20,997 research outputs found

    Helicoidal surfaces with constant anisotropic mean curvature

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    We study surfaces with constant anisotropic mean curvature which are invariant under a helicoidal motion. For functionals with axially symmetric Wulff shapes, we generalize the recently developed twizzler representation of Perdomo to the anisotropic case and show how all helicoidal constant anisotropic mean curvature surfaces can be obtained by quadratures

    Rheumatology-led pregnancy clinic: enhancing the care of women with rheumatic diseases during pregnancy

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    The autoimmune rheumatic diseases have a clear predilection for women. Consequently, issues regarding family planning and pregnancy are a vital component of the management of these patients. Not only does pregnancy by itself causes physiologic/immunologic changes that impact disease activity but also women living with inflammatory arthritic conditions face the additional challenges of reduced fecundity and worsened pregnancy outcomes. Many women struggle to find adequate information to guide them on pregnancy planning, lactation and early parenting in relation to their chronic condition. This article discusses the gaps in the care provided to women living with inflammatory arthritis in standard practice and how a rheumatology nurse-led pregnancy clinic would fill such gap, consequently enhance the care provided and ensure appropriate education is provided to these individuals who represent the majority of the patients attending the rheumatology outpatient clinics. Such specialist care is expected to cover the whole journey as it is expected to provide high-quality care before, during and after pregnancy

    A Mixed-Method Case Study of a Learning Disability Program at a Private College: Student and Staff Perceptions of Services & Classroom Accommodations

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    Although the types and availability of academic support services for college students with disabilities have greatly increased, there continues to be a lack of empirical research documenting the perceptions of college students with learning disabilities concerning appropriateness and effectiveness of support service. The mixed-method case study focused on exploring one disability support program offered at a private college from three perspectives – a student, the director (creator of the Program), and part-time staff member. The scope of the case study focused on perceptions of the classroom accommodations and disability support services as well as an examination of the retention and completion rates comparing SLD Program students and non-SLD Program undergraduate student outcomes. The SLD Program interviews revealed the importance of the program concerning students’ overall growth in confidence and self-advocacy. Both participating program personnel reported the value of using the “Pulse pen” assistive technology by some students. SLD Program personnel interviewed shared the need to hire more staff for tutoring and the management of student weekly support services. In addition to more program staff training for enrolled students within the SLD Program with autism spectrum disorder and increased program salaries to attract possible new hires. Findings revealed the SLD Program had higher retention rates in comparison to the mainstream study group percentage and female enrollment surpassed male students within the SLD Program. Implications and recommendations for growth within the SLD Program and other similar programs are discussed

    MONTE CARLO SIMULATIONS OF MUON PRODUCTION

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    Muon production requirements for a muon collider are presented. Production of muons from pion decay is studied. Lithium lenses and solenoids are considered for focussing pions from a target, and for matching the pions into a decay channel. Pion decay channels of alternating quadrupoles and long solenoids are compared. Monte Carlo simulations are presented for production of π→μ\pi \rightarrow \mu by protons over a wide energy range, and criteria for choosing the best proton energy are discussed.Comment: Latex uses mu95.sty, 19 pages, 5 postscript figures. A postscript file can be seen at URL http://www.cap.bnl.gov/~cap/mumu/important.html Search for Publication

    Strongly-coupled quantum critical point in an all-in-all-out antiferromagnet

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    Dimensionality and symmetry play deterministic roles in the laws of Nature. They are important tools to characterize and understand quantum phase transitions, especially in the limit of strong correlations between spin, orbit, charge, and structural degrees of freedom. Using newly-developed, high-pressure resonant x-ray magnetic and charge diffraction techniques, we have discovered a quantum critical point in Cd2Os2O7 as the all-in-all-out (AIAO) antiferromagnetic order is continuously suppressed to zero temperature and, concomitantly, the cubic lattice structure continuously changes from space group Fd-3m to F-43m. Surrounded by three phases of different time reversal and spatial inversion symmetries, the quantum critical region anchors two phase lines of opposite curvature, with striking departures from a mean-field form at high pressure. As spin fluctuations, lattice breathing modes, and quasiparticle excitations interact in the quantum critical region, we argue that they present the necessary components for strongly-coupled quantum criticality in this three-dimensional compound
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