309 results
Search Results
2. A new quantitative drug checking technology for harm reduction: Pilot study in Vancouver, Canada using paper spray mass spectrometry.
- Author
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Borden, Scott A., Saatchi, Armin, Vandergrift, Gregory W., Palaty, Jan, Lysyshyn, Mark, and Gill, Chris G.
- Subjects
- *
MASS spectrometry , *HARM reduction , *PILOT projects , *OPIOID epidemic - Abstract
Introduction: Drug checking services for harm reduction and overdose prevention have been implemented in many jurisdictions as a public health intervention in response to the opioid overdose crisis. This study demonstrates the first on‐site use of paper spray mass spectrometry for quantitative drug checking to address the limitations of current on‐site drug testing technologies. Methods: Paper spray mass spectrometry was used to provide on‐site drug checking services at a supervised consumption site in the Downtown Eastside of Vancouver, British Columbia, Canada during a 2‐day pilot test in August 2019. The method included the targeted quantitative measurement of 49 drugs and an untargeted full scan to assist in identifying unknown/unexpected components. Results: During the pilot, 113 samples were submitted for analysis, with 88 (78%) containing the client expected substance. Fentanyl was detected in 45 of 59 expected fentanyl samples, and in 50 (44%) samples overall at a median concentration of 3.6% (w/w%). The synthetic precursor of fentanyl, 4‐anilino‐N‐phenethyl‐piperidine (4‐ANPP), was found in 74.0% of all fentanyl samples at a median concentration of 2.2%, suggesting widespread poor manufacturing practices. Etizolam was detected in 10 submitted samples anticipated to be fentanyl at a median concentration of 2.5%. No clients submitting these samples expected etizolam or a benzodiazepine in their sample. In three instances, it was co‐measured with fentanyl, and in seven cases it was detected alone. Discussion and Conclusions: The quantitative capabilities and low detection limits demonstrated by paper spray mass spectrometry offer distinct benefits over existing on‐site drug checking methods and harm reduction services. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
3. University of British Columbia Reports Findings in Campylobacter jejuni (An Integrated Paper Microfluidic Device Based on Isothermal Amplification for Simple Sample-to-Answer Detection of Campylobacter jejuni).
- Subjects
CAMPYLOBACTER jejuni ,MICROFLUIDIC devices ,CHICKEN as food ,FOODBORNE diseases ,GRAM-negative bacteria ,MICROBIAL ecology - Published
- 2023
4. Evaluating the Strength of Local Legislative Frameworks to Protect Farmland: City of Richmond and Metro Vancouver, British Columbia.
- Author
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Connell, David J.
- Subjects
LOCAL government - Abstract
Copyright of Journal of Planning Education & Research is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
5. Academic Writing in An English for Specific Purpose Context: A Japanese Perspective.
- Author
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Heffernan, Neil
- Subjects
ACADEMIC discourse ,FOREIGN study ,SATISFACTION ,SECONDARY research ,CURRICULUM - Abstract
This paper outlines an academic writing course that was taught in Japan to 100 students who took the course as a precursor to a study abroad program at the University of British Columbia (UBC), Vancouver, Canada. The steps taken to ensure that the students would be properly prepared for their academic life in Canada and their study abroad experience as a whole are also delineated. The results demonstrate that upon returning from an 8-month stay in Vancouver, the students showed a dramatic improvement in their writing abilities. Indeed, they displayed not only high writing abilities, but the ability to maintain solid grades in their other courses during their time in Canada. Finally, overall enjoyment of the course was deemed to be extremely high, further adding to the students' satisfaction with the program. [ABSTRACT FROM AUTHOR]
- Published
- 2023
6. Erased, Displaced, Misplaced: Reclaiming [Chinese Canadian] National Identity through Co-op Radio.
- Author
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Wong, Rachel
- Subjects
RADIO programs ,GROUP identity ,NATIONAL character ,MULTICULTURALISM ,COALITIONS - Abstract
This paper explores some of the conversations currently taking place within Asian Canadian studies as they relate to coalitional spaces and community building. Specifically, I look at a co-op radio program from Vancouver called Pender Guy which aired in the 1970s. The members of Pender Guy were comprised of artists and activists from the Asian Canadian community attempting to establish and solidify their own collective identity during a time when minority communities and people of color were often sidelined or else considered as "surplus" to a national narrative that privileged Anglo- and Franco-Canadian identities. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
7. University of British Columbia Reports Findings in Salmonella enterica (Polyethersulfone-Based Microfluidic Device Integrated with DNA Extraction on Paper and Recombinase Polymerase Amplification for the Detection of Salmonella enterica).
- Subjects
SALMONELLA enterica ,MICROFLUIDIC devices ,SALMONELLA detection ,POLYETHERSULFONE ,RECOMBINASES ,FOODBORNE diseases - Abstract
Vancouver, Canada, North and Central America, Enterobacteriaceae, Enzymes and Coenzymes, Foodborne Diseases and Conditions, Gammaproteobacteria, Genetics, Gram-Negative Bacteria, Gram-Negative Facultatively Anaerobic Rods, Polymerase, Proteobacteria, Recombinases, Salmonella, Salmonella enterica Keywords: Vancouver; Canada; North and Central America; Enterobacteriaceae; Enzymes and Coenzymes; Foodborne Diseases and Conditions; Gammaproteobacteria; Genetics; Gram-Negative Bacteria; Gram-Negative Facultatively Anaerobic Rods; Polymerase; Proteobacteria; Recombinases; Salmonella; Salmonella enterica EN Vancouver Canada North and Central America Enterobacteriaceae Enzymes and Coenzymes Foodborne Diseases and Conditions Gammaproteobacteria Genetics Gram-Negative Bacteria Gram-Negative Facultatively Anaerobic Rods Polymerase Proteobacteria Recombinases Salmonella Salmonella enterica 367 367 1 06/12/23 20230615 NES 230615 2023 JUN 15 (NewsRx) -- By a News Reporter-Staff News Editor at Food Weekly News -- New research on Gram-Negative Bacteria - Salmonella enterica is the subject of a report. [Extracted from the article]
- Published
- 2023
8. Increasing knowledge and trust to overcome barriers to green infrastructure implementation: a Vancouver case study.
- Author
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Jang, Nicole and Doyon, Andréanne
- Subjects
- *
GREEN infrastructure , *CITIES & towns , *SEMI-structured interviews , *PRODUCTION planning - Abstract
This paper presents a case study of the obstacles to green infrastructure implementation in the City of Vancouver. This case study has two aims, 1) to better understand the planning and decision-making processes hindering the widespread implementation of green infrastructure across the City of Vancouver, and 2) propose solutions to facilitate the uptake of GI. This paper begins by reviewing existing literature on barriers to green infrastructure implementation. Then, it investigates current perceptions of GI in the City of Vancouver, and what barriers exist to its implementation through document analysis and semi-structured interviews. Proposed solutions to green infrastructure implementation are reviewed and recommendations are provided for the City of Vancouver. It ends with a short discussion on the applicability of lessons learned from the study of Vancouver for other municipalities seeking to overcome barriers to green infrastructure implementation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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9. BORDERING AN INDUSTRY: KVOS-TV AND CANAWEST FILM PRODUCTIONS IN THE PACIFIC NORTHWEST.
- Author
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Erickson, Mary
- Subjects
FILMMAKING ,AUDIOVISUAL materials ,TELEVISION stations ,TELEVISION viewers ,TAX deductions - Abstract
In 1953, Bellingham's KVOS-TV aired its first broadcast--Queen Elizabeth II's coronation--to audiences in northwest Washington State and southwest British Columbia. KVOS was the second television station in Washington and the first in British Columbia. As the station--and the popularity of television--grew, KVOS turned a persistent focus to attracting television audiences in the Vancouver metropolitan region and Vancouver Island. The station established a subsidiary in Vancouver in 1960 to produce commercials for local Canadian advertisers. This subsidiary grew into a full-fledged film production studio, Canawest Film Productions, which produced commercials, industrial films and animation for clients on both sides of the border. For a brief period, KVOS and Canawest fostered a unique relationship among an American broadcaster, Canadian and American advertisers, and cross-border audiences. Canawest was shuttered in 1977 after the Canadian legislature passed Bill C-58, ending tax deductions for Canadian companies advertising on American TV stations. This paper gives insight into the cross-border design of KVOS as well as Canawest's role in producing audiovisual material in the 1960s and 1970s. In doing so, this paper reflects on the tensions between culture and economics in the face of financial incentive and policy intervention. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
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10. Planning use values or values-based planning? "Rolling with" neoliberal flood risk governance in Vancouver, Canada.
- Author
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Oulahen, Greg and Ventura, Jacob
- Subjects
FLOOD risk ,FLOOD warning systems ,NEOLIBERALISM ,PUBLIC spaces ,LABOR theory of value ,LAND use ,REAL property sales & prices - Abstract
Neoliberal flood risk governance has become the norm in Canada and much of the rest of the global North in the interest, hypothetically, of achieving so-called efficiencies and resilience and, practically, out of desperation for access to any more resources to face a growing burden. This paper traces the path toward a flood risk governance model in Vancouver together with the development history of the city to illustrate the coproduction of urban landscape, capital, and flood risk. It situates what is intended to be a progressive "values-based" local adaptation planning program within that context to question whether or not such a program can elevate the use value of land. The paper demonstrates that a flood risk governance model further entrenches neoliberal hegemony and exchange values, with implications for urban space and how city inhabitants interact with flood hazards that are beyond the reach of values-based planning. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
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11. Strategic Collaborative Planning for Urban Liveability: A Comparative Review of Metropolitan Area Case Studies.
- Author
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Zanudin, Khalid, Wikantiyoso, Respati, Bidin, Zafikha Aida, and Rashid, Mohamad Fadhli
- Subjects
URBAN planning ,METROPOLITAN areas ,STRATEGIC planning ,CITIES & towns ,COMMUNITY involvement ,SELF-efficacy - Abstract
The issue of urban liveability has been extensively debated by global agencies and scholars, as evidenced by the New Urban Agenda, in response to the impact of urbanisation. Urban liveability pertains to the ability of urban communities to achieve a high-quality living environment. While participatory planning is often presented as a means of empowering communities to attain better living conditions, it has presented challenges for decision-makers. Furthermore, dominant actors often influence participation processes, benefiting certain community segments. As a result, collaborative planning has emerged as an approach that seeks to address the interests of multiple urban factors by promoting consensus in decision-making. This paper aims to examine the collaborative planning methods that have been used in strategic planning that have empowered the community to participate in the planning process. Content analysis was employed as a research method to explore the empirical evidence of collaborative planning that has successfully empowered community participation in strategic planning and its impact on the liveability of metropolitan areas. Correspondingly, the Melbourne, Vancouver, and Helsinki case studies were selected based on five liveable city indices. This study's findings suggest a positive correlation between the implementation of collaborative planning by the selected metropolitan areas and their status as the most liveable cities. This paper contributes to the ongoing debate on the role of collaborative planning in promoting urban liveability. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
12. Supply chain inefficiencies: the causes and costs of dry bulk ships anchored in Vancouver.
- Author
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Heaver, Trevor and Atkins, Derek
- Subjects
REVERSE logistics ,GRAIN trade ,COMMODITY futures ,ANCHORAGE ,SHIPS ,TIME management - Abstract
The paper describes the contracting and logistics conditions contributing to the level of anchorage in the grain, coal and fertiliser export trades of Vancouver. Increases in the level of anchorage in these trades have created economic, environmental and governance issues. Comparison of the logistics structures and practices in these commodity trades gives insights into the reasons for different levels of anchorage. Conditions in and data from the port of Vancouver are used to simulate conditions in the grain trade and to demonstrate the critical importance of the variability of ship loading times to levels of anchorage. The incidence of the costs of anchorage is examined. The terms in voyage charterparties used in the grain trade are found to inhibit efficient use of vessel time. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
13. Replacing Settler Spaces: The Transformational Power of Indigenous Public Art.
- Author
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Smetzer, Megan A.
- Subjects
INDIGENOUS art ,PUBLIC art ,CRUISE ships ,STEAMBOATS - Abstract
Similar to 19th-century steamship travel, 21st-century cruise ships link far-flung communities for visitors to the Pacific Northwest Coast. Contemporary Indigenous artists, like their ancestors before them, have transformed touristic curiosity into economic, educational and cultural opportunities for their communities. Public art has become an increasingly important site for engaging visitors who have only a few hours to spend on shore. This paper compares two public art projects—Juneau, Alaska's Kootéeyaa Deiyí (Totem Pole Trail) and Vancouver, British Columbia's Blanketing the City—to explore the multivalent ways in which public art expresses Indigenous sovereignty. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. Need for shelter, demand for housing, desire for home: a psychoanalytic reading of home-making in Vancouver.
- Author
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Pohl, Lucas, Genz, Carolin, Helbrecht, Ilse, and Dobrusskin, Janina
- Subjects
HOUSING ,ONTOLOGICAL security ,PSYCHOANALYSTS - Abstract
Home is often dually conceptualized as a physical space of living and a psycho-social place of belonging. To engage with this dual nature of home, housing scholars refer to the concept of ontological security to understand how different forms of housing affect subjective well-being. This paper extends the scope of this research. Developing a framework inspired by the psychoanalyst Jacques Lacan, we aim to understand what kind of psycho-spatial arrangements of home-making are involved in establishing ontological security. Based on empirical research in Vancouver, BC, Canada, we suggest three modalities involved in home-making: the need for shelter as the most basic psychic relation to survival, the demand for housing as a psycho-social arrangement with the Other, and the desire for home as a psycho-spatial constitution in the fantasy. Through this, the paper calls for a deeper understanding of how the subject is inscribed actively and dynamically into their social and built environment. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
15. Professionalization of Chinese medicine practice in Canada: from medical pluralism to neo-orientalism.
- Author
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Islam, Md. Nazrul
- Subjects
CHINESE medicine ,INTEGRATIVE medicine ,CHINESE people ,PROFESSIONALIZATION ,PROFIT maximization - Abstract
Chinese medicine came to Canada during the twentieth century in the hands of ethnic Chinese immigrants. This paper investigates the key features of professionalized Chinese medicine practice in the city of Vancouver, which lies in the Canadian province of British Columbia. The methodology adopted for this research involved face-to-face interviews with practitioners and the scrutinizing of webpages of various institutes and clinics offering Chinese medical services. In order to comply with regulatory requirements, the practice of Chinese medicine has been professionalized according to western biomedicine, ignoring the historical development and cultural connotations of this ancient system of health and wellness. Many practitioners in Vancouver do not speak Chinese, share Chinese culture, and have never been to China. The education and service delivery under Chinese medicine specialties have focused exclusively on curative care and have disregarded the preventive and moral regimen. A consumer class has developed across the city and the holistic content of Chinese medicine has become a selling point. This paper concludes that the commodified version of Chinese medicine that has so far been developed in Vancouver as part of its professionalization echoes neo-orientalism. The West has intervened in the formalization process of Chinese medicine practice, justifying authority through the process of non-disputed inclusion. This is, however, an ahistorical proponent fulfilling new age desires and contaminating eastern healing in the west for profit maximization. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
16. Governance matters: Regulating ride hailing platforms in Canada's largest city‐regions.
- Author
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Tabascio, Alexander and Brail, Shauna
- Subjects
HAIL ,RIDESHARING services ,TRANSPORTATION planning ,METROPOLITAN areas ,TRANSPORTATION policy ,PROVINCIAL governments ,REGIONAL planning - Abstract
Copyright of Canadian Geographer is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
17. A literary geography of the sinthome: the case of Sherlock Holmes and The Stormy Petrels of British Columbia.
- Author
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Kingsbury, Paul
- Subjects
PETRELS ,GEOGRAPHY ,SOCIAL space ,SEMI-structured interviews ,PARTICIPANT observation ,SOUVENIRS (Keepsakes) - Abstract
Copyright of Social & Cultural Geography is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
18. Platforms and/as urban communication: Mediums, content, context.
- Author
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Leszczynski, Agnieszka
- Subjects
PUBLIC spaces ,CITIES & towns ,BUILT environment ,STREET signs ,SIGNAGE ,USER-generated content - Abstract
This paper brings an urban communication lens to bear on the geographies of platformisation in cities. It does so by drawing on three select instances of platformised materialities in Toronto and Vancouver that represent familiar contours of urban platformisation: mobility (bike and car sharing), last‐mile logistics (on‐demand delivery), and labour (gig work). These examples are worked through Aiello and Tosoni's heuristic of cities as constituting the mediums, content, and contexts of urban communication, respectively. As mediums, platformised materialities in the form of street signs designate exclusive uses of public space by mobility platforms, communicating the spatial conditions of platform urbanism. As the contents of communication, stickers and signs advertising on‐demand meal delivery available at a restaurant venue express the platform‐driven transformation of the social relations that make the delivered meal take place. And as context, broader trends of the platformisation of labour render communication by other, non‐platform‐based materialities – such as posters calling on urban gig workers to unionise – meaningful. An urban communication perspective contributes to geographical scholarship on platform urbanism by nuancing our understandings of how platforms and platform technology capital secure and sustain themselves in cities through their material communicative capacities. Platforms have established themselves as visible fixtures of urban built environments. The physical forms that platforms assume in cityscapes constitute the mediums, content, and contexts of urban communication. Engaging platforms as expressing material communicative capacities nuances our understanding of how platforms and platform technology capital secure and sustain themselves in cities. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
19. Heterogeneous multi-task Gaussian Cox processes.
- Author
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Zhou, Feng, Kong, Quyu, Deng, Zhijie, He, Fengxiang, Cui, Peng, and Zhu, Jun
- Subjects
GAUSSIAN processes ,POINT processes ,NONPARAMETRIC estimation ,DATA augmentation ,PARAMETER estimation ,BAYESIAN field theory ,INFORMATION sharing - Abstract
This paper presents a novel extension of multi-task Gaussian Cox processes for modeling multiple heterogeneous correlated tasks jointly, e.g., classification and regression, via multi-output Gaussian processes (MOGP). A MOGP prior over the parameters of the dedicated likelihoods for classification, regression and point process tasks can facilitate sharing of information between heterogeneous tasks, while allowing for nonparametric parameter estimation. To circumvent the non-conjugate Bayesian inference in the MOGP modulated heterogeneous multi-task framework, we employ the data augmentation technique and derive a mean-field approximation to realize closed-form iterative updates for estimating model parameters. We demonstrate the performance and inference on both 1D synthetic data as well as 2D urban data of Vancouver. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
20. Seismic Design of CLT Shear-Wall and Glulam Moment-Resisting Frame Coupled Structure.
- Author
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Teweldebrhan, Biniam Tekle and Tesfamariam, Solomon
- Subjects
EARTHQUAKE resistant design ,STRUCTURAL frames ,TENDONS (Prestressed concrete) ,STEEL framing ,BEAM-column joints ,GROUND motion ,WOODEN beams ,SUSTAINABLE construction ,SEISMIC response - Abstract
In response to the increasing need for sustainable construction materials, numerous innovative timber-based structural systems have been developed in the past two decades. While timber-based shear-walls are popular, moment-resisting timber frames have received less attention in recent studies. However, with the availability of ductile and resilient beam-column joints (BCJs), timber frames can now be effectively used either independently or in combination with others. This study explores the feasibility of a dual system, consisting of cross-laminated timber (CLT) balloon shear-wall and glulam moment-resisting frame (CLTW-GMRF), and investigates the potential interaction between the two systems under seismic loading. The building features ductile and energy-dissipative BCJs and hold-downs. A seismic design procedure, based on a targeted moment proportion (MP) between the two systems, is presented and applied on a 10-story building. The building is assumed to be located in Vancouver, Canada, and its seismic performance is examined using 30 ground motion records in OpenSees. The system's efficiency with respect to engineering demand parameters is studied under different wall-to-frame MP values (50%–50% and 60%–40%) and ductility-related modification factors (2, 3, and 4). The study also investigates the system's performance with two BCJs and hold-down alternatives with bilinear hysteretic and self-centering energy-dissipative responses. Given the availability of resilient connections, the result highlights that the CLTW-GMRF coupled system is a viable alternative for high-rise hybrid timber construction. Moreover, the system's performance has significantly improved by using self-centering energy-dissipative systems. This paper unveils an innovative design approach and practical application for a CLTW-GMRF dual system. This innovative system incorporates energy-dissipative components that are designed and tested in existing literature: (1) the utilization of replaceable steel damper BCJs and buckling-restrained brace hold-downs, providing high ductility with large energy-dissipative capacity; and (2) the employment of hybrid BCJs made up of post-tensioned tendons and mild steel dissipators, along with hybrid brace hold-downs made up of pretensioned tendons and friction surfaces, which reduce residual deformations following seismic events. Utilizing these systems, the research introduces a versatile seismic design method congruent with existing codes and design standards, while offering flexibility through adjustable wall-to-frame moment proportions. The research also underlines the need for careful consideration of the interaction within the timber wall-frame systems. The implications are substantial amidst the growing trend of high-rise timber construction, aiming to fully exploit the potential of CLT and Glulam frames. Moreover, the research has the potential to serve as an essential resource for engineers aiming to optimize the sustainability and resilience of timber structures, particularly in seismic-prone regions. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
21. Vancouver type B2 periprosthetic femoral fractures: clinical and radiological outcomes from a tertiary care center.
- Author
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Tornago, Stefano, Cavagnaro, Luca, Mosconi, Lorenzo, Chiarlone, Francesco, Zanirato, Andrea, Patroniti, Nicolò, and Formica, Matteo
- Subjects
PERIPROSTHETIC fractures ,FEMORAL fractures ,TERTIARY care ,HEMIARTHROPLASTY ,FRACTURE healing ,REOPERATION - Abstract
Introduction: The purpose of this study was to report mid-term clinical and radiographic results after hip arthroplasty revision in Vancouver type B2 femoral periprosthetic fractures (PPFx). Specifical focus of the paper is as follows: (1) the description of a standardized and reproducible surgical technique, (2) functional outcomes presentation and (3) type and number of complications and implants' survival rate analysis. Methods: We retrospectively reviewed all patients treated for hip revision with non-modular tapered fluted titanium stem in patients with Vancouver type B2 femur PPFx at a single institution. At least 18 months' follow-up period was required. Harris Hip Scores and SF-12 were obtained, and radiographical follow-up was performed. Complications were reported and analyzed. Results: The authors included 114 patients (114 hips) with a mean follow-up of 62.8 ± 30.6 months. All patients were treated with Wagner SL revision hip stem (Zimmer-Biomet), metal cerclage wires ± trochanteric plate. The mean HHS and SF-12 score at the last follow-up evaluation were respectively 81.3 ± 9.7 and 32.5 ± 7.6. Seventeen (14.9%) complications occurred. We observed five cases of dislocations, two of periprosthetic joint infections and six cases of new PPFx. The stem-related revision rate for any cause at the final FU was 1.7%, due to PJI. No patients underwent stem revision surgery for aseptic loosening. Fracture healed in all the included patients with a union-rate of 100%. The re-operation rate for any cause was 9.6%, with an implant survival rate for overall failure of 96.5%. Conclusion: The presented standard and reproducible surgical technique obtains optimal clinical and radiological results with limited complication rate at mid-term follow up. Preoperative planning as well as careful intraoperative surgical technique is of a paramount importance. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
22. Knowledge Repatriation: A Pilot Project about Making Cedar Root Baskets.
- Author
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Fortney, Sharon M.
- Subjects
CAPACITY building ,REPATRIATION ,PILOT projects ,CEDAR ,LANGUAGE revival ,CULTURAL maintenance - Abstract
This paper describes the first phase of a Coast Salish Knowledge Repatriation Project being coordinated by the Curator of Indigenous Collections and Engagement at the Museum of Vancouver, within the unceded, ancestral territories of the xʷməθkʷəýəm (Musqueam), Sḵwx̱wú7mesh (Squamish), and səlilwətaɬ (Tsleil-Waututh) nations. The goal of this knowledge repatriation work is to support cultural revitalization and language renewal through activities that generate learning opportunities for community members. These activities pivot around knowledge that has been lost due to urbanization, forced assimilation efforts, and other colonial activities that may have restricted access to traditional lands and resources, preventing knowledge transmission. This work is about shifting the focus from extractive projects, that benefit external audiences, to one that supports capacity building and cultural renewal within communities. This essay describes a project to reintroduce coiled cedar root basketry into communities within the Greater Vancouver area in the province of British Columbia, Canada. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
23. Unbuilding the city: Deconstruction and the circular economy in Vancouver.
- Author
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Lynch, Nicholas
- Subjects
CIRCULAR economy ,DECONSTRUCTION ,BUILT environment ,URBANIZATION ,DEMOLITION ,GREEN technology - Abstract
Globally, the construction, renovation, and demolition sectors are increasingly responsible for growing resource demand and structural waste, even given progress in energy efficient technologies, 'green' building design, and local planning regulations. In response, the Circular Economy has become a popular agenda in the construction, renovation, and demolition sector as it offers a new model that not only maximizes materials reuse and recovery but also reframes urban systems and the built environment in a closed-loop (cradle-to-cradle) paradigm. In particular, popular visions of the Circular Economy promote, among other actions, 'optimizing' the end-of-the-life of buildings and their materials. Deconstruction (i.e. piece-by-piece demolition) is one key optimization strategy that has received increasing, yet limited, attention by researchers. This paper traces the development of an incipient deconstruction sector in Vancouver, focusing on the possibilities and challenges of deconstruction and material recovery practices as viable strategies for a transformative Circular Economy. I investigate two related aspects: first, the emerging policy landscape surrounding green demolition, and second, the development of 'unbuilding' practices and more formal 'Deconstruction Hubs'. Overall, the paper finds that while these developments represent fundamental steps towards a more sustainable built environment, there remain a number of significant social, political and economic limitations that must be confronted if we are to meet the growing demands for more radical sustainability and 'circularity' not only in Canadian construction, renovation, and demolition sectors, but across Canadian cities and beyond. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
24. Predicting population displacements after earthquakes.
- Author
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Costa, Rodrigo, Haukaas, Terje, and Chang, Stephanie E.
- Subjects
EARTHQUAKES ,PUBLIC shelters ,POLITICAL refugees ,SOCIAL networks ,HOUSEHOLDS ,EMERGENCY management - Abstract
An agent-based object-oriented model for household displacements is presented and used to analyze household decision-making after a hypothetical earthquake in the City of Vancouver, Canada. Temporary displacements and permanent relocation are accounted for. The model for households include considerations of socioeconomic demographics, social networks, and disaster preparedness. The analysis results indicate that nearly 70,000 persons are expected to be displaced by the earthquake. Of those, close to 19,000 will need public sheltering. In addition, nearly 40,000 persons are expected to relocate in the years following the earthquake. Among the displaced persons, occupants of multi-family pre-code and low-code buildings are over-represented. Among those needing public shelter or relocation, there is a disproportionately high number of renters and low-income households. The models in this paper can help the development of pre-disaster plans by suggesting optimal location of public shelters, and by identifying decisions that reduce the number of households relocating. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
25. Wayson Choy.
- Author
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Means, Richard
- Subjects
EDUCATION of Chinese Canadians ,CANADIAN authors -- 20th century -- Biography ,CREATIVE writing - Abstract
A biography of Canadian poet and writer Wayson Choy is presented. He was born on April 20, 1939 in Vancouver, British Columbia. Choy studied creative writing at the University of British Columbia. He published his first novel "The Jade Peony" in 1995. His critically acclaimed memoir "Paper Shadows: A Chinatown Childhood" is mentioned.
- Published
- 2023
26. Seismic Performance and Collapse Fragility of Balloon-Framed CLT School Building.
- Author
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Pan, Yuxin, Shahnewaz, Md, and Tannert, Thomas
- Subjects
SCHOOL buildings ,GROUND motion ,THREE-dimensional modeling ,SUBDUCTION ,FINITE element method - Abstract
Most previous research on seismic performance of cross-laminated timber (CLT) structures focused on platform-type construction. This paper investigates the seismic performance and collapse risk of a balloon-framed CLT school building, designed for Vancouver, Canada. Incremental dynamic analysis was performed using a three-dimensional numerical model. Experimental data from connection- and wall-level tests were used to calibrate and validate the model. Twenty-one ground motions (crustal, subduction inslab, and interface) were selected. The results showed the building well met the 2% design drift limit. It had 4.2% probability of collapse at design level by considering uncertainties with a collapse margin ratio of 3.18. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
