VictorJuiz/thesis huggingface dataset:
Transitioning To High School: Parent Involvement And School Choice
Keywords: transitioning, parent involvement, school choice, high school, high school, parent-school relationships, parenting, capital, Parent Councils, specialized schools/programs, critical analysis, constructivism, institutional ethnography

Abstract The disquiet around parent-school relationships is the focus of this study. During transitioning to high school, the boundaries around this relationship changes. Few studies have addressed these changes, particularly from parents’ perspectives. It is parents’ voices which are central to this study. This dissertation uses the standpoint of parents, which is often absent or silent in educational literature and research. Within a critical and constructivist paradigm, and influenced by Institutional Ethnography, two elementary schools (divergent in race, social class, ethnicity and immigrant status) and one high school are the sites for interviews with 14 parents and 13 educators. 11 parents were re-interviewed after their children entered high school. Four questions were addresses: How has parent involvement come to be understood? How is the parent-school relationship experienced by parents and educators? How and why are decisions made around the transition and school choice process? Do parents’ perceptions align/vary from those of educators? Based on historically constructed notions and assumptions, parent involvement is usually understood as a visible and public demonstration of appropriate and caring parenting ignoring interactions outside of the public’s gaze. Illustrated through Parent Council membership, parent involvement is gendered, classed, culturally related and race, ethnic and immigrant status specific. Some parents had more social, cultural, economic and emotional capital to bring to the transition process, while others were marginalized and had to rely on/trust the education system. School and Board policies and procedures were examined and their varied affects on parents’ experiences and choices analysed. Educators assisted in disseminating assumptions around parent-school relationships and contributed to inequitable parent knowledge, partially as a result of too little training. By examining social, economic and cultural positioning of parents within local school communities, positive parent-school relationships can be nurtured, which political pundits and educationalists have failed to accomplish. During transitioning, organization and social discontinuities contributed to parent and school disconnects and constructed borderlands in the parent-child-school relationship. This study evidenced the fragility of the parent-school relationship, especially during this vulnerable time for parents and thus, reflective questions are presented in hope of initiating a crucial conversation in local school communities.
Two Orchestral Songs
Keywords: orchestral song
contralto voice
song cycle
Gwendolyn MacEwen
music composition
enneatonic scale

The song cycle, Two Orchestral Songs, is a setting of two texts by Canadian poet Gwendolyn MacEwen (1941–1987) from her 1969 collection, The Shadow-Maker. The texts are symbolic in nature and discuss the question of personal sacrifice. In “The Sacrifice,” the narrator observes leaves falling in autumn and compares this “necessary death” against the “unnecessary” sacrifices that we make when we lay down our most beautiful aspects, our “golden selves,” at the “altars of the world” in order to please some external arbiter (the “shapeless ghost”). However, much like a man raking leaves in autumn, these dropped aspects get gathered up by “the Gardener” (a metaphor for Time), and we are left questioning whether our deliberate sacrifices enabled us to achieve the divine end to which we were intended. “How Weeps the Hangman,” employs similar imagery of leaves representing the “season’s sacrifice” of “pain, love, glory, blood.” The titular metaphor of the Hangman, however, draws on tarot imagery, specifically the twelfth Major Arcana card known as The Hanged Man, which depicts a man hanging upside-down by one foot from a cross or living tree; the man’s facial expression is usually neutral, not an expression of suffering. The card is interpreted in various ways as meaning sacrifice, letting go, surrender, and acceptance. In MacEwen’s poem, the narrator places herself (and us) on the way to the scaffold to offer up our seasonal sacrifices, but the lingering question focuses not on the object (us, The Hanged Man), but on the agent of change, the hooded Hangman who “does his duty to you and me.” She wonders what pain our own whimpering in the sacrificial process causes to him, whether he and the “embarrassed tree” weep at our losses. The musical language of this composition employs extended tonal key areas based on synthetic scales, in particular the four transpositionally related enneatonic scales. The harmonies are largely tertian in structure, with added tones and superimposed sonorities creating an effect of bitonality. The imagery of dropping leaves is recreated musically by the prominent use of descending seconds and descending thirds in the melodic and accompanying parts.
Reason, Evolution, and the Possibility of Cooperation
Keywords: Rationality
Morality
Evolution
Cooperation

