Laurentian University

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    Landscapes of conversion: the evolution of the residential school sites at Wiikwemkoong and Spanish, Ontario

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    This thesis explores the history of the Society of Jesus and its efforts at missionary work from the 17th century in New France to the 20th century in Canada and the use of architecture and landscape development to settle and convert Indigenous peoples into Euro-Christian communities. The Jesuits focused on using Indigenous children to aid in the conversion of Indigenous societies and their efforts resulted in the residential school complexes of the 19th and 20th century in the villages of Wiikwemkoong and Spanish, Ontario. Using illustrations, photographs and written descriptions of former student experiences the atmosphere of the physical environments in Spanish are depicted. The ambitious land and architecture strategies of the Society contributed to the failure of the Spanish Indian Residential Schools. The thesis concludes with a discussion regarding the former sites of the Jesuit residential schools in Northern Ontario and the current discourse on Canadian residential school buildings and sites in the media

    Psychopathy and alcohol abuse in relation to the recidivism of sexual offenders

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    The abuse of alcohol is a fundamental component to consider when assessing the risk of reoffending in sexual offenders. Previous research with sexual offenders has demonstrated that being diagnosed with an alcohol use disorder almost doubles their chance of reoffending. While there has been much research on alcoholism and sexual offenders, there remains a gap in literature considering the impact of alcohol abuse and drug abuse with psychopathic sexual offenders. A review article briefly indicated that elevated scores on the Michigan Alcohol Screening Test (MAST) might moderate the Hare Psychopathy Checklist-Revised (PCL-R) ability to predict recidivism. No, follow up study was discovered to observe further results. The current study evaluated the impact of these findings using a long-term recidivism database collected in the Ontario Region of Correction Service Canada (CSC). The database included over 500 high-risk sexual offenders from the Regional Treatment Center, Sex Offender Treatment Program (RTCSOTP). The database contained information on men, over 18 years of age, who had served at least two years in custody for a sexual offense. The PCL-R, MAST, and DAST were utilized to measure psychopathy, alcohol abuse, and drug abuse, respectively. A Cox regression analysis revealed that the PCL-R and the DAST were significant predictors of sexual and violent recidivism, but the MAST was not a significant predictor of sexual and violent recidivism. The MAST did not impact the PCL-R’s capability of predicting recidivism in a moderate to high-risk sample, as previously observed. While the result of non-significant MAST prediction was contrary to previous findings, these results indicate that targeting drug abuse should continue to be a component in sexual offender treatment programs. Alcohol abuse cannot be excluded definitively from the study of recidivism

    Leading competitor masters athletes: identities and the road to success

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    This project sought to explore identities used by leading competitor master level runners in order for them to continue down the road of success. The following research question was explored: How do leading competitor masters level long distance runners describe their life as a runner, in relation to today, and the context they are training in? The participants were three leading competitor master level athletes (age 50+), who all reside in Sudbury, Ontario. Artefacts brought the project to a deeper level. An inductive thematic analysis was carried out. Themes and sub-themes highlighted specific ways each masters’ athlete navigated their running journey to allow them to maintain their competitiveness as a leading competitor. In conclusion, the study discussed the importance of the athletic identity: how it functioned, shifted, and changed over time to allow the athletes to navigate their other identities and go through processes such as identity management

    Real-time static gesture detection using machine learning

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    Sign gesture recognition is an important problem in human-computer interaction with significant societal influence. However, it is a very complicated task, since sign gestures are naturally deformable objects. Gesture recognition contains unsolved problems for the last two decades, such as low accuracy or low speed, and despite many proposed methods, no perfect result has been found to explain these unsolved problems. In this thesis, we suggest a machine learning approach to translating sign gesture language into text. In this study, we have introduced a self-generated image data set for American Sign Language (ASL). This dataset is a collection of 36 characters containing alphabets A to Z and numeric digits 0 to 9. The proposed system can recognize static gestures. This system can learn and classify specific sign gesture of any person. We used a convolutional neural network (CNN) algorithm for the classification of the images to text. An accuracy of 99.00% was achieved on the alphabet gestures and 100% accuracy on digits

    A framework to develop a hybrid methodology for modeling of diesel particulate matter concentration in underground mine ventilation systems

