Digital Commons Network^™

Conservation From The Bottom-Up: Human, Financial, And Natural Capital As Determinants Of Resilient Livelihoods In Kigoma Rural, Tanzania, Yared J. Fubusa

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rhetoric of "community-based conservation" has gained prominence among development specialists and environmentalists, yet such projects are often implemented from the top-down in Africa. This dissertation contends that only a bottom-up approach can foster resilient livelihoods and environmental stewardship.

This study focused on determinants of household resilience within a poverty-stricken agricultural community near Gombe Stream National Park (GSNP) in western Tanzania. The research purpose was to explore: 1) relationships between villagers and GSNP management; 2) how groups and individuals view priority livelihood problems and solutions; 3) various attributes of households; and 4) perceived trends for household resilience and how these are …

Dietary Milk Fat Globule Membrane Reduces The Incidence Of Aberrant Crypt Foci In Fischer-344 Rats And Provides Protections Against Gastrointestinal Stress In Mice Treated With Lipopolysaccharide, Dallin R. Snow

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Milk fat globule membrane surrounds the fat droplets of milk. It is a biopolymer containing primarily membrane glycoproteins and polar lipids which contribute to its properties as a possible neutraceutical. The aims of the studies were to determine if dietary milk fat globule membrane: (1) confers protection against colon carcinogenesis; and (2) promotes gut mucosal integrity while decreasing inflammation compared to diets containing corn oil or anhydrous milk fat.

Aim 1. Three dietary treatments differing only in the fat source were formulated: (1) AIN-76A, corn oil; (2) AIN-76A, anhydrous milk fat; and (3) AIN-76A, 50% milk fat globule membrane, 50% …

Maporal Hantavirus Β-Integrin Utilization And Sensitivity To Favipiravir, Kristin K. Buys

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Hantaviruses are members of the Bunyaviridae family of viruses. Pathogenic hantaviruses are the etiologic agents of hemorrhagic fever with renal syndrome (HFRS), a disease principally endemic in the Old World, and hantavirus pulmonary syndrome (HPS), a disease primarily restricted to the Americas. Maporal virus (MPRLV), a recently isolated hantavirus, has been found to cause disease in hamsters that resembles HPS in humans. However, the virus has not been linked to human cases of HPS. Considerable evidence suggests that β-integrin usage mediating infection may serve to distinguish hantaviruses pathogenic to humans from nonpathogenic, but this receptor usage pattern information is not …

Examining The Effectiveness And Efficiency Of Two Delivery Models To Teach Children Abduction Prevention Skills, Kimberly E. Seckinger-Bancroft

Dissertations

Nearly all children receive abduction prevention training. Most traditional education programs increase the learner's knowledge, but often fail to produce concomitant behavior change. Behavioral Skills Training (BST) is a multicomponent, behavior-based training strategy with empirical support demonstrating its effectiveness in teaching children safety skills, behavioral generalization and maintenance over time. BST, however, is restricted by financial, human and time costs and limited resources to implement the training protocol. These factors likely limit widespread adoption of the training model. This study examined the use of computer-based instruction that emphasized active responding and mastery level performance requirements to teach school-aged children abduction …

Kearifan Tradisional Suku Maybrat Dalam Perburuan Satwa Sebagai Penunjang Pelestarian Satwa, Freddy Pattiselanno, George Mentansan

Makara Human Behavior Studies in Asia

Widlife management as food resources in the tropical areas is very rarely done. Traditional wisdom as an aspect that plays an important role in wildlife sustainability still put into practice by certain tribals. Study on traditional wisdom of Maybrat ethnic group was done to observe the practice of traditional wisdom create important impact to the effort of wildlife sustainability in Sorong Selatan Regency. The results indicate that traditional wisdom practice such as the use of hunting tools, places for hunting and wildlife hunted that indirectly give positive impact in order to support wildlife sustainability in Sorong Selatan.

