This dissertation examines the processes by which multiple positioned actors in Participatory Action Research or Community-Based Participatory Research (PAR/CBPR) understand, reproduce, and contest systems of power and oppression in the context of their relationships and collaborations to support community-driven change efforts. The first chapter serves as a preface by reviewing relevant literature on participatory action research and power. The rest of the dissertation consists of three empirical papers. The first of these papers examined the extent to which scholars interrogate systems of power and oppression in (PAR/CBPR) to advance social justice. Scoping review methodology was employed to systematically review scholarly literature written in English and published between 2010 and 2020 across 5 databases. Thematic analysis and data charting yielded six scholarly articles using critical self-reflexive qualitative methodologies to explore manifestations of power within the partnership. Articles describe researchers employing individual critical reflections to confront individual assumptions, modify individual collaboration practices, and identify multilevel structures restraining participatory action approaches to research. The second paper explored the perceptions of researchers and community stakeholders regarding key processes questioning and addressing power issues within the (PAR/CBPR) collaborations. Individual in-depth semi-structured interviews (n=23) were conducted with social work researchers (n=13) and community stakeholders (n=10) with current or prior experience engaging in (PAR/CBPR) to examine the ways they define, negotiate, and address power differentials and oppression within their collaborations. Key emerging themes and discourses merged into a conceptual model illustrated with a metaphor of a river to highlight key social sites, paradigms of knowledge production, and the degree to which it aligns with the pursuit of social justice. Downstream strategies that sustain colonial forms of knowledge production included othering, disembodiment, and extraction. Conversely, upstream approaches underscored the centrality of redefining social relationships and ethical commitments within PAR/CBPR collaborations through the cultivation of unsettling counterspaces, counternarratives, and dialogical brave spaces. Finally, the third paper explored researchers and community stakeholders’ conceptualization and understanding of social justice as well as recommendations for social work research, practice, and policy to contest power and oppression in the context of PAR/CBPR. A second wave of individual in-depth semi-structured interviews with social work researchers (n=11) and community stakeholders (n=11) with current or prior experience engaging in PAR/CBPR were conducted and analyzed using thematic analysis. Findings illustrated converging and diverging understandings of social justice, in particular, community stakeholders emphasized an understanding of social justice interdependent of systemic transformations through dialogical processes among stakeholders, researchers, and social institutions. PAR/CBPR was described as a facilitating factor of social justice by fostering counterspaces and counternarratives. Additionally, PAR/CBPR was defined as a factor limiting the pursuit of social justice and deeply entrenched with tenure-track promotion and funding mechanisms perpetuating top-down configurations of power. Together and independently these papers further our understanding of the ways in which structural oppression and power in (PAR/CBPR) can be addressed. Research findings from all three studies highlighted participatory action research is not exempt from power hierarchies, and that multilevel strategies promoting counterspaces, counternarratives, and institutional changes are essential when redressing, negotiating, and contesting power and oppression. Findings inform best practices for the development of PAR/CBPR collaborations embodying ethical relationality across social work research, practice, education, and policy. Future studies should consider the use of longitudinal and critically in-depth dialogical approaches between multiple positioned actors in PAR/CBPR when defining social justice, PAR/CBPR, and power. / 2028-04-30

The political economic pressures of development contribute to unsustainable environmental practices in developing countries, and marginalize civil society participation. This dissertation looks at the following countries where policymakers are faced with strong incentives to foster rapid economic growth. In Jamaica, the bauxite industry demands mining rights in sensitive mountainous ecosystems. In Mexico, the tourist industry demands access to construct in vulnerable coastal environments in the southeast. In inland Mexico, unregulated agriculture threatens ecosystems in the Yucatán Peninsula. Finally, tourist and energy industries in Egypt demand access for infrastructure in sensitive ecosystems in the Red Sea region. In all of the cases, the preferences of these sectors threaten to displace local communities, while creating unsustainable pressures on the environment. At the same time, the projected revenues from these sectors justify continued environmental exploitation. In response, transnational networks of environmental advocates and epistemic communities mobilized throughout the 1990s, lobbying the Global Environment Facility for conservationist projects in each country, and then lobbying governments to effectively implement the projects. This research finds that three conditions were necessary for transnational networks to influence policies associated with project implementation. First, networks must generate an internal scientific agreement on the dimensions of the environmental problem. By doing so, they can delegitimate competing arguments, strengthening their own claims. Second, networks must build social ties with policymakers in powerful agencies. Social ties increase the likelihood that policymakers will adopt the norms of the network. Third, networks must reframe the discourse on environmental management. At present, policymakers and industry argue that environmental management should be assessed by its contribution to economic development, validating only those policies that lead to sustained revenue generation. By reframing environmental management as an issue impacting the well-being of domestic populations, networks can argue for the greater participation of actors marginalized by the dominance of privileged productive sectors in resource management. Moreover, by linking sustainable resource use to the interests of domestic populations, networks can generate political capital to oppose the most unsustainable environmental practices. This research thus builds on the epistemic communities approach by highlighting the importance of democracy in knowledge building and environmental governance.

