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DTSTART;TZID=America/Los_Angeles:20191119T121500
DTEND;TZID=America/Los_Angeles:20191119T131000
DTSTAMP:20260419T094237
CREATED:20190910T235147Z
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SUMMARY:Recent developments biquandle brackets (Sam Nelson\, CMC)
DESCRIPTION:We review some recent developments in the study of biquandle brackets and other quantum enhancements.
URL:https://colleges.claremont.edu/ccms/event/antc-talk-sam-nelson-cmc-2/
LOCATION:Emmy Noether Room\, Millikan 1021\, Pomona College\, 610 N. College Ave.\, Claremont\, California\, 91711
CATEGORIES:Algebra / Number Theory / Combinatorics Seminar
GEO:34.099908;-117.7142522
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Emmy Noether Room Millikan 1021 Pomona College 610 N. College Ave. Claremont California 91711;X-APPLE-RADIUS=500;X-TITLE=610 N. College Ave.:geo:-117.7142522,34.099908
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191119T150000
DTEND;TZID=America/Los_Angeles:20191119T160000
DTSTAMP:20260419T094237
CREATED:20191113T201432Z
LAST-MODIFIED:20191113T201432Z
UID:1644-1574175600-1574179200@colleges.claremont.edu
SUMMARY:Topological index and square plat projections (Puttipong Pongtanapaisan)
DESCRIPTION:The bridge distance and the topological index are measures of the complexity of the bridge splitting of a knot. In 2016\, Johnson and Moriah gave a formula for the bridge distance of the canonical bridge sphere of a knot in a highly twisted plat projection in terms of the height and the width of the plat. Essentially\, if the plat is high\, then the bridge distance is high and the topological index equals one. Not much is known about the topological index of the bridge sphere when the plat is not high. In this talk\, I will show that if the plat is square\, then the topological index equals two. This is joint work with Daniel Rodman.
URL:https://colleges.claremont.edu/ccms/event/topological-index-and-square-plat-projections-puttipong-pongtanapaisan/
LOCATION:Millikan 2099\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
ORGANIZER;CN="Sam Nelson":MAILTO:snelson@cmc.edu
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191120T161500
DTEND;TZID=America/Los_Angeles:20191120T171500
DTSTAMP:20260419T094237
CREATED:20190827T000355Z
LAST-MODIFIED:20191113T071537Z
UID:1406-1574266500-1574270100@colleges.claremont.edu
SUMMARY:Silica-based glasses: Realizing process-structure-property connections through computational modeling
DESCRIPTION:Silica-based glasses are increasingly becoming vital components in our current technology\, from optical data transmission lines\, to electronics\, to optical lenses\, to smartphone screens. These materials are inherently brittle and subject to failure under shock\, non-equilibrium stress states\, or corrosive environments.  Identifying new compositions and processing conditions that result in improved fracture resistance (i.e. a higher fracture toughness) is achievable through materials design approaches. However\, discovery primarily remains an empirically determined procedure.  Atomistic molecular dynamics can be a powerful tool in this application\, providing a capability to probe how glass breaks and what compositions or microstructural features result in better material performance.  In this talk\, a novel numerical method to determine the fracture toughness from atomistic material representations will be demonstrated on vitreous silica-based glass compositions. Process-structure-property connections will then be explored using this measure to highlight the relationships between processing conditions\, chemical composition\, microstructural content\, and material performance.  Finally\, an overview of the collaboration between the 2019-20 CGU Math Clinic team and Sandia National Laboratories will be discussed\, where project goals are focused on using machine learning to predict fracture nucleation in silica glass.  \nSandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia\, LLC.\, a wholly owned subsidiary of Honeywell International\, Inc.\, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.
URL:https://colleges.claremont.edu/ccms/event/tba-13/
LOCATION:Argue Auditorium\, Pomona College\, 610 N. College Ave.\, Claremont\, CA\, 91711\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Blerta Shtylla":MAILTO:shtyllab@pomona.edu
GEO:34.0999157;-117.7142668
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20191121T120000
DTEND;TZID=America/Los_Angeles:20191121T130000
DTSTAMP:20260419T094237
CREATED:20191119T200348Z
LAST-MODIFIED:20191119T200348Z
UID:1668-1574337600-1574341200@colleges.claremont.edu
SUMMARY:Dynamics of a childhood disease model with isolation
DESCRIPTION:Joan Ponce \nPurdue University \nAbstract: One of the main challenges of mathematical modeling is the balance between simplifying assumptions and incorporating sufficient complexity for the model to provide more accurate and reliable outcomes. For mathematical simplicity\, many commonly used epidemiological models make restrictive modeling assumptions. Although models under such assumptions are capable of producing useful insights into the biological questions in many cases\, they may generate discrepancies in model outcomes. One of the common assumptions in infectious disease models is that the duration for disease stages is exponentially distributed. This may result in discrepancies in model outcomes between such a model and models with more realistic stage distribution assumptions such as gamma distributions with the shape parameter greater than one (Feng et al.\, 2007). In this talk\, I will present an ODE model with gamma-distributed infectious and isolated periods and compare it with a model with exponentially distributed stages. These models intend to show that\, for childhood diseases\, isolation of infected children may be a possible mechanism responsible for the observed oscillatory behavior in incidence. This is shown analytically by identifying a Hopf bifurcation with the isolation period as the bifurcation parameter. \nAn important result is that the threshold value for isolation to generate sustained oscillations from the model with gamma-distributed isolation period is much more realistic than the model assuming exponential distributions. \nAbout the speaker:  Joan Ponce is a graduate student from Purdue University
URL:https://colleges.claremont.edu/ccms/event/dynamics-of-a-childhood-disease-model-with-isolation/
LOCATION:Millikan 2141\, Pomona College
CATEGORIES:Applied Math Seminar
ORGANIZER;CN="Kathy Sheldon":MAILTO:ksheldon@pomona.edu
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