<!–Speaker: John Brosz, University of Calgary
Date/Time: 1-2pm May 27th, 2011
Location: 1.33a Jack Cole, University of St Andrews (directions)–>
Abstract:
Generally, interactive computer graphics are limited to a small subset of possible projections known as linear projections. To address this limitation we have created the flexible projection framework; a framework designed to model a wide variety of linear, nonlinear, and hand-tailored artistic projections in a way that is supported by computer graphics hardware. This framework introduces a unified geometry for all of these types of projections using a parametric viewing volume. Through this parametric representation we obtain the ability to create projections that make use of curved projection surfaces and curved projectors. Several applications will be discussed including panoramas, re-creating projections used by artists, and dynamic projections that change over time.
About John:
John Brosz is a Post-Doctoral researcher at the University of Calgary Interactions Lab. His current research examines new techniques for controlling the display of information as well as 3D models and environments. John received his PhD in computer graphics at the University of Calgary and his past research has addressed computer graphics, non-photorealistic rendering, and 3D modelling.

<!–Speaker: Neil Hurley, University College Dublin, Ireland
Date/Time: 1-2pm May 16h, 2011
Location: 1.33a Jack Cole, University of St Andrews (directions)–>
Note: This seminar is organised by both SACHI and the Systems Group
 
Abstract:
The Clique research group in University College Dublin is focused on the analysis and visualisation of social networks. Computer scientists and computational statisticians are working together on problems including community-finding in social networks, influence propagation and detection of anomalous structure in networks. Research is driven by the analysis of large-scale networks provided by industrial partners, in particular, networks of mobile phone-calls containing more than a million nodes and tens of millions of links. In this talk, I will focus primarily on the community-finding problem, discussing initially the structure of real-world networks and on how this impacts on the communities that likely to be found in such networks. I will argue that the view of social networks as consisting of well-separated communities connected by weak links does not hold in many real-world networks and I will introduce algorithms that we have developed to detect overlapping community structure in networks with pervasive overlapping community structure.
About Neil:

Neil J. Hurley received an M.Sc. in mathematical science from University College Dublin (UCD), Dublin, Ireland, in 1988. In 1989, he joined Hitachi Dublin Laboratory, a computer science research laboratory at the University of Dublin, Trinity College,from which he received the Ph.D. degree in 1995, for his work in knowledge-based engineering and high-performance computing. He joined the academic staff of UCD in 1999 where his present research activities lie in the areas of large-scale network analysis, robust information retrieval and data-hiding.

<!–Speaker: Paddy Nixon, University of Tasmania, Australia
Date/Time: 1-2pm May 3rd, 2011
Location: 1.33a Jack Cole, University of St Andrews (directions)–>
Note: This seminar is organised by both SACHI and the Systems Group
Abstract:
Human-computer interaction (HCI) is being exploited in many application domains to carry out tasks that were previously thought impossible or life-threatening, e.g., remote operation of mining equipment, robot- assisted search and rescue operations, and military operations. Regardless of the sophistication of the technology, these systems are operated with varying levels of intervention and control by humans, so successful HRI requires solving both human factors challenges such as maintaining situation awareness, managing cognitive load and establishing trust and computational challenges such as executable models of situation awareness and intention recognition. This project is concerned only with the computational perspective and specifically with understanding how autonomous a system can be and still remain resilient to failure.

As some of you probably know, we are a member of SICSA – The Scottish Informatics & Computer Science Alliance. SICSA will host a SICSA Networking Event at CHI 2011 in Vancouver, Canada.
SACHI faculty member Per Ola Kristensson will attend it in conjunction to attending the main program and a workshop on ‘App Store’ Ethics: Large Scale Trials & User Generated Content.

<!–Speaker: Umer Rashid, SACHI, University of St Andrews
Date/Time: 1-2pm April 26th, 2011
Location: 1.33a Jack Cole, University of St Andrews (directions)–>
Abstract:

While the portability of mobile devices makes them desirable for pervasive access to information, their small screen real estate and the lack of peripheral input devices often impose restriction on the amount of information to be displayed and manipulated on them. This talk provides an overview of our work that explores the ways the mobile screens can be used with large external displays to complement the inherent limitations of each device and create an enhanced user experience. This work is particularly focused on the analysis of visual attention switch and its impact on user performance for designing an interaction space distributed across heterogeneous display devices.
About Umer:
Umer Rashid is a PhD student in School of Computer Science, University of St. Andrews. He received his BS in computer systems engineering from GIK Institute, Pakistan and MS in Information & Communications from Gwangju Institute of Science & Technology, South Korea. His research interests include software engineering and human-computer-interaction in context-aware pervasive computing environments.

