Digital Commons Network^™

Analysis Of Wind Power Generation With Application Of Wind Tunnel Attachment, Ulan Dakeev

Dissertations and Theses @ UNI

This study presents an empirical method for developing a new approach in which a wind tunnel apparatus is used to improve the efficiency of power output by a small-scale wind turbine. A custom-designed wind tunnel attachment was constructed to record, analyze, and interpret both incoming and outgoing wind velocity readings. Moreover, the dissertation project addresses a significant issue concerning the power generation of an experimental wind turbine while the wind tunnel is attached. Wind power characteristics that indicate power output versus wind velocity were obtained by performing a number of case studies. The case studies included normal operation of the …

Evaluating The Effects Of Increasing Mathematics Graduation Requirements: A Survey Of The Effects Of State Policy Change In Illinois, Corey Tafoya

Dissertations and Theses @ UNI

In the summer of 2005, Illinois lawmakers made the decision to elevate the graduation standards for students, joining an increasing number of states who decided current requirements in their state were insufficient. This legislation affected aspects of English, science, and mathematics. The most significant change resulted in the increase of mathematics study from two years of mandatory study to three years in order to graduate. Any district that did not already require students to take three years had to decide how to react to this new requirement. This quantitative research study was designed to examine what effects this change had …

Leading Through Change: A Study Of The Role Of Central Office Leadership In The Process Of Secondary Change, Dirk A. Halupnik

Dissertations and Theses @ UNI

The purpose of this study was to more fully understand the actions of district level leaders in a major change effort and their effects on the change process. Furthermore this study aimed to provide additional information about the factors that school district central office administrators confront when making the decision to add another high school and the actions taken by these administrators to lead the district through this process so that other school districts and leaders may learn from this. The methodology for this study was a qualitative case study approach in which central office leaders in a district that …

Understanding The Critical Role Of A Wetland In Maintaining The Ecosystem: A Case Study, Sushil Tuladhar

Dissertations and Theses @ UNI

Beaver Valley Wetland in north-east Iowa was studied to determine its functionality in filtering incoming contaminants from the surrounding agricultural fields. The study was conducted from May through November of 2011. Altogether 78 water samples (from 13 sites), 84 soil samples (from 14 sites), and some sediment samples were collected for chemical analysis. Heavy metals in three different soil categories, such as surface, 6” deep, and sediments were found to be at or below the acceptable concentrations, indicating no immediate concern for metal toxicity in the wetland environment. The chemical tracers that were used to study the sub-surface flow regime …

Our Place In The World: A New Relationship For Environmental Ethics And Law, Jedediah S. Purdy

Faculty Scholarship

Forty years ago, at the birth of environmental law, both legal and philosophical luminaries assumed that the new field would be closely connected with environmental ethics. Instead, the two grew dramatically apart. This Article diagnoses that divorce and proposes a rapprochement. Environmental law has always grown through changes in public values; for this and other reasons, it cannot do so without ethics. Law and ethics are most relevant to each other when there are large open questions in environmental politics: lawmakers act only when some ethical clarity arises; but law can itself assist in that ethical development. This process is …

Climate Change Action Without Congress, Michael B. Gerrard

Faculty Scholarship

Congress has not enacted major environmental legislation since 1990, and no end to the paralysis is in sight. Nonetheless, there is a great deal that the Obama Administration can do with its existing statutory powers to fight climate change.

Federal Executive Actions To Combat Climate Change, Michael B. Gerrard

Faculty Scholarship

“I urge this Congress to pursue a bipartisan, market-based solution to climate change, like the one John McCain and Joe Lieberman worked on together a few years ago. But if Congress won’t act soon to protect future generations, I will. I will direct my cabinet to come up with executive actions we can take, now and in the future, to reduce pollution, prepare our communities for the consequences of climate change, and speed the transition to more sustainable sources of energy.”
—President Barack Obama State-of-the-Union Message Feb. 12, 2013

In the current partisan atmosphere in Washington, there appears to be …

Reducing Legal Hurdles To Combined Heat And Power In New York, Michael B. Gerrard

Faculty Scholarship

Combined heat and power (CHP or cogeneration) is the simultane­ous production of electricity and thermal energy from a single fuel source. Most CHP systems in New York City use natural-gas fired turbines or reciprocating engines to generate electric­ity and then capture heat from the com­bustion generator’s exhaust stream and cooling systems.

