The
Professional Presentations of Aaron O. Morris
In
Reverse Chronological Order
For Class Presentations, click here.
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Each entry follows the following format, as applicable:
Presentation Title
Author(s)
Forum of presentation (e.g. conference name, conference session,
conference location)
Date of presentation
Abstract (as presented)
Published information
Please note that these presentations are in .html or image format. To request a .ppt/.pptx version, please email me.
Table of Presentations:
| Conference: | |
| Location: | |
| Session: | |
| Session Location: | |
| Session Time: | |
| Title (as presented): | |
| Title (as published): | |
| Authors & Affiliations: | |
| Abstract (as presented): | |
| Abstract (as published): | |
| Other info: |
| Conference: | [North American] Particle Accelerator Conference 2011 (PAC’11) |
| Location: | New York City, NY |
| Session: | Student Poster Session (056)
Thursday Posters (THP090) |
| Session Location: | Marquis Ballroom (9th floor), New York
Marriott Marquis Hotel
Westside Ballroom (5th floor), New York Marriott Marquis Hotel |
| Session Time: | Sunday, March 27, 2011, 6:00 PM - 8:00 PM
Thursday, March 31, 2011, All Day |
| Title (as presented): | Physics Validation of Monte Carlo Simulations for Detector Backgrounds at a Muon Collider |
| Title (as published): | Monte Carlo Simulations of Detector Backgrounds at a Muon Collider |
| Authors & Affiliations: | A.O. Morris, D. Hedin - Northern Illinois University,
DeKalb, Illinois, IL M.A.C. Cummings, S.A. Kahn, T.J. Roberts - Muons, Inc, Batavia, IL J.F. Kozminski - Lewis University, Romeoville, IL |
| Abstract (as presented): | Muon colliders are considered to be an important future energy frontier accelerator. A muon collider could be built as a circular accelerator into the TeV energy range as a result of the reduced synchrotron radiation expected from the larger rest mass of muons. For a muon collider with 750 GeV µ+ and µ- with 1012 µ per bunch, it can be expected that there would be 4.3×105 muon decays per meter per beam. These decays will produce very energetic off-momentum electrons that can produce detector backgrounds that can affect the physics. The main backgrounds include electrons from muon decays, synchrotron radiation from the decay electrons, hadrons produced by photonuclear interactions, coherent and incoherent beam-beam pair-production, and Bethe-Heitler muon production. In this paper we will discuss the simulation results in terms of observed physics processes in G4Beamline. |
| Abstract (as published): | |
| Other info: | Poster was presented twice at this conference. |
| Conference: | Workshop on Detector R&D |
| Location: | Fermilab, Batavia, IL |
| Session: | Posters and Pizza |
| Session Location: | Wilson Hall Atrium |
| Session Time: | Friday, October 8, 2010, 5:00 PM - 7:00 PM |
| Title (as presented): | Monte Carlo Simulations of Detector Backgrounds at a Muon Collider |
| Title (as published): | Monte Carlo Simulations of Detector Backgrounds at a Muon Collider |
| Authors & Affiliations: | Aaron O. Morris - Northern Illinois University, DeKalb,
IL Steve A. Kahn - Muons, Inc., Batavia, IL Mary Anne Cummings - Muons, Inc., Batavia, IL / Northern Illinois University, DeKalb, IL Dave Hedin - Northern Illinois University, DeKalb, IL Joe Kozminski - Lewis University, Romeoville, IL Tom J. Roberts - Muons, Inc., Batavia, IL |
| Abstract (as presented): | Muon colliders are considered to be an important future energy frontier accelerator. A muon collider could be built as a circular accelerator into the TeV energy range as a result of the reduced synchrotron radiation expected from the larger rest mass of muons. For a muon collider with 750 GeV/c2 µ+ and µ- with 1012 µ per bunch, it can be expected that there would be 4.3×105 muon decays per meter. These decays will produce very energetic off-momentum electrons that can produce detector backgrounds that can affect the physics. The main backgrounds include electrons from muon decays, synchrotron radiation from the decay electrons, hadrons produced by photo-nuclear interactions, coherent and incoherent beam-beam pair-production, and Bethe-Heitler muon production. |
| Conference: | 2008 Annual Meeting of the Association of American Geographers |
| Location: | Boston, Massachusetts |
| Session: | Session 3122: Poster Session: Agricultural Geography, Recreation and Tourism, Energy and Economic |
| Session Location: | Grand Ballroom Salon G, Marriott, 4th Floor |
| Session Time: | Thursday, April 17, 2008, 8:00 AM - 9:40 AM |
| Title (as presented): | Analysis of Cruise Passenger Origins in the North American Market |
| Title (as published): | Analysis of Cruise Passenger Origins in the North American Market |
| Authors & Affiliations: | Aaron O. Morris - Department of Geography, University of Cincinnati |
