153 research outputs found
Self-stabilised fractality of sea-coasts through damped erosion
Erosion of rocky coasts spontaneously creates irregular seashores. But the
geometrical irregularity, in turn, damps the sea-waves, decreasing the average
wave amplitude. There may then exist a mutual self-stabilisation of the waves
amplitude together with the irregular morphology of the coast. A simple model
of such stabilisation is studied. It leads, through a complex dynamics of the
earth-sea interface, to the appearance of a stationary fractal seacoast with
dimension close to 4/3. Fractal geometry plays here the role of a morphological
attractor directly related to percolation geometry.Comment: 4 pages, 5 figure
A trophic bottleneck?: The ecological role of trout‐perch P ercopsis omiscomaycus in S aginaw B ay, L ake H uron
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/97230/1/jai12023.pd
Participant expectations and experiences of a tailored physiotherapy intervention for people with Parkinson’s and a history of falls
This is the author accepted manuscript. The final version is available from Taylor & Francis via the DOI In this recordPurpose
People with Parkinson’s are twice as likely to fall as older people within the general
population. This longitudinal qualitative study was part of a larger programme of research
including a randomised controlled trial to test the effectiveness of a tailored physiotherapy
intervention. Specific qualitative aims focused on a subsample of trial participants in the
intervention arm of the trial, and comprised the following:
- To explore the expectations of participants about the intervention
- To investigate participants’ experiences of the intervention, and its perceived impacts
- To understand the facilitators and barriers to engagement
Methods
Two semi-structured interviews were completed with a theoretical sample of people with
Parkinson’s from the intervention arm, initially after randomisation but before the
intervention commenced, and then again six months later.
Results
Forty two participants out of a large clinical trial were interviewed initially, with 37 agreeing
to a second interview at six months. Prior experience of rehabilitation plus information
accessed through the trial consent procedure informed participants’ realistic expectations.
Most found the level of the intervention acceptable, and perceived a range of benefits.
However, views about equipment provided were more equivocal. The biggest barriers to
participation were time and motivation, whilst social support facilitated engagement with the
intervention.
Conclusion
This study is the first to capture expectations about participation in a programme of exercises
and strategies. It highlights that previous challenges to engagement in physical exercises and
activities are not a barrier to future participation and provides new insights into the role of
equipment and technology in programmes of physical activity for people with Parkinson’s.
The challenge of ensuring that programmes of exercise and strategies become an embedded
feature of everyday life is highlighted, particularly alongside busy social engagements and
leisure pursuits.National Institute for Health Research (NIHR
Re-examining the effect of door-to-balloon delay on STEMI outcomes in the context of unmeasured confounders: a retrospective cohort study
Literature studying the door-to-balloon time-outcome relation in coronary intervention is limited by the potential of residual biases from unobserved confounders. This study re-examines the time-outcome relation with further consideration of the unobserved factors and reports the population average effect. Adults with ST-elevation myocardial infarction admitted to one of the six registry participating hospitals in Australia were included in this study. The exposure variable was patient-level door-to-balloon time. Primary outcomes assessed included in-hospital and 30 days mortality. 4343 patients fulfilled the study criteria. 38.0% (1651) experienced a door-to-balloon delay of >90 minutes. The absolute risk differences for in-hospital and 30-day deaths between the two exposure subgroups with balanced covariates were 2.81 (95% CI 1.04, 4.58) and 3.37 (95% CI 1.49, 5.26) per 100 population. When unmeasured factors were taken into consideration, the risk difference were 20.7 (95% CI −2.6, 44.0) and 22.6 (95% CI −1.7, 47.0) per 100 population. Despite further adjustment of the observed and unobserved factors, this study suggests a directionally consistent linkage between longer door-to-balloon delay and higher risk of adverse outcomes at the population level. Greater uncertainties were observed when unmeasured factors were taken into consideration
A History of Universalism: Conceptions of the Internationality of Science from the Enlightenment to the Cold War
That science is fundamentally universal has been proclaimed innumerable times. But the precise geographical meaning of this universality has changed historically. This article examines conceptions of scientific internationalism from the Enlightenment to the Cold War, and their varying relations to cosmopolitanism, nationalism, socialism, and 'the West'. These views are confronted with recent tendencies to cast science as a uniquely European product
Malefactors of great wealth!
"A case on appeal from Judge Lynch to the Court of fair play; argument. R.A. Benedict of counsel for defendant."Mode of access: Internet
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