Digital Commons Network^™

Multilevel Metric Invariance: A Monte Carlo Simulation, Elizabeth Svoboda

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Multilevel measurement invariance determines the extent to which a construct is measured in the same way across multiple hierarchical nested levels in the context of the current study. Lower-level parameter estimates may differ from parameter estimates based on higher-level aggregates in applied research settings. Multilevel metric invariance is a method to detect the presence of a noninvariant factor loading.

The purpose of the current study was to determine the utility of multiple-group multilevel – confirmatory factor analysis (MGM-CFA) for detecting metric noninvariance in nested data. The example context is noninvariance occurring between treatment and control classrooms with students (i.e., level-one) …

How Discordant Hsv Status Impacts Dyadic Relationships: A Grounded Theory Study, Haley Ann Hermes

College of Education and Human Sciences: Dissertations, Theses, and Student Research

The Centers for Disease Control and Prevention (CDC) reported in 2008 that there were an estimated 110 million sexually transmitted diseases (STDs) among men and women with an estimated 19.7 million new cases every year in the United States (CDC, 2015). Having an STD is associated with negative individual and relational consequences (Beckerman, 2002; Brentjens, Yeung-Yue, Lee, & Tyring, 2003; Drob, Loemer & Lifshultz, 1986; Mark, Gilbert & Nanda, 2009). The combination of the high prevalence of STDs and the associated relational distress makes it likely that working with couples affected by STDs is a common experience for individual and …

Spatial Variation In Western Corn Rootworm (Coleoptera: Chrysomelidae) Susceptibility To Bacillus Thuringiensis Corn Events In Nebraska, Jordan D. Reinders

Department of Entomology: Dissertations, Theses, and Student Research

The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, is an economically important pest species of field corn (Zea mays L.) in the U.S. Corn Belt. Yield losses and control costs exceed greater than $1 billion annually. Over the past 10+ years, growers have adopted transgenic corn hybrids expressing rootworm-active Bacillus thuringiensis (Bt) proteins as a primary WCR management tactic. Field-evolved resistance to Cry3Bb1 and mCry3A proteins expressed in single-trait Bt hybrids has been confirmed in some areas of Nebraska. Growers have used different tactics as needed to prevent or mitigate resistance, resulting in a mosaic of selection pressure placed …

An Examination Of Political Attitudes And Behavior Using Regulatory Focus Theory, Kristen D. Deppe

Department of Political Science: Dissertations, Theses, and Student Research

Using Regulatory Focus Theory (RFT, Higgins 1997), I take a broad look at the manner in which political behaviors and attitudes are impacted by the promotion and prevention motivational systems. I first look at how behavior in life generally and political life specifically are similar in terms of regulatory focus. Second, I look at how RFT is related to political attitudes. Specifically, I look at whether there is a connection between regulatory focus and ideological attitudes, whether there is a relationship between policy context and motivational systems, and whether the status quo of a policy leads to a relationship between …

High Throughput Phenotyping Of Sorghum For The Study Of Growth Rate, Water Use Efficiency, And Chemical Composition, Piyush Pandey

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Plant phenotyping using digital images has increased the throughput of the trait measurement process, and it is considered to be a potential solution to the problem of the phenotyping bottleneck. In this study, RGB images were used to study relative growth rate (RGR) and water use efficiency (WUE) of a diverse panel of 300 sorghum plants of 30 genotypes, and hyperspectral images were used for chemical analysis of macronutrients and cell wall composition. Half of the plants from each genotype were subjected to drought stress, while the other half were left unstressed. Quadratic models were used to estimate the shoot …

Thermodynamic Limitations To Agricultural Productivity And Food Security: Livestock In Sub-Saharan Africa, Calvin Harman

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

By 2050, to feed a nearly tripling and more urbanized population in sub-Saharan Africa (SSA) will require significant increases in crop productivity throughout the region’s agricultural systems, if a greater reliance on imports is to be avoided. Increases in crop yields to maximum potential productivity (closure of crop yield gaps) can produce more calories and protein, but may be insufficient to sustain the burgeoning human population according to recent analysis (van Ittersum et al., 2016). In this thesis, alternative management options (i.e. crop allocation and crop substitutions) are found to increase total energy productivity and the thermodynamic efficiency of food …

Cultivation Of Chlorella Sorokiniana Using Beef Feedlot Runoff Holding Pond Effluent, Mitchell Klaus Goedeken

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

A study was conducted to test the suitability of utilizing beef feedlot runoff holding pond effluent for cultivating algae. The algae strain used, Chlorella sorokiniana, was previously identified as a potential energy feedstock for cattle. The previous research was initiated in pursuit of a goal to develop a cycle of utilizing nutrients from beef manure to cultivate algae and then utilizing dewatered algae as a feed supplement for beef cattle.