27. Photobiomodulation and Orthodontic Treatment with Clear Aligners: A Case Report of Severe Crowding and Agenesis.
- Author
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Fani, Eda, Coli, Giulia, Messina, Andrea, Sampalmieri, Francesco, Bambini, Fabrizio, and Memè, Lucia
- Subjects
ORTHODONTIC appliances ,CORRECTIVE orthodontics ,PHOTOBIOMODULATION therapy ,ENERGY density ,MALOCCLUSION - Abstract
This paper aims to demonstrate the effectiveness of photobiomodulation in accelerating orthodontic treatment with clear aligners in correcting an orthodontic malocclusion characterized by severe crowding and agenesis in an adult subject. An adult male patient with Class I malocclusion, a mild Class III skeletal base and severe crowding was treated with 88 Invisalign
® (Align Technology, Santa Clara, CA, USA) pairs of aligners replaced every 5 days in combination with an Orthopulse™ (Biolux Research, Vancouver, BC, Canada) photobiomodulation device for home use by the patient. The total orthodontic treatment time was 440 days. Orthopulse™ is a photobiomodulation device that generates continuous beams of near-infrared light (NIR—near-infrared) with a wavelength of 850 nm and a power of 42 mW/cm2 to produce an average energy density on the surface of the silicone impression of 9.3 J/cm2 . The combined use of clear aligners and the Orthopulse™ device allowed the patient to replace the aligners according to an experimental 5-day protocol to speed up the orthodontic therapy and, thus, resolve the malocclusion in less time than the manufacturer's standard. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
28. ANN-Based Method for Urban Canopy Temperature Prediction and Building Energy Simulation with Urban Heat Island Effect in Consideration.
- Author
-
Tariku, Fitsum and Gharib Mombeni, Afshin
- Subjects
URBAN heat islands ,ENERGY consumption of buildings ,EFFECT of earthquakes on buildings ,THERMAL comfort ,BUILT environment ,CITIES & towns - Abstract
The process of urbanization resulting from population growth is causing a transformation of natural landscapes into built environments, and contributing to a significant rise in air and surface temperatures in urban areas, resulting in what is known as the urban heat island (UHI). Ignoring the UHI effect and use of weather data from open fields and airport locations for energy and thermal comfort analysis can lead to over- and underestimation of heating and cooling loads, improper sizing of equipment, inefficiencies in the mechanical systems operation, and occupants' thermal discomfort. There is a need for computationally efficient urban canopy temperature prediction models that account for the urban morphology and characteristics of the study area. This paper presents the development and application of an artificial neural network (ANN)-based method for generating hourly urban canopy temperature and local wind speed for energy simulation. It was used to predict the urban canopy temperature of a neighborhood in downtown Vancouver and the resulting building energy consumption and indoor temperature in a typical building in the area. The results showed that the UHI effect increased the total cooling energy demand by 23% and decreased the total heating energy consumption by 29%, resulting in an overall negative effect on the total energy demand of the building, which was 18% higher in the urban area. The UHI effect also increased the number of hours of indoor temperature above the cooling set point by 7.6%. The methodology can be applied to determine the urban canopy temperature of neighborhoods in different climate zones and determine the varying urban heat island effects associated with the locations. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
29. Abandoning the SRO: Public Health Withdrawal from Sanitary Enforcement in Vancouver's Downtown Eastside.
- Author
-
Masuda, Jeffrey
- Subjects
HISTORY of public health ,PUBLIC health ,HOUSING policy ,HISTORY of colonies ,CENTRAL business districts - Abstract
This paper situates a ten-year period of political upheaval in addressing the problem of Single Room Occupancy (SRO) housing in Vancouver, Canada, within an epistemic transformation of public health. Until 1970, the Vancouver Health Department exemplified a colonial history of public health in establishing the city's skid road as a cordon sanitaire. But the 1970s saw a sudden fading of the Department's authority just as a more collaborative approach to housing policy was emerging. The sunsetting of sanitary enforcement was driven in part by the arrival of a "new public health" that became primarily concerned with defining public health problems and solutions through the regulation of racialized bodies and behaviors—a cordon thérapeutique. By the 1980s, this shift constituted an epistemic and regulatory abandonment of SRO housing, leading to the accelerated deterioration of the entire housing stock and costing incalculable human suffering and the loss of lives. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
30. African Immigrant Nurses in Vancouver, Canada.
- Author
-
Kihika, Maureen
- Subjects
ANTI-Black racism ,BLACK people ,MIDDLE class ,NURSES ,RACE ,SOCIAL classes ,INTERGENERATIONAL mobility - Abstract
Copyright of Anthropologica is the property of CASCA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
31. Growth management for low-carbon development patterns – leverages in state planning enabling legislation.
- Author
-
Heinen, Deborah
- Subjects
CENTRAL economic planning ,LAND use ,METROPOLITAN areas ,LEGISLATORS - Abstract
This study systematically compares how new growth is directed to the urbanized area in the metropolitan regions of Seattle (USA), Vancouver (Canada), and Stuttgart (Germany). This study is based on a review of planning documents and qualitative interviews with planners at the local, county, regional, and state level. This paper focusses on how the state legislation for land use governance shapes the ability to direct growth to locations favorable from a climate perspective. State legislators, particularly, have a crucial role in drafting overarching rules that enable regional, county, and local decision-makers to work together on directing growth in metropolitan areas. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
32. Implementation of a nurse-led overdose prevention site in a hospital setting: lessons learned from St. Paul's Hospital, Vancouver, Canada.
- Author
-
Dogherty, Elizabeth, Patterson, Carlin, Gagnon, Marilou, Harrison, Scott, Chase, Jocelyn, Boerstler, Jill, Gibson, Jennifer, Gill, Sam, Nolan, Seonaid, and Ryan, Andy
- Subjects
DRUG overdose ,DRUG abuse ,HOSPITALS ,COVID-19 pandemic - Abstract
Objectives: In May 2018, St. Paul's Hospital (SPH) in Vancouver (Canada) opened an outdoor peer-led overdose prevention site (OPS) operated in partnership with Vancouver Coastal Health and RainCity Housing. At the end of 2020, the partnered OPS moved to a new location, which created a gap in service for SPH inpatients and outpatients. To address this gap, which was magnified by the COVID-19 pandemic, SPH opened a nurse-led OPS in February 2021. This paper describes the steps leading to the implementation of the nurse-led OPS, its impact, and lessons learned. Methods: Four steps paved the way for the opening of the OPS: (1) identifying the problem, (2) seeking ethics guidance, (3) adapting policies and practices, and (4) supporting and training staff. Results: The OPS is open between 10:00 and 20:00 and staffed by two nurses per shift. It is accessible to all patients including inpatients, patients in the Emergency Department, and patients attending outpatient services. Between February 1, 2021 and October 23, 2021, the OPS recorded 1612 visits for the purpose of injection, for an average weekly visit number of 42. A total of 46 overdoses were recorded in that 9-month period. Thirty-seven (80%) required administration of naloxone and 12 (26%) required a code blue response. Conclusions: Due to the unique nature of our OPS, we learned many important lessons in the process leading to the opening of the site and the months that followed. We conclude the paper with lessons learned grouped into six main categories, namely engagement, communication, access, staff education and support, data collection, and safety. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
