Barrett, The Honors College at Arizona State University proudly showcases the work of undergraduate honors students by sharing this collection exclusively with the ASU community.

Barrett accepts high performing, academically engaged undergraduate students and works with them in collaboration with all of the other academic units at Arizona State University. All Barrett students complete a thesis or creative project which is an opportunity to explore an intellectual interest and produce an original piece of scholarly research. The thesis or creative project is supervised and defended in front of a faculty committee. Students are able to engage with professors who are nationally recognized in their fields and committed to working with honors students. Completing a Barrett thesis or creative project is an opportunity for undergraduate honors students to contribute to the ASU academic community in a meaningful way.

Displaying 1 - 10 of 33
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Description
Pacemakers in the early 1970s were powered by betavoltaic devices which provided long lasting battery life. The betavoltaic devices also emitted gamma radiation due to inadvertent radioisotope contamination, which could not be completely shielded. The betavoltaic devices were quickly replaced by lithium batteries after their invention, and betavoltaics were abandoned.

Pacemakers in the early 1970s were powered by betavoltaic devices which provided long lasting battery life. The betavoltaic devices also emitted gamma radiation due to inadvertent radioisotope contamination, which could not be completely shielded. The betavoltaic devices were quickly replaced by lithium batteries after their invention, and betavoltaics were abandoned. Modern technological advancements made it possible to isolate beta emitting radioisotopes properly and achieve better energy conversion efficiencies which revived the topic of betavoltaics. This research project has studied state-of-the-art pacemakers and modern radioactive power sources in order to determine if modern pacemakers can be safely nuclear powered and if that is a reasonable combination.
ContributorsAwad, Al-Homam Abdualrahman (Author) / Holbert, Keith (Thesis director) / Aberle, James (Committee member) / Barrett, The Honors College (Contributor) / Electrical Engineering Program (Contributor)
Created2014-12
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Description
Generally, increasing the electrical size of an antenna will increase the directivity of the antenna. In the case of an array of identical antennas with uniform spacing, the electrical size can be increased by increasing the number of elements. However, directivity can be further increased by performing signal processing on

Generally, increasing the electrical size of an antenna will increase the directivity of the antenna. In the case of an array of identical antennas with uniform spacing, the electrical size can be increased by increasing the number of elements. However, directivity can be further increased by performing signal processing on the signals received by elements of an antenna array. This thesis focuses primarily on reproducing and expanding upon a method to increase the directivity of a two-element array using non-linear transmission lines periodically loaded with varactor diodes, which act as harmonic multipliers. Simulation and circuit design is performed using Keysight Advanced Design System, a microwave circuit simulation software package. Furthermore, a hardware implementation is discussed and recommendations are made for construction of the hardware array. Finally, possible expansion of the two-element array to a four or more element array is discussed, and preliminary simulations are examined.
ContributorsHanson, Elliot (Author) / Diaz, Rudolfo (Thesis director) / Aberle, James (Committee member) / Barrett, The Honors College (Contributor) / School of Electrical, Computer, and Energy Engineering (Contributor)
Created2015-05
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Description
Abstract Older adults and people with disabilities are two unique populations, though they intersect in their need for mobility options that are often not met by traditional transportation services. There is consensus that the government should provide assistance for older adults and people with disabilities to achieve and maintain independence.

Abstract Older adults and people with disabilities are two unique populations, though they intersect in their need for mobility options that are often not met by traditional transportation services. There is consensus that the government should provide assistance for older adults and people with disabilities to achieve and maintain independence. However, the challenge lies in addressing the many forms of mobility inequity. Population projections for the twenty-first century have sparked interest in the rights of these two populations. As the population of the United States of America ages, supporting the mobility of seniors and individuals with disabilities will become imperative to maintaining their quality of life. One existing federal grant, Section 5310: Enhanced Mobility for Seniors and Individuals with Disabilities (49 U.S.C. 5310) provides formula funding for services that provide transportation options to older adults and people with disabilities. While the 5310 program provides crucial funding to non-profits and government agencies to support mobility options for older adults and people with disabilities, it does not address the full scope of mobility issues faced by these two communities. This thesis project provides a thorough analysis of this grant from the federal legislation it is founded on, to the local administration of this grant as applied by the Maricopa Association of Governments (MAG). Finally, this thesis looks at emerging technology with the potential to revolutionize mobility, along with sobering historical context of the barriers faced older adults and people with disabilities.
ContributorsValencia, Martin J. (Author) / Kelley, Jason (Thesis director) / Voorhees, Matthew (Committee member) / School of Sustainability (Contributor) / School of Geographical Sciences and Urban Planning (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
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Description
A hybrid PV/T module was built, consisting of a thermal liquid heating system and a photovoltaic module system that combine in a hybrid format. This report will discuss the work on the project from Fall 2012 to Spring 2013 and the extended section on the economics for the Honors Thesis.

