VictorJuiz/thesis huggingface dataset:
Online Analysis of High Volume Social Text Streams

Social media is one of the most disruptive developments of the past decade. The impact of this information revolution has been fundamental on our society. Information dissemination has never been cheaper and users are increasingly connected with each other. The line between content producers and consumers is blurred, leaving us with abundance of data produced in real-time by users around the world on multitude of topics. In this thesis we study techniques to aid an analyst in uncovering insights from this new media form which is modeled as a high volume social text stream. The aim is to develop practical algorithms with focus on the ability to scale, amenability to reliable operation, usability, and ease of implementation. Our work lies at the intersection of building large scale real world systems and developing theoretical foundation to support the same. We identify three key predicates to enable online methods for analysis of social data, namely : - Persistent Chatter Discovery to explore topics discussed over a period of time, - Cross-referencing Media Sources to initiate analysis using a document as the query, and - Contributor Understanding to create aggregate expertise and topic summaries of authors contributing online. The thesis defines each of the predicates in detail and covers proposed techniques, their practical applicability, and detailed experimental results to establish accuracy and scalability for each of the three predicates. We present BlogScope, the core data aggregation and management platform, developed as part of the thesis to enable implementation of the key predicates in real world setting. The system provides a web based user interface for searching social media conversations and analyzing the results in multitude of ways. BlogScope, and its modified versions, index tens to hundreds of billions of text documents while providing interactive query times. Specifically, BlogScope has been crawling 50 million active blogs with 3.25 billion blog posts. Same techniques have also been successfully tested on a Twitter stream of data, adding thousands of new Tweets every second and archiving over 30 billion documents. The social graph part of our database consists of 26 million Twitter user nodes with 17 billion follower edges. The BlogScope system has been used by over 10,000 unique visitors a day, and the commercial version of the system is used by thousands of enterprise clients globally. As social media continues to evolve at an exponential pace, there is a lot that still needs to be studied. The thesis concludes by outlining some of possible future research directions.

Keywords: social media
analytics
algorithms
Advisor: Koudas, Nick
Competition, Innovation, and Regulation: Accounting for Productivity Differences

The relationships between competition, innovation, and regulation have long been studied in an attempt to understand and evaluate the effect of regulation on the wealth and growth of nations. Recent empirical work has emerged taking advantage of the still ongoing proliferation of ever more disaggregated data to shed more light on these relationships and at the same time uncover new puzzles in need of explanations. This thesis is an attempt to address the discrepancies between some of these newly discovered phenomena and current theory. In Chapter 1 I introduce an insight of Friedrich Hayek - that competition allows a thousand flowers to bloom, and discovers the best among them - into a conventional model of Schumpeterian innovation. I show how the model can account for two seemingly contradictory empirical phenomena, a positive relationship between competition and industry-level productivity growth, and an inverted-U relationship between competition and firm-level innovation. In Chapter 2 I extend the model to investigate the effects of patent protection on competition and innovation, and to understand the interaction between patent policy and product-market regulation. I calibrate the model to show that patent protection in the U.S. is depressing competition, innovation, growth, and welfare. Using patent and citation data, I further provide empirical evidence supporting the implications of the model. In Chapter 3 I investigate the impact of regulatory entry barriers to new firms on aggregate output and total factor productivity. Following recent work by Thomas J. Holmes and John J. Stevens, I extend a standard model of monopolistic competition to account for the existence of both niche markets and mass markets within industries. Calibrating the model using U.S. manufacturing data, I show this extension goes a long way towards explaining the large gap between empirical estimates of the impact of barriers to entry and the quantitative predictions of current models.

Keywords: macroeconomics
competition
regulation
innovation
Advisor: Restuccia, Diego
An Investigation of Change in the Lives of Spouses of Amnestic Individuals

The purpose of the present study was to explore the ways that spouses of persons with ABI experience a process of change in roles, routine, and overall lifestyle and the subsequent implications for their support needs. The present study used a qualitative narrative inquiry methodology to examine the process of the experiences of this population of spouses. In-depth semi-structured interviews were conducted with 15 spouses, each of whom was engaged in a heterosexual relationship. There were 10 female and five male participants whose ages ranged from 40 to 61. Twelve of the participants were formally married, and three were in a common law relationship. In the interviews, the participants were asked about the changes in their lives after the onset of their spouses’ brain injuries. The data analysis was informed by narrative inquiry with attention paid to the structure of the participants’ stories. A three phase trajectory of caregiving emerged from the analysis which provided details regarding the process of change in the spousal caregiving role and how various role transitions within this role were intertwined with stressors and other feelings. The research highlighted three phases of caregiving including an Embryonic, Immersed and Modified Caregiver phase. The findings were theoretically important for identifying: how these spouses situate themselves within role transitions; coping strategies; various support needs; and future directions for research in this area.

