Digital Commons Network^™

Evaluating The Smart Steps For Stepfamilies: Embrace The Journey Program, A Hierarchical Examination, Katie L. Reck

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Over the past decade, relationship education has grown as a means of enhancing couple relations. This study examines the experiences of 2,828 ethnically diverse and low-income adults who participated in the Smart Steps for Stepfamilies: Embrace the Journey program, a 12-hour stepfamily education program. Self-report measures of relationship quality, couple commitment, and relationship instability were gathered prior to and immediately after the Smart Steps intervention as well as six weeks, six months, and one year post-program. Results suggest that stepfamily participants experienced increases in relationship quality; however, these increases reduced to near pre-program levels one year after the programs completion. …

Winter Waterbird Ecology On The Great Salt Lake, Utah, And Interactions With Commercial Harvest Of Brine Shrimp Cysts, Anthony J. Roberts

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Interactions among commercial fisheries and birds have been studied in open ocean ecosystems and at aquaculture facilities. On the Great Salt Lake (GSL), Utah, USA, a commercial harvest of brine shrimp (Artemia franciscana) eggs (i.e. cysts) occurs annually during fall and winter. Coinciding with commercial harvest is the use of the GSL by millions of waterbirds which has the potential to result in conflict among industry and birds. The objectives of my research were to examine fall and winter ecology of birds using the GSL and interactions with the brine shrimp cyst harvest. I examined the influence of temperature and …

Computer Self-Efficacy, Cognitive Actions, And Metacognitive Strategies Of High School Students While Engaged In Interactive Learning Modules, Harry Budi Santoso

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this research was to investigate high school students’ computer self-efficacy, cognitive actions, and metacognitive strategies in a self-regulated learning (SRL) framework while utilizing an interactive learning module. The researcher hypothesized that computer self-efficacy is correlated positively with cognitive actions and metacognitive strategies while the students are engaged with interactive learning modules. This research used a mixed-methods approach to answer the research questions. Two research questions guided this research: (1) How is students’ computer self-efficacy related to cognitive actions and metacognitive strategies while using interactive learning modules?; and (2) How do students plan monitor their cognitive actions, and …

Substrate Binding And Reduction Mechanism Of Molybdenum Nitrogenase, Zhiyong Yang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As a key constituent of proteins, nucleic acids, and other biomolecules, nitrogen is essential to all living organisms including human beings. Dinitrogen represents the largest pool of nitrogen, about 79% of the Earth’s atmosphere, yet it is unusable by most living organisms due to its inertness. There are two ways to fix this inert dinitrogen to usable ammonia. One is the industrial Haber-Bosch process, which needs to be conducted at high temperature and pressure. This process uses a lot of the non-renewable fossil fuel as the energy source. The other major pathway is the biological nitrogen fixation carried out by …

Conventional And Catalytic Pyrolysis Of Pinyon Juniper Biomass, Bhuvanesh Kumar Yathavan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Pinyon and juniper are invasive woody species which has occupied more than 47 million acres of land in Western United States. Pinyon juniper woodlands domination decreases the herbaceous vegetation, increase bare lands which in turn increases soil erosion and nutrition loss. Thus, The US Bureau of Land Management (BLM) has focused on harvesting these woody species to make room for herbaceous vegetation. The major application of harvested pinyon-juniper (PJ) is low value firewood. Thus, there is a need to develop new high value products from this woody biomass to reduce the cost of harvesting. In this study pyrolysis was carried …

Investigating The Importance Of The N-Terminal Negative Residues In Human Prmt1, Brooke Siler

Undergraduate Honors Capstone Projects

Many essential physiological pathways, such as cell proliferation, gene expression, and cardiovascular health are regulated by Protein Arginine Methyltransferases (PRMTs) through methylation of arginine residues in protein substrates. Understanding how PRMTs interact with their substrates is pivotal to understanding the biological role of these enzymes, and fundamental to the goal of identifying possible sites to be inhibited through drug therapy. Natural variations in the N-terminus of the PRMTl enzymes and data collected in our lab suggest that the N-terminus is important for activity and/or the binding of protein substrates. Preliminary data collected had led us to hypothesize that the negatively …

