VictorJuiz/thesis huggingface dataset:
Considerations of Identity in Teachers' Attitudes toward Teaching Controversial Issues under Conditions of Globalization: A Critical Democratic Perspective from Canada
Keywords: Teaching Controversial Issues
Canada
Critical Democratic Global Citizenship

Controversy, as a vital principle of democracy, plays a central role in education for critical democratic global citizenship. Controversial issues, however, raise pedagogical challenges for teachers in that they are not only explicitly political, but also potentially threatening to the reproduction of status quo ideals and embedded national narratives – themselves keystones of citizenship education. The findings from this dissertation study report survey data on teachers’ attitudes toward teaching controversial issues from 202 Canadian teachers, as well as findings from interviews conducted with 16 Alberta teachers about how their multiple identities, and those of their students, intersect with their attitudes toward teaching controversial issues. The findings are discussed against indicators of critical democratic global citizenship education (CDGCE) which I advance in the thesis following from my investigation into the relationship between critical theory of a) democracy, b) globalization, and c) education. I engage the findings through the lens of critique and possibility and the reproduction and interruption of hegemonic discourse. Read through this lens, I found that hegemonic discourses of neutrality and universalism are being both reproduced and interrupted in complex ways that do affirm, but mostly refute, the promise of education for deepening democracy under conditions of globalization. Discourses of neutrality and universalism are being reproduced through insidious practices that affirm difference-blind and blank slate ideals and these need responding to. These have implications for how students in Canadian classrooms may be being prepared for critical democratic global citizenship education. Despite the misguided emphasis on the danger of teachers’ expressing extreme views in dominant discourses of education that question the place of controversial issues in school, I argue that the greater threat to deepening democracy is not teachers who express extreme views; it is curriculum and teachers who do not question familiar ones. In turn, I call for critical discursive and reflexive practices for teaching and learning with controversial issues that foreground identity, difference, and feelings as explicit material for learning. Finally, I delineate specific recommendations that are crucial responses for realizing the promise of education for deepening democracy under conditions of globalization.
Urban Greenspace, Civil Society and Science: The Creation and Management of the Rouge Park, Ontario, Canada.
Keywords: Rouge Park
civil society
Ontario
Canada
greenspace
conservation
Scarborough
Toronto
resource management
geography
GTA
Greater Toronto Area
Rouge River
national park
watershed
park
urban
livability
growth
science
nature
society
Parks Canada
Little Rouge Creek

Earth is becoming more urban. As the human population continues the current trend of migrating towards urbanized regions, the pressures to develop urban greenspaces will inevitably increase. Greenspaces play a critical role in urban livability for both human and non-human beings. This research examines the creation and management of the Rouge Park (Ontario, Canada), which is a large greenspace approximately 46 km2 located in the eastern portion of the Greater Toronto Area. The output of this research consists of three parts. The first provides an identification of the relevant actors, and a detailed chronology of the social and political events that led to the establishment of the Rouge Park. The second section explores the competing narratives of science, conservation, and development that were fundamental in shaping the protected area that we see today. The final section examines the governance and administration of the Rouge Park, and investigates the activities and involvement of civil society actors working in its day-to-day management. Using qualitative methods, I demonstrate that science and scientific expertise can be powerful tools of legitimization for civil society actors. In particular, I examine the benefits and pitfalls of placing ecologically-based rationalizations at the forefront of conservation policy deliberations. Furthermore, I show that despite shortcomings in the governance structure of the park, the current arrangement has provided civil society actors with increased opportunities to shape their community. My results show that a locally grounded nature conservation movement can serve as a powerful motivating force for citizens to enact long-term environmental planning initiatives.
Biliteracy Development in Chinese and English: The Roles of Phonological Awareness, Morphological Awareness, and Orthographic Processing in Word-level Reading and Vocabulary Acquisition
Keywords: reading development
biliteracy development
phonological awareness
morphological awareness
orthographic processing
Chinese reading
English reading
word reading
vocabulary

