WorldWideScience

Sample records for alfalfa western metadata

  1. Alfalfa

    Science.gov (United States)

    Alfalfa is an herb. People use the leaves, sprouts, and seeds to make medicine. Alfalfa is used for kidney conditions, bladder and prostate ... bleeding disorder called thrombocytopenic purpura. People also take alfalfa as a source of vitamins A, C, E, ...

  2. Metadata

    CERN Document Server

    Zeng, Marcia Lei

    2016-01-01

    Metadata remains the solution for describing the explosively growing, complex world of digital information, and continues to be of paramount importance for information professionals. Providing a solid grounding in the variety and interrelationships among different metadata types, Zeng and Qin's thorough revision of their benchmark text offers a comprehensive look at the metadata schemas that exist in the world of library and information science and beyond, as well as the contexts in which they operate. Cementing its value as both an LIS text and a handy reference for professionals already in the field, this book: * Lays out the fundamentals of metadata, including principles of metadata, structures of metadata vocabularies, and metadata descriptions * Surveys metadata standards and their applications in distinct domains and for various communities of metadata practice * Examines metadata building blocks, from modelling to defining properties, and from designing application profiles to implementing value vocabu...

  3. Structural Change of the Western United States Alfalfa Hay Market and its Effects of the Western United States Dairy Industry

    OpenAIRE

    Cann, Joseph Patrick

    2014-01-01

    Alfalfa is the fourth largest commodity grown in the Western U.S., representing 20% of the crop acreage over the past twenty years. In the last five years alfalfa hay price has doubled from what it was previously, indicating a possible structural change in the market. This research project was completed to test for this structural change using econometric analysis of the important demand components of alfalfa price. In addition to this, simulations of an average Utah dairy were completed to e...

  4. Metadata

    CERN Document Server

    Pomerantz, Jeffrey

    2015-01-01

    When "metadata" became breaking news, appearing in stories about surveillance by the National Security Agency, many members of the public encountered this once-obscure term from information science for the first time. Should people be reassured that the NSA was "only" collecting metadata about phone calls -- information about the caller, the recipient, the time, the duration, the location -- and not recordings of the conversations themselves? Or does phone call metadata reveal more than it seems? In this book, Jeffrey Pomerantz offers an accessible and concise introduction to metadata. In the era of ubiquitous computing, metadata has become infrastructural, like the electrical grid or the highway system. We interact with it or generate it every day. It is not, Pomerantz tell us, just "data about data." It is a means by which the complexity of an object is represented in a simpler form. For example, the title, the author, and the cover art are metadata about a book. When metadata does its job well, it fades i...

  5. Multiple Metadata / Best Metadata Return

    OpenAIRE

    Suleman, Hussein; Nelson, Michael

    2001-01-01

    The OAI protocol currently supports a simple mapping of metadata names to metadata formats, whereby a metadata record can be requested for exactly one record in exactly one format in a single GetRecord request. In the case of ListRecords, all records within a set and/or date range may be requested but there is still the restriction of a single metadata format. This is usually sufficient for simple harvesting with the intention of transferring a stream of metadata records from the source archi...

  6. Pollen and seed mediated gene flow in commercial alfalfa seed production fields

    Science.gov (United States)

    The potential for gene flow has been widely recognized since alfalfa is pollinated by bees. The Western US is a major exporter of alfalfa seed and hay and the organic dairy industry is one of the fastest growing agricultural sectors. Because of this, many alfalfa producers are impacted by market sen...

  7. Metadata in CHAOS

    DEFF Research Database (Denmark)

    Lykke, Marianne; Skov, Mette; Lund, Haakon

    . To optimally sup-port the researchers a user-centred approach was taken to develop the platform and related metadata scheme. Based on the requirements a three level metadata scheme was developed: (1) core archival metadata, (2) LARM metadata, and (3) project-specific metadata. The paper analyses how...... researchers apply the metadata scheme in their research work. The study consists of two studies, a) a qualitative study of subjects and vo-cabulary of the applied metadata and annotations, and 5 semi-structured interviews about goals for tagging. The findings clearly show that the primary role of LARM...

  8. Variation in alfalfa leafcutting bee, Megachile rotundata, reproductive success according to location of nests in U.S. commercial domiciles

    Science.gov (United States)

    The alfalfa leafcutting bee, Megachile rotundata F., is used extensively to pollinate alfalfa for seed production in western North America. However, it usually is not possible to sustain bee populations in the United States. Variable microenvironments are experienced by developing alfalfa leafcutt...

  9. Active Marine Station Metadata

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Active Marine Station Metadata is a daily metadata report for active marine bouy and C-MAN (Coastal Marine Automated Network) platforms from the National Data...

  10. Predicting structured metadata from unstructured metadata

    Science.gov (United States)

    Posch, Lisa; Panahiazar, Maryam; Dumontier, Michel; Gevaert, Olivier

    2016-01-01

    Enormous amounts of biomedical data have been and are being produced by investigators all over the world. However, one crucial and limiting factor in data reuse is accurate, structured and complete description of the data or data about the data—defined as metadata. We propose a framework to predict structured metadata terms from unstructured metadata for improving quality and quantity of metadata, using the Gene Expression Omnibus (GEO) microarray database. Our framework consists of classifiers trained using term frequency-inverse document frequency (TF-IDF) features and a second approach based on topics modeled using a Latent Dirichlet Allocation model (LDA) to reduce the dimensionality of the unstructured data. Our results on the GEO database show that structured metadata terms can be the most accurately predicted using the TF-IDF approach followed by LDA both outperforming the majority vote baseline. While some accuracy is lost by the dimensionality reduction of LDA, the difference is small for elements with few possible values, and there is a large improvement over the majority classifier baseline. Overall this is a promising approach for metadata prediction that is likely to be applicable to other datasets and has implications for researchers interested in biomedical metadata curation and metadata prediction. Database URL: http://www.yeastgenome.org/

  11. USGIN ISO metadata profile

    Science.gov (United States)

    Richard, S. M.

    2011-12-01

    The USGIN project has drafted and is using a specification for use of ISO 19115/19/39 metadata, recommendations for simple metadata content, and a proposal for a URI scheme to identify resources using resolvable http URI's(see http://lab.usgin.org/usgin-profiles). The principal target use case is a catalog in which resources can be registered and described by data providers for discovery by users. We are currently using the ESRI Geoportal (Open Source), with configuration files for the USGIN profile. The metadata offered by the catalog must provide sufficient content to guide search engines to locate requested resources, to describe the resource content, provenance, and quality so users can determine if the resource will serve for intended usage, and finally to enable human users and sofware clients to obtain or access the resource. In order to achieve an operational federated catalog system, provisions in the ISO specification must be restricted and usage clarified to reduce the heterogeneity of 'standard' metadata and service implementations such that a single client can search against different catalogs, and the metadata returned by catalogs can be parsed reliably to locate required information. Usage of the complex ISO 19139 XML schema allows for a great deal of structured metadata content, but the heterogenity in approaches to content encoding has hampered development of sophisticated client software that can take advantage of the rich metadata; the lack of such clients in turn reduces motivation for metadata producers to produce content-rich metadata. If the only significant use of the detailed, structured metadata is to format into text for people to read, then the detailed information could be put in free text elements and be just as useful. In order for complex metadata encoding and content to be useful, there must be clear and unambiguous conventions on the encoding that are utilized by the community that wishes to take advantage of advanced metadata

  12. Visualization of JPEG Metadata

    Science.gov (United States)

    Malik Mohamad, Kamaruddin; Deris, Mustafa Mat

    There are a lot of information embedded in JPEG image than just graphics. Visualization of its metadata would benefit digital forensic investigator to view embedded data including corrupted image where no graphics can be displayed in order to assist in evidence collection for cases such as child pornography or steganography. There are already available tools such as metadata readers, editors and extraction tools but mostly focusing on visualizing attribute information of JPEG Exif. However, none have been done to visualize metadata by consolidating markers summary, header structure, Huffman table and quantization table in a single program. In this paper, metadata visualization is done by developing a program that able to summarize all existing markers, header structure, Huffman table and quantization table in JPEG. The result shows that visualization of metadata helps viewing the hidden information within JPEG more easily.

  13. No More Metadata!

    Science.gov (United States)

    Baumann, Peter

    2014-05-01

    For well-known technologically motivated reasons, communities have developed the distinction between data and metadata. Mainly this was because data were too big to analyze, and often too complex as well. Therefore, metadata were established as a kind of summaries which allow browsing and search, albeit only on the criteria preselected by the metadata provider. The result is that metadata are considered smart, queryable, and agile whereas the underlying data typically are seen as big, difficult to understand and interpret, unavailable for analysis. Common sense has it that in general data should be touched upon only once a meaningful focusing and downsizing of the topical dataset has been achieved through elaborate metadata retrieval. With the advent of Big Data technology we are in a position ot overcome this age-old digital divide. Utilizing NewSQL concepts, query techniques go beyond the classical set paradigm and can also handle large graphs and arrays. Access and retrieval can be accomplished on a high semantic level. In our presentation we show, on the example of array data, how the data/metadata divide can be effectively eliminated today. We will do so by showing queries combining metadata and ground-truth data retrieval will be shown for SQL and XQuery.

  14. Screening for Salnity Tolerance Among Falcata Alfalfa PI's

    Science.gov (United States)

    Many western US rangelands high in salinity could benefit from a salt tolerant falcata type alfalfa. Our objective was to use a previously developed greenhouse screening protocol to characterize 32 PI's from the NPGS system for their relative ability to survive increasing levels of NaC1 relative to...

  15. GSN Photo Metadata

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — GSN Photo Metadata contains photographs of Global Climate Observing System (GCOS) Surface Network (GSN) stations that have been submitted to the National Climatic...

  16. Data, Metadata - Who Cares?

    Science.gov (United States)

    Baumann, Peter

    2013-04-01

    There is a traditional saying that metadata are understandable, semantic-rich, and searchable. Data, on the other hand, are big, with no accessible semantics, and just downloadable. Not only has this led to an imbalance of search support form a user perspective, but also underneath to a deep technology divide often using relational databases for metadata and bespoke archive solutions for data. Our vision is that this barrier will be overcome, and data and metadata become searchable likewise, leveraging the potential of semantic technologies in combination with scalability technologies. Ultimately, in this vision ad-hoc processing and filtering will not distinguish any longer, forming a uniformly accessible data universe. In the European EarthServer initiative, we work towards this vision by federating database-style raster query languages with metadata search and geo broker technology. We present our approach taken, how it can leverage OGC standards, the benefits envisaged, and first results.

  17. NAIP National Metadata

    Data.gov (United States)

    Farm Service Agency, Department of Agriculture — The NAIP National Metadata Map contains USGS Quarter Quad and NAIP Seamline boundaries for every year NAIP imagery has been collected. Clicking on the map also...

  18. Understanding Natural Language Metadata

    OpenAIRE

    Autayeu, Aliaksandr; Giunchiglia, Fausto; Andrews, Pierre

    2010-01-01

    Handling everyday tasks such as search, classication and integration is becoming increasingly dicult and sometimes even impossible due to the increasing streams of data available. To overcome such an information overload we need more accurate information processing tools capable of handling big amounts of data. In particular, handling metadata can give us leverage over the data and enable structured processing of data, however, while some of this metadata is in a computer readable format, som...

  19. Metadata and provenance management

    OpenAIRE

    Deelman, E.; Berriman, B.; Chervenak, A.; Corcho, Oscar; Groth, P; Moreau, L

    2009-01-01

    Scientists today collect, analyze, and generate TeraBytes and PetaBytes of data. These data are often shared and further processed and analyzed among collaborators. In order to facilitate sharing and data interpretations, data need to carry with it metadata about how the data was collected or generated, and provenance information about how the data was processed. This chapter describes metadata and provenance in the context of the data lifecycle. It also gives an overview of the approaches to...

  20. Establishing alfalfa in silage corn

    Science.gov (United States)

    According to recent agricultural statistics, alfalfa was planted on 0.44 million acres and harvested from 2.2 million acres and silage corn was planted and harvested from 1.0 million acres per year in Wisconsin. Because both crops are often grown in rotation, alfalfa could be interseeded at corn pla...

  1. Metadata and the Web

    Directory of Open Access Journals (Sweden)

    Mehdi Safari

    2004-12-01

    Full Text Available The rapid increase in the number and variety of resources on the World Wide Web has made the problem of resource description and discovery central to discussions about the efficiency and evolution of this medium. The inappropriateness of traditional schemas of resource description for web resources has encouraged significant activities recently on defining web-compatible schemas named "metadata". While conceptually old for library and information professionals, metadata has taken more significant and paramount role than ever before and is considered as the golden key for the next evolution of the web in the form of semantic web. This article is intended to be a brief introduction to metadata and tries to present its overview in the web.

  2. Simplified Metadata Curation via the Metadata Management Tool

    Science.gov (United States)

    Shum, D.; Pilone, D.

    2015-12-01

    The Metadata Management Tool (MMT) is the newest capability developed as part of NASA Earth Observing System Data and Information System's (EOSDIS) efforts to simplify metadata creation and improve metadata quality. The MMT was developed via an agile methodology, taking into account inputs from GCMD's science coordinators and other end-users. In its initial release, the MMT uses the Unified Metadata Model for Collections (UMM-C) to allow metadata providers to easily create and update collection records in the ISO-19115 format. Through a simplified UI experience, metadata curators can create and edit collections without full knowledge of the NASA Best Practices implementation of ISO-19115 format, while still generating compliant metadata. More experienced users are also able to access raw metadata to build more complex records as needed. In future releases, the MMT will build upon recent work done in the community to assess metadata quality and compliance with a variety of standards through application of metadata rubrics. The tool will provide users with clear guidance as to how to easily change their metadata in order to improve their quality and compliance. Through these features, the MMT allows data providers to create and maintain compliant and high quality metadata in a short amount of time.

  3. [Alfalfa Planting as weed control

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document is a letter to farming cooperators regarding the stipulations surrounding alfalfa plantings in lieu of small grain plantings to provide weed control,...

  4. A programmatic view of metadata, metadata services, and metadata flow in ATLAS

    CERN Document Server

    Malon, D; The ATLAS collaboration; Gallas, E; Stewart, G

    2012-01-01

    The volume and diversity of metadata in an experiment of the size and scope of ATLAS are considerable. Even the definition of metadata may seem context-dependent: data that are primary for one purpose may be metadata for another. Trigger information and data from the Large Hadron Collider itself provide cases in point, but examples abound. Metadata about logical or physics constructs, such as data-taking periods and runs and luminosity blocks and events and algorithms, often need to be mapped to deployment and production constructs, such as datasets and jobs and files and software versions, and vice versa. Metadata at one level of granularity may have implications at another. ATLAS metadata services must integrate and federate information from inhomogeneous sources and repositories, map metadata about logical or physics constructs to deployment and production constructs, provide a means to associate metadata at one level of granularity with processing or decision-making at another, offer a coherent and integr...

  5. A Programmatic View of Metadata, Metadata Services, and Metadata Flow in ATLAS

    CERN Document Server

    CERN. Geneva

    2012-01-01

    The volume and diversity of metadata in an experiment of the size and scope of ATLAS is considerable. Even the definition of metadata may seem context-dependent: data that are primary for one purpose may be metadata for another. Trigger information and data from the Large Hadron Collider itself provide cases in point, but examples abound. Metadata about logical or physics constructs, such as data-taking periods and runs and luminosity blocks and events and algorithms, often need to be mapped to deployment and production constructs, such as datasets and jobs and files and software versions, and vice versa. Metadata at one level of granularity may have implications at another. ATLAS metadata services must integrate and federate information from inhomogeneous sources and repositories, map metadata about logical or physics constructs to deployment and production constructs, provide a means to associate metadata at one level of granularity with processing or decision-making at another, offer a coherent and ...

  6. A Programmatic View of Metadata, Metadata Services, and Metadata Flow in ATLAS

    CERN Document Server

    Malon, D; The ATLAS collaboration; Gallas, E; Stewart, G

    2012-01-01

    The volume and diversity of metadata in an experiment of the size and scope of ATLAS are considerable. Even the definition of metadata may seem context-dependent: data that are primary for one purpose may be metadata for another. Trigger information and data from the Large Hadron Collider itself provide cases in point, but examples abound. Metadata about logical or physics constructs, such as data-taking periods and runs and luminosity blocks and events and algorithms, often need to be mapped to deployment and production constructs, such as datasets and jobs and files and software versions, and vice versa. Metadata at one level of granularity may have implications at another. ATLAS metadata services must integrate and federate information from inhomogeneous sources and repositories, map metadata about logical or physics constructs to deployment and production constructs, provide a means to associate metadata at one level of granularity with processing or decision-making at another, offer a coherent and integr...

  7. Occurrence of Transgenic Feral Alfalfa (Medicago sativa subsp. sativa L. in Alfalfa Seed Production Areas in the United States.

    Directory of Open Access Journals (Sweden)

    Stephanie L Greene

    Full Text Available The potential environmental risks of transgene exposure are not clear for alfalfa (Medicago sativa subsp. sativa, a perennial crop that is cross-pollinated by insects. We gathered data on feral alfalfa in major alfalfa seed-production areas in the western United States to (1 evaluate evidence that feral transgenic plants spread transgenes and (2 determine environmental and agricultural production factors influencing the location of feral alfalfa, especially transgenic plants. Road verges in Fresno, California; Canyon, Idaho; and Walla Walla, Washington were surveyed in 2011 and 2012 for feral plants, and samples were tested for the CP4 EPSPS protein that conveys resistance to glyphosate. Of 4580 sites surveyed, feral plants were observed at 404 sites. Twenty-seven percent of these sites had transgenic plants. The frequency of sites having transgenic feral plants varied among our study areas. Transgenic plants were found in 32.7%, 21.4.7% and 8.3% of feral plant sites in Fresno, Canyon and Walla Walla, respectively. Spatial analysis suggested that feral populations started independently and tended to cluster in seed and hay production areas, places where seed tended to drop. Significant but low spatial auto correlation suggested that in some instances, plants colonized nearby locations. Neighboring feral plants were frequently within pollinator foraging range; however, further research is needed to confirm transgene flow. Locations of feral plant clusters were not well predicted by environmental and production variables. However, the likelihood of seed spillage during production and transport had predictive value in explaining the occurrence of transgenic feral populations. Our study confirms that genetically engineered alfalfa has dispersed into the environment, and suggests that minimizing seed spillage and eradicating feral alfalfa along road sides would be effective strategies to minimize transgene dispersal.

  8. Stegacryption of DICOM Metadata

    OpenAIRE

    Blackledge, Jonathan; Al-Rawi, A.

    2014-01-01

    Digital Imaging and Communications in Medicine (DICOM) files are an international data standard for storing, distributing and processing medical images of all types. DICOM files include a header file containing Metadata on details which may include information on the patient. This often inhibits the free distribution of DICOM files due to issues relating to the confidentiality of data on identifiable living people, thereby limiting the potential for other radiologists to provide a diagnosis, ...

  9. Cytometry metadata in XML

    Science.gov (United States)

    Leif, Robert C.; Leif, Stephanie H.

    2016-04-01

    Introduction: The International Society for Advancement of Cytometry (ISAC) has created a standard for the Minimum Information about a Flow Cytometry Experiment (MIFlowCyt 1.0). CytometryML will serve as a common metadata standard for flow and image cytometry (digital microscopy). Methods: The MIFlowCyt data-types were created, as is the rest of CytometryML, in the XML Schema Definition Language (XSD1.1). The datatypes are primarily based on the Flow Cytometry and the Digital Imaging and Communication (DICOM) standards. A small section of the code was formatted with standard HTML formatting elements (p, h1, h2, etc.). Results:1) The part of MIFlowCyt that describes the Experimental Overview including the specimen and substantial parts of several other major elements has been implemented as CytometryML XML schemas (www.cytometryml.org). 2) The feasibility of using MIFlowCyt to provide the combination of an overview, table of contents, and/or an index of a scientific paper or a report has been demonstrated. Previously, a sample electronic publication, EPUB, was created that could contain both MIFlowCyt metadata as well as the binary data. Conclusions: The use of CytometryML technology together with XHTML5 and CSS permits the metadata to be directly formatted and together with the binary data to be stored in an EPUB container. This will facilitate: formatting, data- mining, presentation, data verification, and inclusion in structured research, clinical, and regulatory documents, as well as demonstrate a publication's adherence to the MIFlowCyt standard, promote interoperability and should also result in the textual and numeric data being published using web technology without any change in composition.

  10. Federating Metadata Catalogs

    Science.gov (United States)

    Baru, C.; Lin, K.

    2009-04-01

    The Geosciences Network project (www.geongrid.org) has been developing cyberinfrastructure for data sharing in the Earth Science community based on a service-oriented architecture. The project defines a standard "software stack", which includes a standardized set of software modules and corresponding service interfaces. The system employs Grid certificates for distributed user authentication. The GEON Portal provides online access to these services via a set of portlets. This service-oriented approach has enabled the GEON network to easily expand to new sites and deploy the same infrastructure in new projects. To facilitate interoperation with other distributed geoinformatics environments, service standards are being defined and implemented for catalog services and federated search across distributed catalogs. The need arises because there may be multiple metadata catalogs in a distributed system, for example, for each institution, agency, geographic region, and/or country. Ideally, a geoinformatics user should be able to search across all such catalogs by making a single search request. In this paper, we describe our implementation for such a search capability across federated metadata catalogs in the GEON service-oriented architecture. The GEON catalog can be searched using spatial, temporal, and other metadata-based search criteria. The search can be invoked as a Web service and, thus, can be imbedded in any software application. The need for federated catalogs in GEON arises because, (i) GEON collaborators at the University of Hyderabad, India have deployed their own catalog, as part of the iGEON-India effort, to register information about local resources for broader access across the network, (ii) GEON collaborators in the GEO Grid (Global Earth Observations Grid) project at AIST, Japan have implemented a catalog for their ASTER data products, and (iii) we have recently deployed a search service to access all data products from the EarthScope project in the US

  11. Mercury Toolset for Spatiotemporal Metadata

    Science.gov (United States)

    Devarakonda, Ranjeet; Palanisamy, Giri; Green, James; Wilson, Bruce; Rhyne, B. Timothy; Lindsley, Chris

    2010-06-01

    Mercury (http://mercury.ornl.gov) is a set of tools for federated harvesting, searching, and retrieving metadata, particularly spatiotemporal metadata. Version 3.0 of the Mercury toolset provides orders of magnitude improvements in search speed, support for additional metadata formats, integration with Google Maps for spatial queries, facetted type search, support for RSS (Really Simple Syndication) delivery of search results, and enhanced customization to meet the needs of the multiple projects that use Mercury. It provides a single portal to very quickly search for data and information contained in disparate data management systems, each of which may use different metadata formats. Mercury harvests metadata and key data from contributing project servers distributed around the world and builds a centralized index. The search interfaces then allow the users to perform a variety of fielded, spatial, and temporal searches across these metadata sources. This centralized repository of metadata with distributed data sources provides extremely fast search results to the user, while allowing data providers to advertise the availability of their data and maintain complete control and ownership of that data. Mercury periodically (typically daily)harvests metadata sources through a collection of interfaces and re-indexes these metadata to provide extremely rapid search capabilities, even over collections with tens of millions of metadata records. A number of both graphical and application interfaces have been constructed within Mercury, to enable both human users and other computer programs to perform queries. Mercury was also designed to support multiple different projects, so that the particular fields that can be queried and used with search filters are easy to configure for each different project.

  12. Mercury Toolset for Spatiotemporal Metadata

    Science.gov (United States)

    Wilson, Bruce E.; Palanisamy, Giri; Devarakonda, Ranjeet; Rhyne, B. Timothy; Lindsley, Chris; Green, James

    2010-01-01

    Mercury (http://mercury.ornl.gov) is a set of tools for federated harvesting, searching, and retrieving metadata, particularly spatiotemporal metadata. Version 3.0 of the Mercury toolset provides orders of magnitude improvements in search speed, support for additional metadata formats, integration with Google Maps for spatial queries, facetted type search, support for RSS (Really Simple Syndication) delivery of search results, and enhanced customization to meet the needs of the multiple projects that use Mercury. It provides a single portal to very quickly search for data and information contained in disparate data management systems, each of which may use different metadata formats. Mercury harvests metadata and key data from contributing project servers distributed around the world and builds a centralized index. The search interfaces then allow the users to perform a variety of fielded, spatial, and temporal searches across these metadata sources. This centralized repository of metadata with distributed data sources provides extremely fast search results to the user, while allowing data providers to advertise the availability of their data and maintain complete control and ownership of that data. Mercury periodically (typically daily) harvests metadata sources through a collection of interfaces and re-indexes these metadata to provide extremely rapid search capabilities, even over collections with tens of millions of metadata records. A number of both graphical and application interfaces have been constructed within Mercury, to enable both human users and other computer programs to perform queries. Mercury was also designed to support multiple different projects, so that the particular fields that can be queried and used with search filters are easy to configure for each different project.

  13. Alfalfa stem tissues: Cell wall deposition, composition, and degradability

    NARCIS (Netherlands)

    Jung, H.G.; Engels, F.M.

    2002-01-01

    Declining cell wall degradability of alfalfa (Medicago sativa L.) stems with maturation limits the nutritional value of alfalfa for ruminants. This study characterized changes in cell wall concentration, composition, and degradability by rumen microbes resulting from alfalfa stem tissue proliferatio

  14. ATLAS Metadata Interface (AMI), a generic metadata framework

    CERN Document Server

    Fulachier, Jerome; The ATLAS collaboration

    2016-01-01

    The ATLAS Metadata Interface (AMI) is a mature application of more than 15 years of existence. Mainly used by the ATLAS experiment at CERN, it consists of a very generic tool ecosystem for metadata aggregation and cataloguing. We briefly describe the architecture, the main services and the benefits of using AMI in big collaborations, especially for high energy physics. We focus on the recent improvements, for instance: the lightweight clients (Python, Javascript, C++), the new smart task server system and the Web 2.0 AMI framework for simplifying the development of metadata-oriented web interfaces.

  15. Developing the CUAHSI Metadata Profile

    Science.gov (United States)

    Piasecki, M.; Bermudez, L.; Islam, S.; Beran, B.

    2004-12-01

    The Hydrologic Information System (HIS), of the Consortium of Universities for the Advancement of Hydrologic Science Inc., (CUAHSI), has as one of its goals to improve access to large volume, high quality, and heterogeneous hydrologic data sets. This will be attained in part by adopting a community metadata profile to achieve consistent descriptions that will facilitate data discovery. However, common standards are quite general in nature and typically lack domain specific vocabularies, complicating the adoption of standards for specific communities. We will show and demonstrate the problems encountered in the process of adopting ISO standards to create a CUAHSI metadata profile. The final schema is expressed in a simple metadata format, Metadata Template File (MTF), to leverage metadata annotations/viewer tools already developed by the San Diego Super Computer Center. The steps performed to create an MTF starting from ISO 19115:2003 are the following: 1) creation of ontologies using the Web Ontology Language (OWL) for ISO:19115 2003 and related ISO/TC 211 documents; 2) conceptualization in OWL of related hydrologic vocabularies such as NASA's Global Change Master Directory and units from the Hydrologic Handbook; 3) definition of CUAHSI profile by importing and extending the previous ontologies; 4) explicit creation of CUAHSI core set 5) export of the core set to MTF); 6) definition of metadata blocks for arbitrary digital objects (e.g. time series vs static-spatial data) using ISO's methodology for feature cataloguing; and 7) export of metadata blocks to MTF.

  16. Metadata Dictionary Database: A Proposed Tool for Academic Library Metadata Management

    Science.gov (United States)

    Southwick, Silvia B.; Lampert, Cory

    2011-01-01

    This article proposes a metadata dictionary (MDD) be used as a tool for metadata management. The MDD is a repository of critical data necessary for managing metadata to create "shareable" digital collections. An operational definition of metadata management is provided. The authors explore activities involved in metadata management in…

  17. The metadata manual a practical workbook

    CERN Document Server

    Lubas, Rebecca; Schneider, Ingrid

    2013-01-01

    Cultural heritage professionals have high levels of training in metadata. However, the institutions in which they practice often depend on support staff, volunteers, and students in order to function. With limited time and funding for training in metadata creation for digital collections, there are often many questions about metadata without a reliable, direct source for answers. The Metadata Manual provides such a resource, answering basic metadata questions that may appear, and exploring metadata from a beginner's perspective. This title covers metadata basics, XML basics, Dublin Core, VRA C

  18. Automatic Metadata Generation using Associative Networks

    CERN Document Server

    Rodriguez, Marko A; Van de Sompel, Herbert

    2008-01-01

    In spite of its tremendous value, metadata is generally sparse and incomplete, thereby hampering the effectiveness of digital information services. Many of the existing mechanisms for the automated creation of metadata rely primarily on content analysis which can be costly and inefficient. The automatic metadata generation system proposed in this article leverages resource relationships generated from existing metadata as a medium for propagation from metadata-rich to metadata-poor resources. Because of its independence from content analysis, it can be applied to a wide variety of resource media types and is shown to be computationally inexpensive. The proposed method operates through two distinct phases. Occurrence and co-occurrence algorithms first generate an associative network of repository resources leveraging existing repository metadata. Second, using the associative network as a substrate, metadata associated with metadata-rich resources is propagated to metadata-poor resources by means of a discrete...

  19. phosphorus retention data and metadata

    Data.gov (United States)

    U.S. Environmental Protection Agency — phosphorus retention in wetlands data and metadata This dataset is associated with the following publication: Lane , C., and B. Autrey. Phosphorus retention of...

  20. FSA 2002 Digital Orthophoto Metadata

    Data.gov (United States)

    Minnesota Department of Natural Resources — Metadata for the 2002 FSA Color Orthophotos Layer. Each orthophoto is represented by a Quarter 24k Quad tile polygon. The polygon attributes contain the...

  1. Geoparsing the Cultural Heritage Metadata

    OpenAIRE

    Vlasta Vodeb

    2013-01-01

    ABSTRACTGeoparsing is a method for automatic extraction of geographic coordinates on the basis of unstructured text and content. The method is also usable for metadata of immovable, movable and intangible cultural heritage especially when geographic coordinates were not part of metadata description in documentation system. In this paper the usability and efficiency of online geoparsing services are presented, with the emphasis on e-service Europeana Geoparser. The analysis of spatial accuracy...

  2. Master Metadata Repository and Metadata-Management System

    Science.gov (United States)

    Armstrong, Edward; Reed, Nate; Zhang, Wen

    2007-01-01

    A master metadata repository (MMR) software system manages the storage and searching of metadata pertaining to data from national and international satellite sources of the Global Ocean Data Assimilation Experiment (GODAE) High Resolution Sea Surface Temperature Pilot Project [GHRSSTPP]. These sources produce a total of hundreds of data files daily, each file classified as one of more than ten data products representing global sea-surface temperatures. The MMR is a relational database wherein the metadata are divided into granulelevel records [denoted file records (FRs)] for individual satellite files and collection-level records [denoted data set descriptions (DSDs)] that describe metadata common to all the files from a specific data product. FRs and DSDs adhere to the NASA Directory Interchange Format (DIF). The FRs and DSDs are contained in separate subdatabases linked by a common field. The MMR is configured in MySQL database software with custom Practical Extraction and Reporting Language (PERL) programs to validate and ingest the metadata records. The database contents are converted into the Federal Geographic Data Committee (FGDC) standard format by use of the Extensible Markup Language (XML). A Web interface enables users to search for availability of data from all sources.

  3. Weed management research in alfalfa seed production in Washington state

    Science.gov (United States)

    Weed control is an important component of producing high quality and high yielding alfalfa seed. Alfalfa seed is produced with wider row and lower plant populations than alfalfa forage requiring greater weed management inputs. Flumioxazin was evaluated for weed control in alfalfa seed and forage pro...

  4. On the Origin of Metadata

    Directory of Open Access Journals (Sweden)

    Sam Coppens

    2012-12-01

    Full Text Available Metadata has been around and has evolved for centuries, albeit not recognized as such. Medieval manuscripts typically had illuminations at the start of each chapter, being both a kind of signature for the author writing the script and a pictorial chapter anchor for the illiterates at the time. Nowadays, there is so much fragmented information on the Internet that users sometimes fail to distinguish the real facts from some bended truth, let alone being able to interconnect different facts. Here, the metadata can both act as noise-reductors for detailed recommendations to the end-users, as it can be the catalyst to interconnect related information. Over time, metadata thus not only has had different modes of information, but furthermore, metadata’s relation of information to meaning, i.e., “semantics”, evolved. Darwin’s evolutionary propositions, from “species have an unlimited reproductive capacity”, over “natural selection”, to “the cooperation of mutations leads to adaptation to the environment” show remarkable parallels to both metadata’s different modes of information and to its relation of information to meaning over time. In this paper, we will show that the evolution of the use of (metadata can be mapped to Darwin’s nine evolutionary propositions. As mankind and its behavior are products of an evolutionary process, the evolutionary process of metadata with its different modes of information is on the verge of a new-semantic-era.

  5. THE NEW ONLINE METADATA EDITOR FOR GENERATING STRUCTURED METADATA

    Energy Technology Data Exchange (ETDEWEB)

    Devarakonda, Ranjeet [ORNL; Shrestha, Biva [ORNL; Palanisamy, Giri [ORNL; Hook, Leslie A [ORNL; Killeffer, Terri S [ORNL; Boden, Thomas A [ORNL; Cook, Robert B [ORNL; Zolly, Lisa [United States Geological Service (USGS); Hutchison, Viv [United States Geological Service (USGS); Frame, Mike [United States Geological Service (USGS); Cialella, Alice [Brookhaven National Laboratory (BNL); Lazer, Kathy [Brookhaven National Laboratory (BNL)

    2014-01-01

    Nobody is better suited to describe data than the scientist who created it. This description about a data is called Metadata. In general terms, Metadata represents the who, what, when, where, why and how of the dataset [1]. eXtensible Markup Language (XML) is the preferred output format for metadata, as it makes it portable and, more importantly, suitable for system discoverability. The newly developed ORNL Metadata Editor (OME) is a Web-based tool that allows users to create and maintain XML files containing key information, or metadata, about the research. Metadata include information about the specific projects, parameters, time periods, and locations associated with the data. Such information helps put the research findings in context. In addition, the metadata produced using OME will allow other researchers to find these data via Metadata clearinghouses like Mercury [2][4]. OME is part of ORNL s Mercury software fleet [2][3]. It was jointly developed to support projects funded by the United States Geological Survey (USGS), U.S. Department of Energy (DOE), National Aeronautics and Space Administration (NASA) and National Oceanic and Atmospheric Administration (NOAA). OME s architecture provides a customizable interface to support project-specific requirements. Using this new architecture, the ORNL team developed OME instances for USGS s Core Science Analytics, Synthesis, and Libraries (CSAS&L), DOE s Next Generation Ecosystem Experiments (NGEE) and Atmospheric Radiation Measurement (ARM) Program, and the international Surface Ocean Carbon Dioxide ATlas (SOCAT). Researchers simply use the ORNL Metadata Editor to enter relevant metadata into a Web-based form. From the information on the form, the Metadata Editor can create an XML file on the server that the editor is installed or to the user s personal computer. Researchers can also use the ORNL Metadata Editor to modify existing XML metadata files. As an example, an NGEE Arctic scientist use OME to register

  6. Geoparsing the Cultural Heritage Metadata

    Directory of Open Access Journals (Sweden)

    Vlasta Vodeb

    2013-09-01

    Full Text Available ABSTRACTGeoparsing is a method for automatic extraction of geographic coordinates on the basis of unstructured text and content. The method is also usable for metadata of immovable, movable and intangible cultural heritage especially when geographic coordinates were not part of metadata description in documentation system. In this paper the usability and efficiency of online geoparsing services are presented, with the emphasis on e-service Europeana Geoparser. The analysis of spatial accuracy of the Europeana Geoparser is presented with the analysis of the Slovenian cultural heritage objects. At the end an evaluation of usability of the method for automated extraction of geographic coordinates for cultural heritage is given and debated.

  7. Enriching The Metadata On CDS

    CERN Document Server

    Chhibber, Nalin

    2014-01-01

    The project report revolves around the open source software package called Invenio. It provides the tools for management of digital assets in a repository and drives CERN Document Server. Primary objective is to enhance the existing metadata in CDS with data from other libraries. An implicit part of this task is to manage disambiguation (within incoming data), removal of multiple entries and handle replications between new and existing records. All such elements and their corresponding changes are integrated within Invenio to make the upgraded metadata available on the CDS. Latter part of the report discuss some changes related to the Invenio code-base itself.

  8. U.S. EPA Metadata Editor (EME)

    Data.gov (United States)

    U.S. Environmental Protection Agency — The EPA Metadata Editor (EME) allows users to create geospatial metadata that meets EPA's requirements. The tool has been developed as a desktop application that...

  9. Alfalfa Hay Quality and Alternative Pricing Systems

    OpenAIRE

    Hopper, Jared A.; Peterson, Hikaru Hanawa; Burton, Robert O., Jr.

    2004-01-01

    Price-quality relationships for alfalfa hay were analyzed by hedonic pricing models using 1996-2001 Wisconsin auction data. Individual nutrients included in the analysis all affected alfalfa price, with acid detergent fiber accounting for the largest impact. Alternative pricing models, based on an aggregate quality index or detailed quality information, were similar in their ability to predict price. However, disaggregating price predictions to account for differences in relative feed value (...

  10. Virulence of Fusarium species to alfalfa seedlings

    OpenAIRE

    Krnjaja Vesna; Lević Jelena; Ivanović M.; Tomić Zorica P.

    2005-01-01

    In in vitro conditions, virulence of 91 isolates of species Fusarium genus (F. oxysporum, F. solani, F. acuminatum, F. equiseti, F. arthrosporioides, F. prolifera- tum, F. avenaceum, F. semitectum, F. tricinctum, F. sporotrichioides and F. graminearum) towards alfalfa seedlings was investigated. Isolates of investigated species originated from diseased alfalfa plants collected at four locations in Serbia based on symptoms of wilting caused by Fusarium and root rotting. Pathogenicity and virul...

  11. Virulence of Fusarium species to alfalfa seedlings

    OpenAIRE

    Krnjaja Vesna; Lević Jelena T.; Ivanović Mirko; Tomić Zorica P.

    2005-01-01

    In in vitro conditions, virulence of 91 isolates of species Fusarium genus (F. oxysporum, F. solani, F. acuminatum, F. equiseti, F. arthrosporioides, F. proliferatum, F. avenaceum, F. semitectum, F. tricinctum, F. sporotrichioides and F. graminearum) towards alfalfa seedlings was investigated. Isolates of investigated species originated from diseased alfalfa plants collected on four locations in Serbia based on symptoms of wilting caused by fusarium and root rotting. Pathogenicity and virulen...

  12. The essential guide to metadata for books

    CERN Document Server

    Register, Renee

    2013-01-01

    In The Essential Guide to Metadata for Books, you will learn exactly what you need to know to effectively generate, handle and disseminate metadata for books and ebooks. This comprehensive but digestible document will explain the life-cycle of book metadata, industry standards, XML, ONIX and the essential elements of metadata. It will also show you how effective, well-organized metadata can improve your efforts to sell a book, especially when it comes to marketing, discoverability and converting at the point of sale. This information-packed document also includes a glossary of terms

  13. Log-less metadata management on metadata server for parallel file systems.

    Science.gov (United States)

    Liao, Jianwei; Xiao, Guoqiang; Peng, Xiaoning

    2014-01-01

    This paper presents a novel metadata management mechanism on the metadata server (MDS) for parallel and distributed file systems. In this technique, the client file system backs up the sent metadata requests, which have been handled by the metadata server, so that the MDS does not need to log metadata changes to nonvolatile storage for achieving highly available metadata service, as well as better performance improvement in metadata processing. As the client file system backs up certain sent metadata requests in its memory, the overhead for handling these backup requests is much smaller than that brought by the metadata server, while it adopts logging or journaling to yield highly available metadata service. The experimental results show that this newly proposed mechanism can significantly improve the speed of metadata processing and render a better I/O data throughput, in contrast to conventional metadata management schemes, that is, logging or journaling on MDS. Besides, a complete metadata recovery can be achieved by replaying the backup logs cached by all involved clients, when the metadata server has crashed or gone into nonoperational state exceptionally.

  14. Log-Less Metadata Management on Metadata Server for Parallel File Systems

    Directory of Open Access Journals (Sweden)

    Jianwei Liao

    2014-01-01

    Full Text Available This paper presents a novel metadata management mechanism on the metadata server (MDS for parallel and distributed file systems. In this technique, the client file system backs up the sent metadata requests, which have been handled by the metadata server, so that the MDS does not need to log metadata changes to nonvolatile storage for achieving highly available metadata service, as well as better performance improvement in metadata processing. As the client file system backs up certain sent metadata requests in its memory, the overhead for handling these backup requests is much smaller than that brought by the metadata server, while it adopts logging or journaling to yield highly available metadata service. The experimental results show that this newly proposed mechanism can significantly improve the speed of metadata processing and render a better I/O data throughput, in contrast to conventional metadata management schemes, that is, logging or journaling on MDS. Besides, a complete metadata recovery can be achieved by replaying the backup logs cached by all involved clients, when the metadata server has crashed or gone into nonoperational state exceptionally.

  15. Requirements and information metadata system

    OpenAIRE

    Beckman, Erin M.

    2007-01-01

    CHDS State/Local This thesis proposes an adoption of a data schema called RIMS (Requirements and Information Metadata System) developed as a pilot project in the Pittsburgh Field Office of the FBI and sets out to determine if RIMS could be an effective and efficient method to capture, catalogue and retrieve intelligence information within the Federal Bureau of Investigation (FBI). RIMS would enhance the search platform used by FBI analysts and investigators who gather or data mine exi...

  16. Correlations among alfalfa yield components

    Directory of Open Access Journals (Sweden)

    Ilić Olivera

    2006-01-01

    Full Text Available Presented in this paper are the results of our study of correlations among yield components in ten alfalfa genotypes under open pollination (polycross conditions. The study was conducted between 2000 and 2002 at the Rimski Sancevi Experiment Field of the Institute of Field and Vegetable Crops in Novi Sad. Highly significant correlations were found between pod number per inflorescence and seed number per inflorescence (r= 0.645 as well as between seed number per pod and seed number per inflorescence (r= 0.685. Similarly, the correlation between inflorescence number per stem and seed yield was significant and positive (r= 0.589. Negative correlations existed between ovule number per ovary on the one hand and seed yield and inflorescence number per stem on the other (r= -0.617 and r= -0.598, respectively. The highest seed yield was achieved with the cultivar Europe (651.4 kg ha-1 and the lowest with the genotype Le-6 (426.25 kg ha-1. The difference was highly significant (CV= 14,93%.

  17. Mutants of alfalfa mosaic virus

    International Nuclear Information System (INIS)

    In this thesis the isolation and characterization of a number of mutants of alfalfa mosaic virus, a plant virus with a coat protein dependent genome, is described. Thermo-sensitive (ts) mutants were selected since, at least theoretically, ts mutations can be present in all virus coded functions. It was found that a high percentage of spontaneous mutants, isolated because of their aberrant symptoms, were ts. The majority of these isolates could grow at the non-permissive temperature in the presence of a single wild type (wt) component. To increase the mutation rate virus preparations were treated with several mutagens. After nitrous acid treatment or irradiation with ultraviolet light, an increase in the level of mutations was observed. UV irradiation was preferred since it did not require large amounts of purified viral components. During the preliminary characterization of potential ts mutants the author also obtained one structural and several symptom mutants which were analysed further (chapter 7, 8 and 9). The properties of the ts mutants are described in chapter 3-7. (Auth.)

  18. Security in a Replicated Metadata Catalogue

    CERN Document Server

    Koblitz, B

    2007-01-01

    The gLite-AMGA metadata has been developed by NA4 to provide simple relational metadata access for the EGEE user community. As advanced features, which will be the focus of this presentation, AMGA provides very fine-grained security also in connection with the built-in support for replication and federation of metadata. AMGA is extensively used by the biomedical community to store medical images metadata, digital libraries, in HEP for logging and bookkeeping data and in the climate community. The biomedical community intends to deploy a distributed metadata system for medical images consisting of various sites, which range from hospitals to computing centres. Only safe sharing of the highly sensitive metadata as provided in AMGA makes such a scenario possible. Other scenarios are digital libraries, which federate copyright protected (meta-) data into a common catalogue. The biomedical and digital libraries have been deployed using a centralized structure already for some time. They now intend to decentralize ...

  19. XML for catalogers and metadata librarians

    CERN Document Server

    Cole, Timothy W

    2013-01-01

    How are today's librarians to manage and describe the everexpanding volumes of resources, in both digital and print formats? The use of XML in cataloging and metadata workflows can improve metadata quality, the consistency of cataloging workflows, and adherence to standards. This book is intended to enable current and future catalogers and metadata librarians to progress beyond a bare surfacelevel acquaintance with XML, thereby enabling them to integrate XML technologies more fully into their cataloging workflows. Building on the wealth of work on library descriptive practices, cataloging, and metadata, XML for Catalogers and Metadata Librarians explores the use of XML to serialize, process, share, and manage library catalog and metadata records. The authors' expert treatment of the topic is written to be accessible to those with little or no prior practical knowledge of or experience with how XML is used. Readers will gain an educated appreciation of the nuances of XML and grasp the benefit of more advanced ...

  20. Ontology Based Metadata Management for National Healthcare Data Dictionary

    Directory of Open Access Journals (Sweden)

    Yasemin Yüksek

    2012-02-01

    Full Text Available Ontology based metadata is based on ontologies that give formal semantics to information for content level. In this study, ontology based metadata management that intended the metadata modeling developed for National Health Data Dictionary (NHDD was proposed. NHDD is used as a reference to all health institutions in Turkey and it provides great contribution in terms of the terminology. The approach of the proposed ontology based metadata management was achieved by using modeling methodology of metadata requirements. This methodology includes determination of metadata beneficiaries, listing of metadata requirements for each beneficiary, identification of the source of metadata, categorizing of metadata and a metamodel building.

  1. A Distributed Infrastructure for Metadata about Metadata: The HDMM Architectural Style and PORTAL-DOORS System

    Directory of Open Access Journals (Sweden)

    Carl Taswell

    2010-06-01

    Full Text Available Both the IRIS-DNS System and the PORTAL-DOORS System share a common architectural style for pervasive metadata networks that operate as distributed metadata management systems with hierarchical authorities for entity registering and attribute publishing. Hierarchical control of metadata redistribution throughout the registry-directory networks constitutes an essential characteristic of this architectural style called Hierarchically Distributed Mobile Metadata (HDMM with its focus on moving the metadata for who what where as fast as possible from servers in response to requests from clients. The novel concept of multilevel metadata about metadata has also been defined for the PORTAL-DOORS System with the use of entity, record, infoset, representation and message metadata. Other new features implemented include the use of aliases, priorities and metaresources.

  2. Automatic metadata generation for learning objects

    OpenAIRE

    Ramšak, Maja

    2011-01-01

    One of the results of modern era is a massive production and usage of manifold electronic resources. Number of digital collections, digital libraries and repositories who offer these resources to users, usually by search mechanisms, are increasing. This is especially evident in scientific research and education area. Above mentioned services for managing electronic resources use metadata and metadata records, respectively. Many authors present metadata as data about data or information a...

  3. The Undergraduate ALFALFA Team: Collaborative Research Projects

    Science.gov (United States)

    Cannon, John M.; Koopmann, Rebecca A.; Haynes, Martha P.; Undergraduate ALFALFA Team, ALFALFA Team

    2016-01-01

    The NSF-sponsored Undergraduate ALFALFA (Arecibo Legacy Fast ALFA) Team (UAT) has allowed faculty and students from a wide range of public and private colleges and especially those with small astronomy programs to learn how science is accomplished in a large collaboration while contributing to the scientific goals of a legacy radio astronomy survey. The UAT has achieved this through close collaboration with ALFALFA PIs to identify research areas accessible to undergraduates. In this talk we will summarize the main research efforts of the UAT, including multiwavelength followup observations of ALFALFA sources, the UAT Collaborative Groups Project, the Survey of HI in Extremely Low-mass Dwarfs (SHIELD), and the Arecibo Pisces-Perseus Supercluster Survey. This work has been supported by NSF grants AST-0724918/0902211, AST-075267/0903394, AST-0725380, and AST-1211005.

  4. Virulence of Fusarium species to alfalfa seedlings

    Directory of Open Access Journals (Sweden)

    Krnjaja Vesna

    2005-01-01

    Full Text Available In in vitro conditions, virulence of 91 isolates of species Fusarium genus (F. oxysporum, F. solani, F. acuminatum, F. equiseti, F. arthrosporioides, F. prolifera- tum, F. avenaceum, F. semitectum, F. tricinctum, F. sporotrichioides and F. graminearum towards alfalfa seedlings was investigated. Isolates of investigated species originated from diseased alfalfa plants collected at four locations in Serbia based on symptoms of wilting caused by Fusarium and root rotting. Pathogenicity and virulence of investigated isolates of Fusarium spp. were determined by visual evaluation of inoculated seedlings of cultivar K28 in laboratory conditions. All isolated of investigated species had pathogenic effect on alfalfa seedlings which expressed symptoms such as necrosis of root, moist rotting and "melting of seedlings". Colour of necrotic root tissue varied from light brown, brown lipstick red to explicit black, depending on the Fusarium species. Strong virulence was established in 48 isolates, medium virulence in 31 and weak virulence in 12 isolates.

  5. Virulence of Fusarium species to alfalfa seedlings

    Directory of Open Access Journals (Sweden)

    Krnjaja Vesna

    2005-01-01

    Full Text Available In in vitro conditions, virulence of 91 isolates of species Fusarium genus (F. oxysporum, F. solani, F. acuminatum, F. equiseti, F. arthrosporioides, F. proliferatum, F. avenaceum, F. semitectum, F. tricinctum, F. sporotrichioides and F. graminearum towards alfalfa seedlings was investigated. Isolates of investigated species originated from diseased alfalfa plants collected on four locations in Serbia based on symptoms of wilting caused by fusarium and root rotting. Pathogenicity and virulence of investigated isolates of Fusarium spp. were determined by visual evaluation of inoculated seedlings of cultivars K28 in laboratory conditions. All isolated of investigated species had pathogenic effect on alfalfa seedlings, which expressed symptoms such as necrosis of root, moist rotting and "melting of seedlings". Colour of necrotic root tissue varied from light brown, brown, lipstick red to explicit black, depending on the Fusarium species. Strong virulence was established in 48 isolates, medium virulence in 31 and weak virulence in 12 isolates.

  6. Critical Metadata for Spectroscopy Field Campaigns

    Directory of Open Access Journals (Sweden)

    Barbara A. Rasaiah

    2014-04-01

    Full Text Available A field spectroscopy metadata standard is defined as those data elements that explicitly document the spectroscopy dataset and field protocols, sampling strategies, instrument properties and environmental and logistical variables. Standards for field spectroscopy metadata affect the quality, completeness, reliability, and usability of datasets created in situ. Currently there is no standardized methodology for documentation of in situ spectroscopy data or metadata. This paper presents results of an international experiment comprising a web-based survey and expert panel evaluation that investigated critical metadata in field spectroscopy. The survey participants were a diverse group of scientists experienced in gathering spectroscopy data across a wide range of disciplines. Overall, respondents were in agreement about a core metadataset for generic campaign metadata, allowing for a prioritization of critical metadata elements to be proposed including those relating to viewing geometry, location, general target and sampling properties, illumination, instrument properties, reference standards, calibration, hyperspectral signal properties, atmospheric conditions, and general project details. Consensus was greatest among individual expert groups in specific application domains. The results allow the identification of a core set of metadata fields that enforce long term data storage and serve as a foundation for a metadata standard. This paper is part one in a series about the core elements of a robust and flexible field spectroscopy metadata standard.

  7. Mitogenome metadata: current trends and proposed standards.

    Science.gov (United States)

    Strohm, Jeff H T; Gwiazdowski, Rodger A; Hanner, Robert

    2016-09-01

    Mitogenome metadata are descriptive terms about the sequence, and its specimen description that allow both to be digitally discoverable and interoperable. Here, we review a sampling of mitogenome metadata published in the journal Mitochondrial DNA between 2005 and 2014. Specifically, we have focused on a subset of metadata fields that are available for GenBank records, and specified by the Genomics Standards Consortium (GSC) and other biodiversity metadata standards; and we assessed their presence across three main categories: collection, biological and taxonomic information. To do this we reviewed 146 mitogenome manuscripts, and their associated GenBank records, and scored them for 13 metadata fields. We also explored the potential for mitogenome misidentification using their sequence diversity, and taxonomic metadata on the Barcode of Life Datasystems (BOLD). For this, we focused on all Lepidoptera and Perciformes mitogenomes included in the review, along with additional mitogenome sequence data mined from Genbank. Overall, we found that none of 146 mitogenome projects provided all the metadata we looked for; and only 17 projects provided at least one category of metadata across the three main categories. Comparisons using mtDNA sequences from BOLD, suggest that some mitogenomes may be misidentified. Lastly, we appreciate the research potential of mitogenomes announced through this journal; and we conclude with a suggestion of 13 metadata fields, available on GenBank, that if provided in a mitogenomes's GenBank record, would increase their research value. PMID:25693692

  8. Glyphosate-tolerant alfalfa is compositionally equivalent to conventional alfalfa (Medicago sativa L.).

    Science.gov (United States)

    McCann, Melinda C; Rogan, Glennon J; Fitzpatrick, Sharie; Trujillo, William A; Sorbet, Roy; Hartnell, Gary F; Riodan, Susan G; Nemeth, Margaret A

    2006-09-20

    Glyphosate-tolerant alfalfa (GTA) was developed to withstand over-the-top applications of glyphosate, the active ingredient in Roundup agricultural herbicides. As a part of the safety assessment, GTA (designated J101 x J163) was grown under controlled field conditions at geographically diverse locations within the United States during the 2001 and 2003 field seasons along with control and other conventional alfalfa varieties for compositional assessment. Field trials were conducted using a randomized complete block design with four replication blocks at each site. Alfalfa forage was harvested at the late bud to early bloom stage from each plot at five field sites in 2001 (establishment year) and from four field sites in 2003 (third year of stand). The concentration of proximate constituents, fibers, amino acids, coumestrol, and minerals in the forage was measured. The results showed that the forage from GTA J101 x J163 is compositionally equivalent to forage from the control and conventional alfalfa varieties.

  9. Integrated Array/Metadata Analytics

    Science.gov (United States)

    Misev, Dimitar; Baumann, Peter

    2015-04-01

    Data comes in various forms and types, and integration usually presents a problem that is often simply ignored and solved with ad-hoc solutions. Multidimensional arrays are an ubiquitous data type, that we find at the core of virtually all science and engineering domains, as sensor, model, image, statistics data. Naturally, arrays are richly described by and intertwined with additional metadata (alphanumeric relational data, XML, JSON, etc). Database systems, however, a fundamental building block of what we call "Big Data", lack adequate support for modelling and expressing these array data/metadata relationships. Array analytics is hence quite primitive or non-existent at all in modern relational DBMS. Recognizing this, we extended SQL with a new SQL/MDA part seamlessly integrating multidimensional array analytics into the standard database query language. We demonstrate the benefits of SQL/MDA with real-world examples executed in ASQLDB, an open-source mediator system based on HSQLDB and rasdaman, that already implements SQL/MDA.

  10. The research for standardization of coal geology metadata

    Energy Technology Data Exchange (ETDEWEB)

    Cao Dai-yong; Hao Wei [China University of Mining and Technology (Beijing), Beijing (China). State Key Laboratory of Coal Resources and Safe Exploitation

    2008-03-15

    Based on a detailed analysis of coal geology data and applied goal, the necessity and probability of establishing coal geology metadata were clarified. The metadata standard for geology information was used for reference. The function and content of the coal geology metadata standard were analyzed. The appropriate rule about metadata standard was chosen. The configuration figure of coal geology metadata was presented. Coal geology metadata was used in a coal quality database for China. 6 refs., 1 fig., 1 tab.

  11. A Metadata-Rich File System

    Energy Technology Data Exchange (ETDEWEB)

    Ames, S; Gokhale, M B; Maltzahn, C

    2009-01-07

    Despite continual improvements in the performance and reliability of large scale file systems, the management of file system metadata has changed little in the past decade. The mismatch between the size and complexity of large scale data stores and their ability to organize and query their metadata has led to a de facto standard in which raw data is stored in traditional file systems, while related, application-specific metadata is stored in relational databases. This separation of data and metadata requires considerable effort to maintain consistency and can result in complex, slow, and inflexible system operation. To address these problems, we have developed the Quasar File System (QFS), a metadata-rich file system in which files, metadata, and file relationships are all first class objects. In contrast to hierarchical file systems and relational databases, QFS defines a graph data model composed of files and their relationships. QFS includes Quasar, an XPATH-extended query language for searching the file system. Results from our QFS prototype show the effectiveness of this approach. Compared to the defacto standard, the QFS prototype shows superior ingest performance and comparable query performance on user metadata-intensive operations and superior performance on normal file metadata operations.

  12. Leveraging Metadata to Create Better Web Services

    Science.gov (United States)

    Mitchell, Erik

    2012-01-01

    Libraries have been increasingly concerned with data creation, management, and publication. This increase is partly driven by shifting metadata standards in libraries and partly by the growth of data and metadata repositories being managed by libraries. In order to manage these data sets, libraries are looking for new preservation and discovery…

  13. Metadata for Content-Based Image Retrieval

    Directory of Open Access Journals (Sweden)

    Adrian Sterca

    2010-12-01

    Full Text Available This paper presents an image retrieval technique that combines content based image retrieval with pre-computed metadata-based image retrieval. The resulting system will have the advantages of both approaches: the speed/efficiency of metadata-based image retrieval and the accuracy/power of content-based image retrieval.

  14. Metadata for Content-Based Image Retrieval

    OpenAIRE

    Adrian Sterca; Daniela Miron

    2010-01-01

    This paper presents an image retrieval technique that combines content based image retrieval with pre-computed metadata-based image retrieval. The resulting system will have the advantages of both approaches: the speed/efficiency of metadata-based image retrieval and the accuracy/power of content-based image retrieval.

  15. A Dynamic Metadata Community Profile for CUAHSI

    Science.gov (United States)

    Bermudez, L.; Piasecki, M.

    2004-12-01

    Common Metadata standards typically lack of domain specific elements, have limited extensibility and do not always resolve semantic heterogeneities that could occur in the annotations. To facilitate the use and extension of metadata specifications a methodology called Dynamic Community Profiles, DCP, is presented. The methodology allows to overwrite elements definitions and to specify core elements as metadata tree paths. DCP uses the Web Ontology Language (OWL), the Resource Description Framework (RDF) and XML syntax to formalize specifications and to create controlled vocabularies in ontologies, which enhances interoperability. This methodology was employed to create a metadata profile for the Consortium of Universities for the Advancement of Hydrologic Science Inc. (CUAHSI). The profile was created by extending ISO-19115:2003 geographic metadata standard and restricting the permissible values of some elements. The values used as controlled vocabularies were inferred from hydrologic keywords found in the Global Change Master Directory (GCMD) and from measurement units found in the Hydrologic Handbook. Also, a core metadata set for CUAHSI was formally expressed as tree paths, containing the ISO core set plus additional elements. Finally a tool was developed to test the extension and to allow creation of metadata instances in RDF/XML which conforms to the profile. Also this tool is able to export the core elements to other schema formats such as Metadata Template Files (MTF).

  16. Rapid phenotyping of alfalfa root system architecture

    Science.gov (United States)

    Root system architecture (RSA) influences the capacity of an alfalfa plant for symbiotic nitrogen fixation, nutrient uptake and water use efficiency, resistance to frost heaving, winterhardiness, and some pest and pathogen resistance. However, we currently lack a basic understanding of root system d...

