VictorJuiz/thesis huggingface dataset:
A 5.5GHz Current-Biased Diode Mixer

This thesis studies the design of a novel double-balanced diode mixer for the emerging 5GHz wireless LAN applications. The mixer is designed to convert a 5.3GHz RF signal to a 250MHz IF signal by a 5.55GHz LO signal. By adapting the Gilbert mixer topology into the diode ring mixer, a current source is available to bias the diodes. Therefore, the current-biased diode mixer requires 1dBm LO power compared to 7dBm required by a traditional diode ring mixer. Monolithic transformers are used to couple the RF and LO signal to the mixer. Mathematical analysis of the mixer circuit using harmonic balance is performed to study the harmonic generation process of the mixer. Measurement techniques for the mixer are described, and the measured performance of the fabricated current-biased diode mixer is presented.
Electric furnace slag reduction, AC versus DC

The production of nickel, copper, and cobalt is of great importance to the Canadian economy. Hence, the recovery of these valuable metals from discarded slags has a great economic incentive. By improving the reduction of these slags, it will be possible to increase the recovery of these valuable metals. The objective of the present investigation was to measure the rate of slag reduction during electric furnace smelting and slag cleaning operations. Specifically, the reduction rate was measured by direct CO(g) and CO2(g) measurements with a gas infrared analyzer. The parameters investigated were slag temperature and composition, current density, AC versus DC, electrode depth and diameter, electrode separation, and electrode tip temperature measurement for AC and DC currents. From the rate of slag reduction and electrode consumption, a better understanding of the reduction process was established.
The differential incorporation of racial minority youths, indo-Caribbean, Afro-Caribbean and Punjabi Sikh teens in Toronto and surrounding areas

My thesis explores the differential incorporation of second-generation Indo-Caribbean, Afro-Caribbean and Sikh teens in Toronto and surrounding areas. Using qualitative methodology and nonrandom sampling techniques, I conducted 56 structured in-depth interviews with youths from the three groups between October 1996 to June 1997. Analysis of this exploratory study reveals major differences among the respondents with respect to academic achievement, orientation and educational and occupational aspirations. In addition, there are differences among the three groups in terms of their expectations of and responses to their experiences with perception of their adult opportunities, psychological well being and involvement with the law. Sikh teens are experiencing more favourable outcomes in terms of these variables and thus, appear to have good prospects for upward mobility compared to the Caribbean teens. Variation among the three groups is related primarily to differences in parental material and social capital and the size and resources of their ethnic communities. These findings are consistent with the theory of 'segmented assimilation ' proposed by Alejandro Portes, Ruben Rumbaut, Herbert Gans and others. According to the theory, how well second-generation racial minority children assimilate is directly dependent upon the extent to which their parents possess material resources (such as wealth and education) or social capital (cohesive and supportive family relations and norms and values which encourage academic achievement). In addition, these scholars argue that children who come from communities which are either well established (i.e. institutionally complete) or integrated are likely to face better prospects in the process of assimilation. While my data underscores in particular, data critical role of parental social capital and co-ethnic resources in youths' achievement, it has also modified the theory to include individual level characteristics such as motivation and religious involvement as well. Comparative studies which utilise random samples and survey data are needed to substantiate my work as well as to better understand the mechanisms by which ethnic and family resources contribute to favourable achievement outcomes among minority youths. In addition, future research should consider whether social capital created by institutional structures outside the family and community can offer similar benefits.
Sons of the wilderness, work, culture and identity among voyageurs in the Montreal fur trade, 1780-1821

