@proceedings{9223,
title = {Touching Floating Objects in Projection-based Virtual Reality Environments},
author = {Dimitar Valkov and Frank Steinicke and Gerd Bruder and Klaus H Hinrichs and Johannes Sch ö and Florian Daiber and Antonio Krüger},
journal = {JVRC 2010: Joint Virtual Reality Conference},
abstract = {
Touch-sensitive screens enable natural interaction without any instrumentation and support tangible feedback on the touch surface. In particular multi-touch interaction has proven its usability for 2D tasks, but the challenges to exploit these technologies in virtual reality (VR) setups have rarely been studied. In this paper we address the challenge to allow users to interact with stereoscopically displayed virtual environments when the input is constrained to a 2D touch surface. During interaction with a large-scale touch display a user changes between three different states: (1) beyond the arm-reach distance from the surface, (2) at arm-reach distance and (3) interaction. We have analyzed the usertextquoterights ability to discriminate stereoscopic display parallaxes while she moves through these states, i. e., if objects can be imperceptibly shifted onto the interactive surface and become accessible for natural touch interaction. Our results show that the detection thresholds for such manipulations are related to both user motion and stereoscopic parallax, and that users have problems to discriminate whether they touched an object or not, when tangible feedback is expected.
<p class="rtejustify"><span style="font-size:12px">Touch-sensitive screens enable natural interaction without any instrumentation and support tangible feedback on the touch surface. In particular multi-touch interaction has proven its usability for 2D tasks, but the challenges to exploit these technologies in virtual reality (VR) setups have rarely been studied. In this paper we address the challenge to allow users to interact with stereoscopically displayed virtual environments when the input is constrained to a 2D touch surface. During interaction with a large-scale touch display a user changes between three different states: (1) beyond the arm-reach distance from the surface, (2) at arm-reach distance and (3) interaction. We have analyzed the usertextquoterights ability to discriminate stereoscopic display parallaxes while she moves through these states, i. e., if objects can be imperceptibly shifted onto the interactive surface and become accessible for natural touch interaction. Our results show that the detection thresholds for such manipulations are related to both user motion and stereoscopic parallax, and that users have problems to discriminate whether they touched an object or not, when tangible feedback is expected.</span></p>
@proceedings{8935,
title = {User- Centred Healthcare Design},
author = {Joana Duarte and Antonio Lopes},
editor = {Leontios Hadjileontiadis and Robert Todd and Hugo Paredes and Jo ~a and Jo ~a},
url = {http://www.sciencedirect.com/science/journal/18770509/14},
journal = {4th International Conference on Software Development for Enhancing Accessibility and Fighting Infoexclusion (DSAI 2012)},
volume = {14},
pages = {189-197},
publisher = {Elsevier},
address = {Douro Region, Portugal},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
@conference{9224,
title = {Using the Service Ecosystem Perspective to Design Services for Sustainability},
author = {Lia Patr{'i}cio and R P Fisk and Nuno Nunes and John Zimmerman},
booktitle = {Frontiers in Service Conference},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
@proceedings{8445,
title = {m-health: Avaliac c~ao de intervenc c~oes breves para a prevenc c~ao do cancro do colo do 'utero em estudantes universitários},
author = {F Oliveira and L Soares and M S Lemos},
journal = {Desafios da Psicologia da Sa'ude num mundo em mudanc ca},
publisher = {11textordmasculine Congresso Nacional de Psicologia da Sa'ude, ISCTE-IUL},
address = {Lisboa},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
@conference{8786b,
title = {Look what I found! Augmenting Phone Calls with Memories of the Past},
author = { E Gouveia and F Azevedo and L Ferreira and P Caldeira and V Almeida and R{'u}ben Gouveia and Evangelos Karapanos},
booktitle = {CHI 2013, [Acceptance Rate: 32%]},
address = {Paris, France},
abstract = {
Photos have an enormous capacity in cueing memories of our past and supporting collective reminiscing. Yet, despite the considerable increase in our ability to efficiently capture photos, our digital photo collections remain to a large extent invisible to our everyday interactions with the physical world. We present the design of “Look what I found!”, a mobile application that aims at supporting collective reminiscing through making photos present in our daily phone calls. We then report the field trial of “Look what I found!” that discovered unexpected and often inventive ways in which users appropriate the application in their daily lives
<p>Photos have an enormous capacity in cueing memories of our past and supporting collective reminiscing. Yet, despite the considerable increase in our ability to efficiently capture photos, our digital photo collections remain to a large extent invisible to our everyday interactions with the physical world. We present the design of “Look what I found!”, a mobile application that aims at supporting collective reminiscing through making photos present in our daily phone calls. We then report the field trial of “Look what I found!” that discovered unexpected and often inventive ways in which users appropriate the application in their daily lives</p>
