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Papers by nuno guimaraes

Research paper thumbnail of Complexity, Design and Culture: convergence for digital experiences

Interaction Design and Architecture(s), Feb 10, 2021

The design of digital experiences and sociotechnical solutions in the contemporary society is cha... more The design of digital experiences and sociotechnical solutions in the contemporary society is characterized by increasing complexity. More and more variables are present and unpredictable effects are observed. The complexity of systems calls for increased awareness and problem-solving abilities. In this survey, design in general, and design of the user experience in particular, is positioned in the scope of complexity. Moreover, the design reasoning and methods are framed by culturally determined factors and cognitive styles. This survey aims to converge complexity and complex problem solving, design of the user experience, and cultural variations, reviewing bodies of work to inspire and map interdependencies that shape future challenges in systems and experience design.

Research paper thumbnail of <title>WeatherDigest: an experiment in media conversion</title>

Integration Issues in Large Commercial Media Delivery Systems, 1996

ABSTRACT This paper describes an experimental system (WeatherDigest) for automatic conversion of ... more ABSTRACT This paper describes an experimental system (WeatherDigest) for automatic conversion of TV weather forecasts to HTML documents. This application is presented as an example of a larger system dealing with media understanding, representation and dissemination. An object model for media representation and processing is described and WeatherDigest is presented in terms of this object model. The concepts explored in WeatherDigest are then generalized to a repository of multimedia information (media server). This server can handle requests from clients with different requirements allowing to retrieve the same information in multiple formats.

Research paper thumbnail of Integrating Mobile Communication in a Student Mentoring Program

Proceedings of IADIS International Conference on Applied Computing, 2004

Mentoring programs have been used to enlighten undergraduate university students with employment ... more Mentoring programs have been used to enlighten undergraduate university students with employment opportunities, study direction and career choices by introducing the student to a personal guide who has a similar study background, but has already graduated and is currently employed in the chosen industry. This research project introduces a case study of integrating novel mobile communication technologies into a mentoring program in a university environment. The technology equipment used in the ...

Research paper thumbnail of Hypermedia complexity: Fractal hyperscapes and mind mapping

Cognitive Support for …, 2004

Mainstream research on educational technology has focused on the discovery of more effective ways... more Mainstream research on educational technology has focused on the discovery of more effective ways for conveying" relevant" information to students. A problem that we identified is that students often do not engage with the subject matter, especially when dealing with complex domain representations, even when high quality hypermedia resources are available. With the widespread of multimedia content and the emergence of massive information resources there is a need for powerful and effective learning tools that can ...

Research paper thumbnail of Organizational Change, Evolution, Structuring and Awareness

Page 1. Nuno Guimaraes (Ed.) Organizational Change, Evolution, Structuring and Awareness Organiza... more Page 1. Nuno Guimaraes (Ed.) Organizational Change, Evolution, Structuring and Awareness Organizational Computing Systems Springer Page 2. Table of Contents 1 .Introduction 1 2.Rationale and Birth of the Orchestra Project 3 2.1 A Conceptual Framework 3 ...

Research paper thumbnail of iTV enhanced system for generating multi-device personalized online learning environments

4th AH2004 Workshop on Personalization in Future TV, Eindhoven (The Netherlands), 2004

Abstract. This document briefly describes an iTV Enhanced System capable of generating Online Lea... more Abstract. This document briefly describes an iTV Enhanced System capable of generating Online Learning Environments (OLE), namely, educational websites to be viewed through several types of devices. Explained are the motivations for the development of the above mentioned System, what is new about this System and what we expect to achieve with it. Also presented in this work, in general terms, the system architecture, functionalities and evaluation method. Some conclusions are presented and also future lines of research are ...

Research paper thumbnail of Modular Production of Rich Digital Talking Books

This paper presents a framework for automatic production of rich Digital Talking Books (DTB). The... more This paper presents a framework for automatic production of rich Digital Talking Books (DTB). The production process converts existing audio tapes and OCR-based digitalization of text books into full-fledged, multiple synchronized, multimodal digital books. The framework deals with the content organization processes and User Interface definition. The first one identifies content units and its relations. The latter, based on abstract, yet DTB specific, pattern-based UI specifications, allows the definition of various forms of interaction yet DTB specific, pattern-based UI specifications, allows the definition of various forms of interaction and presentation, required by the diversity and constraints of targets users (e.g. visually impaired persons) and situations of use (e.g. learning). The framework also permits to balance the complexity and flexibility of the generated DTBs, in order to cope with the resources provided on the different execution platform.

Research paper thumbnail of Modular Production of Rich

This paper presents a framework for automatic production of rich Digital Talking Books (DTB). The... more This paper presents a framework for automatic production of rich Digital Talking Books (DTB). The production process converts existing audio tapes and OCR-based digitalization of text books into full-fledged, multiple synchronized, multimodal digital books. The framework deals with the content organization processes and User Interface definition. The first one identifies content units and its relations. The latter, based on abstract, yet DTB specific, pattern-based UI specifications, allows the definition of various forms of interaction and presentation, required by the diversity and constraints of targets users (e.g. visually impaired persons) and situations of use (e.g. learning). The framework also permits to balance the complexity and flexibility of the generated DTBs, in order to cope with the resources provided on the different execution platform.

Research paper thumbnail of AC 2005, Proceedings of the IADIS International Conference on Applied Computing, Algarve, Portugal, February 22-25, 2005, Volume 2

Research paper thumbnail of Architecture In-Play, Future Challenges

Nexus Network Journal

This paper discusses an emerging field of research in architecture, kinetic design. This approach... more This paper discusses an emerging field of research in architecture, kinetic design. This approach has been used in different ways through history, but the technological advances of the ''Third Industrial Revolution'' offer new perspectives on this topic, along with various design innovations. To face this demand, architects must develop new strategies rooted in performance, connectivity and control, and process them to support and inform design. In order to explore these challenges, a group of researchers organized a summer school in 2016. The partnership between ISCTE-IUL and Sapienza University of Rome emerged as an opportunity to join an international community to present recent research, teaching or practice related to

Research paper thumbnail of Organizational Change, Evolution, Structuring and Awareness

Page 1. Nuno Guimaraes (Ed.) Organizational Change, Evolution, Structuring and Awareness Organiza... more Page 1. Nuno Guimaraes (Ed.) Organizational Change, Evolution, Structuring and Awareness Organizational Computing Systems Springer Page 2. Table of Contents 1 .Introduction 1 2.Rationale and Birth of the Orchestra Project 3 2.1 A Conceptual Framework 3 ...

Research paper thumbnail of Organizational Change, Evolution, Structuring, and Awareness: Organizational Computing Systems

