Digital Commons Network^™

2015 Costs And Returns For Irrigated Soft White Wheat, Box Elder County, Lyle Holmgren, Mike Pace

All Current Publications

This fact sheet provides a budget containing sample costs and returns to establish and produce soft white wheat under flood irrigation in Box Elder County. It is intended to be a guide used to estimate income and expenses, list inputs and production practices, and provide a framework for the whole farm plan.

Sensor Authentication In Collaborating Sensor Networks, Jake Uriah Bielefeldt

Masters Theses

"In this thesis, we address a new security problem in the realm of collaborating sensor networks. By collaborating sensor networks, we refer to the networks of sensor networks collaborating on a mission, with each sensor network is independently owned and operated by separate entities. Such networks are practical where a number of independent entities can deploy their own sensor networks in multi-national, commercial, and environmental scenarios, and some of these networks will integrate complementary functionalities for a mission. In the scenario, we address an authentication problem wherein the goal is for the Operator Oⁱ of Sensor Network S^{i …}

American Sign Language Alphabet Recognition Using Microsoft Kinect, Cao Dong

Masters Theses

"American Sign Language (ASL) fingerspelling recognition using marker-less vision sensors is a challenging task due to the complexity of ASL signs, self-occlusion of the hand, and limited resolution of the sensors. This thesis describes a new method for ASL fingerspelling recognition using a low-cost vision camera, which is Microsoft's Kinect. A segmented hand configuration is first obtained by using a depth contrast feature based per-pixel classification algorithm. Then, a hierarchical mode-finding method is developed and implemented to localize hand joint positions under kinematic constraints. Finally, a Random Decision Forest (RDF) classifier is built to recognize ASL signs according to the …

Development Of A Stochastic Model For Performance Characterization Of A Pv/Vrb Microgrid, Kayla M. Speidel

Masters Theses

"Photovoltaic (PV) Microgrids have been proven to be a useful technology in providing an environmentally friendly source of energy when compared to the use of fossil fuels. Accurately characterizing the performance of a microgrid system would ensure that the system is appropriately sized to meet electrical loads without a heavy reliance on diesel generators. A microgrid that is sized properly will reduce the cost of diesel fuel, while also reducing the risk of wasting money on an oversized system. A deterministic model which was created to characterize the performance of PV microgrids based on percent of time generator running was …

Compressed Sensing Techniques For Radial Ultra-Short Echo Time (Ute) Magnetic Resonance Imaging, Xiahan Yang

Masters Theses

"This thesis proposes two techniques, namely Compressed Sensing (CS) and self-gating, for pre-clinical (CMRI) to reduce scan time and RF exposure to mouse heart, simply experimental procedures, and improve imaging quality. The proposed CS technique reduces the number of radial trajectories in Ultra-short Echo Time (UTE) CMRI scans on a 7 Tesla MRI machine to acquire 13% to 38% of the fully sampled k-space data. To reconstruct the image, the Non-Uniform Fast Fourier Transform (NUFFT) is utilized in each iteration of the l1-norm optimization algorithm of the CS to reduce error and aliasing. Experimental results with a phantom and a …

Ph Dependent Antibiotic Resistance Of An Alkaliphilic, Halotolerant Bacterium Isolated From Soap Lake, Washington, Tiffany Charlynn Edwards

Masters Theses

"Soap Lake, located in Washington State, is a meromictic, soda lake. Many bacterial isolates retrieved from Soap Lake have been noted to possess resistance to multiple antibiotics. A likely explanation for the wide range of antibacterial resistance exhibited by these strains is due to the impact of high alkalinity on the antibiotics themselves and not due to the presence of antibiotic resistance genes. The aim of our study was to determine if select antibiotics are effective against Halomonas eurialkalitoleranis, a bacterium capable of growth over a wide range of neutral to alkaline pH values, to investigate the influence of alkalinity …

Day Of The Week Effect In Returns And Volatility Of The S&P 500 Sector Indices, Juan Liu

Masters Theses

"Previous studies have shown that returns associated with the stock market or foreign exchange's futures show variations across the day of the week. On such study, that employs a modified GARCH model for estimation, shows that returns associated with the S&P 500 stock index is highest on Wednesday and lowest returns on Monday. The same study shows that volatility is highest on Fridays and lowest on Wednesdays. In this study we investigate if this day-of-the-week effect on returns and volatility is present in the different sectors that constitute the S&P 500 index. The data set used provides daily returns from …

The Development Of Near Field Probing Systems For Emc Near Field Visualization And Emi Source Localization, Hui He

Masters Theses

"The objectives of this research are to visualize the frequency dependent electromagnetic field distribution for electromagnetic compatibility (EMC) applications and the radiating source reconstruction on complex shaped electronic systems. This is achieved by combining near field probing with a system for automatically recording the probe position and orientation. Due to the complexity of the shape of the electronic systems of interest, and for utilizing the expertise of the user, the probe will be moved manually not robotically. Concurrently, the local near field will be recorded, associated with the location and displayed at near real time on the captured 3D geometry …