| Abstract (as presented): | Cruise tourism is “one of the fastest-growing segments of the tourist industry” (de Blij & Murphy 1999:320) with “an average annual passenger growth rate of 8.2%” (CLIA 2006) since 1980. This rapid growth of the cruise industry is physically evidenced by increases in both the number of active cruise ships and the number of berths per ship. Though demand for cruise vacations continues to grow, only scant attention has been paid to the origins of the passengers themselves. This research shows that state population is the main determinant for the number of cruise passengers from that state. Additional economic, demographic, and geographical comparisons are also provided. Data are provided by the Cruise Lines International Association (CLIA), the United Nations World Tourism Organization (UNWTO), and the United States Census Bureau. |
| Abstract (as published): | Cruise tourism is "one of the fastest-growing segments of the tourist industry" (de Blij & Murphy 1999:320) with "an average annual passenger growth rate of 8.2%" (CLIA 2006) since 1980. This rapid growth of the cruise industry is physically evidenced by increases in both the number of active cruise ships and the number of berths per ship. Though demand for cruise vacations continues to grow, only scant attention has been paid to the origins of the passengers themselves. Two preliminary findings with regards to passenger origins have challenged anecdotally-accepted understandings of cruise passenger origins: 1) there does not appear to be a "snowbird" effect within the cruise industry; and 2) the presence of cruise ports in a state is of only marginal importance. (Morris, in preparation) Data are provided by the Cruise Line International Association (CLIA). |
| Other info: | Keywords: tourism-cruise, Caribbean, North America Topics: Tourism, Coastal and Marine, Regional Geography |
| Conference: |
Annual Meeting of the Association of American Geographers |
| Location: |
San Francisco, California |
| Session: | Poster Session: Population/Hazards |
| Session Location: | Friday, 4/20/07 at 10:00 AM |
| Session Time: | 2007 |
| Title (as presented): | Title Forthcoming |
| Title (as published): |
Where you want to go to get away from it all: Theoretical Models of Cruise Tourist Behavior |
| Authors & Affiliations: | Aaron O. Morris - Department of Geography, University of Cincinnati |
| Abstract (as presented): | The cruise tourism industry is “one of the fastest-growing segments of the tourist industry” (de Blij & Murphy 1999:320) with “an average annual passenger growth rate of 8.2% per annum” (CLIA 2006) since 1980. Notably, this is more than double the United Nations World Tourism Organization’s (UNWTO) findings of a an “average annual growth rate of more than 4%” (Yarnal & Kerstetter 2005:368) for the overall tourism industry. While the growth of the cruise industry is physically evidenced by increases in the number of active cruise ships and the number of berths per ship, it has not been adequately explained by geographic, demographic, or cultural means. As such, we examine data from the Cruise Line International Association (CLIA) for 2005 in order to determine if the centers of U.S. state populations are a determinant in the distribution of cruise ship passengers via Spearman’s Rank Correlation Coefficient (Rs). This research will act as a proof-of-concept study for further demographic and geographic analyses of the cruise tourism industry. |
| Abstract (as published): |
We examine several theoretical models of tourist behavior in order to explain the increasing popularity of the cruise vacation. According to the United Nations World Tourism Organization (UNWTO) tourism has an "average annual growth rate of more than 4%." (Yarnal & Kerstetter 2005:368) Projections indicate that by 2020 there will be over 1.6 billion international tourists. As the numbers of tourists continue increasing, the numerous tourism sub-industries will grow as well. Researchers classify cruise tourism as "one of the fastest-growing segments of the tourist industry" (de Blij & Murphy 1999:320) with studies showing that the average annual growth rate has been "in excess of 8% since 1980." (Yarnal & Kerstetter 2005:368) This increased popularity is physically evidenced by increases in the number of active cruise ships and the number of berths per ship. However, the increase in popularity of the cruise industry has not been adequately explained. Thus far, the main foci of study have been on "economic analyses and environmental impact studies." (Yarnal & Kerstetter 2005:368) Other perspectives, such as anthropological, geographical, psychological, and sociological have yet to be fully explored. This paper uses theoretical models of tourist behavior in order to explain the rapid increase in cruise popularity. In addition, these models will also be applied to cruise passengers in order to explain trends in cruise destinations and shore excursion activities. Based on preliminary analyses, we expect to find a positive correlation with the increasing popularity of adventure and sports tourism. |
