oURspace
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.
Please contact ourspace@uregina.ca if you have questions or want more information about oURspace.
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Recent Submissions
Utilizing Technical Data to Discover Similar Companies in Dhaka Stock Exchange
(arXiv, 2023-01-12) Muhammad, Tashreef; Aziz, Tahsin; Alam, Mohammad Shafiul
Stock market investment have been an ideal form of investment for many years. Investing capitals
smartly in stock market yields high profit returns. But there are many companies available in a market.
Currently there are more than 345 active companies who have stocks in Dhaka Stock Exchange
(DSE). Analyzing all these companies is quite impossible. However, many companies tend to move
together. This study aims at finding which companies in DSE have a close connection and move
alongside each other. By analyzing this relation, the investors and traders will be able to analyze a
lot of companies’ statistics from a calculating just a handful number of companies. The conducted
experiment yielded promising results. It was found that though the system was not given anything
other than technical data, it was able to identify companies that show domain specific outcomes.
In other words, a relation between technical data and fundamental data was discovered from the
conducted experiment.
The polyketide pathway in sporopollenin biosynthesis is specific to land plants (Embryophyta)
(BioRxiv, 2024-10-19) Sraan, Damanpreet K.; Ashton, Neil W.; Suh, Dae-Yeon
Background and Aims: Sporopollenin (SP) is a complex biopolymer in the outer wall of spores and pollen and provides protection from environmental stresses. Its extraordinary chemical resistance, especially to acetolysis, was widely used to identify SP in biological specimens. This broad definition of SP led to claims for its widespread occurrence among diverse embryophyte and non-embryophyte taxa. We previously proposed a biochemical definition that can be used to distinguish genuine SP from other chemically resistant cell wall materials. The definition was centred on ASCL (Anther-Specific Chalcone synthase-Like), an embryophyte-specific enzyme of the polyketide pathway that provides precursors for SP biosynthesis. Herein, we examine the evolution and distribution of all five enzymes (CYP703A, CYP704B, ACOS, ASCL and TKPR) of the polyketide pathway and propose a new, more comprehensive definition of SP.
Methods: We performed BLASTp searches, phylogenetic tree construction, protein modeling and sequence analysis to determine the presence or absence of ACOS and TKPR in embryophytes and streptophytic algae.
Key Results: We found evidence that all five enzymes of the polyketide pathway evolved from ancestral enzymes of primary metabolism and ACOS, ASCL and TKPR were co-selected during evolution. The dosage of all five genes has been subjected to strict evolutionary control and, in some taxa, synteny has provided a selective advantage. All five enzymes are present in embryophytes but absent in green algae, indicating that the polyketide pathway and therefore SP is embryophyte-specific.
Conclusions: The addition of the polyketide pathway in the definition of genuine SP will allow separation of SP from algaenans and other chemically resistant ‘SP-like’ algal spore wall substances. This study further signifies SP as an evolutionary innovation unique to the embryophyte lineage and encourages research on possible evolutionary relationship between algal spore wall ‘SP-like materials’ and embryophyte SP.
Competing Interest Statement
The authors have declared no competing interest.
A Systematic Review of Approaches Used to Interview Vulnerable Children
(University of Regina: Department of Psychology, 2024) Jason, Priyanka; Thompson, Kailey; Gerbeza, Matea; Bruer, Kaila C.
Between the North Pole and New York City
(Faculty of Media, Art, and Performance, University of Regina, 2004) Wihak, Mark
For more than thirty years, some of the most famous artists in the world traveled to a rustic camp beside a small lake in Northern Saskatchewan. Between the North Pole and New York City tells the story of how for five decades, Emma Lake was an important destination for leading artists from Canada, the United States, and Britain, and examines the impact the Emma Lake Artists' Workshops have had on the Canadian and International art world.
Resting Potential
(Faculty of Media, Art, and Performance, University of Regina, 2022-02-20) Wihak, Mark
Lucy experiences a fundamental change in her understanding of existence and struggles to find someone who will listen. If seeing, is believing, what happens when nobody believes what you've seen?
The film was initially released chapter by chapter. This version of the film has all nine chapters combined, with brief pauses between each chapter.