Seismic Structural Investigation And Reservoir Characterization Of The Moki Formation In Maar Field, Taranaki Basin, New Zealand, Mohammed Dhaifallah M Alotaibi

Masters Theses

"The Maari Field is a large oil field located in the southern part of the Taranaki Basin, New Zealand. The field is bounded by two major structures, the Eastern Mobile Belt and Western Stable Platform. The Maari Field produces 40,000 BOPD (Barrels of Oil per Day) from five wells from reservoirs in the Moki Formation. The Miocene Moki Formation was deposited as part of the Wai-iti Group and consists of sandstone interbedded with siltstone and claystone. The sandstone of the Moki Formation is characterized by a submarine fan. It is distributed along the southern and central Taranaki shelf. Three-dimensional seismic …

An Improved Planar Cavity Model For Dielectric Characterization, Benjamin Jay Conley

Masters Theses

"Accurate characterization of the dielectric properties of the laminate materials used in printed circuit board fabrication is critical for maximizing the performance of modern high speed circuitry. While many techniques exist for characterizing dielectric materials, most existing techniques are either limited in accuracy or highly impractical for use with planar, copper-clad laminate sheets. A common method involves forming a cavity from the printed circuit board material and calculating the permittivity and dissipation factor from the measured resonant frequencies and quality factor of the cavity. This resonance technique makes the assumption of an ideal cavity, which leads to errors in both …

Utilizing Learning Style Preferences And Quality Function Deployment For Curriculum Development, Julie M. Ezzell

Masters Theses

"Workplace requirements continually evolve to keep pace with the developing global market. To meet ever increasing standards, educational institutions have been investigating methods to prepare students for their future employment. Course modifications should be carefully considered to meet the requirements of all stakeholders, including those of the students. The objective of this research was to provide students with an overall better learning experience that tailors the teaching methods to his/her individual learning preferences. To meet this objective, a comprehensive survey was provided to an undergraduate course in quality. The survey documented the student's individuality when learning and made note of …

Multi-Objective Optimal Dispatch Of Distributed Energy Resources, Ayomide Longe

Masters Theses

"This thesis is composed of two papers which investigate the optimal dispatch for distributed energy resources. In the first paper, an economic dispatch problem for a community microgrid is studied. In this microgrid, each agent pursues an economic dispatch for its personal resources. In addition, each agent is capable of trading electricity with other agents through a local energy market. In this paper, a simple market structure is introduced as a framework for energy trades in a small community microgrid such as the Solar Village. It was found that both sellers and buyers benefited by participating in this market. In …

Hyper-Heuristics For The Automated Design Of Black-Box Search Algorithms, Matthew Allen Martin

Masters Theses

"Within the field of Black-Box Search Algorithms (BBSAs), there is a focus on improving algorithm performance over increasingly diversified problem classes. However, these general purpose problem solvers have no guarantee to perform well on an arbitrary problem class that a practitioner needs to solve. The problem classes that the research in this thesis most applies to are difficult problems that are going to be solved multiple times. BBSAs tailored to one of these problem class can be expected to significantly outperform the more general purpose problem solvers, including canonical Evolutionary Algorithms (EAs). The first paper in this thesis explores a …

Cyber Security Research Frameworks For Coevolutionary Network Defense, George Daniel Rush

Masters Theses

"Cyber security is increasingly a challenge for organizations everywhere. Defense systems that require less expert knowledge and can adapt quickly to threats are strongly needed to combat the rise of cyber attacks. Computational intelligence techniques can be used to rapidly explore potential solutions while searching in a way that is unaffected by human bias.

Several architectures have been created for developing and testing systems used in network security, but most are meant to provide a platform for running cyber security experiments as opposed to automating experiment processes. In the first paper, we propose a framework termed Distributed Cyber Security Automation …

Steam Flooding Screening And Eor Prediction By Using Clustering Algorithm And Data Visualization, Na Zhang

Masters Theses

"Enhanced Oil Recovery (EOR) techniques are vitally important in the oil industry because these techniques could not only extend the life of wells, but also produce 10% to 30% additional oil from the reservoir. However, selecting the most suitable EOR techniques for unknown reservoirs is not easy for decision making. Based on literature, EOR screening criteria could help to find the best candidates for unknown projects, which is classified into two categories: conventional EOR screening and advanced EOR screening. In this research, an artificial intelligent (AI) method, hierarchical clustering algorithm, is adapted to analyze both steam flooding projects and worldwide …

Chemical Quantification With Ubiquitous Optoelectronic Devices, Altamash Mukhtar Fakki

Masters Theses

"Optical sensing in medical diagnosis and chemical analysis using optoelectronic devices is a growing technology since it offers many advantages including real time analysis, remote sensing capability and low cost approach. This thesis demonstrates that an optical sensing platform utilizing optical mouse, the ubiquitous optoelectronic computer peripheral, can be used in quantitative oxygen and pH analysis.

