At the core of the vision of User Interfaces for All is a mix of existing and emerging technologies, which are likely to predominate the life cycle of future user interfaces to a wide range of applications and telematic services; these interfaces must be both accessible and provide high quality interaction to potentially all users, so as to be usable by a diverse user population, including people with different cultural, educational, training and employment background, novice and experienced computer users, the very young and the elderly, and people with different types of disabilities, in various interaction contexts and scenarios of use.
“Hans-Heinrich Bothe is experimenting in the "Assistive Technologies -- Multimedia -- Robotics" triangle with generic speech recognition/processing algorithms controlling lip-movements of an artificial robotic head or a GUI-based virtual human face. These user interfaces are meant to enable the hard of hearing and more so the deaf to interact/communicate with able-bodied people under asynchronous and/or spatially decentralized conditions by lipreading. Such an application environment has obvious Dual Use/Design for All implications within a comprehensive UI4All framework, which -- beyond Assistive Technologies -- reaches out to speech-controlled robotics as well.”
“The accessibility of interactive computer-based products and services has long been an issue of concern to both the Assistive Technology and HCI communities. Though progress has been slow, there have been several efforts aiming to document the consolidated wisdom in the form of general guidelines and examples of best practice. Despite their sound human factors content, these guidelines require substantial interpretation by designers before they can generate practically useful and context-specific recommendations. In this paper, we examine how different engineering perspectives in the implementation of guidelines may influence the quality of the final products.”
“The paper presents a conceptual approach that helps non-expert users to find legislative documents from textual databases. The concepts and inter-concept relationships of each legal domain involved are modeled by an ontology. Terms describing a concept at different levels of accuracy are attached to the concept, and a weight expressing the level of accuracy is associated with each of them. Initial queries presented by the user are matched against these terms. Thereafter the user is shown a graphical representation of the relevant subpart of the ontology that he can use for refining the query. The conceptual approach is preferred over traditional thesaurus because legal terms depend on the differences in law systems that can be expressed by ontologies.”
“Applied user testing involves more usability evaluation methods than laboratory tests and is critically dependent upon a number of issues seldom treated in the literature. The development of the system described in this longitudinal, diary-based study evolved around five user tests: a laboratory test, a workshop test, and three field tests. The user tests had a substantial impact on the focus of the entire development effort in that 25% of the primary developer's time was spent solving problems encountered during the tests. The laboratory test made use of set tasks and was biased toward how tasks were performed with the system, at the expense of what tasks could be performed. The workshop test was more informal and apparently led the users to adopt a more exploratory attitude. Careful arousal and management of the users' commitment to participate actively proved essential to effective user testing, especially during the field tests.”
“It is well established within interface development that user requirements are conventionally identified and documented prior to design and implementation. With the growing uptake of information technology the development process also needs to manage the re-engineering of legacy systems. Re-engineering not only provides an opportunity to enhance user interface quality, but also to broaden the user base. This paper reports on the techniques developed in the re-engineering of two distinct legacy systems with the aim of identifying and meeting common user requirements for both. More generally, it is proposed that these techniques should benefit user-centred design in the context of widening user bases.”
“The paper presents on-going research towards generic tools and methods for fulfilling the combined needs of information producers and consumers. It presents the principles, framework and key issues of our research, and focuses on developments concerning INFO-PRESENTER. This is an interactive system that provides knowledge-based and layout-driven information presentations, intending to satisfy the idiosyncrasies of information consumers, supporting a great amount of tailoring information to their needs, interests, preferences and background knowledge. The paper focuses mostly on themes concerning knowledge representation and layout specifications. The representation framework provides a general model for the specification of information requirements in terms of media-independent information item categories and types of information views for realising information. Layout specifications provide generic rules for tailoring information delivery, in conjunction with the information specifications. To facilitate user-tailored information production, information and layout specifications should be structured and encoded so as to facilitate their cost-effective creation and maintenance, in relation to their effective utilization for user-tailored information presentations.”
