Most knowledge representation languages are based on classes and taxonomic relationships between classes. Taxonomic hierarchies without defaults or exceptions are semantically equivalent to a collection of formulas in first order predicate calculus. Although designers of knowledge representation languages often express…

This paper describes a method for limiting vibration in flexible systems by shaping the system inputs. Unlike most previous attempts at input shaping, this method does not require an extensive system model or lengthy numerical computation; only knowledge of the…

Explanation-based learning occurs when something useful is retained from an explanation, usually an account of how some particular problem can be solved given a sound theory. Many real-world explanations are not based on sound theory, however, and wrong things may…

The Bifurcation Interpreter is a computer program that autonomously explores the steady-state orbits of one-parameter families of periodically- driven oscillators. To report its findings, the Interpreter generates schematic diagrams and English text descriptions similar to those appearing in the science…

Knowledge offactorsaffecting access topost secondary education isgrowing, but we know much less about influences shaping patterns of study within higher education. This paper explores the impact of gender and parental education on student decisions to study part-time orfull-time, to choose…

En este trabajo se presenta la metodología seguida en el análisis de morteros procedentes de dos castillos medievales, el de Camargo (siglo VIH) y el del Torrejón de Las Henesirosas (siglo XIII), ambos en Cantabria, con objeto de aportar información…

This thesis investigates Plato's analogy between virtue and crafts, a comparison made extensively in the early dialogues. I first detail the model of technical knowledge that Plato uses as a paradigm of knowledge. An application of this model shows the…

This study surveyed the sexual behaviors and knowledge of Acquired Immunodeficiency Syndrome (AIDS) among 117 undergraduate students from McGill University, Montreal. The sample consisted of 32 men and 85 women ranging from 18 up to 24 years of age. The…

This research examined the influence of ability, prior knowledge and knowledge of text structure on expository history text corpora comprehension using a quasi-representative research paradigm. Sixty grade eight students participated in two history units. Hypotheses that ability, prior knowledge and…

This thesis presents a development environment for Design Expert Systems that features a new language where the roles of knowledge and the way it is brought to bear are predefined by the solution method., The language also allows knowledge to…