(5 points) Consider the following binary operations. For each operation, determine if the parallel prefix algorithm can be used to compute prefix sums of a sequence of n operands based on the given binary operation.
(a) op(a, b) = 2a + b
(b) op(a, b) = ab – (a + b)
(c) op(a, b) = Va2 + 62
(d) opla, b) = a × b (x is the vector cross-product in 3D) (Hint: For every ī, ã xã = 0, and axõ=0

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

Have a greater impact on maintenance productivity than any other support group. (clo5) a)-the top management b)-inventory and purchasing c)-sub-contracting d)-cmms

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives