A field experiment was conducted during rabi 2016-17 and 2017-18, at the Research Farm of Department Agronomy, Punjab Agricultural University, Ludhiana, to study phenological behaviour gobhi sarson (Brassicanapus L.) thermal indices as influenced by drip irrigation (60, 80 100% cumulative pan-evaporation, CPE) fertigation schedules 100 % recommended dose fertilizers, RDF) in comparison with con...

The need for fuzzy knowledge bases arises from many application fields, such as trust management. To represent fuzzy data, a syntactic and semantic extension of RDF is proposed. The syntax adds to each triple a truth value. The semantic for Fuzzy RDF and Fuzzy RDF Schema allows to derive truth values for derived statements as well. Fuzzy RDF/RDFS does not aim to become a standard extension to p...

This demo will show a practical approach to interoperability between RDF and Topic Maps, based on the RTM vocabulary for mapping RDF data to Topic Maps. The demo will use the freely downloadable (registration required) Omnigator topic map browser. We will take an RDF file containing RDF data in the FOAF vocabulary [6] and show how this can be converted to a topic map, then browse the topic map ...

RDF is a knowledge representation language dedicated to the annotation of resources within the Semantic Web. Though RDF itself can be used as a query language for an RDF knowledge base (using RDF consequence), the need for added expressivity in queries has led to the definition of the SPARQL query language. SPARQL queries are defined on top of graph patterns that are basically RDF (and more pre...

An explosion has recently occurred at a silo containing refuse-derived fuels (RDF) in Japan. There is a possibility that microorganisms are involved in generation of combustible gas from RDF and this study was aimed at showing the presence of bacteria that can ferment RDF pellets. All RDF samples tested contained a relatively high number of viable bacterial cells, 1.4x10(5) to 3.2x10(6) viable ...

understanding of the runoff generation processes is important in understanding the magnitude and dynamics ofgroundwater discharge. however, these processes continue to be difficult to quantify and conceptualize. in this study,two digital filter based separation modules, the recursive filtering method (rdf) and a generalization of therecursive digital filter (grdf) were1991–2002 in the hableh ro...

The Resource Description Framework (RDF) is a language for metadata assertions about information resources on the World-Wide Web, and is thus a foundation for a future Semantic Web. The atomic construct of RDF are statements, which are triples consisting of the resource being described, a property, and a property value. A collection of RDF statements can be intuitively understood as a graph: re...

RDF Schema provides means to define vocabulary, structure and constraints for expressing metadata about Web resources. However, formal semantics for the primitives defined in RDF Schema are not provided, and the expressivity of these primitives is not enough for full-fledged ontological modeling and reasoning. To perform these tasks, an additional layer on top of RDF Schema is needed. In this p...

To realize the vision of the Semantic Web, efficient storage and retrieval of large RDF data sets is required. A common technique for persisting RDF data (graphs) is to use a single relational database table, a triple store. But, we believe a single triple store cannot scale for large-scale applications. This paper describes storing and querying persistent RDF graphs in Jena, a Semantic Web pro...

The basic data model for the Semantic Web is RDF. In this paper we address updates in RDF. It is known that the semantics of updates for data models becomes unclear when the model turns, even slightly, more general than a simple relational structure. Using the framework of KatsunoMendelzon, we define a semantics for updates in RDF. Particularly we explore the behavior of this semantics for the ...