VictorJuiz/thesis huggingface dataset:
Successful Priority Setting: A Conceptual Framework and an Evaluation Tool

A growing demand for services and expensive innovative technologies is threatening the sustainability of healthcare systems worldwide. Decision makers in this environment struggle to set priorities appropriately, particularly because they lack consensus about which values should guide their decisions; this is because there is no agreement on best practices in priority setting. Decision makers (or ‘leaders’) who want to evaluate priority setting have little guidance to let them know if their efforts were successful t. While approaches exist that are grounded in different disciplines, there is no way to know whether these approaches lead to successful priority setting. The purpose of this thesis is to present a conceptual framework and an evaluation tool for successful priority setting. The conceptual framework is the result of the synthesis of three empirical studies into a framework of ten separate but interconnected elements germane to successful priority setting: stakeholder understanding, shifted priorities/reallocation of resources, decision making quality, stakeholder acceptance and satisfaction, positive externalities, stakeholder engagement, use of explicit process, information management, consideration of values and context, and revision or appeals mechanism. The elements specify both quantitative and qualitative dimensions of priority setting and relate to both process and outcome aspects. The evaluation tool is made up of three parts: a survey, interviews, and document analysis, and specifies both quantitative and qualitative dimensions and relates to both procedural and substantive dimensions of priority setting. The framework and the tool were piloted in a meso-level urban hospital. The pilot test confirmed the usability of the tool as well as face and content validity (i.e., the tool measured relevant features of success identified in the conceptual framework). The tool can be used by leaders to evaluate and improve priority setting.

Keywords: priority setting
evaluation
health services reserach
conceptual framework
Advisor: Martin, Douglas K.
The Spatiality of Social Identities: Taiwanese Migrant Women Practice Everyday Spaces in Toronto

What part does migration play in the construction and reconstruction of social identity? What kind of social relations are produced and reproduced through the migration process? What are the manifestations of power involved in the process of constructing and negotiating social identities through space? These are the central questions in this research. This research not only draws upon current literature on migrant women, but also expands it to address the complexity of construction of social identities and places through migration processes by incorporating critical social theories and feminist geography into the research. I examine embodied geographical experiences and the geography of emotions, by looking at current Taiwanese migrant women’s everyday practices in Toronto. This research provides concrete examples – from a substantial sample of individuals – to support feminist geographers’ arguments on women’s experiences in space. I employ Bourdieu’s concept of habitus to illustrate how personal and private space is constructed and reconstructed by a complex interplay between different discourses and practices, and how new spaces and practices are created for new identity claims. I also examine how the dynamics of habitus shifts through displacement. By looking at the generative aspect of habitus, this research extends the existing scope of the notion of habitus. Collecting more than 125 hours of in-depth interviews with Taiwanese migrant women in Toronto, I examine multidimensional re-configurations of the everyday practices of Taiwanese migrant women in Toronto. Research findings regarding the hidden geography of everyday language practice, the reconstruction of food culture and the exploration of culinary practice, the negotiation of home practice, and the creation of new spaces for new identity claims provide a complicated picture that grasps the contingency and fluidity of identity construction. In addition to concepts of ‘third space’ and ‘paradoxical space,’ my research shows that metaphoric expressions, what I call ‘glass wall’, ‘comfort zone’, ‘unlocked spaces’, ‘dialogical space’ and ‘provocative space’ are important to unveil dynamic pictures of geographical experiences along migration. Indeed, space plays an integral role in the making of social identity.

Keywords: Spatiality
Social Identity
Migration
Advisor: Ruddick, Susan M.
Marginal Regions in Discursive Space: An Examination of Socio-economic Conditions, Development Paths and Spatial Differentiation in the Economic Systems of the Canadian and Russian North

