66,987 research outputs found

    Supporting the active learning of collaborative database browsing techniques

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    We describe the implications of a study of database browsing behaviour for the development of a system to support more effective browsing. In particular we consider the importance of collaborative working, both in learning browsing skills and in co‐operating on a shared information‐retrieval task. From our study, we believe that an interface to support collaboration should promote the awareness of the activities of others, better visualization of the information data structures being browsed, and effective communication of the browsing process

    On the digital forensic analysis of the Firefox browser via recovery of SQLite artifacts from unallocated space

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    A technique and supporting tool for the recovery of browsing activity (both stored and deleted) from current and recent versions of the Firefox web-browser is presented. The generality of the technique is discussed: It is applicable to any software that uses the popular SQLite embedded database engine such as the Apple Safari web-browser and many Android apps

    PRIME: A System for Multi-lingual Patent Retrieval

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    Given the growing number of patents filed in multiple countries, users are interested in retrieving patents across languages. We propose a multi-lingual patent retrieval system, which translates a user query into the target language, searches a multilingual database for patents relevant to the query, and improves the browsing efficiency by way of machine translation and clustering. Our system also extracts new translations from patent families consisting of comparable patents, to enhance the translation dictionary

    Perceptually relevant browsing environments for large texture databases

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    This thesis describes the development of a large database of texture stimuli, the production of a similarity matrix re ecting human judgements of similarity about the database, and the development of three browsing models that exploit structure in the perceptual information for navigation. Rigorous psychophysical comparison experiments are carried out and the SOM (Self Organising Map) found to be the fastest of the three browsing models under examination. We investigate scalable methods of augmenting a similarity matrix using the SOM browsing environment to introduce previously unknown textures. Further psychophysical experiments reveal our method produces a data organisation that is as fast to navigate as that derived from the perceptual grouping experiments.Engineering and Physical Sciences Research Council (EPSRC

    The VizieR database of Astronomical Catalogues

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    VizieR is a database grouping in an homogeneous way thousands of astronomical catalogues gathered since decades by the Centre de Donnees de Strasbourg (CDS) and participating institutes. The history and current status of this large collection is briefly presented, and the way these catalogues are being standardized to fit in the VizieR system is described. The architecture of the database is then presented, with emphasis on the management of links and of accesses to very large catalogues. Several query interfaces are currently available, making use of the ASU protocol, for browsing purposes or for use by other data processing systems such as visualisation tools.Comment: 10 pages, 2 Postscript figures; to be published in A&A

    Genome Network Project: An Integrated Genomic Platform

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    With the objective of elucidating the structure of gene interactions in the human genome, the Genome Network Project has generated a vast quantity of experimental data, mainly focusing on transcriptional control and transcription-factor related protein-protein interactions (PPI). This data has been collected and organized into the Genome Network Platform ("http://genomenetwork.nig.ac.jp/":http://genomenetwork.nig.ac.jp/) at the National Institute of Genetics. Expression data was obtained through CAGE (Cap Analysis Gene Expression), qRT-PCR, tiling array, microarray and short RNA analysis, while PPI information was gathered through yeast two hybrid (Y2H), mammalian two hybrid (M2H) and _in vitro_ virus (IVV) methods. The Genome Network Platform Viewer provides an integrated user interface to the complete database, including services of gene search, whole genome browsing, PPI network viewer, and expression profile analysis. Our platform represents an extremely useful resource for researchers in the field of genomics, and provides access to high quality data through the combination of intuitive browsing and visualization capabilities

    The TriForC database : a comprehensive up-to-date resource of plant triterpene biosynthesis

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    Triterpenes constitute a large and important class of plant natural products with diverse structures and functions. Their biological roles range from membrane structural components over plant hormones to specialized plant defence compounds. Furthermore, triterpenes have great potential for a variety of commercial applications such as vaccine adjuvants, anti-cancer drugs, food supplements and agronomic agents. Their biosynthesis is carried out through complicated, branched pathways bymultiple enzyme types that include oxidosqualene cyclases, cytochrome P450s, and UDP-glycosyltransferases. Given that the number of characterized triterpene biosynthesis enzymes has been growing fast recently, the need for a database specifically focusing on triterpene enzymology became eminent. Here, we present the TriForC database (http://bioinformatics. psb. ugent. be/triforc/), encompassing a comprehensive catalogue of triterpene biosynthesis enzymes. This highly interlinked database serves as a user-friendly access point to versatile data sets of enzyme and compound features, enabling the scanning of a complete catalogue of experimentally validated triterpene enzymes, their substrates and products, as well as the pathways they constitute in various plant species. The database can be accessed by direct browsing or through convenient search tools including keyword, BLAST, plant species and substructure options. This database will facilitate gene mining and creating genetic toolboxes for triterpene synthetic biology
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