VictorJuiz/thesis huggingface dataset:
Work-life Balance Programs in Canadian Workplaces: Factors Affecting Availability and Utilization
Keywords: work-life balance programs
business strategy
family-friendly culture
long-hour organizational culture
managers' work hours
parental leave
participation in decision making
job demand
work-life conflict

The thesis explores the factors affecting the availability and utilization of work-life balance programs in Canadian workplaces and how employee involvement and participation programs can help employees balance their work and life. The introductory chapter provides background information on the importance of balancing work and life. It outlines chapters two, three, and four and reveals the overarching theme that unites them. Chapter Two explores how business strategy affects the availability of work-life balance programs. This chapter uses the 2003 and 2004 Canadian Workplace and Employee Survey to demonstrate that product leadership business strategy is positively related to the likelihood of adopting work-life balance programs (i.e. employee assistance programs, fitness and recreation centers). Cost leadership strategy is shown to be negatively correlated to the adoption of these programs. This study also finds that high performance work systems mediate the relationship between business strategy and employer responsiveness to work-life balance issues. Chapter Three investigates how a company’s family-friendly culture affects the likelihood of an employee’s use of parental leave. Using a national representative and linked employer and employee survey, this study finds that a long-hour organizational culture, which is revealed through managers’ work hours, discourages new parents from taking parental leave. This study also finds that when managers work long hours, it has a greater negative effect on the probability of male employees taking parental leave than female employees. Chapter Four discusses how participation in decision making (PDM) can help employees balance the demands from work and life. Using Karasek’s (1979) job demand-job control model, this study finds that PDM can reduce work-life conflict, but the reduction only works for employees who work long hours. For those employees who work short hours, PDM increases their work-life conflict. Chapter Five summarizes the empirical results. Implications for employers, labour unions, and policy makers are discussed.
An Exploration of Differences in Response to Music Related to Levels of Psychological Health in Adolescents
Keywords: adolescents
popular music
development
preference
semantic differential scales

Popular music plays a significant role in the lives of most adolescents. The central question explored is whether three groups of adolescents (psychiatrically ill, depressed, and non-clinical adolescents) differed on self-reported data on: (a) the role of popular music in their lives, and (b) in their emotional reactions to music. The next question is whether the developmental issues of gender and personality consolidation, age, and school commitment simultaneously influence how the three groups of adolescents use music in their lives and in their emotional reactions to music. The last question is whether the three groups have significantly different music preferences in the five genres of popular (rap, pop/dance, heavy metal/hard rock, classic rock, and alternative). There were 126 subjects employed in this research. I created the Walker Music Questionnaire (WMQ) to explore the role and importance that music plays in the lives of the adolescents. A factor analysis found five factors (Introspection, Identity-Music, Discerning Music Identity, Fantasy-Rebellion, and Identity-Self). The Adolescent Semantic Differential Scales (ASDS) measured the adolescents’ emotional responses to 10 pieces of popular music representing the five genres described above. These scales are well known measures of emotional response and I added eight adjectives that represented adolescent issues. This measure was also factor analyzed and the three factors of Evaluation, Romance, and Potency emerged. Preference for the five genres was determined from the Adolescent Semantic Differential Scales. MANOVAS were done with both sets of factors derived from the WMQ and ASDS simultaneously using the developmental variables of age group, gender, personality, and school commitment. Psychological health was found to be a significant variable. Specifically, the role of music for the depressed group was significantly different from the other two groups of adolescents. The developmental issues that remained significant were personality and school commitment. Furthermore, the psychiatrically ill group reacted more emotionally to the music than the other two groups and this remained significant even when the developmental variable of personality was considered. The three groups were not differentiated by their preference ratings on the ASDS.
Statistical Approximation of Natural Climate Variability
Keywords: climate persistence
climate temporal spectrum
power-law model

