richard@sequent.UUCP (05/13/84)
Communications of the ACM A monthly publication of the Association for Computing Machinery May 1984 Volume 27, Number 5 ACM HQ: 11 West 42nd Street New York, NY 10036 REPORTS AND ARTICLES 422 The Legal Protection of Computer Software, Robert L. Graham : Legal controversy still surrounds the issue of providing meaningful protection for commercial software. 428 Accomodating Uncertainty in Software Design, Richard V. Giddings : The recognition that most software is domain dependent means that a new approach to software design is in order. 435 Self-Assessment Procedure XIII, G.K.Gupta : A self-assessment procedure dealing with binary search trees and B-trees. COMPUTING PRACTICES 444 A Virtual Memory System for Picture Processing, Ben Tsutom Wada : A system designed specifically for picture processing features blockwise partitioning, specific purpose frame allocation, and nondemand page replacement. 455 An Algorithm for Optimized Boolean Evaluation in Information Management Systems, Gerard D. Finn : In cases where simple data validation techniques are inadequate and optimization policies relatively complex, this algorithm can be used to report errors accurately and unambiguously. RESEARCH CONTRIBUTIONS 466 Evolution and Organizational Information Systems: An Assessment of Nolan's Stage Model, John L. King and Kenneth L. Kraemer : Richard Nolan's "stage" model of organizational computer growth is shown to be "evolutionistic" and to suffer problems inherent in such theories. 476 A Critique of the Stage Hypothesis: Theory and Empirical Evidence, Izak Benbasat, Albert S. Dexter, Donald H. Drury, Robert C. Goldstein : The empirical evidence from seven studies does not support the validity of the stage hypothesis as a model of organizational computing growth. 486 Design of the S System for Data Analysis, Richard A. Becker and John M. Chambers : A language for interactive data analysis and graphical output, S differs sharply from other statistical systems in its emphasis on human effectiveness as the most important design criteria. DEPARTMENTS 407 Authors 500 Professional Activities 408 ACM President's Letter 503 Calendar of Events 411 ACM Forum 509 Call for Papers 413 Time is Running Out - Vote on 510 Candidates for the the Constitutional Amendment 1984 Election 414 From Washington 517 Official ACM News 416 Programming Pearls 520 ACM News 496 Technical Coorespondence ___________________________________________________________________________ May the Octogon be with you... ...!sequent!richard