A Taxonomy of Data Grids for Distributed Data Sharing, Management and Processing

Data Grids have been adopted as the platform for scientific communities that need to share, access, transport, process and manage large data collections distributed worldwide. They combine high-end computing technologies with high-performance networking and wide-area storage management techniques. In this paper, we discuss the key concepts behind Data Grids and compare them with other data sharing and distribution paradigms such as content delivery networks, peer-to-peer networks and distributed databases. We then provide comprehensive taxonomies that cover various aspects of architecture, data transportation, data replication and resource allocation and scheduling. Finally, we map the proposed taxonomy to various Data Grid systems not only to validate the taxonomy but also to identify areas for future exploration. Through this taxonomy, we aim to categorise existing systems to better understand their goals and their methodology. This would help evaluate their applicability for solving similar problems. This taxonomy also provides a "gap analysis" of this area through which researchers can potentially identify new issues for investigation. Finally, we hope that the proposed taxonomy and mapping also helps to provide an easy way for new practitioners to understand this complex area of research.Comment: 46 pages, 16 figures, Technical Repor

Recent Developments in Cultural Heritage Image Databases: Directions for User-Centered Design

published or submitted for publicatio

The lifewatch approach to the exploration of distributed species information

© 2014 Daniel Fuentes, Nicola Fiore. This paper introduces a new method of automatically extracting, integrating and presenting information regarding species from the most relevant online taxonomic resources. First, the information is extracted and joined using data wrappers and integration solutions. Ten, an analytical tool is used to provide a visual representation of the data. Te information is then integrated into a user friendly content management system. Te proposal has been implemented using data from the Global Biodiversity Information Facility (GBIF), the Catalogue of Life (CoL), the World Register of Marine Species (WoRMS), the Integrated Taxonomic Information System (ITIS) and the Global Names Index (GNI). Te approach improves data quality, avoiding taxonomic and nomenclature errors whilst increasing the availability and accessibility of the information.Peer Reviewe

Toward an Epistemic Web

In the beginning knowledge was local. With the development of more complex forms of economic organization knowledge began to travel. The Library of Alexandria was the fulfillment - however partial and transitory - of a vision to bring together all the knowledge of the world. But to obtain the knowledge one had to go to Alexandria. Today the World Wide Web promises to make universally accessible the knowledge of a world grown larger. To be sure, much work remains to be done: many documents need to be made available (i.e. digitized if they are not already, and freed from restrictive access controls); and various biases (economic, legal, linguistic, social, technological) need to be overcome. But what do we do with this knowledge? Is it enough to create a digital library of Alexandria, with (perhaps) improved finding aids? We propose that the crucial question is how to structure knowledge on the Web to facilitate the construction of new knowledge, knowledge that will be critical in addressing the challenges of the emerging global society. We begin by asking three questions about the Web and its future. In the remainder of the paper we explore the possibility of an Epistemic Web in the context of a more general discussion of knowledge representation technologies, technologies used for storing, manipulating and spreading knowledge

Toward an Epistemic Web

In the beginning knowledge was local. With the development of more complex forms of economic organization knowledge began to travel. The Library of Alexandria was the fulfillment - however partial and transitory - of a vision to bring together all the knowledge of the world. But to obtain the knowledge one had to go to Alexandria. Today the World Wide Web promises to make universally accessible the knowledge of a world grown larger. To be sure, much work remains to be done: many documents need to be made available (i.e. digitized if they are not already, and freed from restrictive access controls); and various biases (economic, legal, linguistic, social, technological) need to be overcome. But what do we do with this knowledge? Is it enough to create a digital library of Alexandria, with (perhaps) improved finding aids? We propose that the crucial question is how to structure knowledge on the Web to facilitate the construction of new knowledge, knowledge that will be critical in addressing the challenges of the emerging global society. We begin by asking three questions about the Web and its future. In the remainder of the paper we explore the possibility of an Epistemic Web in the context of a more general discussion of knowledge representation technologies, technologies used for storing, manipulating and spreading knowledge

Nigeria Federalism And Fiscal Federalism

Nigeria federalism is beset with structural imbalance and as such true federalism implies that the federating units should pursue their own development at their own pace, utilizing resources within their territory and under their control. In recent times the imbalance in revenue allocation has informed several section of the country to agitate self- determination and resource control. In order to address this ugly predicament, two objectives and research questions were raised to guide the study. The buchan fiscal residuum theory was adopted as theoretical framework for the study. The study relied on secondary data and as such historical design was employed. Content analytical technique was used to analyze the data derived from the secondary sources. Based on the analysis, it was found that the current revenue allocation formula is no longer visible which has also led to several agitations from the federating units. The study recommended among others that revenue allocation formula should favour the federating units more so as to enable them boost their revenue capacity for effective and efficient developmen

Building FLOW: Federating Libraries on the Web

Individuals, teams, organizations, and networks can be thought of as tiers or classes within the complex grid of technology and practice in which research documentation is both consumed and generated. The panoply of possible classes share with the others a common need for document management tools and practices. The distinctive document management tools and practices used within each represent boundaries across which information could flow openly if technology and metadata standards were to provide an accessible digital framework. The CERN Document Server (CDS), implemented by a research partnership at the San Diego Supercomputer Center (SDSC), establishes a prototype tiered repository system for such a panoply. Research suggests modifications to enable cross-domain information flow and is represented as a metadata grid

Lyceum: A Multi-Protocol Digital Library Gateway

Lyceum is a prototype scalable query gateway that provides a logically central interface to multi-protocol and physically distributed, digital libraries of scientific and technical information. Lyceum processes queries to multiple syntactically distinct search engines used by various distributed information servers from a single logically central interface without modification of the remote search engines. A working prototype (http://www.larc.nasa.gov/lyceum/) demonstrates the capabilities, potentials, and advantages of this type of meta-search engine by providing access to over 50 servers covering over 20 disciplines

A Semantic Web Approach to Heterogeneous Metadata Integration

[[abstract]]Heterogeneous metadata integration is an issue in digital libraries. Mapping is often used for an integrated metadata access, but the implicit knowledge and relations embedded in metadata are ignored. This paper aims to present a semantic web approach to heterogeneous metadata integration of biodiversity repositories. First, implicit knowledge and relations in metadata are extracted out and transformed into a shared ontology with expression of RDF and OWL languages. Next the shared ontology plays an inter-lingua role in harmonizing heterogeneous metadata to achieve an ontology mapping with a unified view. Then the shared ontology is expressed by SWRL for inference query to offer in-depth semantic discovery. Finally four question answering oriented queries are employed to examine the feasibility of the shared ontology for heterogeneous metadata integration.[[notice]]補正完畢[[incitationindex]]EI[[booktype]]紙