“Cooperation” has distinct meanings in biological and moral contexts. In nature, “cooperation” is commonly equated with “altruism,” and involves an apparent fitness cost to the actor. In the moral context, it is often employed to describe the behaviour required by a particular subset of morality, namely that of distributive justice. The existence of cooperation in nature poses a difficulty for those who seek explain it in evolutionary terms. There is an analogous problem in normative moral theory of reconciling cooperative behaviour with rationality. The constraints imposed by natural selection in the former context and by rationality in the latter make explaining or justifying cooperation difficult. Insofar as the social contract tradition is concerned with articulating or justifying the terms of social cooperation, these two problems are united through the contract metaphor. I examine these two structurally similar problems through the lens of the social contract tradition. In the descriptive arena, I argue that cultural group selection provides the most plausible explanation of the emergence of altruistic behaviours in nature. In the normative context, I argue that David Gauthier’s argument for the rationality of adopting the disposition of constrained maximization provides a defensible route to reconciling morality with rationality. I draw two conclusions with respect to how these two enterprises are connected. First, I argue, contrary to many critics of an empirically informed ethics, that the descriptive and normative projects are very much dependent upon one another. Insofar as culture is required for a descriptive account of the emergence of cooperation, and to the extent that reasoning about which norms ought to govern our interactions plays a role in their transmission, our descriptive account not only leaves room for normative considerations, but in fact requires them. Second, I argue that there is a convergence in the outcomes of both the descriptive and normative projects. I show that the explanation of the existence of cooperation that I favor also provides us with an explanation of the emergence of dispositions that structurally resemble those that Gauthier defends as rational. And thus we arrive at an account that brings together rationality, evolution, and morality.
Synthesis and Mechanical Properties of Bulk Quantities of Electrodeposited Nanocrystalline Materials
Keywords: nanocrystalline materials
electrodeposition
ductility
tension test
hardness test
Weibull

Nanocrystalline materials have generated immense scientific interest, primarily due to observations of significantly enhanced strength and hardness resulting from Hall-Petch grain size strengthening into the nano-regime. Unfortunately, however, most previous studies have been unable to present material strength measurements using established tensile tests because the most commonly accepted tensile test protocols call for specimen geometries that exceeded the capabilities of most nanocrystalline material synthesis processes. This has led to the development of non-standard mechanical test methodologies for the evaluation of miniature specimens, and/or the persistent use of hardness indentation as a proxy for tensile testing. This study explored why such alternative approaches can be misleading and revealed how reliable tensile ductility measurements and material strength information from hardness indentation may be obtained. To do so, an electrodeposition-based synthesis method to produce artifact-reduced specimens large enough for testing in accordance with ASTM E8 was developed. A large number of 161 samples were produced, tested, and the resultant data evaluated using Weibull statistical analysis. It was found that the impact of electroforming process control on both the absolute value and variability of achievable tensile elongation was strong. Tensile necking was found to obey similar processing quality and geometrical dependencies as in conventional engineering metals. However, unlike conventional engineering metals, intrinsic ductility (as measured by maximum uniform plastic strain) was unexpectedly observed to be independent of microstructure over the grain size range 10-80nm. This indicated that the underlying physical processes of grain boundary-mediated damage development are strain-oriented phenomena that can be best defined by a critical plastic strain regardless of the strength of the material as a whole. It was further shown that the HV = 3•σUTS expression is a reliable predictor of the relationship between hardness and strength for electrodeposited nanocrystalline materials, provided the material is ductile enough to sustain tensile deformation until the onset of necking instability. The widely used relationship HV = 3•σY was found to be inapplicable to this class of materials owing to the fact that they do not deform in an “ideally plastic” manner and instead exhibit plastic deformation that is characteristic of strain hardening behaviour.
Decision-theoretic Elicitation of Generalized Additive Utilities
Keywords: Utility elicitation
Decision theory

