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Quality of Experience Experimentation Prediction Framework through Programmable Network Management
Get PDFQuality of experience (QoE) metrics can be used to assess user perception and satisfaction in data services applications delivered over the Internet. End-to-end metrics are formed because QoE is dependent on both the users’ perception and the service used. Traditionally, network optimization has focused on improving network properties such as the quality of service (QoS). In this paper we examine adaptive streaming over a software-defined network environment. We aimed to evaluate and study the media streams, aspects affecting the stream, and the network. This was undertaken to eventually reach a stage of analysing the network’s features and their direct relationship with the perceived QoE. We then use machine learning to build a prediction model based on subjective user experiments. This will help to eliminate future physical experiments and automate the process of predicting QoE
Counselling students' responses to conducting role‐play activities online: An evaluation of MSc university students
Get PDFThe transition to remote learning in response to the COVID-19 pandemic was unprecedented and unanticipated, resulting in professional courses delivering content and conducting skills-based practice online. For counselling students, placements also transitioned to online, meaning previous skills acquired through face-to-face learning required adapting for remote working. This project sought to evaluate UK-based counselling students' experiences of participating in online role-play activities. Through purposive sampling, individual semi-structured interviews were conducted and analysed applying thematic analysis. The findings indicated participants identified fundamental differences between planned online content compared to the unanticipated transition they experienced due to the pandemic. Whilst varying attitudes were shared, all participants recognised the value of skill acquisition for future employability and all recommended an element of online practice should be embedded in future course delivery. Whilst limited to a specific sample, key recommendations were identified, including the importance of involving students in course development, recognising the importance of diversifying role-play practices for skill development and the application of a transitions model to facilitate understanding of the student experience. Though making some progress towards understanding this unique experience, further evaluations conducted with students from different counselling fields and institutions are required to further strengthen the recommendations made
Effects of Isometric Leg Training on Ambulatory Blood Pressure and Morning Blood Pressure Surge in Young Normotensive Men and Women : Isometric Training & Morning BP Surge
Get PDFDespite the reported association between diurnal variations in ambulatory blood pressure (BP) and elevated cardiovascular disease risk, little is known regarding the effects of isometric resistance training (IRT), a practical BP-lowering intervention, on ambulatory BP and morning BP surge (MBPS). Thus, we investigated whether (i) IRT causes reductions in ambulatory BP and MBPS, in young normotensives, and (ii) if there are any sex differences in these changes. Twenty normotensive individuals (mean 24-h SBP = 121 ± 7, DBP = 67 ± 6 mmHg) undertook 10-weeks of bilateral-leg IRT (4 × 2-min/2-min rest, at 20% maximum voluntary contraction (MVC) 3 days/week). Ambulatory BP and MBPS (mean systolic BP (SBP) 2 h after waking minus the lowest sleeping 1 h mean SBP) was measures pre- and post-training. There were significant reductions in 24-h ambulatory SBP in men (- 4 ± 2 mmHg, P = 0.0001) and women (- 4 ± 2 mmHg, P = 0.0001) following IRT. Significant reductions were also observed in MBPS (- 6 ± 8 mmHg, p = 0.044; - 6 ± 7 mmHg, P = 0.019), yet there were no significant differences between men and women in these changes, and 24-h ambulatory diastolic BP remained unchanged. Furthermore, a significant correlation was identified between the magnitude of the change in MBPS and the magnitude of changes in the mean 2-h SBP after waking for both men and women (men, r = 0.89, P = 0.001; women, r = 0.74, P = 0.014). These findings add further support to the idea that IRT, as practical lifestyle intervention, is effective in significantly lowering ambulatory SBP and MBPS and might reduce the incidence of adverse cardiovascular events that often occur in the morning
Changemakers as digital makers : Connecting and cocreating
Get PDFThis paper presents data from two international projects focused on the interaction between changemaking and digital making in university students. The data is drawn from the contributions of 63 university students located in the United States, Romania, Spain, Belgium, Norway, Denmark and England. Using a design thinking methodology and a thematic analysis of student responses, the aim was to understand how the creative use of immersive technologies, such as augmented and virtual reality, might create an environment for changemaking practices in an international context. Findings suggest that students demonstrated not only enhanced digital skills and student engagement but increased cultural competence and global mindfulness. International digital collaboration can create conditions for students to develop changemaker attributes and identify as changemakers within the spheres of entrepreneurship and education, preparing them to be a force for change in the world
