2,922 research outputs found
Are share prices an economic barometer?: on the relationship between share prices and mental health
This paper investigates the relationship between share prices and mental health, exploiting the availability of interview dates in the British Household Panel Survey to match the level and changes in the FTSE All Share price index to respondents over the period 1991-2008. We present evidence that the level, 6 month and yearly changes in the share price index are associated with better mental health while greater uncertainty, as measured by index volatility, is associated with poorer mental well-being. Finally, using several proxies of investor status, we find little evidence that this relationship is confined to holders of equity based assets, suggesting that the observed relationship does not arise via wealth effects. Instead, it appears as though share prices matter to mental health because they perform the role of economic barometer
F and D Values with Explicit Flavor Symmetry Breaking and \Delta s Contents of Nucleons
We propose a new model for describing baryon semi-leptonic decays for
estimating and values with explicit breaking effects of both SU(3) and
SU(2) flavor symmetry, where all possible SU(3) and SU(2) breaking effects are
induced from an effective interaction. An overall fit including the weak
magnetism form factor yields and with
d.o.f. with and . The spin content of strange quarks is estimated from the
obtained values and , and the nucleon spin problem is re-examined.
Furthermore, the unmeasured values of and for other hyperon
semi-leptonic decays are predicted from this new formula.Comment: 15 pages, 1 figure, final version to appear in PR
Scalable quantum computation with fast gates in two-dimensional microtrap arrays of trapped ions
We theoretically investigate the use of fast pulsed two-qubit gates for
trapped ion quantum computing in a two-dimensional microtrap architecture. In
one dimension, such fast gates are optimal when employed between nearest
neighbours, and we examine the generalisation to a two-dimensional geometry. We
demonstrate that fast pulsed gates are capable of implementing high-fidelity
entangling operations between ions in neighbouring traps faster than the
trapping period, with experimentally demonstrated laser repetition rates.
Notably, we find that without increasing the gate duration, high-fidelity gates
are achievable even in large arrays with hundreds of ions. To demonstrate the
usefulness of this proposal, we investigate the application of these gates to
the digital simulation of a 40-mode Fermi-Hubbard model. This also demonstrates
why shorter chains of gates required to connect arbitrary pairs of ions makes
this geometry well suited for large-scale computation
âEthnic groupâ, the state and the politics of representation
The assertion, even if only by implication, that âethnic groupâ categories represent ârealâ tangible entities, indeed identities, is commonplace not only in the realms of political and policy discourse but also amongst contemporary social scientists. This paper, following Brubaker (2002), questions this position in a number of key respects: of these three issues will dominate the discussion that follows.
First, there is an interrogation of the proposition that those to whom the categories/labels refer constitute sociologically meaningful âgroupsâ as distinct from (mere) human collectivities. Secondly, there is the question of how these categories emerge, i.e. exactly what series of events, negotiations and contestations lie behind their construction and social acceptance. Thirdly, and as a corollary to the latter point, we explore the process of reification that leads to these categories being seen to represent âreal things in the worldâ (ibid.)
Piloting data linkage in a prospective cohort study of a GP referral scheme to avoid unnecessary emergency department conveyance
BACKGROUND: UK Ambulance services are under pressure to safely stream appropriate patients away from the Emergency Department (ED). Even so, there has been little evaluation of patient outcomes. We investigated differences between patients who are conveyed directly to ED after calling 999 and those referred by an ambulance crew to a novel GP referral scheme. METHODS: This was a prospective study comparing patients from two cohorts, one conveyed directly to the ED (nâ=â4219) and the other referred to a GP by the on-scene paramedic (nâ=â321). To compare differences in patient outcomes, we include follow-up data of a smaller subset of each cohort (up to nâ=â150 in each) including hospital admission, history of long-term illness, previous ED attendance, length of stay, hospital investigations, internal transfers, 30-day re-admission and 10-month mortality. RESULTS: Older individuals, females, and those with minor incidents were more likely to be referred to a GP than conveyed directly to ED. Of those patients referred to the GP, only 22.4% presented at ED within 30âdays. These patients were more likely to be admitted then than were those initially conveyed directly to ED (59% vs 31%). Those conveyed to ED had a higher risk of death compared to those who were referred to the GP (HR: 2.59; 95% CI 1.14â5.89), however when analyses were restricted to those who presented at ED within 30âdays, there was no difference in mortality risk (HR: 1.45; 95% CI 0.58â3.65). CONCLUSIONS: Despite limited data and a small sample size, there were differences between patients conveyed directly to ED and those who were referred into GP care. Initial evidence suggests that referring individuals to a GP may provide an appropriate and safe alternative path of care. This pilot study demonstrated a need for larger scale, methodologically rigorous study to demonstrate the benefits of alternative conveyance schemes and recommend changes to the current system of urgent and emergency care
Tackling Ageing Continence through Theory, Tools & Technology
Originally presented at âAging and Society: An Interdisciplinary Conferenceâ, University of California, Berkeley (2011), this article was double-blind peer reviewed, receiving scores of 96% and 73%. It outlines the interdisciplinary research of the cross-Research-Council-funded New Dynamics of Ageing Tackling Ageing Continence through Theory Tools & Technology (TACT3) project (2008â12), which brought together designers, social scientists, bio-engineers, chemists and care-management services to understand the challenges faced by an ageing population in the management of continence. Bichardâs Work Package, âChallenging Environmental Barriers to Continenceâ, explored the need for public toilet provision as essential for quality of life, health and well-being. It developed a life-course methodology that considered ageing from birth through to advanced age (0â101 years), and involved inclusive design research with members of the public and providers of facilities to assess public expectations and provider limitations in service provision.
As co-investigator on TACT3, this research built on Bichardâs previous work for the VivaCity2020 consortium (Bichard REF Output 2). Whereas the VivaCity2020 work focused on architectural barriers in toilet provision, the TACT3 project examined the problem in service provision, and how, through inclusive design research, service-design solutions might be explored and implemented.
Bichardâs contribution to the TACT3 project produced The Great British Public Toilet Map (http://greatbritishpublictoiletmap.rca.ac.uk/), a public participation website that provides information and locations of public toilets, encouraging members of the public to contact relevant local authorities that have not released information in the format of Open Data. Secondary analysis of TACT3 data for references to issues of personal safety and community initiative in toilet provision was used for the ESRC-funded Robust Accessible Toilets (RATs) project (2011) and produced Publicly Accessible Toilets: An Inclusive Design Guide (2011). Related published conference papers include those in âCumulus 2010â (China) and âInclude 2011â (UK)
Gluon polarization in the proton
We combine heavy-quark renormalization group arguments with our understanding
of the nucleon's wavefunction to deduce a bound on the gluon polarization Delta
g in the proton. The bound is consistent with the values extracted from spin
experiments at COMPASS and RHIC.Comment: 4 page
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