Recovery Of An Endangered Provision: Untangling And Revising Critical Habitat Under The Endangered Species Act, Kalyani Robbins

Buffalo Law Review

No abstract provided.

Jerome Frank And The Modern Mind, Charles L. Barzun

Buffalo Law Review

No abstract provided.

Computational Analysis For Improved Design Of An Sae Baja Frame Structure, Nagurbabu Noorbhasha

UNLV Theses, Dissertations, Professional Papers, and Capstones

Baja SAE is an intercollegiate competition to design, fabricate, and race a small, single passenger, off-road vehicle powered by a 10 HP Briggs & Stratton 4-Stroke gasoline engine. All Baja SAE vehicles for the competition are powered by a small engine, thus large part of vehicle performance depends on the acceleration and maneuverability of the vehicle which is proportional to the weight of the chassis and rollcage. As weight is critical to achieve the greater performance of the vehicle, a balance must be found between the strength and weight of the rollcage to ensure the safety of the driver.

The …

Design Standards Within Constructed Wetlands For The Reduction Of Mosquito Populations In Clark County, Nevada, Phillip C. Bondurant

UNLV Theses, Dissertations, Professional Papers, and Capstones

Wetlands are considered one of the most productive ecosystems in the world and provide many benefits to the environment. However, the slow moving and sometimes stagnant water created by the vegetation in the wetland creates an ideal environment for the proliferation of mosquitoes. Mosquitoes are the most important insect disease vector worldwide. The presence of mosquitoes within wetlands increases the risk of disease transmission among workers and visitors creating a public health concern. Effective design standards aimed at reducing mosquito breeding habitat should be implemented during the construction and planning phase of wetland development to effectively reduce the mosquito populations. …

Predictors Of Recall And Reading Time For Seductive And Nonseductive Text Segments, Ivan V. Ivanov

UNLV Theses, Dissertations, Professional Papers, and Capstones

This correlational study explored how concreteness, relevance, importance, and interestingness related to the recall of seductive details and base text, while controlling for text coherence, and student background knowledge. Previous research has provided evidence for the significant relationship between these variables and the seductive details effect in particular and text recall in general. However, this is the first study to consider all these variables simultaneously. A group of 68 undergraduates read an expository text on lightning formation, performed an immediate test on free recall, and rated each text sentence for concreteness, relevance, importance, and interestingness. A simple regression analysis revealed …

Vertical Transmission Of West Nile Virus In Culex Spp. Mosquitoes Of Clark County, Nevada, Vivek K. Raman

UNLV Theses, Dissertations, Professional Papers, and Capstones

West Nile Virus (WNV) is an RNA arbovirus that cycles between mosquitoes and birds, but also infects and causes disease in humans, horses and other vertebrate species. Although most infections are asymptomatic, WNV has emerged as the most common cause of epidemic meningoencephalitis in North America and the leading cause of arboviral encephalitis in the United States.

Mosquitoes of the genus Culex are the most active vectors of WNV in North America. Approximately 85% of human WNV infections in the United States occur in late summer with a peak number of cases in August and September. Vertical transmission is defined …

Developing Mathematical Content Knowledge For Teaching Elementary School Mathematics, Eva Thanheiser, Christine Browning, Meg Moss, Tad Watanabe, Gina Garza-Kling

Mathematics and Statistics Faculty Publications and Presentations

In this paper the authors present three design principles they use to develop preservice teachers' mathematical content knowledge for teaching in their mathematics content and/or methods courses: (1) building on currently held conceptions, (2) modeling teaching for understanding, (3) focusing on connections between content knowledge and other types of knowledge. The authors share results of individual research projects and teaching approaches focusing on helping preservice elementary teachers develop such knowledge. Specific examples from different content areas (whole number, fractions, angle, and area) are discussed.