Telemedicine and insomnia : a comprehensive systematic review and meta-analysis
Get PDFTelemedicine has been introduced as a new and effective method in dealing with public health challenges, improving access to health care, and reducing healthcare costs in today's world. Insomnia is the most common sleep disorder that can be managed with cognitive behavioural therapy, however, access to skilled therapists is an issue. Telemedicine improves access to care and thus, it may facilitate management of insomnia. The aim of this study was to assess whether telemedicine can be as effective as traditional in person sleep medicine service for the diagnosis, follow-up, and treatment of insomnia. In this systematic review and meta-analysis, studies related to telemedicine and insomnia were identified and selected, using the keywords of telemedicine, insomnia, sleep disorder, treatment, non-pharmacological treatment. The international databases of Embase, ProQuest, ScienceDirect, Scopus, PubMed and Web of Science (WoS), and Google Scholar were searched without a lower time limit, and until July 12, 2021. Data were analysed within the Comprehensive Meta-Analysis (version 2) software, and the significance level of the test was considered P ˂ 0.05. A systematic review of 16 selected studies showed that telemedicine interventions have a positive effect on improving insomnia in different groups. The meta-analysis was performed on 2 studies. Based on the results, CBTI interventions based on telemedicine have a greater effect on improving chronic insomnia than face to face CBTI with an average difference of 2.05 ± 0.66 based on the random effects model. Moreover, the difference between the mean in the telemedicine intervention group and the non-intervention group was 0.65 ± 0.19, which shows the positive effect of the telemedicine intervention. The use of telemedicine in treatment of insomnia not only accelerates access to sleep services, but can also improve the efficiency of health services in terms of time and cost, as well as therapeutic effects. [Abstract copyright: Copyright © 2022 Elsevier B.V. All rights reserved.
Effects of Isometric Resistance Training and a Maintenance Dose on Ambulatory Blood Pressure and Morning Blood Pressure Surge in Young Normotensives
Get PDFIntroduction Hypertension, a modifiable risk factor for cardiovascular disease (CVD) is associated with approximately one third of deaths globally each year. Diurnal blood pressure (BP) variability and more specifically morning blood pressure surge (MBPS) are associated with increased risk of stroke, end-organ damage and are considered to be destabilising factors for atherosclerotic plaques. Isometric resistance training (IRT) has been shown to reduce ambulatory BP and MBPS following 8-10 weeks of training. However, there is no data at present which has established the dose of training needed to maintain these reported reductions following the initial IRT period. Therefore, the purpose of this study was to determine the effects of IRT on ambulatory BP and the MBPS in young normotensives following (i) 8 weeks of IRT and (ii) 8 weeks of a once a week maintenance dose. Methods Twenty-five normotensive individuals (15 men, age=21±4 years; 10 women, age=22±3 years) were randomly assigned to a training-maintenance (TRA-MT, n=13) or control (CON, n=12) group. Ambulatory BP and MBPS were measured prior to, after an 8-week (3 days/week) training period and following an 8-week maintenance period (1 day/week) of bilateral leg IRT using an isokinetic dynamometer (4 x 2-minute contractions at 20% MVC with 2-minute rest periods). A two-way repeated measures MANOVA was used to assess the within and between groups changes in ambulatory BP and MBPS. MBPS was calculated as: mean systolic BP 2 hours after waking, minus the lowest sleeping 1-hour mean systolic BP. Results There were significant reductions in 24-h ambulatory systolic BP following IRT (pre-to-post training, -7±5 mmHg, p=0.001) and these reductions remained after the maintenance period (pre-to-post maintenance, -6±4 mmHg, p=0.000). There were significant reductions in daytime BP (pre-to-post training, -5±5 mmHg, p=0.034) which remained following maintenance (pre-to-post maintenance, -5±5 mmHg, p=0.02), but there was no change in night-time systolic BP (pre-to-post training, -2±5 mmHg, p=0.685) or post maintenance period (pre-to-post maintenance, 1±6 mmHg, p=0.94). Additionally, there were significant reductions in the MBPS (pre-to-post training, -9±10 mmHg, p=0.005) which were maintained post maintenance period (pre-to-post maintenance, -8±11 mmHg, p=0.014). Additionally, significant correlation was identified between the magnitude of the change in MBPS and the magnitude of changes in mean SBP 2-h after waking (r = 0.78, P=0.002). Discussion These results provide further evidence that IRT causes significant reductions in MBPS in addition to the previously reported reductions in ambulatory BP. Additionally, these reductions seem to be maintained with a reduced exercise dose. These findings may also have important clinical implications, the significant reductions in the MBPS offer the potential for meaningful CVD and stroke risk reduction, provided these effects can be demonstrated in those who are at risk
