The standby Premium Pay rate is determined by Human Resources and forwarded to the civilian payroll office on the SF-50. Hazardous Duty and Environmental Differentials. Environmental Differential Pay (EDP) is paid for exposure to various degrees of hazards, physical hardships and working conditions.
A cusp is a point at which two branches of a curve meet such that the tangents of each branch are equal. The above plot shows the semicubical parabola curve, which has a cusp at the origin. cusp is a point at which two branches of a curve meet such that the tangents of each branch are equal. The above plot shows the semicubical parabola curve, which has a cusp at the origin.
CRSP: ncusip and cusip. The CUSIP that CRSP reports is the so-called ``header CUSIP'', which is the last CUSIP belonging to that PERMNO. A PERMNO may have had several different CUSIPs in the past. These are called the ``names CUSIPs'' (NCUSIPs) by CRSP. Suppose I have data about stocks that only has historical CUSIPs as identifiers.