  17. ECONOMIC ANALYSIS OF ALFALFA INTEGRATED MANAGEMENT PRACTICES

    OpenAIRE

    Ward, Clement E.; Dowdy, Alan K.; Berberet, Richard C.; Stritzke, Jimmie F.

    1990-01-01

    Integrated pest management (IMP) initially focused on insect pest control. More recently, IPM encompasses a broader concept of management, one which crosses several disciplinary boundaries. This article reports results of research dealing with four integrated management decisions for alfalfa (cultivar selection, inset control, weed control, and end-of-season harvest options.

  18. METADATA REGISTRY, ISO/IEC 11179

    Energy Technology Data Exchange (ETDEWEB)

    Pon, R K; Buttler, D J

    2008-01-03

    ISO/IEC-11179 is an international standard that documents the standardization and registration of metadata to make data understandable and shareable. This standardization and registration allows for easier locating, retrieving, and transmitting data from disparate databases. The standard defines the how metadata are conceptually modeled and how they are shared among parties, but does not define how data is physically represented as bits and bytes. The standard consists of six parts. Part 1 provides a high-level overview of the standard and defines the basic element of a metadata registry - a data element. Part 2 defines the procedures for registering classification schemes and classifying administered items in a metadata registry (MDR). Part 3 specifies the structure of an MDR. Part 4 specifies requirements and recommendations for constructing definitions for data and metadata. Part 5 defines how administered items are named and identified. Part 6 defines how administered items are registered and assigned an identifier.

  19. Metadata for Approximate Query Answering Systems

    Directory of Open Access Journals (Sweden)

    Francesco Di Tria

    2012-01-01

    Full Text Available In business intelligence systems, data warehouse metadata management and representation are getting more and more attention by vendors and designers. The standard language for the data warehouse metadata representation is the Common Warehouse Metamodel. However, business intelligence systems include also approximate query answering systems, since these software tools provide fast responses for decision making on the basis of approximate query processing. Currently, the standard meta-model does not allow to represent the metadata needed by approximate query answering systems. In this paper, we propose an extension of the standard metamodel, in order to define the metadata to be used in online approximate analytical processing. These metadata have been successfully adopted in ADAP, a web-based approximate query answering system that creates and uses statistical data profiles.

  20. Incorporating ISO Metadata Using HDF Product Designer

    Science.gov (United States)

    Jelenak, Aleksandar; Kozimor, John; Habermann, Ted

    2016-01-01

    The need to store in HDF5 files increasing amounts of metadata of various complexity is greatly overcoming the capabilities of the Earth science metadata conventions currently in use. Data producers until now did not have much choice but to come up with ad hoc solutions to this challenge. Such solutions, in turn, pose a wide range of issues for data managers, distributors, and, ultimately, data users. The HDF Group is experimenting on a novel approach of using ISO 19115 metadata objects as a catch-all container for all the metadata that cannot be fitted into the current Earth science data conventions. This presentation will showcase how the HDF Product Designer software can be utilized to help data producers include various ISO metadata objects in their products.

  1. Mapping Methods Metadata for Research Data

    Directory of Open Access Journals (Sweden)

    Tiffany Chao

    2015-02-01

    Full Text Available Understanding the methods and processes implemented by data producers to generate research data is essential for fostering data reuse. Yet, producing the metadata that describes these methods remains a time-intensive activity that data producers do not readily undertake. In particular, researchers in the long tail of science often lack the financial support or tools for metadata generation, thereby limiting future access and reuse of data produced. The present study investigates research journal publications as a potential source for identifying descriptive metadata about methods for research data. Initial results indicate that journal articles provide rich descriptive content that can be sufficiently mapped to existing metadata standards with methods-related elements, resulting in a mapping of the data production process for a study. This research has implications for enhancing the generation of robust metadata to support the curation of research data for new inquiry and innovation.

  2. Handling Metadata in a Neurophysiology Laboratory

    Science.gov (United States)

    Zehl, Lyuba; Jaillet, Florent; Stoewer, Adrian; Grewe, Jan; Sobolev, Andrey; Wachtler, Thomas; Brochier, Thomas G.; Riehle, Alexa; Denker, Michael; Grün, Sonja

    2016-01-01

    To date, non-reproducibility of neurophysiological research is a matter of intense discussion in the scientific community. A crucial component to enhance reproducibility is to comprehensively collect and store metadata, that is, all information about the experiment, the data, and the applied preprocessing steps on the data, such that they can be accessed and shared in a consistent and simple manner. However, the complexity of experiments, the highly specialized analysis workflows and a lack of knowledge on how to make use of supporting software tools often overburden researchers to perform such a detailed documentation. For this reason, the collected metadata are often incomplete, incomprehensible for outsiders or ambiguous. Based on our research experience in dealing with diverse datasets, we here provide conceptual and technical guidance to overcome the challenges associated with the collection, organization, and storage of metadata in a neurophysiology laboratory. Through the concrete example of managing the metadata of a complex experiment that yields multi-channel recordings from monkeys performing a behavioral motor task, we practically demonstrate the implementation of these approaches and solutions with the intention that they may be generalized to other projects. Moreover, we detail five use cases that demonstrate the resulting benefits of constructing a well-organized metadata collection when processing or analyzing the recorded data, in particular when these are shared between laboratories in a modern scientific collaboration. Finally, we suggest an adaptable workflow to accumulate, structure and store metadata from different sources using, by way of example, the odML metadata framework. PMID:27486397

  3. Handling Metadata in a Neurophysiology Laboratory.

    Science.gov (United States)

    Zehl, Lyuba; Jaillet, Florent; Stoewer, Adrian; Grewe, Jan; Sobolev, Andrey; Wachtler, Thomas; Brochier, Thomas G; Riehle, Alexa; Denker, Michael; Grün, Sonja

    2016-01-01

    To date, non-reproducibility of neurophysiological research is a matter of intense discussion in the scientific community. A crucial component to enhance reproducibility is to comprehensively collect and store metadata, that is, all information about the experiment, the data, and the applied preprocessing steps on the data, such that they can be accessed and shared in a consistent and simple manner. However, the complexity of experiments, the highly specialized analysis workflows and a lack of knowledge on how to make use of supporting software tools often overburden researchers to perform such a detailed documentation. For this reason, the collected metadata are often incomplete, incomprehensible for outsiders or ambiguous. Based on our research experience in dealing with diverse datasets, we here provide conceptual and technical guidance to overcome the challenges associated with the collection, organization, and storage of metadata in a neurophysiology laboratory. Through the concrete example of managing the metadata of a complex experiment that yields multi-channel recordings from monkeys performing a behavioral motor task, we practically demonstrate the implementation of these approaches and solutions with the intention that they may be generalized to other projects. Moreover, we detail five use cases that demonstrate the resulting benefits of constructing a well-organized metadata collection when processing or analyzing the recorded data, in particular when these are shared between laboratories in a modern scientific collaboration. Finally, we suggest an adaptable workflow to accumulate, structure and store metadata from different sources using, by way of example, the odML metadata framework. PMID:27486397

  4. Handbook of metadata, semantics and ontologies

    CERN Document Server

    Sicilia, Miguel-Angel

    2013-01-01

    Metadata research has emerged as a discipline cross-cutting many domains, focused on the provision of distributed descriptions (often called annotations) to Web resources or applications. Such associated descriptions are supposed to serve as a foundation for advanced services in many application areas, including search and location, personalization, federation of repositories and automated delivery of information. Indeed, the Semantic Web is in itself a concrete technological framework for ontology-based metadata. For example, Web-based social networking requires metadata describing people and

  5. Health status of alfalfa leafcutting bee larvae (Hymenoptera: Megachilidae) in United States alfalfa seed fields.

    Science.gov (United States)

    James, R R; Pitts-Singer, T L

    2013-12-01

    We conducted a broad geographic survey in the northwestern United States to quantify production losses in the alfalfa leafcutting bee (Megachile rotundata (F.), Hymenoptera: Megachilidae), a solitary pollinator used extensively in alfalfa seed production. Viable larvae were found in only 47.1% of the nest cells collected at the end of the season. Most of the rest of the cells contained pollen balls (typified by a provision but no larva; 16.7%), unknown causes of mortality (15.5%), or larvae killed by chalkbrood (8.0%). Prevalence of pollen balls was correlated positively with bee release rates and negatively with alfalfa stand age. The unknown mortality was correlated with the U.S. Department of Agriculture-Plant Hardiness Zone, and thus, some of the mortality may be caused by high temperature extremes, although the nesting season degree-days were not correlated with this mortality. Chalkbrood prevalence was correlated with possible nesting-resource or crowding-related factors, such as the number of bees released per hectare and the number of shelters used, but not with nesting board disinfection practices. Vapona is used to control parasitoids when the parent bees are incubated before release, and use of this fumigant was associated with an increase in both chalkbrood and diapausing offspring, although any reason for these correlations are unknown. This survey quantifies the variation in the quality of alfalfa leafcutting bee cocoons produced across much of the U.S. alfalfa seed production area. PMID:24128927

  6. Metadata in Chaos: how researchers tag radio broadcasts

    DEFF Research Database (Denmark)

    Lykke, Marianne; Lund, Haakon; Skov, Mette

    2015-01-01

    . To optimally support the researchers a user-centred approach was taken to develop the platform and related metadata scheme. Based on the requirements a three level metadata scheme was developed: (1) core archival metadata, (2) LARM metadata, and (3) project-specific metadata. The paper analyses how researchers...... apply the metadata scheme in their research work. The study consists of two studies, a) a qualitative study of subjects and vocabulary of the applied metadata and annotations, and 5 semi-structured interviews about goals for tagging. The findings clearly show that the primary role of LARM...

  7. Productive Efficiency of Subsidized Organic Alfalfa Farms

    OpenAIRE

    Stefanos A. Nastis; Papanagiotou, Evangelos; Zamanidis, Savvas

    2012-01-01

    This paper assesses the efficiency and performance of organic alfalfa farms. Data were obtained from questionnaires collected from forty farms participating in an EU-subsidized program promoting the switch to organic farming. Results obtained using the bootstrap Data Envelopment Analysis methodology show that larger farms had lower yields and lower efficiency scores and more experienced farmers had higher efficiency scores. A Tobit analysis of the impact of environmental factors and subsidies...

  8. Extraction of Chlorophyll from Alfalfa Plant

    OpenAIRE

    Ali Khalid Khudair Al-Jomaily; Ahmed Jawad; Isam Kamal

    2006-01-01

    The extraction process of chlorophyll from dehydrated and pulverized alfalfa plant were studied by percolation method. Two solvent systems were used for the extraction namely; Ethanol-water and Hexane-Toluene systems . The effect of circulation rate, solvent concentration, and solvent volume to solid weight ratio were studied. In both ethanol water, and Hexane-Toluene systems it appears that solvent concentration is the most effective variable.

  9. Stress responses in alfalfa (Medicago sativa L. )

    Energy Technology Data Exchange (ETDEWEB)

    Kessmann, H.; Edwards, R.; Dixon, R.A. (Samuel Roberts Noble Foundation, Ardmore, OK (USA)); Geno, P.W. (Oklahoma State Univ., Stillwater (USA))

    1990-09-01

    The isoflavonoid conjugates medicarpin-3-O-glucoside-6{double prime}-O-malonate (MGM), afrormosin-7-O-glucoside (AG), and afrormosin-7-O-glucoside-6{double prime}-O-malonate (AGM) were isolated and characterized from cell suspension cultures of alfalfa (Medicago sativa L.), where they were the major constitutive secondary metabolites. They were also found in alfalfa roots but not in other parts of the plant. The phytoalexin medicarpin accumulated rapidly in suspension cultured cells treated with elicitor from Colletotrichum lindemuthianum, and this was subsequently accompanied by an increase in the levels of MGM. In contrast, net accumulation of afrormosin conjugates was not affected by elicitor treatment. Labeling studies with ({sup 14}C)phenylalanine indicated that afrormosin conjugates were the major de novo synthesized isoflavonoid products in unelicited cells. During elicitation, ({sup 14}C)phenylalanine was incorporated predominantly into medicarpin, although a significant proportion of the newly synthesized medicarpin was also conjugated. Treatment of {sup 14}C-labeled, elicited cells with L-{alpha}-aminooxy-{beta}-phenylpropionic acid, a potent inhibitor of PAL activity in vivo, resulted in the initial appearance of labeled medicarpin of very low specific activity, suggesting that the phytoalexin could be released from a preformed conjugate under these conditions. Our data draw attention to the involvement of isoflavone hydroxylases during the constitutive and elicitor-induced accumulation of isoflavonoids and their conjugates in alfalfa cell cultures.

  10. Stress responses in alfalfa (Medicago sativa L.)

    International Nuclear Information System (INIS)

    The isoflavonoid conjugates medicarpin-3-O-glucoside-6 double-prime-O-malonate (MGM), afrormosin-7-O-glucoside (AG), and afrormosin-7-O-glucoside-6 double-prime-O-malonate (AGM) were isolated and characterized from cell suspension cultures of alfalfa (Medicago sativa L.), where they were the major constitutive secondary metabolites. They were also found in alfalfa roots but not in other parts of the plant. The phytoalexin medicarpin accumulated rapidly in suspension cultured cells treated with elicitor from Colletotrichum lindemuthianum, and this was subsequently accompanied by an increase in the levels of MGM. In contrast, net accumulation of afrormosin conjugates was not affected by elicitor treatment. Labeling studies with [14C]phenylalanine indicated that afrormosin conjugates were the major de novo synthesized isoflavonoid products in unelicited cells. During elicitation, [14C]phenylalanine was incorporated predominantly into medicarpin, although a significant proportion of the newly synthesized medicarpin was also conjugated. Treatment of 14C-labeled, elicited cells with L-α-aminooxy-β-phenylpropionic acid, a potent inhibitor of PAL activity in vivo, resulted in the initial appearance of labeled medicarpin of very low specific activity, suggesting that the phytoalexin could be released from a preformed conjugate under these conditions. Our data draw attention to the involvement of isoflavone hydroxylases during the constitutive and elicitor-induced accumulation of isoflavonoids and their conjugates in alfalfa cell cultures

  11. FSA 2003-2004 Digital Orthophoto Metadata

    Data.gov (United States)

    Minnesota Department of Natural Resources — Metadata for the 2003-2004 FSA Color Orthophotos Layer. Each orthophoto is represented by a Quarter 24k Quad tile polygon. The polygon attributes contain the...

  12. USGS Digital Orthophoto Quad (DOQ) Metadata

    Data.gov (United States)

    Minnesota Department of Natural Resources — Metadata for the USGS DOQ Orthophoto Layer. Each orthophoto is represented by a Quarter 24k Quad tile polygon. The polygon attributes contain the quarter-quad tile...

  13. Implementing Metadata that Guides Digital Preservation Services

    OpenAIRE

    Dappert, Angela; Farquhar, Adam

    2009-01-01

    Effective digital preservation depends on a set of preservation services that work together to ensure that digital objects can be preserved for the long-term. These services need digital preservation metadata, in particular, descriptions of the properties that digital objects may have and descriptions of the requirements that guide digital preservation services. This paper analyzes how these services interact and use this metadata and develops a data dictionary to support them.

  14. Effective Metadata Management in Federated Sensor Networks

    OpenAIRE

    Jeung H.; Sarni S.; Paparrizos I.; Sathe S; Aberer K. (ed.); Dawes N.; Papaioannou T.G.; Lehning M.

    2010-01-01

    As the Sensor Internet starts to become reality, increasingly heterogeneous sensor networks are becoming interconnected into federated sensor networks and provide huge volumes of sensor data for a variety of applications to large user communities, such as in science and engineering. Effective metadata management plays a crucial role in processing and properly interpreting raw sensor measurement data, and needs to be performed in a collaborative fashion. Previous work on metadata management fo...

  15. Implementing Metadata that Guide Digital Preservation Services

    Directory of Open Access Journals (Sweden)

    Angela Dappert

    2011-03-01

    Full Text Available Effective digital preservation depends on a set of preservation services that work together to ensure that digital objects can be preserved for the long-term. These services need digital preservation metadata, in particular, descriptions of the properties that digital objects may have and descriptions of the requirements that guide digital preservation services. This paper analyzes how these services interact and use these metadata and develops a data dictionary to support them.

  16. Exposing Provenance Metadata Using Different RDF Models

    OpenAIRE

    Fu, Gang; Bolton, Evan; Rosinach, Núria Queralt; Laura I Furlong; Nguyen, Vinh; Sheth, Amit; Bodenreider, Olivier; Dumontier, Michel

    2015-01-01

    A standard model for exposing structured provenance metadata of scientific assertions on the Semantic Web would increase interoperability, discoverability, reliability, as well as reproducibility for scientific discourse and evidence-based knowledge discovery. Several Resource Description Framework (RDF) models have been proposed to track provenance. However, provenance metadata may not only be verbose, but also significantly redundant. Therefore, an appropriate RDF provenance model should be...

  17. What Metadata Principles Apply to Scientific Data?

    Science.gov (United States)

    Mayernik, M. S.

    2014-12-01

    Information researchers and professionals based in the library and information science fields often approach their work through developing and applying defined sets of principles. For example, for over 100 years, the evolution of library cataloging practice has largely been driven by debates (which are still ongoing) about the fundamental principles of cataloging and how those principles should manifest in rules for cataloging. Similarly, the development of archival research and practices over the past century has proceeded hand-in-hand with the emergence of principles of archival arrangement and description, such as maintaining the original order of records and documenting provenance. This project examines principles related to the creation of metadata for scientific data. The presentation will outline: 1) how understandings and implementations of metadata can range broadly depending on the institutional context, and 2) how metadata principles developed by the library and information science community might apply to metadata developments for scientific data. The development and formalization of such principles would contribute to the development of metadata practices and standards in a wide range of institutions, including data repositories, libraries, and research centers. Shared metadata principles would potentially be useful in streamlining data discovery and integration, and would also benefit the growing efforts to formalize data curation education.

  18. Metadata Management in Scientific Computing

    CERN Document Server

    Seidel, Eric L

    2012-01-01

    Complex scientific codes and the datasets they generate are in need of a sophisticated categorization environment that allows the community to store, search, and enhance metadata in an open, dynamic system. Currently, data is often presented in a read-only format, distilled and curated by a select group of researchers. We envision a more open and dynamic system, where authors can publish their data in a writeable format, allowing users to annotate the datasets with their own comments and data. This would enable the scientific community to collaborate on a higher level than before, where researchers could for example annotate a published dataset with their citations. Such a system would require a complete set of permissions to ensure that any individual's data cannot be altered by others unless they specifically allow it. For this reason datasets and codes are generally presented read-only, to protect the author's data; however, this also prevents the type of social revolutions that the private sector has seen...

  19. Exposing and harvesting metadata using the OAI metadata harvesting protocol: A tutorial

    CERN Document Server

    Warner, Simeon

    2001-01-01

    In this article I outline the ideas behind the Open Archives Initiative metadata harvesting protocol (OAIMH), and attempt to clarify some common misconceptions. I then consider how the OAIMH protocol can be used to expose and harvest metadata. Perl code examples are given as practical illustration.

  20. Exposing and Harvesting Metadata Using the OAI Metadata Harvesting Protocol A Tutorial

    CERN Document Server

    Warner, Simeon

    2001-01-01

    In this article I outline the ideas behind the Open Archives Initiative metadata harvesting protocol (OAIMH), and attempt to clarify some common misconceptions. I then consider how the OAIMH protocol can be used to expose and harvest metadata. Perl code examples are given as practical illustration.

  1. Mapping metadata for SWHi : Aligning schemas with library metadata for a historical ontology

    NARCIS (Netherlands)

    Zhang, Junte; Fahmi, Ismail; Ellermann, Henk; Bouma, Gosse; Weske, M; Hacid, MS; Godart, C

    2007-01-01

    What are the possibilities of Semantic Web technologies for organizations which traditionally have lots of structured data, such as metadata, available? A library is such a particular organization. We mapped a digital library's descriptive (bibliographic) metadata for a large historical document col

  2. Environmental stability of stem cell wall traits in alfalfa

    Science.gov (United States)

    The concentration of stem cell wall constituents in alfalfa, Medicago sativa L., herbage can affect dry matter intake and energy availability in dairy and beef production systems and impact energy conversion efficiency when alfalfa is used to produce biofuels. Stem Klason lignin, glucose, xylose, an...

  3. Elimination of toxicity from diets containing alfalfa seeds.

    Science.gov (United States)

    Malinow, M R; McLaughlin, P; Bardana, E J; Craig, S

    1984-07-01

    Cynomolgus macaques were fed autoclaved alfalfa seeds for up to 1 yr. There were no humoral signs of a syndrome resembling systemic lupus erythematosus. The data are in contrast to those previously reported in monkeys fed raw alfalfa seeds, in which a systemic lupus erythematosus-like syndrome was induced in a shorter interval. The autoclaved seeds retained antihypercholesterolaemic effects. PMID:6540232

  4. Streamlining geospatial metadata in the Semantic Web

    Science.gov (United States)

    Fugazza, Cristiano; Pepe, Monica; Oggioni, Alessandro; Tagliolato, Paolo; Carrara, Paola

    2016-04-01

    In the geospatial realm, data annotation and discovery rely on a number of ad-hoc formats and protocols. These have been created to enable domain-specific use cases generalized search is not feasible for. Metadata are at the heart of the discovery process and nevertheless they are often neglected or encoded in formats that either are not aimed at efficient retrieval of resources or are plainly outdated. Particularly, the quantum leap represented by the Linked Open Data (LOD) movement did not induce so far a consistent, interlinked baseline in the geospatial domain. In a nutshell, datasets, scientific literature related to them, and ultimately the researchers behind these products are only loosely connected; the corresponding metadata intelligible only to humans, duplicated on different systems, seldom consistently. Instead, our workflow for metadata management envisages i) editing via customizable web- based forms, ii) encoding of records in any XML application profile, iii) translation into RDF (involving the semantic lift of metadata records), and finally iv) storage of the metadata as RDF and back-translation into the original XML format with added semantics-aware features. Phase iii) hinges on relating resource metadata to RDF data structures that represent keywords from code lists and controlled vocabularies, toponyms, researchers, institutes, and virtually any description one can retrieve (or directly publish) in the LOD Cloud. In the context of a distributed Spatial Data Infrastructure (SDI) built on free and open-source software, we detail phases iii) and iv) of our workflow for the semantics-aware management of geospatial metadata.

  5. Alfalfa leafcutting bee population dynamics, flower availability, and pollination rates in two Oregon alfalfa fields.

    Science.gov (United States)

    Bosch, Jordi; Kemp, William P

    2005-08-01

    Since the 1970s, it has become increasingly difficult for U.S. alfalfa seed producers to maintain Megachile rotundata (F.) populations used for alfalfa, Medicago sativa L., pollination. In 1998, we monitored M. rotundata population dynamics and foraging behavior, as well as alfalfa bloom and pollination rates in two fields in eastern Oregon. Despite marked differences in bee management, establishment was very similar in the two fields (approximately 0.5 females per nesting cavity) and lagged peak bloom by approximately 2 wk. Pollination rates increased from 0-10% in the first 3 wk to 80-90% in week 4-5. By then, M. rotundata females had difficulty finding untripped (nonpollinated) flowers and visited large numbers of already tripped or not fully matured flowers. M. rotundata progeny mortality was very high (54-78%). Estimated seed yields were similar in both fields. We contend similar seed yields, and improved bee production, could be accomplished with smaller bee populations, better timed with alfalfa bloom. PMID:16156556

  6. Alfalfa (Medicago Sativa L As A Promising Forage In Indonesia

    Directory of Open Access Journals (Sweden)

    Sajimin

    2011-06-01

    Full Text Available Alfalfa (Medicago sativa L or Lucerne is a perennial herbaceous legume with superior forage quality. It is the most important forage crop in the world and it was the first domesticated forage crop. Alfalfa is able to fix nitrogen from the air through a symbiotic relationship with Rhizobium bacteria with N production 7.85 – 10.37 g/m2. Its rooting system can reach 4.5 m that allows it to escape drought. Forage production can reach 15.48 tons of dry matter per ha/year and containing 18.0 – 29.1 % crude protein. Plants can live 3 to 12 years depending on climatic conditions and crop varieties. However, alfalfa is not a tropical plant, thus it has not been widely cultivated in Indonesia. The problem of alfalfa cultivation are high pest attacks and competition with weeds. Therefore, alfalfa cultivation requires attention and good management to obtain optimum yield.

  7. Metadata and Ontologies in Learning Resources Design

    Science.gov (United States)

    Vidal C., Christian; Segura Navarrete, Alejandra; Menéndez D., Víctor; Zapata Gonzalez, Alfredo; Prieto M., Manuel

    Resource design and development requires knowledge about educational goals, instructional context and information about learner's characteristics among other. An important information source about this knowledge are metadata. However, metadata by themselves do not foresee all necessary information related to resource design. Here we argue the need to use different data and knowledge models to improve understanding the complex processes related to e-learning resources and their management. This paper presents the use of semantic web technologies, as ontologies, supporting the search and selection of resources used in design. Classification is done, based on instructional criteria derived from a knowledge acquisition process, using information provided by IEEE-LOM metadata standard. The knowledge obtained is represented in an ontology using OWL and SWRL. In this work we give evidence of the implementation of a Learning Object Classifier based on ontology. We demonstrate that the use of ontologies can support the design activities in e-learning.

  8. Building a Disciplinary Metadata Standards Directory

    Directory of Open Access Journals (Sweden)

    Alexander Ball

    2014-07-01

    Full Text Available The Research Data Alliance (RDA Metadata Standards Directory Working Group (MSDWG is building a directory of descriptive, discipline-specific metadata standards. The purpose of the directory is to promote the discovery, access and use of such standards, thereby improving the state of research data interoperability and reducing duplicative standards development work.This work builds upon the UK Digital Curation Centre's Disciplinary Metadata Catalogue, a resource created with much the same aim in mind. The first stage of the MSDWG's work was to update and extend the information contained in the catalogue. In the current, second stage, a new platform is being developed in order to extend the functionality of the directory beyond that of the catalogue, and to make it easier to maintain and sustain. Future work will include making the directory more amenable to use by automated tools.

  9. U.S. EPAs Public Geospatial Metadata Service

    Data.gov (United States)

    U.S. Environmental Protection Agency — EPAs public geospatial metadata service provides external parties (Data.gov, GeoPlatform.gov, and the general public) with access to EPA's geospatial metadata...

  10. Clustering of HI galaxies in HIPASS and ALFALFA

    CERN Document Server

    Passmoor, S S; Faltenbacher, A

    2011-01-01

    We investigate the clustering of HI-selected galaxies in the ALFALFA survey and compare results with those obtained for HIPASS. Measurements of the angular correlation function and the inferred 3D-clustering are compared with results from direct spatial-correlation measurements. We are able to measure clustering on smaller angular scales and for galaxies with lower HI masses than was previously possible. We calculate the expected clustering of dark matter using the redshift distributions of HIPASS and ALFALFA and show that the ALFALFA sample is somewhat more anti-biased with respect to dark matter than the HIPASS sample.

  11. Multimedia Learning Systems Based on IEEE Learning Object Metadata (LOM).

    Science.gov (United States)

    Holzinger, Andreas; Kleinberger, Thomas; Muller, Paul

    One of the "hottest" topics in recent information systems and computer science is metadata. Learning Object Metadata (LOM) appears to be a very powerful mechanism for representing metadata, because of the great variety of LOM Objects. This is on of the reasons why the LOM standard is repeatedly cited in projects in the field of eLearning Systems.…

  12. A quick scan on possibilities for automatic metadata generation

    NARCIS (Netherlands)

    Benneker, Frank

    2006-01-01

    The Quick Scan is a report on research into useable solutions for automatic generation of metadata or parts of metadata. The aim of this study is to explore possibilities for facilitating the process of attaching metadata to learning objects. This document is aimed at developers of digital learning

  13. Handling multiple metadata streams regarding digital learning material

    NARCIS (Netherlands)

    Roes, J.B.M.; Vuuren, J. van; Verbeij, N.; Nijstad, H.

    2010-01-01

    This paper presents the outcome of a study performed in the Netherlands on handling multiple metadata streams regarding digital learning material. The paper describes the present metadata architecture in the Netherlands, the present suppliers and users of metadata and digital learning materials. It

  14. Metadata Management and Semantics in Microarray Repositories

    Science.gov (United States)

    Kocabaş, F; Can, T; Baykal, N

    2011-01-01

    The number of microarray and other high-throughput experiments on primary repositories keeps increasing as do the size and complexity of the results in response to biomedical investigations. Initiatives have been started on standardization of content, object model, exchange format and ontology. However, there are backlogs and inability to exchange data between microarray repositories, which indicate that there is a great need for a standard format and data management. We have introduced a metadata framework that includes a metadata card and semantic nets that make experimental results visible, understandable and usable. These are encoded in syntax encoding schemes and represented in RDF (Resource Description Frame-word), can be integrated with other metadata cards and semantic nets, and can be exchanged, shared and queried. We demonstrated the performance and potential benefits through a case study on a selected microarray repository. We concluded that the backlogs can be reduced and that exchange of information and asking of knowledge discovery questions can become possible with the use of this metadata framework. PMID:24052712

  15. A Highly Available Grid Metadata Catalog

    DEFF Research Database (Denmark)

    Jensen, Henrik Thostrup; Kleist, Joshva

    2009-01-01

    This article presents a metadata catalog, intended foruse in grids. The catalog provides high availability, by replication across several hosts. The replicas are kept consistent using a replication protocol based on the Paxos algorithm. A majority of the replicas must be available in order...

  16. Metadata for Corpora PATCOR and Domotica-2

    OpenAIRE

    Tessema, Netsanet Merawi; Ons, Bart; van de Loo, Janneke; Gemmeke, Jort; De Pauw, Guy; DAELEMANS, Walter; Hamme, Hugo Van

    2013-01-01

    Tessema N., Ons B., van de Loo J., Gemmeke J.F., De Pauw G., Daelemans W., Van hamme H., ''Metadata for Corpora PATCOR and Domotica-2'', Technical report KUL/ESAT/PSI/1303, KU Leuven, ESAT, July 2013, Leuven, Belgium.

  17. Biological and Molecular Variability of Alfalfa mosaic virus Affecting Alfalfa Crop in Riyadh Region.

    Science.gov (United States)

    Al-Saleh, Mohammed A; Amer, Mahmoud A

    2013-12-01

    In 2011-2012, sixty nine samples were collected from alfalfa plants showing viral infection symptoms in Riyadh region. Mechanical inoculation with sap prepared from two collected samples out of twenty five possitive for Alfalfa mosaic virus (AMV) by ELISA were produced systemic mosaic on Vigna unguiculata and Nicotiana tabacum, local lesion on Chenopodium amaranticolor and C. quinoa. Vicia faba indicator plants that induce mosaic and mottle with AMV-Sagir isolate and no infection with AMV-Wadi aldawasser isolate. Approximately 700-bp was formed by RT-PCR using AMV coat protein specific primer. Samples from infected alfalfa gave positive results, while healthy plant gave negative result using dot blot hybridization assay. The nucleotide sequences of the Saudi isolates were compared with corresponding viral nucleotide sequences reported in GenBank. The obtained results showed that the AMV from Australia, Brazil, Puglia and China had the highest similarity with AMV-Sajer isolate. While, the AMV from Spain and New Zealaland had the lowest similarity with AMV-Sajer and Wadi aldawasser isolates. The data obtained in this study has been deposited in the GenBank under the accession numbers KC434083 and KC434084 for AMV-Sajer and AMV- Wadialdawasser respectively. This is the first report regarding the gnetic make up of AMV in Saudi Arabia. PMID:25288969

  18. Biological and Molecular Variability of Alfalfa mosaic virus Affecting Alfalfa Crop in Riyadh Region

    Directory of Open Access Journals (Sweden)

    Mohammed A. AL-Saleh

    2013-12-01

    Full Text Available In 2011–2012, sixty nine samples were collected from alfalfa plants showing viral infection symptoms in Riyadh region. Mechanical inoculation with sap prepared from two collected samples out of twenty five possitive for Alfalfa mosaic virus (AMV by ELISA were produced systemic mosaic on Vigna unguiculata and Nicotiana tabacum, local lesion on Chenopodium amaranticolor and C. quinoa. Vicia faba indicator plants that induce mosaic and mottle with AMV-Sagir isolate and no infection with AMV-Wadi aldawasser isolate. Approximately 700-bp was formed by RT-PCR using AMV coat protein specific primer. Samples from infected alfalfa gave positive results, while healthy plant gave negative result using dot blot hybridization assay. The nucleotide sequences of the Saudi isolates were compared with corresponding viral nucleotide sequences reported in GenBank. The obtained results showed that the AMV from Australia, Brazil, Puglia and China had the highest similarity with AMV-Sajer isolate. While, the AMV from Spain and New Zealaland had the lowest similarity with AMV-Sajer and Wadi aldawasser isolates. The data obtained in this study has been deposited in the GenBank under the accession numbers KC434083 and KC434084 for AMV-Sajer and AMV- Wadialdawasser respectively. This is the first report regarding the gnetic make up of AMV in Saudi Arabia.

  19. Metadata Effectiveness in Internet Discovery: An Analysis of Digital Collection Metadata Elements and Internet Search Engine Keywords

    Science.gov (United States)

    Yang, Le

    2016-01-01

    This study analyzed digital item metadata and keywords from Internet search engines to learn what metadata elements actually facilitate discovery of digital collections through Internet keyword searching and how significantly each metadata element affects the discovery of items in a digital repository. The study found that keywords from Internet…

  20. Growth and Production Characteristics of Different Alfalfa Varieties in Jiamusi

    Institute of Scientific and Technical Information of China (English)

    Shen; Xiaohui; Feng; Peng; Jiang; Cheng; Li; Rulai; Zheng; Haiyan; Li; Zengjie; Wang; Qiang

    2014-01-01

    [Objective]The growth and production characteristics of different alfalfa varieties in Jiamusi were explored in the paper,in order to better study their cold resistance in northern regions. [Method]The yield traits in different growth periods were measured using randomized block design method. [Results] The plant height of Longmu 803 was the highest of 66. 80 cm on the seeding year; the numbers of plants and branches per unit length of Longmu 808 were the highest of 94 plants and 184 branches,respectively,and its yield was the highest. The overwintering rate of each variety in the region was 100%. The yield of first mowing successively were Longmu 808 > Longmu 80 > Xunlu alfalfa > Aohan alfalfa > Zhaodong alfalfa > Longmu 807; the yield and 1 000-grain weight of Longmu803 were the highest,which were 20. 24 and 0. 09 g higher than control Zhaodong alfalfa,respectively. [Conclusion]The test alfalfa varieties have higher cold resistance in Jiamusi. Longmu 803 and Longmu 808 have both high grass production performance and excellent production performance.

  1. PIMMS tools for capturing metadata about simulations

    Science.gov (United States)

    Pascoe, Charlotte; Devine, Gerard; Tourte, Gregory; Pascoe, Stephen; Lawrence, Bryan; Barjat, Hannah

    2013-04-01

    PIMMS (Portable Infrastructure for the Metafor Metadata System) provides a method for consistent and comprehensive documentation of modelling activities that enables the sharing of simulation data and model configuration information. The aim of PIMMS is to package the metadata infrastructure developed by Metafor for CMIP5 so that it can be used by climate modelling groups in UK Universities. PIMMS tools capture information about simulations from the design of experiments to the implementation of experiments via simulations that run models. PIMMS uses the Metafor methodology which consists of a Common Information Model (CIM), Controlled Vocabularies (CV) and software tools. PIMMS software tools provide for the creation and consumption of CIM content via a web services infrastructure and portal developed by the ES-DOC community. PIMMS metadata integrates with the ESGF data infrastructure via the mapping of vocabularies onto ESGF facets. There are three paradigms of PIMMS metadata collection: Model Intercomparision Projects (MIPs) where a standard set of questions is asked of all models which perform standard sets of experiments. Disciplinary level metadata collection where a standard set of questions is asked of all models but experiments are specified by users. Bespoke metadata creation where the users define questions about both models and experiments. Examples will be shown of how PIMMS has been configured to suit each of these three paradigms. In each case PIMMS allows users to provide additional metadata beyond that which is asked for in an initial deployment. The primary target for PIMMS is the UK climate modelling community where it is common practice to reuse model configurations from other researchers. This culture of collaboration exists in part because climate models are very complex with many variables that can be modified. Therefore it has become common practice to begin a series of experiments by using another climate model configuration as a starting

  2. Metadata Analysis at the Command-Line

    Directory of Open Access Journals (Sweden)

    Mark Phillips

    2013-01-01

    Full Text Available Over the past few years the University of North Texas Libraries' Digital Projects Unit (DPU has developed a set of metadata analysis tools, processes, and methodologies aimed at helping to focus limited quality control resources on the areas of the collection where they might have the most benefit. The key to this work lies in its simplicity: records harvested from OAI-PMH-enabled digital repositories are transformed into a format that makes them easily parsable using traditional Unix/Linux-based command-line tools. This article describes the overall methodology, introduces two simple open-source tools developed to help with the aforementioned harvesting and breaking, and provides example commands to demonstrate some common metadata analysis requests. All software tools described in the article are available with an open-source license via the author's GitHub account.

  3. Testing Metadata Existence of Web Map Services

    Directory of Open Access Journals (Sweden)

    Jan Růžička

    2011-05-01

    Full Text Available For a general user is quite common to use data sources available on WWW. Almost all GIS software allow to use data sources available via Web Map Service (ISO/OGC standard interface. The opportunity to use different sources and combine them brings a lot of problems that were discussed many times on conferences or journal papers. One of the problem is based on non existence of metadata for published sources. The question was: were the discussions effective? The article is partly based on comparison of situation for metadata between years 2007 and 2010. Second part of the article is focused only on 2010 year situation. The paper is created in a context of research of intelligent map systems, that can be used for an automatic or a semi-automatic map creation or a map evaluation.

  4. Thermoperiodism Synchronizes Emergence in the Alfalfa Leafcutting Bee (Hymenoptera: Megachilidae).

    Science.gov (United States)

    Yocum, George D; Rinehart, Joseph P; Yocum, Ian S; Kemp, William P; Greenlee, Kendra J

    2016-02-01

    Alfalfa seed production in the northwestern United States and western Canada is heavily dependent upon the pollinating services of Megachile rotundata (F.) (Hymenoptera: Megachilidae). M. rotundata females nest in cavities either naturally occurring or in artificial nesting blocks. Because of the physical nature of the nest, M. rotundata brood may have limited to no exposure to photoperiodic cues in order to regulate important circadian functions. Therefore, various thermoperiod regimes were used to characterize the possible role of thermoperiodism in synchronizing M. rotundata adult emergence. Adult emergence was monitored using a microprocessor-controlled event logger. Incubating bees under constant 29°C and darkness resulted in an arhythmic adult emergence pattern. Exposing developing M. rotundata to a thermoperiod synchronized emergence to the beginning of the thermophase and decreased the total number of days required for all adults to emerge. The amplitude of the thermoperiod regulated the timing of peak emergence in relationship to the increase in temperature. A thermoperiod amplitude of only 2°C was sufficient to synchronize peak adult emergence to take place during the rise in temperature. Increasing the amplitude of the thermoperiod to 4 or 8°C caused a positively correlated shift in peak emergence to later in the thermophase. Brood stored under constant 29°C and darkness for different durations (May or June early in the growing season or July or August late in the growing season) or under a fluctuating thermal regime (base temperature of 6°C and daily 1-h pulse of 20°C until September or November) maintained their capacity for entraining emergence timing by thermoperiodism. PMID:26385932

  5. HIS Central and the Hydrologic Metadata Catalog

    Science.gov (United States)

    Whitenack, T.; Zaslavsky, I.; Valentine, D. W.

    2008-12-01

    The CUAHSI Hydrologic Information System project maintains a comprehensive workflow for publishing hydrologic observations data and registering them to the common Hydrologic Metadata Catalog. Once the data are loaded into a database instance conformant with the CUAHSI HIS Observations Data Model (ODM), the user configures ODM web service template to point to the new database. After this, the hydrologic data become available via the standard CUAHSI HIS web service interface, that includes both data discovery (GetSites, GetVariables, GetSiteInfo, GetVariableInfo) and data retrieval (GetValues) methods. The observations data then can be further exposed via the global semantics-based search engine called Hydroseek. To register the published observations networks to the global search engine, users can now use the HIS Central application (new in HIS 1.1). With this online application, the WaterML-compliant web services can be submitted to the online catalog of data services, along with network metadata and a desired network symbology. Registering services to the HIS Central application triggers a harvester which uses the services to retrieve additional network metadata from the underlying ODM (information about stations, variables, and periods of record). The next step in HIS Central application is mapping variable names from the newly registered network, to the terms used in the global search ontology. Once these steps are completed, the new observations network is added to the map and becomes available for searching and querying. The number of observations network registered to the Hydrologic Metadata Catalog at SDSC is constantly growing. At the time of submission, the catalog contains 51 registered networks, with estimated 1.7 million stations.

  6. Ontology-Based Search of Genomic Metadata.

    Science.gov (United States)

    Fernandez, Javier D; Lenzerini, Maurizio; Masseroli, Marco; Venco, Francesco; Ceri, Stefano

    2016-01-01

    The Encyclopedia of DNA Elements (ENCODE) is a huge and still expanding public repository of more than 4,000 experiments and 25,000 data files, assembled by a large international consortium since 2007; unknown biological knowledge can be extracted from these huge and largely unexplored data, leading to data-driven genomic, transcriptomic, and epigenomic discoveries. Yet, search of relevant datasets for knowledge discovery is limitedly supported: metadata describing ENCODE datasets are quite simple and incomplete, and not described by a coherent underlying ontology. Here, we show how to overcome this limitation, by adopting an ENCODE metadata searching approach which uses high-quality ontological knowledge and state-of-the-art indexing technologies. Specifically, we developed S.O.S. GeM (http://www.bioinformatics.deib.polimi.it/SOSGeM/), a system supporting effective semantic search and retrieval of ENCODE datasets. First, we constructed a Semantic Knowledge Base by starting with concepts extracted from ENCODE metadata, matched to and expanded on biomedical ontologies integrated in the well-established Unified Medical Language System. We prove that this inference method is sound and complete. Then, we leveraged the Semantic Knowledge Base to semantically search ENCODE data from arbitrary biologists' queries. This allows correctly finding more datasets than those extracted by a purely syntactic search, as supported by the other available systems. We empirically show the relevance of found datasets to the biologists' queries. PMID:26529777

  7. Mdmap: A Tool for Metadata Collection and Matching

    Directory of Open Access Journals (Sweden)

    Rico Simke

    2014-10-01

    Full Text Available This paper describes a front-end for the semi-automatic collection, matching, and generation of bibliographic metadata obtained from different sources for use within a digitization architecture. The Library of a Billion Words project is building an infrastructure for digitizing text that requires high-quality bibliographic metadata, but currently only sparse metadata from digitized editions is available. The project’s approach is to collect metadata for each digitized item from as many sources as possible. An expert user can then use an intuitive front-end tool to choose matching metadata. The collected metadata are centrally displayed in an interactive grid view. The user can choose which metadata they want to assign to a certain edition, and export these data as MARCXML. This paper presents a new approach to bibliographic work and metadata correction. We try to achieve a high quality of the metadata by generating a large amount of metadata to choose from, as well as by giving librarians an intuitive tool to manage their data.

  8. Complete nucleotide sequence of Alfalfa mosaic virus isolated from alfalfa (Medicago sativa L.) in Argentina.

    Science.gov (United States)

    Trucco, Verónica; de Breuil, Soledad; Bejerman, Nicolás; Lenardon, Sergio; Giolitti, Fabián

    2014-06-01

    The complete nucleotide sequence of an Alfalfa mosaic virus (AMV) isolate infecting alfalfa (Medicago sativa L.) in Argentina, AMV-Arg, was determined. The virus genome has the typical organization described for AMV, and comprises 3,643, 2,593, and 2,038 nucleotides for RNA1, 2 and 3, respectively. The whole genome sequence and each encoding region were compared with those of other four isolates that have been completely sequenced from China, Italy, Spain and USA. The nucleotide identity percentages ranged from 95.9 to 99.1 % for the three RNAs and from 93.7 to 99 % for the protein 1 (P1), protein 2 (P2), movement protein and coat protein (CP) encoding regions, whereas the amino acid identity percentages of these proteins ranged from 93.4 to 99.5 %, the lowest value corresponding to P2. CP sequences of AMV-Arg were compared with those of other 25 available isolates, and the phylogenetic analysis based on the CP gene was carried out. The highest percentage of nucleotide sequence identity of the CP gene was 98.3 % with a Chinese isolate and 98.6 % at the amino acid level with four isolates, two from Italy, one from Brazil and the remaining one from China. The phylogenetic analysis showed that AMV-Arg is closely related to subgroup I of AMV isolates. To our knowledge, this is the first report of a complete nucleotide sequence of AMV from South America and the first worldwide report of complete nucleotide sequence of AMV isolated from alfalfa as natural host. PMID:24510307

  9. An emergent theory of digital library metadata enrich then filter

    CERN Document Server

    Stevens, Brett

    2015-01-01

    An Emergent Theory of Digital Library Metadata is a reaction to the current digital library landscape that is being challenged with growing online collections and changing user expectations. The theory provides the conceptual underpinnings for a new approach which moves away from expert defined standardised metadata to a user driven approach with users as metadata co-creators. Moving away from definitive, authoritative, metadata to a system that reflects the diversity of users’ terminologies, it changes the current focus on metadata simplicity and efficiency to one of metadata enriching, which is a continuous and evolving process of data linking. From predefined description to information conceptualised, contextualised and filtered at the point of delivery. By presenting this shift, this book provides a coherent structure in which future technological developments can be considered.

  10. An Approach to Metadata Generation for Learning Objects

    Science.gov (United States)

    Menendez D., Victor; Zapata G., Alfredo; Vidal C., Christian; Segura N., Alejandra; Prieto M., Manuel

    Metadata describe instructional resources and define their nature and use. Metadata are required to guarantee reusability and interchange of instructional resources into e-Learning systems. However, fulfilment of large metadata attributes is a hard and complex task for almost all LO developers. As a consequence many mistakes are made. This can cause the impoverishment of data quality in indexing, searching and recovering process. We propose a methodology to build Learning Objects from digital resources. The first phase includes automatic preprocessing of resources using techniques from information retrieval. Initial metadata obtained in this first phase are then used to search similar LO to propose missed metadata. The second phase considers assisted activities that merge computer advice with human decisions. Suggestions are based on metadata of similar Learning Object using fuzzy logic theory.

  11. A CONCEPTUAL METADATA FRAMEWORK FOR SPATIAL DATA WAREHOUSE

    Directory of Open Access Journals (Sweden)

    M.Laxmaiah

    2013-05-01

    Full Text Available Metadata represents the information about data to be stored in Data Warehouses. It is a mandatory element of Data Warehouse to build an efficient Data Warehouse. Metadata helps in data integration, lineage, data quality and populating transformed data into data warehouse. Spatial data warehouses are based on spatial data mostly collected from Geographical Information Systems (GIS and the transactional systems that are specific to an application or enterprise. Metadata design and deployment is the most critical phase in building of data warehouse where it is mandatory to bring the spatial information and data modeling together. In this paper, we present a holistic metadata framework that drives metadata creation for spatial data warehouse. Theoretically, the proposed metadata framework improves the efficiency of accessing of data in response to frequent queries on SDWs. In other words, the proposed framework decreases the response time of the query and accurate information is fetched from Data Warehouse including the spatial information

  12. FAsTA: A Folksonomy-Based Automatic Metadata Generator

    OpenAIRE

    Al-Khalifa, Hend S.; Davis, Hugh C.

    2007-01-01

    Folksonomies provide a free source of keywords describing web resources, however, these keywords are free form and unstructured. In this paper, we describe a novel tool that converts folksonomy tags into semantic metadata, and present a case study consisting of a framework for evaluating the usefulness of this metadata within the context of a particular eLearning application. The evaluation shows the number of ways in which the generated semantic metadata adds value to the raw folksonomy tags.

  13. ARACORE: AN ARABIC LEARNING OBJECT METADATA FOR INDEXING LEARNING RESOURCES

    OpenAIRE

    Al-Khalifa, Hend; Davis, Hugh

    2005-01-01

    In the era of information systems globalization the need to have educational metadata to index and describe digital learning resources for easy searching, retrieving and reusing them quickly and efficiently is becoming an essential research topic in learning technologies discipline. In this paper we will present a brief overview of metadata standards, protocols and application profiles. Then we will discuss the issues related to the need for an Arabic learning object metadata. Also we will ur...

  14. Using Deep Learning to Predict Demographics from Mobile Phone Metadata

    OpenAIRE

    Felbo, Bjarke; Sundsøy, Pål; Pentland, Alex 'Sandy'; Lehmann, Sune; de Montjoye, Yves-Alexandre

    2015-01-01

    Mobile phone metadata are increasingly used to study human behavior at large-scale. There has recently been a growing interest in predicting demographic information from metadata. Previous approaches relied on hand-engineered features. We here apply, for the first time, deep learning methods to mobile phone metadata using a convolutional network. Our method provides high accuracy on both age and gender prediction. These results show great potential for deep learning approaches for prediction ...

  15. The role of metadata in managing large environmental science datasets. Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Melton, R.B.; DeVaney, D.M. [eds.] [Pacific Northwest Lab., Richland, WA (United States); French, J. C. [Univ. of Virginia, (United States)

    1995-06-01

    The purpose of this workshop was to bring together computer science researchers and environmental sciences data management practitioners to consider the role of metadata in managing large environmental sciences datasets. The objectives included: establishing a common definition of metadata; identifying categories of metadata; defining problems in managing metadata; and defining problems related to linking metadata with primary data.

  16. Alfalfa nitrogen credit to first-year corn: potassium, regrowth, and tillage timing effects

    Science.gov (United States)

    Compared to corn (Zea mays L.) following corn, N guidelines for corn following alfalfa (Medicago sativa L.) in the U.S. Corn Belt suggest that N rates for first-year corn after alfalfa be reduced by about 168 kg N/ha when 43 to 53 alfalfa plants per square meter are present at termination; however, ...

  17. Do glyphosate resistant feral plants and hay fields spread the transgene to conventional alfalfa seed fields?

    Science.gov (United States)

    In addition to meeting domestic needs, large amounts of alfalfa seed and hay produced in the US are being exported overseas. Because alfalfa is an insect pollinated crop, gene flow is a concern. Adding to this alfalfa readily naturalizes along roadsides, irrigation ditches, and unmanaged habitats; a...

  18. Transgene movement in commercial alfalfa seed production: Implications for seed purity

    Science.gov (United States)

    The United States is a major exporter of alfalfa seed and hay and the organic dairy industry is one of the fastest growing agricultural sectors. With the advent of genetically-engineered (GE) alfalfa concerns have risen regarding the coexistence of GE and non GE alfalfa since the crop is largely ou...

  19. Content Metadata Standards for Marine Science: A Case Study

    Science.gov (United States)

    Riall, Rebecca L.; Marincioni, Fausto; Lightsom, Frances L.

    2004-01-01

    The U.S. Geological Survey developed a content metadata standard to meet the demands of organizing electronic resources in the marine sciences for a broad, heterogeneous audience. These metadata standards are used by the Marine Realms Information Bank project, a Web-based public distributed library of marine science from academic institutions and government agencies. The development and deployment of this metadata standard serve as a model, complete with lessons about mistakes, for the creation of similarly specialized metadata standards for digital libraries.

  20. Generating metadata for an experiment: using a tablet ELN

    OpenAIRE

    Willoughby, Cerys; Frey, Jeremy G.; Coles, Simon J.; Coles , Susanne L.

    2014-01-01

    The drive towards more transparency in research and open data increases the importance of being able to find information and make links to the data. Metadata is an essential ingredient for facilitating this discovery. We have discovered from our analysis of metadata usage in the LabTrove ELN that many users do not use metadata effectively and in many cases do not understand what it is or why it is useful. LabTrove provides a flexible metadata framework, enabling the creation of two different ...

  1. Scaling HDFS with a Strongly Consistent Relational Model for Metadata

    OpenAIRE

    Hakimzadeh, Kamal; Peiro Sajjad, Hooman; Dowling, Jim

    2014-01-01

    The Hadoop Distributed File System (HDFS) scales to store tens of petabytes of data despite the fact that the entire file system's metadata must fit on the heap of a single Java virtual machine. The size of HDFS' metadata is limited to under 100 GB in production, as garbage collection events in bigger clusters result in heartbeats timing out to the metadata server(NameNode). In this paper, we address the problem of how to migrate the HDFS' metadata to a relational model, so that we can s...

  2. Multiple centroid method to evaluate the adaptability of alfalfa genotypes

    Directory of Open Access Journals (Sweden)

    Moysés Nascimento

    2015-02-01

    Full Text Available This study aimed to evaluate the efficiency of multiple centroids to study the adaptability of alfalfa genotypes (Medicago sativa L.. In this method, the genotypes are compared with ideotypes defined by the bissegmented regression model, according to the researcher's interest. Thus, genotype classification is carried out as determined by the objective of the researcher and the proposed recommendation strategy. Despite the great potential of the method, it needs to be evaluated under the biological context (with real data. In this context, we used data on the evaluation of dry matter production of 92 alfalfa cultivars, with 20 cuttings, from an experiment in randomized blocks with two repetitions carried out from November 2004 to June 2006. The multiple centroid method proved efficient for classifying alfalfa genotypes. Moreover, it showed no unambiguous indications and provided that ideotypes were defined according to the researcher's interest, facilitating data interpretation.

  3. Adaptability of Alfalfa and Ryegrass to New Reclamation Materials

    Institute of Scientific and Technical Information of China (English)

    WANG ZHAO-FENG; ZHANG Lei-na; FENG Yong-jun; KANG Jing-tao

    2006-01-01

    This paper discussed the adaptability of the alfalfa and ryegrass to the new artificial soil that was composed of fly ash and furfural residue. The potted experiments were taken to compare the growth conditions, yields, and qualities of both grasses. Some pots were covered with wheat stalks and others without. The medium Fluvo-aquic soil was taken as control. The results indicated that the growth of two grasses in the mixture were inferior to their growth in the control in initial period. With the leaching of rain and irrigation, the two grasses improved gradually. The alfalfa and ryegrass both could grow in the new mixture, and the ryegrass would be better to plant in no covered material and the alfalfa in covered. This will be a new way to reclaim subsided land and to improve the environment in mining area.

  4. Metadata: A user`s view

    Energy Technology Data Exchange (ETDEWEB)

    Bretherton, F.P. [Univ. of Wisconsin, Madison, WI (United States); Singley, P.T. [Oak Ridge National Lab., TN (United States)

    1994-12-31

    An analysis is presented of the uses of metadata from four aspects of database operations: (1) search, query, retrieval, (2) ingest, quality control, processing, (3) application to application transfer; (4) storage, archive. Typical degrees of database functionality ranging from simple file retrieval to interdisciplinary global query with metadatabase-user dialog and involving many distributed autonomous databases, are ranked in approximate order of increasing sophistication of the required knowledge representation. An architecture is outlined for implementing such functionality in many different disciplinary domains utilizing a variety of off the shelf database management subsystems and processor software, each specialized to a different abstract data model.

  5. Information resource description creating and managing metadata

    CERN Document Server

    Hider, Philip

    2012-01-01

    An overview of the field of information organization that examines resource description as both a product and process of the contemporary digital environment.This timely book employs the unifying mechanism of the semantic web and the resource description framework to integrate the various traditions and practices of information and knowledge organization. Uniquely, it covers both the domain-specific traditions and practices and the practices of the ?metadata movement' through a single lens ? that of resource description in the broadest, semantic web sense.This approach more readily accommodate

  6. Metadata For Identity Management of Population Registers

    Directory of Open Access Journals (Sweden)

    Olivier Glassey

    2011-04-01

    Full Text Available A population register is an inventory of residents within a country, with their characteristics (date of birth, sex, marital status, etc. and other socio-economic data, such as occupation or education. However, data on population are also stored in numerous other public registers such as tax, land, building and housing, military, foreigners, vehicles, etc. Altogether they contain vast amounts of personal and sensitive information. Access to public information is granted by law in many countries, but this transparency is generally subject to tensions with data protection laws. This paper proposes a framework to analyze data access (or protection requirements, as well as a model of metadata for data exchange.

  7. Effect of Rain Leaching on Chemical Composition of Alfalfa Hay

    OpenAIRE

    Garcia de Hernandez, Mercedes M.

    1981-01-01

    Yield and chemical changes of second-cutting alfalfa hay treated with artificial rain were determined in a 2 x 3 x 2 factorial experiment. Factors were 2 stages of maturity (1 late vegetative; 2 early bloom), 3 levels of artificial rain applied (1 =no rain; 2 =low or approximately 5 mm; 3 =high or approximately 20 mm), and 2 times of applying artificial rain (1 = when drying forage was 40-60% dry matter; 2 =when drying forage was 60-75% dry matter). Thirty samples of alfalfa were collected at...

  8. RAPD analysis of alfalfa DNA mutation via N+ implantation

    Institute of Scientific and Technical Information of China (English)

    LI Yu-Feng; HUANG Qun-Ce; LIANG Yun-Zhang; YU Zeng-Liang

    2003-01-01

    Germination capacity of alfalfa seeds under low energy N+ implantation manifests oscillations goingdown with dose strength. From analyzing alfalfa genome DNA under low energy N+ implantation by RAPD (RandomAmplified Polymorphous DNA), it is recommended that 30 polymorphic DNA fragments be amplified with 8 primersin total 100 primers, and fluorescence intensity of the identical DNA fragments amplified by RAPD is different be-tween CK and treatments. Number of different polymorphic DNA fragments between treatment and CK via N+ im-plantation manifests going up with dose strength.

  9. Metadata Access Tool for Climate and Health

    Science.gov (United States)

    Trtanji, J.

    2012-12-01

    The need for health information resources to support climate change adaptation and mitigation decisions is growing, both in the United States and around the world, as the manifestations of climate change become more evident and widespread. In many instances, these information resources are not specific to a changing climate, but have either been developed or are highly relevant for addressing health issues related to existing climate variability and weather extremes. To help address the need for more integrated data, the Interagency Cross-Cutting Group on Climate Change and Human Health, a working group of the U.S. Global Change Research Program, has developed the Metadata Access Tool for Climate and Health (MATCH). MATCH is a gateway to relevant information that can be used to solve problems at the nexus of climate science and public health by facilitating research, enabling scientific collaborations in a One Health approach, and promoting data stewardship that will enhance the quality and application of climate and health research. MATCH is a searchable clearinghouse of publicly available Federal metadata including monitoring and surveillance data sets, early warning systems, and tools for characterizing the health impacts of global climate change. Examples of relevant databases include the Centers for Disease Control and Prevention's Environmental Public Health Tracking System and NOAA's National Climate Data Center's national and state temperature and precipitation data. This presentation will introduce the audience to this new web-based geoportal and demonstrate its features and potential applications.

  10. Effects of alfalfa meal on carcase quality and fat metabolism of Muscovy ducks.

    Science.gov (United States)

    Jiang, J F; Song, X M; Huang, X; Wu, J L; Zhou, W D; Zheng, H C; Jiang, Y Q

    2012-01-01

    1. The effects of alfalfa meal on carcase quality and fat metabolism of Muscovy duck were evaluated. The objective of this research was to establish whether alfalfa meal can reduce fat content and improve carcase quality of Muscovy duck. Animal products with a high fat content present a risk factor for many diseases. Reducing fat content in poultry products is an important goal for the poultry industry. 2. A total of 240 14-d-old white Muscovy ducks were selected and randomly allocated to 1 of 4 dietary treatments containing 0, 3, 6, and 9% of alfalfa meal for 5 weeks. Growth performances were recorded and carcase characteristics and lipid parameters were analysed. 3. Results showed that 3, 6, and 9% alfalfa meal in diet had no significant effects on growth performance of Muscovy ducks from 14 to 49 d of age. Ducks given 3, 6, and 9% alfalfa meal had significantly higher dressing percentage and lower abdominal fat percentage compared with those given no alfalfa meal. Ducks given 9% alfalfa meal had higher breast meat percentage compared with those given no alfalfa meal. The concentrations of triglyceride, total cholesterol, low density lipoprotein (LDL), very low density lipoprotein (VLDL) and free fatty acid in serum of ducks fed on alfalfa meal decreased. Alfalfa meal in the diet decreased abdominal fat percentage and improved carcase traits of Muscovy duck. 4. The study showed that dietary alfalfa meal decreased abdominal fat percentage and improved carcase traits, without an adverse effect on performance.

