist

Much of the western United States is managed by state and federal agencies for multiple uses, including recreation, grazing, extraction, and defense. Biological inventories are integral to proper management and conservation of biodiversity on these lands. We surveyed for amphibians and reptiles occurring on Naval Air Station Fallon (NAS Fallon), Nevada, USA, using a variety of methods. We documented the presence of a majority of the amphibian and reptile species native to this region of the Great Basin. We found 5 species on NAS Fallon that are listed as Species of Conservation Priority by the Nevada Department of Wildlife: the …


Gender And Attitudes About Mental Health Help Seeking: Results From National Data, Douglas Wendt, Kevin Shafer Dec 2015

Gender And Attitudes About Mental Health Help Seeking: Results From National Data, Douglas Wendt, Kevin Shafer

Faculty Publications

Men often express less emotion than women do, are hesitant to express weakness, and seek professional help much less frequently than do their female counterparts. The lack of help seeking is common across characteristics such as age, race, ethnicity, and nationality. Authors used data from the 2006 General Social Surveys mental health module to suggest that the gender gap in help seeking may be rooted in attitudes regarding help-seeking behaviors generally. Using structural equation modeling, we linked vignette type (depression and schizophrenia) to the endorsement of help seeking from informal and formal sources. Men showed similar support for informal help …


Evaluation Of Vaccination Policies Among Outpatient Oncology Clinics In Utah: A Pilot Study, Karlen Beth Luthy, Sarah L. Stocksdale, Janelle L B Macintosh, Lacey M. Eden, Renea L. Beckstrand, Katherine Edmonds Dec 2015

Evaluation Of Vaccination Policies Among Outpatient Oncology Clinics In Utah: A Pilot Study, Karlen Beth Luthy, Sarah L. Stocksdale, Janelle L B Macintosh, Lacey M. Eden, Renea L. Beckstrand, Katherine Edmonds

Faculty Publications

Background: In Utah, all major hospital facilities have employee vaccination policies. However, the presence of health care worker vaccination policies in the Utah outpatient oncology setting was unknown.

Objectives: The objectives were to identify Utah oncology outpatient employee vaccination policies and to identify what consequences, if any, were present for unvaccinated employees.

Methods: This was a cross-sectional, descriptive study design in which clinic managers from outpatient oncology clinics in Utah were asked, via questionnaire, to describe the clinic’s employee vaccination policy and the consequences for refusing the policy.

Findings: Most vaccination policies applied to employees primarily assigned to work in …


Seeing And Not Believing: A Critique Of Post-Civil War America's Loss Of Faith Through A Spectral Medium, Alan Hickey Dec 2015

Seeing And Not Believing: A Critique Of Post-Civil War America's Loss Of Faith Through A Spectral Medium, Alan Hickey

Criterion: A Journal of Literary Criticism

No abstract provided.


Contributors Page, Criterion: A Journal Of Literary Criticism Dec 2015

Contributors Page, Criterion: A Journal Of Literary Criticism

Criterion: A Journal of Literary Criticism

No abstract provided.


Optical Approach To Resin Formulation For 3d Printed Microfluidics, Hua Gong, Michael Beauchamp, Steven Perry, Adam T. Woolley, Gregory P. Nordin Dec 2015

Optical Approach To Resin Formulation For 3d Printed Microfluidics, Hua Gong, Michael Beauchamp, Steven Perry, Adam T. Woolley, Gregory P. Nordin

Faculty Publications

Microfluidics imposes different requirements on 3D printing compared to many applications because the critical features for microfluidics consist of internal microvoids. Resins for general 3D printing applications, however, are not necessarily formulated to meet the requirements of microfluidics and minimize the size of fabricated voids. In this paper we use an optical approach to guide custom formulation of resins to minimize the cross sectional size of fabricated flow channels as exemplars of such voids. We focus on stereolithgraphy (SL) 3D printing with Digital Light Processing (DLP) based on a micromirror array and use a commercially available 3D printer. We develop …


Resisting The Resistance: The Emancipation Of Students From The Hidden Curriculum Of Commodified Resistant Narratives In Young Adult Dystopian Film Through Open Pedagogical Space And Culture-Jamming, Robert B. Bauer Dec 2015

Resisting The Resistance: The Emancipation Of Students From The Hidden Curriculum Of Commodified Resistant Narratives In Young Adult Dystopian Film Through Open Pedagogical Space And Culture-Jamming, Robert B. Bauer

