We reconsider the issue of large-volume compactifications of the heterotic string in light of the recent discoveries about strongly-coupled string theories. Our conclusion remains firmly negative with respect to classical compactifica-tions of the ten-dimensional field theory, albeit for a new reason: When the internal sixfold becomes large in heterotic… (More)
In this paper, we present parallel algorithms for the coarse grained multicomputer (CGM) and bulk synchronous parallel computer (BSP) for solving two w ell known graph problems: (1) determining whether a graph G is bipartite, and (2) determining whether a bipartite graph G is convex. Our algorithms require O(log p) a n d O(log 2 p) communication rounds,… (More)
Ubiquitin is essential for eukaryotic life and varies in only 3 amino acid positions between yeast and humans. However, recent deep sequencing studies indicate that ubiquitin is highly tolerant to single mutations. We hypothesized that this tolerance would be reduced by chemically induced physiologic perturbations. To test this hypothesis, a class of first… (More)
28 29 Ubiquitination is an essential post-translational regulatory process that can control protein stability, 30 localization, and activity. Ubiquitin is essential for eukaryotic life and is highly conserved, varying in 31 only 3 amino acid positions between yeast and humans. However, recent deep sequencing studies 32 in S. cerevisiae indicate that… (More)
Mexico Brief review of the status of the glueball spectrum in the deformed conifold background. Talk based on work done in collaboration with with R. Herández and X. Amador.
In this paper, we present deterministic parallel algorithms for the coarse grained multicomputer (CGM) and bulk-synchronous parallel computer (BSP) models which s o l v e t he following w ell known graph problems: (1) list ranking, (2) Euler tour construction, (3) computing t he connected components and spanning forest, (4) lowest common ancestor… (More)