1,720,958 research outputs found
A Framework for Distributed Open Hypermedia
No full textEarly hypermedia systems are now referred to as closed systems due to their reliance upon proprietary document formats, embedded links, monolithic designs and their inability to integrate with the desktop environment. Advances from the research community gave rise to a new generation of open hypermedia systems. Open hypermedia systems tend to have modular architectures and can offer an extensible hypermedia link service integrated with the desktop environment. One explanation for the unmitigated success of the World Wide Web (WWW) is the way in which common Internet services have been integrated. Although the WWW is open in terms of the platforms and protocols supported, it has several limitations in common with closed hypermedia systems. Described in this thesis is Microcosm TNG, a framework for distributed open hypermedia, able to integrate with both the desktop and the Internet. The abstraction of a hypermedia application is introduced for improving the organisation and the encapsulation of related documents and link services. Such a resource can then be made available to remote users via the Microcosm TNG framework. Architectural extensions to the system are described which enable the hierarchical composition of hypermedia applications to construct rich distributed information spaces
The Development Of A Sound Viewer For An Open Hypermedia System
No full textWhile rich support for a wide variety of media such as text, video and image is common among contemporary hypermedia systems, so too is the inadequate support for audio. The primary reason that audio has not attracted as much attention as other media can be attributed to its obvious lack of visual identity. The main focus of this work was to identify a generic and meaningful visual representation of audio within a hypermedia context, and significantly promote hypermedia support for audio through the provision of a sound viewer. This paper describes the inherent difficulties in providing a consistent interface to audio, and discusses in some depth the issues raised during the development process. The sound viewer is then introduced and the associated concepts described. The creation and traversal of links to and from audio are facilitated by the sound viewer across formats including WAV (proprietary digital sound file format from Microsoft), CD (Compact Disc) Audio and MIDI (Musical Instrument Digital Interface). The resultant viewer provides a unified and extensible framework for interacting with audio from within an open hypermedia environment. The open hypermedia system Microcosm was used as the development platform for this work. Microcosm can be augmented to supply a hypermedia link service to additional media with minimal overhead
Enriching Audio Support In A Hypermedia System
No full textMany hypermedia systems support a wide variety of media such as text, video and pictures, but audio has been somewhat neglected. The central reason that audio has not attracted as much attention as other media is its obvious lack of visual identity. The visual nature of window-based applications, especially window-based hypermedia viewers, meant that the main focus of this work was to identify a meaningful representation of audio within a hypermedia context. This paper introduces the sound viewer and describes the associated concepts. The issues raised during development are also discussed in some depth. This viewer facilitates the creation and traversal of links to and from sound media. The audio media formats supported are WAV[1], CD[2] Audio and MIDI[3]. The resultant viewer provides a unified and extensible framework for interacting with audio media operating from within a open hypermedia environment. Microcosm is the product of research into open hypermedia systems conducted by a group within the department. Microcosm can be augmented to support additional media with minimal overhead. This is largely attributable to the open design of the system which is consequently an ideal experimentation vehicle for the sound viewer design
An Open Framework for Integrating Widely Distributed Hypermedia Resources
No full textThe success of the WWW has served as an illustration of how hypermedia functionality can enhance access to large amounts of distributed information. However, the WWW and many other distributed hypermedia systems offer very simple forms of hypermedia functionality which are not easily applied to existing applications and data formats, and cannot easily incorporate alternative functions which would aid hypermedia navigation to and from existing documents that have not been developed with hypermedia access in mind. This paper describes the extension to a distributed environment of the open hypermedia functionality of the Microcosm system, which is designed to support the provision of hypermedia access to a wide range of source material and application, and to offer straightforward extension of the system to incorporate new forms of information access
Unifying Distributed Processing and Open Hypertext through a Heterogeneous Communication Model
No full textA successful distributed open hypermedia system can be characterised by a scaleable architecture which is inherently distributed. While the architects of distributed hypermedia systems have addressed the issues of providing and retrieving distributed resources, they have often neglected to design systems with the inherent capability to exploit the distributed processing of this information. The research presented in this paper describes the construction and use of an open hypermedia system concerned equally with both of these facets
OHRA: Towards an Open Hypermedia Reference Architecture and a Migration Path for Existing Systems
No full textThe open hypermedia research community recognised that to make progress on defining a protocol to enable third party applications to access open link services, it was necessary to first establish a reference architecture for open hypermedia systems upon which to base discussions. In this paper we argue that there is a need to extend yet further the scope of these requirements. We propose an overall architecture for the integration of existing open hypermedia systems in a distributed and collaborative model, and provide a clear evolution path towards achieving this goal
Microcosm TNG: A Distributed Architecture to Support Reflexive Hypermedia Applications
No full textThis paper will present the "reflexive model" and provide an appreciation of the Microcosm TNG framework through which this model is realised
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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