The dr package for R for dimension reduction regression was first documented in Weisberg (2002). This is a revision of that article, to correspond to version 3.0.0 of dr for R added to CRAN (cran.r-project.org) in Fall 2007. Regression is the study of the dependence of a response variable y on a collection of p predictors collected in x. In dimension reduction regression, we seek to find a few ...

follows with a wonderful piece on the cataloguing of the monstrous from the cabinet to the collections and representations of embryological monsters. Roy Porter, too, fills in the details for the eighteenth century. His brilliant essay on "monsters and the mad" fills in the conceptual gap which Zapperi leaves between these two categories. He shows how both categories reinforce each other on the...

Derzhavin (1896) described the first recorded case, with a vascularized band extending from the whole width of the optic disc to the periphery of the retina, which at first formed a retinal fold and then broke free from the retina as a band extending forwards into the vitreous. It has been suggested that this represented remnants of the hyaloid artery. Grondahl (1963) has reported a child with ...

Polarization profiles of several hundred pulsars have been published recently (eg. Gould & Lyne 1998, GL98; Weisberg et al. 1999). In this report, we summarize the characteristics of circular and high linear polarizations of pulsar profiles, based on all previously published data. Han et al. (1998) systematically studied the circular polarization of pulsar profiles. They found that circular pol...

Recent research has changed how developmental psychologists understand counterfactual thinking or thoughts of what might have been. Evidence suggests that counterfactual thinking develops over an extended period into at least middle childhood, depends on domain-general processes including executive function and language, and dissociates from counterfactual emotions such as regret. In this artic...

Shortly before the end of 2007 it’s a great pleasure for me to welcome you to the third and Christmas issue of R News. Also, it is the last issue for me as editorial board member and before John Fox takes over as editor-in-chief, I would like to thank Doug Bates, Paul Murrell, John Fox and Vince Carey whom I had the pleasure to work with during the last three years. It is amazing to see how man...

Chronic activation of macrophage-mediated inflammatory signals in insulin-sensitive metabolic tissues is thought to be one of the causes of insulin resistance—one of the hallmarks of the metabolic syndrome. However, the mechanisms, components and dynamics by which this inflammatory response is spatially and temporally regulated are not completely understood. In this issue of The EMBO Journal, O...

It is conceivable, therefore, that the " enhancement " postulated by Floyd et al. (1966) is provided by the action of these two hormones. Turner (1968) has already shown in vitro that the insulinotropic effect of the amino-acid leucine is augmented by pancreozymin, while Ohneda et al. (1968) have recently reported that pancreozymin augments the insulinotropic effect of amino-acids in the dog. F...

and The Whitaker Foundation. The authors also wish to thank Rob Hardy and Leonard Lee of MIT, and Limor Weisberg for their efforts in programming and designing many of the web sites that comprise this research. We thank Professors Hyun Shin, Robert Zeithammer, and Andrew Ainslie for their helpful modeling insights and Jeremy Dann and Craig Boreth for their editorial suggestions. Abstract Identi...

We investigate the general properties of general Bayesian learning, where “general Bayesian learning” means inferring a state from another that is regarded as evidence, and where the inference is conditionalizing the evidence using the conditional expectation determined by a reference probability measure representing the background subjective degrees of belief of a Bayesian Agent performing the...