Historical Biogeography Of Velvet Ants (Hymenoptera: Mutillidae) In The North American Deserts And Arid Lands, Joseph S. Wilson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

For centuries, scientists have been intrigued by the high amount of biodiversity that is found in the deserts of North America. Recently, several studies have investigated the causes of the high diversity found in desert-dwelling mammals, reptiles, and amphibians. These studies have found that many of these organisms seem to have diversified in response to the same historical events. Little work has been done, however, on diverse desert-dwelling insect groups. In this dissertation, I investigate the patterns of genetic diversity in four groups of nocturnal wasps called velvet ants. I compare the patterns of genetic diversity to the historical events …

Kinetic, Mechanistic, And Structural Investigation Of Features Controlling Stereoselectivity Of (R)- And (S)-Hydroxypropyl Com Dehydrogenases From Xanthobacter Autrophicus Strain Py2, Dariusz Adam Sliwa

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Enantiopure alcohols are valuable intermediates in fine organic synthesis, in particular for preparation of biologically active compounds. The necessity of preparing single enantiomer drugs in an optically pure form has triggered much research, especially in the pharmaceutical industry. The biocatalytical production of chiral alcohols by alcohol dehydrogenase enzymes is characterized by the asymmetric reduction of the corresponding ketones, usually with high degree of stereoselectivity. The commercial value of the enzymes as stereoselective biocatalysts has been a significant driving force in understanding features that control their mechanism of catalysis and stereoselectivity. This work focuses on two enantiocomplementary dehydrogenase enzymes ((R …

Worry And Rumination: Measurement Invariance Across Gender, Janet A. Carter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The present study examined the factor structure of the Penn State Worry Questionnaire (PSWQ), the Student Worry Questionnaire-30 (SWQ-30), the Anxious Thoughts Inventory (AnTI), the Ruminative Responses Scale (RRS), and the Rumination-Reflection Questionnaire (RRQ). The present study also examined the measurement invariance between men (n = 186) and women (n = 316) in a university sample. Different models for each measure were identified through a review of the literature, and the models were examined through confirmatory factor analyses. The best-fitting models for each measure were retained for subsequent model modification to improve fit and for invariance testing across …

Phenotypic And Genetic Characterization Of Wildland Collections Of Western And Searls Prairie Clovers For Rangeland Revegetation In The Western Usa, Kishor Bhattarai

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Western prairie clover [Dalea ornata (Douglas ex Hook.) Eaton & J. Wright] is a perennial legume that occurs in the northern Great Basin, Snake River Basin, and southern Columbia Plateau, whereas Searls prairie clover [Dalea searlsiae (A. Gray) Barneby], also a perennial legume, occurs in the southern Great Basin and surrounding areas. Understanding the genetic and ecotypic variation of these prairie clovers is a prerequisite for developing populations suitable for rangeland revegetation in the western USA. DNA sequences of internal transcribed spacer (ITS/5.8S) and trnK/matK were used to study the phylogeny of these species. The species were distinguished …

The Effects Of Pedagogical Agents On Listening Anxiety And Listening Comprehension In An English As A Foreign Language Context, Young-Ah Ko

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study aimed to explore the impact of pedagogical agents in computer-based listening instruction on EFL students' listening anxiety levels and listening comprehension skills. A total of 66 Korean college students received computer-based listening instruction. Students were randomly assigned to one of three conditions: American agent condition, Korean agent condition, or no-agent condition. Additional data sources were included in the experimental design in order to investigate students' learning experience more thoroughly.

Results indicated that there were no statistical differences in listening anxiety levels and listening comprehension skills between students who worked with the agent and students who worked without the …

Fat Taste Transduction In Mouse Taste Cells: The Role Of Transient Receptor Potential Channel Type M5, Pin Liu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A number of studies have demonstrated the ability of free fatty acids to activate taste cells and elicit behavioral responses consistent with there being a taste of fat. Here I show for the first time that long chain unsaturated free fatty acid, linoleic acid, depolarizes taste cells and elicits a robust intracellular calcium rise via the activation of transient receptor potential channel type M5. The linoleic acid-induced responses depend on G protein-phospholipase C pathway indicative of the involvement of G protein-coupled receptors in the transduction of fatty acids. Mice lacking transient receptor potential channel type M5 exhibit no preference for …

