Kendall’s coefficient of concordance is used traditionally in statistics for measuring agreement between k orderings (k > 2).A new measure of concordance which generalizes Kendall’s coefficient is proposed. The suggested coefficient could be used in situations with missing information or noncomparable outputs. © 2006 Elsevier B.V. All rights reserved.

We consider the Grope filtration of the classical knot concordance group that was introduced in a paper of Cochran, Orr and Teichner. Our main result is that successive quotients at each stage in this filtration have infinite rank. We also establish the analogous result for the Grope filtration of the concordance group of string links consisting of more than one component.

with health care instructions has come in for increasing criticism over the last 20 years. A recent, influential review of research in this area argued for a shift away from compliance to a more negotiated approach to the medical encounter, termed concordance.1 The concordance model views medical interactions as a potential opportunity for both parties to take part in decisions about treatment,...

The role of complementary investments in successful implementation of information technology is now widely accepted. However, for information technology implemented in collaborative arrangements such as supply chain partners, complementary investments may lead to successful implementation yet prove insufficient in creating the expected value. Our research in the implementation of Collaborative ...

exemplificatory, and by concentrating on what is available close at hand, they are inviting others in France to follow them. "Go and do thou likewise" could well be the book's motto, and it will be interesting to see how many adopt it. Even those who consider themselves already sufficiently expert not to require basic instruction should not neglect some of its admonitions, and the traveller to ...

Recently a covariant entropy conjecture has been proposed for dynamical horizons. We apply this conjecture to concordance cosmological models, namely, those cosmological models filled with perfect fluids, in the presence of a positive cosmological constant. As a result, we find this conjecture has a severe constraint power. Not only does this conjecture rule out those cosmological models disfav...

Kearton observed that mutation can change the concordance class of a knot. A close examination of his example reveals that it is of 4–genus 1 and has a mutant of 4–genus 0. The first goal of this paper is to construct examples to show that for any pair of nonnegative integers m and n there is a knot of 4–genus m with a mutant of 4–genus n. A second result of this paper is a crossing change form...