The following jobs are waiting to be processed at Rick Solano's machine center. Solano's machine center has a relatively long backlog and sets a fresh schedule every 2 weeks, which does not disturb earlier schedules. Below are the jobs received during the previous 2 weeks. They are ready to be scheduled today, which is day 241 (day 241 is a work day). Job names refer to names of clients and contract numbers.

JOB	DATE JOB RECEIVED	PRODUCTION DAYS NEEDED	DATE JOB DUE
BR-02	228	15	300
CX-01	225	25	270
DE-06	230	35	320
RG-05	235	40	360
SY-11	231	30	310

Which dispatching rule has the best score for utilization metric?

DISPATCHING RULE	JOB SEQUENCE	FLOW TIME	UTILIZATION METRIC	AVERAGE NUMBER OF JOBS	AVERAGE LATENESS
EDD
SPT
LPT
FCFS

The following jobs are waiting to be processed at Rick Solano's machine center. Solano's machine center has a relatively long backlog and sets a fresh schedule every 2 weeks, which does not disturb earlier schedules. Below are the jobs received during the previous 2 weeks. They are ready to be scheduled today, which is day 241 (day 241 is a work day). Job names refer to names of clients and contract numbers.

Which dispatching rule would you select? Support your decision.

The product design group of lyengar Electric Supplies. Inc., has determined that it needs to design a new series of switches. It must decide on one of three design strategies. The market forecast is for 200,000 units. The better and more sophisticated the design strategy and the more time spent on value engineering, the less will be the variable cost. The chief of engineering design. Dr. W. L. Berry, has decided that the following costs are a good estimate of the initial and variable costs connected with each of the three strategies:

Subcontract: A medium-cost approach using a good outside design staff. This approach would have a fixed cost of $\$ 65,000$ and variable-coet probabilities of $.7$ of $\$ .45,2$ of $5.40$, and . . of $\$ .35$.

The following jobs are waiting to be processed at Rick Solano's machine center. Solano's machine center has a relatively long backlog and sets a fresh schedule every 2 weeks, which does not disturb earlier schedules. Below are the jobs received during the previous 2 weeks. They are ready to be scheduled today, which is day 241 (day 241 is a work day). Job names refer to names of clients and contract numbers.

Which dispatching rule has the best score for flow time?

J.C. Howard's medical testing company in Kansas wishes to assign a set of jobs to a set of machines. The following table provides the production data of each machine when performing the specific job:

What is the total production of your assignments?

The volume V of a right circular cone of radius r and height h is given by

$$V = \frac { 1 } { 3 } \pi r ^ { 2 } h$$

. Suppose that the height decreases from 20 in to 19.95 in and the radius increases from 4 in to 4.05 in. Compare the change in volume of the cone with an approximation of this change using a total differential.

Kimpel Products makes pizza ovens for commercial use. James Kimpel, CEO, is contemplating producing smaller ovens for use in high school and college kitchens. The activities necessary to build an experimental model and related data are given in the following table:

Crash this project to 7 weeks ( which is the maximum it can be crashed) at the least cost.

A chain of home health care firms in Louisiana needs to locate a central office from which to conduct internal audits and other periodic reviews of its facilities. These facilities are scattered throughout the state, as detailed in the following table. Each site, except for Houma, will be visited three times each year by a team of workers, who will drive from the central office to the site. Houma will be visited five times a year. Which coordinates represent a good central location for this office? What other factors might influence the office location decision? Where would you place this office? Explain.

Which shop-floor scheduling rule would you prefer to apply if you were the leader of the only team of experts charged with defusing several time bombs scattered throughout your building? You can see the bombs; they are of different types. You can tell how long each one will take to defuse. Discuss.

J.C. Howard's medical testing company in Kansas wishes to assign a set of jobs to a set of machines. The following table provides the production data of each machine when performing the specific job:

Determine the assignment of jobs to machines that will maximize total production.

The catering manager of La Vista Hotel, Lisa Ferguson, is disturbed by the amount of silverware she is losing every week. Last Friday night, when her crew tried to set up for a banquet for 500 people, they did not have enough knives. She decides she needs to order some more silverware, but wants to take advantage of any quantity discounts her vendor will offer. For a small order ( 2,000 or fewer pieces ), her vendor quotes a price of $1.80 piece. If she orders 2,001-5,000 pieces, the price drops to$1.60/piece. 5,001-10,000 pieces brings the price to $1.40/piece, and 10,001 and above reduces the price to$1.25. Lisa's order costs are $200 per order, her annual holding costs are 5%, and the annual demand is 45,000 pieces. For the best option: What is the total annual cost, including ordering, holding, and purchasing the silverware?

Coleman Rich, Ltd., has received the following orders:

The entire fabrication for these units is scheduled on one machine. There are 2,250 usable minutes in a week, and each unit will take 65 minutes to complete. Develop a capacity plan, using lot splitting, for the 10 -week time period.

M. de Koster, of Rene Enterprises, has the master production plan shown below:

Lead time $=1$ period; setup cost $=\$ 200$; holding cost $=\$ 10$ per week; stockout cost $=\$ 10$ per week. Your job is to develop an ordering plan and costs for:

Which plan has the lowest cost?

M. de Koster, of Rene Enterprises, has the master production plan shown below:

Lead time = 1 period; setup cost = $200; holding cost =$10 per week; stockout cost = $10 per week. Your job is to develop an ordering plan and costs EOQ.