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    The purpose of this research is to develop a hybrid methodology for diesel particulate matter (DPM) modeling for underground mine ventilation systems. The hybrid methodology, which is an enhanced and complementary tool, is proposed to provide improved diesel input to a ventilation network solver by using a computational fluid dynamics (CFD) solver. The hybrid methodology uses the DPM results from a calibrated CFD model to update those from a network model at shared locations. A CFD approach for simulating DPM over an extended period has been proposed to make the hybrid methodology more adaptable to large ventilation systems. With the proposed CFD modeling approach, contaminants like DPM can be modeled accurately in a timely manner over an extended period of time. The results from this approach are then used to update the network model results at the shared outlets. The workflow to update DPM results from the network model using the calibrated CFD model is presented. Two field studies were conducted in an underground mine in the western United States. Due to the low quality airflow and DPM data collected from the field, this study should be viewed as a qualitative study rather than a quantitative study. Corresponding CFD models, ventilation network models, and updated ventilation models were also established, and results from these models were compared with the experimental data. The limitations for both the instruments and the methodology were defined as well

    Le systéme d’encadrement pédagogique des futurs enseignants d’eps: une lecture de la gestion des rétroactions des inspections pédagogiques à l’injeps/Bénin

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    Le but de cette recherche est d’analyser le système d’encadrement pédagogique des étudiants en Sciences et Techniques des Activités Physiques et Sportives (STAPS) en formation initiale à l’Institut National de la Jeunesse, de l’Éducation Physique et des Sports (INJEPS) lors de leurs stages dans des établissements d’enseignement secondaire. À partir d’une grille de lecture composée du modèle systémique du processus d’intervention de Dunkin et Biddle (1974) et celui de Chevallard (1992), cette étude problématise d’une part, le fait didactique à partir des variables de contexte, de programme, de processus et de produit, et d’autre part du concept de praxéologie. Par ailleurs, elle cherche aussi à comprendre les variables déterminantes au processus de supervision pédagogique et la manière dont l’INJEPS gère les feedbacks produits par les superviseurs pédagogiques de l’INJEPS et de la Direction de l’Inspection Pédagogique. Il ressort, de l’analyse des résultats des investigations, que les superviseurs pédagogiques des deux institutions mettent essentiellement l’accent sur les variables de contexte, de processus et de produit lors de l’encadrement pédagogique des stagiaires de 3ème , 4ème et 5ème année, alors que les variables de programme aussi sont prises en compte en 1ère et 2ème année. A l’issue des supervisions, seules les notes de stage produites par les rapports pédagogiques des superviseurs sont prises en compte par l’administration lors des évaluations partielles et terminales des étudiants. Aucun traitement didactique des contenus des feedbacks n’est fait dans la perspective d’améliorer la formation pédagogique des futurs enseignants

    Planting the seeds: envisioning an academic pathway for Indigenous students in rural Northern Ontario

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    My research examined how Indigenous students chose their post-secondary educational academic pathway, specifically the timing, type and amount information Indigenous students had prior to being enrolled in undergraduate and graduate programs at Laurentian University, Sudbury, Ontario. This study utilized an Indigenous research methodology and quantitative method with a few qualitative questions using REDCap online survey. The research found that while current Laurentian Indigenous students had multiple pathways prior to enrollment at the university level, the results also found that earlier outreach might one of the strategies to closing the educational attainment gap between Indigenous and non-Indigenous students at the postsecondary level. The study also revealed a need for Laurentian University to form close relationships with Indigenous communities in Northern Ontario to allow potential future students a way of envisioning the benefits and opportunities of their education pathway

    Assessing the extent of local assimilation within the Platreef, Northern Limb of the Bushveld Igneous Complex, using sulfur isotopes and trace element geochemistry

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    The proximity to metasedimentary footwall units in the Northern Limb of the Bushveld Igneous Complex (BIC) has resulted in a complex local contamination of in this maficultramafic intrusive body, including the units containing platinum group element (PGE) mineralization. To assess the extent of incorporation of non-magmatic material and its effects on PGE mineralization, geochemical and isotopic data were collected from drill core UMT094 on the Turfspruit project, where core logging has shown a clear macroscopic division between mineralization and local footwall contamination. The S isotopic data combined with whole rock geochemistry data (including CaO/Al2O3, V/Ti, Ni/Cr, S/Se, LOI) present substantial evidence to assess the range of incorporation of local footwall material. A δ34SVCDT profile shows a steady decrease from the footwall assimilation zone (δ34S = +8 ‰) to near constant δ34S values (δ34S < +4 ‰) below mineralization. Through PGE mineralization, the δ34S data converge to the range that has been documented for the Merensky Reef in the Eastern and Western Limbs of the BIC (δ34S: ~ 0 to +3 ‰). Other geochemical parameters through mineralization, such as S/Se and CaO/Al2O3, also match the ranges documented for the Merensky Reef. In addition, parameters such as whole rock V/Ti are shown to be useful indicators of the type of contaminant (e.g. V/Ti > 2 for intervals assimilating shales and V/Ti < 1 for intervals assimilating carbonates; 1 < V/Ti < 2 for uncontaminated magmatic units). The results indicate that there is negligible local contamination through mineralization and that the primary mechanism of PGE mineralization in the Platreef was no different than the mechanism that generated the Merensky Reef in the Eastern and Western limbs of the BIC

