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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Preeti Vyas; Feras Al Taha; Jeffrey R. Blum; Jeremy R. Cooperstock;

    Tactile rendering of numeric information via a single actuator has been considered for such purposes as fitness progress tracking. However, multi-actuator designs, leveraging spatial mapping, may offer superior performance. Motivated to explore this approach without requiring hardware on the fingers or wrist, we designed HapToes, a novel ten-digit spatial mapping of numeric information to the toes, which overcomes inter-toe discrimination ambiguity. Compared to ActiVibe, a single-actuator wrist-based numeric rendering technique, under similar distraction conditions, HapToes demonstrates equivalent performance for single-value identification, and improved accuracy, response time, and cognitive load when conveying three values sequentially in a single message.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao https://doi.org/10.1...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    https://doi.org/10.1109/haptic...
    Conference object . 2020
    License: IEEE Copyright
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao https://doi.org/10.1...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      https://doi.org/10.1109/haptic...
      Conference object . 2020
      License: IEEE Copyright
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  • Authors: Yonas T. Weldeselassie; Ghassan Hamarneh; Daniel Weiskopf;

    In this paper, we propose an adaptive seeding strategy for visualization of diffusion tensor magnetic resonance imaging (DT-MRI) data using streamtubes. DT-MRI is a medical imaging modality that captures unique water diffusion properties and fiber orientation information of the imaged tissues. Visualizing DT-MRI data using streamtubes has the advantage that not only the anisotropic nature of the diffusion is visualized but also the underlying anatomy of biological structures is revealed. This makes streamtubes significant for the analysis of fibrous tissues in medical images. In order to avoid rendering multiple similar streamtubes, an adaptive seeding strategy is employed which takes into account similarity of tensors in a given region. The goal is to automate the process of generating seed points such that regions with dissimilar tensors are assigned more seed points compared to regions with similar tensors. The algorithm is based on tensor dissimilarity metrics that take into account both diffusion magnitudes and directions to optimize the seeding positions and density of streamtubes in order to reduce the visual clutter. Two recent advances in tensor calculus and tensor dissimilarity metrics are utilized: the Log-Euclidean and the J-divergence. Results show that adaptive seeding not only helps to cull unnecessary streamtubes that would obscure visualization but also do so without having to compute the culled streamtubes, which makes the visualization process faster.

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  • Authors: Douglas J. Cant;

    ABSTRACT The Aptian-Albian Mannville Group of the Western Canada foreland basin shows longitudinal paleoflow parallel to the basin axis, and therefore its sequence stratigraphic organization differs from that of either a passive margin or a transversely supplied foreland. A detailed isopach map of the lower transgressive systems tract shows that over most of the basin, the greater part of this unit was not deposited in accommodation generated primarily by flexural subsidence In the west, the basal Cadomin Conglomerate was shed during a period of erosion of the overthrust load and uplift of the foreland, and does not mark the initiation of overthrusting. The Cadomin was preserved in disequilibrium with respect to any sea-level-related base level. To the east, basal Mannville sediments were deposited in valleys forming a major drainage system cut into the underlying Paleozoic rocks or in a large but shallow cratonic basin overlying a thick Paleozoic salt undergoing solution. The valley fills are nested, cut into one another because of the lower rates of ormation of accommodation and also the narrow topographic depressions on the basal unconformity. None of these sediments were deposited in accommodation resulting from flexural subsidence. The upper highstand systems tract includes a number of unconformities, indicated in nonmarine to marginal-marine areas by incised valleys or abrupt, discontinuous facies shifts, and in shallow marine areas by falling to lowstand shoreface sandstones. In the area of higher subsidence rates near the overthrust belt, subaerial unconformities do not extend onto marine shelves; conformable surfaces with no evidence of subaerial exposure (Type 2 sequence boundaries) occur here. Eastward (parallel to the shoreline) in areas of lower subsidence rates, these pass into subaerial unconformities (Type 1 sequence boundaries) cutting across marine shelves, with falling and lowstand shoreface deposits at their distal edges. Traced much farther east into areas with the lowest subsidence rates, the Ty e 1 unconformities amalgamate, with the result that the gaps in the section are larger stratigraphically and represent longer time periods. The proportion of falling, lowstand, and transgressive sea-level deposits compared to highstand deposits is also greater cratonward. These stratigraphic and sedimentologic patterns are interpretable as the result of fluctuations in sea level generated by some unspecified extrabasinal mechanism, possibly eustasy, superimposed on the laterally varying foreland subsidence gradient.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Chudamani Aryal; Yllias Chali;