In this thesis, we present a decision-theoretic framework for building decision support systems that incrementally elicit preferences of individual users over multiattribute outcomes and then provide recommendations based on the acquired preference information. By combining decision-theoretically sound modeling with effective computational techniques and certain user-centric considerations, we demonstrate the feasibility and potential of practical autonomous preference elicitation and recommendation systems. More concretely, we focus on decision scenarios in which a user can obtain any outcome from a finite set of available outcomes. The outcome is space is multiattribute; each outcome can be viewed as an instantiation of a set of attributes with finite domains. The user has preferences over outcomes that can be represented by a utility function. We assume that user preferences are generalized additively independent (GAI), and, therefore, can be represented by a GAI utility function. GAI utilities provide a flexible representation framework for structured preferences over multiattribute outcomes; they are less restrictive and, therefore, more widely applicable than additive utilities. In many decision scenarios with large and complex decision spaces (such as making travel plans or choosing an apartment to rent from thousands of available options), selecting the optimal decision can require a lot of time and effort on the part of the user. Since obtaining the user's complete utility function is generally infeasible, the decision support system has to support recommendation with partial preference information. We provide solutions for effective elicitation of GAI utilities in situations where a probabilistic prior about the user's utility function is available, and in situations where the system's uncertainty about user utilities is represented by maintaining a set of feasible user utilities. In the first case, we use Bayesian criteria for decision making and query selection. In the second case, recommendations (and query strategies) are based on the robust minimax regret criterion which recommends the outcome with the smallest maximum regret (with respect to all adversarial instantiations of feasible utility functions). Our proposed framework is implemented in the UTPref recommendation system that searches multiattribute product databases using the minimax regret criterion. UTPref is tested with a study involving 40 users interacting with the system. The study measures the effectiveness of regret-based elicitation, evaluates user comprehension and acceptance of minimax regret, and assesses the relative difficulty of different query types.
When Social and Physical Pain Intersect in Humans
Keywords: Pain
Relationships
Social Exclusion

Prior research has shown that the distress associated with social exclusion (i.e., social pain) and physical pain share biological and neural substrates. This social-physical pain overlap has spawned a number of hypotheses regarding how both types of pain might interact. The dissertation research reported here employed diverse methodologies to investigate two questions stemming from these hypotheses: 1) what is the effect of social pain on physical pain sensitivity and 2) what is the effect of physical pain on social pain sensitivity? Pertaining to the first question, Study 1 showed that a socially disconnecting live interaction with a partner led to a decrease in physical pain sensitivity. This result, however, was not replicated in Study 2 using an imagination paradigm to conjure two different types of social exclusion experiences, nor did low levels of social connectedness predict subsequent physical pain levels in a sample of chronic pain patients in Study 3. Pertaining to the second question, pain levels did not predict subsequent reports of social disconnection in the diaries of chronic pain patients in Study 3, nor did participants experiencing capsaicin-induced physical pain report social judgments any different from their pain-free counterparts in Study 4. The reasons for, and meaning of, these findings are discussed in detail. Crucial questions that must be confronted to continue advancement in this area of research and recommendations for future studies are also explored.
Robustness and Vulnerability Design for Autonomic Management
Keywords: Vulnerability
Robustness

This thesis presents network design and operations algorithms suitable for use in an autonomic management system for communication networks with emphasis on network robustness. We model a communication network as a weighted graph and we use graph-theoretical metrics such as network criticality and algebraic connectivity to quantify robustness. The management system under consideration is composed of slow and fast control loops, where slow loops manage slow-changing issues of the network and fast loops react to the events or demands that need quick response. Both of control loops drive the process of network management towards the most robust state. We fist examine the topology design of networks. We compare designs obtained using different graph metrics. We consider well-known topology classes including structured and complex networks, and we provide guidelines on the design and simplification of network structures. We also compare robustness properties of several data center topologies. Next, the Robust Survivable Routing (RSR) algorithm is presented to assign working and backup paths to online demands. RSR guarantees 100% single-link-failure recovery as a path-based survivable routing method. RSR quanti es each path with a value that represents its sensitivity to incremental changes in external traffic and topology by evaluating the variations in network criticality of the network. The path with best robustness (path that causes minimum change in total network criticality) is chosen as primary (secondary) path. In the last part of this thesis, we consider the design of robust networks with emphasis on minimizing vulnerability to single node and link failures. Our focus in this part is to study the behavior of a communication network in the presence of node/link failures, and to optimize the network to maximize performance in the presence of failures. For this purpose, we propose new vulnerability metrics based on the worst case or the expected value of network criticality or algebraic connectivity when a single node/link failure happens. We show that these vulnerability metrics are convex (or concave) functions of link weights and we propose convex optimization problems to optimize each vulnerability metric. In particular, we convert the optimization problems to SDP formulation which leads to a faster implementation for large networks.
Signal Processing Techniques for High-speed Chip-to-chip Links
Keywords: analog electronics