An Investigation Of The Utilization Of Soil Water And Nitrogen Among Diverse Forage Plant Species And Mixtures, Sallee Reynolds

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Species diversity achieved by adding novel functional groups (warm-season grasses and non-leguminous forbs) to pasture land, along with traditional grasses and legumes, could aid in the capture of nutrients and water in pasture systems by offering complementary rooting architecture to aid in water and nitrogen uptake and decrease nitrogen leaching. Because these species may differ from commonly used grasses and legumes in their seasonal pattern of productivity, they could also extend or enhance growing-season productivity. The goal of this project is to better understand the role of plant diversity in 1) nitrogen use and 2) distribution of rooting dynamics and …

Establishment And Aesthetic Value Of Native Grass, Legume, And Forb Species For Grassland Restoration In The Northern Intermountain West, Bridget M. Atkin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Interest in the restoration of landscapes native to the Intermountain West is growing as the value of these arid ecosystems is increasingly recognized. Many landscapes within the Intermountain region have been impacted by grazing, development, recreation, and other human-caused disturbances. The complex relationships within the native plant communities of these arid landscapes need to be well-understood biologically, while considering their aesthetic contribution, if restoration efforts are to succeed. Although the use of ecologically appropriate native species is increasing in popularity, there is discontinuity between aesthetics and meaningful ecological contributions. A series of studies was designed to aid in the restoration …

Ecology And Management Of A High Elevation Southern Range Greater Sage-Grouse Population: Vegetation Manipulation, Early Chick Survival, And Hunter Motivations, Michael R. Guttery

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

My research provided new information concerning the management, ecology, and conservation of greater sage-grouse (Centrocercus urophasianus). I report the results of an experiment using strategic intensive sheep grazing to enhance the quality of greater sage-grouse brood-rearing habitat. Although forb cover, an important component of brood-rearing habitat, responded positively to the grazing treatment, the response of other habitat variables was suppressed because the plots were not protected from domestic and wild herbivores during the years following the treatments. Measurements taken in grazing exclosures confirmed that herbivory by both large and small animals had significant impacts on vegetation. However, despite …

Interclonal Variation Of Primary And Secondary Chemistry In Western Quaking Aspen And Its Influence On Ungulate Selection, Damon A. Winter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Quaking aspen (Populus tremuloides) clones within close proximity to one another can exhibit drastically different levels of browsing by ungulates. The objectives of this study were to (1) determine interclonal differences in plant chemistry between adjacent clones exhibiting different degrees of herbivory which may influence the browsing behavior and patterns of ungulates, and (2) determine if correlation exists in the levels of salicortin and tremulacin between current year's suckers and current year's growth on older trees. This second objective was meant to indicate a protocol for land managers for identifying clones meriting increased protection from herbivory after treatment …

Environmental Influence On Brain, Behavior, And Gene Expression In Drosophila, Xia Wang

UNLV Theses, Dissertations, Professional Papers, and Capstones

Brain development and behavior are sensitive to environmental stimuli. To gain an understanding of how and to what extent environmental variations, particularly with regard to thermal stress and sensory input, affect brain development, function, and genomic activity, in this dissertation, three interrelated studies were conducted in Drosophila melanogaster.

The first study examined the effects of ecologically-relevant hyperthermia stress on development of the Drosophila mushroom body (MB), a conserved sensory integration and associative center in the insect brain. A daily hyperthermic episode throughout larval and pupal development was shown to severely disrupt MB anatomy by reducing intrinsic Kenyon cell neuron …

Learning With Animation And The Illusion Of Understanding, Eugene Sam Paik

UNLV Theses, Dissertations, Professional Papers, and Capstones

A controlled experiment was conducted on the effects of two types of animation - motion and highlighting - on learning. The treatment consisted of a 3.5 minute multimedia presentation that described the workings of a flushing toilet tank. A 2x2 factorial design ({motion, no-motion} x {highlight, no-highlight}) was employed with two dependent measures of learning (retention and transfer). Participants consisted of 65 undergraduates. Highlighting animation had a positive effect on both retention and transfer while motion animation had a negative effect on transfer. No significant interaction was detected between motion and highlighting.

