• The 150-Hour Rule: How Policy Decisions Affect the Supply of Public Accountants

      McLeod, Martha Lamb (The University of Arizona., 2011-05)
    • 17β Estradiol Decreases Vasodilation at 31°C in Ovariectomized Rats

      Brown, Jessica Nicole (The University of Arizona., 2010-05)
      The purpose of this Honor's Thesis is to investigate rat heat dissipation in correlation with estradiol (commonly referred to as estrogen) at different environmental (ambient) temperatures. The relevance of this study is investigative of post-menopausal hot flushes as a thermoregulatory dysfunction.
    • The 1979 Iranian revolution: the revolutionary revolution

      Brandis, Dov Asher (The University of Arizona., 2009-05)
    • 2-HYDROXYETHYL HYDRAZINE AND HYDRAZINE HYDRATE PLANT DESIGN

      Hsu, Ivann Hong; Emerson, Joanna; Wong, Andrew; Zinsli, Phillip (The University of Arizona., 2009-05)
    • 2-HYDROXYETHYLHYDRAZINE (HEH) PLANT DESIGN

      Zinsli, Phillip Alexander (The University of Arizona., 2009-05)
    • 2-HYDROXYETHYLHYDRAZINE (HEH) PLANT DESIGN

      Emerson, Joanna Louise (The University of Arizona., 2009-05)
    • The 2012 Presidential Election Gender Gap

      Norrander, Barbara; Caicedo, Andrea (The University of Arizona., 2015)
      The gender gap in presidential elections has been an important part of American politics for the past decades. This phenomenon in politics refers to the differences of men and women in party identification and voting behavior. This paper explains the origins of the gender gap dating back to the 1980s. It explains the patterns and analyzes the most significant issues in each presidential election. Finally, it analyzes the gender gap in the 2012 presidential election. It focuses on the issues that had the biggest difference and it explains why some issues are more susceptible to having a greater gender gap.
    • 2015-2016 UA|ASME HUMAN POWERED VEHICLE PROJECT: MAGNUM

      Pine, Gerald; LEISTER, DAVID EDWARD (The University of Arizona., 2016)
      The American Society of Mechanical Engineers (ASME) hosts the annual Human Powered Vehicle Challenge (HPVC), in which student design teams from universities and colleges around the world design, build, and compete human powered vehicles. A human powered vehicle is just any vehicle whose motive power comes from the exertion of its driver(s). The University of Arizona’s (UA) entry in the 2016 HPVC West, Magnum, succeeds Blue Steel (2013), Le Tigre (2014), and Ferrari (2015). It is the most ambitious project undertaken by the UA human powered vehicle team, featuring a carbon fiber/aluminum hybrid frame and full fairing, and a custom built steering system. An onboard electronics suite includes turn signals, a traffic horn, and a novel Roll Alert System, an Android app developed by the team to alert everyone in the event of a vehicle rollover or crash. Both the mechanical and electronic systems were designed and built from the ground up by this year’s team. Magnum is also the best-performing UA human powered vehicle in recent history, earning Top 10 ranks in the 2016 HPVC West’s Design and Innovation categories, and 13th overall.
    • 2016 CHICAGO QUANTITATIVE ALLIANCE INVESTMENT CHALLENGE: U OF A CQA TEAM - INVESTMENT STRATEGY

      Singh, Arvind; CARLSON, JONATHAN ANDERS (The University of Arizona., 2016)
      For my finance, honors thesis I participated in the 4th annual CQA Investment Challenge. The goal of the challenge is to successfully manage an equity long-short, market neutral portfolio (hedge fund). I worked on a team with three other guys from the Applied Portfolio Management class to invest and manage $20,000,000 of hypothetical money. Our investment horizon ran from October 30, 2015 – April 1, 2016. The stock universe we had access to was the Russell 1000, which mainly consists of the highest-ranking large cap stocks in the US equity market. Thirty-one teams from different universities were judged at the end of the competition on absolute return rank, adjusted return rank (the Sharpe ratio) and evaluation of the team video, which discussed investment strategy. The University of Arizona team achieved an absolute return of 6.47%, Sharpe ratio of 0.36 and abnormal return (alpha) of 20.05%. We finished with a ranking of 7th place out of 31 participating schools.
    • 2017 Chicago Quantitative Alliance Investment Challenge: University of Arizona CQA Investment Strategy

