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Sökning: WFRF:(Agardh Johannes)

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1.
  • Agardh, Johannes, et al. (författare)
  • Designing Future Interaction with Today's Technology
  • 1999
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Information Technology has an increasing part of our lives. In this thesis we will discuss how technology can relate to humans and human activity. We take our standing point in concepts like Calm Technology and Tacit Interaction and examine how these visions and concepts can be used in the process of designing an artifact for a real work practice. We have done work-place studies of truck-drivers and traffic leaders regarding how they find their way to the right addresses and design a truck navigation system that aims to suit the truck drivers work practice.
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2.
  • Haghighi, Mona, et al. (författare)
  • A Comparison of Rule-based Analysis with Regression Methods in Understanding the Risk Factors for Study Withdrawal in a Pediatric Study
  • 2016
  • Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 6
  • Tidskriftsartikel (refereegranskat)abstract
    • Regression models are extensively used in many epidemiological studies to understand the linkage between specific outcomes of interest and their risk factors. However, regression models in general examine the average effects of the risk factors and ignore subgroups with different risk profiles. As a result, interventions are often geared towards the average member of the population, without consideration of the special health needs of different subgroups within the population. This paper demonstrates the value of using rule-based analysis methods that can identify subgroups with heterogeneous risk profiles in a population without imposing assumptions on the subgroups or method. The rules define the risk pattern of subsets of individuals by not only considering the interactions between the risk factors but also their ranges. We compared the rule-based analysis results with the results from a logistic regression model in The Environmental Determinants of Diabetes in the Young (TEDDY) study. Both methods detected a similar suite of risk factors, but the rule-based analysis was superior at detecting multiple interactions between the risk factors that characterize the subgroups. A further investigation of the particular characteristics of each subgroup may detect the special health needs of the subgroup and lead to tailored interventions.
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3.
  • Rydström, Annie, et al. (författare)
  • Multifunctional systems in vehicles : a usability evaluation
  • 2005
  • Ingår i: Proceedings of CybErg 2005. - : International Ergonomics Association. ; , s. 768-775
  • Konferensbidrag (refereegranskat)abstract
    • Car Human-Machine Interaction (HMI) is becoming increasingly complex as the extension of functionality necessitates new interface concepts. Various multifunctional systems operated by haptic rotary switches, touch screen, and voice control have been developed. A usability study of multifunctional systems available on the market was carried out to evaluate and compare different manual interaction principles. The systems used in the study were the BMW iDrive and the Audi MMI, both operated by a rotary switch, and the Jaguar touch screen interface. Firstly, a usability test was conducted where two naive and two trained participants tested each system during driving. Ten tasks, comprising CD, radio and navigation were solved by the participants. Secondly, six evaluators carried out a usability inspection, heuristic evaluation, to find possible problems in the systems. The results from the usability test indicated that the naive users interacted more rapidly with the touch screen interface. Trained users, on the other hand, had more even results over the systems. The problems found in the usability inspection gave explanations to some of the longer task times in the usability test.
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