33. The love of nature: Imaginary environments and the production of ontological security in postnatural times.
- Author
-
Pohl, Lucas and Helbrecht, Ilse
- Subjects
ONTOLOGICAL security ,COLLECTIVE consciousness ,SOCIAL reality ,EVERYDAY life ,WELL-being - Abstract
The existence of nature is vehemently called into question in the Anthropocene. The standard image of nature as a pristine, harmonious, and stable background no longer holds, especially as ecological changes increasingly penetrate the collective consciousness. Consequently, there has been growing interest in the psychological effects of this end of nature. A recent wave of scholarship shows how climate change and the Anthropocene more generally affect people's daily lives and present significant threats to psychic well-being. This paper follows on from these debates. In contrast, however, we ask if and how nature is still considered as providing a subjective sense of (ontological) security today. We argue that, even under postnatural conditions, nature still maintains an imaginary existence in the social reality of the subject. We address this argument empirically by focusing on everyday life perceptions of nature in the city of Vancouver, British Columbia, and theoretically by following the psychoanalyst Jacques Lacan. Drawing on image-based interviews (photo-elicitation), we demonstrate that a psychoanalytic approach to imaginary environments allows us to understand why people state that they love nature even though it does not exist. We show how this love works by pointing out how nature is considered as (m)other and, through this, engaged as a place to retreat and escape from the burdens of everyday life while being perceived from a certain distance. In conclusion, we emphasise the broader political consequences of the imaginary existence of nature and call for further engagement with the persistence of nature's fantasy in times when nature seems to no longer fit the purpose. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
34. A decolonising approach to genre cinema studies.
- Author
-
Shamash, Sarah
- Subjects
DECOLONIZATION ,GENRE studies - Abstract
This paper examines the pedagogical and decolonial possibilities of teaching genre cinema through non-Western perspectives. As a sessional instructor teaching across multiple institutions in Vancouver, Canada, I elaborate on how I have taught genre cinema as a decolonial and pedagogical project. Through course design that recognises the way that the evolution of film theory in general, and genre theory in particular, has been encoded in Euro-Western-centrism and analysis, my teaching practice brings into conversation other knowledges and approaches to film-making and film studies that have often been excluded from film studies pedagogy. My pedagogical project is to decolonise film studies, including genre theory, as exemplified in such courses as: Re-Visioning Genre Theory, a fourth-year course at Emily Carr University of Art and Design; Genre Cinema: From Classical Hollywood to Global Contemporary, a third-year course at the University of British Columbia; and Refiguring Futurisms, a fourth-year film seminar at the University of British Columbia. Some of the questions explored in my research and teaching practice consider how genre cinema is adopted and subverted in contemporary non-Western films. In this paper, I use Latin American decolonial theory to focus on Brazilian cinema as an exemplar of non-Western and decolonial approaches to genre theory. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
35. Marked Spatial Point Processes: Current State and Extensions to Point Processes on Linear Networks.
- Author
-
Eckardt, Matthias and Moradi, Mehdi
- Subjects
- *
POINT processes , *MEMBRANE proteins , *STATISTICAL correlation , *INFLUENZA viruses , *URBAN trees - Abstract
Within the applications of spatial point processes, it is increasingly becoming common that events are labelled by marks, prompting an exploration beyond the spatial distribution of events by incorporating the marks in the undertaken analysis. In this paper, we first consider marked spatial point processes in R 2 , where marks are either integer-valued, real-valued, or object-valued, and review the state-of-the-art to analyze the spatial structure and type of interaction/correlation between marks. More specifically, we review cross/dot-type summary characteristics, mark-weighted summary characteristics, various mark correlation functions, and frequency domain approaches. We also propose novel cross/dot-type higher-order summary characteristics, mark-weighted summary characteristics, and mark correlation functions for marked point processes on linear networks. Through a simulation study, we show that ignoring the underlying network gives rise to erroneous conclusions about the interaction/correlation between marks. Finally, we consider two applications: the locations of two different proteins on the membranes of cells infected with the influenza virus and the locations of public trees along the street network of Vancouver, Canada, where trees are labelled by their diameters at breast height. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
36. Connecting Farmers' Markets to Foodservice Businesses: A Qualitative Exploration of Restaurants' Perceived Benefits and Challenges of Purchasing Food Locally.
- Author
-
Roy, Hiran
- Subjects
- *
FARMERS' markets , *PERCEIVED benefit , *SUSTAINABILITY , *FOOD service , *RESTAURANTS , *GROCERY shopping - Abstract
This paper examines restaurant managements' (owners, managers, or the chefs) perceptions, motivations, and constraints in buying local food ingredients from local farmers' market vendors (farmer vendors) in a study conducted in Vancouver, Canada and Christchurch, New Zealand. Semi-structured interviews were conducted with restaurants (31 in Vancouver and 28 in Christchurch). Results revealed that purchasing local food from farmers' market vendors was perceived as beneficial by restaurants, but they experienced challenges with purchasing. This study further presented evidence that restaurants satisfaction with wholesale distributors is an important purchasing factor in local food purchasing decisions while sustainable production products were not the main motivation among restaurants in both the samples. In the light of empirical findings, theoretical and practical implications are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
37. Social Ecology and Environmental Diversity in Teacher Education.
- Author
-
Zandvliet, David B. and Paul, Alisa
- Subjects
SOCIAL ecology ,SUSTAINABILITY ,DIVERSITY in education ,CAREER development ,TEACHER education ,PLACE-based education - Abstract
This paper offers reflections on the development and potential of a transformative teacher education project as one component of the Professional Development Programs (PDPs) at the Faculty of Education of a comprehensive Canadian university. The work of our teacher education program is set in Vancouver and utilizes the lenses of social ecology and environmental diversity (or SEEDs) to examine the roles of teachers in bringing an awareness of local/global sustainability issues to student learning experiences. Using auto-ethnographical methods our project reflects on a critical and place-based teacher education agenda highlighting democratic and participatory methods in its approach. We use our experiences combined with relevant literature to explore what inspirations might be drawn from our evolving approach. Drawing from Bookchin's social ecology, our teacher education practices are based on the conviction that most of our present ecological problems originate with/in deep-seated social problems. It follows, from this view, that ecological problems cannot be understood, let alone solved, without a more careful understanding of our existing society and the irrationalities that often dominate it. In our most recent work, our teacher education candidates identified strongly with the related theoretical notions of Social Ecology and Diversity; hence, our identity (as seeds or seedlings) is in a state of flux as we continue to move and adapt to our current socio-political conditions. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
38. Model validation and 2-D hygrothermal simulations of wetting and drying behavior of cross-laminated timber.
- Author
-
Wang, Lin, Ge, Hua, and Wang, Jieying
- Subjects
HYGROTHERMOELASTICITY ,MODEL validation ,TIMBER ,CONCRETE testing ,BUILDING performance ,ABSORPTION coefficients - Abstract
Cross-laminated timber (CLT) is one of the most important mass timber materials that are commonly used in mid-rise or even high-rise timber buildings. However, exposure to moisture during construction may increase the moisture damage risks, and impact the durability performance of CLT buildings. To investigate potential solutions for avoiding wetting of CLT components during construction, CLT specimens having different moisture protection measures were tested in the damp and mild wintertime climate in Vancouver. This follow-up work focuses on two-dimensional (2-D) hygrothermal modeling of the wetting and drying behavior of bare CLT (without any protection) and the validation with measurements from the field exposure test, emphasizing the influence of material properties. The hygrothermal models are firstly calibrated for two CLT specimens positioned horizontally, with and without a butt joint, by using material properties from different laboratory tests, and assuming different rain penetration paths. The calibrated models are then applied to simulate CLT specimens positioned vertically, which have end grain directly exposed to rain or damp concrete in the test. The work reveals that the moisture storage function above RH 95%, which includes the saturation water content reported in different literature, has a significant influence on the hygrothermal simulation results; meanwhile, assigning different water absorption coefficients for the transverse and longitudinal directions of wood significantly improves the accuracy of the hygrothermal model created for simulating rainwater penetration into the CLT panel. This paper provides a recommendation on how to properly model the CLT panels exposed to rainwater, which often occurs during construction. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
39. Test-based accountability, standardized testing and minority/racialized students' perspectives in urban schools in Canada and Australia.
