Now showing items 1-20 of 1871

    • An integrated personnel allocation and machine scheduling problem for industrial size multipurpose plants 

      Santos, Fernando; Fukasawa, Ricardo; Ricardez-Sandoval, Luis (Elsevier, 2018-01-01)
      This paper describes the development and implementation of an optimization model to solve the integrated problem of personnel allocation and machine scheduling for industrial size multipurpose plants. Although each of these ...
    • Empirical validation of the Gamification User Types Hexad scale in English and Spanish 

      Fortes Tondello, Gustavo; Mora, Alberto; Marczewski, Andrzej; Nacke, Lennart E. (Elsevier, 2018-10-13)
      Gamification, the use of game elements in non-game systems, is now established as a relevant research field in human-computer interaction (HCI). Several empirical studies have shown that gameful interventions can increase ...
    • Pricing and Hedging of Emerging Products in Finance and Insurance 

      Tang, Junsen (University of Waterloo, 2018-12-12)
      This thesis addresses the pricing and hedging issues on the newly-developed financial and insurance products, including simplified hedges for path-dependent options, variable annuities tied with state-dependent fees, and ...
    • An Analysis of Network-Partitioning Failures in Cloud Systems 

      Alquraan, Ahmed (University of Waterloo, 2018-12-10)
      We present a comprehensive study of 136 system failures attributed to network-partitioning faults from 25 widely used distributed systems. We found that the majority of the failures led to catastrophic effects, such as ...
    • Causal Inference with Covariate Balance Optimization 

      Xie, Yuying (University of Waterloo, 2018-12-04)
      Causal inference is a popular problem in biostatistics, economics, and health science studies. The goal of this thesis is to develop new methods for the estimation of causal effects using propensity scores or inverse ...
    • TwitSong: A current events computer poet and the thorny problem of assessment. 

      Lamb, Carolyn (University of Waterloo, 2018-11-29)
      This thesis is driven by the question of how computers can generate poetry, and how that poetry can be evaluated. We survey existing work on computer-generated poetry and interdisciplinary work on how to evaluate this type ...
    • Statistical Models and Methods for Dependent Life History Processes 

      Lee, Jooyoung (University of Waterloo, 2018-11-28)
      This thesis deals with statistical issues in the analysis of complex life history processes which have characteristics of heterogeneity and dependence. We are motivated, in this thesis, by three specific types of ...
    • Affect Lexicon Induction For the Github Subculture Using Distributed Word Representations 

      Jiao, Yuwei (University of Waterloo, 2018-11-06)
      Sentiments and emotions play essential roles in small group interactions, especially in self-organized collaborative groups. Many people view sentiments as universal constructs; however, cultural differences exist in some ...
    • The Estimation of Stochastic Models in Finance with Volatility and Jump Intensity 

      Wilson, David Edward Alexander (University of Waterloo, 2018-10-26)
      This thesis covers the parametric estimation of models with stochastic volatility, jumps, and stochastic jump intensity, by FFT. The first primary contribution is a parametric minimum relative entropy optimal Q-measure ...
    • A Variability-Aware Design Approach to the Data Analysis Modeling Process 

      Tavares, MariaCristina (University of Waterloo, 2018-10-25)
      The massive amount of current data has led to many different forms of data analysis processes that aim to explore this data to uncover valuable insights such as trends, anomalies and patterns. These processes support ...
    • SURF: Software Update Registration Framework 

      Kim, Woojung (University of Waterloo, 2018-10-25)
      BlockSURF (Blockchain-based Secure Update Registration Framework) or SURF, in short, is a software framework designed to enable developers to build a blockchain-based secure update system which distributes trust over a ...
    • Quantifying Location Privacy In Location-based Services 

      Liu, Peiyuan (University of Waterloo, 2018-10-24)
      Mobile devices (e.g., smart phones) are widely used in people's daily lives. When users rely on location-based services in mobile applications, plenty of location records are exposed to the service providers. This causes ...
    • Coordination in a Peer Production Platform: A study of Reddit's /r/Place experiment 

      Armstrong, Ben (University of Waterloo, 2018-10-24)
      Understanding the factors causing groups to engage in coordinating behaviour has been an active research area for decades. In this thesis, we study this problem using a novel dataset of crowd behaviour from an online ...
    • Designing Efficient Algorithms for Combinatorial Repairable Threshold Schemes 

      Kacsmar, Bailey (University of Waterloo, 2018-10-23)
      Repairable secret sharing schemes are secret sharing schemes where, without the original dealer who distributed the shares, the participants can combine information from their shares to perform a computation that ...
    • Multiple Continuous Subgraph Query Optimization Using Delta Subgraph Queries 

      Kankanamge, Chathura (University of Waterloo, 2018-10-23)
      This thesis studies the problem of optimizing and evaluating multiple directed structural subgraph queries, i.e., those without highly selective predicates on the edges or vertices, continuously in a changing graph. Existing ...
    • On the optimal CFL number of SSP methods for hyperbolic problems 

      Giuliani, Andrew; Krivodonova, Lilia (Elsevier, 2019-01-01)
      We show that the theory for strong stability preserving (SSP) time stepping methods employed with the method of lines-type discretizations of hyperbolic conservation laws may result in overly stringent time step restrictions. ...
    • On Eulerian orientations of even-degree hypercubes 

      Levit, Maxwell; Chandran, L. Sunil; Cheriyan, Joseph (Elsevier, 2018-09-01)
      It is well known that every Eulerian orientation of an Eulerian 2k-edge connected (undirected) graph is strongly k-edge connected. A long-standing goal in the area is to obtain analogous results for other types of connectivity, ...
    • Time-consistent mean–variance portfolio optimization: A numerical impulse control approach 

      Van Staden, Pieter M.; Dang, Duy-Minh; Forsyth, Peter A. (Elsevier, 2018-11-01)
      We investigate the time-consistent mean–variance (MV) portfolio optimization problem, popular in investment–reinsurance and investment-only applications, under a realistic context that involves the simultaneous application ...
    • A lower bound for the two-variable Artin conjecture and prime divisors of recurrence sequences 

      Murty, M. Ram; Séguin, François; Stewart, Cameron L. (Elsevier, 2019-01-01)
      In 1927, Artin conjectured that any integer other than −1 or a perfect square generates the multiplicative group (Z/pZ)× for infinitely many p. In 2000, Moree and Stevenhagen considered a two-variable version of this ...
    • Creating an Emotion Responsive Dialogue System 

      Vadehra, Ankit (University of Waterloo, 2018-10-19)
      The popularity of deep neural networks and vast amounts of readily available multi-domain textual data has seen the advent of various domain/task specific and domain agnostic dialogue systems. In our work, we present a ...

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