Keywords: Spousal Caregivers
Spouses
ABI
TBI
role transitions
stress
caregiving
narrative inquiry
Advisor: Schneider, Margaret
A Qualitative Examination of Career Resiliency in Professional Immigrants

This qualitative study endeavored to interview professional immigrants in order to better understand the adjustment and career-related challenges that professional immigrants encounter when they immigrate to Canada and pursue educational retraining. The main purpose of the study was to explore retraining decisions and outcomes and uncover the factors that influence career resiliency amongst professional immigrants. It was discovered that most professional immigrants have a desirable pre-immigration career and come to Canada to provide a better standard of living for themselves and/or their children. Professional immigrants often expect that they will be able to continue in their vocational field after arriving in Canada with little or no retraining. Unfortunately, most professional immigrants encounter significant initial career barriers such as discrimination, a lack of social networks, and non-recognition of foreign education and work experience. These barriers often lead to issues such as unemployment, under-employment, unfair treatment, psychological distress and a reduced standard of living. To help cope with these difficulties, most professional immigrants rely on social support and personal actions. In particular, encountered career challenges often prompt professional immigrants to adopt educational retraining as a career-enhancing strategy. The specific retraining experiences and career outcomes of participants were explored and discussed in detail. In summary, some participants were able to re-establish a career in Canada that was as satisfying as their pre-immigration career, however, most participants were unable to establish a career that is equivalent to their pre-Canadian career status. A number of participants even found themselves’ unemployed or grossly under-employed despite living in Canada for at least six years and having completed retraining. Overall, participants in this study represented a wide range of experiences which served to guide the formation of a new theoretical model for career resiliency. In addition to accounting for the influence of individual, relational and contextual factors, the newly presented Relative Encompassment Model of Career Resiliency accounts for the influence of relative comparisons, which were found to influence participant’s attitudes, perceptions and coping abilities. The important implications for theory, policy and practice are discussed. Suggestions for future research on career resiliency are also made.

Keywords: professional immigrants
resiliency
career
retraining
Advisor: Chen, Charles
Sin and Sanity in Nineteenth-century America

Sin and Sanity in Nineteenth-Century America is an intellectual and cultural history of moral insanity in America. It argues that moral insanity functioned as a naturalized description of the bound will, as a negotition between theology and the scientific 'study of man', and as a critique of the selfishness of diseased society. This dissertation explores the writings of nineteenth-century alienists, trial transcripts, gallows sermons, newspaper coverage of sensational trials, an inmate literary magazine, and the American Journal of Insanity. It argues that moral insanity as a concept functioned not, as sometimes argued, as a secularization of the concept of sin, but as an attempt to sacralize society and, in particular, the law. I have employed the term politicization of grace to describe the complex ways in which the movement to reform the insanity defence to include diseases of the volition was understood in the context of broader religious debates about the self, sin, responsibility, and punishment.

Keywords: moral insanity
sin
mental health
19th century religion
asylum
freedom
will
reason
Advisor: Klassen, Pamela
Understanding of Nurturance and Self-determination Rights in Maltreated Children and Youth