  11. User's Guide and Metadata to Coastal Biodiversity Risk Analysis Tool (CBRAT): Framework for the Systemization of Life History and Biogeographic Information

    Science.gov (United States)

    ABSTRACTUser’s Guide & Metadata to Coastal Biodiversity Risk Analysis Tool (CBRAT): Framework for the Systemization of Life History and Biogeographic Information(EPA/601/B-15/001, 2015, 123 pages)Henry Lee II, U.S. EPA, Western Ecology DivisionKatharine Marko, U.S. EPA,...

  12. Erwinia herbicola isolates from alfalfa plants may play a role in nodulation of alfalfa by Rhizobium meliloti.

    OpenAIRE

    Handelsman, J; Brill, W J

    1985-01-01

    Erwinia herbicola was isolated from roots of plants derived from surface-sterilized seeds of all alfalfa varieties that were tested. Some of these E. herbicola strains affected nodulation by certain strains of Rhizobium meliloti. In previously published work we presented the isolation of slow-and fast-nodulating variants from a single culture of R. meliloti 102F51. In the absence of E. herbicola, the slow-nodulating variant induced the formation of nodules on alfalfa as rapidly as the faster-...

  13. DCC Digital Curation Manual: Instalment on Learning Object Metadata (LOM)

    OpenAIRE

    Campbell, Lorna

    2007-01-01

    Instalment on the role of learning object metadata (LOM) within the digital curation life-cycle. Describes the increasingly important role of learning object metadata for the digital curation and re-use of educational resources, provides some practical applications, and describes the topic’s place within an international context.

  14. SM4AM: A Semantic Metamodel for Analytical Metadata

    DEFF Research Database (Denmark)

    Varga, Jovan; Romero, Oscar; Pedersen, Torben Bach;

    2014-01-01

    . We present SM4AM, a Semantic Metamodel for Analytical Metadata created as an RDF formalization of the Analytical Metadata artifacts needed for user assistance exploitation purposes in next generation BI systems. We consider the Linked Data initiative and its relevance for user assistance...

  15. Metadata in the Collaboratory for Multi-Scale Chemical Science

    Energy Technology Data Exchange (ETDEWEB)

    Pancerella, Carmen M.; Hewson, John; Koegler, Wendy S.; Leahy, David; Lee, Michael; Rahn, Larry; Yang, Christine; Myers, James D.; Didier, Brett T.; McCoy, Renata; Schuchardt, Karen L.; Stephan, Eric G.; Windus, Theresa L.; Amin, Kaizer; Bittner, Sandra; Lansing, Carina S.; Minkoff, Michael; Nijsure, Sandeep; von Laszewski, Gregor; Pinzon, Reinhardt; Ruscic, Branko; Wagner, Albert F.; Wang, Baoshan; Pitz, William; Ho, Yen-Ling; Montoya, David W.; Xu, Lili; Allison, Thomas C.; Green, William H.; Frenklach, Michael

    2003-10-02

    The goal of the Collaboratory for the Multi-scale Chemical Sciences (CMCS) [1] is to develop an informatics-based approach to synthesizing multi-scale chemistry information to create knowledge in the chemical sciences. CMCS is using a portal and metadata-aware content store as a base for building a system to support inter-domain knowledge exchange in chemical science. Key aspects of the system include configurable metadata extraction and translation, a core schema for scientific pedigree, and a suite of tools for managing data and metadata and visualizing pedigree relationships between data entries. CMCS metadata is represented using Dublin Core with metadata extensions that are useful to both the chemical science community and the science community in general. CMCS is working with several chemistry groups who are using the system to collaboratively assemble and analyze existing data to derive new chemical knowledge. In this paper we discuss the project’s metadata-related requirements, the relevant software infrastructure, core metadata schema, and tools that use the metadata to enhance science

  16. A Distributed Metadata Management, Data Discovery and Access System

    CERN Document Server

    Palanisamy, Giriprakash; Green, Jim; Wilson, Bruce

    2010-01-01

    Mercury is a federated metadata harvesting, search and retrieval tool based on both open source and software developed at Oak Ridge National Laboratory. It was originally developed for NASA, and the Mercury development consortium now includes funding from NASA, USGS, and DOE. A major new version of Mercury was developed during 2007. This new version provides orders of magnitude improvements in search speed, support for additional metadata formats, integration with Google Maps for spatial queries, support for RSS delivery of search results, among other features. Mercury provides a single portal to information contained in disparate data management systems. It collects metadata and key data from contributing project servers distributed around the world and builds a centralized index. The Mercury search interfaces then allow the users to perform simple, fielded, spatial and temporal searches across these metadata sources. This centralized repository of metadata with distributed data sources provides extremely fa...

  17. A Spatialization-based Method for Checking and Updating Metadata

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    In this paper the application of spatialization technology on metadata quality check and updating was discussed. A new method based on spatialization was proposed for checking and updating metadata to overcome the deficiency of text based methods with the powerful functions of spatial query and analysis provided by GIS software. This method employs the technology of spatialization to transform metadata into a coordinate space and the functions of spatial analysis in GIS to check and update spatial metadata in a visual environment. The basic principle and technical flow of this method were explained in detail, and an example of implementation using ArcMap of GIS software was illustrated with a metadata set of digital raster maps. The result shows the new method with the support of interaction of graph and text is much more intuitive and convenient than the ordinary text based method, and can fully utilize the functions of GIS spatial query and analysis with more accuracy and efficiency.

  18. EXIF Custom: Automatic image metadata extraction for Scratchpads and Drupal

    Directory of Open Access Journals (Sweden)

    Ed Baker

    2013-09-01

    Full Text Available Many institutions and individuals use embedded metadata to aid in the management of their image collections. Many deskop image management solutions such as Adobe Bridge and online tools such as Flickr also make use of embedded metadata to describe, categorise and license images. Until now Scratchpads (a data management system and virtual research environment for biodiversity  have not made use of these metadata, and users have had to manually re-enter this information if they have wanted to display it on their Scratchpad site. The Drupal described here allows users to map metadata embedded in their images to the associated field in the Scratchpads image form using one or more customised mappings. The module works seamlessly with the bulk image uploader used on Scratchpads and it is therefore possible to upload hundreds of images easily with automatic metadata (EXIF, XMP and IPTC extraction and mapping.

  19. METADATA EXPANDED SEMANTICALLY BASED RESOURCE SEARCH IN EDUCATION GRID

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    With the rapid increase of educational resources, how to search for necessary educational resource quickly is one of most important issues. Educational resources have the characters of distribution and heterogeneity, which are the same as the characters of Grid resources. Therefore, the technology of Grid resources search was adopted to implement the educational resources search. Motivated by the insufficiency of currently resources search methods based on metadata, a method of extracting semantic relations between words constituting metadata is proposed. We mainly focus on acquiring synonymy, hyponymy, hypernymy and parataxis relations. In our schema, we extract texts related to metadata that will be expanded from text spatial through text extraction templates. Next, metadata will be obtained through metadata extraction templates. Finally, we compute semantic similarity to eliminate false relations and construct a semantic expansion knowledge base. The proposed method in this paper has been applied on the education grid.

  20. Managing ebook metadata in academic libraries taming the tiger

    CERN Document Server

    Frederick, Donna E

    2016-01-01

    Managing ebook Metadata in Academic Libraries: Taming the Tiger tackles the topic of ebooks in academic libraries, a trend that has been welcomed by students, faculty, researchers, and library staff. However, at the same time, the reality of acquiring ebooks, making them discoverable, and managing them presents library staff with many new challenges. Traditional methods of cataloging and managing library resources are no longer relevant where the purchasing of ebooks in packages and demand driven acquisitions are the predominant models for acquiring new content. Most academic libraries have a complex metadata environment wherein multiple systems draw upon the same metadata for different purposes. This complexity makes the need for standards-based interoperable metadata more important than ever. In addition to complexity, the nature of the metadata environment itself typically varies slightly from library to library making it difficult to recommend a single set of practices and procedures which would be releva...

  1. Managing puncturevine in alfalfa hay and along field edges

    Science.gov (United States)

    Puncturevine (Tribulus terrestris) is a nuisance and difficult to control weed in alfalfa hay field edges and borders. Puncturevine contaminated hay can contain high levels of nitrates and burs can injure mouths of livestock, lowering the value and quality of the hay. Puncturevine is a summer annual...

  2. Impact of preceding crop on alfalfa competitiveness with weeds

    Science.gov (United States)

    Organic producers would like to include no-till practices in their farming systems. We are seeking to develop a continuous no-till system for organic farming, based on a complex rotation that includes a 3-year sequence of alfalfa. In this study, we evaluated impact of preceding crop on weed infest...

  3. The radiosensitivity of alfalfa varieties and the fuzzy concentration analysis

    International Nuclear Information System (INIS)

    The dried alfalfa seeds (12.1% moisture) were exposed to 6'0Co γ radiation field with 0∼36.1 C/kg radiation doses (irradiation rate is 2.84 x 10-2 C/(kg·min)) to observe and measure some radio-bio-effectivity. In the range of irradiation doses, vitality index, root length, seedling survival rate, seedling height, plant height and grass yield decreased and pollen sterility, micro-nucleus rate, free radical relative content increased as the amount of radiation increased. The activity of peroxidase increased as the amount of radiation increased within certain range of dose and tended to decreased beyond that range. Vitality index and root length, which dosage effect curve is compatible with multiple targets-single hit model, and seedling survival rate, seedling height, plant height and grass yield, which dosage effect curve is compatible with linear regression model. There were strong co-relations between the seedling height, micro-nucleus cell rate and the free radical relative content (P<0.01). There were very significant difference (P<0.01) between the alfalfa species and varieties. With fuzzy concentration analysis method, the alfalfa sample were classified into five groups: higher sensitive, sensitive, intermediate, resistant, higher resistant. The suitable irradiation doses for the alfalfa species and varieties are between 12.9∼34.8 mCi/kg

  4. Characterization of alfalfa populations contrasting for root system architecture (RSA)

    Science.gov (United States)

    The root system architecture affects the capacity for nutrient and water uptake thus impacting biomass yield production and may contribute to the persistence of perennial plants. The objectives of this study were to phenotype the roots of three alfalfa populations and identify differences between di...

  5. Assessing disease stress and modeling yield losses in alfalfa

    Science.gov (United States)

    Guan, Jie

    Alfalfa is the most important forage crop in the U.S. and worldwide. Fungal foliar diseases are believed to cause significant yield losses in alfalfa, yet, little quantitative information exists regarding the amount of crop loss. Different fungicides and application frequencies were used as tools to generate a range of foliar disease intensities in Ames and Nashua, IA. Visual disease assessments (disease incidence, disease severity, and percentage defoliation) were obtained weekly for each alfalfa growth cycle (two to three growing cycles per season). Remote sensing assessments were performed using a hand-held, multispectral radiometer to measure the amount and quality of sunlight reflected from alfalfa canopies. Factors such as incident radiation, sun angle, sensor height, and leaf wetness were all found to significantly affect the percentage reflectance of sunlight reflected from alfalfa canopies. The precision of visual and remote sensing assessment methods was quantified. Precision was defined as the intra-rater repeatability and inter-rater reliability of assessment methods. F-tests, slopes, intercepts, and coefficients of determination (R2) were used to compare assessment methods for precision. Results showed that among the three visual disease assessment methods (disease incidence, disease severity, and percentage defoliation), percentage defoliation had the highest intra-rater repeatability and inter-rater reliability. Remote sensing assessment method had better precision than the percentage defoliation assessment method based upon higher intra-rater repeatability and inter-rater reliability. Significant linear relationships between canopy reflectance (810 nm), percentage defoliation and yield were detected using linear regression and percentage reflectance (810 nm) assessments were found to have a stronger relationship with yield than percentage defoliation assessments. There were also significant linear relationships between percentage defoliation, dry

  6. Metadata salad at the Cordoba Observatory

    CERN Document Server

    Lencinas, Verónica

    2016-01-01

    The Plate Archive of the Cordoba Observatory includes 20.000 photographs and spectra on glass plates dating from 1893 to 1983. This contribution describes the work performed since the plate archive was transferred to the Observatory Library in 2011. In 2014 an interdisciplinary team was assembled and a research grant from the National University of Cordoba was obtained with the objectives of preserving the glass plates and generate public access for astronomers and other audiences. The preservation work not only includes practical intervention to improve conservation conditions for the whole archive, but also a diagnose of the preservation conditions for the plates and identification of best practices for cleaning the plates. The access envisioned through digitization requires not only the scanning of all the plates, but also careful definition and provision of metadata. In this regard, each institutional level involved -in this case: archive, library, astronomical observatory and public university - demands ...

  7. Evolution of the ATLAS Metadata Interface (AMI)

    CERN Document Server

    Odier, Jerome; The ATLAS collaboration; Fulachier, Jerome; Lambert, Fabian

    2015-01-01

    The ATLAS Metadata Interface (AMI) can be considered to be a mature application because it has existed for at least 10 years. Over the years, the number of users and the number of functions provided for these users has increased. It has been necessary to adapt the hardware infrastructure in a seamless way so that the Quality of Service remains high. We will describe the evolution of the application from the initial one, using single server with a MySQL backend database, to the current state, where we use a cluster of Virtual Machines on the French Tier 1 Cloud at Lyon, an ORACLE database backend also at Lyon, with replication to CERN using ORACLE streams behind a back-up server.

  8. SEMANTIC METADATA FOR HETEROGENEOUS SPATIAL PLANNING DOCUMENTS

    Directory of Open Access Journals (Sweden)

    A. Iwaniak

    2016-09-01

    Full Text Available Spatial planning documents contain information about the principles and rights of land use in different zones of a local authority. They are the basis for administrative decision making in support of sustainable development. In Poland these documents are published on the Web according to a prescribed non-extendable XML schema, designed for optimum presentation to humans in HTML web pages. There is no document standard, and limited functionality exists for adding references to external resources. The text in these documents is discoverable and searchable by general-purpose web search engines, but the semantics of the content cannot be discovered or queried. The spatial information in these documents is geographically referenced but not machine-readable. Major manual efforts are required to integrate such heterogeneous spatial planning documents from various local authorities for analysis, scenario planning and decision support. This article presents results of an implementation using machine-readable semantic metadata to identify relationships among regulations in the text, spatial objects in the drawings and links to external resources. A spatial planning ontology was used to annotate different sections of spatial planning documents with semantic metadata in the Resource Description Framework in Attributes (RDFa. The semantic interpretation of the content, links between document elements and links to external resources were embedded in XHTML pages. An example and use case from the spatial planning domain in Poland is presented to evaluate its efficiency and applicability. The solution enables the automated integration of spatial planning documents from multiple local authorities to assist decision makers with understanding and interpreting spatial planning information. The approach is equally applicable to legal documents from other countries and domains, such as cultural heritage and environmental management.

  9. Semantic Metadata for Heterogeneous Spatial Planning Documents

    Science.gov (United States)

    Iwaniak, A.; Kaczmarek, I.; Łukowicz, J.; Strzelecki, M.; Coetzee, S.; Paluszyński, W.

    2016-09-01

    Spatial planning documents contain information about the principles and rights of land use in different zones of a local authority. They are the basis for administrative decision making in support of sustainable development. In Poland these documents are published on the Web according to a prescribed non-extendable XML schema, designed for optimum presentation to humans in HTML web pages. There is no document standard, and limited functionality exists for adding references to external resources. The text in these documents is discoverable and searchable by general-purpose web search engines, but the semantics of the content cannot be discovered or queried. The spatial information in these documents is geographically referenced but not machine-readable. Major manual efforts are required to integrate such heterogeneous spatial planning documents from various local authorities for analysis, scenario planning and decision support. This article presents results of an implementation using machine-readable semantic metadata to identify relationships among regulations in the text, spatial objects in the drawings and links to external resources. A spatial planning ontology was used to annotate different sections of spatial planning documents with semantic metadata in the Resource Description Framework in Attributes (RDFa). The semantic interpretation of the content, links between document elements and links to external resources were embedded in XHTML pages. An example and use case from the spatial planning domain in Poland is presented to evaluate its efficiency and applicability. The solution enables the automated integration of spatial planning documents from multiple local authorities to assist decision makers with understanding and interpreting spatial planning information. The approach is equally applicable to legal documents from other countries and domains, such as cultural heritage and environmental management.

  10. Design and Implementation of a Metadata-rich File System

    Energy Technology Data Exchange (ETDEWEB)

    Ames, S; Gokhale, M B; Maltzahn, C

    2010-01-19

    Despite continual improvements in the performance and reliability of large scale file systems, the management of user-defined file system metadata has changed little in the past decade. The mismatch between the size and complexity of large scale data stores and their ability to organize and query their metadata has led to a de facto standard in which raw data is stored in traditional file systems, while related, application-specific metadata is stored in relational databases. This separation of data and semantic metadata requires considerable effort to maintain consistency and can result in complex, slow, and inflexible system operation. To address these problems, we have developed the Quasar File System (QFS), a metadata-rich file system in which files, user-defined attributes, and file relationships are all first class objects. In contrast to hierarchical file systems and relational databases, QFS defines a graph data model composed of files and their relationships. QFS incorporates Quasar, an XPATH-extended query language for searching the file system. Results from our QFS prototype show the effectiveness of this approach. Compared to the de facto standard, the QFS prototype shows superior ingest performance and comparable query performance on user metadata-intensive operations and superior performance on normal file metadata operations.

  11. DEAM:Decoupled, Expressive, Area-Efficient Metadata Cache

    Institute of Scientific and Technical Information of China (English)

    ‘刘鹏; 方磊; 黄巍

    2014-01-01

    Chip multiprocessor presents brand new opportunities for holistic on-chip data and coherence management solutions. An intelligent protocol should be adaptive to the fine-grain accessing behavior. And in terms of storage of metadata, the size of conventional directory grows as the square of the number of processors, making it very expensive in large-scale systems. In this paper, we propose a metadata cache framework to achieve three goals: 1) reducing the latency of data access and coherence activities, 2) saving the storage of metadata, and 3) providing support for other optimization techniques. The metadata is implemented with compact structures and tracks the dynamically changing access pattern. The pattern information is used to guide the delegation and replication of decoupled data and metadata to allow fast access. We also use our metadata cache as a building block to enhance stream prefetching. Using detailed execution-driven simulation, we demonstrate that our protocol achieves an average speedup of 1.12X compared with a shared cache protocol with 1/5 of the storage of metadata.

  12. A Pan-European and Cross-Discipline Metadata Portal

    Science.gov (United States)

    Widmann, Heinrich; Thiemann, Hannes; Lautenschlager, Michael

    2014-05-01

    In recent years, significant investments have been made to create a pan-European e-infrastructure supporting multiple and diverse research communities. This led to the establishment of the community-driven European Data Infrastructure (EUDAT) project that implements services to tackle the specific challenges of international and interdisciplinary research data management. The EUDAT metadata service B2FIND plays a central role in this context as a repository and a search portal for the diverse metadata collected from heterogeneous sources. For this we built up a comprehensive joint metadata catalogue and an open data portal and offer support for new communities interested in publishing their data within EUDAT. The implemented metadata ingestion workflow consists in three steps. First the metadata records - provided either by various research communities or via other EUDAT services - are harvested. Afterwards the raw metadata records are converted and mapped to unified key-value dictionaries. The semantic mapping of the non-uniform community specific metadata to homogenous structured datasets is hereby the most subtle and challenging task. Finally the mapped records are uploaded as datasets to the catalogue and displayed in the portal. The homogenisation of the different community specific data models and vocabularies enables not only the unique presentation of these datasets as tables of field-value pairs but also the faceted, spatial and temporal search in the B2FIND metadata portal. Furthermore the service provides transparent access to the scientific data objects through the given references in the metadata. We present here the functionality and the features of the B2FIND service and give an outlook of further developments.

  13. Improving Metadata Compliance for Earth Science Data Records

    Science.gov (United States)

    Armstrong, E. M.; Chang, O.; Foster, D.

    2014-12-01

    One of the recurring challenges of creating earth science data records is to ensure a consistent level of metadata compliance at the granule level where important details of contents, provenance, producer, and data references are necessary to obtain a sufficient level of understanding. These details are important not just for individual data consumers but also for autonomous software systems. Two of the most popular metadata standards at the granule level are the Climate and Forecast (CF) Metadata Conventions and the Attribute Conventions for Dataset Discovery (ACDD). Many data producers have implemented one or both of these models including the Group for High Resolution Sea Surface Temperature (GHRSST) for their global SST products and the Ocean Biology Processing Group for NASA ocean color and SST products. While both the CF and ACDD models contain various level of metadata richness, the actual "required" attributes are quite small in number. Metadata at the granule level becomes much more useful when recommended or optional attributes are implemented that document spatial and temporal ranges, lineage and provenance, sources, keywords, and references etc. In this presentation we report on a new open source tool to check the compliance of netCDF and HDF5 granules to the CF and ACCD metadata models. The tool, written in Python, was originally implemented to support metadata compliance for netCDF records as part of the NOAA's Integrated Ocean Observing System. It outputs standardized scoring for metadata compliance for both CF and ACDD, produces an objective summary weight, and can be implemented for remote records via OPeNDAP calls. Originally a command-line tool, we have extended it to provide a user-friendly web interface. Reports on metadata testing are grouped in hierarchies that make it easier to track flaws and inconsistencies in the record. We have also extended it to support explicit metadata structures and semantic syntax for the GHRSST project that can be

  14. Revisiting the Economic Injury Level and Economic Threshold Model for Potato Leafhopper (Hemiptera: Cicadellidae) in Alfalfa.

    Science.gov (United States)

    Chasen, Elissa M; Undersander, Dan J; Cullen, Eileen M

    2015-08-01

    The economic injury level for potato leafhopper, Empoasca fabae (Harris), in alfalfa (Medicago sativa L.) was developed over 30 yr ago. In response to increasing market value of alfalfa, farmers and consultants are interested in reducing the economic threshold for potato leafhopper in alfalfa. To address this question, caged field trials were established on two consecutive potato leafhopper susceptible crops in 2013. Field cages were infested with a range of potato leafhopper densities to create a linear regression of alfalfa yield response. The slopes, or yield loss per insect, for the linear regressions of both trials were used to calculate an economic injury level for a range of current alfalfa market values and control costs. This yield-loss relationship is the first quantification that could be used to help assess whether the economic threshold should be lowered, given the increased market value of alfalfa.

  15. Growth With of Alfalfa Mutant in Different Nitrogen Fertilizer and Defoliation Intensity

    Directory of Open Access Journals (Sweden)

    Widyati Slamet

    2012-10-01

    Full Text Available The research was conducted to evaluate growth  of alfalfa mutan (plant height increment, number of leaves and dry matter production in different  Nitrogen Fertilizer and defoliation intensity. The design used was randomized block design 4x2 factorial with 3 replications. The first was dosage of Nitrogen fertilizerNitrogen   (0, 30, 60 and 90 kg N / ha,  the second factor was defoliation intensity (5 and 10 cm. Variables observed alfalfa growth (plant height increment, number of leaves, the production of dry matter (DM forage. The results showed that different N fertilization did not affect the growth of alfalfa mutants. Defoliation intensity  affectedmnumber of leaves and   DM  production of alfalfa mutant. Fertilization to 90 kg N / ha has not affected the growth and   defoliation  intensity 10 cm gave better growth on alfalfa mutant.   [Keywords: alfalfa mutant; Nitrogen fertilizer; defoliation; growth

  16. Design and Implementation of Two-Level Metadata Server in Small-Scale Cluster File System

    Institute of Scientific and Technical Information of China (English)

    LIU Yuling; YU Hongfen; SONG Weiwei

    2006-01-01

    The reliability and high performance of metadata service is crucial to the store architecture. A novel design of a two-level metadata server file system (TTMFS) is presented, which behaves high reliability and performance. The merits both centralized management and distributed management are considered simultaneously in our design. In this file system, the advanced-metadata server is responsible for manage directory metadata and the whole namespace. The double-metadata server is responsible for maintaining file metadata. And this paper uses the Markov return model to analyze the reliability of the two-level metadata server. The experiment data indicates that the design can provide high throughput.

  17. Animal feed compositions containing phytase derived from transgenic alfalfa and methods of use thereof

    Science.gov (United States)

    Austin-Phillips, Sandra; Koegel, Richard G.; Straub, Richard J.; Cook, Mark

    2001-01-01

    A value-added composition of matter containing plant matter from transgenic alfalfa which expresses exogenous phytase activity is disclosed. The phytase activity is a gene product of an exogenous gene encoding for phytase which has been stably incorporated into the genome of alfalfa plants. The transgenic alfalfa expresses phytase activity in nutritionally-significant amounts, thereby enabling its use in animal feeds to eliminate the need for phosphorous supplementation of livestock, poultry, and fish feed rations.

  18. Population dynamics of overwintering life stages of the alfalfa weevil, Hypera postica (Gyllenhal)

    OpenAIRE

    Hilburn, Daniel J.

    1985-01-01

    Virginia is a natural laboratory for studying overwintering habits of the alfalfa weevi1. At higher elevations, winters are relatively harsh and weevil pressure on the alfalfa crop is usually light. Much heavier pressure is the rule at lower elevations where winters are milder. The goal of this study was to examine the effects of fall and winter temperatures, parasites, and fall regrowth management on population dynamics of overwintering stages of this insect. Sixteen commercial alfalfa field...

  19. Impact of Bee Species and Plant Density on Alfalfa Pollination and Potential for Gene Flow

    OpenAIRE

    Johanne Brunet; Stewart, Christy M.

    2010-01-01

    In outcrossing crops like alfalfa, various bee species can contribute to pollination and gene flow in seed production fields. With the increasing use of transgenic crops, it becomes important to determine the role of these distinct pollinators on alfalfa pollination and gene flow. The current study examines the relative contribution of honeybees, three bumble bee species, and three solitary bee species to pollination and gene flow in alfalfa. Two wild solitary bee species and one wild bumble ...

  20. USGS 24k Digital Raster Graphic (DRG) Metadata

    Data.gov (United States)

    Minnesota Department of Natural Resources — Metadata for the scanned USGS 24k Topograpic Map Series (also known as 24k Digital Raster Graphic). Each scanned map is represented by a polygon in the layer and...

  1. A framework for basic administrative metadata in digital libraries

    Institute of Scientific and Technical Information of China (English)

    ZHENG; Qiaoying; WANG; Shaoping

    2008-01-01

    Administrative metadata means the expansion of the metadata research to the administrative level of resource development.Based on the basic administrative sections in the information resource lifecycle(IRL),the framework for basic administrative metadata(FBAM)is helpful in constructing open interoperable platforms for acquisition,processing and services of information resources in digital libraries.It facilitates the seamless communication,the cooperative construction and management,and the sharing of digital resources.The formulation of FBAM follows the principles of modularity and openness that promote interoperability in resource management.It also adopts the structured methodology of information system design,with which the FBAM data model is developed in conformity withand PREMIS.The capabilities of FBAM are driven by a metadata repository with administrative information that is contained in FBAM records.

  2. Metadata and Metacognition: How can we stimulate reflection for learning?

    NARCIS (Netherlands)

    Specht, Marcus

    2012-01-01

    Specht, M. (2012, 12 September). Metadata and Metacognition: How can we stimulate reflection for learning? Invited presentation given at the seminar on awareness and reflection in learning at the University of Leuven, Leuven, Belgium.

  3. Large geospatial images discovery: metadata model and technological framework

    Directory of Open Access Journals (Sweden)

    Lukáš Brůha

    2015-12-01

    Full Text Available The advancements in geospatial web technology triggered efforts for disclosure of valuable resources of historical collections. This paper focuses on the role of spatial data infrastructures (SDI in such efforts. The work describes the interplay between SDI technologies and potential use cases in libraries such as cartographic heritage. The metadata model is introduced to link up the sources from these two distinct fields. To enhance the data search capabilities, the work focuses on the representation of the content-based metadata of raster images, which is the crucial prerequisite to target the search in a more effective way. The architecture of the prototype system for automatic raster data processing, storage, analysis and distribution is introduced. The architecture responds to the characteristics of input datasets, namely to the continuous flow of very large raster data and related metadata. Proposed solutions are illustrated on the case study of cartometric analysis of digitised early maps and related metadata encoding.

  4. Toward element-level interoperability in bibliographic metadata

    Directory of Open Access Journals (Sweden)

    Eric Childress

    2008-03-01

    Full Text Available This paper discusses an approach and set of tools for translating bibliographic metadata from one format to another. A computational model is proposed to formalize the notion of a 'crosswalk'. The translation process separates semantics from syntax, and specifies a crosswalk as machine executable translation files which are focused on assertions of element equivalence and are closely associated with the underlying intellectual analysis of metadata translation. A data model developed by the authors called Morfrom serves as an internal generic metadata format. Translation logic is written in an XML scripting language designed by the authors called the Semantic Equivalence Expression Language (Seel. These techniques have been built into an OCLC software toolkit to manage large and diverse collections of metadata records, called the Crosswalk Web Service.

  5. Variation in alfalfa leafcutting bee (Hymenoptera: Megachilidae) reproductive success according to location of nests in United States commercial domiciles.

    Science.gov (United States)

    Pitts-Singer, Theresa L

    2013-04-01

    The alfalfa leafcutting bee, Megachile rotundata F., is used extensively to pollinate alfalfa for seed production in western North America. However, it usually is not possible to sustain bee populations in the United States. In the managed pollination system, variable microenvironments are experienced by developing M. rotundata during the nesting season that may influence bee reproductive success. In this study, bee cells were produced in a small alfalfa field and collected from domiciles according to nesting boards and different portions of boards. Examination of cells showed that the production of live overwintering prepupae, diseased larvae, other dead eggs and larvae, and cells attacked by natural enemies varied according to board orientations and positions, and portions of the boards. Northeast-facing board samples were significantly heavier and had more pollen balls and chalkbrood compared with southwest-facing boards. Lower boards in stacks had significantly more chalkbrood than upper boards. Outer portions of boards had significantly more live prepupae and less chalkbrood than middle and inner portions, and outer and middle portions had less summer-emerging bees. These results suggest that reproductive success could be altered by changing the orientation of boards within domiciles or changing the designs of domiciles. To accurately assess the quality of bee populations managed in the commercial loose cell system, a sample of bees should be taken from a pooled sample from all boards in each domicile. Each domicile sample should then be evaluated according to its proportional contribution to the whole field's progeny production (e.g., by weight or volume). PMID:23786038

  6. Progress in the Study of ALFALFA Galaxy Groups

    Science.gov (United States)

    Troischt, Parker; Nichols, Nathan

    2013-04-01

    The Undergraduate ALFALFA (Arecibo Legacy Fast ALFA) Team Groups Project is a collaborative undertaking of faculty and students at 11 institutions, aimed at investigating properties of galaxy groups surveyed by the ALFALFA blind HI survey. The survey covers 7,000 square degrees and is expected to include more than 30,000 extragalactic sources when completed. Here we present analysis of HI spectra taken at the National Astronomy and Ionosphere Center and report on progress made with developing analysis software tools as part of the UAT study. These tools will be implemented with follow up observations of targeted sources generated from the original blind survey. This work has been supported by NSF grants AST-0724918, AST-0725267 and AST-0725380.

  7. Bioinformatics Analysis of Zinc Transporter from Baoding Alfalfa

    Institute of Scientific and Technical Information of China (English)

    Haibo WANG; Junyun GUO

    2012-01-01

    [Objective] This study aimed to perform the bioinformatics analysis of Zinc transporter (ZnT) from Baoding Alfalfa. [Method] Based on the amino acid sequence, the physical and chemical properties, hydrophilicity/hydrophobicity, secondary structure of ZnT from Baoding alfalfa were predicted by a series of bioinformatics software. And the transmembrane domains were predicted by using different online tools. [Result] ZnT is a hydrophobic protein containing 408 amino acids with the theoretical pl of 5.94, and it has 7 potential transmembrane hydrophobic regions. In the sec- ondary structure, co-helix (Hh) accounted for 48.04%, extended strand (Ee) for 9.56%, random coil (Cc) for 42.40%, which was accored with the characteristic of transmembrane protein. [Conclusion] mZnT is a member of CDF family, responsible for transporting Zn^2+ out of the cell membrane to reduce the concentration and toxicity of Zn^2+.

  8. Developing PYTHON Codes for the Undergraduate ALFALFA Team

    Science.gov (United States)

    Troischt, Parker; Ryan, Nicholas; Alfalfa Team

    2016-03-01

    We describe here progress toward developing a number of new PYTHON routines to be used by members of the Undergraduate ALFALFA Team. The codes are designed to analyze HI spectra and assist in identifying and categorizing some of the intriguing sources found in the initial blind ALFALFA survey. Numerical integration is performed on extragalactic sources using 21cm line spectra produced with the L-Band Wide receiver at the National Astronomy and Ionosphere Center. Prior to the integration, polynomial fits are employed to obtain an appropriate baseline for each source. The codes developed here are part of a larger team effort to use new PYTHON routines in order to replace, upgrade, or supplement a wealth of existing IDL codes within the collaboration. This work has been supported by NSF Grant AST-1211005.

  9. De-Fragmenting Knowledge: Using Metadata for Interconnecting Courses

    OpenAIRE

    Ronchetti, Marco; Giuliani, Alberto; Saini, Paramjeet

    2003-01-01

    E-learning systems are often based on the notion of "course": an interconnected set of resources aiming at presenting material related to a particular topic. Course authors do provide external links to related material. Such external links are however "frozen" at the time of publication of the course. Metadata are useful for classifying and finding e-learning artifacts. In many cases, metadata are used by Learning Management Systems to import, export, sequence and present learning objects. Th...

  10. Pedagogically informed metadata content and structure for learning and teaching

    OpenAIRE

    Gilbert, Lester; Sitthisak, Onjira

    2007-01-01

    In order to be able to search, compare, gap analyse, recommend, and visualise learning objects, learning resources, or teaching assets, the metadata structure and content must be able to support pedagogically informed reasoning, inference, and machine processing over the knowledge representations. In this paper, we present the difficulties with current metadata standards in education: Dublin Core educational version and IEEELOM, using examples drawn from the areas of e-learning, institutional...

  11. Eliciting pedagogical metadata for description of learning resources

    OpenAIRE

    Ma, Wenting

    2006-01-01

    Learning object metadata standards exist to facilitate the reusability and discoverability of digital learning resources. However, without extension, these standards are ineffective to support the assembly of learning objects into coherent, larger scale structures. Ontological capture of pedagogical metadata may be critical to developing theory-aware systems capable of recommending complementary resources. In this research, scanning 74 repositories revealed that there is very little pedagogic...

  12. Massive Meta-Data: A New Data Mining Resource

    Science.gov (United States)

    Hugo, W.

    2012-04-01

    Worldwide standardisation, and interoperability initiatives such as GBIF, Open Access and GEOSS (to name but three of many) have led to the emergence of interlinked and overlapping meta-data repositories containing, potentially, tens of millions of entries collectively. This forms the backbone of an emerging global scientific data infrastructure that is both driven by changes in the way we work, and opens up new possibilities in management, research, and collaboration. Several initiatives are concentrated on building a generalised, shared, easily available, scalable, and indefinitely preserved scientific data infrastructure to aid future scientific work. This paper deals with the parallel aspect of the meta-data that will be used to support the global scientific data infrastructure. There are obvious practical issues (semantic interoperability and speed of discovery being the most important), but we are here more concerned with some of the less obvious conceptual questions and opportunities: 1. Can we use meta-data to assess, pinpoint, and reduce duplication of meta-data? 2. Can we use it to reduce overlaps of mandates in data portals, research collaborations, and research networks? 3. What possibilities exist for mining the relationships that exist implicitly in very large meta-data collections? 4. Is it possible to define an explicit 'scientific data infrastructure' as a complex, multi-relational network database, that can become self-maintaining and self-organising in true Web 2.0 and 'social networking' fashion? The paper provides a blueprint for a new approach to massive meta-data collections, and how this can be processed using established analysis techniques to answer the questions posed. It assesses the practical implications of working with standard meta-data definitions (such as ISO 19115, Dublin Core, and EML) in a meta-data mining context, and makes recommendations in respect of extension to support self-organising, semantically oriented 'networks of

  13. Using Metadata Description for Agriculture and Aquaculture Papers

    Directory of Open Access Journals (Sweden)

    P. Šimek, J. Vaněk, V. Očenášek, M. Stočes, T. Vogeltanzova

    2012-12-01

    Full Text Available The paper deals with the most used metadata formats and thesauri suitable for describing scientific and research papers in the domains agriculture, food industry, aquaculture, environment and rural areas. These include the Dublin Core (DC, Metadata Object Description Schema (MODS, Virtual Open Access Agriculture and Aquaculture Repository Metadata Application Profile (VOA3R AP and the AGROVOC thesaurus. Having analyzed the metadata formats and research paper lifecycle, the authors would recommend that each paper should entail metadata description as soon as it is published. The metadata are to describe the content and properties of the paper. One of the most suitable metadata formats is the VOA3R AP that is partially patterned on the DC and combined with the AGROVOC thesaurus. As a result, an effective description, availability and automatic data exchange between and among local and central repositories should be attained.The knowledge and data presented in the present paper were obtained as a result of the following research programs and grant schemes: the Grant No. 20121044 of the Internal Grant Agency titled „Using Automatic Metadata Generation for Research Papers“, the Grant agreement No. 250525 funded by the European Commission corresponding to the VOA3R Project (Virtual Open Access Agriculture & Aquaculture Repository: Sharing Scientific and Scholarly Research related to Agriculture, Food, and Environment, http://voa3r.eu and the Research Program titled „Economy of the Czech Agriculture Resources and their Efficient Use within the Framework of the Multifunctional Agrifood Systems“ of the Czech Ministry of Education, Youth and Sport number VZ MSM 6046070906.

  14. Metadata-based analysis to improve clinical trial exchange

    OpenAIRE

    Luzi, Daniela; Ricci, Fabrizio L. (CNR-IRPPS); Serbanati, Luca D.; GreyNet, Grey Literature Network Service

    2006-01-01

    There are various, important information sources devoted to the diffusion of clinical trials, but they fail to achieve a complete coverage of clinical research. The demand for a mandatory public registration of clinical trials is emerging from different institutions, which are making efforts to develop common metadata schemas to both increase information exchange and make this information publicly available. The paper describes a metadata analysis of the various solutions of CT data represent...

  15. Quality assurance for digital learning object repositories: issues for the metadata creation process

    OpenAIRE

    Currier, Sarah; Barton, Jane; O’Beirne, Rónán; Ryan, Ben

    2004-01-01

    Metadata enables users to find the resources they require, therefore it is an important component of any digital learning object repository. Much work has already been done within the learning technology community to assure metadata quality, focused on the development of metadata standards, specifications and vocabularies and their implementation within repositories. The metadata creation process has thus far been largely overlooked. There has been an assumption that metadata creation will be...

  16. A novel framework for assessing metadata quality in epidemiological and public health research settings

    OpenAIRE

    McMahon, Christiana; Denaxas, Spiros

    2016-01-01

    Metadata are critical in epidemiological and public health research. However, a lack of biomedical metadata quality frameworks and limited awareness of the implications of poor quality metadata renders data analyses problematic. In this study, we created and evaluated a novel framework to assess metadata quality of epidemiological and public health research datasets. We performed a literature review and surveyed stakeholders to enhance our understanding of biomedical metadata quality assessme...

  17. Effects of alfalfa meal on growth performance and gastrointestinal tract development of growing ducks.

    Science.gov (United States)

    Jiang, J F; Song, X M; Huang, X; Zhou, W D; Wu, J L; Zhu, Z G; Zheng, H C; Jiang, Y Q

    2012-10-01

    A study was conducted to evaluate effects of alfalfa meal on growth performance and gastrointestinal tract development of growing layer ducks to provide evidence for application of alfalfa meal in the duck industry. Two hundred and fifty-six healthy Shaoxing 7-wk old growing layer ducks were selected and randomly allocated to 1 of 4 dietary treatments based on corn and soybean meal and containing 0, 3, 6, and 9% of alfalfa meal for 8 wks. Each treatment consisted of 4 replicates of 16 ducks each. Briefly, birds were raised in separate compartments, and each compartment consisted of three parts: indoor floor house, adjacent open area and a connecting water area. The results showed: i) Growing ducks fed alfalfa meal diet were not significantly different in average daily gain, feed intake and gain-to-feed ratio from those fed no alfalfa diet (p>0.05). ii) Alfalfa meal increased the ratio crop, gizzard to live weight, caecum to live weight, the caecum index of growing ducks (pducks increased significantly with the increase of alfalfa meal levels (pducks decreased significantly with the increase of alfalfa meal levels (pducks could improve gastrointestinal tract growth and small intestinal morphology without effect on performance. This experiment provides evidence that alfalfa meal is a very valuable feedstuff for growing layer ducks.

  18. Organizing Internet Resources and the Development of Metadata

    Directory of Open Access Journals (Sweden)

    Hsueh-Hua Chen

    1997-12-01

    Full Text Available There exist lots of differences between information resources on the Internet and those in the traditional libraries. In order to retrieve and utilize digital information effectively in the coming era of information network, libraries have to explore how Internet resources are organized. Using search engines and subject gateway services are two common ways to retrieve and utilize Internet resources. Search engines are based on robot to extract metadata, which are automatic and are cheap to create. Subject gateway services add value through intellectual effort, and are correspondingly expensive. But neither approach is complete as users are interested in resources at various levels of granularity and aggregation which may not be satisfied by either of these two simplified approaches. In order to use the Internet resources effectively, the establishment of metadata is very important.This article describes the definitions and functions of metadata, a variety of metadata creators and sources, the different formats of metadata, the level of structure and fullness of metadata, and finally the responses and reactions from people in library field.[Article content in Chinese

  19. Forensic devices for activism: Metadata tracking and public proof

    Directory of Open Access Journals (Sweden)

    Lonneke van der Velden

    2015-10-01

    Full Text Available The central topic of this paper is a mobile phone application, ‘InformaCam’, which turns metadata from a surveillance risk into a method for the production of public proof. InformaCam allows one to manage and delete metadata from images and videos in order to diminish surveillance risks related to online tracking. Furthermore, it structures and stores the metadata in such a way that the documentary material becomes better accommodated to evidentiary settings, if needed. In this paper I propose InformaCam should be interpreted as a ‘forensic device’. By using the conceptualization of forensics and work on socio-technical devices the paper discusses how InformaCam, through a range of interventions, rearranges metadata into a technology of evidence. InformaCam explicitly recognizes mobile phones as context aware, uses their sensors, and structures metadata in order to facilitate data analysis after images are captured. Through these modifications it invents a form of ‘sensory data forensics'. By treating data in this particular way, surveillance resistance does more than seeking awareness. It becomes engaged with investigatory practices. Considering the extent by which states conduct metadata surveillance, the project can be seen as a timely response to the unequal distribution of power over data.

  20. A Metadata Schema for Geospatial Resource Discovery Use Cases

    Directory of Open Access Journals (Sweden)

    Darren Hardy

    2014-07-01

    Full Text Available We introduce a metadata schema that focuses on GIS discovery use cases for patrons in a research library setting. Text search, faceted refinement, and spatial search and relevancy are among GeoBlacklight's primary use cases for federated geospatial holdings. The schema supports a variety of GIS data types and enables contextual, collection-oriented discovery applications as well as traditional portal applications. One key limitation of GIS resource discovery is the general lack of normative metadata practices, which has led to a proliferation of metadata schemas and duplicate records. The ISO 19115/19139 and FGDC standards specify metadata formats, but are intricate, lengthy, and not focused on discovery. Moreover, they require sophisticated authoring environments and cataloging expertise. Geographic metadata standards target preservation and quality measure use cases, but they do not provide for simple inter-institutional sharing of metadata for discovery use cases. To this end, our schema reuses elements from Dublin Core and GeoRSS to leverage their normative semantics, community best practices, open-source software implementations, and extensive examples already deployed in discovery contexts such as web search and mapping. Finally, we discuss a Solr implementation of the schema using a "geo" extension to MODS.

  1. Automated metadata-final project report

    Energy Technology Data Exchange (ETDEWEB)

    Schissel, David [General Atomics, San Diego, CA (United States)

    2016-04-01

    This report summarizes the work of the Automated Metadata, Provenance Cataloging, and Navigable Interfaces: Ensuring the Usefulness of Extreme-Scale Data Project (MPO Project) funded by the United States Department of Energy (DOE), Offices of Advanced Scientific Computing Research and Fusion Energy Sciences. Initially funded for three years starting in 2012, it was extended for 6 months with additional funding. The project was a collaboration between scientists at General Atomics, Lawrence Berkley National Laboratory (LBNL), and Massachusetts Institute of Technology (MIT). The group leveraged existing computer science technology where possible and extended or created new capabilities where required. The MPO project was able to successfully create a suite of software tools that can be used by a scientific community to automatically document their scientific workflows. These tools were integrated into workflows for fusion energy and climate research illustrating the general applicability of the project’s toolkit. Feedback was very positive on the project’s toolkit and the value of such automatic workflow documentation to the scientific endeavor.

  2. Better Living Through Metadata: Examining Archive Usage

    Science.gov (United States)

    Becker, G.; Winkelman, S.; Rots, A.

    2013-10-01

    The primary purpose of an observatory's archive is to provide access to the data through various interfaces. User interactions with the archive are recorded in server logs, which can be used to answer basic questions like: Who has downloaded dataset X? When did she do this? Which tools did she use? The answers to questions like these fill in patterns of data access (e.g., how many times dataset X has been downloaded in the past three years). Analysis of server logs provides metrics of archive usage and provides feedback on interface use which can be used to guide future interface development. The Chandra X-ray Observatory is fortunate in that a database to track data access and downloads has been continuously recording such transactions for years; however, it is overdue for an update. We will detail changes we hope to effect and the differences the changes may make to our usage metadata picture. We plan to gather more information about the geographic location of users without compromising privacy; create improved archive statistics; and track and assess the impact of web “crawlers” and other scripted access methods on the archive. With the improvements to our download tracking we hope to gain a better understanding of the dissemination of Chandra's data; how effectively it is being done; and perhaps discover ideas for new services.

  3. Identifying OH Imposters in the ALFALFA Neutral Hydrogen Survey

    CERN Document Server

    Suess, Katherine A; Haynes, Martha P; Giovanelli, Riccardo

    2016-01-01

    OH megamasers (OHMs) are rare, luminous molecular masers that are typically observed in (ultra) luminous infrared galaxies and serve as markers of major galaxy mergers. In blind emission line surveys such as the Arecibo Legacy Fast Arecibo L-Band Feed Array (ALFALFA) survey for neutral hydrogen (HI), OHMs at z~0.2 can mimic z~0.05 HI lines. We present the results of optical spectroscopy of ambiguous HI detections in the ALFALFA 40% data release detected by the Wide Field Infrared Survey Explorer (WISE) but with uncertain optical counterparts. The optical redshifts, obtained from observations at the Apache Point Observatory, revealed five new OHMs and identified 129 HI optical counterparts. Sixty candidates remain ambiguous. The new OHMs are the first detected in a blind spectral line survey. The number of OHMs in ALFALFA is consistent with predictions from the OH luminosity function. Additionally, the mid-infrared magnitudes and colors of the OHM host galaxies found in a blind survey do not seem to differ fro...

  4. Photosynthate partitioning in alfalfa before harvest and during regrowth

    International Nuclear Information System (INIS)

    During the harvest regrowth cycle of alfalfa (Medicago sativa L.) plants, factors such as source to sink distance, sink size, and inter-organ competition continually change. However, consequent changes in the pattern of photosynthate partitioning from leaves to other organs are poorly understood. The authors objective was to examine photosynthate partitioning from upper and lower alfalfa leaves at intervals before herbage harvest and during regrowth after harvest. The uppermost or lowest fully expanded leaf on the longest or dominant stem was labeled with 14CO2. After a 24-h translocation period, the plants were divided into various organs to determine distribution of the radiocarbon. At that time, the upper leaf preferentially partitioned photosynthate to the shoot apex, unexpanded leaves and auxillary shoots of the dominant shoot, whereas the lower leaf preferentially distributed photosynthate to the crown shoots, crown, root, and nodules. Expressions of 14C partitioning were affected differently by organ mass. While the smallest organs such as nodules and unexpanded leaves always ranked higher for 14C based on relative specific activity, the largest organs such as roots and crown shoots accumulated the largest percentage of total plant recovered radioactivity. The results illustrate the importance of growth stage and leaf position in photosynthate partitioning in alfalfa and the dominance of herbage meristems for current photosynthate during regrowth

  5. Evolving Metadata in NASA Earth Science Data Systems

    Science.gov (United States)

    Mitchell, A.; Cechini, M. F.; Walter, J.

    2011-12-01

    NASA's Earth Observing System (EOS) is a coordinated series of satellites for long term global observations. NASA's Earth Observing System Data and Information System (EOSDIS) is a petabyte-scale archive of environmental data that supports global climate change research by providing end-to-end services from EOS instrument data collection to science data processing to full access to EOS and other earth science data. On a daily basis, the EOSDIS ingests, processes, archives and distributes over 3 terabytes of data from NASA's Earth Science missions representing over 3500 data products ranging from various types of science disciplines. EOSDIS is currently comprised of 12 discipline specific data centers that are collocated with centers of science discipline expertise. Metadata is used in all aspects of NASA's Earth Science data lifecycle from the initial measurement gathering to the accessing of data products. Missions use metadata in their science data products when describing information such as the instrument/sensor, operational plan, and geographically region. Acting as the curator of the data products, data centers employ metadata for preservation, access and manipulation of data. EOSDIS provides a centralized metadata repository called the Earth Observing System (EOS) ClearingHouse (ECHO) for data discovery and access via a service-oriented-architecture (SOA) between data centers and science data users. ECHO receives inventory metadata from data centers who generate metadata files that complies with the ECHO Metadata Model. NASA's Earth Science Data and Information System (ESDIS) Project established a Tiger Team to study and make recommendations regarding the adoption of the international metadata standard ISO 19115 in EOSDIS. The result was a technical report recommending an evolution of NASA data systems towards a consistent application of ISO 19115 and related standards including the creation of a NASA-specific convention for core ISO 19115 elements. Part of

  6. 紫花苜蓿人工草地施肥试验%Effect on alfalfa artificial lawn fertilization test

    Institute of Scientific and Technical Information of China (English)

    万井尉

    2015-01-01

    在辽宁西部坡地上进行紫花苜蓿不同施肥处理试验,经过1年的研究结果表明,在苜蓿人工草地上无论是单一施用氮肥还是复合肥,均可有效地提高牧草产量并取得较为明显的经济效益,其中以每亩施用尿素15 kg和25 kg效果最好,效益最高,每亩可增经济效益分别是40.74元和40.63元。%Hillsides with a slope in the western liaoning alfalfa different fertilization experi-ment was carried out, after a year of research results show that the artificial grass in alfalfa both single nitrogen fertilizer and compound fertilizer, can effectively improve the forage yield and obtain more obvious economic benefits, the effect of applying urea 15 kg and 25 kg per acre to prepare, the highest efficiency, can increase economic benefit per acre is 40.63 yuan and 40.74 yuan respectively.

  7. Using XML to encode TMA DES metadata

    Directory of Open Access Journals (Sweden)

    Oliver Lyttleton

    2011-01-01

    Full Text Available Background: The Tissue Microarray Data Exchange Specification (TMA DES is an XML specification for encoding TMA experiment data. While TMA DES data is encoded in XML, the files that describe its syntax, structure, and semantics are not. The DTD format is used to describe the syntax and structure of TMA DES, and the ISO 11179 format is used to define the semantics of TMA DES. However, XML Schema can be used in place of DTDs, and another XML encoded format, RDF, can be used in place of ISO 11179. Encoding all TMA DES data and metadata in XML would simplify the development and usage of programs which validate and parse TMA DES data. XML Schema has advantages over DTDs such as support for data types, and a more powerful means of specifying constraints on data values. An advantage of RDF encoded in XML over ISO 11179 is that XML defines rules for encoding data, whereas ISO 11179 does not. Materials and Methods: We created an XML Schema version of the TMA DES DTD. We wrote a program that converted ISO 11179 definitions to RDF encoded in XML, and used it to convert the TMA DES ISO 11179 definitions to RDF. Results: We validated a sample TMA DES XML file that was supplied with the publication that originally specified TMA DES using our XML Schema. We successfully validated the RDF produced by our ISO 11179 converter with the W3C RDF validation service. Conclusions: All TMA DES data could be encoded using XML, which simplifies its processing. XML Schema allows datatypes and valid value ranges to be specified for CDEs, which enables a wider range of error checking to be performed using XML Schemas than could be performed using DTDs.

  8. Dr. Hadoop: an infinite scalable metadata management for Hadoop How the baby elephant becomes immortal

    Institute of Scientific and Technical Information of China (English)

    Dipayan DEV; Ripon PATGIRI

    2016-01-01

    In this Exa byte scale era, data increases at an exponential rate. This is in turn generating a massive amount of metadata in the file system. Hadoop is the most widely used framework to deal with big data. Due to this growth of huge amount of metadata, however, the efficiency of Hadoop is questioned numerous times by many researchers. Therefore, it is essential to create an efficient and scalable metadata management for Hadoop. Hash-based mapping and subtree partitioning are suitable in distributed metadata management schemes. Subtrce partitioning does not uniformly distribute workload among the metadata servers, and metadata needs to be migrated to keep the load roughly balanced. Hash-based mapping suffers from a constraint on the locality of metadata, though it uniformly distributes the load among NameNodes, which are the metadata servers of Hadoop. In this paper, we present a circular metadata management mechanism named dynamic circular metadata splitting (DCMS). DCMS preserves metadata locality using consistent hashing and locality-preserving hashing, keeps replicated metadata for excellent reliability, and dynamically distributes metadata among the NameNodes to keep load balancing. NameNode is a centralized heart of the Hadoop. Keeping the directory tree of all files, failure of which causes the single point of failure (SPOF). DCMS removes Hadoop's SPOF and provides an efficient and scalable metadata management. The new framework is named 'Dr. Hadoop' after the name of the authors.

  9. Systemic lupus erythematosus-like syndrome in monkeys fed alfalfa sprouts: role of a nonprotein amino acid.

    Science.gov (United States)

    Malinow, M R; Bardana, E J; Pirofsky, B; Craig, S; McLaughlin, P

    1982-04-23

    Hematologic and serologic abnormalities similar to those observed in human systemic lupus erythematosus (SLE) developed in cynomolgus macaques fed alfalfa sprouts. L-Canavanine sulfate, a constituent of alfalfa sprouts, was incorporated into the diet and reactivated the syndrome in monkeys in which an SLE-like syndrome had previously been induced by the ingestion of alfalfa seeds or sprouts. PMID:7071589

  10. A system for identification of candidate genes controlling cell wall synthesis in alfalfa stems

    Science.gov (United States)

    Usefulness of alfalfa for livestock feeding and production of lignocellulose-derived ethanol would be improved by genetic alteration of stem cell wall concentration and composition. This could be accomplished through selective breeding and transgenic technologies. However, development of alfalfa cel...

  11. Alfalfa interseeded into silage corn can serve as a cover crop and subsequent forage crop

    Science.gov (United States)

    Alfalfa (Medicago sativa) and corn (Zea mays) silage are commonly grown in rotation in dairy forage production systems throughout the northern regions of the USA. Alfalfa interseeded into silage corn could potentially serve two purposes: as a cover crop during the silage corn production year, and as...

  12. Economics of growth regulator treatment of alfalfa seed for interseeding into silage corn

    Science.gov (United States)

    Previous studies have focused on interseeding of alfalfa into corn for use as a temporary cover crop rather than as a means of jump-starting alfalfa production after corn. In ongoing field studies, we are evaluating whether plant growth regulators (PGR) may be used to aid the establishment of inters...

  13. Effects of alfalfa meal on the intestinal microbial diversity and immunity of growing ducks.

    Science.gov (United States)

    Jiang, J F; Song, X M; Wu, J L; Jiang, Y Q

    2014-12-01

    This study was conducted to investigate the effects of alfalfa meal diets on the intestinal microbial diversity and immunity of growing egg-type ducks. A total of 128 healthy 7-week-old female egg-type Shaoxing ducks were selected and randomly assigned into four dietary treatments: 0%, 3%, 6% and 9% alfalfa meal for 8 weeks. Each treatment consisted of four replicates of eight ducks each. Polymerase chain reaction denaturing gradient gel electrophoresis (PCR-DGGE) was used to characterize the microbiota. The results showed that the DGGE fingerprints of the V6-V8 fragments of the 16S rRNA from the caeca and faeces of ducks fed 3%, 6% and 9% alfalfa meal had significantly higher microbiota species richness than those fed 0% alfalfa meal (p ducks fed 3%, 6% and 9% alfalfa meal was significantly higher than those fed 0% alfalfa meal (p 0.05), and the 3-9% alfalfa meal did not affect the growth performance of the growing egg-type ducks. The proliferation of T and B lymphocytes was significantly greater (p ducks. Dietary alfalfa meal supplementation increases intestinal microbial community diversity and improves of the immune response growing egg-type ducks.

  14. Alfalfa transgene dispersal and adventitious presence: understanding grower perception of risk

    Science.gov (United States)

    Recognizing the importance of coexistence, the alfalfa industry has developed a set of Best Management Practices (BMP) to maintain separation of GE and conventional production. But the success of BMP depends upon the degree that growers comply. Therefore we surveyed 530 alfalfa hay and seed producer...

  15. The Productivity and Quality of Alfalfa (Medicago sativa L. in Romanian Forest Steppe

    Directory of Open Access Journals (Sweden)

    Mihai STAVARACHE

    2015-04-01

    Full Text Available Alternative use of alfalfa, for various purposes, including the production of biofuels or food supplement for human alimentation, is a study topic still in its early stages of research. Studying and understanding the biology of alfalfa and the factors with a major influence on it are very important activities. The productivity and quality of alfalfa are two indicators that help determine, in addition to economic value, the way in which alfalfa can be used. Evolution of alfalfa yield and quality depends on many factors, such as the growth stage of alfalfa plants at harvesting. It was observed over three years of vegetation the influence of alfalfa plant growth stage at harvest on plant height, leaves/stems ratio, production of leaves, stems and whole plant (DM - dry matter per hectare and on quality indicators (CP - crude protein, NDF - neutral detergent fiber and ADF - acid detergent fiber. The results showed that, with the advancement of phenological phases, from early bud stage to complete flowering, the total biomass output raised from 2.79 Mg·ha-1 to 4.60 Mg·ha-1, the neutral detergent fiber raised from 48.4-50.6% to 62.0-67.7%, while crude protein content decreased from 21.2-24.0% to 13.3-16.5%. The parameter values were correlated with alfalfa growth stage during the harvesting (significant at the 0.05 and 0.01 probability levels.

  16. Interoperable Solar Data and Metadata via LISIRD 3

    Science.gov (United States)

    Wilson, A.; Lindholm, D. M.; Pankratz, C. K.; Snow, M. A.; Woods, T. N.