1. Introduction.- 2. Rationale and Birth of the Orchestra Project.- 2.1 A Conceptual Framework.- ... more 1. Introduction.- 2. Rationale and Birth of the Orchestra Project.- 2.1 A Conceptual Framework.- 2.2 The Objectives of Orchestra.- 2.3 A Bit of History.- 2.3.1 The Initial Consortium and Proposal.- 2.3.2 Proposal Revision and Final Configuration.- 3. Functionality of the Orchestra Environment.- 3.1 Organizational Analysis.- 3.1.1 Analysis Methodology and Information Gathering.- 3.1.2 Computer-Based Modeling.- 3.2 Office and Workflow Platform.- 3.2.1 The Orchestra User Environment.- 3.2.2 Workflow.- 3.2.3 Security in Orchestra.- 3.2.4 Global Information System.- 3.3 Communication.- 3.3.1 Enhanced Messaging.- 3.3.2 Contextual Communication Services.- 3.4 Decision and Group Interaction.- 3.4.1 Management & Executive Information Systems in Orchestra.- 3.4.2 Interactive Negotiation Tools.- 4. Architectural Issues in Orchestra.- 4.1 Logical Architecture.- 4.2 Specific Architectural Configurations.- 4.2.1 Document Archive Architecture.- 4.2.2 Document Generator Architecture.- 4.2.3 Workflow Engine Architecture.- 4.2.4 Security Architecture.- 4.2.5 Global Information System Architecture.- 4.2.6 MAPI Integration.- 4.2.7 Contextual Communication Architecture.- 4.2.8 MEIS Plug Architecture.- 4.2.9 Interactive Negotiation Tools Architecture.- 4.3 Mechanisms for Modularity.- 4.3.1 Secure and Remote Archive API.- 4.3.2 Orchestra/Elenix 3.0 Document Generator API.- 4.3.3 Orchestra Workflow API - EWA (VI.00, Jul/96).- 4.3.4 Orchestra/Elenix 3.0 Mail Api - ESMA (V2.00, Jun/96).- 5. Technical Information on Components and Prototypes.- 5.1 Taskon/OORAM Technical Data.- 5.1.1 Hardware and Operating Systems.- 5.1.2 Version/Date.- 5.1.3 Language.- 5.1.4 Training.- 5.2 Orchestra/ELENIX Multimedia 3.0.- 5.3 Information Systems Integration.- 5.4 Contextual Communication.- 5.5 Management & Executive Information Systems.- 5.5.1 TASKON/Integrator Technical Information.- 5.6 Interactive Negotiation Tools.- 5.6.1 Prototype System Configuration.- 6. The Pilot Sites.- 6.1 EDP.- 6.1.1 From the Generic Analysis.- 6.1.2 Fundamental Characteristics.- 6.1.3 Activities Carried out in the Pilot.- 6.2 Comunicacoes Nacionais.- 6.2.1 From the Generic Analysis.- 6.2.2 Fundamental Characteristics.- 6.2.3 Activities Carried out in the Pilot.- 6.3 CONUC/UITESA.- 6.3.1 From the Generic Analysis.- 6.3.2 Fundamental Characteristics.- 6.3.3 Activities Carried out in the Pilot.- 6.4 BEST.- 6.4.1 Activities Carried out in the Pilot.- 7. Market and Exploitation.- 7.1 The Market for Orchestra.- 7.2 Products and Services Definition.- 7.3 Direct Exploitation by Industrial Partners.- 8. The Orchestra Partners.- 8.1 INESC.- 8.2 Software AG.- 8.3 SMD Informatica.- 8.4 NOVABASE.- 8.5 TASKON.- 8.6 EDP.- 8.7 EDINFOR.- 8.8 Comunicacoes Nacionais.- 8.9 UITESA.- 8.10 ISCTE.- 8.11 LISLE.- 8.12 UPM.- 9. Dissemination of Results.- 9.1 Dissemination in the Industrial Forum.- 9.2 Dissemination in the R&D.- 10. Conclusion.- 10.1 Project Resources, Management, and Operation.- 10.2 Contributions and Open Directions.- 10.2.1 Workflow Modeling.- 10.2.2 Legacy Systems Integration.- 10.2.3 Agent Mediated Communication.- 10.2.4 Augmentation of Work Processes.- 11. References.- Appendix A - List of Actual (Available) Deliverables.- Appendix B - Addresses and Contact Points.- Appendix C - Internal Survey - Questionnaires and Results.

Research paper thumbnail of Handling Hypermedia Complexity: Fractal Hyperscapes and Mind Mapping

Mainstream research on educational technology has focused on the discovery of more effective ways... more Mainstream research on educational technology has focused on the discovery of more effective ways for conveying" relevant" information to students. A problem that we identified is that students often do not engage with the subject matter, especially when dealing with complex domain representations, even when high quality hypermedia resources are available. With the widespread of multimedia content and the emergence of massive information resources there is a need for powerful and effective learning tools ...

