VictorJuiz/thesis huggingface dataset:
William of Ockham's Early Theory of Property Rights: Sources, Texts, and Contexts
Keywords: William of Ockham
John XXII
Bonagratia of Bergamo
Michael of Cesena
Francis of Marchia
Franciscan poverty
property rights
corporation theory

This dissertation examines William of Ockham's theory of property rights in the Opus nonaginta dierum (1332) in the context of the other major Michaelist texts of the period. A corollary of the project is to examine to what extent Ockham, a theologian with no formal training in law, was able to exploit the resources of Roman and canon law to justify his theory of property rights. The first chapter outlines general methodological concerns. The second chapter describes John XXII's theory of property rights as it can be found in his major bulls of the 1320s. The subsequent chapters adopt a thematic approach. Chapters three through five analyse in turn the concepts of ius, dominium, and usus, which are hierarchically related concepts in the Michaelist texts. Chapter three examines ius in traditional legal discourse in order to provide a framework for understanding how the Michaelists employed the term; both the issue of positive and natural rights and the interaction of divine, natural, and positive law are examined. Chapter four examines dominium, here primarily understood as proprietary lordship, as it is justified in divine, natural, and positive law; the Franciscan position on the origin of private property also becomes clear. The fifth chapter deals with the Franciscan argument that usus must be understood not only in a legal sense. Franciscan use, they argue, is a rightless and legally indefensible sort of use because it lacks a connection to ius. The sixth chapter explores how the Michaelists explained that one may justly use something that is consumed through use without ever holding property rights over it, while the seventh explores the Franciscan theory of corporate rights in the face of Innocent IV's and John XXII's arguments about the supposedly fictive personality of corporations. A concluding chapter and three appendices round out the dissertation. The first appendix illustrates how Michael of Cesena adapted Bonaventure's theory of a 'fourfold community of temporal things'. The second compares the structural interrelationship of the Michaelist texts. The final appendix tabulates Ockham's use of canon and Roman law with respect to the writings of the pope and the other Michaelists.
Diapirism on Venus and the Early Earth and The thermal effect of fluid flows in AECL's Tunnel Sealing Experiment
Keywords: Archean crustal diapirism
geophysical fluids
nuclear waste disposal
Archean geodynamics
Venusian mantle convection

Flow instabilities occur at all scales in planetary systems. In this thesis we examine three cases of such instabilities, on three very different length scales. In the first part, we test the idea that Archean granite-greenstone belts (GGBs) form by crustal diapirism, or Rayleigh-Taylor instabilities. GGBs are characterized by large granitic domes (50-100 km in diameter) embedded in narrow keel-shaped greenstones. They are ubiquitous in Archean (> 2.5 Ga) terrains, but rare thereafter. We performed finite element calculations for a visco-elastic, temperature-dependent, non-Newtonian crust under conditions appropriate for the Archean, which show that dense low-viscosity volcanics overlying a felsic basement will overturn diapirically in as little as 10 Ma, displacing as much as 60 % of the volcanics to the lower crust. This surprisingly fast overturn rate suggests that diapiric overturn dominated crustal tectonics in the hot conditions of the Early Earth, becoming less important as the Earth cooled. Moreover, the deposition of large volumes of wet basaltic volcanics to the lower crust may provide the source for the formation of the distinctly Archean granitic rocks which dominate Earth's oldest continents. The second part examines the origin of Venusian coronae, circular volcanic features unique to Venus. Coronae are thought to result from small instabilities (diapirs) from the core-mantle boundary, which are typical of stagnant-lid convection. However, most young coronae are located in a region surrounded by long-lived hotspots, typical of a more active style of mantle convection. Using analogue experiments in corn syrup heated from below, we show that the co-existence of diapirs and long-lived mantle plumes are a direct consequence of the catastrophic overturn of the cold Venusian lithosphere thought to have occurred ~ 700 Ma ago. In the last part we analyze the thermal effect of fluid flow through a full-scale experiment testing clay and concrete tunnel seals in a Deep Geological Repository for nuclear was finite element software, we were able to show that the formation of fissures in the heated chamber between the two seals effectively limited heat flow, and could explain the discrepancy between the predicted and measured temperatures.
Open Networking in Central America: The Case of the Mesoamerican People's Forum
Keywords: Global Justice Movement
Mesoamerican People's Forum
Central America
Globalization
Open Space
Collective Political Subjectivity

