The following jobs are waiting to be processed at the same machine center. Jobs are logged...

The following jobs are waiting to be processed at the same machine center. Jobs are logged as they arrive:

A	313	8
B	312	16
C	325	40
D	314	5
E	314	3

In what sequence would the jobs be ranked according to the following decision rules: (a) FCFS, (b) EDD, (c) SPT, and (d) LPT? Which decision is best and why?

All dates are specified as manufacturing planning calendar days. Assume that all jobs arrive on day 275.

Expert Solution

keosha answered 2 months ago

The following jobs are waiting to be processed at Rick Solano's machine center. Solano's machine center...

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 to be scheduled today, which is day 241(day 241 is a work day). Job names refer to names of clients and contract numbers. Compute all times based on initiating work on day 241. Job Date Job Received Due Date Duration (days)...

The following jobs are waiting to be processed at Rick? Solano's machine center.? Solano's machine center...

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 to be scheduled? today, which is day 241 ?(day 241 is a work? day). Job names refer to names of clients and contract numbers. Compute all times based on initiating work on day 241. (Job) (Date Job Received) (Due Date Duration...

Evan Schwartz has six jobs waiting to be processed through his machine. Processing time (in days)...

Evan Schwartz has six jobs waiting to be processed through his machine. Processing time (in days) and due date information for each job are as follows: Job Processing Time Due Date A B C D E F 2 1 5 3 4 7 3 2 12 4 8 11 Sequence the jobs by FCFS, SPT, SLACK, and DDATE. Calculate the mean flow time and mean tardiness of the six jobs under each sequencing rule. Which rule would you recommend?

The following set of seven jobs is to be processed through two work centers at George?...

The following set of seven jobs is to be processed through two work centers at George? Heinrich's printing company. The sequence is first? printing, then binding. Processing time at each of the work centers is shown in the following? table: Job Printing (hours) Binding(hours) T 12 4 U 8 11 V 5 14 W 6 2 X 9 10 Y 3 1 Z 7 13 a-b) Using? Johnson's rule for? 2-machine scheduling, the sequence? is: Scheduled Order Job 1.____ 2....

Which of the following will increase the waiting time in a call center in which the...

Which of the following will increase the waiting time in a call center in which the incoming call gets assigned to the first available server? A. Add more servers B. Implement the shortest processing time first priority rule C. Decrease the variability in servers D. Increase the average service/processing time E. Decrease the interarrival time Both C and D Both D and E C, D, and E

Q4 (a) A manufacturer has the following jobs waiting on a single work centre. The firm...

Q4 (a) A manufacturer has the following jobs waiting on a single work centre. The firm has not decided which dispatching rule to apply in order to prioritize the jobs and fix them into the schedule. Processing time and due date for each job are in the Table 4 below. Recommend the best job sequence to the manufacturer using THREE (3) dispatching rules scenario analysis. Table 4: Jobs Information Jobs Information Processing Time (days) Due Date (days) Job 1 3.25...

The amount of time that a truck spends in waiting at the distribution center for unloading...

The amount of time that a truck spends in waiting at the distribution center for unloading is a random variable with a mean of 30 minutes and a standard deviation of 20 minutes. Suppose that a random sample of 9 trucks is observed. Find the probability that the average waiting time of trucks is: (1) Less than 20 minutes (2) Between 20 and 40 minutes

Six jobs are to be processed through a two-step operation. The first operation involves sanding, and...

Six jobs are to be processed through a two-step operation. The first operation involves sanding, and the second involves painting. Processing times are as following table. Job Operation 1 (Hours) Operation 2 (Hours) A 10 5 B 7 4 C 5 7 D 3 8 E 2 6 F 4 3 Determine the sequence that will minimize the total completion time for the jobs using Johnson’s rule. Illustrate graphically the throughput time and idle time at the two operations by...

Six jobs are to be processed through a? two-step operation. The first operation involves? sanding, and...

Six jobs are to be processed through a? two-step operation. The first operation involves? sanding, and the second involves painting. Processing times are as? follows: Job Operation 1 (hours) Operation 2 (hours) A 4 8 B 10 5 C 3 11 D 14 14 E 6 1 F 7 12 A) Using? Johnson's rule for? 2-machine scheduling, the sequence? is: b) For the schedule developed using? Johnson's rule, the total length of time taken to complete the six jobs? (including...

Given the following information concerning jobs awaiting processing at a single work center, what is the...

Given the following information concerning jobs awaiting processing at a single work center, what is the processing sequence using the critical ratio (CR) rule? JOB Processing time at this operation (hrs) at this operation (hrs.) Processing time remaining at other operations (hrs.) Final due date ( hrs.) D 4 4 9 A 8 6 38 O 6 10 24 I 3 8 20 N 5 14 32

Question