VictorJuiz/thesis huggingface dataset:
Weak Gravitational Lensing Uncertainties

Dark matter dominates the mass distribution of the universe, and dark energy determines its expansion. The two are the most mysterious and attractive subjects in modern cosmology, because they provide an opportunity to discover new fundamental physics. Cosmological weak gravitational lensing, which describes the deflection of photons by the gravitational force from large-scale structure in the universe, has been an active area of research in the past decade with many completed, ongoing, and upcoming surveys. Because weak lensing is sensitive to the growth of structure and expansion history of the universe, it is a great tool for improving our understanding of both dark matter and dark energy problems. Cosmic structures have become non-linear by gravitational clustering. The non-linear structures are important to weak lensing, and cause non-Gaussianity in the lensing maps. In this thesis, I study the influence of non-linearity and non-Gaussianity on the uncertainty of lensing measurements. I develop a new method to robustly measure the co-variance matrix of the lensing convergence power spectrum, from simulations. Because 21-cm intensity map may soon cover half sky at redshift 1-4, I build optimal estimators for reconstructing lensing from the 21-cm sources. I develop Gaussian optimal estimators which can be derived analytically, and non-Gaussian optimal estimators which can be constructed numerically from simulation data. I then run a large number of N-body simulations. For both lenses and 21-cm sources, I explore the statistical uncertainties in the simulation data. We show that the non-Gaussianity nature of lensing decreases the dark energy figure of merit by a factor of 1.3 to 1.6 for a few future surveys. We also find that the non-Gaussianity nature of the 21-cm sources reduces the signal to noise ratio by several orders of magnitude. The reconstruction noise saturates at mildly non-linear scales, where the linear power spectrum of the source is Δ2 ∼ 0.2 – 0.5. For 21-cm sources at z ∼ 2 – 4, the lensing reconstruction is limited by cosmic variance at ℓ [special characters omitted] 100, which is in the linear regime of gravitational growth, and robustly predicted by theory. This allows promising constraints to various modified gravity and dark energy models.

Keywords: cosmology
Advisor: Pen, Ue-Li
Freedom and Finitude: A Study of Heidegger and Foucault

The primary task of this work is a comparative analysis of the understanding of ‘freedom’ as presented in the works of Martin Heidegger and Michel Foucault. I argue that, taken together, Heidegger and Foucault represent the most systematic and coherent articulation since Marx of the notion that our primary experience of the world is not mediated by consciousness but is, instead, a practical relation. This position permits Heidegger and Foucault to cast freedom not as a property, status or standing to be achieved by the subject, nor as an end-state to be achieved through a developmental anthropology, but rather as an ethical relationship to a field of possibilities—an ethos— and the practices that sustain this relationship. I use this discussion on freedom as a means of also contributing to two other debates, one regarding the general possibility of combining ontological and historical forms of critical analysis and the second, more specific question of Foucault’s relationship to Heidegger.

Keywords: Heidegger
Foucault
Advisor: Beiner, Ronald
Tully, James
Peasants, Bankers and the State: Forging Institutions in Neoliberal Turkey

The recent rediscovery of institutions in the study of international development has drawn considerable attention to macro arrangements, but sparked much less interest in mid-range, sectoral institutions and how they are reshaped under dynamic domestic and nondomestic constraints. This study joins the few examples of this latter research focus by offering a typology of sectoral institutional pathways in contemporary late developers. The typology incorporates four variables: pre-existing institutions, international norms, technocratic engineering, and coalition politics. It is argued that from careful pairings of these variables, for which the sectoral effects of internationalization and the intensity of domestic political competition are used as the main criteria, it is possible to deduce distinct ideal-typical pathways: insulated accommodation, insulated innovation, negotiated accommodation, and negotiated innovation. The typology models the complexity of institutional trajectories, but it cannot predict concrete institutional profiles. Its value is in providing guidance for empirical analysis. The bulk of the study is devoted to applying this framework to the evolution of Turkey’s fiscal, financial and agricultural regimes of governance from 1980 to 2007. This comparative exercise unlocks several empirical mysteries at once: the failure of Turkish governments in the 1990s to readjust the novel fiscal and banking regimes to preempt the perils of democratic instability and rapid financial integration; the surprising persistence of populist-corporatist forms of market governance in agriculture despite the neoliberalism of the 1980s and 1990s; the stark divergence in reform outcomes across these regimes during the intense restructuring efforts of the 2000s; some odd instances of institutional complementarity; and the exotic twists in the fortunes of Turkish peasants and bankers throughout the entire period. A separate chapter extends the typology to four non-Turkish cases to gain comparative insight into the different types of reshaping: Chinese banking, South Korean corporate governance, Mexican agriculture, and Argentine labor markets. Among the main findings of the study are the need to get beyond dichotomous notions of institutional continuity and change, the problematicity of the quest for good institutions via externally-inspired reforms, and the value of mid-range institutional analysis for understanding shifts in collective fortunes and preferences under processes of macro-transformation.