French Canadian men, who worked as indentured servants in the Montreal fur trade in the 18th and 19th centuries, formed a distinct culture in the ' pays d'en haut'. Their culture was influenced by their habitant and Catholic roots, Natives peoples, and the circumstances of the fur trade. Voyageurs brought their language and religion into the 'pays d'en haut'. To survive the rigours of this new environment, they borrowed materials from Native peoples such as canoes, snowshoes, moccasins and pemmican, as well as values and beliefs. Emulating Native peoples, voyageurs sought to be skilled canoers, successful hunters, stoic in the face of hardship, and live with few possessions. Voyageurs worked under the hegemonic rule of their primarily British masters, and yet outnumbered them in the isolated "wilds". They engaged in a "theater of resistance" which included working slowly, stealing provisions, freetrading, and deserting the service, to pressure their masters for better working conditions. Canoes, strength, mirth, women, and freedom were key elements in voyageur culture. Voyageurs took pride in caring for their tools, such as canoes, but also dogs, horses, toboggans, and paddles. These had to be tough and strong, just like the voyageurs themselves, because they became symbols of a masculine ideal of strength, skill and hardiness. Voyageurs' collecting and possessions were kept to a minimum because of the high mobility of their jobs. In the ethic of nonaccumulation, alternative forms of symbolic, social and cultural capital became ways to measure masculine success. Taking risks, such as running rapids, and competing in canoe races, gambling, and boxing matches, provided ways to earn "masculine capital" and bolster their reputations. Play was a forum in which new social behaviours could emerge. Celebrations and rituals helped voyageurs form a unified culture in the face of centrifugal forces caused by the mobility of the job and the transience of individuals. The men were in constant passage through different geographical and social spaces, as they moved between Montreal and the 'pays d'en haut'. The liminality of the work place led to fluidity, inventiveness, and an openness to different cultural practices.
Polymer blend de-mixing and morphology development during tube flow

This work is an investigation of morphology and de-mixing of polymer blends during melt flow through a tube. Morphology is the relative size, shape and location of each distinguishable phase present in a polymer blend. De-mixing is the shear-induced migration of different types of polymers away from each other during the flow. Being able to tailor de-mixing during extrusion can potentially result in a new family of plastics waste recycling processes with mixed waste entering an extruder and separate streams of different polymer types leaving it. Also, control of morphology development can lead to the formation of layered structures without the need for two or more extruders and co-extrusion. These ideas formed the basis for a U.S. Patent. However, obtaining an understanding of the phenomena is critical to improving separations to a practical level. This thesis is directed at elucidating morphology development and de-mixing of polymer blends in the most simple process design: melt flow through a tube. The work had four objectives. The first was to design a process that would enable elucidation of both morphology and de-mixing along the tube. This was done by attaching a long segmented tube to a static mixer which in turn was attached to the end of a single screw extruder. At the conclusion of a run, the tube was quenched and disassembled to provide the needed samples. The second objective was to develop analytical methods to measure polymer composition in the samples. A mid-infrared spectrometer technique and a method based on the use of a differential scanning calorimeter were developed. The third objective was to use the above accomplishments to elucidate morphology development and polymer migration. Shear-induced migration was quantitatively shown in various polyethylene-polypropylene, polypropylene-nylon6 and polyethylene-nylon6 blends. The theoretical rate of viscous energy dissipation per unit length of the tube was used to show that the observed shear-induced migration was in accordance with the principle of energy minimization. The ratio of the viscosity of the dispersed phased to that of the continuous phase greatly influenced the morphology of polypropylene-nylon6 and polyethylene-nylon6 blends: a droplet-dispersed phase structure occurred at a high viscosity ratio whereas a multi-layer structure resulted at viscosity ratios near unity. Shear-induced deformation and coalescence contributed to formation of the multi-layer structure. Finally, the fourth objective was to investigate the effect of morphology development on viscosity measurement by capillary rheometry. The extruder-tube process was used as the rheometer. Morphology had a large impact on the value of the measured viscosity and viscosity-composition data were shown to be not readily fit by two mixing rule models: Lees' model and a sheath-core model. Greatly improved results were obtained by introducing a "shear-induced interlayer slip factor" into the sheath-core model.
To disclose, or not to disclose, a question for adult learners with learning disabilities

This research reports on adult learners with learning disabilities and their self-disclosure experiences within post-secondary educational settings. This qualitative investigation focused primarily on disclosure of their disability to professors, the factors related to the decision to disclose, and the management of the disclosure process. Participants were college/university graduates, or current college/university students, most of whom were studying at a senior level, thus ensuring that they had already had some time to accumulate experiences related to disclosure. The existence of a learning disability was validated using recent psycho-educational assessment results, or with a brief psycho-educational assessment administered by the researcher. Participants engaged in two in-depth dialogues with the researcher. In the second dialogue, each participant responded to the researcher's initial summary of the themes and patterns emerging from their individual, and the group's, initial dialogue. The thesis begins with an overview of the status of research focusing on adults with learning disabilities, research on disclosure, and the need for, and possible benefits of, an inquiry into the largely unexamined linkages between these areas of study. Little is known about how many adult learners with learning disabilities choose to disclose, how they determine the costs/benefits of revealing their disability, and, if disclosing, what skills are related to the management of this process. Disclosure at the post-secondary level was of particular interest since, unlike children, adult learners typically have control over whether or not to speak openly about their learning difficulties--a disability which, because it may be somewhat invisible, might be kept secret. The findings reveal an extensive and complex disclosure process, consisting of multiple levels of decision-making, all highly governed by context and an apparent concern about impression management.
Different brain loci mediate neuropeptide Y's effects on feeding vs. reward