    The current encode-attend-decode paradigm suffers from noisy encoder problem. We implemented a seq2seq model consisting of a novel selective mechanism for query focused abstractive document summarization using neural networks to solve this problem. Selective mechanism was used for the better representation of input (passage) sequence. We conducted experiments on Debatepedia dataset and have demonstrated that our model outperforms the state-of-the-art model in all ROUGE scores.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao https://doi.org/10.1...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    https://doi.org/10.1007/978-3-...
    Part of book or chapter of book . 2020
    License: Springer TDM
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao https://doi.org/10.1...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      https://doi.org/10.1007/978-3-...
      Part of book or chapter of book . 2020
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  • Authors: Mohd. Hasan Ali; Junji Tamura; Bin Wu;

    Due to random variations of wind speed, output power of wind generator fluctuates randomly, and consequently fluctuations of power system frequency occur. These frequency fluctuations pose serious problems on the system, for example, lamp flicker and inaccuracy in the timing devices. Therefore, minimization of fluctuations of power system frequency is very important from the viewpoint of power system security. This paper proposes an SMES (superconducting magnetic energy storage) strategy for minimization of frequency fluctuations of grid-connected wind generator system. A multi-machine power system consisting of hydroelectric generators, diesel generators and a fixed speed wind generator is considered. The performance of SMES is evaluated in detail considering different load demands and energy capacities of SMES. Simulation results demonstrate that the proposed SMES is a very effective means of minimization of frequency fluctuations of power system including wind generator. Also, the proposed SMES can well smooth the transmission line power. Moreover, it is seen that the SMES with larger energy capacity is better from the viewpoint of fluctuations minimization. However, to reduce the installation cost, the SMES size should be selected such that it is a tradeoff between higher cost and better performance.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Annie, Béliveau; Marc, Lucotte; Robert, Davidson; Luis Otávio do Canto, Lopes; +1 Authors

    article i nfo In the Brazilian Amazon, forest conversion to agricultural lands (slash-and-burn cultivation) contributes to soil mercury (Hg) release and to aquatic ecosystem contamination. Recent studies have shown that soil Hg loss occurs rapidly after deforestation, suggesting that Hg mobility could be related to the massive cation input resulting from biomass burning. The objective of this research was to determine the effects of the first year of slash-and-burn agriculture on soil Hg levels at the regional scale of the Tapajos River, in the state of Para, Brazilian Amazon. A total of 429 soil samples were collected in 26 farms of five riparian communities of the Tapajos basin. In September 2004, soil samples were collected from primary forest sites planned for slash-and-burn cultivation. In August 2005, one year after the initial burning, a second campaign was held and the exact same sites were re-sampled. Our results showed that total Hg levels in soils did not change significantly during the first year following slash-and-burn, suggesting no immediate release of soil Hg at that point in time. However, an early Hg mobility was detected near the surface (0-5 cm), reflected by a significant shift in Hg distribution in soil fractions. Indeed, a transfer of Hg from fine to coarser soil particles was observed, indicating that chemical bonds between Hg and fine particles could have been altered. A correspondence analysis (CA) showed that this process could be linked to a chemical competition caused by cation enrichment. The regional dimension of the study highlighted the prevailing importance of soil types in Hg dynamics, as shown by differentiated soil responses following deforestation according to soil texture. Confirming an early Hg mobility and indicating an eventual Hg release out of the soil, our results reinforce the call for the development of more sustainable agricultural practices in the Amazon.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao The Science of The T...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    The Science of The Total Environment
    Article . 2009
    License: Elsevier TDM
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao The Science of The T...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      The Science of The Total Environment
      Article . 2009
      License: Elsevier TDM
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: P. A. Chatterton; J. D. Cross;

