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- Hedman, Anna
(författare)
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The value of simplicity : image browsing techniques and tests
- 2010
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Image browsing is involved in many different types of tasks, such as interacting with a desktop and file system, viewing digital photo albums, etc. Different techniques are available for different types of tasks, but results from image browsing tests have been varied.The work of this thesis includes a literature survey, describing the most common image browser features and mechanisms, and summarizing research on the topic. The survey is followed by two image browsing studies, comparing an iconic interface to a zoom-and-pan and a fisheye interface. One study was made on a regular 19" display, and the other one on a 50" display with a 3D mouse. Both studies showed that none of the zoom-and-pan and the fisheye interfaces were more efficient than the simple iconic interface. The iconic interface was also the one most preferred by users. The problem with conflicting research results in this field is addressed in a summary of layout and presentation factors. There are a number of things, besides just interaction style, that affects usability. A lot remains to be investigated, and the analysis presented in this thesis gives an idea of some things to consider for future research. The two final studies of this thesis were parts of an interface design proposal for an oil analysis interface. One experiment showed that for reading single graphs, multiple diagrams with only one line graph in each are more efficient than one single chart with several line graphs. The final study of this thesis is a comparison of two graph tables, one distortion-oriented, and one overview+detail version. A theoretical analysis showed that for certain task types the static overview+detail interface would be more efficient than the distortion-oriented one, which was confirmed by the statistical analysis of data from the experiment. Users preferred the static overview+detail interface, mainly because they did not like that the view changed.The common experience of this work is that simplicity is highly valuable in many aspects. A simple interaction technique, such as an iconic interface, is often more efficient and more appreciated by users, than more advanced techniques. Reading single line graphs is more efficiently done in single small diagrams than in one large common diagram. Simple static modes are by many users preferred to dynamic modes. And finally, simple usability tests with a minimized number of confounding variables could explain and reduce the problem with conflicting results. Hence, the main conclusion and message of this thesis goes for both interface design and testing: Keep it simple.
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| 2. |
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| 3. |
- Sandberg, Karl W, et al.
(författare)
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Barriers to adapt eCommerce by rural microenterprises in Sweden : a case study
- 2014
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Ingår i: International Journal of Knowledge and Research in Management and E-Commerce. - 2231-203X .- 2231-0339. ; 4:1, s. 1-7
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Tidskriftsartikel (refereegranskat)abstract
- Research has shown that small and medium-sized enterprises (SMEs) are rapidly adopting the e-commerce. However, there is nearly no research into how microenterprises are adopting eCommerce. Present paper focus on microenterprise adaption of eCommerce in terms of barriers in relation to already known research on SMEs. A case study, carried out by 12 microenterprises to find out barriers to adapt eCommerce had been done. The empirical results show that the microenterprises share most of the barriers to adapt the eCommerce with studies of SMEs, but also reveal additional factors affecting adaptation option of eCommerce; supplier agreement, communication and customer strategy. Conclusions are that microenterprises need additional support and communication and customer strategy to adapt eCommerce, depending of their requirement and needs of eCommerce.
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| 4. |
- Sandberg, Karl W, et al.
(författare)
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Evaluation user interface of VDU in a process control room
- 2011
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Ingår i: Ergonomics for all. - Leiden : CRC Press. - 9780415586085 ; , s. 73-77
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Konferensbidrag (refereegranskat)abstract
- Varied types of Visual Display Unit (VDU) are used in modern process control rooms. The main purpose of present study is to identify and find solutions to usability problems of VDU user interface in process control room. The usability evaluation methods were heuristic evaluation, usability test, and SUMI questionnaire. Fifteen operators participated in the study. The main result from the usability test were that the time to solve the task depends on the number of false clicks and commands, and participants experienced that user interface doesn't support in an efficient manner, too many and difficult steps must be performed. To improve the user interface of VDU we have created number of guidelines; for example; create groups of the fields, buttons, text, place the buttons in functionally way, enable the user to open multiple windows, drag and drop is a dynamic operation. © 2011 Taylor & Francis Group.
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| 6. |
- Sandberg, Karl W, et al.
(författare)
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Innovation och e-innovation inom vård och rehabilitering?
- 2012
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Ingår i: E-hälsa – innovationer, metoder, interventioner och perspektiv. - Lund : Studentlitteratur. - 9789144067629 ; , s. 255-266
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- E-hälsa – innovationer, metoder, interventioner och perspektiv tar upp definitioner och modeller för e-hälsa, metoder och processer att utveckla e-hälsa samt beskrivningar av olika projekt inom området. Boken visar på hur informations- och kommunikationsteknik kan användas inom olika områden, t.ex. hälsopromotion inom arbetslivet, telerehabilitering och verksamhetsutveckling inom logopedi samt som delaktighetsverktyg för äldre och för människor med funktionshinder.
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| 10. |
- Sandberg, Karl W, et al.
(författare)
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Usability evaluation of an interactive service on mobile phone
- 2011
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Ingår i: Ergonomics for all. - Leiden : Taylor & Francis Group. - 9780415586085 ; , s. 67-72
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Konferensbidrag (refereegranskat)abstract
- Social networking services have become increasingly widespread and, together with GPS equipped with mobile phones give citizens the opportunity to create new innovative types of social networks. The service is evolving, technology-centric to positioning using GPS and Google Maps Web service should also identify existing services interfaces are analysed, and be associated with basic functions of social networks to create a new innovative service. The purpose of this work is to illustrate the usercentred interaction design for mobile phones. Research design includes user requirement analysis, prototype development and usability evaluation. The results from usability evaluation in a simulated PC-based environment, support the user tasks in an efficient manner, one can work efficiently and feels that the system is sufficiently adapted to users' needs. © 2011 Taylor & Francis Group.
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