Keywords: institutions
institutional change
Turkey
finance
agriculture
political economy
Advisor: Sandbrook, Richard
"The kind of people Canada wants": Canada and the Displaced Persons, 1943-1953

In 1947 the federal government of Canada began a program to move European Displaced Persons (DP) out of the International Refugee Organization (IRO) camps in Germany and Austria. This program, designed to fill chronic labour shortages in Canada’s resource industries and contribute to a solution for Europe’s refugee crisis, occurred in a transitional moment in Canadian society. Canadians emerged from World War Two with a new sense of Canada’s role in the world, but despite a changed international climate, a new discourse of human rights and a potentially robust economy, old perceptions of race, immigration and economic management lingered in the postwar years complicating the work of a new generation of civil servants, politicians and industry operators. This is a history of the transition. It demonstrates the ways that old and new ideas of the nation, citizenship, race and immigration co-existed. It highlights the significance of the beginnings of a debate on the elimination of discrimination based on race in Canada’s immigration policy; shows the link between economic prosperity and popular support for immigration; and demonstrates the importance of individuals within industry, the civil service and in government in national decision-making. This is an international history, spanning the Atlantic and bringing a global perspective to local experience in Canadian industries. Chapters on the federal decision making process are supplemented by evidence from the United Nations Relief and Rehabilitation Administration (UNRRA), the IRO, the Ontario Ministry of Education and forestry, mining and hydro industries. It uses a variety of methodologies including policy history, oral history, public opinion polling, gender, ethnicity and labour studies to investigate the implications of these decisions for Canadian society. It demonstrates that the 1947-1951 movement of DPs was initiated primarily under dual pressure from Canadians who had served abroad and industry leaders who had previously used POW labour to solve on going shortages in the bush. These decisions were strongly informed by both the crisis in Europe and Canadian assumptions about race, labour and citizenship. By examining the expectations Canadians had for the behaviour of its newest arrivals and future citizens this study highlights the foundations of Canadian citizenship in 1947: community participation, contribution to the development of the economy, and political loyalty to the nation.

Keywords: Displaced Persons
Canada
DP
immigration
refugee policy
Department of Labour
Advisor: Bothwell, Robert
"The Amusement World": Theatre as Social Practice in Eighteen-Nineties Toronto

This thesis places a selection of performances that took place in Toronto’s commercial theatres during the eighteen nineties in their historical context in order to consider determinants of meaning that influenced the social practice in one Canadian city - Toronto. These performances are selected to explore a range of performance activity across the decade and include: the debut performance by Canadian violinist Nora Clench at the Academy of Music in 1889; a fund-raising amateur “entertainment” The Marriage Dramas, performed for local adolescents at the Grand Opera House in 1892; The Second Mrs. Tanqueray, an example of the touring legitimate drama, performed by veteran acting couple the Kendals in 1894; another touring performance , in this instance a popular- theatre favorite, True Irish Hearts, by Dan McCarthy at the Toronto Opera House in 1893 and a rare example of Canadian playwriting from the decade, a performance of Catherine Nina Merritt’s United Empire Loyalist history play When George the Third was King in 1897. The analysis of all performances in this dissertation considers a range of determinants of meaning that Toronto audiences may have drawn upon when viewing a given performance and argues that the following constraints not only influenced the construction of a situated identity in Toronto but also suppressed domestic professional theatre production: a) a system of patronage that stigmatized the professional commercial theatre as frivolous or decadent; b) a utilitarian bias that was at odds with the post-materialist sensibilities of newer and more innovative forms of the late nineteenth-century drama; c) an economic and business practice that centralized production outside of the country to assure profit; and perhaps most significantly: d) a cultural hegemony that deemed Canadian drama to be immature and thus deterred works of aesthetic expression. This thesis is further informed by an understanding that history is written under the influence of the author’s own situated set of determinants and its goal in conducting an associative reading of Toronto’s nineties theatre practice is to locate theatre and performance history as part of a struggle among social, economic, cultural and political hierarchies.

