[Show abstract][Hide abstract] ABSTRACT: Today’s building automation systems must be capable of dealing with a large number
of simultaneously occurring events. Human operators monitor these events in order to
maintain situational awareness, to detect physical intrusion or hardware problems, and
other irregularities. We transferred the so-called temporal mosaic charts to building
environments and compared their use with entropy-enriched Gantt charts and classical
9th Future Security; Security Research Conference, Berlin; 09/2014
[Show abstract][Hide abstract] ABSTRACT: Existing computer technologies poorly support the ideation phase common to graphic design practice. Finding and indexing visual material to assist the process of ideation often fall on the designer, leading to user experiences that are less than ideal. To inform development of computer systems to assist graphic designers in the ideation phase of the design process, we conducted interviews with 15 professional graphic designers about their design process and visual information needs. Based on the study, we propose a set of requirements for an ideation-support system for graphic design.
Journal of the Association for Information Science and Technology. 07/2014;
[Show abstract][Hide abstract] ABSTRACT: Purpose ‐ This article aims to describe how people manage to integrate their use of paper and electronic documents in modern office work environments. Design/methodology/approach ‐ An observational interview type study of 14 participants from 11 offices in eight organizations was conducted. Recorded data were analysed using a thematic analysis method. This involved reading and annotation of interview transcripts, categorizing, linking and connecting, corroborating, and producing an account of the study. Findings ‐ The findings of the study can be categorized into four groups: the roles paper and electronic documents serve in today's offices, the ways in which these documents are managed, the problems associated with their management, and the types of fragmentation that exist in terms of their management and how these are dealt with. Practical implications ‐ The study has identified the need for better integrated management of paper and electronic documents in present-day offices. The findings of the study have then been used to propose a set of guidelines for the development of integrated paper and electronic document management systems. Originality/value ‐ Although similar studies of offices have been conducted in the past, almost all of these studies are prior to the widespread use of mobile and network-based shared technologies in office environments. Furthermore, previous studies have generally failed to identify and propose guidelines for integration of paper and electronic document management systems.
Aslib Journal of Information Management. 01/2014; 66(2).
[Show abstract][Hide abstract] ABSTRACT: Electronic cataloguing systems are used by libraries to provide search mechanisms for finding books in their collections. These systems provide limited, if any, tools for browsing content electronically in a manner similar to browsing books on physical library shelves. Furthermore, library patrons often struggle to physically locate and retrieve books, even after they have found what they are looking for using library catalogue systems. A number of prototype technologies have been developed in recent years to assist library users with the task of locating books. These systems are, however, rather limited in their functionality, and generally do not provide tools for remote browsing of library shelves. In this paper we introduce Metis, a system designed to allow virtual viewing of collections, and to assist with physical retrieval of books using a range of desktop and mobile computing devices.
Proceedings of the 5th ACM SIGCHI symposium on Engineering interactive computing systems; 06/2013
[Show abstract][Hide abstract] ABSTRACT: As telehealth systems are increasingly being adopted by healthcare providers, a growing number of medical practitioners need to learn to use such systems. Despite this, however, most medical schools do not currently include telehealth-related content in their curriculum. In this paper we demonstrate, through examples from our own experience, how the Problem Based Learning method can be used to incorporate telehealth systems in medical science education. We also present a survey of medical students and faculty, conducted at a university in Brazil, to gain the participants' opinions on the nu-case mobile telehealth system. The results of the survey show that nu-case provides support for a range of tasks that a telehealth system needs to cater for in the context of our application area.
Computer-Based Medical Systems (CBMS), 2013 IEEE 26th International Symposium on; 01/2013
[Show abstract][Hide abstract] ABSTRACT: In recent years a growing number of information visualization systems have been developed to assist users with monitoring their energy consumption, with the hope of reducing energy use through more effective user-awareness. Most of these visualizations can be categorized into either some form of a time-series or pie chart, each with their own limitations. These visualization systems also often ignore incorporating contextual (e.g. weather, environmental) information which could assist users with better interpretation of their energy use information. In this paper we introduce the time-pie visualization technique, which combines the concepts of timeseries and pie charts, and allows the addition of contextual information to energy consumption data.
17th International Conference on Information Visualisation; 01/2013
[Show abstract][Hide abstract] ABSTRACT: Massively multiplayer online role-playing games, such as World of Warcraft, have become very popular in recent years. These types of games often provide the player with a wide range of game abilities, weapons, tools, options, stats, etc. which grow in number as the player progresses through the game. This in turn makes the user interface of the game more complex and difficult to interact with. Games such as World of Warcraft attempt to combat this by providing mechanisms (e.g. add-ons) for interface customization by the player. However, it is unclear which aspects of the game interface players prefer to customize, or what effects those customizations have on their gameplay experience. In this paper we present a survey of World of Warcraft players to identify their opinions on game interface customization preferences. The results of this survey are likely to apply to other massively multiplayer online role-playing games.
