Usability of an adaptive computer assistant that improves self-care and health literacy of older adults

Objectives: We developed an adaptive computer assistant for the supervision of diabetics' self-care, to support limiting illness and need for acute treatment, and improve health literacy. This assistant monitors self-care activities logged in the patient's electronic diary. Accordingly, it provides context-aware feedback. The objective was to...

Crucial elements of designing for comfort

Usability engineering for mobile maps

because interaction with these maps can be laborious the applications are often hard to use. Therefore, the usability of maps on mobile devices must be improved. In this paper we review the research that has been done to solve technical, environmental, and social challenges of mobile map use. We will discuss interaction, visualization, and...

Evaluating spoken dialogue systems according to de-facto standards: A case study

In the present paper, we investigate the validity and reliability of de-facto evaluation standards, defined for measuring or predicting the quality of the interaction with spoken dialogue systems. Two experiments have been carried out with a dialogue system for controlling domestic devices. During these experiments, subjective judgments of...

Mobile DRM - Usability out the door?

One current trend is that content such as e-books, music, videos and now also games and applications are increasingly being distributed across the Internet, and more and more of it is protected by a Digital Rights Management system. Another trend is that this content is consumed using an increasing number and variety of devices, some of which...

Usage analysis: Combining logging and qualitative methods

Usability trade-offs for adaptive user interfaces: Ease of use and learnability

An analysis of context-aware user interfaces shows that adaptation mechanisms have a cost-benefit trade-off for usability. Unpredictable autonomous interface adaptations can easily reduce a system's usability. To reduce this negative effect of adaptive behaviour, we have attempted to help users building adequate mental models of such systems. A...

User walkthrough of multimodal access to multidimensional databases

This paper describes a user walkthrough that was conducted with an experimental multimodal dialogue system to access a multidimensional music database using a simulated mobile device (including a technically challenging four-PHANToM-setup). The main objectives of the user walkthrough were to assess user preferences for certain modalities (speech...

Gebruiksgericht ontwerpen van Elektronische Patiënten Dossiers

Binnen het project ‘Gebruiksvriendelijkheid van Elektronische Patiënten Dossiers’ wordt met behulp van enkele voorbeelden een vereenvoudigde, algemene ontwerpaanpak beschreven voor het bereiken van gebruiksgemak en toegankelijkheid van informatie voor verschillende gebruikersgroepen binnen het EPD. Er zijn een aantal hoofdlijnen van voorwaarden...

Interacting in desktop and mobile context: Emotion, trust and task performance

The Personal Assistant for onLine Services (PALS) project aims at attuning the interaction with mobile services to the momentary usage context. Among other thing, PALS should adequately address emotional states of the user and support users building up an adequate trust level during service interactions. In an experiment, participants performed...

Deriving the optimal modality combination for mobile search in multimedia databases

The European MIAMM-project (Multidimensional Information Access using Multiple Modalities) develops new concepts and techniques for multimodal dialogs that allow for fast and natural mobile access to multimedia databases. In an experiment we investigated different modality combinations (haptic-tactile, non-speech audio and a redundant...

Contribution of the phosphoenolpyruvate: Mannose phosphotransferase system to carbon catabolite repression in Lactobacillus pentosus

A generic usability test environment for webbased services

The success of web-based services depends critically on the users' satisfaction and on the effectiveness and efficiency of their computer use. The development of a tool that supports systematic user tests with end-users interacting with (a prototype of) a future interface of a web-based service will be discussed. The full scope of relevant user...

Machinery design for professional usability and standards

World class design forces designers to consider the human that will be professionally involved with a machine. For this, the EU Machinery Directive [1989] contains health and safety requirements in general terms. All machines traded within the European Union are subject to the Directive. Various EN standards (European Norms) supporting the...