One of the main problems in statistical climatology is to construct a parsimonious model of natural climate variability. Such a model serves for instance as a null hypothesis for detection of human induced climate changes and of periodic climate signals. Fitting thismodel to various climatic time series also helps to infer the origins of underlying temporal variability and to cross validate it between different data sets. We consider the use of a spectral power-law model in this role for the surface temperature, for the free atmospheric air temperature of the troposphere and stratosphere, and for the total ozone. First, we lay down a methodological foundation for our work. We compare two variants of five different power-law fitting methods by means of Monte-Carlo simulations and their application to observed air temperature. Then using the best two methods we fit the power-law model to several observational products and climate model simulations. We make use of specialized atmospheric general circulation model simulations and of the simulations of the Coupled Model Intercomparison Project 3 (CMIP3). The specialized simulations allow us to explain the power-law exponent spatial distribution and to account for discrepancies in scaling behaviour between different observational products. We find that most of the pre-industrial control and 20th century model simulations capture many aspects of the observed horizontal and vertical distribution of the power-law exponents. At the surface, regions with robust power-law exponents—the North Atlantic, the North Pacific, and the Southern Ocean — coincide with regions with strong inter-decadal variability. In the free atmosphere, the large power-law exponents are detected on annual to decadal time scales in the tropical and subtropical troposphere and stratosphere. The spectral steepness in the former is explained by its strong coupling to the surface and in the latter by its sensitivity to volcanic aerosols. However power-law behaviour in the tropics and in the free atmosphere saturates on multi-decadal timescales. We propose a novel diagnostic to evaluate the relative goodness-of-fit of the autoregressive model of the first order (AR1) and the power-law model. The collective behaviour of CMIP3 simulations appears to fall between the two statistical models. Our results suggest that the power-law model should serve as an upper bound and the AR1 model should serve as a lower bound for climate persistence on monthly to decadal time scales. On the applied side we find that the presence of power-law like natural variability increases the uncertainty on the long-term total ozone trend in the Northern Hemisphere high latitudes attributable to anthropogenic chlorine by about a factor of 1.5, and lengthens the expected time to detect ozone recovery by a similar amount.
Direct Pen Input and Hand Occlusion
Keywords: human-computer interaction
pen computing
hand occlusion
interaction techniques
tablet
human factors
graphical user interface
image processing
stylus
hand

We investigate, model, and design interaction techniques for hand occlusion with direct pen input. Our focus on occlusion follows from a qualitative and quantitative study of direct pen usability with a conventional graphical user interface (GUI). This study reveals overarching problems relating to poor precision, ergonomics, cognitive differences, limited input, and problems resulting from occlusion. To investigate occlusion more closely, we conduct three formal experiments to examine its area and shape, its affect on performance, and compensatory postures. We find that the shape of the occluded area varies across participants with some common characteristics. Our results provide evidence that occlusion affects target selection performance: especially for continuous tasks or when the goal is initially hidden. We observe how users contort their wrist posture during a simultaneous monitoring task, and show this can increase task time. Based on these investigations, we develop a five parameter geometric model to represent the shape of the occluded area and extend this to a user configurable, real-time version. To evaluate our model, we introduce a novel analytic testing methodology using optimization for geometric fitting and precision-recall statistics for comparison; as well as conducting a user study. To address problems with occlusion, we introduce the notion of occlusion-aware interfaces: techniques which can use our configurable model to track currently occluded regions and then counteract potential problems and/or utilize the occluded area. As a case study, we present the Occlusion-Aware Viewer: an interaction technique which displays otherwise missed previews and status messages in a non-occluded area. Within this thesis we also present a number of methodology contributions for quantitative and qualitative study design, multi-faceted study logging using synchronized video, qualitative analysis, image-based analysis, task visualization, optimization-based analytical testing, and user interface image processing.
Analysis of the Nucleioprotein Complexes Essential for P1 Plasmid Partition
Keywords: Bacterial Chromosome Dynamics
Plasmid Partition

For all organisms, segregation and proper intracellular localization of DNA are essential processes in ensuring faithful inheritance of genetic material. In prokaryotes, several different mechanisms have developed for efficiently moving chromosomal DNA to proper cellular locations prior to cell division, and the same holds true for bacterial plasmids. Low-copy-number plasmids and bacterial chromosomes encode active partition systems to ensure their inheritance within a bacterial cell population. One of the well-studied models of partition is that of the P1 plasmid in E. coli. The partition system encoded by the P1 plasmid is known as parABS - ParA is the partition ATPase, ParB is the partition site binding protein and parS is the partition site. The goal of this thesis was to investigate the nucleoprotein complexes essential in the P1 plasmid partition reaction. First, I examined how a single ParB dimer can bind its complicated arrangement of recognition motifs in parS to initiate the partition reaction. I then characterized a novel ParA interaction with the host nucleoid that is critical for proper P1 plasmid dynamics in vivo. Finally, I demonstrate how ParA can act as an adaptor between the nucleoid and the partition complex; effectively allowing the plasmid to use the nucleoid as a track for its intracellular movement and localization. My thesis work provides evidence towards a model that explains the P1 plasmid partition mechanism.
A Theory-based Analysis of Coercion in Addiction Treatment
Keywords: addiction treatment
coercion
help-seeking
self-determination theory
legal mandate
motivation