      Cederburg, Scott; To, Kham Hong; Hascalovici, Hilla; Bateman, Spencer; Recchion, Edward; Recchion, Charles (The University of Arizona., 2017)
      The CQA challenge is a 6 month competition that starts in October and ends in March. In this competition, student teams from 54 universities across the world are competing to build a long-short, market neutral equity portfolio that would generate the most risk-adjusted return in the given time horizon while operating under a few specific portfolio constraints. Each team is ranked against each other based on risk-adjusted return and sharpe ratio. Our team consisted of 5 senior finance students at the University of Arizona. Together, we developed our own unique market outlook and portfolio strategy in order to successfully invest $1,000,000 in (hypothetical) capital. We used industry tilts towards financials, energy, and consumer discretionary sectors and factor tilts towards momentum and value stocks as our main drivers of return while minimizing market exposure by keeping our beta between -0.25 and +0.25. The University of Arizona finished the competition in first place in overall portfolio ranking with a return of 12.23% and in fifth place for sharpe ratio at 1.43.
    • 2017 Chicago Quantitative Alliance Investment Challenge: University of Arizona CQA Team – Investment Strategy

      Cederburg, Scott; Bateman, Spencer Michael (The University of Arizona., 2017)
      In order to complete my honors thesis in finance, I joined a team of five finance students in participating in the 2017 Chicago Quantitative Alliance Investment Challenge. The challenge required teams to create $2,000,000 market-neutral investment portfolios utilizing both long and short equity positions. From November 8th until March 31st, our team actively managed our equity portfolio by selecting stocks from a 1,000 stock investment universe, while 53 other teams from universities around the world competed against our portfolio using measures of absolute return, risk-adjusted return, and a team video explaining our performance and investment strategy. By utilizing a strategy contingent on both industry bets and style exposures to value and momentum, the University of Arizona team has achieved an absolute return of 12.23% and a Sharpe Ratio of 1.43.
    • 2020 AIAA DESIGN, BUILD, FLY COMPETITION DESIGN REPORT

      Redford, Gary; Dahl, Kirk (The University of Arizona., 2020-05)
      The Design, Build, Fly University of Arizona 2020 design team developed a remote-controlled aircraft for the international 2020 American Institute of Aeronautics and Astronautics Design/Build/Fly competition on April 16-19 in Wichita, Kansas. The design emphasized speed, cargo carrying capacity, as well as deployment and detachment of a banner. The team constructed a 58-inch wingspan, low-wing, T-tail aircraft with twin engines. The design features an integrated passenger bay inside the fuselage with oversized control surfaces for improved maneuverability when carrying many passengers. A banner deployment and detachment mechanism allows for a banner to deploy mid-flight and detach from the aircraft before landing. The twin-engine configuration provides sufficient stability and properly orients the banner in flight. Large propellers provide both ample thrust for multiple mission types and turbulent flow over the wings for prolonged lift generation. Preliminary prototyping and flight testing verified the design as stable and flightworthy. Final testing evaluated and optimized propulsion, structures, and payload systems and enhanced mission scoring potential.
    • 30/30 Museum & Park: Engaging Artifacts

      Kothke, Michael; Kwolek, Queston Aureon (The University of Arizona., 2017)
      This project is located in the St. Henri neighborhood along the Lachine Canal in Montreal, Quebec. Industrial artifacts along the canal are culturally and historically significant to the people of Montreal. These artifacts are currently disconnected from public access – residents and tourists should be able to fully engage with them. The abandoned malting plant site has the potential to become an engaging destination that visitors want to explore. The proposal honors and reimagines the site’s industrial infrastructure and introduces valuable public amenities to the Lachine Canal. The 30/30 concept refers to the juxtaposition of the existing thirty silos and proposed thirty mounds. Generated from the volumetric capacity of the silos and natural form of grain, the mounds support vegetation to restore the sites pre-industrial presence of nature. Museum functions and public spaces are integrated into both the silos and mounds, resulting in an activity-driven experience for visitors that is centered on exploration and discovery. The proposal has the potential to host events, exhibitions, and outdoor activities year-round. By allowing guests to "trespass" through urban artifacts, they are invited to discover the mysterious atmosphere and cultural significance of the former factory and the site’s new public amenities.
    • 3D Printing of Mitral Valves for Pre-operative Medical Simulation

