In this paper we study the problem of representing, managing and exchanging hierarchically structured data in the context of a Digital Library (DL). We present the NEsted SeTs for Object hieRarchies (NESTOR) framework defining two set data models that we call: the “Nested Set Model (NS-M)” and the “Inverse Nested Set Model (INSM)” based on the organization of nested sets which enable the repres...

This paper focuses on the use of NISO OpenURL and MPEG-21 Digital Item Processing (DIP) to disseminate complex objects and their contained assets, in a repository architecture designed for the Research Library of the Los Alamos National Laboratory. In the architecture, the MPEG-21 Digital Item Declaration Language (DIDL) is used as the XML-based format to represent complex digital objects. Thro...

Europeana has put in a stretch many known procedures in digital libraries, imposing requirements difficult to be implemented in many small institutions, often without dedicated systems support personnel. Although there are freely available open source software platforms that provide most of the commonly needed functionality such as OAI-PMH support, the migration from legacy software may not be ...

Discovery tools are used in libraries to bring together books, articles, and other resources. Research has focused on user and librarian evaluation of these tools, but there are few evaluations of non-book and non-article sources. Discovery tools can also include metadata for local collections harvested through the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). Creating th...

CDS/ISIS is an Integrated Storage and Information retrieval System of United Nations Educational Scientific and Cultural Organization (UNESCO), which is widely used for managing bibliographical reference ensuring high quality content. The main purpose of this paper is to present the work recently carried out by the Food and Agriculture Organization of the United Nations (FAO) in collaboration w...

Metadata harvesting has been established by the Open Archives Initiative (OAI) as a viable mechanism for connecting a provider of data to a purveyor of services. The Open Digital Library (ODL) model is an emerging framework which attempts to break up the services into appropriate components based also on the basic philosophy of the OAI model. This framework has been applied to various projects ...

This paper discusses processes and experiences gained from creating a national portal (Uppsök) for Swedish undergraduate theses, using a common metadata model and set structure with agreements on semantics on top of OAI-PMH and harvesting from several data providers into a central service provider at the Swedish Royal Library.

OAC (Open Archives Cataloger) is a project aimed at improving metadata management for large corpora of multilingual texts, allowing document storage in distributed repositories. The main technical contribution is the implementation of the OAI-PMH protocol for the Zope web server, including the full repertory of functions: data provider, metadata harvester, static repository gateway, and service...

We will present a new component of our technical framework that was built to provide a brought range of reusable web services for the enhancement of typical scientific retrieval processes. The proposed component computes betweenness of authors in co-authorship networks extracted from publicly available metadata that was harvested using OAI-PMH.