Methylmercury Fate In The Hypersaline Environment Of The Great Salt Lake: A Critical Review Of Current Knowledge, Danielle Barandiaran

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Methylmercury (MeHg) is a highly potent neurotoxic form of the environmental pollutant Mercury (Hg). The processes that are responsible for the conversion of Hg to MeHg are known to be both biotic and abiotic in freshwater systems. Although MeHg contamination is well documented in Great Salt Lake (GSL), the conversion of Hg into MeHg is not well-understood in saline environments much less in hypersaline waters such as GSL. The GSL is a broad, shallow high altitude (1280 m above sea level) lake that is exposed to large amounts of ultraviolet radiation and evaporation, which lead to great volatilization losses of …

The Modern Language Classroom: Individuality, Technology, And Context, Eric Sims

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This portfolio is a compilation of the author’s research-supported ideas on what good language teaching looks like. The central component is the teaching philosophy, in which the author explains that respect for individuality, use of technology, and use of culture as context for learning are the three elements seen as most important for successful language learning.
The teaching philosophy is supported by artifacts about peer feedback in language learning, literacy in adult English as a Second Language learners, and autonomy in culture learning. Finally, in three annotations the author branches out from the pillars of the teaching philosophy and examines …

Are We Running Out Of Phosphorus?, Nayda Gonzalez, Rhonda Miller

All Current Publications

Phosphorus is an essential nutrient. The world’s phosphorus supplies are limited. Do we have enough phosphorus to support our needs? This fact sheet addresses this question.

Permaculture, Roslynn Brain, Blake Thomas

All Current Publications

No abstract provided.

Characterization Of An Aerodynamic Lens For Transmitting Particles Greater Than 1 Micrometer In Diameter Into The Aerodyne Aerosol Mass Spectrometer, L. R. Williams, L. A. Gonzalez, J. Peck, D. Trimborn, J. Mcinnis, M. R. Farrar, K. D. Moore, J. T. Jayne, W. A. Robinson, D. K. Lewis, T. B. Onasch, M. R. Canagaratna, A. Trimborn, M. T. Timko, G. Magoon, R. Deng, D. Tang, E. De La Rosa Blanco, A. S. H. Prévôt, K. A. Smith, D. R. Worsnop

Space Dynamics Laboratory Publications

We have designed and characterized a new inlet and aerodynamic lens for the Aerodyne aerosol mass spectrometer (AMS) that transmits particles between 80 nm and more than 3 µm in vacuum aerodynamic diameter. The de-sign of the inlet and lens was optimized with computational fluid dynamics (CFD) modeling of particle trajectories. Ma-jor changes include a redesigned critical orifice holder and valve assembly, addition of a relaxation chamber behind the critical orifice, and a higher lens operating pressure. The transmission efficiency of the new inlet and lens was char-acterized experimentally with size-selected particles. Exper-imental measurements are in good agreement with the …

The Utah Statesman, November 26, 2013, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

Ceratobasidium Root Rot: A New Disease Of Watermelon In Arizona, Claudia Nischwitz

All Current Publications

No abstract provided.

Resilience To Stress And Disturbance, And Resistance To Bromus Tectorum L. Invasion In Cold Desert Shrublands Of Western North America, Jeanne C. Chambers, Bethany A. Bradley, Cynthia S. Brown, Carla D'Antonio, Matthew J. Germino, James B. Grace, Stuart P. Hardegree, Richard F. Miller, David A. Pyke

Articles

Alien grass invasions in arid and semi-arid ecosystems are resulting in grass–fire cycles and ecosystem-level transformations that severely diminish ecosystem services. Our capacity to address the rapid and complex changes occurring in these ecosystems can be enhanced by developing an understanding of the environmental factors and ecosystem attributes that determine resilience of native ecosystems to stress and disturbance, and resistance to invasion. Cold desert shrublands occur over strong environmental gradients and exhibit significant differences in resilience and resistance. They provide an excellent opportunity to increase our understanding of these concepts. Herein, we examine a series of linked questions about (a) …

The Utah Statesman, November 14, 2013, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

The Utah Statesman, November 12, 2013, Utah State University

The Utah Statesman

No abstract provided.