    2015-12-01

    LISIRD 3 is a major upgrade of the LASP Interactive Solar Irradiance Data Center (LISIRD), which serves several dozen space based solar irradiance and related data products to the public. Through interactive plots, LISIRD 3 provides data browsing supported by data subsetting and aggregation. Incorporating a semantically enabled metadata repository, LISIRD 3 users see current, vetted, consistent information about the datasets offered. Users can now also search for datasets based on metadata fields such as dataset type and/or spectral or temporal range. This semantic database enables metadata browsing, so users can discover the relationships between datasets, instruments, spacecraft, mission and PI. The database also enables creation and publication of metadata records in a variety of formats, such as SPASE or ISO, making these datasets more discoverable. The database also enables the possibility of a public SPARQL endpoint, making the metadata browsable in an automated fashion. LISIRD 3's data access middleware, LaTiS, provides dynamic, on demand reformatting of data and timestamps, subsetting and aggregation, and other server side functionality via a RESTful OPeNDAP compliant API, enabling interoperability between LASP datasets and many common tools. LISIRD 3's templated front end design, coupled with the uniform data interface offered by LaTiS, allows easy integration of new datasets. Consequently the number and variety of datasets offered by LISIRD has grown to encompass several dozen, with many more to come. This poster will discuss design and implementation of LISIRD 3, including tools used, capabilities enabled, and issues encountered.

  17. Towards a metadata standard for geomagnetic observatory data

    International Nuclear Information System (INIS)

    Complete text of publication follows. Digital records of geomagnetic observatory data have been in use for several decades, but are we currently saving enough information about our observatory data for future generations? Appropriate metadata about an observatory's location, instrumentation and data processing history are essential to understanding an observatory's scientific data and can prove vital when re-examining historical data. Yearbooks are currently the best resource for this information, but their use is in decline and the information within is difficult to disseminate. Setting standards for the content and format of observatory metadata are required to preserve this information and aid interoperability between data providers and users. With better metadata, for example, the discovery that Eskdalemuir hourly mean values from 1911-1931 held at the World Data Centre were 2-hour running means instead of the original hourly values might have been uncovered earlier. The World Data Centres for Geomagnetism at Edinburgh, Boulder and Kyoto have been working to establish a framework for metadata standards for geomagnetic observatory data. We will describe the conclusions from an examination of current standards, including those from the International Organization for Standardization (ISO) and Federal Geographic Data Committee (FGDC), how they could apply to geomagnetic observatories and the advantages and difficulties in this approach. We will show the level of metadata currently held by our WDCs and the result of recent efforts to populate these records. We will discuss lessons learned and look forward to new approaches to this issue.

  18. Semantic Representation of Temporal Metadata in a Virtual Observatory

    Science.gov (United States)

    Wang, H.; Rozell, E. A.; West, P.; Zednik, S.; Fox, P. A.

    2011-12-01

    The Virtual Solar-Terrestrial Observatory (VSTO) Portal at vsto.org provides a set of guided workflows to implement use cases designed solar-terrestrial physics and upper atmospheric science. Semantics are used in VSTO to model abstract instrument and parameter classifications, providing data access to users without extended domain specific vocabularies. The temporal restrictions used in the workflows are currently possible via RESTful services made to a remote system with access to a SQL-based metadata catalog. In order to provide a greater range of temporal reasoning and search capabilities for the user, we propose an alternative architecture design for the VSTO Portal, where the temporal metadata is integrated in the domain ontology. We achieve this integration by converting temporal metadata from the headers of raw data files into RDF using the OWL-Time vocabulary. This presentation covers our work with semantic temporal metadata, including: our representation using OWL-Time, issues that we have faced in persistent storage, and performance and scalability of semantic query. We conclude with discussions of the significance semantic temporal metadata has in virtual observatories.

  19. Complete genome sequence of a new enamovirus from Argentina infecting alfalfa plants showing dwarfism symptoms.

    Science.gov (United States)

    Bejerman, Nicolás; Giolitti, Fabián; Trucco, Verónica; de Breuil, Soledad; Dietzgen, Ralf G; Lenardon, Sergio

    2016-07-01

    Alfalfa dwarf disease, probably caused by synergistic interactions of mixed virus infections, is a major and emergent disease that threatens alfalfa production in Argentina. Deep sequencing of diseased alfalfa plant samples from the central region of Argentina resulted in the identification of a new virus genome resembling enamoviruses in sequence and genome structure. Phylogenetic analysis suggests that it is a new member of the genus Enamovirus, family Luteoviridae. The virus is tentatively named "alfalfa enamovirus 1" (AEV-1). The availability of the AEV-1 genome sequence will make it possible to assess the genetic variability of this virus and to construct an infectious clone to investigate its role in alfalfa dwarfism disease. PMID:27068164

  20. Identifying OH Imposters in the ALFALFA Neutral Hydrogen Survey

    Science.gov (United States)

    Suess, Katherine A.; Darling, Jeremy; Haynes, Martha P.; Giovanelli, Riccardo

    2016-06-01

    OH megamasers (OHMs) are rare, luminous molecular masers that are typically observed in (ultra) luminous infrared galaxies and serve as markers of major galaxy mergers. In blind emission line surveys such as the Arecibo Legacy Fast Arecibo L-Band Feed Array (ALFALFA) survey for neutral hydrogen (H I), OHMs at z ˜ 0.2 can mimic z ˜ 0.05 H I lines. We present the results of optical spectroscopy of ambiguous H I detections in the ALFALFA 40 per cent data release detected by the Wide Field Infrared Survey Explorer (WISE) but with uncertain optical counterparts. The optical redshifts, obtained from observations at the Apache Point Observatory, revealed five new OHMs and identified 129 H I optical counterparts. 60 candidates remain ambiguous. The new OHMs are the first detected in a blind spectral line survey. The number of OHMs in ALFALFA is consistent with predictions from the OH luminosity function. Additionally, the mid-infrared magnitudes and colours of the OHM host galaxies found in a blind survey do not seem to differ from those found in previous targeted surveys. This validates the methods used in previous IR-selected OHM surveys and indicates there is no previously unknown OHM-producing population at z ˜ 0.2. We also provide a method for future surveys to separate OH megamasers from 99 per cent of H I line emitters without optical spectroscopy by using WISE infrared colours and magnitudes. Since the fraction of OHMs found in flux-limited H I surveys is expected to increase with the survey's redshift, this selection method can be applied to future flux-limited high-redshift hydrogen surveys.

  1. Meta-Data Objects as the Basis for System Evolution

    CERN Document Server

    Estrella, Florida; Tóth, N; Kovács, Z; Le Goff, J M; Clatchey, Richard Mc; Toth, Norbert; Kovacs, Zsolt; Goff, Jean-Marie Le

    2001-01-01

    One of the main factors driving object-oriented software development in the Web- age is the need for systems to evolve as user requirements change. A crucial factor in the creation of adaptable systems dealing with changing requirements is the suitability of the underlying technology in allowing the evolution of the system. A reflective system utilizes an open architecture where implicit system aspects are reified to become explicit first-class (meta-data) objects. These implicit system aspects are often fundamental structures which are inaccessible and immutable, and their reification as meta-data objects can serve as the basis for changes and extensions to the system, making it self- describing. To address the evolvability issue, this paper proposes a reflective architecture based on two orthogonal abstractions - model abstraction and information abstraction. In this architecture the modeling abstractions allow for the separation of the description meta-data from the system aspects they represent so that th...

  2. Metadata for fine-grained processing at ATLAS

    CERN Document Server

    Cranshaw, Jack; The ATLAS collaboration

    2016-01-01

    High energy physics experiments are implementing highly parallel solutions for event processing on resources that support concurrency at multiple levels. These range from the inherent large-scale parallelism of HPC resources to the multiprocessing and multithreading needed for effective use of multi-core and GPU-augmented nodes. Such modes of processing, and the efficient opportunistic use of transiently-available resources, lead to finer-grained processing of event data. Previously metadata systems were tailored to jobs that were atomic and processed large, well-defined units of data. The new environment requires a more fine-grained approach to metadata handling, especially with regard to bookkeeping. For opportunistic resources metadata propagation needs to work even if individual jobs are not finalized. This contribution describes ATLAS solutions to this problem in the context of the multiprocessing framework currently in use for LHC Run 2, development underway for the ATLAS multithreaded framework (Athena...

  3. Research on metadata in manufacturing-oriented EAI

    Institute of Scientific and Technical Information of China (English)

    Wang Rui; Li Congxin

    2007-01-01

    Enterprise application integration (EAI) focuses on the collaboration and interconnection of various information systems, so the basic problem to be solved is how EAI guarantees that the applications will produce consistent presentation of data, message and transaction.The metadata methodology may give us certain good ideas.First, the metadata description method of manufacturing information resource, transaction process and message delivery is put forward on the basis of operation analysis of manufacturing-oriented EAI, and then the tree-structured XML schema of corresponding object is built and a framework of metadata application in the discrete Manufacturing-Oriented EAI is established.Finally, a practical enterprise information integration system in Shanghai Tobacco Machine Co., Ltd.is presented as an example to show how it functions.

  4. Transforming and enhancing metadata for enduser discovery: a case study

    Directory of Open Access Journals (Sweden)

    Edward M. Corrado

    2014-07-01

    Full Text Available This paper describes the process developed by Binghamton University Libraries to extract embedded metadata from digital photographs and transform it into descriptive Dublin Core metadata for use in the Libraries’ digital preservation system.In 2011, Binghamton University Libraries implemented the Rosetta digital preservation system (from Ex Libris to preserve digitized and born-digital materials. At the same time, the Libraries’ implemented the Primo discovery tool (from Ex Libris to bring together not only the digital collections in Rosetta, but also bibliographic holdings from our integrated library system and other sources.Currently, the Libraries are working with the campus photographer to preserve and provide access to 350,000+ digital images. Most of these images depict campus events, such as Homecoming, Commencement, etc. that are of historical and immediate social value to the campus community. These images are used widely in marketing and outreach materials, and on the University’s website. However, owing to volume of photographs, as well as to budgetary and other constraints, it is not possible to have library staff inspect the photographs and create a complete descriptive metadata record for each, so we needed to explore different options. Each of photographer’s images contains embedded metadata (file format, date and time stamps, location, etc. and additionally, many of the files also contain basic descriptive information supplied by the photographer, including his name, keywords and/or a short description.Using this basic metadata as a starting point, cataloguing and systems librarians at Binghamton University Libraries were able to create an automated process to reformat and enhance the available descriptive information, crosswalk it to the Dublin Core Metadata Element Set, and map keywords to controlled subject and location terms (including Library of Congress Subject Headings (LCSH, Thesaurus for Graphic Materials (TGM

  5. A Generic Metadata Editor Supporting System Using Drupal CMS

    Science.gov (United States)

    Pan, J.; Banks, N. G.; Leggott, M.

    2011-12-01

    Metadata handling is a key factor in preserving and reusing scientific data. In recent years, standardized structural metadata has become widely used in Geoscience communities. However, there exist many different standards in Geosciences, such as the current version of the Federal Geographic Data Committee's Content Standard for Digital Geospatial Metadata (FGDC CSDGM), the Ecological Markup Language (EML), the Geography Markup Language (GML), and the emerging ISO 19115 and related standards. In addition, there are many different subsets within the Geoscience subdomain such as the Biological Profile of the FGDC (CSDGM), or for geopolitical regions, such as the European Profile or the North American Profile in the ISO standards. It is therefore desirable to have a software foundation to support metadata creation and editing for multiple standards and profiles, without re-inventing the wheels. We have developed a software module as a generic, flexible software system to do just that: to facilitate the support for multiple metadata standards and profiles. The software consists of a set of modules for the Drupal Content Management System (CMS), with minimal inter-dependencies to other Drupal modules. There are two steps in using the system's metadata functions. First, an administrator can use the system to design a user form, based on an XML schema and its instances. The form definition is named and stored in the Drupal database as a XML blob content. Second, users in an editor role can then use the persisted XML definition to render an actual metadata entry form, for creating or editing a metadata record. Behind the scenes, the form definition XML is transformed into a PHP array, which is then rendered via Drupal Form API. When the form is submitted the posted values are used to modify a metadata record. Drupal hooks can be used to perform custom processing on metadata record before and after submission. It is trivial to store the metadata record as an actual XML file

  6. [Population dynamics of ground carabid beetles and spiders in a wheat field along the wheat-alfalfa interface and their response to alfalfa mowing].

    Science.gov (United States)

    Liu, Wen-Hui; Hu, Yi-Jun; Hu, Wen-Chao; Hong, Bo; Guan, Xiao-Qing; Ma, Shi-Yu; He, Da-Han

    2014-09-01

    Taking the wheat-alfalfa and wheat-wheat interfaces as model systems, sampling points were set by the method of pitfall trapping in the wheat field at the distances of 3 m, 6 m, 9 m, 12 m, 15 m, 18 m, 21 m, 24 m, and 27 m from the interface. The species composition and abundance of ground carabid beetles and spiders captured in pitfalls were investigated. The results showed that, to some extent there was an edge effect on species diversity and abundance of ground carabid beetles and spiders along the two interfaces. A marked edge effect was observed between 15 m and 18 m along the alfalfa-wheat interface, while no edge effect was found at a distance over 20 m. The edge effect along the wheat-wheat interface was weaker in comparison to the alfalfa-wheat interface. Alfalfa mowing resulted in the migration of a large number of ground carabid beetles and spiders to the adjacent wheat filed. During ten days since mowing, both species and abundance of ground carabid beetles and spiders increased in wheat filed within the distance of 20 m along the alfalfa-wheat interface. The spatial distribution of species diversity of ground beetles and spiders, together with the population abundance of the dominant Chlaenius pallipes and Pardosa astrigera, were depicted, which could directly indicate the migrating process of natural enemy from alfalfa to wheat field. PMID:25757322

  7. The Benefits and Future of Standards: Metadata and Beyond

    Science.gov (United States)

    Stracke, Christian M.

    This article discusses the benefits and future of standards and presents the generic multi-dimensional Reference Model. First the importance and the tasks of interoperability as well as quality development and their relationship are analyzed. Especially in e-Learning their connection and interdependence is evident: Interoperability is one basic requirement for quality development. In this paper, it is shown how standards and specifications are supporting these crucial issues. The upcoming ISO metadata standard MLR (Metadata for Learning Resource) will be introduced and used as example for identifying the requirements and needs for future standardization. In conclusion a vision of the challenges and potentials for e-Learning standardization is outlined.

  8. Research and establishment of enterprise quality metadata standard

    Institute of Scientific and Technical Information of China (English)

    Jie LI; Genbao ZHANG; Han SONG

    2008-01-01

    Enabling quality managers to utilize and manage quality data efficiently under modern quality management circumstances is a primary issue for improving enterprise quality management. A concept of quality metadata is proposed in this paper, which can help quality managers gain a deeper understanding of various features of quality data and establish a more stable foundation for further use and management of such data. The procedure of establishing quality meta-data standards is emphasized in the paper, and the content structure and description scheme are given. Finally, a summary is made and future work is prospected.

  9. Advances in alfalfa mosaic virus-mediated expression of anthrax antigen in planta.

    Science.gov (United States)

    Brodzik, R; Bandurska, K; Deka, D; Golovkin, M; Koprowski, H

    2005-12-16

    Plant viruses show great potential for production of pharmaceuticals in plants. Such viruses can harbor a small antigenic peptide(s) as a part of their coat proteins (CP) and elicit an antigen-specific immune response. Here, we report the high yield and consistency in production of recombinant alfalfa mosaic virus (AlMV) particles for specific presentation of the small loop 15 amino acid epitope from domain-4 of the Bacillus anthracis protective antigen (PA-D4s). The epitope was inserted immediately after the first 25 N-terminal amino acids of AlMV CP to retain genome activation and binding of CP to viral RNAs. Recombinant AlMV particles were efficiently produced in tobacco, easily purified for immunological analysis, and exhibited extended stability and systemic proliferation in planta. Intraperitional injections of mice with recombinant plant virus particles harboring the PA-D4s epitope elicited a distinct immune response. Western blotting and ELISA analysis showed that sera from immunized mice recognized both native PA antigen and the AlMV CP. PMID:16236249

  10. Advances in alfalfa mosaic virus-mediated expression of anthrax antigen in planta

    International Nuclear Information System (INIS)

    Plant viruses show great potential for production of pharmaceuticals in plants. Such viruses can harbor a small antigenic peptide(s) as a part of their coat proteins (CP) and elicit an antigen-specific immune response. Here, we report the high yield and consistency in production of recombinant alfalfa mosaic virus (AlMV) particles for specific presentation of the small loop 15 amino acid epitope from domain-4 of the Bacillus anthracis protective antigen (PA-D4s). The epitope was inserted immediately after the first 25 N-terminal amino acids of AlMV CP to retain genome activation and binding of CP to viral RNAs. Recombinant AlMV particles were efficiently produced in tobacco, easily purified for immunological analysis, and exhibited extended stability and systemic proliferation in planta. Intraperitional injections of mice with recombinant plant virus particles harboring the PA-D4s epitope elicited a distinct immune response. Western blotting and ELISA analysis showed that sera from immunized mice recognized both native PA antigen and the AlMV CP

  11. A novel framework for assessing metadata quality in epidemiological and public health research settings

    Science.gov (United States)

    McMahon, Christiana; Denaxas, Spiros

    2016-01-01

    Metadata are critical in epidemiological and public health research. However, a lack of biomedical metadata quality frameworks and limited awareness of the implications of poor quality metadata renders data analyses problematic. In this study, we created and evaluated a novel framework to assess metadata quality of epidemiological and public health research datasets. We performed a literature review and surveyed stakeholders to enhance our understanding of biomedical metadata quality assessment. The review identified 11 studies and nine quality dimensions; none of which were specifically aimed at biomedical metadata. 96 individuals completed the survey; of those who submitted data, most only assessed metadata quality sometimes, and eight did not at all. Our framework has four sections: a) general information; b) tools and technologies; c) usability; and d) management and curation. We evaluated the framework using three test cases and sought expert feedback. The framework can assess biomedical metadata quality systematically and robustly. PMID:27570670

  12. A novel framework for assessing metadata quality in epidemiological and public health research settings.

    Science.gov (United States)

    McMahon, Christiana; Denaxas, Spiros

    2016-01-01

    Metadata are critical in epidemiological and public health research. However, a lack of biomedical metadata quality frameworks and limited awareness of the implications of poor quality metadata renders data analyses problematic. In this study, we created and evaluated a novel framework to assess metadata quality of epidemiological and public health research datasets. We performed a literature review and surveyed stakeholders to enhance our understanding of biomedical metadata quality assessment. The review identified 11 studies and nine quality dimensions; none of which were specifically aimed at biomedical metadata. 96 individuals completed the survey; of those who submitted data, most only assessed metadata quality sometimes, and eight did not at all. Our framework has four sections: a) general information; b) tools and technologies; c) usability; and d) management and curation. We evaluated the framework using three test cases and sought expert feedback. The framework can assess biomedical metadata quality systematically and robustly. PMID:27570670

  13. Linked data for libraries, archives and museums how to clean, link and publish your metadata

    CERN Document Server

    Hooland, Seth van

    2014-01-01

    This highly practical handbook teaches you how to unlock the value of your existing metadata through cleaning, reconciliation, enrichment and linking and how to streamline the process of new metadata creation. Libraries, archives and museums are facing up to the challenge of providing access to fast growing collections whilst managing cuts to budgets. Key to this is the creation, linking and publishing of good quality metadata as Linked Data that will allow their collections to be discovered, accessed and disseminated in a sustainable manner. This highly practical handbook teaches you how to unlock the value of your existing metadata through cleaning, reconciliation, enrichment and linking and how to streamline the process of new metadata creation. Metadata experts Seth van Hooland and Ruben Verborgh introduce the key concepts of metadata standards and Linked Data and how they can be practically applied to existing metadata, giving readers the tools and understanding to achieve maximum results with limited re...

  14. Study on the use of metadata for digital learning objects in university institutional repositories (MODERI)

    OpenAIRE

    Bueno-de-la-Fuente, Gema; Hernández Pérez, Antonio; Rodríguez Mateos, David; Méndez Rodríguez, Eva María; Martín-Galán, Bonifacio

    2009-01-01

    Metadata is a core issue for the creation of repositories. Different institutional repositories have chosen and use different metadata models, elements and values for describing the range of digital objects they store. Thus, this paper analyzes the current use of metadata describing those Learning Objects that some open higher educational institutions' repositories include in their collections. The goal of this work is to identify and analyze the different metadata models being used to descri...

  15. Fungicide tests on adult alfalfa leafcutting bees (Hymenoptera: Megachilidae).

    Science.gov (United States)

    Huntzinger, C I; James, R R; Bosch, J; Kemp, W P

    2008-08-01

    Chalkbrood is a serious disease of alfalfa leafcutting bee Megachile rotundata (F.) (Hymenoptera: Megachilidae) larvae, causing upward of 20% infection in the field. The causative agent is the fungus Ascosphaera aggregata. This bee is used extensively for alfalfa seed pollination in the United States. Using laboratory bioassays, we previously demonstrated that fungicides can reduce chalkbrood levels in the larvae. Here, we evaluate the toxicity of four fungicides, Benlate, Captan, Orbit, and Rovral, to adult bees by using three different bioassays. In the first test, fungicides were applied to bees' thoraces. In the second test, mimicking foliage residue, a piece of filter paper soaked in fungicide was placed on the bottom of a container of bees. The third test evaluated oral toxicity by incorporating fungicides into a sugar-water solution that was fed to the bees. The filter paper test did not discriminate among the fungicides well, and the oral test resulted in the greatest mortality. Toxicity to males was greater than to females. The use of fungicides for chalkbrood control is a logical choice, but caution should be used in how they are applied in the presence of bees. PMID:18767714

  16. The Undergraduate ALFALFA Team: Outcomes for Over 250 Undergraduate Participants

    Science.gov (United States)

    Troischt, Parker; Koopmann, Rebecca A.; Haynes, Martha P.; ALFALFA Team

    2016-01-01

    The NSF-sponsored Undergraduate ALFALFA (Arecibo Legacy Fast ALFA) Team (UAT) is a consortium of 19 institutions founded to promote undergraduate research and faculty development within the extragalactic ALFALFA HI blind survey project and follow-up programs. In this talk we present outcomes for the more than 250 undergraduate students who have who have participated in the program during the 8 years of funding. 40% of these students have been women and members of underrepresented groups. To date 148 undergraduate students have attended annual workshops at Arecibo Observatory, interacting with faculty, graduate students, their peers, and Arecibo staff in lectures, group activities, tours, and observing runs. Team faculty have supervised 159 summer research projects and 120 academic year (e.g., senior thesis) projects. 68 students have traveled to Arecibo Observatory for observing runs and 55 have presented their results at national meetings such as the AAS. Through participation in the UAT, students are made aware of career paths they may not have previously considered. More than 90% of alumni are attending graduate school and/or pursuing a career in STEM. 42% of those pursuing graduate degrees in Physics or Astronomy are women. This work has been supported by NSF grants AST-0724918/0902211, AST-075267/0903394, AST-0725380, and AST-1211005

  17. Gas, Stars and Star Formation in ALFALFA Dwarf Galaxies

    CERN Document Server

    Huang, S; Giovanelli, R; Brinchmann, J; Stierwalt, S; Neff, S G

    2012-01-01

    We examine the global properties of the stellar and HI components of 229 low HI mass dwarf galaxies extracted from the ALFALFA survey, including a complete sample of 176 galaxies with HI masses < 10^{7.7} M_sun and HI line widths < 80 km s^{-1}. SDSS data are combined with photometric properties derived from GALEX to derive stellar masses (M_*) and star formation rates (SFRs) by fitting their UV-optical spectral energy distributions (SEDs). In optical images, many of the ALFALFA dwarfs are faint and of low surface brightness; only 56% of those within the SDSS footprint have a counterpart in the SDSS spectroscopic survey. A large fraction of the dwarfs have high specific star formation rates (SSFRs) and estimates of their SFRs and M_* obtained by SED fitting are systematically smaller than ones derived via standard formulae assuming a constant SFR. The increased dispersion of the SSFR distribution at M_* < 10^8 M_sun is driven by a set of dwarf galaxies that have low gas fractions and SSFRs; some of t...

  18. Metadata squared: enhancing its usability for volunteered geographic information and the GeoWeb

    Science.gov (United States)

    Poore, Barbara S.; Wolf, Eric B.; Sui, Daniel Z.; Elwood, Sarah; Goodchild, Michael F.

    2013-01-01

    The Internet has brought many changes to the way geographic information is created and shared. One aspect that has not changed is metadata. Static spatial data quality descriptions were standardized in the mid-1990s and cannot accommodate the current climate of data creation where nonexperts are using mobile phones and other location-based devices on a continuous basis to contribute data to Internet mapping platforms. The usability of standard geospatial metadata is being questioned by academics and neogeographers alike. This chapter analyzes current discussions of metadata to demonstrate how the media shift that is occurring has affected requirements for metadata. Two case studies of metadata use are presented—online sharing of environmental information through a regional spatial data infrastructure in the early 2000s, and new types of metadata that are being used today in OpenStreetMap, a map of the world created entirely by volunteers. Changes in metadata requirements are examined for usability, the ease with which metadata supports coproduction of data by communities of users, how metadata enhances findability, and how the relationship between metadata and data has changed. We argue that traditional metadata associated with spatial data infrastructures is inadequate and suggest several research avenues to make this type of metadata more interactive and effective in the GeoWeb.

  19. Turning Data into Information: Assessing and Reporting GIS Metadata Integrity Using Integrated Computing Technologies

    Science.gov (United States)

    Mulrooney, Timothy J.

    2009-01-01

    A Geographic Information System (GIS) serves as the tangible and intangible means by which spatially related phenomena can be created, analyzed and rendered. GIS metadata serves as the formal framework to catalog information about a GIS data set. Metadata is independent of the encoded spatial and attribute information. GIS metadata is a subset of…

  20. Networked Information Discovery and Retrieval for Educational Materials on the Internet: Metadata Development, Deployment, and Evolution.

    Science.gov (United States)

    Sutton, Stuart A.; Lankes, R. David; Small, Ruth V.; Eisenberg, Michael B.

    1998-01-01

    Describes the Gateway to Educational Materials Project (GEM) at the ERIC Clearinghouse on Information and Technology at Syracuse University. Explicates the GEM metadata element set and how GEM metadata is created. Discusses the syntactic binding of GEM metadata and the mechanisms for its distribution. Concludes with a brief discussion of existing…

  1. Quality assurance for digital learning object repositories: issues for the metadata creation process

    Directory of Open Access Journals (Sweden)

    Sarah Currier

    2004-12-01

    Full Text Available Metadata enables users to find the resources they require, therefore it is an important component of any digital learning object repository. Much work has already been done within the learning technology community to assure metadata quality, focused on the development of metadata standards, specifications and vocabularies and their implementation within repositories. The metadata creation process has thus far been largely overlooked. There has been an assumption that metadata creation will be straightforward and that where machines cannot generate metadata effectively, authors of learning materials will be the most appropriate metadata creators. However, repositories are reporting difficulties in obtaining good quality metadata from their contributors, and it is becoming apparent that the issue of metadata creation warrants attention. This paper surveys the growing body of evidence, including three UK-based case studies, scopes the issues surrounding human-generated metadata creation and identifies questions for further investigation. Collaborative creation of metadata by resource authors and metadata specialists, and the design of tools and processes, are emerging as key areas for deeper research. Research is also needed into how end users will search learning object repositories.

  2. Metadata management for high content screening in OMERO.

    Science.gov (United States)

    Li, Simon; Besson, Sébastien; Blackburn, Colin; Carroll, Mark; Ferguson, Richard K; Flynn, Helen; Gillen, Kenneth; Leigh, Roger; Lindner, Dominik; Linkert, Melissa; Moore, William J; Ramalingam, Balaji; Rozbicki, Emil; Rustici, Gabriella; Tarkowska, Aleksandra; Walczysko, Petr; Williams, Eleanor; Allan, Chris; Burel, Jean-Marie; Moore, Josh; Swedlow, Jason R

    2016-03-01

    High content screening (HCS) experiments create a classic data management challenge-multiple, large sets of heterogeneous structured and unstructured data, that must be integrated and linked to produce a set of "final" results. These different data include images, reagents, protocols, analytic output, and phenotypes, all of which must be stored, linked and made accessible for users, scientists, collaborators and where appropriate the wider community. The OME Consortium has built several open source tools for managing, linking and sharing these different types of data. The OME Data Model is a metadata specification that supports the image data and metadata recorded in HCS experiments. Bio-Formats is a Java library that reads recorded image data and metadata and includes support for several HCS screening systems. OMERO is an enterprise data management application that integrates image data, experimental and analytic metadata and makes them accessible for visualization, mining, sharing and downstream analysis. We discuss how Bio-Formats and OMERO handle these different data types, and how they can be used to integrate, link and share HCS experiments in facilities and public data repositories. OME specifications and software are open source and are available at https://www.openmicroscopy.org. PMID:26476368

  3. Metadata Schema Used in OCLC Sampled Web Pages

    Directory of Open Access Journals (Sweden)

    Fei Yu

    2005-12-01

    Full Text Available The tremendous growth of Web resources has made information organization and retrieval more and more difficult. As one approach to this problem, metadata schemas have been developed to characterize Web resources. However, many questions have been raised about the use of metadata schemas such as which metadata schemas have been used on the Web? How did they describe Web accessible information? What is the distribution of these metadata schemas among Web pages? Do certain schemas dominate the others? To address these issues, this study analyzed 16,383 Web pages with meta tags extracted from 200,000 OCLC sampled Web pages in 2000. It found that only 8.19% Web pages used meta tags; description tags, keyword tags, and Dublin Core tags were the only three schemas used in the Web pages. This article revealed the use of meta tags in terms of their function distribution, syntax characteristics, granularity of the Web pages, and the length distribution and word number distribution of both description and keywords tags.

  4. Big Earth Data Initiative: Metadata Improvement: Case Studies

    Science.gov (United States)

    Kozimor, John; Habermann, Ted; Farley, John

    2016-01-01

    Big Earth Data Initiative (BEDI) The Big Earth Data Initiative (BEDI) invests in standardizing and optimizing the collection, management and delivery of U.S. Government's civil Earth observation data to improve discovery, access use, and understanding of Earth observations by the broader user community. Complete and consistent standard metadata helps address all three goals.

  5. Competence Based Educational Metadata for Supporting Lifelong Competence Development Programmes

    NARCIS (Netherlands)

    Sampson, Demetrios; Fytros, Demetrios

    2008-01-01

    Sampson, D., & Fytros, D. (2008). Competence Based Educational Metadata for Supporting Lifelong Competence Development Programmes. In P. Diaz, Kinshuk, I. Aedo & E. Mora (Eds.), Proceedings of the 8th IEEE International Conference on Advanced Learning Technologies (ICALT 2008), pp. 288-292. July, 1-

  6. ATLAS Metadata Infrastructure Evolution for Run 2 and Beyond

    Science.gov (United States)

    van Gemmeren, P.; Cranshaw, J.; Malon, D.; Vaniachine, A.

    2015-12-01

    ATLAS developed and employed for Run 1 of the Large Hadron Collider a sophisticated infrastructure for metadata handling in event processing jobs. This infrastructure profits from a rich feature set provided by the ATLAS execution control framework, including standardized interfaces and invocation mechanisms for tools and services, segregation of transient data stores with concomitant object lifetime management, and mechanisms for handling occurrences asynchronous to the control framework's state machine transitions. This metadata infrastructure is evolving and being extended for Run 2 to allow its use and reuse in downstream physics analyses, analyses that may or may not utilize the ATLAS control framework. At the same time, multiprocessing versions of the control framework and the requirements of future multithreaded frameworks are leading to redesign of components that use an incident-handling approach to asynchrony. The increased use of scatter-gather architectures, both local and distributed, requires further enhancement of metadata infrastructure in order to ensure semantic coherence and robust bookkeeping. This paper describes the evolution of ATLAS metadata infrastructure for Run 2 and beyond, including the transition to dual-use tools—tools that can operate inside or outside the ATLAS control framework—and the implications thereof. It further examines how the design of this infrastructure is changing to accommodate the requirements of future frameworks and emerging event processing architectures.

  7. Automatic Extraction of Metadata from Scientific Publications for CRIS Systems

    Science.gov (United States)

    Kovacevic, Aleksandar; Ivanovic, Dragan; Milosavljevic, Branko; Konjovic, Zora; Surla, Dusan

    2011-01-01

    Purpose: The aim of this paper is to develop a system for automatic extraction of metadata from scientific papers in PDF format for the information system for monitoring the scientific research activity of the University of Novi Sad (CRIS UNS). Design/methodology/approach: The system is based on machine learning and performs automatic extraction…

  8. A Pioneering Spirit: Using Administrative Metadata to Manage Electronic Resources

    OpenAIRE

    Medeiros, Norm

    2003-01-01

    This article describes administrative metadata, and its use in managing electronic resources. The focus of the article is an interview with Tim Jewell, Head of Collection Management Services at the University of Washington and Adam Chandler, Information Technology Librarian at Cornell University.

  9. Web Video Mining: Metadata Predictive Analysis using Classification Techniques

    Directory of Open Access Journals (Sweden)

    Siddu P. Algur

    2016-02-01

    Full Text Available Now a days, the Data Engineering becoming emerging trend to discover knowledge from web audiovisual data such as- YouTube videos, Yahoo Screen, Face Book videos etc. Different categories of web video are being shared on such social websites and are being used by the billions of users all over the world. The uploaded web videos will have different kind of metadata as attribute information of the video data. The metadata attributes defines the contents and features/characteristics of the web videos conceptually. Hence, accomplishing web video mining by extracting features of web videos in terms of metadata is a challenging task. In this work, effective attempts are made to classify and predict the metadata features of web videos such as length of the web videos, number of comments of the web videos, ratings information and view counts of the web videos using data mining algorithms such as Decision tree J48 and navie Bayesian algorithms as a part of web video mining. The results of Decision tree J48 and navie Bayesian classification models are analyzed and compared as a step in the process of knowledge discovery from web videos.

  10. Metadata Harvesting in Regional Digital Libraries in the PIONIER Network

    Science.gov (United States)

    Mazurek, Cezary; Stroinski, Maciej; Werla, Marcin; Weglarz, Jan

    2006-01-01

    Purpose: The paper aims to present the concept of the functionality of metadata harvesting for regional digital libraries, based on the OAI-PMH protocol. This functionality is a part of regional digital libraries platform created in Poland. The platform was required to reach one of main objectives of the Polish PIONIER Programme--to enrich the…

  11. Training and Best Practice Guidelines: Implications for Metadata Creation

    Science.gov (United States)

    Chuttur, Mohammad Y.

    2012-01-01

    In response to the rapid development of digital libraries over the past decade, researchers have focused on the use of metadata as an effective means to support resource discovery within online repositories. With the increasing involvement of libraries in digitization projects and the growing number of institutional repositories, it is anticipated…

  12. Discovering Physical Samples Through Identifiers, Metadata, and Brokering

    Science.gov (United States)

    Arctur, D. K.; Hills, D. J.; Jenkyns, R.

    2015-12-01

    Physical samples, particularly in the geosciences, are key to understanding the Earth system, its history, and its evolution. Our record of the Earth as captured by physical samples is difficult to explain and mine for understanding, due to incomplete, disconnected, and evolving metadata content. This is further complicated by differing ways of classifying, cataloguing, publishing, and searching the metadata, especially when specimens do not fit neatly into a single domain—for example, fossils cross disciplinary boundaries (mineral and biological). Sometimes even the fundamental classification systems evolve, such as the geological time scale, triggering daunting processes to update existing specimen databases. Increasingly, we need to consider ways of leveraging permanent, unique identifiers, as well as advancements in metadata publishing that link digital records with physical samples in a robust, adaptive way. An NSF EarthCube Research Coordination Network (RCN) called the Internet of Samples (iSamples) is now working to bridge the metadata schemas for biological and geological domains. We are leveraging the International Geo Sample Number (IGSN) that provides a versatile system of registering physical samples, and working to harmonize this with the DataCite schema for Digital Object Identifiers (DOI). A brokering approach for linking disparate catalogues and classification systems could help scale discovery and access to the many large collections now being managed (sometimes millions of specimens per collection). This presentation is about our community building efforts, research directions, and insights to date.

  13. Metadata management for high content screening in OMERO

    Science.gov (United States)

    Li, Simon; Besson, Sébastien; Blackburn, Colin; Carroll, Mark; Ferguson, Richard K.; Flynn, Helen; Gillen, Kenneth; Leigh, Roger; Lindner, Dominik; Linkert, Melissa; Moore, William J.; Ramalingam, Balaji; Rozbicki, Emil; Rustici, Gabriella; Tarkowska, Aleksandra; Walczysko, Petr; Williams, Eleanor; Allan, Chris; Burel, Jean-Marie; Moore, Josh; Swedlow, Jason R.

    2016-01-01

    High content screening (HCS) experiments create a classic data management challenge—multiple, large sets of heterogeneous structured and unstructured data, that must be integrated and linked to produce a set of “final” results. These different data include images, reagents, protocols, analytic output, and phenotypes, all of which must be stored, linked and made accessible for users, scientists, collaborators and where appropriate the wider community. The OME Consortium has built several open source tools for managing, linking and sharing these different types of data. The OME Data Model is a metadata specification that supports the image data and metadata recorded in HCS experiments. Bio-Formats is a Java library that reads recorded image data and metadata and includes support for several HCS screening systems. OMERO is an enterprise data management application that integrates image data, experimental and analytic metadata and makes them accessible for visualization, mining, sharing and downstream analysis. We discuss how Bio-Formats and OMERO handle these different data types, and how they can be used to integrate, link and share HCS experiments in facilities and public data repositories. OME specifications and software are open source and are available at https://www.openmicroscopy.org. PMID:26476368

  14. ONEMercury: Towards Automatic Annotation of Earth Science Metadata

    Science.gov (United States)

    Tuarob, S.; Pouchard, L. C.; Noy, N.; Horsburgh, J. S.; Palanisamy, G.

    2012-12-01

    Earth sciences have become more data-intensive, requiring access to heterogeneous data collected from multiple places, times, and thematic scales. For example, research on climate change may involve exploring and analyzing observational data such as the migration of animals and temperature shifts across the earth, as well as various model-observation inter-comparison studies. Recently, DataONE, a federated data network built to facilitate access to and preservation of environmental and ecological data, has come to exist. ONEMercury has recently been implemented as part of the DataONE project to serve as a portal for discovering and accessing environmental and observational data across the globe. ONEMercury harvests metadata from the data hosted by multiple data repositories and makes it searchable via a common search interface built upon cutting edge search engine technology, allowing users to interact with the system, intelligently filter the search results on the fly, and fetch the data from distributed data sources. Linking data from heterogeneous sources always has a cost. A problem that ONEMercury faces is the different levels of annotation in the harvested metadata records. Poorly annotated records tend to be missed during the search process as they lack meaningful keywords. Furthermore, such records would not be compatible with the advanced search functionality offered by ONEMercury as the interface requires a metadata record be semantically annotated. The explosion of the number of metadata records harvested from an increasing number of data repositories makes it impossible to annotate the harvested records manually, urging the need for a tool capable of automatically annotating poorly curated metadata records. In this paper, we propose a topic-model (TM) based approach for automatic metadata annotation. Our approach mines topics in the set of well annotated records and suggests keywords for poorly annotated records based on topic similarity. We utilize the

  15. Study on Alfalfa Yield Improved by New Rare Earth Materials for Agriculture

    Institute of Scientific and Technical Information of China (English)

    Fan Tianwen; Abudukahar; Cui Yingguo; Peng Jianzhang; Wang Jiachen

    2004-01-01

    New rare earth(RE) materials for agriculture including RE entire nutrition agent, amino acid chelated RE fertilizer, RE phosphate were used to alfalfa production in Grassland Working Station of Yili, Xinjiang Province, and repetition was 3 with 7 treatments.The result shows that by using new RE materials, the average treatment height of alfalfa increases by 12.5% compared with traditional cultural, and the yield increases from 21.8% to 41.6% compared with that of traditional cultural.These results show that the new materials have significant good effect on alfalfa production.

  16. Study in mutation of alfalfa genome DNA due to low energy N+ implantation using RAPD

    International Nuclear Information System (INIS)

    After implanted by various dosage N+ beams, germination rate of alfalfa seeds appears to be saddle line with dosage increasing. The authors have studied in mutation of genome DNA due to low energy N+ implantation, and concluded that 30 differential DNA fragments have been amplified by 8 primers (S41, S42, S45, S46, S50, S52, S56, S58) in 100 primers, moreover, number of differential DNA fragments between CK and treatments increases with dosage. Consequently, low energy ion implantation can cause mutation of alfalfa genome DNA. The more dosage it is, the more mutation alfalfa will be

  17. METADATA DRIVEN EFFICIENT KEY GENERATION AND DISTRIBUTION IN CLOUD SECURITY

    Directory of Open Access Journals (Sweden)

    R. Anitha

    2014-01-01

    Full Text Available With rapid development of cloud computing to a greater extent IT industries outsource their sensitive data at cloud data storage location. To keep the stored data confidential against untrusted cloud service providers, a natural way is to store only encrypted data in the cloud severs and providing an efficient access control mechanism using a competent cipher key-Cmxn, which is becoming a promising cryptographic solution. In this proposed model the cipher key is generated based on attributes of metadata. The key problems of this approach includes, the generation of cipher key-Cmxn and establishing an access control mechanism for the encrypted data using cipher key, where keys cannot be revoked without the involvement of data owner and the Metadata Data Server (MDS, hence makes data owner feels comfortable about the data stored. From this study, we propose a novel Metadata driven efficient key generation and distribution policies for cloud data security system by exploiting the characteristic of the metadata stored. Our design enforces security by providing two novel features. 1. Generation of Cipher key-Cmxn using modified feistel network, which holds good for the avalanche effect as each round of the feistel function, depends on the previous round. 2. A novel key distribution policy is designed where the encryption and decryption keys cannot be compromised without the involvement of data owner and the Metadata Data Server (MDS, hence makes data owner comfortable about the data stored. We have implemented a security model that incorporates our ideas and evaluated the performance and scalability of the secured model.

  18. A Solr Powered Architecture for Scientific Metadata Search Applications

    Science.gov (United States)

    Reed, S. A.; Billingsley, B. W.; Harper, D.; Kovarik, J.; Brandt, M.

    2014-12-01

    Discovering and obtaining resources for scientific research is increasingly difficult but Open Source tools have been implemented to provide inexpensive solutions for scientific metadata search applications. Common practices used in modern web applications can improve the quality of scientific data as well as increase availability to a wider audience while reducing costs of maintenance. Motivated to improve discovery and access of scientific metadata hosted at NSIDC and the need to aggregate many areas of arctic research, the National Snow and Ice Data Center (NSIDC) and Advanced Cooperative Arctic Data and Information Service (ACADIS) contributed to a shared codebase used by the NSIDC Search and Arctic Data Explorer (ADE) portals. We implemented the NSIDC Search and ADE to improve search and discovery of scientific metadata in many areas of cryospheric research. All parts of the applications are available free and open for reuse in other applications and portals. We have applied common techniques that are widely used by search applications around the web and with the goal of providing quick and easy access to scientific metadata. We adopted keyword search auto-suggest which provides a dynamic list of terms and phrases that closely match characters as the user types. Facet queries are another technique we have implemented to filter results based on aspects of the data like the instrument used or temporal duration of the data set. Service APIs provide a layer between the interface and the database and are shared between the NSIDC Search and ACADIS ADE interfaces. We also implemented a shared data store between both portals using Apache Solr (an Open Source search engine platform that stores and indexes XML documents) and leverage many powerful features including geospatial search and faceting. This presentation will discuss the application architecture as well as tools and techniques used to enhance search and discovery of scientific metadata.

  19. From Findability to Awareness: Metadata in Music and Technology Enhanced Learning (Vinden en beseffen: Metadata in muziek en E-learning)

    OpenAIRE

    Govaerts, Sten

    2012-01-01

    Nowadays, a vast amount of content is available to, and can be created by anyone, anywhere. To make this content available, search services make use of the content itself, the context in which content is used or metadata that describes what the content is about and how to locate, retrieve and use the content. Based on metadata, content can be organised and searched for more efficiently. Repositories are databases that store metadata and potentially content. Compared to search engines, reposit...

  20. The Ontological Perspectives of the Semantic Web and the Metadata Harvesting Protocol: Applications of Metadata for Improving Web Search.

    Science.gov (United States)

    Fast, Karl V.; Campbell, D. Grant

    2001-01-01

    Compares the implied ontological frameworks of the Open Archives Initiative Protocol for Metadata Harvesting and the World Wide Web Consortium's Semantic Web. Discusses current search engine technology, semantic markup, indexing principles of special libraries and online databases, and componentization and the distinction between data and…

  1. Cultivation and identification of the transgenic alfalfa containing Echinococcus granulosus Eg95 gene%细粒棘球绦虫转Eg95基因苜蓿疫苗的培育及鉴定

    Institute of Scientific and Technical Information of China (English)

    叶艳菊; 李文桂; 周辉

    2009-01-01

    Objective To cultivate and identify the transgenic affalfa containing Echinococcus granulosus Eg95 gene. Methods The alfalfa plants were transformed by co-cultivating alfalfa cotyledons via recombinant Agrobacterium tumefaciens LBA4404 harboring pBI-Eg95. The transgenic alfalfa explants were selected by kanamyein after calli formation, shoots and roots regeneration in the selective medium, the seedlings of transgenic plants were obtained which were finally transplanted into pots containing nutrient soil. After 2-3 months growth, the complete transgenic alfalfa plants containing Echinococcus granulosus Eg95 gene were obtained. To identify the transgenic alfalfa plants, the total DNA, RNA and leaf protein were extracted from fresh leaf tissue of the transgenic alfalfa plants and confirmed by PCR, RT-PCR, SDS-PAGE and Western blot assay. Results A specific band around 471 bp was amplified by PCR with total DNA, and the same band was obtained by RT-PCR with total RNA, which confirmed that the Eg95 gene was stably integrated into the transformed alfalfa genome. SDS-PAGE analysis showed that the relative molecular mass(Mr) of the expressed protein was about 16.5×103, consistent with the Eg95 protein, and the level of Eg95 expression was up to 0.06% of total soluble leaf protein by Bio-Rad Quantity one assay. Western blot verified the expressed protein was reactive with the sera of mice infected with Echinococcus granulosus. Conclusion The transgenic alfalfa plants containing Echinococcus granulosus Eg95 gene are successfully cultivated.%目的 培育并鉴定细粒棘球绦虫转Eg95基因苜蓿疫苗.方法 利用转pBI-Eg95质粒的根癌农杆菌LBA4404株介导的苜蓿子叶浸染法,将Eg95基因导人紫花苜蓿基因组,转Eg95基因苜蓿外植体在含有卡那霉素的选择培养基上经愈伤、出芽和生根阶段生长出小苗,最后移栽到装有营养土的花盆中,生长2~3个月,获得完整的转Eg95基因苜蓿疫苗.提取转Eg95基因苜

  2. Semantic Web Meta-data for e-Learning : Some Architectural Guidelines

    OpenAIRE

    Nilsson, Mikael; Palmér, Matthias

    2002-01-01

    Meta-data is the fundamental building block of the Semantic Web. However, the meta-data concept is too loosely defined to provide architectural guidelines for its use. This paper analyzes important uses of meta-data in the e-learning domain, from a pedagogical and philosophical point of view, and abstracts from them a set of fundamental architectural requirements for Semantic Web meta-data. It also describes some flexible generic techniques for working with meta-data, following these requirem...

  3. PENINGKATAN PRODUKSI DAN KECERNAAN BAHAN KERING ALFALFA DENGAN PEMUPUKAN FOSFAT

    Directory of Open Access Journals (Sweden)

    - Sunarni

    2014-06-01

    Full Text Available Alfalfa (Medicago    sativa    L. as one of legume forage crops for ruminant livestock is very sensitive to the phosphorus deficiency. Phosphorus fertilizers have been used widely to overcome those problem. However, the high cost of superphosphate (SP is now focusing attention on cheaper rock phosphate (RP fertilizer. A field experiment was conducted on a latosolic soil (low pH, and low available Bray II extractable P. The objective of the research is to evaluate the effect of phosphorus fertilizer from difference sources on dry matter production, and in    vitro dry matter digestibility of alfalfa. Completely randomized block design with 7 treatments in 3 replicates was used in this field experiment. The treatments were T0 (control, T1 (SP, 100 kg P2O5/ha, T2 (SP, 200 kg P2O5/ha, T3 (SP, 300 kg P2O5/ha, T4 (RP, 100 kg P2O5/ha, T5 (RP, 200 kg P2O5/ha, T6 (RP, 300 kg P2O5/ha. Size of each plot was 2 m x 2 m, and fertilized with P fertilizer (SP, RP according to the assigned treatment. All plot received basal fertilizer of urea (50 kg N/ha, KCl (100 kg K2O/ha and poultry manure (2 ton/ha. Medicago    sativa was defoliated on 12 weeks after planting and analyzed for dry matter (DM production and in    vitro DM digestibility. Result showed that DM production significantly influenced by the treatments. Superphosphate fertilization resulted DM production significantly higher compared to control and RP, except on RP 300 kg P2O5/ha was non-significant difference. In    vitro dry matter digestibility (IVDMD of alfalfa was not affected by the treatment. There was non-significant difference in IVDMD between the treatments. Therefore, RP (300 kg P2O5/ha could replace SP to increased DM production and not affected for IVDMD of Medicago    sativa in acid latosolic soil.

  4. The National Digital Information Infrastructure Preservation Program; Metadata Principles and Practicalities; Challenges for Service Providers when Importing Metadata in Digital Libraries; Integrated and Aggregated Reference Services.

    Science.gov (United States)

    Friedlander, Amy; Duval, Erik; Hodgins, Wayne; Sutton, Stuart; Weibel, Stuart L.; McClelland, Marilyn; McArthur, David; Giersch, Sarah; Geisler, Gary; Hodgkin, Adam

    2002-01-01

    Includes 6 articles that discuss the National Digital Information Infrastructure Preservation Program at the Library of Congress; metadata in digital libraries; integrated reference services on the Web. (LRW)

  5. Alfalfa microsymbionts from different ITS and nodC lineages of Ensifer meliloti and Ensifer medicae symbiovar meliloti establish efficient symbiosis with alfalfa in Spanish acid soils.

    Science.gov (United States)

    Ramírez-Bahena, Martha-Helena; Vargas, Margarita; Martín, María; Tejedor, Carmen; Velázquez, Encarna; Peix, Álvaro

    2015-06-01

    Alfalfa (Medicago sativa L.) is an important crop worldwide whose cropping in acid soils is hampered by the poor nodulation and yield commonly attributed to the sensitivity of its endosymbionts to acid pH. In this work, we isolated several acid-tolerant strains from alfalfa nodules in three acid soils in northwestern Spain. After grouping by RAPD fingerprinting, most strains were identified as Ensifer meliloti and only two strains as Ensifer medicae according to their 16S-23S intergenic spacer (ITS) sequences that allowed the differentiation of two groups within each one of these species. The two ITS groups of E. meliloti and the ITS group I of E. medicae have been previously found in Medicago nodules; however, the group II of E. medicae has been only found to date in Prosopis alba nodules. The analysis of the nodC gene showed that all strains isolated in this study belong to the symbiovar meliloti, grouping with the type strains of E. meliloti or E. medicae, but some harboured nodC gene alleles different from those found to date in alfalfa nodules. The strains of E. medicae belong to the symbiovar meliloti which should be also recognised in this species, although they harboured a nodC allele phylogenetically divergent to those from E. meliloti strains. Microcosm experiments showed that inoculation of alfalfa with selected acid-tolerant strains significantly increased yields in acid soils representing a suitable agricultural practice for alfalfa cropping in these soils. PMID:25586575

  6. Studies on the Alfalfa Growing Effects of Alfalfa Rhizobium%苜蓿根瘤菌剂对紫花苜蓿生长影响研究

    Institute of Scientific and Technical Information of China (English)

    樊川; 杨旭升; 曹亚斌

    2015-01-01

    通过不同剂量苜蓿根瘤菌接种两种紫花苜蓿试验,比较了接种根瘤菌剂对紫花苜蓿生长的影响。试验结果表明:接种苜蓿根瘤菌剂能够提高紫花苜蓿结瘤数量和根瘤重,促进紫花苜蓿的生长发育,增加苜蓿草的产草量。在所试验的接种剂量中,以每 kg 苜蓿种子接种12mL 根瘤菌剂为最佳接种量。%This paper studied the alfalfa growing effects of alfalfa rhizobium by inoculated different amounts.The experimental results showed that inoculating rhizobium can raise the nodulating amount of alfalfa and the weight of nodulations,promoting the growth of alfalfas and augment the productions of alfalfas.Among the different inoculated amounts,the amount of 12ml is the best inoculated amount.

  7. Treating metadata as annotations: separating the content markup from the content

    Directory of Open Access Journals (Sweden)

    Fredrik Paulsson

    2007-11-01

    Full Text Available The use of digital learning resources creates an increasing need for semantic metadata, describing the whole resource, as well as parts of resources. Traditionally, schemas such as Text Encoding Initiative (TEI have been used to add semantic markup for parts of resources. This is not sufficient for use in a ”metadata ecology”, where metadata is distributed, coherent to different Application Profiles, and added by different actors. A new methodology, where metadata is “pointed in” as annotations, using XPointers, and RDF is proposed. A suggestion for how such infrastructure can be implemented, using existing open standards for metadata, and for the web is presented. We argue that such methodology and infrastructure is necessary to realize the decentralized metadata infrastructure needed for a “metadata ecology".

  8. Extending attributes page: a scheme for enhancing the reliability of storage system metadata*

    Institute of Scientific and Technical Information of China (English)

    Juan WANG; Dan FENG; Fang WANG; Cheng-tao LU

    2009-01-01

    In an object-based storage system, a novel scheme named EAP (extending attributes page) is presented to enhance the metadata reliability of the system by adding the user object file information attributes page for each user object and storing the file-related attributes of each user object in object-based storage devices. The EAP scheme requires no additional hardware equipments compared to a general method which uses backup metadata servers to improve the metadata reliability. Leveraging a Markov chain, this paper compares the metadata reliability of the system using the EAP scheme with that using only metadata servers to offer the file metadata service. Our results demonstrate that the EAP scheme can dramatically enhance the reliability of storage system metadata.

  9. The alfalfa leafcutting bee, Megachile rotundata: the world's most intensively managed solitary bee.

    Science.gov (United States)

    Pitts-Singer, Theresa L; Cane, James H

    2011-01-01

    The alfalfa leafcutting bee (ALCB), Megachile rotundata F. (Megachildae), was accidentally introduced into the United States by the 1940s. Nest management of this Eurasian nonsocial pollinator transformed the alfalfa seed industry in North America, tripling seed production. The most common ALCB management practice is the loose cell system, in which cocooned bees are removed from nesting cavities for cleaning and storage. Traits of ALCBs that favored their commercialization include gregarious nesting; use of leaves for lining nests; ready acceptance of affordable, mass-produced nesting materials; alfalfa pollination efficacy; and emergence synchrony with alfalfa bloom. The ALCB became a commercial success because much of its natural history was understood, targeted research was pursued, and producer ingenuity was encouraged. The ALCB presents a model system for commercializing other solitary bees and for advancing new testable hypotheses in diverse biological disciplines. PMID:20809804

  10. Easy synthesis of graphene sheets from alfalfa plants by treatment of nitric acid

    Energy Technology Data Exchange (ETDEWEB)

    Qu, Jiao, E-mail: qujiao@bhu.edu.cn [School of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013 (China); School of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024 (China); Luo, Chunqiu, E-mail: fplj_lcq@163.com [School of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013 (China); Zhang, Qian; Cong, Qiao [School of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013 (China); Yuan, Xing [School of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024 (China)

    2013-04-01

    Highlights: ► An easy method for synthesis of graphene sheets using alfalfa plants was introduced. ► An novelty formation mechanism of graphene sheets using alfalfa plants was proposed. ► This method exploits a new carbon source and provides a novel idea to synthesize graphene sheets. -- Abstract: This letter focuses on synthesis of graphene sheets from alfalfa plants by treatment of nitric acid. The transmission electron microscopy image (TEM) demonstrates that the graphene sheets are agglomerated and overlapped, the energy dispersive spectrum (EDS) indicates that the products are pure, and the Raman spectrum shows the graphene sheets are well graphitized. In addition, the formation mechanism of the graphene sheets from alfalfa plants by treatment nitric acid is discussed. These findings inspire the search for a new strategy for synthesis of graphene sheets from renewable natural products, and the lower cost of this new process and carbon source may facilitate industrial production.

  11. Phosphorylation of alfalfa mosaic virus movement protein in vivo.

    Science.gov (United States)

    Kim, Bong-Suk; Halk, Edward L; Merlo, Donald J; Nelson, Steven E; Loesch-Fries, L Sue

    2014-07-01

    The 32-kDa movement protein, P3, of alfalfa mosaic virus (AMV) is essential for cell-to-cell spread of the virus in plants. P3 shares many properties with other virus movement proteins (MPs); however, it is not known if P3 is posttranslationally modified by phosphorylation, which is important for the function of other MPs. When expressed in Nicotiana tabacum, P3 accumulated primarily in the cell walls of older leaves or in the cytosol of younger leaves. When expressed in Pischia pastoris, P3 accumulated primarily in a soluble form. Metabolic labeling indicated that a portion of P3 was phosphorylated in both tobacco and yeast, suggesting that phosphorylation regulates the function of this protein as it does for other virus MPs. PMID:24435161

  12. Arabidopsis thaliana is an asymptomatic host of Alfalfa mosaic virus.

    Science.gov (United States)

    Balasubramaniam, Muthukumar; Ibrahim, Amr; Kim, Bong-Suk; Loesch-Fries, L Sue

    2006-11-01

    The susceptibility of Arabidopsis thaliana ecotypes to infection by Alfalfa mosaic virus (AMV) was evaluated. Thirty-nine ecotypes supported both local and systemic infection, 26 ecotypes supported only local infection, and three ecotypes could not be infected. No obvious symptoms characteristic of virus infection developed on the susceptible ecotypes under standard conditions of culture. Parameters of AMV infection were characterized in ecotype Col-0, which supported systemic infection and accumulated higher levels of AMV than the symptomatic host Nicotiana tabacum. The formation of infectious AMV particles in infected Col-0 was confirmed by infectivity assays on a hypersensitive host and by electron microscopy of purified virions. Replication and transcription of AMV was confirmed by de novo synthesis of AMV subgenomic RNA in Col-0 protoplasts transfected with AMV RNA or plasmids harboring AMV cDNAs. PMID:16875753

  13. HI Gas in Early Type Galaxies as Measured by ALFALFA

    Science.gov (United States)

    Collins, Wendy; Morrison, Ryan; Green, Jarred; Raskin, Mark; Crawford, Connor; Bomer-Lawson, August; Hannan, Joshua; Crone-Odekon, Mary; ALFALFA Team

    2016-01-01

    We present the HI content of 1580 early type galaxies (ETGs) in a total sample of 7747 galaxies that have HI measurements or upper limits from the ALFALFA survey. We find a significant correlation between HI content and local density, with HI detections almost exclusively in low-density environments. Using optical line ratios, we split the population into galaxies with spectral lines dominated by active galactic nuclei (AGN) and dominated by star forming regions. Compared with HI-rich star forming ETGs, HI-rich ETGs with AGN tend to be brighter and redder and to exhibit a stronger correlation between stellar mass and HI mass. This work is supported by NSF grant AST-1211005.

  14. Gas, Stars, and Star Formation in ALFALFA Dwarf Galaxies

    Science.gov (United States)

    Huang, Shan; Haynes, Martha P.; Giovanelli, Riccardo; Brinchmann, Jarle; Stierwalt, Sabrina; Neff, Susan G.

