01 RA_13-00314 Nakamura.indd

Algorithms for the fixed linear crossing number problem

Managing the granularity of constraint-based analyses by rule transformation

This paper proposes a transformation-based approach to design efficient constraint-based analysis at a larger granularity. In this approach, we can design a less or equally precise but more efficient version of an original analysis by rule transformation. To do this, we first define or design an index determination rule for a new sparse analysis based on some syntactic properties, so that it ca...

Distinct domains mediate the early and late functions of the Drosophila ovariantumor proteins

The Drosophila melanogaster ovarian tumor (otu) gene encodes two novel protein isoforms that are required at multiple stages of oogenesis. We have examined the activity of a set of C-terminal truncation Otu proteins as well as a GFP-tagged Otu (Otu-GFP). These experiments have shown that a putative Tudor domain in the central region of the large Otu isoform and a separate domain in the C-termin...

The decay and interruption of interactions between search mechanisms

The attentional mechanisms in the brain responsible for fast pop-out search and slower difficult search have been shown to interact. Even if pop-out search is interrupted, by the addition of extra distractors to an initially simple search display, the partial computations calculated by the mechanisms responsible for pop-out can facilitate subsequent difficult search ("search assistance"; Psycho...

Spike-Associated Fast Contraction of Dendritic Spines in Cultured Hippocampal Neurons

Dendritic spines have long been known to contain contractile elements and have recently been shown to express apparent spontaneous motility. Using high-resolution imaging of dendritic spines of green-fluorescent protein (GFP)-expressing, patch-clamped hippocampal neurons in dissociated culture, we find that bursts of action potentials, evoked by depolarizing current pulses, cause momentary cont...