A hybrid PV/T module was built, consisting of a thermal liquid heating system and a photovoltaic module system that combine in a hybrid format. This report will discuss the work on the project from Fall 2012 to Spring 2013 and the extended section on the economics for the Honors Thesis. Three stages of experiments were completed. Stage 1 showed our project was functional as we were able to verify our panel produced electricity and increased the temperature of water flowing in the system by 0.65°C. Stage 2 testing included “gluing” the flow system to the back of the panel resulting in an average increase of 4.76°C in the temperature of the water in the system. Stage 3 testing included adding insulating foam to the module which resulted in increasing the average temperature of the water in our flow system by 6.95°C. The economic calculations show the expected energy cost savings for Arizona residents.
ContributorsHaines, Brent Robert (Author) / Roedel, Ronald (Thesis director) / Aberle, James (Committee member) / Rauch, Dawson (Committee member) / Barrett, The Honors College (Contributor) / Electrical Engineering Program (Contributor)
Created2013-05
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Description
A hybrid PV/T module was built, consisting of a thermal liquid heating system and a photovoltaic module system that combine in a hybrid format. This report will discuss the work on the project from Fall 2012 to Spring 2013. Three stages of experiments were completed. Stage 1 showed our project

A hybrid PV/T module was built, consisting of a thermal liquid heating system and a photovoltaic module system that combine in a hybrid format. This report will discuss the work on the project from Fall 2012 to Spring 2013. Three stages of experiments were completed. Stage 1 showed our project was functional as we were able to verify our panel produced electricity and increased the temperature of water flowing in the system by 0.65°C. Stage 2 testing included “gluing” the flow system to the back of the panel resulting in an average increase of 4.76°C in the temperature of the water in the system. Stage 3 testing included adding insulating foam to the module which resulted in increasing the average temperature of the water in our flow system by 6.95°C.
ContributorsDenke, Steven Michael (Author) / Roedel, Ron (Thesis director) / Aberle, James (Committee member) / Rauch, Dawson (Committee member) / Barrett, The Honors College (Contributor) / Electrical Engineering Program (Contributor)
Created2013-05
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Description
In modern remote sensing, arrays of sensors, such as antennas in radio frequency (RF) systems and microphones in acoustic systems, provide a basis for estimating the direction of arrival of a narrow-band signal at the sensor array. A Uniform linear array (ULA) is the most well-studied array geometry in that