Proceedings of the 9th international conference on Advances in Computer Entertainment; 11/2012
[Show abstract][Hide abstract] ABSTRACT: Surveillance and diagnosis of new and emerging communicable diseases in remote regions, such as the Amazon, is a challenging task. These regions can be difficult to reach, are sparsely populated, and have limited medical and ICT infrastructure. Medical practitioners and community health agents who work in such regions often have very basic qualifications, and therefore have limited knowledge of new and emerging diseases. The increasing capabilities of mobile devices, such as tablets and smart phones, have made them a useful platform for delivery of medical services in remote locations. In this paper we introduce a system that could potentially support diagnosis of vector-borne diseases such as Bartonellosis and Leishmaniasis in areas where specialist healthcare is scarce. In particular, we focus on the image analysis and classification component of this system, which aims to reduce the chance of misdiagnosing these less common diseases as malaria.
Proceedings of the 13th International Conference of the NZ Chapter of the ACM's Special Interest Group on Human-Computer Interaction; 07/2012
[Show abstract][Hide abstract] ABSTRACT: Teaching elementary programming is a difficult and often frustrating process. Many students fail to grasp the basic concepts and drop out of their programmes of study. Although visual languages with some form of game element have been explored as a solution to this problem, evidence on the success of these is at best mixed, without much empirical evaluation to support various claims that are made by their developers. In this paper we argue for and present a more limited programming game system for teaching basic programming constructs to beginner programmers at junior high school level. We also present an evaluation of this game which shows that students participating in this study enjoyed playing the game and succeeded in advancing through progressively more challenging stages of the game, which rely on understanding the underlying programming constructs.
Proceedings of the 13th International Conference of the NZ Chapter of the ACM's Special Interest Group on Human-Computer Interaction; 07/2012
[Show abstract][Hide abstract] ABSTRACT: While for many years home automation (HA) used to be a niche market for technically minded home owners, chances are that HA will be in widespread use in the near future. There are a number of reasons for this prediction, some of which are elaborated in this article. By means of selected scenarios from ongoing projects we will illustrate how recent developments are guiding the future of HA domain.
echniken fü Menschen im nächsten Jahrzehnt -- Beiträge zum Usability Day X; 05/2012
[Show abstract][Hide abstract] ABSTRACT: It is estimated that global climate change and regional land use and cover changes in the Amazon region will contribute to the spread of vector-borne diseases such as bartonellosis and leishmaniasis. The large geographical distances and the sparsity of human settlements in the region pose challenges to the collaboration among health professionals whose goals range from diagnosing diseases to monitoring their spread. This paper presents work in progress on a system to support the tasks of local healthcare professionals and enabling collection, compilation, sharing and visualisation of data for purposes of epidemiological research and disease surveillance in remote regions.
Computer-Based Medical Systems (CBMS), 2012 25th International Symposium on; 01/2012
[Show abstract][Hide abstract] ABSTRACT: Information visualisation methods can potentially be employed to assist the work of epidemiologists and other health care professionals in mapping the spread of communicable diseases in remote areas, where the task of disease surveillance encompasses temporal elements such as changes in climate, land use and population movements. This paper presents an investigation into the use of time-based visualisation techniques coupled with geographical maps and support for distributed mobile collection of patient data. This study has focused on the development of an information visualisation prototype designed for use by epidemiology researchers on mobile platforms (tablets and smart phones). The prototyping activity has involved the participation of prospective users working in the Amazon region. Initial results are presented and discussed.
Information Visualisation (IV), 2012 16th International Conference on; 01/2012
[Show abstract][Hide abstract] ABSTRACT: A mosaic chart has been proposed for representation of events on a timeline. While early studies demonstrated the effectiveness of mosaics in supporting visualization of multimedia records on a meeting browser, the usability of mosaics as a static timeline visualization has not been studied in more general settings. This paper investigates the use of the mosaic charts for visualization of project schedules. A user study was conducted to compare a building project schedule encoded alternatively as a mosaic or as a Gantt chart. Although the study focused on static graphs, for which the Gantt technique is usually very effective, results showed that the users were as fast and accurate at answering the questions using the mosaic representation as they were using Gantt charts. The analysis and experiment indicated algorithmic, space-filling and interpretation limitations of the mosaic technique. We suggest possible design improvements to overcome some of these limitations.