The use of coercion to induce entry to addiction treatment is controversial and a large body of research has accumulated considering ethical issues, benefits, and repercussions. However, development of evidence-based policy and practices is hampered by limitations of existing literature. Theoretical and empirical work on self-determination suggests that perceptions of coercion have negative implications for motivation, behaviour change, and psychological well-being; however, these insights have not generally informed research on coerced treatment. The present work seeks to further understandings of the meaning and effectiveness of coerced addiction treatment through a theory-based, prospective study of coercion and treatment processes. The sample includes 276 adults admitted to an outpatient counseling program for alcohol- and drug-related problems. At admission, participants completed questionnaires on motivation, perceived coercion, and pressures to enter treatment. Two months later, a second questionnaire assessed engagement in treatment and substance problem severity (follow-up rate = 74.3%). Retention was determined via self-report and agency records. Analysis was guided by a conceptual model based on Self-Determination Theory. Perceived coercion at admission was associated with greater pressures from legal and informal sources, and lower substance problem severity. Fewer than half (45.7%) of participants were still attending treatment at 2-month follow-up. Clients who reported greater coercion were more likely to leave treatment within the first 2 months, and to qualify that decision by statements indicating a lack of perceived need for continued treatment. Greater autonomous motivation was associated with higher client confidence in treatment, and lower perceived coercion and greater informal pressure were associated with greater resolution of substance problems in the weeks following admission. This work contributes empirical evidence to ongoing debates over the legitimacy of coerced addiction treatment by reframing relevant concepts in terms of client perspectives and evaluating the impact on treatment processes. Results raise questions about previous conclusions of the effectiveness of coerced treatment and suggest many future avenues for research. In particular, research is needed to evaluate the longer-term implications of coercion and the changing nature of perceptions and motivation during treatment.
Regulation of Canonical and Non-canonical NF kappa B Signalling in Lymphocytes by the Bcl10-MALT1 Complex
Keywords: NF kappa B
Signalling

The NF kappa B family of heterodimeric transcription factors is activated by many stimuli, and lead to the upregulation of countless genes. Not surprisingly, NF kappa B plays a critical role in many aspects of cellular function. In T and B lymphocytes, antigen receptor stimulation leads to the activation of NF kappa B through a signal transduction cascade involving the Bcl10-MALT1 complex. We hypothesized that this complex may be critical to signalling cascades other than those emanating from antigen receptors. B cell activation factor of the TNF family (BAFF) activates non-canonical NF kappa B heterodimers that promote B cell survival. Here, we show that MALT1 is required for BAFF-induced phosphorylation of NF kappa B2 (p100), p100 degradation and RelB nuclear translocation in B220+ B cells. TRAF3, a known negative regulator of BAFF-R mediated signaling, interacts with MALT1 in a manner which is negatively regulated by BAFF, and TRAF3 levels are enhanced in MALT1-/- B cells. MALT1-/- CD21highCD23low (MZ) B cells show a defect in BAFF-induced survival and MALT1-/- x BAFF-transgenic (Tg) mice have decreased MZ and B1 B cell levels compared to BAFF-Tg mice. In agreement with this in vitro data, phenotypes associated with over-expression of BAFF including increased serum immunoglobulin titres, spontaneous germinal center (GC) formation, and immune complex deposition in the kidney were found to be dependent on B cell-intrinsic MALT1 expression. Our results demonstrate a novel role for MALT1 in biological outcomes induced by BAFF-mediated signal transduction. The mechanism by which the Bcl10-MALT1 complex regulates antigen induced NF kappa B activation in T cells remains controversial. To shed light on this regulatory network, we conducted biochemical purification of Bcl10, and identified Uev1a, a known regulator of antigen receptor mediated NF kappa B activation. We hypothesized that mms2, and structurally similar molecule to Uev1a, may also impinge on NF kappa B activation. Mms2 overexpression in 293T cells inhibited the Bcl10-induced activation of an NF kappa B sensitive luciferase. Lymphocyte development and antigen receptor induced activation occurs normally mms2-/- mice. However, class switched serum immunoglobulins, and survival responses to DNA damage inducing gamma-irradiation, are decreased in mms2-/- mice. Therefore, mms2 is dispensible in vivo for lymphocyte function and development, but is required for DNA damage responses.
Aesthetics of Expenditure: Art, Philosophy, and the Infinite Faculty
Keywords: aesthetics
philosophy
art history
teleology
expenditure
anthropocene
Immanuel Kant
Georges Bataiile
Robert Smithson
Gilles Deleuze
Jacques Derrida