This thesis examined the role of metalinguistic skills in concurrent and subsequent word-level reading and oral vocabulary among Chinese-English bilingual children who learned Chinese as their heritage language and English as their societal language. While previous studies on biliteracy development among this group of children have mostly focused on one of the two languages, this thesis gave equal emphasis to both languages. The research had two general purposes: 1) to investigate the role of phonological awareness, morphological awareness and orthographic processing in predicting word-level reading and oral vocabulary in Chinese and English concurrently and longitudinally; and 2) to examine the cross-linguistic role of phonological and morphological awareness to word-level reading and vocabulary, concurrently and longitudinally, between Chinese and English. These goals were explored through two interrelated studies, using path analyses. The participants included 91 Chinese-English bilingual children, recruited from kindergarten and Grade 1 Chinese heritage language classes in Canada. They were tested twice, one year apart, on a battery of cognitive and literacy measures in Chinese and English. Findings of Study 1 on within-language relationships indicated that, for word-level reading, all three metalinguistic skills were independent concurrent predictors in English, whereas only morphological awareness was predictive in Chinese. For oral vocabulary, morphological awareness was the only concurrent predictor in both languages. The longitudinal contributions of these metalinguistic skills were mostly mediated through the auto-regressors of the literacy outcomes. Findings of Study 2 on between-language relationships demonstrated that Chinese phonological awareness directly contributed to concurrent and subsequent English word reading beyond the effect of concurrent English phonological awareness. Yet, Chinese morphological awareness indirectly predicted concurrent and subsequent English oral vocabulary through concurrent English morphological awareness. Similarly, English morphological awareness only indirectly predicted concurrent and subsequent Chinese oral vocabulary. These findings suggest that different metalinguistic skills are required for literacy development in Chinese and English. Moreover, metalinguistic skills transfer to literacy, even across two typologically distant languages, but the transfer patterns of phonological and morphological awareness to different literacy skills vary considerably. These results are discussed in light of current reading and transfer models as well as linguistic contexts of biliteracy acquisition.
Canada's Outstanding Principals: A Mixed-Methods Investigation of Leadership Development, Principal Efficacy, and Transformational Leadership
Keywords: Leadership Development
Principal Efficacy
Transformational Leadership
Mixed-Methods

This dissertation describes how Canada’s Outstanding Principals (COP) processes (i.e., engaging in the COP program, receiving COP recognition, continuing participation with COPA, engaging in technology-based networking, and navigating nomination process) enhanced the leadership capacities of COP recipients, and how COP, as a leadership development program, strengthened the relationship between transformational leadership and principal efficacy. An exploratory analysis of collective principal efficacy was also presented. Over and above an existing skill set, well-designed leadership development programs require a multi-year commitment integrating leadership wisdom from education and non-education sectors. When core transformational practices were combined, the COP processes of engaging in the COP program, receiving COP recognition, and continuing participation with COPA were most influential, while engaging in technology-based networking and navigating the nomination process were least influential. COP met the six leadership development program elements identified in the literature review as being foundational to a well-designed leadership development program. All six elements were necessary to enhance principal leadership capacity. When evidence relating to influential leadership development experiences and elements of well-designed leadership development programs were combined, purposeful, reciprocal, and iterative peer networking appeared to be the most influential leadership development program element. Principal efficacy was identified as a prerequisite for transformational leadership with the core transformational leadership practice of developing people driving the other core transformational leadership practices. Overall, COP processes moderately improved COP recipient ability to demonstrate core transformational leadership practices. The concepts of transformational leadership and principal efficacy, and their impact on student achievement, are demonstrated as important in the research literature. This dissertation contributed to the research literature by applying these concepts to a leadership development program, establishing that developing leaders with abilities as transformational leaders, and tapping into principal efficacy, were insightful elements of leadership development. Further research was suggested to consolidate understanding of the collective principal efficacy concept, and how to foster collective principal efficacy when developing a network of principals with high principal efficacy. Recommendations for leaders, program developers, and policymakers are made.
John of Freiburg and the Usury Prohibition in the Late Middle Ages: A Study in the Popularization of Medieval Canon Law
Keywords: usury
canon law
economic history
theology
Roman law
philosophy
church history
german history

In this dissertation I provide an edition of the treatise on usury (De usuris, bk. 2, tit. 7) contained in the Dominican friar John of Freiburg’s (d. 1314) Summa confessorum (ca. 1298) – a comprehensive encyclopedia of pastoral care that John wrote for the benefit of his fellow friar preachers and all others charged with the cure of souls. The edition is prefaced by a detailed biography of John of Freiburg, an account of the genesis of the Summa confessorum that places the work in the context of John’s other literary productions, a commentary on the contents of the treatise on usury, and a study of the influence of John’s treatise on subsequent confessors’ manuals up to the end of the fourteenth century with a special concentration on the history of the Summa confessorum on usury in England. Based on an analysis of the social function of confessors’ manuals and the reception history of John’s treatise on usury, I contend that the Summa confessorum offers us a window into what many medieval men and women of all social classes in widespread areas of Europe might have known about the medieval Church’s prohibition of taking interest in a loan. As a prominent vehicle for the popularization of medieval canon law, then, the Summa confessorum occupies a significant place in the intellectual and social history of the Late Middle Ages. Finally, I argue that John’s choices in crafting his treatise on usury were ultimately influenced to a significant extent by the clash of economic interests between the old landed aristocracy and the rising burgher class in Freiburg, where John wrote the Summa confessorum and served as lector of the Dominican convent for over thirty years.
A Molecular-level Investigation of the Interactions between Organofluorine Compounds and Soil Organic Matter using Nuclear Magnetic Resonance Spectroscopy
Keywords: Xenobiotic Interactions with Soil Organic Matter
Environmental Nuclear Magnetic Resonance

