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Type d'Item : Item , Uneven Ground?: Exploring the Steve Smith Bike Park Pump Tracks as an Inclusive Leisure Space(Université d'Ottawa | University of Ottawa, 2026-10-20) Peterson, Britta; Giles, AudreyAs advocacy for inclusion has become more prevalent, there has been a growing expectation for leisure spaces to be welcoming and accessible to all populations. Concurrently, there has been a substantial increase in the development and use of pump tracks as urban leisure spaces. Pump tracks are bicycle riding surfaces designed as loops or multi-looped tracks consisting of rollers and berms. Creators of promotional materials for pump track builds and contributors to online forums have identified pump tracks as sustainable and inclusive leisure spaces for diverse user groups. Yet, despite their popularity and proliferation, no empirical research has been published about pump tracks, who uses them, and why. Exploring claims of inclusion must be conducted with members of equity-owed populations. As such, I conducted 34 interviews with self-identifying Indigenous and newcomer Peoples (Indigenous = 10, newcomer = 16) and pump track planners, builders, and leisure professionals (n = 8), and over six months of participant observation at the Steve Smith Bike Park pump tracks. I addressed three topics in three separate papers in this dissertation. First, I explored my observations of what inclusion did (or did not) look like at the Steve Smith Bike Park. Second, I explored Indigenous Peoples’ relationship(s) to the pump tracks at the Steve Smith Bike Park, which is located on Snuneymuxw First Nation ancestral and unceded territory. Third, I explored newcomers’ experiences of inclusion at the pump tracks at the Steve Smith Bike Park. I used intersectional and settler colonial theories to inform my approaches to this research and conducted reflexive thematic analysis in all three papers. Within the first study, I asserted that while the pump tracks at the Steve Smith Bike Park were observed to facilitate inclusion for some individuals of various ages, genders, and skill levels, they are not inherently inclusive by design. Ultimately, I argued that meaningful inclusion requires an intersectional approach, involving constant effort and ongoing attention. In the second study, participants expressed concerns of limited representation and engagement of and with Indigenous Peoples at the pump tracks, noting a reflection of broader settler colonial structures within the space. Interestingly, participants simultaneously described the pump tracks as sites of resistance and resurgence, where embodied, land-based practices asserted Indigenous presence and (re)defined the space. In the third study, participants underscored that factors including language, migration history, and cultural background intersected to shape their engagement with and at the Steve Smith Bike Park. Importantly, a significant barrier to participants’ engagement at the pump tracks identified was not how to participate, but rather the awareness that participation was possible, pointing to an overarching gap in leisure education and participation services. Collectively, I argue that inclusion at the Steve Smith Bike Park is neither neutral nor guaranteed but is experienced as negotiated and uneven, and shaped by intersecting identities and power relations, including settler colonial logics, racism, and classism. Overall, my research underscores the need for ongoing, intersectional and decolonial approaches to the design and implementation of pump tracks.Type d'Item : Item , Designing Subwavelength Grating Devices for the AlGaAs-on-insulator Platform(Université d'Ottawa | University of Ottawa, 2026-10-20) Mousavi Karimi, Fatemeh Sadat; Dolgaleva, KseniaThe first demonstration of subwavelength grating (SWG) waveguides on the silicon-on-insulator (SOI) platform has led to the emergence of several SWG devices in silicon photonics. These devices, which include waveguides, couplers, sensors, and ring resonators to name a few, leverage the refractive index and dispersion engineering inherent to SWG waveguides to enhance their performance. Despite the demonstrated success of SWG waveguides in silicon photonics, these engineering techniques have yet to be widely used in combination with III-V semiconductors which are already extensively used for laser sources and nonlinear applications. Thus, the focus of this study is using aluminum gallium arsenide on insulator (AlGaAs-OI) to design subwavelength grating devices. In this thesis, I present the design and computational simulation of subwavelength grating photonic components utilizing the Al0.18Ga0.82As-OI platform, while also reporting on nonlinear optical experiments conducted with novel Huygens’ meta-waveguide SOI resonators. The effective medium theory, Finite-Difference Eigenmode (FDE), and Finite-Difference Time-Domain (FDTD) methods were used for calculating the photonic band-structure and dispersion characteristics of the SWG unit-cells. Using these methods, low-loss SWG waveguides were optimized for different core heights and cladding materials, achieving Floquet-Bloch mode propagation with minimal to no backscattering. Building upon these waveguides, and by exploiting the refractive index engineering inherent to SWG structures, an ultra-compact 30 μm-long fiber-to-chip AlGaAs-OI SWG edge coupler was designed with a peak coupling efficiency of 90.2% (−0.45 dB loss) at 1550 nm for quasi-TE modes. Furthermore, AlGaAs-OI SWG microring resonators were investigated, demonstrating that a hybrid SWG-bus/solid-core ring geometry can leverage mode delocalization to relax coupling gaps while maintaining sufficient coupling and a high quality factor (Q > 75, 000) at 1550 nm. Finally, I report the first physical observation of stimulated four-wave mixing (FWM) in a prefabricated SOI Huygens’ meta-waveguide microring resonator. This work highlights the potential of AlGaAs-OI subwavelength engineered structures as promising building blocks for