      Hamilton, Allan; Obafemi, Oluwatomisin Olurotimi (The University of Arizona., 2014)
    • 5-FU Chemotherapy Failure in Some Colorectal Cancer Patients with Microsatellite Instability

      Doetschman, Thomas; McEvoy, Megan; Coggins, Si'Ana Apri (The University of Arizona., 2015)
      Human colorectal cancer (CRC) is the third most commonly diagnosed cancer as well as the second leading cause of cancer mortality in the United States. The hypothesis to be tested in this study is that the loss of TGFβ signaling causes overexpression of the uridine phosphorylase (UP) gene in human CRC when treated with 5-fluorouracil (5-FU), a common chemotherapeutic reagent. As a result, 5-FU may be metabolized via the RNA pathway, causing an increase in host-toxicity. Conversely, a mutation in the KRAS gene may drive the reaction towards the antitumor, DNA metabolic pathway. This mechanism would explain the ineffective nature of 5-FU-based treatments on tumors, some of which are TFGβ signaling-deficient, that are usually characterized as microsatellite instability high (MSI-H). If so, situational inhibition of UP may increase the intended anti-tumor activity of the 5-FU treatment while decreasing host-toxicity in this subcategory of MSI-H tumors, thus allowing only patients whose tumors have a 5-FU-susceptible genetic profile to be treated successfully with 5-FU based therapy. Cancerous cell lines containing different combinations of TGFBR2 and KRASᴳ¹³ᴰ mutations will be cultured and photographed. The cell lines Hke3 and Hkh2 contain a TGFBR2 mutation and have a morphological pattern that closely resembles the colonic mucosa while the HCT116 cell line contains both TGFBR2 and KRASᴳ¹³ᴰ mutations and has less structured morphology. Following culturing, UP and TP mRNA expression levels in all cell lines will be determined through reverse transcriptase (RT)-PCR and normalized to β-actin. If the hypothesis is supported, and then verified in patients, personalized therapy can be used to determine whether 5-FU should be administered in colorectal cancer cases in which KRASᴳ¹³ᴰ and TGFBR2 mutations are present or absent.
    • A CACHING EVALUATION OF THE HADOOP DISTRIBUTED FILE SYSTEM

      Newberry, Eric Evan Michael (The University of Arizona., 2018)
      The Hadoop Distributed File System (HDFS) is a distributed le system used to support multiple widely-used big data frameworks, including Apache Hadoop and Apache Spark. Since these frameworks are often run across many compute nodes, it is possible that multiple nodes will read the same data. In addition, since data is replicated across multiple nodes for storage, the same data will be written multiple times across the network. In this paper, we conduct an evaluation of the caching potential present in HDFS in order to determine if in-network caching, particularly of the type seen in Named Data Networking (NDN), would reduce the amount of tra c seen in a Spark cluster network, as well as the average load on each data storage node. Our results show that for most benchmarks running on Apache Spark, a majority of the large read operations were done to transfer the Spark and application dependency libraries to each compute node. In addition, there was not a signi cant amount of read tra c in the network for most of the applications we evaluated, making the bene ts of in-network caching for HDFS questionable.
    • A Classical Insight Into the Separation Between Church and State

      Waddell, Philip T.; Videla, Gabrielle Marie (The University of Arizona., 2018)
      This paper connects events of the late Roman Republic with the United States of America’s principle of separation of Church and State. Many scholars find similarities between the Roman Republic and the U.S., but do not know the depth of connection or how the founding of the nation was impacted by the classical world. In the first sections of this paper I define the Roman state cult and examples of how it was abused during the turbulence of the late Republic. The next section describes the classical education the Founding Fathers received. There follows an indepth explanation of the creation and support of the principle of separating church and state during the founding of the United States. To conclude, connections are drawn between that principle of separation and the troubling events of the late Roman Republic that the Founding Fathers would have read from classical authors. It is hoped that this paper shows how a study of the classical world offers modern scholars a chance to understand the modern world.
    • A COMPARATIVE ANALYSIS OF RACIAL/ETHNIC SLEEP DISPARITIES AMONG COLLEGE STUDENTS IN MAJORITY-WHITE AND MAJORITY-MINORITY INSTITUTIONS

