$[21]$

Question $3$

$3\mathrm{.}1.$ What are time fences? Why are they used?

$3\mathrm{.}2.$ A working MRP system allows a firm to react to even minor changes in production requirements. Discuss both the advantages and disadvantages of having such ability.

$(4)$

$3\mathrm{.}3.$ Explain what is meant by "nervousness" of the MRP schedule. Provide an example. Name two tools that are particularly useful in reducing system nervousness in MRP systems.

$3\mathrm{.}4.$ Describe finite capacity scheduling. How is it more realistic than MRP$?$

$3\mathrm{.}5.$ Mention five ways on how can MRP and JIT be effectively integrated?

$(5)$

$2$

$3\mathrm{.}6.$ Describe the tactics for load smoothing in MRP$.$

$3\mathrm{.}7.$ The MPS calls for $120$ units of Product M$.$ There are currently $30$ of Product M on hand. Each $M$ requires $4$ of Component $N.$ There are $20$ units of $N$ on hand.

$3\mathrm{.}7\mathrm{.}1.$ Calculate the net requirements for $M.$

$(1)$

$3\mathrm{.}7\mathrm{.}2.$ Calculate the gross requirements for $N.$

$(1)$

$3\mathrm{.}7\mathrm{.}3.$ Calculate the net requirements for $N.$

$(1)$

$3\mathrm{.}8.$ The MPS calls for $110$ units of Product A$.$ There are currently $60$ of Product A on hand. Each A requires $2$ of Part B$.$ There are $30$ units of $B$ available.

$3\mathrm{.}8\mathrm{.}1.$ Calculate the net requirements for $A.$

$3\mathrm{.}8\mathrm{.}2.$ Calculate the gross requirements for $B.$

$3\mathrm{.}8\mathrm{.}3.$ Calculate the net requirements for $B.$

$[26]$

Question $4$

$4\mathrm{.}1.$ East Texas Seasonings is preparing to build one processing center to serve its four sources of seasonings. The four source locations are at coordinates shown below. Also, the volume from each source is provided.

$4\mathrm{.}1.$ Calculate the volume$-$weighted center of gravity.

$4\mathrm{.}2.$ Calculate the simple center of gravity $($all cities weighted equally$).$

$4\mathrm{.}3.$ Explain why the two calculations differ.

$(2)$

$\backslash$table$[[,$X$-$coordinate,Y$-$coordinate,Volume$],[$Athens$,$ Texas,$30,40,100],[$Beaumont$,$ Texas,$20,15,400],[$Carthage$,$ Texas,$55,60,150],[$Denton$,$ Texas,$20,70,250]]$

$[9]$