We explain how the so-called Einstein locality is to be understood in the Schrödinger picture of quantum mechanics. This notion is perfectly compatible with the Bell non-locality exhibited by entangled states. Contrary to some beliefs that quantum mechanics is incomplete, it is, in fact, its overcompleteness as exemplified by different pictures of quantum physics, that points to the same underlying reality.
Maniratnam Mandal, Deepti Ghadiyaram, Danna Gurari
et al.
Perception-based image analysis technologies can be used to help visually impaired people take better quality pictures by providing automated guidance, thereby empowering them to interact more confidently on social media. The photographs taken by visually impaired users often suffer from one or both of two kinds of quality issues: technical quality (distortions), and semantic quality, such as framing and aesthetic composition. Here we develop tools to help them minimize occurrences of common technical distortions, such as blur, poor exposure, and noise. We do not address the complementary problems of semantic quality, leaving that aspect for future work. The problem of assessing and providing actionable feedback on the technical quality of pictures captured by visually impaired users is hard enough, owing to the severe, commingled distortions that often occur. To advance progress on the problem of analyzing and measuring the technical quality of visually impaired user-generated content (VI-UGC), we built a very large and unique subjective image quality and distortion dataset. This new perceptual resource, which we call the LIVE-Meta VI-UGC Database, contains $40$K real-world distorted VI-UGC images and $40$K patches, on which we recorded $2.7$M human perceptual quality judgments and $2.7$M distortion labels. Using this psychometric resource we also created an automatic blind picture quality and distortion predictor that learns local-to-global spatial quality relationships, achieving state-of-the-art prediction performance on VI-UGC pictures, significantly outperforming existing picture quality models on this unique class of distorted picture data. We also created a prototype feedback system that helps to guide users to mitigate quality issues and take better quality pictures, by creating a multi-task learning framework.
O objetivo do presente artigo é apresentar uma breve discussão sobre dois filmes dirigidos por James Ivory, Uma Janela para o Amor (1985) e Maurice (1987), ambos adaptados da obra do autor britânico E. M. Forster. O foco da discussão é a crítica de gênero e problemas em torno da sexualidade na Inglaterra do início do século passado. Esses temas são adaptados e contextualizados em espaços típicos dos filmes heritage, um termo crítico desenvolvido no contexto acadêmico britânico para designar filmes de época que exploram o passado e a literatura daquele país. Antes da análise dos filmes, apresentamos a perspectiva crítica feminista que problematiza as questões levantadas pelas narrativas fílmicas, principalmente a partir dos textos de Mulvey (1983), Cook (1996), Pidduck (1997), Monk (2011), dentre outras. Os filmes de Ivory selecionam e elaboram imagens que criticam as relações entre poder, gênero e sexualidade, e com isso diversificam a cultura visual contemporânea a partir de uma distribuição mais democrática dos discursos e representações da experiência humana.
We show that picture groups are directly related to maximal green sequences for valued Dynkin quivers of finite type. Namely, there is a bijection between maximal green sequences and positive expressions (words in the generators without inverses) for the Coxeter element of the picture group. We actually prove the theorem for the more general set up of "vertically and horizontally ordered" sets of positive real Schur roots for any hereditary algebra (not necessarily of finite type). Furthermore, we show that every picture for such a set of positive roots is a linear combination of "atoms" and we give a precise description of atoms as special semi-invariant pictures.
The purpose of this paper is to study the local structure of the semi-invariant picture of a tame hereditary algebra near the null root. Using a construction that we call co-amalgamation, we show that this local structure is completely described by the semi-invariant pictures of a collection of self-injective Nakayama algebras. We then describe the cones of this local structure using cluster-like structures that we call support regular clusters. Finally, we show that the local structure is (piecewise linearly) invariant under cluster tilting.
Cavitation in solids can be caused by tensile dead-load traction or impulse traction. The two different types of boundary conditions lead to different static and dynamic solutions. In addition, if the material is stochastic, i.e., the model parameters are represented by probability distributions, the expected behaviour is more complicated to describe. Here, following the first instalment of this work, we examine the static and dynamic cavitation of a stochastic material under a uniform tensile impulse traction in different spherical geometries. We find that the critical load at which a cavity forms at the centre of the sphere is the same as for the homogeneous sphere composed entirely of the material found at its centre, while the post-cavitation radial motion is non-oscillatory. However, there are some important differences in the nonlinear elastic responses. Specifically, subcritical bifurcation, with snap cavitation, is obtained in a static sphere of stochastic neo-Hookean material and also in a radially inhomogeneous sphere, whereas for composite spheres, a supercritical bifurcation, with stable cavitation, is possible as well. Given the non-deterministic material parameters, the results are characterised by probability distributions.
