Kindly give me a detailed response.Please make the solution a manual for me and not a software solution if possible.Thank you very much. 6-64. (Job shop scheduling) Three jobs, J1, J2, and J3, are processed on threemachines, M1, M2, and M3, according to the following sequences (processingtimes are shown in parentheses):J1: M3(3)M1(4) - M2(6)J2: M2(1)M3(5) – M2(9)J3: M3(8)M2(8) – M1(7)The order in which the jobs are processed on the different machines ispredetermined as:M1: J1 J2 J3M2: J2J3 - J1M3: J3J1 - J2a. Represent the problem as a CPM network for which the critical pathdetermines the make span of all three jobs.b. Use the critical path calculations to develop the scheduling of the jobs(Gantt chart), assuming that each operation is scheduled at its earlieststart time.

CPM stands for Critical Path Method. It's a project management technique used to determine the…

Answered: 6-64. (Job shop scheduling) Three jobs,…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter12: Queueing Models

Section: Chapter Questions

Problem 59P

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The ClickClock corporation produces clocks with six stations. Each station is manned by a human worker, who do the following tasks: These workers get paid $ 10 an hour. Ignore any Station Task Sequence Processing Time (secs) Task Heat-stake lens to bezel Inspect bezel Clean switch holes Install set switch in bezel Total time for A Check switch travel Clean inside bezel Install module in bezel Total time for B Install battery clip in module Heat-stake battery clip in module Install two batteries in module Check switch 14 2 26 A 3 10 Preparation 1 4 18 68 23 B 6 12 Preparation 2 7 25 60 8 20 9 20 Battery 10 22 Installation 11 8. Total time for C 70 Install band Inspect band Total time for D Cosmetic inspection Final test D 12 45 Band 13 13 Installation 58 E 14 4 Packaging 15 71 Preparation Total time for E 75 Place watch and cuff in display box Place cover in display box base 16 20 17 14 Watch 18 Place owner's manual and box into tub 30 packaging Total time for F 64
67. The number of resources requested by a process : a. must always be less than the total number of resources available in the system b. must always be equal to the total number of resources available in the system c. must not exceed the total number of resources available in the system d. must exceed the total number of resources available in the system
Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is contained in the table below. Each job requires work center Alpha before work center Beta. According to Johnson's rule, which job should be scheduled first in the sequence? O A. V OB. U O C. R OD. S O E. T Job R S T Alpha 20 23 50 26 55 Beta 34 35 20 26 75
Consider the following tasks that must be assigned to four workers on a conveyor-paced assembly line (i.e., a machine-paced line flow). Each worker must perform at least one task. There exists unlimited demand unless stated otherwise. Time to Complete Task (seconds): Task 1: 30 Task 2: 25 Task 3: 15 Task 4: 20 Task 5: 15 Task 6: 20 Task 7: 50 Task 8: 15 Task 9: 20 Task 10: 25 Task 11: 15 Task 12: 20 The current conveyor-paced assembly-line configuration assigns the workers in the following way: • Worker 1: Tasks 1, 2, 3 • Worker 2: Tasks 4, 5, 6 • Worker 3: Tasks 7, 8, 9 • Worker 4: Tasks 10, 11, 12 What is the direct labor content (in seconds per unit)?
Currently a company that designs Web sites has six customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. Job Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) A 6 18 48 B 4 22 52 C 1 30 70 D 10 14 28 E 7 12 56 F 5 20 62 Develop a schedule by using the first-come, first-served (FCFS) rule and calculate the average flow time and average days past due for the schedule. Develop a schedule by using the earliest due date (EDD) rule and calculate the average flow time and average days past due for the schedule. Comment on the performance of the FCFS and EDD rules relative to average flow time and average days past due.
Joe's Twenty-four Seven Laundromat has the following jobs waiting to be processed. The first step of the process includes washing and drying the clothes; the second step is pressing the clothing. Joe wants to minimize the amount of time it takes to do all the jobs. The five jobs waiting to be processed are shown here. Job Wash andDry (hours) Press(hours) A 5 4 B 3 4 C 2 3 D 7 5 E 4 2 Wash and Dry Using FCFS, assume the jobs arrive in the order shown (A, then B, then C, etc.). Show the beginning time for each job and ending time for the whole process adding hours throughout the process. A -0 number of hours B-5 number of hours C-8 number of hours D-10 number of hours E-17 number of hours A B C D E 0 enter a number of hours enter a number of hours enter a number of hours enter a number of hours enter a number of hours enter a number of hours Press
1/ Katie Posh runs an upscale nail salon. The service process includes five activities that are conducted in the sequence described below. (The time required for each activity is shown in parentheses):Activity 1: Welcome a guest. (1 minute)Activity 2: Clip and file nails. (3 minutes)Activity 3: Paint. (5 minutes)Activity 4: Dry. (10 minutes)Activity 5: Check out the customer. (4 minutes)Three servers (S1, S2, and S3) offer the services in a worker-paced line. The assignment of tasks to servers is the following: S1 does Activity 1. S2 does Activities 2 and 3. S3 does Activities 4 and 5. The drying process does not require server 3’s constant attention; she/he needs to only escort the customer to the salon’s drying chair (equipped with fans for drying). The time to do this is negligible. There exists only one drying chair in the salon.a. What is the utilization of server 2 (in decimal form)? Assume that there is unlimited demand and that the process only admits customers at the rate of…
AssumMe a customer orders a product online. SupPpose that the product is delivered later in the weEek. The time between the order placement and order delivery is known as: a. waitT time b. queue time c. cycle time d. process time
20 ______ are high-volume product processes that typically produce standardized products and require identical or similar operations. a Line processes b Intermittent processes c Machine processes d Outlier processes 21 ______ is concerned with regulating inputs to a work center in relation to output and available capacity so that the queues and waiting times of jobs can be managed and kept under control. a Input control b Input-output control c Process control d Capacity control 22 ______ is a method applied to situations in which various resources must be allocated to activities on a one-to-one basis. a Time-series method b Assignment method c Integer programming d Linear analysis
When grouping by time, a user can only select one time unit. True O False
In a manufacturing system, the technique of determining how to assign tasks (jobs) to specific work stations (machines) in an production line is referred to as O a. work allocation O b. station allocation O c. process balancing O d. task allocation O e. line balancing
Wally's Widget Warehouse takes orders from 7 A.M. to 7 P.M. The manager wants to analyze the process and has provided the following process flow diagram. There are three steps required to ship a customer order. The first step is to take the order from a customer. The second step is to pick the order for the customer, and then they have to pack the order to ready it for shipping. The order-taking step works at a maximum rate of 100 customer orders per hour. Order picking works at a maximum of 75 per hour, and packing works at 60 per hour. Customers Order Taker 100 Customers/ hour Current maximum output Pick orders Pack orders Customer Orders Pick Orders 75 Customers/ hour hours hours Picked Orders Wally wants to figure out the following. a. What is the current maximum daily output of the process assuming that no one works overtime? (i.e., meaning all three operations work a 12-hour shift) units per day Pack Orders 60 Customers/ hour Wait for Shipper b. How long (in hours) will the…

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