<!–Speaker: Per Ola Kristensson, SACHI, University of St Andrews
Date/Time: 1-2pm April 12th, 2011
Location: 1.33a Jack Cole, University of St Andrews (directions)–>
Abstract:

Text entry methods are designed with attention to two objective functions above anything else: high entry rates and a low error rates. However, similar to most other user interfaces, it is likely that users’ satisfaction in using them and ability to use them effectively is the result of many more design traits. This point becomes particularly important to consider when we observe that, despite literally hundreds of mobile text entry methods being proposed in the literature, extremely few of these have gained wider user adoption. To understand why this is, we propose a framework for designing and analyzing mobile text entry methods. Using this framework we analyze the traits of mainstream text entry methods and find that two traits stand out: familiarity and a high effective entry rate. While familiarity is important to consider, too much emphasis on it may risk trapping us forever in a local optimum with multiple similarly performing text entry methods (the so-called path dependency phenomenon). Therefore it is also important to consider the high effective rate. However, what is a sufficiently high entry rate? We propose limiting the search for ever higher entry rates by targeting the inviscid entry rate: the entry rate in which users’ creativity rather than the text entry method is the bottle-neck for efficient text entry. Via a crowdsourcing experiment we have estimated the population mean of the inviscid entry rate to about 50 wpm. When mobile text entry methods have reached this point it may be more worthwhile to consider alternative design dimensions that are currently neglected, such as robustness, comfort and user engagement.
About Per Ola:
Per Ola Kristensson is a Lecturer in Human Computer Interaction at the University of St Andrews. Previously he was a Junior Research Fellow at the University of Cambridge.

<!–Speaker: Chris Speed, Edinburgh School of Architecture and Landscape Architecture
Date/Time: 1-2pm March 29th, 2011
Location: 1.33a Jack Cole, University of St Andrews (directions)–>
Abstract:
The term ‘internet of things’ refers to the technical and cultural shift that is anticipated as society moves to a ubiquitous form of computing in which every device is ‘on’, and every device is connected in some way to the internet. However, many versions of the ‘internet of things’ rely upon one premise: that the thing remains in existence. This paper forecasts a near future when digital memories that have been associated with artefacts remain as the only reference to that thing, because that thing has been lost or disposed of. Remaining as entries in databases whilst its material instantiation has been crushed, burnt or tipped into a landfill, the immaterial artefact has the potential to live on within the networks society. Alive and well in the cloud, these ghosts will haunt their makers, distributors, vendors and owners forever, remaining as searchable artefacts that can be correlated against any other data from the past, present or future.
In this seminar Chris Speed will reflect upon recent research / art projects that evoke a sense of time and exhume personal memories of the past.
About Chris:
Dr. Chris Speed is Reader in Digital Spaces at the Edinburgh School of Architecture and Landscape Architecture where he teaches undergraduate, masters and supervises PhD students.

Chris has sustained a critical enquiry into how digital technology can engage with the field of architecture and human geography through a variety of established international digital art contexts including: International Symposium on Electronic Art, Biennial of Electronic Arts Perth, Ars Electronica, Consciousness Reframed, Sonic Acts, LoveBytes, We Love Technology, Sonic Arts Festival, MELT, Less Remote, FutureSonic, and the Arts Catalyst / Leonardo symposium held alongside The International Astronautical Congress.
Chris is currently working with collaborative GPS technologies and the streaming of social and environmental data. He is the lead academic on a GPS tool for historical maps iPhone application: Walking Through Time, is the leader of a large UK academic team investigating social memory within the ‘Internet of Things’ funded by the UK Research Councils and is the co-developer for the locative media application Comob Net available for download in the Apple iPhone App Store developed in conjunction with Jen Southern (independent artist) and colleagues from ECA and Uni Edinburgh.