last modified: 27-AUG-1990 | catalog | categories | new | search |

IAEA0975 ACORNS.

ACORNS, Covariance and Correlation Matrix Diagonalization

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1. NAME OR DESIGNATION OF PROGRAM

ACORNS

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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
Program name Package id Status Status date
ACORNS IAEA0975/01 Tested 27-AUG-1990

Machines used:

Package ID Orig. computer Test computer
IAEA0975/01 IBM PC IBM PC
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3. DESCRIPTION OF PROGRAM OR FUNCTION

The program allows the user to verify the different types of covariance/correlation matrices used in the activation neutron spectrometry.

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4. METHODS

The program performs the diagonalization of the input covariance/relative covariance/correlation matrices. The eigen values are then analyzed to determine the rank of the matrices. If the eigen vectors of the pertinent correlation matrix have also been calculated, the program can perform a complete factor analysis (generation of the factor matrix and its rotation in Kaiser's 'varimax' sense to select the origin of the correlations).

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Matrix size is limited to 60 on PDP and to 100 on IBM PC/AT.

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6. TYPICAL RUNNING TIME

The program is run interactively.

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9. STATUS
Package ID Status date Status
IAEA0975/01 27-AUG-1990 Tested at NEADB
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10. REFERENCES
IAEA0975/01, included references:
- E.J. Szondi:
  Update to the Program Package ACORNS.
  INT, Technical University of Budapest (June 1, 1988)
  including extract from INDC(NDS)-192/L pages 66-67 (January 1988)
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
IAEA0975/01 FORTRAN-77
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13. SOFTWARE REQUIREMENTS
  • PDP 11/23: RSX-11M or RSX-11M-PLUS

  • IBM PC: DOS 3.20 or DOS 3.30

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15. NAME AND ESTABLISHMENT OF AUTHORS

E.J. Szondi
Technical University of Budapest
Institute of Nuclear Technics
Muegyetem rkp. 9
H-1521 Budapest

Hungary

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16. MATERIAL AVAILABLE
IAEA0975/01
File name File description Records
IAEA0975_01.001 Information file 70
IAEA0975_01.002 How to Use (original) 83
IAEA0975_01.003 ACORNS source program (FORTRAN) 1137
IAEA0975_01.004 JCL to install on PDP 11/23 4
IAEA0975_01.005 JCL to install on IBM/PC (original) 3
IAEA0975_01.006 Test case input data 12
IAEA0975_01.007 Test case output log 999
IAEA0975_01.008 Input spectrum energy scale 5
IAEA0975_01.009 Input spectrum covariance data 30
IAEA0975_01.010 Input spectrum covariance data 30
IAEA0975_01.011 ACORNS .EXE file 0
IAEA0975_01.012 DOS file-names 11
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17. CATEGORIES
  • O. Experimental Data Processing
  • P. General Mathematical and Computing System Routines

Keywords: activation analysis, correlations, covariance matrices.