186,474 research outputs found

    Exploring Efficiencies in Data Reduction, Analysis, and Distribution in the Exascale Era

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    DataDirect Networks (DDN) is world leader in massively scalable storage. Fellinger will discuss how the growth of data sets beyond the petabyte boundary presents new challenges to researchers in delivering and extracting usable information. He will also explore a Big Data processing architecture that overcomes constraints in network bandwidth and service layers in large-scale data distribution to enable researchers to request raw data through a filter or an analysis library. This technology, operating directly within the storage device, enables the reduction of service latency and process cycles to provide a more efficient feedback loop in iterative scientific experiments to increase data-intensive processing efficiency by up to 400%. About the speaker Dave Fellinger has over three decades of engineering experience, including film systems, ASIC design and development, GaAs semiconductor manufacture, RAID and storage systems, and video processing devices, and has architected high-performance storage systems for the world&rsquo;s fastest supercomputers. He attended Carnegie-Mellon University and holds patents in optics, motion control, video processing, and pattern recognition. In his role as chief scientist of DDN, Fellinger guides the company&rsquo;s product and market strategy to resolve key customer challenges at acute levels of scalability and has been instrumental in establishing DDN as a leader of the Big Data era. As testament to this leadership, DDN technology now delivers more bandwidth to the world&rsquo;s TOP500&reg; fastest computers than all other vendors combined.</p

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Withdrawn by Author

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    &lt;p&gt;Withdrawn by Author&nbsp;&lt;/p&gt

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods

    Dr. Edward P. Wimberly, ITC, July 2011

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    This video is a conversation with Dr. Edward P. Wimberly. Dr. Wimberly talks about his book, "No Shame in Wesley's Gospel: A Twenty-First Century Pastoral Gospel". Brad Ost, AUC Woodruff Library, is the interviewer

    Fire design of concrete structures - materials, structures and modelling

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    This publication is intended to provide guidelines rather than just data on the influence of fire on concrete and concrete structures. Therefore, the data published in herein are a selected number for the purpose of supporting interpretation and the flow of concepts. The guidelines presents a general brief outline of the effect of fire on both concrete material and concrete structures with emphasis being placed upon the important developments in the past few years, namely: (a) the increasing use of high performance concrete (HPC) in buildings, tunnels and bridges; (b) the growing acceptance of the use of performance based fire engineering calculations for the structural analysis and design against fire; (c) the problem of, and solutions to, explosive spalling; and (d) fires in tunnels - an issue of very high profile in recent years. This technical note is not intended to be an exhaustive review of the effect of fire on concrete and concrete structures, nor present a database of properties at high temperature. There are numerous publications on the subject - covering both materials and structures – in journals, conference proceedings, books [BAZ 96], [ANC 86], [SHI 87], [BUC 01], [KHO 06] and the work of the Rilem Committees [SCH 86], [SCH 90]. Instead, the main aims of this document are to present recent trends and developments, highlight key influencing factors, bring together holistically the disparate but related issues in one short document, highlight the deficiencies in current practice and point to the future. The basic principles of performance based codes and fire engineering are also presented on the assumption that the reader is not a specialist in this field

    Author Rights and Scholarly Publishing

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    Originally posted at http://blog.library.gsu.edu/2014/10/24/author-rights-and-scholarly-publishing/</p
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