Evolving a Peptide: Library Platforms and Diversification Strategies

Evolving Phytoplankton Stoichiometry Fueled Diversification

The availability of nutrients and the quantity and quality of food at the base of food webs have largely been ignored in discussions of the Phanerozoic record of biodiversity. We examine the role of nutrient availability and phytoplankton stoichiometry (the relative proportions of inorganic nutrients to carbon) in the diversification of the marine biosphere. Nutrient availability and phytoplank...

Evolving academic library specialties

Evolving Strategies and Implications

In this issue of Circulation, Detre et all review the incidence and outcome of periprocedural coronary artery occlusion following percutaneous transluminal coronary angioplasty (PTCA) in the second phase of the National Heart, Lung, and Blood Institute's (NHLBI) PTCA Registry. This registry examined the results in 1,801 patients managed during 1985-1986 with an initial PTCA not in the setting o...

Evolving a Library of Artistic Scene Descriptors

We describe the building of a library of 10,000 distinct abstract art images, and how these can be interpreted as describing the placement of objects in a scene for generative painting projects. Building the library to contain only markedly distinct images necessitated a machine learning approach, whereby two decision trees were derived to predict visual similarity in pairs of images. The first...

International Diversification Strategies

We estimate a model with countryand industry-specific shocks that extends the dummy variable model used in the portfolio diversification literature by relaxing the restriction that all stocks with exposure to a given shock have the same exposure to that shock. We find that: i) This restriction is strongly rejected by the data. ii) Many industry betas are negative, while almost all country betas...