In this dissertation, the intermolecular interactions between soil organic matter (SOM) and organofluorine compounds have been studied at the molecular-level using Nuclear Magnetic Resonance (NMR) spectroscopy. NMR probes the local magnetic environment surrounding atomic nuclei, and is uniquely capable as an analytical tool to probe molecular environments in complex disordered materials, such as soils. Several NMR techniques were employed in this work, including Pulse Field Gradient (PFG)-NMR based diffusion measurements, solid-state cross-polarization (CP), saturation transfer difference (STD) spectroscopy, and reverse-heteronuclear saturation transfer difference (RHSTD) spectroscopy. Using organofluorine compounds as molecular probes, xenobiotic interactions with SOM were studied. Using 1H{19F} RHSTD, the interaction sites in humic acid for organofluorine compounds were identified by direct molecular-level methods. Protein and lignin were identified as major binding sites, with different preferences exhibited for these sites by dissimilar organofluorine compounds: aromatic organofluorine compounds display varied preference for aromatic humic acid sites while perfluorooctanoic acid exhibits near total selectivity for protein-derived binding sites. The mechanisms underlying these preferences were probed in the solution state. Using crucial knowledge from the humic acid studies, a detailed molecular-level investigation of xenobiotic interactions in an intact and unmodified whole soil was made possible. A direct and in situ elucidation of the components in soil organic matter that interact with small organofluorine xenobiotic molecules has been presented, allowing, for the first time, resolution of multiple interactions occurring for xenobiotics simultaneously at different sites within a whole soil.
Gene Localization and Transcriptional Dynamics in the Optimization of Transgene Expression
Keywords: Nuclear organization
Retroviral Vector
Transcriptional Pulsing
Insulator
β-globin LCR
Transgene Silencing
Gene therapy
Live cell imaging
Embryonic stem cells
Gene expression

Gene transfer techniques such as retroviral transduction have many applications such as cell marking, cell reprogramming, and therapeutics. Transgene expression, however, is often variable and maintaining long-term expression is problematic in progenitor cell types. To better control transgene expression, research has focused on the optimized use of cis-regulatory elements, such as promoters, enhancers and insulators. In addition to controlling gene expression, these regulatory elements modulate the nuclear organization of the transgene. The integration site also exerts significant effects on steady state and temporal transgene expression via the neighbouring chromatin environment. The first part of this thesis describes the co-operation of modified β-globin intronic elements in providing high-level expression and favorable nuclear localization. I demonstrate that these elements are compatible with efficient lentivirus transduction for globin gene therapy purposes. In the second chapter, I examine high-expressing EGFP retroviral transgenes and show that such steady state expression may exhibit rapid transcriptional fluctuations, which is modulated by different transcriptional dynamics at different integration sites. Finally, in the last chapter, I evaluate the use of a 3’D4Z4 insulator element in maintaining long-term EGFP transgene expression in ES cells, and discover integration-site specific temporal dynamics in retroviral vector expression. Overall, my results demonstrate that using multiple regulatory elements and insulating these elements from different types of genomic loci optimize transgene expression and dynamics in progenitor cells.
Porphyrin-based Agents and Their Applications in Cancer Imaging and Therapy
Keywords: Cancer
Porphyrins
Optical Imaging
PET imaging
Photodynamic Therapy
Protease targeting
Folate targeting
Nanoparticles