Research paper thumbnail of A Model for Content Representation of Multimedia Information

Research paper thumbnail of On the Design of Group Decision Processes for Electronic Meeting Rooms

CLEI Electronic Journal

This paper reports a set of experiments motivated by the observation that the design of group dec... more This paper reports a set of experiments motivated by the observation that the design of group decision processes is crucial to the success of electronic meeting room usage. Decision processes can be designed with more emphasis either on exchanging meanings (discussing issues) or exchanging artefacts (gene rating and structuring topics). Our problem is that, given a particular case to be discussed in an electronic meeting room, we do not know how to design the meeting for best performance. The paper builds a framework for studying this problem based on the n otion of communication mode. The experiments already made confirm that quality of results varies when different communication modes are used and show that meetings that do not exchange meanings result in solutions with inferior quality.

Research paper thumbnail of Hypervideo on the Web: Models and Techniques for Video Integration

International Journal of Computers and Applications

Résumé/Abstract Hypermedia has proven to be a powerful way to structure and interact with multime... more Résumé/Abstract Hypermedia has proven to be a powerful way to structure and interact with multimedia information. In existing hypermedia frameworks, and particularly on the Web, different media types can be integrated in the same hyperdocument. Given its unique characteristics, true integration of video requires the definition of a more powerful model, defining the semantic of linking videos and other media, and taking into account its spatial and temporal properties. This paper presents the issues involved with providing ...

Research paper thumbnail of Time for Hypervideo on the Web

Research paper thumbnail of Hypermedia genes : an evolutionary perspective on concepts, models, and architectures

Abstract The design space of information services evolved from seminal works through a set of pro... more Abstract The design space of information services evolved from seminal works through a set of prototypical hypermedia systems and matured in open and widely accessible web-based systems. The original concepts of hypermedia systems are now expressed in different forms and shapes. The first works on hypertext invented the term itself, laid out the foundational concept of association or link, and highlighted navigation as the core paradigm for the future information systems. The first engineered systems demonstrated architectural ...

Research paper thumbnail of Multimedia artefacts that help us learn: Perspectives of the UNIBASE Project on distance learning

Research paper thumbnail of The Role of Hypervideo in Learning Environments

Research paper thumbnail of Complexity, Design and Culture: convergence for digital experiences

Interaction Design and Architecture(s), Feb 10, 2021

The design of digital experiences and sociotechnical solutions in the contemporary society is cha... more The design of digital experiences and sociotechnical solutions in the contemporary society is characterized by increasing complexity. More and more variables are present and unpredictable effects are observed. The complexity of systems calls for increased awareness and problem-solving abilities. In this survey, design in general, and design of the user experience in particular, is positioned in the scope of complexity. Moreover, the design reasoning and methods are framed by culturally determined factors and cognitive styles. This survey aims to converge complexity and complex problem solving, design of the user experience, and cultural variations, reviewing bodies of work to inspire and map interdependencies that shape future challenges in systems and experience design.

Research paper thumbnail of <title>WeatherDigest: an experiment in media conversion</title>

Integration Issues in Large Commercial Media Delivery Systems, 1996

ABSTRACT This paper describes an experimental system (WeatherDigest) for automatic conversion of ... more ABSTRACT This paper describes an experimental system (WeatherDigest) for automatic conversion of TV weather forecasts to HTML documents. This application is presented as an example of a larger system dealing with media understanding, representation and dissemination. An object model for media representation and processing is described and WeatherDigest is presented in terms of this object model. The concepts explored in WeatherDigest are then generalized to a repository of multimedia information (media server). This server can handle requests from clients with different requirements allowing to retrieve the same information in multiple formats.

Research paper thumbnail of Integrating Mobile Communication in a Student Mentoring Program

Proceedings of IADIS International Conference on Applied Computing, 2004

Mentoring programs have been used to enlighten undergraduate university students with employment ... more Mentoring programs have been used to enlighten undergraduate university students with employment opportunities, study direction and career choices by introducing the student to a personal guide who has a similar study background, but has already graduated and is currently employed in the chosen industry. This research project introduces a case study of integrating novel mobile communication technologies into a mentoring program in a university environment. The technology equipment used in the ...

