Generalized Conversion Formulas between Multiple Decrement Models and Associated Single Decrement Models

Dependent Decrement Theory

Currently, multiple decrement theory is based on the assumption that competing causes of decrement are stochastically independent, even though this assumption is usually not true in reality. This paper presents wellknown results in the theory of dependent competing risks that are fundamental in extending multiple decrement theory towards a dependent decrement theory. First, the state of the art...

The Vigilance Decrement Reflects Limitations

Robertson, Manly, Andrade, Baddeley, and Yiend (1997) proposed that the decline in performance efficiency over time in vigilance tasks (the vigilance decrement) is characterized by "mindlessness" or a withdrawal of attentional effort from the monitoring assignment. We assessed that proposal using measures of perceived mental workload (NASA-TLX) and stress (Dundee Stress State Questionnaire). Tw...

Performance Decrement under Psychological Stress.

Adaptive measurement of vigilance decrement.

Research investigated the utility of an alternative technique for the study of vigilance performance. The usual approalch has been to study how well subjects responded to a signal of given difficulty; this technique altered the difficulty of the task to ensure a fixed level of performance. A computer-based, self-adjusting program presented background stimuli--a pair of dots 4.25 inches apart di...

Stable Models of Formulas with Generalized Quantifiers

Applications of answer set programming motivated various extensions of the stable model semantics, for instance, to incorporate aggregates and abstract constraint atoms, to facilitate interface with external information sources, such as ontology descriptions, and to integrate with other computing paradigms, such as constraint solving. This paper provides a uniform view on some of these extensio...