-
Dempsey, L.; Russell, R.; Kirriemur, J.W.: Towards distributed library systems : Z39.50 in a European context (1996)
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- Abstract
- Z39.50 is an information retrieval protocol. It has generated much interest but is so far little deployed in UK systems and services. Gives a functional overview of the protocol itself and the standards background, describes some European initiatives which make use of it, and outlines various issues to do with its future use and acceptance. Z39.50 is a crucial building block of future distributed information systems but it needs to be considered alongside other protocols and services to provide useful applications
- Source
- Program. 30(1996) no.1, S.1-22
-
Heery, R.: Information gateways : collaboration and content (2000)
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- Abstract
- Information subject gateways provide targeted discovery services for their users, giving access to Web resources selected according to quality and subject coverage criteria. Information gateways recognise that they must collaborate on a wide range of issues relating to content to ensure continued success. This report is informed by discussion of content activities at the 1999 Imesh Workshop. The author considers the implications for subject based gateways of co-operation regarding coverage policy, creation of metadata, and provision of searching and browsing across services. Other possibilities for co-operation include working more closely with information providers, and diclosure of information in joint metadata registries
- Date
- 22. 6.2002 19:38:54
-
Dupuis, P.; Lapointe, J.: Developpement d'un outil documentaire à Hydro-Quebec : le Thesaurus HQ (1997)
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- Abstract
- Describes the backgroud to the construction of a thesaurus at Hydro-Quebec, Quebec, Canada. Several information units, linked to form a network, share the same bibliographic database. The need for coherence and efficiency was the principle motive for the construction of the multidisciplinary thesaurus. Describes the construction process, discusses the specifity of the tool, its circulation, and considers its use on a partnership basis with other information services
- Source
- Argus. 26(1997) no.3, S.16-22
-
Dempsey, L.; Russell, R.; Murray, R.: ¬The emergence of distributed library services : a European perspective (1998)
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- Abstract
- This article discusses the emergence of distributed library services drawing on recent European initiatives to describe developments. It focuses on Z39.50-based services. It outlines a descriptive framework for such services and briefly introduces developments in other domains. Projects funded through the EU Telematics Application Programme are highlighted and some recent developments in U.K. higher education are introduced
-
Simeoni, F.: ¬The case for metadata harvesting : how do the library-based services compare with the expert services? (2004)
0.03
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- Abstract
- Metadata harvesting is an increasingly popular model of interaction between the mutually autonomous parties of medium, medium-large federations of digital library services. With a harvesting protocol, in particular, resource descriptions locally available at each party can be served to remote applications for the implementation of federated services, such as resource discovery. This article offers a systematic explanation of the success of the model and its standard implementations in the context of current initiatives for national and international federations.
-
Polleres, A.; Lausen, H.; Lara, R.: Semantische Beschreibung von Web Services (2006)
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- Abstract
- In diesem Kapitel werden Anwendungsgebiete und Ansätze für die semantische Beschreibung von Web Services behandelt. Bestehende Web Service Technologien leisten einen entscheidenden Beitrag zur Entwicklung verteilter Anwendungen dadurch, dass weithin akzeptierte Standards vorliegen, die die Kommunikation zwischen Anwendungen bestimmen und womit deren Kombination zu komplexeren Einheiten ermöglicht wird. Automatisierte Mechanismen zum Auffinden geeigneter Web Services und deren Komposition dagegen werden von bestehenden Technologien in vergleichsweise geringem Maß unterstützt. Ähnlich wie bei der Annotation statischer Daten im "Semantic Web" setzen Forschung und Industrie große Hoffnungen in die semantische Beschreibung von Web Services zur weitgehenden Automatisierung dieser Aufgaben.
-
Milanesi, C.: Möglichkeiten der Kooperation im Rahmen von Subject Gateways : das Euler-Projekt im Vergleich mit weiteren europäischen Projekten (2001)
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- Date
- 22. 6.2002 19:41:59
-
Holm, L.A.: ONE project : results and experiences (1999)
0.02
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- Abstract
- ONE (OPAC Network Project in Europe) project aims at connecting major bibliographic services via Z39.50 and improving access by the EXPLAIN service
-
Cousins, S.; Sanders, A.: Incorporating a virtual union catalogue into the wider information environment through the application of middleware: Interoperability issues in cross-database access (2006)
0.02
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- Abstract
- Purpose - To explore the use of middleware to provide access to a virtual catalogue via Z39.50, allowing its integration with other services. To consider issues arising from the cross-database search process and the problem of interoperability between systems. Design/methodology/approach - Middleware was used to establish a Z39.50 server for an existing virtual union catalogue, InforM25. The Copac physical union catalogue was used to carry out cross-database search tests, investigating the value of query transformation by the middleware and illustrating many of the issues associated with interoperability in cross-database searching. Findings - The test results demonstrate the viability and benefits of using middleware to allow the integration of virtual catalogues with other services. The results also illustrate the range of issues affecting the performance of the virtual catalogue, with supporting evidence from the use of the Copac physical union catalogue for cross-database searching via Z39.50. In particular the discussion highlights the issue of semantic interoperability, as well as emphasising the value of centralised virtual catalogue support. Research limitations/implications - The research was limited to work on a specific virtual union catalogue, that is InforM25, but the results highlight issues with general relevance in the development of any virtual catalogue. The need for more work on response times in the virtual union catalogue is apparent, along with the related issue of result set post processing. Originality/value - This paper provides a practical demonstration of the issues important to those involved in making their local catalogue accessible to services, and individuals, outside their own institution, as well as those working on virtual union catalogue development.