The dissertation re-examines the philosophy of Georges Bataille within the context of post-Kantian aesthetics and argues for a re-evaluation of Bataille’s notion of expenditure [depenser] within this context. The dissertation argues further that the artistic practice of Robert Smithson is an exemplary case of an ‘aesthetics of expenditure.’ It is our contention that Bataille’s cosmic-energetic philosophy finds a complementary material expression in Smithson’s abstract geology and its confrontation with post-Kantian aesthetics. We will argue that this occurs through Smithson’s varying strategies, which are grouped conceptually according to the broader logic of their expression:seriality, sedimentality, monumentality, and meandering. While Smithson’s own references to Bataille in the early 1970s are discussed in detail, it is not our position that Smithson was enacting Bataille’s philosophy ‘aesthetically’; rather, by reading Bataille’s evaluation of Kant’s aesthetics and teleology in relation to Smithson’s artistic practice, we emphasize instead that the politics of disgust shared by both figures advance a radical decentring and repositioning of the human in relation to planetary and geological forces. If, as geologists now agree, our present age is that of the Anthropocene1, our argument is that Bataille and Smithson anticipate this precarious condition analytically, and, perhaps more importantly, that their analysis suggests further important diagnostic considerations at the level of social organization and political composition that might help defer, if not entirely prevent, the catastrophic end of this all-too-human period.
Tax, Time and Territory: The Development of Early Childhood Education and Child Care in Canada and Great Britain
Keywords: Child Care Policy
Early Childhood Education Policy

This dissertation examines the evolution of Britain’s and Canada’s early childhood education and child care (ECEC) sectors, especially the growing number of policy initiatives adopted in both countries over the past thirty years. I contend that policy coalitions in both countries have been able to promote gradual but nevertheless important policy changes by grafting new purposes onto inherited institutions. The result of these incremental changes has been ECEC systems that often appear incoherent and disjointed. The dissertation also explores how Canada and Great Britain have increasingly followed distinct trajectories. In particular, I demonstrate that while a growing proportion of ECEC services are provided by the commercial sector in Britain, Canada has instead increasingly relied on the non-profit sector to deliver such services. I contend in this dissertation that differences between the two cases are the result of distinct policy coalitions that have emerged in both countries. I make the case that the character of these coalitions and their capacity to promote, institutionalize, protect and further their policy preferences are the result of, first, the sequence of policy development and, second, the territorial organization of the welfare state in both countries. In short, as a result of the federal nature of Canada, Canadian child care activists were able to ensure the early institutionalization of a regulatory framework that constrained the expansion of for-profit services. By the time Britain adopted a national framework, in the late 1980s and early 1990s, on the other hand, the for-profit sector had already established a strong presence. Covering more than one hundred twenty five years of policy development in both countries, this dissertation draws both on extensive archival research and on interviews with policy-makers and ECEC activists.
Development and Evaluation of the iWalker: An Instrumented Rolling Walker to Assess Balance and Mobility in Everyday Activities
Keywords: Assistive Devices
Gait
Postural Control
Ambulatory Monitoring

The rollator is a mobility aid commonly used to facilitate balance and mobility for individuals with cardiorespiratory, musculoskeletal, or neurological deficits. Despite its popularity, there are also reports of adverse effects related to walker use linked to increased fall risks. Studies examining the effectiveness and consequences of rollator use have employed standard laboratory-based measurement methods that rely on performing specific tasks within a short time period and under controlled conditions, potentially limiting generalization to mobility in the everyday context. An instrumented rolling walker (iWalker) was developed as an ambulatory measurement tool applicable to the assessment of balance outside of the lab or clinic for assistive device users. The iWalker autonomously collects measurements of the upper and lower limb behaviour related to balance, walker kinematics, and video of the immediate spatial environment. The design and development of the iWalker is first described, followed by two studies characterizing the involvement of the upper limbs for balance in standing and walking that served to address gaps in the literature and evaluate the utility of the upper limb measures. Overall, the upper limbs can become the primary effectors of balancing forces when lower limb capabilities are compromised. When lower limb involvement was experimentally constrained, the upper limbs became the primary effectors of balance control in healthy, young adults. In older adults, individuals demonstrating the highest upper limb usage during walking were associated with the largest reduction in frontal plane stepping parameters (i.e., step width). A third study evaluated the applicability of the iWalker to assess everyday mobility in a series of in-patients recovering from neurological injury (i.e., stroke, traumatic brain injury). Patients demonstrated significantly different upper limb balancing behaviour in everyday situations compared to in-laboratory assessments. Furthermore, the iWalker captured behaviours that may be precursors to falling, such as collisions, stumbling and lifting the assistive device. The implications of these studies on assessing the effectiveness of rollators and feasibility of using the iWalker in follow-up efforts are discussed.