    ICE formed by condensing low pressure water vapour onto a surface below 80 K is amorphous in structure1,2 and there is evidence1 that the ice becomes crystalline when heated to 150 K. Microscopic observations of ice grown by ice pressure vapour deposition on a surface at temperatures up to 220 K have been reported3 and these show that the ice forms spherical crystallites and does not produce the crystal forms commonly observed at higher temperatures and pressures. The growth of such ice has been studied chiefly because of its relevance to the structure of nacreous clouds, but amorphous ice may also form on the surface of vacuum insulated cryogenic power cables and it was with this application in mind that the observations were made.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Nature Physical Scie...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Nature Physical Science
    Article . 1972
    License: Springer TDM
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Nature Physical Scie...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Nature Physical Science
      Article . 1972
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: J J Veillette;
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ https://doi.org/10.4...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ https://doi.org/10.4...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Kangxue Yin; Hui Huang; Pinxin Long; Alexei Gaissinski; +2 Authors

    AbstractDigitally capturing vegetation using off‐the‐shelf scanners is a challenging problem. Plants typically exhibit large self‐occlusions and thin structures which cannot be properly scanned. Furthermore, plants are essentially dynamic, deforming over the time, which yield additional difficulties in the scanning process. In this paper, we present a novel technique for acquiring and modelling of plants and foliage. At the core of our method is an intrusive acquisition approach, which disassembles the plant into disjoint parts that can be accurately scanned and reconstructed offline. We use the reconstructed part meshes as 3D proxies for the reconstruction of the complete plant and devise a global‐to‐local non‐rigid registration technique that preserves specific plant characteristics. Our method is tested on plants of various styles, appearances and characteristics. Results show successful reconstructions with high accuracy with respect to the acquired data.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Computer Graphics Fo...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Computer Graphics Forum
    Article . 2015
    License: Wiley Online Library User Agreement
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Computer Graphics Fo...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      Computer Graphics Forum
      Article . 2015
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  • Authors: A. H. Qureshi; L. N. Chaudhary;

    Temperature dependence of the initial susceptibility of Fe–3.25% Si has been investigated between −196° and 700°C for undeformed and deformed specimens. In the undeformed specimens the χi-vs-T behavior exhibits a minimum around room temperature and a second minimum around 450°C. The first maximum occurs between these two temperatures around 350°C, where χi is almost three times its room-temperature value. The χi rises again to extremely high values at temperatures slightly below the Curie point. With increasing deformation the first maximum is gradually flattened and disappears almost completely in specimens with 7% deformation.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Preeti Vyas; Feras Al Taha; Jeffrey R. Blum; Jeremy R. Cooperstock;

    Tactile rendering of numeric information via a single actuator has been considered for such purposes as fitness progress tracking. However, multi-actuator designs, leveraging spatial mapping, may offer superior performance. Motivated to explore this approach without requiring hardware on the fingers or wrist, we designed HapToes, a novel ten-digit spatial mapping of numeric information to the toes, which overcomes inter-toe discrimination ambiguity. Compared to ActiVibe, a single-actuator wrist-based numeric rendering technique, under similar distraction conditions, HapToes demonstrates equivalent performance for single-value identification, and improved accuracy, response time, and cognitive load when conveying three values sequentially in a single message.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao https://doi.org/10.1...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    https://doi.org/10.1109/haptic...
    Conference object . 2020
    License: IEEE Copyright
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao https://doi.org/10.1...arrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      https://doi.org/10.1109/haptic...
      Conference object . 2020
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  • Authors: Yonas T. Weldeselassie; Ghassan Hamarneh; Daniel Weiskopf;

    In this paper, we propose an adaptive seeding strategy for visualization of diffusion tensor magnetic resonance imaging (DT-MRI) data using streamtubes. DT-MRI is a medical imaging modality that captures unique water diffusion properties and fiber orientation information of the imaged tissues. Visualizing DT-MRI data using streamtubes has the advantage that not only the anisotropic nature of the diffusion is visualized but also the underlying anatomy of biological structures is revealed. This makes streamtubes significant for the analysis of fibrous tissues in medical images. In order to avoid rendering multiple similar streamtubes, an adaptive seeding strategy is employed which takes into account similarity of tensors in a given region. The goal is to automate the process of generating seed points such that regions with dissimilar tensors are assigned more seed points compared to regions with similar tensors. The algorithm is based on tensor dissimilarity metrics that take into account both diffusion magnitudes and directions to optimize the seeding positions and density of streamtubes in order to reduce the visual clutter. Two recent advances in tensor calculus and tensor dissimilarity metrics are utilized: the Log-Euclidean and the J-divergence. Results show that adaptive seeding not only helps to cull unnecessary streamtubes that would obscure visualization but also do so without having to compute the culled streamtubes, which makes the visualization process faster.

