1,899 research outputs found
Using an ontology for interoperability and browsing of museum, library and archive information
Ontologies play an important part in the development of the future ‘semantic web’; the CIDOC conceptual reference model (CRM) is an ontology aimed at the cultural heritage domain. This paper describes a Concept Browser, developed for the EU/IST-funded SCULPTEUR project (semantic and content-based multimedia exploitation for European benefit environment (programme IST-2001-no. 35372); May 2002 to May 2005), which is able to access different museum information systems through a common ontology, the CRM. The development of this Concept Browser has required mappings from the legacy museum database systems to the CRM. The crucial process of creating the mappings is described, using the C2RMF catalogue (EROS) and library databases as a case study
Tricritical scaling at the N_t=6 chiral phase transition for 2 flavour lattice QCD with staggered quarks
We have simulated lattice QCD directly in the chiral limit of zero quark mass
by adding an additional, irrelevant 4-fermion interaction to the standard
action. Using lattices having temporal extent of six and spatial extents of
twelve and eighteen, we find that the theory with 2 massless staggered quark
flavors has a second order finite temperature phase transition. The critical
exponents , and are measured and favour tricritical
behaviour over that expected by universality arguments. The pion screening mass
is consistent with zero below the transition, but is degenerate with the
nonzero mass above the transition, indicating the restoration of
chiral symmetry.Comment: 12 pages, 3 postscript figures Letter has been rewritten to reflect a
reinterpretation of our results as indicating tricritical critical indices
rather than those predicted by standard universality arguments. Some
additional analysis which supports this interpretation is included. The
comparison of our methods with those of others has been expande
Synthesis and initial evaluation of a novel fluorophore for selective FMDV 3C Protease detection
The development and evaluation of a Boc-AL(Boc)Q(Trt)-AMC fluorophore to detect 3C Protease, produced by Foot and Mouth Disease Virus (FMDV) is reported, with a view to a potential use as a rapid screen for FMDV infected livestock The peptide-linked conjugate fluorophore is evaluated in vitro for sensitivity, specificity, stability and rapidity and shows statistically significant increases in fluorescence when exposed to physiologically relevant concentrations of 3C Protease and selectivity when compared with other common proteases likely to be located, typically in the absence of FMDV. The stability of deprotected Boc-AL(Boc)Q(Trt)-AMC is reported as a limitation of this probe
Characteristics of older unpaid carers in England: A study of social patterning from the English Longitudinal Study of Ageing
\ua9 2024 The Author(s). Published by Oxford University Press on behalf of the British Geriatrics Society.Background: A growing number of older people provide unpaid care, but contemporary research evidence on this group is limited. Aim: This study aims to describe the characteristics of older people who provide unpaid care and how these vary by socioeconomic position. Methods: Using recent information from the English Longitudinal Study of Ageing (ELSA wave 9, 2019), we analysed cross-sectional data on 1,282 unpaid carers aged ≥50. Data on sociodemographics, health, social wellbeing, care intensity and caregiver-recipient relationships were extracted. Total net non-pension wealth quintiles were used as a relative measure of socioeconomic position. Differences between the poorest and richest wealth quintiles were examined through logistic regression. Findings: Most older carers in ELSA were female and looking after another older person. Poor mental and physical health and social isolation were common, and socially patterned. Compared with carers in the middle wealth group, the poorest group were more likely to be living with the person they cared for (odds ratio (OR) 1.56 [95% confidence interval (CI) 1.03-2.36]) and more likely to experience loneliness (OR 2.29 [95% CI 1.42-3.69]), dependency (i.e.The need for help with activities of daily living) (OR 1.62 [95% CI 1.05-2.51]), chronic pain (OR 1.81 [95% CI 1.23-2.67]), a higher number of diseases (OR 1.75 [95% CI 1.15-2.65]) and fair/poor self-rated health (OR 2.59 [95% CI 1.79-3.76]). The poorest carers were also less likely to have a high quality of life (OR 0.51 [95% CI 0.33-0.80]) or be in work (OR 0.33 [95% CI 0.19-0.59]). Conclusion: Our findings suggest that financially disadvantaged unpaid carers (and their households) may have the greatest needs for intervention and support. Focussing resources on this group has potential to address social inequalities
Synthetic scale-up of a novel fluorescent probe and its biological evaluation for surface detection of 'Staphylococcus aureus'
SGPS 9105A: Value of residential care: Review and strategies to advocate for better wages for PHSS
Pathologies of Quenched Lattice QCD at non--zero Density and its Effective Potential
We simulate lattice QCD at non--zero baryon density and zero temperature in
the quenched approximation, both in the scaling region and in the infinite
coupling limit. We investigate the nature of the forbidden region -- the range
of chemical potential where the simulations grow prohibitively expensive, and
the results, when available, are puzzling if not unphysical. At weak coupling
we have explored the sensitivity of these pathologies to the lattice size, and
found that using a large lattice () does not remove them. The
effective potential sheds considerable light on the problems in the
simulations, and gives a clear interpretation of the forbidden region. The
strong coupling simulations were particularly illuminating on this point.Comment: 49 pages, uu-encoded expanding to postscript;also available at
ftp://hlrz36.hlrz.kfa-juelich.de/pub/mpl/hlrz72_95.p
Field Emission Dark Current of Technical Metallic Electrodes
In the framework of the Low Emittance Gun (LEG) project, high gradient
acceleration of a low emittance electron beam will be necessary. In order to
achieve this acceleration a -500 kV, 250 ns FWHM, pulse will be applied in
between two electrodes. Those electrodes should sustain the pulsed field
without arcing, must not outgass and must not emit electrons. Ion back
bombardment, and dark current will be damageable to the electron source as well
as for the low emittance beam. Electrodes of commercially available OFE copper,
aluminium, stainless steel, titanium and molybdenum were tested following
different procedures including plasma glow discharge cleaning.Comment: 22 pages, 6 tables, 10 figures Vs 2 : graphics more readable,
enhanced content Vs 3 : typo correcte
New Spatial Imaginaries for International Curriculum Projects:Creative Diagrams, Mapping Experiments, and Critical Cartography
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