Increasing access to rights for young people has highlighted the fact that little is known about their thinking and understanding of rights issues. However, expanding children’s access to rights without adequate knowledge of how they understand, experience and are able to use these rights, may be detrimental to their well-being. Thus far, research has explored conceptions of rights in several populations, including school aged children and young offenders, but little attention has been focused on maltreated children – a particularly vulnerable group. The purpose of the current study was to examine conceptions of and attitudes towards children’s nurturance and self-determination rights in 10-18-year-old children with histories of maltreatment who were living in state care. Associations between rights conceptions and attitudes, and factors related to the experience of maltreatment and child welfare care (e.g. type of maltreatment, type of foster care, time in care, and number of foster care placement changes), were explored. Rights concepts were assessed by having participants generate and discuss children’s rights issues arising in three contexts: home, school and the greater community, as well as through general knowledge questions. Attitudes were assessed using the Children’s ii iii Rights Attitudes questionnaire (Peterson-Badali, Morine, Ruck & Day, 2004), a 32 item likert-scale measure of children’s endorsement of various nurturance and self-determination rights. Results indicated that, while maltreated children’s conceptions of rights did frequently vary from previous findings with non-maltreated children, there were also a number of broad-based similarities. Interestingly, while maltreatment and child welfare care variables were largely unrelated to rights conceptions and attitudes, participants’ understanding did appear to be informed by the particular concerns that emerged from their unique circumstances (e.g., the fulfillment of basic needs such as food, clothing, and education). Findings are discussed in relation to theory, research, policy, and practice.

Keywords: children's rights
understanding
Advisor: Peterson-Badali, Michele
Girl Power, Boy Power, Class Power: Class and Gender Reproduction in Elite Single-gender Private Schools

This dissertation contributes to our understanding of the role of elite single-gender schools in the reproduction of class and gender inequalities. This is an ethnographic study of an all-boys and all-girls school in the Toronto area, combining participant observation, semi-structured interviews, and web and print school documents. I focused especially on students in their final year of high school, when the potential advantages embedded within a private school are most likely to be capitalized on. The data provide an opportunity highlight three mechanisms of class and gender reproduction. First, I explore the teacher/student relationship as a source of advantage for students and show how teachers are complicit in these negotiations. I make sense of this in the context of the schools&rsquo; belief in the importance of educating the whole child, including traits like leadership, and the university prep focus of these schools. Second, I focus on how school personnel understand their students as gendered subjects and the contradiction this presents at the all-girls school, where administrators are keen on students defying stereotypes but draw on many of those stereotypes to develop best practices at the school. Third, I analyze the university choice process of these students, noting especially how they construct distinctions between Canadian universities despite Canada not having a steep and well-known hierarchy between institutions, and how they use the established hierarchies in other countries. I bring together theories on the correspondence between the economic structure and the education system and the role of culture in reproduction, staying mindful of how these educational settings are structured and what is happening in the classroom, including how students shape their educational experiences through their actions and their interactions with others, especially teachers.

Keywords: Education
Private Schools
Advisor: Welsh, Sandy
Deception in Children With and Without Severe Conduct Problems

Deception is not only part of daily life for adults, but it is also part of typical development throughout childhood. Research has shown that the ability to deceive improves with age and has been found to be related to the development of cognitive skills such as executive functioning processes, theory of mind, and intelligence. However for some children, lie-telling becomes problematic and atypical. For children with conduct problems, deception is one of the most common presenting symptoms and has been found to be pervasive across childhood and into adolescence. While most studies analyze the lying behaviours of these children based on parent and teacher reports, no studies have yet empirically evaluated the actual deceptive behaviours of children with severe conduct problems. The current study investigated the antisocial and prosocial deception rates and abilities of children with and without severe conduct problems. Additionally, cognitive measures and parental reports of lying and parenting styles were considered in order to determine how such variables may be related to deception. A total of 66 children participated in the current study with half of the sample originating from a community agency for children with behaviour problems and the other half consisting of an age- and gender-matched control sample. Results demonstrated that compared to their typically developing counterparts, children with conduct problems were more likely to behave antisocially by committing antisocial transgressions, and subsequently lying. These children were also less likely to tell prosocial lies. Consistent with previous research, many cognitive measures, such as Executive Functioning (e.g., inhibition) and Theory of Mind (1st and 2nd Order) were found to be related to deception for the typically developing sample, though fewer and different cognitive measures were found to be predictive of deception within the clinical sample. Parent ratings of lie-telling frequency were not predictive of antisocial or prosocial deception, though they were predictive of antisocial lie-telling sophistication. Parenting styles were minimally predictive of deception. Results suggest that the mechanisms used by children with conduct problems during deception differ from a typically developing sample. Limitations as well as implications are discussed.

