253 research outputs found
The significance of the transition of Supervisory Control and Data Acquisition (SADA) Systems to TCP/IP platforms
SCADA system security is a significant United States national security issue based on the systems’ vulnerabilities and the cyber threats that seek to exploit them. Within the last fifteen years as SCADA systems have collectively transitioned to Transmission Control Protocol/ Internet Protocol (TCP/IP) networks, analysts and policy-makers have expressed increased concern over the general security and protection of SCADA systems, which are responsible for monitoring and controlling our nation’s critical infrastructure. SCADA systems are susceptible based on their ease of entry and their attractiveness as a target. In addition, there a number of cyber threats such as hackers and malware, insiders, terrorist organizations and state actors that are dangerous based on their intent and capabilities. U.S. government engagement with private sector owners and operators of critical infrastructures is essential for mitigating the abundant threats that characterize cyber-terrorism
Understanding Shoot and Root Development
Shoot and root development of the grass tiller is presented as a series of events on the tiller axis. Leaf, tiller bud, true stem, and root development are successive events in the life cycle of a single phytomer and the tiller is a co-ordinated series of phytomers, successive phytomers being progressively more advanced than the previous phytomer. In reviewing the individual growth processes of leaf, tiller, true stem, and root formation, fundamental determinants of light and nutrient capture are examined and examples presented to illustrate the link between component processes, plant morphogenesis, and plant performance. An example of the application of this understanding in plant improvement is given
Improving Practice in Supported Decision-Making and Mental Capacity Assessment
Current models of evidence-based practice are predicated on the inclusion of patients / service users in decisions about their healthcare. In the United Kingdom (UK), healthcare policy and legislation requires practitioners to provide support with decision-making and, if necessary, complete mental capacity assessments to identify if service users can make informed decisions. People with communication disabilities may have difficulties understanding, thinking and talking about decisions and may require communication support. In this paper, I discuss the current challenges associated with mental capacity assessment and supported decision-making. I propose that healthcare professionals should look beyond legal and policy imperatives to consider the ethical foundations for their practice, when they face such challenges. I compare two conceptual approaches to ethical reasoning. I describe a practical solution to the clinical challenge – the development of the MCAST, a toolkit to support multidisciplinary staff to assess mental capacity and provide support to service users with communication disabilities during the decision-making proces
‘It brings the lads together’: A critical exploration of older men’s experiences of a weight management programme delivered through a Healthy Stadia project
Older men whose weight is considered unhealthy may experience particular barriers that can restrict their adoption of health improvement interventions. Despite promising findings recommending the use of sports settings to facilitate health promotion with men, little evidence has addressed older men’s health needs for, or experiences of, these settings. Using a qualitative methodology, this study explored the experiences of 14 ageing men attending a football-led weight management programme delivered at a community sports setting. The thematic analysis of semi-structured interviews elucidates important insights regarding the provision of sports-led health improvement interventions for this population. Men especially valued the opportunity to play sports and do physical activity in an environment that promotes ‘inclusive’ competition and caring interpersonal relationships. Implicit in the findings is the key role of practitioners in promoting social engagement. We conclude the paper with key practical implications of this research
Data set for COVID-19 Vaccine Uptake and Hesitancy Survey in Northern Ireland and Republic of Ireland: Applying the Theory of Planned Behaviour
Despite mass progress in COVID-19 vaccination uptake, vaccine hesitancy or anti-vax information has been reported that can delay public acceptance of a vaccine. An online cross-sectional survey (n=439) assessed COVID-19 vaccine uptake and hesitancy in adults in Northern Ireland and the Republic of Ireland. Participants completed an adapted version of the Theory of Planned Behaviour Vaccine Questionnaire, the Vaccine Attitudes Scale (VAX), Vaccine Confidence Scale, and questions on previous experience of COVID-19
A crossover randomised controlled trial of oral mandibular advancement devices for obstructive sleep apnoea-hypopnoea (TOMADO)
Rationale Mandibular advancement devices (MADs)
are used to treat obstructive sleep apnoea-hypopnoea
syndrome (OSAHS) but evidence is lacking regarding
their clinical and cost-effectiveness in less severe disease.
Objectives To compare clinical- and cost-effectiveness
of a range of MADs against no treatment in mild to
moderate OSAHS.
Measurements and methods This open-label,
randomised, controlled, crossover trial was undertaken at
a UK sleep centre. Adults with Apnoea-Hypopnoea Index
(AHI) 5–<30/h and Epworth Sleepiness Scale (ESS) score
≥9 underwent 6 weeks of treatment with three nonadjustable
MADs: self-moulded (SleepPro 1; SP1);
semi-bespoke (SleepPro 2; SP2); fully-bespoke MAD
(bMAD); and 4 weeks no treatment. Primary outcome
was AHI scored by a polysomnographer blinded to
treatment. Secondary outcomes included ESS, quality of
life, resource use and cost.