Marginal regions in discursive space: an examination of socio-economic conditions, development paths and spatial differentiation in the economic systems of the Canadian and Russian North Andrey N Petrov Degree: Doctor of Philosophy Department of Geography University of Toronto 2008 This dissertation is an effort to provide a new insight into the problem of regional development in remote areas under changing global and national political and economic conditions. It undertakes an assessment of shared economic histories, recent changes and future possibilities of socioeconomic prosperity and sustainability in marginal regions of Canada and Russia. The first chapter re-examines the structure of Canada’s and Russia’s space-economies by evoking the concept of regional multichotomies and economic marginality. I consider whether outcomes, geographic patterns and spatial logics of regional differentiation in the two countries are similar and explore the evidence of similarity between the North(s). Finding development outcomes in the Russian and Canadian North strikingly similar, the second chapter uses a combination of discursive analysis and regulation theory to re-interpret the origins of present-day problems and examine the genealogy of northern development. It argues that the Canadian and Russian northern development regimes shared profound commonalities. From these positions, the chapter compares and critiques past and present policies of regional development in the two Norths, and discusses their viability. The third chapter dwells upon a concept of ‘development regimes’ to analyze and compare contemporary regional development policies. It further investigates how recent economic development policies in the two Norths are adapting to changing economic and political realities, and if they were able to deliver desirable results to northern communities. The chapter compares and critiques contemporary policies and discusses possible alternative perspectives that reconcile an emerging postcolonial paradigm of development and realities of post-Fordism. It introduces the notion of the neo-staple development regime and describes its manifestations (Impact and Benefit Agreements). The fourth chapter presents a case for fostering knowledge based development and creative capital in the North. It builds on the innovation systems and institutional geography literatures to argue that the creative capital in the periphery is a pivotal factor of regional development. The chapter provides a conceptualization and empirical analysis of the creative class in remote regions. Contrary to the metropolitan bias, I argue that creative ‘hot spots’ beyond metropolis exist, and could become the centres of regional reinvention, if appropriate policies are introduced in support.

Keywords: Canadian and Russian North
economic development
economic geography
regional policy
Advisor: DiFrancesco, Richard J.
Dynamic Two-place Indirect Verbs in French: A Synchronic and Diachronic Study in Variation and Change of Valence

This dissertation provides an account of an often-noted change in the history of French: the shift in the expression of the internal argument of a small class of dynamic two-place verbs best represented by aider ‘to help’ from “dative”, i.e., as an indirect object with the preposition à, to “accusative”, i.e., as a direct object with no preposition. The change does not appear to be correlated with a change in the meaning of the verbs. Traditional commentators have viewed it as random, affecting only a few lexical items, rather than systematic. One of the central results of this thesis is that the valency change affects a class of some twenty verbs at approximately the same period and it follows the same time course. Moreover, three properties distinguish this class of verbs from all others taking indirect objects in French: following current ideas about the syntactic manifestation of verbs and their arguments, they have a non relational argument structure, they do not possess lexical directionality, and they select for first or third order entities. These facts suggest that a structural change underlies the change in the realization of the internal argument. Adopting Lightfoot’s (1999, 2006) “cue-based” approach to language change, it is proposed that the valency change is a result of the loss of a functional item encoding directionality. Directionality is a derived property in Medieval French, available in particular to prepositions. It is demonstrated that when à was able to encode direction, it was also able to license first and third order complements in a broader range of contexts, namely, with aider-type verbs. The loss of this functional item is also correlated with several other structural changes that occurred in the 16th and 17th century.

Keywords: French
linguistics
diachronic syntax
verbs
argument structure
Advisor: Roberge, Yves
Economic Analyses of Ontario's Stumpage Pricing System

The softwood lumber trade dispute between Canada and the United States has centered on the debate over the existence of a stumpage subsidy in Canada and recently on dumping by the Canadian softwood lumber producers in the U.S. markets. This thesis contains three essays that investigate the subsidy and dumping issues in this dispute. The results of these analyses indicate the economic performance of Ontario’s stumpage system. The first essay investigates the market performance of Ontario’s stumpage system by examining the long-run equilibrium and Granger-causality relationships between the stumpage prices and the market prices of various end products (lumber, pulp and wood composites) from June 1995 to February 2005 using Johansen’s multivariate co-integration approach and the Granger-causality test. Test results indicate that in terms of SPF (spruce, pine, fir) for lumber and pulp, Ontario’s stumpage system can establish stumpage prices that have the potential to reflect the market values of timber. However, there is a need to modify the system for the other products. In the second essay, an Enhanced Parity Bounds Model (EPBM) is developed and used to examine the discrepancy between the stumpage price of SPF timber for producing lumber and its market value from June 1995 to January 2007. The results show that in the short run, the stumpage prices were below or above the market values. However, in the long run, the underpayment and overpayment will even each other out. The results, therefore, imply that Ontario’s stumpage system has the ability to capture the full economic rents in the long run and thus does not confer a subsidy to Ontario’s softwood lumber producers. The third paper examines the issue of whether Ontario’s softwood lumber industry had dumped softwood lumber into a major US market from April 1996 to September 2006 using the EPBM. This is a critical issue for Ontario’s stumpage system because dumping could lead to lower stumpage prices under the current stumpage system. This analysis indicates that the industry gained considerably more profit from the U.S market than from the home market and did not dump lumber in the US market during this period.