There is a high co-prevalence of eating disorders mid substance abuse in humans. One theory offered to account for this relationship implicates a common biochemical substrate in the pathophysiology of both disorders. Neuropeptide Y (NPY), a 36 amino-acid peptide found throughout neurons of the central and peripheral nervous systems, may be one candidate serving both roles. NPY stimulates voracious feeding in previously satiated rats when injected into the perifornical hypothalamus (PFH). It also has rewarding effects when injected into the nucleus accumbens (N.Acc) as evidenced by its induction of conditioned place preference (CPP) learning. To clarify the anatomical specificity of NPY's role in mediating feeding and reward, the present dissertation examined the effects of PFH ' vs.' N.Acc injections of NPY on "regulatory feeding" (resulting from homeostatic need) 'vs.' "non-regulatory feeding" (due to rewarding properties of food) as well as other reward-related behaviours. Regulatory feeding was assessed by measuring intake of a non-preferred food, powdered lab chow, while non-regulatory feeding was assessed by measuring intake of a preferred food, sucrose. Other measures of reward were performance of a progressive ratio (PR) operant response for sucrose and CPP. The contribution of dopamine (DA) in mediating these NPY-site effects was also determined. NPY dose-dependently increased chow (Experiment These results indicate an anatomical dissociation between certain behavioural effects of NPY in the PFH 'vs.' the N.Acc. The PFH mediates NPY's effects on regulatory feeding but plays little, if any, role in reward-relevant behaviours. Conversely, NPY in the N.Acc supports reward-related but not intake-enhancing effects. Further support for this conclusion comes from findings that DA does not contribute significantly to NPY's regulatory feeding response in the PFH, while its mediation of NPY reward in the N.Acc appears to exist, but is not robust.
Speake that I may see thee, figures of rhetoric in Shakespeare's comedies

The purpose of my study is to look at Shakespeare's thirteen comedies through the lost lens of classical rhetoric: a lens that brings certain elements of the plays into sharp focus and allows us to share the perspective of Shakespeare's rhetorically trained audience members. The plays chosen for study include the thirteen comedies written between 1590 and 1604. In addition to examining the use of rhetorical figures within each comedy, I consider the changes in Shakespeare's use of rhetorical figures during the period when he was concentrating on comic form. The introduction addresses some of the problems inherent in rhetorical nomenclature, in figure classification, and in distinguishing between "artificial" and "natural" rhetoric. Chapter 1 examines three groups of figures that appear in every play, performing a wide range of tonal, descriptive, and characterizing tasks. The second chapter is a case study of the figure epithet: examining how Shakespeare used this device in each comedy gives a sense both of the dramatic usefulness of the device and of Shakespeare's rhetorical development during the fourteen years in which he was writing comedy. Chapter 3 focuses on one group of rhetorical devices, the vices of language, and examines the ways these devices serve to characterize certain Shakespearean clowns. The salient rhetorical traits of three specific comedies are studied in chapter 4, including the contrasting styles of rhetoric in 'Shrew' the use of anagogic metaphor in 'Dream' and the meaning of the titular proverb in 'All's Well'. Only one play is examined in detail. Chapter 5 consists of a rhetorical case study of 'The Merchant of Venice': it considers both the rhetorical patterns within the play and the ways in which those patterns reveal the shift in Shakespeare's rhetoric between his early and his late comedies. The final chapter explores the benefits of rhetorical training to twentieth-century Shakespearean actors. Since rhetorical self-consciousness has direct implications for performance, I believe the study of rhetoric is of interest not only to students and teachers of language, but also to theatre historians, directors, and actors.
Aging in Bermuda, an Examination of the Double Jeopardy Hypothesis

