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time-invariant system |
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time-invariant system [′tīm in‚ver·ē·ənt ‚sis·təm] (control systems) A system in which all quantities governing the system's behavior remain constant with time, so that the system's response to a given input does not depend on the time it is applied. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Time-dependent counting experiments were conducted on a fixed sample spot in order to demonstrate the time invariant x-ray intensity at an accelerating potential of 20 kV, a probe current of 100 nA, and beam diameters of approximately i [mu]m (i. The lack of a seasonal pattern indoors in the presence of significant seasonal variation in outdoor airborne endotoxin level described in the previous study (31) may suggest that indoor sources are important and that indoor airborne endotoxin level is driven by time invariant indoor factors. In practice, if the IRF changes only slowly, then it becomes possible to treat segments of time as being time invariant and to use a single IRF during that time period. |
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