Functional Implications Of Impaired Control Of Submaximal Hip Flexion Following Stroke, Allison S. Hyngstrom, Sandra K. Hunter

Exercise Science Faculty Research and Publications

Introduction: We quantified sub-maximal torque regulation during low to moderate intensity isometric hip flexion contractions in individuals with stroke and the associations with leg function. Methods: 10 participants with chronic stroke and 10 controls performed isometric hip flexion contractions at 5%, 10%, 15%, 20%, and 40% of maximal voluntary contraction (MVC) in paretic, non-paretic, and control legs. Results: Participants with stroke had larger torque fluctuations (coefficient of variation, CV), for both the paretic and non-paretic legs, than controls (Pr² =0.45) and Berg Balance Score (r²=0.38). At 5% MVC, there were larger torque fluctuations in the …

White Matter Structural Connectivity Is Associated With Sensorimotor Function In Stroke Survivors, Benjamin Kalinosky, Sheila M. Schindler-Ivens, Brian D. Schmit

Biomedical Engineering Faculty Research and Publications

Purpose

Diffusion tensor imaging (DTI) provides functionally relevant information about white matter structure. Local anatomical connectivity information combined with fractional anisotropy (FA) and mean diffusivity (MD) may predict functional outcomes in stroke survivors. Imaging methods for predicting functional outcomes in stroke survivors are not well established. This work uses DTI to objectively assess the effects of a stroke lesion on white matter structure and sensorimotor function.

Methods

A voxel-based approach is introduced to assess a stroke lesion's global impact on motor function. Anatomical T1-weighted and diffusion tensor images of the brain were acquired for nineteen subjects (10 post-stroke and 9 …

Using Design Experiments To Conduct Research On Mathematics Professional Development, Paola Sztajn, Holt Wilson, Cyndi Edgington, M Myers, Lara Dick

Faculty Journal Articles

In this paper, we propose that the emerging transformation of mathematics professional development from a practice-based to a research field would benefit from stronger connections to research on learning. In particular, we contend that design experiments represent a premier emerging methodology to study learning, and we argue that a better understanding of teacher learning through the use of design experiments in mathematics professional development can lead to improvement of mathematics professional development as both an area of practice and a field of research.

Ethnography On The Road: Infrastructural Vision And The Unruly Present In Contemporary Dakar, Caroline Melly

Anthropology: Faculty Publications

No abstract provided.

Joseph F. Smith And The First World War: Eventual Support And Latter-Day Saint Chaplains, Kenneth L. Alford Ph.D.

Faculty Publications

A discussion of the calling of three Latter-day Saint (Mormon) U.S. Army chaplains who served during World War I and support for the war from President Joseph F. Smith, President of The Church of Jesus Christ of Latter-day Saints.

Versatile Rb Vapor Cells With Long Lifetimes, John F. Hulbert, Matthieu Giraud-Carrier, Tom Wall, Aaron R. Hawkins, Scott D. Bergeson, Jennifer Black, Holger Schmidt

Faculty Publications

The authors report on an approach to the construction of long-lasting rubidium atomic vapor cells. The method uses pinch-off copper cold-welds, low temperature solders, and electroplated copper to create long-lasting hermetic seals between containment chambers of dissimilar geometries and materials. High temperature epoxy, eutectic lead/tin solder, and indium solder were considered as sealing materials. These seals were analyzed using accelerated lifetime testing techniques. Vapor cells with epoxy and bare metal solder seals had a decrease in the rubidium atomic density within days after being heated to elevated temperatures. They also exhibited broadened spectra as a result of rubidium reacting with …

Measuring The Reader Self-Perceptions Of Adolescents: Introducing The Rsps2, Bill Henk, Barbara A. Marinak, Steven A. Melnick

College of Education Faculty Research and Publications

This paper introduces a new affective instrument for assessing the reader self-perceptions of students in grades seven through ten. The Reader Self-Perception Scale 2 (RSPS2) builds upon its predecessor, the RSPS, a tool that measures the reading efficacy beliefs of children in grades four through six. New items were created for the RSPS2 to reflect differences in the expectations for adolescent reading. The instrument was piloted on 488 students, revised, and then validates with an additional 2,542 students in the target grades. Factor analytic procedures revealed four factors emerging on the RSPS2. Items for Progress, Observational Comparison, Social Feedback, and …

Aspiring To Become A Therapist: Personal Strengths And Challenges, Influences, Motivations, And Expectations Of Future Psychotherapists, Clara E. Hill, Andrea Lystrup, Kathryn Kline, Nioud M. Gebru, Jennifer Birchler, Geoffrey Palmer, Jennifer Robinson, Miji Um, Shauna Griffin, Elisabeth Lipsky, Sarah Knox, Kristen Pinto-Coelho

College of Education Faculty Research and Publications

Ten female students who were considering therapy as a career path wrote self-reflection papers and were interviewed regarding their career choice. Consensual qualitative research was used to analyze the data. These participants all indicated a passion for helping others, believed in the importance of giving back, and had prior experiences in helping activities. They considered themselves to have personal helping-related strengths (e.g. empathy) as well as challenges (e.g. avoidance of interpersonal conflict), and worried about potential problems they would encounter as therapists (e.g. being too emotionally invested). Participants expressed both other-oriented (e.g. to help others who had similar painful experiences) …

Comments On Alrc Discussion Paper 79, Copyright And The Digital Economy, June M. Besek, Jane C. Ginsburg, Philippa Loengard

Faculty Scholarship

We provide these comments in connection with the Australian Law Reform Commission’s ongoing study of copyright and the digital economy, and in particular its request for comments on the recommendations put forth in its Discussion Paper 79 (June 2013). We focus on US law, and how the US experience bears on the possibility of an open-ended uncompensated "fair use" type exception in Australia, and other related issues.

