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Upcoming Events

  • Eric Weiden, MA Thesis Defence, Faculty of Education
    9:30 AM - 1:00 PM
    November 26, 2014
    No Description
  • Amr Marzouk - Ph.D. Thesis Defense - Mechatronics
    10:00 AM - 1:00 PM
    November 26, 2014
    Thesis Title: Utilization of Internal Resonance in Gyroscope Design Chair: Dr. Woo Soo Kim Committee: Dr. Farid Golnaraghi(Senior Supervisor) Dr. Mehrdad Moallem (Supervisor) Dr. Behraad Bahreyni (Supervisor) Internal Examiner: Dr. Albert Leung External Examiner: Dr. Joseph Cusumano (Penn State) Abstract Coriolis vibratory gyroscopes (CVG) suffer from various error sources including manufacturing imperfections and environmental factors. Most design constraints incorporate having the drive and sense mode natural frequencies equal. This poses a difficult solution called “mode matching” requiring complex and extremely accurate on-chip electronics. The research discussed in this thesis acts as a proof of concept on utilizing well-established phenomena in the field of nonlinear dynamics and vibration in the design of CVG gyroscopes with improved stability against manufacturing imperfections. A significant increase in the sense mode bandwidth is shown by structurally tuning the system to 2:1 resonance between the sense and drive modes respectively. A simplified mathematical model of a two-degree-of-freedom system, having quadratic nonlinearities, is obtained and compared qualitatively to more complex models from literature. Experimental results verify numerical simulations, confirming the hypothesis. Additional bandwidth enhancement possibility is established through simple feedback of nonlinear coupling terms obtained from mathematical models.
  • Ben Rolph, MA Project Defence, Political Science
    11:00 AM - 2:00 PM
    November 26, 2014
    Title: Understanding the Dynamics of Political Dysfunction: A Comparative Analysis of Legislatures in Canada and the United States This paper examines the primary categories of dysfunction in the Canadian and American legislatures. The central purpose of this comparative analysis is to explore the range of phenomena associated with legislative dysfunction in both the Canadian Parliament and the United States Congress. My intention is to fill the void of thorough literature on this subject, most specifically in Canada, by categorizing the wide scope of causes of legislative dysfunction into three main classifications - Institutional, Ideological, and Sociological. Two central hypotheses will be considered during the analysis. First, I believe the differentiation of institutional mechanisms and legislative processes between Canada and the United States will produce distinct causes of national-level legislative dysfunction. Second, despite these institutional differences, the two nations will largely share ideological and sociological sources of dysfunction. Evidence suggests that despite utilizing two distinct systems of government, there exist some noteworthy similarities in this regard between the two countries. The analysis will make use of many sub-variables and contemporary issues that are present in the legislatures in order to illustrate the extent to which dysfunction persists. After providing background and justification for these three main categories, I will examine how they interact, and what effect they are having on the functionality of the legislatures in both nations. Chair - Dr. Laurent Dobuzinskis Senior Supervisor - Dr. David Laycock Supervisor - Dr. Andrew Heard External Examiner - Dr. Eline de Rooij
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