Number of co-authors:17
Number of publications with 3 favourite co-authors:A. H. Anderson:3Anne Marie Fleming:2James L. Alty:2
Jim Mullin's 3 most productive colleagues in number of publications:James L. Alty:35Claire O'Malley:17A. H. Anderson:4
The moment clients realize that revisions are not an all-you-can-eat buffet, suddenly they realize they are not hungry.
-- Lester Beall
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Publications by Jim Mullin (bibliography)
Sanford, Alison, Anderson, Anne H. and Mullin, Jim (2004): Audio channel constraints in video-mediated communication. In Interacting with Computers, 16 (6) pp. 1069-1094.
This study investigated the effects of two types of audio channels upon the effectiveness of task-based interactions in a video-mediated context (VMC). Forty undergraduates completed a collaborative task (The Map Task) using either a full or half-duplex audio channel. Their performance was compared to face-to-face interactions, taken from the Human Communication Research Centre corpus of Map Task Dialogues. Effects of varying the audio channel were explored by comparing task performance, patterns of speech, and establishment of mutual understanding. Users of the full-duplex VMC made insufficient allowance for the VMC context; they completed the task less accurately than face-to-face participants, and interrupted each other more frequently than other participants. Participants in the half-duplex VMC however performed as well as face-to-face participants. They made sensible adaptations to the constraints imposed by the half-duplex VMC context, producing longer dialogues, with more explicit turn-taking management, and taking greater care in establishing mutual knowledge.
© All rights reserved Sanford et al. and/or Elsevier Science
Mullin, Jim, Anderson, A. H., Smallwood, L., Jackson, M. and Katsavras, E. (2001): Eye-Tracking Explorations in Multimedia Communications. In: Proceedings of the HCI01 Conference on People and Computers XV 2001. pp. 367-382.
Jackson, Matthew, Anderson, Anne, McEwan, Rachel and Mullin, Jim (2000): Impact of Video Frame Rate on Communicative Behaviour in Two and Four Party Groups. In: Kellogg, Wendy A. and Whittaker, Steve (eds.) Proceedings of the 2000 ACM conference on Computer supported cooperative work 2000, Philadelphia, Pennsylvania, United States. pp. 11-20.
There has been relatively little research on the impact of different levels of video quality on users of multimedia communication systems. This paper describes a study examining the impact of two levels of video frame rate on pairs and groups of four engaged on a design task, looking at one particular aspect of communication, namely reference. It was found that a low frame rate made speakers more communicatively cautious, using longer descriptions and more elaborations to refer to pictures used in the task, possibly as a result of being less certain that they had been understood. This only occurred in the two party groups despite a prediction that groups of four would be affected most by the frame rate manipulation. This study shows that video quality can have subtle effects on communication and that identical levels of quality may have different effects depending on the situation.
© All rights reserved Jackson et al. and/or ACM Press
Anderson, A. H., Smallwood, Lucy, Macdonald, Rory, Mullin, Jim, Fleming, Anne Marie and O'Malley, Claire (2000): Video Data and Video Links in Mediated Communication: What Do Users Value?. In International Journal of Human-Computer Studies, 52 (1) pp. 165-187.
Most studies of video-mediated, computer-supported cooperative work have investigated the impact of video conference communication links between users. Fewer studies have explored the use of multimedia systems which provide video data. In our study, the perceived benefits of these two sorts of video provision have been directly compared. We explored how users rate the value and usefulness of video links and video data in the same collaborative task, where the video links and data were delivered at different frame rates. Our comparisons of the perceived relative values of teledata and telepresence are based on the responses of 117 users each of whom took part in a session lasting around 45 min in one of the two simulations. Both studies manipulated the quality of multimedia delivery for telepresence and teledata in the same way. The simulations were: (i) the Travel Service Simulation where participants plan a holiday itinerary and (ii) the Financial Service Simulation where participants choose a property and arrange an appropriate mortgage. Participants produced very similar ratings for the perceived quality of the telepresence and the teledata. Subjects across both studies were also in broad agreement on the relative usefulness of the various kinds of multimedia data, teledata being regarded as generally more useful than telepresence. Subjects in both studies tended to rank teledata high in terms of (a) what was most useful, (b) what was the most important feature to preserve and (c) what was the most important to improve. For these multimedia customer services, teledata is more highly valued by users than telepresence. Within such complex multimedia applications, the indication for service delivery then is that, if bandwidth is limited, it would be better assigned to teledata services than to telepresence.
© All rights reserved Anderson et al. and/or Academic Press
Anderson, A. H., Newlands, Alison, Mullin, Jim, Fleming, Anne Marie, Doherty-Sneddon, Gwyneth and Velden, Jeroen van der (1996): Impact of Video-Mediated Communication on Simulated Service Encounters. In Interacting with Computers, 8 (2) pp. 193-206.
The results are reported of three studies of collaborative problem-solving in a simulated travel agency where communication between travel agent and customers is supported by a videolink and shared multimedia tools. The video-mediated contexts (VMCs) were compared with face-to-face and audio-only interactions in terms of the success of the task outcome, the process of communication and decision making and user satisfaction. VMC did not deliver the same benefits as face-to-face interactions. The possible reasons for this are explored as well as the implications of the data for evaluation techniques.
© All rights reserved Anderson et al. and/or Elsevier Science
Alty, James L. and Mullin, Jim (1989): Dialogue Specification in the GRADIENT Dialogue System. In: Sutcliffe, Alistair G. and Macauley, Linda (eds.) Proceedings of the Fifth Conference of the British Computer Society Human Computer Interaction Specialist Group - People and Computers V August 5-8, 1989, University of Nottingham, UK. pp. 151-168.
The need for a more human-centred approach to the design of dialogues for dynamic systems is highlighted and the knowledge-based approach to the design of the dialogue system in the GRADIENT project is described. The system has been designed to take advantage of the benefits of a User Interface Management approach and some deviations from the Seeheim Model are discussed. A dialogue specification technique is described in which the specification is separated into an environmental specification and a control specification. Using SAVE as an example the technique is explained and the resulting tool strategy in GRADIENT is outlined. Three examples of the benefits arising from the use of this specification technique are described -- quicker implementation, the use of a Minimum Presentation Tool and Path Algebra analysis.
© All rights reserved Alty and Mullin and/or Cambridge University Press
Alty, James L. and Mullin, Jim (1987): The Role of the Dialogue System in a User Interface Management System. In: Bullinger, Hans-Jorg and Shackel, Brian (eds.) INTERACT 87 - 2nd IFIP International Conference on Human-Computer Interaction September 1-4, 1987, Stuttgart, Germany. pp. 1007-1012.
The respective roles of the Dialogue Controller and Application Model in a User Interface Management System are discussed in the context of a process control application, and application dependent and independent aspects of the dialogue are identified. A multi-channel dialogue controller is proposed which allows concurrent interaction on the interface and dialogues are implemented as a set of dialogue assistants. Application independent assistants control the transfer of information and application dependent assistants implement the task-orientated conversations. As far as possible the design of an assistant is independent of any other. This eases problems in dialogue design and allows assistants to be defined in a specification language which can be analysed for appropriate properties. Assistants can be constructed using a number of paradigms. An event-driven network approach is given as an example. A possible object-orientated approach is briefly outlined.
© All rights reserved Alty and Mullin and/or North-Holland
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