Edge computing moves data and storage to one end of edge nodes. The advantages of direct data collection and intelligent analysis are gradually being considered as disruptive technologies to promote social progress. Many fields and industries are exploring the use of edge technologies. To achieve the goal of improving efficiency and optimizing business models, the supply chain is one of the areas where edge computing technology can be prioritized. Therefore, the organization and coordination of the supply chain must take into account both energy saving and emission reduction and intelligent decision-making effects. This paper establishes a basic decision-making model for the supply chain under the carbon tax constraint and compares and analyzes the optimal decision-making problem of the supply chain between the centralized and decentralized decisions of producers and retailers under the carbon tax constraint. Then, the supply chain optimization under the three conditions of considering the repurchase contract, the subsidy policy and the joint strategy of both the repurchase and the subsidy under the constraint of carbon tax are discussed. Research shows that carbon tax can play a role in reducing carbon emissions, but for some industries with smaller profit margins, relying solely on carbon tax policy may lead to reduced benefits and make business development difficult. Therefore, considering the combined strategy of repurchase and subsidy at the same time, the dual goals of emission reduction and economic benefits can be achieved. INDEX TERMS Edge computing, carbon tax constraint, low carbon supply chain, intelligent decision.

Plain language summaryPlain language summaryThe PROMPT study is a community-based research project designed to understand the factors which affect smoking as well as ways to manage, reduce and quit smoking among people who use drugs in Ottawa. There is strong medical evidence that smoking tobacco is related to more than two dozen diseases and conditions. Smoking tobacco remains the leading cause of preventable death and has negative health impacts on people of all ages. Although Ottawa has one of the lowest smoking rates in Ontario (12 %), major differences exist, with approximately a 96 % smoking rate among those who use drugs in the city of Ottawa. To address this inequity, we recruited and trained four community research peers who were representative of the study target population (ex- or currently homeless, insecurely housed or multi-drug users). We designed the ten-step Ottawa Citizen Engagement and Action Model (OCEAM) for the PROMPT study. In this paper we have described this process in a step-by-step fashion, as used in the PROMPT study. The eighty PROMPT participants are being followed for six months and are being provided with free and off-label Nicotine Replacement Therapy (NRT).AbstractObjectives The PROMPT study, Participatory Research in Ottawa, Management and Point-of-care of Tobacco, is a prospective cohort study which utilizes community-based participation and social network-based approaches to address tobacco dependence in inner city Ottawa. The project was designed to: facilitate retention of participants; to understand the barriers and facilitators of smoking; optimize ways to manage, reduce, and quit tobacco use among people who use drugs in Ottawa, Canada. The purpose of this paper is to describe the processes utilized in citizen or patient engagement in academic research, through our tobacco dependence management project in the inner city population in Ottawa, Canada.Background Tobacco smoking is inequitably distributed in Canada with rates at 12 % in Ottawa, as compared to 18 % in rest of Canada. However, the PROUD Study (Participatory Research in Ottawa: Understanding Drugs) demonstrated that 96 % of the inner city population, of Ottawa currently smoke tobacco. This distinct inequity in tobacco use translates into inequitable distribution of health outcomes, such morbidity and mortality in this population. Consequently, a community-based participatory, peer-led research project was conducted in the inner city population of Ottawa.Methods We recruited and trained four community research peers who were representative of the study target population. We conceived, designed and operationalized the ten-step Ottawa Citizen Engagement and Action Model (OCEAM) for the PROMPT study. The peers have co-led all aspects of the project from conceptualizing the study question to participating in knowledge translation. Each step of the project had defined objectives and outcome measures.Discussion The involvement of peers in recruitment ensured representation of tobacco and drug users—individuals truly re...

Plain summaryThis article examines the overall experiences of community researchers in their involvement with the ‘PROMPT’ project for smoking cessation, which targeted community members who were homeless or at-risk for homelessness. More specifically, four community members, representing the study population were involved in the project as researchers. They were asked to complete surveys at both the beginning and end of each research training session to better understand their learning as it related to using a key instrument for this project, a spirometer, to measure project participants’ lung function. Spirometry is typically performed by trained healthcare providers. Community researchers were also interviewed to explore what their experiences were like working as a researcher with their own at-risk community. Although the researchers felt that the training was sufficient, more research is needed to evaluate training effectiveness among community researchers in delivering acceptable quality lung function testing using a spirometer. Upon analyzing the small group discussion and survey results, we found that the community researchers had an overall positive experience with both the project, and the training that was provided to equip them with the knowledge, tools, and resources they needed to successfully work in a research project of this kind. They also faced challenges that are common in such community-based projects, such as the power differential between the researchers with a healthcare background and themselves who have lived experience with the issue at hand.Abstract Background The Ottawa Citizen Engagement and Action Model (OCEAM) used a Community Based Participatory Action Research (CBPAR) approach by involving the most at-risk urban population. Community (peer) researchers participated in every step of the study despite the multiple challenges. Objective To assess the community researchers’ training and experiences in a CBPAR project, PROMPT: Participatory Research in Ottawa: Management and Point-of-care for Tobacco Dependence. Method Four community researchers were recruited, representative of the PROMPT project’s target population with current or past poly-substance use; smoking tobacco; and/or being homeless or at-risk for homelessness. The community researchers participated in all phases of PROMPT, including study design, development of questionnaires, participant recruitment, administering consent forms and questionnaires, as well as hand-held spirometry after rigorous training. To assess their knowledge and comfort level with spirometry testing after standardized training, questionnaires were administered pre- and post-training. In turn, to assess their overall experience, interviews were conducted at the end of study completion. Results All community researchers underwent small-group training sessions including presentations, discussions and hands-on practice adapted from standardized training material prepared for health care professionals. Spirometry training was included in all sessions. Se...

ObjectiveTo determine the feasibility of a Community-Based Participatory Tobacco Dependence Strategy (PROMPT) in the inner city population of Ottawa (Canada).DesignA feasibility mixed methods prospective cohort study following principles of community-based participatory action research.InterventionRecruited 80 people whouse drugs, followed them for 6 months while providing access to counselling, nicotine replacement therapy and peer-support in a community setting.SettingCommunity research office in downtown Ottawa, adjacent to low-income housing, shelter services and street-based drug consumption.Primary outcomeRetention rate at 6-month follow-up.Secondary outcomeBiochemically validated 7-day point prevalence smoking abstinence at 26 weeks, self-reported abstinence in the past 7 days with exhaled carbon monoxide ≤10 ppm.ResultsThe average age of participants was 43.8 years. The 6-month follow-up rate was 42.5%. The mean number of smoking years reported was 27.3 years. The participants were 70% male, 33.7% reported less than a high-school education, 21% identified as indigenous and 43.8% reported an income between US$1000 and US$1999 per month. The baseline mean daily cigarette use was 20.5 and 9.3 cigarettes at study end, with mean reduction of 11.2 cigarettes at 6 months (P=0.0001). There was a considerable reduction in self-reported illicit substance use (18.8%), including a reduction in the opioids heroin (6.3%), fentanyl (2.6%) and Oxycontin (3.8%). The study findings also reveal psycho-socioeconomic benefits such as improved health, return to work and greater community engagement.ConclusionsThe PROMPT project describes socioeconomic variables associated with tobacco and polysubstance use. A programme focused on tobacco dependence, easily accessible in the community and led by community peers with lived experience is feasible to implement and has the potential to support positive life changes. PROMPT’s patient engagement model is an effective harm-reduction strategy for the growing opioid use crisis and can improve the health outcomes of marginalised at-risk populations worldwide.