David L. Parnas
Pages 537-538
John R. Rice, Edsger W. Dijkstra
Page 538
Jeffrey L. DeVeber
Page 538
High-priority paralysis is the degradation that can occur in multiprogramming systems when scheduling is based primarily on preassigned priorities. It can be alleviated by modifying the scheduling algorithm to maximize the number …
David F. Stevens
Pages 539-541
A method is discussed by which, after a system malfunction, the contents of disk files can be restored to their status at the time of the failure.
Peter C. Lockemann, W. Dale Knutsen
Page 542
Possible liability for negligence, for other torts (such as slander of credit) and for liability under theories of express or implied warranty (guarantees) are discussed, and legal complications are explained, so that users, …
John F. Banzhaf
Pages 543-549
The computational technique conventionally used for stepwise multiple linear regression requires the storage of an
n ×
n matrix of data. When the number of variables,
n, is large, this requirement taxes the storage capacity of …
Harold J. Breaux
Pages 556-558
The problem of the use of two levels of storage for programs is explored in the context of a LISP system which uses core memory as a buffer for a large virtual memory stored on a drum. Details of timing are given for one particular …
Daniel G. Bobrow, Daniel L. Murphy
Page 558
Sufficient conditions are given for a real matrix to be similar to a positive matrix. This result is used to construct a similarity transformation which, when applied to a particular upper triangular matrix, yields a positive …
C. A. Hall, T. A. Porsching
Pages 559-560
By means of the primitives
insymbol,
outsymbol and
length, as requested by this journal's Algorithms Policy [
Comm. ACM 10 (Nov. 67), 729] a basic set of input-output procedures is defined aiming at quality and flexibility. outreal …
R. de Vogelaere
Pages 567-573
John F. Muth
Page 573
The user public wants standardization and reliable identification of programming languages and related services. One way of achieving these goals is illustrated by the methods adopted for TRAC T-64 interactive language, and its …
Calvin N. Mooers
Pages 574-576
T. B. Steel
Page 576
ASP is a general purpose Associative Data Structure Package in which an arbitrary number of data items and an arbitrary number of the relationships between these data items may be represented. A special picture language is described …
C. A. Lang, J. C. Gray
Pages 550-555
A new programming language facility for symbol manipulation is described. String procedures may be declared and called in a standard ALGOL context. ALGOL procedures can in turn be called by string procedures so that numeric and …
Edward F. Storm
Pages 561-566