monolithically integrated, low-loss, and highly efficient linear and nonlinear photonic integrated circuits.Type d'Item : Item , Music Creation as a Tool for Postpartum Mothers(Université d'Ottawa | University of Ottawa, 2026-10-20) LeMieux, Sarah; Pedneault-Deslauriers, JulieThis dissertation uses Artistic Practice as Research to investigate the potential use of music creation as a tool for mothers with postpartum depression (PPD), incorporating my own experiences as a composer and mother with PPD through retrospective autoethnography, and culminating in the creation of a new music composition. To inform this work, I conducted an analysis of research into music-based therapies for postpartum depression, which revealed gaps, as well as inconsistent use of terms and practices. This dissertation argues that active music creation deserves further study as a distinct form of music-based intervention and identifies maternal self-efficacy and functional connectivity as pathways for further investigation. I developed a method of teaching music creation to postpartum mothers, combining principles of Neurologic Music Therapy, music pedagogy, and compositional practices, and conducted an exploratory case study with one mother. Using the same method, I created a new musical piece to process and artistically communicate my own past experiences with PPD. By investigating interdisciplinary connections between neuroscience, pedagogy, and artistic practice, this dissertation explores a music creation-based therapeutic approach centered on maternal lived experience, and identifies directions for future empirical research.Type d'Item : Item , Equipping the next generation: addressing the unmet need for artificial intelligence education at research performing organizations(2026-10-16) Ng, Jeremy Y.; Al-Khafaji, Wid A.; Moher, DavidAbstract Background The integration of generative artificial intelligence (GenAI) tools into higher education is rapidly accelerating, yet the educational ecosystem appears largely unprepared for the scale and speed of adoption. Our recent international survey of over 1,200 university students and postdoctoral fellows in the medical and life sciences found that while more than 80% had used GenAI tools, the vast majority had received no formal training, and many were unaware of any institutional policies governing their use. This gap between adoption and institutional preparedness may pose risks to research integrity if left unaddressed. Main body Existing research supports a coordinated, evidence-informed approach to AI education in research performing organizations (RPOs), grounded in principles of research integrity, equity, and critical engagement with technology. First, GenAI literacy must be embedded as a core competency in scientific and clinical education, equipping students to critically evaluate tool outputs, recognize hallucination and bias, and understand the distinction between AI-generated inaccuracy and deliberate research misconduct. Second, traditional frameworks for academic integrity would benefit from re-examination. Today, GenAI tools have fundamentally disrupted established notions of authorship, originality, and plagiarism, and the absence of coherent institutional guidance leaves students and educators navigating these questions without support. Third, RPOs must develop clear, transparent, and context-sensitive policies on GenAI use by embedding responsible AI education into curricula, equipping learners not only to use these tools effectively, but to question, verify, and critique their outputs in ways that uphold scientific standards. Conclusion RPOs have an urgent responsibility to move beyond reactive responses and toward proactive strategies that uphold scientific standards, promote equity of access, and prepare the next generation of researchers and clinicians to engage with GenAI responsibly and ethically.Type d'Item : Item , Performance status and outcomes in patients with cancer receiving thromboprophylaxis: a subanalysis of the AVERT trial(2026-07-22) Potere, Nicola; Xu, Yan; Mallick, Ranjeeta; Wang, Tzu-Fei; Hill, Danny; Lazo-Langner, Alejandro; Tagalakis, Vicky; Shivakumar, Sudeep; Di Nisio, Marcello; Wells, Philip S.; Carrier, MarcAbstract Background The Eastern Cooperative Oncology Group Performance Status (ECOG-PS) is central to cancer care planning and prognostication. Whether ECOG-PS also carries prognostic value in the setting of primary thromboprophylaxis for cancer-associated venous thromboembolism (VTE) remains unknown. Objectives To evaluate the impact of ECOG-PS on clinical outcomes in ambulatory patients with cancer initiating chemotherapy. Methods This was a post-hoc analysis of the AVERT randomized controlled trial that evaluated apixaban (2.5 mg twice daily) for thromboprophylaxis in patients at intermediate-to-high VTE risk. Multivariable survival models assessed the association between ECOG-PS (0–1 versus 2–3) and the composite primary outcome of VTE or clinically relevant bleeding (CRB), as well as its individual components and all-cause mortality, over 180 days. Results Of 428 patients included, 368 (86.0%) and 60 (14.0%) had an ECOG-PS of 0–1 and 2–3, respectively. The primary composite outcome occurred in 12.8% (n = 47) in those with ECOG 0–1 and 18.3% (n = 11) with ECOG-PS 2–3 (6-month cumulative incidence: 13.0% [95% CI: 9.8%–16.7%] versus 19.9% [95% CI: 10.5%–31.4%], respectively). Worse performance status was associated with higher risks for the composite outcome (aHR: 1.76; 95% CI: 1.14–2.72; p = 0.011), CRB (aHR: 1.58; 95%CI: 1.53–1.63; p < 0.0001), and all-cause mortality (aHR: 5.77; 95% CI: 4.98–6.67; p < 0.0001). In exploratory treatment-effect analyses, apixaban reduced VTE risk across ECOG-PS strata, including among participants with ECOG-PS 2–3, without clear evidence of excess CRB in this subgroup. Conclusions ECOG-PS predicts VTE-related outcomes in ambulatory patients with cancer and may inform individualized, value-based shared decision-making regarding anticoagulant thromboprophylaxis. Graphical Abstract