Vibration modal coordinates or modal participation factors. It may be clearer to understand if formula_72 is written as: Written in this form it can be seen that the vibration at each of the degrees of freedom is just a linear sum of the mode shapes. Furthermore, how much each mode "participates" in the final vibration is defined by q, its modal participation factor. An unrestrained multi-degree of freedom system experiences both rigid-body translation and/or rotation and vibration. The existence of a rigid-body mode results in a zero natural frequency. The corresponding mode shape is called the rigid-body mode. Vibration Vibration is
Cycles per instruction the number of clock cycles it takes to execute an instruction is 1/2 (CPI = 1/2 < 1). For the multi-cycle MIPS, there are five types of instructions: If a program has: then, the CPI is: formula_6 A 400-MHz processor was used to execute a benchmark program with the following instruction mix and clock cycle count: Determine the effective CPI, MIPS (Millions of instructions per second)rate, and execution time for this program. formula_7 formula_8 since: formula_9 and formula_10 formula_11 Therefore: formula_12 Cycles per instruction In computer architecture, cycles per instruction (aka clock cycles per instruction, clocks per instruction, or CPI)