6,090 research outputs found

    A Dual Digital Signal Processor VME Board For Instrumentation And Control Applications

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    A Dual Digital Signal Processing VME Board was developed for the Continuous Electron Beam Accelerator Facility (CEBAF) Beam Current Monitor (BCM) system at Jefferson Lab. It is a versatile general-purpose digital signal processing board using an open architecture, which allows for adaptation to various applications. The base design uses two independent Texas Instrument (TI) TMS320C6711, which are 900 MFLOPS floating-point digital signal processors (DSP). Applications that require a fixed point DSP can be implemented by replacing the baseline DSP with the pin-for-pin compatible TMS320C6211. The design can be manufactured with a reduced chip set without redesigning the printed circuit board. For example it can be implemented as a single-channel DSP with no analog I/O.Comment: 3 PDF page

    A review of the mallet impact test for small scale explosive formulations

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    Presented at 19th Seminar on New Trends of Energetic Materials (NTREM 2016); 20-22/04/2016, Pardubice Czech RepublicDevelopment of new explosive formulations begins with the generation of only a few milligrams of material which is investigated using a number of small scale tests such as DSC, TGA, response to flame, mallet impact (mallet friction either glancing or direct blow) to determine whether the formulation is safe to scale up to 10 g. The latter of these tests, mallet impact, can be particularly subjective as the result is directly influenced by the operator carrying out the assessment. Not only can there be a change from one operator to another but there can also be a change in the force applied during each strike potentially leading to inconsistent results. This study highlights this encountered variation and assesses the load applied by a variety of operators with varying levels of explosive experience. This paper also proposes the use of a small scale laboratory based impact test which would provide improved confidence in the assessment of impact sensitiveness of explosive formulations and assist in justifying whether a formulation can be taken to the next scale. A small scale version of the BAM impact test (EMTAP Test 43) has been devised that allows the comparison of the sensitiveness of small scale formulations relative to RDX (8.7 J, EMTAP Test 43B) whilst also ensuring a reproducible result

    Implementation of a central line bundle as a quality improvement priority.

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    Background: Central-line associated blood stream infections (CLABSI) are a major threat to patient morbidity and mortality. Kentucky Continue Care Hospital (KCCH), a long-term acute care hospital, experienced a significant increase in CLABSI in 2018; therefore, implementation of a central-line bundle to reduce CLABSI was identified as a quality improvement priority. Methods: This author used the Quality Improvement Model to plan, study, and evaluate the implementation of a central line bundle in KCCH following University of Louisville Institutional Review Board (ULIRB) approval, staff were educated on the new process and the audit tool using a self-study module over a 2-week period before implementation. Chart audits were done over a six-week period to identify changes for ongoing implementation strategies. The goal for this first PDSA cycle was 20% compliance. Results: Outcome objectives determined overall compliance with all central line bundle interventions improved by 19.7%. There was a 22.2% demonstration of positive change from pre-implementation to post-implementation. Outcome objectives were met, overall compliance improved by 19.7% more often and staff were meeting the objectives 22.2% more of the time. Barriers included lack of standardized documentation and difficulty in identifying which patients needed daily chlorhexidine bathing

    Patrick Byrne, the Blind Harper of County Louth

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    New Light on Early Tudor Composers. VI. Richard Pygot

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    Dual-purpose self-deliverable lunar surface PV electrical power system

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    A safe haven and work supported PV power systems on the lunar surface will likely be required by NASA in support of the manned outpost scheduled for the post-2000 lunar/Mars exploration and colonization initiative. Initial system modeling and computer analysis shows that the concept is workable and contains no major high risk technology issues which cannot be resolved in the circa 2000 to 2025 timeframe. A specific selection of the best suited type of electric thruster has not been done; the initial modeling was done using an ion thruster, but Rocketdyne must also evaluate arc and resisto-jets before a final design can be formulated. As a general observation, it appears that such a system can deliver itself to the Moon using many system elements that must be transported as dead payload mass in more conventional delivery modes. It further appears that a larger power system providing a much higher safe haven power level is feasible if this delivery system is implemented, perhaps even sufficient to permit resource prospecting and/or lab experimentation. The concept permits growth and can be expanded to include cargo transport such as habitat and working modules. In short, the combined payload could be manned soon after landing and checkout. NASA has expended substantial resources in the development of electric propulsion concepts and hardware that can be applied to a lunar transport system such as described herein. In short, the paper may represent a viable mission on which previous investments play an invaluable role. A more comprehensive technical paper which embodies second generation analysis and system size will be prepared for near-term presentation

    Unauthorized Legal Practice Prosecutions and Independent Paralegals in Ontario and the United States

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    The issue of unauthorized legal practice involves questions of professionalism and market protection. The legal profession, like other professions, is seen a being particularly successful at excluding others from its area of jurisdiction. Disputes over jurisdiction occur at the edge of this jurisdiction, specifically when certain condition arise. The e conditions are characterized by the indetermination/ technicality (I/T) ratio , where I represents the ideological underpinning of the profession and T represents the technical knowledge. If either the knowledge base or the ideological underpinning deteriorates, the occupation will lose control over its spheres of activity....For an occupation or a profession to feel secure, it must maintain a firm knowledge base and imbue its novices with the necessary ideology

    'The Arethusa' Air and 'Hussey's Maggot'

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    Measurement of the semileptonic branching fraction of the B_s meson

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    We report a measurement of the inclusive semileptonic branching fraction of the B_s meson using data collected with the BABAR detector in the center-of-mass energy region above the Υ(4S) resonance. We use the inclusive yield of ϕ mesons and the ϕ yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B_s mesons relative to all B mesons as a function of center-of-mass energy. The inclusive semileptonic branching fraction of the B_s meson is determined to be B(B_s→ℓνX)=9.5_(-2.0)^(+2.5)(stat)_(-1.9)^(+1.1)(syst)%, where ℓ indicates the average of e and μ
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