Information Visualisation (IV), 2011 15th International Conference on; 08/2011
[Show abstract][Hide abstract] ABSTRACT: A range of technology for monitoring electricity consumption at residential homes is gradually becoming available to users. Almost all of these systems, however, only aim to assist users with reducing their total power consumption, without being concerned too much about how those savings are actually made. Our research, aims to provide a basis for design of systems that give users control over management of power usage, so that savings in energy consumption can be made more intelligently. This paper describes the requirements of such a system, and proposes an architecture for these types of ubiquitous systems for residential homes.
Proceedings of the 12th ACM SIGCHI New Zealand Chapter's International Conference on Computer-Human Interaction, CHINZ 2011, Hamilton, New Zealand, July 4-5, 2011; 01/2011
[Show abstract][Hide abstract] ABSTRACT: Paper documents are still an integral component of our everyday working lives, and are likely to remain so for the foreseeable future. Fortunately, advances in electronic technology in recent years have made it possible to develop digital systems that better integrate paper and digital document management. However, as far as we are aware, none of these integrated document management systems have been evaluated to demonstrate whether the users would indeed find them valuable for managing paper documents. In this paper we present a user study of one such system, called SOPHYA, that provides a means of linking the management of real world document artefacts (e.g., folders) with their electronic counterparts, so that document management activities such as locating, retrieving, and filing documents can be better supported, especially for large collections. The study is in the form of a laboratory-based evaluation, in which participants with experience in document management used the system to perform several tasks, such as locating and retrieving folders, and provided feedback based on their own experience. The results of this study show that users are able to apply software functionality they use for storage and retrieval of electronic documents to effectively manage paper documents as well. Our study has also identified a range of other potential benefits that the users envisage for such a technology in their diverse work environments.
Human-Computer Interaction - INTERACT 2011 - 13th IFIP TC 13 International Conference, Lisbon, Portugal, September 5-9, 2011, Proceedings, Part III; 01/2011
[Show abstract][Hide abstract] ABSTRACT: Although there has been a surge in computer games research in recent years, studies of gamers' experience of different game genres are very few. Furthermore, even these few studies of gamers' experience are almost all based on Western/European players. In this paper we present a survey of Japanese gamers' ratings of the importance of a range of elements that contribute to their experience of playing games from different genres. The results of this survey indicate that the ratings of these elements are different across various genres; thus providing designers of each genre with a range of elements that they need to take into account when designing those specific types of games. The results also show that there are small, but significant, differences between males and females in their ratings of some game elements.
Proceedings of the 8th International Conference on Advances in Computer Entertainment Technology, ACE 2011, Lisbon, Portugal, November 8-11, 2011; 01/2011
[Show abstract][Hide abstract] ABSTRACT: The amount of speech data available on-line and in institutional repositories, including recordings of lectures, “podcasts”,
news broadcasts etc, has increased greatly in the past few years. Effective access to such data demands transcription. While
current automatic speech recognition technology can help with this task, results of automatic transcription alone are often
unsatisfactory. Recently, approaches which combine automatic speech recognition and collaborative transcription have been
proposed in which geographically distributed users edit and correct automatically generated transcripts. These approaches,
however, are based on traditional text-editor interfaces which provide little satisfaction to the users who perform these
time-consuming tasks, most often on a voluntarily basis. We present a 3D “transcription game” interface which aims at improving
the user experience of the transcription task and, ultimately, creating an extra incentive for users to engage in a process
of collaborative transcription in the first place.
Knowledge-Based and Intelligent Information and Engineering Systems - 14th International Conference, KES 2010, Cardiff, UK, September 8-10, 2010, Proceedings, Part IV; 01/2010
[Show abstract][Hide abstract] ABSTRACT: The desktop metaphor with its hierarchical structure of folders is the basis of almost all graphical file management systems. Despite this popularity, these systems suffer from several problems, including the restrictiveness of the single inheritance structure of hierarchical file management. Although various alternative systems have been proposed, none of these have gained popularity. We argue that the reason for this failure is that these systems have generally proposed complete alternatives to the hierarchical system, thus ignoring many of its positive aspects. In this paper we describe a 3D graphical file management which complements conventional 2D hierarchical folder structures by allowing visualisation of alternative file relationships.
IMAGAPP 2010 - Proceedings of the International Conference on Imaging Theory and Applications and IVAPP 2010 - Proceedings of the International Conference on Information Visualization Theory and Applications, Angers, France, May 17 - 21, 2010; 01/2010