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    Alteration of Metasedimentary Rocks Associated with Gold Mineralization at Young-Davidson Gold Mine
    (University of Waterloo, 2026-07-27) Quaye, Dinah Ayeley Wankyimah
    The Young-Davidson gold mine is situated within the southwestern part of the Abitibi greenstone belt in Northeastern Ontario. It is part of the Western Cadillac-Larder Lake region, known for its lithological complexities and hydrothermal alteration. Within the Young-Davidson gold mine, syenite hosts the majority of gold mineralization; however, the potential of gold in the metasedimentary rocks are underexplored, although gold mineralization does extend into them. This study integrated hyperspectral imaging, petrography, electron probe microanalysis (EPMA), and lithogeochemical data to understand the alteration and its relationship to gold mineralization in the metasedimentary rocks at Young-Davidson. Hyperspectral imaging and EPMA show that alteration-related white mica is phengitic and can be compositionally divided into two groups; one of these is associated with higher gold grades. Gold mineralization is also associated with chlorite and pyrite, with higher bulk rock Fe contents generally associated with elevated gold grades. The presence of pyrite typically increases with increasing alteration intensity and higher gold grade. A spatial association between chlorite and pyrite with anhedral biotite suggests that biotite breakdown contributed to pyrite growth, and an increased intensity of biotite alteration is indicative of gold mineralization. Both the syenite and the metasedimentary rocks have pyrite as the dominant sulfide phase however; a clear contrast in the oxide phase is noted. Overall, these findings highlight sulfidation and the availability of Fe-rich assemblages as an important control on gold mineralization in the metasedimentary rocks at Young-Davidson, and the importance of incorporating a variety of methods to understand gold mineralization, as well as the relevance of hyperspectral imaging as a recently adapted tool in mineral exploration.
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    Challenging Stigma and Enacting Citizenship Through Liberatory-Relational Songwriting with People Living with Dementia
    (University of Waterloo, 2026-07-23) Kurta, Taylor
    People living with dementia (PLwD) frequently experience stigma, social exclusion, and limited opportunities to participate in creative and collaborative processes that centre their voices and lived experiences. Dominant biomedical and tragedy narratives of dementia often emphasize decline, dependency and the total loss of self, overlooking the relational and creative capacities of PLwD. This is especially true for PLwD later in the disease progression who are written off and denied their social citizenship rights, including opportunities to contribute to their own and others’ lives. In response to these limitations, this dissertation explores how collaborative songwriting rooted in liberatory and relational processes supports the enactment of relational citizenship and challenges stigmatizing discourses of dementia. Grounded in relational and critical theoretical perspectives, including relational caring philosophy, relational citizenship, and community and music-centred approaches to music therapy, this research employed liberatory/activist arts and critical arts-based inquiry to facilitate a collaborative songwriting project with nine PLwD in a residential care home in Ontario, Canada. Over nine weeks, the songwriters engaged in a series of songwriting sessions culminating in the public release of an original song, Wisdom and Respect, and an accompanying short film. Analysis of the songwriting sessions illustrated how the liberatory, relational process created opportunities for songwriters to share their personal histories and experiences, attend to one another, negotiate creative decisions, and engage in critical dialogue, reflection, and collective meaning-making through music. Through this analysis, the Liberatory-Relational Dementia Songwriting Framework was developed, identifying key relational literacies (i.e., processes and ways of being and relating in the world that support embodied capacities and cultivate opportunities for relational connections to flourish) that supported the songwriting process. These relational literacies include relational knowledging, relational attuning, and relational decision-making. The research also demonstrated how the song and film functioned as a counter-narrative to dominant discourses of dementia by highlighting the relational, creative, and expressive capacities of the songwriters. Preliminary feedback from audience members at the community release party indicated shifts in perceptions of the capacities and personhood of PLwD, with some participants expressing intentions to change how they interact and engage with PLwD in their own lives. This research contributes theoretical, methodological, and practical insights to dementia studies, music therapy, and leisure studies. It challenges dominant biomedical conceptualizations of leisure, and specifically music in the dementia context, and instead offers a liberatory approach that recognizes and supports the continued and evolving capacities of PLwD later in the disease progression to engage in social justice projects. As both a theory and a relational practice, relational citizenship involves knowing and being known, belonging and solidarity, attunement and recognition, and the agency to act together. The Liberatory-Relational Dementia Songwriting Framework created opportunities for these dimensions to be expressed and sustained within the group. By documenting a collaborative songwriting methodology grounded in relational and liberatory arts-based approaches, this dissertation offers a framework for researchers, practitioners, and communities seeking to use participatory arts to challenge stigma and support the enactment of relational citizenship with PLwD, including those later in the disease progression.
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    Monetary policy regimes and beliefs
    (University of Waterloo, 1999-06) Andolfatto, David; Gomme, Paul
    This paper investigates the role of beliefs over monetary policy in propagating the effects of monetary policy within the context of a dynamic, stochastic general equilibrium model. In our model, monetary policy periodically switches between low and high money growth regimes. When individuals are unable to directly observe the current regime, they will assign some probability to the low money growth, low inflation regime base don observed money growth rates. We show that for an empirically relevant money growth process, beliefs evolve slowly in the wake of a regime change. As a result, our model is able to capture some of the observed persistence of real and nominal variables following such a regime change.
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    Immigration control and the welfare state
    (University of Waterloo, 1997-01-28) Myers, Gordon M.; Papageorgiou, Yorgos Y.
    We examine immigration policy and its redistributive effects using a model of a rich country which must spend on boarder control in order to regulate immigration from a poor country. There are owners and workers in the rich country, and a public sector which makes redistributive transfers from owners to workers. We first consider the case where illegal immigrants have access to the public sector, a situation currently observed in many countries. We show that as border control becomes more expensive inequality in the rich country increases, redistributive transfers may increase or decrease, some immigration is permitted and foreign aid may be used by the rich country in order to reduce the migration pressure along its border with the poor country. Because of nonconvexities, we also show that a small decrease in the aversion to inequality or a small increase in the poor country's population can lead to illegal immigrants from the public sector (e.g. California Proposition 187). We find that the possibility of collapse vanishes and that the rich country takes the toughest official stance on immigration but does not enforce it with border controls.
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    Technology diffusion and aggregate dynamics
    (University of Waterloo, 1998-01) Andolfatto, David; MacDonald, Glenn M.
    This paper develops and analyzes a macroeconomic model in which aggregate growth and fluctuations arise from the discovery and diffusion of new technologies; there are no exogenous aggregate shocks. The temporal behavior of aggregates is driven by individuals' efforts to innovate and/or make use of others' innovations. Parameters describing preferences, production possibilities and learning technologies are estimated using post-war U.S. data. The model delivers predicted aggregates that grow and fluctuate much like the data. The key features of post-war growth are explained by new technologies that differ in terms of the magnitude of their improvement over existing methods and the difficulty of acquiring them. The model implies a negative trend in technological dispersion, and that the generally lower growth witnessed during the last two decades is the result of new technologies offering comparatively minor or less broadly-applicable improvements. Data on the growing and fluctuating share of engineering Ph.D.s support the model's technological interpretation of the growth facts, and data on patent applications and adult schooling are consistent with the notion that newer technologies are more specific and proprietary.