“Very Large Web Sites are a particular category of web sites where the potential of traditional evaluation process for ensuring usability is significantly contracted by the size of the web site. Since this kind of web site is authored, designed, evaluated, and maintained by a wide variety of people who have specific information demands over a huge set of web pages, we believe that Universal Design principles should be integrated into the current approach for managing such web sites. We propose to support Universal Design principles by integrating related guidelines into a global approach for managing Very Large Web Sites. This approach is supported by Extended Bobby, an extension of the Bobby tool that provides (i) evaluation on demand; (ii) a repair tool that proposes to authors of web pages new HTML code fixing usability problems that Extended Bobby itself has merely identified and explained; (iii) a usability site tracker that keeps track of usability problems of the web sites, automatically sends e-mails to authors with the repair proposal, and helps site managers and webmasters to manage the pages evolving in time.”
“Hippie [1] is an internet-based guide offering added value to current information facilities by sup-porting the multiplicity of activities during the preparation, the execution and the evaluation of a museum/fair visit'. The process orientation is made possible by the nomadic characteristic [2] of the system that allows the user to have access to his or her personal information space from all places independently from specific devices. The context takes into account the current location and direction of the user, his personal characteristics like knowledge and interests and the environmental conditions like physical arrangements and technical tools. Before a visit a user can browse all exhibits, prepare tours, and mark individual hotspots. The information selected and presented is adapted to the interests, the knowledge and the presentation preferences of the user [3]. During the actual visit augmented reality components for artwork interpretation and mainly audio output complement the visual modality preoccupied by the physical environment. Furthermore position tracking and location systems in the exhibition place allow for the adaptation of hippie to the current visitor position (at home or in front of a certain exhibit). The system automatically identifies the relevant objects close to the visitor and multi-modal in-formation presentation takes into account the specific environmental constraints for information perception in the physical context. Two main elements for the process orientation of the system, the internet-based personal information space and the learning capability of the system of the evolving knowledge and interest of the visitor, are described below in some more detail.”
“One of the critical issues in the development of adaptable and adaptive user interfaces concerns the lack of appropriate evaluation methods and techniques. Existing approaches cannot be used to assess the way and extent to which the adaptation facilities of the interface affect interaction qualities such as accessibility and usability. This paper reports on the particular approach taken within the development of the AVANTI Web browser for the assessment of the adaptation characteristics of the user interface. Based on the practical experience gained, a number of requirements have emerged towards the development of generic methods and techniques for evaluating adaptation-capable user interfaces.”
“The aim of this paper is to propose the expression of the CARE (Complementarity, Assignment, Redundancy, Equivalence) properties for non visual multimodal presentation of electronic documents within the extended Cascading Style Sheet (CSS) formalism. Firstly the CARE properties and the CSS formalism are briefly described. Then, we present two synchronization and logical operators in order to convey the Complementarity and the Assignment properties of CARE. Some illustrations are given.”
“Within the project CATI (Computer-Aided Therapeutic Intervention) new potentials and limitations of computer-supported multimedia applications for the therapeutic advancement of severely handicapped children are investigated. In this context, we are conducting a case study involving a 12-year old physically handicapped child with behaviour typical of autism. A memory game featuring various individualised semantic adaptations was developed for the training of metacognitive skills. The design of the training adopts procedures used for cognitive behaviour modification. A significant other defined as a person with high social and rewarding power is used for instructional purposes in the computer-assisted learning environment. It is to investigate how the readiness to attend and the achievement motivation can be enhanced by the implementation of such a person. First results show that the motivation to stay on task is developing and the goal of achieving problem solving techniques appears to be attainable.”
“For the acceptance of future network-based media services the technical advancement of the man-machine interface is of great importance. The Fraunhofer Institute for Systems and Innovation Research (ISI) in Karlsruhe has conducted an expert survey on different acceptance factors, on the future development of media usage behavior, on network infrastructure and terminal devices as well as on the expected market development. Drawing on the results we point out perspectives in the light of today's user needs and the technical possibilities.”
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Mar 16th, 2010
