MOTIVATION spacodiR is a cross-platform package, written for the R environment, for studying partitioning of diversity among natural communities in space and time. Complementing and extending existing software, spacodiR allows for hypothesis testing and parameter estimation in studying spatial structuring of species-, phylogenetic- and trait diversities. AVAILABILITY Integrated with other sof...

Mitochondrial and nuclear DNA diversities were determined for two Chocó-speaking Amerind populations, the Emberá and Wounan, sampled widely across their geographic range in eastern Panamá. These data were compared with mitochondrial and nuclear diversities determined here and previously for neighboring Chibcha-speaking Ngöbé and Kuna populations. Chocoan groups exhibited mitochondrial diversity...

Many Internet global commercial services were originally initiated in the United States and later exported to other countries, continents, and cultures. By analyzing content and form characteristics of two leading portal sites—MSN and Yahoo!—on 33 and 23 (respectively) of their local country homepages in a comparative and longitudinal study over a period of six months, this study addresses two ...

Protein engineering uses oligonucleotide-directed mutagenesis to modify DNA sequences through a two-step process of hybridization and enzymatic synthesis. Inefficient reactions confound attempts to introduce mutations, especially for the construction of vast combinatorial protein libraries. This paper applied computational approaches to the problem of inefficient mutagenesis. Several results im...

Although once considered to be at the margins of psychological science, the study of culture has blossomed into one of the most important areas of research today. Studies involving cultural variables appear more frequently than ever before in mainstream journals in developmental, clinical, personality, and social psychology, aswell as in specialty journals such as the Journal of Cross-Cultural ...