During the school year 1977/78 four computers equipped with LOGO and Turtle Graphics were installed in an elementary school in Brookline, Mass. All sixth grade students in the school had between 20 and 40 hours of ...

We can solve many problems of Energy, Health, Productivity, and Environmental Quality by improving the technology of remote control. This will produce Nuclear Safety and Security, Advances in Mining, Increases in ...

A frame-based reasoning system is extended to deal with procedural attachment. Arguments are given why procedural attachment is needed in a symbolic reasoner. The notion of an infinitary concept is introduced. Conventions ...

Recent studies in psychophysics and neurophysiology suggest that the human visual system utilizes a range of different size or spatial frequency tuned mechanisms in its processing of visual information. It has been ...

The orientation of patches on the surface of an object can be determined from multiple images taken with different illuminations, but from the same viewing position. This method, referred to as photometric stereo, can ...

The shape of a continuous surface can be represented by a collection of surface normals. These normals are like a porcupine's quills. Equivalently, one can use the surface patches on which these normals rest. These ...

An efficient Lagrangian formulation of manipulator dynamics has been developed. The efficiency derives from recurrence relations for the velocities, accelerations, and generalized forces. The number of additions and ...

Assume that the syntax of natural language can be parsed by a left-to-right deterministic mechanism without facilities for parallelism or backup. It will be shown that this "determinism" hypothesis, explored within the ...

The processes involved in vision, manipulation, and spatial reasoning depend greatly on the particular representation of three-dimensional objects used. A novel representation, based on concepts of differential geometry, ...

We report on a partially implemented interactive computer aided design tool for software engineering. A distinguishing characteristic of our project is its concern for the evolutionary character of software systems. ...

In a distributed system where many processors are connected by a networ and communicate using message passing, many users can be allowed to access the same facilities. A public utility is usually an expensive or limited ...

We present an interactive system organized around networks of constraints rather than the programs which manipulate them. We describe a language of hierarchical constraint networks. We describe one method of deriving ...

We present an interactive system organized around networks of constraints rather than the programs which manipulate them. We describe a language of hierarchical constraint networks. We describe one method of deriving ...

This research attempts to formalize the type of causal arguments engineerings employ to understand circuit behavior. A causal argument consists of a sequence of changes to circuit quantities (called events), each of ...

It appears that the development of machine vision may benefit from a detailed understanding of the imaging process. The reflectance map, showing scene radiance as a function of surface gradient, has proved to be helpful ...

In this proposal we describe a technological step towards the realization of INFORMATION PROSTHETICS. Our primary focus is on using rather than making the technology. Specifically, our goal is to transpose for the use ...

This paper describes the evolution of a problem solving model over several generations of computer coaches. Computer coaching is a type of computer assisted instruction in which the coaching program observes the ...

The studies of anatomy and physiology are fundamental ingredients of medical education. This paper identifies six ways in which such functional knowledge serves as the underpinnings for general medical reasoning, and ...

A recent advance by B.F. Logan in the theory of one octave bandpass signals may throw new light on spatial-frequency-tuned channels in early visual information processing.

Distributions of surface orientation and reflectance factor on the surface of an object can be determined from scene radiances observed by a fixed sensor under varying lighting conditions. Such techniques have potential ...