Work in the first paper includes the use of optical mice for fluorescence intensity imaging of commercial oxygen patch. This involves gray color intensity analysis of filtered images to determine the gaseous oxygen level.

In the second paper, the optical mice is used to …

Aerial Vehicle Trajectory Design For Spatio-Temporal Task Satisfaction And Aggregation Based On Utility Metric, Amarender Reddy Mekala

Masters Theses

"Flight trajectories are mainly designed in order to make sure that the aerial vehicle reaches the destination point from the start point. In addition to that, the flight path is designed in such a way that the flight avoids dangerous zones and the maneuvers required for the path are practically feasible for the flight.

This thesis focuses on the aerial vehicle trajectory generation passing through a set of pre-defined way points while satisfying the task points sent by the ground base station in between the way points. Each specified waypoint is reached exactly at the specified location and time. Intermediate …

In Vitro Study Of Wound-Healing Capabilities Of Bioactive Glass Fibers Under Various Culture Conditions, Sisi Chen

Masters Theses

"Bioactive borate glass has been recognized to have both hard and soft tissue repair and regeneration capabilities through stimulating both osteogenesis and angiogenesis. However, the underlying physiological and cellular mechanism behind this function remains unclear. In this study, in vitro dynamic flow modules were designed to mimic the micro-environment near the vascular depletion and hyperplasia area in wound-healing regions, and were used to investigate the biocompatibility and functionality of borate glass nano-/micro-fibers. Glass-cell interactions were investigated either by dosing fibers to the upstream of or co-cultured with cells, and two types of borate glasses (with or without CuO/ZnO doped were …

Sensitivity Of Cellular Oxidative Damage To Biosynthetic Rate And Metabolic Rate, Palihawadana Walauwe Kamalika Kaushalya Amunugama

Masters Theses

"The relationship between energy expenditure and longevity is a long standing question in aging studies. The empirical results have contradictory effects on the existing theories. A theoretical model and an experimental test of it were presented, revealing the detailed tradeoffs between metabolic rate, biosynthetic rate and cellular damage level. The dissipative mechanisms of oxidative metabolism cause various forms of cellular damages. To counteract the accumulation of damage, organisms have evolved highly efficient maintenance mechanisms. If there is no other energy demand possess, then most of the cellular damage would be repaired, regardless of how metabolic rate varies. However, the repairing …

The Electoral Costs Of Party Agenda Setting: Why The Hastert Rule Leads To Defeat, Jesse Richman

Political Science & Geography Faculty Publications

This study demonstrates that unconditional blocking of bills opposed by a majority of the majority party--as implied by the party cartel model and advocated by former Speaker Dennis Hastert--can produce conditions in which the majority party loses popular support and loses elections. The theoretical analysis and empirical results imply that the use of negative agenda power to block bills is circumscribed by this risk of electoral defeat. As a result, the opportunity for effective negative agenda control is conditional on majority party issue advantage, party polarization, and the distribution of status quo locations. In particular, majority party roll rates should …

The Dual Role Of Self-Enhancement : Protection And Stigma, Corina Evelyn Klein

Dissertations and Theses @ UNI

Despite the availability of effective treatment options for posttraumatic stress disorder (PTSD), these treatments are highly under-utilized. One of the most cited barriers to treatment among people with PTSD symptoms is public stigma. In fact, the majority of the population experiences a potentially traumatic event (PTE) in their lifetime and should contribute to an assumption of a lack of stigma toward people with PTSD symptoms. Yet, it may be that the stigma perceived by people with PTSD symptoms is more nuanced than what is seen in stigma for other disorders. More often than not, people who experience a PTE will …

Stars, Stripes, And Swastikas : The American Turners And National Identity, 1935-1945, Amy Rekward

Dissertations and Theses @ UNI

Although German Americans were unable to completely recover from the discrimination endured during World War I, the American Turners proved to be a resilient group. Despite the insistence of some scholars that the German-American community in the United States lost the battle for cultural pluralism, from 1935 to 1945, the American Turners continued to craft and foster a unique Turner identity. Composed of what members perceived to be the best aspects of their German and American identities, the Turner identity allowed American Turners to both valorize their German heritage and present themselves as devoted Americans. My research into the American …

