fixed machine cycle time of 1.5 minutes. Two heuristic rules will be tried: (1) greatest positional weight, and (2) greatest number of Following tasks. n each case, the tiebreaker will be shortest task time. Task 10 DUT 46.0 KH b C d e f h i j k 1 Length (minutes) 0.1 0.2 0.9 0.6 0.1 0.2 0.4 0.1 0.2 0.7 0.3 0.2 Work Station I II III Immediate Predecessor 110 DUI Work Station I a b с d, e 46.0 f h o. Assign tasks to stations under each of the two rules. 1) greatest positional weight (shortest task time as tiebreaker) i j Tasks (Click to select) (Click to select) ▼ (Click to select) ▼ 2) greatest number of following tasks (shortest task time as tiebreaker) Tasks (Click to select)

fixed machine cycle time of 1.5 minutes. Two heuristic rules will be tried: (1) greatest positional weight, and (2) greatest number of Following tasks. n each case, the tiebreaker will be shortest task time. Task 10 DUT 46.0 KH b C d e f h i j k 1 Length (minutes) 0.1 0.2 0.9 0.6 0.1 0.2 0.4 0.1 0.2 0.7 0.3 0.2 Work Station I II III Immediate Predecessor 110 DUI Work Station I a b с d, e 46.0 f h o. Assign tasks to stations under each of the two rules. 1) greatest positional weight (shortest task time as tiebreaker) i j Tasks (Click to select) (Click to select) ▼ (Click to select) ▼ 2) greatest number of following tasks (shortest task time as tiebreaker) Tasks (Click to select)

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Twelve tasks, with times and precedence requirements as shown in the following table, are tobe assigned to workstations using a cycle time of 1.5 minutes. Two heuristic rules will be tried:(1) greatest positional weight, and (2) most following tasks.In each case, the tiebreaker will be shortest processing time. TaskLength(minutes)ImmediatePredecessora 0.1 —b 0.2 ac 0.9 bd 0.6 ce 0.1 —f 0.2 d, eg 0.4 fh 0.1 gi 0.2 hj 0.7 ik 0.3 jl 0.2 k a. Draw the precedence diagram for this line.b. Assign tasks to stations under each of the two rules.c. Compute the percentage of idle time for each rule
The Sun River beverage company is a regional producer of teas, exotic juices, and energy drinks. With an interest in healthier lifestyles, there has been an increase in demand for its sugar-free formulation.The final packing operation requires 13 tasks. Sun River bottles its sugar-free product 5 hours a day, 5 days a week. Each week, there is a demand for 2,140 bottles of this product. TASK PERFORMANCE TIME (MINUTES) TASK MUST FOLLOW 1 0.1 — 2 0.3 1 3 0.3 2 4 0.3 2 5 0.1 2 6 0.2 3, 4, 5 7 0.3 1 8 0.1 7 9 0.2 8 10 0.3 9 11 0.2 6 12 0.3 10, 11 13 0.1 12 Using the above data, solve the assembly-line balancing problem and calculate the efficiency of your solution. Use the longest task time for your decision criteria. (Round your answer to the nearest whole percent.) Balance the assembly line and show the workstation, tasks, total task time, and total idle time using the longest task time as the decision making heuristic.
As part of a major plant renovation project, the industrial engineering department has been asked to balance a revised assembly operation to achieve an output of 230 units per 8-hour day. Task times and precedence relationships are as follows: Duration Immediate Task (minutes) Predecessor a 0.2 b 0.6 a 0.4 b d 0.7 e 1.6 f 1.8 e f Do each of the following: a. Determine the number of followers for each task. Number of tasks following task a Number of tasks following task b Number of tasks following task c Number of tasks following task d Number of tasks foll task e Number of tasks following task f Number of tasks following task g
If the cycle time is 65.4 seconds and A is assigned as the first task in Workstation #1, what is the idle time after assigning task A? Task Task Time (seconds) Tasks That Must Precede Other Tasks Number of Following Tasks A 28 - 7 B 13 - 8 C 35 B 7 D 11 A 6 E 20 C 6 F 6 D, E 5 G 23 F 3 H 25 F 2 I 37 G 1 J 11 G, H 1 K 27 I, J 0 Total 236 a. 26.9 minutes b. 37.4 seconds c. 28.5 seconds d. 31.6 seconds e. 57.6 seconds
As part of a major plant renovation project, the industrial engineering department has been asked to balance a revised assembly operation to achieve an output of 240 units per eight-hour day. Task times and precedence relationships are as follows: Task Duration(minutes) ImmediatePredecessor a 0.2 - b 0.4 a c 0.2 b d 0.4 - e 1.2 d f 1.2 c g 1.0 e, f Click here for the Excel Data File Do each of the following: a. Determine the minimum cycle time, the maximum cycle time, and the calculated cycle time. (Round your answers to 1 decimal place.) b. Determine the minimum number of stations needed. (Round your answer to the next whole number.) c. Assign tasks to workstations on the basis of greatest number of following tasks. Use longest processing time as a tiebreaker. If ties still exist, assume indifference in choice. d. Compute the percentage of idle time for the assignment in part d. Use the actual bottleneck cycle time in your calculation.…
A manager wants to assign tasks to workstations as efficiently as possible and achieve an hourly output of 30 units. Assume the shop works a 60-minute hour. Assign the tasks shown in the accompanying precedence diagram (times are in minutes) to workstations using the following rules: 0.5 0.8 1.7 0.8 0.7 0.5 h 0.9 0.8