Keywords: Stumpage Pricing System
Softwood Lumber
Trade Dispute
Advisor: Kant, Shashi
Clearcut Solutions? An Evaluation of Partial Harvesting in the Black Spruce Boreal Forest

Bringing together field-based empirical studies, a simulation modelling experiment, and a critical analysis of the natural disturbance emulation paradigm, this thesis evaluates partial harvesting in the black spruce boreal forest. Forest management in Ontario is required to emulate natural disturbances, but in regions of the boreal forest where fire cycles are long, regulated even-aged management by clearcutting has truncated forest age-class distributions. Partial harvesting has been proposed as a means to maintain the structural complexity and biodiversity associated with old forests while allowing continued timber production. Despite the potentially important role of partial harvesting in a strategy for sustainable boreal forest management, little research has examined post-harvest stand development, a critical determinant both of habitat and timber supplies.I used a chronosequence approach in combination with dendroecological techniques, a neighbourhood modelling framework, and maximum likelihood statistical methods to quantify stand dynamics over the first decade after partial harvest in the black spruce (Picea mariana) boreal forest of northeastern Ontario, Canada. Residual trees displayed large but time-lagged growth responses to partial harvest. The largest responses were found in young trees, while old trees were largely unable to react to improved post-harvest resource availability. Growth responses were offset by elevated rates of residual-tree mortality, which peaked in the first year after harvest at nearly 13 times the pre-harvest level. Proximity to harvest machinery trails severely escalated the risk of mortality for residual trees. Considering growth and mortality responses together in a forest simulator model, I found that stand development proceeded most rapidly where skidding intensity was reduced and retention areas were aggregated. Given appropriate prescriptions, my results indicate that partial harvesting can be a viable silvicultural option for black spruce boreal forests. However, the ability of partially harvested stands to emulate natural disturbance is questionable, particularly given the strong influence of harvest machinery impacts on post-harvest stand development. I argue that the natural disturbance emulation framework has important flaws and falls short of a justifiable approach for forest management in Ontario.

Keywords: alternative silviculture
black spruce
boreal forest
dendrochronology
growth response
natural disturbance emulation
neighbourhood analysis
partial harvesting
simulation modelling
tree mortality
Advisor: Thomas, Sean C.
Caspersen, John
High-speed Properties of 1.55-micron-wavelength Quantum Dot Semiconductor Amplifiers and Comparison with Higher-Dimensional Structures

This thesis reports an experimental characterization of the ultrafast gain and refractive index dynamics of a novel InAs/InGaAsP/InP quantum-dot (QD) semiconductor optical amplifier (SOA) operating near 1.55-µm wavelengths, assessing its high-speed performance characteristics for the first time. The thesis also studies the influence of the degree of quantum confinement on the dynamics of SOAs by comparing the zero-dimensional (0-D) QD's dynamics to those in 1-D InAs/InAlGaAs/InP quantum-dash (QDash), and 2-D InGaAsP/InGaAsP/InP quantum-well (QW) SOAs, both of which also operate near 1.55-µm wavelengths, and are made with matching or similar materials and structures. The ultrafast (around 1 ps) and long-lived (up to 2 ns) amplitude and phase dynamics of the SOAs are characterized via advanced heterodyne pump-probe measurements with 150-femtosecond resolution. It is found that the QD SOA has an 80-picosecond amplitude, and 110-picosecond phase recovery lifetime in the gain regime, 4-6 times faster than the QDash and QW recovery lifetimes, as well as reduced ultrafast transients, giving it the best properties for high-speed (> 100 Gb/s) all-optical signal processing in the important telecommunications wavelength bands. An impulse response model is developed and used to analyze the dynamics, facilitating a comparison of the gain compression factors, time-resolved linewidth enhancement factors (alpha-factors), and instantaneous dynamic coefficients (two-photon absorption and nonlinear refractive-index coefficients) amongst the three structures. The quantum-dot device is found to have the lowest effective alpha-factor, 2-10, compared to 8-16 in the QW, as well as time-resolved alpha-factors lower than in the QW—promising for reduced-phase-transient operation at high bitrates. Significant differences in the alpha-factors of lasers with the same structure are found, due to the differences between gain changes that are induced optically or through the electrical bias. The relative contributions of stimulated transitions and free-carrier absorption to the total carrier heating dynamics in SOAs of varying dimensionality are also reported for the first time. Examining the QD electroluminescence and linear gain spectra in combination with the carrier dynamics also brings about conclusions on the nature of the quantum confinement, dot energy-level structure, and density of states—aspects of the material that have not been previously well understood.