-
Lopatenko, A.; Asserson, A.; Jeffery, K.G.: CERIF - Information retrieval of research information in a distributed heterogeneous environment (2002)
0.02
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- Abstract
- User demands to have access to complete and actual information about research may require integration of data from different CRISs. CRISs are rarely homogenous systems and problems of CRISs integration must be addressed from technological point of view. Implementation of CRIS providing access to heterogeneous data distributed among a number of CRISs is described. A few technologies - distributed databases, web services, semantic web are used for distributed CRIS to address different user requirements. Distributed databases serve to implement very efficient integration of homogenous systems, web services - to provide open access to research information, semantic web - to solve problems of integration semantically and structurally heterogeneous data sources and provide intelligent data retrieval interfaces. The problems of data completeness in distributed systems are addressed and CRIS-adequate solution for data completeness is suggested.
-
Nicholson, D.; Wake, S.: HILT: subject retrieval in a distributed environment (2003)
0.02
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- Abstract
- The HILT High Level Thesaurus Project aims to study and report an the problern of cross-searching and browsing by subject across a range of communities, services, and service or resource types in the UK given the wide range of subject schemes and associated practices in place in the communities in question (Libraries, Museums, Archives, and Internet Services) and taking the international context into consideration. The paper reports an progess to date, focusing particularly an the inter-community consensus reached at a recent Stakeholder Workshop.
-
Hakala, J.: Z39.50-1995: information retrieval protocol : an introduction to the standard and it's usage (1996)
0.02
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- Abstract
- This article describes the Internet information retrieval protocol, Z39.50, and it's usage. The services of Z39.50 are depicted, as are some important terms related to the standard. A description of the OPAC Network in Europe (ONE), an important Z39.50 implementation project is included
-
Hellweg, H.; Krause, J.; Mandl, T.; Marx, J.; Müller, M.N.O.; Mutschke, P.; Strötgen, R.: Treatment of semantic heterogeneity in information retrieval (2001)
0.02
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- Abstract
- Nowadays, users of information services are faced with highly decentralised, heterogeneous document sources with different content analysis. Semantic heterogeneity occurs e.g. when resources using different systems for content description are searched using a simple query system. This report describes several approaches of handling semantic heterogeneity used in projects of the German Social Science Information Centre
-
Zia, L.L.: ¬The NSF National Science, Technology, Engineering, and Mathematics Education Digital Library (NSDL) Program : new projects from fiscal year 2004 (2005)
0.02
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- Abstract
- In fall 2004, the National Science Foundation's (NSF) National Science, Technology, Engineering, and Mathematics Education Digital Library (NSDL) program made new grants in three tracks: Pathways, Services, and Targeted Research. Together with projects started in fiscal years (FY) 2000-03 these new grants continue the development of a national digital library of high quality educational resources to support learning at all levels in science, technology, engineering, and mathematics (STEM). By enabling broad access to reliable and authoritative learning and teaching materials and associated services in a digital environment, the National Science Digital Library expects to promote continual improvements in the quality of formal STEM education, and also to serve as a resource for informal and lifelong learning. Proposals for the FY05 funding cycle are due April 11, 2005, and the full solicitation is available at <http://www.nsf.gov/publications/pub_summ.jsp?ods_key=nsf05545>. Two NSF directorates, the Directorate for Geosciences (GEO) and the Directorate for Mathematical and Physical Sciences (MPS) have both provided significant co-funding for over twenty projects in the first four years of the program, illustrating the NSDL program's facilitation of the integration of research and education, an important strategic objective of the NSF. In FY2004, the NSDL program introduced a new Pathways track, replacing the earlier Collections track. The Services track strongly encouraged two particular types of projects: (1) selection services and (2) usage development workshops. * Pathways projects provide stewardship for educational content and services needed by a broad community of learners; * Selection services projects identify and increase the high-quality STEM educational content known to NSDL; and * Usage development workshops engage new communities of learners in the use of NSDL and its resources.
