13,256 research outputs found

    The Scan. Prototyping a post-human scenography

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    In our digital age, the human eye has lost its privileged positon as the sole and central audience of an unfolding perspectval world as it fnds itself challenged by a plethora of post-human eyes. Emerging technologies of vision such as 3D laser scanning—regarded as less faulty, faster and more accurate than the human eye— fnd an ever more central role in producton, analytcs, control and decision making. Architecture and scenography, practces that are both frmly shaped around the centrality of vision of the human subject, are challenged to fnd novel ways to address a hybrid audience of human and non-human modes of vision. How do we perform and build facing this new audience? How do we deceive or delight these new eyes? How do we infltrate and inhabit the parallel digital data space they create? How can we uncover their shadows, their glitches and fallacies and subvert the realism of their representaton? How can we design an architecture or scenography for the post-human eye

    The effect of radiative cooling on scaling laws of X-ray groups and clusters

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    We have performed cosmological simulations in a ΛCDM cosmology with and without radiative cooling in order to study the effect of cooling on the cluster scaling laws. Our simulations consist of 4.1 million particles each of gas and dark matter within a box size of 100 h-1 Mpc, and the run with cooling is the largest of its kind to have been evolved to z = 0. Our cluster catalogs both consist of over 400 objects and are complete in mass down to ~1013 h-1 M☉. We contrast the emission-weighted temperature-mass (Tew-M) and bolometric luminosity-temperature (Lbol-Tew) relations for the simulations at z = 0. We find that radiative cooling increases the temperature of intracluster gas and decreases its total luminosity, in agreement with the results of Pearce et al. Furthermore, the temperature dependence of these effects flattens the slope of the Tew-M relation and steepens the slope of the Lbol-Tew relation. Inclusion of radiative cooling in the simulations is sufficient to reproduce the observed X-ray scaling relations without requiring excessive nongravitational energy injection

    A Bio-Logical Theory of Animal Learning

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    This article provides the foundation for a new predictive theory of animal learning that is based upon a simple logical model. The knowledge of experimental subjects at a given time is described using logical equations. These logical equations are then used to predict a subject’s response when presented with a known or a previously unknown situation. This new theory suc- cessfully anticipates phenomena that existing theories predict, as well as phenomena that they cannot. It provides a theoretical account for phenomena that are beyond the domain of existing models, such as extinction and the detection of novelty, from which “external inhibition” can be explained. Examples of the methods applied to make predictions are given using previously published results. The present theory proposes a new way to envision the minimal functions of the nervous system, and provides possible new insights into the way that brains ultimately create and use knowledge about the world

    Exact solution and surface critical behaviour of open cyclic SOS lattice models

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    We consider the LL-state cyclic solid-on-solid lattice models under a class of open boundary conditions. The integrable boundary face weights are obtained by solving the reflection equations. Functional relations for the fused transfer matrices are presented for both periodic and open boundary conditions. The eigen-spectra of the unfused transfer matrix is obtained from the functional relations using the analytic Bethe ansatz. For a special case of crossing parameter λ=π/L\lambda=\pi/L, the finite-size corrections to the eigen-spectra of the critical models are obtained, from which the corresponding conformal dimensions follow. The calculation of the surface free energy away from criticality yields two surface specific heat exponents, αs=2−L/2ℓ\alpha_s=2-L/2\ell and α1=1−L/ℓ\alpha_1=1-L/\ell, where ℓ=1,2,⋯ ,L−1\ell=1,2,\cdots,L-1 coprime to LL. These results are in agreement with the scaling relations αs=αb+ν\alpha_s=\alpha_b+\nu and α1=αb−1\alpha_1=\alpha_b-1.Comment: 13 pages, LaTeX, to appear in J. Phys.

    Quantum Hall Effect and Quantum Point Contact in Bilayer-Patched Epitaxial Graphene

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    We study an epitaxial graphene monolayer with bilayer inclusions via magnetotransport measurements and scanning gate microscopy at low temperatures. We find that bilayer inclusions can be metallic or insulating depending on the initial and gated carrier density. The metallic bilayers act as equipotential shorts for edge currents, while closely spaced insulating bilayers guide the flow of electrons in the monolayer constriction, which was locally gated using a scanning gate probe.Comment: 5 pages, 5 figure

    A longitudinal, observational study examining the relationships of patient satisfaction with services and mental well-being to their clinical course in young people with Type 1 diabetes mellitus during transition from child to adult health services

