Digital Commons Network^™

Reproductive Tactics Of Aphidophagous Lady Beetles: Comparison Of A Native Species And An Invasive Species That Is Displacing It, Yukie Kajita

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Coccinella septempunctata L. (Coleoptera: Coccinellidae) has been introduced to North America in recent decades, raising concerns of adverse impacts on native lady beetles, including the congeneric C. transversoguttata richardsoni (Brown). The central focus of my dissertation is to understand the importance of reproduction, in particular, in promoting invasion of C. septempunctata and its replacement of native lady beetles in alfalfa fields of western North America.

Studies were conducted to compare reproductive tactics of the invasive C. septempunctata and the native C. transversoguttata, by addressing: 1) maximum rate of reproduction of overwintered lady beetles, 2) population dynamics of the invasive …

Diets Of Ladybird Beetles (Coleoptera: Coccinellidae) In Utah Alfalfa Fields, Lynette Nicole Davidson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Aphidophagous lady beetles rely on multiple sources of food in their environment. Alfalfa fields provide both aphids and many alternate foods, such as other arthropod prey, pollen, and fungi. Alfalfa fields (Medicago sativa L.) in Utah have low aphid densities, which may require lady beetles to consume alternative sources of food. Many methods can be used to determine these diets; frass analysis is used here to compare the diets of the introduced species Coccinella septempunctata L. with two native species, C. transversoguttata richardsoni Brown and Hippodamia convergens Guérin-Méneville, that occur in the Utah alfalfa habitat.

In initial laboratory experiments …

Effect Of Processing And Formulation Conditions On Physicochemical Characteristics Of Food Emulsions, Megan Tippetts

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this research was to systematically study the effect of processing conditions on crystallization behavior and destabilization mechanisms of oil-in-water (o/w) emulsions. The effects of oil content (20 and 40 wt %); crystallization temperature (T_c = 10, 5, 0, -5, -10 °C); homogenization conditions, such as high shear (HS), very low pressure homogenization (VLPH), and high pressure homogenization (HPH); and cooling rate (0.2 and 30 °C/min) on both thermal behavior and destabilization mechanisms were analyzed. Docosahexaenoic acid (DHA) was added to VLPH emulsions and its effect on the physicochemical and oxidative stabilities and flavor was studied.

Emulsions …

Cause And Prevention Of Liver Off-Flavor In Five Beef Chuck Muscles, Ranjeeta Wadhwani

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Liver off-flavor is a sporadic problem that limits the consumer acceptance of several beef chuck muscles, including the infraspinatus (flat iron steak). Residual blood hemoglobin is known to contribute to liver off-flavor development. This study was conducted to evaluate factors affecting development of liver off-flavor after cooking of beef chuck (shoulder) muscles. The study was conducted in three parts.

The objective of part 1 was to determine effects of muscle (infraspinatus, longissimus dorsi, serratus ventralis, supraspinatus, teres major) and processing (with or w/o carcass electrical stimulation) on residual blood hemoglobin content and total pigment content of raw muscle …

Treatment Of Saltcedar (Tamarix Spp.): Economics And Feasibility, Christopher L. Thompson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The invasive species Saltcedar is affecting water and land resources throughout the western states of America. Because of great water use capabilities and other ecosystem detriments, Saltcedar has been targeted for treatment.

For successful management of Saltcedar, individual landowners need to be aware of the costs and benefits of treating Saltcedar. Eleven of the most commonly reported treatment methods were evaluated for firm level economic feasibility. Evaluated on the basis of treatment cost, treatment effectiveness, Saltcedar water-use, and re-vegetation water-use, a production plan of ten years was created for each treatment method. Some treatment methods required re-treatment and were evaluated …

A Critical Analysis Of The Cooperatives Working Together Program, Spencer N. Parkinson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study analyzes the effectiveness of the Cooperatives Working Together (CWT) program. This program is believed to have improved the farm-level price of milk since it began in July 2003. To date, no publicly available analysis addressing this question has been conducted. Total milk removed by the program was determined and expressed as a percentage of total milk produced nationally during the same time frame. Elasticity measures from prior studies were adapted to determine the impact of the program. This analysis suggests the program has had a significantly positive effect on the price of milk. Issues dealing with future action …

Are Delay Discounting, Probability Discounting, Time Perception, And Time Perspective Related? A Cross-Cultural Study Among Latino And White American Students, Ana Amelia L. Baumann Neves

