Rosalie Steier
Pages 225-226

Programming pearls: thanks, heaps

Jon Bentley
Pages 245-250

Computer science education today: a dialogue

James Martin
Page 251

Excerpts from: An Information Systems Manifesto

James Martin talks with Leonard Kleinrock about the state of the art in data processing—how corporate and MIS managers should manage the new technology, and how computer science education should relate to it. James Martin, Leonard Kleinrock
Pages 252-255

Predicting performance in an introductory computer science course

A group of 269 first-semester freshmen was used to predict both performance in an introductory computer science course and first-semester college grade point average by using information regarding the students' programs and performance … D. F. Butcher, W. A. Muth
Pages 263-268

Computer science in secondary schools: curriculum and teacher certification

Computer science in secondary schools is an area of increasing interest and concern to educators as well as to computer science professionals. Each of the next two reports addresses an issue of major importance regarding computer …
Pages 269-279

A system for interactive viewing of structured documents

An existing typesetting system is tied by bridging software to an existing page-presentation program to effect both hard (typeset) copy and interactive browsing. The typesetting system formats documents for a variety of output … Ian H. Witten, Bob Bramwell
Pages 280-288

An evaluation of retrieval effectiveness for a full-text document-retrieval system

An evaluation of a large, operational full-text document-retrieval system (containing roughly 350,000 pages of text) shows the system to be retrieving less than 20 percent of the documents relevant to a particular search. The … David C. Blair, M. E. Maron
Pages 289-299

Designing for usability: key principles and what designers think

This article is both theoretical and empirical. Theoretically, it describes three principles of system design which we believe must be followed to produce a useful and easy to use computer system. These principles are: early … John D. Gould, Clayton Lewis
Pages 300-311

Pricing computer services: queueing effects

This article studies the effects of queueing delays, and users' related costs, on the management and control of computing resources. It offers a methodology for setting price, utilization, and capacity, taking into account the … Haim Mendelson
Pages 312-321

Technical correspondence

CORPORATE Technical Correspondence
Pages 322-327

Communications of the ACM

Table of Contents

Authors

ACM past President's letters

Viewpoint

ACM forum

From Washington