A manager wants to assign tasks to workstations as efficiently as possible and achieve an hourly output of 30 units. Assume the shop works a 60-minute hour. Assign the tasks shown in the accompanying precedence diagram (times are in minutes) to workstations using the following rules: 0.5 0.8 1.7 0.8 0.7 0.5 a 0.9 0.8 a. What is Cycle time? (Round your answer to 1 decimal place.) Cycle time minutes
The Sun River beverage company is a regional producer of teas, exotic juices, and energy drinks. With an interest in healthier lifestyles, there has been an increase in demand for its sugar-free formulation. The final packing operation requires 13 tasks. Sun River bottles its sugar-free product 5 hours a day, 5 days a week. Each week, there is a demand for 3,000 bottles of this product. TASK TIME (MINUTES) PRECEDING TASK 1 0.1 — 2 0.1 1 3 0.1 2 4 0.2 2 5 0.1 2 6 0.2 3, 4, 5 7 0.1 1 8 0.1 7 9 0.2 8 10 0.1 9 11 0.2 6 12 0.2 10, 11 13 0.1 12 Using the following data, solve the assembly-line balancing problem and calculate the efficiency of your solution. Use the longest task time for your decision criteria. Note: Round your answer to the nearest whole percent.
A producer of inkjet printers is planning to add a new line of printers, and you have been asked to balance the process, given the following task times and precedence relationships. Assume that cycle time is to be the minimum possible. Task Length(minutes) Immediate(Predecessor) a 0.2 - b 0.4 a c 0.3 - d 1.3 b, c e 0.1 - f 0.8 e g 0.3 d, f h 1.2 g Click here for the Excel Data File a. Do each of the following: (3) Determine the percentage of idle time. (Round your answer to 2 decimal places.) (4) Compute the rate of output in printers per day that could be expected for this line, assuming a 420-minute working day. (Round your answer 2 decimal places.) b. Answer these questions: (1) What is the shortest cycle time that will permit use of only two workstations? (Round your answer to 1 decimal place.) (2) Determine the percentage of idle time that would result if two stations were used and each station was loaded with the worktime shown in Part b(1).…
A producer of inkjet printers is planning to add a new line of printers, and you have been asked to balance the process, given the following task times and precedence relationships. Assume that cycle time is to be the minimum possible. Task Length(minutes) Immediate(Predecessor) a 0.2 - b 0.4 a c 0.3 - d 1.3 b, c e 0.1 - f 0.8 e g 0.3 d, f h 1.2 g Click here for the Excel Data File a. Do each of the following: (1) Enter the number of following tasks for each of the tasks shown in the table below. (2) Assign tasks to stations in order of greatest number of following tasks. Use greatest positional weight as a tiebreaker rule. (3) Determine the percentage of idle time. (Round your answer to 2 decimal places.)    (4) Compute the rate of output in printers per day that could be expected for this line, assuming a 420-minute working day. (Round your answer 2 decimal places.)    b. Answer these questions: (1) What is the…
Glaudious is 45 years old university internship coordinator. He is handling 80 interns and he would like to perform the following tasks in an easy and fast way. He also encountered an accident a year ago which caused his right leg to have a bone minor fracture which caused him to limit the place he can go. He would like that he can perform the tasks anytime and anywhere. Below are the tasks of Prof Glaudios. 1)     He registers the students undergoing internship, this includes the term in a schoolyear, the company name where the student is undergoing internship, directsupervisor of the intern, start of duty, Number of Hours of duty per day, andthe Job of the student-intern in the company. 2)     He will also view the following: a)     Individual internship record in a term-sem-school year b)     Interns details in a company Based on the scenario above, model the tasks of Prof Glaudious by creating a Task Analysis.
Glaudious is 45 years old university internship coordinator. He is handling 80 interns and he would like to perform the following tasks in an easy and fast way. He also encountered an accident a year ago which caused his right leg to have a bone minor fracture which caused him to limit the place he can go. He would like that he can perform the tasks anytime and anywhere. Below are the tasks of Prof Glaudios. 1)     He registers the students undergoing internship, this includes the term in a schoolyear, the company name where the student is undergoing internship, directsupervisor of the intern, start of duty, Number of Hours of duty per day, andthe Job of the student-intern in the company. 2)     He will also view the following: a)     Individual internship record in a term-sem-school year b)     Interns details in a company using the Professor Glaudious Scenario, provide the requirements specification: a. Functional b. Data c. Environmental d. User e. Usability