In this paper we regard the navigation aid provided by mobile navigation systems in a real environment and the effects of these mobile assistants to the development of spatial knowledge. Therefore, we report on a user study concerning the acquisition of spatial knowledge. This study sets up on a former study described by Krüger and colleagues and sheds light on problems concerning the acquisition of survey knowledge while being navigated by a mobile handheld PC.
In this research, we describe an empirical study, which aimed at identifying influencing factors on acceptance of electric vehicles. Understanding individual arguments and to reach a high usage rate of these vehicles in the public and a broad acceptance, the identification of possible prousing motives as well as perceived drawbacks is essential, which would allow a sensitive and individually-tailored communication and information policy. Using an exploratory approach, a questionnaire study was carried out in which participants were requested to indicate the level of acceptance and the intention to use electric cars. The questionnaire items were taken from several focus groups, which had been carried out prior to the questionnaire study. Outcomes show that the traditional car is perceived still as much more comfortable, and receives a high trustfulness in comparison to electric cars. In addition, user diversity in terms of age and gender was found to considerably the perceived benefits and barriers. Female users but also aged persons show a higher level of acceptance, which might be due to their higher environmental consciousness in contrast to male persons and younger participants. Interestingly, the selfreported level of domain knowledge (significantly higher in men) did not show a large influence on the level of acceptance.
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