This paper describes work in progress in the gViz project. We suggest four areas in which XML sho... more This paper describes work in progress in the gViz project. We suggest four areas in which XML should be applicable: data representation, visualization presentation, visualization application description, and audit trail for project history. We present initial thoughts on these areas.
ABSTRACT Grid computing provides a challenge for visualization system designers. In this research... more ABSTRACT Grid computing provides a challenge for visualization system designers. In this research, we evolve the dataflow concept to allow parts of the visualization process to be executed remotely in a secure and seamless manner. We see dataflow at three levels: an abstract ...
ABSTRACT In this paper, we describe a component-oriented approach to distributed cooperative work... more ABSTRACT In this paper, we describe a component-oriented approach to distributed cooperative working with particular reference to scientific visualization. The approach is being developed based on insights gained in previous work on dataflow architectures for ...
In this paper reference models for visualization systems that have appeared in the literature are... more In this paper reference models for visualization systems that have appeared in the literature are surveyed and a new reference model for distributed cooperative visualization developed in the MANICORAL project (funded by the EU Telematics Programme) is described. The relationship of earlier models to the new model is discussed. A number of cooperative visualization systems that have been reported in the literature are compared in the framework of the MANICORAL model.
Graphics and networking are enabling technologies that are of use in an increasing range of appli... more Graphics and networking are enabling technologies that are of use in an increasing range of application areas.The Esprit argosi project is working to advance the state of the art in the transfer of graphical data across international public data networks, and to improve the quality and applicability of standards in this area.The paper describes the methodology used in the project and progress to date. The project demonstrates that integration and harmonization between different standardization areas are of key importance to the development of applications, and it has initiated the development of a prototype application demonstrator.
Collaborative tools are developed to support work being undertaken by dispersed teams. As well as... more Collaborative tools are developed to support work being undertaken by dispersed teams. As well as allowing voice and audio, several initiatives have supported collaborative information-rich tasks by enabling dispersed participants to share their visualization insights and to exercise some distributed control. In previous work, tools for collaborative visualization have been based on dataflow visualization systems, allowing visual programs to be rapidly prototyped and allowing not only the sharing of final results but also the process of obtaining them. However there are a number of issues: (1) the need for software policy changes, according to different meeting styles; (2) the presence of competing continuous flows, including voice and video of the participants and visualization movie sequences, in addition to bulk data flows; and (3) the dynamics of available resources which vary between participants or between mobile and office situations or within a single meeting. This need for adaptation is being studied in the Visual Beans project in the UK. The technologies under study include component technology, based on Java and CORBA, the use of continuous media in CORBA components, quality of service (QoS) monitoring and the use of open bindings.
The rise of mobile computing and wireless network technology means that, increasingly, applicatio... more The rise of mobile computing and wireless network technology means that, increasingly, applications must adapt to their environment, in particular network connectivity and resource availability. This paper outlines the TOAST middleware platform which provides component-oriented CORBA support for adaptive distributed multimedia applications. In particular, the paper examines how the areas of reflection and open implementation have shaped the approach to adaptation support in TOAST. The paper then discusses novel ongoing research which is investigating middleware support for distributed cooperative visualization using TOAST as a base.
Agents are becoming increasingly common as a means of structuring interactive systems, due to the... more Agents are becoming increasingly common as a means of structuring interactive systems, due to the highly complex and concurrent nature of modern systems. The manner in which interaction between these agents is specified is of fundamental importance, and must pay heed to expressivity and reuse concerns. There are also concerns specific to interactive systems, and in particular the need to specify and reason about user-system dialogue. We have shown previously that the standard model of object interaction is inadequate with respect to these concerns, and that the action model performs better with respect to these criteria. In this paper these results are drawn together with approaches previously taken in interactive systems. From this basis a schema calculus with interleaving semantics is proposed, which better addresses the concerns of expressivity and reuse in the interactive systems context.
Fuzzy Learning in Multi-Agents Based Interactive Systems
... No tags have been applied to this document. BibTeX | Add To MetaCart. @INPROCEEDINGS{ Gorgan9... more ... No tags have been applied to this document. BibTeX | Add To MetaCart. @INPROCEEDINGS{ Gorgan97fuzzylearning, author = {Dorian Gorgan and ... 1983. 11, MADE: A multimedia application development environment, Report CS-R9369 Herman, Reynolds, et al. - 1993. ...
This paper was inspired by the Components/ Frameworks approach to a Reference Model for computer ... more This paper was inspired by the Components/ Frameworks approach to a Reference Model for computer graphics, currently under discussion in the ISO computer graphics subject committee. The paper shows how a formal description of the GKS input model may be given in Hoare's CSP notation and explores some extensions in which some of the components in the GKS model are replaced by more interesting ones. The paper thus demonstrates some of the power and flexibility inherent in the Component/ Frameworks idea. The use of a formal notation led to a deepening of the authors' understanding of the input model and suggested some different ways of looking at the input model.
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Papers by David Duce