These three elements reflect a refinement of NSDL's initial emphasis on collecting educational resources, materials, and other digital learning objects, towards enabling learners to "connect" or otherwise find pathways to resources appropriate to their needs. Projects are also developing both the capacities of individual users and the capacity of larger communities of learners to use and contribute to NSDL. For the FY2004 funding cycle, one hundred forty-four proposals sought approximately $126.5 million in total funding. Twenty-four new awards were made with a cumulative budget of approximately $10.2 million. These include four in the Pathways track, twelve in the Services track, and eight in the Targeted Research track. As in the earlier years of the program, sister directorates to the NSF Directorate for Education and Human Resources (EHR) are providing significant co-funding of projects. Participating directorates for FY2004 are GEO and MPS. Within EHR, the Advanced Technological Education program and the Experimental Program to Stimulate Competitive Research are also co-funding projects. Complete information on the technical and organizational progress of NSDL including links to current Standing Committees and community workspaces may be found at <http://nsdl.org/community/nsdlgroups.php>. All workspaces are open to the public, and interested organizations and individuals are encouraged to learn more about NSDL and join in its development. Following is a list of the new FY04 awards displaying the official NSF award number, the project title, the grantee institution, and the name of the Principal Investigator (PI). A condensed description of the project is also included. Full abstracts are available from the NSDL program site (under Related URLs see the link to NSDL program site (under Related URLs see the link to Abstracts of Recent Awards Made Through This Program.) The projects are displayed by track and are listed by award number. In addition, seven of these projects have explicit relevance to applications to pre-K to 12 education (indicated with a * below). Four others have clear potential for application to the pre-K to 12 arena (indicated with a ** below).
-
Ashton, J.: ONE: the final OPAC frontier (1998)
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- Source
- Select newsletter. 1998, no.22, Spring, S.5-6
-
Lunau, C.D.: Z39.50: a critical component of the Canadian resource sharing infrastructure : implementation activities and results achieved (1997)
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- Date
- 3. 3.1999 17:22:57
-
Burrows, T.: ¬The virtual catalogue : bibliographic access for the virtual library (1993)
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- Date
- 8.10.2000 14:47:22
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Severiens, T.; Hohlfeld, M.; Zimmermann, K.; Hilf, E.R.: PhysDoc - a distributed network of physics institutions documents : collecting, indexing, and searching high quality documents by using harvest (2000)
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- Abstract
- PhysNet offers online services that enable a physicist to keep in touch with the worldwide physics community and to receive all information he or she may need. In addition to being of great value to physicists, these services are practical examples of the use of modern methods of digital libraries, in particular the use of metadata harvesting. One service is PhysDoc. This consists of a Harvest-based online information broker- and gatherer-network, which harvests information from the local web-servers of professional physics institutions worldwide (mostly in Europe and USA so far). PhysDoc focuses on scientific information posted by the individual scientist at his local server, such as documents, publications, reports, publication lists, and lists of links to documents. All rights are reserved for the authors who are responsible for the content and quality of their documents. PhysDis is an analogous service but specifically for university theses, with their dual requirements of examination work and publication. The strategy is to select high quality sites containing metadata. We report here on the present status of PhysNet, our experience in operating it, and the development of its usage. To continuously involve authors, research groups, and national societies is considered crucial for a future stable service.
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Teets, M.; Murray, P.: Metasearch authentication and access management (2006)
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- Abstract
- Metasearch - also called parallel search, federated search, broadcast search, and cross-database search - has become commonplace in the information community's vocabulary. All speak to a common theme of searching and retrieving from multiple databases, sources, platforms, protocols, and vendors at the point of the user's request. Metasearch services rely on a variety of approaches including open standards (such as NISO's Z39.50 and SRU/SRW), proprietary programming interfaces, and "screen scraping." However, the absence of widely supported standards, best practices, and tools makes the metasearch environment less efficient for the metasearch provider, the content provider, and ultimately the end-user. To spur the development of widely supported standards and best practices, the National Information Standards Organization (NISO) sponsored a Metasearch Initiative in 2003 to enable: * metasearch service providers to offer more effective and responsive services, * content providers to deliver enhanced content and protect their intellectual property, and * libraries to deliver a simple search (a.k.a. "Google") that covers the breadth of their vetted commercial and free resources. The Access Management Task Group was one of three groups chartered by NISO as part of the Metasearch Initiative. The focus of the group was on gathering requirements for Metasearch authentication and access needs, inventorying existing processes, developing a series of formal use cases describing the access needs, recommending best practices given today's processes, and recommending and pursing changes to current solutions to better support metasearch applications. In September 2005, the group issued their final report and recommendation. This article summarizes the group's work and final recommendation.
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Smith, N.: Z39.50 and the OPAC Network in Europe (ONE) Project (1996)
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- Source
- Information services and use. 16(1996) nos.3/4, S.189-197