This dissertation considers the case of the Mesoamerican People’s Forum (MPF), a Central American ‘cousin’ of the World Social Forum, and manifestation of the Global Justice Movement. It argues that the MPF cannot be adequately understood as a transnational social movement or as an ‘open space.’ Rather, it is best understood as a political playing field on which the leaders of locally rooted social movements contested the future of the Central American left within an uncertain and changing political context. Based on extensive ethnographic field work and grounded analysis, it argues that well-placed actors within forum spaces can best be thought of as ‘mediators’ between state and society. The emergence of de facto federated governance structures in Central America, plus weak democratic institutions, have placed new pressures on mediators. Leaders within the Central American left find that they need to build up and/or maintain power bases to shield their positions within an uncertain political environment. They mobilize people to participate in transnational forum spaces because of the legitimating benefits, but shape networked flows within these spaces to limit the potential for networking to erode established positions. Thus I conclude that openness is neither the condition nor the objective of social forums, but rather a pawn strategically deployed or retracted in the course of networked interactions. The work advances thinking about the nature of collective political subjectivity in an era of transformationalist globalization. It also argues in favor of critical realist perspectives on collectivization in a post-development, globalizing world. Specifically, scholars can best advance an ‘epistemology of the south’ by promoting and protecting cognitive justice, which in turn can be achieved through the use of realist approaches that serve to uncover the practices of power at work within networked spaces.
Principle-based Implementation of Knowledge Building Communities
Keywords: innovation
knowledge building
principle-based
study groups

This thesis investigates issues and challenges surrounding the use of teacher study groups as a means of addressing the gap that must be closed between design principles and classroom practices in order to effectively implement an educational innovation. A multiple-case design was used to examine how teachers’ perceived understanding of the Knowledge Building Communities principles changed over time and affected their implementation of the Knowledge Building Communities model—a model that requires student engagement in the collaborative production of ideas that are continually improved by all participants. Knowledge Forum® is an on-line environment designed to support Knowledge Building. Data sources for this study include teacher interviews, transcripts of study group meetings, teachers’ ratings of their perceived understanding of Knowledge Building principles, teacher and student activity in Knowledge Forum, and student interviews. In total this study involved seven teachers and eleven study group meetings across three school sites. Based on work at a site already engaged in Knowledge Building a tentative proposition was developed: discussing Knowledge Building principles increases teachers’ perceived understanding of these principles and contributes to increasingly effective designs for implementing them. This proposition was tested and refined at two additional elementary public schools. Taken together the findings suggest the importance of and difficulties surrounding study groups focused on principle-based approaches to pedagogical change. In particular, the findings point to discussion and active engagement with the principles as a catalyst for change. A data analysis technique was developed to examine the discourse patterns of select episodes of study group meetings. The resulting pattern suggests the principles can frame a study groups’ work and set the groundwork for change through discussion of goals underlying the principles, stories relevant to their implementation, and commitment to ongoing experimentation to address obstacles. Detailed accounts of teacher difficulties and change form the basis of a descriptive model developed to convey how teachers address contextual concerns in their study groups, with elaboration of the types of interactions that help them move to deeper understanding of principles and to more successful implementations of the Knowledge Building Communities model.
Clerical Workers: Acquiring the Skills to Meet Tacit Process Expectations Within a Context of Work Undervaluation and Job Fragility
Keywords: clerical workers
relational skills

Since the late nineteenth century, clerical work has transformed from a small cluster of respected occupations dominated by men to a rapidly changing group of occupations 90 percent of which are held by women. Due to bureaucratization and the feminization of clerical work, clerical jobs are assumed to be routinized and simple, and clerical workers deemed easily replaceable. With further changes to the occupation caused by technology and globalization, clerical workers today have become increasingly vulnerable to unemployment, precarious employment and underemployment. In this research, an Ontario-wide survey with approximately 1200 respondents (including 120 clerical workers) and in-depth interviews with 23 Toronto clerical workers were combined to explore the employment situation of Ontario clerical workers. It is apparent that clerical workers are underemployed along all measured conventional dimensions of underemployment, including credential, performance and subjective as well as work permanence, salary levels and job opportunities. Relational practice is a largely unexamined aspect of clerical work that is often essentialized as a female trait and seldom recognized as skilled practice. In this dissertation, I argue that relational practice is critical to the successful performance of clerical roles and that relational practices are not innate but rather learned skills. I explore some ways in which clerical workers acquire these skills. I conclude by noting that recognizing and valuing relational skills will make the value of clerical workers more apparent to their employers, potentially reducing for clerical workers both their subjective sense of underemployment and their vulnerability to job loss.
A Mixed Methods Study of Class Size and Group Configuration in Online Graduate Course Discussions
Keywords: class size
group configuration
mixed methods study
graduate course discussions

