There are currently a number of animation researchers that focus on simulating virtual crowds, but few are attempting to simulate virtual populations. Virtual crowd simulations tend to depict a large number of agents walking from one location to another as realistically as possible. The virtual humans in these crowds lack higher purpose. They have a virtual existence, but not a virtual life and...

This chapter describes the developments since 1970 in general purpose integer factoring and highlights the contributions of Peter L. Montgomery. This article appeared as Chapter 5 of the book Topics in Computational Number Theory inspired by Peter L. Montgomery, edited by Joppe W. Bos and Arjen K. Lenstra and published by Cambridge University Press. See www. cambridge.org/9781107109353. There a...

This paper presents a brief review of early learner modelling in Intelligent Tutoring Systems focusing particularly on procedural knowledge representations vs. declarative knowledge representations. It then tracks the paradigm shift from traditional learner modelling, which emphasises knowledge representation, to distributed learner modelling, which focuses on the modelling process. Learner mod...

A central feature of Darwin's theory of natural selection is that it explains the purpose of biological adaptation. Here, I: emphasize the scientific importance of understanding what adaptations are for, in terms of facilitating the derivation of empirically testable predictions; discuss the population genetical basis for Darwin's theory of the purpose of adaptation, with reference to Fisher's ...

NICKEL-BASE ALLOYS have a number of unique properties, or combinations of properties, that allow them to be used in a variety of specialized applications. For example, the high resistivity (resistance to flow of electricity) and heat resistance of nickel-chromium alloys lead to their use as electric resistance heating elements. The soft magnetic properties of nickel-iron alloys are employed in ...

The primary purpose of The Future of Children is to disseminate timely information on major issues related to children’s well-being, with special emphasis on providing objective analysis and evaluation, translating existing knowledge into effective programs and policies, and promoting constructive institutional change. In attempting to achieve these objectives, we are targeting a multidisciplin...

One of the greatest discoveries in medicine was the observation by Dr. Alexander Fleming that the fungus, Penicillium notatum, excreted a substance, subsequently named penicillin, that inhibited growth of bacteria. This discovery was particularly fortuitous because of penicillin's low toxicity to human cells. Penicillin is an exemplary antibiotic because its primary mechanism of action is to in...

Case Law, a regular AJHP section, is intended to provide pharmacists with timely information about recent court decisions that may affect pharmacy practice. Each installment includes pertinent background information, excerpts from the opinion of the court, and brief commentary. The contributing editor for the section is David B. Brushwood, J.D., Professor, Pharmacy Health Care Administration, U...

The purpose of this study, which was carried out during the 1972-73 school year at three parochial schools in the Houston area, was to determine the effectiveness of the Toothkeeper Program, a multimedia program of oral hygiene training carefully developed and packaged to establish effective long-term dental hygiene practice. The study population consisted of students in the first through sixth...