Article history: Received 3 December 2013 Received in revised form 14 January 2014 Accepted 14 January 2014 Available online 6 February 2014

This paper presents work conducted towards the automatic recognition of negative emotions like boredom and frustration, induced due to the subject’s loss of interest during HCI. Focus was on the basic pre-requisite for the future development of systems utilizing an “affective loop”, namely effective recognition of the human affective state. Based on the concept of “repetition that causes loss o...

The evaluation of a program’s behavior in the presence of transient faults is often a very time consuming work. In order to achieve significant data, thousands of executions are normally required and each execution will have the significant overhead of the fault injection environment. Our previously published methodology reduced significantly the time needed to evaluate the robustness of a prog...

In the current work, we introduce Applab as a pedagogical framework and a transdisciplinary design approach to innovate HCI education. Students do not work for a client, but work together with urban stakeholders to better frame the problem in order to deal with societal challenges. In this way, Applab embraces design thinking as an approach to leverage a crossdisciplinary collaboration between ...

When adversity strikes, when mental and physical functioning and health are at risk, humans ‘fight back’. Humans come with and develop a set of adaptive processes that gives them the potential to fend off disaster, to reshape challenges and to transform stressful experiences into psychological growth. Coping describes some of these adaptive processes (Coelho et al., 1974; White, 1974). Research...

Analyser injection systems based on the principle of flow-injection analysis depend on the technique used. They generally take the form of an injection loop valve; the injected sample volume is determined by the volume of the valve. Injection systems are seldom designed with a time factor to define this volume. The authors report on an original injection system, which enables the two techniques...

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We revisit the dividend payment problem in the dual model of Avanzi et al. ([2–4]). Using the !uctuation theory of spectrally positive Lévy processes, we give a short exposition in which we show the optimality of barrier strategies for all such Lévy processes. Moreover, we characterize the optimal barrier using the functional inverse of a scale function. We also consider the capital injection p...