| Other info: |
Keywords: Tourism-Cruise, Behavior, Caribbean |
| Conference: | Charles Proteus Steinmetz Symposium |
| Location: | Union College, Schenectady, New York |
| Session: | Session V: Anthropological Research Around the Globe II |
| Session Location: | |
| Session Time: | May 5, 2006 |
| Title (as presented): |
Cruise Ship Tourism in the Caribbean: Sustainable Tourism for Small Island States or the Worst Example of Mass Tourism? |
| Title (as published): |
Cruise Ship Tourism in the Caribbean: Sustainable Tourism for Small Island States or the Worst Example of Mass Tourism? |
| Authors & Affiliations: | Aaron Morris '06 (Vernon Hills,
Illinois) |
| Abstract (as presented): | |
| Abstract (as published): |
We examine “sustainability” with reference to the Caribbean cruise industry. Typically, the cruise industry is classified as “mass tourism” and has been hailed as “one of the fastest-growing segments of the tourist industry.” (de Blij 1999:320) However, the cruise industry has also been demonized as “most anathema to the concepts and practices of ecotourism and most difficult to green through environmental and socioeconomic reforms.” (Honey 2002:41) Through field research onboard Royal Caribbean International’s Enchantment of the Seas, ex post facto analysis of previous cruise tourism experiences, and literature reviews, we examine the effects of what is considered “sustainable (and thus low impact) tourism” for small-island states vis-à-vis the Caribbean cruise industry. We focus on whether small-scale land-based ecotourism ventures are more sustainable than the Caribbean cruise industry by reexamining the functional definition of “low impact” as it pertains to tourism. We propose that cruise ships offer longer-term sustainability for small island states in the Caribbean than do traditional sustainable and ecotourism ventures. We acknowledge that the cruise industry is not the economic ideal for host countries in the Caribbean, but is more “profitable” than the so-called “low impact” forms of tourism vis-à-vis environmental, social, and cultural costs and impacts. |
| Other info: |
| Conference: |
Charles Proteus Steinmetz Symposium |
| Location: | Union College, Schenectady, New York |
| Session: | Session IV: From Atoms to Viruses to Stars |
| Session Location: | |
| Session Time: | May 5, 2006 |
| Title (as presented): | Super High Resolution Analysis of a Compact Radio Galaxy |
| Title (as published): |
Super High Resolution Analysis of a Compact Radio Galaxy |
| Authors & Affiliations: | Aaron Morris '06 (Vernon Hills, Illinois) Majors: Astronomy & Human Geography Minor: Physics |
| Abstract (as published): |
Radio astronomers have discovered a population of galaxies with radio emission structures morphologically similar to canonical double-lobed radio galaxies but on the order of only 100 light-years across. These objects, known as Compact Symmetric Objects (CSOs), are believed to be the precursors of the aforementioned canonical double-lobed radio galaxies, and have been extensively observed in order to study the early stages of radio galaxy evolution. However, the spectra of CSOs are significantly different from those of canonical radio galaxies. Currently, there are two competing models to explain this dichotomy. In July 2004, we obtained super high resolution radio observations of a recently classified CSO 0026+346 (Taylor, Marr, Converse, & Morris, in preparation) at a range of frequencies. We have analyzed these data in order to determine the physical conditions, such as magnetic field strengths and energetic particle densities, within the CSO. We present various maps of this source and the resultant analyses in order to report on the fits of the two competing models to the data. We gratefully acknowledge the NRAO staff for their assistance. This research was supported by an award from the Research Corporation. |
| Other info: |
| Conference: | National Conference on Undergraduate Research |
| Location: | The University of North Carolina – Asheville, Asheville, North Carolina |
| Session: | Poster Session 6, Presentation Kiosk 23 B |
| Session Location: | |
| Session Time: | April 8, 2006 |
| Title (as presented): |
Is sustainability incompatible with the cruise ship industry? |
| Title (as published): | CRUISE SHIP TOURISM IN THE CARIBBEAN: SUSTAINABLE TOURISM FOR SMALL ISLAND STATES OR THE WORST EXAMPLE OF MASS TOURISM? |
| Authors & Affiliations: |
Aaron Morris (Union College) |
| Abstract (as presented): | |
