In this paper, a formal model for antivirus update agent system is presented based on mobile agent technology and predicate/transition Petri nets. The mobile agent system contains two mobile agents called DCA and UNA. It sends out agents to update antivirus on client computers in a network. Each agent takes on a specified responsibility. First, DCA roams through the network and check the last d...

Help seeking behavior in an intelligent tutoring system was analyzed to identify help seeking strategies, and it was investigated whether the use of these strategies could be predicted by achievement goal scores. Five strategies were identified, three of which were predicted by achievement goal scores. These strategies were labeled Little Help, Click through Help, Direct Solution, Step By Step,...

The relationships between coping, affect and aging were examined using mastery and self-esteem as mediators of the aging–coping–affect associations. The sample included 168 young and old community residents who completed the dispositional coping strategies questionnaire [COPE scale; Carver, C.S., Scheier, M., & Weintraub, J.K. (1989). Assessing coping strategies: a theoretically based approach....

Objectives: Research has suggested that higher mastery is associated with lower cardiovascular disease (CVD) risk. This pilot study investigated how a range of psychosocial factors, including mastery, relate to CVD risk factors among Aboriginal people living in rural south-eastern Australia. Methods: Psychosocial and behavioural measures were obtained via questionnaire as part of developing a c...