This study examined the effects of aging, planning, and interruption on complex prospective memory (PM) using a 2 x 2 x 2 between-subjects design. Participants were 80 younger adults (65 females) aged 18-33 years and 80 older adults (70 females) aged 60-75 years. They were randomly allocated to four conditions (viz., no interruption and no planning, interruption but no planning, planning but no...

One big obstacle to understanding the nature of hierarchical task network (htn) planning has been the lack of a clear theoretical framework. In particular, no one has yet presented a clear and concise htn algorithm that is sound and complete. In this paper, we present a formal syntax and semantics for htn planning. Based on this syntax and semantics, we are able to deene an algorithm for htn pl...

To promote sun safety by implementing different plans for sunscreen use, different psychological interventions are compared. Self-regulatory strategies such as action planning and coping planning are seen as proximal predictors of actual behavior. The study compares a pure planning intervention with a broader resource communication and examines differential effects at different stages of change...

Arginine is a semi-essential amino acid that plays a critical role in several metabolic pathways. The best known of these is as the immediate precursor of urea in the liver and to a lesser extent in the intestine.1 The enzyme responsible for the cleavage of arginine to produce urea is arginase, which is the only enzyme in the urea cycle that comes in two forms, arginase I, a cytosolic enzyme, a...

It is known that a planning domain model influences performance of planners, but so far there have been only limited studies how exactly models influence planners’ performance. There are also no guidelines how to design efficient planning models. This paper studies several modeling techniques, namely factored and structured representations of states, heuristics, and control knowledge and their ...

One big obstacle to understanding the nature of hierarchical task network (htn) planning has been the lack of a clear theoretical framework. In particular, no one has yet presented a clear and concise htn algorithm that is sound and complete. In this paper, we present a formal syntax and semantics for htn planning. Based on this syntax and semantics, we are able to de ne an algorithm for htn pl...