Keywords: quantum dot
semiconductor optical amplifiers
all-optical switching
semiconductor nonlinear dynamics
semiconductor lasers
nonlinear optics
semiconductor physics
linewidth enhancement factor
two-photon absorption
quantum well
quantum dash
ultrafast lasers
optical signal processing
Advisor: Aitchison, J. Stewart
Smith, Peter W. E.
Large-scale Peer-to-peer Streaming: Modeling, Measurements, and Optimizing Solutions

Peer-to-peer streaming has emerged as a killer application in today's Internet, delivering a large variety of live multimedia content to millions of users at any given time with low server cost. Though successfully deployed, the efficiency and optimality of the current peer-to-peer streaming protocols are still less than satisfactory. In this thesis, we investigate optimizing solutions to enhance the performance of the state-of-the-art mesh-based peer-to-peer streaming systems, utilizing both theoretical performance modeling and extensive real-world measurements. First, we model peer-to-peer streaming applications in both the single-overlay and multi-overlay scenarios, based on the solid foundation of optimization and game theories. Using these models, we design efficient and fully decentralized solutions to achieve performance optimization in peer-to-peer streaming. Then, based on a large volume of live measurements from a commercial large-scale peer-to-peer streaming application, we extensively study the real-world performance of peer-to-peer streaming over a long period of time. Highlights of our measurement study include the topological characterization of large-scale streaming meshes, the statistical characterization of inter-peer bandwidth availability, and the investigation of server capacity utilization in peer-to-peer streaming. Utilizing in-depth insights from our measurements, we design practical algorithms that advance the performance of key protocols in peer-to-peer live streaming. We show that our optimizing solutions fulfill their design objectives in various realistic scenarios, using extensive simulations and experiments.

Keywords: Computer networking
Peer-to-Peer Streaming
Advisor: Baochun, Li
Cooperative Communication Schemes in Wireless Networks: A Cross Layer Approach

In order to improve the Quality of Service in wireless networks it is crucial to design and optimize the communication algorithms based on the underlying Physical and Link Layers. In this thesis we show that if instead of the link abstraction used in traditional wireless networking we rely on the much broader definition of a link, used in the context of cooperative communication, we can improve the performance of relay transmission systems operating over the wireless medium. From a networking perspective there are a whole host of layering and cross-layer design issues that enable one to propose optimal cooperative algorithms for wireless communication. Most of the research in this area has been concentrated on the physical layer issues. In this thesis, we consider the interaction of the physical layer cooperative link with the higher layers, in particular the Medium Access Control Layer, and show that by appropriate protocol design we can improve the performance of wireless networks by using cooperation. Enabling cooperation among nodes in an optimal manner can lead to significant increase in the throughput for multi-hop wireless networks. We study and design cooperative protocols that lead to this throughput increase and quantify the appropriate level of cooperation among the users which leads to improving QoS.

Keywords: Electrical & Computer Engineering
Wireless Networks
Cooperative Communication
Advisor: Liang, Ben
Time and Frequency Evolution of the Precursors in Dispersive Media and their Applications

Until now, few rigorous studies of the precursors in structures exhibiting superluminal group velocities have been performed. One dimensional photonic crystals(1DPC) and active Lorentzian media are among the ones which are able to exhibit superluminal propagation. In the first part of the thesis we have studied the evolution of the precursors in active Lorentzian media and 1DPC. The problem of the propagation of the precursors in active Lorentzian media is addressed, by employing the steepest descent method to provide a detailed description of the propagation of the pulse inside the dispersive medium in the time domain. The problem of the time and frequency evolution of the precursors in 1DPC is studied, using the finite-difference time-domain (FDTD) techniques in conjunction with joint time-frequency analysis (JTFA). Our study clearly shows that the precursor fields associated with superluminal pulse propagation travel at subluminal speeds. It is also shown that FDTD analysis and JTFA can be combined to study the dynamic evolution of the transient and steady state pulse propagation in dispersive media. The second part of the thesis concentrates on the applications of the precursors. An interesting property of the precursors is their lower than exponential attenuation rate inside a lossy dielectric, such as water. This property of the precursors has made them an interesting candidate for applications such as ground penetrating radar and underwater communication. It was recently pointed out that a pulse which is generated inside of water and assumes the shape of the Brillouin precursor would be optimally suited for long range propagation in water (described by the single-pole Debye model). Here, we have considered the optimal pulse propagation problem, accounting for the interaction of the pulse with the air/water interface at oblique incidence. In addition, we argue that pulse excitations which are rough approximation of the Brillouin precursor will eventually evolve into the Brillouin precursor itself shortly after they enter water. Therefore, the excitation of a long-propagating pulse is not sensitive to its shape. Finally, we studied the performance of the optimized pulse in terms of the energy of the scattered field from an object inside water. Based on the simulation results the optimized pulse scattered field has higher energy compared to pulses with the same energy and different temporal distribution. The FDTD technique is employed in all the simulations.

Keywords: Precursors,
Finite Difference Time Domain Method
Advisor: Mojahedi, Mohammad