This thesis tackles the problem of high-speed data communication over wireline channels. Particular attention is paid to backplane channels which have impedance discontinuities and high-frequency loss. These channels require extra equalization effort in order to produce an open eye diagram at the receiver. Three signal processing techniques were investigated in the pursuit of higher data rates over backplane channels: transmit-side FIR filter equalization with variable tap spacing, bidirectional communication using frequency-division multiplexing, and an ADC-based receiver to provide a capability for non-linear equalization. The ADC presented here is a 5-bit flash ADC intended to be time-interleaved to attain a sufficient data rate. This ADC uses redundant comparators to obtain sufficient resolution without an explicit threshold tuning circuit. A resonant clocking line is used to reduce power and increase the maximum clock frequency.
Characterization of Azobenzene-based Photo-switches and their Evaluation for In Vivo Applications
Keywords: Biological Chemistry

Photoisomerization of azobenzene can be used to reversibly photo-control peptide and protein structure, thereby offering the potential to probe peptide and protein function directly in living systems. Most azobenzene photo-switches to date however require the use of UV light, which suffers from poor tissue penetration and can lead to cell damage. In addition, the unknown stability of azobenzene photo-switches within the reducing intracellular environment has limited these switches to extracellular applications. The ability to red-shift the photo-switching wavelength and tune the thermal cis-to-trans rate independently from one another has been a central challenge. Incorporating a piperazine-like moiety at the 4,4′-para positions red-shifts the π-π* band of an azobenzene-based cross-linker such that trans-to-cis photoisomerization can be triggered with blue light. Accompanying this red-shift was a faster cis-to-trans thermal rate, which allowed for fast secondary structural changes of the attached peptides (τ½ ~2s). Piperazine-like moieties at the 2,2′-ortho positions of an azobenzene-based cross-linker resulted in a similar red-shift in the π-π* band but a longer-lived cis isomer relative to its para-counterpart (τ½ ~minutes). These results suggest that the thermal rate could be tuned independently from the photo-switching wavelength by appropriate para or ortho substitution. The effect of 2,2′,6,6′-ortho-tetramethoxysubstitution provided an alternative approach to red-shifting the photo-switching wavelength. These groups caused an unconventional red-shift in the n-π* band of the trans isomer allowing for trans-to-cis and cis-to-trans photoisomerization to occur with green and blue light, respectively. In this case, the half-life of the cis isomer was not shortened, but rather extended relative to its parent compound (τ½ ~days versus minutes). These results provide progress in tuning the photo-switching wavelength independently from the thermal rate. A fluorescent reporter was developed to determine the stability of a commonly employed 4,4′-diamido derivative in vivo. Photoisomerization was found to cause time-dependent changes in fluorescein emission intensity. The reporter was microinjected in zebrafish embryos and photo-switching could be imaged for at least two days. This work provides the first direct evidence of azobenzene photo-switching in vivo, and indicates that it will be possible, in general, to photo-control peptide and protein function in living systems.
Canadian Campaign Finance in Comparative Perspective 2000-2011: A Failed Paradigm or Just a Cautionary Tale?
Keywords: Campaign finance reform 2000-2011
Political party finance
Canada/U.S./U.K.
Public administration of political finance
Canada political parties
Political finance Anglo-American democracies
Public policy of campaign finance

This thesis compares the public policies of campaign finance in Canada with those in the U.S. and the U.K. in the period 2000-2011. The majority of the Canadian literature on party finance demonstrates a belief in the efficacy and necessity of the enterprise. This dissertation suspends this disposition and offers a critical approach to the regulation of money in Canadian elections. This thesis situates the discussion of party finance regulation in the context of contending models of democracy. Campaign finance rule changes are conceptualized within a new institutionalist framework. Changes in campaign finance rules are seen as changes in incentives and are seen to work in configurations, that is, interacting with existing formal and informal constraints. New institutionalism provides the avenue of inquiry into the position of political parties on the boundary of the public and private spheres and how campaign finance regulation may shift that boundary. This thesis adopts a mixed-method approach, incorporating the results of 65 semi-structured interviews with academics and political practitioners with primary document research. This thesis demonstrates that campaign finance rule changes interact with other electoral rules, types of parties and the nation’s historic institutions. The need to meld Quebec’s statist and civil-code traditions with Westminster democratic traditions, the introduction of the Charter of Rights and Freedoms and the role of subsequent court decisions, and the role of Elections Canada in its political finance oversight capacity, constitute major catalysts for Canadian party finance rule changes and for understanding the impact of rule changes. Contrary to the majority of literature on campaign finance reform, this thesis demonstrates that there may be diminishing marginal returns to additional campaign finance regulations, at least in a mature democracy such as Canada. Campaign finance rules reveal preferences for different models of democracy. As such, they must be carefully monitored.