Graph Weighted Models (GWMs) have recently been proposed as a natural generalization of weighted automata over strings and trees to arbitrary families of labeled graphs (and hypergraphs). A GWM generically associates a labeled graph with a tensor network and computes a value by successive contractions directed by its edges. In this paper, we consider the problem of learning GWMs defined over the graph family of pictures (or 2-dimensional words). As a proof of concept, we consider regression and classification tasks over the simple Bars & Stripes and Shifting Bits picture languages and provide an experimental study investigating whether these languages can be learned in the form of a GWM from positive and negative examples using gradient-based methods. Our results suggest that this is indeed possible and that investigating the use of gradient-based methods to learn picture series and functions computed by GWMs over other families of graphs could be a fruitful direction.
The Schrodinger and Heisenberg pictures are equivalent formulations of quantum mechanics. Here we use the Schrodinger picture to calculate the decoherence that occurs when an optical Schrodinger cat state is passed through a beam splitter. We find that an exponentially large amount of decoherence can occur even when there is a negligible change in the quadrature operator x(t) in the Heisenberg picture. Similar results have been observed in the decoherence produced by an optical amplifier, and we suggest that the usual quadrature operators in the Heisenberg picture do not provide a complete description of the output of optical devices.
Luca Guadagnino’s A Bigger Splash (2015), I argue, produces a sensorial registration of the presence of scattered subalterns. More importantly, an ‘aesthetics of indirection’ (con) gures the disturbing island-space between Italy and North Africa, where the intermittent appearance of subaltern subjects disturbs normative understandings of place and produces counter-intuitive understandings of relationality. The lmic construction of ‘intermittent adjacencies’ between subaltern presences and narrative protagonists produces gurations of disturbing relationalities between privilege and destitution, pleasure and pain, life and death. The logic of intermittent adjacencies left conspicuously un-integrated by the plot provide a sensorial and political provocation for thinking through the geopolitics of globalization in the context of the displacement of people.
We study the structure of extreme level sets of a standard one dimensional branching Brownian motion, namely the sets of particles whose height is within a fixed distance from the order of the global maximum. It is well known that such particles congregate at large times in clusters of order-one genealogical diameter around local maxima which form a Cox process in the limit. We add to these results by finding the asymptotic size of extreme level sets and the typical height and shape of those clusters which carry such level sets. We also find the right tail decay of the distribution of the distance between the two highest particles. These results confirm two conjectures of Brunet and Derrida, 2011. The proofs rely on studying the cluster distribution and should carry over to the branching random walk and the two-dimensional discrete Gaussian free field with no conceptual difficulty.
The theory of pictures between posets is known to encode much of the combinatorics of symmetric group representations and related topics such as Young diagrams and tableaux. Many reasons, com-binatorial (e.g. since semi-standard tableaux can be viewed as double quasi-posets) and topological (quasi-posets identify with finite topolo-gies) lead to extend the theory to quasi-posets. This is the object of the present article.
<span><span>Book review of</span> </span><em>Empatia e Alteridade – a figuração cinematográfica como jogo</em><span>, by José Bogalheiro (2014).</span>
Camera movements are considered a key element for the intersubjective relation between viewer and screen; nonetheless, their concrete effect on spectators’ experience still lacks the attention it deserves. This paper promotes an embodied approach to the study of camera movements, aiming to better understand the role of motor cognition during the film experience by analyzing the effects of camera movements on viewers’ motor cortex activation. We present an empirical high-density EEG neuroscientific study on camera movements, investigating viewers’ brain motor responses to different techniques like zooming, and the use of a dolly and steadicam.
This is triggered by the idea that each movement implies a particular form of physical relation between the audience and the movie. Indeed the experiment showed that the Steadicam determined the strongest activation in viewers’ motor cortex, providing first empirical ground to the notion of the capacity of the camera to simulate the virtual presence of the viewer inside the movie. This study shows how cognitive neuroscience can contribute to a better understanding of film style and techniques. Finally, this research demonstrates how film technique can be useful to cognitive neuroscience, by enabling the simulation of observers’ movements and, in so doing, allowing a novel approach to the study of action-perception links.