CCR/vensim/bes.mdl

{UTF-8}
Noise=
	RANDOM UNIFORM(0, 5, 1234)
	~	
	~		|

Demand=
	Base Demand+Noise
	~	loaves/Day
	~		|

Amplitude of Seasonal Variations=
	30
	~	loaves
	~		|

phi=
	0
	~	radians
	~		|

Base Demand=
	200
	~	loaves/Day
	~		|

Sigma=
	5
	~	loaves/Day
	~		|

Period=
	7
	~	days
	~		|

Available Workers=
	2
	~	workers
	~		|

Base Rate=
	200
	~	loaves/Day
	~		|

Lead Time Sugar=
	1
	~	days
	~		|

Bread Production=
	MIN(Base Rate,MinResource )*Labour Efficiency
	~	loaves/Day
	~		|

Water Safety=
	300
	~	litres
	~		|

Sugar Purchase=
	MAX(0,( Bread Production*Suger per Loaf+Sugar Safety-Sugar)/Lead Time Sugar)
	~	kg
	~		|

Flour per Loaf=
	0.3
	~	kg/loaf
	~		|

Suger per Loaf=
	0.02
	~	kg/loaf
	~		|

MinSugarWater=
	MIN(Sugar/Suger per Loaf, Water/Water per Loaf )
	~	
	~		|

Yeast Purchase=
	MAX(0,( Bread Production*Yeast per Loaf+Yeast Safety-Yeast)/Lead Time Yeast)
	~	kg
	~		|

Labour Efficiency=
	MIN(1, Available Workers/Workers Required )
	~	Dmnl
	~		|

Water= INTEG (
	Water Purchase-(Bread Production*Water per Loaf),
		2000)
	~	litres
	~		|

Water Cost=
	0.001
	~	$/litre
	~		|

Lead Time Water=
	1
	~	days
	~		|

Lead Time Yeast=
	1
	~	days
	~		|

Water Purchase=
	MAX(0,( Bread Production*Water per Loaf+Water Safety-Water)/Lead Time Water)
	~	litres
	~		|

Workers Required=
	2
	~	workers
	~		|

MinFlourYeast=
	MIN(Flour/Flour per Loaf, Yeast/Yeast per Loaf )
	~	
	~		|

MinResource=
	MIN(MinFlourYeast, MinSugarWater )
	~	
	~		|

Water per Loaf=
	0.2
	~	litres/loaf
	~		|

Waste Bread=
	2
	~	loaves/Day
	~		|

Raw Material Cost=
	(Flour Cost*Flour Purchase)+(Sugar Cost*Sugar Purchase)+(Yeast Cost*Yeast Purchase)+\
		(Water Cost*Water Purchase)
	~	$
	~		|

Yeast Safety=
	10
	~	kg
	~		|

Sugar Safety=
	20
	~	kg
	~		|

Bread= INTEG (
	Bread Production-Waste Bread-Sales,
		0)
	~	loaves
	~		|

Flour= INTEG (
	Flour Purchase-(Flour per Loaf*Bread Production),
		1000)
	~	kg
	~		|

Flour Cost=
	0.5
	~	$/kg
	~		|

Flour Purchase=
	MAX(0,( Bread Production*Flour per Loaf+Flour Safety-Flour)/Lead Time Flour )
	~	kg
	~		|

Flour Safety=
	200
	~	kg
	~		|

Labour Cost=
	Wage Rate*Total Labour Hours
	~	$
	~		|

Lead Time Flour=
	1
	~	days
	~		|

Maintainance Cost=
	Maintainance Rate*Money
	~	$
	~		|

Maintainance Rate=
	0.002
	~	fraction/Day
	~		|

Money= INTEG (
	Revenue-Labour Cost-Maintainance Cost-Raw Material Cost,
		100000)
	~	$
	~		|

Revenue=
	Sales Price*Sales
	~	$
	~		|

Sales=
	MIN( Bread , Demand )
	~	loaves/Day
	~		|

Sales Price=
	4
	~	$/loaf
	~		|

Sugar= INTEG (
	Sugar Purchase-(Bread Production*Suger per Loaf),
		100)
	~	kg
	~		|

Sugar Cost=
	0.8
	~	$/kg
	~		|

Total Labour Hours=
	16
	~	hours/Day
	~		|

Wage Rate=
	12
	~	$/Hour
	~		|

Yeast= INTEG (
	Yeast Purchase-(Bread Production*Yeast per Loaf),
		50)
	~	kg
	~		|

Yeast Cost=
	10
	~	$/kg
	~		|

Yeast per Loaf=
	0.01
	~	kg/loaf
	~		|

********************************************************
	.Control
********************************************************~
		Simulation Control Parameters
	|

FINAL TIME  = 120
	~	Month
	~	The final time for the simulation.
	|

INITIAL TIME  = 0
	~	Month
	~	The initial time for the simulation.
	|

SAVEPER  = 
        TIME STEP 
	~	Month [0,?]
	~	The frequency with which output is stored.
	|

TIME STEP  = 1
	~	Month [0,?]
	~	The time step for the simulation.
	|

\\\---/// Sketch information - do not modify anything except names
V300  Do not put anything below this section - it will be ignored
*View 1
$-1--1--1,0,|12||-1--1--1|-1--1--1|-1--1--1|-1--1--1|-1--1--1|96,96,99,0
10,1,Money,921,89,42,22,3,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,2,48,624,82,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,3,5,2,100,0,0,22,0,192,0,-1--1--1,,1|(688,82)|
1,4,5,1,4,0,0,22,0,192,0,-1--1--1,,1|(817,82)|
11,5,0,749,82,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,6,Revenue,749,112,42,22,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,7,48,1474,84,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,8,10,1,100,0,0,22,0,192,0,-1--1--1,,1|(1216,85)|
1,9,10,7,4,0,0,22,0,192,0,-1--1--1,,1|(1474,85)|
11,10,0,1475,85,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,11,Raw Material Cost,1475,122,61,29,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,12,48,1265,88,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,13,15,1,100,0,0,22,0,192,0,-1--1--1,,1|(1111,90)|
1,14,15,12,4,0,0,22,0,192,0,-1--1--1,,1|(1265,90)|
11,15,0,1266,90,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,16,Labour Cost,1266,120,56,22,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,17,48,1086,89,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,18,20,1,100,0,0,22,0,192,0,-1--1--1,,1|(1022,90)|
1,19,20,17,4,0,0,22,0,192,0,-1--1--1,,1|(1086,90)|
11,20,0,1087,90,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,21,Maintainance Cost,1087,127,63,29,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,22,Wage Rate,1185,225,50,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,23,Total Labour Hours,1342,227,58,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,24,22,16,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,25,23,16,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,26,Sales Price,669,189,49,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,27,Sales,818,191,42,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,28,26,6,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,29,27,6,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,30,Flour,1792,-265,42,22,3,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,31,48,1615,-212,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,32,34,31,100,0,0,22,0,192,0,-1--1--1,,1|(1654,-212)|
1,33,34,30,4,0,0,22,0,192,0,-1--1--1,,1|(1689,-265)|
11,34,0,1689,-212,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,35,Flour Purchase,1689,-175,43,29,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,36,Flour per Loaf,1942,-267,43,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,37,36,30,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,38,Bread,915,-40,42,22,3,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,39,48,719,-50,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,40,42,39,100,0,0,22,0,192,0,-1--1--1,,1|(719,-38)|
1,41,42,38,4,0,0,22,0,192,0,-1--1--1,,1|(799,-26)|
11,42,0,719,-26,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,43,Bread Production,719,11,51,29,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,44,27,38,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
12,45,48,1054,-61,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,46,48,38,100,0,0,22,0,192,0,-1--1--1,,1|(1055,-40)|
1,47,48,45,4,0,0,22,0,192,0,-1--1--1,,1|(1054,-65)|
11,48,0,1055,-65,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,49,Waste Bread,1055,-35,59,22,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,50,43,30,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
12,51,48,1444,236,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,52,54,51,100,0,0,22,0,192,0,-1--1--1,,1|(1444,175)|
1,53,54,11,4,0,0,22,0,192,0,-1--1--1,,1|(1352,122)|
11,54,0,1352,175,8,6,33,3,0,0,4,0,0,0,0,0,0,0,0,0
10,55,Flour Cost,1407,175,47,22,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,56,48,1643,221,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,57,59,56,100,0,0,22,0,192,0,-1--1--1,,1|(1643,161)|
1,58,59,11,4,0,0,22,0,192,0,-1--1--1,,1|(1475,161)|
11,59,0,1710,161,8,6,33,3,0,0,1,0,0,0,0,0,0,0,0,0
10,60,Yeast Cost,1710,189,48,22,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,61,48,1675,97,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,62,64,61,100,0,0,22,0,192,0,-1--1--1,,1|(1648,97)|
1,63,64,11,4,0,0,22,0,192,0,-1--1--1,,1|(1577,97)|
11,64,0,1625,97,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,65,Sugar Cost,1625,127,49,22,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,66,35,11,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,67,Yeast,1807,-82,42,22,3,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,68,48,1633,-80,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,69,71,68,100,0,0,22,0,192,0,-1--1--1,,1|(1689,-80)|
1,70,71,67,4,0,0,22,0,192,0,-1--1--1,,1|(1730,-72)|
11,71,0,1689,-72,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,72,Yeast Purchase,1689,-35,43,29,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,73,Yeast per Loaf,1919,-87,44,29,8,3,0,0,-1,1,0,0,0,0,0,0,0,0
1,74,73,67,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,75,72,11,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,76,Sugar,1806,61,42,22,3,3,0,0,-1,0,0,0,0,0,0,0,0,0
12,77,48,1636,68,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,78,80,77,100,0,0,22,0,192,0,-1--1--1,,1|(1680,68)|
1,79,80,76,4,0,0,22,0,192,0,-1--1--1,,1|(1745,68)|
11,80,0,1721,68,6,8,34,3,0,0,1,0,0,0,0,0,0,0,0,0
10,81,Sugar Purchase,1721,105,43,29,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,82,Suger per Loaf,1934,60,45,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,83,82,76,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,84,81,11,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,85,Maintainance Rate,1076,212,63,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,86,85,21,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,87,Demand,816,255,42,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,88,87,27,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,89,30,150,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,90,67,150,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,91,76,152,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,92,36,150,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,93,73,150,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,94,82,152,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,95,30,35,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,96,Flour Safety,1661,-293,55,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,97,96,35,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,98,Lead Time Flour,1544,-217,48,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,99,98,35,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,100,1,21,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,101,43,35,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,102,36,35,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,103,Base Rate,563,-17,46,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,104,103,43,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,105,Labour Efficiency,647,-96,44,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,106,105,43,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,107,38,27,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,108,43,67,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,109,43,76,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,110,Yeast Safety,1686,-123,56,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,111,110,72,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,112,Lead Time Yeast,1543,-45,40,18,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,113,112,72,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,114,Lead Time Sugar,1562,44,40,18,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,115,114,81,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,116,73,72,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,117,82,81,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,118,67,72,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,119,76,81,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,120,43,72,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,121,43,81,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,122,Sugar Safety,1698,10,57,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,123,122,81,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,124,Available Workers,788,-102,42,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,125,124,105,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,126,Workers Required,500,-97,43,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,127,126,105,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,128,Water,1815,182,42,22,3,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,129,Water per Loaf,1952,181,47,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,130,129,128,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
12,131,48,1789,248,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,132,134,131,100,0,0,22,0,192,0,-1--1--1,,1|(1789,234)|
1,133,134,128,4,0,0,22,0,192,0,-1--1--1,,1|(1789,210)|
11,134,0,1789,222,8,6,33,3,0,0,4,0,0,0,0,0,0,0,0,0
10,135,Water Purchase,1840,222,43,29,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,136,128,135,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,137,Water Safety,1844,287,59,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,138,137,135,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,139,Lead Time Water,1985,259,48,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,140,139,135,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
12,141,48,1528,264,10,8,0,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,142,144,141,100,0,0,22,0,192,0,-1--1--1,,1|(1528,283)|
1,143,144,11,4,0,0,22,0,192,0,-1--1--1,,1|(1550,122)|
11,144,0,1550,283,8,6,33,3,0,0,4,0,0,0,0,0,0,0,0,0
10,145,Water Cost,1609,283,51,22,40,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,146,135,11,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,147,43,128,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,148,43,135,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,149,129,135,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,150,MinFlourYeast,892,-122,58,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,151,150,156,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,152,MinSugarWater,729,-155,59,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,153,152,156,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,154,128,152,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
1,155,129,152,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,156,MinResource,575,-150,60,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,157,156,43,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,158,Base Demand,682,251,42,29,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,159,158,87,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
10,160,Amplitude of Seasonal Variations,829,347,60,42,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,161,Period,940,250,42,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,162,phi,699,332,42,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,163,Sigma,929,325,42,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
10,164,Noise,596,301,42,22,8,3,0,0,-1,0,0,0,0,0,0,0,0,0
1,165,164,87,0,0,0,0,0,192,0,-1--1--1,,1|(0,0)|
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