Benchmarking An Optimal Pattern Of Pollution Trading: The Case Of Cub River, Utah, Arthur Caplan, Yuya Sasaki

Applied Economics Faculty Publications

This paper employs a recently developed, dynamic trading algorithm to establish a benchmark pattern of trade for a potential water quality trading (WQT) market in the Cub River sub-basin of Utah; a market that would ultimately include both point and nonpoint sources. The algorithm accounts for three complications that naturally arise in trading scenarios: (1) combinatorial matching of traders, (2) trader heterogeneity, and (3) discreteness in abatement technology. The algorithm establishes as detailed a reduced-cost benchmark as possible for the sub-basin by distinguishing a specific pattern of trade among would-be market participants. As such, the algorithm provides a benchmark against …

Educational Policies Committee Minutes, November 7, 2013, Utah State University

Educational Policies Committee

• Subcommittee Reports
• Curriculum Subcommittee
• Academic Standards Subcommittee
• General Education Subcommittee

Educational Policies Committee Agenda, November 7, 2013, Utah State University

Educational Policies Committee

• Subcommittee Reports
• Curriculum Subcommittee
• Course Approvals
• Academic Standards Subcommittee
• General Education Subcommittee

Curriculum Subcommittee Agenda, November 7, 2013, Utah State University

Educational Policies Committee

Provost’s Office

• Title Change, Credit Hour Change, Course Description Change

School of Applied Sciences, Technology and Education

• Grade Mode Change

Department of Agriculture Systems and Technology

• New Course
• Prefix Change, Title Change, Course Description Change
• Prefix Change
• Prefix Change, Title Change
• Prefix Change, Title Change, Credit Hour Change
• Add Multiple List, Course Description Change
• Add Multiple List
• Add Multiple List, Title Change, Course Description Change

Department of Plants, Soils and Climate

• Multiple List Change

Department of Art and Design

• Prerequisite Change

Department of Music

• New Course
• Delete Course

Department of Theatre Arts

• New Course
• Removal of University Studies Designation

Department …

The Utah Statesman, November 5, 2013, Utah State University

The Utah Statesman

Weekly student newspaper of Utah State University in Logan.

An Assessment Of Permanent And Nonpermanent Plots In Riparian Vegetation Monitoring, Karin M. Kettenring, Caroline M. Laine, Brett B. Roper

Watershed Sciences Faculty Publications

The aim of this research was to determine whether permanent and nonpermanent plots for describing riparian plant communities would yield the same results. This research was conducted at 4 streams in central eastern Idaho. Permanent and nonpermanent greenline plots (first perennial vegetation adjacent to stream) were sampled repeatedly from June to October 2010, and we assessed differences between plot types by comparing species richness, wetland indicator rating, and percent cover of live vegetation, forbs, graminoids, litter/moss, and bare ground. We found few statistically significant differences between permanent and nonpermanent greenline plots. Because both types of plots yielded similar results, we …

A Regime Shift From Macrophyte To Phytoplankton Dominance Enhances Carbon Burial In A Shallow, Eutrophic Lake, Soren Brothers, Sabine Hilt, Katrin Attermeyer, Hans Peter Grossart, Sarian Kosten, Betty Lischke, Thomas Mehner, Nils Meyer, Kristin Scharnweber, Jan Kohler

Watershed Sciences Faculty Publications

Ecological regime shifts and carbon cycling in aquatic systems have both been subject to increasing attention in recent years, yet the direct connection between these topics has remained poorly understood. A four-fold increase in sedimentation rates was observed within the past 50 years in a shallow eutrophic lake with no surface in- or outflows. This change coincided with an ecological regime shift involving the complete loss of submerged macrophytes, leading to a more turbid, phytoplankton- dominated state. To determine whether the increase in carbon (C) burial resulted from a comprehensive transformation of C cycling pathways in parallel to this regime …

Tremblings, November 2013, Western Aspen Alliance

Tremblings

Does Aspen Need Fire?