Porphyrins represent one of the oldest, most widely studied chemical structures, both in nature and in biomedical applications. Due to their tumor avidity and favorable photophysical properties, such as long wavelength absorption and emission, easy derivatization, high singlet oxygen quantum yield and low in vivo toxicity, porphyrins have found particular success for photodynamic therapy and fluorescence imaging of cancer. Additionally, they are excellent metal chelators, forming highly stable metallo-complexes, making porphyrins an efficient delivery vehicle for radioisotopes. Thus, there is great potential in the applications of these multi-modal porphyrin-based agents for cancer imaging and therapy. I have investigated the characteristics of various porphyrin-based probes and their potential application in different clinically relevant models. Here, I will discuss three types of porphyrin-based agents: 1) photodynamic molecular beacons (PPMMPB), 2) targeted peptide porphyrins (PPF) and 3) porphyrin-lipid nanovesicles, porphysomes. I will demonstrate that all of these porphyrin-based agents have potential clinical applications in various fields of cancer imaging and therapy. Although these three agents differ greatly, they all aim to increase the signal-to-background ratio of tumor to healthy tissue uptake of porphyrins, thereby increasing our ability to detect tumor tissue and better preserve healthy tissue during therapy.
Motivating Teachers’ Commitment to Change by Transformational School Leadership in Urban Upper Secondary Schools of Shenyang City, China
Keywords: Transformational School Leadership
Teachers' Commitment to Change
Shenyang City

This multi-methods research project studies the main leadership practices from the perspectives of teachers in the recent process of curriculum reform and the extent to which these leadership practices motivated their commitment to change. It also investigates the effects of organizational and teachers’ factors on their perceptions of these transformational school leadership practices in Shenyang, a northeast city of China. The first research question explored the transformational leadership model in Chinese school context. Key words relevant to transformational school leadership practices were identified from teachers’ survey answers using content analysis for formulating the Chinese transformational school leadership questionnaire. Additionally, the Chinese transformational school leadership questionnaire was formulated using principal component analysis. Subsequently, the organizational characteristics questionnaire, and the teachers’ commitment to change questionnaire were validated using principal component analysis and reliability analysis for answering remaining two research questions. The second research question investigated the effects of organizational and teachers’ factors on teachers’ perception of transformational school leadership. The results of multiple regression analysis revealed that variables like culture, strategy, environment, and teacher’s age had significant relationships with teachers’ perception of transformational school leadership. Culture, environment, strategy, structure, and teachers’ factors such as age and grade teacher taught had moderate effects on different dimensions of teachers’ perception of transformational school leadership. The third research question examined the effects of transformational school leadership on teachers’ commitment to change. The results of linear regression showed that the effect of transformational school leadership was moderate when transformational school leadership and teachers’ commitment to change were treated as a single variable. Four dimensions of transformational leadership practices together explained the moderate effects on the four dimensions of teachers’ commitment to change respectively, among which the effect of managing the instructional program was the most prominent. This study represents an original attempt to understand how Chinese teachers perceive transformational school leadership, the effects of organizational and personal factors on teachers’ perception of transformational school leadership, and the effects of transformational school leadership on teachers’ commitment to change in the Chinese urban upper secondary school context. This research seeks to contribute to leadership development and school change practices in the Chinese school context.
Seismic Behaviour of Reinforced Concrete Columns
Keywords: seismic behaviour
concrete columns
confinement
steel reinforcement
FRP jackets
experiments
nonlinear analysis

Appropriate transverse confinement can significantly improve strength, ductility and energy dissipation capacity of reinforced concrete columns, therefore enhancing their seismic resistance. This study is conducted to evaluate the seismic behaviour of concrete columns transversely confined by steel spirals, ties or fiber reinforced polymer (FRP) wrapping. In the experimental program of this study, fifteen circular concrete columns of 356 mm (14 in.) diameter and 1473 mm (58 in.) length were tested under lateral cyclic displacement excursions while simultaneously subjected to constant axial load thus simulating earthquake loads. Eight columns were solely confined by various amounts of steel spirals, while seven other columns containing only minimal steel spirals were retrofitted by external FRP wrapping. Test results revealed that the increased transverse confinement can improve the energy dissipation capacity, ductility, deformability and flexural strength of concrete columns. The required transverse confinement should also be enhanced with the increase of axial load level to satisfy certain seismic design criterion. A computation program was developed to conduct monotonic pushover analysis for confined concrete columns, which can predict the envelope curves of moment vs. curvature and shear vs. deflection hysteresis loops with reasonable accuracy for columns subjected to simulated seismic loading. Based on extensive numerical analysis, expressions were developed for the relationships between the amount of transverse confinement and different ductility parameters, as well as the strength enhancement of confined columns. Finally, design procedures to determine the amount of transverse confinement were developed for concrete columns to achieve a certain ductility target. The enhancement of flexural strength of columns due to transverse confinement was also evaluated.