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代写运营管理作业 Operations Management代写

2022-05-27 10:53 星期五 所属: 作业代写 浏览:36

Operations Management

Final Review Session 1 

 代写运营管理作业 When a box has been filled with 10 bottles,a worker tending the packaging machine removes the filled box and replaces it with an empty box.

Question 1. Yoggo Soft Drink  代写运营管理作业

A small, privately owned Asian company is producing a private-label soft drink, Yoggo. A manufacturing line puts the soft drinks into plastic bottles and then packages the bottles into boxes holding 10 bottles each. The manufacturing line is comprised of the following four steps: (1) the bottling machine takes 1 second to fill a bottle, (2) the lid machine takes 3 seconds to cover the bottle with a lid, (3) a labeling machine takes 5 seconds to apply a label to a bottle, and (4) the packaging machine takes 4 seconds to place a bottle into a box.

When a box has been filled with 10 bottles,a worker tending the packaging machine removes the filled box and replaces it with an empty box. Assume that the time for the worker to remove a filled box and replaces it with an empty box is negligible and hence does not affect the capacity of the line. At step 3, there are two labeling machines that each process alternating bottles, that is, the first machine processes bottles 1,3,5,. . . and the second machine processes bottles 2,4,6,. . . Problem data are summarized in the table below.

Process Step Number of Machines Seconds per Bottle
Bottling 1 1
Applying a lid 1 3
Labeling 2 5
Packaging 1 4
  1. What is the process capacity (bottles/hour) for the manufacturingline?  代写运营管理作业

2.What is the bottleneck in theprocess?

  1. Ifone more identical labeling machine is added to the process, how much is the increase in the process capacity going to be (in terms of bottles/hour)?
  2. What is the utilization of the packaging machine if the demand rate is 60 boxes/hour? Recall that a box consists of 10 bottles.

Question 2. Fuel Economy 

In response to a recent fuel economy bill passed by the U.S. Senate raising the average fleet-wide gas mileage to 35 miles per gallon by the year 2020, Victor Puente, the chief operating officer of an up-and-coming auto-maker was put in charge to evaluate the quality output of a flexible engine assembly line. The production process was subject to several modifications after a number of changes were made to existing engine designs in order to increase fuel efficiency. Victor currently has a team of 6-s specialists (called black belts) in the organization to help him carry out this task. You are the master black belt reporting directly to Victor. After carefully designing the rational sub-groups in a test, you have received the gas mileage ratings of 15 engine groups, each of size 5, for analysis. The numbers are summarized in the table below:  代写运营管理作业

Group X1 X2 X3 X4 X5 X S
1 34.8 35.268 35.305 34.569 35.418 35.072 0.367
2 34.502 35.204 35.283 35.186 35.035 35.042 0.315
3 34.91 35.067 35.318 35.062 35.026 35.0766 0.149
4 35.068 35.089 34.849 35.102 35.055 35.0326 0.104
5 34.709 34.648 34.596 34.856 34.668 34.6954 0.099
6
34.651 34.563 35.011 35.204 35.058 34.8974 0.276
7 34.86 35.244 34.948 34.783 35.214 35.0098 0.209
8 34.825 35.458 34.982 34.956 35.079 35.06 0.24
9 34.961 34.809 35.143 34.558 34.573 34.8088 0.252
10 34.647 35.167 35.007 34.847 34.878 34.9092 0.193
11 35.289 34.602 34.583 34.972 34.671 34.8234 0.304
12 34.797 34.917 35.145 35.202 34.848 34.9818 0.181
13 35.312 35.155 35.035 34.879 35.077 35.0916 0.159
14 35.363 35.333 34.791 35.256 35.488 35.2462 0.268
15 35.072 34.53 35.382 34.953 34.77 34.9414 0.32
Average 34.979 0.229

1.Construct an X-chart to deduce whether the process is in control.

2.Theengineering team has issued the specification limits of the high efficiency engines to be between 34.5 mpg and 35.5 mpg. Using the already obtained sample from the assembly line, can you report to Victor whether the process is capable? What is its capability index Cp?

代写运营管理作业
代写运营管理作业

Question 3. Valley Forge Income Tax Advice  代写运营管理作业

VF is a small accounting firm supporting wealthy individuals in their preparation of annual income tax statements. Every December, VF sends out a short survey to their customers, asking for the information required for preparing the tax statements. Based on 24 years of experience, VF categorize their cases into the following groups:

  • Group 1(New customers, easy): 15 percent ofcases
  • Group2(New customers, complex): 5 percent of cases
  • Group 3(Repeat customers, easy): 50 percent ofcases
  • Group 4(Repeat customers, complex): 30 percent ofcases

Here, easy versus complex refers to the complexity of the customer’s earning situation.  代写运营管理作业

In order to prepare the income tax statement, VF needs to complete the following set of activities. Activity times ( and even which activities need to be carried out) depend on which group a tax statement falls into. All of the following activity times are expressed in minutes per income tax statement.

Group Filing Initial Meeting Preparation Review by Senior Accountant Writing
1 20 30 120 20 50
2 40 90 300 60 80
3 20 No Meeting 80 5 30
4 40 No Meeting 200 30 60

The activities are carried out by the following three persons:

  • Administrative support person: filing andwriting
  • Senior accountant(who is also the owner): initial meeting, review by the senioraccountant
  • Junior accountant:

Assume that all three persons work eight hours per day and 20 days a month. For the following questions, assume the product mix as described above. Assume that there are 50 income tax statements arriving each month.

Activity Formula Average Processing Time
Filing 20×0.15+40×0.05+20×0.5+40×0.3 27
Initial Meeting 30×0.15+90×0.05+0×0.5+0×0.3 9  代写运营管理作业
Preparation 120×0.15+300×0.05+80×0.5+200×0.3 133
Review 20×0.15+60×0.05+5×0.5+30×0.3 17.5
Writing 50×0.15+80×0.05+30×0.5+60×0.3 44.5

Now, we calculate the average processing time for each employee by  adding up the average time they spend  on each activity. Using the average processing times, we calculate the processing capacity of each employee.  代写运营管理作业

Worker Avg. Proc. Time

(min)

Capacity

(min/month)

Proc.  Cap.

(jobs/month)

Admin Staff 27+44.5=71.5 8 × 20 × 60 = 9600 9600/71.5=134.3
Junior Accountant 133 8 × 20 × 60 = 9600 9600/133=72.2
Senior Accountant 9+17.5=26.5 8 × 20 × 60 = 9600 9600/26.5=362.3

Next, we calculate the utilization of each employee.

Since the capacity of each employee is represented as the total time they have available each month, we express demand as the monthly average time demanded from each employee.

Worker Proc. Time

(min/job)

Capacity

(min/month)

Demand

(min/month)

Utilization

代写运营管理作业

Admin Staff 71.5 9600 71.5×50=3575 3575/9600=0.372
Junior Accountant 133 9600 133×50=6650 6650/9600=0.693
Senior Accountant 26.5 9600 26.5×50=1325 1325/9600=0.138

Now we are ready to answer the sub-questions.

1.Which of the three persons is thebottleneck?  代写运营管理作业

  1. What is the utilization of the senior accountant? The junior account? The administrative support person?
  1. Youhave been asked to analyze which of the four product groups is the most  Which factors would influence the answer to this?
  2. Howwould the process capacity of VF change if a new word processing system would reduce the time to write the income tax statements by 50 percent?
代写运营管理作业
代写运营管理作业

 

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