5,128 research outputs found

    Charmonium Absorption in the Meson-exchange Model

    Get PDF
    We review the meson-exchange model for charmonium absorption by hadrons. This includes the construction of the interaction Lagrangians, the determination of the coupling constants, the introduction of form factors, and the predicted cross sections for J/ψJ/\psi absorption by both mesons and nucleons. We further discuss the effects due to anomalous parity interactions, uncertainties in form factors, constraints from chiral symmetry, and the change of charmed meson mass in medium on the cross sections for charmonium absorption in hadronic matter.Comment: 10 pages, 2 figures. Talk given at Quark Matter 2002 (QM 2002), Nantes, France, 18-24 July 2002. To appear in the proceedings (Nucl. Phys. A

    Census politics in deeply divided societies

    Get PDF
    Population censuses in societies that are deeply divided along ethnic, religious or linguistic lines can be sensitive affairs – particularly where political settlements seek to maintain peace through the proportional sharing of power between groups. This brief sets out some key findings from a research project investigating the relationship between census politics and the design of political institutions in Bosnia and Herzegovina, Kenya, Lebanon and Northern Ireland

    Patient and public involvement facilitators: Could they be the key to the NHS quality improvement agenda?

    Get PDF
    Objective Research into patient and public involvement (PPI) has not examined in detail patient and public involvement facilitators’ (PPIFs) roles and activities. This study analysed PPIFs’ roles using qualitative data gathered from three different UK health‐care organizations. Design Thematic analysis was used to examine cross‐sectional data collected using a mixed‐methods approach from three organizations: a mental health trust, a community health social enterprise and an acute hospital trust. The data set comprised of 27 interviews and 48 observations. Findings Patient and public involvement facilitators roles included the leadership and management of PPI interventions, developing health‐care practices and influencing quality improvements (QI). They usually occupied middle‐management grades but their PPIF role involved working in isolation or in small teams. They reported facilitating the development and maintenance of relationships between patients and the public, and health‐care professionals and service managers. These roles sometimes required them to use conflict resolution skills and involved considerable emotional labour. Integrating information from PPI into service improvement processes was reported to be a challenge for these individuals. Conclusions Patient and public involvement facilitators capture and hold information that can be used in service improvement. However, they work with limited resources and support. Health‐care organizations need to offer more practical support to PPIFs in their efforts to improve care quality, particularly by making their role integral to developing QI strategies

    Embracing additive manufacture: implications for foot and ankle orthosis design

    Get PDF
    <p>Abstract</p> <p>Background</p> <p>The design of foot and ankle orthoses is currently limited by the methods used to fabricate the devices, particularly in terms of geometric freedom and potential to include innovative new features. Additive manufacturing (AM) technologies, where objects are constructed via a series of sub-millimetre layers of a substrate material, may present the opportunity to overcome these limitations and allow novel devices to be produced that are highly personalised for the individual, both in terms of fit and functionality.</p> <p>Two novel devices, a foot orthosis (FO) designed to include adjustable elements to relieve pressure at the metatarsal heads, and an ankle foot orthosis (AFO) designed to have adjustable stiffness levels in the sagittal plane, were developed and fabricated using AM. The devices were then tested on a healthy participant to determine if the intended biomechanical modes of action were achieved.</p> <p>Results</p> <p>The adjustable, pressure relieving FO was found to be able to significantly reduce pressure under the targeted metatarsal heads. The AFO was shown to have distinct effects on ankle kinematics which could be varied by adjusting the stiffness level of the device.</p> <p>Conclusions</p> <p>The results presented here demonstrate the potential design freedom made available by AM, and suggest that it may allow novel personalised orthotic devices to be produced which are beyond the current state of the art.</p

    Proposal of a Model for IT Service Continuity Management

    Get PDF
    Micro and small companies in the software area now represent more than 90% of organizations in the country and grow 6% annually on average. However, the lack of planning in these companies in business continuity management contributes to their mortality when problems occur, such as disasters and disruption of system services. The implementation of IT Service Continuity Management as a tool for planning would be the solution. This research presents the current level of maturity of these companies in a Micro scenario and Small IT Companies in Paranå, at Londrina and Cascavel region

    Parent formulation at the Lagrangian level

    Full text link
    The recently proposed first-order parent formalism at the level of equations of motion is specialized to the case of Lagrangian systems. It is shown that for diffeomorphism-invariant theories the parent formulation takes the form of an AKSZ-type sigma model. The proposed formulation can be also seen as a Lagrangian version of the BV-BRST extension of the Vasiliev unfolded approach. We also discuss its possible interpretation as a multidimensional generalization of the Hamiltonian BFV--BRST formalism. The general construction is illustrated by examples of (parametrized) mechanics, relativistic particle, Yang--Mills theory, and gravity.Comment: 26 pages, discussion of the truncation extended, typos corrected, references adde
    • 

    corecore