A credible theory of intelligence must provide a satisfactory account of the wide spectrum of learning abilities displayed by humans and some other animals. One of the most impressive of these is skill acquisition—the ability to create new skills, refine them through practice, and apply them in new task contexts. This ability to retain and refine solutions to important subproblems and then empl...

The simultaneous consideration of various notions (practice, procedure, prescribed task, effective task, task space, task search, task, method, activity) shows that the task accomplishment cannot be discussed at a general level, as classical approaches do. Rather, this paper points out the importance to distinguish the task definition and the task realization because the former is mainly static...

We propose a compositional framework for analyzing the schedulability of hierarchical scheduling systems. The framework is realized using Parameterized Stopwatch Automata to describe tasks, whereas the schedulability analysis is performed using UPPAAL. The concrete behavior of each periodic preemptive task is given as a list of timed actions to which resources are assigned by SIRAP protocol. Ou...

* Corresponding author ABSTRACT Traditional workflow models have obvious shortcomings in describing complex workflows. Such complexity is due not only to the hierarchical property of business process, but also to the complicated dependencies among tasks. In this paper, we first introduce a conceptual task model based on UML class graph. Then we apply colored Petri nets to model task interfaces ...

The notion of a compensation is widely used in advanced transaction models as means of recovery from a failure. Similar concepts are adopted for providing “transaction-like” behavior for long business processes supported by workflows technology. Generally, designing a compensating task in the context of a workflow process is a non-trivial job. In fact, not every task is compensatable. This work...

Offshore activity is developing and resulting in new demanding high-risk operations. Operation complexity increases with factors like heavier loads, subsea installations, and arctic waters; operational planning requirements increase as well. Demanding offshore operations are usually planned in detail, where plans may fill several binders, leading to information overload for the ship crews. Extr...