Keynote Speakers


Jonathan Lazar

Doctor in computer science, director of the Information Systems´ Post Graduate Program at Towson University – USA. He is the author of seven books in the Human-Computer Interaction area and has been published regularly in the most important journals in the area.




Title: Improving Interface Design for People with Down Syndrome

Abstract: There is a tradition of at least 30 years of HCI research relating to people with perceptual or motor impairments, such as users who are Blind or Deaf. However, there is much less HCI research involving people with cognitive or intellectual impairments. Since 2006, Jonathan Lazar and his collaborators have been researching computer usage by people with Down syndrome. Down syndrome actually affects multiple channels of cognitive, fine motor, and visual and hearing skills. For example, low muscle tone and weak muscles are often a problem in the arms and fingers, which could impact on keyboarding skills. Auditory memory and sequential recall are also difficult areas for people with Down syndrome. People with Down syndrome have strong visual memory and visual learning skills. This presentation will provide an overview of the existing research on computer usage by people with Down syndrome, including both children and adults. The presentation will highlight the research involving multiple research methods (survey, observation, usability testing, and experimental design), and multiple topics (web-based security features, input devices, and multi-touch tablet computers). The presentation will also summarize how this body of research impacts on both interface guidelines for accessibility and public policy for education and employment, and will provide information on how to modify research methods for effective use in studies which involve participants with Down syndrome.





Maria Cecilia Calani Baranauskas


Maria Cecilia Calani Baranauskas

Professor and Doctor at the Unicamp (Campinas State University). She has experience in the Computer Sciences area with emphasis on Computing Methods and Techniques, working mainly on the following themes: HCI, organizational semiotics, user interface, interactive computer design in an array of dominions (social, educational, and work related).


Title: User, stakeholder, coauthor: toward a socially aware design

AbstractThe [computing] technology has become ubiquitous in our lives and culture transforming our ways of understanding and living [in] the world. This presence has led to changes in our relations with technology, with others and with the process of building knowledge. There is no neutrality in our relationship with technology: we suffer the impact of technology and, at the same time, we are responsible for the form it takes and the effects it causes.

Historically, approaches to the HCI discipline have followed the ways of understanding the technology in our setting. In this talk, I want to provoke a reflection on changes in perspectives in order to include interpretative, social and communicative aspects in the design of systems constituted from contemporary computer technology. Assuming a subjectivist posture and recognizing the situational character of design, I present the semioparticipatory design model, its epistemological foundations and forms that it has been experienced in some projects in a socially aware perspective.





Carl Gutwin

Dr. Carl Gutwin is a professor in the Department of Computer Science and the director of the HCI laboratory at Saskatchewan University – CA. His main research areas are computer-supported cooperative work, interaction techniques, and surface computing.



Title: Embodiments Real and Virtual: Attempting (and Sometimes Succeeding) to Support Interactional Expertise in Groupware

Abstract: A main goal of groupware research is to provide an experience that is "just like being there". For shared-workspace groupware, this means that we are trying to achieve the experience of working together in a physical shared space (for example, working around a table). Designers and researchers have made many advances towards making it *possible* to collaborate in groupware, but have we really made much progress towards the natural and effortless awareness and coordination that is clearly evident in face-to-face work? In this presentation I will discuss some of the differences between physical face-to-face collaboration and groupware-mediated collaboration, particularly relating to how people use their bodies in the shared space, and present some ideas about what I think "natural" and "expert" group interaction actually means. Then, I will look at the difficulties that groupware designers face in attempting to support natural and expert interaction through groupware. I will present some of our results from several years of experience in building and evaluating groupware systems, focusing on how different kinds of embodiments, both real and virtual, in both co-present and distributed settings, affect the ways that people coordinate and structure shared work. I will try to provide both a set of findings and lessons about groupware design and evaluation, and also a research agenda for a new generation of groupware systems.