In modern remote sensing, arrays of sensors, such as antennas in radio frequency (RF) systems and microphones in acoustic systems, provide a basis for estimating the direction of arrival of a narrow-band signal at the sensor array. A Uniform linear array (ULA) is the most well-studied array geometry in that its performance characteristics and limitations are well known, especially for signals originating in the far field. In some instances, the geometry of an array may be perturbed by an environmental disturbance that actually changes its nominal geometry; such as, towing an array behind a moving vehicle. Additionally, sparse arrays have become of interest again due to recent work in co-prime arrays. These sparse arrays contain fewer elements than a ULA but maintain the array length. The effects of these alterations to a ULA are of interest. Given this motivation, theoretical and experimental (i.e. via computer simulation) processes are used to determine quantitative and qualitative effects of perturbation and sparsification on standard metrics of array performance. These metrics include: main lobe gain, main lobe width and main lobe to side lobe ratio. Furthermore, in order to ascertain results/conclusions, these effects are juxtaposed with the performance of a ULA. Through the perturbation of each element following the first element drawn from a uniform distribution centered around the nominal position, it was found that both the theoretical mean and sample mean are relatively similar to the beam pattern of the full array. Meanwhile, by using a sparsification method of maintaining all the lags, it was found that this particular method was unnecessary. Simply taking out any three elements while maintaining the length of the array will produce similar results. Some configurations of elements give a better performance based on the metrics of interest in comparison to the ULA. These results demonstrate that a sparsified, perturbed or sparsified and perturbed array can be used in place of a Uniform Linear Array depending on the application.
ContributorsSilbernagel, Drake Oliver (Author) / Cochran, Douglas (Thesis director) / Aberle, James (Committee member) / Electrical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
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Description
This paper explores whether American football player Colin Kaepernick and other athletes’ refusal in 2016 to acknowledge the national anthem symbolizes a form of nationalism in the United States. At first glance, the rising support of “un-American” acts that reject traditional patriotism would imply that American nationalism is faltering. If

This paper explores whether American football player Colin Kaepernick and other athletes’ refusal in 2016 to acknowledge the national anthem symbolizes a form of nationalism in the United States. At first glance, the rising support of “un-American” acts that reject traditional patriotism would imply that American nationalism is faltering. If one observes the colloquial understanding of nationalism as extreme commitment to a country, this may be true. But after closer examination, the pattern instead depicts a polarization of two distinct forms of nationalism — ethnocentric nationalism and what I call multicultural nationalism, both intensifying away from each other.
As opposed to colloquial understanding, there is no standard scholarly definition of nationalism, but it is widely seen as zeal over an identity that strives to manifest into an organized state. Despite this minimal consensus, nationalism is usually equated with an ethnocentric conception of the nation-state, what I recognize to be ethnocentric nationalism, the commitment to a linguistically, racially, and culturally likeminded nation. I argue that this traditional, ethnocentric understanding of nationalism is only one interpretation of nationalism. Ethnocentric nationalism has and continues to be in tension with a more recently established interpretation of the nation, which I call multicultural nationalism: the commitment to a country’s principles rather than to its racial, cultural, and religious ties.

A common acceptance of difference is growing in the United States as shown by Kaepernick’s public support in the face of patriotic conformity. This perspective draws from the United States’ ideological roots that argue for one nation made up of many, e pluribus unum, so that foreign backgrounds should not just be accepted but also embraced to form a more diverse nation. The passion for a progressive, multicultural America can be translated into its own movement of multicultural nationalism. In this context, the support for Kaepernick’s actions no longer appears to represent increased dissent from the United States, but instead seems to be an attempt to challenge ethnocentric nationalism’s claim to the nation.

This paper will begin by contrasting the reactions to Kaepernick’s protest and to protests before him in order to contend that nationalism is no longer characterized by only ethnocentric tradition. I will analyze theoretical studies on nationalism to dispute this common understanding that nationalism is solely ethnocentric. I will argue that nationalism, rather, is the intense manifestation of a community’s identity within a political state; the identity of which can be either ethnocentric or multicultural. The Kaepernick ordeal will be used to signify the greater division in the American public over whether a multicultural or ethnocentric conception of the nation should be supported in the United States. Lastly, this paper will observe how the Kaepernick protest suggests multicultural nationalism’s viability in today’s politically progressive environment, and how multiculturalism should embrace nationalism to advance its platform.
ContributorsFite, Owen Gunehame (Author) / Suk, Mina (Thesis director) / Voorhees, Matthew (Committee member) / School of Politics and Global Studies (Contributor, Contributor) / W. P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
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Description
This thesis explores European identity through the European Union and the Eurovision Song Contest using Michael Walzer’s hyphenated American identity by expanding his argument to the EU, culture, and broadening the definition of diversity. Walzer had three main points about the American identity that makes it unique. First, a hyphen

