Tangible user interfaces : past, present and future directions

In the last two decades, Tangible User Interfaces (TUIs) have emerged as a new interface type that interlinks the digital and physical worlds. Drawing upon users' knowledge and skills of interaction with the real non-digital world, TUIs show a potential to enhance the way in which people interact with and leverage digital information. However, TUI research is still in its infancy and extensive research is required in or- der to fully understand the implications of tangible user interfaces, to develop technologies that further bridge the digital and the physical, and to guide TUI design with empirical knowledge. This paper examines the existing body of work on Tangible User In- terfaces. We start by sketching the history of tangible user interfaces, examining the intellectual origins of this field. We then present TUIs in a broader context, survey application domains, and review frame- works and taxonomies. We also discuss conceptual foundations of TUIs including perspectives from cognitive sciences, phycology, and philoso- phy. Methods and technologies for designing, building, and evaluating TUIs are also addressed. Finally, we discuss the strengths and limita- tions of TUIs and chart directions for future research

Personalization in cultural heritage: the road travelled and the one ahead

Over the last 20 years, cultural heritage has been a favored domain for personalization research. For years, researchers have experimented with the cutting edge technology of the day; now, with the convergence of internet and wireless technology, and the increasing adoption of the Web as a platform for the publication of information, the visitor is able to exploit cultural heritage material before, during and after the visit, having different goals and requirements in each phase. However, cultural heritage sites have a huge amount of information to present, which must be filtered and personalized in order to enable the individual user to easily access it. Personalization of cultural heritage information requires a system that is able to model the user (e.g., interest, knowledge and other personal characteristics), as well as contextual aspects, select the most appropriate content, and deliver it in the most suitable way. It should be noted that achieving this result is extremely challenging in the case of first-time users, such as tourists who visit a cultural heritage site for the first time (and maybe the only time in their life). In addition, as tourism is a social activity, adapting to the individual is not enough because groups and communities have to be modeled and supported as well, taking into account their mutual interests, previous mutual experience, and requirements. How to model and represent the user(s) and the context of the visit and how to reason with regard to the information that is available are the challenges faced by researchers in personalization of cultural heritage. Notwithstanding the effort invested so far, a definite solution is far from being reached, mainly because new technology and new aspects of personalization are constantly being introduced. This article surveys the research in this area. Starting from the earlier systems, which presented cultural heritage information in kiosks, it summarizes the evolution of personalization techniques in museum web sites, virtual collections and mobile guides, until recent extension of cultural heritage toward the semantic and social web. The paper concludes with current challenges and points out areas where future research is needed

Investigating the usability and utility of tangible modelling of socio-technical architectures

Socio-technical models are models that represent social as well as technical elements of the modeling subject, where the technical part consists of both physical and digital elements. Examples are enterprise models and models of the target of assessment used in risk assessment. Constructing and validating these models often implies a challenging task of extracting and integrating information from a multitude of stakeholders which are rarely modelling experts and don’t usually have the time or desire to engage in modelling activities.\ud We investigate a promising approach to overcome this challenge by using physical tokens to represent the model. We call the resulting models tangible models.\ud In this paper we illustrate this idea by creating a tangible representations of a socio-technical modelling language used in Risk Assessment and provide an initial validation of the relative usability and utility of tangible versus abstract modelling by an experiment and a focus group, respectively. We discuss possible psychological and social mechanisms that could explain the enhanced usability and utility of tangible modelling approaches for domain experts. Finally, we discuss the generalizability of this approach to other languages and modelling purposes

COBRA framework to evaluate e-government services: A citizen-centric perspective

E-government services involve many stakeholders who have different objectives that can have an impact on success. Among these stakeholders, citizens are the primary stakeholders of government activities. Accordingly, their satisfaction plays an important role in e-government success. Although several models have been proposed to assess the success of e-government services through measuring users' satisfaction levels, they fail to provide a comprehensive evaluation model. This study provides an insight and critical analysis of the extant literature to identify the most critical factors and their manifested variables for user satisfaction in the provision of e-government services. The various manifested variables are then grouped into a new quantitative analysis framework consisting of four main constructs: cost; benefit; risk and opportunity (COBRA) by analogy to the well-known SWOT qualitative analysis framework. The COBRA measurement scale is developed, tested, refined and validated on a sample group of e-government service users in Turkey. A structured equation model is used to establish relationships among the identified constructs, associated variables and users' satisfaction. The results confirm that COBRA framework is a useful approach for evaluating the success of e-government services from citizens' perspective and it can be generalised to other perspectives and measurement contexts. Crown Copyright © 2014.PIAP-GA-2008-230658) from the European Union Framework Program and another grant (NPRP 09-1023-5-158) from the Qatar National Research Fund (amember of Qatar Foundation

Matching social support with stressors: Effects on factors underlying performance in tennis.