Keywords: Theatre
Toronto
Eighteen-Nineties
Advisor: Plant, Richard
The Impossible Tempest: Giorgio Strehler or the Director as Interpreter

During his fifty-year career, the Italian director Giorgio Strehler (1921-1997) staged more plays by Shakespeare than by any other playwright, but only a few of his most recent and successful Shakespearean productions have received international critical attention, and The Tempest he directed in 1978 is among them. Thirty years before however, in 1948, he directed a first, completely different production of the same text. Starting from the theoretical assumption that a theatre performance, as object, exists only in the moment in which it is actually produced, that is, in its reception by the audience, this dissertation has a twofold purpose: to explore the different contexts in which the two productions directed by Strehler were staged, and to underline how, from the beginning of his career he developed a crucial attention for interpretative techniques culminating in the 1978 Tempest. Aside from being based on the same text and from being produced by the same ensemble, the Piccolo Teatro of Milan, though with two radically different acting and technical troupes, the two productions of The Tempest directed by Strehler enlighten the variety of dynamics – from historical, political, and cultural, to more specifically theatrical, technical, and dramaturgical – which interacted within him while he was working at the staging of the play, and emphasizes the centrality of the director in contemporary theatre. Finally, this dissertation examines how the pragmatic process of rehearsal might modify the director's theoretical approach to a text, and shows how the study of a performance consists not just in the quest for its meaning, but in the investigation of how the text is brought to the stage, to that coalescent point that, in order to materialize, demands active participation and involvement from both interpreters and spectators.

Keywords: Theater
Drama
Shakespeare
Tempest
Directing
Italian
Advisor: Astington, John H.
Investigation into the Role of CBL-B in Leukemogenesis and Migration

CBL proteins are E3 ubiquitin ligases and adaptor proteins. The mammalian homologs – CBL, CBL-B and CBL-3 show broad tissue expression; accordingly, the CBL proteins play roles in multiple cell types. We have investigated the function of the CBL-B protein in hematopoietic cells and fibroblasts. The causative agent of chronic myeloid leukemia (CML) is BCR-ABL. This oncogenic fusion down-modulates CBL-B protein levels, suggesting that CBL-B regulates either the development or progression of CML. To assess the involvement of CBL-B in CML, bone marrow transduction and transplantation (BMT) studies were performed. Recipients of BCR-ABL-infected CBL-B(-/-) cells succumbed to a CML-like myeloproliferative disease with a longer latency than the wild-type recipients. Peripheral blood white blood cell numbers were reduced, as were splenic weights. Yet despite the reduced leukemic burden, granulocyte numbers were amplified throughout the animals. As well, CBLB(-/-) bone marrow (BM) cells possessed defective BM homing capabilities. From these results we concluded that CBL-B negatively regulates granulopoiesis and that prolonged latency in our CBL-B(-/-) BMT animals was a function of perturbed homing.To develop an in vitro model to study CBL-B function we established mouse embryonic fibroblasts (MEFs) deficient in CBL-B expression. Transduction of the wild-type and CBL-B-deficient MEFs with BCR-ABL did not confer transformation; nevertheless, the role of CBL-B in fibroblasts was evaluated. The CBL-B(-/-) MEFs showed enhanced chemotactic migration toward serum in both Transwell migration and time-lapse video microscopy studies. The biochemical response to serum was extensively evaluated leading to the development of a model. We predict that CBL-B deficiency either: (a) augments GRB2-associated binding protein 2 (GAB2) phosphorylation leading to enhanced extracellular signal-regulated kinase (ERK) and protein kinase B (PKB / Akt) signaling, or (b) alleviates negative control of Vav3 resulting in stimulation of Rho effectors. In either case, our results reveal a negative regulatory role for CBL-B in fibroblast migration. The two studies detailed herein expand our knowledge of CBL-B function. They strongly suggest that CBL-B can modulate granulocyte proliferation and point toward a role for CBL-B in the motility of numerous cell types.

Keywords: cancer
myeloproliferative disease
BCR-ABL
CBL-B
fibroblasts
migration
chronic myeloid leukemia
bone marrow transplantation
Advisor: Barber, Dwayne
Meri Kahanee Sono (Listen to My Story): A (Step) Mother's Journey Of Healing and Renewal

Loyalty conflicts. Resistance. Anger. This thesis will take you along on my journey as a South Asian woman and the mother and stepmother of a cross-cultural stepfamily. Through the form of an arts-informed auto-ethnography I will illustrate how I underwent personal and spiritual transformation while (step) mothering four children. It is a story that “both cuts and heals” (Luciani, 2000, p. 39). In this work I show how mothering and stepmothering can “deteriorate into martyrdom if a mother gives her children and spouse the love and care she doesn’t feel that she herself is worthy of receiving” (Northrup, 2005, p. 13). I explore how the pressure to be a “good mother” and “good stepmother” left me feeling inadequate, resentful, doubtful of my abilities and neglectful of my own needs. Hope. Solace. Spirituality. Love. This story is also about healing and renewal and my process of recapturing a sense of self by returning to spirituality. By sinking into my life as a mother and stepmother and viewing my life circumstance as a “vehicle for waking up” (Chodron, 1991, p. 71), I cultivated a conscious state in which anger and resentment was replaced by awe and wonder. I strengthened my agency by directing nurturing and caregiving to myself, pursuing my creativity, and sharing childrearing more equitably with my partner. Mothering and stepmothering became sites of empowerment as I found joy in my relationship with myself, my children, and the community around me. This research provides an example of how meaningful knowledge production can occur in alternative forms to mainstream academic discourse. Arts-informed, auto-ethnographic research offers insights on human relationships and interactions in the world by fostering an epistemological shift for the researcher as well as the reader. As Sameshina and Knowles note (2008) this methodology is “transformational in process and possibilities” (108).

