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The authors investigated the idea that memory systems might have evolved to help us remember fitness-relevant information--specifically, information relevant to survival. In 4 incidental learning experiments, people were asked to rate common nouns for their survival relevance (e.g., in securing food, water, or protection from predators); in control(More)
We recently proposed that human memory systems are "tuned" to remember information that is processed for survival, perhaps as a result of fitness advantages accrued in the ancestral past. This proposal was supported by experiments in which participants showed superior memory when words were rated for survival relevance, at least relative to when words(More)
The ability of younger and older observers to perceive 3-D shape and depth from motion parallax was investigated. In Experiment 1, the observers discriminated among differently curved 3-dimensional (3-D) surfaces in the presence of noise. In Experiment 2, the surfaces' shape was held constant and the amount of front-to-back depth was varied; the observers(More)
In two experiments, we investigated the ability of younger and older observers to perceive and discriminate 3-D shape from static and dynamic patterns of binocular disparity. In both experiments, the younger observers' discrimination accuracies were 20% higher than those of the older observers. Despite this quantitative difference, in all other respects the(More)
OBJECTIVE Intravenous medications are vital during inpatient management. Errors associated with the administration of medications through intravenous infusion pumps to critically ill patients can result in adverse drug events. We sought to assess the impact of smart pumps with integrated decision support software on the incidence and nature of medication(More)
A technique, based upon abstract interpretation, is presented that allows general gate-level combinational asynchronous circuits with uncertain delay characteristics to be reasoned about. Our approach is particularly suited to the simulation and model checking of circuits where the identification of possible glitch states (static and dynamic hazards) is(More)
OBJECTIVE A rule-based prototype decision support tool; Braden-scale based Automated Risk-assessment Tool (BART) was developed to test whether pressure ulcer risk scores can be determined automatically based on the documented patient data. METHODS The data items required for assessing pressure ulcer risk were identified by analyzing the parameter(More)
Existing digital logic simulators typically depend on a discrete-time model of circuit behaviour. Whilst this approach is sufficient in many cases for the validation of the behaviour of synchronous circuits, it is not good at identifying glitches that are narrower than the available time resolution. Moreover , it is not generally feasible to accommodate(More)
Conventionally, spacecraft wiring harnesses are built with architectures that are fixed at manufacture. They must therefore be designed to endure the lifetime of the mission with a very high probability, though the necessary redundant duplication of signals has significant implications for mass. At a launch cost in excess of $30,000 per kg, reducing the(More)