Further Comments on Some Comments on a Paper by Bradley Efron

Some Further Comments

It has recently been observed that a stochastic (in nite degree of freedom) time series with a 1=f power spectrum can exhibit a nite correlation dimension, even for arbitrarily large data sets. [A. R. Osborne and A. Provenzale, Physica D 35, 357 (1989).] I will discuss the relevance of this observation to the practical estimation of dimension from a time series, and in particular I will argue t...

Comments on a Paper by Majorana Concerning

An early paper (1932) by Majorana, that has received but scant attention, is reexamined in light of later developments. This pioneering paper constructs a relativistically invariant theory of arbitrary spin particles, develops and utilizes infinite dimensional representations of the homogeneous Lorentz group, and provides a mass spectrum for elementary particles. The relevance of Majorana’s app...

Comments on Oparin’s Paper

This paper by Oparin on the origin of life, which appeared in Russian in 1924, has been taken to represent the first and principal modern appreciation of the problem. Although it is one of the most often cited papers in the literature on the subject, this is the first time, as far as I can ascertain, that it has appeared in English. The English translation published in 1938 was based on Oparin’...

Some Comments on Qis3

Comments on Paper by Skinner and Zhou

What are the distributional effects of advances in medical care? This important question has been relatively neglected by health economists. I will discuss some of the reasons for this neglect and speculate about possible answers. But first, I will comment on the Skinner-Zhou (S-Z) paper, looking at the questions they address and the answers they provide. Their first question concerns trends in...