Keywords: mothering
south asian mothering
sprituality
transformative change
personal growth
family
Advisor: Sangha, Jasjit
Exploring Intersectionality, Unravelling Interlocking Oppression: Feminist Non-credit Learning Practices

The concepts of intersectionality and interlocking identities came out of needs raised by communities and then academics wrote about it. This dissertation examines these concepts and how these resonate with the ways that feminist educators conceptualize and facilitate non-credit learning processes with women. This research focuses on 10 differently-located feminist educators and the processes they lead that meet a range of learning goals. Specifically, this research examines the learning practices that these educators used to help women learners gain a consciousness around their identity and issues of power and oppression. I then discuss how these practices resonate with the theoretical frameworks of intersecting and interlocking oppressions. Anti-oppression, feminist informed research and feminist standpoint theories informed the research approach. The Critical Appreciative Process, which builds on the Appreciative Inquiry (AI) method, was used to explore what is working within feminist non-credit learning processes. In addition, two case studies were elaborated on in order to examine the learning practices that were particularly successful. The educators reflected on several barriers involved in bringing differently-located women together to explore and address the power dynamics associated with power and oppression. These included the defensiveness, denial and avoidance associated with acknowledging and addressing privilege. The educators also shared effective practices for addressing such barriers. Key practices included creating an environment for difficult conversations, working intergenerationally, using theoretical frameworks to deconstructing interpersonal dynamics occurring in the group and providing tools to draw on everyday experiences and challenge (inappropriate) behaviours. Additionally, specific activities for raising learners’ awareness of their own complex and multiple identities and how these identities are co-constructed through interactions with others were detailed. This study revealed the limitations of intersectionality and interlocking identities frameworks in praxis, as well as the ways in which an awareness of identity, difference and power creates an entry point for intersectional and interlocking awareness that aids feminist movements. This research makes a contribution to strengthening the praxis of feminist educators facilitating non-credit processes. Within feminist theorizing, this research also makes an important contribution in contextualizing intersectionality and interlocking identities frameworks within a range of feminist non-credit learning practices.

Keywords: Adult and Continuing Education
Popular Education
Non-Credit Learning
Non-Formal Learning
Praxis
Feminist Educators
Feminist Pedagogy
Consciousness Raising
Feminist Informed Research
Black Feminisms
Indigenous Feminisms
Feminist Anti-Oppression Anti-Racism Framework
Feminist Standpoint Theory
Privilege
Identity
Intersectionality
Interlocking Oppression
Anti-Oppression
Advisor: Bustow, Bonnie
Accommodating the Ethno-cultural Differences of Students: An Analysis of Ontario Community Colleges

This study relies on qualitative research: open-ended, semi-structured interviews were used to gain insight into the experiences of students of ethnically diverse backgrounds from three Greater Toronto Area (GTA) community colleges. Additional data were collected from college websites and meetings with college student services directors to gain a broader understanding of the context in which the ethnically diverse student is engaged. This research is guided by the psychosocial theories of student development of Chickering (1969), and Chickering & Reisser, (1993) including a brief overview of the cognitive-structural theory of student development; and the typology theory of student development. Student development theory provides insight into how life experiences shape one’s ability to learn and interact with others. An expert panel assisted with the refining of the interview questions and provided feedback on the overall study findings. In the interest of accountability, members of the expert panel were recruited based on their experience with issues around the diversity that exists within our GTA community colleges. Interviews were conducted with 25 students of ethnically diverse backgrounds to explore their overall college experience and their perceptions of the provision of student services at their college. The conclusions drawn from this study suggest that the colleges participating in the study have met the participants’ expectations in the areas of overall college experience and the services each provides. In addition, it was found that the colleges have had a positive impact on student experience resulting in success. The findings also indicate that these colleges have done little to facilitate quiet learning spaces and are not providing for the religious requirements of students. This study contributes to a better understanding of the challenges students from diverse backgrounds may face when seeking out services at their college and it offers recommendations to enhance these colleges’ efforts in this area along with recommendations for further research.

Keywords: GTA community college
ethnically diverse students
psychosocial theory
diversity
canadian colleges
pan-canadian
Advisor: Pascal, Charles