13,829 research outputs found

    Teachers as mediators: an exploration of situated English teaching

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    Within the context of lower secondary English teaching in South West England, this study identifies in broad terms the competing goals between which English teachers mediate and the explicit and hidden tensions that result. To understand the interactions of competing goals, teachers’ goal-oriented behaviours are referenced to a set of idealised ‘role types’ based on the dimensions of goals, norms, discourses and practices. It is asserted that competing goals, significant to particular educational circumstances, emanate from various sometimes contradictory local, national and perhaps broader social and cultural influences on practice. Yet the teachers observed moved smoothly between goal-oriented behaviours in a continuous and comfortable style, easily and without reflecting any tensions between them. Thus, this article elaborates an account of situated English teaching

    Far O\u27er The Deep Blue Sea

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    [Verse 1]The moon is beaming brightly love, Upon the deep blue seaA trusty crew is waiting near,For thee, dear girl, for thee!Then leave thy downy couch, my love, And with thy sailor flee;His gallant bark shall bear thee safe,Far o\u27er the deep blue sea,Far o\u27er the deep, the deep blue sea. [Verse 2]The storm-bird sleeps upon the rockNo angry surges roarNo sound disturbs the slumb\u27ring deepNot e\u27en the dipping oar:No watchful eye is on thee now,Then,dearest, hie with me,And share a daring sailor\u27s love,Far o\u27er the deep blue sea. [Verse 3]She comes! she comes! with trembling stepOh! happy shall we beWhen safely moor\u27d, on other shores,From ev\u27ry danger free!Now, speed thee on my trusty bark,Our hopes are all on theeBear, bear, us to our peaceful homeFar o\u27er the deep blue sea

    Viscous Hydrodynamics and Relativistic Heavy Ion Collisions

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    The matter created in relativistic heavy ion collisions is fairly well described by ideal hydrodynamics, and somewhat better described by viscous hydrodynamics. To this point, most viscous calculations have been two-dimensional, based on an assumption of Bjorken boost invariance along the beam axis. Here, first results are presented for a fully three-dimensional viscous model. The model is described and tests of the numerical accuracy of the code are presented. Two- and three-dimensional runs are compared, and modest changes are observed for mid-rapidity observables at the highest RHIC (Relativistic Heavy Ion Collider) energies.Comment: 23 pages, 7 figure

    Canonical and Microcanonical Distributions for Fermi Systems

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    Recursion relations are presented that allow exact calculation of canonical and microcanonical partition functions of degenerate Fermi systems, assuming no explicit two-body interactions. Calculations of the level density, sorted by angular momentum, are presented for Ni-56 are presented. The issue of treating unbound states is also addressed.Comment: 5 pages, 5 figure

    Effect of Antiferromagnetic Interlayer Coupling on Current-Assisted Magnetization Switching

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    We compare magnetization switching in Co/Cu/Co nanopillars with uncoupled and dipole-field coupled Co layers. In uncoupled nanopillars, current-driven switching is hysteretic at low magnetic field H and changes to reversible, characterized by telegraph noise, at high H. We show that dipolar coupling both affects the switching current and causes the switching to become reversible at small H. The coupling thus changes the switching to reversible, hysteretic, and then reversible again as H increases. We describe our results in terms of current-assisted thermal activation.Comment: 3 pages, 3 figure

    New multi-channel electron energy analyzer with cylindrically symmetrical electrostatic field

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    This paper discusses an electron energy analyzer with a cylindrically symmetrical electrostatic field, designed for rapid Auger analysis. The device was designed and built. The best parameters of the analyzer were estimated and then experimentally verified.Comment: 5 pages, 4 figure

    An XMM-Newton observation of the nova-like variable UX UMa: spatially and spectrally resolved two-component X-ray emission

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    In the optical and ultraviolet regions of the electromagnetic spectrum, UX Ursae Majoris is a deeply eclipsing cataclysmic variable. However, no soft X-ray eclipse was detected in ROSAT observations. We have obtained a 38 ksec XMM-Newton observation to further constrain the origin of the X-rays. The combination of spectral and timing information allows us to identify two components in the X-ray emission of the system. The soft component, dominant below photon energies of 2 keV, can be fitted with a multi-temperature plasma model and is uneclipsed. The hard component, dominant above 3 keV, can be fitted with a kT ~ 5 keV plasma model and appears to be deeply eclipsed. We suggest that the most likely source of the hard X-ray emission in UX UMa, and other systems in high mass transfer states, is the boundary layer.Comment: To appear in MNRAS Letter
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