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  • Authors: Douglas J. Cant;

    ABSTRACT The Aptian-Albian Mannville Group of the Western Canada foreland basin shows longitudinal paleoflow parallel to the basin axis, and therefore its sequence stratigraphic organization differs from that of either a passive margin or a transversely supplied foreland. A detailed isopach map of the lower transgressive systems tract shows that over most of the basin, the greater part of this unit was not deposited in accommodation generated primarily by flexural subsidence In the west, the basal Cadomin Conglomerate was shed during a period of erosion of the overthrust load and uplift of the foreland, and does not mark the initiation of overthrusting. The Cadomin was preserved in disequilibrium with respect to any sea-level-related base level. To the east, basal Mannville sediments were deposited in valleys forming a major drainage system cut into the underlying Paleozoic rocks or in a large but shallow cratonic basin overlying a thick Paleozoic salt undergoing solution. The valley fills are nested, cut into one another because of the lower rates of ormation of accommodation and also the narrow topographic depressions on the basal unconformity. None of these sediments were deposited in accommodation resulting from flexural subsidence. The upper highstand systems tract includes a number of unconformities, indicated in nonmarine to marginal-marine areas by incised valleys or abrupt, discontinuous facies shifts, and in shallow marine areas by falling to lowstand shoreface sandstones. In the area of higher subsidence rates near the overthrust belt, subaerial unconformities do not extend onto marine shelves; conformable surfaces with no evidence of subaerial exposure (Type 2 sequence boundaries) occur here. Eastward (parallel to the shoreline) in areas of lower subsidence rates, these pass into subaerial unconformities (Type 1 sequence boundaries) cutting across marine shelves, with falling and lowstand shoreface deposits at their distal edges. Traced much farther east into areas with the lowest subsidence rates, the Ty e 1 unconformities amalgamate, with the result that the gaps in the section are larger stratigraphically and represent longer time periods. The proportion of falling, lowstand, and transgressive sea-level deposits compared to highstand deposits is also greater cratonward. These stratigraphic and sedimentologic patterns are interpretable as the result of fluctuations in sea level generated by some unspecified extrabasinal mechanism, possibly eustasy, superimposed on the laterally varying foreland subsidence gradient.

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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Chudamani Aryal; Yllias Chali;

    The current encode-attend-decode paradigm suffers from noisy encoder problem. We implemented a seq2seq model consisting of a novel selective mechanism for query focused abstractive document summarization using neural networks to solve this problem. Selective mechanism was used for the better representation of input (passage) sequence. We conducted experiments on Debatepedia dataset and have demonstrated that our model outperforms the state-of-the-art model in all ROUGE scores.

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    https://doi.org/10.1007/978-3-...
    Part of book or chapter of book . 2020
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      https://doi.org/10.1007/978-3-...
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  • Authors: Mohd. Hasan Ali; Junji Tamura; Bin Wu;

    Due to random variations of wind speed, output power of wind generator fluctuates randomly, and consequently fluctuations of power system frequency occur. These frequency fluctuations pose serious problems on the system, for example, lamp flicker and inaccuracy in the timing devices. Therefore, minimization of fluctuations of power system frequency is very important from the viewpoint of power system security. This paper proposes an SMES (superconducting magnetic energy storage) strategy for minimization of frequency fluctuations of grid-connected wind generator system. A multi-machine power system consisting of hydroelectric generators, diesel generators and a fixed speed wind generator is considered. The performance of SMES is evaluated in detail considering different load demands and energy capacities of SMES. Simulation results demonstrate that the proposed SMES is a very effective means of minimization of frequency fluctuations of power system including wind generator. Also, the proposed SMES can well smooth the transmission line power. Moreover, it is seen that the SMES with larger energy capacity is better from the viewpoint of fluctuations minimization. However, to reduce the installation cost, the SMES size should be selected such that it is a tradeoff between higher cost and better performance.

