32,724 research outputs found

    Working with single fathers in Western Siberia: a new departure in Russian social provision

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    Social security, care and the "withdrawing state" in rural Russia

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    This chapter presents the development of a research project, exploring the ways in which social security is produced and experienced in rural Russia. Based on a case study of Burla village, the project investigates the ways in which caring practices and material support are provided by and exchanged within a range of formal and informal, state and non-state, community and kinship structures This chapter begins by exploring the theoretical and contextual frameworks for the study through a discussion of theoretical approaches to understanding “social security”, “care” and “the state”, followed by a review of existing literature on welfare, social security and rural life in contemporary Russia. It then goes on to present and discuss early findings from fieldwork conducted in March 2008 and April 2009

    EU biofuels sustainability standards and certification systems - how to seek WTO-compatibility

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    Biofuels are increasingly being produced and consumed as a partial substitute to fossil-fuel based transport fuels in the fight against climate change. Sustainability criteria have been introduced recently by some countries to help ensure biofuels perform better than fossil fuels environmentally. Concerns have been expressed from various quarters that such criteria could represent World Trade Organisation (WTO)-incompatible barriers to trade. The present paper addresses two specific issues. First, it argues that biofuels can be expected to be treated like any other traded product under WTO law. Thus an importing country could not impose different trade measures dependent on whether the biofuel complied with its sustainability criteria. Second, the Technical Barriers to Trade Agreement (TBTA) provides guidance on how to draw up criteria to help ensure WTO compatibility. This cannot guarantee compatibility, but it can help reduce significantly the chances of WTO Members bringing actions against a fellow Member’s biofuels sustainability criteria. There is little direct case law to draw upon but it is argued that, if the TBT guidance is followed, in the long term the absence of case law can be taken as an indication that the sustainability criteria established are WTO-compatible

    Caring for men in contemporary Russia: gendered constructions of need and hybrid forms of social security

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    Decoherence of Macroscopic Closed Systems within Newtonian Quantum Gravity

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    A theory recently proposed by the author aims to explain decoherence and the thermodynamical behaviour of closed systems within a conservative, unitary, framework for quantum gravity by assuming that the operators tied to the gravitational degrees of freedom are unobservable and equating physical entropy with matter-gravity entanglement entropy. Here we obtain preliminary results on the extent of decoherence this theory predicts. We treat first a static state which, if one were to ignore quantum gravitational effects, would be a quantum superposition of two spatially displaced states of a single classically well describable ball of uniform mass density in empty space. Estimating the quantum gravitational effects on this system within a simple Newtonian approximation, we obtain formulae which predict e.g. that as long as the mass of the ball is considerably larger than the Planck mass, such a would-be-coherent static superposition will actually be decohered whenever the separation of the centres of mass of the two ball-states excedes a small fraction (which decreases as the mass of the ball increases) of the ball radius. We then obtain a formula for the quantum gravitational correction to the would-be-pure density matrix of a non-relativistic many-body Schroedinger wave function and argue that this formula predicts decoherence between configurations which differ (at least) in the "relocation" of a cluster of particles of Planck mass. We estimate the entropy of some simple model closed systems, finding a tendency for it to increase with "matter-clumping" suggestive of a link with existing phenomenological discussions of cosmological entropy increase.Comment: 11 pages, plain TeX, no figures. Accepted for publication as a "Letter to the Editor" in "Classical and Quantum Gravity

    Brick Walls and AdS/CFT

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    We discuss the relationship between the bulk-boundary correspondence in Rehren's algebraic holography (and in other 'fixed-background' approaches to holography) and in mainstream 'Maldacena AdS/CFT'. Especially, we contrast the understanding of black-hole entropy from the viewpoint of QFT in curved spacetime -- in the framework of 't Hooft's 'brick wall' model -- with the understanding based on Maldacena AdS/CFT. We show that the brick-wall modification of a Klein Gordon field in the Hartle-Hawking-Israel state on 1+2-Schwarzschild AdS (BTZ) has a well-defined boundary limit with the same temperature and entropy as the brick-wall-modified bulk theory. One of our main purposes is to point out a close connection, for general AdS/CFT situations, between the puzzle raised by Arnsdorf and Smolin regarding the relationship between Rehren's algebraic holography and mainstream AdS/CFT and the puzzle embodied in the 'correspondence principle' proposed by Mukohyama and Israel in their work on the brick-wall approach to black hole entropy. Working on the assumption that similar results will hold for bulk QFT other than the Klein Gordon field and for Schwarzschild AdS in other dimensions, and recalling the first author's proposed resolution to the Mukohyama-Israel puzzle based on his 'matter-gravity entanglement hypothesis', we argue that, in Maldacena AdS/CFT, the algebra of the boundary CFT is isomorphic only to a proper subalgebra of the bulk algebra, albeit (at non-zero temperature) the (GNS) Hilbert spaces of bulk and boundary theories are still the 'same' -- the total bulk state being pure, while the boundary state is mixed (thermal). We also argue from the finiteness of its boundary (and hence, on our assumptions, also bulk) entropy at finite temperature, that the Rehren dual of the Maldacena boundary CFT cannot itself be a QFT and must, instead, presumably be something like a string theory.Comment: 54 pages, 3 figures. Arguments strengthened in the light of B.S. Kay `Instability of Enclosed Horizons' arXiv:1310.739

    Theoretical dynamic analysis of the landing loads on a vehicle with a tricycle landing gear

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    Theoretical dynamic analysis of landing loads on vehicle with tricycle landing gear compared with X-15 aircraft dat
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