- Author
-
Rezai-Rashti, Goli M. and Lingard, Bob
- Subjects
STUDENT attitudes ,ACADEMIC achievement ,URBAN schools ,MINORITY students ,SECONDARY school students ,SOCIAL classes - Abstract
This paper focuses on the perspectives of minority/racialized students in urban high schools. It is based on findings of interviews with 85 students in six secondary schools in Toronto and Vancouver, Canada, and in Melbourne, Australia, during 2016–2019. While there has been increasing attention to closing the racial achievement gap and some minority students' underachievement in education, there are limited studies that centre the voices of students and their experiences with provincial and nationally mandated testing. This paper is not an investigation into minority students' achievement; rather it seeks to understand how minority students perceive and experience this new form of test-based accountability. Grounding the analysis within theories of policy sociology and neoliberal accountability, this paper concludes that current policies of standardized testing have catalysed further inequities and segregation of students based on their 'race' and social class. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
40. Deep learning based deep-sea automatic image enhancement and animal species classification.
- Author
-
Lopez-Vazquez, Vanesa, Lopez-Guede, Jose Manuel, Chatzievangelou, Damianos, and Aguzzi, Jacopo
- Subjects
DEEP learning ,ANIMAL classification ,IMAGE intensifiers ,ANIMAL species ,IMAGE recognition (Computer vision) ,AUTOMATIC classification - Abstract
The automatic classification of marine species based on images is a challenging task for which multiple solutions have been increasingly provided in the past two decades. Oceans are complex ecosystems, difficult to access, and often the images obtained are of low quality. In such cases, animal classification becomes tedious. Therefore, it is often necessary to apply enhancement or pre-processing techniques to the images, before applying classification algorithms. In this work, we propose an image enhancement and classification pipeline that allows automated processing of images from benthic moving platforms. Deep-sea (870 m depth) fauna was targeted in footage taken by the crawler "Wally" (an Internet Operated Vehicle), within the Ocean Network Canada (ONC) area of Barkley Canyon (Vancouver, BC; Canada). The image enhancement process consists mainly of a convolutional residual network, capable of generating enhanced images from a set of raw images. The images generated by the trained convolutional residual network obtained high values in metrics for underwater imagery assessment such as UIQM (~ 2.585) and UCIQE (2.406). The highest SSIM and PSNR values were also obtained when compared to the original dataset. The entire process has shown good classification results on an independent test data set, with an accuracy value of 66.44% and an Area Under the ROC Curve (AUROC) value of 82.91%, which were subsequently improved to 79.44% and 88.64% for accuracy and AUROC respectively. These results obtained with the enhanced images are quite promising and superior to those obtained with the non-enhanced datasets, paving the strategy for the on-board real-time processing of crawler imaging, and outperforming those published in previous papers. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
41. Thermal Assessment of a Ventilated Double Skin Façade Component with a Set of Air Filtering Photocatalytic Slats in the Cavity.
- Author
-
Roig, Oriol, Cuerva, Eva, Pardal, Cristina, Guardo, Alfredo, Isalgue, Antonio, and Lopez-Besora, Judit
- Subjects
AIR filters ,COMPUTATIONAL fluid dynamics ,INDOOR air quality ,AIR purification ,ATMOSPHERIC temperature ,WINTER - Abstract
Indoor air quality is a crucial factor when evaluating habitability, especially in developed countries, where people spend most of their time indoors. This paper presents a novel double skin façade (DSF) system that combines physical and photocatalytic filtering strategies. The air purification system is made up of fixed slats that are both solar protection and air purification system. The objective of this work is to determine the thermal behaviour of the proposed system, so that its suitability for use in various environments may be assessed. This was carried out using a physical 1:1 scale model and a computational fluid dynamics (CFD) model. The maximum temperature inside the scale model cavity was 17–20 °C higher than outdoor air. Additionally, it was discovered that the airflow through the DSF would require forced ventilation. To determine the emissivity values of the photocatalytic coating, additional experimental measurements were made. The CFD model was tested for summer and winter conditions in Barcelona, Chicago, and Vancouver. The average increase in the intake air temperature was around 14.5 °C in winter and 12 °C in summer, finding that the system has its main use potential in temperate or cold areas with many hours of solar radiation. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
42. An Approach for Detecting Data Anomalies at Permanent Cycling Count Stations.
- Author
-
El Esawey, Mohamed
- Subjects
BIG data - Abstract
With the large amounts of available traffic data, it becomes necessary to develop tools that can perform several tasks related to the collected data. These tasks include storing the data in a standard format, filtering the data/flagging suspicious records, processing the data and calculating useful quantitative traffic indices, and finally, visualizing the outcomes. In this paper, a data-driven, yet novel, data-filtering approach was proposed to flag outliers in daily cycling counts at automatic traffic counters (ATCs). The approach was motivated by the spatiotemporal relationship of cycling counts collected at permanent count stations. The proposed approach is flexible because it assumes no prior knowledge about which locations may experience sensor malfunction (i.e., outliers). The approach was tested using a large data set of more than 111,000 daily bicycle volumes collected in 4 years (2016-2019) at more than 60 different permanent count stations in the City of Vancouver, Canada. The approach was validated using complete annual sets of data at four count stations in 2016. Scenarios of undercounting and overcounting were simulated using different percentages of the actual counts. The results showed that the proposed approach has a strong ability in detecting and removing most outliers, especially for cases of substantial undercounting. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
43. Sounds of Life and Concern: Echoing Through Lively Storytelling in Early Childhood Education.
- Author
-
Ibanez, Veronica, Tadokoro, Karen, Shuxiao (Sheena) Li, and Long Hei (Icy) Sze
- Subjects
EARLY childhood education ,EARLY childhood educators ,STORYTELLING ,INTERDISCIPLINARY education ,ENVIRONMENTAL sciences - Abstract
This paper emerges from the journey of a group of early childhood educators seeking to reconnect with land in meaningful and ethical ways. Reorienting from humancentric views, the authors explore "lively storytelling" to bring attention to overlooked stories and create alternative ways of being and thinking. We are called into new relations and ecological entanglements through a sensitive and responsive attunement to the soundscapes of Lynn Creek and Hastings Creek in Vancouver and Bow River in Calgary. Our engagement encompasses a posthumanist framework while weaving interdisciplinary studies in environmental humanities, materiality, and architecture to encourage generative inquiries and dialogue in early childhood classrooms and communities. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
44. Perform and Transform the Settler Colonial City: Digital Infrastructure and Located Expression on Instagram.
- Author
-
Karsgaard, Carrie
- Subjects
DIGITAL technology ,COLONIES ,OUTDOOR recreation - Abstract
While opposition to the Trans Mountain pipeline extends far beyond British Columbia's southwest coast, Vancouver provides a specific site to explore the intersections of platform, place, and anti-pipeline sentiment in Instagrammed expression surrounding a controversy embedded in colonial extraction. A city located on Indigenous lands yet shaped by an elite settler imaginary of sustainability, outdoor recreation, and west coast lifestyles, Vancouver-based anti-pipeline resistance sees the uneven geographic intersection of the pipeline with various social, environmental, and climate concerns, including Canada's failure to acknowledge Indigenous sovereignty on pipeline-affected lands. Through the patterns revealed by digital methods and visual methodologies centered on Instagram's location tag, this paper reveals how settler colonialism infuses the platformed and grounded components in place-based issue expression -- and also how it is resisted, reconfiguring relations both on the land and in the digital realm. [ABSTRACT FROM AUTHOR]
