Operations Management
17th Edition
ISBN: 9781259142208
Author: CACHON, Gérard, Terwiesch, Christian
Publisher: Mcgraw-hill Education,
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Chapter 18, Problem 2CQ
Summary Introduction
To determine: Whether shortest processing time always sequences jobs in a different order than first-come-first-served is true or false?
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Suppose there is a set of jobs to be processed at a resource. Shortest processing timealways sequences the jobs in a different order than first-come-first-served. True or false?a. Trueb. False
Line processes generally have lower volumes as compared to job processes.
True
False
Which of the following is a benefit of overbooking a resource?a. It helps to reduce the average number of jobs waiting to be processed on the resource.b. It helps to reduce the average flow time of jobs through a resource.c. It helps to increase the utilization of the resource.d. It helps to reduce the processing times of jobs at a resource.
Chapter 18 Solutions
Operations Management
Ch. 18 - Prob. 1CQCh. 18 - Prob. 2CQCh. 18 - Prob. 3CQCh. 18 - Prob. 4CQCh. 18 - Prob. 5CQCh. 18 - Prob. 6CQCh. 18 - With weighted shortest processing time, jobs are...Ch. 18 - Prob. 8CQCh. 18 - Prob. 9CQCh. 18 - Prob. 10CQ
Ch. 18 - Prob. 11CQCh. 18 - Prob. 12CQCh. 18 - Prob. 13CQCh. 18 - Prob. 14CQCh. 18 - Prob. 15CQCh. 18 - Prob. 16CQCh. 18 - Prob. 1PACh. 18 - Prob. 2PACh. 18 - Prob. 3PACh. 18 - Prob. 4PACh. 18 - Prob. 5PACh. 18 - Prob. 6PACh. 18 - Prob. 7PACh. 18 - Prob. 8PACh. 18 - Prob. 9PACh. 18 - Prob. 10PACh. 18 - Prob. 11PACh. 18 - Prob. 12PACh. 18 - Prob. 13PACh. 18 - Prob. 14PACh. 18 - Prob. 15PACh. 18 - Prob. 1CCh. 18 - Prob. 2CCh. 18 - Prob. 3CCh. 18 - Prob. 4C
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- The earliest-due-date rule always minimizes the maximum tardiness across jobs. True orfalse?a. Trueb. Falsearrow_forwardA work system has five stages with processing times of 58, 247, 91, 262, and 175 mins/unit. A product must go through these stages in a sequential order. What is the bottleneck processing time in mins/unit? (Only enter a number, do not enter any unitsarrow_forwardBackground Info A "Visit" is an instance of a person coming to a website A "visitor" is a person who conducts a visit on a website An "Order" is an instance of someone making a purchase "Conversion rate" is defined as the number or orders per visit The home page of a web site can be "split" into two versions ("A" and "B") that have different characteristics (e.g. layout, products, etc.) These different versions can then be shown to different visitors on a random basis For example, 75% of visitors would see version A and 25% of visitors would see version B Scenario You are determining which home page version is the best choice for the site to maximize the number of orders. A two week split test was set up where visitors were randomly (but not necessarily equally) assigned to one home page or another, and the number of visitors to each homepage and the related orders were accurately recorded by day. The additional traffic on the 7th and 14th is due to some banner ads running on MSN on…arrow_forward
- Clinical supervision is a management practice that benefits from parallel processing. This helps students learn and succeed. If two tasks cannot be completed simultaneously, then the time spent waiting for the delayed task to begin might be used toward finishing the first task. The individual's productivity is increased and time is better controlled thanks to parallel processing.arrow_forwardJob rotation and job enlargement are the same thing.. True Falsearrow_forwardWhat information can you get from an average number of jobs (ANJ) in sequencing? a.Higher ANJ means higher work in process. b.Higher ANJ means lower tardiness. c.Higher ANJ means a higher make-span. d.Higher ANJ means longer actual processing time. Higher ANJ means lower flow time.arrow_forward
- Raquel is concerned with effi ciency. She believes it isprobably more effi cient to use SPT (shortest processing time) asher priority rule.(a) Develop a sequence using SPT based on processing timefor preparing the area.(b) Calculate the makespan, the mean job fl ow time, and theaverage number of jobs in the system.arrow_forwardConsider a business process in which each order that arrives is split into two jobs that are performed in parallel and are then rejoined before leaving the system. Assume no variance in inter-arrival times nor in process times for each task. Each station (depicted by a rectangle) contains one or more identical parallel servers (depicted by circles). Each server is independent of all others and can work on one job at at a time. Process times for individual servers at station A are 5 minutes. Servers at stations B and C have process times of 3 and 6 minutes respectively. Consider the system with one server per station. What is this system's capacity? What is the cycle time for each order through the entire process flow?arrow_forwardConsider a business process in which each order that arrives is split into two jobs that are performed in parallel and are then rejoined before leaving the system. Assume no variance in inter-arrival times nor in process times for each task. Each station (depicted by a rectangle) contains one or more identical parallel servers (depicted by circles). Each server is independent of all others and can work on one job at at a time. Process times for individual servers at station A are 5 minutes. Servers at stations B and C have process times of 3 and 6 minutes respectively. Consider the system with one server at each of the stations A and B as before, and two identical parallel servers (each with a 6 minute process time) at station C. What is the system's capacity? What is the cycle time for each order through the entire process flow?arrow_forward
- Compared to high school, college students: a. have more free time between classes b. are expected to consult the course syllabus for assignments and deadlines c. should spend 2 to 3 hours on course work outside of class for each hour in class d. all of the abovearrow_forwardThe bottleneck resource in a process has the least idle time. True or false?a. Trueb. Falsearrow_forwardLee is the manager of the ABC construction project. Lee is informed by the foreman that the concrete will need to cure for one more day before the framing can start. Lee should add which time to the framing activity to accommodate the requirement? Group of answer choices Lag Delay Slack Leadarrow_forward
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