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The present study aimed to evaluate (a) the extent to which different impulsivity measures would be related to each other and to a risk taking measure, (b) the extent to which impulsivity, risk taking, time perception and time perspective are related to each other, and (c) the extent to which these processes differ in Latino and White American students. Experiment I was conducted at Utah State University. One hundred and forty-three participants were exposed to the delay discounting, probability discounting and temporal bisection procedures, and answered the Barratt Impulsiveness Scale (BIS-11) and the Zimbardo Time Perspective Inventory (ZTPI). Results showed …

Preliminary Perspectives On The Health Needs Of Pastoral Women On The Borana Plateau Using Participatory Approaches, D. Layne Coppock, Seyoum Tezera, Solomon Desta

Environment and Society Faculty Publications

Since 2000, the PARIMA project has conducted participatory research and outreach among pastoralists in southern Ethiopia. This has led to notable achievements in terms of forming collective-action groups dominated by women, stimulation of sustainable micro-finance and micro-enterprise activities, and improving linkages of pastoral producers to livestock markets. Despite such gains, there are many other challenges to be addressed. One is poor human health. PARIMA researchers used participatory and qualitative methods to conduct a preliminary assessment of women’s health problems among members of six, well-established collective-action groups from the Borana and Gugi zones in the Oromia Regional State during 2008. Conventional …

Successful Implementation Of Collective Action And Human-Capacity Building Among Pastoralists In Southern Ethiopia: Lessons Learned, 2001-2008, D. Layne Coppock, Seyoum Tezera, Solomon Desta, Getachew Gebru

Environment and Society Faculty Publications

Since 2000 the PARIMA project has implemented pilot risk-management activities among poverty-stricken, semi-settled pastoralists in southern Ethiopia. The goal has been to improve human welfare via collective action and capacity building. Outcomes include progress in income generation, asset conservation, and livelihood diversification. The approach has been unique to southern Ethiopia in that a bottom-up, participatory perspective has dominated. It has focused on the priorities and felt needs of local people rather than top-down development of livestock or agricultural technology. Fifty-nine collective-action groups were created. Dominated by women, they have included over 2,300 members and most groups have been recently merged …

Are Cattle Die-Offs Predictable On The Borana Plateau, D. Layne Coppock, Getachew Gebru, Solomon Desta, Sintayehu Mesele, Seyoum Tezerra

Environment and Society Faculty Publications

Drought regularly affects rangelands and contributes to high death rates for livestock and poverty for pastoralists. But do livestock losses occur randomly simply when rainfall is low, or are they cyclical and predictable? Previously, PARIMA researchers proposed that high stocking rates—combined with low rainfall—trigger livestock die-offs on the Borana Plateau. It takes about six years for animal numbers to recover, setting the stage for another die-off when a dry year occurs. This “boom-and-bust” cycle is based on observed herd crashes in 1983-5, 1991-3, and 1998-9. Researchers predicted in 2002 that the next major die-off would occur during 2004-06, and one …

What Are Consumers In Moyale, Kenya Willing To Pay For Improved Milk Quality?, D. Layne Coppock, Francis O. Wayua, Mohamed G. Shibia, Moses S. Mamo

Environment and Society Faculty Publications

Pastoralists in northern Kenya and southern Ethiopia may be able to diversify income by selling milk to urban residents. However, milk sold in open-air markets is often low in quality because it has been transported long distances without refrigeration and is subject to spoilage, or because milk is adulterated prior to sale to boost volume or enhance appearance. Open-air markets are characterized by low-income consumers who must make choices about milk quality with virtually no information other than their own sensory perceptions. PARIMA researchers used an experimental-auction approach to determine what residents in Moyale, Kenya, are willing to pay (WTP) …

Socio-Demographic And Financial Predictors Of Discharged Chapter 12 Bankruptcies For Utah, Idaho, And Wyoming, Jessica Johnson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to examine the socio-demographic and financial characteristics that were associated with the likelihood of a discharge among Chapter 12 bankruptcy filers in Utah, Idaho, and Wyoming. Previous bankruptcy studies conducted in Utah have looked at the same associations in Chapter 7 and Chapter 13. This study contains individual filer-level data from 158 Chapter 12 bankruptcy cases filed in Utah, Idaho, and Wyoming between 1997 and 2005. These cases were accessed through the Web-PACER system, a database of imaged court documents filed in district bankruptcy courts. Free access to this system was given by the …