Theses and Dissertations

Young Adult Dystopian Film exercises an influence over young people of which they are not aware. As part of a structure of domination these films teach students to participate in their own oppression by the capitalist system. The film industry maintains a hidden curriculum like that utilized in school classrooms to conceal the oppression from the masses. One particularly effective means is the portrayal of resistance against oppression in the narratives of the YA Dystopian Film. Young people are drawn to that narrative and end up supporting the structure of domination financially and ideologically. Modes of resistance to this oppression …


Galvanic Corrosion Of Magnesium Coupled To Steel At High Cathode-To-Anode Area Ratios, Dila Ram Banjade Dec 2015

Galvanic Corrosion Of Magnesium Coupled To Steel At High Cathode-To-Anode Area Ratios, Dila Ram Banjade

Theses and Dissertations

In this study, the impact of galvanic coupling of magnesium to steel on the corrosion rate, surface morphology, and surface film formation was investigated. In particular, the role of self-corrosion was quantified as previous studies showed discrepancies between model predictions and experimental results that were likely due to significant self-corrosion. This experimental study examined the corrosion of Mg coupled to steel in 5 wt% NaCl at cathode-to-anode area ratios that ranged from 5 to 27. Results showed that self-corrosion was significant and accounted for, on average, one-third of total corrosion. Moreover, self-corrosion varied with time and cathode size, and was …


Construction Of A 408 Nm Laser System For Use In Ion Interferometry, Lawrence Archibald Dec 2015

Construction Of A 408 Nm Laser System For Use In Ion Interferometry, Lawrence Archibald

Theses and Dissertations

This work reports on the construction of a 408 nm laser system designed to drive stimulated Raman transitions between the F = 4 and F = 5 2 S 1/2 states of 87 Sr + using the 2 P 3/2 state as the intermediate state. This laser system will be used as part of a 87 Sr + ion interferometer. This work also includes a discussion of relevant theory describing the interaction of the ions and laser, along with a calculation of the transition rates as a function of laser power and detuning.


A Corpus-Based Analysis Of Russian Word Order Patterns, Stephanie Kay Billings Dec 2015

A Corpus-Based Analysis Of Russian Word Order Patterns, Stephanie Kay Billings

Theses and Dissertations

Some scholars say that Russian syntax has free word order. However, other researchers claim that the basic word order of Russian is Subject, Verb, Object (SVO). Some researchers also assert that the use of different word orders may be influenced by various factors, including positions of discourse topic and focus, and register (spoken, fiction, academic, non-academic). In addition, corpora have been shown to be useful tools in gathering empirical linguistic data, and modern advances in computing have made corpora freely available and their use widespread. The Russian National Corpus is a large corpus of Russian that is widely used and …


Impact Of Heart-Rate Variability Biofeedback On Major Depression Disorder In Resting-State Fmri, Hiu Wai Caldwell Dec 2015

Impact Of Heart-Rate Variability Biofeedback On Major Depression Disorder In Resting-State Fmri, Hiu Wai Caldwell

Theses and Dissertations

Major depressive disorder (MDD) is one of the most common psychiatric illnesses and causes significant disturbances in daily functioning. Research on heart-rate variability (HRV) biofeedback training suggests that HRV is an efficacious adjunct to psychotherapy in reducing depressive symptoms. The purpose of this study was to examine neurological changes in depressed individuals who were randomized to either a psychotherapy plus HRV biofeedback training or to a treatment as usual group. A control group with no history of depression was also studied. We collected psychological, physiological, and imaging data from 30 participants (10 in an experimental group, 10 in a treatment …


Use Of Personality Profile Assessments In The Construction Industry, Brian Richard Childs Dec 2015

Use Of Personality Profile Assessments In The Construction Industry, Brian Richard Childs

Theses and Dissertations

Various industries are using personality profile assessments as tools to help reduce employee turnover. Employee turnover is a continuing challenge in the construction industry that has negative effects on construction companies. Research found that it was difficult to know if companies in the construction industry are using personality profile assessments as a tool to help reduce employee turnover. After understanding that other industries were using personality profile assessments in their hiring, promoting, team building and leadership development to reduce turnover, it was desired to understand if the construction industry was doing the same. This research performed a survey among the …


Syriac Rhetorical Particles: Variable Second-Position Clitic Placement, Patrick Brendon Pearson Dec 2015

