Current Issue : April - June Volume : 2014 Issue Number : 2 Articles : 5 Articles
Using a vocal, auditory, and haptic application designed for maritime navigation, blind sailors are able to set up and manage their\r\nvoyages.However, investigation of themanner to present information remains a crucial issue to better understand spatial cognition\r\nand improve navigation without vision. In this study, we asked two participants to use SeaTouch on board and manage the ship\r\nheadings during navigation in order to follow a predefined itinerary. Two conditions were tested. Firstly, blind sailors consulted\r\nthe updated ship positions about the virtual map presented in an allocentric frame of reference (i.e., facing north). In the second\r\ncase, they used the forced-feedback device in an egocentric frame of reference (i.e., facing the ship headings). Spatial performance\r\ntended to show that the egocentric condition was better for controlling the course during displacement, whereas the allocentric\r\ncondition was more efficient for building mental representation and remembering it after the navigation task....
In todayââ?¬â?¢s society, as computers, the Internet, and mobile phones pervade almost every corner of life, the impact of Information\r\nand Communication Technologies (ICT) on humans is dramatic. The use of ICT, however, may also have a negative side. Human\r\ninteraction with technology may lead to notable stress perceptions, a phenomenon referred to as technostress. An investigation\r\nof the literature reveals that computer usersââ?¬â?¢ gender has largely been ignored in technostress research, treating users as ââ?¬Å?genderneutral.ââ?¬Â\r\nTo close this significant research gap, we conducted a laboratory experiment in which we investigated usersââ?¬â?¢ physiological\r\nreaction to the malfunctioning of technology. Based on theories which explain that men, in contrast to women, are more sensitive\r\nto ââ?¬Å?achievement stress,ââ?¬Â we predicted that male users would exhibit higher levels of stress than women in cases of system breakdown\r\nduring the execution of a human-computer interaction task under time pressure, if compared to a breakdown situation without\r\ntime pressure. Using skin conductance as a stress indicator, the hypothesis was confirmed.Thus, this study shows that user gender\r\nis crucial to better understanding the influence of stress factors such as computer malfunctions on physiological stress reactions....
All humans feel emotions, but individuals express their emotions differently because each has a different personality. We design\r\nan emotional decision model that focuses on the personality of individuals. The personality-based emotional decision model\r\nis designed with four linear dynamics, viz. reactive dynamic system, internal dynamic system, emotional dynamic system, and\r\nbehavior dynamic system. Each dynamic system calculates the output values that reflect the personality, by being used as system\r\nmatrices, input matrices, and output matrices. These responses are reflected in the final emotional behavior through a behavior\r\ndynamic system as with humans.The final emotional behavior includesmultiple emotional values, and a social robot shows various\r\nemotional expressions.We performsome experiments using the cyber robot system, to verify the efficiency of the personality-based\r\nemotional decision model that generates various emotions according to the personality....
Social attributes of intelligent robots are important for human-robot systems.This paper investigates influences of robot autonomy\r\n(i.e., high versus low) and group orientation (i.e., ingroup versus outgroup) on a human decision-making process. We conducted\r\na laboratory experiment with 48 college students and tested the hypotheses with MANCOVA. We find that a robot with high\r\nautonomy has greater influence on human decisions than a robot with low autonomy. No significant effect is found on group\r\norientation or on the interaction between group orientation and autonomy level. The results provide implications for social robot\r\ndesign....
User modeling and profiling has been used to evaluate systems and predict user behaviors for a considerable time. Models and\r\nprofiles are generally constructed based on studies of users� behavior patterns, cognitive characteristics, or demographic data and\r\nprovide an efficient way to present users� preferences and interests. However, such modeling focuses on users� interactions with a\r\nsystem and cannot support complicated social interaction, which is the emerging focus of serious games, educational hypermedia\r\nsystems, experience, and service design. On the other hand, personas are used to portray and represent different groups and\r\ntypes of users and help designers propose suitable solutions in iterative design processes. However, clear guidelines and research\r\napproaches for developing useful personas for large-scale and complex social networks have not been well established. In this\r\nresearch, we reflect on three different design studies related to social interaction, experience, and cross-platform service design to\r\ndiscuss multiple ways of identifying both direct users and invisible users in design research. In addition, research methods and\r\nattributes to portray users are discussed....
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