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Scheme and the Art of Programming

Scheme is the fast track to getting started in programming. Its clear semantics, simple syntax, and interactive environment enable the beginning student to write sophisticated programs after just two brief chapters. As a first introduction to programming, it is an ideal vehicle for learning to reason correctly about computation. Starting from a few fundamental concepts and principles - procedural and syntactic abstractions, recursion, iteration, state, and control - Springer and Friedman develop the ideas and techniques of programming. They include both traditional topics such as numeric and symbolic computation, and also cover current issues such as streams, object-oriented programming and continuations for abstracting control. The presentation is designed for the introductory college student It is more sophisticated and complete than The Little LISPer, but not as advanced as Structure and Interpretation of Computer Programs. Springer and Freidman provide a solid introduction to data abstraction by presenting topics such as list strings, vectors, matrices, sets, relations, and functions. Among the examples used to illustrate object oriented programming are stacks, queues, circular lists, hash tables, and a gas station simulation. George Springer is Professor of Mathematics and Computer Science and Daniel P. Friedman is Professor of Computer Science. Both are at Indiana University, one of the centers for research and development of Scheme.

Cooperative shark tagging study off the Pacific coast of Mexico

The report is concerned solely with the shark-tagging cruise undertaken November 1-December 30, 1964. This study was undertaken to gain knowledge about the migration and growth rates of some eastern Pacific sharks by means of tagging, with a corrolary objective of determining which of the many types of tags are best suited for tagging sharks. Tagging efforts were concentrated on the larger species, especially those of the genus Carcharhinus. These sharks are important as commercially desirable species in Mexico, and as detrimental pests in the American and Mexican tuna, mackerel, and shrimp fisheries. The Bureau of Commercial Fisheries Tuna Resources Laboratory launched a study in 1962 to learn the causes, effects, and possible remedies to the problem of shark attacks on purse seine nets. Mexican biologists are interested in the life history of sharks because of their commercial importance. The goals of this cooperative study, then, is expected to yield information which will be of functional value as well as contributing knowledge to a little-known field of shark biology.

The report is concerned solely with the shark-tagging cruise undertaken November 1-December 30, 1964.

Proceedings of the International Congress of Mathematicians, August 21-29, 1990, Kyoto, Japan