ORCID Profile
0000-0002-0100-9846
Current Organisation
University of York
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Publisher: Springer International Publishing
Date: 2020
Publisher: ACM
Date: 22-04-2006
Publisher: Springer US
Date: 1997
Publisher: Springer Berlin Heidelberg
Publisher: Springer International Publishing
Date: 2020
Publisher: Springer International Publishing
Date: 2020
Publisher: ACM Press
Date: 2005
Publisher: Springer Berlin Heidelberg
Date: 2004
Publisher: Springer International Publishing
Date: 2016
Publisher: ACM
Date: 10-04-2010
Publisher: Springer London
Date: 2006
Publisher: ACM
Date: 05-10-2015
Publisher: Springer London
Date: 2013
Publisher: SAGE Publications
Date: 1998
DOI: 10.1177/026461969801600107
Abstract: Independent travel is a source of anxiety for many blind people and indeed some avoid it altogether. The MoBIC (Mobility of Blind and Elderly People Interacting with Computers) project is developing a new type of travel aid based on the emerging technologles of geographical information systems (GIS) and the global positioning system (GPS) of satellites. The aid includes two components, a pre-journey planning system and a system which will assist travellers on journeys. The extensive involvement of potential users is an important feature of the project and this paper reports on the many Interviews conducted with blind people. Satisfaction with current levels of mobility, problems encountered in independent travel, the concept of safe travel and disorientation are all discussed.
Publisher: ACM Press
Date: 2007
Publisher: Springer International Publishing
Date: 2015
Publisher: ACM
Date: 21-10-2013
Publisher: ACM
Date: 21-10-2013
Publisher: Springer International Publishing
Date: 2015
Publisher: Springer Berlin Heidelberg
Date: 2006
DOI: 10.1007/11788713_23
Publisher: CRC Press
Date: 11-06-2009
Publisher: Springer International Publishing
Date: 2015
Publisher: Springer International Publishing
Date: 2015
Publisher: Cambridge University Press (CUP)
Date: 1996
DOI: 10.1017/S0373463300013084
Abstract: This paper presents the research for the development of a new travel aid to increase the independent mobility of blind and elderly travellers. This aid will build on the technologies of geographical information systems (GIS) and the Global Positioning System (GPS). The MOBIC Travel Aid (MOTA) consists of two interrelated components: the MOBIC Pre-journey System (MOPS) to assist users in planning journeys and the MOBIC Outdoor System (MOODS) to execute these plans by providing users with orientation and navigation assistance during journeys. The MOBIC travel aid is complementary to primary mobility aids such as the long cane or guide dog. Results of a study of user requirements are presented and their implications for the initial design of the system are discussed.
Publisher: ACM Press
Date: 1997
Publisher: Springer Berlin Heidelberg
Date: 2007
Publisher: Springer US
Date: 1997
Publisher: Springer Berlin Heidelberg
Date: 2009
Publisher: Association for Computing Machinery (ACM)
Date: 07-2001
Abstract: This study evaluates the Web Content Accessibility (WCA) guidelines, developed by the Web Accessibility Initiative (WAI). The first aim of this study was to investigate whether the Guidelines can be used effectively by Web page authors. To this end students of HTML (Hyper Text Mark-up Language) used the Guidelines to adapt Web pages. The second aim of the study was to examine whether pages developed using the Guidelines are accessible to visually impaired people. In order to achieve this visually impaired Web users assessed the accessibility of the pages developed by the Web page authors. The study found some difficulties in the use of the Guidelines that were similar to those identified by previous research. There were unexpected results regarding the accessbility of certain HTML elements.
Publisher: Springer London
Publisher: ACM
Date: 29-08-2023
Publisher: Springer International Publishing
Date: 2022
Publisher: Cambridge University Press (CUP)
Date: 2009
DOI: 10.1017/S030747220001587X
Abstract: This paper highlights the increasing numbers of students with disabilities in higher education. Results from international online surveys of such students, and the professionals who work with them, show that the provision of alternative format and enhanced materials is less than ideal. In particular the provision of tactile versions of images and graphics is very poor. Methods for producing such materials for blind and low-vision students are discussed.
Publisher: SAGE Publications
Date: 2000
DOI: 10.1177/026461960001800103
Abstract: The introduction of representational standards for tactile diagrams might improve their use. Two elements central to the design of visual diagrams are the relative positioning and movement of the objects yet no standard convention for representing either of these in tactile form has been established. Consequently, systems representing the movement and relative positioning of objects were developed with the Intention of producing design conventions for these elements. The method of depicting the element of movement was based on the concept that an object's movement is defined by changes between Its initial and final positions while the method of depicting relative positioning was based on a number of the principals underlying linear perspective, along with an additional texture-based cue. Tactile diagrams making use of these systems of representation were designed and produced for exploration by eight blind participants. They were confident and accurate in their Interpretations of diagrams that depicted relative positioning of objects and, on the basis of their comments on the diagrams depleting movement, a convention for the depletion of movement was proposed.
