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University of Regina Institutional Repository

The mission of the oURspace digital repository is to share and preserve the scholarly, creative, and cultural work produced at the University of Regina.

What are some of the benefits of depositing your works in oURspace?

Increased access to your scholarly publications.
Content is indexed and discoverable in Google Scholar.
Compliance with open access funding requirements.
Long term preservation of your work.

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Now showing 1 - 6 of 6

Recent Submissions

Access status: Open Access ,
Archer Library Annual Report 2024-25
(University of Regina Library, 2025-12-22) Dr. John Archer Library and Archives, University of Regina
One of the significant events celebrated in this year's Annual Report is the (re)-gifting by Brad McNaughton of the University's leather crest that proudly hung in Darke Hall in the early years of Regina College. As you will see, the crest has had journeys known and unknown that took it far afield before coming home to the University Archives. In many ways, the crest represents all of us. No matter how we became part of the University of Regina family - whether we grew up as part of its extended community, came into it as students, or committed to expanding knowledge, learning, and research as new faculty and staff members - we all have stories about how the U of R has woven its way through our lives. But no matter how far we travel in our lives and careers, there is always a need to return home - to celebrate our successes, to share our memories, to inspire a love of learning in a new generation, and just to relax in a (mostly) familiar place. The Dr. John Archer Library and Archives encapsulates all this. In these pages you will see many successes, more than a few memories, a definite love of learning, and a welcoming place that is always looking towards something new and exciting. Thank you for being part of our family. We could not have built this home without you.
Access status: Open Access ,
Evaluating the Before Operational Stress on-demand asynchronous online training for public safety and healthcare personnel
(Elsevier BV, 2025-12) Ioachim, Gabriela; Bolt, Nicole; Bélanger, Kathy; Shulhin, Andrii; Dabhoya, Jilani; Khoury, Juliana M.B.; Teckchandani, Taylor A.; Shields, Robyn E.; Maguire, Kirby; Carleton, R. Nicholas
Public safety personnel (PSP) experience frequent exposures to potentially psychologically traumatic events, increasing their likelihood of developing several mental health disorders. The Before Operational Stress (BOS) program was designed as a proactive psychological intervention to build resilience and improve interpersonal relationships among Canadian PSP. Previous mixed-methods evaluations of the BOS program evidenced small but statistically significant improvements associated with BOS Intensive (in-person) training. A new delivery modality was developed to provide asynchronous online access to program content (i.e., BOS On-Demand) to improve accessibility.
Access status: Open Access ,
Effects of temporal and spatial variability in energy fluxes on phytoplankton
(Wiley, 2025-11-18) Zhou, Jian; Huang, Changchun; Lü, Guonian; Shi, Kun; Leavitt, Peter R.
Climate change has significantly altered the energy dynamics of lakes; however, little is known of how the temporal and spatial variation in energy fluxes impacts the structure and function of lake ecosystems. This study combined long-term (2011–2018) measurements of lake energy fluxes with environmental, nutrient, and phytoplankton data at five stations to investigate the effects of variably energy fluxes on phytoplankton production and composition in a large, shallow, eutrophic lake (Lake Taihu, China). Overall, atmospheric warming increased heat storage and water temperatures, with energy fluxes exhibiting significant spatial heterogeneity. Specifically, faster rates of energy input and higher energy budgets increases were observed in the clear macrophyte-rich regions of the lake compared to turbid hypereutrophic habitats. Temporal variation in energy fluxes was a strong predictor of primary production (as chlorophyll a), the spatial extent of cyanobacterial blooms, and phytoplankton biodiversity at the whole-lake level, whereas 42.4% of the variation in phytoplankton community composition was explained by a combination of energy fluxes, nutrients, and other environmental factors. Cyanobacterial taxa were significantly correlated with nutrients (total nitrogen and phosphorus), while green algal abundance was associated mainly with variations in the energy budget. These findings highlight the spatial variability of energy fluxes driven by local environmental conditions, underscoring the need for climate adaptation and mitigation strategies to account for heterogeneous energy effects on lake production and structure.
Access status: Open Access ,
Optimization of waste management regions using recursive Thiessen polygons
(Elsevier BV, 2019-10) Richter, Amy; Ng, Kelvin T.W.; Karimi, Nima; Wu, Peng; Kashani, Armin Hajighasem
Geographic Information Systems (GIS) are commonly employed to solve problems related to landfill siting and optimization of waste collection. This research aims to develop an easily implementable tool to optimize the topology of waste management regions in various Canadian jurisdictions using ArcGIS ModelBuilder. Landfill count, populated places, and road length are minimized using standard deviation to determine optimized tessellations. In Nova Scotia, reductions in standard deviation of 9.6 – 30.4% are observed between original and optimized tessellations. The results suggest that an optimized tessellation of Nova Scotia’s Federal subdivisions may perform better than that of their waste management regions. In Saskatchewan, reductions in standard deviation of 4.9 – 46.1% were observed between original and optimized tessellations. Considering all Saskatchewan Federal Subdivisions, no optimization occurred. However, partitions of Saskatchewan Federal Subdivisions yielded better results, with vertical partitions yielding a 30% decrease in standard deviation of roads, while landfills and population were reduced in the horizontal subdivision by 20.0% and 38.0%, respectively. This suggests that a different approach may be required for waste management regions in Northern Saskatchewan. Saskatchewan transportation planning committees regions had the highest standard deviation across all parameters, and optimized at the fourth iteration (landfills and populated places), and first iterations (roads), despite the fact that this tessellation was developed in direct relation to roads in the province. The proposed tool, however, showed a limited application in the City of Regina given that land use planning within City limits. This work will improve the data driven aspect of regional waste management system design.
Access status: Open Access ,
Interactions of residential waste composition and collection truck compartment design on GIS route optimization
(Elsevier BV, 2020-02) Vu, Hoang Lan; Ng, Kelvin Tsun Wai; Fallah, Bahareh; Richter, Amy; Kabir, Golam
Waste collection is an important functional element in a modern waste management system; and may account for up to half of the total expenditure on waste management in industrialized nations. Most optimization of waste collection studies include truck route distance and fuel consumption considerations without explicitly considering the inter-relationships of the model parameters. This study however delineates the complex inter-relationships of waste composition, collection frequency, collection type, and truck compartment configurations in a small waste collection zone in Austin, Texas. A total of 48 different scenarios are modelled and investigated. Truck travel distances are found sensitive to collection frequency, truck capacity, volume ratio of truck compartment, and waste density. The results showed that the increase in waste density and waste collection frequency helped to save up to 18.2% in travel distances and 41.9% in travel time. Waste composition is significant in travel distance, regardless of truck design. Increasing truck capacity by 25% helped to save 4.1% to 24.4% of truck travel distances. Optimal volume ratio of truck compartments was 50:50 (50% volume for garbage and 50% volume for recyclables); a finding that is different than what is currently reported in the literature; pointing to the site-specific nature of studies of this type. The use of dual compartment trucks helps to reduce travel distances by up to 23.0% and travel time by up to 14.3%. It appears that the minimization of operation time within the collection area is key to an efficient system.