Past studies suggested that decision support systems (DSS) must be an “enabling” system aiming to enhance users’ capabilities and to leverage their skills and intelligence. This suggests that users be the center of DSS and users’ characteristics be an important factor of explaining their DSS acceptance behavior. Since DSS are aimed to work in semi-structured and unstructured task environment, p...

Task analysis can be defined as the study of what a user is re q u i red to do, in terms of actions and/or cognitive processes, to achieve a task objective. The idea is that task analysis provides some stru c t u re for the description of tasks or activities, which then makes it easier to describe how activities fit together, and to explore what the implications of this may be for the design of...

A substantial body of research has highlighted the effects of experience on individual performance in groups. However, the challenges individuals confront after moving between groups require the adoption of more finely grained categorizations of experience to understand how they will help or hinder performance in novel group environments. This article develops a distinct form of experience here...

Workflow management systems (WFMS) coordinate execution of multiple tasks performed by different entities within an organization. In order to coordinate the execution of the various tasks in a workflow, task dependencies are specified among them. These task dependencies are enforced during the normal execution of the workflow. When a system crash occurs some tasks of the workflow may be committ...

Stigmergy is usually used to model semantically simple problems such as routing. It can be applied to more complex problems by encoding them in the stigmergic environment. We demonstrate this approach by showing how stigmergic agents can plan over a hierarchical task network, specifically a resource-oriented dialect of the TÆMS language.

As a project manager or task manager, you will be responsible for implementing government policy decisions and for making many operational decisions on the ground. The handbook provides information on the options that should be considered in various aspects of reconstruction and insight into what has worked elsewhere. It does not tell you exactly what to do, but it should improve the likelihood...

We present a new interaction metaphor for object-centric tasks in the form of a prototype VR system, ALCOVE. Through analytic calculations, we quantitatively demonstrate the benefits of restructuring the interaction volume offered by current systems. Our metrics show that many applications’ interaction volume increases by 1.5 to 2.6 times when using the ALCOVE system. We also offer an informal ...

Hierarchical task network and action-based planning approaches have traditionally been studied separately. In many domains, human expertise in the form of hierarchical reduction schemas exists, but is incomplete. In such domains, hybrid approaches that use both HTN and action-based planning techniques are needed. In this paper, we extend our previous work on refinement planning to include hiera...

Since the initial publication in 1994, Coordination Theory (Malone and Crowston, 1994) has been referenced in nearly 300 journal articles, book chapters, conference papers and theses. This chapter will analyze the contribution of this body of research to determine how Coordination Theory has been used for user task analysis and modelling for HCI. Issues that will be addressed include: I) how th...