Mixed Integer Linear Programming in Process Scheduling: Modeling ...
Mixed Integer Linear Programming in Process Scheduling: Modeling ...
Mixed Integer Linear Programming in Process Scheduling: Modeling ...
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158 FLOUDAS AND LIN<br />
yikk ′ b<strong>in</strong>ary variable, whether or not task (i) starts at time (k) and is active over slot (k′ )<br />
≥ (k)<br />
y(s, p) b<strong>in</strong>ary variable, whether or not state (s) isused at time po<strong>in</strong>t (p)<br />
yv( j, n) b<strong>in</strong>ary variable, whether or not unit ( j) starts be<strong>in</strong>g utilized at event po<strong>in</strong>t (n)<br />
V M<strong>in</strong><br />
ij , V Max<br />
ij parameters, m<strong>in</strong>imum and maximum capacity of unit ( j) for task (i), respectively<br />
Wijt b<strong>in</strong>ary variable, whether or not task (i) starts <strong>in</strong> unit ( j) atthe beg<strong>in</strong>n<strong>in</strong>g of time<br />
<strong>in</strong>terval (t)<br />
Wijk b<strong>in</strong>ary variable, whether or not task (i) starts at Tk <strong>in</strong> unit ( j)<br />
F , Wijk b<strong>in</strong>ary variables, whether or not task (i) starts and f<strong>in</strong>ishes <strong>in</strong> unit ( j)atevent<br />
(k), respectively<br />
wv(i, n) b<strong>in</strong>ary variable, whether or not task (i) starts at event po<strong>in</strong>t (n)<br />
W S<br />
ijk<br />
Acknowledgments<br />
The authors gratefully acknowledge support from the National Science Foundation, and<br />
Atof<strong>in</strong>a Chemicals, Inc.<br />
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