2,480 research outputs found

    The survival of the object: does Winnicott's work constitute a paradigm shift in psychoanalysis?

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    This context statement provides a critical overview of my work on D.W. Winnicott, as seen in the submitted works, and demonstrates that my critical orientation develops the field, and thus justifies my claim for the award of PhD by published works. To provide a background to my work, I begin with an outline of the context in which my work on Winnicott emerged. This is followed by a brief presentation of the publications of D.W.Winnicott to illustrate the nature of my task in organising his work. I introduce a summary of the submitted works and show how they relate to each other. I begin the second section with a concise account of the evolution of psychoanalysis that results in a Freudian paradigm, in order to illustrate the context out of which Winnicotfs work evolved. This is followed by a résumé of the principal theories in Winnicott’s work to show that my comprehensive organisation of the themes and concepts provides a demonstration that Winnicott’s theoretical matrix extends psychoanalytic thought and proves him to be one of the most significant innovators in psychoanalysis since Freud. This section is an exemplification that my work on Winnicott, as seen in the main volume of the submitted works - The Language of Winnicott- and elaborated by the other submitted works - constitutes an original contribution to knowledge. I further my claim for a PhD by published works by showing that in addition to my organisation of Winnicott’s work I make a step towards extending Winnicott’s theory through my introduction of the notion of a "surviving object. In The Lanauaae of Winnicott I lay stress on two fundamental concepts at the heart of Winnicott’s theoretical matrix - 'the use of an object and violation of the self. In my clinical paper, Squiggles, clowns and Catherine Wheels, I discuss further these core concepts and show how they allude to the beginning of a new concept - "the surviving object”. Here I elaborate this concept with reference to my clinical work. This section offers further evidence that my original contribution to knowledge, as seen in the submitted works and underpinned by this statement, advances the field for future research in Winnicott’s theories. In the third section I explore my development as a researcher and describe my methodology in writing the submitted works. I discuss my style of learning and the value of my trainings in psychoanalytic psychotherapy and psychoanalysis, and comment on the distinction between the psychoanalytic paradigm I carry with me in my clinical practice and the research paradigm I make use of in my research. This is followed by a reflection on the limitations of my research and I conclude this context statement with an outline of the consequences of my work. Thus the submitted works, in conjunction with this statement, affirm that my work on Winnicott provides a way of thinking through the question concerning a Wìnnicottian paradigm shift in psychoanalysis

    Distributed Approximation Algorithms for Weighted Shortest Paths

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    A distributed network is modeled by a graph having nn nodes (processors) and diameter DD. We study the time complexity of approximating {\em weighted} (undirected) shortest paths on distributed networks with a O(logn)O(\log n) {\em bandwidth restriction} on edges (the standard synchronous \congest model). The question whether approximation algorithms help speed up the shortest paths (more precisely distance computation) was raised since at least 2004 by Elkin (SIGACT News 2004). The unweighted case of this problem is well-understood while its weighted counterpart is fundamental problem in the area of distributed approximation algorithms and remains widely open. We present new algorithms for computing both single-source shortest paths (\sssp) and all-pairs shortest paths (\apsp) in the weighted case. Our main result is an algorithm for \sssp. Previous results are the classic O(n)O(n)-time Bellman-Ford algorithm and an O~(n1/2+1/2k+D)\tilde O(n^{1/2+1/2k}+D)-time (8klog(k+1)1)(8k\lceil \log (k+1) \rceil -1)-approximation algorithm, for any integer k1k\geq 1, which follows from the result of Lenzen and Patt-Shamir (STOC 2013). (Note that Lenzen and Patt-Shamir in fact solve a harder problem, and we use O~()\tilde O(\cdot) to hide the O(\poly\log n) term.) We present an O~(n1/2D1/4+D)\tilde O(n^{1/2}D^{1/4}+D)-time (1+o(1))(1+o(1))-approximation algorithm for \sssp. This algorithm is {\em sublinear-time} as long as DD is sublinear, thus yielding a sublinear-time algorithm with almost optimal solution. When DD is small, our running time matches the lower bound of Ω~(n1/2+D)\tilde \Omega(n^{1/2}+D) by Das Sarma et al. (SICOMP 2012), which holds even when D=Θ(logn)D=\Theta(\log n), up to a \poly\log n factor.Comment: Full version of STOC 201

    Cybereducation: Effective Internet Teaching Techniques for the Information Age

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    Cybereducation is not a word I have run across in my readings. It is a word I have constructed myself after exploring the Internet and reading widely in the Futuristic literature. In this paper I invite you to accompany me on a cyberjourney. Before ·I begin the tour I ask your patience as I briefly review some popular works in Futurism. I believe this background is necessary to understand the enormity of the Information Revolution we are presently experiencing

    Protostellar Disk Evolution Over Million-Year Timescales with a Prescription for Magnetized Turbulence

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    Magnetorotational instability (MRI) is the most promising mechanism behind accretion in low-mass protostellar disks. Here we present the first analysis of the global structure and evolution of non-ideal MRI-driven T-Tauri disks on million-year timescales. We accomplish this in a 1+1D simulation by calculating magnetic diffusivities and utilizing turbulence activity criteria to determine thermal structure and accretion rate without resorting to a 3-D magnetohydrodynamical (MHD) simulation. Our major findings are as follows. First, even for modest surface densities of just a few times the minimum-mass solar nebula, the dead zone encompasses the giant planet-forming region, preserving any compositional gradients. Second, the surface density of the active layer is nearly constant in time at roughly 10 g/cm2, which we use to derive a simple prescription for viscous heating in MRI-active disks for those who wish to avoid detailed MHD computations. Furthermore, unlike a standard disk with constant-alpha viscosity, the disk midplane does not cool off over time, though the surface cools as the star evolves along the Hayashi track. The ice line is firmly in the terrestrial planet-forming region throughout disk evolution and can move either inward or outward with time, depending on whether pileups form near the star. Finally, steady-state mass transport is a poor description of flow through an MRI-active disk. We caution that MRI activity is sensitive to many parameters, including stellar X-ray flux, grain size, gas/small grain mass ratio and magnetic field strength, and we have not performed an exhaustive parameter study here.Comment: Accepted for publication in Astrophysical Journal. 19 pages, including 8 figure

    Permit for Intrepid Morse to Solemnize marriages in Ohio

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    Permit for Intrepid Morse to Solemnize Marriage in Ohiohttps://digital.kenyon.edu/chase_letters/1134/thumbnail.jp

    Magnetic Switching of Phase-Slip Dissipation in NbSe2 Nanobelts

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    The stability of the superconducting dissipationless and resistive states in single-crystalline NbSe2 nanobelts is characterized by transport measurements in an external magnetic field (H). Current-driven electrical measurements show voltage steps, indicating the nucleation of phase-slip structures. Well below the critical temperature, the position of the voltage steps exhibits a sharp, periodic dependence as a function of H. This phenomenon is discussed in the context of two possible mechanisms: the interference of the order parameter and the periodic rearrangement of the vortex lattice within the nanobelt.Comment: 4 figure

    {Tc(NO)(Cp)(PPh3)}+ – a novel technetium(I) core

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    Reactions between [TcI(NO)X2(PPh3)2(CH3CN)] complexes (X = Cl, Br) and KCp form the pseudotetrahedral organotechnetium compounds [TcI(NO)(Cp)(PPh3)X]. The halide ligands can readily be replaced by other halides or organometallic ligands giving access to a novel family of technetium(I) compounds with the robust {Tc(NO)(Cp)(PPh3)}+ core
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