Self-Medicative Behavior Of Sheep Experiencing Gastrointestinal Nematode Infections And The Postingestive Effects Of Tannin, Larry D. Lisonbee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Diet selection and self-medication are fundamental to the survival of all species. The abilities to choose healthy foods in response to past consequences are basic elements of evolution. This study explores self-medication regarding tannins both as a medication and as a dietary challenge. In the first study, sheep with natural parasite infections were offered a low quality supplement containing a dose of tannins considered to be therapeutic (medicine), while the control infected lambs received the same supplement without tannins (placebo). This study included a group of parasite-free lambs. The parasitized lambs ate more of the tannin containing supplement than non-parasitized …

A Conceptual Framework For Understanding Effects Of Wildlife Water Developments In The Western United States, Randy T. Larsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Free water can be a limiting factor to wildlife in arid regions of the world. In the western United States, management agencies have installed numerous, expensive wildlife water developments (e.g. catchments, guzzlers, wells) to: 1) increase the distribution or density of target species, 2) influence animal movements, and 3) mitigate for the loss of available free water. Despite over 50 years as an active management practice, water developments have become controversial for several species. We lack an integrated understanding of the ways free water influences animal populations. In particular, we have not meshed understanding of evolutionary adaptations that reduce the …

Henry Viii: Supremacy, Religion, And The Anabaptists, Joel Martin Gillaspie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In 1534, the English Parliament passed the Act of Supremacy. This effectively stripped all of the authority the Pope held in England and gave it to Henry VIII. Also because of the Act of Supremacy Henry VIII gained a new title: Supreme Head of the Church of England. However, there was a problem. The Act of Supremacy only vaguely defined the new powers that had been given to the King. Consequently, what exactly his new powers were and their limits had to be established. The other issue that had to be dealt with was the establishment of the canons of …

Student Achievement And Affective Traits In Electrical Engineering Laboratories Using Traditional And Computer-Based Instrumentation, Matthew D. Lammi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Distance education has the ability to transcend distance and time, reaching students anywhere at any time, particularly those underrepresented in engineering. Engineering is a practice-oriented profession requiring an interweaving of scientific theory and applied hands-on activities. Despite the need for distance education in engineering, few studies have systematically investigated the impact of student achievement and attitude in distance engineering laboratories. This quasi-experimental research addressed that need by studying the cognitive and affective domains of achievement in engineering laboratories while employing computer-based and traditional oscilloscopes. The students from two courses, electrical engineering for nonmajors and electronic fundamentals, were randomly assigned into …

Soil Moisture Responses In Traditional And Drought Adapted Landscapes In The Intermountain West, James Gregory

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Water conservation in the Intermountain West will be an important issue in the future as population and demand for limited water resources increases. In Utah, outdoor water use accounts for up to 60% of total per capita water use with 67% of that outdoor water being used to irrigate non native plant species to maintain a uniform green appearance. The objective of this study was to measure intra landscape changes in soil water potential during a 21.5 day dry down from DOY 215 to 236.5 in the summer of 2005 and 2006. Four, 2 x 2 replicated traditional and drought …

Rereading And Rewriting Women's History, Jacqueline Harris

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In Margaret Atwood’s nonfiction book Negotiating with the Dead: A Writer on Writing (2002), Atwood discusses the importance of the female writer’s responsibility, that to write as a woman or about women means that you take upon yourself the responsibility of writing as a form of negotiation with our female dead and with what these dead took with them—the truth about who they were. By rereading and rewriting our communal past, women writers pay tribute to our female ancestors by voicing their silent stories while also changing gender stereotypes, complicating who these women were, and acknowledging their accomplishments.

In her …

Disturbance As Restoration In The Intermountain Sagebrush Steppe: Effects On Non Target Bird Species, Russell Edward Norvell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Changes in shrubsteppe passerine bird habitat associations in response to disturbance were investigated at multiple temporal and spatial scales. Spatial measures incorporated the effects of area at different ecological scales (nest site, territory, and landscape) to include ecologically meaningful extents. Temporal measures included seasonal and annual effects, and were designed to detect lagged responses should they occur. Local-to-landscape scale effects of mechanical restoration treatments on local extirpation and abundances of nine species indicated most were insensitive to changes in habitat quality, while abundance models showed only broad declines. Changing the availability of nesting habitat on both the attractiveness and quality …

Long-Term Effectiveness Of Brief Multiple-Stimulus Without Replacement Preference Assessments On Individualized Education Plan Reading Progress Of Students With Severe Disabilities, Heather C. Thornton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

