An I.B.M. Technique for the Computation of ΣX2 and ΣXY

K, Benjamin

doi:10.1007/bf02289794

Cited by 2 publications

(1 citation statement)

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“…Punched-card methods have for the past 20 years been applied actively to problems in scientific research [15], including the solution of partial and total differential equations [11,12], the analysis of complex spectra [1,17], molecular-structure determinations [19], astronomical calculations [5,8], construction and printing of mathematical tables [4,6,10], and statistics [2,3,14,16]. Methods of using the punched-card techniques have been reviewed by Eckert [9].…”

Section: The Punched-card Methodsmentioning

confidence: 99%

The Application of Punched-Card Techniques to Data on the Physical Properties of Single Fibers

Wakeham

Wakelin

1950

Textile Research Journal

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The punched-card method is illustrated, with a description of the procedures used in analyzing the data on single cotton fibers. The samples were tested for 7 properties, from which 5 more were derived by computation. For each of these 12 properties there were prepared a histogram showing the distribution of the property values within variety groups, means and standard deviations for 6 subgroups within each variety, and a three-factor analysis of variance of the means for all varieties and subgroups. The steps in obtaining these results from the punched cards are outlined. Some advantages of this method over the desk-calculator approach are discussed.T HE PURPOSE of this paper is to draw attention to the use of punched-card methods in the evaluation of the physical properties of single textile fibers and to present some results which have been obtained at the laboratories of the Textile Research Institute in applying this procedure to the study of cotton and wool fibers.During the course of the past 12 months, increasing attention has been given to the research on singletextile-fiber properties. The single-fiber work on cotton aims at a better understanding of cotton through a concerted program to evaluate differences in cotton types, the effects imposed upon the physical properties by maturity, and the influence of morphology and treatments on the measured physical properties. Another branch of the cotton program includes research on the progression of physical changes exhibited by cotton during the course of its processing from the bale to the finished cloth. This is a companion project to that in which changes in the degree of polymerization are being followed in cotton from the bale to the cloth by fluidity studies of the cotton cellulose in cupriethylene diamine solutions [18].

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Section: The Punched-card Methodsmentioning

confidence: 99%

The Application of Punched-Card Techniques to Data on the Physical Properties of Single Fibers

Wakeham

Wakelin

1950

Textile Research Journal

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Chapter VIII: Computational Technics

Lorge¹

1945

Review of Educational Research

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MANY of the more significant developments in computational technicoverlap basic contributions to statistical theory. It is difficult, indeed, to make clear cut distinctions between computational processes and statistical innovations. Some of the studies reviewed, therefore, must illustrate both theoretical and computational processes. During the past three years, the articles showing computational development deal primarily with the utilization of machines (particularly those of the International Business Machines Corporation) for mass processing of data, with methods for solving simultaneous equations, with methods of using analysis of variance, and with simplifications and extensions of factor methods. It must be recognized, however, that many contributions to mass methods of handling data developed or extended by the armed services may not be reviewed at present since these methods are classified as "restricted" or "confidential." There is good reason, however, to believe that in the next three years the computational methods developed in the armed services will become available to the research worker.

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An I.B.M. Technique for the Computation of ΣX² and ΣXY

Cited by 2 publications

References 4 publications

The Application of Punched-Card Techniques to Data on the Physical Properties of Single Fibers

The Application of Punched-Card Techniques to Data on the Physical Properties of Single Fibers

Chapter VIII: Computational Technics

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