19683 research outputs found
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Standardizing the fish freshness class during ice storage using clustering approach
No full textNo description supplied</p
Preferences of people with post-stroke aphasia for aphasia research videos: An international project
No full textBackground: Most aphasia research is published in international, peer-reviewed journals in a format that is inaccessible for people with aphasia (PWA). Video presents an ideal format for disseminating information to PWA in an accessible digital format. No research has explored the preferred format for aphasia research videos from the perspectives of PWA. Aims: To explore the format preferences of PWA for aphasia-accessible research videos. Methods and procedures: The study involved three stages; all used a semi-structured focus group design. Stage 1 (n = 16 PWA) developed the topic guide. PWA shared opinions about which questions they considered important for Stage 2 interview questions. Stage 2 gathered the votes of PWA (n=40) using these questions. Stage 3 (n = 6 PWA) reviewed the voting results of Stage 2 and collected opinions from PWA about an example video that adhered to the identified preferences. Data analysis for all stages used descriptive statistics (e.g., counts) and qualitative content analysis. Outcomes and results: We identified 11 consumer-informed preferences for aphasia-accessible research videos: 1-Speak with normal rate; 2-Tailor video duration to content: 5-10 minutes was most acceptable; 3-Include researcher photos; 4-Use written keywords; 5-Use a mix of images; 6-Include a PWA; 7-No preference for deciding topic; 8-Avoid background music; 9-Provide a summary at the end; 10-Translate into other languages; and 11-Link to resources. Conclusion: These preferences should guide the development of aphasia-accessible research videos, assisting researchers to bridge the evidence-knowledge gap in the aphasia community. Further research is required, including with non-English participants and family members of PWA
How effective are exercises delivered digitally (requiring internet), amongst patients with hip or knee osteoarthritis? A systematic review and meta-analysis
No full textObjective: The aim of this systematic review and meta-analysis is to describe the effect of digitally delivered exercise on pain, physical function and quality of life (QoL) for people with knee or hip osteoarthritis (OA). Methods: Articles were eligible for inclusion if they were of a randomized control trial that evaluated the prescription of digitally delivered exercise (requiring the internet) in people with symptomatic primary hip and/or knee OA. Risk of bias was assessed using the Physiotherapy Evidence Database scale, and levels of evidence were assessed according to Grading of Recommendations Assessment, Development and Evaluation. Results: Digitally delivered exercise was delivered via synchronous and asynchronous methods (or a combination of both). Digitally delivered exercise was superior to education only for pain and physical function, with high-quality evidence for quality-of-life outcomes in the long-term (standardized mean difference −0.35, 95% confidence interval −0.59 to −0.12, P = 0.003) in people with knee OA. Furthermore, there was very low to low-quality evidence that digitally delivered exercise was comparable to face-to-face delivery in the short and long-term for people with hip or knee OA and comparable in the medium-term for people with knee OA only. Discussion: The review demonstrated very low to low-quality evidence that digitally delivered exercise was comparable to face-to-face delivery for pain, function and QoL. In the absence of higher-level evidence, we would provisionally recommend that healthcare providers offer the choice of face-to-face or digitally delivered exercise intervention for people with hip or knee OA. Further work is required to understand these programs' reach, access, uptake and implementation across diverse population groups
Spatiotemporal Deposition of Cell Wall Polysaccharides in Oat Endosperm During Grain Development
No full textOat (Avena sativa) is a cereal crop whose grains are rich in (1,3;1,4)-β-D-glucan (mixed-linkage glucan or MLG), a soluble dietary fiber. In our study, we analyzed oat endosperm development in 2 Canadian varieties with differing MLG content and nutritional value. We confirmed that oat undergoes a nuclear type of endosperm development but with a shorter cellularization phase than barley (Hordeum vulgare). Callose and cellulose were the first polysaccharides to be detected in the early anticlinal cell walls at 11 days postemergence (DPE) of the panicle. Other polysaccharides such as heteromannan and homogalacturonan were deposited early in cellularization around 12 DPE after the first periclinal walls are laid down. In contrast to barley, heteroxylan deposition coincided with completion of cellularization and was detected from 14 DPE but was only detectable after demasking. Notably, MLG was the last polysaccharide to be laid down at 18 DPE within the differentiation phase, rather than during cellularization. In addition, differences in the spatiotemporal patterning of MLG were also observed between the 2 varieties. The lower MLG-containing cultivar AC Morgan (3.5% w/w groats) was marked by the presence of a discontinuous pattern of MLG labeling, while labeling in the same walls in CDC Morrison (5.6% w/w groats) was mostly even and continuous. RNA-sequencing analysis revealed higher transcript levels of multiple MLG biosynthetic cellulose synthase-like F (CSLF) and CSLH genes during grain development in CDC Morrison compared with AC Morgan that likely contributes to the increased abundance of MLG at maturity in CDC Morrison. CDC Morrison was also observed to have smaller endosperm cells with thicker walls than AC Morgan from cellularization onwards, suggesting the processes controlling cell size and shape are established early in development. This study has highlighted that the molecular processes influencing MLG content and deposition are more complex than previously imagined
Ethical dilemma arises from optimizing interventions for epidemics in heterogeneous populations
