A study of the sphericity in inelastic hadronic reactions at 24 GeV/c with the help of 'principal axis' variables

D. C. Ghosh; S. C. Naha; T. Roy

doi:10.1139/p79-123

A study of the sphericity in inelastic hadronic reactions at 24 GeV/c with the help of 'principal axis' variables

Canadian Journal of Physics ◽

10.1139/p79-123 ◽

1979 ◽

Vol 57 (6) ◽

pp. 864-866 ◽

Cited By ~ 2

Author(s):

D. C. Ghosh ◽

S. C. Naha ◽

T. Roy

Keyword(s):

Principal Axis ◽

Variable Method ◽

Nucleon Interactions

In this paper the sphericity of hadronic reactions is investigated with the help of the 'principal axis' variable method, using our data from p–nucleon interactions at 24 GeV/c. The multiplicity dependence and possible significance of the results are discussed.

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A study of planarity in inelastic hadron–hadron interactions at accelerator energy

Canadian Journal of Physics ◽

10.1139/p80-113 ◽

1980 ◽

Vol 58 (6) ◽

pp. 828-831

Author(s):

Dipak Ghosh

Keyword(s):

Principal Axis ◽

Nucleon Interactions

This paper presents a first investigation of the planarity effect in inelastic hadronic reactions at 70 GeV/c with the help of 'principal axis' variables. It has been observed from the analysis of emulsion data of proton–nucleon interactions at 70 GeV/c that the planarity effect is prominent in the case of low multiplicity events and this effect decreases with the increase of multiplicity.

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Spearman's Law of Diminishing Returns

Journal of Individual Differences ◽

10.1027/1614-0001.27.4.199 ◽

2006 ◽

Vol 27 (4) ◽

pp. 199-207 ◽

Cited By ~ 7

Author(s):

Peter Hartmann

Keyword(s):

Principal Axis ◽

Age Groups ◽

Principal Component ◽

Longitudinal Survey ◽

Male And Female ◽

Two Samples ◽

Diminishing Returns ◽

The One ◽

Armed Services ◽

Principal Axis Factor

Spearman's Law of Diminishing Returns (SLODR) with regard to age was tested in two different databases from the National Longitudinal Survey of Youth. The first database consisted of 6,980 boys and girls aged 12–16 from the 1997 cohort ( NLSY 1997 ). The subjects were tested with a computer-administered adaptive format (CAT) of the Armed Services Vocational Aptitude Battery (ASVAB) consisting of 12 subtests. The second database consisted of 11,448 male and female subjects aged 15–24 from the 1979 cohort ( NLSY 1979 ). These subjects were tested with the older 10-subtest version of the ASVAB. The hypothesis was tested by dividing the sample into Young and Old age groups while keeping IQ fairly constant by a method similar to the one developed and employed by Deary et al. (1996) . The different age groups were subsequently factor-analyzed separately. The eigenvalue of the first principal component (PC1) and the first principal axis factor (PAF1), and the average intercorrelation of the subtests were used as estimates of the g saturation and compared across groups. There were no significant differences in the g saturation across age groups for any of the two samples, thereby pointing to no support for this aspect of Spearman's “Law of Diminishing Returns.”

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