Giving Medicine to Trees

Preventive medicine: giving patients the hard sell.

Have you ever found yourself busily attending to a patient’s acute problem when all of a sudden a nagging voice inside your head reminds you that you haven’t yet asked the patient about that needed flu shot, Pap smear, tetanus shot or other preventive service? Although health plans and government agencies are often quick to remind us of our preventive failures, many physicians shy away from pre...

Dynamic Trees: A Structured Variational Method Giving Efficient Propagation Rules

Dynamic trees are mixtures of tree struc­ tured belief networks. They solve some of the problems of fixed tree networks at the cost of making exact inference intractable. For this reason approximate methods such as sampling or mean field approaches have been used. However, mean field approximations assume a factorised distribution over node states. Such a distribution seems unlikely in the post...

Giving To Ingrates?*

* We thank David Bruner for his assistance in running these experiments and the University of Calgary Behavioural and Experimental Economics Laboratory for providing the facilities to conduct the experiments. Funding for this project was provided by the Social Sciences and Humanities Research Council (Canada) via a grant to McKee. 2 ABSTRACT Models for voluntary provision of public goods predic...

Giving control to patients.

Giving Meaning to Movement

A growing body of evidence indicates that plant transcription factors move between cells. A recent paper by Nakajima et al. (2001) shows that movement of the SHORTROOT protein provides a mechanism for signaling positional information between cell layers of the root.