NESC9438 SENSIT,MUSIG,COMSEN

1. NAME OR DESIGNATION OF PROGRAM:  SENSIT, MUSIG, COMSEN.

3. DESCRIPTION OF PROGRAM OR FUNCTION

SENSIT, MUSIG, COMSEN is a set  of three related programs for sensitivity test analysis. SENSIT conducts sensitivity tests. These tests are also known as threshold  tests, LD50 tests, gap tests, drop weight tests, etc. SENSIT interactively instructs the experimenter on the proper level at which to stress the next specimen, based on the results of previous  responses.
MUSIG analyses the results of a sensitivity test to determine the mean and standard deviation of the underlying population by computing maximum likelihood estimates of these parameters. MUSIG also computes likelihood ratio joint confidence regions and individual confidence intervals.
COMSEN compares the result of two sensitivity tests to see if the underlying populations are significantly different. COMSEN provides  an unbiased method of distinguishing between statistical variation of the estimates of the parameters of the population and true population differences.

4. METHOD OF SOLUTION

SENSIT conducts the sensitivity tests according to the Neyer procedure, which has been shown to be up to several times more efficient than standard sensitivity tests such as the Probit, Bruceton (Up-and-Down), Robbins-Monro, and Langlie tests. COMSEN uses the likelihood ratio test to check the hypothesis that the two samples were drawn from the same population.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:

6. TYPICAL RUNNING TIME:

The programs in this package were compiled on a
PC/80386 desktop computer. The following test cases were then executed: MUSIG in 3m20s; COMSEN in 20s.

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS

The likelihood ratio test used in MUSIG provides better confidence intervals than ABSENT, which computes Cramer-Rao lower bounds of the variance.

10. REFERENCES

- SENSIT, MISIG, COMSEN, NESC No.9438, SENSIT, MUSIG, COMSEN
  Flexible Disk Cartridge Description,
  National Energy Software Center Note 90-47, March 7, 1990.

11. MACHINE REQUIREMENTS:

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  MS-DOS.

MS-DOS v3.31 with MS-FORTRAN V5.00 compiler.

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

15. NAME AND ESTABLISHMENT OF AUTHORS

          B. Neyer
          EG&G Mound Applied Technologies

File name	File description	Records
NESC9438_01.001	Information file	105
NESC9438_01.002	COMSEN.FOR COMSEN FORTRAN-77 source	68
NESC9438_01.003	MUSIG.FOR MUSIG FORTRAN-77 source	251
NESC9438_01.004	SENSIT.FOR SENSIT FORTRAN-77 source	317
NESC9438_01.005	SENSUB.FOR Common subroutines source	796
NESC9438_01.006	CLCOM.BAT COMSIG batch file	3
NESC9438_01.007	CLMU.BAT MUSIG batch file	3
NESC9438_01.008	CLSEN.BAT SENSIT batch file	3
NESC9438_01.009	COMSEN.EXE COMSEN executable file	0
NESC9438_01.010	MUSIG.EXE MUSIG executable file	0
NESC9438_01.011	SENSIT.EXE SENSIT executable file	0
NESC9438_01.012	TEST1 MUSIG, COMSEN sample input	21
NESC9438_01.013	TEST1.SEN SENSIT sample output	83
NESC9438_01.014	TEST2 COMSEN sample input	16
NESC9438_01.015	TEST.PRN COMSEN sample output	13
NESC9438_01.016	TEST1.PRN MUSIG sample output	61
NESC9438_01.017	ABSTRACT.DES COMSEN description	12
NESC9438_01.018	ABSTRACT.MUS MUSIG description	14
NESC9438_01.019	ABSTRACT.SEN SENSIT description	13
NESC9438_01.020	README.DES COMSEN installation	25
NESC9438_01.021	README.MUS MUSIG installation	25
NESC9438_01.022	README.SEN SENSIT installation	57
NESC9438_01.023	DOS file-names	22