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    AIM: We hypothesized that participant well-being and satisfaction with services would be positively associated with a satisfactory clinical course during transition from child to adult health care. METHODS: Some 150 young people with Type 1 diabetes mellitus from five diabetes units in England were recruited to a longitudinal study of transition. Each young person was visited at home four times by a research assistant; each visit was 1 year apart. Satisfaction with services (Mind the Gap; MTG) and mental well-being (Warwick-Edinburgh Mental Well-being Scale; WEMWBS) were captured. Change in HbA1c , episodes of ketoacidosis, clinic and retinal screening attendance were used to assess clinical course. In total, 108 of 150 (72%) young people had sufficient data for analysis at visit 4. RESULTS: Mean age at entry was 16 years. By visit 4, 81.5% had left paediatric healthcare services. Median HbA1c increased significantly (P = 0.01) from 69 mmol/mol (8.5%) at baseline to 75 mmol/mol (9.0%) at visit 4. WEMWBS scores were comparable with those in the general population at baseline and were stable over the study period. MTG scores were also stable. By visit 4, some 32 individuals had a 'satisfactory' and 76 a 'suboptimal' clinical course. There were no significant differences in average WEMWBS and MTG scores between the clinical course groups (P = 0.96, 0.52 respectively); nor was there a significant difference in transfer status between the clinical course groups. CONCLUSIONS: The well-being of young people with diabetes and their satisfaction with transition services are not closely related to their clinical course. Investigating whether innovative psycho-educational interventions can improve the clinical course is a research priority

    Metabolic reprogramming of the immune response in the tumor microenvironment

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    A Division of Cancer Biology, NCI sponsored workshop, Metabolic Reprogramming of the Immune Response in the Tumor Microenvironment, was held October 2nd in Bethesda, MD. The purpose of the workshop was to bring together cancer cell biologists and immunologists to explore the mechanistic relationships between the metabolic pathways used by cancer cells and anti-tumor immune cells and how this information could be used to improve cancer immunotherapy. At the conclusion of the workshop a general discussion focused on defining the major challenges and opportunities concerning the impact of metabolism on anti-tumor immunity and cancer immunotherapy as well as what tools, technologies, resources or community efforts are required to accelerate research in this area. Overall, future studies need to consider how cancer cell metabolic pathways differ from activated lymphocytes in order to define a therapeutic window for cancer therapy. Further, studies aimed at reprogramming the metabolic qualities of T cells with the goal of improving immunotherapy were considered a promising avenue

    Off-Critical Logarithmic Minimal Models

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    We consider the integrable minimal models M(m,m′;t){\cal M}(m,m';t), corresponding to the φ1,3\varphi_{1,3} perturbation off-criticality, in the {\it logarithmic limit\,} m,m′→∞m, m'\to\infty, m/m′→p/p′m/m'\to p/p' where p,p′p, p' are coprime and the limit is taken through coprime values of m,m′m,m'. We view these off-critical minimal models M(m,m′;t){\cal M}(m,m';t) as the continuum scaling limit of the Forrester-Baxter Restricted Solid-On-Solid (RSOS) models on the square lattice. Applying Corner Transfer Matrices to the Forrester-Baxter RSOS models in Regime III, we argue that taking first the thermodynamic limit and second the {\it logarithmic limit\,} yields off-critical logarithmic minimal models LM(p,p′;t){\cal LM}(p,p';t) corresponding to the φ1,3\varphi_{1,3} perturbation of the critical logarithmic minimal models LM(p,p′){\cal LM}(p,p'). Specifically, in accord with the Kyoto correspondence principle, we show that the logarithmic limit of the one-dimensional configurational sums yields finitized quasi-rational characters of the Kac representations of the critical logarithmic minimal models LM(p,p′){\cal LM}(p,p'). We also calculate the logarithmic limit of certain off-critical observables Or,s{\cal O}_{r,s} related to One Point Functions and show that the associated critical exponents βr,s=(2−α) Δr,sp,p′\beta_{r,s}=(2-\alpha)\,\Delta_{r,s}^{p,p'} produce all conformal dimensions Δr,sp,p′<(p′−p)(9p−p′)4pp′\Delta_{r,s}^{p,p'}<{(p'-p)(9p-p')\over 4pp'} in the infinitely extended Kac table. The corresponding Kac labels (r,s)(r,s) satisfy (ps−p′r)2<8p(p′−p)(p s-p' r)^2< 8p(p'-p). The exponent 2−α=p′2(p′−p)2-\alpha ={p'\over 2(p'-p)} is obtained from the logarithmic limit of the free energy giving the conformal dimension Δt=1−α2−α=2p−p′p′=Δ1,3p,p′\Delta_t={1-\alpha\over 2-\alpha}={2p-p'\over p'}=\Delta_{1,3}^{p,p'} for the perturbing field tt. As befits a non-unitary theory, some observables Or,s{\cal O}_{r,s} diverge at criticality.Comment: 18 pages, 5 figures; version 3 contains amplifications and minor typographical correction
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