    2012-06-01

    We examine the global properties of the stellar and H I components of 229 low H I mass dwarf galaxies extracted from the ALFALFA survey, including a complete sample of 176 galaxies with H I masses global star formation (SF) laws is consistent with the general assumptions that gas-rich galaxies have lower SF efficiencies than do optically selected populations and that H I disks are more extended than stellar ones. Based on observations made with the Arecibo Observatory and the NASA Galaxy Evolution Explorer (GALEX). The Arecibo Observatory is operated by SRI International under a cooperative agreement with the National Science Foundation (AST-1100968), and in alliance with Ana G. Méndez-Universidad Metropolitana and the Universities Space Research Association. GALEX is operated for NASA by the California Institute of Technology under NASA contract NAS5-98034.

  15. The HI Content of Groups as Measured by ALFALFA

    Science.gov (United States)

    Koopmann, Rebecca A.; Crone-Odekon, Mary; Haynes, Martha P.; Finn, Rose; Hallenbeck, Gregory L.; Giovanelli, Riccardo; ALFALFA Team

    2016-01-01

    We present the HI content of galaxies in nearby groups and clusters as measured by the 70% complete Arecibo Legacy Fast-ALFA (ALFALFA) survey, including constraints from ALFALFA detection limits. Our sample includes 22 groups at distances between 70-160 Mpc over the mass range 12.5 < log M/M⊙ < 15.0, for a total of 1986 late-type galaxies out to a projected group-centric distance of 4.0 Mpc. We find that late-type galaxies in the centers of groups lack HI at fixed stellar mass relative to the regions surrounding them. Larger groups show evidence of a stronger gradient in HI properties, despite a similar gradient in stellar mass, and in color at fixed stellar mass, over the same range in r/R200. We compare several environment variables to determine which is the best predictor of galaxy properties; group-centric distance r and r/R200 are similarly effective predictors, while local density is slightly more effective and group size and halo mass are slightly less effective. Finally, we see evidence that HI is deficient for blue cloud galaxies in denser environments even when both stellar mass and color are fixed. This is consistent with a picture where HI is removed or destroyed, followed by reddening within the blue cloud. Overall, our results support the existence of pre-processing in isolated groups, along with an additional rapid mechanism for gas removal within larger groups and clusters, perhaps by ram-pressure stripping. This work has been supported by NSF grants AST-0724918/0902211, AST-075267/0903394, AST-0725380, and AST-1211005.

  16. ALFALFA Hα Reveals How Galaxies Use their HI Fuel

    Science.gov (United States)

    Jaskot, Anne; Oey, Sally; Salzer, John; Van Sistine, Angela; Bell, Eric; Haynes, Martha

    2015-08-01

    Atomic hydrogen traces the raw material from which molecular clouds and stars form. With the ALFALFA Hα survey, a statistically complete subset of the ALFALFA survey, we examine the processes that affect galaxies’ abilities to access and consume their HI gas. On galaxy-wide scales, HI gas fractions correlate only weakly with instantaneous specific star formation rates (sSFRs) but tightly with galaxy color. We show that a connection between dust and HI content, arising from the fundamental mass-metallicity-HI relation, leads to this tight color correlation. We find that disk galaxies follow a relation between stellar surface density and HI depletion time, consistent with a scenario in which higher mid-plane pressure leads to more efficient molecular cloud formation from HI. In contrast, spheroids show no such trend. Starbursts, identified by Hα equivalent width, do not show enhanced HI gas fractions relative to similar mass non-starburst galaxies. The starbursts’ shorter HI depletion times indicate more efficient consumption of HI, and galaxy interactions drive this enhanced star formation efficiency in several starbursts. Interestingly, the most disturbed starbursts show greater enhancements in HI gas fraction, which may indicate an excess of HI at early merger stages. At low galaxy stellar masses, the triggering mechanism for starbursts is less clear; the high scatter in efficiency and sSFR among low-mass galaxies may result from periodic bursts. We find no evidence for depleted HI reservoirs in starbursts, which suggests that galaxies may maintain sufficient HI to fuel multiple starburst episodes.

  17. Proteomic Identification of Differentially Expressed Proteins during Alfalfa (Medicago sativa L.) Flower Development

    Science.gov (United States)

    Chen, Lingling; Chen, Quanzhu; Zhu, Yanqiao; Hou, Longyu; Mao, Peisheng

    2016-01-01

    Flower development, pollination, and fertilization are important stages in the sexual reproduction process of plants; they are also critical steps in the control of seed formation and development. During alfalfa (Medicago sativa L.) seed production, some distinct phenomena such as a low seed setting ratio, serious flower falling, and seed abortion commonly occur. However, the causes of these phenomena are complicated and largely unknown. An understanding of the mechanisms that regulate alfalfa flowering is important in order to increase seed yield. Hence, proteomic technology was used to analyze changes in protein expression during the stages of alfalfa flower development. Flower samples were collected at pre-pollination (S1), pollination (S2), and the post-pollination senescence period (S3). Twenty-four differentially expressed proteins were successfully identified, including 17 down-regulated in pollinated flowers, one up-regulated in pollinated and senesced flowers, and six up-regulated in senesced flowers. The largest proportions of the identified proteins were involved in metabolism, signal transduction, defense response, oxidation reduction, cell death, and programmed cell death (PCD). Their expression profiles demonstrated that energy metabolism, carbohydrate metabolism, and amino acid metabolism provided the nutrient foundation for pollination in alfalfa. Furthermore, there were three proteins involved in multiple metabolic pathways: dual specificity kinase splA-like protein (kinase splALs), carbonic anhydrase, and NADPH: quinone oxidoreductase-like protein. Expression patterns of these proteins indicated that MAPK cascades regulated multiple processes, such as signal transduction, stress response, and cell death. PCD also played an important role in the alfalfa flower developmental process, and regulated both pollination and flower senescence. The current study sheds some light on protein expression profiles during alfalfa flower development and

  18. Role of silicon counteracting cadmium toxicity in Alfalfa (Medicago sativa L.

    Directory of Open Access Journals (Sweden)

    Ahmad H. Kabir

    2016-07-01

    Full Text Available Cadmium (Cd is one of the most phytotoxic elements causing an agricultural problem and human health hazards. This work investigates whether and how silicon (Si ameliorates Cd toxicity in Alfalfa. The addition of Si in Cd-stressed plants caused significant improvement in morpho-physiological features as well as total protein and membrane stability, indicating that Si does have critical roles in Cd detoxification in Alfalfa. Furthermore, Si supplementation in Cd-stressed plants showed a significant decrease in Cd and Fe concentrations in both roots and shoots compared with Cd-stressed plants, revealing that Si-mediated tolerance to Cd stress is associated with Cd inhibition in Alfalfa. Results also showed no significant changes in the expression of two metal chelators [MsPCS1 (phytochelatin synthase and MsMT2 (metallothionein] and PC (phytochelatin accumulation, indicating that there may be no metal sequestration or change in metal sequestration following Si application under Cd stress in Alfalfa. We further performed a targeted study on the effect of Si on Fe uptake mechanisms. We observed the consistent reduction in Fe reductase activity, expression of Fe-related genes [MsIRT1 (Fe transporter, MsNramp1 (metal transporter and OsFRO1 (ferric chelate reductase] and Fe chelators (citrate and malate by Si application to Cd stress in roots of Alfalfa. These results support that limiting Fe uptake through the down-regulation of Fe acquisition mechanisms confers Si-mediated alleviation of Cd toxicity in Alfalfa. Finally, an increase of catalase (CAT, ascorbate peroxidase (APX and superoxide dismutase (SOD activities along with elevated methionine and proline subjected to Si application might play roles, at least in part, to reduce H2O2 and to provide antioxidant defense against Cd stress in Alfalfa. The study shows evidence of the effect of Si on alleviating Cd toxicity in Alfalfa and can be further extended for phytoremediation of Cd toxicity in plants.

  19. Role of Silicon Counteracting Cadmium Toxicity in Alfalfa (Medicago sativa L.).

    Science.gov (United States)

    Kabir, Ahmad H; Hossain, Mohammad M; Khatun, Most A; Mandal, Abul; Haider, Syed A

    2016-01-01

    Cadmium (Cd) is one of the most phytotoxic elements causing an agricultural problem and human health hazards. This work investigates whether and how silicon (Si) ameliorates Cd toxicity in Alfalfa. The addition of Si in Cd-stressed plants caused significant improvement in morpho-physiological features as well as total protein and membrane stability, indicating that Si does have critical roles in Cd detoxification in Alfalfa. Furthermore, Si supplementation in Cd-stressed plants showed a significant decrease in Cd and Fe concentrations in both roots and shoots compared with Cd-stressed plants, revealing that Si-mediated tolerance to Cd stress is associated with Cd inhibition in Alfalfa. Results also showed no significant changes in the expression of two metal chelators [MsPCS1 (phytochelatin synthase) and MsMT2 (metallothionein)] and PC (phytochelatin) accumulation, indicating that there may be no metal sequestration or change in metal sequestration following Si application under Cd stress in Alfalfa. We further performed a targeted study on the effect of Si on Fe uptake mechanisms. We observed the consistent reduction in Fe reductase activity, expression of Fe-related genes [MsIRT1 (Fe transporter), MsNramp1 (metal transporter) and OsFRO1 (ferric chelate reductase] and Fe chelators (citrate and malate) by Si application to Cd stress in roots of Alfalfa. These results support that limiting Fe uptake through the down-regulation of Fe acquisition mechanisms confers Si-mediated alleviation of Cd toxicity in Alfalfa. Finally, an increase of catalase, ascorbate peroxidase, and superoxide dismutase activities along with elevated methionine and proline subjected to Si application might play roles, at least in part, to reduce H2O2 and to provide antioxidant defense against Cd stress in Alfalfa. The study shows evidence of the effect of Si on alleviating Cd toxicity in Alfalfa and can be further extended for phytoremediation of Cd toxicity in plants. PMID:27512401

  20. HI Gas in Large-Scale Filaments as Measured by ALFALFA

    Science.gov (United States)

    Elliott, Skye; Phi, An; Shah, Ebrahim; Livecchi, Jack; Yu, Yang; Gengras, Graeme; Wolfe, Pierre-Francois; Crone-Odekon, Mary; Hyman, Mario; ALFALFA Team

    2016-01-01

    We assess the relationship between galaxy environment and HI content as measured by ALFALFA. In particular, we consider membership in large-scale filaments in order to provide clues to how star formation in galaxies is quenched in different environments. We use data from the Sloan Digital Sky Survey to define galaxy environments in terms of clusters, filaments, and voids for a sample of galaxies with z ALFALFA. This work is supported by NSF grant AST-1211005.

  1. Role of Silicon Counteracting Cadmium Toxicity in Alfalfa (Medicago sativa L.)

    Science.gov (United States)

    Kabir, Ahmad H.; Hossain, Mohammad M.; Khatun, Most A.; Mandal, Abul; Haider, Syed A.

    2016-01-01

    Cadmium (Cd) is one of the most phytotoxic elements causing an agricultural problem and human health hazards. This work investigates whether and how silicon (Si) ameliorates Cd toxicity in Alfalfa. The addition of Si in Cd-stressed plants caused significant improvement in morpho-physiological features as well as total protein and membrane stability, indicating that Si does have critical roles in Cd detoxification in Alfalfa. Furthermore, Si supplementation in Cd-stressed plants showed a significant decrease in Cd and Fe concentrations in both roots and shoots compared with Cd-stressed plants, revealing that Si-mediated tolerance to Cd stress is associated with Cd inhibition in Alfalfa. Results also showed no significant changes in the expression of two metal chelators [MsPCS1 (phytochelatin synthase) and MsMT2 (metallothionein)] and PC (phytochelatin) accumulation, indicating that there may be no metal sequestration or change in metal sequestration following Si application under Cd stress in Alfalfa. We further performed a targeted study on the effect of Si on Fe uptake mechanisms. We observed the consistent reduction in Fe reductase activity, expression of Fe-related genes [MsIRT1 (Fe transporter), MsNramp1 (metal transporter) and OsFRO1 (ferric chelate reductase] and Fe chelators (citrate and malate) by Si application to Cd stress in roots of Alfalfa. These results support that limiting Fe uptake through the down-regulation of Fe acquisition mechanisms confers Si-mediated alleviation of Cd toxicity in Alfalfa. Finally, an increase of catalase, ascorbate peroxidase, and superoxide dismutase activities along with elevated methionine and proline subjected to Si application might play roles, at least in part, to reduce H2O2 and to provide antioxidant defense against Cd stress in Alfalfa. The study shows evidence of the effect of Si on alleviating Cd toxicity in Alfalfa and can be further extended for phytoremediation of Cd toxicity in plants. PMID:27512401

  2. Comparative physiological and transcriptional analyses of two contrasting drought tolerant alfalfa varieties

    OpenAIRE

    Wenli eQuan; Xun eLiu; Haiqing eWang; Zhulong eChan

    2016-01-01

    Drought is one of major environmental determinants of plant growth and productivity. Alfalfa (Medicago sativa) is a legume perennial forage crop native to the arid and semi-arid environment, which is an ideal candidate to study the biochemical and molecular mechanisms conferring drought resistance in plants. In this study, drought stress responses of two alfalfa varieties, Longdong and Algonquin, were comparatively assayed at the physiological, morphological and transcriptional levels. Under ...

  3. Comparative Physiological and Transcriptional Analyses of Two Contrasting Drought Tolerant Alfalfa Varieties

    OpenAIRE

    Quan, Wenli; Liu, Xun; Wang, Haiqing; Chan, Zhulong

    2016-01-01

    Drought is one of major environmental determinants of plant growth and productivity. Alfalfa (Medicago sativa) is a legume perennial forage crop native to the arid and semi-arid environment, which is an ideal candidate to study the biochemical and molecular mechanisms conferring drought resistance in plants. In this study, drought stress responses of two alfalfa varieties, Longdong and Algonquin, were comparatively assayed at the physiological, morphological, and transcriptional levels. Under...

  4. Effects of the Insect Growth Regulator, Novaluron on Immature Alfalfa Leafcutting Bees, Megachile rotundata

    OpenAIRE

    Erin W Hodgson; Pitts-Singer, Theresa L.; James D. Barbour

    2011-01-01

    Alfalfa leafcutting bees, Megachile rotundata F. (Hymenoptera: Megachilidae), are the most common pollinators of alfalfa in the Pacific Northwest. Reports from users of M. rotundata in Idaho, Utah and Colorado have indicated exceptionally poor bee return from fields treated with novaluron to control Lygus spp. Our goal was to evaluate novaluron toxicity to immature M. rotundata using two different possible mechanisms of exposure. One goal was to assess immature mortality via treating nectar-p...

  5. Performance of lactating dairy cows fed alfalfa silage or perennial ryegrass silage.

    Science.gov (United States)

    Hoffman, P C; Combs, D K; Casler, M D

    1998-01-01

    The nutrient contents of perennial ryegrass (Lolium perenne L.) and alfalfa (Medicago sativa L.) are reasonably similar. Despite similarities, the lactation performance of dairy cows fed perennial ryegrass has not been compared with the lactation performance of dairy cows fed alfalfa. The present study was implemented to compare the performance of lactating cows fed alfalfa or perennial ryegrass silage. Alfalfa and perennial ryegrass were harvested at late bud and boot stages of maturity, respectively, and ensiled in separate 4.9- x 18.3-m concrete silos. The experimental silages were supplemented with a concentrate mix at 31.1% of dietary dry matter and fed to 18 multiparous Holstein cows in early lactation in a crossover experimental design with 28-d periods. Digestibility and rate of passage of experimental diets were also measured using rare earth markers. The perennial ryegrass contained 3.0 percentage units more neutral detergent fiber than did alfalfa, but in vitro digestibility of neutral detergent fiber was 8.8 percentage units higher for perennial ryegrass. In vitro digestibility of dry matter was also higher for perennial ryegrass. Cows fed alfalfa silage produced more milk (31.8 kg/d) than did cows fed perennial ryegrass silage (30.2 kg/d). Cows fed perennial ryegrass silage ate less feed (2.2 kg/d) than did cows fed alfalfa. Because dry matter intake was lower, diet digestibilities were higher, and rate of passage was slower, for cows consuming perennial ryegrass. Based on laboratory evaluations, perennial ryegrass silage has high nutritional quality, but performance of lactating cows indicated that the forage was suboptimal for supporting high milk production when compared with alfalfa. The perennial ryegrass silage was suboptimal because it did not stimulate high amounts of dry matter intake in lactating cows. PMID:9493091

  6. Alfalfa water use pinpointed in saline, shallow water tables of Imperial Valley

    OpenAIRE

    Bali, Khaled M.; Grismer, Mark E.; Snyder, Richard L.

    2001-01-01

    Although alfalfa is the dominant water user in the Imperial Valley and is planted on 40% of its irrigated acreage, data is incomplete regarding its water use under the most common growing conditions: moderately saline, clay soils with a relatively shallow, moderately saline water table. In a study from 1996 through 1998, we determined the seasonal variation in the alfalfa crop coefficient (Kc), based on measurements of applied water and soil-moisture depletion, and the contribution from the w...

  7. [Determination of Hard Rate of Alfalfa (Medicago sativa L.) Seeds with Near Infrared Spectroscopy].

    Science.gov (United States)

    Wang, Xin-xun; Chen, Ling-ling; Zhang, Yun-wei; Mao, Pei-sheng

    2016-03-01

    Alfalfa (Medicago sativa L.) is the most commonly grown forage crop due to its better quality characteristics and high adaptability in China. However, there was 20%-80% hard seeds in alfalfa which could not be identified easily from non hard seeds which would cause the loss of seed utilization value and plant production. This experiment was designed for 121 samples of alfalfa. Seeds were collected according to different regions, harvested year and varieties. 31 samples were artificial matched as hard rates ranging from 20% to 80% to establish a model for hard seed rate by near infrared spectroscopy (NIRS) with Partial Least Square (PLS). The objective of this study was to establish a model and to estimate the efficiency of NIRS for determining hard rate of alfalfa seeds. The results showed that the correlation coefficient (R2(cal)) of calibration model was 0.981 6, root mean square error of cross validation (RMSECV) was 5.32, and the ratio of prediction to deviation (RPD) was 3.58. The forecast model in this experiment presented the satisfied precision. The proposed method using NIRS technology is feasible for identification and classification of hard seed in alfalfa. A new method, as nondestructive testing of hard seed rate, was provided to theoretical basis for fast nondestructive detection of hard seed rates in alfalfa. PMID:27400509

  8. Germinación y crecimiento de alfalfa bajo condiciones salinas Germination and growth of alfalfa under saline conditions

    Directory of Open Access Journals (Sweden)

    Sara Lucía González-Romero

    2011-02-01

    Full Text Available En México, el cultivo de la alfalfa (Medicago sativa L. se emplea para la alimentación del ganado bovino, éste cuenta con investigaciones de respuestas a estrés salino en la etapa de germinación; sin embargo, sólo se han usado diferentes niveles de NaCl o de manitol y polietilenglicol; por lo anterior, los objetivos de esta investigación fue estudiar la respuesta a la salinidad, que se presenta en zonas áridas y semiáridas de México de la alfalfa en la etapa de germinación y evaluar su efecto sobre el crecimiento de la radícula y la parte aérea. Para cumplir lo anterior, en el laboratorio de salinidad del Colegio de Postgraduados en Ciencias Agrícolas durante el 2009, las semillas se sometieron a pruebas de germinación en un diseño factorial de 11 soluciones salinas a ocho dosis (0, 2, 4, 8, 11.7, 15, 19 y 28 dS m-1 y tres repeticiones. Se observó que las sales NaHCO3 y sulfático-sódica influyeron más sobre la germinación; y las sales CaCl2 2H2O y sulfática registraron el mayor porcentaje de germinación; para el crecimiento de radícula la sal que más afectó fue el NaHCO3 y la salinidad sulfática; las sales CaCl2 2H2O y sulfático-clorhídrica permitieron mayor desarrollo. El crecimiento de la parte aérea fue más afectado en comparación al desarrollo de la radícula. La mezcla de sales favoreció el porcentaje de germinación, el crecimiento de radícula y parte aérea.In Mexico, alfalfa (Medicago sativa L. is used for feeding cattle and has been studied for responses to salt stress in the germination phase; however, only NaCl or mannitol and polyethylene glycols have been used in different levels. Due to this, the aims of this research were to study the response of alfalfa in the germination stage to the salinity of the arid and semiarid areas in Mexico, and to evaluate its effect on the growth of the radicle and aerial section. In order to achieve this, in the salinity lab of the Colegio de Postgraduados en

  9. Metadata issues in Digital Libraries: key concepts and perspectives

    Directory of Open Access Journals (Sweden)

    Iryna Solodovnik

    2011-12-01

    Full Text Available The article sets out to investigate the meaning, role and implications of some information management approaches used in Digital Library practice. A greater focus on innovation in managing online resources and on improving their interoperability can be achieved by normalizing metadata schemas through interoperable standards, world-wide accepted controlled vocabularies as well as by their enrichment through qualitatively constructed ontologies and linked data, which are key to the expansion of the semantic reasoning on the web through building and connection of additional semantic layers on top of metadata descriptions. Reviewing some innovative methods of information representation (LODe-BD, SWAP, the paper tries to lead the reader to discover some new ways of knowledge creation in digital information environment, in particular what concerns digital bibliographic records.

  10. Data bookkeeping service 3 – providing event metadata in CMS

    International Nuclear Information System (INIS)

    The Data Bookkeeping Service 3 provides a catalog of event metadata for Monte Carlo and recorded data of the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) at CERN, Geneva. It comprises all necessary information for tracking datasets, their processing history and associations between runs, files and datasets, on a large scale of about 200, 000 datasets and more than 40 million files, which adds up in around 700 GB of metadata. The DBS is an essential part of the CMS Data Management and Workload Management (DMWM) systems [1], all kind of data-processing like Monte Carlo production, processing of recorded event data as well as physics analysis done by the users are heavily relying on the information stored in DBS.

  11. Metadata and Data Management for the Keck Observatory Archive

    CERN Document Server

    Tran, H D; Goodrich, R W; Mader, J A; Swain, M; Laity, A C; Kong, M; Gelino, C R; Berriman, G B

    2014-01-01

    A collaboration between the W. M. Keck Observatory (WMKO) in Hawaii and the NASA Exoplanet Science Institute (NExScI) in California, the Keck Observatory Archive (KOA) was commissioned in 2004 to archive observing data from WMKO, which operates two classically scheduled 10 m ground-based telescopes. The observing data from Keck is not suitable for direct ingestion into the archive since the metadata contained in the original FITS headers lack the information necessary for proper archiving. Coupled with different standards among instrument builders and the heterogeneous nature of the data inherent in classical observing, in which observers have complete control of the instruments and their observations, the data pose a number of technical challenges for KOA. We describe the methodologies and tools that we have developed to successfully address these difficulties, adding content to the FITS headers and "retrofitting" the metadata in order to support archiving Keck data, especially those obtained before the arch...

  12. The ground truth about metadata and community detection in networks

    CERN Document Server

    Peel, Leto; Clauset, Aaron

    2016-01-01

    Across many scientific domains, there is common need to automatically extract a simplified view or a coarse-graining of how a complex system's components interact. This general task is called community detection in networks and is analogous to searching for clusters in independent vector data. It is common to evaluate the performance of community detection algorithms by their ability to find so-called \\textit{ground truth} communities. This works well in synthetic networks with planted communities because such networks' links are formed explicitly based on the planted communities. However, there are no planted communities in real world networks. Instead, it is standard practice to treat some observed discrete-valued node attributes, or metadata, as ground truth. Here, we show that metadata are not the same as ground truth, and that treating them as such induces severe theoretical and practical problems. We prove that no algorithm can uniquely solve community detection, and we prove a general No Free Lunch the...

  13. Data Bookkeeping Service 3 - Providing event metadata in CMS

    CERN Document Server

    Giffels, Manuel; Riley, Daniel

    2014-01-01

    The Data Bookkeeping Service 3 provides a catalog of event metadata for Monte Carlo and recorded data of the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) at CERN, Geneva. It comprises all necessary information for tracking datasets, their processing history and associations between runs, files and datasets, on a large scale of about $200,000$ datasets and more than $40$ million files, which adds up in around $700$ GB of metadata. The DBS is an essential part of the CMS Data Management and Workload Management (DMWM) systems, all kind of data-processing like Monte Carlo production, processing of recorded event data as well as physics analysis done by the users are heavily relying on the information stored in DBS.

  14. ATLAS Metadata Infrastructure Evolution for Run 2 and Beyond

    CERN Document Server

    van Gemmeren, Peter; The ATLAS collaboration; Malon, David; Vaniachine, Alexandre

    2015-01-01

    ATLAS developed and employed for Run 1 of the Large Hadron Collider a sophisticated infrastructure for metadata handling in event processing jobs. This infrastructure profits from a rich feature set provided by the ATLAS execution control framework, including standardized interfaces and invocation mechanisms for tools and services, segregation of transient data stores with concomitant object lifetime management, and mechanisms for handling occurrences asynchronous to the control framework’s state machine transitions. This metadata infrastructure is evolving and being extended for Run 2 to allow its use and reuse in downstream physics analyses, analyses that may or may not utilize the ATLAS control framework. At the same time, multiprocessing versions of the control framework and the requirements of future multithreaded frameworks are leading to redesign of components that use an incident-handling approach to asynchrony. The increased use of scatter-gather architectures, both local and distributed, requires ...

  15. A case for user-generated sensor metadata

    Science.gov (United States)

    Nüst, Daniel

    2015-04-01

    Cheap and easy to use sensing technology and new developments in ICT towards a global network of sensors and actuators promise previously unthought of changes for our understanding of the environment. Large professional as well as amateur sensor networks exist, and they are used for specific yet diverse applications across domains such as hydrology, meteorology or early warning systems. However the impact this "abundance of sensors" had so far is somewhat disappointing. There is a gap between (community-driven) sensor networks that could provide very useful data and the users of the data. In our presentation, we argue this is due to a lack of metadata which allows determining the fitness of use of a dataset. Syntactic or semantic interoperability for sensor webs have made great progress and continue to be an active field of research, yet they often are quite complex, which is of course due to the complexity of the problem at hand. But still, we see the most generic information to determine fitness for use is a dataset's provenance, because it allows users to make up their own minds independently from existing classification schemes for data quality. In this work we will make the case how curated user-contributed metadata has the potential to improve this situation. This especially applies for scenarios in which an observed property is applicable in different domains, and for set-ups where the understanding about metadata concepts and (meta-)data quality differs between data provider and user. On the one hand a citizen does not understand the ISO provenance metadata. On the other hand a researcher might find issues in publicly accessible time series published by citizens, which the latter might not be aware of or care about. Because users will have to determine fitness for use for each application on their own anyway, we suggest an online collaboration platform for user-generated metadata based on an extremely simplified data model. In the most basic fashion

  16. Automatic Metadata Extraction - The High Energy Physics Use Case

    CERN Document Server

    Boyd, Joseph; Rajman, Martin

    Automatic metadata extraction (AME) of scientific papers has been described as one of the hardest problems in document engineering. Heterogeneous content, varying style, and unpredictable placement of article components render the problem inherently indeterministic. Conditional random fields (CRF), a machine learning technique, can be used to classify document metadata amidst this uncertainty, annotating document contents with semantic labels. High energy physics (HEP) papers, such as those written at CERN, have unique content and structural characteristics, with scientific collaborations of thousands of authors altering article layouts dramatically. The distinctive qualities of these papers necessitate the creation of specialised datasets and model features. In this work we build an unprecedented training set of HEP papers and propose and evaluate a set of innovative features for CRF models. We build upon state-of-the-art AME software, GROBID, a tool coordinating a hierarchy of CRF models in a full document ...

  17. Network structure, metadata and the prediction of missing nodes

    CERN Document Server

    Hric, Darko; Fortunato, Santo

    2016-01-01

    The empirical validation of community detection methods is often based on available annotations on the nodes that serve as putative indicators of the large-scale network structure. Most often, the suitability of the annotations as topological descriptors itself is not assessed, and without this it is not possible to ultimately distinguish between actual shortcomings of the community detection algorithms on one hand, and the incompleteness, inaccuracy or structured nature of the data annotations themselves on the other. In this work we present a principled method to access both aspects simultaneously. We construct a joint generative model for the data and metadata, and a non-parametric Bayesian framework to infer its parameters from annotated datasets. We assess the quality of the metadata not according to its direct alignment with the network communities, but rather in its capacity to predict the placement of edges in the network. We also show how this feature can be used to predict the connections to missing...

  18. CAMELOT: Cloud Archive for MEtadata, Library and Online Toolkit

    Science.gov (United States)

    Ginsburg, Adam; Kruijssen, J. M. Diederik; Longmore, Steven N.; Koch, Eric; Glover, Simon C. O.; Dale, James E.; Commerçon, Benoît; Giannetti, Andrea; McLeod, Anna F.; Testi, Leonardo; Zahorecz, Sarolta; Rathborne, Jill M.; Zhang, Qizhou; Fontani, Francesco; Beltrán, Maite T.; Rivilla, Victor M.

    2016-05-01

    CAMELOT facilitates the comparison of observational data and simulations of molecular clouds and/or star-forming regions. The central component of CAMELOT is a database summarizing the properties of observational data and simulations in the literature through pertinent metadata. The core functionality allows users to upload metadata, search and visualize the contents of the database to find and match observations/simulations over any range of parameter space. To bridge the fundamental disconnect between inherently 2D observational data and 3D simulations, the code uses key physical properties that, in principle, are straightforward for both observers and simulators to measure — the surface density (Sigma), velocity dispersion (sigma) and radius (R). By determining these in a self-consistent way for all entries in the database, it should be possible to make robust comparisons.

  19. Content-aware network storage system supporting metadata retrieval

    Science.gov (United States)

    Liu, Ke; Qin, Leihua; Zhou, Jingli; Nie, Xuejun

    2008-12-01

    Nowadays, content-based network storage has become the hot research spot of academy and corporation[1]. In order to solve the problem of hit rate decline causing by migration and achieve the content-based query, we exploit a new content-aware storage system which supports metadata retrieval to improve the query performance. Firstly, we extend the SCSI command descriptor block to enable system understand those self-defined query requests. Secondly, the extracted metadata is encoded by extensible markup language to improve the universality. Thirdly, according to the demand of information lifecycle management (ILM), we store those data in different storage level and use corresponding query strategy to retrieval them. Fourthly, as the file content identifier plays an important role in locating data and calculating block correlation, we use it to fetch files and sort query results through friendly user interface. Finally, the experiments indicate that the retrieval strategy and sort algorithm have enhanced the retrieval efficiency and precision.

  20. El cultivo de alfalfa utilizando agua de perforación, agua residual urbana y precipitaciones The cultivation of alfalfa using artesian well water, urban wastewater and rainfall

    Directory of Open Access Journals (Sweden)

    José O. Plevich

    2012-12-01

    Full Text Available El objetivo de este trabajo fue analizar la producción de biomasa aérea, la eficiencia del uso de agua y el valor nutritivo de alfalfa cultivada aplicando riego con agua residual urbana, agua de perforación y un testigo (precipitaciones, en el Campus de la Universidad Nacional de Rio Cuarto (Córdoba-Argentina. Los tratamientos de riego tuvieron un efecto positivo sobre la producción de biomasa aérea obteniéndose un 24% más de producción de biomasa que en la situación de secano (precipitaciones. Entre los tratamientos con riego también se manifestaron diferencias estadísticamente significativas. La alfalfa regada con aguas residuales urbana supero en un 19% a la cultivada con agua de perforación. La eficiencia del uso del agua por parte del cultivo se incrementó cuando el riego se realizó con aguas residuales urbanas. Además, se determinó que la alfalfa regada con agua residual, supera los valores nutritivos del cultivo que crece en condiciones sin riego; encontrándose 39% más de proteínas, 14% más de digestibilidad e igual porcentaje de energía metabólica. Se puede concluir que el agua residual urbana representa otra posible fuente de agua, factible de ingresar al suelo y estar a disposición para el cultivo de alfalfa.The objective of this study was to analyse the production of alfalfa biomass, the efficiency of water use and the nutritional value of forage, inside an irrigation structure of an experimental facility that uses treated urban wastewater, artesian well water and rainfall, at the campus of the Universidad National de Rio Cuarto (Córdoba-Argentina. The irrigation treatment had a positive effect on the production of biomass of alfalfa. On an average 24% increase in production was observed when compared to dry-land farming. Regarding the quality of the irrigation water, statistical differences in production were observed, the irrigation with urban wastewater produced 19% more than that of well water. The

  1. Effect of replacing alfalfa with panicled-tick clover or sericea lespedeza in corn-alfalfa-based substrates on in vitro ruminal methane production.

    Science.gov (United States)

    Naumann, H D; Lambert, B D; Armstrong, S A; Fonseca, M A; Tedeschi, L O; Muir, J P; Ellersieck, M R

    2015-06-01

    Methane emissions from ruminant livestock contribute to total anthropogenic greenhouse gas emissions and reduce metabolizable energy intake by the animal. Condensed tannins (CT) are polyphenolic plant secondary compounds commonly produced by some perennial forage legumes that characteristically bind to protein, carbohydrates, and minerals. The degree to which CT may affect ruminant nutrition depends upon the concentration, structural composition, and biological activity of the CT. The objective of our experiment was to determine the effect of replacing alfalfa in a corn-alfalfa-based substrate with a legume containing CT on in vitro CH4 production and the dynamics of fermentation using an in vitro gas production technique. All fermented substrates contained 50% ground corn as the energy concentrate portion, whereas the forage portion (50%) of each diet was comprised of alfalfa (control) or some combination of alfalfa and sericea lespedeza (SL) or panicled-tick clover (PTC). Our treatments consisted of PTC or SL 15, 30, and 45, which corresponded with 15, 30, or 45% replacement of the diet (alfalfa component) with either PTC or SL. Substrates containing 45% PTC or SL reduced in vitro CH4 production. Treatments did not affect total gas production as compared with that of the control. Replacement of alfalfa with SL or PTC increased fermentable organic matter (FOM). The PTC treatment increased FOM by as much as 1.8% at the 45% replacement level, whereas FOM of SL 45 was increased by less than 1%. The replacement of alfalfa with PTC increased substrate nutritive value greater than replacement with SL. There were no correlations between any physicochemical constituent of the substrates and CH4 production. A combination of factors associated with the inclusion of PTC and SL contributed to the in vitro CH4 production, and CT in these forages was likely a major contributing factor. Further confirmation of these results on in situ or in vivo animal systems is required. If

  2. Intended release and actual retention of alfalfa leafcutting bees (Hymenoptera: Megachilidae) for pollination in commercial alfalfa seed fields.

    Science.gov (United States)

    Pitts-Singer, Theresa L

    2013-04-01

    Low, medium, and high stocking densities (15,000; 30,000; and 45,000-50,000 bees per acre, respectively) of Megachile rotundata (F.) (Hymenoptera: Megachilidae), the alfalfa leafcutting bee, were released over 4 yr in three research plots of Utah alfalfa, Medicago sativa L. (Fabaceae), planted at seed-production rates. A low percentage of bees (46-79% of released) survived the incubation and field-emergence processes; of those bees, the number of females that established at the nesting sites was 25-100%. Of the three field sites, one site consistently retained more females and produced more completed nests than the other sites, all of which usually had poor female establishment and progeny production. In addition, floral resources were depleted over time, but many flowers remained unvisited over the season. Nest production decreased over time, as numbers of flowers and female bees declined. Significant positive relationships were found between the intended stocking densities and 1) the number of females that actually survived incubation and field emergence and 2) the number of females that established nests. The number of females that established nests was positively affected by the number of females that survived to emerge in the field. The percentage of females that established was not significantly affected by the intended number of released bees, countering a prediction that the release of fewer bees would allow more females to establish nests and achieve high reproductive success. For growers, it may be more frugal to use modest numbers of M. rotundata for pollination, because many of the bees at medium and high stocking densities do not nest in grower-provided bee boards. PMID:23786042

  3. Technical Evaluation Report 40: The International Learning Object Metadata Survey

    OpenAIRE

    Norm Friesen

    2004-01-01

    A wide range of projects and organizations is currently making digital learning resources (learning objects) available to instructors, students, and designers via systematic, standards-based infrastructures. One standard that is central to many of these efforts and infrastructures is known as Learning Object Metadata (IEEE 1484.12.1-2002, or LOM). This report builds on Report #11 in this series, and discusses the findings of the author's recent study of ways in which the LOM standard is being...

  4. A Metadata Schema for Geospatial Resource Discovery Use Cases

    OpenAIRE

    Darren Hardy; Kim Durante

    2014-01-01

    We introduce a metadata schema that focuses on GIS discovery use cases for patrons in a research library setting. Text search, faceted refinement, and spatial search and relevancy are among GeoBlacklight's primary use cases for federated geospatial holdings. The schema supports a variety of GIS data types and enables contextual, collection-oriented discovery applications as well as traditional portal applications. One key limitation of GIS resource discovery is the general lack of normative m...

  5. Metadata and API Based Environment Aware Content Delivery Architecture

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    One of the limitations of current content delivery networks is lack of support for environment aware content delivery. This paper first discusses the requirements of such support, and proposes a new metadata gateway based environment aware content delivery architecture. The paper discusses in some details key functions and technologies of environment aware content delivery architecture, including its APIs and control policies. Finally the paper presents an application to illustrate advantages of environment aware content delivery architecture in the context of next generation network.

  6. Automated Atmospheric Composition Dataset Level Metadata Discovery. Difficulties and Surprises

    Science.gov (United States)

    Strub, R. F.; Falke, S. R.; Kempler, S.; Fialkowski, E.; Goussev, O.; Lynnes, C.

    2015-12-01

    The Atmospheric Composition Portal (ACP) is an aggregator and curator of information related to remotely sensed atmospheric composition data and analysis. It uses existing tools and technologies and, where needed, enhances those capabilities to provide interoperable access, tools, and contextual guidance for scientists and value-adding organizations using remotely sensed atmospheric composition data. The initial focus is on Essential Climate Variables identified by the Global Climate Observing System - CH4, CO, CO2, NO2, O3, SO2 and aerosols. This poster addresses our efforts in building the ACP Data Table, an interface to help discover and understand remotely sensed data that are related to atmospheric composition science and applications. We harvested GCMD, CWIC, GEOSS metadata catalogs using machine to machine technologies - OpenSearch, Web Services. We also manually investigated the plethora of CEOS data providers portals and other catalogs where that data might be aggregated. This poster is our experience of the excellence, variety, and challenges we encountered.Conclusions:1.The significant benefits that the major catalogs provide are their machine to machine tools like OpenSearch and Web Services rather than any GUI usability improvements due to the large amount of data in their catalog.2.There is a trend at the large catalogs towards simulating small data provider portals through advanced services. 3.Populating metadata catalogs using ISO19115 is too complex for users to do in a consistent way, difficult to parse visually or with XML libraries, and too complex for Java XML binders like CASTOR.4.The ability to search for Ids first and then for data (GCMD and ECHO) is better for machine to machine operations rather than the timeouts experienced when returning the entire metadata entry at once. 5.Metadata harvest and export activities between the major catalogs has led to a significant amount of duplication. (This is currently being addressed) 6.Most (if not

  7. Enriching e-learning metadata through digital library usage analysis

    OpenAIRE

    Ferran Ferrer, Núria; Casadesús Brugués, Jaume; Krakowska, Monika; Minguillón Alfonso, Julià

    2007-01-01

    Purpose: In this paper we propose an evaluation framework for analyzing learning objects usage, with the aim of extracting useful information for improving the quality of the metadata used to describe the learning objects, but also for personalization purposes, including user models and adaptive itineraries. Methodology: We present experimental results from the log usage analysis during one academic semester of two different subjects, 350 students. The experiment looks into raw server l...

  8. Embedding Metadata and Other Semantics in Word Processing Documents

    Directory of Open Access Journals (Sweden)

    Peter Sefton

    2009-10-01

    Full Text Available This paper describes a technique for embedding document metadata, and potentially other semantic references inline in word processing documents, which the authors have implemented with the help of a software development team. Several assumptions underly the approach; It must be available across computing platforms and work with both Microsoft Word (because of its user base and OpenOffice.org (because of its free availability. Further the application needs to be acceptable to and usable by users, so the initial implementation covers only small number of features, which will only be extended after user-testing. Within these constraints the system provides a mechanism for encoding not only simple metadata, but for inferring hierarchical relationships between metadata elements from a ‘flat’ word processing file.The paper includes links to open source code implementing the techniques as part of a broader suite of tools for academic writing. This addresses tools and software, semantic web and data curation, integrating curation into research workflows and will provide a platform for integrating work on ontologies, vocabularies and folksonomies into word processing tools.

  9. ISO, FGDC, DIF and Dublin Core - Making Sense of Metadata Standards for Earth Science Data

    Science.gov (United States)

    Jones, P. R.; Ritchey, N. A.; Peng, G.; Toner, V. A.; Brown, H.

    2014-12-01

    Metadata standards provide common definitions of metadata fields for information exchange across user communities. Despite the broad adoption of metadata standards for Earth science data, there are still heterogeneous and incompatible representations of information due to differences between the many standards in use and how each standard is applied. Federal agencies are required to manage and publish metadata in different metadata standards and formats for various data catalogs. In 2014, the NOAA National Climatic data Center (NCDC) managed metadata for its scientific datasets in ISO 19115-2 in XML, GCMD Directory Interchange Format (DIF) in XML, DataCite Schema in XML, Dublin Core in XML, and Data Catalog Vocabulary (DCAT) in JSON, with more standards and profiles of standards planned. Of these standards, the ISO 19115-series metadata is the most complete and feature-rich, and for this reason it is used by NCDC as the source for the other metadata standards. We will discuss the capabilities of metadata standards and how these standards are being implemented to document datasets. Successful implementations include developing translations and displays using XSLTs, creating links to related data and resources, documenting dataset lineage, and establishing best practices. Benefits, gaps, and challenges will be highlighted with suggestions for improved approaches to metadata storage and maintenance.

  10. 苜蓿的药用功效和开发利用%Medicinal Effects, Development and Utilization of Alfalfa

    Institute of Scientific and Technical Information of China (English)

    高宇; 石杰; 王云云; 尤秋实

    2011-01-01

    The development history of alfalfa, the relationship between the nutrients of alfalfa and the human health and the development and utilization of alfalfa were introduced. And some suggestions on the development of alfalfa were also proposed.%阐述了苜蓿发展的历史、苜蓿所合营养元素与人类健康的关系和苜蓿的开发利用情况,并对苜蓿产业的发展提出了建议。

  11. Metadata Wizard: an easy-to-use tool for creating FGDC-CSDGM metadata for geospatial datasets in ESRI ArcGIS Desktop

    Science.gov (United States)

    Ignizio, Drew A.; O'Donnell, Michael S.; Talbert, Colin B.

    2014-01-01

    Creating compliant metadata for scientific data products is mandated for all federal Geographic Information Systems professionals and is a best practice for members of the geospatial data community. However, the complexity of the The Federal Geographic Data Committee’s Content Standards for Digital Geospatial Metadata, the limited availability of easy-to-use tools, and recent changes in the ESRI software environment continue to make metadata creation a challenge. Staff at the U.S. Geological Survey Fort Collins Science Center have developed a Python toolbox for ESRI ArcDesktop to facilitate a semi-automated workflow to create and update metadata records in ESRI’s 10.x software. The U.S. Geological Survey Metadata Wizard tool automatically populates several metadata elements: the spatial reference, spatial extent, geospatial presentation format, vector feature count or raster column/row count, native system/processing environment, and the metadata creation date. Once the software auto-populates these elements, users can easily add attribute definitions and other relevant information in a simple Graphical User Interface. The tool, which offers a simple design free of esoteric metadata language, has the potential to save many government and non-government organizations a significant amount of time and costs by facilitating the development of The Federal Geographic Data Committee’s Content Standards for Digital Geospatial Metadata compliant metadata for ESRI software users. A working version of the tool is now available for ESRI ArcDesktop, version 10.0, 10.1, and 10.2 (downloadable at http:/www.sciencebase.gov/metadatawizard).

  12. Pragmatic Metadata Management for Integration into Multiple Spatial Data Infrastructure Systems and Platforms

    Science.gov (United States)

    Benedict, K. K.; Scott, S.

    2013-12-01

    While there has been a convergence towards a limited number of standards for representing knowledge (metadata) about geospatial (and other) data objects and collections, there exist a variety of community conventions around the specific use of those standards and within specific data discovery and access systems. This combination of limited (but multiple) standards and conventions creates a challenge for system developers that aspire to participate in multiple data infrastrucutres, each of which may use a different combination of standards and conventions. While Extensible Markup Language (XML) is a shared standard for encoding most metadata, traditional direct XML transformations (XSLT) from one standard to another often result in an imperfect transfer of information due to incomplete mapping from one standard's content model to another. This paper presents the work at the University of New Mexico's Earth Data Analysis Center (EDAC) in which a unified data and metadata management system has been developed in support of the storage, discovery and access of heterogeneous data products. This system, the Geographic Storage, Transformation and Retrieval Engine (GSTORE) platform has adopted a polyglot database model in which a combination of relational and document-based databases are used to store both data and metadata, with some metadata stored in a custom XML schema designed as a superset of the requirements for multiple target metadata standards: ISO 19115-2/19139/19110/19119, FGCD CSDGM (both with and without remote sensing extensions) and Dublin Core. Metadata stored within this schema is complemented by additional service, format and publisher information that is dynamically "injected" into produced metadata documents when they are requested from the system. While mapping from the underlying common metadata schema is relatively straightforward, the generation of valid metadata within each target standard is necessary but not sufficient for integration into

  13. Screening of Cd tolerant genotypes and isolation of metallothionein genes in alfalfa (Medicago sativa L.)

    Energy Technology Data Exchange (ETDEWEB)

    Wang Xiaojuan, E-mail: xiaojuanwang@lzu.edu.cn [School of Pastoral Agriculture Science and Technology, Lanzhou University, P.O. Box 61, Lanzhou 730020 (China); Song, Yu [School of Pastoral Agriculture Science and Technology, Lanzhou University, P.O. Box 61, Lanzhou 730020 (China); Environment Management College of China, Qinhuangdao 066004 (China); Ma Yanhua [Hebei Normal University of Science and Technology, Qinhuangdao 066004 (China); Zhuo Renying [Key Lab of Tree Genomics, Research Institute of Subtropical of Forest, Chinese Academy of Forest, Fuyang 311400 (China); Jin Liang [School of Pastoral Agriculture Science and Technology, Lanzhou University, P.O. Box 61, Lanzhou 730020 (China)

    2011-12-15

    In order to evaluate Cd tolerance in wide-ranging sources of alfalfa (Medicago sativa) and to identify Cd tolerant genotypes which may potentially be useful for restoring Cd-contaminated environments, thirty-six accessions of alfalfa were screened under hydroponic culture. Our results showed that the relative root growth rate varied from 0.48 to 1.0, which indicated that different alfalfa accessions had various responses to Cd stress. The candidate fragments derived from differentially expressed metallothionein (MT) genes were cloned from leaves of two Cd tolerant genotypes, YE and LZ. DNA sequence and the deduced protein sequence showed that MsMT2a and MsMT2b had high similarity to those in leguminous plants. DDRT-PCR analysis showed that MsMT2a expressed in both YE and LZ plants under control and Cd stress treatment, but MsMT2b only expressed under Cd stress treatment. This suggested that MsMT2a was universally expressed in leaves of alfalfa but expression of MsMT2b was Cadmium (Cd) inducible. - Highlights: > Evaluate Cd tolerance in wide sources of alfalfa accessions. > Identify Cd-hyperaccumulators potentially useful for restoring Cd-contaminated environments. > Cloned differentially expressed metallothionein (MT) genes. > Characteristics and deduced protein sequence of MsMT2a and MsMT2b were analyzed. > MsMT2a might be a universally gene of alfalfa but MsMT2b might be an inductive gene. - Two Cd tolerant alfalfa genotypes were screened and their metallothionein genes were cloned which showed that MsMT2a was universally expressed but MsMT2b was Cd inducible expression.

  14. Effectivenes of inoculation in alfalfa breeding in ecological conditions of the Bjelovar and Bilogora county

    Directory of Open Access Journals (Sweden)

    Darko Uher

    2012-09-01

    Full Text Available Development and basic existence of animal production as well as production of high quality milk depends upon possibility of sufficient production of quality and protein sufficient forage. Forage crop that satisfies these demands is alfalfa which is one of the most important perennial forage crop legumes. The aim of this study was to enhance alfalfa production on acid soil by liming and alfalfa seed inoculation with efficient Sinorhizobium meliloti strains in order to reduce the use of mineral nitrogen fertilization and enable qualitative and cost effective production of forage on the dairy farms. Field trial was established at family farm in the area of Bjelovar and Bilogora county. During two years experimental period statistically significant influence of inoculation and liming on forage and dry matteryield was determined. Significantly the lowest yields were determined on untreated plots without liming material. In all untreated plots, significantly lower yields were determined, but significant differences in yields were also obtained by inoculation with different S. meliloti strains, emphasizing the importance of strains selection used for alfalfa inoculation. In both experimental years total forage yield were ranging from 34 t/ha (untreated plots without liming up to 60 t/ha on plots inoculated with strain 2011 and without liming. Values of total dry matter yield for both experimental years ranged from 6.5 t/ha (untreated plots without liming up to 15,7 t/ha on plots inoculated with strain 2011 without liming. Results of this study showed that application of liming materials for acidity removal had positive effect on alfalfa yields in both experimental years and significantly improved alfalfa production on acid soils. The results of this study clearly showed that inoculation with selected S. meliloti strains may improve alfalfa production on acid soils and may contribute to more efficient forage production for dairy farms under particular

  15. Metadata management for distributed first principles calculations in VLab—A collaborative cyberinfrastructure for materials computation

    Science.gov (United States)

    da Silveira, Pedro R. C.; da Silva, Cesar R. S.; Wentzcovitch, Renata M.

    2008-02-01

    This paper describes the metadata and metadata management algorithms necessary to handle the concurrent execution of multiple tasks from a single workflow, in a collaborative service oriented architecture environment. Metadata requirements are imposed by the distributed workflow that calculates thermoelastic properties of materials at high pressures and temperatures. The scientific relevance of this workflow is also discussed. We explain the basic metaphor, the receipt, underlying the metadata management. We show the actual java representation of the receipt, and explain how it is converted to XML in order to be transferred between servers, and stored in a database. We also discuss how the collaborative aspect of user activity on running workflows could potentially lead to race conditions, how this affects requirements on metadata, and how these race conditions are precluded. Finally we describe an additional metadata structure, complementary to the receipts, that contains general information about the workflow.

  16. Metadata distribution algorithm based on directory hash in mass storage system

    Science.gov (United States)

    Wu, Wei; Luo, Dong-jian; Pei, Can-hao

    2008-12-01

    The distribution of metadata is very important in mass storage system. Many storage systems use subtree partition or hash algorithm to distribute the metadata among metadata server cluster. Although the system access performance is improved, the scalability problem is remarkable in most of these algorithms. This paper proposes a new directory hash (DH) algorithm. It treats directory as hash key value, implements a concentrated storage of metadata, and take a dynamic load balance strategy. It improves the efficiency of metadata distribution and access in mass storage system by hashing to directory and placing metadata together with directory granularity. DH algorithm has solved the scalable problems existing in file hash algorithm such as changing directory name or permission, adding or removing MDS from the cluster, and so on. DH algorithm reduces the additional request amount and the scale of each data migration in scalable operations. It enhances the scalability of mass storage system remarkably.

  17. Effects of additive application upon ad libitum intake, in vivo digestibility and nitrogen balance of alfalfa haylage

    Directory of Open Access Journals (Sweden)

    Mladen Knežević

    2009-09-01

    Full Text Available The research objective was to determine the effect of the additive Sill-All application on ad libitum intake, in vivo digestibility and nitrogen balance of alfalfa haylage. About 40 % alfalfa plants was ensiled at the phonological flowering stage into plastic foil-wrapped bales without or with additive (2 L t-1 plant mass. No statistically significant differences were found between alfalfa ensiled without additive and alfalfa ensiled with additive for the content of dry matter (DM (632 g and 631 g DM kg-1 fresh sample, respectively. Alfalfa ensiled without additive contained 921 g organic matter (OM kg-1 DM, which was significantly higher (P<0.001 compared to alfalfa ensiled with additive (902 g OM kg-1 DM. Alfalfa ensiled without additive contained 141 g crude proteins (CP kg-1 DM, which was significantly higher (P<0.001 compared to alfalfa ensiled with additive (139 g CP kg-1 DM. Alfalfa ensiled with additive contained significantly less acid detergent fibers (ADF (P<0.001 compared to alfalfa ensiled without additive (445 g kg-1 DM and 456 g kg-1 DM, respectively and had a lower pH value (P<0.001 (5.29 and 5.56, respectively. No statistically significant differences were found between the studied feeding treatments for ad libitum intake of fresh ration and DM ration, for the measured parameters of digestibility and N balance. It was concluded that addition of the additive to alfalfa haylage led to significant changes in chemical composition; however, changes in chemical composition had no impact on measured biological parameters (ad libitum intake, in vivo digestibility and nitrogen balance.

  18. Metadata a vyhledávání informací na Internetu

    OpenAIRE

    Hlaváčová, Tereza

    2010-01-01

    The aim of this work is to analyze the relationship of metadata and searching on the Internet. In the first part are presented metadata, namely meta tags, metadata schemas and two related projects - digital libraries and the Semantic Web. In the second chapter is introduced the history and development of the Internet search engines. Two search engines are analyzed in detail: Google and Seznam - especially their history, development and how they evaluate pages. The last part is devoted to the ...

  19. Recipes for Semantic Web dog food - The ESWC and ISWC metadata projects

    OpenAIRE

    Möller, Knud; Heath, Tom; Handschuh, Siegfried; Domingue, John

    2007-01-01

    Semantic Web conferences such as ESWC and ISWC offer prime opportunities to test and showcase semantic technologies. Conference metadata about people, papers and talks is diverse in nature and neither too small to be uninteresting or too big to be unmanageable. Many metadata-related challenges that may arise in the Semantic Web at large are also present here. Metadata must be generated from sources which are often unstructured and hard to process, and may originate from many different players...

  20. The Evolution of Metadata from Standards to Semantics in E-Learning Applications

    OpenAIRE

    Al-Khalifa, Hend S.; Davis, Hugh C.

    2006-01-01

    Metadata attempts to describe the content, format, purpose and structure of data. Over the past few years, the IEEE-LOM standard has dominated the metadata world in e-learning applications. However, with the advent of the Semantic Web, e-learning applications are beginning to evolve their metadata representation from these standards by adding semantic structure or by converting entirely to semantic representations of structure. This shift enables the implementation of a range of new tools whi...

  1. A Non-Authoritative Educational Metadata Ontology for Filtering and Recommending Learning Objects

    OpenAIRE

    Recker, Mimi M.; Wiley, David A.

    2001-01-01

    Digital libraries populated with learning objects are becoming popular tools in the creation of instructional technologies. Many current efforts to create standard metadata structures that facilitate the discovery and instructional use of learning objects recommend a single, authoritative metadata record per version of the learning object. However, as we argue in this paper, a single metadata record — particularly one with fields that emphasize knowledge management and technology, while evadi...

  2. Design and Practice on Metadata Service System of Surveying and Mapping Results Based on Geonetwork

    Science.gov (United States)

    Zha, Z.; Zhou, X.

    2011-08-01

    Based on the analysis and research on the current geographic information sharing and metadata service,we design, develop and deploy a distributed metadata service system based on GeoNetwork covering more than 30 nodes in provincial units of China.. By identifying the advantages of GeoNetwork, we design a distributed metadata service system of national surveying and mapping results. It consists of 31 network nodes, a central node and a portal. Network nodes are the direct system metadata source, and are distributed arround the country. Each network node maintains a metadata service system, responsible for metadata uploading and management. The central node harvests metadata from network nodes using OGC CSW 2.0.2 standard interface. The portal shows all metadata in the central node, provides users with a variety of methods and interface for metadata search or querying. It also provides management capabilities on connecting the central node and the network nodes together. There are defects with GeoNetwork too. Accordingly, we made improvement and optimization on big-amount metadata uploading, synchronization and concurrent access. For metadata uploading and synchronization, by carefully analysis the database and index operation logs, we successfully avoid the performance bottlenecks. And with a batch operation and dynamic memory management solution, data throughput and system performance are significantly improved; For concurrent access, , through a request coding and results cache solution, query performance is greatly improved. To smoothly respond to huge concurrent requests, a web cluster solution is deployed. This paper also gives an experiment analysis and compares the system performance before and after improvement and optimization. Design and practical results have been applied in national metadata service system of surveying and mapping results. It proved that the improved GeoNetwork service architecture can effectively adaptive for distributed deployment

  3. Study the effectivness of Metadata elements on web page visibility in public search engines

    OpenAIRE

    Sharif, Atefeh

    2007-01-01

    The purpose of the present research is to measure the effectiveness of metadata elements on the web page visibility in three public search engines: Google, Yahoo, and MSN. The effectiveness of the five metadata elements including HTML title tag, HTML Keywords and Description meta-tags, Title and Subject Dublin Core Metadata Elements, which concentrate on subject representation of the web page, were examined using the experimental method. 84 web pages were designed and submitted in both contro...

  4. HopsFS: Scaling Hierarchical File System Metadata Using NewSQL Databases

    OpenAIRE

    Niazi, Salman; Ismail, Mahmoud; Grohsschmiedt, Steffen; Ronström, Mikael; Haridi, Seif; Dowling, Jim

    2016-01-01

    Recent improvements in both the performance and scalability of shared-nothing, transactional, in-memory NewSQL databases have reopened the research question of whether distributed metadata for hierarchical file systems can be managed using commodity databases. In this paper, we introduce HopsFS, a next generation distribution of the Hadoop Distributed File System (HDFS) that replaces HDFS single node in-memory metadata service, with a distributed metadata service built on a NewSQL database. B...

  5. Preliminary document analyzing and summarizing metadata standards and issues across Europe

    OpenAIRE

    Anderson, David; Delve, Janet; Pinchbeck, Dan; Alemu, Getaneh

    2009-01-01

    This document is a report on the state-of-the-art in metadata standards and approaches in Europe. Metadata are widely recognized as a critical component of digital preservation and it is typically the case that within individual cultural heritage organizations numerous different metadata schemes are employed, each of which aims to capture particular aspects of digital objects. KEEP is particularly focused on emulation as a digital preservation strategy and addresses directly dynamic digital o...

  6. Dr. Hadoop:an infinite scalable metadata management for Hadoop-How the baby elephant becomes immortal

    Institute of Scientific and Technical Information of China (English)

    Dipayan DEV‡; Ripon PATGIRI

    2016-01-01

    In this Exa byte scale era, data increases at an exponential rate. This is in turn generating a massive amount of metadata in the fi le system. Hadoop is the most widely used framework to deal with big data. Due to this growth of huge amount of metadata, however, the efficiency of Hadoop is questioned numerous times by many researchers. Therefore, it is essential to create an efficient and scalable metadata management for Hadoop. Hash-based mapping and subtree partitioning are suitable in distributed metadata management schemes. Subtree partitioning does not uniformly distribute workload among the metadata servers, and metadata needs to be migrated to keep the load roughly balanced. Hash-based mapping suffers from a constraint on the locality of metadata, though it uniformly distributes the load among NameNodes, which are the metadata servers of Hadoop. In this paper, we present a circular metadata management mechanism named dynamic circular metadata splitting (DCMS). DCMS preserves metadata locality using consistent hashing and locality-preserving hashing, keeps replicated metadata for excellent reliability, and dynamically distributes metadata among the NameNodes to keep load balancing. NameNode is a centralized heart of the Hadoop. Keeping the directory tree of all fi les, failure of which causes the single point of failure (SPOF). DCMS removes Hadoop’s SPOF and provides an efficient and scalable metadata management. The new framework is named‘Dr. Hadoop’ after the name of the authors.