Runoff holding pond effluent samples were collected from commercial beef production operations in Nebraska during spring 2016. Equal portions of samples from each cooperating farm were composited and then aliquoted …

Use Of Long Term Weather Data And Spatially Delineated Field Attributes To Predict Water And Energy Conservation From Variable Rate Irrigation, Sahil Sharma

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

The declining levels of the Ogallala aquifer calls for more judicious use of water. Studies have shown that VRI has the potential for water savings. But adoption of VRI is still very low. The major reason is lack of information on the returns from the VRI systems and its feasibility in different fields. Also, a quantification of the required reduction in prices of VRI is necessary. So, an economic return analysis of VRI strategies was done to compare it to uniform irrigation management (UIM) using a water balance model based on long term weather data and field properties for a …

Assessing Relationships Between Angling Effort And Larval Trematodes In Small Bluegill, Alexis Park

School of Natural Resources: Dissertations, Theses, and Student Research

I wanted to determine if catch-and-release angling increased larval trematodes in small (50-160 mm) bluegill (Lepomis macrochirus). I used angling effort as a proxy for amount of catch-and-release angling. I assumed bluegill assessed, due to their size and age, experienced catch-and-release events. I assessed larval trematode intensity, black spot (Crassiphiala bulboglossa), and white grub (Posthodiplostomum minimum centrarchi), in 750 bluegill. The first objective was to quantify the association between angling effort and reservoir area. Angling effort and reservoir area were positively correlated. The second objective was to determine if angling effort, reservoir area, bluegill …

An Observational And Modeling Study Of Mesoscale Airmasses With High Theta-E, Lawrence Wolfgang Hanft

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

Typically, the cool side of an airmass boundary is stable to vertical motions due to its associated negative buoyancy. However, under certain conditions, the air on the cool side of the boundary can undergo a transition wherein it assumes an equivalent potential temperature and surface-based convective available potential energy that is higher than that of the airmass on the warm side of the boundary. The resultant airmass is herein referred to as a mesoscale airmass with high theta-e (MAHTE).

Results are presented from an observational and mesoscale modeling study designed to examine MAHTE characteristics and the processes responsible for MATHE …

Land Use Land Cover Change Effects On Southern Great Plains Precipitation, Alexandra Caruthers

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

Great Plains land use has changed substantially over the last 160 years, altering the properties of the land through increased settlement and advances in irrigation. Changing the interface between the land and atmosphere has implications for the atmospheric boundary layer, the regional circulation, the local surface energy budget and resulting precipitation patterns. Land use land cover (LULC) changes are an important topic for this region due to its heavy dependence on agriculture. This study investigates differences in Southern Great Plains precipitation patterns between four LULC scenarios: the pre-settlement, 1920’s, Dust Bowl and present day eras. Using the Weather Research and …

Anatomía Comparada De La Representación De La Muerte En La Literatura Española Transatlántica Durante El Ocaso De La Edad Media Y El Renacimiento, Miguel Ángel Albújar Escuredo

Department of Modern Languages and Literatures: Dissertations, Theses, and Student Research

The main goal of this project is to dissect how death is represented during the Late Middle Ages, the Renaissance and the beginning of the phenomenon of colonization of America carried out by the Spanish Empire, all of it by means of reviewing the representations in Spanish literary works of those times. This is accomplished by comparing works diachronically in order to reveal the main thematic variations between them. To that effect, representative models are taken from the literary canon in Spanish that involves texts since the Late Middle Ages until the first modernity, also known as the Renaissance. This …

Effects Of Vagotomy And Fenugreek On Hyperlipidemia And Insulin Resistance, Rituraj Khound