No full textInterventions to mitigate the spread of infectious diseases, while succeeding in their goal, have economic and social costs associated with them. These limit the duration and intensity of the interventions. We study a class of interventions which reduce the reproduction number and find the optimal strength of the intervention which minimizes the final epidemic size for an immunity inducing infection. The intervention works by eliminating the overshoot part of an epidemic, and avoids a second wave of infections. We extend the framework by considering a heterogeneous population and find that the optimal intervention can pose an ethical dilemma for decision and policymakers. This ethical dilemma is shown to be analogous to the trolley problem. We apply this optimization strategy to real-world contact data and case fatality rates from three pandemics to underline the importance of this ethical dilemma in real-world scenarios
Epidemiology of quadriceps muscle strain injuries in elite male Australian football players
No full textObjective: To describe the epidemiology of quadriceps muscle strain injury (QMSI) in elite Australian Football League (AFL) players, explore recovery milestones and determine whether recovery is impacted by factors such as injury type (index vs. re-injury), the primary muscle injured and the mechanism of injury. Measures: All QMSI data reported to the Soft Tissue Injury Registry of the AFL from the 2014 to 2020 seasons were evaluated. Player demographic data, circumstances of injury, MRI reports and recovery outcomes following injury were extracted. Descriptive statistics and frequency distributions are presented. Recovery outcomes for injury type, primary muscle injured and the mechanism of injury were compared using univariate analyses. Results: There were 164 QMSIs from 122 players reported (134 index; 30 re-injuries). Almost all (91.3%) QMSIs involved the rectus femoris. Half (48.4%) of the QMSIs occurred during kicking and most commonly affected the dominant kicking leg (72%). The majority occurred at training (64.6%). All re-injuries involved the rectus femoris, most occurred from kicking (63.0%) and within 6 months of the preceding injury (70%). The mean return to play (RTP) time was 25.4 days (95%CI = 22.6–28.2) and rectus femoris injuries took around 14 days longer to RTP than vastii injuries (p = 0.001). QMSIs with a kicking mechanism took the longest to RTP of all injury mechanisms. Conclusion: In AFL players, QMSIs occur mostly in the dominant leg from a kicking mechanism. Rectus femoris injuries are more prevalent and result in longer RTP time frames. Re-injuries exclusively involved the rectus femoris, primarily from kicking
Epidemiology of acute infections in people who inject drugs in Australia
No full textIssues: People who inject drugs are at risk of acute infections, such as skin and soft tissue infections, infective endocarditis, bone and joint infections and bloodstream infections. There has been an increase in these infections in people who inject drugs internationally over the past 10 years. However, the local data regarding acute infections in Australia has not been well described. Approach: We review the epidemiology of acute infections and associated morbidity and mortality amongst people who inject drugs in Australia. We summarise risk factors for these infections, including the concurrent social and psychological determinants of health. Key Findings: The proportion of people who report having injected drugs in the prior 12 months in Australia has decreased over the past 18 years. However, there has been an increase in the burden of acute infections in this population. This increase is driven largely by skin and soft tissue infections. People who inject drugs often have multiple conflicting priorities that can delay engagement in care. Implications: Acute infections in people who inject drugs are associated with significant morbidity and mortality. Acute infections contribute to significant bed days, surgical requirements and health-care costs in Australia. The increase in these infections is likely due to a complex interplay of microbiological, individual, social and environmental factors. Conclusion: Acute infections in people who inject drugs in Australia represent a significant burden to both patients and health-care systems. Flexible health-care models, such as low-threshold wound clinics, would help directly target, and address early interventions, for these infections
Machine learning and blockchain technologies for cybersecurity in connected vehicles
No full textFuture connected and autonomous vehicles (CAVs) must be secured against cyberattacks for their everyday functions on the road so that safety of passengers and vehicles can be ensured. This article presents a holistic review of cybersecurity attacks on sensors and threats regarding multi-modal sensor fusion. A comprehensive review of cyberattacks on intra-vehicle and inter-vehicle communications is presented afterward. Besides the analysis of conventional cybersecurity threats and countermeasures for CAV systems, a detailed review of modern machine learning, federated learning, and blockchain approach is also conducted to safeguard CAVs. Machine learning and data mining-aided intrusion detection systems and other countermeasures dealing with these challenges are elaborated at the end of the related section. In the last section, research challenges and future directions are identified. </p
Family Functioning in Children With ADHD and Subthreshold ADHD: A 3-Year Longitudinal Study
No full textObjective: To compare family functioning over time for elementary school children with Attention-Deficit/Hyperactivity Disorder (ADHD; N = 179) and subthreshold ADHD (ST-ADHD; N = 86), to children without ADHD (Control; N = 212). Method: ADHD was assessed using the Conners 3 ADHD Index and Diagnostic Interview Schedule for Children IV. At baseline, 18-month follow-up and 36-month follow-up, parents completed measures assessing a range of family functioning domains. Results: At baseline, the ADHD group reported higher psychological distress, less parenting self-efficacy, less parenting consistency, and more stressful life events; and both groups reported poorer family quality of life (QoL) and greater parenting anger. Trajectories were largely similar to controls (i.e., stable over time), but unlike controls, ADHD and ST-ADHD groups showed lessening parent-partner support and parenting warmth, respectively; and both groups showed worsening aspects of family QoL. Conclusion: Families of children with ADHD and ST-ADHD report persistently poor or worsening family functioning; highlighting a need for tailored psycho-social supports
