1,735 research outputs found

    Quantum Dynamics of the Taub Universe in a Generalized Uncertainty Principle framework

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    The implications of a Generalized Uncertainty Principle on the Taub cosmological model are investigated. The model is studied in the ADM reduction of the dynamics and therefore a time variable is ruled out. Such a variable is quantized in a canonical way and the only physical degree of freedom of the system (related to the Universe anisotropy) is quantized by means of a modified Heisenberg algebra. The analysis is performed at both classical and quantum level. In particular, at quantum level, the motion of wave packets is investigated. The two main results obtained are as follows. i) The classical singularity is probabilistically suppressed. The Universe exhibits a stationary behavior and the probability amplitude is peaked in a determinate region. ii) The GUP wave packets provide the right behavior in the establishment of a quasi-isotropic configuration for the Universe.Comment: 10 pages, 4 figures; v2: section added, to appear on PR

    Do General Circulation Models Underestimate the Natural Variability in the Arctic Climate?

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    Applying the depreciated replacement cost method when assessing the market value of public property lacking comparables and income data

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    The growing interest in the enhancement, management, and sale of public building stock has increased the importance of their valuation and, as a result, the need to identify suitable methods for estimating value that take into account their peculiarities. They often boast architectural features (interfloor distance, layout, finishings, types of wiring/heating systems, etc.) that make them ‘extraordinary’ assets; in some cases, these features also endow them with monumental and/or historical importance. Thus, when valuating, it is necessary to adopt suitable methods. Where comparable examples or income-based parameters specifically concerning buildings with special features are lacking, the Depreciated Replacement Cost (DRC) method is the only system that can be used to estimate their market value. This paper aims to show how the DRC method can be applied in this specific market. The theoretical part will be coupled with a practical section where the DRC method will be used to estimate the market value of an extraordinary landmark building in Rome (Italy), the Palazzo degli Archivi di Stato (the State Archives building), in the EUR district, sold by EUR S.p.A. group (formerly known as Ente EUR) in 2015
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