Research paper thumbnail of Hypermedia complexity: Fractal hyperscapes and mind mapping

Cognitive Support for …, 2004

Mainstream research on educational technology has focused on the discovery of more effective ways... more Mainstream research on educational technology has focused on the discovery of more effective ways for conveying" relevant" information to students. A problem that we identified is that students often do not engage with the subject matter, especially when dealing with complex domain representations, even when high quality hypermedia resources are available. With the widespread of multimedia content and the emergence of massive information resources there is a need for powerful and effective learning tools that can ...

Research paper thumbnail of Organizational Change, Evolution, Structuring and Awareness

Page 1. Nuno Guimaraes (Ed.) Organizational Change, Evolution, Structuring and Awareness Organiza... more Page 1. Nuno Guimaraes (Ed.) Organizational Change, Evolution, Structuring and Awareness Organizational Computing Systems Springer Page 2. Table of Contents 1 .Introduction 1 2.Rationale and Birth of the Orchestra Project 3 2.1 A Conceptual Framework 3 ...

Research paper thumbnail of iTV enhanced system for generating multi-device personalized online learning environments

4th AH2004 Workshop on Personalization in Future TV, Eindhoven (The Netherlands), 2004

Abstract. This document briefly describes an iTV Enhanced System capable of generating Online Lea... more Abstract. This document briefly describes an iTV Enhanced System capable of generating Online Learning Environments (OLE), namely, educational websites to be viewed through several types of devices. Explained are the motivations for the development of the above mentioned System, what is new about this System and what we expect to achieve with it. Also presented in this work, in general terms, the system architecture, functionalities and evaluation method. Some conclusions are presented and also future lines of research are ...

Research paper thumbnail of Modular Production of Rich Digital Talking Books

This paper presents a framework for automatic production of rich Digital Talking Books (DTB). The... more This paper presents a framework for automatic production of rich Digital Talking Books (DTB). The production process converts existing audio tapes and OCR-based digitalization of text books into full-fledged, multiple synchronized, multimodal digital books. The framework deals with the content organization processes and User Interface definition. The first one identifies content units and its relations. The latter, based on abstract, yet DTB specific, pattern-based UI specifications, allows the definition of various forms of interaction yet DTB specific, pattern-based UI specifications, allows the definition of various forms of interaction and presentation, required by the diversity and constraints of targets users (e.g. visually impaired persons) and situations of use (e.g. learning). The framework also permits to balance the complexity and flexibility of the generated DTBs, in order to cope with the resources provided on the different execution platform.

Research paper thumbnail of Modular Production of Rich

This paper presents a framework for automatic production of rich Digital Talking Books (DTB). The... more This paper presents a framework for automatic production of rich Digital Talking Books (DTB). The production process converts existing audio tapes and OCR-based digitalization of text books into full-fledged, multiple synchronized, multimodal digital books. The framework deals with the content organization processes and User Interface definition. The first one identifies content units and its relations. The latter, based on abstract, yet DTB specific, pattern-based UI specifications, allows the definition of various forms of interaction and presentation, required by the diversity and constraints of targets users (e.g. visually impaired persons) and situations of use (e.g. learning). The framework also permits to balance the complexity and flexibility of the generated DTBs, in order to cope with the resources provided on the different execution platform.

Research paper thumbnail of AC 2005, Proceedings of the IADIS International Conference on Applied Computing, Algarve, Portugal, February 22-25, 2005, Volume 2

Research paper thumbnail of Architecture In-Play, Future Challenges

Nexus Network Journal

This paper discusses an emerging field of research in architecture, kinetic design. This approach... more This paper discusses an emerging field of research in architecture, kinetic design. This approach has been used in different ways through history, but the technological advances of the ''Third Industrial Revolution'' offer new perspectives on this topic, along with various design innovations. To face this demand, architects must develop new strategies rooted in performance, connectivity and control, and process them to support and inform design. In order to explore these challenges, a group of researchers organized a summer school in 2016. The partnership between ISCTE-IUL and Sapienza University of Rome emerged as an opportunity to join an international community to present recent research, teaching or practice related to

