Papers by Guillermo Power
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A digital archive, together with its users and its contents, does not exist in isolation- there i... more A digital archive, together with its users and its contents, does not exist in isolation- there is a cycle of activities which provides the context for the archive’s existence. In arguing for the broadening of the traditional view of digital libraries as merely collections towards the processes of collecting and deploying, we have developed an “extended” digital library environment for orthopaedic surgeons which bridges the gap between the undertaking of experimental work and the dissemination of its results through electronic publication. However, in embracing such an approach, we must also consider that the archive should be able to evolve in accordance with the changing needs of its users — we cannot predict in advance the myriad different types of experiment that future users will want to carry out. This paper therefore discusses our recent efforts in addressing this issue through the implementation of a user-oriented Template Generation Toolkit.
A digital library, together with its users and its contents, does not exist in isolated splendour... more A digital library, together with its users and its contents, does not exist in isolated splendour; nor in hypertext terms is it merely the intertextual relationships between its texts. There is a cycle of activities which provides the context for the library’s existence, and which the library supports through its various roles of information access, discovery, storage, dissemination and preservation. This paper describes the role of digital library systems in the undertaking of science, and in particular in the context of the recent developments of the Grid for computer-supported scientific collaboration and Virtual Universities for computersupported education. This paper focuses on a specific framework, the Dynamic Review Journal, which supports the development and dissemination of documents by assisting authors in collating and analysing experimental results, organising internal project discussions, and producing papers. By bridging the gap between the undertaking of experimental ...
2002, 2002
As computing becomes ever more pervasive in everyday life, new interface
metaphors are urgently ... more As computing becomes ever more pervasive in everyday life, new interface
metaphors are urgently required for mobile and multi-modal applications. In
this paper, we consider the issues of realism and naturalness in virtual ‘talking
head’ characters. Specifically, we address the two questions: (1) What is the
most appropriate degree of visual realism for a talking head, and does this vary
with the degree of interaction? (2) To what extent should the naturalness of
the synthetic speech match the realism of the talking head? Experiments are
described that provide partial answers, by asking subjects to rate the interfaces
on five attributes, as well as providing informal comments. Indications are that
users prefer an intermediate level of visual realism, perhaps because this matches
the underlying technology (animation, speech synthesis) best. Question (2)
is very difficult to answer because of the difficulty of controlling naturalness
in a synthesiser. Using three different TTS engines, we found that ratings
across attributes varied with the synthesiser although average overall scores
were very similar. Interestingly, subjects were not always aware when different
synthesisers were being employed.
A digital library, together with its users and its contents, does not exist in isolated splendour... more A digital library, together with its users and its contents, does not exist in isolated splendour; nor in hypertext terms is it merely the intertextual relationships between its texts. There is a cycle of activities which provides the context for the library's existence, and which the library supports through its various roles of information access, discovery, storage, dissemination and preservation. This paper describes the role of digital library systems in the undertaking of science, and in particular in the context of the recent developments of the Grid for computer-supported scientific collaboration and Virtual Universities for computersupported education. This paper focuses on a specific framework, the Dynamic Review Journal, which supports the development and dissemination of documents by assisting authors in collating and analysing experimental results, organising internal project discussions, and producing papers. By bridging the gap between the undertaking of experimental work and the dissemination of its results through electronic publication, this work addresses the cycle of activity in which a digital library rests.
A digital archive, together with its users and its contents, does not exist in isolation-there is... more A digital archive, together with its users and its contents, does not exist in isolation-there is a cycle of activities which provides the context for the archive's existence. In arguing for the broadening of the traditional view of digital libraries as merely collections towards the processes of collecting and deploying, we have developed an "extended" digital library environment for orthopaedic surgeons which bridges the gap between the undertaking of experimental work and the dissemination of its results through electronic publication. However, in embracing such an approach, we must also consider that the archive should be able to evolve in accordance with the changing needs of its users-we cannot predict in advance the myriad different types of experiment that future users will want to carry out. This paper therefore discusses our recent efforts in addressing this issue through the implementation of a user-oriented Template Generation Toolkit.
People and Computers XVI - Memorable Yet Invisible, 2002
Fifth IEEE International Conference on Advanced Learning Technologies (ICALT'05), 2005
This paper presents an innovative approach to personalize on-line content to the needs of individ... more This paper presents an innovative approach to personalize on-line content to the needs of individual learners. We use a regular educational environment, the Blackboard TM Learning Management System, with a new approach: we add adaptivity and personalization to it by means of authoring the goaloriented material in an Adaptive Hypermedia authoring system, MOT, and delivering it in Blackboard via a conversion to the SCORM specification. This represents the first attempt to connect Adaptive Hypermedia and Learning Management Systems.
