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Communications of the ACM

Table of Contents

Structures of standards-processing organizations in the computer area

A note on range transformations for square root and logarithm

There was the germ of an idea in two previous papers [1, 2] which no one seems to have picked up in almost five years. For certain functions it seems desirable to transform the argument to a short range symmetric about 1.0. I …

A penny-matching program

The logic of a penny-matching program written for the CSX-1 is described.

A computer program for analysis of variance for a 2-level factorial design

Although many computer programs exist for handling analysis of variance, most of them employ the conventional methods described in statistics books for finding the sums of squares.

1410 Fortran edit feature

Another test matrix for determinants and inverses

Self-inverse conversion table

Algorithm 174: a posteriori bounds on a zero of a polynomial

Algorithm 173: assign

Algorithm 175: shuttle sort

Algorithm 176: least squares surface fit

Algorithm 177: least squares solution with constraints

Algorithm 178: direct search

Algorithm 180: error function—large X

Algorithm 179: incomplete beta ratio

Algorithm 181: complementary error function—large X

Algorithm 182: nonrecursive adaptive integration

Algorithm 183: reduction of a symmetric bandmatrix to triple diagonal form

Certification of algorithm 123: real error function, ERF (x)

Certification of algorithm 74: curve fitting with constraints

CORC—the Cornell computing language

CORC is an experimental computing language that was developed at Cornell University to serve the needs of a large and increasing group of computer users whose demands are both limited and intermittent. These are the laymen of …

The external language KLIPA for the URAL-2 digital computer

Incompressible flow network calculations

A general method for the calculation of flows and pressures in fluid flow networks is presented. The method is applicable to computer use.

Disk file sorting

Use of the “building-block” type of approach suggested in [1] is heartily recommended. It has been used by our computer center for over a year with excellent results.

PIP: a photo-interpretive program for the analysis of spark-chamber data

Sorting techniques using an IBM 1401 with a random access storage device are evaluated.

DESCRIPTRAN—automated descriptive geometry

Descriptive geometry consists of procedures originally designed to solve 3-space geometry problems by graphical constructions and measurement instead of by computation. However, in addition to this it unifies and simplifies the …