Number of co-authors:9
Number of publications with 3 favourite co-authors:Pedro Antunes:Javier Segovia:Jesus Cardenosa:
Nuno M. Guimaraes's 3 most productive colleagues in number of publications:Pedro Antunes:16Teresa Chambel:8Javier Segovia:2
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Nuno M. Guimaraes
Publications by Nuno M. Guimaraes (bibliography)
Chambel, Teresa and Guimaraes, Nuno M. (2002): Context perception in video-based hypermedia spaces. In: Hypertext'02 - Proceedings of the Thirteenth ACM Conference on Hypertext and Hypermedia June 11-15, 2002, College Park, Maryland, USA. pp. 85-94. Available online
Multimedia hypertext has grown from the basic addition of dynamic media only at "leaf" nodes of the hypertext, to higher structured attempts to compose and integrate the different media. One of the core problems in this evolution has been, and still is, the construction and perception of context, making explicit which part of a presentation is relevant when media elements are integrated. The search for contextualized integration of video material with other sources of information has emerged from the work in several domains and from mutually reinforcing needs. The work presented here is centered on this problem: how to provide the perception of context to users or readers, when navigating through a space of heterogeneous media elements, where video plays an important role.
© All rights reserved Chambel and Guimaraes and/or ACM Press
Antunes, Pedro, Guimaraes, Nuno M., Segovia, Javier and Cardenosa, Jesus (1995): Beyond Formal Processes: Augmenting Workflow with Group Interaction Techniques. In: Proceedings of the ACM Conference on Organizational Computing Systems 1995 August 13-16, 1995, Milpitas, California, USA. pp. 1-9.
Guimaraes, Nuno M., Correia, Nuno M. and Carmo, Telmo A. (1992): Programming Time in Multimedia User Interfaces. In: Mackinlay, Jock D. and Green, Mark (eds.) Proceedings of the 5th annual ACM symposium on User interface software and technology November 15 - 18, 1992, Monteray, California, United States. pp. 125-134. Available online
The new media types used in advanced user interfaces and interactive systems introduce time as a significant variable. This paper addresses the architectural support and programming tools that should be provided to the programmer to manage the time dependencies. The approach considers that the basic models and programming paradigms adopted in the manipulation and management of time should be isomorphic with the spatial models used in existing graphical user interfaces. The paper describes the architectural principles of a toolkit designed to support the construction of user interfaces with temporal characteristics. The Ttoolkit is an extension of an existing graphical user interface toolkit, the Xt toolkit. Its design is presented and a sample application is described.
© All rights reserved Guimaraes et al. and/or ACM Press
Marques, Jose Alves, Guimaraes, Nuno M. and Simoes, Luis Pinto (1991): IMAGES: A User Interface Development System. In Interacting with Computers, 3 (2) pp. 131-154.
The paper describes the user interface (UI) environment developed for the SOMIW (Secure Open Multimedia Integrated Workstation) project. The basic goals of the project were the definition of a comprehensive architecture handling all relevant UI concepts and the implementation of an interface generator integrated in the programming environment. Other goals were related to the specific requirements of a multimedia workstation (image, voice synthesis and recognition), distribution and integration with the operating system. The architecture of the user interface management system is based on a conceptual virtual environment defined by an object-oriented computational model, and visualization and input models. This environment is described in the initial sections, followed by an outline of the specification and generation tools. We conclude by describing the internal details of IMAGES, the implementation techniques in development and the target machines.
© All rights reserved Marques et al. and/or Elsevier Science
Puttress, J. J. and Guimaraes, Nuno M. (1990): The Toolkit Approach to Hypermedia. In: Rizk, Antoine, Streitz, Norbert A. and Andre, Jacques (eds.) ECHT 90 - European Conference on Hypertext November 27-30, 1990, Versailles, France. pp. 25-37.
Hypermedia systems are usually developed as a single, self-contained application making the system specialized and difficult to retool for other applications. Thus each system requires the redevelopment of hypermedia storage and display capabilities. As long as developers need to write underlying hypermedia mechanisms, it remains impractical to extend hypermedia to many new domains. Our effort focuses on developing a toolkit that can be used by developers to add hypermedia functionality to their tools, independent of their particular application or environment. By doing this we gain flexibility and provide a common framework allowing applications to share information and user interface capabilities. The toolkit provides a simple hypermedia data model and an object-oriented user interface. The data model stores the underlying hypermedia structure and the application's data. The user interface model separates the data and the view components of the objects, which permits the construction of interfaces independent of the final display platform. The combination of these two components provides a powerful toolkit capable of either adding a touch of hypermedia to an application or constructing a monolithic hypermedia system. We describe the constraints of our development environments, our toolkit, and some typical applications of the toolkit, as well as our future plans.
© All rights reserved Puttress and Guimaraes and/or Cambridge University Press
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