606 research outputs found

    Teaching Clinical Sociology: The Introductory Course

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    This paper discusses the aims and format of an introductory course in clinical sociology. It reviews the process of teaching clinical sociology as a profession and teaching the theoretical basis that distinguishes the field. Case studies, guest practitioners, and practical exercises are used to prompt an application and integration of the acquired knowledge. Ideally, the course reviewed here can serve as a model for others devising courses in this emerging field or for those attempting to bring some uniformity to the clinical sociology curriculum

    Identification of Violence in Psychiatric Case Presentations

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    Previous research on medical discourse suggests that physicians minimize patients\u27 social problems through conversational and linguistic interactions. There has been little assessment, however, of the neglect of violence by psychiatric staff. In an attempt to address this important area, the case presentations of 77 recently violent psychiatric patients were examined. A contextual analysis of the violence mentioned during the case presentations revealed four categories of identification violence as part of the primary problem, as a psychiatric disorder, as an unrelated incident, or not mentioned at all In nearly two-thirds of the case presentations, the violence was not identified as part of the primary problem The findings and case examples substantiate the assertion that social problems are neglected, minimized, or medicalized in medical discourse They also suggest that clinical protocol should be established to ensure more extensive consideration of the dangerousness implied by reported violenc

    Energy preserving evolutions over Bosonic systems

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    The exponential convergence to invariant subspaces of quantum Markov semigroups plays a crucial role in quantum information theory. One such example is in bosonic error correction schemes, where dissipation is used to drive states back to the code-space - an invariant subspace protected against certain types of errors. In this paper, we investigate perturbations of quantum dynamical semigroups that operate on continuous variable (CV) systems and admit an invariant subspace. First, we prove a generation theorem for quantum Markov semigroups on CV systems under the physical assumptions that (i) the generator has GKSL form with corresponding jump operators defined as polynomials of annihilation and creation operators; and (ii) the (possibly unbounded) generator increases all moments in a controlled manner. Additionally, we show that the level sets of operators with bounded first moments are admissible subspaces of the evolution, providing the foundations for a perturbative analysis. Our results also extend to time-dependent semigroups. We apply our general framework to two settings of interest in continuous variables quantum information processing. First, we provide a new scheme for deriving continuity bounds on the energy-constrained capacities of Markovian perturbations of Quantum dynamical semigroups. Second, we provide quantitative perturbation bounds for the steady state of the quantum Ornstein Uhlenbeck semigroup and the invariant subspace of the photon dissipation used in bosonic error correction

    Revisiting the metal-to-metal transition in 2H2H-AgNiO2_2

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    The layered delafossite compound AgNiO2_2 with 2H2H stacking symmetry undergoes a structural metal-to-metal transition at TS365T_{\rm S}\sim 365 K. It has been described in the past as a charge-ordering transition, where local S=1S=1 spins are formed on part of the Ni sites. By means of first-principles many body calculations, we show that the transition is in fact a site-selective Mott transition on the Ni sublattice with only minor charge differentiation. Key to this finding is the uncovering of ligand-hole physics, rendering a Ni2+^{2+} instead of a formal Ni3+^{3+} oxidation state, in conjunction with strong local Coulomb repulsions.Comment: 4 pages, 4 figure

    Gluten intake in 6- to 36-month-old Danish infants and children

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    Coeliac disease (CD) affects about 1 % of the general population. Information concerning gluten intake in the general population is scarce. In particular, variation in gluten intake during the complementary feeding period may be an independent risk factor in CD pathogenesis. We determined the intake of gluten from wheat, barley, rye and oats in a cross-sectional National Danish Survey of Dietary Habits among Infants and Young Children (2006–2007). The study population comprised a random sample of 1743 children aged 6–36 months, recruited from the National Danish Civil Registry. The protein contents from wheat, rye, barley and oats were found in the National Danish Food Composition Table, and multiplied with the amounts in the recipes. The amounts of gluten were calculated as the amount of cereal protein × 0·80 for wheat and oats, ×0·65 for rye and ×0·50 for barley. Dietary intake was recorded daily for seven consecutive days in pre-coded food records supplemented with open-answer possibilities. Gluten intake increased with age (P < 0·0001). Oats were introduced first, rapidly outpaced by wheat, the intake of which continued to increase with age, whereas oats started to decrease at 12 months. Boys had a higher intake of energy (P ≤ 0·0001) and all types of gluten, except for barley (P ≤ 0·87). In 8–10-month-old (P < 0·0001) and 10–12-month-old (P = 0·007), but not in 6–8-month-old infants (P = 0·331), non-breast-fed infants had higher total gluten intake than partially breast-fed infants. In conclusion, this study presents representative population-based data on gluten intake in Danish infants and young children

    Continuity of quantum entropic quantities via almost convexity

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    Based on the proofs of the continuity of the conditional entropy by Alicki, Fannes, and Winter, we introduce in this work the almost locally affine (ALAFF) method. This method allows us to prove a great variety of continuity bounds for the derived entropic quantities. First, we apply the ALAFF method to the Umegaki relative entropy. This way, we recover known almost tight bounds, but also some new continuity bounds for the relative entropy. Subsequently, we apply our method to the Belavkin-Staszewski relative entropy (BS-entropy). This yields novel explicit bounds in particular for the BS-conditional entropy, the BS-mutual and BS-conditional mutual information. On the way, we prove almost concavity for the Umegaki relative entropy and the BS-entropy, which might be of independent interest. We conclude by showing some applications of these continuity bounds in various contexts within quantum information theory.Comment: 68 pages, 6 figure

    Electronic correlations and superconducting instability in La3_3Ni2_2O7_7 under high pressure

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    Motivated by the report of superconductivity in bilayer La3_3Ni2_2O7_7 at high pressure, we examine the interacting electrons in this system. First-principles many-body theory is utilized to study the normal-state electronic properties. Below 100\,K, a multi-orbital non-Fermi liquid state resulting from loss of Ni-ligand coherence within a flat-band dominated low-energy landscape is uncovered. The incoherent low-temperature Fermi surface displays strong mixing between Ni-dz2d_{z^2} and Ni-dx2y2d_{x^2-y^2} orbital character. In a model-Hamiltonian picture, spin fluctuations originating mostly from the Ni-dz2d_{z^2} orbital give rise to strong tendencies towards a superconducting instability with dx2y2d_{x^2-y^2} order parameter. The dramatic enhancement of TcT_{\rm c} in pressurized La3_3Ni2_2O7_7 is due to stronger Ni-dz2d_{z^2} correlations compared to those in the infinite-layer nickelates.Comment: 5 pages, 4 figure
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