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UNB Scholar is an institutional repository initiative of UNB Libraries intended to collect, preserve, showcase, and promote the open access scholarly output of the UNB community. Use UNB Scholar to explore specific collections, or search all content in the repository. Material submitted to the repository will also be freely discoverable online through Google and other major search engines.
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Recent Submissions
Synchronous Rectification for High-Speed Resonant Wireless Power Transfer Under Variable Coupling and Load
(IEEE, 2025) Herpers, Christian; MacMillan, Matthew; Belliveau, Ethan T.; Rouse, Chris D.
A synchronous rectifier (SR) for efficient and compact wireless power transfer (WPT) in applications involving variable coupling, variable load, and lower voltages, e.g., 60 V or less, is presented. The proposed SR employs the load-independent class E topology and a relatively simple synchronization circuit based on a tuned delay line. Analytical, simulation, and experimental results are presented for SRs implemented in resonant capacitive power transfer systems operating at 13.56 and 27.12 MHz. Both systems exhibit load independence over transmission distance variations of ± 25% from nominal. At 13.56 MHz, 300 W is delivered with a dc-to-dc efficiency of approximately 81% at nominal coupling, which translates to an SR efficiency of 93%, and the system can deliver 220 W over the full coupling range. At 27.12 MHz, 150 W is delivered at a dc-to-dc efficiency of approximately 76% at nominal coupling, translating to an SR efficiency of 89%, and 110 W can be delivered over the full coupling range. The performance of the proposed SR for resonant WPT applications is very encouraging, particularly at 27.12 MHz
Patients’ and families’ perceptions of privacy of health information and data sharing in New Brunswick
(University of New Brunswick, 2024-12) Seeley, Joanna; Balcolm, Sarah; Durepos, Pam
Information sharing between different interoperable health databases is called health information exchange (HIE). Although the HIE of personal health information (PHI) can improve patient safety for Canadians, some provinces do not disclose PHI about patient safety incidents with federal and pan-Canadian patient safety surveillance systems. A frequently cited barrier to HIE by healthcare organizations is patients’ and families’ concerns for their privacy. This study, guided by qualitative descriptive design, explored patients’ and families’ perceptions of privacy and the secondary use of PHI collected, used, disclosed, and retained on patient safety events. Participants identified privacy criteria, conditions for the access of PHI, types of data for HIE, and the purpose of HIE. There is a significant opportunity for data custodians to use the research findings to create a patient-centric framework for the HIE of PHI.
Development of deep learning-based classification and unsupervised clustering methods for mineral mapping using remotely sensed hyperspectral data
(University of New Brunswick, 2024-12) Peyghambari, Sima; Zhang, Yun
Hyperspectral remotely sensed imagery is a powerful tool for mineral mapping. It captures detailed spectral information across hundreds of contiguous and narrow spectral bands to enable precise identification of various geological materials. Conventional methods mainly use shallow spectral absorption features to discriminate minerals and cannot extract their important spectral information. However, traditional methods face significant challenges in effectively handling hyperspectral data's high dimensionality, nonlinear spectral features, and low signal-to-noise ratio (SNR). These challenges limit the accuracy of traditional machine-learning algorithms in mapping the spectral variations of minerals.
This PhD research addresses these limitations through a comprehensive literature review and the development of new methods. It has resulted in two published journal papers and one submitted journal paper, presented across three chapters of this dissertation.
The third chapter of this dissertation (published review paper) provides an updated systematic overview of hyperspectral missions, diagnostic minerals' spectral properties, and various geologic information extraction techniques, including preprocessing, dimension reduction, endmember retrieval, and important image classification methods from spaceborne/airborne HSI. It evaluates the advantages and limitations of the existing conventional methods of processing HSIs with the aim of geological mapping.
