In 3 experiments, the effects of age on different kinds of metacognitive prediction accuracy were assessed. participants made global memory predictions and item-by-item memory predictions in a single experimental task. Metacognitive accuracy was evaluated with correlational and more traditional difference-score measures. Difference-score measures were found, in some cases, to be sensitive to le...

Background: Health hazards associated with exposure due to the natural radioactivity which is a part of our physical environment are of great concern. In order to assess the risks associated with exposure due to the natural radioactivity in soil and building materials, extensive studies have been carried out all over the world. The most commonly encountered radionuclide’s are 238U, 2...

for every hyperbolic structure X on S (see [15] and [25]). The proof involves writing down words in the fundamental group which are not conjugate, but because of certain trace relations, they have the same trace squared with respect to every representation into PSL2(R) (see Section 3). The hyperbolic metrics are of course very special, and it seems reasonable that if γ and γ are as above, there...

This paper proposes a new type of growth rate, called the “poverty equivalent growth rate” (PEGR), which takes into account both the growth rate in mean income and how the benefits of growth are distributed between the poor and the non-poor. The proposed measure satisfies a basic requirement that the proportional reduction in poverty is a monotonically increasing function of the PEGR. Thus, max...

Evidence suggests that binding, or encoding a feature with respect to other features in time and space, can convey cognitive advantages. However, evidence across many kinds of stimuli and paradigms presents a mixed picture, alternatively showing cognitive costs or cognitive advantages associated with maintaining bound representations. We examined memory for colored letters drawn from similar an...

Let (X, d) be a metric space and m ∈ X. Suppose that φ : X×X → R is a nonnegative symmetric function. We define a metric d on X which is equivalent to d. If d is totally bounded, its completion is a compactification of (X, d). As examples, we construct two compactifications of (R, dE), where dE is the Euclidean metric and s ≥ 2. key words. equivalent metric; completion; compactification Mathema...