The tattooed feminine body: Considerations for sexuality and British culture
Get PDFOver the past couple of decades, numerous pieces of research consider the rise in the popularity, availability, and accessibility of tattoos. Within this, there is a small amount that explores women’s tattooed bodies, and an even smaller amount that considers how tattooed bodies are navigated within particular cultures, such as in Britain. This chapter explores the intersecting issues of gender, class, and sexuality in how women make sense of their own tattooed bodies. Through interviews with British women, clear discourses emerge that demonstrate how pervasive notions of normative femininity are, with stereotypical representations that exist within heteronormative contexts frame how we make sense of femininity. In addition, the chapter explores how tattoos are embedded within a (predominantly working-class) culture, and why this is specifically important to a British context. To conclude, the chapter discusses how it is difficult to disentangle these intersecting issues, with thoughts to how they affect women explicitly. Understanding discourses surrounding tattooed women’s bodies provides us with insights into cultural issues that play a key role in identity work
Quantitative Risk-Analysis Process of Oil and Gas Upstream Service Contracts
Get PDFContracts are a means to allocate the scope of work and associated risks to the owners and contractors involved. In case of megaprojects, because there is much at stake, identifying risk factors of megaprojects and estimating their likelihoods and consequences are vital. Likewise, analyzing how the contract risks are shared between parties and predicting the possibilities of achieving the contract goals are important practices as well. This paper, through an exploratory research, describes a risk-analysis procedure and the results of applying probabilistic risk analysis (PRA) techniques on the new Iranian upstream contract framework for a real-world gas megaproject. Such a process consists of (1) gathering and reporting all risk factors affecting construction schedule, cost, internal rate of return (IRR), and gross and net revenue; (2) eliciting and debiasing expert judgments; (3) building a mathematical model to implement Monte Carlo simulation; and (4) providing the probability distribution function (PDF) of project financial parameters. Results of this paper are of interest to practitioners involved in contractual negotiations as well as those who are responsible for developing financial framework of upstream service contracts
A Seven-Day Remote Intervention to Manage Food Cravings and Emotions during the COVID-19 Pandemic
No full textExposure to stress during the COVID-19 pandemic, with the subsequent potential for unpleasant emotions, increases risk of emotional eating. Results from an international survey showed an increase in reported eating and weight as a consequence of the COVID-19 pandemic (Ruiz et al., 2021.) Targeting eating behaviour through provision of remote self-help interventions that would not require the presence of a practitioner is, therefore, a critical strategy to ameliorate the impact of COVID-19 and is the focus of this study
Social responsibility in micro businesses in an African context: towards a theoretical understanding
Get PDFSmall businesses often engage in social responsibility (SR) without knowing it or without referring to their actions as SR. This is particularly the case in developing countries where the idea of SR is seen as synonymous with philanthropy. While the literature on small business social responsibility is growing, our understanding of the context-specific determinants of responsible practices in microbusinesses (those that employ less than 10 employees) that dominate the business landscape in many developing countries is still limited. In this paper, we address this gap and offer a theoretical understanding of how microbusiness owner-managers understand and approach SR by drawing on rich qualitative data collected from Nigeria—Africa’s largest economy. We utilise Social Representations Theory to understand (1) how and why microbusiness owner-managers limit their understanding of SR to philanthropic activities and (2) the wide range of practices, including philanthropic activities, that account for their overall Responsible Business Practices (RBPs)—those practices that enable them to act responsibly towards their stakeholders and/or operating environments. We find that owner-managers’ representations of SR are anchored primarily on an idiosyncratic ethical tendency and inclination towards the creation of social/communal harmony by “giving back to society” and objectified via actions deriving from three “giving back” orientations, namely Core Philanthropism, Social Problem Solving, and Empowering. We model microbusiness owner-managers’ RBPs, highlighting the intersectional interplay of the voluntary (SR as philanthropy) and non-voluntary (self-regulatory and legal) dimensions of RBPs. Finally, we discuss the key findings in relation to the extant literature and to policymakers and managers
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