We analyze the behaviour of heterotic squashed-Wess–Zumino–Witten backgrounds under renormalization-group flow. The flows we consider are driven by perturbation creating extra gauge fluxes. We show how the conformal point acts as an attractor from both the target-space and world-sheet points of view. We also address the question of instabilities created by the presence of closed time-like curve...

In a previous contribution to this journal (Froese et al. 2012), we refuted criticism of a simple method (Froese and Kesner-Reyes 2002) that derives information about the status of global stocks from global catch data. This method assumes that, for a given stock, the ratio of current catches to previous maximum catches (Cmax) is indicative of the likely current exploitation status of the stock....

Grapheme-phoneme correspondences constitute the essence of alphabetical code. Nevertheless,increasing numbers of studies showed the importance of orthography-morphemecorrespondences. These two types of correspondences might be taken into account whenmodelling reading development. Moreover, whatever the code concerned, it is likely that twotypes of processes are involved in learn...

1 Multicut We will now study an example of randomized rounding, where the geometry of the solution space is used in constructing the approximation algorithm. The multicut probem has as input an undirected graph G = (V,E), nonnegative costs associated with each edge (i.e. c : E → Q) and k terminal pairs (s1, t1), (s2, t2), . . ., (sk, tk). A multicut is a subset of edges, F , such that removing ...

This report profiles the keynote talks given at ISMB03 in Brisbane, Australia by Ron Shamir, David Haussler, John Mattick, Yoshihide Hayashizaki, Sydney Brenner, the Overton Prize winner, Jim Kent, and the ISCB Senior Accomplishment Awardee, David Sankov.