The present study was designed to investigate the nature of motor information processing in the intertrial intervals of a discrete motor task. In Experiment 1, the subjects were given the task of grasping the dynamometer with an intensity yielding a value as close as possible to the target value (40% of the subject's maximum grasping power). The exercise session consisted of 5 trials without Kn...

The nearly neutral theory, which proposes that most mutations are deleterious or close to neutral, predicts that the ratio of nonsynonymous over synonymous substitution rates (dN/dS), and potentially also the ratio of radical over conservative amino acid replacement rates (Kr/Kc), are negatively correlated with effective population size. Previous empirical tests, using life-history traits (LHT)...

In this paper we introduce a new ^-theory denoted by KR which is, in a sense, a mixture of these three. Our definition is motivated partly by analogy with real algebraic geometry and partly by the theory of real elliptic operators. In fact, for a thorough treatment of the index problem for real elliptic operators, our KR-theory is essential. On the other hand, from the purely topological point ...

The World Wide Web opens up new opportunities for the use of knowledge representation: a formal description of the semantic content of Web pages can allow better processing by computational agents. Further, the naming scheme of the Web, using Universal Resource Indicators, allows KR systems to avoid the ambiguities of natural language and to allow linking between semantic documents. These capab...

The pH profiles of the apparent biomolecular rate constants for the reaction f free EO with [2-'H]and [22H]phenylalanine (evaluated as (kr)H and (kr)H*, respectively, from rapid kinetic measurements and as the equivalent steady state coefficients ( & l ) ~ and (+I-')"*) show that k , = k', k2 >> k-' << k2* and that the ionization controlled by K', (= kL,/k,) is at virtual equilibrium. The expre...

We consider the structure of Kr-free graphs with large minimum degree, and show that such graphs with minimum degree δ > (2r − 5)n/(2r − 3) are homomorphic to the join Kr−3 ∨ H where H is a triangle-free graph. In particular this allows us to generalize results from triangle-free graphs and show that Kr-free graphs with such minimum degree have chromatic number at most r+ 1. We also consider th...

We present an analysis of Kr I λ1236 line measurements from 50 sight lines in the Hubble Space Telescope Space Telescope Imaging Spectrograph and Goddard High Resolution Spectrograph data archives that have sufficiently high resolution and signal-to-noise ratio to permit reliable krypton-to-hydrogen abundance ratio determinations. The distribution of Kr/H ratios in this sample is consistent wit...

The neighbourhood of every vertex of a triangle-free graph forms an independent set. In 1981, Janos Pach characterized those triangle-free graphs where every independent set belongs to the neighbourhood of a vertex. I will present alternative characterizations and indicate some applications of this result. There are two natural ways to generalize this problem to Kr-free graphs: Characterize tho...