- Published
- 2022
45. Rewilding Play: Design Build Interventions.
- Author
-
Herrington, Susan, Lexa-French, Ivana, and Brussoni, Mariana
- Subjects
EARLY childhood educators ,EARLY intervention (Education) - Abstract
Research on physical interventions installed in outdoor environments and their impacts on children's play and development is a growing area of study. This paper focuses on the design and installation of outdoor interventions at early childhood education centres in Vancouver, Canada and the impact that theses interventions had on play affordances. With the aim of intervening with inexpensive natural materials and loose parts, graduate students designed, built, and installed interventions and using the Seven Cs evaluation form they scored the play spaces pre- and post-installation. Design methods included the Seven Cs design guidelines and the Two-Eyed Seeing model. Students also sought the insights of Early Childhood Educators, maintenance staff, licensing officers, the British Columbia Cancer Agency, and an Indigenous herbalist/educator. They also examined and addressed solar modifications to create dappled light. To understand the impacts of the student interventions researchers compared the pre- and post-intervention Seven Cs scores, which increased by 20 to 30 points. Researchers seeking to replicate this type of project in their own institutions should carefully consider the impact of climate change on construction timing and material selection, and sensitivity to the diversity of socio-cultural values embedded in the community and within design decisions and the interventions themselves. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
46. Transit facility allocation: Hybrid quantum-classical optimization.
- Author
-
Gabbassov, Einar
- Subjects
QUANTUM annealing ,GEOGRAPHIC information systems ,FACILITY management ,QUANTUM computers ,PUBLIC transit ,QUANTUM superposition - Abstract
An essential consideration in urban transit facility planning is service efficiency and accessibility. Previous research has shown that reducing the number of facilities along a route may increase efficiency but decrease accessibility. Striking a balance between these two is a critical consideration in transit planning. Transit facility consolidation is a cost-effective way to improve the quality of service by strategically determining the desirable allocation of a limited number of facilities. This paper develops an optimization framework that integrates Geographical Information systems (GIS), decision-making analysis, and quantum technologies for addressing the problem of facility consolidation. Our proposed framework includes a novel mathematical model that captures non-linear interactions between facilities and surrounding demand nodes, inter-facility competition, ridership demand and spatial coverage. The developed model can harness the power of quantum effects such as superposition and quantum tunnelling and enables transportation planners to utilize the most recent hardware solutions such as quantum and digital annealers, coherent Ising Machines and gate-based universal quantum computers. This study presents a real-world application of the framework to the public transit facility redundancy problem in the British Columbia Vancouver metropolitan area. We demonstrate the effectiveness of our framework by reducing the number of facilities by 40% while maintaining the same service accessibility. Additionally, we showcase the ability of the proposed mathematical model to take advantage of quantum annealing and classical optimization techniques. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
47. Retrospection and Reflection on the Role of Henry C. Lu as a Traditional Chinese Medicine Writer, Educator, and Translator.
- Author
-
Xiao-Li Li, Li-An Ma, and Qing Wu
- Subjects
CHINESE medicine ,TRANSLATORS ,COLLEGE presidents ,EDUCATORS - Abstract
This paper respectfully commemorates the life of Dr. Henry C. Lu (1936-2022), who was the founding president of International College of Traditional Chinese Medicine of Vancouver. Dr. Lu was an active educator, a prolific writer and translator of traditional Chinese medicine (TCM) in the West and an influential figure during the initial stage of the international dissemination of TCM. By comprehensively searching, referencing, and cross-validating the literature, this article reviewed Dr. Lu's major life events, bibliography, and, most importantly, his contribution to TCM education and translation. Dr. Lu should be given more credit for his achievements, and further studies are needed in future. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
48. Impact of Revised Seismic Hazard Values in NBCC 2015 on RC Shear Wall Buildings.
- Author
-
El-Sokkary, Hossam and Elsharawy, Mohamed
- Subjects
SHEAR walls ,WALLS ,BENDING moment ,EARTHQUAKE zones ,SHEARING force ,FLEXURAL strength - Abstract
This paper investigates the impact of revised seismic hazard values in the National Building Code of Canada (NBCC 2015) on the design of reinforced-concrete (RC) shear wall buildings. Five buildings with different heights located in three cities in Canada are selected. Toronto, Montreal, and Vancouver are selected to represent low, medium, and high seismic hazard zones. The buildings are designed according to the NBCC 2010 and then checked against the updated design spectral accelerations of the NBCC 2015. The seismic demands are compared, and the need for retrofit of existing walls is evaluated. The analyses showed that the maximum interstory drift ratios increased specially for buildings in Vancouver. The shear force and bending moment demands increased for most buildings in Vancouver by up to 32% and 60%, respectively. A significant decline in the moment overstrength ratio was noticed for walls in Vancouver, which indicates that flexural strengthening might be mandatory for these walls. Moreover, the code changes had a great negative impact on the walls' ductility for buildings in Vancouver due to the higher deformations exhibited. Several retrofit techniques available in the literature were discussed to enhance the flexural strength and ductility of RC shear walls as remedies for the consequences of the updated seismic hazard in Canada. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
49. ALF-Score++, a novel approach to transfer knowledge and predict network-based walkability scores across cities.
- Author
-
S. Alfosool, Ali M., Chen, Yuanzhu, and Fuller, Daniel
- Subjects
WALKABILITY ,KNOWLEDGE transfer ,RANDOM forest algorithms - Abstract
Walkability is an important measure with strong ties to our health. However, there are existing gaps in the literature. Our previous work proposed new approaches to address existing limitations. This paper explores new ways of applying transferability using transfer-learning. Road networks, POIs, and road-related characteristics grow/change over time. Moreover, calculating walkability for all locations in all cities is very time-consuming. Transferability enables reuse of already-learned knowledge for continued learning, reduce training time, resource consumption, training labels and improve prediction accuracy. We propose ALF-Score++, that reuses trained models to generate transferable models capable of predicting walkability score for cities not seen in the process. We trained transfer-learned models for St. John's NL and Montréal QC and used them to predict walkability scores for Kingston ON and Vancouver BC. MAE error of 13.87 units (ranging 0–100) was achieved for transfer-learning using MLP and 4.56 units for direct-training (random forest) on personalized clusters. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
50. Manufacturing Engineering as a Multi-Campus Program.
- Author
-
Keulen, Casey James, Sielmann, Christoph Johannes, and Richert, Dean
- Subjects
HIGHER education ,ENGINEERING education - Abstract
In pursuit of greater opportunities for students, higher education institutes are increasingly expanding their physical presence to become multi-campus institutions. One such institution is the University of British Columbia, with campuses in Vancouver, B.C., Canada and Kelowna (Okanagan), B.C., Canada, which are over 400 km (250 miles) from each other. This program is the first of its kind within the Faculty of Applied Science to be offered across both campuses. This paper gives an overview of the undergraduate Manufacturing Engineering program, including benefits and challenges to being multi-campus. It discusses courses that are taught across both campuses, a fourth (final) year option to pursue one of two specialties on either campus, and efforts made to build student connections and community across campuses. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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