813 research outputs found

    Transcribing Latin Manuscripts in Respect to Linguistics

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    Current text detection software, although can transcribe modern languages with high accuracy, has flaws detecting texts and transcribing original Latin manuscripts sufficiently. This paper proposes a general approach for transcribing Latin manuscripts in respect to linguistics and develops a system to transcribe Latin manuscripts containing intricate abbreviations, which combines basic object detection algorithms with linguistics. We used methods from image processing and made changes based on the characteristics of Latin.This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]

    Recurrence and Polya number of general one-dimensional random walks

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    The recurrence properties of random walks can be characterized by P\'{o}lya number, i.e., the probability that the walker has returned to the origin at least once. In this paper, we consider recurrence properties for a general 1D random walk on a line, in which at each time step the walker can move to the left or right with probabilities ll and rr, or remain at the same position with probability oo (l+r+o=1l+r+o=1). We calculate P\'{o}lya number PP of this model and find a simple expression for PP as, P=1−ΔP=1-\Delta, where Δ\Delta is the absolute difference of ll and rr (Δ=∣l−r∣\Delta=|l-r|). We prove this rigorous expression by the method of creative telescoping, and our result suggests that the walk is recurrent if and only if the left-moving probability ll equals to the right-moving probability rr.Comment: 3 page short pape

    A unifying framework for seed sensitivity and its application to subset seeds

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    We propose a general approach to compute the seed sensitivity, that can be applied to different definitions of seeds. It treats separately three components of the seed sensitivity problem -- a set of target alignments, an associated probability distribution, and a seed model -- that are specified by distinct finite automata. The approach is then applied to a new concept of subset seeds for which we propose an efficient automaton construction. Experimental results confirm that sensitive subset seeds can be efficiently designed using our approach, and can then be used in similarity search producing better results than ordinary spaced seeds

    On the ground state energy scaling in quasi-rung-dimerized spin ladders

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    On the basis of periodic boundary conditions we study perturbatively a large N asymptotics (N is the number of rungs) for the ground state energy density and gas parameter of a spin ladder with slightly destroyed rung-dimerization. Exactly rung-dimerized spin ladder is treated as the reference model. Explicit perturbative formulas are obtained for three special classes of spin ladders.Comment: 4 page

    Parton Distributions in the Valon Model

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    The parton distribution functions determined by CTEQ at low Q2Q^2 are used as inputs to test the validity of the valon model. The valon distributions in a nucleon are first found to be nearly QQ independent. The parton distribution in a valon are shown to be consistent with being universal, independent of the valon type. The momentum fractions of the partons in the valon add up separately to one. These properties affirm the validity of the valon model. The various distributions are parameterized for convenient application of the model.Comment: 9 pages + 9 figures in ep

    Comparison of Nuclear Suppression Effects on Meson Production at High p_T and p_L

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    The medium effect on the pion distribution at high pTp_T in AAAA collisions is compared to that of the pion distribution at high pLp_L in pApA collisions. Both the suppression of the spectra and the energy losses of the measured pions are studied. Although the medium effect on pTp_T is larger than on pLp_L, the difference is found surprisingly to be not as big as one would naively expect.Comment: 8 RevTex pages with 5 figure

    Scaling Distributions of Quarks, Mesons and Proton for all pTp_T, Energy and Centrality

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    We present the evidences for the existence of a universal scaling behavior of the production of π0\pi^0 at all transverse momenta in heavy-ion collisions at all centralities and all collision energies. The corresponding scaling behavior of the quarks is then derived just before the quarks recombine with antiquarks to form the pions. The degradation effect of the dense medium on the quark pTp_T is derived from the scaling distribution. In the recombination model it is then possible to calculate the pTp_T distributions of the produced proton and kaon, which are scaling also. Experimentally verifiable predictions are made. Implications of the existence of the scaling behavior are discussed.Comment: 10 pages in RevTeX, including 14 figures in eps file

    From Gapped Excitons to Gapless Triplons in One Dimension

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    Often, exotic phases appear in the phase diagrams between conventional phases. Their elementary excitations are of particular interest. Here, we consider the example of the ionic Hubbard model in one dimension. This model is a band insulator (BI) for weak interaction and a Mott insulator (MI) for strong interaction. Inbetween, a spontaneously dimerized insulator (SDI) occurs which is governed by energetically low-lying charge and spin degrees of freedom. Applying a systematically controlled version of the continuous unitary transformations (CUTs) we are able to determine the dispersions of the elementary charge and spin excitations and of their most relevant bound states on equal footing. The key idea is to start from an externally dimerized system using the relative weak interdimer coupling as small expansion parameter which finally is set to unity to recover the original model.Comment: 18 pages, 10 figure

    Energy Contents of Some Well-Known Solutions in Teleparallel Gravity

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    In the context of teleparallel equivalent to General Relativity, we study energy and its relevant quantities for some well-known black hole solutions. For this purpose, we use the Hamiltonian approach which gives reasonable and interesting results. We find that our results of energy exactly coincide with several prescriptions in General Relativity. This supports the claim that different energy-momentum prescriptions can give identical results for a given spacetime. We also evaluate energy-momentum flux of these solutions.Comment: 16 pages, accepted for publication in Astrophys. Space Sc
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