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In a VCR system, a magnetic tape vibrates owing to the head impact action when the magnetic heads collide with and depart from the magnetic tape. These vibrations cause jitter in the reproduced image. It is, however, difficult to evaluate and analyze the head impact action, because the magnetic heads rush into and out of the magnetic tape simultaneously. By measuring the longitudinal vibration of...
The problem of implementing mutual exclusion of N asynchronous parallel processes in a model where the primitive communication mechanism is a test-and-set operation on a shared variable, was the subject of extensive research. While a two-valued variable suffices to insure mutual exclusion, it is shown in [1] that N/2 values are necessary to avoid lockout of any process, and N + 1 values are required...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.