Main results 90 patients were randomised and 83
were analysed. All devices reduced AHI compared with
no treatment by 26% (95% CI 11% to 38%, p=0.001)
for SP1, 33% (95% CI 24% to 41%) for SP2 and 36%
(95% CI 24% to 45%, p<0.001) for bMAD. ESS was
1.51 (95% CI 0.73 to 2.29, p<0.001, SP1) to 2.37
(95% CI 1.53 to 3.22, p<0.001, bMAD) lower than no
treatment (p<0.001 for all). Compliance was lower for
SP1, which was the least preferred treatment at trial exit.
All devices were cost-effective compared with no
treatment at a £20 000/quality-adjusted life year (QALY)
threshold. SP2 was the most cost-effective up to
£39 800/QALY.
Conclusions Non-adjustable MADs achieve clinically
important improvements in mild to moderate OSAHS and
are cost-effective
Network analysis identifies proinflammatory plasma cell polarization for secretion of ISG15 in human autoimmunity
Plasma cells (PCs) as effectors of humoral immunity produce Igs to match pathogenic insult. Emerging data suggest more diverse roles exist for PCs as regulators of immune and inflammatory responses via secretion of factors other than Igs. The extent to which such responses are preprogrammed in B-lineage cells or can be induced in PCs by the microenvironment is unknown. In this study, we dissect the impact of IFNs on the regulatory networks of human PCs. We show that core PC programs are unaffected, whereas PCs respond to IFNs with distinctive transcriptional responses. The IFN-stimulated gene 15 (ISG15) system emerges as a major transcriptional output induced in a sustained fashion by IFN-α in PCs and linked both to intracellular conjugation and ISG15 secretion. This leads to the identification of ISG15-secreting plasmablasts/PCs in patients with active systemic lupus erythematosus. Thus, ISG15-secreting PCs represent a distinct proinflammatory PC subset providing an Ig-independent mechanism of PC action in human autoimmunity
Treatment seeking and antibiotic use for urinary tract infection symptoms in the time of COVID-19 in Tanzania and Uganda
Funding: CARE: COVID-19 and Antimicrobial Resistance in East Africa – impact and response is a Global Effort on COVID-19 (GECO) Health Research Award (MR/V036157/1) funded by UK Research and Innovation (Medical Research Council) and the Department of Health and Social Care (National Institute for Health Research).Background There is still little empirical evidence on how the outbreak of coronavirus disease 2019 (COVID-19) and associated regulations may have disrupted care-seeking for non-COVID-19 conditions or affected antibiotic behaviours in low- and middle-income countries (LMICs). We aimed to investigate the differences in treatment-seeking behaviours and antibiotic use for urinary tract infection (UTI)-like symptoms before and during the pandemic at recruitment sites in two East African countries with different COVID-19 control policies: Mbarara, Uganda and Mwanza, Tanzania. Methods In this repeated cross-sectional study, we used data from outpatients (pregnant adolescents aged >14 and adults aged >18) with UTI-like symptoms who visited health facilities in Mwanza, Tanzania and Mbarara, Uganda. We assessed the prevalence of self-reported behaviours (delays in care-seeking, providers visited, antibiotics taken) at three different time points, labelled as ‘pre-COVID-19 phase’ (February 2019 to February 2020), ‘COVID-19 phase 1’ (March 2020 to April 2020), and ‘COVID-19 phase 2’ (July 2021 to February 2022). Results In both study sites, delays in care-seeking were less common during the pandemic than they were in the pre-COVID phase. Patients in Mwanza, Tanzania had shorter care-seeking pathways during the pandemic compared to before it, but this difference was not observed in Mbarara, Uganda. Health centres were the dominant sources of antibiotics in both settings. Over time, reported antibiotic use for UTI-like symptoms became more common in both settings. During the COVID-19 phases, there was a significant increase in self-reported use of antibiotics like metronidazole (<30% in the pre-COVID-19 phase to 40% in COVID phase 2) and doxycycline (30% in the pre-COVID-19 phase to 55% in COVID phase 2) that were not recommended for treating UTI-like symptoms in the National Treatment Guidelines in Mbarara, Uganda. Conclusions There was no clear evidence that patients with UTI-like symptoms attending health care facilities had longer or more complex treatment pathways despite strict government-led interventions related to COVID-19. However, antibiotic use increased over time, including some antibiotics not recommended for treating UTI, which has implications for future antimicrobial resistance.Publisher PDFPeer reviewe
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