Browsing Theses by Title
Now showing items 10294-10313 of 15628
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On A New Approach to Model Reference Adaptive Control
(University of Waterloo, 2008-08-12)The objective of adaptive control is to design a controller that can adjust its behaviour to tolerate uncertain or time-varying parameters. An adaptive controller typically consists of a linear time-invariant (LTI) compensator ... -
On a Question of Wintner Concerning the Sequence of Integers Composed of Primes from a Given Set
(University of Waterloo, 2007-09-27)We answer to a Wintner's question concerning the sequence of integers composed of primes from a given set. The results generalize and develop the answer to Wintner’s question due to Tijdeman. -
On Achieving Secure Message Authentication for Vehicular Communications
(University of Waterloo, 2010-05-19)Vehicular Ad-hoc Networks (VANETs) have emerged as a new application scenario that is envisioned to revolutionize the human driving experiences, optimize traffic flow control systems, etc. Addressing security and privacy ... -
On Achieving Unconditionally Secure Communications Via the Physical Layer Approaches
(University of Waterloo, 2018-02-12)Due to the broadcast nature, wireless links are open to malicious intrusions from outsiders, which makes the security issues a critical concern in the wireless communicationsover them. Physical-layer security techniques, ... -
On Algorithms, Separability and Cellular Automata in Quantum Computing
(University of Waterloo, 2007-09-26)In Part I of this thesis, we present a new model of quantum cellular automata (QCA) based on local unitary operations. We will describe a set of desirable properties for any QCA model, and show that all of these properties ... -
On Amenability Properties and Coideals of Quantum Groups
(University of Waterloo, 2022-07-27)We study amenability type properties of locally compact quantum groups and subobjects of quantum groups realized as submodules of their von Neumann algebras. An important class of such subobjects are the coideals, which ... -
On an Electron Spin Resonance Spectrometer for Quantum Information Processing
(University of Waterloo, 2011-01-24)Electron spins are an attractive candidate for an implementation of quantum information processing (QIP) due to high polarization, fast control and long coherence times. Control in electron spin resonance benefits from ... -
On an Instrument for the Coherent Investigation of Nitrogen-Vacancy Centres in Diamond
(University of Waterloo, 2013-09-27)It is my hope that this thesis may serve as a guide for future students wishing to build a microscope from scratch. The design and construction of a scanning, confocal fluorescence microscope equipped with shaped microwave ... -
On Asynchronous Interference Channels
(University of Waterloo, 2016-11-15)In the first part of the thesis, a decentralized wireless network of separate transmitter-receiver pairs is studied where there is no central controller to assign the resources to the users and users do not explicitly ... -
ON BRANDS | An Investigation into the Nature of Consumer Brands | Are they real or constructed?
(University of Waterloo, 2014-10-08)This thesis investigates the nature of consumer brands in the context of the contemporary realism debate. It comprises three chapters. The first chapter introduces the what, the why and the how of brands, to wit: I describe ... -
On Capacity-Achieving Input Distributions to Additive Vector Gaussian Noise Channels Under Peak and Even Moment Constraints
(University of Waterloo, 2021-08-25)We investigate the support of the capacity-achieving input distribution to a vector-valued Gaussian noise channel. The input is subject to a radial even-moment constraint and, in some cases, is additionally restricted ... -
On Causal Video Coding with Possible Loss of the First Encoded Frame
(University of Waterloo, 2014-01-21)Multiple Description Coding (MDC) was fi rst formulated by A. Gersho and H. Witsenhausen as a way to improve the robustness of telephony links to outages. Lots of studies have been done in this area up to now. Another ... -
On Chinese Architecture
(University of Waterloo, 2006)From the four-thousand-year obsession with timber structures to the radical fascination of steel and glass in recent decades, in a Westerner's eye, Chinese architecture evolves either too slow or too fast. The current ... -
On Cohomological Algebras in Supersymmetric Quantum Field Theories
(University of Waterloo, 2019-08-16)In this thesis we compute certain supersymmetric subsectors of the algebra of observables in some QFTs and demonstrate an application of such computation in checking an instance of Holographic duality. Computing the algebra ... -
On coloring digraphs with forbidden induced subgraphs
(University of Waterloo, 2023-04-25)This thesis mainly focuses on the structural properties of digraphs with high dichromatic number. The dichromatic number of a digraph $D$, denoted by $\dichi(D)$, is designed to be the directed analog of the chromatic ... -
On Combinatorics, Integrability and Puzzles
(University of Waterloo, 2020-10-23)In the last decade, many old and new results in combinatorics have been shown using the theory of quantum integrable systems from particle physics. The key to solving such problems is the derivation of an underlying ... -
On Common Grounds
(University of Waterloo, 2022-08-29)Canada’s housing market has been unaffordable, inaccessible, and commodified for a long time. Due to the ever-increasing real-estate prices and critical housing shortages, there has been an elevated need for more alternative ... -
On Competition for Undergraduate Co-op Placement: A Graph Approach
(University of Waterloo, 2015-09-30)The objective of this thesis is to improve the co-operative (co-op) education process by analyzing the relationships among academic programs in the context of the co-op job market. To do this, we propose and apply a novel ... -
On Computable Online Learning
(University of Waterloo, 2023-04-27)We initiate a study of computable online (c-online) learning, which we analyze under varying requirements for "optimality" in terms of the mistake bound. Our main contribution is to give a necessary and sufficient condition ... -
On Constant Factors in Comparison-Based Geometric Algorithms and Data Structures
(University of Waterloo, 2014-09-11)Many standard problems in computational geometry have been solved asymptotically optimally as far as comparison-based algorithms are concerned, but there has been little work focusing on improving the constant factors ...