Department of Nutrition and Health Sciences: Dissertations, Theses, and Student Research

Hyperlipidemia is the impairment of lipid metabolism marked by abnormally high levels of lipid in circulation. This has been implicated in a number of metabolic diseases including diabetes, cardiovascular diseases, and nonalcoholic fatty liver disease. Insulin resistance is the impairment of insulin action, which leads to several diseases such as obesity and type 2 diabetes. New clinical and therapeutic approaches are warranted for the prevention and treatment of hyperlipidemia and insulin resistance. In our study, we investigated the mechanism underlying the effect of complete disruption of the sub-diaphragmatic vagus nerve (vagotomy) on hyperlipidemia and insulin sensitivity. We observed that vagotomy …

Applying The Diffusion Of Innovation Theory To Characterize Stem Faculty Attending Professional Development Programs, Dihua Xue

Department of Chemistry: Dissertations, Theses, and Student Research

Instructional practices in undergraduate STEM courses have been static for decades, with a primary focus on lecture. Over the last twenty years, extensive research on how people learn science has led to the development of innovative instructional strategies that have been shown to enhance students’ learning and interest. These in turn have led to calls to reform instructional practices in STEM fields at the undergraduate level. However, evidence shows that these research-based instructional strategies have largely not been incorporated into classes. The promotion of these new strategies has been mostly conducted through workshops. Although numerous studies have evaluated the impact …

Developing Functionalized Peroxide Precursors For The Synthesis Of Cyclic And Spirocyclic Ethers, Anna J. Diepenbrock

Department of Chemistry: Dissertations, Theses, and Student Research

There is increasing interest in the development of methods for the synthesis of oxetanes and spirocyclic oxetanes, a class of molecules of interest to chemists as they synthesize libraries of possible drug target scaffolds with tunable physiochemical and biological properties.^1,2 Although most ethers are prepared through reaction of nucleophilic oxygen with electrophilic carbon, this work explores new reagents and routes for the synthesis of spirocyclic oxetanes based upon an application of "umpolung" or polarity reversal involving attack of nucleophilic carbon on the electrophilic oxygen of a peroxide (Scheme 1). In this work, a 2-carbon peroxide synthon for reverse etherification …

Venture Capital Contract Design: An Empirical Analysis Of The Connection Between Bargaining Power And Venture Financing Contract Terms, Spencer Williams

Fordham Journal of Corporate & Financial Law

This Article presents an empirical analysis of the connection between bargaining power and contract design using an original dataset of over 5,500 equity and debt venture financings from 2004–2015. Using the total supply of venture capital in the U.S. as a measure of relative bargaining power between entrepreneurs and investors, this Article finds that venture capital supply has a statistically significant relationship with price and non-price terms in both equity and debt financings. These results contradict one of three theoretical accounts of bargaining power and support the other two.

A Novel Approach To Defining "Whistleblower" In Dodd-Frank, Ian A. Engoron

Fordham Journal of Corporate & Financial Law

Following the Financial Crisis of 2008, trust in the financial industry was at an all-time low as the American taxpayer was forced to bailout the very same institutions responsible for their suffering. In response, Congress passed Dodd-Frank in 2010 to ensure another crisis like 2008 never happen again. Section 78u-6 of the Act provides incentives and protections for whistleblowers who report violations of securities laws. In recent years there has been a divide among circuit courts over the question of whether employees who report violations internally to their bosses—and not directly to the SEC—are protected by the Act. Currently, the …

Proxy Access And Optimal Standardization In Corporate Governance: An Empirical Analysis, Reilly S. Steel

Fordham Journal of Corporate & Financial Law

According to the conventional wisdom, “one size does not fit all” in corporate governance. Firms are heterogeneous with respect to their governance needs, implying that the optimal corporate governance structure must also vary from firm to firm. This one-size-does-not-fit-all axiom has featured prominently in arguments against numerous corporate law regulatory initiatives, including the SEC’s failed Rule 14a-11—an attempt to impose mandatory, uniform “proxy access” on all public companies—which the D.C. Circuit struck down for inadequate cost–benefit analysis.

