In this talk we present the Fluid Concepts cognitive model, developed by Douglas Hofstadter and his students over the last 30 years. Models in the Fluid Concepts tradition aim to provide a psychologically plausible description of perception and analogy-making, incorporating the parallel processing of bottom-up, data-driven percepts and topdown, expectation-driven hypotheses. We discuss these mo...

Replicated circular openings ranging in size from 0.1 to 1 ha were cleared on a Sierran mixed conifer forest in 1996 at the Blodgett Forest Research Station, California and planted with seedlings of six native species. After 3 years of growth, heights of all trees were measured and analyzed according to species, opening size, and location within the opening. To determine the cause of the edge i...

BERNSTEIN, M. E. H. M. HOWARD. and G. C. CARROLL. 1973. Fluorescence microscopy of Douglas fir foliage epifloia. Can. J. Microbiol. 19: 1129-1130. Douglas fir needles stained with the fluorescent dye, primulin, were observed microscopically using epiillumination with a mercury arc light source. Microorganisms fell into three categories: algae, which exhibited primary fluorescence; actinomycetes...

Abstract. In a recent paper, the authors have constructed a large class of operators in the Cowen-Douglas class Cowen-Douglas class of the unit disc D which are homogeneous with respect to the action of the group Möb – the Möbius group consisting of bi-holomorphic automorphisms of the unit disc D. The associated representation for each of these operators is multiplicity free. Here we give a dif...

A fundamental problem in contemporary string/M theory is to count the number of inequivalent vacua satisfying constraints in a string theory model. This article contains the first rigorous results on the number and distribution of supersymmetric vacua of type IIb string theories compactified on a Calabi-Yau 3-fold X with flux. In particular, complete proofs of the counting formulas in Ashok-Dou...

This paper presents a three-frame matching method for finding the correspondences of comer points. After a two-stage corner detector is applied to each frame to extract a set of corner points as the matching primitives, candidate transition paths, which are formed by three corner points among three consecutive corner sets, are found by utilizing the smoothness constraint of motion due to inerti...

Research Briefs: Singularity Avoidance in Canonical Quantum Gravity, by Viqar Husain 3 What’s new in LIGO, by David Shoemaker . . . . . . . . . . . . . . 5 Conference reports: Scanning New Horizons: GR Beyond 4 dimensions, by Donald Marolf 6 Quantum Gravity in the Americas III, by Jorge Pullin . . . . . . . 9 New Frontiers in Numerical Relativity, by Luciano Rezzolla . . . . 11 Teaching General...

An energy-based approach has been used to investigate the seismic behavior of code-designed asymmetric-plan systems. The systems considered in this investigation had large eccentricities in both directions, were designed for bidirectional earthquake loading, and their responses were computed with both components of ground motion acting simultaneously. The presented results demonstrate that the ...

Douglas-fir beetle (Dendroctonus pseudotsugae Hopkins) (DFB) causes considerable mortality to Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) in western North American forests. We evaluated the use of semiochemical-baited multiple-funnel traps for the protection of small, high-value stands of trees, such as those occurring in campgrounds, rest areas, and small parks when Douglas-fir mortalit...