notes: Conceived and formulated by Rees, this original study works innovatively with Cutrona and Russell’s (1990) matching hypothesis. Its contribution to knowledge and method is two-fold. First, it demonstrates with data from 130 high-performance tennis players that social support can protect players from the negative impact of stress on performance. Second, it demonstrates that detailed matching of support with stressors, through a combination of considering the controllability or otherwise of the stressors, by employing context-specific measurement of social support, and by using confirmatory factor analyses and moderated hierarchical regression analyses, this detailed matching process can successfully detect hypothesised interactions.publication-status: Publishedtypes: ArticleCopyright © 2004 Elsevier. NOTICE: this is the author’s version of a work that was accepted for publication in Psychology of Sport and Exercise. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Psychology of Sport and Exercise, 2004, Vol. 5, Issue 3, pp. 319 – 337 DOI: 10.1016/S1469-0292(03)00018-9Objectives: This study: (a) examined the factor structure of a four-dimensional measure of social support designed specifically for this study; (b) matched social support dimensions with stressors in examining the main and stress-buffering effects of social support upon factors underlying performance in tennis. Method: 130 high level tennis players completed measures of social support, stressors, and performance factors. Results: Analyses of covariance structures largely provided support for the four-dimensional structure of the social support measure. Moderated hierarchical regression analyses revealed significant main and stress-buffering effects of the social support dimensions upon performance factors. Conclusions: The results illustrate the importance of matching specific types of sport-relevant social support with the needs elicited by the stressors under consideration. They also illustrate the need to pay close attention to the measurement instruments used in such studies. In this study, the finding of significant stress-buffering effects of social support may have been optimised through detailed attention to the measurement instruments chosen for the constructs under study. Applied implications would include developing an understanding of the beneficial role social support has to play in protecting players from the deleterious impact of stressors upon performance. Providers of support should, however, carefully match their support to the needs of the individual

Curated routes: the project of developing experiential tracks in sub-urban landscape

The Curated Routes project reflects on the visiting routes’ ability to make apparent the internal characteristics of urban environments. The project’s name allude to the intellectual function of curation and the materiality of routes. Curate deals with the practice of arranging material –tangible or intangible- in a way that a new understanding of an area is revealed. The word routes refers to the linear associations that link places and guide movement. The Curated Routes aim to reinforce the development of bonding ties between people and urban environments by re-constructing the way we visit and explore a place. The overall goal of the project is to outline the conceptual guidelines of a visitors’ guide that could later be used for the development of the informatics model. The project follows the methodology that the context-aware routes apply, though particular attention is paid to the second phase of the process where an innovative approach is applied. The introduction of the “chronotope” filters enables us to “knit” the terrestrial route to a range of informative storylines, and hence to develop different interpretations of an urban environment

Empowering cultural heritage professionals with tools for authoring and deploying personalised visitor experiences

This paper presents an authoring environment, which supports cultural heritage professionals in the process of creating and deploying a wide range of different personalised interactive experiences that combine the physical (objects, collection and spaces) and the digital (multimedia content). It is based on a novel flexible formalism that represents the content and the context as independent from one another and allows recombining them in multiple ways thus generating many different interactions from the same elements. The authoring environment was developed in a co-design process with heritage stakeholders and addresses the composition of the content, the definition of the personalisation, and the deployment on a physical configuration of bespoke devices. To simplify the editing while maintaining a powerful representation, the complex creation process is deconstructed into a limited number of elements and phases, including aspects to control personalisation both in content and in interaction. The user interface also includes examples of installations for inspiration and as a means for learning what is possible and how to do it. Throughout the paper, installations in public exhibitions are used to illustrate our points and what our authoring environment can produce. The expressiveness of the formalism and the variety of interactive experiences that could be created was assessed via a range of laboratory tests, while a user-centred evaluation with over 40 cultural heritage professionals assessed whether they feel confident in directly controlling personalisation

The impacts of IFPRI's global research program on the sustainable development of less favored areas:

"This report assesses the impact of IFPRI's Global Research Program on The Sustainable Development of Less-Favored Areas ("GRP-5"). Initiated in 1998, the stated objectives of the research program were (a) to provide empirical evidence on appropriate development strategies and public investments for improving the well-being of individuals living in less-favored areas (LFAs); and (b) to assess the appropriate targeting of various public investments to favored versus less-favored areas. The program's research activities generally were confined to addressing the first of these objectives. The GRP-5 research was primarily undertaken in Ethiopia, Honduras, and Uganda, using quantitative livelihoods and bio-economic modeling approaches to studying constraints and opportunities for poor households in less-favored areas (LFAs). In the first section of the report, we place this research program in the context of the body of work conducted within the CGIAR that has investigated the appropriate allocation of various public investments between favored and less-favored agroecological zones. The second section of the report provides a brief overview of the program's research activities within each of the three countries of emphasis, along with the various research outputs. These research activities extended work on resource degradation and land management that IFPRI had been involved in prior to the initiation of GRP-5. Major workshops held in each country were the principal venues for dissemination of the research findings. A primary goal of these workshops was to influence individuals in positions of authority to act upon those findings, either in terms of instituting formal policies or programs, or fostering follow-up research more directly geared to implementation. The workshops were, however, by no means the only outputs from the program. Besides the workshop papers a wide range of publications was generated by the program including dissemination briefs, research reports, papers in journals (including special editions containing a series of papers generated by the project and related research), and a book published in 2006 entitled Strategies for Sustainable Land Management in the East African Highlands (Pender, Place, and Ehui 2006a). The third section of the report briefly reviews the extent to which the GRP-5 research program achieved its stated objectives. In Honduras, the operational approach concentrated exclusively on LFAs and was therefore incapable of addressing the basic issue of the appropriate allocation of resources and development effort between favored and less-favored areas. The research in both Uganda and Ethiopia did include areas of both high and low agricultural potential, and produced some results comparing the impacts of similar interventions in different agroecological domains; but the primary emphasis remained on LFAs. In part, this was no doubt related to financial constraints limiting the geographic extent of the projects' fieldwork. But additionally, it may well reflect the practical difficulties of reconciling research themes of general interest within the CGIAR and the broader donor community (i.e., geographic allocation of research and investment funds) with exigencies of engaging local policymakers whose interest lay in understanding the opportunities and constraints conditioning the appropriate development strategies for different types of less-favored lands. The report's fourth section discusses the study team's findings, based on field visits to Ethiopia, Honduras, and Uganda, regarding perceptions of the influence and impact of the GRP-5 research activities. There was general agreement that IFPRI's approach to the research was rigorous, well-conceived and well-executed, and that the information generated is highly useful as a description of the realities of agricultural households in LFAs. IFPRI researchers were uniformly praised for the care with which data collection efforts were undertaken and the rigor with which those data were analyzed. The training aspect of the research was generally acknowledged by those involved in the programs. This included both the formal graduate training and interaction with students and faculty staff at local academic institutions. Finally, there was widespread sentiment that the research had succeeded in drawing attention to, and contributing to policy debates surrounding, poverty issues in LFAs. IFPRI's research is widely held to have established important baseline information for use in monitoring changes that may occur if and when policy initiatives are undertaken in the future. Some shortcomings were identified as well. Concerns about analytical methods were expressed by some (primarily non-economists). Others indicated that there was insufficient follow-up for the wider policy community or the general public after the high-profile summary workshops that presented the research findings, and that the academic nature of the research outputs was not directly relevant to policymakers. Finally, significant concern was expressed about substantial lags—upwards of three years—between the time the research was completed and the time the main research reports were published. The final sections of the report discuss tangible indications of impact on policy in the countries of emphasis. The GRP-5 work's primary contribution was as a benchmark. There is a widespread sentiment among those with experience of the GRP-5 research program in the participating countries that it generated a useful and much-needed description of the socioeconomic conditions within which poor households operate in less-advantaged regions. This information has been of value in subsequent follow-on research in terms of problem definition, research focus, and (in some cases) site selection. It has also been useful in the design and implementation of some rural development projects as well. There was considerable variation in the extent to which the research program had a direct impact on policy or related programs. In the case of Uganda, the preliminary findings of IFPRI's research were, at least for a time, fairly closely linked to the government's agricultural priority-setting process. In the case of Ethiopia, in the early years of the research work there was a close relationship between the research team, a local university and the regional Bureau of Agriculture. As a result, research findings did inform state level policies and programs. But, as these relationships weakened over time, and particularly once the research work was completed, this influence waned. In Honduras, the high degree of collaboration between IFPRI researchers and their PRONADERS partners appeared to have set the stage for translating research results seamlessly into government policy. Unfortunately, the change in government midway through the data collection phase of the project altered the situation irrevocably. A number of factors are identified as contributing to the difficulty of translating the research findings into actionable policies and policy outcomes. First, there are several different audiences for research of the sort reviewed here, including the broader research and donor communities, the in-country policy community, and field practitioners. The information demands for each group are by no means the same, and in some cases there may in fact be little overlap. Second, the intellectual culture at IFPRI favoring academic research suitable for publication in scholarly journals can limit the relevance of the research to policy makers (and also to field practitioners). Third, limited on-site representation significantly restricts IFPRI's ability to influence policy debates. In summary, the assessment team was left with the conclusion that the sort of research conducted under GRP-5 has significant potential usefulness to other follow-on research, as well as for the design of projects aimed at improving the well-being of smallholders in LFAs. But, it is far more difficult to see clear links to policymakers who approach their jobs with their own particular agendas. This in no way diminishes the value of the research per se, but it certainly calls into question its sustained influence on the policymaking process." from Author's AbstractImpact assessment, Sustainable development, Less favored areas, Land management,