The evidence-base for stroke education in care homes

<b>Summary.</b> <b>Research questions:</b> 1. What are registered care home nurses’ educational priorities regarding stroke care? 2. What are senior care home assistants’ educational priorities regarding stroke care? 3. How do care home nurses conceive stroke care will be delivered in 2010? <b>Study design:</b> This was a 2-year study using focus groups, stroke guidelines, professional recommendations and stroke literature for the development of a questionnaire survey for data collection. Workshops provided study feedback to participants. Data were collected in 2005–2006. <b>Study site:</b> Greater Glasgow NHS Health Board. <b>Population and sample:</b> A stratified random selection of 16 private, 3 voluntary and 6 NHS continuing care homes from which a sample of 115 trained nurses and 19 senior care assistants was drawn. <b>Results:</b> The overall response rate for care home nurses was 64.3% and for senior care assistants, 73.6%. Both care home nurses and senior care assistants preferred accredited stroke education. Care home nurses wanted more training in stroke assessment, rehabilitation and acute interventions whereas senior care assistants wanted more in managing depression, general stroke information and communicating with dysphasic residents. Senior care assistants needed more information on multidisciplinary team working while care home nurses were more concerned with ethical decision-making, accountability and goal setting. <b>Conclusions:</b> Care home staff need and want more stroke training. They are clear that stroke education should be to the benefit of their resident population. Guidelines on stroke care should be developed for care homes and these should incorporate support for continuing professional learning in relation to the resident who has had a stroke

Stroke education for healthcare professionals: making it fit for purpose

<b>Research questions:</b> 1. What are healthcare professionals’ (HCPs) educational priorities regarding stroke care? 2. Do stroke care priorities vary across the primary and secondary sectors? 3. How do HCPs conceive stroke care will be delivered in 2010? <b>Study design:</b> This was a two-year study using focus groups and interviews for instrument development, questionnaires for data collection and workshops to provide study feedback. Data were collected in 2005–06. <b>Study site:</b> One Scottish health board. <b>Inclusion criteria:</b> All National Health Service healthcare professionals working wherever stroke care occurred. <b>Population and sample:</b> Participants were drawn from 4 university teaching hospitals, 2 community hospitals, 1 geriatric medicine day hospital, 48 general practices (GPs), 12 care homes and 15 community teams. The sample comprised 155 doctors, 313 nurses, 133 therapists (physiotherapists, occupational therapists, speech and language therapists), and 29 ‘other HCPs’ (14 dieticians, 7 pharmacists, 2 podiatrists and 6 psychologists). <b>Results:</b> HCPs prefer face-to-face, accredited education but blended approaches are required that accommodate uni- and multidisciplinary demands. Doctors and nurses are more inclined towards discipline-specific training compared to therapists and other healthcare professionals (HCPs). HCPs in primary care and stroke units want more information on the social impact of stroke while those working in stroke units in particular are concerned with leadership in the multidisciplinary team. Nurses are the most interested in teaching patients and carers. <b>Conclusions</b> Stroke requires more specialist stroke staff, the upskilling of current staff and a national education pathway given that stroke care is most effectively managed by specialists with specific clinical skills. The current government push towards a flexible workforce is welcome but should be educationally-sound and recognise the career aspirations of healthcare professionals

Inelastic Sum Rules

The history and present status of several sum rules for deep-inelastic lepton scattering are reviewed, with particular attention to the discovery of scaling, partons, quarks and QCD. Two outstanding issues are then discussed in more detail: the singlet (Ellis-Jaffe) nucleon spin sum rule and the Drell-Hearn-Gerasimov-Iddings sum rule

Metal-catalyst-free growth of silica nanowires and carbon nanotubes using Ge nanostructures

The use of Ge nanostructures is investigated for the metal-catalyst-free growth of silica nanowires and carbon nanotubes (CNTs). Silica nanowires with diameters of 10-50 nm and lengths of ? 1 ?m were grown from SiGe islands, Ge dots, and Ge nanoparticles. High-resolution transmission electron microscopy (HRTEM) and energy dispersive X-ray spectroscopy (EDS) reveal that the nanowires grow from oxide nanoparticles on the sample surface. We propose that the growth mechanism is thermal diffusion of oxide through the GeO2 nanostructures. CNTs with diameters 0.6-2.5 nm and lengths of less than a few ?m were similarly grown by chemical vapor deposition from different types of Ge nanostructures. Raman measurements show the presence of radial breathing mode peaks and the absence of the disorder induced D-band, indicating single walled CNTs with a low defect density. HRTEM images reveal that the CNTs also grow from oxide nanoparticles, comprising a mixture of GeO2 and SiO2

