The analysis identifies ways in which IAPT services could reduce non-attendance. It also highlights areas of interest for future non-attendance in healthcare research, particularly collaborative care and protocolisation of treatment.

The symmetric Macdonald polynomials are able to be constructed out of the non-symmetric Macdonald polynomials. This allows us to develop the theory of the symmetric Macdonald polynomials by first developing the theory of their non-symmetric counterparts. In taking this approach we are able to obtain new results as well as simpler and more accessible derivations of some of the known fundamental properties of both kinds of polynomials.

No abstract

Over the last thirty years there have been a number of attempts to analyse the distinction between intrinsic and extrinsic properties in terms of the facts about naturalness. This article discusses the three most influential of these attempts, each of which involve David Lewis. These are Lewis's 1983 analysis, his 1986 analysis, and his joint 1998 analysis with Rae Langton.

In their paper "Defining 'Intrinsic"' Rae Langton and David Lewis propose a definition of intrinsicality in terms of modality and naturalness. Their key idea, drawing on earlier work by Jaegwon Kim, was that an intrinsic property is one that is independent of accompaniment, which is to say that P is intrinsic iff the following four conditions are all met:1. It is possible for a lonely object to have PI 2. It is possible for an accompanied object to have P. 3.It is possible for a lonely object to lack P . 4.It is possible for an accompanied object to lack P .Langton and Lewis say that an object is "accompanied" iff it coexists "with some contingent object wholly distinct from itself." (Langton and Lewis 1998, p. 333) A "lonely" or "unaccompanied" object is one that is not accompanied. We will also speak of an object being "accompanied by an F' iff it coexists with some F wholly distinct from itself.This works very nicely for the obvious examples. It works for being cubical, being 50 km from a capital city, and being lonely (intrinsic, extrinsic, extrinsic, respectively). But it doesn't work for every property. Langton and Lewis note that disjunctive properties cause trouble: they give the example of being cubical and lonely, or else non-cubical and accompanied. This property is independent of accompaniment, but intuitively is extrinsic. Other disjunctive properties are intuitively intrinsic (the property of being cubical or spherical, for example), so a new test must be prescribed for them.Thanks for comments on and discussion of this paper go to Toby Handfield,