18.6. Questions and Tasks
411
time_to_abandon_bad = 1800 00 /1 9 6 0
time_to_abandon_go od = 500
effect_of_coastal_eff_on_aqua =
GRAPH(coastal_effluents /INIT(coastal_effluents»
(1.00 ,1.00),
(8 .60,2. 89),
(16.2, 5 .95),
(2.9 0,1. 27),
(10.5 , 3 .61),
(1 8.1, 7 .0 3 ) ,
( 6 . 7 0,
( 1 4 . 3,
( 4 . 8 0 , 1. 7 6) ,
(12.4,4 . 20) ,
(2 0 . 0 , 10 .0 )
2. 3 1 ),
4 . 9 6 ) ,
effect_of_coastal eff_on_wild =
GRAPH(coasta1_effluents /INIT(coastal_effluents»
(1.00 ,1.00) , (2 .90, 1.00), (4 .80 ,1.00), (6.70,1.00),
(14.3 , 1.00),
(8.60, 1.00),
(16.2 , 1.00),
(l0 .5, 1.00), (12 .4, 1.00),
(1 8 .1 , 1.00), (20.0, 1.00)
eff luents_discharged \pond = GRAPH(percent_ good)
(0.1,100), (0 .19,91.5), (0.28,82 .0), (0.37,71 .0) ,
(0 . 4 6 , 62 . 0 ) , (0 .55 ,51.0), (0.6 4,40 .0), ( 0.73,32 .0),
(0 .82 ,25.5), (0 .91,17.5), (1 ,10.0 )
Financial Sector
As se ts_Aquaculture(t) = Assets_Aquaculture(t-dt) +
(revenues_aquaculture -investing_aquacu1ture -
expenses_aquaculture) * dt
IN IT Assets_Aquaculture = 20000000
IN FLOWS:
revenues_aquaculture = Actual_Price*consuming *( l -
fisheries_market_share )
OUTFLOWS :
i nvesting_aquaculture =
Hectares_Developing *cost_to_develop-pond/6
expenses_aquaculture =
Hectares_of_Ponds*cost_t o_operate-pond
Assets_Fisheries(t) = Assets_Fisheries (t-dt) +
(revenues_fisheries-investing_f isheries -
expenses_f isheries) * dt
IN I T Assets_Fisher ies = 80000000
IN FLOWS :
revenues fisheries =
Actual_Price*consuming *fisheries_market_share
OUTFLOWS:
investing_fisheries =
(cost-per_new_vessel *receiving_vessels)
expenses_fisheries = Vessels*cost_to_operate_vessel