This paper introduces a novel approach to supporting digital library users in organising and annotating material. We have extended the concept of open hypermedia by introducing typed links, which support: addition of (userdefined) semantics to hypertexts, user navigation, and machine supported analysis and synthesis of hypermedia structures. The Webvise open hypermedia system is integrated with the World Wide Web, and has been augmented with a type system. We illustrate the potential use in the context of digital libraries with a scenario of teachers jointly preparing a course based on digital library material.

How to structure diverse (documentation) information sources of an enterprise and how to arrange a workflow with access control are two important issues for online authoring and publishing systems. Aim of this paper is to describe a solution for both problems, which is based on department structure, subject areas, and roles in an enterprise. Our approach will be introduced by presenting the DAPHNE system. DAPHNE provides possibilities to support collaborative authoring on a document hierarchy that reflects the diverse branches of an enterprise’s organization structure and allows diverse (documentation) information sources of an enterprise to be well structured. The role-based access control (RBAC) mechanism implemented within DAPHNE is supported by the document hierarchy as well.

Digital libraries offer much promise for patrons and many challenges for system designers and developers. We envision digital libraries as being more than a relatively permanent and fixed archival collection of digital material to be browsed and queried by information-seeking individuals. A digital library is a versioned (fixed and fluid) and interconnected collection of both permanent and transient documents that allows collaborative as well as individual work practices. Based on this view, the HyTech Digital Library Project focuses on development of hypermedia infrastructure for a special kind of digital library that provides support for scholarly work. HyTech has two main goals: to develop advanced hypermedia infrastructure (middleware services) and, to deploy the developed middleware services in a digital library setting. The development and deployment has been driven by the requirements that arise from analyzing ACM SIGWEB's Digital Library Project called HyNIC. 1.

Many conceptual modeling and system design methodologies provide tools to help system designers to model the real world. No guidelines exist, however, for determining the relationships within conceptual domains or implementations. RNA (Relationship Navigation Analysis), based on a generic relationship taxonomy, provides a systematic way of identifying useful relationships in application domains. Developers can then implement each relationship as a link. Viewing an application domain from the relationship management point of view and modeling from a philosophy of maximum access provides a unique vantage point for application design. We present RNA and its generic relationship taxonomy, describing their use for system analysis. 1. Motivation When reengineering a legacy system for the World Wide Web or developing a new Web application, how does a systems developer determine what to link? A vital aspect of hypermedia system design is identifying relationships and implementing them as lin...

Despite the fact the hypermedia has long been discussed as a suitable format for academic research publications, the academic community has made little progress toward realizing hypermedia publishing. In this paper, we provide an initial framework for considering the problems facing any system designed for publishing academic hypertexts, and propose some first steps our community can take toward realizing this goal. 1