Research paper thumbnail of Organizational Change, Evolution, Structuring and Awareness

Page 1. Nuno Guimaraes (Ed.) Organizational Change, Evolution, Structuring and Awareness Organiza... more Page 1. Nuno Guimaraes (Ed.) Organizational Change, Evolution, Structuring and Awareness Organizational Computing Systems Springer Page 2. Table of Contents 1 .Introduction 1 2.Rationale and Birth of the Orchestra Project 3 2.1 A Conceptual Framework 3 ...

Research paper thumbnail of Organizational Change, Evolution, Structuring, and Awareness: Organizational Computing Systems

1. Introduction.- 2. Rationale and Birth of the Orchestra Project.- 2.1 A Conceptual Framework.- ... more 1. Introduction.- 2. Rationale and Birth of the Orchestra Project.- 2.1 A Conceptual Framework.- 2.2 The Objectives of Orchestra.- 2.3 A Bit of History.- 2.3.1 The Initial Consortium and Proposal.- 2.3.2 Proposal Revision and Final Configuration.- 3. Functionality of the Orchestra Environment.- 3.1 Organizational Analysis.- 3.1.1 Analysis Methodology and Information Gathering.- 3.1.2 Computer-Based Modeling.- 3.2 Office and Workflow Platform.- 3.2.1 The Orchestra User Environment.- 3.2.2 Workflow.- 3.2.3 Security in Orchestra.- 3.2.4 Global Information System.- 3.3 Communication.- 3.3.1 Enhanced Messaging.- 3.3.2 Contextual Communication Services.- 3.4 Decision and Group Interaction.- 3.4.1 Management & Executive Information Systems in Orchestra.- 3.4.2 Interactive Negotiation Tools.- 4. Architectural Issues in Orchestra.- 4.1 Logical Architecture.- 4.2 Specific Architectural Configurations.- 4.2.1 Document Archive Architecture.- 4.2.2 Document Generator Architecture.- 4.2.3 Workflow Engine Architecture.- 4.2.4 Security Architecture.- 4.2.5 Global Information System Architecture.- 4.2.6 MAPI Integration.- 4.2.7 Contextual Communication Architecture.- 4.2.8 MEIS Plug Architecture.- 4.2.9 Interactive Negotiation Tools Architecture.- 4.3 Mechanisms for Modularity.- 4.3.1 Secure and Remote Archive API.- 4.3.2 Orchestra/Elenix 3.0 Document Generator API.- 4.3.3 Orchestra Workflow API - EWA (VI.00, Jul/96).- 4.3.4 Orchestra/Elenix 3.0 Mail Api - ESMA (V2.00, Jun/96).- 5. Technical Information on Components and Prototypes.- 5.1 Taskon/OORAM Technical Data.- 5.1.1 Hardware and Operating Systems.- 5.1.2 Version/Date.- 5.1.3 Language.- 5.1.4 Training.- 5.2 Orchestra/ELENIX Multimedia 3.0.- 5.3 Information Systems Integration.- 5.4 Contextual Communication.- 5.5 Management & Executive Information Systems.- 5.5.1 TASKON/Integrator Technical Information.- 5.6 Interactive Negotiation Tools.- 5.6.1 Prototype System Configuration.- 6. The Pilot Sites.- 6.1 EDP.- 6.1.1 From the Generic Analysis.- 6.1.2 Fundamental Characteristics.- 6.1.3 Activities Carried out in the Pilot.- 6.2 Comunicacoes Nacionais.- 6.2.1 From the Generic Analysis.- 6.2.2 Fundamental Characteristics.- 6.2.3 Activities Carried out in the Pilot.- 6.3 CONUC/UITESA.- 6.3.1 From the Generic Analysis.- 6.3.2 Fundamental Characteristics.- 6.3.3 Activities Carried out in the Pilot.- 6.4 BEST.- 6.4.1 Activities Carried out in the Pilot.- 7. Market and Exploitation.- 7.1 The Market for Orchestra.- 7.2 Products and Services Definition.- 7.3 Direct Exploitation by Industrial Partners.- 8. The Orchestra Partners.- 8.1 INESC.- 8.2 Software AG.- 8.3 SMD Informatica.- 8.4 NOVABASE.- 8.5 TASKON.- 8.6 EDP.- 8.7 EDINFOR.- 8.8 Comunicacoes Nacionais.- 8.9 UITESA.- 8.10 ISCTE.- 8.11 LISLE.- 8.12 UPM.- 9. Dissemination of Results.- 9.1 Dissemination in the Industrial Forum.- 9.2 Dissemination in the R&D.- 10. Conclusion.- 10.1 Project Resources, Management, and Operation.- 10.2 Contributions and Open Directions.- 10.2.1 Workflow Modeling.- 10.2.2 Legacy Systems Integration.- 10.2.3 Agent Mediated Communication.- 10.2.4 Augmentation of Work Processes.- 11. References.- Appendix A - List of Actual (Available) Deliverables.- Appendix B - Addresses and Contact Points.- Appendix C - Internal Survey - Questionnaires and Results.