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This study investigates verb-final morphemes in Southern Nambikwara — a polysynthetic language spoken in the Mato Grosso region of southwestern Brazil. The verb-final morphemes -wa2 and -ɾa2/-la2 have previously been described as denoting an aspect distinction between imperfectivity and perfectivity (da Silva 2021; B. Kroeker 1982; M. Kroeker 2001; Lowe 1999). However, upon closer examination, this description appears flawed. By revisiting the data found in the previous literature as well as analyzing new first-hand data and the responses to a questionnaire, this study aims to describe the function and meaning of -wa2 and -ɾa2/-la2 with a focus on patterns of co-distribution with other verbal categories. The results suggest that -wa2 and -ɾa2/-la2 are markers of subjectivity and non-subjectivity, respectively. The present definition of subjectivity is based on Du Bois (2007) and Nuyts (2001), who emphasize that the distinctive factor between these categories is whether knowledge or evidence, and by extension the conclusion drawn from them, is exclusive to the speaker (or the speech act participants) or shared by a larger group. In addition, the shared or exclusive responsibility for an utterance as well as its sequential context are also of importance to the marking of subjectivity. Conclusively, the distribution of -wa2 and -ɾa2/-la2 varies with many grammatical categories, such as tense, person, mood/aspect, engagement, and polarity. The subjectivity marker -wa2 encodes exclusive knowledge and epistemic responsibility, while the non-subjectivity marker -ɾa2/-la2 denotes its counterpart, shared knowledge and shared epistemic responsibility.

This research is a practitioner inquiry into change in concepts in contexts of task based discourse in teacher education classrooms. The particular concepts selected for study are epistemic beliefs about knowledge in history. A hypothesis that there is a relationship between a perception of agency in task based discourse and change in concepts is proposed for research on the basis of a review of Kuhn's arguments for paradigm change and those of others on the problems of convergence of meaning between paradigms.1 Four of five quasi experimental studies conducted find tentative support for the alternative hypothesis and demonstrate how the relationship could be tested in the field. Change in epistemic beliefs from pre-test to post-test is significant in both groups, Control and Experimental, and consistently more and better change with moderate effect sizes is seen in the Experimental groups. A matched pedagogical method, experience of a range of suitable examples, Skemp (1971) was provided to both Control and Experimental groups and this is found to be effective in developing beliefs. The experimental construct, a perception of agency in task based discourse was enhanced in Experimental groups alone, which is used to explain the difference in change. A rubric, the Categories of Beliefs about Knowledge in History, CBKH, is developed and employed to examine responses to open ended questions. Likert Scales are also used and conclusions are drawn with a final quantitative analysis of data. Excerpts from a focus group discussion illustrate the process.

The thesis is focused on possible applications of the epistemic logic in the field of artificial intelligence studies. The first chapter deals with the origins and basic epistemic logic systems (the systems of J. Hintikka and M.Bezhanishvili). The second chapter presents examples of application of the epistemic logic methods in the artificial intelligence studies, and outlines problems and perspectives of said applications in the future. / Работа посвящена исследованию возможностей применения средств эпистемической логики в исследованиях искусственного интеллекта. В первой главе рассматриваются истоки и основные системы эпистемической логики (системы Я. Хинтикки и М. Н. Бежанишвили). Вторая глава предоставляет примеры применения средств эпистемической логики в исследованиях искусственного интеллекта, а также намечает проблемы и перспективы подобного применения в будущем.

