This paper describes a method to detect and resolve zero pronouns in Japanese text. We detect zero pronouns by case analysis based on automatically constructed case frames, and select their appropriate antecedents based on similarity to examples in the case frames. We also introduce structural preference of antecedents to precisely capture the tendency that a zero pronoun has its antecedent in ...

A theoretical relationship between isolation by distance or spatial genetic structure (SGS) and seed and pollen dispersal is tested using extensive spatial-temporal simulations. Although for animals Wright's neighbourhood size N(e) = 4pisigma(2)(t) has been ascertained also, where sigma(2)(t) is the axial variance of distances between parents and offspring, and it was recently confirmed that N(...

We review the developments of a recently proposed approach to study integrable theories in any dimension. The basic idea consists in generalizing the zero curvature representation for two-dimensional integrable models to space-times of dimension d + 1 by the introduction of a d-form connection. The method has been used to study several theories of physical interest, like self-dual Yang-Mills th...

The fast digital shearlet transform (FDST) was recently introduced as a means to analyze natural images efficiently, owing to the fact that those are typically governed by cartoon-like structures. In this paper, we introduce and discuss a first-order hybrid sigma-delta quantization algorithm for coarsely quantizing the shearlet coefficients generated by the FDST. Radial oversampling in the freq...

We construct and investigate smooth orientable surfaces in su(N) algebras. The structural equations of surfaces associated with Grassmannian sigma models on Minkowski space are studied using moving frames adapted to the surfaces. The first and second fundamental forms of these surfaces as well as the relations between them as expressed in the Gauss–Weingarten and Gauss–Codazzi–Ricci equations a...

This talk is based on a recent paper 1 of ours. In an attempt to understand three-dimensional conformal field theories, we study in detail one such example – the large N limit of the O(N) non-linear sigma model at its non-trivial fixed point – in the zeta function regularization. We study this on various three-dimensional manifolds of constant curvature of the kind Σ × R (Σ = S 1 × S 1 , S 2 , ...

We present a novel semiconductor structure in which 0D polaritons coexist with 2D microcavity polaritons. Spatial trapping of the 2D microcavity polaritons results from the confinement of their photonic part in a potential well, consisting of an adjustable thickness variation of the spacer layer. This original technique allows to create polaritonic boxes of any size and shape. Strong coupling r...

Pick a flower on earth and you move the farthest star.-Paul Dirac Dedicado a mis abuelos, a mis padres, y a mi amor Ryan C. Price ! v The simple beauty of a quantum system lies in its potentiality. Reality is waiting to occur, waiting for the system to evolve. 1 I have been successful at Georgia Tech due to the generosity of many people. I would like to sincerely thank the members of my committ...

A sigma model action with N=2 D=6 superspace variables is constructed for the Type II superstring compactified to six curved dimensions with Ramond-Ramond flux. The action can be quantized since the sigma model is linear when the six-dimensional spacetime is flat. When the six-dimensional spacetime is AdS3 ×S , the action reduces to one found earlier with Vafa and Witten.

This paper is a natural continuation of Abbott et al. (2000) further generalizing the Buchberger-Möller algorithm to zero-dimensional schemes in both affine and projective spaces. We also introduce a new, general way of viewing the problems which can be solved by the algorithm: an approach which looks to be readily applicable in several areas. Implementation issues are also addressed, especiall...