Research paper thumbnail of Handling Hypermedia Complexity: Fractal Hyperscapes and Mind Mapping

Mainstream research on educational technology has focused on the discovery of more effective ways... more Mainstream research on educational technology has focused on the discovery of more effective ways for conveying" relevant" information to students. A problem that we identified is that students often do not engage with the subject matter, especially when dealing with complex domain representations, even when high quality hypermedia resources are available. With the widespread of multimedia content and the emergence of massive information resources there is a need for powerful and effective learning tools ...

Research paper thumbnail of A Model for Content Representation of Multimedia Information

Research paper thumbnail of On the Design of Group Decision Processes for Electronic Meeting Rooms

CLEI Electronic Journal

This paper reports a set of experiments motivated by the observation that the design of group dec... more This paper reports a set of experiments motivated by the observation that the design of group decision processes is crucial to the success of electronic meeting room usage. Decision processes can be designed with more emphasis either on exchanging meanings (discussing issues) or exchanging artefacts (gene rating and structuring topics). Our problem is that, given a particular case to be discussed in an electronic meeting room, we do not know how to design the meeting for best performance. The paper builds a framework for studying this problem based on the n otion of communication mode. The experiments already made confirm that quality of results varies when different communication modes are used and show that meetings that do not exchange meanings result in solutions with inferior quality.

Research paper thumbnail of Hypervideo on the Web: Models and Techniques for Video Integration

International Journal of Computers and Applications

Résumé/Abstract Hypermedia has proven to be a powerful way to structure and interact with multime... more Résumé/Abstract Hypermedia has proven to be a powerful way to structure and interact with multimedia information. In existing hypermedia frameworks, and particularly on the Web, different media types can be integrated in the same hyperdocument. Given its unique characteristics, true integration of video requires the definition of a more powerful model, defining the semantic of linking videos and other media, and taking into account its spatial and temporal properties. This paper presents the issues involved with providing ...

Research paper thumbnail of Time for Hypervideo on the Web

Research paper thumbnail of Hypermedia genes : an evolutionary perspective on concepts, models, and architectures

Abstract The design space of information services evolved from seminal works through a set of pro... more Abstract The design space of information services evolved from seminal works through a set of prototypical hypermedia systems and matured in open and widely accessible web-based systems. The original concepts of hypermedia systems are now expressed in different forms and shapes. The first works on hypertext invented the term itself, laid out the foundational concept of association or link, and highlighted navigation as the core paradigm for the future information systems. The first engineered systems demonstrated architectural ...

Research paper thumbnail of Multimedia artefacts that help us learn: Perspectives of the UNIBASE Project on distance learning

Research paper thumbnail of The Role of Hypervideo in Learning Environments