This users manual describes PRECISE - a completely assembled interpretive program for the IBM 7090/7094 which enables the user to carry out arithmetic operations and function generation in multiple precision (accuracy to 28 significant figures). PRECISE operates as a sub-monitor under the IBSYS or DC-IBSYS monitor systems. Appendixes describe how jobs are set up to be run under the PRECISE sub-monitor, and how the system may be expanded to include new subroutines. The program which responds to instructions in the form of plain English sentences or contractions thereof, has provision for handling numbers out of the normal 7090/7094 range. It handles numbers as large as 10 to the 10 to the 9 power. Other features of the program include: free-field input; a work-sheet of 7,500 cells (3x2500 computer words) which can be dimensioned by the user at run time (75 rows by 100 columns, 300 rows by 25 columns, (etc.); solution of systems of linear equations in as many as 85 unknowns; flexible formatting; tape handling facility; and row and column sums. A description of the UOM Multiple Precision Package (SHARE Dist. No. 3081) is included as an appendix. (Author).

The Saturn I vehicle represents a complex ensemble of nine beams joined together. A first vibration analysis based on an equivalent single beam did not agree satisfactorily with the test results of the full scale test vehicle. Comparison of analysis and test results rather dictates that the coupling effects of the nine single beam vibrations can not be neglected. Hence the analysis developed in this paper is based on a model consisting of nine clustered beams. However, the complexity of the system calls for many simplifying assumptions. basic idea of the analysis consists in coupling of the single beam vibrations such that the connections of the beams will be preserved. The method applied to the uncoupled single beams is the well known transfer matrix method. The mentioned coupling of the single beam vibrations leads to a linear homogeneous system of compatibility equations which must be solved during each transfer. Realization of the boundary conditions leads to a frequency curve indicating the coupled frequencies of the system. Finally the coupled mode shapes can be determined. The analysis is programmed on IBM-709-4. Because it consists of simple matrix operations the computer time is short. The results of an analysis of the Saturn I vehicle compare well with test results.

Twelve men were hospitalized with a meningococcal disease at Camp Lejeune, N.C. in the winter of 1970-71. The responsible organism in all but one case was in serogroup C. Carrier rates in the trainee population at risk, studied with nasopharyngeal swab cultures, were equally high in serogroups C and Y. Shedding ability using cough plate counts on Thayer-Martin agar was inversely related to the duration of carrier state. An analysis of cough plate counts by individual serogroups suggests that organism virulence may be an important factor in producing meningococcal disease in this population. The dynamics of meningococcal infection with respect to virulence and shedding ability cannot be appreciated from carrier rate statistics. (Author).