Syriac Rhetorical Particles: Variable Second-Position Clitic Placement, Patrick Brendon Pearson

Theses and Dissertations

Investigation on second-position clitic phenomena has steadily increased since Wackernagel’s (1892) observations. Researchers have applied contemporary clitic typology to various Semitic languages though Syriac has received little attention. This thesis identifies a group of Syriac rhetorical particles and describes their categorization as clitics, versus words or affixes. It establishes each of the Syriac particles as second-position clitics and provides evidence of this conclusion from a state-of-the-art digitized corpus of Syriac literature. Extending previous Syriac analyses, this thesis describes the nature of attachment of these second-position clitics as enclisis to either the first word or the first constituent/phrase of their domain. …


The Role Of Documentary Film In The Emerging Social Entrepreneurial Culture, Karyn Elizabeth Daley Dec 2015

The Role Of Documentary Film In The Emerging Social Entrepreneurial Culture, Karyn Elizabeth Daley

Theses and Dissertations

Considering the current skepticism surrounding the impact and efficacy of nonprofit and nongovernmental organizations, some believe that a unique category of innovator known as the social entrepreneur may be society’s best hope for bringing innovative, scalable, and systemic solutions to bear on the world’s most intractable problems. Social entrepreneurs, as defined by Ashoka, have a unique set of characteristics that determine not only how they move within the world of social change-making but also how they communicate their ideas and mission to the public.

This exploratory study reviewed how social entrepreneurs currently use documentary film and visual media in their …


Tailoring Student Learning: Inquiry-Based Learning In The Elementary Art Classroom, Jeffrey Melvin Cornwall Dec 2015

Tailoring Student Learning: Inquiry-Based Learning In The Elementary Art Classroom, Jeffrey Melvin Cornwall

Theses and Dissertations

This research study explored the role of the elementary art educator in facilitating individualized learning experiences for students in contrast to a standardized culture of education. The methodology of a/r/tography was used to investigate the role of the teacher, as well as artist and researcher, within an inquiry-based art curriculum for a fifth grade class. Inspired by contemporary art practices, students used inquiry to investigate, research and experiment with their ideas around an integrated topic of compare and contrast as found within the fifth grade science and language arts standards. Students created a work of art as a means to …


Audience Participation In Blue Man Group: Success Through Authentic Character, Adaptable Narrative, And Accessible Space, Haley Lauren Flanders Dec 2015

Audience Participation In Blue Man Group: Success Through Authentic Character, Adaptable Narrative, And Accessible Space, Haley Lauren Flanders

Theses and Dissertations

The relationship between performer and spectator is a constant topic in theatre since audiences are essential to any performance. Some contemporary performances strive to blur the line between the two by allowing audiences to participate during the show. Often, audience participation is despised and therefore avoided by spectators and theatre practitioners. However, Blue Man Group thrives on it due to their authentic character, adaptable narrative, and accessible space. Through my examination of the show as an audience member, I theorize that these three elements control the audience's willingness to participate in the production and in turn make the entire experience …


Third Ventricle Width As A Metric For Fast And Efficient Detection Of Atrophy In Traumatic Brain Injury, Christopher Scott Finuf Dec 2015

Third Ventricle Width As A Metric For Fast And Efficient Detection Of Atrophy In Traumatic Brain Injury, Christopher Scott Finuf

Theses and Dissertations

In an average year more than 1.7 million people will experience a traumatic brain injury (TBI) in the United States. It is known that atrophy occurs across a spectrum for TBI patients, ranging from mild to severe. Current conventional magnetic resonance imaging (MRI) methods are inconsistent in detecting this atrophy on the milder end of the spectrum. Also more contemporary imaging tools, although efficient, are too time consuming for clinical applicability. It is for these reasons that a quick and efficient measurement for detecting this atrophy is needed by clinicians. The measuring of third ventricle width had the potential to …


Teacher Participation And Motivation Inprofessional Development, Krystal A. Hill Dec 2015

Teacher Participation And Motivation Inprofessional Development, Krystal A. Hill

Theses and Dissertations

Although professional development is accepted as important for making educational improvements, some have been unsuccessful due to how the teachers choose to participate, and the lack of motivation in teachers to attend or implement the suggested changes. A case study of secondary mathematics teachers in a required professional development is used to look at teachers' motivation and participation during the professional development. This study compared mathematics teachers' motivation to attend with ways of participating in order to determine how these influence a teacher's intent to change. It was found that certain aspects of motivation and participation does influence a teacher's …