The fair use doctrine in the US provides great flexibility, but that flexibility in many instances comes at the cost of certainty and predictability. We are not suggesting that reasonable judgments cannot be …

Actual Malice In The Inter-American Court Of Human Rights, Edward L. Carter

Faculty Publications

The Inter-American Court of Human Rights decided four cases in recent years that represent a positive step for freedom of expression in nations that belong to the Organization of American States. In 2004 and again in 2008, the court stopped short of adopting a standard that would require proof of actual malice in criminal defamation cases brought by public officials. In 2009, however, the court seemed to adopt the actual malice rule without calling it that. The court’s progress toward actual malice is chronicled in this article. The article concludes that the court’s decision not to explicitly use …

“I Will Bless The Lord At All Times”: Blessing God In The Old Testament, Dana M. Pike

Faculty Publications

Because of his love for them, God is disposed to bless all his children to some extent (see Matthew 5:45). However, in addition to God’s graciously bestowed blessings on all people, many divine blessings are primarily relationship dependent; that is, existing in a particular relationship with God allows one to obtain certain blessings that are often greater than those bestowed upon someone outside such a relationship.1 The Bible indicates that by his power God blessed Adam and Eve (Gen 1:22, 28) and their faithful descendants, including Noah, Abraham, Sarah, and many others. For example, after Noah’s family left their ark, …

Analysis Of Integrated Engineering And Social Science Approaches For Projects In Developing Communities, Parry F. Garff, Eric C. Dahlin, Carol Ward, Randy Lewis

Faculty Publications

Current design methods such as appropriate technology, human-centered design, and participatory design are intended to generate development projects that resonate with users in communities in developing countries. These approaches are extremely useful, but often lack adequate documentation about how to collect data on and incorporate users feedback into the project’s design. To address this gap, we introduced social science research methods into a service-learning course for undergraduate engineering students, which culminated in a trip to the communities for whom they were designing, to help students incorporate user feedback into the design of their projects. This paper documents our efforts. One …

Final Report: Multipath Modeling And Mitigation Using Multiple Antennas (M4a), Michael Rice

Faculty Publications

This report documents the effort under contract W900KK-09-C-0016. The contract comprised four phases spanning 15 April 2009 to 1 December 2012. The relationship between the effort associated with each phase and the contents of this report are as follows: Phase 1 was devoted exclusively to the channel sounding experiments with the UH-1H helicopter. The experimental setup, procedure, and results for the channel sounding experiments at Cairns Army Airfield and Patuxent River are described in Chapter 2. Good, usable data at upper L-band was captured during the Cairns Army Airfield experiments. Phase 2 was devoted to the channel sounding experiments with …

The Mormon Influence At Disney, J. Michael Hunter

Faculty Publications

“The Mormon Influence at Disney,” provides a history of Mormons—members of The Church of Jesus Christ of Latter-day Saints (LDS Church)— involved with the Walt Disney Company, including animators, composers, and administrators. Beginning with cartoonist Floyd Gottfredson’s influence on the development of Mickey Mouse, the history continues with the influence of animators like Eric Larson, Les Clark, Judge Whitaker, Scott Whitaker, Don Bluth, and Richard Rich. Beginning as an animator on Snow White and the Seven Dwarfs, Larson went on to become a member of the Disney Studio’s powerful board known as “the nine old men.” Mormon composers covered …

Supercritical Co2 Brayton Cycles For Solar-Thermal Energy, Brian D. Iverson, Thomas M. Conboy, James J. Pasch, Alan M. Kruizenga

Faculty Publications

Of the mechanisms to improve efficiency for solar-­‐thermal power plants, one of the most effective ways to improve overall efficiency is through power cycle improvements. As increases in operating temperature continue to be pursued, supercritical CO2 Brayton cycles begin to look more attractive despite the development costs of this technology. Further, supercritical CO2 Brayton has application in many areas of power generation beyond that for solar energy alone.

One challenge particular to solar-­‐thermal power generation is the transient nature of the solar resource. This work illustrates the behavior of developmental Brayton turbomachinery in response to a fluctuating thermal input, much …

Technological Innovation, International Competition, And The Challenges Of International Income Taxation, Michael J. Graetz, Rachael Doud

Faculty Scholarship

Because of the importance of technological innovation to economic growth, nations strive to stimulate and attract the research and development ("R&D") that leads to that innovation and to make themselves hospitable environments for the holding of intellectual property ("IP"). Tax policies have taken center stage in their efforts to accomplish these goals and to capture a share of the income from technological innovations.

