We depend on database-driven web applications for an ever increasing amount of activities, such as banking and shopping. When performing such activities, we entrust our personal information to these web applications and their underlying databases. The confidentiality and integrity of this information is far from guaranteed; web applications are often vulnerable to attacks, which can give an att...

Live music-making using interactive systems is not completely amenable to traditional HCI evaluation metrics such as taskcompletion rates. In this paper we discuss quantitative and qualitative approaches which provide opportunities to evaluate the music-making interaction, accounting for aspects which cannot be directly measured or expressed numerically, yet which may be important for participa...

This paper observes that task analysis, despite its prominence in many HCI approaches, embodies a limited perspective on change sources and manifestations. The paper starts with a critique of the change management perspective of TA methods and illustrates the argument with two examples — Interacting Cognitive Subsystems, and Task Knowledge Structures. Following this, we examine some broader cha...

Among persistent issues in HCI are its separation from the other disciplines involved in the construction of Information Systems, any coherently extensive methodology and straight forward techniques for clustering interface elements for best effect. An approach to HCI which encompasses the full context of use (rather than just of usage) and entails more traditional SA&D within a single framewor...

The Pseudo Fisher Linear Discriminant (PFLD) based on a pseudo-inverse technique shows a peaking behaviour of the generalization error for training sample sizes that are about the feature size: with an increase in the training sample size the generalization error at first decreases reaching the minimum, then increases reaching the maximum at the point where the training sample size is equal to ...

Testability analysis of VHDL sequential models is the main topic of this paper. We investigate the possibility to obtain information about the testability of a sequential VHDL description before its actual synthesis. The analysis is based on an implicit fault model that injects faults into a BDD based description extracted from the VHDL representation. Such an injection is related to the origin...

This article considers the use of magnetic pulses to inject transient faults into the calculations of a RISC micro-controller running the AES algorithm. A magnetic coil is used to generate the pulses. It induces computational faults without any physical contact with the device. The injected faults are proved to be constant (i.e. data independent) under certain experimental conditions. This beha...

In 2005, we automated a forklift-based Hot Metal Carrier to be capable of typical metal transfer operations around a smelter. The project was highly successful and the vehicle has demonstrated hundreds of hours of live autonomous operations to thousands of people from industry and the public. As a result of the exposure and success of the project, we have expanded its focus to demonstrate how v...