Safety and risk assessment are key priorities for nuclear power plants. Probabilistic risk assessment (PRA) is a method for quantitative evaluation of accident risk, in particular severe nuclear core damage and the associated release of radioactive materials into the environment. The reliability and certainty of PRA have at times been questioned, especially when real-world observations have indicated that the frequency of nuclear accidents is higher than the probabilities predicted by PRA. This thesis provides a philosophical review of the epistemic uncertainties in PRA, using the Fukushima Daiichi accident of March 2011 as a case study. The thesis provides an overview of the PRA model structure, its key elements, and possible sources of uncertainty, in an attempt to understand the deviation between the real frequency of nuclear core-melt accidents and the probabilities predicted by PRA.The analyses in this thesis address several sources of epistemic uncertainty in PRA. Analyses of the PRA approach reveal the difficulty involved in covering all possible initiating events, all component and system failures, as well as their possible combinations in the risk evaluations. This difficulty represents the source of a characteristic epistemic uncertainty, referred to as completeness uncertainty. Analyses from the case study (the Fukushima Daiichi accident) illustrate this difficulty, as the PRA failed to identify a combined earthquake and tsunami, with the resultant flooding and consequent power failure and total blackout, as an initiating causal event in its logic structure.The analyses further demonstrate how insufficient experience and knowledge, as well as a lack of empirical data, lead to incorrect assumptions, which are used by the model as input parameters to estimate the probabilities of accidents. With limited availability of input data, decision-makers rely upon the subjective judgements and individual experiences of experts, which adds a further source of epistemic uncertainty to the PRA, usually referred to as input parameter uncertainty. As a typical example from the case study, the Fukushima Daiichi accident revealed that the PRA had underestimated the height of a possible tsunami. Consequently, the risk mitigation systems (e.g. the barrier seawalls) built to protect the power plant were inadequate due to incorrect input data.Poor assumptions may also result in improper modeling of failure modes and sequences in the PRA logic structure, which makes room for an additional source of epistemic uncertainty referred to as model uncertainty. For instance, the Fukushima Daiichi accident indicated insufficient backup of the power supply, because the possibility of simultaneous failure of several emergency diesel generators was assumed to be negligibly small. However, that was exactly what happened when 12 out of the 13 generators failed at the same time as a result of flooding.Furthermore, the analyses highlight the difficulty of modeling the human interventions and actions, in particular during the course of unexpected accidents, taking into account the physiological and psychological effects on the cognitive performance of humans, which result in uncertain operator interventions. This represents an additional source of epistemic uncertainty, usually referred to as uncertainty in modeling human interventions. As a result, there may be an increase in the probability of human error, characterized by a delay in making a diagnosis, formulating a response and taking action. Even this statement confirms the complexity of modelling human errors. In the case of the Fukushima Daiichi accident, lack ofvsufficient instructions for dealing with this "unexpected" accident made the coordination of operators' interventions almost impossible.Given the existence of all these sources of epistemic uncertainty, it would be reasonable to expect such a detected deviation between the real frequency of nuclear core-melt accidents and the probabilities predicted by PRA.It is, however, important to highlight that the occurrence of the Fukushima Daiichi accident could lie within the uncertainty distribution that the PRA model predicted prior to the accident. Hence, from the probabilistic point of view, the occurrence of a single unexpected accident should be interpreted with care, especially in political and commercial debates. Despite the limitations that have been highlighted in this thesis, the model still can provide valuable insights for systematic examination of safety systems, risk mitigation approaches, and strategic plans aimed at protecting the nuclear power plants against failures. Nevertheless, the PRA model does have development potentials, which deserves serious attention. The validity of calculated frequencies in PRA is restricted to the parameter under study. This validity can be improved by adding further relevant scenarios to the PRA, improving the screening approaches and collecting more input data through better collaboration between nuclear power plants world-wide. Lessons learned from the Fukushima Daiichi accident have initiated further studies aimed at covering additional scenarios. In subsequent IAEA safety report series, external hazards in multi-unit nuclear power plants have been considered. Such an action shows that PRA is a dynamic approach that needs continuous improvement toward better reliability.

Transitional care represents a critical juncture in the continuing care of patients with chronic conditions, particularly for adolescent patients. It also represents a significant point of failure in that process for adolescents, with many patients experiencing difficulties during the transition between adolescent and adult medicine that lead to negative long-term impact on health and wellbeing. This thesis aims at addressing adolescent transitional care processes and its obstacles through a broad medical humanities inquiry in a multidisciplinary dialogue between philosophy, social sciences, and medicine. The social, anthropological, and medical concepts of adolescence and autonomy were derived from a literature review and used to identify and philosophically analyze obstacles to adolescent transitional care. Studies were used to illuminate those obstacles. For a first person-perspective analysis, an autoethnography was developed to provide patient testimony, towards improving the reflection on transitional care. This analysis tested the alignment of the author’s experiences in interacting with a healthcare transition as part of the patient population with those recorded in the literature. This study has found barriers and facilitators concerning autonomy and communication at many levels and among many parties involved in the transition, such as patients, caregivers, healthcare providers, and healthcare systems operations, particularly regarding insurance management. This study recommends a focused coordination of primary care and/or transitional care specialists with the participation of adolescent patients’ voices and testimony to develop and manage challenges to autonomy in transitional care.

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