2,392 research outputs found

    Osteoporosis: Prevention, Screening, and Treatment in the Primary Care Setting

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    Osteoporosis, with its related fragility fractures, is largely a preventable disorder, not an inevitable part of aging. Through effective education, screening, and treatement in the primary care setting, it may be possible to curb the impending rise of osteoporosis and costly fractures as the population ages. A time-conserving patient education pamphlet on osteoporosis was developed for a family medicine practice in central Vermont. The educational intervention is sensitive to the time constraints of a busy practice and may provide a much needed foundation for osteoporosis education in the primary care setting.https://scholarworks.uvm.edu/fmclerk/1070/thumbnail.jp

    A triplane fracture of the distal femoral epiphysis: A case report

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    Cross-Continental Research Collaborations about Online Teaching

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    Increasingly, faculty academics are required to teach and design online courses. However, in many cases, faculty members report having low levels of confidence, self-efficacy and competence to teach in online environments. Although their professional learning is often enhanced by institutional support strategies such as workshops, online instruction and mentoring systems, many faculty academics learn through “just-in-time” rather than “just-in-case” strategies. This paper reports on the findings from a cross-continental research project between researchers in two higher education institutions in the United States and Australia. The project was initiated to: 1) determine the learning needs of faculty members who teach online and design online courses; and 2) to develop tailored professional learning programs and resources to enable faculty members to become effective online teachers and skilled online course designers. As well as providing an account of the research findings to date, the paper provides recommendations for other researchers who may be considering cross-institutional or cross-continental research about online teaching, online course design and professional learning programs

    Self-Efficacy

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    The study of self-efficacy is concerned with understanding this important aspect of self and identity—people\u27s beliefs about their personal capabilities and how these beliefs influence what they try to accomplish, how they try to accomplish it, and how they react to successes and setbacks along the way

    Fourfold oscillations and anomalous magnetic irreversibility of magnetoresistance in the non-metallic regime of Pr1.85Ce0.15CuO4

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    Using magnetoresistance measurements as a function of applied magnetic field and its direction of application, we present sharp angular-dependent magnetoresistance oscillations for the electron-doped cuprates in their low-temperature non-metallic regime. The presence of irreversibility in the magnetoresistance measurements and the related strong anisotropy of the field dependence for different in-plane magnetic field orientations indicate that magnetic domains play an important role for the determination of electronic properties. These domains are likely related to the stripe phase reported previously in hole-doped cuprates.Comment: 11 pages, 5 figure

    Analytical Model for the Magnetic Field Distribution in a Flux Modulation Superconducting Machine

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    International audienceThis paper presents a theoretical analysis of an axial field machine using High Temperature Superconductors (HTS) wires and bulks. The air-gap magnetic field obtained with the HTS coil and modulated by the HTS bulks is predicted by two 2D axisymmetric models. Analytical models are based on the solution of Laplace's equation by the separation of variable method. The torque is obtained by a quick numerical integration of the Laplace force that acts on the armature winding. The proposed model is compared with 3D finite element simulations and good agreement is obtained. This model can be used with an optimization design procedure with a large reduction of the computational time

    Construction and Test of a Flux Modulation Superconducting Machine for Aircraft

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    International audienceThe increasing of drives towards More Electric Aircraft (MEA) or the development of electric propulsion aircraft calls for MW-class electrical machines with more compact and power dense designs. One way is to explore the use of superconducting materials to create a high magnetic field in order to reduce the mass of ferromagnetic components. This paper presents the construction and the test of a brushless axial flux superconducting machine. The brushless topology satisfies the aeronautics industry requirements in terms of maintenance, while the axial configuration ensures an optimal use of the anisotropic HTS tapes. The machine is classed as partially superconducting, only the inductor is made with superconducting materials. A special design concerning the use of a stationary cryostat is presented. This improvement reduces significantly the electromagnetic air-gap length. A 50kW prototype is manufactured with a minimal mass objective. The prototype constitutes a first step to a scale-up MW-class machine design

    Addressing the Fertility Needs of HIV-Seropositive Males

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    An increasing number of serodiscordant couples are utilizing advanced reproductive technologies to address their reproductive needs. Recent literature has demonstrated that it is not only technically possible but also safe to utilize sperm-washing techniques to allow for the creation of embryos, thereby preventing both horizontal and vertical transmission of HIV. This article addresses the strengths and weakness of various reproductive techniques and discusses our experience at Columbia University (NY, USA), the location of the largest HIV-focused fertility program in the USA

    Bumpy Moments and Joyful Breakthroughs: The Place of Threshold Concepts in Academic Staff Development Programs About Online Learning and Teaching

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    In this article the authors address the situation in higher education of academic staff facing what they conceptualise as “bumpy moments and joyful breakthroughs” as they work through the process of becoming teachers in online learning environments. The article comes from a research project, which gathered and analysed data from systematic observations and questionnaires. The authors base their study on the known fact that while many academics have grounded experience in on-campus teaching and learning situations they do not necessarily have the skills required today for extending learning through on-line environments. The authors discover that when academics start teaching in online environments, or at least start facing the fact that there are requirements to do so, and they begin to explore this environment both personally and theoretically, “they encounter threshold concepts that can unsettle their most deeply held personal and pedagogical beliefs about what it means to teach and learn, and what it means to be an effective teacher and learner”. This paper gives an account of the research into these new conditions for educators and offers a set of recommendations “to inform the design of a multi-strategy academic staff learning program, which facilitated the development of online teaching skills”. [From Introduction to issue of ACCESS]

    System level design of a full-duplex wireless transceiver for brain-machine interfaces

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    We propose a new wireless communication architecture for implanted systems that simultaneously stimulates neurons and record neural responses. This architecture can support large numbers of electrodes (>500), providing 100 Mb/s for the downlink of stimulation signals, and gigabits per second for the uplink of neural recordings. We propose a full-duplex transceiver architecture that shares one antenna for both the ultrawideband (UWB) and the 2.45-GHz industrial, scientific, and medical band. A new pulse shaper is used for the gigabits per second uplink to simplify the transceiver design, while supporting several modulation formats with high data rates. To validate our system-level design for brain-machine interfaces, we present an ex-vivo experimental demonstration of the architecture. While the system design is for an integrated solution, the proof-of-concept demonstration uses discrete components. Good bit error rate performance over a biological channel at 0.5-, 1-, and 2-Gb/s data rates for uplink telemetry (UWB) and 100 Mb/s for downlink telemetry (2.45-GHz band) are achieved
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