Douglas Shinneman

It is commonly accepted that aspen needs fire or other stand- replacing disturbance to persist on many landscapes. The prevailing aspen-fire model, in a nutshell, could be stated as follows: After fire, aspen resprouts vigorously, often forming even-aged stands that dominate for decades, as long as browsing animals or other factors don’t impede regeneration. Historically, periodic fire created cycles of aspen and conifer dominance, and produced shifting mosaics of different forest types across landscapes. Too long without fire (e.g., due to fire suppression and moist climate), and conifers extend their dominance, as aging and …

Community-Level Response To Habitat Structure Manipulations: An Experimental Case Study In A Tropical Ecosystem, Emily A. Kalnicky, Karen H. Beard, Mark W. Brunson

Wildland Resources Faculty Publications

Across the globe, environmental change is resulting in novel ecosystems that have altered habitat structure and functioning. Research is needed to understand how changes in habitat structure in these new ecosystems impact community interactions, especially when these manipulations are being proposed to reduce invasive species. We conducted an experiment in Hawaii to determine how changes in habitat structure, represented by leaf litter and understory vegetation, affect the abundance of an invasive generalist predator, the coqui frog (Eleutherodactylus coqui) and its potential prey (invertebrates). This study consisted of four treatments: two vegetation treatments (50% and 100% removal of vegetation with diameter …

Cognitive Apprenticeship And The Supervision Of Science And Engineering Research Assistants, Michelle A. Maher, Joanna A. Gilmore, David F. Feldon, Telesia E. Davis

Instructional Technology and Learning Sciences Faculty Publications

We explore and critically reflect on the process of science and engineering research assistant skill development both within laboratory-based research teams and, when no team is present, whithin the faculty supervisor-research assistant interactions. Using a performance-based measure of research skill development, we identify research assistants who, over the course of an academic year of service as a researcher, markedly developed, modestly developed, or failed to develop their research skills. Interviews with these research assistants and their faculty supervisors, seen through the lens of cognitive apprenticeship, provide insight into this variation. We found that within the contours of supervisory relationships and …

Botrytis Neck Rot Of Onion, Claudia Nischwitz

All Current Publications

No abstract provided.

Apple Maggot, Diane Alston, Marion Murray

All Current Publications

Apple maggot is not currently a pest of commercial orchards in Utah, but it is regulated as a quarantine insect in the state. If it becomes established in commercial fruit production areas, its presence can inflict substantial economic harm through loss of export markets. Infestations cause fruit damage, may increase insecticide use, and can result in subsequent disruption of integrated pest management programs.

Physiological Ecology And Functional Traits Of North American Native And Eurasian Introduced Phragmites Australis Lineages, Thomas J. Mozdzer, Jacques Brisson, Eric L. G. Hazelton

Watershed Sciences Faculty Publications

Physiological ecology and plant functional traits are often used to explain plant invasion. To gain a better understanding of how traits influence invasion, studies usually compare the invasive plant to a native congener, but there are few conspecific examples in the literature. In North America, the presence of native and introduced genetic lineages of the common reed, Phragmites australis, presents a unique example to evaluate how traits influence plant invasion.We reviewed the literature on functional traits of P. australis lineages in North America, specifically contrasting lineages present on the Atlantic Coast.We focused on differences in physiology between the lineage introduced …

Progress Towards Real-Time Radiation Measurements On Aircraft, L. Duane Bell, W. Kent Tobiska, Robert W. Schunk

Physics Student Research

The Space Weather Center (SWC) at Utah State University has created a team to deploy and obtain radiation effective dose rate data from dosimeters flown on commercial aircraft. The objective is to improve the accuracy of radiation dose and dose rate estimates for commercial aviation flight crews. There are two general sources of radiation exposure for flight crews: (1) the ever-present, background galactic cosmic rays (GCR), which originate outside the solar system, and (2) the solar energetic particle (SEP) events (or solar cosmic rays), which are associated with solar flares and coronal mass ejections lasting for several hours to days …