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Browsing School of Science and Technology (2015-2019) by Subject "Research Subject Categories::TECHNOLOGY"

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Browsing School of Science and Technology (2015-2019) by Subject "Research Subject Categories::TECHNOLOGY"

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  • Adaptive PID Speed Control Design for Permanent Magnet Synchronous Motor Drives 
    Jung, Jin-Woo; Leu, Viet Quoc; Do, Ton Duc; Kim, Eun-Kyung; Choi, Han Ho; Leu, Viet Quoc (2014)
    This paper proposes an adaptive proportionalintegralderivative (PID) speed control scheme for permanent magnet synchronous motor (PMSM) drives. The proposed controller consists of three control terms: a decoupling ...
  • Automated Theorem Proving in a Chat Environment 
    Zhumagambetov, Rustam; Sterling, Mark (Nazarbayev University School of Science and Technology, 2018)
    We present a chat bot interface for the Coq proof assistant system. The bot provides a new modality of interaction with Coq that functions across multiple devices and platforms. Our system is particularly suitable for ...
  • Chaotic properties of spin lattices near second-order phase transitions 
    de Wijn, A. S.; Hess, B.; Fine, B. V. (American Physical Society, 2015-12-30)
    We perform a numerical investigation of the Lyapunov spectra of chaotic dynamics in lattices of classical spins in the vicinity of second-order ferromagnetic and antiferromagnetic phase transitions. On the basis of this ...
  • A Generalized Observer for Estimating Fast–Varying Disturbances 
    Ton, Duc Do; Nguyen, Hoach The (IEEE, 2018-04)
    In this paper, a generalized disturbance observer (GDO) is proposed for estimating a broad range of disturbances including fast-varying ones. The estimation error of the proposed GDO is proven to be ultimately bounded ...
  • Neutrino-driven Convection in Core-collapse Supernovae: High-resolution Simulations 
    Radice, David; Ott, Christian D.; Abdikamalov, Ernazar; Couch, Sean M.; Haas, Roland; Schnetter, Erik (American Astronomical Society, 2016-03)
    We present results from high-resolution semiglobal simulations of neutrino-driven convection in core-collapse supernovae. We employ an idealized setup with parameterized neutrino heating/cooling and nuclear dissociation ...
  • Qubit lattice coherence induced by electromagnetic pulses in superconducting metamaterials 
    Ivić, Z.; Lazarides, N.; Tsironis, G.P. (Nature Research, 2016)
    Quantum bits (qubits) are at the heart of quantum information processing schemes. Currently, solid-state qubits, and in particular the superconducting ones, seem to satisfy the requirements for being the building blocks ...
  • Turbulent chimeras in large semiconductor laser array 
    Shena, J.; Hizanidis, J.; Kovanis, V.; Tsironis, G.P. (Nature Research, 2017-02)
    Semiconductor laser arrays have been investigated experimentally and theoretically from the viewpoint of temporal and spatial coherence for the past forty years. In this work, we are focusing on a rather novel complex ...