“[Reasoner] performance can be scary, so much so, that we cannot deploy the technology in our products.” – Michael Shepard. What are typical OWL users to do when their favorite reasoner never seems to return? In this paper, we present our first steps considering this problem. We describe the challenges and our approach, and present a prototype tool to help users identify reasoner performance bo...

Shepard and Chipman’s second order isomorphism describes how the brain may represent the relations in the world. However, a common interpretation of the theory can cause difficulties. The problem originates from the static nature of representations. In an alternative interpretation, I propose that we assign an active role to the internal representations and relations. It turns out that a collec...

To examine the information content of mental representations of three-dimensional objects, 21 participants performed a mental rotation task with the classic Shepard and Metzler (1971) figures. We compared conditions in which the figures were monochromatic, a condition in which they were colored consistently, and a condition in which they were colored inconsistently. Color affected performance o...

We describe an approach to construct approximation basis functions for meshless methods, which is based on the concept of a partition of unity. The approach has the following properties: (i) the grid consists of scattered nodes, (ii) the basis reproduces exactly complete linear polynomials, (iii) only the values of the approximated function at the nodes are used as unknowns, (iv) the constructi...

Several taxonomic issues in the moth families Erebidae and Noctuidae are addressed for Northwestern North America. Drasteria parallelaCrabo & Mustelin andCycnia oregonensis tristisCrabo in the Erebidae and Eudryas brevipennis bonneville Shepard & Crabo, Resapamea diluvius Crabo, Resapamea angelika Crabo, Resapamea mammuthus Crabo, Fishia nigrescens Hammond & Crabo, and Xestia perquiritata orcaC...

RACE NAME PARTY CANVASS VOTES PERCENT U. S. Representative District 1 Louie Gohmert(I) REP 129,398 89.72% Charles F. Parkes, III LIB 14,811 10.27% ----------Race Total 144,209 ---------------------------------------U. S. Representative District 2 Ted Poe(I) REP 130,020 88.61% David W. Smith LIB 16,711 11.38% ----------Race Total 146,731 ---------------------------------------U. S. Representativ...

Shepard's analysis of how shape, motion, and color are perceptually represented can be generalized. Apparent motion and shape may be associated with a group of spatial transformations, accounting for rigid and plastic motion, and perceived object color may be associated with a group of illuminant transformations, accounting for the discriminability of surface-reflectance changes and illuminant ...

Modified Shepard interpolation based on second order Taylor series expansions has proven to be a flexible tool for constructing potential energy surfaces in a range of situations. Extending this to gas-surface dynamics where surface atoms are allowed to move represents a substantial increase in the dimensionality of the problem, reflected in a dramatic increase in the computational cost of the ...

A new formulation of modified Shepard interpolation of potential energy surface data for gas-surface reactions has been developed. The approach has been formulated for monoatomic or polyatomic adsorbates interacting with crystalline solid surfaces of any plane group symmetry. The interpolation obeys the two dimensional translational periodicity and plane group symmetry of the solid surface by c...

This paper describes a catalytic theory that grounds cognition in biology, building on the proposals of (a) Gibson and ecological psychologists concerning the role of invariance and (b) Shepard, Gestaltists and neuroscientists concerning the role of ‘resonating’ neural waves. Enzyme catalysis increases the speed of a molecular reaction, perhaps via a type of wave, a soliton, whose formation, pe...