Keywords: Deception
Conduct Problems
Executive Functioning
Theory of Mind
Prosocial Lying
Advisor: Lee, Kang
How Discourses of Biology Textbooks Work to Constitute Subjectivity: From the Ethical to the Colonial

This thesis examines how discourses of biology textbooks can work to constitute various kinds of subjectivities. Using a Foucauldian archaeological approach to discourse analysis I examine how four Ontario secondary school biology textbooks discursively delimit what can be thought and acted upon, and in the process work to partially constitute students/teachers as sex/gendered; neocolonial; neoliberal (and a subject of work), and ethical subjects and subjectivities. This thesis engages the topic of how discourse can constitute subjectivity in science in three basic ways: First, on a theoretical level, in terms of working out an understanding of subject constitution/interpellation that would also be useful when engaging with other sociopolitical and ethical questions in science education. Secondly, in terms of an empirically based critical discourse analysis that examines how various statements within these four textbooks could set limits on what is possible for students to think and act upon in relation to themselves, science, and the world. Thirdly, this thesis represents a narrative of scholarly development that moves from an engagement of my personal experiences in science education and current science education literature towards the general politico-philosophical topic of subjectivity and biopolitics. This thesis begins with a discussion of my experiences as a science teacher, a review of relevant science education literature, and considerations of subjectivity that relate specifically ii to the specific methodological approach I employ when examining these textbooks. After this I present five chapters, each of which can be thought of as a somewhat separate analysis concerning how the discourses of these textbooks can work to constitute specific subjectivities (each involving different theoretical/methodological considerations). I conclude with a reflection/synthesis chapter and a call to see science education as a site for biopolitical struggle.

Keywords: Subjectivity
Science Education
Advisor: Bencze, John Lawrence
Examining Reading Processes and Engagement of Struggling and Proficient Readers when Using iPads

This study investigated the influence of tablet technology on student motivation and engagement for online reading. An ethnographic approach was utilized to examine the case studies of six grade 8 students including three proficient and three struggling readers. In addition to motivation and engagement, their thought processes while conducting online research using an iPad was explored. Several research techniques were employed including participant observation, standardized reading comprehension tests, questionnaires, and participant interviews. The results revealed a significant increase in motivation for reading by the three proficient readers. Results also revealed an increase of two grade levels in reading comprehension for two of the struggling readers. Several findings about students' metacognitive strategies while reading and researching online along with factors affecting motivation and engagement were also explored. These results have the potential to inform classroom literacy instruction and teacher education programs in this rapidly evolving digital age.

Keywords: technology
reading
motivation
engagement
Advisor: Peterson, Shelley Stagg
Shear Rupture of Massive Brittle Rock under Constant Normal Stress and Stiffness Boundary Conditions

The shear rupture of massive (intact non-jointed) brittle rock in underground high stress mines occurs under a variety of different boundary conditions ranging from constant stress (no resistance to deformation) to constant stiffness (resistance to deformation). While a variety of boundary conditions exist, the shear rupture of massive rock in the brittle field is typically studied under constant stress boundary conditions. According to the theory, the fracturing processes leading to shear rupture zone creation occur at or near peak strength with a shear rupture surface created in the post-peak region of the stress-strain curve. However, there is evidence suggesting that shear rupture zone creation can occur pre-peak. Limited studies of shear rupture in brittle rock indicate pre-peak shear rupture zone creation under constant stiffness boundary conditions. This suggests that the boundary condition influences the shear rupture zone creation characteristics. In this thesis, shear rupture zone creation in brittle rock is investigated in direct shear under constant normal stress and normal stiffness boundary conditions. It is hypothesized that the boundary condition under which a shear rupture zone is created influences its characteristics (i.e., shear rupture zone geometry, load-displacement response, shear rupture zone creation relative to the load-displacement curve, and peak and ultimate strengths). In other words, it is proposed that the characteristics of a shear rupture zone are not only a function of the rock or rock mass properties but the boundary conditions under which the rupture zone is created. The hypothesis is tested and proven through a series of simulations using a two dimensional particle based Distinct Element Method (DEM) and its embedded grain based method. The understanding gained from these simulations is then used in the analysis and re-interpretation of rupture zone creation in two mine pillars. This is completed to show the value and practical application of the improved understanding gained from the simulations. The re-interpretation of these case histories suggests that one pillar ruptured predominately under a constant stress boundary condition while the other ruptured under a boundary condition changing from stiffness to stress control.

Keywords: Shear rupture
intact brittle rock
Discrete Element Method
Mining
Advisor: Bawden, William
Kaiser, Peter K.