Table 2. Illustration of a Linear Programming Matrix Used to Determine the Optimal Number, Location and Size of Center Pγvot Irrigation Systems
|
Item" |
Decision variables |
Constraint | ||||||||||
|
Pivot 1 |
Pivot 2 |
Pivot 3 |
...W2,5 ...W3,3 W3,4 |
W3,5 |
W3,6 W3,7 ...W4,3 W4,4 W4,5 |
W4,6 W4,7. Selll |
Sel 12 |
Sel 13 |
Rent |
Dry | ||
|
Objective ..... |
~. ^A |
-B |
-C |
Pl |
P2 |
P3 |
R |
-K | ||||
|
Pivot 5,5 ...... |
1 |
1 |
1 |
≤1 | ||||||||
|
G2,5 ............ |
1 |
-1 |
≤1 | |||||||||
|
G3,3 ............ |
1 |
-1 |
≤1 | |||||||||
|
G3,4 ............ |
1 |
-1 |
≤1 | |||||||||
|
G3,5 ............ |
1 |
1 |
-1 |
≤1 | ||||||||
|
G3,6 ............ |
1 |
-1 |
≤1 | |||||||||
|
G3,7 ............ |
1 |
≤1 | ||||||||||
|
G5,2 ............ |
1 |
≤1 | ||||||||||
|
G5,3 ............ |
1 |
1 |
≤1 | |||||||||
|
G5,4 ............ |
1 |
I |
1 |
≤1 | ||||||||
|
G5,5 ............ |
1 |
1 |
1 |
≤1 | ||||||||
|
G5,6 ............ |
1 |
1 |
1 |
≤1 | ||||||||
|
G5,7 ............ |
1 |
1 |
≤1 | |||||||||
|
G5,8 ............ |
1 |
≤1 | ||||||||||
|
G8,5 ............ |
1 |
≤1 | ||||||||||
|
Yield ............ |
D |
E |
F |
-H -H -H |
-H |
-H -H -H -H -H |
-H -H -1 |
-1 |
-1 |
V |
=0 | |
|
Land ............. |
X |
Y |
Z |
1 |
1 |
≤L | ||||||
|
Quota........... |
1 |
≤Q1 | ||||||||||
|
Contract ....... |
1 |
_≤Qz | ||||||||||
• Alphabetic characters in the matrix represent specific coefficients used in the analysis: A, B, and C are the annual costs of each size of center pivot system (including
peanut production costs); D, E, and F are the total yields of peanuts that would be expected from the land covered by each pivot; H is the irrigated yield increase for
each grid area; K is the cost∕acre of поп-irrigated peanuts; L is the total land available; Pl, P2, and P3 are the quota, contract, and world prices for peanuts, respectively;
Q∣ is the quota available for the field being considered; Q2 is the total that can be sold at contract price; R is the rent per acre; V is the yield per acre for non-irrigated
peanuts; and X, Y, and Z are the acres covered by each pivot irrigation system.
991
More intriguing information
1. The name is absent2. The name is absent
3. The name is absent
4. The name is absent
5. The name is absent
6. Konjunkturprognostiker unter Panik: Kommentar
7. Synthesis and biological activity of α-galactosyl ceramide KRN7000 and galactosyl (α1→2) galactosyl ceramide
8. IMPACTS OF EPA DAIRY WASTE REGULATIONS ON FARM PROFITABILITY
9. What Drives the Productive Efficiency of a Firm?: The Importance of Industry, Location, R&D, and Size
10. The name is absent