Department Events

Events

  • Nov
    10

    Special Seminar: Dr. Ali Rana Atilgan

    McCormick - Civil and Environmental Engineering

    11:00 AM A230, Technological Institute

    EVENT DETAILS

    Maze Generators and Collective Action in Networks

    There is an intimate connection between the domain coarsening of spins in the zero-temperature Ising models and the collective behavior of opinion formation of agents in social platforms. The outcomes of these models manifest themselves in spatial patterns whose complexity in dimensions higher than one is still intriguing. Admittedly these spatial organizations are linked to Turing patterns many of which may be replicated by cellular automata (CA). In this talk, the following results will be presented: (i) When the agents demand that at least half of their neighbors be of opposite opinion, as opposed to at most half (Glauber dynamics), depending on how large the size of Moore neighboring “shells” in square lattices (the first shell includes eight agents; the second 24 neighboring contacts, and so on), the spatial patterns exhibit from maze (labyrinth) to perfect stripe patterns for periodic boundary conditions. These patterns have not been indicated in the most recent phase diagrams. Our CA simulations have verified that similar maze patterns are observed when the agents choose to place more opposite views in their second coordinating neighbors. (ii) Stubborn agents never change their opinion, while “potential nodes” may switch their decision. The information dissemination (percolation) threshold of the number of stubborn agents increases as the number of random links increases in the small-world society. However, to form a collective cluster set of the same size with a higher number of stubborn agents, more ordered motifs must be gathered.

    Dr Ali Rana Atilgan, native of Istanbul, obtained his PhD degree in the School of Aerospace Engineering at Georgia Institute of Technology. His early works focused on explanation of intriguing patterns experimentally observed for structural members made out of composite materials. His later contributions have been in the area of biomolecular systems. The elastic network models have found a wide area of applications in the biological community. Since 2006, he has been a full-time faculty member at Sabanci University, and an adjunct professor in the School of Civil Engineering at Bogazici University, both in Istanbul.

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    TIME Friday, November 10, 2017 at 11:00 AM - 12:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Tierney Acott    tierney-acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Jul
    20

    Application for a Degree due to The Graduate School to receive a degree in Summer

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    TIME Friday, July 20, 2018

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

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  • Jul
    25

    Special Seminar: Dr. Isabelle Michaud-Soret

    McCormick - Civil and Environmental Engineering

    4:00 PM A230, Technological Institute

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    TIME Wednesday, July 25, 2018 at 4:00 PM - 5:00 PM

    LOCATION A230, Technological Institute    map it

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    CONTACT Tierney Acott    tierney-acott@northwestern.edu EMAIL

    CALENDAR McCormick - Civil and Environmental Engineering

  • Aug
    4

    Six-week session ends

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    TIME Saturday, August 4, 2018

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

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  • Aug
    10

    Dissertation, PhD Final Exam and change of grade forms due to TGS for Summer PhD candidates

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    TIME Friday, August 10, 2018

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    CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

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  • Aug
    17

    Master's Completion form due for TGS Summer master's candidates

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    TIME Friday, August 17, 2018

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  • Aug
    18

    Eight-week session ends

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    TIME Saturday, August 18, 2018

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