      Grandner, Michael; Okuagu, Ashley Chisom (The University of Arizona., 2018)
      Racial/ethnic sleep disparities have been documented for decades and may be related to discrimination faced at various levels, both in individual communities and at the sociopolitical stratosphere. The purpose of this research was to delve into a specific demographic of the national population, college/university students, and analyze whether the predominance of white students at various institutions affected the sleep quality and duration of minority students. Data used in this research was collected by the American College Health Association (ACHA) National College Health Assessment. In this survey, students identified as Non-Hispanic White, Black/African-American, Hispanic/Latino, Asian, Native American, Multiracial, or Other. Schools where the majority of respondents were Non-Hispanic White were classified as “Majority-White” schools while schools where a majority of the respondents were not Non-Hispanic White were classified as “Majority-Minority” schools. The results showed an overall correlation with poorer sleep in minority students at Majority-White schools and no association between school type and sleep sufficiency in Hispanics/Latinos. Sociopolitical and socioenvironmental influences may be involved, though future directions for this study may include further analysis on the reasoning behind the results of this study.
    • A COMPARISON BETWEEN AN ANCESTRAL AND A DERIVED CRUSTACEAN BRAIN

      Strausfeld, Nicholas; Riffer, Jordan (The University of Arizona., 2020-05)
      The goal of my research is to investigate which neurons in the brains of a crustacean species might be involved in pathways or circuits underlying sensory convergence and learning and memory. The first step in such an investigation is an analysis of neuron organization, using histological comparisons across identified centers that are known from other studies to serve multisensory integration and possibly learning and memory. The main goal of this research has been to analyze the morphology of a highly derived malacostracan crustacean (crab) brain, comparing it with the brain of a well-documented basal malacostracan belonging to Stomatopoda. The stomatopod learning and memory center consists of a cap and stalk, as in an insect’s mushroom body–a center known to support learning and memory. In contrast, the crab’s center comprises a saddle-like structure, which in the literature is known as a hemiellipsoid body, situated over the rostral surface of the lateral protocerebrum. In stomatopods, input and output neurons extend their branches into the mushroom body where they intersect parallel fibers. In the crab, there are no such obvious arrangements of fibers. My goal is to determine if there is evidence that, during the course of evolution, there has been a discrete modification of the organization in homologous computational circuits in the crab lineage (Brachycera). In order to complete this task, I have generated histological silver-stained preparations that allowed direct comparison of stomatopod and crab centers. I also had access to a library of Golgi stained specimens of both species investigated. These specimens provide crucial information about the shapes of single neurons.
    • A Comparison Of The Representation Of Women In The Northern Renaissance And Modern Day: The Occult, Female Sexuality, And The Media

      Barr, Sandra; Soehl, Morgan Marie (The University of Arizona., 2019)
      In this essay I will compare depictions of women in Northern Renaissance prints and the modern media in order to reveal the roots of stereotypical representations of women. Women who go against the status quo are represented as witches so as to prey on societal fears of female sexuality and dominance. Printmaking and the modern media both represent women with a binary understanding of femininity. How these stereotypes of women are represented in the media today have roots in Northern Renaissance prints that were heavily influenced by the Malleus Maleficarum, the first treatise on witches and the occult. This treatise utilized gendered stereotypes to describe witches, thus generating a fear of the occult that manifests as a fear of female power, particularly as it pertains to sexuality. Part one focuses on the Malleus Maleficarum as it was applied to various works of art during the 15th and 16th centuries. Part two will prove that the iconographic references utilized during the Northern Renaissance have continued on as unconscious bias within society, manifesting in the way women are represented in the media. Understanding these roots is an important step towards understanding why women have historically been relegated to a second-class status.