Class size has long been recognized as a factor affecting achievement in face-to-face contexts. However, few studies have examined the effects of class size in online courses, or the effects of dividing an online class into smaller discussion groups. The current study examined the relationship between class size and the use of grouping strategies on note reading, note writing, and collaborative discussions in online graduate-level courses. This mixed-methods study analyzed tracking logs from 25 graduate-level online courses using Web Knowledge Forum (25 instructors and 341 students) and interviews from 10 instructors and 12 graduate students with diverse backgrounds. The quantitative and qualitative data analyses were designed to complement each other. Findings suggested 13 to 15 as an optimal class size and four to five as an ideal subgroup size. Not surprisingly, the results revealed that, as class size increased, the total notes that participants read increased significantly. However, as class size increased, the percentage of course notes that students read decreased significantly (i.e., students were reading a smaller proportion of the course notes). In larger classes, participants were more likely to experience information overload and students were more selective in the notes that they read. A significant positive correlation was found between class size and total notes written. Students’ note size and grade-level score were negatively correlated with class size. The data also suggest that the overload effects of large classes can be minimized by dividing students into small groups for discussion purposes. Interviewees felt that the use of small groups in large classes benefited their collaborative discussions. The preceding results underscore the importance of using small discussion groups when class sizes are large. The research concludes with a list of pedagogical recommendations and suggests new software features that may help enhance learning in online courses.
Conservation by Consensus: Reducing Uncertainty from Methodological Choices in Conservation-based Models
Keywords: statistical methods
conservation biology
endangered species
ensemble models

Modeling species of conservation concern, such as those that are rare, declining, or have a conservation designation (e.g. endangered or threatened), remains an activity filled with uncertainty. Species that are of conservation concern often are found infrequently, in small sample sizes and spatially fragmented distributions, thereby making accurate enumeration difficult and traditional statistical approaches often invalid. For example, there are numerous debates in the ecological literature regarding methodological choices in conservation-based models, such as how to measure functional traits to account for ecosystem function, the impact of including rare species in biological assessments and whether species-specific dispersal can be measured using distance based functions. This thesis attempts to address issues in methodological choices in conservation-based models in two ways. In the first section of the thesis, the impacts of methodological choices on conservation-based models are examined across a broad selection of available approaches, from: measuring functional diversity; to conducting bio-assessments in community ecology; to assessing dispersal in metapopulation analyses. It is the goal of this section to establish the potential for methodological choices to impact conservation-based models, regardless of the scale, study-system or species involved. In the second section of this thesis, the use of consensus methods is developed as a potential tool for reducing uncertainty with methodological choices in conservation-based models. Two separate applications of consensus methods are highlighted, including how consensus methods can reduce uncertainty from choosing a modeling type or to identify when methodological choices may be a problem.
Fetal Exposure to Antidiabetic Drugs: The Role of the Placenta
Keywords: gestational diabetes
placental transport
insulin glargine
glyburide

