Bob Dresser Operates a Major Appliance Warranty Service Centre A What Is the Optimal Sequence of Jobs for the Operation

question 116

Essay

Bob Dresser operates a major appliance warranty service centre. His operation has two check stations that are required at the end of every repair task performed by his appliance repair staff. These are the Functionality Review (FR) and the Overall Scan (OS). The FR must be performed successfully before the OS is begun. On Friday morning, six repair jobs are completed, awaiting these two inspection activities. Processing times are given in minutes.
$$\begin{array} { | c | c | c | } \hline \text { Job } & \text { FR } & \text { OS } \\\hline \text { A } & 50 & 30 \\\hline \text { B } & 35 & 55 \\\hline \text { C } & 25 & 20 \\\hline \text { D } & 20 & 35 \\\hline \text { E } & 15 & 10 \\\hline \text { F } & 10 & 25 \\\hline\end{array}$$ a. What is the optimal sequence of jobs for the objective of minimizing the total flow time?
b. Show your work, and document the sequence.
c. Chart the solution to this problem.
d. What jobs are being processed at time period 90?
e. What is the total flow time of this problem?
$$\begin{array} { | l | l | l | l | l | l | l | l | l | l | l | } \hline \mathrm { FR } & & & & & & & & & & \\\hline \mathrm { OS } & & & & & & & & & & \\\hline & 20 & 40 & 60 & 80 & 100 & 120 & 140 & 160 & 180 & 200 \\\hline\end{array}$$

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Definitions:

Spinal Cord

The cylindrical bundle of nerve fibers that runs from the brainstem down the spine and mediates nerve signals between the brain and the body.

Reflexes

Reflexes are involuntary and nearly instantaneous movements in response to a stimulus, serving as basic building blocks of behavior and survival mechanisms.

Peripheral Nervous System

A part of the nervous system that lies outside the brain and spinal cord, responsible for transmitting information to and from the central nervous system and the rest of the body.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for processing and sending out information to and from the body.