As computing becomes ever more pervasive in everyday life, new interface metaphors are urgently r... more As computing becomes ever more pervasive in everyday life, new interface metaphors are urgently required for mobile and multi-modal applications. In this paper, we consider the issues of realism and naturalness in virtual 'talking head' characters. Specifically, we address the two questions: (1) What is the most appropriate degree of visual realism for a talking head, and does this vary with the degree of interaction? (2) To what extent should the naturalness of the synthetic speech match the realism of the talking head? Experiments are described that provide partial answers, by asking subjects to rate the interfaces on five attributes, as well as providing informal comments. Indications are that users prefer an intermediate level of visual realism, perhaps because this matches the underlying technology (animation, speech synthesis) best. Question (2) is very difficult to answer because of the difficulty of controlling naturalness in a synthesiser. Using three different TTS engines, we found that ratings across attributes varied with the synthesiser although average overall scores were very similar. Interestingly, subjects were not always aware when different synthesisers were being employed. ½º ÁÒØÖÓ Ù Ø ÓÒ The accelerating convergence of computer and communications technologies [Damper et al., 1994] together with ever-increasing use of these technologies by non-technical members of the public demand new interaction metaphors for mobile environments. One such metaphor gaining popularity is that of the conversational partner or 'agent', in which the device appears to the user as a virtual human, capable of understanding natural language and generating synthetic speech. In this paper, we focus on the 'talking ½
Previous approaches to adaptive presentation have high- lighted conflicts of interest between ada... more Previous approaches to adaptive presentation have high- lighted conflicts of interest between adapting the content, media type or quality and structure of a presentation. By using the three level model of narrative as a starting point, we can gain a greater understanding of the relationship be- tween these. In this paper we present the prototype Hyper- doc system, which applies
The Virtual Orthopaedic European University provides an infrastructure for clinicians to manage t... more The Virtual Orthopaedic European University provides an infrastructure for clinicians to manage the administrative, research and educational workload of a university within the digital domain. An aim of the project is to maximise the relationship between different pedagogical approaches, tools and resources in a novel learning environment, while providing support for decision-making using a toolkit approach. This paper focuses on a specific framework, the Dynamic Review Journal, which supports the development and dissemination of documents by assisting authors in collating and analysing experimental results, organising internal project discussions, and in producing papers. The system has been deployed in a local hospital and is presently being deployed to support a regional training service.
An archive of digital literature, together with its users and its contents, does not exist in iso... more An archive of digital literature, together with its users and its contents, does not exist in isolated splendour. There is a cycle of activities which provides the context for the archive's existence, and which the archive supports through its various roles of information access, discovery, storage, dissemination and preservation. This paper focuses on a specific framework, the Dynamic Review Journal, which supports the development and dissemination of literature by assisting authors in collating and analyzing experimental ...
… of Healthcare Digital …, 2004
A digital archive, together with its users and its contents, does not exist in is olation-there i... more A digital archive, together with its users and its contents, does not exist in is olation-there is a cycle of activities which provides the context for the archi ve's existence. In arguing for the broadening of the traditional view of digital libraries as merely collections towards the processes of collecting and deploying, we have developed an``extended''digital library environment for orthopaedic s urgeons which bridges the gap between the undertaking of experimental work and th e dissemination of its results through electronic publication. ...
The objective to build support for the digital library systems in orthopaedics, and in particular... more The objective to build support for the digital library systems in orthopaedics, and in particular in the context of the Virtual Universities for computer-supported education and communication has been achieved. This was done by bridging the gap between the undertaking of experimental work and the dissemination of its results through electronic publication. This work addresses the cycle of activity in which a digital library rests. The authors argue that publishing/dissemination/research/learning are equally important parts ...
… of Southampton ECSTR …, 2003
Previous approaches to adaptive presentation have highlighted conflicts of interest between adapt... more Previous approaches to adaptive presentation have highlighted conflicts of interest between adapting the content, media type or quality and structure of a presentation. By using the three level model of narrative as a starting point, we can gain a greater understanding of the relationship between these. In this paper we present the prototype Hyperdoc system, which applies adaptive techniques at the separate levels of narrative in order to achieve a tailored web presentation within a certain domain.
Proceedings of the ACM Conference on Hypertext, 2004
Health Informatics Journal, 2006
A digital archive, together with its users and its contents, does not exist in isolation-there is... more A digital archive, together with its users and its contents, does not exist in isolation-there is a cycle of activities which provides the context for the archive's existence. In arguing for the broadening of the traditional view of digital libraries as merely collections towards the processes of collecting and deploying, we have developed an extended digital library environment for orthopaedic surgeons which bridges the gap between the undertaking of experimental work and the dissemination of its results through electronic publication.
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Papers by Guillermo Power
metaphors are urgently required for mobile and multi-modal applications. In
this paper, we consider the issues of realism and naturalness in virtual ‘talking
head’ characters. Specifically, we address the two questions: (1) What is the
most appropriate degree of visual realism for a talking head, and does this vary
with the degree of interaction? (2) To what extent should the naturalness of
the synthetic speech match the realism of the talking head? Experiments are
described that provide partial answers, by asking subjects to rate the interfaces
on five attributes, as well as providing informal comments. Indications are that
users prefer an intermediate level of visual realism, perhaps because this matches
the underlying technology (animation, speech synthesis) best. Question (2)
is very difficult to answer because of the difficulty of controlling naturalness
in a synthesiser. Using three different TTS engines, we found that ratings
across attributes varied with the synthesiser although average overall scores
were very similar. Interestingly, subjects were not always aware when different
synthesisers were being employed.
metaphors are urgently required for mobile and multi-modal applications. In
this paper, we consider the issues of realism and naturalness in virtual ‘talking
head’ characters. Specifically, we address the two questions: (1) What is the
most appropriate degree of visual realism for a talking head, and does this vary
with the degree of interaction? (2) To what extent should the naturalness of
the synthetic speech match the realism of the talking head? Experiments are
described that provide partial answers, by asking subjects to rate the interfaces
on five attributes, as well as providing informal comments. Indications are that
users prefer an intermediate level of visual realism, perhaps because this matches
the underlying technology (animation, speech synthesis) best. Question (2)
is very difficult to answer because of the difficulty of controlling naturalness
in a synthesiser. Using three different TTS engines, we found that ratings
across attributes varied with the synthesiser although average overall scores
were very similar. Interestingly, subjects were not always aware when different
synthesisers were being employed.