  7. Metadata Analysis as a Criterion for Quality in e-Learning

    Directory of Open Access Journals (Sweden)

    Zbigniew Meger

    2012-06-01

    Full Text Available Metadata describes learning objects LO and whole courses which are widely used in various e learning systems. Different specifications of metadata describe schemes, including Dublin Core (DC, IMS and Learning Object Metadata (LOM. They define fields that can be used for qualitative verification of described objects or courses. In this way it will be possible both quick evaluations of subjects included in courses and learning objects LO, as well as structure, accuracy, method of teaching or working. Proper metadata analysis allows the assessment of whole educational process, which is built on the basis of learning objects LO. This enables rapid evaluation of planned or already performed courses of distance learning.

  8. 77 FR 33739 - Announcement of Requirements and Registration for “Health Data Platform Metadata Challenge”

    Science.gov (United States)

    2012-06-07

    ... some cases, the entities and relations in these vocabulary standards are expressed using UML class... expression of metadata definitions and instance data identification, leveraging the relevant open...

  9. The Theory and Implementation for Metadata in Digital Library/Museum

    Directory of Open Access Journals (Sweden)

    Hsueh-hua Chen

    1998-12-01

    Full Text Available Digital Libraries and Museums (DL/M have become one of the important research issues of Library and Information Science as well as other related fields. This paper describes the basic concepts of DL/M and briefly introduces the development of Taiwan Digital Museum Project. Based on the features of various collections, wediscuss how to maintain, to manage and to exchange metadata, especially from the viewpoint of users. We propose the draft of metadata, MICI (Metadata Interchange for Chinese Information , developed by ROSS (Resources Organization and SearchingSpecification team. Finally, current problems and future development of metadata will be touched.[Article content in Chinese

  10. IVOA Recommendation: VOResource: an XML Encoding Schema for Resource Metadata Version 1.03

    CERN Document Server

    Plante, Raymond; Graham, Matthew; Greene, Gretchen; Harrison, Paul; Lemson, Gerard; Linde, Tony; Rixon, Guy; Stebe, Aurelien

    2011-01-01

    This document describes an XML encoding standard for IVOA Resource Metadata, referred to as VOResource. This schema is primarily intended to support interoperable registries used for discovering resources; however, any application that needs to describe resources may use this schema. In this document, we define the types and elements that make up the schema as representations of metadata terms defined in the IVOA standard, Resource Metadata for the Virtual Observatory [Hanicsh et al. 2004]. We also describe the general model for the schema and explain how it may be extended to add new metadata terms and describe more specific types of resources.

  11. A Shared Infrastructure for Federated Search Across Distributed Scientific Metadata Catalogs

    Science.gov (United States)

    Reed, S. A.; Truslove, I.; Billingsley, B. W.; Grauch, A.; Harper, D.; Kovarik, J.; Lopez, L.; Liu, M.; Brandt, M.

    2013-12-01

    The vast amount of science metadata can be overwhelming and highly complex. Comprehensive analysis and sharing of metadata is difficult since institutions often publish to their own repositories. There are many disjoint standards used for publishing scientific data, making it difficult to discover and share information from different sources. Services that publish metadata catalogs often have different protocols, formats, and semantics. The research community is limited by the exclusivity of separate metadata catalogs and thus it is desirable to have federated search interfaces capable of unified search queries across multiple sources. Aggregation of metadata catalogs also enables users to critique metadata more rigorously. With these motivations in mind, the National Snow and Ice Data Center (NSIDC) and Advanced Cooperative Arctic Data and Information Service (ACADIS) implemented two search interfaces for the community. Both the NSIDC Search and ACADIS Arctic Data Explorer (ADE) use a common infrastructure which keeps maintenance costs low. The search clients are designed to make OpenSearch requests against Solr, an Open Source search platform. Solr applies indexes to specific fields of the metadata which in this instance optimizes queries containing keywords, spatial bounds and temporal ranges. NSIDC metadata is reused by both search interfaces but the ADE also brokers additional sources. Users can quickly find relevant metadata with minimal effort and ultimately lowers costs for research. This presentation will highlight the reuse of data and code between NSIDC and ACADIS, discuss challenges and milestones for each project, and will identify creation and use of Open Source libraries.

  12. Studies of Big Data metadata segmentation between relational and non-relational databases

    CERN Document Server

    Golosova, M V; Klimentov, A A; Ryabinkin, E A; Dimitrov, G; Potekhin, M

    2015-01-01

    In recent years the concepts of Big Data became well established in IT. Systems managing large data volumes produce metadata that describe data and workflows. These metadata are used to obtain information about current system state and for statistical and trend analysis of the processes these systems drive. Over the time the amount of the stored metadata can grow dramatically. In this article we present our studies to demonstrate how metadata storage scalability and performance can be improved by using hybrid RDBMS/NoSQL architecture.

  13. Studies of Big Data metadata segmentation between relational and non-relational databases

    Science.gov (United States)

    Golosova, M. V.; Grigorieva, M. A.; Klimentov, A. A.; Ryabinkin, E. A.; Dimitrov, G.; Potekhin, M.

    2015-12-01

    In recent years the concepts of Big Data became well established in IT. Systems managing large data volumes produce metadata that describe data and workflows. These metadata are used to obtain information about current system state and for statistical and trend analysis of the processes these systems drive. Over the time the amount of the stored metadata can grow dramatically. In this article we present our studies to demonstrate how metadata storage scalability and performance can be improved by using hybrid RDBMS/NoSQL architecture.

  14. Aerobic microorganisms associated with alfalfa leafcutter bees (megachile rotundata).

    Science.gov (United States)

    Inglis, G D; Sigler, L; Goette, M S

    1993-09-01

    Characterization of microorganisms associated with alfalfa leaf-cutter bee (Megachile rotundata) nectar, pollen, provisions, larval guts, and frass (excreta) in Alberta demonstrated a varied aerobic microflora. Yeasts were isolated frequently from nectar, pollen, and provisions but rarely from guts or frass. The most prevalent yeast taxa were: Candida bombicola, Cryptococcus albidus, Metschnikowia reukaufii, and Rhodotorula glutinis. Although few filamentous fungi were found in nectar, they were frequently isolated from pollen and provisions; the predominant taxa were Alternaria alternata, Cladosporium cladosporioides, C. herbarum, Epicoccum nigrum, and Penicillium chrysogenum. Bacteria, including species of Bacillus, Corynebacterium, Micrococcus, and the actinomycete Streptomyces, also were prevalent in provisions and/or on pollen. In general, the diversity of microorganisms isolated from alimentary canals and frass was lower than from nectar, pollen, and provisions. Bacillus firmus, B. licheniformis, B. megaterium, B. pumilus, and Streptomyces spp. were the most frequently isolated bacteria, whereas Trichosporonoides megachiliensis was the most common filamentous fungus isolated from larval guts and/or frass. These taxa may be part of the resident microflora of the alimentary canal. Populations of bacteria and filamentous fungi, but not yeasts, were larger from Ascosphaera aggregata-infected larvae than from healthy larvae. However, with the exception of Aspergillus niger and T. megachiliensis in frass from healthy larvae, no taxon of filamentous fungi was conspicuously present or absent in infected larvae, healthy larvae, or their frass. PMID:24190009

  15. Optimization of enzyme-assisted extraction of polysaccharides from alfalfa and its antioxidant activity.

    Science.gov (United States)

    Wang, Shaopu; Dong, Xiaofang; Tong, Jianming

    2013-11-01

    In this present study, an efficient complex enzyme-assisted extraction technology was developed and optimized to extract polysaccharides from alfalfa using four factors at five levels central composite rotatable response surface design (CCRD). The experimental data was fitted to a second order polynomial equation with high coefficient of determination values (R(2)>0.95). The results of statistical analysis showed that the linear and quadratic terms of these four variables had significant effects (Penzyme concentration of 2.5%, 2.0%, 3.0% (weight of alfalfa) of cellulase, papain and pectase, extraction temperature 52.7 °C, extraction pH 3.87, ratio of water to raw material 78.92 mL/g and extraction time 2.73 h. Under the optimal conditions, the experimental extraction yield of alfalfa polysaccharides was 5.05 ± 0.02%, which was well matched with the value (5.09%) predicted by the CCRD model. Moreover, evaluation of the antioxidant activity of polysaccharides from alfalfa in vitro suggested that the polysaccharides had good antioxidant effect, especially scavenging activity for hydroxyl radical and DPPH radical, which indicated that the polysaccharides from alfalfa may be explored as a novel natural antioxidant.

  16. Research Progress of Alfalfa Silage%苜蓿青贮研究进展

    Institute of Scientific and Technical Information of China (English)

    刘振宇; 玉柱; 智建飞; 谢楠; 秦文利; 冯伟; 刘忠宽

    2013-01-01

    As an important protein feed resources, alfalfa silage is of great significance for alfalfa industry and the healthy development of animal husbandry in China.In this paper, the research progress of development history and present situation of alfalfa silage, fermentation promotation, fermentation inhibiting and mixed silage were summarized, and the current main problems in alfalfa silage industry development and future research directions were put forward, in order to provide theoretical and practical references for the alfalfa silage research.%苜蓿作为一种重要的蛋白饲料资源,苜蓿青贮对我国苜蓿产业和畜牧业的健康发展具有重要意义。对苜蓿青贮发展历史与现状以及发酵促进、发酵抑制及混合青贮等研究进行了概述,提出了当前苜蓿青贮产业发展中存在的主要问题和今后的研究方向,以期为苜蓿青贮研究提供理论依据与实践参考。

  17. Yield, chemical composition and persistence of alfalfa on moderately acidic mountain soil

    Directory of Open Access Journals (Sweden)

    Josip Leto

    2006-12-01

    Full Text Available Due to its excellent nutritional characteristics and high yields, alfalfa is the most important forage crop in roughage production. The main limiting factor in global food production is soil acidification. At the moment, about 40% of world agricultural soils are acidic. It is difficult to grow alfalfa on acid soils (pH 0.05. Average DM yield of all cultivars in the year 2000 was 7.07 t/ha, in the year 2001 it was 10.94 t/ha, and finally in the year 2002 it was 12.78 t/ha. Significant differences in DM yields were recorded between cuttings (P0.05. Mean crude protein content was 28.2%, while contents of crude fat, crude fibers and non nitrogen free extract (NFE were 3.73%, 16.15%, 29.19%, respectively. No significant differences in alfalfa ground cover were recorded between cultivars in autumn or in spring in all experimental years (P>0.05. Significant differences in alfalfa ground cover in autumn (P<0.05 and in spring (P<0.01 were recorded between years. The lowest average ground cover was recorded in last experimental year: in the autumn of the year 2001(72.81% and in the spring of the year 2002 (64.37%. All investigated alfalfa cultivars are suitable for growing in similar agroecological conditions.

  18. Accumulation and residue of napropamide in alfalfa (Medicago sativa) and soil involved in toxic response.

    Science.gov (United States)

    Cui, Li E; Yang, Hong

    2011-06-15

    Napropamide belongs to the amide herbicide family and widely used to control weeds in farmland. Intensive use of the herbicide has resulted in widespread contamination to ecosystems. The present study demonstrated an analysis on accumulation of the toxic pesticide napropamide in six genotypes of alfalfa (Medicago sativa), along with biological parameters and its residues in soils. Soil was treated with napropamide at 3 mg kg(-1) dry soil and alfalfa plants were cultured for 10 or 30 d, respectively. The maximum value for napropamide accumulation is 0.426 mg kg(-1) in shoots and 2.444 mg kg(-1) in roots. The napropamide-contaminated soil with alfalfa cultivation had much lower napropamide concentrations than the control (soil without alfalfa cultivation). Also, the content of napropamide residue in the rhizosphere was significantly lower than that in the non-rhizosphere soil. M. sativa exposed to 3 mg kg(-1) napropamide showed inhibited growth. Further analysis revealed that plants treated with napropamide accumulated more reactive oxygen species (O(2)(-) and H(2)O(2)) and less amounts of chlorophyll. However, not all cultivars showed oxidative injury, suggesting that the alfalfa cultivars display different tolerance to napropamide. PMID:21439724

  19. The Role of Proanthocyanidins Complex in Structure and Nutrition Interaction in Alfalfa Forage.

    Science.gov (United States)

    Jonker, Arjan; Yu, Peiqiang

    2016-01-01

    Alfalfa (Medicago sativa L.) is one of the main forages grown in the world. Alfalfa is a winter hardy, drought tolerant, N-fixing legume with a good longevity, high yield, high nutrient levels, high digestibility, unique structural to non-structural components ratio, high dry matter intake, and high animal productivity per hectare. However, its main limitation is its excessively rapid initial rate of protein degradation in the rumen, which results in pasture bloat and inefficient use of protein with consequent excessive excretions of nitrogen into the environment. Proanthocyanidins are secondary plant metabolites that can bind with protein and thereby reduce the rate and extent of ruminal protein degradation. However, these secondary metabolites do not accumulate in alfalfa. This review aims to firstly describe the events involved in the rapid release of protein from alfalfa and its effect on ruminant nutrition, environmental pollution, and pasture bloat; secondly, to describe occurrence, structure, functions and benefits of moderate amounts of proanthocyanidin; and finally, to describe the development of alfalfa which accumulates moderate amounts of proanthocyanidins. The emphasis of this review focuses on the role of proanthocyanidins compounds in structure and nutrition interaction in ruminant livestock systems. PMID:27223279

  20. Proteome analysis of alfalfa roots in response to water deifcit stress

    Institute of Scientific and Technical Information of China (English)

    Rahman Md Atikur; Kim Yong-Goo; AlamIftekhar; LIU Gong-she; Lee Hyoshin; Lee Jeung Joo; Lee Byung-Hyun

    2016-01-01

    To evaluate the response of alfalfa to water deifcit (WD) stress, WD-induced candidates were investigated through a proteomic approach. Alfalfa seedlings were exposed to WD stress for 12 and 15 days respectively, folowed by 3 days re-watering. Water deifcit increased H2O2content, lipid peroxidation, DPPH (1,1-diphenyl-2-picrylhydrazyl)-radical scavenging activity, and the free proline level in alfalfa roots. Root proteins were extracted and separated by two-dimentional polyacrylamide gel electrophoresis (2-DE). A total of 49 WD-responsive proteins were identiifed in alfalfa roots; 25 proteins were reproducibly found to be up-regulated and 24 were down-regulated. Two proteins, namely cytosolic ascorbate peroxidase (APx2) and putative F-box protein were newly detected on 2-DE maps of WD-treated plants. We identiifed several proteins including agamous-like 65, albumin b-32, inward rectifying potassium channel, and auxin-independent growth promoter. The identiifed proteins are involved in a variety of celular functions including calcium signaling, abacisic acid (ABA) biosynthesis, reactive oxygen species (ROS) regulation, transcription/ translation, antioxidant/detoxiifcation/stress defense, energy metabolism, signal transduction, and storage. These results indicate the potential candidates were responsible for adaptive response in alfalfa roots.

  1. The Role of Proanthocyanidins Complex in Structure and Nutrition Interaction in Alfalfa Forage

    Directory of Open Access Journals (Sweden)

    Arjan Jonker

    2016-05-01

    Full Text Available Alfalfa (Medicago sativa L. is one of the main forages grown in the world. Alfalfa is a winter hardy, drought tolerant, N-fixing legume with a good longevity, high yield, high nutrient levels, high digestibility, unique structural to non-structural components ratio, high dry matter intake, and high animal productivity per hectare. However, its main limitation is its excessively rapid initial rate of protein degradation in the rumen, which results in pasture bloat and inefficient use of protein with consequent excessive excretions of nitrogen into the environment. Proanthocyanidins are secondary plant metabolites that can bind with protein and thereby reduce the rate and extent of ruminal protein degradation. However, these secondary metabolites do not accumulate in alfalfa. This review aims to firstly describe the events involved in the rapid release of protein from alfalfa and its effect on ruminant nutrition, environmental pollution, and pasture bloat; secondly, to describe occurrence, structure, functions and benefits of moderate amounts of proanthocyanidin; and finally, to describe the development of alfalfa which accumulates moderate amounts of proanthocyanidins. The emphasis of this review focuses on the role of proanthocyanidins compounds in structure and nutrition interaction in ruminant livestock systems.

  2. A Common Metadata System for Marine Data Portals

    Science.gov (United States)

    Wosniok, C.; Breitbach, G.; Lehfeldt, R.

    2012-04-01

    ), Web Feature Service (WFS) and Sensor Observation Service (SOS), which ensures interoperability and extensibility. In addition, metadata as crucial components for searching and finding information in large data infrastructures is provided via the Catalogue Web Service (CS-W). MDI-DE and COSYNA rely on the metadata information system for marine metadata NOKIS, which reflects a metadata profile tailored for marine data according to the specifications of German coastal authorities. In spite of this common software base, interoperability between the two data collections requires constant alignments of the diverse data processed by the two portals. While monitoring data in the MDI-DE is currently rather campaign-based, COSYNA has to fit constantly evolving time series into metadata sets. With all data following the same metadata profile, we now reach full interoperability between the different data collections. The distributed marine information system provides options to search, find and visualise the harmonised results from continuous monitoring, field campaigns, numerical modeling and other data in one web client.

  3. Implications of season and management protocol on the landscape of gene regulation during diapause development in the Alfalfa Leaf Cutting Bee

    Science.gov (United States)

    : The alfalfa leaf cutting bee, Megachile rotundata, is the world’s most intensively managed solitary bee for commercial pollination. It is the primary pollinator of seed alfalfa, a valuable crop for dairy cow feed. Overwintering bees emerge in the spring during alfalfa bloom to mate an...

  4. Building a scalable event-level metadata service for ATLAS

    International Nuclear Information System (INIS)

    The ATLAS TAG Database is a multi-terabyte event-level metadata selection system, intended to allow discovery, selection of and navigation to events of interest to an analysis. The TAG Database encompasses file- and relational-database-resident event-level metadata, distributed across all ATLAS Tiers. An oracle hosted global TAG relational database, containing all ATLAS events, implemented in Oracle, will exist at Tier O. Implementing a system that is both performant and manageable at this scale is a challenge. A 1 TB relational TAG Database has been deployed at Tier 0 using simulated tag data. The database contains one billion events, each described by two hundred event metadata attributes, and is currently undergoing extensive testing in terms of queries, population and manageability. These 1 TB tests aim to demonstrate and optimise the performance and scalability of an Oracle TAG Database on a global scale. Partitioning and indexing strategies are crucial to well-performing queries and manageability of the database and have implications for database population and distribution, so these are investigated. Physics query patterns are anticipated, but a crucial feature of the system must be to support a broad range of queries across all attributes. Concurrently, event tags from ATLAS Computing System Commissioning distributed simulations are accumulated in an Oracle-hosted database at CERN, providing an event-level selection service valuable for user experience and gathering information about physics query patterns. In this paper we describe the status of the Global TAG relational database scalability work and highlight areas of future direction

  5. Capturing Sensor Metadata for Cross-Domain Interoperability

    Science.gov (United States)

    Fredericks, J.

    2015-12-01

    Envision a world where a field operator turns on an instrument, and is queried for information needed to create standardized encoded descriptions that, together with the sensor manufacturer knowledge, fully describe the capabilities, limitations and provenance of observational data. The Cross-Domain Observational Metadata Environmental Sensing Network (X-DOMES) pilot project (with support from the NSF/EarthCube IA) is taking the first steps needed in realizing this vision. The knowledge of how an observable physical property becomes a measured observation must be captured at each stage of its creation. Each sensor-based observation is made through the use of applied technologies, each with specific limitations and capabilities. Environmental sensors typically provide a variety of options that can be configured differently for each unique deployment, affecting the observational results. By capturing the information (metadata) at each stage of its generation, a more complete and accurate description of data provenance can be communicated. By documenting the information in machine-harvestable, standards-based encodings, metadata can be shared across disciplinary and geopolitical boundaries. Using standards-based frameworks enables automated harvesting and translation to other community-adopted standards, which facilitates the use of shared tools and workflows. The establishment of a cross-domain network of stakeholders (sensor manufacturers, data providers, domain experts, data centers), called the X-DOMES Network, provides a unifying voice for the specification of content and implementation of standards, as well as a central repository for sensor profiles, vocabularies, guidance and product vetting. The ability to easily share fully described observational data provides a better understanding of data provenance and enables the use of common data processing and assessment workflows, fostering a greater trust in our shared global resources. The X-DOMES Network

  6. Standardized metadata for human pathogen/vector genomic sequences.

    Directory of Open Access Journals (Sweden)

    Vivien G Dugan

    Full Text Available High throughput sequencing has accelerated the determination of genome sequences for thousands of human infectious disease pathogens and dozens of their vectors. The scale and scope of these data are enabling genotype-phenotype association studies to identify genetic determinants of pathogen virulence and drug/insecticide resistance, and phylogenetic studies to track the origin and spread of disease outbreaks. To maximize the utility of genomic sequences for these purposes, it is essential that metadata about the pathogen/vector isolate characteristics be collected and made available in organized, clear, and consistent formats. Here we report the development of the GSCID/BRC Project and Sample Application Standard, developed by representatives of the Genome Sequencing Centers for Infectious Diseases (GSCIDs, the Bioinformatics Resource Centers (BRCs for Infectious Diseases, and the U.S. National Institute of Allergy and Infectious Diseases (NIAID, part of the National Institutes of Health (NIH, informed by interactions with numerous collaborating scientists. It includes mapping to terms from other data standards initiatives, including the Genomic Standards Consortium's minimal information (MIxS and NCBI's BioSample/BioProjects checklists and the Ontology for Biomedical Investigations (OBI. The standard includes data fields about characteristics of the organism or environmental source of the specimen, spatial-temporal information about the specimen isolation event, phenotypic characteristics of the pathogen/vector isolated, and project leadership and support. By modeling metadata fields into an ontology-based semantic framework and reusing existing ontologies and minimum information checklists, the application standard can be extended to support additional project-specific data fields and integrated with other data represented with comparable standards. The use of this metadata standard by all ongoing and future GSCID sequencing projects will

  7. Plant density and maturity stage impacts on stem cell wall composition in high quality and non-lodging alfalfa

    Science.gov (United States)

    The concentration of stem cell wall constituents in alfalfa (Medicago sativa L.) can affect energy availability in livestock production systems and energy conversion efficiency when alfalfa is used to produce biofuels. Knowledge of the environmental variability of cell wall concentration and composi...

  8. Effect of aflatoxin B1 on in vitro ruminal fermentation of rations high in alfalfa hay or ryegrass hay

    DEFF Research Database (Denmark)

    Jiang, Y H; Yang, H J; Lund, Peter

    2012-01-01

    A 2 × 4 factorial experiment was conducted to determine the effect of aflatoxin B1 (AFB1) at dose rates of 0, 320, 640, 960 ng/ml on ruminal fermentation of substrates high in alfalfa hay (HA, alfalfa hay: maize meal = 4:1) and ryegrass hay (HR, ryegrass hay: maize meal = 4:1). In vitro dry matter...

  9. Effect of synthetic auxin herbicides on seed development and viability in genetically-engineered glyphosate-resistant alfalfa

    Science.gov (United States)

    Feral populations of cultivated crops have the potential to function as bridges and reservoirs that contribute to the unwanted movement of novel genetically engineered (GE) traits. Recognizing that feral alfalfa has the potential to lower genetic purity in alfalfa seed production fields when it is g...

  10. Screening of Highly Effective Sinorhizobium meliloti Strains for 'Vector' Alfalfa and Testing of Its Competitive Nodulation Ability in the Field

    Institute of Scientific and Technical Information of China (English)

    ZENG Zhao-Hai; CHEN Wen-Xin; HU Yue-Gao; SUI Xin-Hua; CHEN Dan-Ming

    2007-01-01

    Seventeen Sinorhizobium meliloti strains from seven provinces in China were used to screen highly effective strains for alfalfa cultivar in a greenhouse study and their symbiotic relationship and competitive ability were studied in the field.CCBAU30138 was the most effective strain,as evidenced by increase in dry weights.A field experiment showed that the inoculation of alfalfa with CCBAU30138 resulted in increases of 11.9%and 19.6%of dry matter production and crude protein production,respectively,in forage of monocultured plants.The total dry matter yields of alfalfa and tall fescue in binary culture were increased by 16.3%by inoculation of alfalfa with this strain.These results showed that S.Meliloti strain CCBAU30138 was an effective inoculant both in the greenhouse and in the field.The analysis of randomly amplified polymorphic DNA(RAPD)by polymerase chain reaction(PCR)from nodule extracts showed that the strain CCBAU30138 had high competitiveness in the field.It occupied 47.5%of nodules in alfalfa monoculture and 44.4% of nodules in alfalfa-tall fescue binary culture after 20 weeks of growth.In conclusion,a simple system to select highly effective and competitive symbiotic strains specific to alfalfa was established.Using this system.A strain suitable for the alfalfa cultivar'Vector’grown in Wuqiao County of Hebei Province was obtained.

  11. Effects of supplementation level and particle size of alfalfa hay on growth characteristics and rumen development in dairy calves

    NARCIS (Netherlands)

    Mirzaei, M.; Khorvash, M.; Ghorbani, G.R.; Kazemi-Bonchenari, M.; Riasi, A.; Nabipour, A.; Borne, van den J.J.G.C.

    2015-01-01

    The aim of this study was to assess the effects of particle size (PS) of alfalfa hay on growth characteristics and rumen development in dairy calves at two levels of alfalfa supplementation. Fifty newborn dairy calves (42.7 ± 2.2 kg BW) were used in a 2 × 2 factorial arrangement with the factors sup

  12. Molecular Biology Approaches to Solve Forage Crop Limitations: Improving Protein Utilization and Preventing Leaf Loss in Alfalfa

    Science.gov (United States)

    Our laboratory is using molecular biology approaches to better understand and develop solutions to some of the current limitations of alfalfa and other forage crops used in animal and bioenergy production systems. A major limitation of alfalfa is that much of its protein is degraded during harvest a...

  13. The genetic components of extended life expectancy in chilled, post-diapause quiescent Alfalfa Leafcutting Bees, Megachile rotundata

    Science.gov (United States)

    The alfalfa leafcutting bee, Megachile rotundata, a solitary bee native to Eurasia, is the world’s most intensively managed solitary bee and has become the primary pollinator for alfalfa seed production. These bees, when commercially managed, are overwintered as diapausing prepupae under static ther...

  14. Variation in alfalfa leafcutting bee (hymenoptera: megachilidae) reproductive success according to location of nests in United States commercial domiciles.

    Science.gov (United States)

    Low, medium, and high stocking densities of Megachile rotundata, the alfalfa leafcutting bee, were released over four years in three research plots of Utah alfalfa planted at seed-production rates. A low number of bees (46-79% of released) survived the incubation and field emergence processes, and ...

  15. Technical Evaluation Report 40: The International Learning Object Metadata Survey

    Directory of Open Access Journals (Sweden)

    Norm Friesen

    2004-11-01

    Full Text Available A wide range of projects and organizations is currently making digital learning resources (learning objects available to instructors, students, and designers via systematic, standards-based infrastructures. One standard that is central to many of these efforts and infrastructures is known as Learning Object Metadata (IEEE 1484.12.1-2002, or LOM. This report builds on Report #11 in this series, and discusses the findings of the author's recent study of ways in which the LOM standard is being used internationally.

  16. Evolution of the architecture of the ATLAS Metadata Interface (AMI)

    Science.gov (United States)

    Odier, J.; Aidel, O.; Albrand, S.; Fulachier, J.; Lambert, F.

    2015-12-01

    The ATLAS Metadata Interface (AMI) is now a mature application. Over the years, the number of users and the number of provided functions has dramatically increased. It is necessary to adapt the hardware infrastructure in a seamless way so that the quality of service re - mains high. We describe the AMI evolution since its beginning being served by a single MySQL backend database server to the current state having a cluster of virtual machines at French Tier1, an Oracle database at Lyon with complementary replication to the Oracle DB at CERN and AMI back-up server.

  17. A Metadata based Knowledge Discovery Methodology for Seeding Translational Research.

    Science.gov (United States)

    Kothari, Cartik R; Payne, Philip R O

    2015-01-01

    In this paper, we present a semantic, metadata based knowledge discovery methodology for identifying teams of researchers from diverse backgrounds who can collaborate on interdisciplinary research projects: projects in areas that have been identified as high-impact areas at The Ohio State University. This methodology involves the semantic annotation of keywords and the postulation of semantic metrics to improve the efficiency of the path exploration algorithm as well as to rank the results. Results indicate that our methodology can discover groups of experts from diverse areas who can collaborate on translational research projects.

  18. Evolution of the Architecture of the ATLAS Metadata Interface (AMI)

    CERN Document Server

    Odier, Jerome; The ATLAS collaboration; Fulachier, Jerome; Lambert, Fabian

    2015-01-01

    The ATLAS Metadata Interface (AMI) is now a mature application. Over the years, the number of users and the number of provided functions has dramatically increased. It is necessary to adapt the hardware infrastructure in a seamless way so that the quality of service remains high. We describe the evolution from the beginning of the application life, using one server with a MySQL backend database, to the current state in which a cluster of virtual machines on the French Tier 1 cloud at Lyon, an Oracle database also at Lyon, with replication to Oracle at CERN and a back-up server are used.

  19. Twenty-first century metadata operations challenges, opportunities, directions

    CERN Document Server

    Lee Eden, Bradford

    2014-01-01

    It has long been apparent to academic library administrators that the current technical services operations within libraries need to be redirected and refocused in terms of both format priorities and human resources. A number of developments and directions have made this reorganization imperative, many of which have been accelerated by the current economic crisis. All of the chapters detail some aspect of technical services reorganization due to downsizing and/or reallocation of human resources, retooling professional and support staff in higher level duties and/or non-MARC metadata, ""value-a

  20. Generation of Multiple Metadata Formats from a Geospatial Data Repository

    Science.gov (United States)

    Hudspeth, W. B.; Benedict, K. K.; Scott, S.

    2012-12-01

    The Earth Data Analysis Center (EDAC) at the University of New Mexico is partnering with the CYBERShARE and Environmental Health Group from the Center for Environmental Resource Management (CERM), located at the University of Texas, El Paso (UTEP), the Biodiversity Institute at the University of Kansas (KU), and the New Mexico Geo- Epidemiology Research Network (GERN) to provide a technical infrastructure that enables investigation of a variety of climate-driven human/environmental systems. Two significant goals of this NASA-funded project are: a) to increase the use of NASA Earth observational data at EDAC by various modeling communities through enabling better discovery, access, and use of relevant information, and b) to expose these communities to the benefits of provenance for improving understanding and usability of heterogeneous data sources and derived model products. To realize these goals, EDAC has leveraged the core capabilities of its Geographic Storage, Transformation, and Retrieval Engine (Gstore) platform, developed with support of the NSF EPSCoR Program. The Gstore geospatial services platform provides general purpose web services based upon the REST service model, and is capable of data discovery, access, and publication functions, metadata delivery functions, data transformation, and auto-generated OGC services for those data products that can support those services. Central to the NASA ACCESS project is the delivery of geospatial metadata in a variety of formats, including ISO 19115-2/19139, FGDC CSDGM, and the Proof Markup Language (PML). This presentation details the extraction and persistence of relevant metadata in the Gstore data store, and their transformation into multiple metadata formats that are increasingly utilized by the geospatial community to document not only core library catalog elements (e.g. title, abstract, publication data, geographic extent, projection information, and database elements), but also the processing steps used to

  1. Towards Precise Metadata-set for Discovering 3D Geospatial Models in Geo-portals

    Science.gov (United States)

    Zamyadi, A.; Pouliot, J.; Bédard, Y.

    2013-09-01

    Accessing 3D geospatial models, eventually at no cost and for unrestricted use, is certainly an important issue as they become popular among participatory communities, consultants, and officials. Various geo-portals, mainly established for 2D resources, have tried to provide access to existing 3D resources such as digital elevation model, LIDAR or classic topographic data. Describing the content of data, metadata is a key component of data discovery in geo-portals. An inventory of seven online geo-portals and commercial catalogues shows that the metadata referring to 3D information is very different from one geo-portal to another as well as for similar 3D resources in the same geo-portal. The inventory considered 971 data resources affiliated with elevation. 51% of them were from three geo-portals running at Canadian federal and municipal levels whose metadata resources did not consider 3D model by any definition. Regarding the remaining 49% which refer to 3D models, different definition of terms and metadata were found, resulting in confusion and misinterpretation. The overall assessment of these geo-portals clearly shows that the provided metadata do not integrate specific and common information about 3D geospatial models. Accordingly, the main objective of this research is to improve 3D geospatial model discovery in geo-portals by adding a specific metadata-set. Based on the knowledge and current practices on 3D modeling, and 3D data acquisition and management, a set of metadata is proposed to increase its suitability for 3D geospatial models. This metadata-set enables the definition of genuine classes, fields, and code-lists for a 3D metadata profile. The main structure of the proposal contains 21 metadata classes. These classes are classified in three packages as General and Complementary on contextual and structural information, and Availability on the transition from storage to delivery format. The proposed metadata set is compared with Canadian Geospatial

  2. openPDS: protecting the privacy of metadata through SafeAnswers.

    Directory of Open Access Journals (Sweden)

    Yves-Alexandre de Montjoye

    Full Text Available The rise of smartphones and web services made possible the large-scale collection of personal metadata. Information about individuals' location, phone call logs, or web-searches, is collected and used intensively by organizations and big data researchers. Metadata has however yet to realize its full potential. Privacy and legal concerns, as well as the lack of technical solutions for personal metadata management is preventing metadata from being shared and reconciled under the control of the individual. This lack of access and control is furthermore fueling growing concerns, as it prevents individuals from understanding and managing the risks associated with the collection and use of their data. Our contribution is two-fold: (1 we describe openPDS, a personal metadata management framework that allows individuals to collect, store, and give fine-grained access to their metadata to third parties. It has been implemented in two field studies; (2 we introduce and analyze SafeAnswers, a new and practical way of protecting the privacy of metadata at an individual level. SafeAnswers turns a hard anonymization problem into a more tractable security one. It allows services to ask questions whose answers are calculated against the metadata instead of trying to anonymize individuals' metadata. The dimensionality of the data shared with the services is reduced from high-dimensional metadata to low-dimensional answers that are less likely to be re-identifiable and to contain sensitive information. These answers can then be directly shared individually or in aggregate. openPDS and SafeAnswers provide a new way of dynamically protecting personal metadata, thereby supporting the creation of smart data-driven services and data science research.

  3. openPDS: protecting the privacy of metadata through SafeAnswers.

    Science.gov (United States)

    de Montjoye, Yves-Alexandre; Shmueli, Erez; Wang, Samuel S; Pentland, Alex Sandy

    2014-01-01

    The rise of smartphones and web services made possible the large-scale collection of personal metadata. Information about individuals' location, phone call logs, or web-searches, is collected and used intensively by organizations and big data researchers. Metadata has however yet to realize its full potential. Privacy and legal concerns, as well as the lack of technical solutions for personal metadata management is preventing metadata from being shared and reconciled under the control of the individual. This lack of access and control is furthermore fueling growing concerns, as it prevents individuals from understanding and managing the risks associated with the collection and use of their data. Our contribution is two-fold: (1) we describe openPDS, a personal metadata management framework that allows individuals to collect, store, and give fine-grained access to their metadata to third parties. It has been implemented in two field studies; (2) we introduce and analyze SafeAnswers, a new and practical way of protecting the privacy of metadata at an individual level. SafeAnswers turns a hard anonymization problem into a more tractable security one. It allows services to ask questions whose answers are calculated against the metadata instead of trying to anonymize individuals' metadata. The dimensionality of the data shared with the services is reduced from high-dimensional metadata to low-dimensional answers that are less likely to be re-identifiable and to contain sensitive information. These answers can then be directly shared individually or in aggregate. openPDS and SafeAnswers provide a new way of dynamically protecting personal metadata, thereby supporting the creation of smart data-driven services and data science research. PMID:25007320

  4. Metadata Design in the New PDS4 Standards - Something for Everybody

    Science.gov (United States)

    Raugh, Anne C.; Hughes, John S.

    2015-11-01

    The Planetary Data System (PDS) archives, supports, and distributes data of diverse targets, from diverse sources, to diverse users. One of the core problems addressed by the PDS4 data standard redesign was that of metadata - how to accommodate the increasingly sophisticated demands of search interfaces, analytical software, and observational documentation into label standards without imposing limits and constraints that would impinge on the quality or quantity of metadata that any particular observer or team could supply. And yet, as an archive, PDS must have detailed documentation for the metadata in the labels it supports, or the institutional knowledge encoded into those attributes will be lost - putting the data at risk.The PDS4 metadata solution is based on a three-step approach. First, it is built on two key ISO standards: ISO 11179 "Information Technology - Metadata Registries", which provides a common framework and vocabulary for defining metadata attributes; and ISO 14721 "Space Data and Information Transfer Systems - Open Archival Information System (OAIS) Reference Model", which provides the framework for the information architecture that enforces the object-oriented paradigm for metadata modeling. Second, PDS has defined a hierarchical system that allows it to divide its metadata universe into namespaces ("data dictionaries", conceptually), and more importantly to delegate stewardship for a single namespace to a local authority. This means that a mission can develop its own data model with a high degree of autonomy and effectively extend the PDS model to accommodate its own metadata needs within the common ISO 11179 framework. Finally, within a single namespace - even the core PDS namespace - existing metadata structures can be extended and new structures added to the model as new needs are identifiedThis poster illustrates the PDS4 approach to metadata management and highlights the expected return on the development investment for PDS, users and data

  5. Overexpression of a Cytosolic Ascorbate Peroxidase Gene, OsAPX2, Increases Salt Tolerance in Transgenic Alfalfa

    Institute of Scientific and Technical Information of China (English)

    ZHANG Qian; MA Cui; XUE Xin; XU Ming; LI Jing; WU Jin-xia

    2014-01-01

    Alfalfa (Medicago sativa L.) is an important forage crop in the world and it is of great signiifcance for the improvement of its salt tolerance. To improve salt tolerance in alfalfa, a rice ascorbate peroxidase gene (OsAPX2) was introduced into alfalfa using Agrobacterium tumefaciens-mediated transformation with marker gene bar. The different T-DNA insertions in T1 transgenic alfalfa were identiifed by Southern hybridization. Three independent T2 transgenic lines were selected for stress analysis and the results showed that all of them were salt tolerant compared with wild-type plants. The transgenic plants had low levels of H2O2, malondialdehyde and relative electrical conductivity under salt and drought stresses. Moreover, the contents of chlorophyll and proline, and APX activity were high in transgenic plants under salt and drought stresses. Taken together, the overexpression of OsAPX2 enhances salt tolerance in alfalfa through scavenging reactive oxygen species.

  6. The Undergraduate ALFALFA Team: A Model for Involving Undergraduates in Large Astronomy Collaborations

    Science.gov (United States)

    Craig, David W.; Koopmann, Rebecca A.; Haynes, Martha P.; Undergraduate ALFALFA Team, ALFALFA Team

    2016-01-01

    The NSF-sponsored Undergraduate ALFALFA (Arecibo Legacy Fast ALFA) Team (UAT) has allowed faculty and students from a wide range of public and private colleges and especially those with small astronomy programs to learn how science is accomplished in a large collaboration while contributing to the scientific goals of a legacy radio astronomy survey. This effort has been made possible through the collaboration of the ALFALFA PIs and graduate students, Arecibo Observatory staff, and the faculty at 19 undergraduate-focussed institutions. In this talk, we will discuss how the UAT model works for the ALFALFA project and lessons learned from our efforts over the 8 years of grant funding. We will provide suggestions on how the model could be applied to other legacy projects, particularly in such areas as online collaboration and software usage by undergraduates. This work has been supported by NSF grants AST-0724918/0902211, AST-075267/0903394, AST-0725380, and AST-1211005.

  7. [Effects of continuous cropping of wheat and alfalfa on soil enzyme activities and nutrients].

    Science.gov (United States)

    Zhang, Li-Qiong; Hao, Ming-De; Zang, Yi-Fei; Li, Li-Xia

    2014-11-01

    Based on a long-term rotation and fertilization experiment in Changwu, Shaanxi, China, we determined the enzymatic activities and nutrients in soils after 27 years continuous cropping of alfalfa and wheat, respectively. The activities of invertase, urease and phosphatase were not affected by fertilization treatment within each cropping system, but they were significantly higher in the alfalfa continuous cropping system than in the wheat continuous cropping system under each fertilization treatment. The activity of hydrogen peroxidase was not affected by the type of cropping system or fertilization treatment. Across the cropping systems, the activities of soil urease, phosphatase and hydrogen peroxidase were higher while soil invertase activity was lower in N, P and manure (NPM) combined treatment compared with the other fertilization treatments. The accumulations of soil organic matter, total nitrogen and available nitrogen were greater in the alfalfa cropping system than in the wheat continuous cropping system, and the NPM treatment could improve the soil fertility. PMID:25898616

  8. Assessing the Spatial Variability of Alfalfa Yield Using Satellite Imagery and Ground-Based Data

    Science.gov (United States)

    Kayad, Ahmed G.; Al-Gaadi, Khalid A.; Tola, ElKamil; Madugundu, Rangaswamy; Zeyada, Ahmed M.; Kalaitzidis, Chariton

    2016-01-01

    Understanding the temporal and spatial variability in a crop yield is viewed as one of the key steps in the implementation of precision agriculture practices. Therefore, a study on a center pivot irrigated 23.5 ha field in Saudi Arabia was conducted to assess the variability in alfalfa yield using Landsat-8 imagery and a hay yield monitor data. In addition, the study was designed to also explore the potential of predicting the alfalfa yield using vegetation indices. A calibrated yield monitor mounted on a large rectangular hay baler was used to measure the actual alfalfa yield for four alfalfa harvests performed in the period from October 2013 to May 2014. A total of 18 Landsat-8 images, representing different crop growth stages, were used to derive different vegetation indices (VIs). Data from the yield monitor was used to generate yield maps, which illustrated a definite spatial variation in alfalfa yield across the experimental field for the four studied harvests as indicated by the high spatial correlation values (0.75 to 0.97) and the low P-values (4.7E-103 to 8.9E-27). The yield monitor-measured alfalfa actual yield was compared to the predicted yield form the Vis. Results of the study showed that there was a correlation between actual and predicted yield. The highest correlations were observed between actual yield and the predicted using NIR reflectance, SAVI and NDVI with maximum correlation coefficients of 0.69, 0.68 and 0.63, respectively. PMID:27281189

  9. Assessing the Spatial Variability of Alfalfa Yield Using Satellite Imagery and Ground-Based Data.

    Science.gov (United States)

    Kayad, Ahmed G; Al-Gaadi, Khalid A; Tola, ElKamil; Madugundu, Rangaswamy; Zeyada, Ahmed M; Kalaitzidis, Chariton

    2016-01-01

    Understanding the temporal and spatial variability in a crop yield is viewed as one of the key steps in the implementation of precision agriculture practices. Therefore, a study on a center pivot irrigated 23.5 ha field in Saudi Arabia was conducted to assess the variability in alfalfa yield using Landsat-8 imagery and a hay yield monitor data. In addition, the study was designed to also explore the potential of predicting the alfalfa yield using vegetation indices. A calibrated yield monitor mounted on a large rectangular hay baler was used to measure the actual alfalfa yield for four alfalfa harvests performed in the period from October 2013 to May 2014. A total of 18 Landsat-8 images, representing different crop growth stages, were used to derive different vegetation indices (VIs). Data from the yield monitor was used to generate yield maps, which illustrated a definite spatial variation in alfalfa yield across the experimental field for the four studied harvests as indicated by the high spatial correlation values (0.75 to 0.97) and the low P-values (4.7E-103 to 8.9E-27). The yield monitor-measured alfalfa actual yield was compared to the predicted yield form the Vis. Results of the study showed that there was a correlation between actual and predicted yield. The highest correlations were observed between actual yield and the predicted using NIR reflectance, SAVI and NDVI with maximum correlation coefficients of 0.69, 0.68 and 0.63, respectively. PMID:27281189

  10. ARIADNE: a Tracking System for Relationships in LHCb Metadata

    Science.gov (United States)

    Shapoval, I.; Clemencic, M.; Cattaneo, M.

    2014-06-01

    The data processing model of the LHCb experiment implies handling of an evolving set of heterogeneous metadata entities and relationships between them. The entities range from software and databases states to architecture specificators and software/data deployment locations. For instance, there is an important relationship between the LHCb Conditions Database (CondDB), which provides versioned, time dependent geometry and conditions data, and the LHCb software, which is the data processing applications (used for simulation, high level triggering, reconstruction and analysis of physics data). The evolution of CondDB and of the LHCb applications is a weakly-homomorphic process. It means that relationships between a CondDB state and LHCb application state may not be preserved across different database and application generations. These issues may lead to various kinds of problems in the LHCb production, varying from unexpected application crashes to incorrect data processing results. In this paper we present Ariadne - a generic metadata relationships tracking system based on the novel NoSQL Neo4j graph database. Its aim is to track and analyze many thousands of evolving relationships for cases such as the one described above, and several others, which would otherwise remain unmanaged and potentially harmful. The highlights of the paper include the system's implementation and management details, infrastructure needed for running it, security issues, first experience of usage in the LHCb production and potential of the system to be applied to a wider set of LHCb tasks.

  11. Metadata in Multiple Dialects and the Rosetta Stone

    Science.gov (United States)

    Habermann, T.; Monteleone, K.; Armstrong, E. M.; White, B.

    2012-12-01

    As data are shared across multiple communities and re-used in unexpected ways, it is critical to be able to share metadata about who collected and stewarded the data; where the data are available; how the data were collected and processed; and, how they were used in the past. It is even more critical that the new tools can access this information and present it in ways that new users can understand and, if necessary, integrate into their analyses. Unfortunately, as communities develop and use conventions for these metadata, it becomes more and more difficult to share them across community boundaries. This is true even though these conventions are really dialects of a common documentation language that share many important concepts. Breaking down these barriers requires developing community consensus about these concepts and tools for translating between common representations. Ontologies and connections between them have been used to address this problem across datasets from multiple disciplines. Can these tools help solve similar problems with documentation?

  12. Sharing Images Intelligently: The Astronomical Visualization Metadata Standard

    Science.gov (United States)

    Hurt, Robert L.; Christensen, L.; Gauthier, A.

    2006-12-01

    The astronomical education and public outreach (EPO) community plays a key role in conveying the results of scientific research to the general public. A key product of EPO development is a variety of non-scientific public image resources, both derived from scientific observations and created as artistic visualizations of scientific results. This refers to general image formats such as JPEG, TIFF, PNG, GIF, not scientific FITS datasets. Such resources are currently scattered across the internet in a variety of galleries and archives, but are not searchable in any coherent or unified way. Just as Virtual Observatory standards open up all data archives to a common query engine, the EPO community will benefit greatly from a similar mechanism for image search and retrieval. A new standard has been developed for astronomical imagery defining a common set of content fields suited for the needs of astronomical visualizations. This encompasses images derived from data, artist's conceptions, simulations, photography, and can be ultimately extensible to video products. The first generation of tools are now available to tag images with this metadata, which can be embedded with the image file using an XML-based format that functions similarly to a FITS header. As image collections are processed to include astronomy visualization metadata tags, extensive information providing educational context, credits, data sources, and even coordinate information will be readily accessible for uses spanning casual browsing, publication, and interactive media systems.

  13. Event metadata records as a testbed for scalable data mining

    International Nuclear Information System (INIS)

    At a data rate of 200 hertz, event metadata records ('TAGs,' in ATLAS parlance) provide fertile grounds for development and evaluation of tools for scalable data mining. It is easy, of course, to apply HEP-specific selection or classification rules to event records and to label such an exercise 'data mining,' but our interest is different. Advanced statistical methods and tools such as classification, association rule mining, and cluster analysis are common outside the high energy physics community. These tools can prove useful, not for discovery physics, but for learning about our data, our detector, and our software. A fixed and relatively simple schema makes TAG export to other storage technologies such as HDF5 straightforward. This simplifies the task of exploiting very-large-scale parallel platforms such as Argonne National Laboratory's BlueGene/P, currently the largest supercomputer in the world for open science, in the development of scalable tools for data mining. Using a domain-neutral scientific data format may also enable us to take advantage of existing data mining components from other communities. There is, further, a substantial literature on the topic of one-pass algorithms and stream mining techniques, and such tools may be inserted naturally at various points in the event data processing and distribution chain. This paper describes early experience with event metadata records from ATLAS simulation and commissioning as a testbed for scalable data mining tool development and evaluation.

  14. Metadata In, Library Out. A Simple, Robust Digital Library System

    Directory of Open Access Journals (Sweden)

    Tonio Loewald

    2010-06-01

    Full Text Available Tired of being held hostage to expensive systems that did not meet our needs, the University of Alabama Libraries developed an XML schema-agnostic, light-weight digital library delivery system based on the principles of "Keep It Simple, Stupid!" Metadata and derivatives reside in openly accessible web directories, which support the development of web agents and new usability software, as well as modification and complete retrieval at any time. The file name structure is echoed in the file system structure, enabling the delivery software to make inferences about relationships, sequencing, and complex object structure without having to encapsulate files in complex metadata schemas. The web delivery system, Acumen, is built of PHP, JSON, JavaScript and HTML5, using MySQL to support fielded searching. Recognizing that spreadsheets are more user-friendly than XML, an accompanying widget, Archivists Utility, transforms spreadsheets into MODS based on rules selected by the user. Acumen, Archivists Utility, and all supporting software scripts will be made available as open source.

  15. DataNet: A flexible metadata overlay over file resources

    CERN Document Server

    CERN. Geneva

    2014-01-01

    Managing and sharing data stored in files results in a challenge due to data amounts produced by various scientific experiments [1]. While solutions such as Globus Online [2] focus on file transfer and synchronization, in this work we propose an additional layer of metadata over file resources which helps to categorize and structure the data, as well as to make it efficient in integration with web-based research gateways. A basic concept of the proposed solution [3] is a data model consisting of entities built from primitive types such as numbers, texts and also from files and relationships among different entities. This allows for building complex data structure definitions and mix metadata and file data into a single model tailored for a given scientific field. A data model becomes actionable after being deployed as a data repository which is done automatically by the proposed framework by using one of the available PaaS (platform-as-a-service) platforms and is exposed to the world as a REST service, which...

  16. Networking environmental metadata: a pilot project for the Mediterranean Region

    Science.gov (United States)

    Bonora, N.; Benito, M.; Abou El-Magd, I.; Mazzetti, P.; Ndong, C.

    2012-04-01

    To better exploit any environmental dataset it is necessary to provide detailed information (metadata) capable to furnish the best data description. Operating environmental data and information networking requires the long-term investment of financial and human resources. As these resources are scarce, ensuring sustainability can be a struggle. Then, to use more effectively human and economic resources and to avoid duplication, it is essential to test existing models and, where appropriate, replicate strategies and experiences. For the above reasons, it has been programmed to pilot a project to implement and test a metadata catalogue's networking, involving Countries afferent the Mediterranean Region, to demonstrate that the adoption of open source and free software and international interoperability standards can contribute to the alignment of I&TC resources to achieve environmental information sharing. This pilot, planned in the frame of the EGIDA FP7 European Project, aims to support the implementation of a replication methodology for the establishment of national/regional environmental information nodes on the bases of the System of Systems architecture concept, to support the exchange of environmental information in the frame of the Barcelona Convention and to incept a Mediterranean scale joint contribution to GEOSS focusing on partnership, infrastructures and products. To establish the partnership and to conduce interoperability tests, this pilot project build on the Info-RAC (Information and Communication Activity Centre of the United Nation Environmental Programme - Mediterranean Action Plan) and GEO (Group on Earth Observations) networks.

  17. The Optical Luminosity Function of Void Galaxies in the SDSS and ALFALFA Surveys

    Science.gov (United States)

    Moorman, Crystal M.; Vogeley, Michael S.; Hoyle, Fiona; Pan, Danny C.; Haynes, Martha P.; Giovanelli, Riccardo

    2015-09-01

    We measure the r-band galaxy luminosity function (LF) across environments over the redshift range 0 ALFALFA). We find that the global LF of the ALFALFA sample is not well fit by a Schechter function because of the presence of a wide dip in the LF around Mr = -18 and an upturn at fainter magnitudes (α ˜ -1.47). We compare the H i selected r-band LF to various LFs of optically selected populations to determine where the H i selected optical LF obtains its shape. We find that sample selection plays a large role in determining the shape of the LF.

  18. Black Leaf and Stem of Alfalfa Caused by Phoma medicaginis Malbr & Roum. var. medicaginis Boerema

    Directory of Open Access Journals (Sweden)

    Latif R. Susuri

    2003-03-01

    Full Text Available Phoma medicaginis has recently been spreading on alfalfa causing black leaf and stem in irrigation fields near Prizren. The average number of lesions is from 18 up to 30 on leaves with an average diameter of 1-10 mm. The average size of pycnidia from diseased alfalfa leaves, stems and PDA is 325 x 338 μm, whereas the average size of pycnidiospores is 7.3 x 3.6 μm. Maximum spore production in average was on PDA 140.9 x 104/ml.

  19. Evaluation of Selection Indices for Alfalfa (Medicago sativa L.

    Directory of Open Access Journals (Sweden)

    Hassan MONIRIFAR

    2010-03-01

    Full Text Available In order to evaluate the efficiency of selection indices in alfalfa improvement, an experiment was conducted from 2000 to 2007 at East Azarbaijan Agricultural and Natural Resources Research Center, Iran. A set of 29 native ecotypes, which were collected in 2000 and 2001 from Azerbaijan (Iran, together with one improved variety were used to conduct a polycross nursery. For the purpose of random mating, a randomized complete block design was used with 12 replications arranged in this nursery. The resulting 30 half-sib families were planted individually in pots and the 30 days old seedlings were transplanted to the field in May, 2004. Each 3-row plot consisted of 45 HS plants. Several traits, such as individual plants� fresh weight and individual plants� dry weight (IPFW, IPDW, number of shoots per plant (NS and plant height (PH in each harvest and also, days until 10% flowering, the ratio of fresh and dry weight of leaves/plant and size of trifoliate leaves were measured for three cropping seasons. The results of analysis of variance showed large variation among polycross progenies. Six selection indices (Ii with different number of traits at adult plant stage were evaluated. Based on the result of this investigation, if number of shoots and height of adult plant, excluding yield, are recorded, I2 is suggested. If, in addition to fresh yield, height of adult plant is measured, I6 is recommended. I4 is useful when number of shoots and plant height with dry yield are included in the index. In conclusion, the importance of mature plant traits in selection indices was in the order of yield > plant height > number of shoots. The results provided more evidence that selection indices incorporating the component of dry yield are more advantageous. The most efficient selection index consisted of NS, IPDW and PH, having a relative efficiency of 280%.

  20. The spreading of Alfalfa mosaic virus in lavandin in Croatia

    Directory of Open Access Journals (Sweden)

    Ivana Stanković

    2014-06-01

    Full Text Available survey was conducted in 2012 and 2013 to detect the presence and distribution of Alfalfa mosaic virus (AMV in lavandin crops growing in continental parts of Croatia. A total of 73 lavandin samples from six crops in different localities were collected and analyzed for the presence of AMV and Cucumber mosaic virus (CMV using commercial double-antibody sandwich (DAS-ELISA kits. AMV was detected serologically in 62 samples collected at three different localities, and none of the samples tested positive for CMV. For further analyses, six selected samples of naturally infected lavandin plants originating from different localities were mechanically transmitted to test plants: Chenopodium quinoa, C. amaranticolor, Nicotiana benthamiana and Ocimum basilicum, confirming the infectious nature of the disease. Molecular detection was performed by amplification of a 751 bp fragment in all tested samples, using the specific primers CP AMV1/CP AMV2 that amplify the part of the coat protein (CP gene and 3’-UTR. The RT-PCR products derived from the isolates 371-13 and 373-13 were sequenced (KJ504107 and KJ504108, respectively and compared with the AMV sequences available in GenBank. CP sequence analysis, conducted using the MEGA5 software, revealed that the isolate 371-13 had the highest nucleotide identity of 99.5% (100% amino acid identity with an isolate from Argentina originating from Medicago sativa (KC881010, while the sequence of isolate 373-13 had the highest identity with an Italian AMV isolate from Lavandula stoechas (FN667967 of 98.6% (99% amino acid identity. Phylogenetic analysis revealed the clustering of selected isolates into four molecular groups and the lavandin AMV isolates from Croatia grouped into two distinct groups, implying a significant variability within the AMV lavandin population.

  1. iLOG: A Framework for Automatic Annotation of Learning Objects with Empirical Usage Metadata

    Science.gov (United States)

    Miller, L. D.; Soh, Leen-Kiat; Samal, Ashok; Nugent, Gwen

    2012-01-01

    Learning objects (LOs) are digital or non-digital entities used for learning, education or training commonly stored in repositories searchable by their associated metadata. Unfortunately, based on the current standards, such metadata is often missing or incorrectly entered making search difficult or impossible. In this paper, we investigate…

  2. An Assistant for Loading Learning Object Metadata: An Ontology Based Approach

    Science.gov (United States)

    Casali, Ana; Deco, Claudia; Romano, Agustín; Tomé, Guillermo

    2013-01-01

    In the last years, the development of different Repositories of Learning Objects has been increased. Users can retrieve these resources for reuse and personalization through searches in web repositories. The importance of high quality metadata is key for a successful retrieval. Learning Objects are described with metadata usually in the standard…

  3. Batch Metadata Editing - Dspace 1.6: a workshop/tutorial to inform and build skills

    OpenAIRE

    Hayes, Leonie; Lewis, Stuart; Newton-Wade, Vanessa

    2010-01-01

    A new feature of the DSpace 1.6 Software is "Batch Metadata Editing". It gives Repository staff the ability to export metadata and change it easily for re-upload into the system. Once you try this "Data Entry" will never be the same.

  4. Characterization of Educational Resources in e-Learning Systems Using an Educational Metadata Profile

    Science.gov (United States)

    Solomou, Georgia; Pierrakeas, Christos; Kameas, Achilles

    2015-01-01

    The ability to effectively administrate educational resources in terms of accessibility, reusability and interoperability lies in the adoption of an appropriate metadata schema, able of adequately describing them. A considerable number of different educational metadata schemas can be found in literature, with the IEEE LOM being the most widely…

  5. SCEC Community Modeling Environment (SCEC/CME) - Data and Metadata Management Issues

    Science.gov (United States)

    Minster, J.; Faerman, M.; Ely, G.; Maechling, P.; Gupta, A.; Xin, Q.; Kremenek, G.; Shkoller, B.; Olsen, K.; Day, S.; Moore, R.