To teach operant behaviors to individuals with severe disabilities, stimulus preference assessment (SPA) methods have been developed to accurately identify stimuli that may function as reinforcers. Previous researchers have used multiple-stimulus preference assessments without replacement (MSWO) effectively over a short time period to teach target behaviors to individuals with disabilities. The present study investigated the long-term effects of incorporating brief MSWO preference assessments into the instructional routine for students with severe disabilities on individualized education plan reading goal/objective progress. This was done by investigating the effectiveness of incorporating brief MSWO preference assessments by comparing reading goal progress when a random …

Design Guidelines For The Historic Downtown Of The City Of St. George, Utah, Bronson Ron Tatton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This document proposes historic preservation guidelines for the downtown area of the City of St. George, Utah. It grew from a summer internship with the city where I took inventory of the streetscape in the Historic Downtown and prepared recommendations in the form of a PowerPoint Presentation that was given to the city council. This paper summarizes the summer internship and introduces a more appropriate approach based on reflection of the internship. The new approach involves a thorough inventory of the historic character, in-depth research of the historic elements that contribute to the historic character, development of design guidelines and …

Nutrient Loading And Eutrophication In The Great Salt Lake, Wayne A. Wurtsbaugh

Watershed Sciences Faculty Publications

No abstract provided.

Academic Standards Subcommittee Minutes, November 13, 2008, Utah State University

Educational Policies Committee

• Academic Integrity Policy
• Grades from international universities

Soil Salinity And Ornamental Plant Selection, Heidi Kratsch

All Current Publications

Selection of plants for landscapes requires consideration of a number of factors, including cold-hardiness, aesthetic characteristics, maintenance requirements (pest control, fertilization, etc.), soil pH tolerance, droughttolerance, and availability

Embryology: Life In Twenty-One Days, John Wesley

All Current Publications

This publication explains the process of an egg hatching into a chick.

Tooele County 4-H Leader's Guide, Stephen Sagers

All Current Publications

This manual that helps new leaders better understand the 4-H program in Tooele County.

Curriculum Subcommittee Minutes, October 2, 2008, Utah State University

Educational Policies Committee

Department of Animal, Dairy and Veterinary Science

• Add Multiple List

Department of Nutrition and Food Sciences

• New Course
• Delete Course

Department of Plants, Soils, and Climates

• Repeatable for credit

Huntsman School of Business

• Repeatable for credit

School of Accountancy

• Grade Mode Change

Department of Business Administration

• Grade Mode Change

Department of Management and Human Resources

• Grade Mode Change

Department of Communicative Disorders and Deaf Education

• New Course

Department of Family, Consumer and Human Development

• Course Description Change, Add Dual List
• Title Change, Credit Hour Change, Course Description Change

Department of Instructional Technology and Learning Sciences

• Title Change, Course Description Change …

Problem-Based Educational Games: Connections, Prescriptions, And Assessment, Andrew Walker, Brett E. Shelton

Instructional Technology and Learning Sciences Faculty Publications

The overwhelming success of the commercial game market has brought increased attention to emerging work in educational game design. Much of the existing work in educational games a strong similarity to the field of Problem-Based Learning (PBL), which has a rich history of conceptual literature as well as empirical investigations. Despite apparent similarities between the two fields, there has been no formal effort to explore the connections between them. This conceptual paper examines the basic tenants of PBL with an eye toward making prescriptive recommendations for the design and use of problem-based educational games. Examples within existing educational games are …

Nutrient Content Of Camelina Sativa And Feeding Trials In Turkeys, David Frame, Matt Palmer

All Current Publications

There is increasing interest in converting waste cooking oil and oil produced from oilseed crops, such as camelina, into biofuels in order to decrease dependence on petroleum products for fuel sources.

Movement Strategies Of Seed Predators As Determinants Of Plant Recruitment Patterns, Lorenzo Mari, Renato Casagrandi, Marino Gatto, Tal Avgar, Ran Nathan

Wildland Resources Faculty Publications

Plant recruitment in nature exhibits several distinctive patterns ranging from hump shaped to monotonically decreasing with distance from the seed source. We investigate the role of post-dispersal seed predation in shaping these patterns, introducing a new mechanistic model that explicitly accounts for the movement strategy used by seed eaters. The model consists of two partial differential equations describing the spatiotemporal dynamics of both seed and predator densities. The movement strategy is defined by how predators move in response to the different cues they can use to search for seeds. These cues may be seed density, seed intake, distance from the …