In addition, the experiment tested the illusion of …

Your Presence Is Requested At Suvanto, Maile Chapman

UNLV Theses, Dissertations, Professional Papers, and Capstones

This creative dissertation is a novel set in a fictional private hospital on the southwestern coast of Finland. The main character, Sunny Taylor, is an American nurse whose loneliness and isolation give the novel its distant emotional atmosphere and outsider’s perspective on life in Finland (a densely forested country long perceived as linguistically, culturally, and geographically remote from the rest of Europe). Other main characters include a reserved, chronically ill Finnish woman born before independence from Russia and educated as an architect; an unpleasant expatriate Danish woman who once gave ballroom dance lessons in Finnish cafés; an American obstetrician who …

The Crooked Median, Monica Zarazua

UNLV Theses, Dissertations, Professional Papers, and Capstones

Words search. There are specific points designated by written language, where one might stand for just a little while until the satisfaction of a pattern is revealed. In this collection of stories, one of the forces that serves as a catalyst for this search is the outside gaze. The gaze exerts itself onto characters. The characters may or may not be conscious of it, may or may not welcome it, but they must grapple with it. The gaze projects its needs and desires onto the characters. It seeks to control them, and it desires to be viewed with admiration, lowered …

Silence: Exploring Salvatore Sciarrino’S Style Through L’Opera Per Flauto, Megan R. Lanz

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this paper is to examine the works in Salvatore Sciarrino’s (b. 1947) collection L’opera per flauto written for solo flute and to examine Sciarrino’s compositional style, focusing on his characteristic markings, creative sonorities, and other pertinent facts about pieces in the collection. The first chapter in this paper discusses the value of silence in music and how Sciarrino provides the illusion of perceived silence. Chapter Two discusses elements of Sciarrino’s compositional style and the presence of complex notation. The final chapter provides flutists with a technical guide to the seven pieces in his L’opera per flauto collection. …

A New Approach To Construct Pathway Connected Networks And Its Application In Dose Responsive Gene Expression Profiles Of Rat Liver Regulated By 2,4dnt, Sudhir Chowbina, Youping Deng, Junmei Ai, Xiaogang Wu, Xin Guan, Mitchell S. Wilbanks, Barbara Lynn Escalon, Edward J. Perkins, Jake Y. Chen

Faculty Publications

Background: Military and industrial activities have lead to reported release of 2,4-dinitrotoluene (2,4DNT) into soil, groundwater or surface water. It has been reported that 2,4DNT can induce toxic effects on humans and other organisms. However the mechanism of 2,4DNT induced toxicity is still unclear. Although a series of methods for gene network construction have been developed, few instances of applying such technology to generate pathway connected networks have been reported.

Results: Microarray analyses were conducted using liver tissue of rats collected 24h after exposure to a single oral gavage with one of five concentrations of 2,4DNT. We observed …

Maxwell's Suitcase, Peter Bein

Dissertations, Theses and Capstone Projects (Full IR Collection)

Novel.

Quilts As Visual Texts, Marcia Inzer Bost

Dissertations, Theses and Capstone Projects (Full IR Collection)

I argue that quilts should be considered as visual texts, one to which theories of visual rhetoric and rhetoric in general can be applied. In drawing together the worlds of academia and quilting, I will use a variety of theoretical lens to explore quilts as texts. As a text, quilts contain units of meaning much like words. These units of meaning will be explored in Chapter 2 “Quilt Talks: How Quilts Communicate.” In this chapter I will follow the model of Elsley and propose a semiotics of quilts, one that can then be applied to any quilt. This semiotics is …