    2003-12-01

    One of the goals of the SCEC Community Modeling Environment is to facilitate the execution of substantial collections of large numerical simulations. Since such simulations are resource-intensive, and can generate extremely large outputs, implementing this concept raises a host of data and metadata management challenges. Due to the high computational cost involved in running these simulations, one must balance the cost of repeating such simulations against the burden of archiving the produced datasets making them accessible for future use such as post processing or visualization, without the need of re-computation. Further, a carefully selected collection of such data sets might be used as benchmarks for assessing accuracy and performance of future simulations, developing post-processing software such as visualization tools, and testing data and metadata management strategies. The problem is rapidly compounded if one contemplates the possibility of computing ensemble averages for simulations of complex nonlinear systems. The definition and organization of a complete set of metadata to describe fully any given simulation is a surprisingly complex task, which we approach from the point of view of developing a community digital library, which provides the means to organize the material, as well as standard metadata attributes. Web-based discovery mechanisms are then used to support browsing and retrieval of data. A key component is the selection of appropriate descriptive metadata. We compare existing metadata standards from the digital library community, federal standards, and discipline specific metadata attributes. The digital library community has developed a standard for organizing metadata, called the Metadata Encoding and Transmission Standard (METS). This schema supports descriptive (provenance), administrative (location), structural (component relationships), and behavioral (display and manipulation applications). The organization can be augmented with

  6. Western Samoa.

    Science.gov (United States)

    1985-12-01

    This discussion of Western Samoa, which lies 2575 km northeast of Auckland, New Zealand, focuses on the following: geography; the people; history; government; political conditions; the economy; foreign relations; and relations the US. The population of Western Samoa, as of 1985, totals 163,000 with an annual growth rate of 0.9%. The infant mortality rate is 13/1000; life expectancy is 65 years. The main islands are formed ranges of extinct volcanoes. Volcanic activity last occurred in 1911. More than 2000 years age, waves of Polynesians migrated from Southeast Asia to the Samoan Islands. Samoans are the 2nd largest Polynesian group, after the Maoris of New Zealand, and speak a Polynesian dialect. Samoans have tended to retain their traditional ways despite exposure to European influence for more than 150 years. Most Samoans live within the traditional social system based on an extended family group, headed by a chief. Western Samoans are Christian. Education is free but not compulsory. In 1967, 95% of the children of primary school age attended school. From 1947 to 1961, a series of constitutional advances, assisted by visits from UN missions, brought Western Samoa from dependent status to self-government and finally to independence. The 1960 constitution is based on the British pattern of parliamentary democracy, modified to take Samoan customs into account. The present head of state holds his position for life. Future heads of state will be elected by the Legislative Assembly for 5-year terms. The Parliament consists of the Legislative Assembly and the head of state. The Supreme Court is the superior court of record and has full jurisdiction in civil, criminal, and constitutional matters. The "matai" of chief system still dominates the politics of Western Samoa, although several political parties have been formed and seem to be taking root. The "matai" system is a predominantly conservative force but does provide for change. Western Samoa is predominantly

  7. An inconvenient truth : file-level metadata and in-file metadata caching in the (file-agnostic) ATLAS event store.

    Energy Technology Data Exchange (ETDEWEB)

    Malon, D.; van Gemmeren, P.; Hawkings, R.; Schaffer, A.; High Energy Physics; CERN; Univ. Paris-Sud

    2008-01-01

    In the ATLAS event store, files are sometimes 'an inconvenient truth.' From the point of view of the ATLAS distributed data management system, files are too small - datasets are the units of interest. From the point of view of the ATLAS event store architecture, files are simply a physical clustering optimization: the units of interest are event collections - sets of events that satisfy common conditions or selection predicates - and such collections may or may not have been accumulated into files that contain those events and no others. It is nonetheless important to maintain file-level metadata, and to cache metadata in event data files. When such metadata may or may not be present in files, or when values may have been updated after files are written and replicated, a clear and transparent model for metadata retrieval from the file itself or from remote databases is required. In this paper we describe how ATLAS reconciles its file and non-file paradigms, the machinery for associating metadata with files and event collections, and the infrastructure for metadata propagation from input to output for provenance record management and related purposes.

  8. An inconvenient truth: file-level metadata and in-file metadata caching in the (file-agnostic) ATLAS event store

    Energy Technology Data Exchange (ETDEWEB)

    Malon, D; Gemmeren, P van [Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States); Hawkings, R [European Organization for Nuclear Research, CERN CH-1211 Geneve 23 (Switzerland); Schaffer, A [LAL, Univ Paris-Sud, IN2P3/CNRS, Orsay (France)], E-mail: malon@anl.gov

    2008-07-15

    In the ATLAS event store, files are sometimes 'an inconvenient truth'. From the point of view of the ATLAS distributed data management system, files are too small-datasets are the units of interest. From the point of view of the ATLAS event store architecture, files are simply a physical clustering optimization: the units of interest are event collections-sets of events that satisfy common conditions or selection predicates-and such collections may or may not have been accumulated into files that contain those events and no others. It is nonetheless important to maintain file-level metadata, and to cache metadata in event data files. When such metadata may or may not be present in files, or when values may have been updated after files are written and replicated, a clear and transparent model for metadata retrieval from the file itself or from remote databases is required. In this paper we describe how ATLAS reconciles its file and non-file paradigms, the machinery for associating metadata with files and event collections, and the infrastructure for metadata propagation from input to output for provenance record management and related purposes.

  9. OAI-PMH repositories : quality issues regarding metadata and protocol compliance, tutorial 1

    CERN Document Server

    CERN. Geneva; Cole, Tim

    2005-01-01

    This tutorial will provide an overview of emerging guidelines and best practices for OAI data providers and how they relate to expectations and needs of service providers. The audience should already be familiar with OAI protocol basics and have at least some experience with either data provider or service provider implementations. The speakers will present both protocol compliance best practices and general recommendations for creating and disseminating high-quality "shareable metadata". Protocol best practices discussion will include coverage of OAI identifiers, date-stamps, deleted records, sets, resumption tokens, about containers, branding, errors conditions, HTTP server issues, and repository lifecycle issues. Discussion of what makes for good, shareable metadata will cover topics including character encoding, namespace and XML schema issues, metadata crosswalk issues, support of multiple metadata formats, general metadata authoring recommendations, specific recommendations for use of Dublin Core elemen...

  10. Review of Metadata Elements within the Web Pages Resulting from Searching in General Search Engines

    Directory of Open Access Journals (Sweden)

    Sima Shafi’ie Alavijeh

    2009-12-01

    Full Text Available The present investigation was aimed to study the scope of presence of Dublin Core metadata elements and HTML meta tags in web pages. Ninety web pages were chosen by searching general search engines (Google, Yahoo and MSN. The scope of metadata elements (Dublin Core and HTML Meta tags present in these pages as well as existence of a significant correlation between presence of meta elements and type of search engines were investigated. Findings indicated very low presence of both Dublin Core metadata elements and HTML meta tags in the pages retrieved which in turn illustrates the very low usage of meta data elements in web pages. Furthermore, findings indicated that there are no significant correlation between the type of search engine used and presence of metadata elements. From the standpoint of including metadata in retrieval of web sources, search engines do not significantly differ from one another.

  11. Metadata in the changing learning environment: developing skills to achieve the blue skies

    Directory of Open Access Journals (Sweden)

    Juanita Foster-Jones

    2002-12-01

    Full Text Available This short paper will examine the importance of metadata and its role in the changing learning environment, beginning with an introduction about what metadata is, and the benefits to be gained from applying it to all academic resources. Two Open University projects, Portfolio and the Reusable Educational Software Library, will be described and used to illustrate how the IMS Learning Resource Metadata scheme is being applied, and the issues that have been encountered by the Open University and how it is attempting to resolve them. The need for change in organizational culture so that metadata becomes part of the creation process, rather than an afterthought, will then be discussed The paper concludes with a glimpse into the blue skies of the future - where all resources will have metadata as standard practice, and institutions can share and utilize their resources effectively.

  12. Growing a Tree in the Forest: Constructing Folksonomies by Integrating Structured Metadata

    CERN Document Server

    Plangprasopchok, Anon; Getoor, Lise

    2010-01-01

    Many social Web sites allow users to annotate the content with descriptive metadata, such as tags, and more recently to organize content hierarchically. These types of structured metadata provide valuable evidence for learning how a community organizes knowledge. For instance, we can aggregate many personal hierarchies into a common taxonomy, also known as a folksonomy, that will aid users in visualizing and browsing social content, and also to help them in organizing their own content. However, learning from social metadata presents several challenges, since it is sparse, shallow, ambiguous, noisy, and inconsistent. We describe an approach to folksonomy learning based on relational clustering, which exploits structured metadata contained in personal hierarchies. Our approach clusters similar hierarchies using their structure and tag statistics, then incrementally weaves them into a deeper, bushier tree. We study folksonomy learning using social metadata extracted from the photo-sharing site Flickr, and demon...

  13. Minimizing the time and cost of production of transgenic alfalfa libraries using the highly efficient completely sequenced vector pPZP200BAR.

    Science.gov (United States)

    Jozefkowicz, Cintia; Bottero, Emilia; Pascuan, Cecilia; Pagano, Elba; Ayub, Nicolás Daniel; Soto, Gabriela

    2016-09-01

    Alfalfa is the most important forage legume worldwide. However, similar to other minor forage crops, it is usually harvested along with weeds, which decrease its nutrient quality and thus reduce its high value in the market. In addition, weeds reduce alfalfa yield by about 50 %. Although weeds are the limiting factor for alfalfa production, little progress has been made in the incorporation of herbicide-tolerant traits into commercial alfalfa. This is partially due to the high times and costs needed for the production of vast numbers of transgenic alfalfa events as an empirical approach to bypass the random transgenic silencing and for the identification of an event with optimal transgene expression. In this focus article, we report the complete sequence of pPZP200BAR and the extremely high efficiency of this binary vector in alfalfa transformation, opening the way for rapid and inexpensive production of transgenic events for alfalfa improvement public programs.

  14. Minimizing the time and cost of production of transgenic alfalfa libraries using the highly efficient completely sequenced vector pPZP200BAR.

    Science.gov (United States)

    Jozefkowicz, Cintia; Bottero, Emilia; Pascuan, Cecilia; Pagano, Elba; Ayub, Nicolás Daniel; Soto, Gabriela

    2016-09-01

    Alfalfa is the most important forage legume worldwide. However, similar to other minor forage crops, it is usually harvested along with weeds, which decrease its nutrient quality and thus reduce its high value in the market. In addition, weeds reduce alfalfa yield by about 50 %. Although weeds are the limiting factor for alfalfa production, little progress has been made in the incorporation of herbicide-tolerant traits into commercial alfalfa. This is partially due to the high times and costs needed for the production of vast numbers of transgenic alfalfa events as an empirical approach to bypass the random transgenic silencing and for the identification of an event with optimal transgene expression. In this focus article, we report the complete sequence of pPZP200BAR and the extremely high efficiency of this binary vector in alfalfa transformation, opening the way for rapid and inexpensive production of transgenic events for alfalfa improvement public programs. PMID:27447893

  15. 数据仓库中的元数据与CWM规范%Metadata in Data Warehouse and CWM Specification

    Institute of Scientific and Technical Information of China (English)

    张丽娟; 李舟军; 陈火旺

    2003-01-01

    Metadata plays a very important role in data warehouse. Metadata helps developers and administrators develop, maintain and manage data warehouse, it also helps end users understand, acquire and analyze data. In this paper contents and functions about metadata are introduced,and CWM specification advanced by OMG is discussed.

  16. NERIES: Seismic Data Gateways and User Composed Datasets Metadata Management

    Science.gov (United States)

    Spinuso, Alessandro; Trani, Luca; Kamb, Linus; Frobert, Laurent

    2010-05-01

    One of the NERIES EC project main objectives is to establish and improve the networking of seismic waveform data exchange and access among four main data centers in Europe: INGV, GFZ, ORFEUS and IPGP. Besides the implementation of the data backbone, several investigations and developments have been conducted in order to offer to the users the data available from this network, either programmatically or interactively. One of the challenges is to understand how to enable users` activities such as discovering, aggregating, describing and sharing datasets to obtain a decrease in the replication of similar data queries towards the network, exempting the data centers to guess and create useful pre-packed products. We`ve started to transfer this task more and more towards the users community, where the users` composed data products could be extensively re-used. The main link to the data is represented by a centralized webservice (SeismoLink) acting like a single access point to the whole data network. Users can download either waveform data or seismic station inventories directly from their own software routines by connecting to this webservice, which routes the request to the data centers. The provenance of the data is maintained and transferred to the users in the form of URIs, that identify the dataset and implicitly refer to the data provider. SeismoLink, combined with other webservices (eg EMSC-QuakeML earthquakes catalog service), is used from a community gateway such as the NERIES web portal (http://www.seismicportal.eu). Here the user interacts with a map based portlet which allows the dynamic composition of a data product, binding seismic event`s parameters with a set of seismic stations. The requested data is collected by the back-end processes of the portal, preserved and offered to the user in a personal data cart, where metadata can be generated interactively on-demand. The metadata, expressed in RDF, can also be remotely ingested. They offer rating

  17. Processed Methods of Alfalfa in Rainy Season%雨季苜蓿草加工的几种途径

    Institute of Scientific and Technical Information of China (English)

    向金城; 曹致中; 仇亨

    2014-01-01

    针对苜蓿草在雨季容易发霉腐烂的问题,笔者提出了青贮、烘干、榨汁后烘干及汁液提取叶蛋白等可行的加工贮存途径。青贮中不论是否添加玉米粉、乳酸、乙酸及乳酸菌接种剂,只要晾晒至半干(含水量50%~60%)铡碎、压紧、隔绝空气,进行半干青贮,都能获得优质青贮苜蓿。%Feasible approaches to preventing alfalfa from decaying during wet seasons were proposed. These approaches include making alfalfa silage, making alfalfa hay and making hay after the juice in alfalfa is extracted. The extracted juice from alfalfa is used to make leaf proteins. When making the alfalfa silage, it is not important whether corn lfour, lactic acid, acetic acid or lactic acid bacteria inoculant are added in the raw materials, as long as alfalfa foliage is pre-dried ( 50%~60%water content), ifnely chopped and ifrmly pressed (to remove air), the high quality foliage/semi-foliage can always be achieved.

  18. Low temperature stress during pupal development and its effects on adult performance in alfalfa leafcutting bees

    Science.gov (United States)

    Megachile rotundata, commonly known as the alfalfa leafcutting bee, is a key alternative pollinator. Farmers store pupal M. rotundata over the winter inside a 6°C incubator and then place the pupal bees into incubators at 29°C to initiate adult development. Their goal is to time adult bee emergenc...

  19. Transcriptional regulation of temperature stress response during development in the alfalfa leafcutting bee, Megachile rotundata

    Science.gov (United States)

    Insects can be significantly affected by temperature induced stress. While evidence of the physiological consequences of temperature stress is growing, very little is known about how insects respond at the genetic level to these stressors. The alfalfa leafcutting bee, Megachile rotundata, an emergin...

  20. Best Phd thesis Prize : Statistical analysis of ALFALFA galaxies: insights in galaxy

    NARCIS (Netherlands)

    Papastergis, E.

    2013-01-01

    We use the rich dataset of local universe galaxies detected by the ALFALFA 21cm survey to study the statistical properties of gas-bearing galaxies. In particular, we measure the number density of galaxies as a function of their baryonic mass ("baryonic mass function") and rotational velocity ("veloc

  1. Evaluation of subsurface drip irrigation design and management parameters for alfalfa

    NARCIS (Netherlands)

    M.M. Kandelous; T. Kamai; J.A. Vrugt; J. Šimůnek; B. Hanson; J.W. Hopmans

    2012-01-01

    Alfalfa is one of the most cultivated crops in the US, and is being used as livestock feed for the dairy, beef, and horse industries. About nine percent of that is grown in California, yet there is an increasing concern about the large amounts of irrigation water required to attain maximum yield. We

  2. Enhancing forage yields and soil conservation by interseeding alfalfa into silage corn

    Science.gov (United States)

    Recent field studies have identified prohexadione-calcium (PHD) as an effective plant growth regulator for enhancing the establishment of alfalfa interseeded into corn as a dual-purpose cover and forage crop. Foliar applications of PHD on seedlings doubled or tripled stand survival of interseeded al...

  3. Correlation of fermentation characteristics with intake and digestibility of alfalfa silage in gestating ewes

    Science.gov (United States)

    Baled silage production provides benefits to farmers because it reduces leaf losses, and requires a shorter wilting time, thereby limiting risks of exposure to rain compared with making hay. Our objective was to investigate the correlation of alfalfa silage fermentation parameters with intake and di...

  4. First report of Alfalfa mosaic virus infecting basil (Ocimum basilicum L.) in California.

    Science.gov (United States)

    Basil (Ocimum basilicum L.) plants collected from a field in Imperial County, CA in May, 2011 were found to exhibit yellowing, chlorotic sectors and spots on leaves, resulting in plants being unmarketable. Total nucleic acid was extracted from plants and tested by RT-PCR for the presence of Alfalfa...

  5. Uptake of oxytetracycline and its phytotoxicity to alfalfa (Medicago sativa L.)

    Energy Technology Data Exchange (ETDEWEB)

    Kong, W.D. [Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 (China); Zhu, Y.G. [Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 (China)]. E-mail: ygzhu@rcees.ac.cn; Liang, Y.C. [Ministry of Agriculture Key Laboratory of Plant Nutrition and Nutrient Cycling, Institute of Soils and Fertilizers, Chinese Academy of Agricultural Sciences, Beijing 100081 (China); Zhang, J. [Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 (China); Smith, F.A. [Soil and Land Systems, School of Earth and Environmental Sciences, University of Adelaide, DP 636, Adelaide, SA 5005 (Australia); Yang, M. [Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 (China)

    2007-05-15

    A series of experiments were conducted in a hydroponic system to investigate the uptake of oxytetracycline (OTC) and its toxicity to alfalfa (Medicago sativa L.). OTC inhibited alfalfa shoot and root growth by up to 61% and 85%, respectively. The kinetics of OTC uptake could be well described by Michaelis-Menten equation with V {sub max} of 2.25 {mu}mol g{sup -1} fresh weight h{sup -1}, and K {sub m} of 0.036 mM. The uptake of OTC by alfalfa was strongly inhibited by the metabolic inhibitor, 2,4-DNP (2,4-dinitrophenol), at pH 3.5 and 6.0, but not by the aquaporin competitors, glycerol and Ag{sup +}. OTC uptake, however, was significantly inhibited by Hg{sup 2+}, suggesting that the inhibition of influx was due to general cellular stress rather than the specific action of Hg{sup 2+} on aquaporins. Results from the present study suggested that OTC uptake into alfalfa is an energy-dependent process. - Plant uptake of antibiotic oxytetracycline is energy-dependent.

  6. Alfalfa N credits to second-year corn larger than expected

    Science.gov (United States)

    Alfalfa can provide substantial amounts of nitrogen (N) to the first crop that follows it. Recent field research on first-year corn confirms that it is highly likely that grain yields will not improve with added fertilizer N, except on very sandy and very clayey soils. It is less clear how much fert...

  7. Emergence, forage production, and ion relations of alfalfa in response to saline waters

    Science.gov (United States)

    Alfalfa (Medicago sativa L) is an important crop utilized in regions under irrigation commonly impacted by salinity. In this study we evaluate the effect of salinity, as a continual process, from emergence to mature plant growth in successive harvests. We studied emergence, biomass production, salt ...

  8. Replacement of alfalfa hay (Medicago sativa) with maralfalfahay (Pennisetum sp.) in diets of lactating dairy goats

    DEFF Research Database (Denmark)

    Criscioni, P.; Marti, J.V.; Pérez-Baena, I.;

    2016-01-01

    tThe objective of this experiment was to study the effects of substituting alfalfa (Medicagosativa) with maralfalfa (Pennisetum sp.) on energy, nitrogen and carbon balance, methaneemission, and milk performance in dairy goats. Ten Murciano-Granadina dairy goats in latelactation (45.7 ± 2.96 kg of...

  9. Milk production response to feeding alfalfa silage inoculated with Lactobacillus plantarum

    Science.gov (United States)

    In mini-silo trials, silages treated with a Lactobacillus plantarum silage inoculant (Ecosyl, Yorkshire, UK) had increased in vitro rumen microbial biomass production compared to untreated. Our objective was to determine if alfalfa silage treated with this inoculant could produce a milk production r...

  10. Pythium and Fusarium species causing seed rot and damping-off of alfalfa

    Science.gov (United States)

    Seed rot and damping-off is an important disease of alfalfa, severely affecting stand establishment when conditions favor the disease. This disease may have been overlooked as a cause of poor stand establishment and reduced vigor of adult plants. Globally, 15 Pythium species have been found to cause...

  11. Use of Alfalfa for Soil Phosphorus Removal Following Long-Term Manure Application

    Science.gov (United States)

    This study was conducted to examine alfalfa remediation effects on a cornfield treated during a 10-yr period with manure at rates matching either the N (MN) or P (MP) requirements of silage corn (Zea mays L.). A commercial fertilizer (NCK) was used as a control. The site was removed from corn prod...

  12. Meat goat kids finished on alfalfa, red clover, or orchardgrass pastures: Carcass merit and meat quality

    Science.gov (United States)

    This experiment was conducted in 2005-2007 to evaluate carcass and meat quality parameters when meat goat kids were finished on alfalfa (Medicago sativa L; ALF); red clover (Trifolium pretense L.; RCG); or orchardgrass (Dactylis glomerata L; OGR) pastures. Final shrunk body weights were similar whe...

  13. The Impact of Distinct Insect Species on Pollination and Gene Flow in Alfalfa

    Science.gov (United States)

    Pollinator species and plant density can influence pollination and gene flow. The efficacy of different floral visitors at tripping alfalfa flowers was examined in both low and high density patches to determine their potential role in pollination. In addition, for a subset of the floral visitors, th...

  14. Potato leafhopper (Hemiptera: Cicadellidae) ecology and integrated pest management focused on alfalfa

    Science.gov (United States)

    Knowledge to date on biology of the potato leafhopper, Empoasca fabae (Harris), is summarized, including geographic distribution, development, migration, agricultural host plants, and the mechanism of injury to host plants. Damage to alfalfa, potato, soybean and snap bean, as well as treatment guide...

  15. Population Dynamics of Empoasca fabae (Hemiptera: Cicadellidae) in Central Iowa Alfalfa Fields.

    Science.gov (United States)

    Weiser Erlandson, L A; Obrycki, J J

    2015-01-01

    Adults and nymphs of Empoasca fabae Harris (Hemiptera: Cicadellidae) and adults of predatory species in the families Coccinellidae, Anthocoridae, Nabidae, Chrysopidae, and Hemerobiidae were sampled in Iowa alfalfa fields from June to September in 1999 and 2000. The relationship between each predatory taxa and E. fabae was examined using regression analysis. In 2000, all predators were found to be positively correlated with the presence of E. fabae during all periods sampled and most likely contributed to mortality. Orius insidiosus (Say) (Hemiptera: Anthoridae) was the most numerous insect predatory species; population numbers ranged from 0 to 1 and 0.1 to 3.7 adults per 0.25 m(2) in 1999 and 2000, respectively. Partial life tables were constructed for E. fabae nymphs for two alfalfa-growing periods. Nymphs were grouped into three age intervals: first and second, third and fourth, and fifth instars. For the first alfalfa growing period examined, E. fabae nymphal mortality was 70% in 1999 and 49% in 2000. During the last growing period of each season (August-September), total nymphal mortality was relatively low (<25%). Adult E. fabae density ranged from 5.4 to 25.6 and 1.4-9.2 per 0.25 m(2) in 1999 and 2000, respectively. E. fabae population peaks were similar for each age interval in all growing periods. This study provides further information on the population dynamics of E. fabae and its relationship with select predatory species in Iowa alfalfa fields.

  16. Alfalfa contains substantial 9-hydroperoxide lyase activity and a 3Z:2E-enal isomerase

    NARCIS (Netherlands)

    Vliegenthart, J.F.G.; Noordermeer, M.A.; Veldink, G.A.

    1999-01-01

    Fatty acid hydroperoxides formed by lipoxygenase can be cleaved by hydroperoxide lyase resulting in the formation of short-chain aldehydes and omega-oxo acids. Plant hydroperoxide lyases use 13- or 9-hydroperoxy linoleic and linolenic acid as substrates. Alfalfa (Medicago sativa L.) has been reporte

  17. The alfalfa N credit: field-specific recommendations may be coming

    Science.gov (United States)

    Alfalfa can provide all the nitrogen (N) needed for two years of corn. This may sound surprising, but research reports support this statement for about one-half of all trials that have been conducted in the US. However, in other research trials, the need for fertilizer N varied widely and ranged up ...

  18. Forage Quality of Biomass vs. Conventional Alfalfa Cut at Early Bud or Late Flower Maturity

    Science.gov (United States)

    Cellulosic bioenergy systems will result in large areas planted to biomass crops. An important question is whether biomass crops can also be used for livestock feed. This study compared forage quality of an experimental alfalfa germplasm developed for a biomass production system with a conventional ...

  19. Incorporation of p-coumarates into the cell walls of alfalfa changes the lignin composition

    Science.gov (United States)

    In general, monocots can contain a significant amount of an ester-linked p-coumarate (pCA) in their cell walls, but its function is unclear. One hypothesis is that pCA aids in the formation of syringyl-rich regions during lignification. Alfalfa (Medicago sativa), a dicot, is a cultivated perennial f...

  20. Efficacy of a BVDV subunit vaccine produced in alfalfa transgenic plants.

    Science.gov (United States)

    Peréz Aguirreburualde, María Sol; Gómez, María Cristina; Ostachuk, Agustín; Wolman, Federico; Albanesi, Guillermo; Pecora, Andrea; Odeon, Anselmo; Ardila, Fernando; Escribano, José M; Dus Santos, María José; Wigdorovitz, Andrés

    2013-02-15

    Bovine viral diarrhea virus (BVDV) is considered an important cause of economic loss within bovine herds worldwide. In Argentina, only the use of inactivated vaccines is allowed, however, the efficacy of inactivated BVDV vaccines is variable due to its low immunogenicity. The use of recombinant subunit vaccines has been proposed as an alternative to overcome this difficulty. Different studies on protection against BVDV infection have focused the E2 protein, supporting its putative use in subunit vaccines. Utilization of transgenic plants expressing recombinant antigens for the formulation of experimental vaccines represents an innovative and cost effective alternative to the classical fermentation systems. The aim of this work was to develop transgenic alfalfa plants (Medicago sativa, L.) expressing a truncated version of the structural protein E2 from BVDV fused to a molecule named APCH, that target to antigen presenting cells (APCH-tE2). The concentration of recombinant APCH-tE2 in alfalfa leaves was 1 μg/g at fresh weight and its expression remained stable after vegetative propagation. A methodology based an aqueous two phases system was standardized for concentration and partial purification of APCH-tE2 from alfalfa. Guinea pigs parentally immunized with leaf extracts developed high titers of neutralizing antibodies. In bovine, the APCH-tE2 subunit vaccine was able to induce BVDV-specific neutralizing antibodies. After challenge, bovines inoculated with 3 μg of APCH-tE2 produced in alfalfa transgenic plants showed complete virological protection. PMID:23291101

  1. Overexpression of malate dehydrogenase in transgenic alfalfa enhances organic acid synthesis and confers tolerance to aluminum.

    Science.gov (United States)

    Tesfaye, M; Temple, S J; Allan, D L; Vance, C P; Samac, D A

    2001-12-01

    Al toxicity is a severe impediment to production of many crops in acid soil. Toxicity can be reduced through lime application to raise soil pH, however this amendment does not remedy subsoil acidity, and liming may not always be practical or cost-effective. Addition of organic acids to plant nutrient solutions alleviates phytotoxic Al effects, presumably by chelating Al and rendering it less toxic. In an effort to increase organic acid secretion and thereby enhance Al tolerance in alfalfa (Medicago sativa), we produced transgenic plants using nodule-enhanced forms of malate dehydrogenase and phosphoenolpyruvate carboxylase cDNAs under the control of the constitutive cauliflower mosaic virus 35S promoter. We report that a 1.6-fold increase in malate dehydrogenase enzyme specific activity in root tips of selected transgenic alfalfa led to a 4.2-fold increase in root concentration as well as a 7.1-fold increase in root exudation of citrate, oxalate, malate, succinate, and acetate compared with untransformed control alfalfa plants. Overexpression of phosphoenolpyruvate carboxylase enzyme specific activity in transgenic alfalfa did not result in increased root exudation of organic acids. The degree of Al tolerance by transformed plants in hydroponic solutions and in naturally acid soil corresponded with their patterns of organic acid exudation and supports the concept that enhancing organic acid synthesis in plants may be an effective strategy to cope with soil acidity and Al toxicity. PMID:11743127

  2. ECONOMICS AND ENERGY OF ETHANOL PRODUCTION FROM ALFALFA, CORN, AND SWITCHGRASS IN THE UPPER MIDWEST

    Science.gov (United States)

    In the U.S., biomass crop systems will be needed to meet future ethanol production goals. We estimated production costs, profits, and energy budgets for three potential crop systems for the Upper Midwest: continuous corn, an alfalfa-corn rotation, and switchgrass. Production costs, profits, and on-f...

  3. Identification of Molecular Marker Linked to Salt Tolerance Gene in Alfalfa

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    The study has established the F2 offspring obtained by crossing salt-tolerant with salt-sensitive alfalfa, and appraised the salt-tolerant F2 offspring seedling was evaluated in pot culture. With the F2 segregated population, the research has obtained a molecular marker linked with salt-tolerant genes of alfalfa using the improved BSA combined with RAPD. The RAPD PCR products were excised from the agarose gel and purified using a kit, then were mixed with pMD-18T vector and sequenced. Sequencing result indicated the RAPD marker was 1 438 bp in length. Similarity researches using blast in Genbank indicated that the nucleotide sequence of the RAPD marker showed 93% and 91% similarity with mth2-6el8 gene fragment (347 bp) and mth2-33122 gene fragment (334 bp) of Medicago truncatula respectively. Medicago truncatula is a close relative of alfalfa and Mth2-6e18 is a molecular marker of the gene coding for a cysteine protease which was salt inducible in some plants. These results indicated the RAPD marker was possibly related to cysteine protease genes in alfalfa.

  4. Extraction of light filth from whole leaves of alfalfa, lemon balm, papaya, and spearmint: collaborative study.

    Science.gov (United States)

    Nakashima, M J; Glaze, L E

    1987-01-01

    Results are reported for a collaborative study to extend AOAC method 44.A06-44.A08 to extraction of light filth from whole leaves of alfalfa, lemon balm, papaya, and spearmint. A 5 g (spearmint) or 10 g (alfalfa, lemon balm, papaya) test portion is defatted with isopropanol in a simple reflux apparatus. Rat hairs, insect fragments, and whole insects are isolated by wet sieving on a No. 230 sieve, a deaerating boil in 40% isopropanol, and flotation with mineral oil-heptane (85 + 15) from Tween 80-Na4EDTA (1 + 1) and 40% isopropanol in a Wildman trap flask. Each product was spiked at a different level. For rat hairs, recoveries averaged 82.2% from alfalfa, 88.9% from lemon balm, 80.6% from papaya, and 79.6% from spearmint. Recoveries of whole or equivalent insects from these products averaged 66.1, 218.8, 69.4, and 85.4%, respectively; recoveries of insect fragments from these products averaged 89.6, 94.4, 94.1, and 88.1%, respectively. The method has been adopted official first action for extraction of light filth from whole leaves of alfalfa, papaya, and spearmint. The extension of the method to lemon balm was not recommended because of interferences by intrinsic whole insects, which were the same species as the spike material. PMID:3436916

  5. The effects of perennial ryegrass and alfalfa on microbial abundance and diversity in petroleum contaminated soil

    International Nuclear Information System (INIS)

    Enhanced rhizosphere degradation uses plants to stimulate the rhizosphere microbial community to degrade organic contaminants. We measured changes in microbial communities caused by the addition of two species of plants in a soil contaminated with 31,000 ppm of total petroleum hydrocarbons. Perennial ryegrass and/or alfalfa increased the number of rhizosphere bacteria in the hydrocarbon-contaminated soil. These plants also increased the number of bacteria capable of petroleum degradation as estimated by the most probable number (MPN) method. Eco-Biolog plates did not detect changes in metabolic diversity between bulk and rhizosphere samples but denaturing gradient gel electrophoresis (DGGE) analysis of PCR-amplified partial 16S rDNA sequences indicated a shift in the bacterial community in the rhizosphere samples. Dice coefficient matrices derived from DGGE profiles showed similarities between the rhizospheres of alfalfa and perennial ryegrass/alfalfa mixture in the contaminated soil at week seven. Perennial ryegrass and perennial ryegrass/alfalfa mixture caused the greatest change in the rhizosphere bacterial community as determined by DGGE analysis. We concluded that plants altered the microbial population; these changes were plant-specific and could contribute to degradation of petroleum hydrocarbons in contaminated soil. - Plant-specific changes in microbial populations on roots affect degradation of petroleum hydrocarbons in contaminated soil

  6. Metadata and their impact on processes in Building Information Modeling

    Directory of Open Access Journals (Sweden)

    Vladimir Nyvlt

    2014-04-01

    Full Text Available Building Information Modeling (BIM itself contains huge potential, how to increase effectiveness of every project in its all life cycle. It means from initial investment plan through project and building-up activities to long-term usage and property maintenance and finally demolition. Knowledge Management or better say Knowledge Sharing covers two sets of tools, managerial and technological. Manager`s needs are real expectations and desires of final users in terms of how could they benefit from managing long-term projects, covering whole life cycle in terms of sparing investment money and other resources. Technology employed can help BIM processes to support and deliver these benefits to users. How to use this technology for data and metadata collection, storage and sharing, which processes may these new technologies deploy. We will touch how to cover optimized processes proposal for better and smooth support of knowledge sharing within project time-scale, and covering all its life cycle.

  7. QIS-XML: A metadata specification for Quantum Information Science

    CERN Document Server

    Heus, Pascal

    2007-01-01

    While Quantum Information Science (QIS) is still in its infancy, the ability for quantum based hardware or computers to communicate and integrate with their classical counterparts will be a major requirement towards their success. Little attention however has been paid to this aspect of QIS. To manage and exchange information between systems, today's classic Information Technology (IT) commonly uses the eXtensible Markup Language (XML) and its related tools. XML is composed of numerous specifications related to various fields of expertise. No such global specification however has been defined for quantum computers. QIS-XML is a proposed XML metadata specification for the description of fundamental components of QIS (gates & circuits) and a platform for the development of a hardware independent low level pseudo-code for quantum algorithms. This paper lays out the general characteristics of the QIS-XML specification and outlines practical applications through prototype use cases.

  8. Aggregation and Linking of Observational Metadata in the ADS

    CERN Document Server

    Accomazzi, Alberto; Henneken, Edwin A; Grant, Carolyn S; Thompson, Donna M; Chyla, Roman; Holachek, Alexandra; Elliott, Jonathan

    2016-01-01

    We discuss current efforts behind the curation of observing proposals, archive bibliographies, and data links in the NASA Astrophysics Data System (ADS). The primary data in the ADS is the bibliographic content from scholarly articles in Astronomy and Physics, which ADS aggregates from publishers, arXiv and conference proceeding sites. This core bibliographic information is then further enriched by ADS via the generation of citations and usage data, and through the aggregation of external resources from astronomy data archives and libraries. Important sources of such additional information are the metadata describing observing proposals and high level data products, which, once ingested in ADS, become easily discoverable and citeable by the science community. Bibliographic studies have shown that the integration of links between data archives and the ADS provides greater visibility to data products and increased citations to the literature associated with them.

  9. THE QUALITY OF DATA AND METADATA IN A DATAWAREHOUSE

    Directory of Open Access Journals (Sweden)

    Carmen Răduţ

    2013-01-01

    Full Text Available The data quality is an important concept for the economic applications used in the process of analysis. The databases were revolutionized when they first started being used with large amountsof data. From this point on, an important process is represented by storing multidimensional data in datawarehouses, in order to be processed and analyzed with the purpose of obtaining information which can be used for decision making in various activities. Specialty studies show that most data is not useful for the purpose it has been collected because of both the lack of quality and incorrect techniques of manipulating this data. This study will try to offer a process of obtaining quality data in data archives and how to avoid quality anomalies inside metadata.

  10. Enhancing Media Personalization by Extracting Similarity Knowledge from Metadata

    DEFF Research Database (Denmark)

    Butkus, Andrius

    only “more of the same” type of content which does not necessarily lead to the meaningful personalization. Another way to approach similarity is to find a similar underlying meaning in the content. Aspects of meaning in media can be represented using Gardenfors Conceptual Spaces theory, which can...... be seen as a cognitive foundation for modeling concepts. Conceptual Spaces is applied in this thesis to analyze media in terms of its dimensions and knowledge domains, which in return defines properties and concepts. One of the most important domains in terms of describing media is the emotional one......) using Latent Semantic Analysis (one of the unsupervised machine learning techniques). It presents three separate cases to illustrate the similarity knowledge extraction from the metadata, where the emotional components in each case represents different abstraction levels – genres, synopsis and lyrics...

  11. ARIADNE: a Tracking System for Relationships in LHCb Metadata

    CERN Document Server

    Shapoval, I; Cattaneo, M

    2014-01-01

    The data processing model of the LHCb experiment implies handling of an evolving set of heterogeneous metadata entities and relationships between them. The entities range from software and databases states to architecture specificators and software/data deployment locations. For instance, there is an important relationship between the LHCb Conditions Database (CondDB), which provides versioned, time dependent geometry and conditions data, and the LHCb software, which is the data processing applications (used for simulation, high level triggering, reconstruction and analysis of physics data). The evolution of CondDB and of the LHCb applications is a weakly-homomorphic process. It means that relationships between a CondDB state and LHCb application state may not be preserved across different database and application generations. These issues may lead to various kinds of problems in the LHCb production, varying from unexpected application crashes to incorrect data processing results. In this paper we present Ari...

  12. Foundations of a metadata repository for databases of registers and trials.

    Science.gov (United States)

    Stausberg, Jürgen; Löbe, Matthias; Verplancke, Philippe; Drepper, Johannes; Herre, Heinrich; Löffler, Markus

    2009-01-01

    The planning of case report forms (CRFs) in clinical trials or databases in registers is mostly an informal process starting from scratch involving domain experts, biometricians, and documentation specialists. The Telematikplattform für Medizinische Forschungsnetze, an umbrella organization for medical research in Germany, aims at supporting and improving this process with a metadata repository, covering the variables and value lists used in databases of registers and trials. The use cases for the metadata repository range from a specification of case report forms to the harmonization of variable collections, variables, and value lists through a formal review. The warehouse used for the storage of the metadata should at least fulfill the definition of part 3 "Registry metamodel and basic attributes" of ISO/IEC 11179 Information technology - Metadata registries. An implementation of the metadata repository should offer an import and export of metadata in the Operational Data Model standard of the Clinical Data Interchange Standards Consortium. It will facilitate the creation of CRFs and data models, improve the quality of CRFs and data models, support the harmonization of variables and value lists, and support the mapping of metadata and data. PMID:19745342

  13. A comparison of constitutive promoters for expression of transgenes in alfalfa (Medicago sativa).

    Science.gov (United States)

    Samac, Deborah A; Tesfaye, Mesfin; Dornbusch, Melinda; Saruul, Purev; Temple, Stephen J

    2004-08-01

    The activity of constitutive promoters was compared in transgenic alfalfa plants using two marker genes. Three promoters, the 35S promoter from cauliflower mosaic virus (CaMV), the cassava vein mosaic virus (CsVMV) promoter, and the sugarcane bacilliform badnavirus (ScBV) promoter were each fused to the beta-glucuronidase (gusA) gene. The highest GUS enzyme activity was obtained using the CsVMV promoter and all alfalfa cells assayed by in situ staining had high levels of enzyme activity. The 35S promoter was expressed in leaves, roots, and stems at moderate levels, but the promoter was not active in stem pith cells, root cortical cells, or in the symbiotic zones of nodules. The ScBV promoter was active primarily in vascular tissues throughout the plant. In leaves, GUS activity driven by the CsVMV promoter was approximately 24-fold greater than the activity from the 35S promoter and 38-fold greater than the activity from the ScBV promoter. Five promoters, the double 35S promoter, figwort mosaic virus (FMV) promoter, CsVMV promoter, ScBV promoter, and alfalfa small subunit Rubisco (RbcS) promoter were used to control expression of a cDNA from Trichoderma atroviride encoding an endochitinase (ech42). Highest chitinase activity in leaves, roots, and root nodules was obtained in plants containing the CsVMV:ech42 transgene. Plants expressing the endochitinase were challenged with Phoma medicaginis var. medicaginis, the causal agent of spring black stem and leaf spot of alfalfa. Although endochitinase activity in leaves of transgenic plants was 50- to 2650-fold greater than activity in control plants, none of the transgenic plants showed a consistent increase in disease resistance compared to controls. The high constitutive levels of both GUS and endochitinase activity obtained demonstrate that the CsVMV promoter is useful for high-level transgene expression in alfalfa. PMID:15517994

  14. Foraging range of honey bees, Apis mellifera, in alfalfa seed production fields.

    Science.gov (United States)

    Hagler, James R; Mueller, Shannon; Teuber, Larry R; Machtley, Scott A; Van Deynze, Allen

    2011-01-01

    A study was conducted in 2006 and 2007 designed to examine the foraging range of honey bees, Apis mellifera (Hymenoptera: Apidae), in a 15.2 km(2) area dominated by a 128.9 ha glyphosate-resistant Roundup Ready® alfalfa seed production field and several non-Roundup Ready alfalfa seed production fields (totaling 120.2 ha). Each year, honey bee self-marking devices were placed on 112 selected honey bee colonies originating from nine different apiary locations. The foraging bees exiting each apiary location were uniquely marked so that the apiary of origin and the distance traveled by the marked (field-collected) bees into each of the alfalfa fields could be pinpointed. Honey bee self-marking devices were installed on 14.4 and 11.2% of the total hives located within the research area in 2006 and 2007, respectively. The frequency of field-collected bees possessing a distinct mark was similar, averaging 14.0% in 2006 and 12.6% in 2007. A grand total of 12,266 bees were collected from the various alfalfa fields on seven sampling dates over the course of the study. The distances traveled by marked bees ranged from a minimum of 45 m to a maximum of 5983 m. On average, marked bees were recovered ~ 800 m from their apiary of origin and the recovery rate of marked bees decreased exponentially as the distance from the apiary of origin increased. Ultimately, these data will be used to identify the extent of pollen-mediated gene flow from Roundup Ready to conventional alfalfa. PMID:22224495

  15. The ANSS Station Information System: A Centralized Station Metadata Repository for Populating, Managing and Distributing Seismic Station Metadata

    Science.gov (United States)

    Thomas, V. I.; Yu, E.; Acharya, P.; Jaramillo, J.; Chowdhury, F.

    2015-12-01

    Maintaining and archiving accurate site metadata is critical for seismic network operations. The Advanced National Seismic System (ANSS) Station Information System (SIS) is a repository of seismic network field equipment, equipment response, and other site information. Currently, there are 187 different sensor models and 114 data-logger models in SIS. SIS has a web-based user interface that allows network operators to enter information about seismic equipment and assign response parameters to it. It allows users to log entries for sites, equipment, and data streams. Users can also track when equipment is installed, updated, and/or removed from sites. When seismic equipment configurations change for a site, SIS computes the overall gain of a data channel by combining the response parameters of the underlying hardware components. Users can then distribute this metadata in standardized formats such as FDSN StationXML or dataless SEED. One powerful advantage of SIS is that existing data in the repository can be leveraged: e.g., new instruments can be assigned response parameters from the Incorporated Research Institutions for Seismology (IRIS) Nominal Response Library (NRL), or from a similar instrument already in the inventory, thereby reducing the amount of time needed to determine parameters when new equipment (or models) are introduced into a network. SIS is also useful for managing field equipment that does not produce seismic data (eg power systems, telemetry devices or GPS receivers) and gives the network operator a comprehensive view of site field work. SIS allows users to generate field logs to document activities and inventory at sites. Thus, operators can also use SIS reporting capabilities to improve planning and maintenance of the network. Queries such as how many sensors of a certain model are installed or what pieces of equipment have active problem reports are just a few examples of the type of information that is available to SIS users.

  16. Role of Metadata in Cyber forensic and status of Indian Cyber Law

    Directory of Open Access Journals (Sweden)

    Aashish Kumar Purohit

    2011-09-01

    Full Text Available The metadata has wide range of applications in real world. But the importance of metadata in computer forensic is quite large. In this paper we will discuss what kind of information exists on current common document file types and how it can be useful for a computer forensic expert to reach at the guilty person. Also we will list the famous cases in which computer related crime is solved using document metadata information. A brief introduction of current status of cyber law of India is listed in this paper

  17. Western blots.

    Science.gov (United States)

    Freeman, Lita A

    2013-01-01

    Western analysis of apolipoproteins, lipoproteins, and proteins involved in lipoprotein metabolism can be challenging due to their size, hydrophobic nature, and, in some cases, low abundance. Here we describe a Western blotting method that has been used successfully for many proteins involved in lipoprotein metabolism, as well as intact LDL or HDL particles. Proteins or lipoprotein particles separated by gel electrophoresis are transferred to a PVDF membrane in a Hoefer TE22 transfer tank with Tris-Glycine-SDS-Methanol transfer buffer. The membrane is blocked with 3 % BSA/5 % milk to prevent nonspecific binding of antibody to the membrane and is then incubated with primary antibody that binds specifically to the protein of interest. After washing away unbound primary antibody, the membrane is then incubated with an HRP-labeled secondary antibody that binds primary antibody. After washing away unbound secondary antibody, the membrane is then incubated with a substrate for HRP, generating a chemiluminescent signal at the location of the protein of interest. The protein is visualized by exposing the membrane to an autoradiography film or an imaging device. Information on the use of several human antibodies, including apoA-I, A-II, apoB, apoC-II, apoC-III, apoD, apoL1, apoM, PON1, SAA, ABCA1, nitrotyrosine, and LCAT, is provided. This method can be used for Western blotting of virtually any protein as well as native lipoprotein particles. PMID:23912997

  18. Linked Metadata - lightweight semantics for data integration (Invited)

    Science.gov (United States)

    Hendler, J. A.

    2013-12-01

    The "Linked Open Data" cloud (http://linkeddata.org) is currently used to show how the linking of datasets, supported by SPARQL endpoints, is creating a growing set of linked data assets. This linked data space has been growing rapidly, and the last version collected is estimated to have had over 35 billion 'triples.' As impressive as this may sound, there is an inherent flaw in the way the linked data story is conceived. The idea is that all of the data is represented in a linked format (generally RDF) and applications will essentially query this cloud and provide mashup capabilities between the various kinds of data that are found. The view of linking in the cloud is fairly simple -links are provided by either shared URIs or by URIs that are asserted to be owl:sameAs. This view of the linking, which primarily focuses on shared objects and subjects in RDF's subject-predicate-object representation, misses a critical aspect of Semantic Web technology. Given triples such as * A:person1 foaf:knows A:person2 * B:person3 foaf:knows B:person4 * C:person5 foaf:name 'John Doe' this view would not consider them linked (barring other assertions) even though they share a common vocabulary. In fact, we get significant clues that there are commonalities in these data items from the shared namespaces and predicates, even if the traditional 'graph' view of RDF doesn't appear to join on these. Thus, it is the linking of the data descriptions, whether as metadata or other vocabularies, that provides the linking in these cases. This observation is crucial to scientific data integration where the size of the datasets, or even the individual relationships within them, can be quite large. (Note that this is not restricted to scientific data - search engines, social networks, and massive multiuser games also create huge amounts of data.) To convert all the triples into RDF and provide individual links is often unnecessary, and is both time and space intensive. Those looking to do on the

  19. Differential antifungal activity of alfalfa (Medicago santva L.) saponins originated from roots and aerial parts for some ornamental plant pathogens

    OpenAIRE

    Alicja Saniewska; Marian Jurzysta; Zbigniew Biały

    2013-01-01

    The total saponins isolated from aerial parts and roots of alfalfa (Medicago sativa L.) at the concentration of 0,01%, 0,05% and 0,1% showed differential influence on the mycelium growth of Alternaria zinniae, Botrytis cinerea, Botrytis tulipae, Phoma narcissi, Phoma poolensis and Rhizoctonia solani. A higher inhibitory effect on in vitro growth of mycelium of all tested pathogens indicated saponins from roots of alfalfa than from aerial parts. Tested saponins from roots at lhe concentration ...

  20. Optimization of Ultrasonic-Assisted Extraction of Flavonoid Compounds and Antioxidants from Alfalfa Using Response Surface Method

    OpenAIRE

    Chang-Liang Jing; Xiao-Fang Dong; Jian-Ming Tong

    2015-01-01

    Ultrasonic-assisted extraction (UAE) was used to extract flavonoid-enriched antioxidants from alfalfa aerial part. Response surface methodology (RSM), based on a four-factor, five-level central composite design (CCD), was employed to obtain the optimal extraction parameters, in which the flavonoid content was maximum and the antioxidant activity of the extracts was strongest. Radical scavenging capacity of the extracts, which represents the amounts of antioxidants in alfalfa, was determined b...

  1. Preserving Geological Samples and Metadata from Polar Regions

    Science.gov (United States)

    Grunow, A.; Sjunneskog, C. M.

    2011-12-01

    The Office of Polar Programs at the National Science Foundation (NSF-OPP) has long recognized the value of preserving earth science collections due to the inherent logistical challenges and financial costs of collecting geological samples from Polar Regions. NSF-OPP established two national facilities to make Antarctic geological samples and drill cores openly and freely available for research. The Antarctic Marine Geology Research Facility (AMGRF) at Florida State University was established in 1963 and archives Antarctic marine sediment cores, dredge samples and smear slides along with ship logs. The United States Polar Rock Repository (USPRR) at Ohio State University was established in 2003 and archives polar rock samples, marine dredges, unconsolidated materials and terrestrial cores, along with associated materials such as field notes, maps, raw analytical data, paleomagnetic cores, thin sections, microfossil mounts, microslides and residues. The existence of the AMGRF and USPRR helps to minimize redundant sample collecting, lessen the environmental impact of doing polar field work, facilitates field logistics planning and complies with the data sharing requirement of the Antarctic Treaty. USPRR acquires collections through donations from institutions and scientists and then makes these samples available as no-cost loans for research, education and museum exhibits. The AMGRF acquires sediment cores from US based and international collaboration drilling projects in Antarctica. Destructive research techniques are allowed on the loaned samples and loan requests are accepted from any accredited scientific institution in the world. Currently, the USPRR has more than 22,000 cataloged rock samples available to scientists from around the world. All cataloged samples are relabeled with a USPRR number, weighed, photographed and measured for magnetic susceptibility. Many aspects of the sample metadata are included in the database, e.g. geographical location, sample

  2. Effect of Arbuscular Mycorrhizal Fungi Glomus spp. Inoculation on Alfalfa Growth in Soils with Copper Efecto de la Inoculación con Hongos Micorrízicos Arbusculares Glomus spp. sobre el Crecimiento de Alfalfa en Suelos con Cobre

    Directory of Open Access Journals (Sweden)

    Daniela Novoa M

    2010-06-01

    Full Text Available Soils near mining centers usually have high heavy metal (HM levels. It has been found that some plants associated with arbuscular mycorrhizal fungi (AMF improve growth and tolerance to HM in soils. This symbiosis is a biological resource for degraded soil recovery. The objective of this study was to determine the effect of inoculating AMF (Glomus spp. on alfalfa (Medicago sativa L. growth in agricultural soils with different copper (Cu levels for degraded soil recovery. To this effect, alfalfa seeds were grown in soils from the Catemu and Casablanca valleys and inoculated with AMF. Plant height, stem diameter, and number of leaves were measured weekly. Dry matter, mycorrhizal colonization, and Cu concentration in alfalfa plant tissues were measured after 81 days. Inoculation increased plant height by 24%, stem diameter by 11%, and number of leaves by 34%. Inoculation had a significant effect (p ≤ 0.05 on alfalfa plants that were grown in soil with the highest Cu concentration, but had no effect on Cu accumulation in alfalfa plant tissues. A direct relationship was observed between Cu accumulation in alfalfa and Cu concentration in soils. It was concluded that alfalfa inoculated with Glomus spp. is applicable to the soil recovery process whenever soil properties can ensure inoculum effectiveness on alfalfa growth, and avoid toxicity by excessive Cu in alfalfa plant tissues.Los suelos cercanos a centros de actividad minera suelen presentar altos niveles de metales pesados (HM. Se ha encontrado que algunas plantas asociadas a hongos micorrízicos arbusculares (AMF mejoran su crecimiento y tolerancia a los HM presentes en los suelos. Esta simbiosis constituye un recurso biológico para la recuperación de suelos degradados. El objetivo de este estudio fue determinar el efecto de la inoculación con AMF (Glomus spp. sobre el crecimiento de alfalfa (Medicago sativa L. en suelos agrícolas con distintos niveles de cobre (Cu para la recuperación de

  3. Positioning of Learners in Learning Networks with Content, Metadata and Ontologies

    NARCIS (Netherlands)

    Kalz, Marco; Van Bruggen, Jan; Rusman, Ellen; Giesbers, Bas; Koper, Rob

    2006-01-01

    Kalz, M, Van Bruggen, J., Rusmann, E., Giesbers, B., & Koper, R. (2007). Positioning of Learners in Learning Networks with Content-Analysis, Metadata and Ontologies. Interactive Learning Environments, 15, 191-200.

  4. Enhanced Resistance to Sclerotium rolfsii in Populations of Alfalfa Selected for Quantitative Resistance to Sclerotinia trifoliorum.

    Science.gov (United States)

    Pratt, R G; Rowe, D E

    2002-02-01

    ABSTRACT Sclerotinia trifoliorum and Sclerotium rolfsii are pathogens for which similar mechanisms of parasitism have been proposed. This suggested that resistance to these pathogens may be related in a common host plant. This study was undertaken to determine whether selection for quantitative resistance to Sclerotinia trifoliorum in alfalfa also increases resistance to Sclerotium rolfsii as expressed in excised leaf tissues and whole plants. Resistance in excised leaf tissues was evaluated according to the rate of necrosis induced by Sclerotium rolfsii following inoculation with mycelium. Resistance to Sclerotium rolfsii in whole plants was evaluated according to their survival following crown inoculations. Three alfalfa populations previously selected from cv. Delta for quantitative resistance to Sclerotinia trifoliorum exhibited enhanced resistance to Sclerotium rolfsii, in comparison with Delta or with susceptible populations, in excised leaf tissues. When whole plants of Delta and two of these populations, Sclerotinia trifoliorum resistant (STR) and Mississippi Sclerotinia resistant (MSR), were inoculated with Sclerotium rolfsii at 3 to 8 weeks of age, significant (P = 0.01) differences in survival were attributed to plant age at inoculation and alfalfa populations. Survival of both MSR and STR was significantly (P = 0.05) greater than for Delta; the best differential results were obtained by inoculating plants 5 to 7 weeks old. To evaluate relationships of resistance to Sclerotinia trifoliorum and Sclerotium rolfsii over a broader genetic background, additional populations were selected for resistance to Sclerotinia trifoliorum from four other alfalfa cultivars by leaf-inoculation techniques, and this resistance was confirmed by whole-plant inoculations. In excised leaf tissues, all four of these populations also expressed enhanced resistance to Sclerotium rolfsii in comparison with either parent cultivars or populations of comparable size selected at random

  5. A document centric metadata registration tool constructing earth environmental data infrastructure

    Science.gov (United States)

    Ichino, M.; Kinutani, H.; Ono, M.; Shimizu, T.; Yoshikawa, M.; Masuda, K.; Fukuda, K.; Kawamoto, H.

    2009-12-01

    DIAS (Data Integration and Analysis System) is one of GEOSS activities in Japan. It is also a leading part of the GEOSS task with the same name defined in GEOSS Ten Year Implementation Plan. The main mission of DIAS is to construct data infrastructure that can effectively integrate earth environmental data such as observation data, numerical model outputs, and socio-economic data provided from the fields of climate, water cycle, ecosystem, ocean, biodiversity and agriculture. Some of DIAS's data products are available at the following web site of http://www.jamstec.go.jp/e/medid/dias. Most of earth environmental data commonly have spatial and temporal attributes such as the covering geographic scope or the created date. The metadata standards including these common attributes are published by the geographic information technical committee (TC211) in ISO (the International Organization for Standardization) as specifications of ISO 19115:2003 and 19139:2007. Accordingly, DIAS metadata is developed with basing on ISO/TC211 metadata standards. From the viewpoint of data users, metadata is useful not only for data retrieval and analysis but also for interoperability and information sharing among experts, beginners and nonprofessionals. On the other hand, from the viewpoint of data providers, two problems were pointed out after discussions. One is that data providers prefer to minimize another tasks and spending time for creating metadata. Another is that data providers want to manage and publish documents to explain their data sets more comprehensively. Because of solving these problems, we have been developing a document centric metadata registration tool. The features of our tool are that the generated documents are available instantly and there is no extra cost for data providers to generate metadata. Also, this tool is developed as a Web application. So, this tool does not demand any software for data providers if they have a web-browser. The interface of the tool

  6. The effects of aqueous extract of alfalfa on blood glucose and lipids in alloxan-induced diabetic rats

    Science.gov (United States)

    Amraie, Esmaiel; Farsani, Masome Khosravi; Sadeghi, Leila; Khan, Tayaba Naim; Adavi, Zohrab

    2015-01-01

    Diabetes is a common metabolic disorder that is specified by hyperglycemia resulting from defects in insulin secretion, insulin action, or both. The use of nonpharmacological treatments (herbal agents) is a new approach in the management of diabetes. The aim of this study was to investigate the effect of aqueous extract of alfalfa on blood glucose and serum lipids in alloxan-induced diabetic rats. In this study, 32 female rats (210–250 g) were used which were divided randomly into 4 groups including intact control group, diabetic control group, and 2 diabetic groups which received 250 and 500 mg/kg doses of aqueous extract of alfalfa, respectively. In the diabetic groups, alloxan-monohydrate was injected peritoneally to create diabetic condition. The two last groups orally received aqueous extract of alfalfa for 21 days. At the end of experiment, sugar, cholesterol, triglycerides, high-density and low-density lipoprotein, and aspartate aminotransferase (ALT) and alanine aminotransferase (AST) levels were measured in the samples. Consumption of aqueous alfalfa extract significantly reduced glucose, cholesterol, triglycerides, and low-density lipoprotein (LDL) levels in the diabetic rats but enhanced high-density lipoprotein (HDL) levels. ALT and AST liver enzyme levels were also reduced in blood. Histological examination showed that the aqueous alfalfa extract caused reconstruction of damaged liver and enhanced Langerhans islets’ diameter in pancreas. Therefore, all signs of diabetes were improved by oral administration of alfalfa in defined dose. PMID:26525173

  7. Metadata a vyhledávání informací na Internetu

    OpenAIRE

    Vít, Kristian

    2009-01-01

    My work idicate the aim to acquaint the reader with development, functionality and seubsequent use metadata in web pages. The reader learns more about functionality invidual meta-information and their benefit from browser searching. Eventually methodics, which help to author increase traffic to his website. Then I put the banned technique in which the reader should be careful. Finnaly, I wrote a short summary of advantage or disadvantage the use of metadata.

  8. The Use of Metadata for Educational Resources in Digital Repositories: practices and Perspectives

    OpenAIRE

    Κουτσομητρόπουλος, Δημήτριος Α.; Αλεξόπουλος, Ανδρέας Δ.; Σολωμού, Γεωργία Δ.; Παπαθεοδώρου, Θεόδωρος; Koutsomitropoulos, Dimitrios A.; Alexopoulos, Andreas D.; Solomou, Georgia S.; Papatheodorou, Theodore

    2010-01-01

    The wide availability of educational resources is a common objective for universities, libraries, archives and other knowledge-intensive institutions. Although generic metadata specifications (such as Dublin Core) seem to fulfill the need for documenting web-distributed objects, educational resources demand a more specialized treatment and characterization. In this article we focus on the use of learning-object specific metadata in digital repositories, as they are primarily incarnated in the...

  9. PicShark: Mitigating Metadata Scarcity Through Large-Scale P2P Collaboration

    OpenAIRE

    Cudre-Mauroux, Philippe; Budura, Adriana; HAUSWIRTH, Manfred; Aberer, Karl

    2008-01-01

    Abstract With the commoditization of digital devices, personal information and media sharing is becoming a key application on the pervasive Web. In such a context, data annotation rather than data production is the main bottleneck. Metadata scarcity represents a major obstacle preventing effcient information processing in large and heterogeneous communities. However, social communities also open the door to new possibilities for addressing local metadata scarcity by taking advantage of global...

  10. ­The Geospatial Metadata Manager’s Toolbox: Three Techniques for Maintaining Records

    OpenAIRE

    Bruce Godfrey; Jeremy Kenyon

    2015-01-01

    Managing geospatial metadata records requires a range of techniques. At the University of Idaho Library, we have tens of thousands of records which need to be maintained as well as the addition of new records which need to be normalized and added to the collections. We show a graphical user interface (GUI) tool that was developed to make simple modifications, a simple XSLT that operates on complex metadata, and a Python script with enables parallel processing to make maintenance tasks more ...

