• A 1968 summer internship served at the Federal Youth Center, Englewood, Colorado

      Mulligan, R. A.; Hallock, Larry C. (The University of Arizona., 1971)
    • The 1979 Iranian revolution: the revolutionary revolution

      Brandis, Dov Asher (The University of Arizona., 2009-05)
    • 1990 Spousal rape occurrence

      Newlon, Betty J.; Watson, Patti Rae, 1958- (The University of Arizona., 1991)
      The purpose of this study was to (1) determine the number of Spousal Rapes reported to law enforcement agencies of the Tucson Metropolitan Area during 1990, (2) measure expert perceptions regarding the occurrence of Spousal Rape in the Tucson Metropolitan Area during 1990, (3) compare official reports and expert perceptions regarding the occurrence of Spousal Rape, and (4) determine what experts believe to cause under-reporting, if found. The population for this study consisted of 30 experts working with victims of spousal rape. These experts were from 4 categories: human service workers, therapists, attorneys, and researchers. Thirteen spousal rape reports were received by law enforcement agencies in the Tucson Metropolitan Area. Experts believed that spousal rape occurrence was 10-2500 times higher than the number reported. Most reasons for under-reported that were shared by experts pertained to low public awareness regarding the causes for spousal rape. Also presented are conclusions, recommendations, and implications.
    • 19th Annual Student Showcase Program (2011)

      Graduate & Professional Student Council (GPSC); University of Arizona (The University of Arizona, 2011-11)
    • 1D and 2D Photonic Crystal Nanocavities for Semiconductor Cavity QED

      Gibbs, Hyatt M; Richards, Benjamin Colby; Peyghambarian, Nasser; Norwood, Robert (The University of Arizona., 2011)
      The topic of this dissertation is photonic crystal nanocavities for semiconductor cavity quantum electrodynamics. For the purposes of this study, these nanocavities may be one dimensional (1D) or two dimensional (2D) in design. The 2D devices are active and contain embedded InAs quantum dots (QDs), whereas the 1D devices are passive and contain no active emitters. The 2D photonic crystal nanocavities are fabricated in a slab of GaAs with a single layer of InAs QDs embedded in the slab. When a cavity mode substantially overlaps the QD ensemble, the dots affect the linewidths of the observed modes, leading to broadening of the linewidth at low excitation powers due to absorption and narrowing of the linewidths at high excitation powers due to gain when the QD ensemble absorption is saturated. We observe lasing from a few QDs in such a nanocavity. A technique is discussed with allows us to tune the resonance wavelength of a nanocavity by condensation of an inert gas onto the sample, which is held at cryogenic temperatures. The structural quality at the interfaces of epitaxially grown semiconductor heterostructures is investigated, and a growth instability is discovered which leads to roughness on the bottom of the GaAs slabs. Adjustment of MBE growth parameters leads to the elimination of this roughness, and the result is higher nanocavity quality factors. A number of methods for optimizing the fabrication of nanocavities is presented, which lead to higher quality factors. It is shown that some fundamental limiting factor, not yet fully understood, is preventing high quality factors at wavelengths shorter than 950 nm. Silicon 1D devices without active emitters are investigated by means of a tapered microfiber loop, and high quality factors are observed. This measurement technique is compared to a cross-polarized resonant scattering method. The quality factors observed in the silicon nanocavities are higher than those observed in GaAs, consistent with our observation that quality factors are in general higher at longer wavelengths.

      Haussler, Mark R.; Hughes, Mark, 1950- (The University of Arizona., 1977)

      Haussler, Mark R.; Brumbaugh, Peter Flory, 1949- (The University of Arizona., 1975)
    • 2 μm Pulsed Fiber Laser Sources and Their Application in Terahertz Generation

