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Bilateral abducens nerve palsy due to septic thrombophlebitis.
PurposeTo report a case of septic thrombophlebitis producing bilateral abducens nerve palsy.ObservationA 65 year-old woman with recent sinus surgery experienced the onset of horizontal diplopia during treatment for bacteremia. Computer tomography of head and a neck ultrasonography showed right internal jugular vein occlusion. Ophthalmology examination was consistent with bilateral abducens nerve palsy. She was treated with systemic antibiotics and antiplatelet therapy with resolution of the internal jugular vein occlusion. The diplopia improved over a six-months.Conclusion and importanceOur patient had Lemierre syndrome with an unusual presentation. The patient was treated for septic thrombophlebitis with a resolution of her ocular symptoms
John Constable, Luke Howard, and the Aesthetics of Climate
In early nineteenth-century Britain, the painter John Constable and meteorologist Luke Howard experimented with new aesthetic forms in response to the challenges climate posed to representation. In landscape paintings, sketches, tables, and graphs, the artist and scientist grappled with climate’s temporal scale, which extended beyond the domain of immediate “feeling” associated with landscape representation. Their efforts to construct a stable representation of England’s climate took shape against the polluted atmosphere of industrial, imperial London, and in tandem with the modern state’s disciplinary visuality. In their work, an aesthetics of climate emerged that was responsive to an environment increasingly known through numeric data and abstraction
Evaluation of patient perception towards dynamic health data sharing using blockchain based digital consent with the Dovetail digital consent application : a cross sectional exploratory study
Background
New patient-centric integrated care models are enabled by the capability to exchange the patient’s data amongst stakeholders, who each specialise in different aspects of the patient’s care. This requires a robust, trusted and flexible mechanism for patients to offer consent to share their data. Furthermore, new IT technologies make it easier to give patients more control over their data, including the right to revoke consent. These characteristics challenge the traditional paper-based, single-organisation-led consent process. The Dovetail digital consent application uses a mobile application and blockchain based infrastructure to offer this capability, as part of a pilot allowing patients to have their data shared amongst digital tools, empowering patients to manage their condition within an integrated care setting.
Objective
To evaluate patient perceptions towards existing consent processes, and the Dovetail blockchain based digital consent application as a means to manage data sharing in the context of diabetes care.
Method
Patients with diabetes at a General Practitioner practice were recruited. Data were collected using focus groups and questionnaires. Thematic analysis of the focus group transcripts and descriptive statistics of the questionnaires was performed.
Results
There was a lack of understanding of existing consent processes in place, and many patients did not have any recollection of having previously given consent. The digital consent application received favourable feedback, with patients recognising the value of the capability offered by the application. Patients overwhelmingly favoured the digital consent application over existing practice.
Conclusions
Digital consent was received favourably, with patients recognising that it addresses the main limitations of the current process. Feedback on potential improvements was received. Future work includes confirmation of results in a broader demographic sample and across multiple conditions
Variational quantum Monte Carlo simulations with tensor-network states
We show that the formalism of tensor-network states, such as the matrix
product states (MPS), can be used as a basis for variational quantum Monte
Carlo simulations. Using a stochastic optimization method, we demonstrate the
potential of this approach by explicit MPS calculations for the transverse
Ising chain with up to N=256 spins at criticality, using periodic boundary
conditions and D*D matrices with D up to 48. The computational cost of our
scheme formally scales as ND^3, whereas standard MPS approaches and the related
density matrix renromalization group method scale as ND^5 and ND^6,
respectively, for periodic systems.Comment: 4+ pages, 2 figures. v2: improved data, comparisons with exact
results, to appear in Phys Rev Let
Contact area of rough spheres: Large scale simulations and simple scaling laws
We use molecular simulations to study the nonadhesive and adhesive
atomic-scale contact of rough spheres with radii ranging from nanometers to
micrometers over more than ten orders of magnitude in applied normal load. At
the lowest loads, the interfacial mechanics is governed by the contact
mechanics of the first asperity that touches. The dependence of contact area on
normal force becomes linear at intermediate loads and crosses over to Hertzian
at the largest loads. By combining theories for the limiting cases of nominally
flat rough surfaces and smooth spheres, we provide parameter-free analytical
expressions for contact area over the whole range of loads. Our results
establish a range of validity for common approximations that neglect curvature
or roughness in modeling objects on scales from atomic force microscope tips to
ball bearings.Comment: 2 figures + Supporting Materia
Finite-size scaling in the interfacial stiffness of rough elastic contacts
The total elastic stiffness of two contacting bodies with a microscopically
rough interface has an interfacial contribution K that is entirely attributable
to surface roughness. A quantitative understanding of K is important because it
can dominate the total mechanical response and because it is proportional to
the interfacial contributions to electrical and thermal conductivity in
continuum theory. Numerical simulations of the dependence of K on the applied
squeezing pressure p are presented for nominally flat elastic solids with a
range of surface roughnesses. Over a wide range of p, K rises linearly with p.
Sublinear power-law scaling is observed at small p, but the simulations reveal
that this is a finite-size effect. We derive accurate, analytical expressions
for the exponents and prefactors of this low-pressure scaling of K by extending
the contact mechanics theory of Persson to systems of finite size. In agreement
with our simulations, these expressions show that the onset of the low-pressure
scaling regime moves to lower pressure as the system size increases.Comment: Supplementary material is available at arXiv:1210.4255, 5 pages, 3
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