  11. linkedISA: semantic representation of ISA-Tab experimental metadata

    OpenAIRE

    González-Beltrán, Alejandra; Maguire, Eamonn; Sansone, Susanna-Assunta; Rocca-Serra, Philippe

    2014-01-01

    Background Reporting and sharing experimental metadata- such as the experimental design, characteristics of the samples, and procedures applied, along with the analysis results, in a standardised manner ensures that datasets are comprehensible and, in principle, reproducible, comparable and reusable. Furthermore, sharing datasets in formats designed for consumption by humans and machines will also maximize their use. The Investigation/Study/Assay (ISA) open source metadata tracking framework ...

  12. Automated Metadata in Multimedia Information Systems Creation, Refinement, Use in Surrogates, and Evaluation

    CERN Document Server

    Christel, Michael

    2009-01-01

    Improvements in network bandwidth along with dramatic drops in digital storage and processing costs have resulted in the explosive growth of multimedia (combinations of text, image, audio, and video) resources on the Internet and in digital repositories. A suite of computer technologies delivering speech, image, and natural language understanding can automatically derive descriptive metadata for such resources. Difficulties for end users ensue, however, with the tremendous volume and varying quality of automated metadata for multimedia information systems. This lecture surveys automatic metada

  13. Structuring Business Metadata in Data Warehouse Systems for Effective Business Support

    OpenAIRE

    Sarda, N. L.

    2001-01-01

    Large organizations today are being served by different types of data processing and informations systems, ranging from the operational (OLTP) systems, data warehouse systems, to data mining and business intelligence applications. It is important to create an integrated repository of what these systems contain and do in order to use them collectively and effectively. The repository contains metadata of source systems, data warehouse, and also the business metadata. Decision support and busine...

  14. A Study of Users Expectations for Metadata Repositories of Educational Resources

    OpenAIRE

    Stefanova, Eliza; Nikolova, Nikolina; Kovatcheva, Eugenia; Stefanov, Krassen; Boytchev, Pavel

    2010-01-01

    This paper presents the role of contemporary digital libraries with educational resources in Europe. The importance of enriching digital resources with complete, descriptive and accurate metadata is discussed as well as how these metadata are supported within an European project – Share.TEC. The paper presents the results of a workshop with members of the project target group. The participants were asked to complete a questionnaire and provide feedback about specific issues related to the met...

  15. Automating the Extraction of Metadata from Archaeological Data Using iRods Rules

    Directory of Open Access Journals (Sweden)

    David Walling

    2011-10-01

    Full Text Available The Texas Advanced Computing Center and the Institute for Classical Archaeology at the University of Texas at Austin developed a method that uses iRods rules and a Jython script to automate the extraction of metadata from digital archaeological data. The first step was to create a record-keeping system to classify the data. The record-keeping system employs file and directory hierarchy naming conventions designed specifically to maintain the relationship between the data objects and map the archaeological documentation process. The metadata implicit in the record-keeping system is automatically extracted upon ingest, combined with additional sources of metadata, and stored alongside the data in the iRods preservation environment. This method enables a more organized workflow for the researchers, helps them archive their data close to the moment of data creation, and avoids error prone manual metadata input. We describe the types of metadata extracted and provide technical details of the extraction process and storage of the data and metadata.

  16. Normalized Metadata Generation for Human Retrieval Using Multiple Video Surveillance Cameras.

    Science.gov (United States)

    Jung, Jaehoon; Yoon, Inhye; Lee, Seungwon; Paik, Joonki

    2016-01-01

    Since it is impossible for surveillance personnel to keep monitoring videos from a multiple camera-based surveillance system, an efficient technique is needed to help recognize important situations by retrieving the metadata of an object-of-interest. In a multiple camera-based surveillance system, an object detected in a camera has a different shape in another camera, which is a critical issue of wide-range, real-time surveillance systems. In order to address the problem, this paper presents an object retrieval method by extracting the normalized metadata of an object-of-interest from multiple, heterogeneous cameras. The proposed metadata generation algorithm consists of three steps: (i) generation of a three-dimensional (3D) human model; (ii) human object-based automatic scene calibration; and (iii) metadata generation. More specifically, an appropriately-generated 3D human model provides the foot-to-head direction information that is used as the input of the automatic calibration of each camera. The normalized object information is used to retrieve an object-of-interest in a wide-range, multiple-camera surveillance system in the form of metadata. Experimental results show that the 3D human model matches the ground truth, and automatic calibration-based normalization of metadata enables a successful retrieval and tracking of a human object in the multiple-camera video surveillance system. PMID:27347961

  17. Updated population metadata for United States historical climatology network stations

    Science.gov (United States)

    Owen, T.W.; Gallo, K.P.

    2000-01-01

    The United States Historical Climatology Network (HCN) serial temperature dataset is comprised of 1221 high-quality, long-term climate observing stations. The HCN dataset is available in several versions, one of which includes population-based temperature modifications to adjust urban temperatures for the "heat-island" effect. Unfortunately, the decennial population metadata file is not complete as missing values are present for 17.6% of the 12 210 population values associated with the 1221 individual stations during the 1900-90 interval. Retrospective grid-based populations. Within a fixed distance of an HCN station, were estimated through the use of a gridded population density dataset and historically available U.S. Census county data. The grid-based populations for the HCN stations provide values derived from a consistent methodology compared to the current HCN populations that can vary as definitions of the area associated with a city change over time. The use of grid-based populations may minimally be appropriate to augment populations for HCN climate stations that lack any population data, and are recommended when consistent and complete population data are required. The recommended urban temperature adjustments based on the HCN and grid-based methods of estimating station population can be significantly different for individual stations within the HCN dataset.

  18. Documenting scientific workflow: the metadata, provenance and ontology project

    Science.gov (United States)

    Greenwald, Martin; Stillerman, J.; Wright, J.; Abla, G.; Chanthavong, R.; Schissel, D.; Romosan, A.; Shoshani, A.

    2014-10-01

    Careful management of data, its creation and transformation (provenance) and associated metadata is a critical part of any scientific enterprise. Traditionally this was the role of the lab notebook, but the digital era has resulted instead in the fragmentation of data, processing and annotation. This paper describes an ongoing multi-institutional project aimed at remedying this problem by developing tools to automate documentation of scientific workflows and associated information. Data and all processes that create or modify that data are represented mathematically as a directed acyclic graph, providing explicit information about the relationships between elements with all elements having globally unique and persistent IDs. The export of data, for publication, presentation or external databases would be recorded, allowing traceability in either direction - answering the questions ``Where was this data used?'' or ``Where did the data in this figure come from.'' Namespace management is provided through a well structured ``ontology,'' which can be customized for any particular community or application. Supported by DOE Contract DE-SC0008736.

  19. Establishment of Kawasaki disease database based on metadata standard

    Science.gov (United States)

    Park, Yu Rang; Kim, Jae-Jung; Yoon, Young Jo; Yoon, Young-Kwang; Koo, Ha Yeong; Hong, Young Mi; Jang, Gi Young; Shin, Soo-Yong; Lee, Jong-Keuk

    2016-01-01

    Kawasaki disease (KD) is a rare disease that occurs predominantly in infants and young children. To identify KD susceptibility genes and to develop a diagnostic test, a specific therapy, or prevention method, collecting KD patients’ clinical and genomic data is one of the major issues. For this purpose, Kawasaki Disease Database (KDD) was developed based on the efforts of Korean Kawasaki Disease Genetics Consortium (KKDGC). KDD is a collection of 1292 clinical data and genomic samples of 1283 patients from 13 KKDGC-participating hospitals. Each sample contains the relevant clinical data, genomic DNA and plasma samples isolated from patients’ blood, omics data and KD-associated genotype data. Clinical data was collected and saved using the common data elements based on the ISO/IEC 11179 metadata standard. Two genome-wide association study data of total 482 samples and whole exome sequencing data of 12 samples were also collected. In addition, KDD includes the rare cases of KD (16 cases with family history, 46 cases with recurrence, 119 cases with intravenous immunoglobulin non-responsiveness, and 52 cases with coronary artery aneurysm). As the first public database for KD, KDD can significantly facilitate KD studies. All data in KDD can be searchable and downloadable. KDD was implemented in PHP, MySQL and Apache, with all major browsers supported. Database URL: http://www.kawasakidisease.kr

  20. Identification of Image Spam by Using Low Level & Metadata Features

    Directory of Open Access Journals (Sweden)

    Anand Gupta,

    2012-04-01

    Full Text Available Spammers are constantly evolving new spam technologies, the latest of which is image spam. Till now research in spam image identification has been addressed by considering properties like colour, size, compressibility, entropy, content etc. However, we feel the methods of identification so evolved have certain limitations due to embedded obfuscation like complex backgrounds, compression artifacts and wide variety of fonts and formats .To overcome these limitations, we have proposed 2 methodologies(however there can be more. Each methodology has 4 stages. Both the methodologies are almost similar except in the second stage where methodology I extracts low level features while the other extracts metadata features. Also a comparison between both the methodologies is shown. The method works on images with and without noise separately. Colour properties of the images are altered so that OCR (Optical Character Recognition can easily read the text embedded in the image. The proposed methods are tested on a dataset of 1984 spam images and are found to be effective in identifying all types of spam images having (1 only text, (2 only images or (3 both text and images. The encouraging experimental results show that the methodology I achieves an accuracy of 92% while the other achieves an accuracy of 93.3%

  1. Metadata Technique with E-government for Malaysian Universities

    Directory of Open Access Journals (Sweden)

    Mohammed Abdulameer Mohammed

    2012-07-01

    Full Text Available The universities in Malaysia have made a good plan in their education layout to achieve the top educational rank. The goal is to make the Malaysian education in centre of the global map by enhancing the academic excellence; its one of 2020 plan in Malaysia that has been made by Mahathir Mohammad in 1991. That plan focuses on finance and banking, biotechnology, information and communication technology, information technology, multimedia content development, advanced and manufacturing. Recently in Malaysia there are more than 50 universities. All the public university has its own e-government application to give the staff online connection and to provide best service to people. But there is no sharing with other public universities. Therefore if there is plan will attain success in only one university, it wont be shared with others. In Universiti Sains Malaysia (USM they use APEX (Accelerated Program for Excellence that has been used in 2008. This idea was focused only on USM in Malaysia, because there is no sharing for knowledge between Malaysian universities. This paper creates a framework that uses data warehouse techniques such as metadata common warehouse to support the universities e-government. As such it increases sharing information among the universitys department itself and with other universities departments and gives better understanding which can reduce delay and strengthen the efficiency of sharing the information for government.

  2. Establishment of Kawasaki disease database based on metadata standard.

    Science.gov (United States)

    Park, Yu Rang; Kim, Jae-Jung; Yoon, Young Jo; Yoon, Young-Kwang; Koo, Ha Yeong; Hong, Young Mi; Jang, Gi Young; Shin, Soo-Yong; Lee, Jong-Keuk

    2016-07-01

    Kawasaki disease (KD) is a rare disease that occurs predominantly in infants and young children. To identify KD susceptibility genes and to develop a diagnostic test, a specific therapy, or prevention method, collecting KD patients' clinical and genomic data is one of the major issues. For this purpose, Kawasaki Disease Database (KDD) was developed based on the efforts of Korean Kawasaki Disease Genetics Consortium (KKDGC). KDD is a collection of 1292 clinical data and genomic samples of 1283 patients from 13 KKDGC-participating hospitals. Each sample contains the relevant clinical data, genomic DNA and plasma samples isolated from patients' blood, omics data and KD-associated genotype data. Clinical data was collected and saved using the common data elements based on the ISO/IEC 11179 metadata standard. Two genome-wide association study data of total 482 samples and whole exome sequencing data of 12 samples were also collected. In addition, KDD includes the rare cases of KD (16 cases with family history, 46 cases with recurrence, 119 cases with intravenous immunoglobulin non-responsiveness, and 52 cases with coronary artery aneurysm). As the first public database for KD, KDD can significantly facilitate KD studies. All data in KDD can be searchable and downloadable. KDD was implemented in PHP, MySQL and Apache, with all major browsers supported.Database URL: http://www.kawasakidisease.kr. PMID:27630202

  3. Best Phd thesis Prize: Statistical analysis of ALFALFA galaxies: insights in galaxy

    Science.gov (United States)

    Papastergis, E.

    2013-09-01

    We use the rich dataset of local universe galaxies detected by the ALFALFA 21cm survey to study the statistical properties of gas-bearing galaxies. In particular, we measure the number density of galaxies as a function of their baryonic mass ("baryonic mass function") and rotational velocity ("velocity width function"), and we characterize their clustering properties ("two-point correlation function"). These statistical distributions are determined by both the properties of dark matter on small scales, as well as by the complex baryonic processes through which galaxies form over cosmic time. We interpret the ALFALFA measurements with the aid of publicly available cosmological N-body simulations and we present some key results related to galaxy formation and small-scale cosmology.

  4. [Molecular identification of intergeneric somatic hybrid plants between alfalfa and sainfoin].

    Science.gov (United States)

    Xu, Z Q; Jia, J F

    2000-03-01

    Somatic hybrid plants between alfalfa and sainfoin were regenerated by protoplast fusion and culture. DNA samples of the hybrid plants, hydroxyproline-resistant sainfoin plants, alfalfa cell line transformed with Agrobacterium tumefaciens 702 were isolated with a new and simple method. The hybridity was identified by random amplified polymorphic DNAs and Southern hybridization. Significant differences can be seen in the sequences amplified, which are specific for each parent/primer combination under the amplification conditions used. In 20 random oligonucleotide primers used, six could amplified more DNA fragments and had better polymorphisms. The results suggested that besides containing nuclear substances of two parents, the hybrid genome was inclined to eliminate sainfoin chromosome with DNA reconstruction. However, the somatic genome also could produce the sainfoin-specified DNA fragments which further confirmed by Southern hybridization. The hybrids were asymmetric and had certain regeneration ability just because the intervention of sainfoin DNA. PMID:10976321

  5. Cofolding organizes alfalfa mosaic virus RNA and coat protein for replication.

    Science.gov (United States)

    Guogas, Laura M; Filman, David J; Hogle, James M; Gehrke, Lee

    2004-12-17

    Alfalfa mosaic virus genomic RNAs are infectious only when the viral coat protein binds to the RNA 3' termini. The crystal structure of an alfalfa mosaic virus RNA-peptide complex reveals that conserved AUGC repeats and Pro-Thr-x-Arg-Ser-x-x-Tyr coat protein amino acids cofold upon interacting. Alternating AUGC residues have opposite orientation, and they base pair in different adjacent duplexes. Localized RNA backbone reversals stabilized by arginine-guanine interactions place the adenosines and guanines in reverse order in the duplex. The results suggest that a uniform, organized 3' conformation, similar to that found on viral RNAs with transfer RNA-like ends, may be essential for replication. PMID:15604410

  6. ALFALFA HI Content and Star Formation in Virgo Cluster Early-Type Dwarfs

    CERN Document Server

    Koopmann, R A; Haynes, M P; Brosch, N

    2009-01-01

    The ALFALFA (Arecibo Legacy Fast ALFA) blind survey is providing a census of HI in galaxies of all types in a range of environments. Here we report on ALFALFA results for Virgo Cluster early-type dwarfs between declinations of 4 and 16 degrees. Less than 2% of the Virgo early-type dwarf population is detected, compared to 70-80% of the Im/BCD dwarf population. Most of the dwarfs detected in HI show evidence for ongoing or recent star formation. Early-type galaxies with HI tend to be located in the outer regions of the cluster and to be brighter. Early-type dwarfs with HI may be undergoing morphological transition due to cluster environmental effects.

  7. Resistance and susceptibility of alfalfa (Medicago sativa L.) cultivars to the aphid Therioaphis maculata (Homoptera:Aphididae): insect biology and cultivar evaluation

    Institute of Scientific and Technical Information of China (English)

    ALEXANDRE DE ALMEIDA E SILVA; ELENICE MOURO VARANDA; JOS(E) RICARDO BAROSELA

    2006-01-01

    Biology of the aphid Therioaphis maculata was studied on alfalfa (Medicago sativa L.), including four resistant (Mesa-Sirsa, CUF101, Baker and Lahontan) and two susceptible (ARC and Caliverde) alfalfa cultivars, and one of the most cropped Brazilian cultivars, Crioula. Under controlled conditions, antibiosis (i.e., reduced longevity, fecundity and increased mortality of the aphid) was observed mainly on the resistant alfalfa cultivars,except on Lahontan. Crioula seemed to be tolerant to aphids. Present data support geographic limitation usage of cultivars, and we suggest Baker and Mesa-Sirsa as sources of antibiosis,and provide biological information of a tropical T. maculata biotype on alfalfa.

  8. Effect of feeding selenium-fertilized alfalfa hay on performance of weaned beef calves.

    Directory of Open Access Journals (Sweden)

    Jean A Hall

    Full Text Available Selenium (Se is an essential micronutrient in cattle, and Se-deficiency can affect morbidity and mortality. Calves may have greater Se requirements during periods of stress, such as during the transitional period between weaning and movement to a feedlot. Previously, we showed that feeding Se-fertilized forage increases whole-blood (WB Se concentrations in mature beef cows. Our current objective was to test whether feeding Se-fertilized forage increases WB-Se concentrations and performance in weaned beef calves. Recently weaned beef calves (n = 60 were blocked by body weight, randomly assigned to 4 groups, and fed an alfalfa hay based diet for 7 wk, which was harvested from fields fertilized with sodium-selenate at a rate of 0, 22.5, 45.0, or 89.9 g Se/ha. Blood samples were collected weekly and analyzed for WB-Se concentrations. Body weight and health status of calves were monitored during the 7-wk feeding trial. Increasing application rates of Se fertilizer resulted in increased alfalfa hay Se content for that cutting of alfalfa (0.07, 0.95, 1.55, 3.26 mg Se/kg dry matter for Se application rates of 0, 22.5, 45.0, or 89.9 g Se/ha, respectively. Feeding Se-fertilized alfalfa hay during the 7-wk preconditioning period increased WB-Se concentrations (P Linear<0.001 and body weights (P Linear = 0.002 depending upon the Se-application rate. Based upon our results we suggest that soil-Se fertilization is a potential management tool to improve Se-status and performance in weaned calves in areas with low soil-Se concentrations.

  9. Effect of Deposition from Static Test Fires on Corn and Alfalfa

    OpenAIRE

    Mendenhall, Scout

    2013-01-01

    A greenhouse study was conducted to determine the effects of deposition from static rocket test fires on corn and alfalfa. Seeds were germinated in a wide concentration range of depositional material, called test fire soil (TFS). Additionally, the impact of chloride and aluminum, two major components of test fire soil, on germination was also evaluated. Furthermore, plants were grown in packed columns and exposed to test fire soil, either in the root zone or on foliage. Tissue was weighed and...

  10. Effect of Depostition From Static Rocket Test Fires on Corn and Alfalfa

    OpenAIRE

    Mendenhall, Scout

    2012-01-01

    A greenhouse study was conducted to determine the effects of deposition from static rocket test fires on corn and alfalfa. Seeds were germinated in a wide concentration range of depositional material, called test fire soil (TFS). Additionally, the impact of chloride and aluminum, two major components of test fire soil, on germination was also evaluated. Furthermore, plants were grown in packed columns and exposed to test fire soil, either in the root zone or on foliage. Tissue was weighed and...

  11. The Arecibo Pisces-Perseus Survey: An Undergraduate ALFALFA Team Project

    Science.gov (United States)

    O'Donoghue, Aileen A.; Koopmann, Rebecca A.; Haynes, Martha P.; Jones, Michael; Craig, David; Hallenbeck, Gregory L.; Rosenberg, Jessica L.; Venkatesan, Aparna; Undergraduate ALFALFA Team

    2016-01-01

    The Milky Way's position in an outer filament of Lanieakea affords us a striking view of the Pisces-Perseus Supercluster (PPS) arcing roughly from 22h to 4h and 0° to +50° concentrated between cz = 4,000 km/s and cz = 8,000 km/s as a "wall" parallel to the plane of the sky. It is bounded by voids both between Laniakea and PPS and beyond PPS. Within this box, the 70% ALFALFA survey has detected 4,800 galaxies within cz = 8,000 km/s. Of these, 80% have masses greater than 108 M⊙. At the distance of the PPS, galaxies with MHI ≤ 108 M⊙ are below the ALFALFA detection limit. Thus to further explore this rich diversity of galaxy environments and the adjoining voids, the Undergraduate ALFALFA Team is in the process of using the L-band Wide receiver at Arecibo Observatory for the Arecibo Pisces-Perseus Supercluster Survey (APPSS). We will observe galaxies with 108 M⊙ ≤ MHI ≤ 109 M⊙ chosen from the SDSS DR12 and GALEX catalogs. We are limiting our observations to the PPS ridge in 21h 30m to 3h 15m and 23° to 35°. Since this region lacks SDSS spectroscopy, targets have been selected using photometric criteria derived from SDSS and GALEX observations for galaxies detected by ALFALFA. The results of these observations will allow us to constrain the HI mass function along the PPS ridge. Application of the Tully-Fisher relation will allow a robust measure of the infall velocities of galaxies into the filament. This work has been supported by NSF grant AST-1211005.

  12. Identification and Selection for Salt Tolerance in Alfalfa (Medicago sativa L. Ecotypes via Physiological Traits

    Directory of Open Access Journals (Sweden)

    Hassan MONIRIFAR

    2009-12-01

    Full Text Available Salt stress is a serious environmental problem throughout the world which may be partially relieved by breeding cultivars that can tolerate salt stress. Plant breeding may provide a relatively cost effective short-term solution to the salinity problem by producing cultivars able to remain productive at low to moderate levels of salinity. Five alfalfa cultivars, �Seyah-Roud�, �Ahar-Hourand�, �Oskou�, �Malekan� and �Sefida-Khan� were assessed for salt tolerance at mature plant stage. A greenhouse screening system was used to evaluate individual alfalfa plants grown in perlit medium, and irrigated with water containing different amounts of NaCl. Three salt levels were achieved by adding 0, 100 and 200 mM NaCl to Hoagland nutrient solution, respectively. Forage yield, sodium and potassium contents and K/Na ratio was determined. Also, leaf samples were analyzed for proline and chlorophyll contents. The ecotypes Seyha-Roud and �Sefida-Khan� had comparatively less sodium contents than �Oskou�, �Ahar-Hourand� and �Malekan� ecotypes, also potassium content increased under saline condition. Forage yield of different alfalfa ecotypes was significantly influenced by the salinity. The ecotypes �Malekan�, Ahar- Hourand and �Oskou� were successful in maintaining forage yield under salinity stress. Sodium contents increased due to salinity in all alfalfa ecotypes however ecotypes �Ahar-Hourand� and �Malekan� maintained the highest leaf Na concentration. They showed higher content of K than other ecotypes but had lower K/Na ratio. It was concluded that, two ecotypes �Malekan� and �Ahar-Hourand� were better.

  13. Bioassay for Detection of Dichlorvos Insecticide in Air in Alfalfa Leafcutting Bee (Megachile Rotundata F.) Incubators

    OpenAIRE

    Purdy John R.; Kevan Peter G.

    2014-01-01

    Dichlorvos is an insecticide used in slow-release plastic strips for controlling chalcid wasp parasites, such as Pteromalus venustus Walker, in incubators used to raise alfalfa leafcutting bees (Megachile rotundata F.). Beekeepers need a practical method to detect dichlorvos in air and verify that it has dissipated to levels acceptable for worker re-entry and for the bees to emerge. We evaluated three methods for analysis of the dichlorvos concentration in air. Vapor sampling tubes using a ma...

  14. Economic evaluation of biological rodent control using barn owls Tyto alba in alfalfa

    OpenAIRE

    Motro, Y.

    2011-01-01

    Rodents are common pests in various agricultural cultivations. Utilization of barn owls for rodent pest control has long been used. In Israel, the indirect effect of barn owl predation pressure on alfalfa crop yield has been examined. Using radio-telemetry, barn owls were tracked to form a density-distance function, which was later used to estimate predation pressure on whole fields. This function was utilized on all barn owls nesting in the vicinity to assess accumulated predation pressure o...

  15. Activity screening of plant growth promoting rhizobacteria isolated from alfalfa rhizosphere

    OpenAIRE

    shahla pashapour; Hossein besharati; Mahmoud rezazadeh; Ahmad Alimadadi; Nadergholi Ebrahimi

    2016-01-01

    Introduction: Some rhizobacteria by various mechanisms influence plant growth as they are called plant growth promoting rhizobacteria (PGPR). Scientists identified some PGPR characters involved in promoting plant growth, while all these characters are not able to study. The aim of this study was to evaluate PGP activities of bacterial isolates, (45 isolates belonged to rhizobium and 2 bacterial isolates belonged to Pseudomonas fluorescens), which were isolated from alfalfa (Medicago sativa) r...

  16. Social tagging in the life sciences: characterizing a new metadata resource for bioinformatics

    Directory of Open Access Journals (Sweden)

    Tennis Joseph T

    2009-09-01

    Full Text Available Abstract Background Academic social tagging systems, such as Connotea and CiteULike, provide researchers with a means to organize personal collections of online references with keywords (tags and to share these collections with others. One of the side-effects of the operation of these systems is the generation of large, publicly accessible metadata repositories describing the resources in the collections. In light of the well-known expansion of information in the life sciences and the need for metadata to enhance its value, these repositories present a potentially valuable new resource for application developers. Here we characterize the current contents of two scientifically relevant metadata repositories created through social tagging. This investigation helps to establish how such socially constructed metadata might be used as it stands currently and to suggest ways that new social tagging systems might be designed that would yield better aggregate products. Results We assessed the metadata that users of CiteULike and Connotea associated with citations in PubMed with the following metrics: coverage of the document space, density of metadata (tags per document, rates of inter-annotator agreement, and rates of agreement with MeSH indexing. CiteULike and Connotea were very similar on all of the measurements. In comparison to PubMed, document coverage and per-document metadata density were much lower for the social tagging systems. Inter-annotator agreement within the social tagging systems and the agreement between the aggregated social tagging metadata and MeSH indexing was low though the latter could be increased through voting. Conclusion The most promising uses of metadata from current academic social tagging repositories will be those that find ways to utilize the novel relationships between users, tags, and documents exposed through these systems. For more traditional kinds of indexing-based applications (such as keyword-based search to

  17. EUDAT B2FIND : A Cross-Discipline Metadata Service and Discovery Portal

    Science.gov (United States)

    Widmann, Heinrich; Thiemann, Hannes

    2016-04-01

    The European Data Infrastructure (EUDAT) project aims at a pan-European environment that supports a variety of multiple research communities and individuals to manage the rising tide of scientific data by advanced data management technologies. This led to the establishment of the community-driven Collaborative Data Infrastructure that implements common data services and storage resources to tackle the basic requirements and the specific challenges of international and interdisciplinary research data management. The metadata service B2FIND plays a central role in this context by providing a simple and user-friendly discovery portal to find research data collections stored in EUDAT data centers or in other repositories. For this we store the diverse metadata collected from heterogeneous sources in a comprehensive joint metadata catalogue and make them searchable in an open data portal. The implemented metadata ingestion workflow consists of three steps. First the metadata records - provided either by various research communities or via other EUDAT services - are harvested. Afterwards the raw metadata records are converted and mapped to unified key-value dictionaries as specified by the B2FIND schema. The semantic mapping of the non-uniform, community specific metadata to homogenous structured datasets is hereby the most subtle and challenging task. To assure and improve the quality of the metadata this mapping process is accompanied by • iterative and intense exchange with the community representatives, • usage of controlled vocabularies and community specific ontologies and • formal and semantic validation. Finally the mapped and checked records are uploaded as datasets to the catalogue, which is based on the open source data portal software CKAN. CKAN provides a rich RESTful JSON API and uses SOLR for dataset indexing that enables users to query and search in the catalogue. The homogenization of the community specific data models and vocabularies enables not

  18. Effects of the insect growth regulator, novaluron on immature alfalfa leafcutting bees, Megachile rotundata.

    Science.gov (United States)

    Hodgson, Erin W; Pitts-Singer, Theresa L; Barbour, James D

    2011-01-01

    Alfalfa leafcutting bees, Megachile rotundata F. (Hymenoptera: Megachilidae), are the most common pollinators of alfalfa in the Pacific Northwest. Reports from users of M. rotundata in Idaho, Utah and Colorado have indicated exceptionally poor bee return from fields treated with novaluron to control Lygus spp. Our goal was to evaluate novaluron toxicity to immature M. rotundata using two different possible mechanisms of exposure. One goal was to assess immature mortality via treating nectar-pollen provisions and adults with novaluron. Immature M. rotundata mortality in all novaluron provision dosing treatments was significantly higher than the water or blank controls, providing evidence that novaluron is toxic to progeny in nest cells. The mean cumulative frequency showed that more eggs and 1st-2nd instars died compared to older instars. Female M. rotundata nested similarly in field cages during the field cage experiment; however, there was greater immature mortality in cages where females were fed sugar-water + novaluron compared to sugar-water only. Although females provided adequate provisions, there was a low percentage of egg hatch and larval development when females ingested novaluron before mating and nesting. Novaluron was also present in egg provision of bees collecting resources from novaluron-sprayed plants. At least 84% of progeny died when the females were allowed to mate and nest 24 hours after a novaluron application. Novaluron could be contributing to poor bee return in alfalfa grown for seed. Timely insecticide applications to suppress Lygus spp. is an important consideration to improve ongoing bee health. PMID:21539417

  19. Correlations between environmental factors and wild bee behavior on alfalfa (Medicago sativa) in northwestern China.

    Science.gov (United States)

    Wang, Xiaojuan; Liu, Hongping; Li, Xiaoxia; Song, Yu; Chen, Li; Jin, Liang

    2009-10-01

    To discover the effect of environmental factors on pollinator visitation to flowering Medicago sativa, several field experiments were designed to examine the diurnal movement patterns of wild bee species in the Hexi Corridor of northwestern China. Our study results showed that Megachile abluta, M. spissula, and Xylocopa valga showed unimodal diurnal foraging behavior, whereas Andrena parvula and Anthophora melanognatha showed bimodal diurnal foraging behavior. Correlation analysis indicated that diurnal foraging activities of pollinators were significantly correlated with environmental factors. Correlations of foraging activities versus environmental factors for M. abluta, M. spissula, and X. valga best fit a linear model, whereas those of A. parvula and A. melanognatha best fit a parallel quadratic model. Results of this study indicated that solitary wild bees such as M. abluta, M. spissula, X. valga, A. parvula, and A. melanognatha are potential alfalfa pollinators in the Hexi Corridor. An understanding of the environmental factors that affect the behaviors of different wild bees foraging in alfalfa are basic to the utilization of solitary wild bees in a practical way for increased, or more consistent, pollination of alfalfa for seed production. PMID:19825303

  20. Emergence success and sex ratio of commercial alfalfa leafcutting bees from the United States and Canada.

    Science.gov (United States)

    Pitts-Singer, Theresa L; James, Rosalind R

    2005-12-01

    Samples of overwintering alfalfa leafcutting bee, Megachile rotundata (F.) (Hymenoptera: Megachilidae), cells were sent to the laboratory as loose cells or in nesting boards from bee managers in the United States and in Canada. X-radiographs of cells were used for determining cell contents. Cells containing live prepupae were incubated, and the sex of emerging adults was recorded daily. Cells from which no adult emerged were dissected to determine the developmental stage of dead bees and sex of dead pupae or adults. Bee cells incubated in commercial settings and placed in alfalfa fields by the same bee managers described above also were evaluated to determine adult emergence success. The proportion of live bees in wood nesting boards from the United States was much lower than the live proportion in polystyrene nesting boards from Canada and loose cells overwintered in the United States. For laboratory-incubated loose cells, survival and sex ratios of bees from Canadian sources were statistically higher than those of U.S. bees, but the onset and duration of emergence times were similar. Fewer bees survived in the commercial setting than in the laboratory. Prepupal mortality was significantly higher than pupal or adult mortality, but there was no significant difference between the sexes in the likelihood of survival during incubation. This study supports the commonly held belief that alfalfa leafcutting bees raised in Canada and then sold to the United States represent a more viable source of bees than most bees produced in the United States. PMID:16539094

  1. Evaluation of some weed extracts against field dodder on alfalfa (Medicago sativa).

    Science.gov (United States)

    Habib, S A; Rahman, A A

    1988-02-01

    Experiments were conducted to evaluate the effectiveness of some weed extracts against field dodderCuscuta campestris Yunck. on alfalfa (Medicago stiva L.) and to identify and quantify the phytotoxic agents of these extracts. All concentrations of aqueous extract of every weed showed significant effectiveness on dodder when compared to the untreated plant under lath house and field conditions. Control percentages of the (0.5 g) of Bermuda grass (Cynodon dactylon) and wall goosefoot (Chenopodium murale) ranged between 83 and 96, and the same concentration caused injury to alfalfa foliage up to 43% when applied in the field. Phytotoxic agents were identified as phenolic compounds such as chlorogenic, isochlorogenic,p-coumaric acids, and scopoletin. Their quantities varied with species; Bermuda grass had the highest content (32.2 μg/g dry weight) followed by Johnson grass (Sorghum halepense), well goosefoot, and tumble pigweed (Amaranthus albus). These results might aid in screening for effective alternate approaches for controlling dodder on alfalfa planted for seeds.

  2. Inactivation of Human Norovirus and Its Surrogates on Alfalfa Seeds by Aqueous Ozone.

    Science.gov (United States)

    Wang, Qing; Markland, Sarah; Kniel, Kalmia E

    2015-08-01

    Alfalfa sprouts have been associated with numerous foodborne outbreaks. Previous studies investigated the effectiveness of aqueous ozone on bacterially contaminated seeds, yet little is known about the response of human norovirus (huNoV). This study assessed aqueous ozone for the disinfection of alfalfa seeds contaminated with huNoV and its surrogates. The inactivation of viruses without a food matrix was also investigated. Alfalfa seeds were inoculated with huNoV genogroup II, Tulane virus (TV), and murine norovirus (MNV); viruses alone or inoculated on seeds were treated in deionized water containing 6.25 ppm of aqueous ozone with agitation at 22°C for 0.5, 1, 5, 15, or 30 min. The data showed that aqueous ozone resulted in reductions of MNV and TV infectivity from 1.66 ± 1.11 to 5.60 ± 1.11 log PFU/g seeds; for all treatment times, significantly higher reductions were observed for MNV (P water was similar to that of huNoV, whereas MNV had significantly greater reductions in genomic copies (P ozone-treated viruses alone, with significantly higher levels of inactivation (P ozone indicates that ozone may be a plausible substitute for chlorine as an alternative treatment for seeds. The behavior of TV was similar to that of huNoV, which makes it a promising surrogate for these types of scenarios.

  3. Mycopopulations of alfalfa silage with particular review on toxigenic Fusarium spp.

    Directory of Open Access Journals (Sweden)

    Bočarov-Stančić Aleksandra S.

    2005-01-01

    Full Text Available Mycological and mycotoxicological investigations of alfalfa samples (initial not fermented plant material, as well as silage obtained from unfaded and faded state of the same were performed during the year 2003. Total of 14 fungal species, included in 11 genera, were identified during the present study. The most frequent moulds were Chaetomium piluliferum and their anamorph Botryotrichum piluliferum (83.3% and 66.7% respectively. Potentially toxigenic Fusarium spp. (F. culmorum, F. semitectum and F. sporotrichioides were observed less frequently (from 16.7% to 33.0% and only on initial not fermented alfalfa. From the sample of alfalfa faded state contaminated with 0.25 mg/kg of diacetoxyscirpenol (DAS and 1.28 mg/kg of zearalenone (ZEA F. semitectum SL-B was isolated. The production of fusariotoxins by this strain was later on tested in vitro conditions. Different aeration treatments in semisynthetic medium with glucose (GPK or sucrose (SPK, as well as cultivation on sterilized corn kernels (moisture content 47% were used. The highest yield of DAS (64.0 mg/l was obtained during submerged cultivation of F. semitectum SL-B in GPK (210 rpms, 3 days room temperature. Production of T-2 toxin, but rather poor (0.08 mg/1, was detected only in SPK (150 rpms, 3 days, room temperature. ZEA was found exclusively after 25 days of cultivation on corn kernels at room temperature (21-25°C.

  4. The Undergraduate ALFALFA Team: A Collaboration for Undergraduate Research Opportunities and Faculty Development

    Science.gov (United States)

    Koopmann, Rebecca A.; Balonek, Thomas J.; Cannon, John M.; Coble, Kimberly A.; Craig, David W.; Durbala, Adriana; Finn, Rose; Hallenbeck, Gregory L.; Haynes, Martha P.; Higdon, Sarah; Hoffman, G. Lyle; Kornreich, David A.; Lebron, Mayra E.; Crone-Odekon, Mary; O'Donoghue, Aileen A.; Olowin, Ronald Paul; Pantoja, Carmen; Rosenberg, Jessica L.; Troischt, Parker; Venkatesan, Aparna; Wilcots, Eric M.; ALFALFA Team

    2016-01-01

    Legacy astronomy surveys involve large collaborations over long time periods, making it challenging to involve undergraduates in meaningful projects. Collaborating with faculty at 19 undergraduate-focused institutions across the US and Puerto Rico and with US-NSF funding, the ALFALFA (Arecibo Legacy Fast ALFA) Team has developed the Undergraduate ALFALFA Team, an effective model to promote undergraduate research and faculty development within the ALFALFA HI blind survey project and follow-up programs. This talk will summarize the main components of the program, which include an annual undergraduate workshop at Arecibo Observatory, observing runs at Arecibo, computer infrastructure, summer and academic year research projects, and dissemination at national meetings (e.g., Cannon et al., Collins, Elliott et al, Craig et al., Hansen et al., Johnson et al., Morrison et al., O'Donoghue et al., Smith et al., Sylvia et al., Troischt et al., this meeting). This work has been supported by NSF grants AST-0724918/0902211, AST-075267/0903394, AST-0725380, and AST-1211005.

  5. Metadata Management for Distributed First Principles Calculations in VLab: a Collaborative Grid/Portal System for Geomaterials Computations

    Science.gov (United States)

    da Silveira, P. R.; da Silva, C. R.; Wentzcovitch, R. M.

    2006-12-01

    We describe the metadata and metadata management algorithms necessary to handle the concurrent execution of multiple tasks from a single workflow in a collaborative service oriented architecture environment. Metadata requirements are imposed by the distributed workflow that calculates elastic properties of materials at high pressures and temperatures. We explain the basic metaphor underlying the metadata management, the receipt. We also show the actual java representation of the receipt, and explain how they are XML serialized to be transferred between servers and stored in a database. We also discuss how the collaborative aspect of the user activity on running workflows could potentially lead to rush conditions, how this affects the requirements on metadata, and how these rush conditions are avoided. Finally, we describe an additional metadata structure complimentary to the receipts that contains general information about the workflow. Work supported by NSF/ITR 0428774 (VLab).

  6. DataFinder: Using Ontologies and Reasoning to Enhance Metadata Search

    Science.gov (United States)

    Russ, T. A.; Chalupsky, H.

    2005-12-01

    The Southern California Earthquake Center's Community Modeling Environment uses computer codes for simulation and hazard analysis computations. The process of running workflows using several computational models produces numerous intermediate and final data files. These files have descriptive metadata stored as pairs of attribute names and values. Depending on which software was used to prepare the files, different attribute names and different organizational schemes are used for the metadata. Previous search tools for this metadata repository rely on the user knowing the structure and names of the metadata attributes in order to find stored information. Matters are made even harder because sometimes the type of information in a data file must be inferred. For example, seismic hazard maps are described simply as ``JPEGFile'', with the domain content of the file inferable only by looking at the workflow that produced the file. This greatly limits the ability to actually find data of interest. DataFinder uses ontologies to provide a semantic overlay for the metadata attributes that are used to index data files. A domain ontology is combined with a metadata attribute ontology to link geophysical and seismic hazard domain concepts with the metadata attributes that describe the computational products. DataFinder uses a domain ontology and additional rules expressed in first-order logic to provide this semantic enhancement. The domain and metadata attribute ontology is represented in the PowerLoom representation language. DataFinder is implemented using a hybrid reasoning approach based on combining the strengths of the PowerLoom logical reasoning engine with the database technology underlying the metadata repository to provide scalability. The PowerLoom reasoning engine allows to add semantic enhancements by overlaying the raw metadata with a hierarchy of concepts, providing more abstract views of the data collection. For example, a velocity mesh is one of the

  7. Metadata Quality in Institutional Repositories May be Improved by Addressing Staffing Issues

    Directory of Open Access Journals (Sweden)

    Elizabeth Stovold

    2016-09-01

    Full Text Available A Review of: Moulaison, S. H., & Dykas, F. (2016. High-quality metadata and repository staffing: Perceptions of United States–based OpenDOAR participants. Cataloging & Classification Quarterly, 54(2, 101-116. http://dx.doi.org/10.1080/01639374.2015.1116480 Objective – To investigate the quality of institutional repository metadata, metadata practices, and identify barriers to quality. Design – Survey questionnaire. Setting – The OpenDOAR online registry of worldwide repositories. Subjects – A random sample of 50 from 358 administrators of institutional repositories in the United States of America listed in the OpenDOAR registry. Methods – The authors surveyed a random sample of administrators of American institutional repositories included in the OpenDOAR registry. The survey was distributed electronically. Recipients were asked to forward the email if they felt someone else was better suited to respond. There were questions about the demographics of the repository, the metadata creation environment, metadata quality, standards and practices, and obstacles to quality. Results were analyzed in Excel, and qualitative responses were coded by two researchers together. Main results – There was a 42% (n=21 response rate to the section on metadata quality, a 40% (n=20 response rate to the metadata creation section, and 40% (n=20 to the section on obstacles to quality. The majority of respondents rated their metadata quality as average (65%, n=13 or above average (30%, n=5. No one rated the quality as high or poor, while 10% (n=2 rated the quality as below average. The survey found that the majority of descriptive metadata was created by professional (84%, n=16 or paraprofessional (53%, n=10 library staff. Professional staff were commonly involved in creating administrative metadata, reviewing the metadata, and selecting standards and documentation. Department heads and advisory committees were also involved in standards and documentation

  8. Addition of fructooligosaccharides and alfalfa hay to the diet of weaned piglets on the microbiota and the small intestine morphology

    Directory of Open Access Journals (Sweden)

    Fabio Enrique Lemos Budiño

    2013-01-01

    Full Text Available The goal of this work was to verify the effect of the fructooligossaccharide prebiotic (FOS addition in the diet containing varying levels of alfalfa hay, on the microbiology and intestinal morphology of weaned piglets. It was used 72 piglets, crossed, both sexes, with initial weight of 5.95 ± 0.73 Kg, with approximate age of 21 days. It was evaluated the treatment: T1 – Basal feed + 0% FOS; T2 – Basal feed + 0.3% FOS; T3 – Feed with 5% of alfalfa + 0% FOS; T4 – Feed with 5% of alfalfa + 0.3% FOS; T5 – Feed with 10% of alfalfa + 0% FOS; Feed with 10% of alfalfa + 0.3% FOS. In the end of the experimental period one piglet of each replication was slaughtered for the collection of sample aiming to analyze Salmonela sp. and coliformes and intestinal morphology (height of villus and depht of crypt. The analysis for coliformes didn’t show statistic difference among the levels of FOS and alfalfa hay. It wasn’t find Salmonella sp. colonies in the samples. No difference was observe in the crypt depht (P>0.05 among the treatments. The height of villus and the relation of height of villus per depht of crypt, the group without the addition of FOS didn’t show difference (P>0.05, however, the group supplemented with 0.3% of FOS showed a significant improvement (P<0.05 related to levels of 5% and 10% of alfalfa. There was no influence of treatment on the presence of Salmonella sp. and E. Coli. Regarding intestinal morphology data for villus height and villus height ratio/crypt depth showed the best results in the presence of FOS.

  9. Integration of optical and synthetic aperture radar (SAR) images to differentiate grassland and alfalfa in Prairie area

    Science.gov (United States)

    Hong, Gang; Zhang, Aining; Zhou, Fuqun; Brisco, Brian

    2014-05-01

    Alfalfa presents a huge potential biofuel source in the Prairie Provinces of Canada. However, it remains a challenge to find an ideal single satellite sensor to monitor the regional spatial distribution of alfalfa on an annual basis. The primary interest of this study is to identify alfalfa spatial distribution through effectively differentiating alfalfa from grasslands, given their spectral similarity and same growth calendars. MODIS and RADARSAT-2 ScanSAR narrow mode were selected for regional-level grassland and alfalfa differentiation in the Prairie Provinces, due to the high frequency revisit of MODIS, the weather independence of ScanSAR as well as the large area coverage and the complementary characteristics SAR and optical images. Combining MODIS and ScanSAR in differentiating alfalfa and grassland is very challenging, since there is a large spatial resolution difference between MODIS (250 m) and ScanSAR narrow (50 m). This study investigated an innovative image fusion technique for combining MODIS and ScanSAR and obtaining a synthetic image which has the high spatial details derived from ScanSAR and the colour information from MODIS. The field trip was arranged to collect ground truth to label and validate the classification results. The fusion classification result shows significant accuracy improvement when compared with either ScanSAR or MODIS alone or with other commonly-used data combination methods, such as multiple files composites. This study has shown that the image fusion technique used in this study can combine the structural information from high resolution ScanSAR and colour information from MODIS to significantly improve the classification accuracy between alfalfa and grassland.

  10. Sensor metadata blueprints and computer-aided editing for disciplined SensorML

    Science.gov (United States)

    Tagliolato, Paolo; Oggioni, Alessandro; Fugazza, Cristiano; Pepe, Monica; Carrara, Paola

    2016-04-01

    The need for continuous, accurate, and comprehensive environmental knowledge has led to an increase in sensor observation systems and networks. The Sensor Web Enablement (SWE) initiative has been promoted by the Open Geospatial Consortium (OGC) to foster interoperability among sensor systems. The provision of metadata according to the prescribed SensorML schema is a key component for achieving this and nevertheless availability of correct and exhaustive metadata cannot be taken for granted. On the one hand, it is awkward for users to provide sensor metadata because of the lack in user-oriented, dedicated tools. On the other, the specification of invariant information for a given sensor category or model (e.g., observed properties and units of measurement, manufacturer information, etc.), can be labor- and timeconsuming. Moreover, the provision of these details is error prone and subjective, i.e., may differ greatly across distinct descriptions for the same system. We provide a user-friendly, template-driven metadata authoring tool composed of a backend web service and an HTML5/javascript client. This results in a form-based user interface that conceals the high complexity of the underlying format. This tool also allows for plugging in external data sources providing authoritative definitions for the aforementioned invariant information. Leveraging these functionalities, we compiled a set of SensorML profiles, that is, sensor metadata blueprints allowing end users to focus only on the metadata items that are related to their specific deployment. The natural extension of this scenario is the involvement of end users and sensor manufacturers in the crowd-sourced evolution of this collection of prototypes. We describe the components and workflow of our framework for computer-aided management of sensor metadata.

  11. The effect of dietary alfalfa meal on the chicken meat quality

    Directory of Open Access Journals (Sweden)

    Jana Tkáčová

    2015-12-01

    Full Text Available The purpose of this study was to investigate the effect of feed mixtures with proportion of alflafa meal 4% on body weight of broiler chickens, fat content their meat and oxidative stability meat fat under storage conditions. Final hybrid Cobb 500 chickens were used in the experiment. The broiler chickens were fed with feed mixtures starter from the 1st to the 18th day, grower from the 19th to the 31st day and finisher from the 32nd to the 38th ad libitum. An alfalfa meal of 4% was added in the feed mixtures of experimental group. In our experiment, we used alfalfa meal, which was made from Medicago sativa L. harvested in the bud's phase. The carcasses of broilers were stored at -18° C for a period of nine months. The average weight of chickens at the end of our experiment, the control group was 1685.6 g. In experimental group with addition of 4% alfalfa meal in feed mixtures, the chickens weighed 1709.6 g. The difference in body weight between the groups was not statistically significant (p >0.05. The average fat content in chicken meat was lower in the group with a share of 4% alfalfa meal 2.33 g.100g-1 compared to the fat content in meat chickens control group 2.59 g.100g-1. Differences in fat content in meat between the groups were not statistically significant (p >0.05. In our experiment, the average peroxide value of fat in meat under storage conditions 9 months at -18°C was lower in the group with a share of 4% alfalfa meal 2.42 µmol O2.g-1 compared with an average value of peroxide number 5.79 µmol O2.g-1 in the control group. Medicago sativa L. is an interesting object for research. It is characterized by high content of protein and biologically active substances that are effective for the promotion of health, and also an improvement the nutritional value and technological properties of the poultry food, when is used in feed mixtures.

  12. Oxidative stability of chicken meat during storage influenced by the feeding of alfalfa meal

    Directory of Open Access Journals (Sweden)

    Jana Tkáčová

    2015-05-01

    Full Text Available The aim of our experiment was to determine the effect of the alfalfa meal component in feed mixtures of Ross broiler chickens on oxidative stability of meat. Proportion of alfalfa meal in feed mixtures was 4 and 6%. The results were compared to the control group without alfalfa meal in feed mixtures. At the end of the experiment (day 38, 6 pcs of broiler chickens from each group with an average live body weight over 1 800 g were randomly selected. The samples for chemical analysis consisted of identical proportion of breast and thigh muscle, and about 1 cm2 of skin with subcutaneous fat. Fat from the meat was obtained after the samples drying. A fat was determined by extraction by means of laboratory instrument Det N Gras Selecta P. The oxidative stability of meat on the basis of acid number of fat was determided by chemical analysis. Chicken meat was stored at -18 °C for 12 months and 18 months. The acid number of fat of stored meat for 12 months was 7.38 mg KOH per g in the control group, 7.42 mg KOH per g in the group with a proportion of 4% alfalfa meal, and 11.18 mg KOH per g in the group with proportion 6% alfalfa meal. An acid number of fat of stored meat for 18 months was 5.90 mg KOH per g in the control group, 4.65 mg KOH per g in the group with a proportion of 4% alfalfa meal, and 7.07 mg KOH per g in the group with a proportion of 6% alfalfa meal. Chicken meat is notably sensitive to lipid oxidation because of its high content of polyunsaturated fatty acids. Legislation in Title 5 of Part 3 of the Codex Alimentarius of the Slovak Republic and the Government Regulation No. 286/2003 Coll. in the Annex 4 in Part B provide the requirements for animal fats and meat products. Regulation of the European Parliament and Council (EC No. 853/2004 lays down specific hygiene rules for food of animal origin. In particular, determination of free fatty acids content of rendered animal fat (tallow, lard, other animal fat. Legislative regulation does

  13. Urgency of further developing alfalfa industry in China%我国苜蓿产业亟待振兴

    Institute of Scientific and Technical Information of China (English)

    孙启忠; 玉柱; 徐春城

    2012-01-01

    随着我国畜牧业的快速发展,特别是奶牛业的崛起,对优质饲草尤其是苜蓿(Medicago sativa)的需求量将会越来越大。目前我国苜蓿产量低、品质差、供应量不足,不能满足市场的需求.进口苜蓿呈增加态势。2010年苜蓿的进口量已达22.72万t,对我国的苜蓿产业造成严重威胁。我国苜蓿产业发展受制于许多因素,一直处于徘徊不前状态,急需振兴。应尽快制定苜蓿产业发展战略规划,完善苜蓿生产补贴政策,鼓励科技创新,积极扶持苜蓿龙头企业。整合苜蓿产业资源,建设现代化苜蓿产业示范基地,推进我国苜蓿布局区域化、种植规模化、作业机械化、管理标准化和经营产业化发展,着力打造苜蓿产业带,增强我国苜蓿的综合生产能力和供应能力。推进奶一草一体化。%The rapid development of animal husbandry in China, especially the prosperous development of dairy farming, greatly increases the need for herbage of high quality, particularly alfalfa. This study pointed out that the alfalfa yield was low, and its quality was poor, and the supply of alfalfa did not meet its market demand in China. Consequently, the total quantity of imported alfalfa showed a increasing trend and came to 227 200 t in 2010, threatening the development of alfalfa industry in China. This study pro- posed that it is urgent to develop the alfalfa industry because alfalfa industry was regulated by many fac- tors. Finally, this study proposed some suggestions for further developing the alfalfa industry. Firstly, it was urgent to make development plan of alfalfa industry; secondly, the compensation package needed to be improved for alfalfa producer; thirdly, it was effort to innovate the utilization technology and support the leading enterprise of alfalfa industry; fourthly, establishing the demonstration base with modern technology was necessary by integrating the alfalfa

  14. Metadata Repository for Improved Data Sharing and Reuse Based on HL7 FHIR.

    Science.gov (United States)

    Ulrich, Hannes; Kock, Ann-Kristin; Duhm-Harbeck, Petra; Habermann, Jens K; Ingenerf, Josef

    2016-01-01

    Unreconciled data structures and formats are a common obstacle to the urgently required sharing and reuse of data within healthcare and medical research. Within the North German Tumor Bank of Colorectal Cancer, clinical and sample data, based on a harmonized data set, is collected and can be pooled by using a hospital-integrated Research Data Management System supporting biobank and study management. Adding further partners who are not using the core data set requires manual adaptations and mapping of data elements. Facing this manual intervention and focusing the reuse of heterogeneous healthcare instance data (value level) and data elements (metadata level), a metadata repository has been developed. The metadata repository is an ISO 11179-3 conformant server application built for annotating and mediating data elements. The implemented architecture includes the translation of metadata information about data elements into the FHIR standard using the FHIR Data Element resource with the ISO 11179 Data Element Extensions. The FHIR-based processing allows exchange of data elements with clinical and research IT systems as well as with other metadata systems. With increasingly annotated and harmonized data elements, data quality and integration can be improved for successfully enabling data analytics and decision support. PMID:27577363

  15. Spatial density and movement of the Lygus spp. parasitoid Peristenus relictus (Hymenoptera: Braconidae) in organic strawberries with alfalfa trap crops.

    Science.gov (United States)

    Swezey, Sean L; Nieto, Diego J; Pickett, Charles H; Hagler, James R; Bryer, Janet A; Machtley, Scott A

    2014-04-01

    Alfalfa trap crops are currently used to manage Lygus spp. in organic strawberry fields on the California Central Coast. The retention of Lygus spp. in alfalfa creates aggregated distributions that provide improved opportunities for biological control by the introduced parasitoid Peristenus relictus (Ruthe). The abundance and distribution of P. relictus between two trap crops separated by 50 strawberry rows were analyzed in 2008 and 2010. Parasitism of Lygus spp. nymphs by P. relictus (measured by larval abundance and % parasitism) was greatest in alfalfa trap crops compared with strawberry rows. A significantly positive correlation between host nymphs and P. relictus larvae in and between trap crops was found. Movement of P. relictus adults from a marked alfalfa trap crop into adjacent strawberry rows or trap crops was also studied in 2008 and 2009 using a chicken egg-albumin enzyme-linked immunosorbent assay mark-capture technique. In 2008 and 2009, 85 and 49% of protein-marked wasps were captured from central trap crops, respectively, indicating that alfalfa trap crops act as a concentrated "host-density anchor" in organic strawberry fields. PMID:24763093

  16. Effect of absorbed dose and storage length on electron paramagnetic resonance (EPR) signal strength in irradiated alfalfa seeds

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    A kind of alfalfa seeds was irradiated by 1, 2, 3, 4 and 5 kGy at a dose rate of 6.288 kGy. h-1 in a self-shielded irradiator of 137Cs gamma rays. The EPR spectra, which were measured subsequently between 0.3401and 0.3501 T, showed that there was a direct proportional relationship between the EPR signal strength of free radicals produced by gamma irradiation in the alfalfa seeds and absorbed dose. The first derivative EPR spectra of the alfalfa seeds were very clear and easy to identify. However, the EPR signal strength of the peak-to-peak amplitude decreased rapidly and most of them decayed beyond 50% within 3 days after the seeds were irradiated. It tended to stabilize after half a month since the seeds were irradiated. The differences of the EPR signal strength between the irradiated and unirradiated alfalfa seeds still remained. All seeds were stored at ambient temperature for more than 3months. Therefore, using EPR spectrometry technique to measure free radicals in alfalfa seeds as a means to determine whether the seeds have been irradiated or not is feasible, relatively fast and simple.

  17. Effect of absorbed dose and storage length on electron paramagnetic resonance (EPR) signal strength in irradiated alfalfa seeds

    International Nuclear Information System (INIS)

    A kind of alfalfa seeds was irradiated by 1, 2, 3, 4 and 5 kGy at a dose rate of 6.288 kGy·h-1 in a self-shielded irradiator of 137Cs gamma rays. The EPR spectra, which were measured subsequently between 0.3401 and 0.3501 T, showed that there was a direct proportional relationship between the EPR signal strength of free radicals produced by gamma irradiation in the alfalfa seeds and absorbed dose. The first derivative EPR spectra of the alfalfa seeds were very clear and easy to identify. However, the EPR signal strength of the peak-to-peak amplitude decreased rapidly and most of them decayed beyond 50% within 3 days after the seeds were irradiated. It tended to stabilize after half a month since the seeds were irradiated. the differences of the EPR signal strength between the irradiated and unirradiated alfalfa seeds still remained. All seeds were stored at ambient temperature for more than 3 months. Therefore, using EPR spectrometry technique to measure free radicals in alfalfa seeds as a means to determine whether the seeds have been irradiated or not is feasible, relatively fast and simple. (authors)

  18. Curation and integration of observational metadata in ADS

    Science.gov (United States)

    Accomazzi, Alberto

    2015-08-01

    This presentation discusses the current curation of archive bibliographies and their indexing in the NASA Astrophysics Data System (ADS). Integration of these bibliographies provides convenient cross-linking of resources between ADS and the data archives, affording greater visibility to both data products and the literature associated with them. There are practical incentives behind this effort: it has been shown that astronomy articles which provide links to on-line datasets have a citation advantage over similar articles which don’t link to data. Additionally, the availability of paper-based metrics makes it possible for archivists and program managers use them in order to assess the impact of an instrument, facility, funding or observing program.The primary data curated by ADS is bibliographic information provided by publishers or harvested by ADS from conference proceeding sites and repositories. This core bibliographic information is then further enriched by ADS via the generation of citations and usage data, and through the aggregation of external bibliographic information. Important sources of such additional information are the metadata describing observing proposals from the major missions and archives, the curated bibliographies for data centers, and the sets of links between archival observations and published papers.While ADS solicits and welcomes the inclusion of this data from US and foreign data centers, the curation of bibliographies, observing proposals and links to data products is left to the archives which host the data and which have the expertise and resources to properly maintain them. In this regard, the role of ADS is one of resource aggregation through crowdsourced curation, providing a lightweight discovery mechanism through its search capabilities. While limited in scope, this level of aggregation can still be quite useful in supporting the discovery and selection of data products associated with publications. For instance, a user can

  19. Lignin and Fiber digestibility in Caffeic Acid 3-O-Methyltransferase and Caffeoyl CoA 3-O-Methyltransferase Downregulated Alfalfa

    Science.gov (United States)

    Alfalfa (Medicago sativa L.) is one of the most important forages in the United States. Increasing alfalfa fiber digestibility would improve forage management and ration formulation flexibility. Currently, growers and breeders rely on near infrared spectroscopy (NIRS) to predict forage quality tra...

  20. 7 CFR 202.44 - Proceedings under section 305(b) to determine whether foreign alfalfa or red clover seed is not...

    Science.gov (United States)

    2010-01-01

    ... foreign alfalfa or red clover seed is not adapted for general agricultural use in the United States. 202...) FEDERAL SEED ACT FEDERAL SEED ACT RULES OF PRACTICE Rules Applicable to Other Proceedings § 202.44 Proceedings under section 305(b) to determine whether foreign alfalfa or red clover seed is not adapted...