| Abstract (as published): | We will examine the concept of sustainability with reference to the Caribbean cruise industry. Typically, the cruise industry is classified as “mass tourism” and has been hailed as “one of the fastest-growing segments of the tourist industry.” (de Blij 1999:320) However, the cruise industry has also been demonized as “most anathema to the concepts and practices of ecotourism and most difficult to green through environmental and socioeconomic reforms.” (Honey 2002:41) This research was conducted through field work, interviews, and observations on Royal Caribbean International’s Enchantment of the Seas; analysis of previous cruise tourism experiences; and literature reviews. In the course of this study, we examine the effects of what is considered “sustainable tourism” (which is generally considered to be “low impact”) for small-island states vis-à-vis the Caribbean cruise industry. We focus on whether small-scale land-based ecotourism ventures are more sustainable than the Caribbean cruise industry by reexamining the functional definition of “low impact” as it pertains to tourism. We propose that cruise ships offer longer-term sustainability for small island states in the Caribbean than do traditional sustainable and ecotourism ventures. We acknowledge that the cruise industry is not the most profitable form of tourism for host countries in the Caribbean, as cruise lines and their parent corporations retain a majority of the profits, but it is more profitable than the so-called low impact forms of tourism once the true costs of environmental, social, and cultural impacts are taken into consideration. |
| Other info: |
| Conference: | National Conference on Undergraduate Research |
| Location: | The University of North Carolina – Asheville, Asheville, North Carolina |
| Session: |
Poster Session 2, Presentation Kiosk 20 B |
| Session Location: | |
| Session Time: | April 6, 2006 |
| Title (as presented): | Multi–Frequency VLBI Study of the CSO 0026+346 |
| Title (as published): | Multi–Frequency VLBI Study of the CSO 0026+346 |
| Authors & Affiliations: |
Aaron Morris (Union College) |
| Abstract (as published): |
Within the last twenty years, radio astronomers have discovered a population of galaxies with radio emission structures on the order of 1000 years of age. These sources have morphologies characterized by symmetric lobe emission about an active core, similar to canonical double-lobed radio galaxies but orders of magnitude smaller in scale. These sources, which are less than 100 light-years across, are known as Compact Symmetric Objects (CSOs). They are believed to be the precursors to the aforementioned canonical double-lobed radio galaxies, and have been extensively observed in order to study the early stages of radio galaxy evolution. The spectrum of the emission from these sources, which is due to synchrotron radiation, turns over at high radio frequencies, which implies absorption at the lower radio frequencies. The models for the cause of this absorption involve either synchrotron self-absorption resulting from very large magnetic fields within the source or free-free absorption due to line-of-sight ionized gas within the host galaxy. In a prior study (Marr, Taylor, & Crawford 2001) using observations with Very Long Baseline Interferometry (VLBI), it was shown that the absorption of the emission of the canonical CSO 0108+388 is due to free-free absorption. The authors proposed that the absorbing medium is a disk surrounding the radio emission. We have obtained VLBI observations of the recently classified CSO 0026+346 (Taylor, Marr, Converse, & Morris, in preparation) in July 2004 at a range of frequencies. We analyzed these data in order to determine physical conditions, such as magnetic field strengths and energetic particle densities, within the CSO. We present flux-density maps, spectral-index maps, and spectra at all positions in the source's structure. We report on the fits of free-free absorption and synchrotron self-absorption models to the spectra. We gratefully acknowledge the NRAO staff and Greg Taylor for their assistance. This research was supported by an award from the Research Corporation. |
| Other info: |
| Conference: | Union College Department of Physics & Astronomy |
| Location: | Union College, Schenectady, New York |
| Session: | |
| Session Location: | |
| Session Time: |
March 30, 2006 |
| Title (as presented): | An ultra-high resolution study of the recently classified CSO 0026+346 |
| Authors & Affiliations: | |
| Other info: |
| Conference: | Annual Meeting of the Association of American Geographers |
| Location: | Chicago, Illinois |
| Session: | |
| Session Location: | |
| Session Time: | March 8, 2006 |
| Title (as presented): | Is sustainability incompatible with the cruise ship industry? |
| Title (as published): | |