Danish Cedar Falls : The Immigrant Experience, Carrie L. Eilderts

Dissertations and Theses @ UNI

The Danish were the largest immigrant group in Cedar Falls. They immigrated to Cedar Falls and the nearby rural village of Fredsville in large numbers between 1870 and 1900. There they formed an immigrant community. The lived near each other, worshipped together, spoke the same language, and carried on Danish traditions. They farmed, found jobs in Cedar Falls businesses, and opened businesses of their own. By the 1930s, as the first generation of Danish immigrants grew old, the younger generations began to identify more as Americans than as Danes. The elements that characterized the Danish immigrant community began to disappear. …

Predictors Of Racial Prejudice : A Meta-Analysis Of The Influence Of Religion And Political Orientation, Kristin Ann Broussard

Dissertations and Theses @ UNI

The effects of religion and political orientation on racial prejudice are frequently studied yet, to date, no research has compared these effects using meta-analysis. One theory of prejudice that may help to predict outcomes is sociocultural theory (Ashmore & Del Boca, 1981), which posits that social identities provide norms and values that promote cultural stereotypes. Strong social identities such as religion or political orientation may differentially promote outgroup stereotyping and prejudice. The purpose of this study was to determine the impact of religion and political orientation on anti-Black racial prejudice through meta-analysis. 153 independent samples were analyzed with a random …

“Our Navy” : Women Accepted For Voluntary Emergency Service At Iowa State Teacher's College, 1942-1945, Marissa Krein

Dissertations and Theses @ UNI

During World War II, Iowa State Teacher’s College (now known as University of Northern Iowa) was host to the first indoctrination school and later yeomen school (naval secretaries) of the United States Naval Women’s Reserve or the Women Accepted for Voluntary Emergency Service (WAVES). The first class of 1,500 WAVES arrived at Iowa State Teacher’s College (ISTC) in December 1942. The women endured five to six weeks of an intensive introductory training. In April 1943, the indoctrination school was replaced by a yeomen school. The yeomen school remained in operation until it was closed in April 1945. During its twenty-nine …

August Becker And Traditional Vs. Modern Culture In The First Decades Of The Twentieth Century, Michelle Lea Becker Smith

Dissertations and Theses @ UNI

In the first few decades of the twentieth century, American culture changed drastically from the traditional agricultural culture that had sustained it for a century to one that was modern and revolved around the urban landscape, consumer culture, and manufacturing. In this thesis I explore this change in American culture through the life of August Becker, son of a rural German immigrant who chose a life of crime instead of staying in rural Iowa. His life choices are the lens used to explore the changes in American culture through the first decades of the twentieth century.

“God Will Deliver Us” : Human Rights Abuses From Guatemala To Iowa And Back, 1980-2014, Raeann Lillian Swanson

Dissertations and Theses @ UNI

Guatemala’s long internal conflict, the lack of justice, the general poverty, and continued violence since the signing of the 1996 Peace Accords prompt many people to migrate to the United States in search of jobs and opportunities for their family. Since the 1980s, Guatemalans have settled in Postville, Iowa, a small town that is nationally recognized for the ethnically diverse populations that live and work there. In 2008, it was also the site of the largest Immigration Customs Enforcement (ICE) worksite raid to date and the following criminal trials were unprecedented. Because of the tragedy in Postville, sources that detail …

In Connection With All Things : The Memory Of Alexander Humboldt And His Works In The Context Of 19th Century Thought In Europe And America, Ray Joseph Werner

Dissertations and Theses @ UNI

This thesis explores the memory of Alexander von Humboldt, the explorer and philosopher who was known for his travels throughout Europe, Asia, South America, and North America. This paper will examine primary and secondary sources throughout the 19^th and 20^th centuries that mark a change in just how Humboldt was remembered, once as a great thinker, philosopher, and romanticist, then eventually as little more than an empirical scientist. This thesis will contribute to modern understandings of this man by looking at popular publications and writings that track this change over time. It will contribute to the modern understanding …

Caged Manhood : Office Culture And How Walter Camp's Daily Dozen Revitalized The Workforce, 1903-1940, Nick Sly

Dissertations and Theses @ UNI

This thesis is examines how culture became a means to deal with the problems of over-civilization in the early twentieth century. The realities of a salaried position and corporate work spaces had dramatically changed how the middle class felt about work. Looking at the writings of Walter Camp, the human relations movement, and the exercise culture of the period one can see how the office space was not simply a place of work but a new context for constructing masculinity and a sense of worth.

Different Levels Of Negative Emotions And Their Impact On Prosocial Behavior, Tsamchoe Dolma

Dissertations and Theses @ UNI

In this fast and competitive world, people are becoming less likely to help others. According to the Bureau of Labor Statistics (2014), the volunteerism rate reached the lowest point in 2013 since 2002. This decrease in prosocial behavior makes the study of prosocial behavior important, especially with the increasing numbers of charitable organizations and their competition to attract more donors and volunteers. Public service advertisements (PSA) are used as a common medium to garner help and support, and many of them use emotional appeals to enhance persuasion. The literature on persuasion shows that emotions have persuasive power to change people's …