Browsing by Author "Xie, Zhizhang"

Now showing items 1-15 of 15

    • A Single Stage High-Frequency Rectifier for EV Charging Applications 
      Pool Mazun, Erick Ivan (2019-06-13)
      In this work, a single-stage three-phase rectifier topology with high-frequency isolation for EV (Electric Vehicle) fast-charging stations is proposed. By using a multipulse approach, low-order harmonics in the input current ...
    • Advanced Power Electronics Topologies and Control for Electric Distribution and Microgrid Applications 
      Ramos-Ruiz, Jorge Alfonso (2020-04-01)
      The importance of power electronics is increasingly evident as the world economy becomes more electrified. Power electronics play a key role in enabling renewable energy generation growth. Every year the capacity of ...
    • Asymptotics of the Relative Reshetikhin-Turaev Invariants 
      Wong, Ka Ho (2023-04-28)
      In this dissertation, we study the asymptotic expansion conjecture of the relative Reshetikhin-Turaev invariants proposed by T. Yang and the author in [65] for all pairs (M, L) satisfying the property that M∖L is homeomorphic ...
    • Bounds for the Rank of the Finite Part of Operator K-Theory and Polynomially Full Groups 
      Samurkas, Suleyman Kagan (2018-04-13)
      We derive a lower and an upper bound for the rank of the finite part of operator K-theory groups of maximal and reduced C*-algebras of finitely generated groups. The lower bound is based on the amount of polynomially growing ...
    • C algebraic Higher Signatures on Non-Witt Spaces 
      Liu, Mingyu (2021-05-03)
      Signature plays an important role in geometry and topology. In the space with singularity, Goresky and MacPherson extend the signatures to oriented pseudomanifolds with only even codimensional stratums by using generalized ...
    • Dynamic Analysis of Deepwater Multi-Segment Mooring Lines Using Modal Superposition 
      Tang, Shijin (2017-01-24)
      This thesis starts from the construction of a mathematical model of the multi-segment mooring line, based on the work-energy variational method. The equations of motion in both Cartesian and Lagrange local coordinate systems ...
    • An Intelligent Human-Tracking Robot Based-on Kinect Sensor 
      Chen, Jinfa (2015-12-10)
      This thesis provides an indoor human-tracking robot, which is also able to control other electrical devices for the user. The overall experimental setup consists of a skid-steered mobile robot, Kinect sensor, laptop, ...
    • Iterated Monodromy Groups of Rational Mappings 
      Kuang, Zheng (2018-07-20)
      We give the wreath recursion presentations of iterated monodromy groups of post-critically finite quadratic rational mappings fc whose ramification portrait are of the form 0 ↦ av2 ↦ … ↦ avm ↦1 ↦ ∞ ⇌ 1 To find a pattern ...
    • Lower Algebraic K-Theory of Rings 
      Zhu, Qinfeng (2018-05-02)
      This thesis is a first step towards a controlled algebraic K-theory. We give explicit formulas for the proof of Fundamental Theorem of Algebraic K-Theory. As a consequence, we provide explicit estimates on the control of ...
    • Numerical Study of Hydrofoils for Water Turbines 
      Chizhuthanickel Sunny, Richards (2016-08-05)
      The major objective of this research was to suggest a water turbine design with higher power efficiency by conducting a parametric study of hydrofoil shapes, modified hydrofoil shapes with circular void, tip speed ratio, ...
    • Quantitative K-theory for Banach Algebras and Its Applications 
      Chung, Yeong Chyuan (2017-05-24)
      This dissertation can be said to fall under the broad theme of computability of K-theory of Lp operator algebras (and perhaps more general Banach algebras). The first part of the dissertation is about a variant of K-theory ...
    • Secondary Higher Invariants and Cyclic Cohomology for Groups of Polynomial Growth 
      John, Sheagan Abdallah Karan Arlene (2022-04-05)
      Given a complete n-dimensional Riemannian manifold X admitting a suitable action by a group Γ, each Γ-equivariant elliptic differential operator D gives rise to a higher index class IndΓ(D). A central strength of this ...
    • Smart Distribution Transformer for Smart Grid 
      Kang, Taeyong (2016-03-09)
      In this thesis, a smart distribution transformer which improves power quality in the electrical power distribution grid is discussed. The proposed system is comprised of an existing line frequency (LF) distribution transformer ...
    • Strong Relative Novikov Conjecture 
      Tian, Geng (2019-06-19)
      This dissertation can be said to consider Relative Strong Novikov Conjecture for a pair of countable discrete groups. The first part of the dissertation is about formulation of the relative Baum-Connes assembly map for a ...
    • The Novikov Conjecture and Extensions of Coarsely Embeddable Groups 
      Deng, Jintao (2020-07-08)
      This dissertation can be said to consider the Novikov conjecture for an extension of coarsely embeddable groups. The first part of the dissertation is about defining a $C^*$-algebra associated with an extension of coarsely ...