323 research outputs found

    A new approach to collaborative frameworks using shared objects

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    Multi-user graphical applications currently require the creation of a set of interface objects to maintain each participating display. The concept of shared objects allows a single object instance to be used in multiple contexts concurrently. This provides a novel way of reducing collaborative overheads by requiring the maintenance of only a single set of interface objects. The paper presents the concept of a shared-object collaborative framework and illustrates how the concept can be incorporated into an existing object-oriented toolkit

    Creating a 3D printer and testing mechanical properties of printed models

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    3D printing is experiencing rapid development in recent years. Due to the favorable price and fast and precise manufacturing, 3D printing is increasingly replacing the production models of the conventional methods. This thesis presents the history of 3D printing and some common technologies used in 3D printing. There are presented characteristics, weaknesses, as well as a general method of operation. In this thesis I present building and use of 3D printer.\ud I made pressure, tension and bending test on standard specimens printed with a 3D printer. For the end I have seen specimens under microscope

    MARS Bulletin Vol.22 No 1 (2014)

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    Crop Monitoring in EuropeJRC.H.4-Monitoring Agricultural Resource

    MARS Bulletin Vol. 23 No 1 (2015) - Weakly hardened winter cereals in Europe

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    Crop monitoring in EuropeJRC.H.4-Monitoring Agricultural Resource

    Long-term summer sunshine/moisture stress reconstruction from tree-ring widths from Bosnia and Herzegovina

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    We present the first summer sunshine reconstruction from tree-ring data for the western part of the Balkan Peninsula. Summer sunshine is tightly connected with moisture stress in trees, because the moisture stress and therefore the width of annual tree-rings is under the influence of the direct and interactive effects of sunshine duration (temperature, precipitation, cloud cover and evapotranspiration). The reconstruction is based on a calibrated z-scored mean chronology, calculated from tree-ring width measurements from 7 representative black pine (<i>Pinus nigra</i> Arnold) sites in Bosnia and Herzegovina (BiH). A combined regression and scaling approach was used for the reconstruction of the summer sunshine. We found a significant negative correlation (<i>r</i> = &minus;0.54, <i>p</i> < 0.0001) with mean June–July sunshine hours from Osijek meteorological station (Croatia). The developed model was used for reconstruction of summer sunshine for the time period 1660–2010. We identified extreme summer events and compared them to available documentary historical sources of drought, volcanic eruptions and other reconstructions from the broader region. All extreme summers with low sunshine hours (1712, 1810, 1815, 1843, 1899 and 1966) are connected with volcanic eruptions

    MARS Bulletin Vol.22 No 2 (2014) - Exceptional mild winter and very wet in western Europe

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    Crop Monitoring in EuropeJRC.H.4-Monitoring Agricultural Resource

    Sequence stratigraphy and reservoir characterisation of Permian fluvial-lacustrine successions, Baryulah area, southwest Queensland, Australia

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    Ch. 1. Introduction -- Ch. 2. Sequence stratigraphy -- Ch. 3. Fluvial-lacustrine depositional systems -- Ch. 4. Chronostratigraphy -- Ch. 5.Depositional analogues -- Ch. 6. Estimating channel belt width -- Ch. 7. Facies mapping -- Ch. 8. Conclusions -- Ch. 9. Implications for petroleum development. "It has been demonstrated that the use of sequence stratigraphic concepts to build chronostratigraphic frameworks (comprised of genetically related intervals) can assist facies mapping, and thus delineation of channel belts with optimum reservoir facies and connectivity." "The use of empirical data and modern and ancient depositional analogues is the key to understanding the spatial variability of depositional facies within fluvial-lacustrine settings." --p. 32.Thesis (M.Sc.) -- University of Adelaide, National Centre for Petroleum Geology and Geophysics, 200
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