      Peyghambarian, Nasser; Fang, Qiang; Fallahi, Mahmoud; Kieu, Khanh; Shi, Wei; Peyghambarian, Nasser (The University of Arizona., 2012)
      In this dissertation, an all-fiber-based single frequency nanosecond pulsed laser system at ~ 1918.4 nm in master-oscillator-power-amplifier (MOPA) configuration is present. The nanosecond pulse seed is achieved by directly modulating a continuous wave (CW) single frequency fiber laser using a fast electro-optical modulator (EOM) driven by an arbitrary waveform generator (AWG). One piece of single mode, large core, polarization-maintaining (PM) highly thulium-doped (Tm-doped) germanate glass fiber (LC-TGF) is used to boost the pulse power and pulse energy of these modulated pulses in the final power amplifier. This laser system can work in both high power and high energy regime: in high power regime, to the best of our knowledge, the highest average power 16 W and peak power 78.1 kW are achieved for single frequency transform-limited ~2.0 ns pulses at 500 kHz and 100 kHz repetition rate, respectively: In high energy regime, nearly 1 mJ and half mJ pulse energy is obtained for ~15 ns pulses at 1 kHz repetition rate and 5 kHz repetition rate, respectively. Theoretical modeling of the large-core highly Tm-doped germanate glass double-cladding fiber amplifier (LC-TG-DC-FA) is also present for 2&mum nanosecond pulse amplification. A good agreement between the theoretical and experimental results is achieved. The model can simulate the evolution of pump power, signal energy, pulse shape and the amplified stimulated emission (ASE) in the amplifier. It can also be utilized to investigate the dependence of the stored energy in the LC-TGF on the pump power, seed energy and repetition rate, which can be used to design and optimize the LC-TG-DC-FA to achieve higher pulse energy and average power. Two channel of high energy nanosecond pulses (at 1918.4 nm and 1938 nm) are utilized to generate THz wave in a quasi-phase-matched (QPM) gallium arsenide (GaAs) based on difference frequency generation. THz wave with ~ 5.4μW average power and ~18 mW peak power has been achieved. Besides, one model is built to simulate a singly resonated THz parametric oscillator. The threshold, the dependence of output THz energy on pump energy has been investigated through this model. One pump enhanced THz parametric oscillator has been proposed. The enhancement factor of the nanosecond pulses in a bow-tie ring cavity has been calculated for different pulse duration, cavity length and the transmission of the coupler. And the laser resonances in the ring cavity have been observed by using a piezo to periodically adjust the cavity length. We also build an all-fiber thulium-doped wavelength tunable mode-locked laser operating near 2&mum. Reliable self-starting mode locking over a large tuning range (>50 nm) using fiber taper based carbon nanotube (FTCNT) saturable absorber (SA) is observed. Spectral tuning is achieved by stretching another fiber taper. To the best of our knowledge, this is the first demonstration of an all-fiber wavelength tunable mode-locked laser near 2&mum.

      Hsu, Ivann Hong; Emerson, Joanna; Wong, Andrew; Zinsli, Phillip (The University of Arizona., 2009-05)

      Zinsli, Phillip Alexander (The University of Arizona., 2009-05)

      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.

      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 Arizona Statewide Emergency Medical Services Needs Assessment (ASENA)

      Derksen, Daniel; George, Taylor A.; Derksen, Daniel; Butler, Matthew; Barraza, Leila (The University of Arizona., 2017)
      Emergency Medical Services (EMS) is an institution and product of public health, health care, and public safety that is chopped and scattered across multiple jurisdictional deployment methodologies throughout Arizona. To fully-asses the EMS needs of the state, those jurisdictions are considered as a whole; for it is the whole that makes a system, and a system is what truly impacts patient outcomes. Evaluating the ""whole"" is the genesis and driver of the 2016 Arizona Statewide EMS Needs Assessment (ASENA). The primary objective of ASENA is to establish a current ""snap-shot"" of EMS in the state while simultaneously identifying needs and/or areas that can be targeted for further analysis and/or improvement as part of Population Health Management and Emergency Medical Services Integration under the AZ Flex Grant funded by the U.S. Health Resources and Services Administration (HRSA). In addition, the secondary objective of ASENA is to compare and contrast this current ""snap-shot"" with data obtained in a more narrow needs assessment conducted in 2001, allowing comparison of changes in Arizona's critical access EMS system over 15 years. To accomplish this, a 105-question needs assessment survey tool was developed and distributed to EMS agencies throughout the state. The fully-vetted survey tool collected information pertaining to sixteen core functional sections. Eighty-six agencies fully-completed the needs assessment survey tool, with respondents evenly distributed across the state's four EMS coordinating regions and representative of the various service-delivery methodologies. The combined service areas of the respondents cover over 85% of the state's population. Arizona's statewide EMS system is well organized and positioned to deliver advanced levels of prehospital care for the vast majority of its citizens and visitors, with some variation between urban and rural regions. Key needs identified relate to: patient care reporting between EMS providers, emergency departments and receiving hospitals; quality assurance activities; education and skills training programs; dispatch system capabilities; mass casualty and public health preparedness; equipment and supplies; and more robust use of data and analyses to inform continuous EMS system improvement.

      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.
    • 2017 Portfolio of Compositions

      Asia, Daniel; Rice, Willie Aaron; Paiewonsky, Moises; Decker, Pamela (The University of Arizona., 2017)
      The following collection represents the sum of works created by composer W. Aaron Rice during his Master's studies at The University of Arizona. This document provides programmatic introductions to each piece performed at the composer's Master's Recital, and the program from said recital is included at the end for archiving. The many separate pieces are introduced with details on compositional intent and brief analyses. In the pages following the introductions, full scores of each piece are included for detailed analysis.

      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.