The data used in this analysis were collected in 1990 as part of the first representative social survey conducted on the needs of the Bermudian seniors. This study addresses the question of whether age and race have a negative interactive effect and influence the lives of Bermudian seniors with respect to financial status, health, life satisfaction and primary relations (size of networks). The research was conceptualized within the context of the double jeopardy hypothesis. The findings from this study reveal that there is differentiation in the socioeconomic status of seniors in Bermuda, however, education, not race plays a dominant role in predicting financial status (poverty levels). Nevertheless, Black Bermudian seniors are more likely to have lower levels of education and therefore, are more likely to live below the poverty line. The racial differences mirror Bermuda's historical legacy of institutionalized racism and consequently, class differences continue to exist into later life. In terms of health, life satisfaction and primary relations, age and race do not have a negative interactive effect on their outcomes. Bermudian seniors are somewhat distinctive, particularly in their health (higher levels) and their strong social ties (somewhat stronger and larger), but, otherwise they appear to be quite similar to seniors in other developed nations. The lack of support for the double jeopardy hypothesis in Bermuda is similar to studies reported in the United States and Great Britain on life satisfaction and primary relations.
Three-dimensional analysis of lenticular orebodies using displacement discontinuity elements

The most appropriate numerical techniques for the analysis and design of excavations, pillars and mining sequences in lenticular orebodies is the displacement discontinuity method (DDM). This thesis examines three important facets of the DDM and makes improvements in these areas that affect the efficiency of the method in its application to the crack-type problems, arising in the mining of lenticular or seam deposits. The introduction of the concept of node sharing between adjacent elements into the DDM, is the first aspect covered in the thesis. The node-sharing formulation of the DDM was made possible after the introduction of a new and unified framework for evaluating the singular boundary integrals that exist in the Green's functions of the displacement discontinuity method. The new integration method is based on the continuation approach. The formulation of a new displacement discontinuity element--the enhanced displacement discontinuity (EDD) element--was the second major undertaking of the thesis. This new formulation provides information on the in-plane (confinement) stresses in an element, something the conventional DDM does not consider. The EDD element creates an automated and more flexible way of modelling different degrees of confinement, expected to occur in unmined orebody zones ('i.e.' pillars and abutments). With the inclusion of confinement into the formulation of the enhanced DD element, it can be readily used to analyse yielding pillars, since all components of the stress tensor at a point in a material are explicitly taken into account. Finally, the thesis looked at the development of a methodology in the EDDM for modelling the post-peak behaviour of pillars. The progressive failure procedure was incorporated into the EDDM to create a program for simulating post-failure pillar response. The progressive failure procedure relies on a simple quasi-elastic constitutive relationship, and uncomplicated failure criteria to model failed pillar material.
Re-settling the bard, postcolonial parody in Canadian and Australian appropriations of Shakespeare

Until recently, postcolonial theory and criticism largely ignored Canada and Australia. Both colonized and colonizing, these predominantly white, Anglo-Celtic cultures were considered too ambivalent towards their imperial heritage to produce significant forms of literary resistance to it. But now ambivalence is recognized as inherent in the colonial experience, and scholars are reconsidering what can be learned from the former settler-invader colonies. Since rewriting canonical British authors has proved a popular form of resistance writing in non-settler Colonies, this study considers Canadian and Australian dramatic reworkings of Shakespeare, a cultural icon inseparable from British imperialism. Australia's struggles to develop both a national identity and a unique theatre culture reflect mixed feelings about the British colonial heritage: pro-empire sentiment, republicanism, deference to British cultural models, the assertion of Australian distinctiveness, pride in their pioneer history and guilt at their oppression of the Aborigines. Several dramatic "re-visionings" of Shakespeare reflect this ambivalent history. For example, Hewett's 'The Man From Mukinupin' recontextualizes ' The Tempest' to Australia, parodying Shakespeare's paradigm of colonialism to criticize Australia's bloody settlement history. In contrast, Williamson's ' Dead White Males' defends a traditional view of Shakespeare, and by extension, a reactionary white, British, male definition of Australia. Canada's position at the nexus of three empires has produced a highly regionalized culture with an anglophone population fearful of American and inclined to be "dutiful daughters" of the British Empire. Consequently, anglophone Canadian appropriations of Shakespeare are less overtly postcolonial and oppositional than Australian ones. However, some, like MacDonald's ' Goodnight Desdemona' ('Good Morning Juliet'), do explore Canada's postcolonial identity through identification with Shakespeare's female characters, who (like many Canadians) feel both privileged and In other Canadian plays, like Mitchell's 'Cruel Tears' or Gurik's 'Hamlet, prince du Quebec', Shakespeare is parodied to express regional culture and concerns. But Bond's 'Lear' shows how English playwrights, too, can parody Shakespeare to critique post-imperial Britain. Parody is a useful literary decolonization technique for settler-invader cultures: it maintains some connection to the British heritage, while allowing for critical distance from it and the celebration of local identities.