452 research outputs found

    Parental approaches to enhancing young people's online safety

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    Although there is evidence that young people are tech-savvy with the know-how to keep themselves safe online, this review has demonstrated that the technological generational gap remains large. There are divergent opinions over what constitutes online risks, dangers or threats to young people online. Online environments fostering anonymity, for example, can be perceived as both a risk and benefit to young people. Conversation between young people and adults regarding online safety is imperative to parents understanding cybersafety and young people staying safe online. It remains crucial that research is conducted to explore these questions with adults and young people

    Vortex Rings in two Component Bose-Einstein Condensates

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    We study the structure of the vortex core in two-component Bose-Einstein condensates. We demonstrate that the order parameter may not vanish and the symmetry may not be restored in the core of the vortex. In this case such vortices can form vortex rings known as vortons in particle physics literature. In contrast with well-studied superfluid 4He^4He, where similar vortex rings can be stable due to Magnus force only if they move, the vortex rings in two-component BECs can be stable even if they are at rest. This beautiful effect was first discussed by Witten in the cosmic string context, where it was shown that the stabilization occurs due to condensation of the second component of the field in the vortex core. This second condensate trapped in the core may carry a current along the vortex ring counteracting the effect of string tension that causes the loop to shrink. We speculate that such vortons may have been already observed in the laboratory. We also speculate that the experimental study of topological structures in BECs can provide a unique opportunity to study cosmology and astrophysics by doing laboratory experiments.Comment: 21 pages, 2 figure

    Analysing public service outsourcing: the value of a regulatory perspective

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    This article draws on findings from two longitudinal case studies of voluntary organisations engaged in delivering social care services via purchaser ā€“ provider relations with local authorities. The study focuses on changes to contractual relations, employment conditions in provider organisations and service quality. The article argues the influence of the market on these changes can only be adequately comprehended by rooting the analysis in an understanding of the way in which surrounding regulatory frameworks shape its structure and operation. In doing so, it reveals how in an era of shifting market conditions characterised by greater competition and dramatic local authority cuts, a ā€˜softā€™ regulatory framework offers little support to partnership relations between voluntary organisations and local authorities. Instead, the regulatory environment undermines financial security among voluntary organisations, degrades employment conditions in them and raises concerns regarding their service quality

    The potential of trading activity income to fund third sector organisations operating in deprived areas

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    In the United Kingdom, as in other countries, Third Sector Organisations (TSOs) have been drawn towards income sources associated with trading activities (Teasdale, 2010), but many remain reliant on grant funding to support such activities (Chell, 2007). Using a multivariate analysis approach and data from the National Survey of Charities and Social Enterprises (NSCSE), it is found that trading activities are used relatively commonly in deprived areas. These organisations are also more likely to attempt to access public sector funds. This suggests policy-makers need to consider the impact of funding cuts on TSOs in the most deprived areas as TSOs are unlikely achieve their objectives without continuing support

    Childrenā€™s access to beneficial information in Arab states: Implementation of Article 17 of the Convention on the Rights of the Child in Egypt, Morocco and the United Arab Emirates

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    In theory, the multiple platforms and transnational nature of digital media, along with a related proliferation of diverse forms of content, make it easier for childrenā€™s right to access socially and culturally beneficial information and material to be realised, as required by Article 17 of the UN Convention on the Rights of the Child (CRC). Drawing on data collected during research on childrenā€™s screen content in the Arab world, combined with scrutiny of documents collated by the Committee on the Rights of the Child, which monitors compliance with the CRC, this paper explores how three Arab countries, Egypt, Morocco and the United Arab Emirates, presented their efforts to implement Article 17 as part of their periodic reporting on their overall performance in putting the CRC into effect. It uncovers tensions over the relationship between provision, participation and protection in relation to media, reveals that Article 17 is liable to get less attention than it deserves in contexts where governments keep a tight grip on media, and that, by appearing to give it a lower priority, all parties neglect the intersection between human rights in relation to media and childrenā€™s rights

    Relationship of the metabolic syndrome to carotid ultrasound traits

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    BACKGROUND: The metabolic syndrome is associated with increased vascular disease risk. We evaluated two carotid ultrasound measurements, namely intima media thickness and total plaque volume, in a Canadian Oji-Cree population with a high metabolic syndrome prevalence rate. METHODS: As part of the Sandy Lake Complications Prevalence and Risk Factor Study, 166 Oji-Cree subjects (baseline metabolic syndrome prevalence, 44.0%, according to the National Cholesterol Education Program Adult Treatment Panel III guidelines) were examined using a high-resolution duplex ultrasound scanner. RESULTS: Image analysis showed that mean intima media thickness was elevated in subjects with the metabolic syndrome (818 Ā± 18 vs 746 Ā± 20 Ī¼m), as was total plaque volume (125 Ā± 26 vs 77.3 Ā± 17.0 mm(3)). However, after adjustment for age and sex, the differences were significant only for intima media thickness (P = 0.039). Furthermore, a significant trend towards increased intima media thickness was observed with increasing numbers of metabolic syndrome components: mean intima media thickness was highest among individuals with all five metabolic syndrome components compared to those with none (866 Ā± 55 vs 619 Ā± 23 Ī¼m, P = 0.0014). A similar, but non-significant trend was observed for total plaque volume. CONCLUSION: This is the first study of the relationship between the metabolic syndrome and two distinct carotid ultrasound traits measured in the same individuals. The results suggest that standard intima media thickness measurement shows a more consistent and stronger association with the metabolic syndrome than does total plaque volume

    Outcome of coronary plaque burden: a 10-year follow-up of aggressive medical management

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    <p>Abstract</p> <p>Background</p> <p>The effect of aggressive medical therapy on quantitative coronary plaque burden is not generally known, especially in ethnic Chinese.</p> <p>Aims</p> <p>We reasoned that Cardiac CT could conveniently quantify early coronary atherosclerosis in our patient population, and hypothesized that serial observation could differentiate the efficacy of aggressive medical therapy regarding progression and regression of the atherosclerotic process, as well as evaluating the additional impact of life-style modification and the relative effects of the application of statin therapy.</p> <p>Methods</p> <p>We employed a standardized Cardiac CT protocol to serially scan 113 westernized Hong Kong Chinese individuals (64 men and 49 women) with Chest Pain and positive coronary risk factors. In all cases included for this serial investigation, subsequent evaluation showed no significantly-obstructive coronary disease by functional studies and angiography. After stringent risk factor modification, including aggressive statin therapy to achieve LDL-cholesterol lowering conforming to N.C.E.P. ATP III guidelines, serial CT scans were performed 1-12 years apart for changes in coronary artery calcification (CAC), using the Agatston Score (AS) for quantification.</p> <p>Results</p> <p>At baseline, the mean AS was 1413.6 for males (mean age 54.4 years) and 2293.3 for females (mean age 62.4 years). The average increase of AS in the entire study population was 24% per year, contrasting with 16.4% per year on strict risk factor modification plus statin therapy, as opposed to 33.2% per year for historical control patients (p < 0.001). Additionally, 20.4% of the 113 patients demonstrated decreasing calcium scores. Medical therapy also yielded a remarkably low adverse event rate during the follow-up period --- 2 deaths, 2 strokes and only 1 case requiring PCI.</p> <p>Conclusions</p> <p>This study revealed that aggressive medical therapy can positively influence coronary plaque aiding in serial regression of calcium scores.</p
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