| 1. |
- Broström, Robert, et al.
(författare)
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Correlation between safety assessments in the driver-car interaction design process
- 2011
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Ingår i: Applied Ergonomics. - : Elsevier BV. - 0003-6870 .- 1872-9126. ; 42:4, s. 575-582
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Tidskriftsartikel (refereegranskat)abstract
- With the functional revolution in modern cars, evaluation methods to be used in all phases of driver-car interaction design have gained importance. It is crucial for car manufacturers to discover and solve safety issues early in the interaction design process. A current problem is thus to find a correlation between the formative methods that are used during development and the summative methods that are used when the product has reached the customer. This paper investigates the correlation between efficiency metrics from summative and formative evaluations, where the results of two studies on sound and navigation system tasks are compared. The first, an analysis of the J.D. Power and Associates APEAL survey, consists of answers given by about two thousand customers. The second, an expert evaluation study, was done by six evaluators who assessed the layouts by task completion time, TLX and Nielsen heuristics. The results show a high degree of correlation between the studies in terms of task efficiency, i.e. between customer ratings and task completion time, and customer ratings and TLX. However, no correlation was observed between Nielsen heuristics and customer ratings, task completion time or TLX. The results of the studies introduce a possibility to develop a usability evaluation framework that includes both formative and summative approaches, as the results show a high degree of consistency between the different methodologies. Hence, combining a quantitative approach with the expert evaluation method, such as task completion time, should be more useful for driver-car interaction design.
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| 2. |
- Broström, Robert, et al.
(författare)
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Towards a model to interpret driver behaviour in terms of mismatch between real world complexity and invested effort
- 2012
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Ingår i: Work. - 1051-9815 .- 1875-9270. ; 41:Suppl. 1, s. 5068-5074
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Tidskriftsartikel (refereegranskat)abstract
- Driving behaviour has been less documented than driver workload. The possibilities to define a framework that could be part of a driving behaviour model were investigated. The results present a framework that defines twelve scenarios in which drivers have misinterpreted a driving situation. The descriptions show evidence of increased user experience for some scenarios while other indicates reduced traffic safety. The results suggest that by using the framework-descriptions on how and why mismatches occur, design guidelines for in-vehicle systems can be developed.
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| 3. |
- Grane, Camilla, et al.
(författare)
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Project: EFESOS - Environmental Friendly efficient Enjoyable and Safety Optimized Systems
- 2012
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Annan publikation (populärvet., debatt m.m.)abstract
- EFESOS is a Swedish Vehicle HMI (Human Machine Interaction) FFI research project. The overall ambition is to make driving of future cars more environmental friendly, enjoyable and safer by means of optimized systems. The project is managed by Volvo Car Corporation (VCC) and it is a collaboration between VCC and seven other research partners including Luleå University of Technology.
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| 4. |
- Rydström, Annie, et al.
(författare)
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A comparison of two contemporary types of in-car multifunctional interfaces
- 2012
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Ingår i: Applied Ergonomics. - : Elsevier BV. - 0003-6870 .- 1872-9126. ; 43:3, s. 507-514
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Tidskriftsartikel (refereegranskat)abstract
- A driving simulator study was conducted to investigate the effects of carrying out a variety of tasks using two different types of contemporary in-car multifunctional interfaces: a touch screen interface and an interface manoeuvred by a rotary control. Participants drove on a curved rural road while performing tasks such as list scrolling, radio tuning, alphanumeric input and continuous adjustments. The results indicate that, in terms of task completion time and the number of glances made to the display, the optimal interface is dependent on the task being performed. The touch screen interface was better for alphanumeric input tasks and the interface manoeuvred by a rotary control was better for continuous adjustments and list scrolling. Alphanumeric input seems to be more demanding than other tasks, independent of the interface used. It was apparent in this simulator study that both interfaces affected the lateral control performance, but lateral control performance deteriorated to a greater extent when the touch screen interface was used, probably partially as a result of the lower display position.
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| 5. |
- Rönnbäck, Marie, et al.
(författare)
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Utveckling av framtida konkurrenskraftig närvärme (0,05-20 MWth) med säkrad bränslekvalitet samt hög tillgänglighet, effektivitet och miljöprestanda
- 2011
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The heating sector (0.05 to 20 MW) is during the coming years facing an increased competition for (bio) fuels and, at the same time, an expanded broadening of the raw material base for fuels. At the same time the demand for availability, efficiency and environmental performance are increasing. This report describes key barriers, knowledge gaps and needs for research, development and demonstration activities identified. Producers of fuels and of combustion equipments as well as users have been identified and their views have been collected through interviews and / or questionnaires. Research and ongoing programs and activities in Sweden are described briefly. The results show great need for knowledge of new fuels in the whole chain from fuel processing to quality assurance, combustion and emission reduction. There is also great need for coordination of resources, clarification of the research structure, increased contact and improved communication and implementation of results. Based on the results a structure, content and funding of a coordinated R & D program with a focus on the heating sector 0,05-20 MW is proposed. Key factors for success are the inclusion of the entire chain fuel-conversion-system/environment, coordination of physical locations for research and development, and overall governance. All three parts basic research, applied research and demonstration should be included.
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