Standing Type

Linear augmented Slater-type orbital method for free standing clusters

We have developed a Scalable Linear Augmented Slater-Type Orbital (LASTO) method for electronic-structure calculations on free-standing atomic clusters. As with other linear methods we solve the Schrödinger equation using a mixed basis set consisting of numerical functions inside atom-centered spheres and matched onto tail functions outside. The tail functions are Slater-type orbitals, which ar...

Mating Type Determination in Tetrahymena: Last Man Standing

Tetrahymena, a single-celled protist, is a eukaryote, just like you and me. But that’s about where the similarity ends. Each Tetrahymena cell contains not one, but two nuclei. The diploid germline nucleus remains transcriptionally silent throughout asexual reproduction, while the somatic nucleus is transcriptionally active. Most especially, Tetrahymena do sex differently from us—there are not t...

Fractional Standing

The standing ovation problem

Over the last decade, research topics such as learning, heterogeneity, networks, diffusion, and externalities, have moved from the fringe to the frontier in the social sciences. In large part this new research agenda has been driven by key tools and ideas emerging from the study of complex adaptive systems. Research is often inspired by simple models that provide a rich domain from which to exp...

Standing Up for Sticklebacks

The morphology of the vertebrate skeleton exhibits tremendous plasticity in evolution, allowing adaptation to a wide variety of ecological niches and lifestyles. Indjeian et al. now uncover how the cis regulation of a gene controls skeletal variation in fish and might have contributed to the evolution of bipedalism in humans.