This thesis explores European identity through the European Union and the Eurovision Song Contest using Michael Walzer’s hyphenated American identity by expanding his argument to the EU, culture, and broadening the definition of diversity. Walzer had three main points about the American identity that makes it unique. First, a hyphen with a many side and a one side exist with no expectation of assimilation. Second, the should be a hyphen and can be emphasized. Third, there are unsuccessful patriotic fevers. On the political level, the EU has a hyphenated identity but fails with expectations of assimilation and successful patriotic fevers like Brexit. Walzer does not examine the cultural aspect of identity, this is where this thesis goes beyond his idea in examining European identity in the cultural institution of Eurovision. The literature and winning songs confirm that a hyphenated identity exists in Eurovision. I sorted the winning songs into three categories of diversity, national identity, and neutral. I did not reject two of my hypotheses, there were more neutral songs, and songs in diversity and national identity became common after 1992. The hypothesis I rejected was that national identity songs would be more common than diversity songs, this was not the case. I used Ukraine 2004 for diversity and Greece 2005 for national identity case studies. Overall, when there is a United States of Europe its identity will be the same as Walzer’s American identity. It is just not there yet, but with further European integration, it will.
Created2019-05
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Description
A rapidly evolving technological environment has enabled the exponential expansion of creative opportunities for artists. Major developments in the digital landscape have impacted the world of music creation, namely the unprecedented rise of the remix. However, copyright laws have failed to keep up with the new ways in which musicians

A rapidly evolving technological environment has enabled the exponential expansion of creative opportunities for artists. Major developments in the digital landscape have impacted the world of music creation, namely the unprecedented rise of the remix. However, copyright laws have failed to keep up with the new ways in which musicians are interacting with technology. Although the last amendments to the Copyright Act were made well before the digital age, the same laws from 1976 still govern the digital activities of today. This leaves forty years of technological developments largely unaccounted for, including the advancements that have led to the emergence of the remix. This paper will first address the value of remixing in the advancement of the Electronic Dance Music genre by outlining the history of sampling and remixing, and will discuss the existing copyright doctrine and the various issues that have arisen within copyright law. It will then seek to develop potential solutions that strike a fair and equitable balance between the owners of intellectual property and the ever-increasing universe of homegrown creative artists. The days where remix artists are per se ‘copyright criminals’ should be numbered, for the greater good of all participants in the rapidly expanding worldwide web of music, musicians and music lovers, whether they be consumers, creators or recreators.
ContributorsFromm, Emilie Georgina (Author) / Schmidt, Peter (Thesis director) / Voorhees, Matthew (Committee member) / W. P. Carey School of Business (Contributor) / Department of Marketing (Contributor) / Department of Management and Entrepreneurship (Contributor) / Barrett, The Honors College (Contributor)
Created2017-12
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Description
Remotely controlled flying vehicles such as UAVs are becoming more common due to decreases in material costs and increases in performance of components. Radio control link options, however, have not improved at the same rate as airframes, motors, flight controllers, etc [HobbyKing]. Most UAVs require a radio link, often at

Remotely controlled flying vehicles such as UAVs are becoming more common due to decreases in material costs and increases in performance of components. Radio control link options, however, have not improved at the same rate as airframes, motors, flight controllers, etc [HobbyKing]. Most UAVs require a radio link, often at 2.4 GHz, for flight control, and a second link at 915 MHz for telemetry data transmission [HobbyKing]. Occasionally there is also a video link at either 2.4 GHz or 5.8 GHz. Having multiple transmitters increase power usage from the limited battery reserve that the UAV carries. It also increases weight and space used on the airframe. In addition, the 2.4 GHz band is often congested [ISM Congestion] and does not provide as great a range for a given transmission power as lower frequencies do [Wu]. Attempting to reduce space and weight, power consumption, and simplify design, while increasing control and telemetry range requires the design, testing, and implementation of a radio link that handles both real-time flight control and telemetry with the same transceiver. Only the flight control and telemetry will be addressed in this project. Merging and/or improving the video link will not be tackled at this time in order to simplify project goals to fit inside time constraints. The new radio link system will be verified for functionality then power and range test data will be gathered to determine how effective it is.
ContributorsPortillo-Wightman, Gabrielle Raquel (Author) / Goryll, Michael (Thesis director) / Aberle, James (Committee member) / Electrical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2017-12