| Authors & Affiliations: | |
| Abstract (as presented): | |
| Abstract (as published): | |
| Other info: |
| Conference: | 207th Meeting of the American Astronomical Association |
| Location: | Washington, D.C. |
| Session: | |
| Session Location: | |
| Session Time: | January 12, 2006 |
| Title (as presented): | Multi–frequency VLBI Study of the CSO 0026+346 |
| Title (as published): | Multi–frequency VLBI Study of the CSOs 0026+346 and 1321+410 |
| Authors & Affiliations: | |
| Abstract (as presented): | |
| Abstract (as published): | |
| Other info: |
| Conference: | Union College Chemistry Club |
| Location: | Union College, Schenectady, New York |
| Session: | |
| Session Location: | |
| Session Time: | September 22, 2005 |
| Title (as presented): | Fiji – Spring Term Abroad 2005 |
| Title (as published): | |
| Authors & Affiliations: | Aaron Morris - Union College, Schenectady, NY |
| Other info: |
| Location: | Suva, Republic of the Fiji Islands |
| Session Location: | Branster Memorial Chruch, Cunningham Stage 4 |
| Session Time: | Saturday, April 20, 2005 |
| Title (as presented): | A Brief Tour of the “Visible” Universe |
| Authors & Affiliations: | Aaron Morris - Department of Anthropology, Union College, Schenectady, NY |
| Other info: | Prepared quickly, without internet access, for a Seventh Day Adventist Sunday school. |
| Conference: | Astronomical Society of New York Fall Meeting |
| Location: | Rensselaer Polytechnic Institute, Troy, New York |
| Session: | Poster Session |
| Session Location: | |
| Session Time: | October 23, 2004 |
| Title (as presented): | Multi–frequency VLBA Observations of 19 Candidate Compact Symmetric Objects |
| Title (as published): | |
| Authors & Affiliations: | A. O. Morris - Union College, Schenectady, NY J. M. Marr - Department of Physics & Astronomy, Union College, Schenectady, NY G. B. Taylor - NRAO, Socorro, NM J. Converse - University of California, Berkley N. Emerson - SUNY Stony Brook |
| Abstract (as presented): |
Abstract forthcoming. |
| Abstract (as published): | |
| Other info: |
| Conference: | Seventh International Conference of the Mars Society |
| Location: | Palmer House Hilton Hotel, Chicago, Illinois |
| Session: | |
| Session Location: | |
| Session Time: | August 22, 2004 |
| Title (as presented): | Better Homes and Gardens on Mars: Terraforming the Red Planet as Science [Fiction] |
| Title (as published): | This was a late addition to the schedule and as such is not listed amongst the abstracts. |
| Authors & Affiliations: | Aaron Morris - Union College, Schenectady, NY Steve Sargent - Department of History, Union College, Schenectady, NY |
| Abstract (as published): | This was a late addition to the schedule and as such is not listed amongst the abstracts. |
| Other info: |
The presentation was lost in a laptop hard
drive crash. |
| Conference: | Union College Summer Science Seminar Series Lecture |
| Location: | Union College, Schenectady, New York |
| Session: | |
| Session Location: | |
| Session Time: | July 20, 2004 |
| Title (as presented): | Infants of the Universe: Identifying Young Radio Galaxies |
| Authors & Affiliations: | Aaron Morris - Union College, Schenectady, NY Jonathan Marr - Department of Physics, Union College, Schenectady, NY |
| Conference: | Charles Proteus Steinmetz Symposium |
| Location: | Union College, Schenectady, New York |
| Session: | |
| Session Location: | |
| Session Time: | May 7, 2004 |
| Title (as presented): | Better Homes and Gardens on Mars: Terraforming the Red Planet as Science [Fiction] |
| Title (as published): | Better Homes and Gardens on Mars: Terraforming the Red Planet as Science [Fiction] |
| Authors & Affiliations: | |
| Abstract (as published): | Abstract forthcoming. |
| Other info: |
| Conference: | Astronomical Society of New York / Rochester Symposium for Physics Students Joint Meeting |
| Location: | University of Rochester, Rochester, New York |
| Session: | |
| Session Location: | |
| Session Time: | April 17, 2004 |
| Title (as presented): | Better Homes and Gardens on Mars: Terraforming the Red Planet as Science [Fiction] |
| Title (as published): | Better Homes and Gardens on Mars: Terraforming the Red Planet as Science [Fiction] |
| Authors & Affiliations: | Aaron Morris - Union College, Schenectady, NY Steve Sargent - Department of History, Union College, Schenectady, NY |
| Abstract (as published): |
Abstract forthcoming. |
| Other info: |
| Conference: | Union College Summer Science Seminar Series Lecture |
| Location: | Union College, Schenectady, New York |
| Session: | |
| Session Location: | |
| Session Time: | July 15, 2003 |
| Title: | Super Resolution Studies of Gigahertz Peaked Spectrum Sources |
| Authors & Affiliations: | Aaron Morris - Union College, Schenectady, NY Jonathan Marr - Department of Physics, Union College, Schenectady, NY |