Growth of Carbon Nanotubes on HfO2 towards Highly Sensitive Nano-Sensors

Carbon nanotube (CNT) growth on HfO2 is reported for the first time. The process uses a combination of Ge and Fe nanoparticles and achieves an increase in CNT density from 0.15 to 6.2 mm length/mm2 compared with Fe nanoparticles alone. The synthesized CNTs are assessed by the fabrication of back-gate CNT field-effect transistors with Al source/drain contacts for nano-sensor applications. The devices exhibit excellent p-type behavior with an Ion=Ioff ratio of 105 and a steep sub-threshold slope of 130 mV/dec

The Shifted Coupled Cluster Method: A New Approach to Hamiltonian Lattice Gauge Theories

It is shown how to adapt the non-perturbative coupled cluster method of many-body theory so that it may be successfully applied to Hamiltonian lattice $SU(N)$ gauge theories. The procedure involves first writing the wavefunctions for the vacuum and excited states in terms of linked clusters of gauge invariant excitations of the strong coupling vacuum. The fundamental approximation scheme then consists of i) a truncation of the infinite set of clusters in the wavefunctions according to their geometric {\em size}, with all larger clusters appearing in the Schr\"odinger equations simply discarded, ii) an expansion of the truncated wavefunctions in terms of the remaining clusters rearranged, or ``shifted'', to describe gauge invariant {\em fluctuations} about their vacuum expectation values. The resulting non-linear truncated Schr\"odinger equations are then solved self-consistently and exactly. Results are presented for the case of $SU(2)$ in $d=3$ space-time dimensions.Comment: 13 pages + 5 postscript figures, plain Late

Analysis of interference to cable television due to mobile usage in the Digital Dividend

The start of use of mobile applications in the 800 MHz band, which forms part of the ‘Digital Dividend’, will cause interference to TV signals under certain conditions. The new mobile applications (called LTE, Long Term Evolution) use frequencies also used in cable TV networks. This report examines how much interference may occur when providing digital television over cable networks

The quantum dynamic capacity formula of a quantum channel

The dynamic capacity theorem characterizes the reliable communication rates of a quantum channel when combined with the noiseless resources of classical communication, quantum communication, and entanglement. In prior work, we proved the converse part of this theorem by making contact with many previous results in the quantum Shannon theory literature. In this work, we prove the theorem with an "ab initio" approach, using only the most basic tools in the quantum information theorist's toolkit: the Alicki-Fannes' inequality, the chain rule for quantum mutual information, elementary properties of quantum entropy, and the quantum data processing inequality. The result is a simplified proof of the theorem that should be more accessible to those unfamiliar with the quantum Shannon theory literature. We also demonstrate that the "quantum dynamic capacity formula" characterizes the Pareto optimal trade-off surface for the full dynamic capacity region. Additivity of this formula simplifies the computation of the trade-off surface, and we prove that its additivity holds for the quantum Hadamard channels and the quantum erasure channel. We then determine exact expressions for and plot the dynamic capacity region of the quantum dephasing channel, an example from the Hadamard class, and the quantum erasure channel.Comment: 24 pages, 3 figures; v2 has improved structure and minor corrections; v3 has correction regarding the optimizatio

Perfect state distinguishability and computational speedups with postselected closed timelike curves

Bennett and Schumacher's postselected quantum teleportation is a model of closed timelike curves (CTCs) that leads to results physically different from Deutsch's model. We show that even a single qubit passing through a postselected CTC (P-CTC) is sufficient to do any postselected quantum measurement, and we discuss an important difference between "Deutschian" CTCs (D-CTCs) and P-CTCs in which the future existence of a P-CTC might affect the present outcome of an experiment. Then, based on a suggestion of Bennett and Smith, we explicitly show how a party assisted by P-CTCs can distinguish a set of linearly independent quantum states, and we prove that it is not possible for such a party to distinguish a set of linearly dependent states. The power of P-CTCs is thus weaker than that of D-CTCs because the Holevo bound still applies to circuits using them regardless of their ability to conspire in violating the uncertainty principle. We then discuss how different notions of a quantum mixture that are indistinguishable in linear quantum mechanics lead to dramatically differing conclusions in a nonlinear quantum mechanics involving P-CTCs. Finally, we give explicit circuit constructions that can efficiently factor integers, efficiently solve any decision problem in the intersection of NP and coNP, and probabilistically solve any decision problem in NP. These circuits accomplish these tasks with just one qubit traveling back in time, and they exploit the ability of postselected closed timelike curves to create grandfather paradoxes for invalid answers.Comment: 15 pages, 4 figures; Foundations of Physics (2011