Publisher: Springer International Publishing
Date: 2022
Publisher: ACM Press
Date: 1995
Publisher: ACM
Date: 1998
Publisher: IGI Global
Date: 10-2009
Abstract: This chapter presents methodologies and techniques for performing accessibility evaluations on web applications. These methodologies are discussed in the context of performing them within a web engineering process, be it a traditional, unified or agile process. In this chapter the case is made that website commissioners and web engineers cannot afford to overlook accessible practices as they risk alienating an increasingly large user base who may require accessible web features.
Publisher: Springer Berlin Heidelberg
Date: 2008
Publisher: The International Community for Auditory Display
Date: 07-2016
Abstract: Music psychologists have frequently shown that music affects people’s behaviour. Applying this concept to work-related computing tasks has the potential to lead to improvements in a person’s productivity, efficiency and effectiveness. This paper presents two quantitative experiments exploring whether transcription typing performance is affected when hearing a music accompaniment that includes vocals. The first experiment showed that classifying the typists as either slow or fast ability is important as there were significant interaction effects once this between group factor was included, with the accuracy of fast typists reduced when the music contained vocals. In the second experiment, a Dutch transcription typing task was added to manipulate task difficulty and the volume of playback was included as a between groups independent variable. When typing in Dutch the fast typists’ speed was reduced with louder music. When typing in English the volume of music had little effect on typing speed for either the fast or slow typists. The fast typists achieved lower speeds when the loud volume music contained vocals, but with low volume music the inclusion of vocals in the background music did not have a noticeable affect on typing speed. The presence of vocals in the music reduced the accuracy of the text entry across the whole s le. Overall, these experiments show that the presence of vocals in background music reduces typing performance, but that we might be able to exploit instrumental music to improve performance in tasks involving typing with either low or high volume music.
Publisher: Association for Computing Machinery (ACM)
Date: 06-2003
Abstract: It is a widespread belief amongst web designers and implementers that sites that are accessible to users with disabilities must by necessity be uninteresting and simple, particularly visually uninteresting -- plain, vanilla sites. It is tempting to believe that such sites do not pose interesting challenges to web designers and implementers. However, it is our contention that this belief is profoundly misguided. Certainly, a very plain, visually simple site is quite likely to be accessible (although this is not guaranteed). However, the opposite is not necessarily the case -- sites can be visually interesting and sophisticated and still highly accessible. Visual and interesting web design is largely orthogonal to accessibility and these two factors should not be seen as being in opposition to each other. Accessibility should rather be viewed as another challenge to designers and implementers, along with creating a site that is usable, interesting and appealing to mainstream users.
Publisher: IEEE
Date: 07-2008
DOI: 10.1109/IV.2008.64
Publisher: Springer Berlin Heidelberg
Date: 2007
Publisher: ACM
Date: 02-11-2012
Publisher: Springer International Publishing
Date: 2022
Publisher: Springer International Publishing
Date: 2022
Publisher: Springer International Publishing
Date: 2022
Publisher: ACM
Date: 29-04-2007
Publisher: Springer International Publishing
Date: 2022
Publisher: IGI Global
Date: 2009
DOI: 10.4018/978-1-60566-054-7.CH163
Abstract: Mobile computing and wireless communications continue to change the way in which we perceive our lifestyles and habits. Through an extensive literature review of state-of-the-art human-computer interaction issues in mobile computing (Mobile HCI), we examine recent pertinent case studies that attempt to provide practical mobile capabilities to users. We thus contribute to the reader a primer to the philosophy of developing mobile systems for user centred design. User centred design elicits the needs and requirements of end users. Its purpose in mobile systems is to enable useful computing and communicating experiences for erse types of users, anywhere at anytime and on demand. We shall therefore illustrate to the reader some of the key constraints of mobile devices such as limited visuals, contextual awareness and mobility itself, and more importantly how they can be overcome through innovative design and development.
Publisher: ACM
Date: 24-04-2004
Publisher: ACM
Date: 19-04-2023
Publisher: Springer Berlin Heidelberg
Date: 2007
Publisher: ACM
Date: 04-04-2009
Publisher: Springer International Publishing
Date: 2021
Publisher: IGI Global
DOI: 10.4018/978-1-60960-523-0.CH018
Abstract: This chapter presents methodologies and techniques for performing accessibility evaluations on web applications. These methodologies are discussed in the context of performing them within a web engineering process, be it a traditional, unified or agile process. In this chapter the case is made that website commissioners and web engineers cannot afford to overlook accessible practices as they risk alienating an increasingly large user base who may require accessible web features.
Publisher: Springer International Publishing
Date: 2014
Publisher: Springer Berlin Heidelberg
Date: 2011
Publisher: IGI Global
Date: 2010
DOI: 10.4018/978-1-60566-896-3.CH007
Abstract: This chapter presents methodologies and techniques for performing accessibility evaluations on web applications. These methodologies are discussed in the context of performing them within a web engineering process, be it a traditional, unified or agile process. In this chapter the case is made that website commissioners and web engineers cannot afford to overlook accessible practices as they risk alienating an increasingly large user base who may require accessible web features.
