Walter M. Carlson
Pages 757-758
There are situations in the natural sciences and medicine (e.g. in electron microscopy and X-ray photography) in which it is desirable to estimate the gray levels of a digital picture at the individual points from the sums of …
Richard Gordon, Gabor T. Herman
Pages 759-768
The best of a dozen different methods for compressing map data is illustrated. The choices are generated by encoding data strings—sequence of like codes—by three methods and in four directions. Relationships are developed between …
E. L. Amidon, G. S. Akin
Pages 769-774
In a paper in the November 1970 Communications of the ACM, V.Y. Lum introduced a technique of file indexing named combined indices. This technique permitted decreased retrieval time at the cost of increased storage space. This …
Malcolm C. Harrison
Pages 777-779
A language, BLISS, is described. This language is designed so as to be especially suitable for use in writing production software systems for a specific machine (the PDP-10): compilers, operating systems, etc. Prime design goals …
W. A. Wulf, D. B. Russell, A. N. Habermann
Pages 780-790
The system described herein employs the block concept, and that of global and local variables, in addition to the methods applied in most LISP systems. Also, a new means of list representation is used: “local sequential” for
…
Arnold Rochfeld
Pages 791-795
Let ƒ have
n continuous derivatives on a closed interval [
a, b] and let
L be a linear functional. The attempt is made to approximate
L(ƒ) with
L(
Q) where
Q is a polynomial, approximating ƒ. Algorithms are developed for rapid
L …
Sven-Åke Gustafson
Pages 797-801
The assignment problem, together with Munkres proposed algorithm for its solution in square matrices, is presented first. Then the authors develop an extension of this algorithm which permits a solution for rectangular matrices …
François Bourgeois, Jean-Claude Lassalle
Pages 802-804
This algorithm is a companion to [3] where the theoretical background is described.
F. Bourgeois, J. C. Lassalle
Pages 805-806
This algorithm is a companion to [1] where the theoretical background is described
Sven-Åke Gustafson
Pages 806-807
This algorithm is a companion to [1] where the theoretical background is described
Sven-Åke Gustafson
Page 807
Peter J. Denning
Pages 819-820
In a paper in the November 1970 Communications of the ACM, V.Y. Lum introduced a technique of file indexing named combined indices. This technique permitted decreased retrieval time at the cost of increased storage space. This …
James K. Mullin
Pages 775-776
An examination was made of the experimental results presented by J.J. Kohfeld and G.T. Thompson [1] in their paper on a modification of Nordsieck's method for the numerical solution of ordinary differential equations, using a …
John W. Blumberg, Clinton R. Foulk
Page 796