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    Authors: Annie, Béliveau; Marc, Lucotte; Robert, Davidson; Luis Otávio do Canto, Lopes; +1 Authors

    article i nfo In the Brazilian Amazon, forest conversion to agricultural lands (slash-and-burn cultivation) contributes to soil mercury (Hg) release and to aquatic ecosystem contamination. Recent studies have shown that soil Hg loss occurs rapidly after deforestation, suggesting that Hg mobility could be related to the massive cation input resulting from biomass burning. The objective of this research was to determine the effects of the first year of slash-and-burn agriculture on soil Hg levels at the regional scale of the Tapajos River, in the state of Para, Brazilian Amazon. A total of 429 soil samples were collected in 26 farms of five riparian communities of the Tapajos basin. In September 2004, soil samples were collected from primary forest sites planned for slash-and-burn cultivation. In August 2005, one year after the initial burning, a second campaign was held and the exact same sites were re-sampled. Our results showed that total Hg levels in soils did not change significantly during the first year following slash-and-burn, suggesting no immediate release of soil Hg at that point in time. However, an early Hg mobility was detected near the surface (0-5 cm), reflected by a significant shift in Hg distribution in soil fractions. Indeed, a transfer of Hg from fine to coarser soil particles was observed, indicating that chemical bonds between Hg and fine particles could have been altered. A correspondence analysis (CA) showed that this process could be linked to a chemical competition caused by cation enrichment. The regional dimension of the study highlighted the prevailing importance of soil types in Hg dynamics, as shown by differentiated soil responses following deforestation according to soil texture. Confirming an early Hg mobility and indicating an eventual Hg release out of the soil, our results reinforce the call for the development of more sustainable agricultural practices in the Amazon.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao The Science of The T...arrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    The Science of The Total Environment
    Article . 2009
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      The Science of The Total Environment
      Article . 2009
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    Authors: P. A. Chatterton; J. D. Cross;

    ICE formed by condensing low pressure water vapour onto a surface below 80 K is amorphous in structure1,2 and there is evidence1 that the ice becomes crystalline when heated to 150 K. Microscopic observations of ice grown by ice pressure vapour deposition on a surface at temperatures up to 220 K have been reported3 and these show that the ice forms spherical crystallites and does not produce the crystal forms commonly observed at higher temperatures and pressures. The growth of such ice has been studied chiefly because of its relevance to the structure of nacreous clouds, but amorphous ice may also form on the surface of vacuum insulated cryogenic power cables and it was with this application in mind that the observations were made.

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    Nature Physical Science
    Article . 1972
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      Nature Physical Science
      Article . 1972
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    Authors: J J Veillette;
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ https://doi.org/10.4...arrow_drop_down
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    Authors: Kangxue Yin; Hui Huang; Pinxin Long; Alexei Gaissinski; +2 Authors

    AbstractDigitally capturing vegetation using off‐the‐shelf scanners is a challenging problem. Plants typically exhibit large self‐occlusions and thin structures which cannot be properly scanned. Furthermore, plants are essentially dynamic, deforming over the time, which yield additional difficulties in the scanning process. In this paper, we present a novel technique for acquiring and modelling of plants and foliage. At the core of our method is an intrusive acquisition approach, which disassembles the plant into disjoint parts that can be accurately scanned and reconstructed offline. We use the reconstructed part meshes as 3D proxies for the reconstruction of the complete plant and devise a global‐to‐local non‐rigid registration technique that preserves specific plant characteristics. Our method is tested on plants of various styles, appearances and characteristics. Results show successful reconstructions with high accuracy with respect to the acquired data.

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    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Computer Graphics Forum
    Article . 2015
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  • Authors: A. H. Qureshi; L. N. Chaudhary;

    Temperature dependence of the initial susceptibility of Fe–3.25% Si has been investigated between −196° and 700°C for undeformed and deformed specimens. In the undeformed specimens the χi-vs-T behavior exhibits a minimum around room temperature and a second minimum around 450°C. The first maximum occurs between these two temperatures around 350°C, where χi is almost three times its room-temperature value. The χi rises again to extremely high values at temperatures slightly below the Curie point. With increasing deformation the first maximum is gradually flattened and disappears almost completely in specimens with 7% deformation.

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