The fourth chapter (published paper) aims to improve the accuracy of spectral-spatial deep learning extractors in classifying HSI datasets. While traditional deep learning methods such as fully connected neural networks (FCNN), convolutional neural networks (CNNs), and hybrid CNNs like mixed convolutions and covariance pooling (MCNN-CP) algorithms have shown promise, they face limitations in robustness and accuracy. This proposes an integrated 1D, 2D, and 3D CNN architecture to enhance the capability of spectral-spatial extractors, significantly improving classification accuracy and resilience.
The fifth chapter (submitted) explores deep learning-based clustering methods for unsupervised mineral mapping, which are valuable in remote areas where ground truth data is scarce. These methods leverage HSIs' high-dimensional and redundant spectral features, using advanced clustering techniques to generate accurate mineral maps without requiring extensive labelled data. This research proposes a hybrid 3D-2D convolutional autoencoder to capture HSI's spatial and spectral diversity.
The anticipated outcomes include enhanced accuracy and computational efficiency, ultimately improving the utility of HSI for geological studies and resource exploration.
foreglow
(University of New Brunswick, 2024-12) Johnson, Colin Uriah; Crawford, Lucas; Sinclair, Sue
foreglow is a long lyric poem investigating the intricate and often mercurial interplay between poetics, queer theory, and utopian potentiality. Over nine multi-register, hybrid genre sections, a menagerie of domestic and mundane scenes frame its critique of the human desire to impose order while acknowledging (and, yes, even longing for) the existential ambiguity that follows a collapse of spatiotemporal certainty. The poem resists stable narratives about desire as individual and collective histories intertwine with environmental and temporal dislocation, dissolving boundaries between internal reflection and external reality.
The critical introduction to foreglow posits that lyric poetry can function as a dynamic, ritualistic site of encounter that challenges traditional narrative authority and interprets individual subjectivity through a critical lens. Drawing on Jonathan Culler's concept of the "iterable now" and Anne Carson's insights on erotic paradox, the introduction examines how lyric poetry creates a temporality that simultaneously acknowledges and resists discrete ontological categories such as presence and absence. By integrating José Esteban Muñoz's notion of queer futurity, the project highlights how aesthetic practice can offer alternative modes of temporality and subjectivity that transcend linear narratives. Through a close reading of foreglow and its graphic codes, as well as comparative analyses with poets such as John Wieners and Cody-Rose Clevidence, the dissertation investigates how disidentificatory practices and the subversion of conventional poetics facilitate new forms of relationality and pleasure. The final section of the introduction considers Lisa Robertson's influence on foreglow, emphasizing how unconventional approaches to temporality and language contribute to the poem's exploration of utopian potentialities. This research underscores the potential of lyric poetry to both reflect and reshape the experiences of desire, subjectivity, and community.
The “drive-through province” problem: New Brunswick’s transit space tourism, 1929-1999
(University of New Brunswick, 2024-12) Cox, Sean Christopher; Mullally, Sasha
This dissertation examines New Brunswick’s multi-decade change from a destination space to a transit space for modern leisure motorists. New Brunswick’s recreational reputation as a rustic sporting destination was originally manufactured by provincial authorities in the late 19th and early 20th century. This successful marketing scheme failed to keep pace with popular tourism trends, however, especially as automobility reshaped consumer experiences of travel time and relationships to destination spaces. Modernizing automobility and expanding road systems compressed time-space across North America, and the small province of New Brunswick struggled to maintain a competitive tourism identity. In response to these forces, aggressive provincial investments to improve infrastructure and launch marketing campaigns reframed the province as an attractive location easily reached and enjoyed by car. While proactive and innovative, many of these efforts only temporarily relieved what I describe as the province’s “transit space problem.” New Brunswick’s complex tourism history has been overshadowed by the perception that it is largely a “drive-through province.” Yet, archival evidence demonstrates a long-developing transit space problem was neither inevitable nor passively accepted. As a contribution to the historiography of tourism, this dissertation captures a rare transit space case-study applicable beyond Atlantic Canada and demonstrates that even a “drive-through province” deserves sustained historical examination.