Gestational diabetes, a common medical complication in pregnancy, may lead to severe fetal consequences if left untreated. A major concern with the use of antidiabetic drugs in pregnancy is the potential for placental transfer and fetal toxicity. The presence of endocytic pathways and several ABC transporter proteins has been demonstrated in the human placenta and are believed to play an important role in determining fetal exposure to drugs used in pregnancy. The objective of this thesis is to investigate the safety and transfer of the oral hypoglycemic agent, glyburide, and the new long acting insulin analog, insulin glargine, across the human placenta. The oral antidiabetic, glyburide, has been shown to be actively effluxed across the placenta in the fetal to maternal direction. The transport of glyburide in the presence of a breast cancer resistance protein (BCRP) inhibitor was investigated in the dually perfused human placenta model. The results of the perfusion studies indicate that BCRP plays a role in protecting the fetus from the accumulation of glyburide. Subsequently, cellular studies were carried out to determine the effect of the naturally occurring single nucleotide polymorphism within the coding region of BCRP (C421A/Q141K) on glyburide transport. Results suggest that glyburide transport may be reduced in the presence of the Q141K polymorphism. While insulin remains as the gold standard, the potential for maternal hypoglycemia with insulin injection has resulted in the development of insulin analogs. Insulin glargine, a human insulin analog, has a long half life with no pronounced peak when compared to currently used NPH insulin. Human placental perfusion experiments examining the extent and rate of transfer of insulin glargine across the placenta demonstrated that, at therapeutic concentrations, insulin glargine does not cross the placenta to a measurable extent. To further determine the fetal safety of insulin glargine therapy compared with NPH insulin, a systematic review and meta-analysis were performed. No evidence was identified for increased adverse fetal outcomes with the use of insulin glargine during pregnancy. Overall, the results of this research serve to provide improved treatment options for women with diabetes in pregnancy.
Characterization of BMP Signalling Pathways Mediated by the BMP Type II Receptor, BMPRII, Regulating Neuronal Morphogenesis
Keywords: cell biology
biochemistry
molecular biology
neuroscience

Bone Morphogenetic Proteins (BMPs) regulate numerous biological processes including neuronal development. The growth and morphological differentiation of dendrites are critical events in the establishment of proper neuronal connectivity and neural function. One extrinsic factor, BMP7, has been shown to specifically affect dendritic morphogenesis. Here, I describe the elucidation of novel signalling mechanisms involving the BMP type II receptor, BMPRII, during BMP7-dependent dendrite formation. The carboxy-terminal tail of BMPRII binds regulators of the cytoskeleton, and acts as a scaffold to localize and coordinate cytoskeletal remodelling. BMP7-induced localized remodelling of the actin and microtubule cytoskeleton mediated by BMPRII-bound LIMK1 and JNK, contributes to BMP7-dependent dendrite formation. In addition, in efforts to understand how BMP-induced activation of LIMK1 and JNK is regulated, upstream regulators, Rho GTPase, Cdc42, a Rho GTPase effector, PAK1, and a guanine exchange factor (GEF), αPIX, were identified as novel interacting partners of the BMP type I receptor, ALK2. Thus, elucidation of the molecular mechanisms governing BMP7-dependent dendrite formation, defines the extracellular cue, BMP7, as a critical regulator of cytoskeletal dynamics in neurons.
Stream Computing on FPGAs
Keywords: Field Programmable Gate Array
FPGA
Streaming
Behavioral synthesis
Behavioural synthesis
Data parallelism
Task parallelism
Replication
Throughput
Scalability
C2H
High-level synthesis
Reduction
Parallel reduction
FIFO
Strength reduction

Field Programmable Gate Arrays (FPGAs) are programmable logic devices used for the implementation of a wide range of digital systems. In recent years, there has been an increasing interest in design methodologies that allow high-level design descriptions to be automatically implemented in FPGAs. This thesis describes the design and implementation of a novel compilation flow that implements circuits in FPGAs from a streaming programming language. The streaming language supported is called FPGA Brook, and is based on the existing Brook and GPU Brook languages, which target streaming multiprocessors and graphics processing units (GPUs), respectively. A streaming language is suitable for targeting FPGAs because it allows system designers to express applications in a way that exposes parallelism, which can then be exploited through parallel hardware implementation. FPGA Brook supports replication, which allows the system designer to trade-off area for performance, by specifying the parts of an application that should be implemented as multiple hardware units operating in parallel, to achieve desired application throughput. Hardware units are interconnected through FIFO buffers, which effectively utilize the small memory modules available in FPGAs. The FPGA Brook design flow uses a source-to-source compiler, and combines it with a commercial behavioural synthesis tool to generate hardware. The source-to-source compiler was developed as a part of this thesis and includes novel algorithms for implementation of complex reductions in FPGAs. The design flow is fully automated and presents a user-interface similar to traditional software compilers. A suite of benchmark applications was developed in FPGA Brook and implemented using our design flow. Experimental results show that applications implemented using our flow achieve much higher throughput than the Nios II soft processor implemented in the same FPGA device. Comparison to the commercial C2H compiler from Altera shows that while simple applications can be effectively implemented using the C2H compiler, complex applications achieve significantly better throughput when implemented by our system. Performance of many applications implemented using our design flow would scale further if a larger FPGA device were used. The thesis demonstrates that using an automated design flow to implement streaming applications in FPGAs is a promising methodology.