Publisher: Informa UK Limited
Date: 09-01-2022
Publisher: Springer International Publishing
Date: 2016
Publisher: Springer International Publishing
Date: 2014
Publisher: Springer International Publishing
Date: 2014
Publisher: Springer Berlin Heidelberg
Date: 2010
Publisher: Walter de Gruyter GmbH
Date: 02-1997
Publisher: ACM
Date: 07-05-2016
Publisher: IEEE
Date: 03-2010
Publisher: Springer Science and Business Media LLC
Date: 05-2007
DOI: 10.3758/BF03193907
Abstract: Psychophysical functions for perceived roughness, relating ln (magnitude estimate of roughness) to ln (groove width), were obtained for blind and sighted participants in virtual reality using the PHANToM force feedback device. The stimuli were sinusoidal surfaces with groove widths between 0.675 mm and 20.700 mm. Group functions showed a similar nonlinearity to those obtained in physical reality using rigid probes (Klatzky, Lederman, Hamilton, Grindley, & Swendsen, 2003 Lederman, Klatzky, Hamilton, & Ramsay, 1999). In idual functions gave a different picture. Of 23 total participants, there were 13 with wholly descending linear psychometric functions, 7 with quadratic functions similar to the group function, and 3 with anomalous functions. In idual power law exponents showed no significant effects of visual status. All analyses gave a power law exponent close to -0.80. The implications for theories of roughness, methodologies of data analysis, and the design of haptic virtual reality interfaces are considered.
Publisher: Springer Berlin Heidelberg
Date: 2009
Publisher: Springer Berlin Heidelberg
Date: 2002
Publisher: Springer Berlin Heidelberg
Date: 2009
Publisher: Informa UK Limited
Date: 18-10-2021
Publisher: SAGE Publications
Date: 2006
Abstract: The TeDUB system is a new method for providing access to graphic information for blind people, using synthetic speech, sounds and forcefeedback information from a joystick. Currently certain types of visual diagram, such as architectural floorplans, can be automated by the TeDUB system and presented to the user. A variety of features to allow users to navigate through the diagram (Text View, Map View, Spatial Navigation View, Walkthrough) and explore the information have been developed. This article presents an overview of the TeDUB system, some of the work carried out in developing the user requirements for the system, and an evaluation with 34 blind participants of the floorplan prototype of the system.
Publisher: Springer Berlin Heidelberg
Date: 2001
Publisher: Elsevier BV
Date: 11-2013
Publisher: ACM
Date: 27-04-2013
Publisher: IEEE
Date: 08-2006
Publisher: Informa UK Limited
Date: 08-03-2017
Publisher: ACM
Date: 25-11-2013
Publisher: IGI Global
Date: 2005
DOI: 10.4018/978-1-59140-561-0.CH144
Abstract: Mobile computing and wireless communications continue to change the way in which we perceive our lifestyles and habits. Through an extensive literature review of state-of-the-art human-computer interaction issues in mobile computing (Mobile HCI), we examine recent pertinent case studies that attempt to provide practical mobile capabilities to users. We thus contribute to the reader a primer to the philosophy of developing mobile systems for user centred design.
Publisher: SPIE
Date: 14-03-2200
DOI: 10.1117/12.587129
Publisher: Springer Berlin Heidelberg
Date: 2011
Publisher: ACM
Date: 18-05-2015
Publisher: Association for Computing Machinery (ACM)
Date: 06-1996
Publisher: Springer Nature Switzerland
Date: 2023
Publisher: Springer Berlin Heidelberg
Date: 2002
Publisher: Springer International Publishing
Date: 2017
Publisher: SAGE Publications
Date: 09-1995
Abstract: This study examined 78 telephone conversations occurring naturally in the workplace between nine women recruitment consultants and female and male addressees, who were either high status (clients) or low status (employees). These conversations were analyzed for effects of status and gender of addressee on the participants'temporal conversational styles (number of interruptions and back-channel responses). The data show a significant interaction between status and gender on the number of attempted interruptions that the consultants made and show a highly significant effect for status on the number of the consultants' back-channel responses. Discussion highlights the importance for language and gender research of taking into account its situational context.
Publisher: Springer Berlin Heidelberg
Date: 1994
Publisher: IEEE
Date: 12-2011
DOI: 10.1109/ISM.2011.70
Publisher: ACM
Date: 23-10-2016
Publisher: ACM
Date: 30-11-2015
Publisher: ACM
Date: 02-12-2014
Publisher: Springer International Publishing
Date: 2017
Publisher: CRC Press
Date: 11-06-2009
Publisher: Springer International Publishing
Date: 2017
Publisher: Springer International Publishing
Date: 2017
Publisher: Springer Nature Switzerland
Date: 2023
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Helen Petrie.