This Article presents an alternative theory as to the role of standardization in corporate governance—in which investors prefer standardized terms—and empirical …

Cerebrovascular Pathology In Down Syndrome And Alzheimer Disease, Elizabeth Head, Michael J. Phelan, Eric Doran, Ronald C. Kim, Wayne W. Poon, Frederick A. Schmitt, Ira T. Lott

Sanders-Brown Center on Aging Faculty Publications

People with Down syndrome (DS) are at high risk for developing Alzheimer disease (AD) with age. Typically, by age 40 years, most people with DS have sufficient neuropathology for an AD diagnosis. Interestingly, atherosclerosis and hypertension are atypical in DS with age, suggesting the lack of these vascular risk factors may be associated with reduced cerebrovascular pathology. However, because the extra copy of APP leads to increased beta-amyloid peptide (Aβ) accumulation in DS, we hypothesized that there would be more extensive and widespread cerebral amyloid angiopathy (CAA) with age in DS relative to sporadic AD. To test this hypothesis CAA, …

Table Of Contents

The Prairie Light Review

No abstract provided.

Bridge Over The Mississippi, Thomas Skibbie.

The Prairie Light Review

No abstract provided.

Continuum, Molly Miklosz

The Prairie Light Review

No abstract provided.

Unpredictable, Jasmine Meza

The Prairie Light Review

No abstract provided.

Counting, Raymond Ziemer

The Prairie Light Review

No abstract provided.

Stuck In Red, Mary Sikorski

The Prairie Light Review

No abstract provided.

Do Maples Mourn In Fall?, Audrey Stilling

The Prairie Light Review

No abstract provided.

A Comparative Study Of Wooden And Hyrbid Composite Crossarms Of An Electric Utility Pole, Rohit Avadhani

Mechanical and Aerospace Engineering Theses - Archive

Most of the cross arms in the country are made from wood. Wood, although easily accessible, has its own defects. Environmental effects which includes the expansion and contraction of wood over the years which will disrupt its structural integrity, the presence of termites and other insects which dig into wood and destroy it from the inside, Materials wastage when it comes to improving the structural strength by increasing the cross-sectional thickness and height The replacement of wood with composites seems like a logical idea and also a solution to most of the problems. The applications of composites in our day …

Effect Of Solder Voids And Distance To Neutral Point (Dnp) On Sjr Of Wcsp Under Reflow Condition And Thermal Cycling, Aniruddha Doiphode

Mechanical and Aerospace Engineering Theses - Archive

Since the introduction of Chip Scale Packages (CSP’s) in the early 2000s, they have become one of the biggest packaging trends in recent history. There are currently over 50 different types of CSP’s available throughout the industry and the numbers are increasing almost daily. Wafer Level Chip Scale Package’s (WCSP) is kind of CSP’s used widely due to its small form factor which offers efficient use of limited space and miniaturization of the electronic device. On the other hand, small form factor typically incurs greater initial cost in product design and development. In an electronic device, it is equally important …

Strength And Damage Prognosis Of Adhesive Bond And Inter-Ply Hybrid Composites Based On Dielectric Properties, Priyanshu K. Banerjee

Mechanical and Aerospace Engineering Theses - Archive

Composite materials have found their applications in a wide range of industries particularly in the aerospace and automotive sectors. This is because they are comparatively light-weight and provide a much better corrosion and wear resistance as compared to other ceramics and metals. Adhesive bonding can be used to improve the stress distribution between these composite materials. Moreover, adhesive bond decreases the weight and concentration of stresses in the structure. Broadband Dielectric Spectroscopy, BbDS is a robust tool used for analyzing the dielectric properties of a polymer composite. This method can be used to monitor the curing process of the specimen. …

Multiphase Flow Modeling And Analysis Of Phased Filling Process For Pulsed Detonation Engine, Nirmal Kumar Umapathy

Mechanical and Aerospace Engineering Theses - Archive

Filling of reactants into a pulsed detonation engine (PDE) should be carried out quickly because any lengthening of the fill time will lead to an increased cycle time. The fill process and, the purge process constitutes a large proportion of time in a cycle. The purpose of this research was to improve the time of fill by implementing various injection geometries in two injection schemes with five different premixed stoichiometric fuel-air mixture injected at wide range of velocity. The different configurations examined were end wall injection, side wall injection with ports angled and normal to the flow direction and staggered …