Designing cost-effective methods of supporting technological innovations has, however, become substantially more difficult as the world economy has become more interconnected. Where R&D is performed and where income is earned change in response to the nature and …

Free From Jazz: The Jazz And Improvised Music Scene In Vienna After Ossiach (1971-2011), Thomas Albert Zlabinger

Dissertations, Theses, and Capstone Projects

Focusing on a diverse and eclectic scene that is under-documented, this dissertation investigates the historical, social, and cultural aspects of jazz and improvised music in Vienna over the last four decades. Through fieldwork, I have observed various characteristics and trends regarding the jazz and improvised music scene in Vienna and have subsequently organized the musicians and their recordings into seven fluid "fields": Traditional-U.S. Performance, Post-Tradition, DJ/Hip-Hop, Volk/Ethnic, Cabaret, Unclassified, and Abroad. One of the most striking aspects of the entire scene is the near-absence of a racialized discourse among musicians and critics and of stereotypical markers of "blackness" in performance. …

Children And Elephants: A Study Of Mentalization, Empathy, And Attitudes Towards Conservation In Participants Of An Elephant-Based Environmental Intervention In West Africa, Erica C. Rogers

Dissertations, Theses, and Capstone Projects

Recent research suggests that children's identification with animals and propensity to learn from animal experiences might make animal-focused interventions ideal for social and emotional development. A child's ability to understand their own and others' feeling states has been linked to emotional resilience and has been identified as a protective factor against the development of pathology later in life (Allen & Fonagy, 2006). This study examined the impact of an ongoing conservation-based intervention in Burkina Faso on conservation attitudes, mentalization and empathy. Participants were 106 Burkinabe students, 56 male and 50 female, ages 9-15. Participants were split into four groups, a …

Are Black Girls The New Number Runners? An Analysis Of Black Girls And High School Mathematics, Carolyn Denise King

Dissertations, Theses, and Capstone Projects

According to the National Science Foundation (NSF), one out of every 100 employed scientists and engineers in the United States is a Black female. This statistic prompts the examination of Black females and mathematics. How do individual-level (educational aspirations), familial-level (support), and school-level (school characteristics) variables impact Black female students' proficiency in high school mathematics as well as predict their enrollment in postsecondary math courses?

Employing four waves from the National Education Longitudinal Study (1988, 1990, 1992, & 1994), this study seeks to add to the discourse on achievement in mathematics by examining factors which impact outcomes in mathematics for …

Refugees And Resistance: International Activism For Grassroots Democracy And Human Rights In New York, Miami, And Haiti, 1957 To 1994, Carl Lindskoog

Dissertations, Theses, and Capstone Projects

This dissertation explores the evolution of political activism among Haitians in the United States from the formation of Haitian New York in the late 1950s to the return of Haitian President Jean-Bertrand Aristide to Haiti in 1994. It traces the efforts of Haitian activists to build bridges connecting New York and Miami to the grassroots organizations in Haiti, finding a considerable degree of success in their efforts to construct a transnational movement that had a substantial impact both in Haiti and in the United States. Shedding additional light on the interconnected history of Haiti and the United States, this dissertation …

Who Governs The Internet? The Emerging Policies, Institutions, And Governance Of Cyberspace, Robert J. Domanski

Dissertations, Theses, and Capstone Projects

There remains a widespread perception among both the public and elements of academia that the Internet is "ungovernable". However, this idea, as well as the notion that the Internet has become some type of cyber-libertarian utopia, is wholly inaccurate. Governments may certainly encounter tremendous difficulty in attempting to regulate the Internet, but numerous "architectures of control" have nevertheless become pervasive. So who, then, governs the Internet? Our contentions are that the Internet is, in fact, being governed; that it is being governed by specific and identifiable networks of policy actors; and that an argument can be made as to how …

How Does Alignment Of Business And It Strategies Impact Aspects Of It Effectiveness?, Shankar Babu Chebrolu, Lawrence Ness

International Journal of Applied Management and Technology

Alignment between information technology (IT) and business stakeholders on their strategies has traditionally been viewed as the means to achieve greater IT delivery capabilities, but there is lack of empirical evidence as to how strategic alignment impacts individual aspects of IT effectiveness (e.g., quality of service [QoS], user satisfaction, and IT helpfulness to users); there is also a lack of empirical evidence surrounding how each individual element of strategic alignment impacts overall IT effectiveness. The intent of this research was to contribute to the body of knowledge that could be applied by researchers, businesses, and IT organizations alike to achieve …