Advantages of Exponential smoothing

 

 

Question 1:

Workers should be given more control over the inspection for their own work. Discuss the pros and cons of this situation? (Marks 02)

Question 2:

What are the advantages of Exponential smoothing over the Moving average and the Weighted moving average? (Marks 02)
Explain the aggregate planning strategy? (Marks 02)
Question 3:

Sequence the jobs shown below by using a Gantt chart. Sequence the jobs in priority order 1, 2, 3, 4.

Job Work Center/Machine Hours

Due Date (days)

1

A/3, B/2, C/2

3

2

C/2, A/4

2

3

B/6, A/1, C/3

4

4

C/4, A/1, B/2

3

Using finite capacity scheduling, draw a Gantt chart for the schedule (Marks 01)
What is the makespan? (Marks 0.5)
How much machine idle time is there? (Marks 0.5)
How much idle time (waiting time) is there for each job? (Marks 0.5)
When is each job delivered? (Marks 0.5)
Which department is the bottleneck? (Marks 0.5)
Calculate the machine utilization? (Marks 0.5)

Sample Solution

Advantages of Exponential smoothing

Exponential smoothing is a rule of thumb technique for smoothing time series data using the exponential window function. Whereas in the simple moving average the past observations are weighed equally, exponential functions are used to assign exponentially decreasing weights over time. Exponential smoothing takes into account the more recent values and therefore is regarded as more accurate than average smoothing. Aggregate planning is to determine the planned production quantity by period to meet forecast demand over a medium-range planning horizon. The overall objective is to allocate all the resources in an efficient manner while satisfying the forecast demands over the planning horizon.

While a set of frameworks complement and build on each other, the delineation of the concept focuses heavily on vertical versus horizontal dimensions in a time-sliced fashion. That is, time dimension in accountability has not been of primary importance. However, it is worth noting that the time dimension is closely interrelated with a series of conceptual distinctions made in previous literature, and it may cover complementary aspects of the question concerning two sequential lines represented by administrative responsibility versus political accountability. First, the positioning of accountability actors depends on the time dimension. Civil servants usually have longer terms to serve the public interest over the long term. At the same time, they are responsible to the elected representatives of the public who tend to have “a limited time horizon” and “prefer policies that yield tangible benefits for constituents in the near term” (Posner, 2004: 137). For this reason, the priorities expressed by elected officials may be far more related to short-term issues and temporal problems instead of long-term solutions, whereas the long-lasting forms of civil service personnel would prioritize sustainable solutions to secure a long-term perspective of the citizens, both current and in the future. Second, the time frame is essential to distinguishing between two main streams of accountability. Accountability mechanisms focus predominantly on retroactive accountability for the past outcomes, while accountability as a virtue takes a proactive approach to ensuring ethical behaviors in the future. The timeline is also useful to distinguishing between ex ante accountability of the decision-making process leading up to the decision and ex post accountability where the results available from the decision already taken or where questions of compliance are identified and addressed. In other words, ex ante accountability refers to being accountable for the decision before an administrator act, while ex post accountability is suggestive of situations where administrators are accountable for the outcome of their decisions. For example, the focus of traditional bureaucratic administration is very much

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