@conference{10287,
title = {Motivation, Participation, and Engagement in Human Work Interaction Design Literature},
author = {B R Barricelli and Torkil Clemmensen and Pedro Campos and J Nocera and Antonio Lopes},
booktitle = {NordiCHI 2016},
publisher = {ACM},
organization = {ACM},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
@conference{9326,
title = {Adapting the Unisyn Lexicon to Portuguese: Preliminary Issues in the Development of LUPo},
author = {Simone Ashby and J P Ferreira and S Barbosa},
url = {http://www.isca-speech.org/archive_open/sltech_2009/},
booktitle = {Iberian SL Tech},
address = {Porto Salvo, Portugal},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
@inbook{10264b,
title = {Development and Assessment of a Self-paced BCI-VR Paradigm using Multimodal Stimulation and Adaptive Performance},
author = { Athanasios Vourvopoulos and André Ferreira and Sergi Bermudez I Badia},
booktitle = {LNCS},
series = {Lecture Notes in Computer Science},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
@conference{10296b,
title = {Shrinking towards the people: tailoring electronic dommincation media solutions to community needs},
author = { Chris Csikszentmihályi and Jude Mukundane},
booktitle = {5th International Conference on M4D},
address = {Maputo, Mozambique},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
@conference{8786,
title = {Look what I found! Augmenting Phone Calls with Memories of the Past},
author = {E Gouveia and F Azevedo and L Ferreira and P Caldeira and V Almeida and R{'u}ben Gouveia and Evangelos Karapanos},
booktitle = {CHI 2013, [Acceptance Rate: 32%]},
address = {Paris, France},
abstract = {
Photos have an enormous capacity in cueing memories of our past and supporting collective reminiscing. Yet, despite the considerable increase in our ability to efficiently capture photos, our digital photo collections remain to a large extent invisible to our everyday interactions with the physical world. We present the design of “Look what I found!”, a mobile application that aims at supporting collective reminiscing through making photos present in our daily phone calls. We then report the field trial of “Look what I found!” that discovered unexpected and often inventive ways in which users appropriate the application in their daily lives
<p>Photos have an enormous capacity in cueing memories of our past and supporting collective reminiscing. Yet, despite the considerable increase in our ability to efficiently capture photos, our digital photo collections remain to a large extent invisible to our everyday interactions with the physical world. We present the design of “Look what I found!”, a mobile application that aims at supporting collective reminiscing through making photos present in our daily phone calls. We then report the field trial of “Look what I found!” that discovered unexpected and often inventive ways in which users appropriate the application in their daily lives</p>
@proceedings{8787b,
title = {Physical Games or Digital Games? Comparing Support for Mental Projection in Tangible and Virtual Representations of a Problem-Solving Task},
author = { Augusto Esteves and Elise van den Hoven and Ian Oakley},
journal = {TEI 2013 - Seventh International Conference on Tangible, Embedded and Embodied Interaction, [Acceptance Rate: 35%]},
pages = {167-174},
address = {Barcelona, Spain},
abstract = {
This paper explores how different interfaces to a problemsolving task affect how users perform it. Specifically, it focuses on a customized version of the game of Four-in-arow and compares play on a physical, tangible game board with that conducted in mouse and touch-screen driven virtual versions. This is achieved through a repeated measures study involving a total of 36 participants and which explicitly assesses aspects of cognitive work through measures of time task, subjective workload, the projection of mental constructs onto external structures and the occurrence of explanatory epistemic actions. The results highlight the relevance of projection and epistemic action to this problem-solving task and suggest that the different interface forms afford instantiation of these activities in different ways. The tangible version of the system supports the most rapid execution of these actions and future work on this topic should explore the unique advantages of tangible interfaces in supporting epistemic actions
<p>This paper explores how different interfaces to a problemsolving task affect how users perform it. Specifically, it focuses on a customized version of the game of Four-in-arow and compares play on a physical, tangible game board with that conducted in mouse and touch-screen driven virtual versions. This is achieved through a repeated measures study involving a total of 36 participants and which explicitly assesses aspects of cognitive work through measures of time task, subjective workload, the projection of mental constructs onto external structures and the occurrence of explanatory epistemic actions. The results highlight the relevance of projection and epistemic action to this problem-solving task and suggest that the different interface forms afford instantiation of these activities in different ways. The tangible version of the system supports the most rapid execution of these actions and future work on this topic should explore the unique advantages of tangible interfaces in supporting epistemic actions</p>