Control Of Alternaria Solani Resistance To Boscalid, Fluopyram, And Chlorothalonil, Andrew K. Hollingshead Dec 2015

Control Of Alternaria Solani Resistance To Boscalid, Fluopyram, And Chlorothalonil, Andrew K. Hollingshead

Theses and Dissertations

Alternaria solani, cause of early blight, threatens potato yields. Fungicide resistance has made control of early blight difficult and there are concerns that in-season fungicide use results in resistance to boscalid, fluopyram, and chlorothalonil. Concern of high levels of resistance to boscalid a group 7 fungicide may confer cross-resistance to fungicides of the same group such as fluopyram. From 2014 to 2015, A. solani isolates were collected from field plots treated with boscalid, fluopyram, and chlorothalonil to test resistance levels. Isolates were determined resistant if EC50 values were higher than 5 µg ml-1. Boscalid and chlorothalonil mean EC50 values decreased …


Laboratory Resilient Modulus Measurements Of Aggregate Base Materials In Utah, Kirk David Jackson Dec 2015

Laboratory Resilient Modulus Measurements Of Aggregate Base Materials In Utah, Kirk David Jackson

Theses and Dissertations

The Utah Department of Transportation (UDOT) has fully implemented the Mechanistic-Empirical Pavement Design Guide for pavement design but has been using primarily level-three design inputs obtained from correlations to aggregate base materials developed at the national level. UDOT was interested in investigating correlations between laboratory measurements of resilient modulus, California bearing ratio (CBR), and other material properties specific to base materials commonly used in Utah; therefore, a statewide testing program was needed. The objectives of this research were to 1) determine the resilient modulus of several representative aggregate base materials in Utah and 2) investigate correlations between laboratory measurements of …


Mountain Big Sagebrush (Artemisia Tridentata Ssp Vaseyana) Seed Production, Melissa L. Landeen Dec 2015

Mountain Big Sagebrush (Artemisia Tridentata Ssp Vaseyana) Seed Production, Melissa L. Landeen

Theses and Dissertations

Big sagebrush (Artemisia tridentata Nutt.) is the most widespread and common shrub in the sagebrush biome of western North America. Of the three most common subspecies of big sagebrush (Artemisia tridentata), mountain big sagebrush (ssp. vaseyana; MBS) is the most resilient to disturbance, but still requires favorable climactic conditions and a viable post-fire seedbank for successful unassisted recovery. This study was designed to assess MBS seed production throughout post-fire recovery. We performed 2 pilot studies to develop methods for estimating seed production and plant age. The results of the pilot studies and a space-for-time substitution strategy were used to measure …


Enhanced-Resolution Processing And Applications Of The Ascat Scatterometer, Richard D. Lindsley Dec 2015

Enhanced-Resolution Processing And Applications Of The Ascat Scatterometer, Richard D. Lindsley

Theses and Dissertations

The ASCAT scatterometer measures the Earth surface microwave radar backscatter in order to estimate the near-surface winds over the oceans. While the spatial resolution of the conventional applications is sufficient for many purposes, other geoscience applications benefit from an improved spatial resolution. Specialized algorithms may be applied to the scatterometer data in order to reconstruct the radar backscatter on a high-resolution grid. Image reconstruction requires the spatial response function (SRF) of each measurement, which is not reported with the measurement data. To address this need, I precisely model the SRF incorporating (1) the antenna beam response, (2) the processing performed …


Changes In Acoustic And Kinematic Articulatory Working Space Across Three Intensity Levels, Panika Ellis Palmer Dec 2015

Changes In Acoustic And Kinematic Articulatory Working Space Across Three Intensity Levels, Panika Ellis Palmer

Theses and Dissertations

The purpose of this study was to compare changes in acoustic and kinematic measures of articulation across soft, comfortable, and loud speech conditions. There were 19 participants, 9 male and 10 female, with age ranging from 20 to 34 with a median age of 25. Each participant had electromagnetic sensors glued to their tongue, jaw, and lips. It was anticipated that the acoustic measures would accurately reflect the kinematic measures of speech as articulation changed across the intensity levels. Vowel space area (VSA) and vowel articulation index (VAI) were computed from the three corner vowels, /α, i, u/. Articulatory-acoustic vowel …