    Volcanic reconstruction of the paleoproterozoic powderhouse formation, Snow Lake, Manitoba, Canada: implications for controls on volcanogenic massive sulfide formation

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    The Powderhouse formation of the Paleoproterozoic Snow Lake arc assemblage comprises the stratigraphic footwall to six volcanogenic massive sulfide deposits (VMS) at Snow Lake, Manitoba, Canada. It is interpreted to be a product of voluminous pyroclastic eruptions and concomitant subsidence followed by a period of relative volcanic quiescence that was dominated by suspension sedimentation, the reworking of these previously deposited pyroclastic units by debris flows and bottom currents, and localized emplacement of rhyolite domes. The rhyolite domes are spatially associated with the Chisel, Chisel North, Lost, Ghost, Photo and Lalor deposits. The Chisel, Lalor and Lost members comprise the Powderhouse formation and are subdivided into thirteen lithologically and chemically distinct lithofacies and allows, for the first time, correlation between the South Chisel basin and Lalor area. The Chisel and Lalor members contain lithofacies and bedforms that are characteristic of emplacement by subaqueous pyroclastic mass flows and concomitant subsidence. The Chisel member also contains coarse volcaniclastic breccias emplaced by mass debris flows derived from movement along fault scarps after early pyroclastic eruptions, and during continued subsidence. The Lost member consists of lithofacies deposited by mass flows generated from faults scraps during continued subsidence, but also contains lithofacies reworked by bottom currents and those deposited by suspension sedimentation, and locally coherent rhyolite. The Lost member represents a time stratigraphic interval, the “Ore Interval”, that marks contemporaneous rhyolite dome eruption, VMS formation, and a hiatus in explosive volcanism

    Emplacement of sharp-walled sulphide veins during reactivation of impact-related structures at the Broken Hammer Mine, Sudbury, Ontario

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    Broken Hammer is a hybrid, Cu-Ni-Platinum Group Element (PGE) footwall deposit in the North Range of the ca. 1.85 Ga Sudbury impact structure. The sulphide vein system and associated low sulphide PGE mineralization were mined as an open pit operation over a 15-month period, providing a unique opportunity to study a complete 90-meter vertical section across a footwall deposit. The deposit is hosted within Archean basement rocks and impact-induced Sudbury breccia, 1.5 km north of the Sudbury Igneous Complex (SIC) – basement contact. The low sulphide mineralization consists of disseminated to blebby chalcopyrite (<5%), minor pyrite, chalcocite, galena, sphalerite and platinum group minerals, associated with Ni-bearing chlorite overprinting alteration patches of epidote, actinolite and quartz. The veins comprise massive chalcopyrite and minor magnetite, chalcocite, millerite, and rare sperrylite, surrounded by thin epidote, actinolite and quartz selvedges. They are grouped into five, steeply-dipping, NE-, SW-, SE-, S- and EWstriking sets, which intersect in a common line controlling the plunge (60°) and trend (220°) of ore shoots. The veins were emplaced along syn-impact fractures that were reactivated multiple times during stabilization of the impact crater floor. Early reactivation of the fractures created pathways for the migration of hydrothermal fluids from which quartz and chlorite precipitated sealing the fractures. Renewed slip and reactivation shattered the quartz-chlorite veins into fragments that were incorporated in massive sulphide veins that crystallized from strongly fractionated sulphide melts or high temperature (400°C-500°C) hydrothermal fluids which migrated outward into the basement rocks from a cooling and crystallizing impact melt sheet represented by the SIC. Hydrothermal fluids syn-genetic with the epidote-actinolite-quartz alteration distributed the PGE into the footwall rocks, or late hydrothermal fluids associated with the Ni-bearing chlorite leached Ni and PGM’s from the sulphide veins and re-distributed them within the footwall rocks, forming the low-sulphide high-PGE mineralization. During post-impact tectonic events, reactivation and slip at temperatures below the brittle-ductile transition for chalcopyrite (<200°C-250°C) produced striations along the vein margins. The Broken Hammer deposit exemplifies how Cu-Ni-PGE footwall deposits formed by the reactivation of syn-impact fractures that provided conduits for the migration of melts and hydrothermal fluids

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